Patent Publication Number: US-2020282372-A1

Title: Food processor

Description:
CROSS-REFERENCES TO RELATED APPLICATIONS 
     The present disclosure is a 371 National Phase Application of PCT Application No. PCT/CN2018/099073, filed on Aug. 7, 2018, which claims the priority of Chinese Patent Application Nos. 201711133496.X, 201711133499.3, 201711128043.8, 201711133641.4, 201711133498.9, 201711133497.4, 201711133340.1, 201711141527.6, 201721521043.X, 201721526830.3, 201721526826.7, 201721521045.9, 201721527104.3, 201721536331.2, 201721527003.6, 201721527130.6, 201711133500.2, 201721526648.8, 201721526104.1 and 201711128044.2, filed on Nov. 14, 2017, which are hereby incorporated by reference in their entirety. 
    
    
     FIELD 
     The present disclosure relates to the field of household appliances, in particular to a food processor. 
     BACKGROUND 
     During the process of stirring the ingredients in the food processor, after the ingredients in the cup body are crushed, it is easy to contact with the oxygen in the air to cause the ingredients to be oxidized, causing the nutrition of the ingredients to be lost or reducing the taste of the ingredients. 
     A vacuum pumping structure is provided in the food processor to prevent the ingredients from being oxidized during the stirring process. However, in the existing food processor, the vacuum pumping device is generally mounted on the base, and extends to the cup cover by providing an air path in the guide post fixedly connected to the base or an air path in the cup body. The design of the air path of the pumping structure makes the pumping air path too long, the overall structure is more complicated, and the reliability during the pumping process is poor. 
     SUMMARY 
     Embodiments of the present disclosure are to provide a food processor, which aims to simplify the pumping structure of the food processor, and improve the use convenience of the food processor. 
     Embodiments of the present disclosure provides a food processor, including: 
     a cup body; 
     a cup cover detachably connected to an upper end of the cup body, the cup cover including a pumping opening communicating with an inner cavity of the cup body, and being provided with a cover handle; and 
     a vacuum pumping device detachably connected to the cup cover, the vacuum pumping device including a pumping hole and an exhaust hole, the pumping hole being configured to communicate with the pumping opening after the vacuum pumping device is mounted on the cup cover. 
     In some embodiments, the cup cover is concavely formed with a slot, the pumping opening is defined on a bottom wall of the slot, the vacuum pumping device includes a housing, the housing is formed with an insertion portion, the pumping hole is provided in the insertion portion, the insertion portion is embedded in the slot; and/or 
     the pumping opening is lower than an upper edge of the cup body; and/or 
     the pumping opening is located in a middle of the cup cover. 
     In some embodiments, a shape of a vertical section of the slot is trapezoidal or square, and an external contour shape of the insertion portion is adapted to the shape of the vertical section of the slot. 
     In some embodiments, a depth of the slot is a dimension of the slot extending in an axial direction of the cup body, and the depth of the slot is 5 mm to 50 mm. 
     In some embodiments, the vacuum pumping device further includes a first power supply structure and a pumping power element provided in the housing, the pumping power element is electrically connected to the first power supply structure, the food processor further includes a base, the cup body is mounted on the base, the base is provided with a second power supply structure, and the first power supply structure and the second power supply structure are independent of each other. 
     In some embodiments, a clamping slot is formed on an outer wall of the housing, the clamping slot is configured to surround the insertion portion, a first sealing ring is mounted in the clamping slot, and the first sealing ring is clamped by the vacuum pumping device and the cup cover after the vacuum pumping device is mounted on the cup cover. 
     In some embodiments, the cup cover is connected with a connecting portion at a periphery of the pumping opening, the connecting portion is configured to extend towards the inner cavity of the cup body, the vacuum pumping device protrudes from a sealing ring mounting portion at an outer wall of the insertion portion, the pumping hole is located inside the sealing ring mounting portion, the sealing ring mounting portion is configured to partially extend into the connecting portion and is connected to the connecting portion, a first sealing ring is sleeved outside the sealing ring mounting portion, and the first sealing ring is clamped by the vacuum pumping device and the cup cover after the vacuum pumping device is mounted on the cup cover. 
     In some embodiments, the first sealing ring is clamped between the outer wall of the insertion portion and the bottom wall of the slot. 
     In some embodiments, both the sealing ring mounting portion and the connecting portion are cylindrical; 
     the first sealing ring is clamped between the sealing ring mounting portion and the connecting portion; or 
     the first sealing ring includes a first sealing portion and a second sealing portion connected to the first sealing portion, the first sealing portion is clamped between the insertion portion and the bottom wall of the slot, and the second sealing portion is clamped between the sealing ring mounting portion and the connecting portion. 
     In some embodiments, the cup cover is further provided with a connecting ring, the connecting ring is configured to surround the slot and extend towards the inner cavity of the cup body, an annular groove is formed on an outer wall of the connecting ring, a second sealing ring is embedded in the annular groove, and the second sealing ring is configured to abut on the inner wall of the cup body. 
     In some embodiments, the cup cover is further provided with a pressure relief hole communicating with the inner cavity of the cup body, and the cup cover is also provided with a pressure relief valve configured to open or close the pressure relief hole at the pressure relief hole. 
     In some embodiments, the pressure relief valve includes a pressure relief valve mounting portion, a valve wing connected to one end of the pressure relief valve mounting portion, and a pressure relief valve fixing portion connected to the other end of the pressure relief valve mounting portion, the cup cover further includes a mounting hole adjacent to the pressure relief hole, the pressure relief valve mounting portion is configured to slide through the mounting hole, the valve wing is located outside the cup cover, the pressure relief valve fixing portion is located inside the cup cover, the pressure relief valve is configured to slide relative to the mounting hole to allow the valve wing to open or close the pressure relief hole, and the pressure relief valve fixing portion is stopped by an inner wall of the cup cover after the valve wing is away from the pressure relief hole and configured to open the pressure relief hole. 
     In some embodiments, the pressure relief valve includes a pressure relief valve mounting portion, a pressing portion connected to one end of the pressure relief valve mounting portion, and a valve wing connected to the other end of the pressure relief valve mounting portion, the pressure relief valve mounting portion is configured to slide through the mounting hole, the pressing portion is located outside the cup cover, the valve wing is located inside the cup cover; and 
     the pressure relief valve mounting portion is further sleeved with an elastic member, one end of the elastic member is configured to abut on the pressing portion, and the other end of the elastic member is configured to abut on the cup cover, the elastic member provides an elastic force to drive the valve wing to abut on the inner surface of the cup cover and cover the pressure relief hole, and under an external force, the valve wing is away from the pressure relief hole and configured to open the pressure relief hole. 
     In some embodiments, the vacuum pumping device includes a housing and a pumping power element, a closed receiving cavity is formed on the housing, the pumping power element is received in the receiving cavity, the housing is provided with a pumping hole, a pressure relief hole, and an exhaust hole, the pumping hole and the pressure relief hole both are configured to communicate with the receiving cavity, an air inlet of the pumping power element is configured to communicate with the receiving cavity, the exhaust hole is configured to communicate with an air outlet of the pumping power element through a pipeline, and the pumping hole is configured to communicate with the pumping opening after the vacuum pumping device is mounted on the cup cover; and 
     the pumping hole, the receiving cavity, and the pressure relief hole are configured to communicate with each other to form a pressure relief air path, and the pumping hole, the receiving cavity, the pumping power element, and the exhaust hole are configured to communicate with each other to form a pumping air path. 
     In some embodiments, the vacuum pumping device is detachably connected to the cup cover through a clamping structure, a screw structure or a magnetic suction structure. 
     In some embodiments, a mounting detection structure for detecting whether the vacuum pumping device is mounted on the cup cover is provided between the cup cover and the vacuum pumping device. 
     In some embodiments, the food processor further includes a waterproof and breathable structure, the waterproof and breathable structure is mounted on the cup cover and configured to cover the pumping opening, or the waterproof and breathable structure is mounted on the vacuum pumping device and configured to cover the pumping hole. 
     In some embodiments, the vacuum pumping device includes a housing and a pumping power element, a receiving cavity is formed on the housing, the pumping power element is received in the receiving cavity; and 
     the vacuum pumping device further includes a control circuit board and a start switch mounted on the housing, and the control circuit board is configured to receive start signal of the start switch and control the pumping power element to start. 
     In some embodiments, the food processor further includes a detection module, the detection module is received in the receiving cavity and connected to the control circuit board and/or the pumping power element, and the detection module is configured to detect a current, a suction pressure, or a running time of the pumping power element. 
     In some embodiments, the food processor includes a wall-breaking machine, a blender, and a juicer. 
     Embodiments of the present disclosure disclose the vacuum pumping device is detachably connected to the cup cover. The vacuum pumping device is not fixed to the base of the food processor. As such, the vacuum pumping device can form a pumping air path in itself. When the food processor needs to evacuate, the vacuum pumping device is mounted on the cup cover. The pumping hole of the vacuum pumping device communicates with the pumping opening of the cup cover, so that the pumping gas path in the vacuum pumping device can directly lead to the cup body. The vacuuming function of the food processor is realized through a simple gas path structure. It prevents the ingredients from being oxidized during the process of stirring the ingredients in the food processor, which improves the use effect of the food processor. Meanwhile, the vacuum pumping device is detachably connected to the cup cover, and the food processor does not need to be provided with a mounting structure of the vacuum pumping device on the cup body or the base, so that the overall structure of the food processor is simplified, and the volume of the food processor is also reduced. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       In order to more clearly illustrate the embodiments of the present disclosure, the drawings will be briefly described below. The drawings in the following description are only some embodiments of the present disclosure. 
         FIG. 1  is a structural diagram of a vacuum pumping device according to a first embodiment of the present disclosure; 
         FIG. 2  is a schematic cross-sectional structural diagram of the vacuum pumping device according to a second embodiment of the present disclosure; 
         FIG. 3  is a schematic cross-sectional structural diagram of the vacuum pumping device according to a third embodiment of the present disclosure; 
         FIG. 4  is a schematic cross-sectional structural diagram of the vacuum pumping device according to a fourth embodiment of the present disclosure; 
         FIG. 5  is a schematic cross-sectional structural diagram of a food processor according to a first embodiment of the present disclosure; 
         FIG. 6  is a schematic cross-sectional structural diagram of the food processor according to a second embodiment of the present disclosure; 
         FIG. 7  is an enlarged schematic view at portion A in  FIG. 6 ; 
         FIG. 8  is a schematic cross-sectional structural diagram of the food processor according to a third embodiment of the present disclosure; 
         FIG. 9  is a schematic cross-sectional structural diagram of the food processor according to a fourth embodiment of the present disclosure; 
         FIG. 10  is an enlarged schematic view at portion B in  FIG. 9 ; 
         FIG. 11  is a schematic cross-sectional structural diagram of the food processor according to a fifth embodiment of the present disclosure; 
         FIG. 12  is an enlarged schematic view at portion C in  FIG. 11 ; 
         FIG. 13  is a schematic cross-sectional structural diagram of the food processor according to a sixth embodiment of the present disclosure; 
         FIG. 14  is an enlarged schematic view at portion D in  FIG. 13 ; 
         FIG. 15  is a schematic cross-sectional structural diagram of the food processor according to a seventh embodiment of the present disclosure; 
         FIG. 16  is an enlarged schematic view at portion F in  FIG. 15 ; 
         FIG. 17  is a schematic cross-sectional structural diagram of the food processor according to an eighth embodiment of the present disclosure; 
         FIG. 18  is an enlarged schematic view at portion G in  FIG. 17 ; 
         FIG. 19  is an enlarged schematic view at portion H in  FIG. 17 ; 
         FIG. 20  is a schematic cross-sectional structural diagram of the food processor according to a ninth embodiment of the present disclosure; 
         FIG. 21  is an enlarged schematic view at portion J in  FIG. 20 ; 
         FIG. 22  is a schematic cross-sectional structural diagram of the food processor according to a tenth embodiment of the present disclosure; and 
         FIG. 23  is a schematic cross-sectional structural diagram of the vacuum pumping device of the food processor according to an eleventh embodiment of the present disclosure; 
     
    
    
     Description of reference numerals: 
     
       
         
           
               
               
               
               
             
               
                 TABLE 1 
               
               
                   
               
               
                 Label 
                 Name 
                 Label 
                 Name 
               
               
                   
               
             
            
               
                   
               
            
           
           
               
               
               
               
            
               
                 100 
                 vacuum pumping device 
                 301 
                 pumping opening 
               
               
                 101 
                 pumping hole 
                 310 
                 connecting portion 
               
               
                 102 
                 exhaust hole 
                 3101 
                 second protrusion 
               
               
                  102a 
                 gap 
                 3103 
                 internal thread 
               
               
                 103, 302 
                 pressure relief hole 
                 3105 
                 magnetic member 
               
               
                 104, 303 
                 mounting hole 
                 320 
                 connecting ring 
               
               
                 110 
                 housing 
                 3201 
                 annular groove 
               
               
                 111 
                 upper housing 
                 3011 
                 slot 
               
               
                 1111, 3013 
                 limiting groove 
                 330 
                 cover handle 
               
               
                 1113, 3015 
                 limiting cylinder 
                 400 
                 mounting detection structure 
               
               
                 1115  
                 switch fixing member 
                 410 
                 trigger switch 
               
               
                 1116  
                 switch limiting member 
                 420 
                 trigger member 
               
               
                 1117  
                 mounting space 
                 500 
                 cup body 
               
               
                 1118  
                 limiting portion 
                 600 
                 pressure relief valve 
               
               
                 113 
                 lower housing 
                 610 
                 pressure relief valve mounting portion 
               
               
                 1131  
                 insertion portion 
                 620 
                 valve wing 
               
               
                 1133  
                 clamping slot 
                 630 
                 pressure relief valve fixing portion 
               
               
                 115 
                 sealing ring mounting portion 
                 640 
                 pressing portion 
               
               
                 1151  
                 first protrusion 
                 650 
                 sealing gasket 
               
               
                 1153  
                 external thread 
                 660 
                 elastic member 
               
               
                 1155  
                 first magnetic member 
                 700 
                 base 
               
               
                 120 
                 pumping power element 
                 810 
                 mounting cylinder 
               
               
                 121 
                 air inlet 
                 820 
                 waterproof and breathable membrane 
               
               
                 122 
                 air outlet 
                 900 
                 food processor 
               
               
                 123 
                 check valve 
                 901 
                 first sealing ring 
               
               
                 130 
                 control circuit board 
                 9011 
                 first sealing portion 
               
               
                 140 
                 first power supply structure 
                 9013 
                 second sealing portion 
               
               
                 150 
                 start switch 
                 902 
                 second sealing ring 
               
               
                 300 
                 cup cover 
               
               
                   
               
            
           
         
       
     
     DETAILED DESCRIPTION OF THE DISCLOSURE 
     Embodiments of the present disclosure will be clearly and completely described in the following with reference to the accompanying drawings. 
     It is to be understood that, all of the directional instructions in the embodiments of the present disclosure (such as up, down, left, right, front, rear . . . ) can only be used for explaining relative position relations, moving condition of the elements under a predetermined form (referring to figures), and so on, if the predetermined form changes, the directional instructions changes accordingly. 
     In the present disclosure, unless specified or limited otherwise, the terms “connected”, “fixed” and the like are used broadly. For example, “fixed” can be fixed connections, detachable connections, or integral connections; may also be mechanical or electrical connections; may also be direct connections or indirect connections via intervening structures, may also be inner connecting of two elements, or interaction relationship between two elements. 
     The present disclosure provides a vacuum pumping device  100 . The vacuum pumping device  100  can be used for vacuum processing before the ingredients of the food processor  900  are stirred, so that the ingredients in the food processor  900  can be stirred under a vacuum environment, to prevent the ingredients from interacting with the air during the stirring process and from being oxidized to cause the loss of nutrients, or affect the appearance and taste of the ingredients. The vacuum pumping device  100  can be transported and stored as an independent object. That is, the vacuum pumping device  100  of the present disclosure is not fixedly connected to the food processor  900 , and the vacuum pumping device  100  is combined with the food processor  900  only when the food processor  900  needs to be evacuated, to evacuate the inner cavity of the cup body  500  of the stirring cup of the food processor  900 . When the vacuum pumping device  100  of the present disclosure is used, it is assembled with the cup cover  300  of the food processor  900  to evacuate the inner cavity of the cup body  500 . 
     Referring to  FIG. 1  to  FIG. 4 , the specific structure of the vacuum pumping device  100  of the present disclosure is as follows. The vacuum pumping device  100  includes a housing  110 , a pumping power element  120 , a control circuit board  130 , and a first power supply structure  140 . A receiving cavity (not shown) is formed in the housing  110 . The housing  110  includes a pumping hole  101  and an exhaust hole  102 . The pumping power element  120 , the control circuit board  130 , and the first power supply structure  140  are received in the receiving cavity. The control circuit board  130  is electrically connected to the pumping power element  120  and the first power supply structure  140  respectively. 
     The pumping power element  120  may be a vacuum pump including an air inlet  121  and an air outlet  122 . The air inlet  121  communicates with the pumping hole  101  on the housing  110 . The air outlet  122  communicates with the exhaust hole  102  on the housing  110 . The air extracted by the food processor  900  enters the air inlet  121  of the pumping power element  120  through the pumping hole  101 . Driven by the pumping power element  120 , air flows through the air outlet  122  and finally exits the housing  110  through the exhaust hole  102 . During this process, the control circuit board  130  controls the operation of the pumping power element  120 , and the first power supply structure  140  provides energy for the operation of the entire vacuum pumping device  100 . 
     Embodiments of the present disclosure disclose the vacuum pumping device  100  includes a housing  110 , a pumping power element  120  provided in the housing  110 , and a control circuit board  130 . The vacuum pumping device  100  can be set independently and can perform vacuuming operation on the food processor  900 , so that it is convenient to use and also has the effect of convenient storage. Meanwhile, by designing a vacuum pumping device  100  that is independent of the base  700  of the food processor  900 , the vacuum pumping device  100  and the food processor  900  can be placed separately when the vacuuming operation is not performed. Compared with the solution in which the existing vacuum pumping device  100  and the food processor  900  are integrated, the embodiments of the present disclosure can also reduce the volume of the food processor  900 . 
     The housing  110  of the present disclosure includes an upper housing  111  and a lower housing  113 . The upper housing  111  and the lower housing  113  are interlocked with each other and form the receiving cavity. The receiving cavity is formed in the housing  110 . The upper housing  111  and the lower housing  113  may be made of plastic. The upper housing  111  and the lower housing  113  may be provided with snap structures matching with each other at their peripheral edges to achieve a snap connection between the two, or one of the upper housing  111  and the lower housing  113  may be provided with a groove structure at the peripheral edge, the other of the upper housing  111  and the lower housing  113  snaps into the groove, and the two are connected by screws or glue. The pumping power element  120  and the control circuit board  130  are both provided in the receiving cavity. The upper housing  111  and the housing  110  may extend a mounting plate in the receiving cavity. The pumping power element  120  and the control circuit board  130  can be clamped or screwed to the mounting plate, to be relatively fixed to the housing  110 . 
     Since the vacuum pumping device  100  performs vacuuming operation on the food processor  900 , the air tightness of the vacuum pumping device  100  and the convenience of the cleaning operation need to be considered. In the present disclosure, the upper housing  111  may be snap-fitted to the lower housing  113  to achieve the detachable connection of the housing  110 , and a sealing ring is provided between the upper housing  111  and the lower housing  113 . In this way, it is convenient to disassemble and assemble the pumping power element  120  and the control circuit board  130  and other components in the housing  110  to ensure convenient cleaning operation. In order to ensure the airtightness during the pumping process, in the present disclosure, the following design is performed on the air path of the vacuum pumping device  100 . 
     Referring to  FIG. 1 , in the first pumping air path structure, the receiving cavity formed by the upper housing  111  and the lower housing  113  is a closed cavity, and the pumping hole  101  communicates with the receiving cavity. The air inlet  121  of the pumping power element  120  communicates with the receiving cavity, and the air outlet  122  of the pumping power element  120  communicates with the exhaust hole  102  through a pipeline. In the first air path structure, the receiving cavity is a part of the pumping air path channel. As such, during the operation of the vacuum pumping device  100 , the heat generated by the control circuit board  130  and the pumping power element  120  can be discharged together with the airflow, which can make the heat dissipation performance of the vacuum pumping device  100  better. 
     Referring to  FIG. 2 , in the second pumping air path structure, the receiving cavity formed by the upper housing  111  and the lower housing  113  is a closed cavity. The air inlet  121  of the pumping power element  120  communicates with the pumping hole  101  through a pipeline, and the air outlet  122  of the pumping power element  120  communicates with the exhaust hole  102  through a pipeline. The pumping air path of the second pumping air path structure is relatively sealed, and is relatively stable during the pumping process. 
     Referring to  FIG. 3 , in the third pumping air path structure, the housing  110  is provided with a gap  102   a  communicating with the receiving cavity and the outside. The air inlet  121  of the pumping power element  120  communicates with the pumping hole  101  through a pipeline, the air outlet  122  of the pumping power element  120  communicates with the receiving cavity, and the exhaust hole  102  is formed in the gap  102   a . In the third pumping air path structure, after the upper housing  111  and the lower housing  113  are engaged, a closed cavity is not formed, and the gap  102   a  between the upper housing  111  and the lower housing  113  is configured to form the exhaust hole  102  of the pumping device. The air outlet  122  of the pumping power element  120  communicates with the receiving cavity so that the receiving cavity also forms part of the pumping air path. During the pumping process, air is discharged from the gap  102   a . The effect achieved by the third air path is similar to that of the first air path, and will not be described again. 
     Referring to  FIG. 4 , in the fourth pumping air path structure, after the upper housing  111  and the lower housing  113  are engaged, a closed cavity is not formed but a gap  102   a  is formed. The housing  110  further defines an exhaust hole  102  outside the gap  102   a,  and the air outlet  122  of the pumping power element  120  communicates with the exhaust hole  102  through a pipeline. In the fourth air path structure, the pumping power element  120  and the control circuit board  130  in the receiving cavity can exchange heat with the outside air through the gap to naturally dissipate heat, and the pumping air path is relatively closed, which is more stable during the pumping process. 
     Further, in the above air path structures of the pumping device of the present disclosure, a check valve  123  may be provided at the air outlet  122  of the pumping power element, to ensure that the outside air will not return during vacuuming, thus improving the air extraction effect. 
     Further, the pumping hole  101  is defined in the lower housing  113 , and the exhaust hole  102  may be defined in the upper housing  111  or the lower housing  113 . When the exhaust hole  102  is defined in the upper housing  111 , the air is exhausted upward during vacuuming, and the structure is relatively simple. When the exhaust hole  102  is defined in the lower housing  113 , the air is exhausted downward during vacuuming, so that the airflow is not easy to rush to the user during the exhaust process, and it is safer during use. 
     The present disclosure further provides a food processor  900  applying the above vacuum pumping device  100 . The food processor  900  may include small household appliances such as a soymilk machine, a wall-breaking machine, a juicer, and a blender. The vacuum pumping device  100  performs vacuuming treatment before the ingredients of the food processor  900  are stirred, to avoid the oxidation of the ingredients in the food processor  900  and oxygen in the air during the stirring process to cause the loss of nutrients and the deterioration of the taste and quality of the ingredients. 
     Referring to  FIG. 5  to  FIG. 8 , the food processor  900  includes a cup body  500 , a cup cover  300 , and a vacuum pumping device  100  as described above. When the vacuum pumping device  100  is applied to the food processor  900 , the structural improvement and adjustment can also be carried out on the basis of the above structure according to the actual application. The cup cover  300  is detachably connected to an upper end of the cup body  500 , the cup cover  300  includes a pumping opening  301  communicating with an inner cavity of the cup body  500 . The vacuum pumping device  100  is detachably connected to the cup cover  300 . The pumping hole  101  is configured to communicate with the pumping opening  301  after the vacuum pumping device  100  is mounted on the cup cover  300 . The side wall of the cup body  500  is provided with a handle (not shown), and the cup cover  300  is further provided with a cover handle  330  which extends outwards for a length range. By providing the cover handle  330 , it is convenient for the user to push or open the cover through the cover handle  330 . When closing the cup cover in place, the cover handle  330  corresponds to the handle. When you want to open the cup cover, push the cover handle  330  axially or radially to open and close the cup cover effortlessly, which is convenient for the user to operate. 
     In the present disclosure, the cross-sectional area of the upper opening of the cup body  500  of the food processor  900  is larger than the cross-sectional area of the lower opening. A handle is provided on the cup wall of the cup body  500  to facilitate the handling of the food processor  900  during use. The detachable connection of the vacuum pumping device  100  and the cup cover  300  can be achieved by providing a structure in which the cup cover  300  and the vacuum pumping device  100  are connected to each other, or by other components. The present disclosure will introduce the embodiments of detachable connection in detail in the following content. In the present disclosure, after the vacuum pumping device  100  is connected to the cup cover  300 , the vacuum pumping device  100  is located above the food processor  900 , which facilitates the disassembly and assembly of the entire structure. When the food processor  900  is used, after the ingredients are put into the cup body  500 , the cup cover  300  covers the cup body  500 , and then the vacuum pumping device  100  is mounted on the cup cover  300  to evacuate the cup body  500 . 
     Embodiments of the present disclosure, the vacuum pumping device  100  is detachably connected to the cup cover  300 . As such, the vacuum pumping device  100  and the cup cover  300  of the food processor  900  are independent of each other. The vacuum pumping device  100  can realize the vacuum treatment of the cup body  500 , and is also convenient to be stored separately after use, which is more convenient to use. The pumping opening  301  is provided on the cup cover  300  to cooperate with the vacuum pumping device  100  during vacuuming. As such, the vacuum pumping device  100  can extract the air in the inner cavity of the cup body  500  with a simple structure. The structure is simple and the cost is low. 
     Further, in order to realize that when the vacuum pumping device  100  is detachably connected to the cup cover  300 , the process is more convenient and the connection structure is stable, in the present disclosure, the cup cover  300  is concavely formed with a slot  3011 , the pumping opening  301  is provided on a bottom wall of the slot  3011 , the vacuum pumping device  100  includes a housing  110 , the housing  110  is formed with an insertion portion  1131 , and the insertion portion  1131  is embedded in the slot  3011  when the vacuum pumping device  100  is mounted on the cup cover  300 . As such, when the vacuum pumping device  100  is mounted on the cup cover  300 , the overall structure will not be too high, reducing the height of the whole machine, and it is more convenient for users to place and store the machine after using the machine. The pumping opening  301  may be lower than an upper edge of the cup body  500 ; and/or the pumping opening  301  is located in a middle of the cup cover  300 . When the pumping opening  301  is lower than the upper edge of the cup body  500 , the product design is more reasonable, reducing the height of the entire product. The pumping opening  301  is located in the middle of the cup cover  300 , and can be used as a blanking port, and when the vacuum pumping device  100  is removed, the material is added to the pumping opening  301  located in the middle, the material just falls on the stirring component (including the stirring knife) in the cup body  500  or is evenly distributed around the stirring component, and the processing of the material is more uniform. 
     A shape of a vertical section of the slot  3011  is trapezoidal or square, and an external contour shape of the insertion portion  1131  is adapted to the shape of the vertical section of the slot  3011 . The insertion portion  1131  of the present disclosure is convexly formed on the lower end of the vacuum pumping device  100 . The insertion portion  1131  is formed by the housing  110  of the vacuum pumping device  100 . The overall shape of the insertion portion  1131  may be tapered or cylindrical, or a cubic shape. Through the cooperation of the insertion portion  1131  and the clamping slot  1133  of the cup cover  300 , the alignment is more convenient when the vacuum pumping device  100  is mounted on the cup cover  300 . Meanwhile, the pumping opening  301  is provided on the bottom wall of the slot  3011 , and the pumping hole  101  is correspondingly provided on the insertion portion  1131 , and when the insertion portion  1131  is inserted into the slot  3011 , the pumping opening  301  and the pumping hole  101  can be communicated with each other. 
     A depth of the slot  3011  is a dimension of the slot  3011  extending in an axial direction of the cup body  500 , and the depth of the slot  3011  is 5 mm to 50 mm. The depth of the slot  3011  is set to the above numerical range, so that after the vacuum pumping device  100  is assembled to the cup cover  300 , the vacuum pumping device  100  is less likely to shake. 
     After the vacuum pumping device  100  is assembled to the cup cover  300 , in order to ensure the airtightness of the pumping process, the present disclosure further provides a sealing structure between the vacuum pumping device  100  and the cup cover  300 , and various scheme designs have also been performed on the sealing structure. 
     Referring to  FIG. 5 , in an embodiment, a clamping slot  1133  is formed on an outer wall of the housing  110 , the clamping slot  1133  is configured to surround the insertion portion  1131 , a first sealing ring  901  is mounted in the clamping slot  1133 , and the first sealing ring  901  is clamped by the vacuum pumping device  100  and the cup cover  300  after the vacuum pumping device  100  is mounted on the cup cover  300 . The first sealing ring  901  may be made of silica gel, which has a circular ring shape. When the vacuum pumping device  100  is mounted on the cup cover  300 , the first sealing ring  901  will elastically abut on the surface of the cup cover  300  to seal the two. With this sealing method, the sealing ring is clamped on the periphery of the slot  3011 , and the structure is relatively simple. 
     Referring to  FIG. 6  to  FIG. 8 , in an embodiment of the sealing structure, the cup cover  300  is connected with a connecting portion  310  at a periphery of the pumping opening  301 , the connecting portion  310  extends towards the inner cavity of the cup body  500 , the vacuum pumping device  100  protrudes from a sealing ring mounting portion  115  at an outer wall of the insertion portion  1131 , the pumping hole  101  is located inside the sealing ring mounting portion  115 , the sealing ring mounting portion  115  partially extends into the connecting portion  310  and is connected to the connecting portion  310 , a first sealing ring  901  is sleeved outside the sealing ring mounting portion  115 , and the first sealing ring  901  is clamped by the vacuum pumping device  100  and the cup cover  300  after the vacuum pumping device  100  is mounted on the cup cover  300 .  FIGS. 6 to 8  show two structural forms in which the vacuum pumping device  100  and the cup cover  300  are sealed in the slot  3011 , the sealing ring mounting portion  115  and the connecting portion  310  are both cylindrical. 
     As shown in  FIG. 8 , the first sealing ring  901  is clamped between the outer wall of the insertion portion  1131  and the bottom wall of the slot  3011 . The sealing structure is simple. 
     In a feasible sealing method (not shown), the first sealing ring  901  is clamped between the sealing ring mounting portion  115  and the connecting portion  310 . In such a sealing structure, the first sealing ring  901  is cylindrical, and is clamped between the sealing ring mounting portion  115  and the connecting portion  310  to achieve radial sealing. It should be understood that the first sealing ring  901  is clamped between the sealing ring mounting portion  115  and the connecting portion  310 , and the sealing ring mounting portion  115  and the connecting portion  310  are configured to match with the slot  3011  and the insertion portion  1131 , and the vacuum pumping device  100  is detachably connected to the cup cover  300 . 
     As shown in  FIG. 6  and  FIG. 7 , the first sealing ring  901  includes a first sealing portion  9011  and a second sealing portion  9013  connected to the first sealing portion  9011 , the first sealing portion  9011  is clamped between the insertion portion  1131  and the bottom wall of the slot  3011 , and the second sealing portion  9013  is clamped between the sealing ring mounting portion  115  and the connecting portion  310 . In such a sealing structure, the first sealing ring  901  has a T-shaped cross section, which not only realizes a radial seal between the sealing ring mounting portion  115  and the connecting portion  310 , but also realizes an axial seal between the outer wall of the insertion portion  1131  and the bottom wall of the mounting groove. While having such a good sealing effect, the connection and fixation of the vacuum pumping device  100  and the cup cover  300  can also be achieved, and the detachable connection of the vacuum pumping device  100  and the cup cover  300  can be realized. 
     Further, the cup cover  300  is further provided with a connecting ring  320 , the connecting ring  320  is configured to surround the slot  3011  and extend towards the inner cavity of the cup body  500 , an annular groove  3201  is formed on an outer wall of the connecting ring  320 , a second sealing ring  902  is embedded in the annular groove  3201 , and the second sealing ring  902  is configured to abut on the inner wall of the cup body  500 . 
     In the present disclosure, the vacuum pumping device  100  is detachably connected to the cup cover  300  through a clamping structure, a screw structure or a magnetic suction structure. 
     Referring to  FIG. 9  and  FIG. 10 , when the pumping opening  301  is provided on the bottom wall of the slot  3011 , the clamping structure includes a plurality of first protrusions  1151  protruding from the outer wall of the sealing ring mounting portion  115  of the cylindrical structure and a plurality of second protrusions  3101  protruding from the inner wall of the connecting portion  310  of the cylindrical structure. The sealing ring mounting portion  115  partially extends into the connecting portion  310 , and is clamped with the connecting portion  310  through the cooperation of the first protrusion  1151  and the second protrusion  3101 . The first protrusions  1151  are spaced apart from each other in the circumferential direction of the structure to which they are attached, and the second protrusions  3101  are spaced apart from each other in the circumferential direction of the structure to which they are attached. In the present disclosure, during the installation of the vacuum pumping device  100 , the second protrusion  3101  passes through two adjacent lower surfaces abutting on the first protrusion  1151  to achieve axial tension. As can be seen from the above, in the present disclosure, the sealing structure is provided between the vacuum pumping device  100  and the cup cover  300 , i.e., after the first protrusion  1151  and the second protrusion  3101  abut each other, under the action of the pre-tensioning force generated by the first sealing ring  901 , the connection structure of the vacuum pumping device  100  and the cup cover  300  is stronger. 
     Referring to  FIG. 11  and  FIG. 12 , in another embodiment of the detachable connection of the vacuum pumping device  100  and the cup cover  300 , when the pumping opening  301  is provided on the bottom wall of the slot  3011 , the screw structure includes an internal thread  3103  formed on the inner wall of the connection portion  310  of the cylindrical structure and an external thread  3103  formed on the outer wall of the sealing ring mounting portion  115  of the cylindrical structure. The sealing ring mounting portion  115  partially extends into the connecting portion  310  and is screwed to the connecting portion  310  through the cooperation of the internal thread  3103  and the external thread  1153 . In the present disclosure, when the screw connection scheme is applied, the sealing structure of the vacuum pumping device  100  and the cup cover  300  should adopt an axial sealing method in which a sealing ring is provided between the outer wall of the insertion portion  1131  and the bottom wall of the slot  3011 . The connection structure of the vacuum pumping device  100  and the cup cover  300  is a screw connection scheme, and the connection structure is relatively stable. 
     Referring to  FIG. 13  and  FIG. 14 , in another embodiment of the detachable connection of the vacuum pumping device  100  and the cup cover  300 , a magnetic connection structure can be provided between the vacuum pumping device  100  and the cup cover  300 . The magnetic structure includes a first magnetic member  1155  fixed to the housing  110 , and a second magnetic member  3105  fixed to the cup cover  300 . The vacuum pumping device  100  magnetically attracts the cup cover  300  through the cooperation of the first magnetic member  1155  and the second magnetic member  3105 . In order to achieve the firmness in the magnetic attraction process, the first magnetic member  1155  is fixed to the side wall of the housing  110  corresponding to the insertion portion  1131 , and the second magnetic member  3105  is fixed to the side wall of the cup cover  300  corresponding to the slot  3011 . Both the first magnetic member  1155  and the second magnetic member  3105  may be plate-shaped permanent magnets, or may be a combination of permanent magnets and metal plates that can be magnetized. The magnetic member can be embedded in the side wall during the manufacturing process of the cup cover  300  or the vacuum pumping device  100 . By providing magnetic members at the insertion portion  1131  and the slot  3011 , during the installation of the vacuum pumping device  100 , the vacuum pumping device  100  can be snapped into the cup cover  300  along the guide of the slot  3011 . The whole assembly process is more convenient. On this structure, the sealing structure between the vacuum pumping device  100  and the cup cover  300  can be any of the above. 
     After the vacuum pumping device  100  is mounted on the cup cover  300 , the pumping power element  120  in the vacuum pumping device  100  is powered on to evacuate the cup body  500 . Please referring to  FIG. 8  again, the vacuum pumping device  100  further includes a first power supply structure  140  electrically connected to the pumping power element  120 . The food processor  900  further includes a base  700 , and the cup body  500  is mounted on the base  700 . The base  700  is provided with a second power supply structure, and the first power supply structure  140  and the second power supply structure are independent of each other. 
     In the present disclosure, the vacuum pumping device  100  is provided with the first power supply structure  140 . The first power supply structure  140  and the second power supply structure in the base  700  are independent of each other, which simplifies the circuit design of the electrical connection, simplifies the structure of the food processor  900 , and also makes the vacuum pumping device  100  more portable and convenient to use. 
     The first power supply structure  140  of the present disclosure may be in various structural forms. In one embodiment, the first power supply structure  140  is provided with a power interface electrically connected to the pumping power element  120 , and the power interface is fixedly connected to the housing  110 . The power interface may be a USB interface or an existing terminal interface. During the process of using the vacuum pumping device  100 , the vacuum pumping device  100  can be matched with the commercial power supply to supply power to the pumping power element  120 , and can also be used to supply power to the pumping power element  120  by docking the mobile power supply currently on the market. After the end of use, it is only necessary to unplug the connector of the external power supply, so that the vacuum pumping device  100  is more convenient to carry and more convenient to use. 
     In another structural form of the first power supply structure  140 , the first power supply structure  140  is an energy storage device received in the housing  110  and electrically connected to the pumping power element  120 . The energy storage device can be a lithium battery or a dry battery. The dry battery can be a rechargeable dry battery or a non-rechargeable dry battery. The energy storage device is fixed in the housing  110  in the same way as the control circuit board  130 . By setting the first power supply structure  140  as an energy storage device built into the housing  110 , the vacuum pumping device  100  has a more complete function and is more convenient to use. 
     The first power supply structure  140  provides power for the control circuit board  130  and the pumping power element  120 . 
     Before the food processor  900  of the present disclosure is started, in order to further ensure that the vacuum pumping device  100  is mounted in place on the cup cover  300  to ensure the sealing of the inner cavity of the cup body  500 , please refer to  FIGS. 9 to 11  again, a mounting detection structure  400  is further provided between the cup cover  300  and the vacuum pumping device  100 , and the mounting detection structure  400  is configured to detect whether the vacuum pumping device  100  is mounted on the cup cover  300 . The mounting detection structure  400  may be electrically connected to the control circuit board  130 , and the mounting detection structure  400  may be designed to form a loop with the pumping power element  120  in series. When the mounting detection structure  400  is connected, the pumping power element  120  in the vacuum pumping device  100  is electrically connected to the first power supply structure  140 , so that the pumping power element  120  can start to perform the vacuuming operation. 
     In the present disclosure, the mounting detection structure  400  is configured to detect whether the vacuum pumping device  100  is mounted on the cup cover  300 , and after ensuring that the vacuum pumping device  100  is mounted on the cup cover  300 , the vacuuming device  100  and the cup cover  300  are accurately matched, and the air tightness is guaranteed, which can prevent air leakage during the vacuuming process of the vacuum pumping device  100  and make the vacuuming process smooth. 
     In one embodiment, the mounting detection structure  400  includes a trigger switch  410  disposed on the vacuum pumping device  100 , and a trigger member  420  corresponding to the trigger switch  410  and disposed on the cup cover  300 . When the vacuum pumping device  100  is mounted in the cup cover  300 , the trigger member  420  acts on the trigger switch  410 , so that the trigger switch  410  is turned on. 
     The trigger switch  410  of the present disclosure may be a magnetic switch, and the trigger member  420  is the magnetic member, and the trigger member  420  causes the trigger switch  410  to be turned on through magnetic action. 
     In one embodiment, the trigger switch  410  is a micro switch, and the trigger member  420  is a protrusion formed on the surface of the cup cover  300 . The trigger member  420  causes the trigger switch  410  to conduct through resisting action. 
     The trigger switch  410  may be fixed on the housing  110  of the vacuum pumping device  100  and connected in series with the pumping power element  120  to form a loop. The trigger member  420  is disposed on the surface of the cup cover  300  and is adjacent to the slot  3011  formed by the cup cover  300 . After the insertion portion  1131  of the vacuum pumping device  100  is inserted into the slot  3011  of the cup cover  300  and the vacuum pumping device  100  and the cup cover  300  are connected, the trigger switch  410  and the trigger member  420  are connected to make the trigger switch  410  electrically conductive. The connection between the trigger switch  410  and the trigger member  420  may be that the protrusion touches the micro switch to turn on the micro switch, or the magnetic member magnetically acts on the magnetic switch to turn on the magnetic switch. Then, the pumping power element  120  can be started in the next step when the inner cavity of the cup body  500  is sealed, to ensure the smooth progress of the vacuuming. 
     The trigger switch  410  is disposed at the edge of the insertion portion  1131 , and the trigger  420  is disposed at the edge of the slot  3011 . The setting makes the mounting detection structure  400  more reasonable. When the insertion portion  1131  is completely inserted into the slot  3011 , the mounting detection structure  400  is triggered, so that the detection is more accurate. 
     In the above contents, the trigger switch  410  can form a loop with the pumping power element  120 , so that the mounting detection structure is used as a judgment input signal for the activation of the pumping power element  120 . In other embodiments, the vacuum pumping device  100  further includes a prompting device (not shown) fixed to the housing  110 , the prompting device is electrically connected to the trigger switch  410 . When the trigger switch  410  is turned on, the prompting device sends a prompting message. 
     In one embodiment, the prompting device is a warning light or a buzzer fixed to the housing  120 . That is, the food processor of the present disclosure can prompt the user by sound or light whether the vacuum pumping device  100  is mounted on the cup cover  300 . 
     As can be seen from the above contents, in the present disclosure, the vacuum pumping device  100  and the base  700  of the food processor  900  are independent of each other, and the power supply structures of the two are independent of each other. In order to further improve the convenience of using the food processor  900 , please refer to  FIG. 23 , the vacuum pumping device  100  of the present disclosure further includes a control circuit board  130  and a start switch  150  mounted on the housing  110 . The control circuit board  130  receives the start signal of the start switch  150  and controls the pumping power element  120  to start. 
     In the present disclosure, a start switch  150  for controlling the start of the pumping power element  120  is provided on the vacuum pumping device  100 . In this way, when the vacuum pumping device  100  performs the vacuuming operation on the food processor  900 , the vacuum pumping device  100  can be independently started by operating the start switch  150 . 
     During the use of the food processor  900 , the vacuum pumping device  100  can not only evacuate the ingredients before the ingredients of the food processor  900  are stirred, but also evacuate as needed during the stirring of the ingredients, which makes the food processor  900  more convenient in use. 
     In one embodiment, a switch fixing member  1115  and a switch limiting member  1116  are connected to the inner surface of the housing  110 , and the switch fixing member  1115  and the switch limiting member  1116  extend into the receiving cavity. The switch fixing member  1115  and the switch limiting member  1116  are oppositely arranged and cooperate to form a switch mounting space  1117 , and the start switch  150  is located in the switch mounting space  1117  and fixedly connected to the housing  110 . 
     The switch fixing member  1115  and the switch limiting member  1116  are oppositely arranged and cooperate to form a switch mounting space  1117 , so that the connection structure of the start switch  150  and the housing  110  is firm, and the start switch  150  is not easy to fall off the housing  110  when the start switch  150  is pressed. 
     Further, the free end of the switch limiting member  1116  is provided with a limiting portion  1118 . The limiting portion  1118  stops the start switch  150  so that the start switch  150  is located in the switch mounting space  1117 . 
     The limiting portion  1118  is in the shape of an inverted hook, which is provided at the end (that is, the free end) of the switch limiting member  1116  that is not connected to the housing  110 . By providing the limiting portion  1118 , when the start switch  150  is pressed, the start switch  150  is less likely to fall out of the switch mounting space  1117  in the axial direction in which it is deformed, so that the mounting structure of the start switch  150  is stronger. 
     In one embodiment, the start switch  140  is a micro switch or a touch switch. The vacuum pumping device  100  of the present disclosure is a touch mechanical start. Of course, in other embodiments, it may be further configured to be started remotely, that is, a signal receiver (not shown) is also provided in the vacuum pumping device  100  of the present disclosure. The signal receiver is electrically connected to the control circuit board  130 , and the start switch  150  forms an electrical signal circuit with the pumping power element  120  and the control circuit board  130 . The food processor  900  of the present disclosure is also provided with a remote controller that communicates with the signal receiver in the vacuum pumping device  100 , and the remote controller can send a control signal to the receiver. The control circuit board  130  turns on the start switch  150  according to the signal, so that the pumping power element  120  turned on, so that the food processor can not only realize the mechanical touch and press start, but also realize the remote control start, making the use of the food processor  900  more convenient. 
     In order to further improve the convenience of using the food processor  900 , the start switch  150  is connected to the side wall or the top wall of the housing  110 . With such setting, the operation of touching and pressing the start switch  150  is more convenient. 
     Referring to  FIGS. 15 to 20 , in order to ensure the smooth pumping process of the food processor  900  of the present disclosure, to avoid the residue of the ingredients in the cup body  500  entering the pumping power element  120  during the pumping process, the pumping air path is blocked. The food processor  900  of the present disclosure is also provided with a waterproof and breathable structure (not shown). The waterproof and breathable structure is mounted on the cup cover  300  and covers the pumping opening  301  (as shown in  FIGS. 20 and 22 ). In one embodiment, the waterproof and breathable structure is mounted in the vacuum pumping device  100  and covers the pumping hole  101  (see  FIGS. 15 and 19 ). 
     In the present disclosure, the waterproof and breathable structure is provided on the cup cover  300  or in the vacuum pumping device  100 . During the vacuuming process of the cup cover  300  by the vacuum pumping device  100 , the waterproof and breathable structure can block the food residues in the cup body  500  from entering the pumping air path to damage the pumping power element  120  or block the pumping air path, thus ensuring the smooth vacuuming process of the vacuum pumping device  100 . 
     In the present disclosure, the waterproof and breathable structure may be a waterproof and breathable membrane  820 , or the waterproof and breathable structure includes a mounting cylinder  810  and a waterproof and breathable membrane  820 , the mounting cylinder  810  is formed with passages through both ends of the mounting cylinder  810 , and the waterproof and breathable membrane  820  is fixedly connected to the mounting cylinder  810  and covers the channel. The waterproof and breathable membrane  820  may be a mesh screen sheet  1200 . The mounting cylinder  810  is a cylindrical structure. Specifically, when the waterproof and breathable structure is a separately provided waterproof and breathable membrane  820 , the waterproof and breathable membrane  820  is fixedly connected to the cup cover  300  and covers the pumping opening  301 ; or, the waterproof and breathable membrane  820  is fixedly connected and sealed to the vacuum pumping device  100  and covers the pumping hole  101 . When the waterproof and breathable membrane  820  is mounted in the vacuum pumping device  100 , the waterproof and breathable membrane  820  is fixedly connected to the housing  110 . When the waterproof and breathable membrane  820  is disposed on the cup cover  300 , the waterproof and breathable membrane  820  may be fixedly connected to the cylindrical connection portion  310  on the cup cover  300  and seal the inner cavity of the cylindrical connection portion  310 . When the waterproof and breathable structure is a matching structure of the mounting cylinder  810  and the waterproof and breathable membrane  820 , in the present disclosure, a pumping nozzle may be protruded from the vacuum pumping device  100  at the pumping hole  101 . That is, the pumping hole  101  is provided on the bottom wall of the pumping nozzle, and the mounting cylinder  810  is connected in a threaded manner with the pumping nozzle. When the waterproof and breathable structure is provided on the cup cover  300 , an external thread  1153  may be provided on the outer wall of the connecting portion  310  of the cylindrical structure of the cup cover  300 , and the end of the mounting cylinder  810  connected to the cup cover  300  is screwed to the connecting portion  310 . That is, the housing  300  is formed with a pumping nozzle inside the sealing ring mounting portion  115 , and the mounting cylinder  810  is sleeved on the outside of the pumping nozzle; or, the mounting cylinder  810  is sleeved on an end of the connecting portion  310  extending into the cup body  500 . 
     In the present disclosure, when the waterproof and breathable structure is a separately provided waterproof and breathable membrane  820 , the entire structure is simple and the cost is low. When the waterproof and breathable structure is a combined structure of the mounting cylinder  810  and the waterproof and breathable membrane  820 , it is more convenient to disassemble and assemble. 
     After the food processor  900  is evacuated and the ingredients are stirred, the cup body  500  of the food processor  900  will be depressurized before opening the cup cover. Of course, in other cases, as long as the pressure relief operation is required, the pressure relief operation can also be performed. In the present disclosure, the following structural design can be carried out in solving the pressure relief method. 
     Referring to  FIG. 15  and  FIG. 16 , in an embodiment of the pressure relief structure of the food processor  900 , the cup cover  300  is also provided with a pressure relief hole  302  communicating with the inner cavity of the cup body  500 . A pressure relief valve  600  for opening or closing the pressure relief hole  302  is also mounted at the pressure relief hole  302 . 
     In the present embodiment, when the vacuum pumping device  100  vacuums the inside of the cup body  500 , the pressure relief valve  600  closes the pressure relief hole  302 , so that a closed cavity structure is formed in the cup body  500 . When the cup cover  300  needs to be opened, the pressure relief hole  103  is opened by operating the pressure relief valve  600 . The outside air enters the cup body  500  through the pressure relief hole  302  so that the pressure in the cup body  500  and the outside pressure are balanced, so that the operation of opening the cup cover  300  can proceed smoothly. In order to facilitate the pressure relief operation, the pressure relief valve  600  installed in the cup cover  300  is located at the edge of the cup cover  300  and is spaced from the slot  3011 . That is, after the vacuum pumping device  100  is installed on the cup cover  300 , the housing  110  of the vacuum pumping device  100  will not touch the pressure relief valve  600 . In one embodiment, there is an interval between the pressure relief valve  600  and the housing  110  of the vacuum pumping device  100 , for example, a one-centimeter interval. In this way, after the evacuation of the vacuum pumping device  100  is completed, it is easier for the operator to operate the pressure relief valve  600  to open the pressure relief hole  302 . 
     It should be noted that in the above, we have introduced the case where there are multiple pumping gas paths in the vacuum pumping device  100 . When the pressure relief valve  600  is provided in the cup cover  300 , the first to fourth types of pumping gas paths in the vacuum pumping device  100  are applicable. 
     In the present disclosure, by providing a pressure relief valve  600  on the cup cover  300 , when a pressure relief operation is required, the pressure relief gas path is shorter, the pressure relief operation is faster, and the structure is relatively simple. 
     In the present disclosure, the specific structure of the pressure relief valve  600  on the cup cover  300  can be divided into two structural forms. 
     Referring to  FIG. 15  and  FIG. 16  again, in the first structural form of the pressure relief valve  600 , the pressure relief valve  600  includes a pressure relief valve mounting portion  610 , a valve wing  620  connected to one end of the pressure relief valve mounting portion  610 , and a pressure relief valve fixing portion  630  connected to the other end of the pressure relief valve mounting portion  610 . The cup cover  300  further includes a mounting hole  303  adjacent to the pressure relief hole  302 , the pressure relief valve mounting portion  610  slides through the mounting hole  303 , the valve wing  620  is located outside the cup cover  300 , the pressure relief valve fixing portion  630  is located inside the cup cover  300 , the pressure relief valve  600  is configured to slide relative to the mounting hole  303  to allow the valve wing  620  to open or close the pressure relief hole  302 , and the pressure relief valve fixing portion  630  is stopped by an inner wall of the cup cover  300  after the valve wing  620  is away from the pressure relief hole  302  and configured to open the pressure relief hole  302 . 
     In the present embodiment, under the action of the suction force of the pumping power element  120 , the pressure relief valve  600  relatively slides between the pressure relief valve mounting portion  610  and the pressure relief hole  302 , and the valve wing  620  is near the pressure relief hole  302  to close the pressure relief hole  302 . However, when a pressure relief operation is required, by pulling the pressure relief valve  600  to make the valve wing  620  move away from the cup cover  300  to open the pressure relief hole  302 , the first structure of the pressure relief valve  600  is relatively simple. 
     In the present embodiment, the mounting hole  303  is in a ring shape, and the pressure relief hole  302  surrounds the periphery of the mounting hole  303 . The mounting hole  303  is located in the center of the ring formed by the pressure relief hole  302 , to ensure that the pressure relief valve  600  is evenly stressed when the pressure relief hole  302  slides relative to the mounting hole  303  to open or close the pressure relief hole  302 . In addition, the movement is a linear movement away from or close to the cup cover  300 , which facilitates opening and closing operations, and the airtightness of the pressure relief valve  600  to close the pressure relief hole  302  is also high. 
     In order to further improve the airtightness of the pressure relief valve  600  when closing the pressure relief hole  302 , the outer wall of the cup cover  300  is also concavely provided with a limiting groove  3013 , and the pressure relief hole  302  penetrates the bottom wall of the limiting groove  3013 . When the valve wing  620  approaches and closes the pressure relief hole  302 , the valve wing  620  is fitted into the limiting groove  3013 . 
     Referring to  FIG. 17  and  FIG. 18 , in the second structural form of the pressure relief valve  600 , the pressure relief valve  600  includes a pressure relief valve mounting portion  610 , a pressing portion  640  connected to one end of the pressure relief valve mounting portion  610 , and a valve wing  620  connected to the other end of the pressure relief valve mounting portion  610 . The pressure relief valve mounting portion  610  slides through the mounting hole  302 . The diameter of the pressure relief hole  302  is larger than the outer diameter of the pressure relief valve mounting portion  610 . The pressing portion  640  is located outside the cup cover  300 . The valve wing  620  is located inside the cup cover  300 . The pressure relief valve mounting portion  610  is further sleeved with an elastic member  660 , one end of the elastic member  660  abuts on the pressing portion  640 , and the other end of the elastic member  660  abuts on the cup cover  300 , the elastic member  660  provides an elastic force to drive the valve wing  620  to abut on the inner surface of the cup cover  300  and cover the pressure relief hole  302 , and under an external force, the valve wing  620  is away from the pressure relief hole  302  and configured to open the pressure relief hole  302 . 
     In the present disclosure, the second structure of the pressure relief valve  600  is configured as an elastic pressure relief valve  600  structure. During the pressure relief operation, it is only necessary to press the pressing portion  640 , and the pressure relief operation is more convenient. 
     Further, in the present embodiment, a sealing gasket  650  is also mounted on the side of the valve wing  620  towards the cup cover  300 . The sealing gasket  650  may be made of a silicone material, which may be integrally formed on the valve wing  620 . When the pressure relief valve  600  closes the pressure relief hole  302 , the sealing gasket  650  covers the pressure relief hole  302 , and the tightness of the sealing process can be further improved by the setting of the sealing gasket  650 . 
     Further, in the present embodiment, the outer surface of the cup cover  300  is also provided with a limiting cylinder  3015 , and the limiting cylinder  1113  surrounds the periphery of the valve wing  620 . The setting of the limit cylinder  3015  can improve the smoothness of the process when the pressure relief valve  600  is pressed. 
     The above describes the case where the pressure relief valve  600  is provided in the cup cover  300 . Referring to  FIG. 20  to  FIG. 22 , in another embodiment of the pressure relief structure of the food processor  900 , the vacuum pumping device  100  is provided with a pumping air path and a pressure relief air path. The vacuum pumping device  100  is also installed with a pressure relief valve  600  that opens or closes the pressure relief air path. The food processor  900  has a first use state and a second use state. In the first use state, the pumping air path communicates with the pumping opening  301  to vacuums the inner cavity of the cup boy  500 . In the second use state, the pressure relief valve  600  opens the pressure relief air path so that the pressure relief air path communicates with the pumping opening  301  to perform pressure relief processing on the inner cavity of the cup body  500 . 
     In the present disclosure, the pumping air path of the vacuum pumping device  100  can be selected when the housing  110  of the vacuum pumping device  100  forms a sealed cavity, that is, the first and second types of pumping air paths of the vacuum pumping device  100  can be selected from the above. 
     Embodiments of the present disclosure, the vacuum pumping device  100  is detachably mounted on the food processor  900 , and the vacuum pumping device  100  is provided with a pumping air path and a pressure relief air path. When the food processor  900  needs to be evacuated, the pumping air path leads to the inner cavity of the cup body  500 . When a pressure relief operation is required, the pressure relief valve  600  opens the pressure relief air path so that the pressure relief air path communicates with the pumping opening  301  of the cup cover  300 . In this way, the food processor  900  is prevented from being oxidized by the action of the ingredients and the air during the stirring process, and the food ingredient processing effect of the food processor  900  is improved. 
     In one embodiment, a closed receiving cavity is formed on the housing  110 , the housing  110  is also provided with a pumping hole  102 . The pumping hole  101  and the pressure relief hole  103  both are configured to communicate with the receiving cavity, an air inlet  121  of the pumping power element  120  is configured to communicate with the receiving cavity, the exhaust hole  102  is configured to communicate with an air outlet of the pumping power element  120  through a pipeline, and the pumping hole  101  is configured to communicate with the pumping opening  301  after the vacuum pumping device  100  is mounted on the cup cover  300 . 
     The pumping hole  101 , the receiving cavity, and the pressure relief hole  103  communicate with each other to form a pressure relief air path. The pumping hole  101 , the receiving cavity, the pumping power element  120 , and the exhaust hole  102  communicate with each other to form a pumping air path. 
     In the present disclosure, when the pressure relief valve  600  is provided on the vacuum pumping device  100 , the specific structure of the pressure relief valve  600  can also be divided into two structural forms. 
     Referring to  FIG. 20  and  FIG. 21  again, in the first structural form of the pressure relief valve  600 , the pressure relief valve  600  includes a pressure relief valve mounting portion  610 , a valve wing  620  connected to one end of the pressure relief valve mounting portion  610 , and a pressure relief valve fixing portion  630  connected to the other end of the pressure relief valve mounting portion  610 . The cup cover  300  further includes a mounting hole  104  adjacent to the pressure relief hole  103 , the pressure relief valve mounting portion  610  slides through the mounting hole  104 , the valve wing  620  is located outside the cup cover  300 , the pressure relief valve fixing portion  630  is located inside the cup cover  300 , the pressure relief valve  600  is configured to slide relative to the mounting hole  104  to allow the valve wing  620  to open or close the pressure relief hole  103 , and the pressure relief valve fixing portion  630  is stopped by an inner wall of the cup cover  300  after the valve wing  620  is away from the pressure relief hole  103  and configured to open the pressure relief hole  103 . 
     In the present embodiment, under the action of the suction force of the pumping power element  120 , the pressure relief valve  600  relatively slides between the pressure relief valve mounting portion  610  and the pressure relief hole  103 , and the valve wing  620  is near the pressure relief hole  103  to close the pressure relief hole  103 . However, when a pressure relief operation is required, by pulling the pressure relief valve  600  to make the valve wing  620  move away from the cup cover  300  to open the pressure relief hole  103 , the first structure of the pressure relief valve  600  is relatively simple. 
     In the present embodiment, the mounting hole  104  is in a ring shape, and the pressure relief hole  103  surrounds the periphery of the mounting hole  104 . The mounting hole  104  is located in the center of the ring formed by the pressure relief hole  103 , to ensure that the pressure relief valve  600  is evenly stressed when the pressure relief hole  103  slides relative to the mounting hole  104  to open or close the pressure relief hole  103 . In addition, the movement is a linear movement away from or close to the cup cover  300 , which facilitates opening and closing operations, and the airtightness of the pressure relief valve  600  to close the pressure relief hole  103  is also high. 
     In order to further improve the airtightness of the pressure relief valve  600  when closing the pressure relief hole  103 , the outer wall of the cup cover  300  is also concavely provided with a limiting groove  1111 , and the pressure relief hole  103  penetrates the bottom wall of the limiting groove  1111 . When the valve wing  620  approaches and closes the pressure relief hole  103 , the valve wing  620  is fitted into the limiting groove  1111 . 
     Referring to  FIG. 22 , in the second structural form of the pressure relief valve  600 , the pressure relief valve  600  includes a pressure relief valve mounting portion  610 , a pressing portion  640  connected to one end of the pressure relief valve mounting portion  610 , and a valve wing  620  connected to the other end of the pressure relief valve mounting portion  610 . The pressure relief valve mounting portion  610  slides through the pressure relief hole  103 . The pressing portion  640  is located outside the cup cover  300 . The valve wing  620  is located inside the cup cover  300 . The pressure relief valve mounting portion  610  is further sleeved with an elastic member  660 , one end of the elastic member  660  abuts on the pressing portion  640 , and the other end of the elastic member  660  abuts on the cup cover  300 , the elastic member  660  provides an elastic force to drive the valve wing  620  to abut on the inner surface of the cup cover  300  and cover the pressure relief hole  103 , and under an external force, the valve wing  620  is away from the pressure relief hole  103  and configured to open the pressure relief hole  103 . 
     In the present disclosure, the second structure of the pressure relief valve  600  is configured as an elastic pressure relief valve  600  structure. During the pressure relief operation, it is only necessary to press the pressing portion  640 , and the pressure relief operation is more convenient. 
     Further, in the present embodiment, a sealing gasket  650  is also mounted on the side of the valve wing  620  towards the cup cover  300 . The sealing gasket  650  may be made of a silicone material, which may be integrally formed on the valve wing  620 . When the pressure relief valve  600  closes the pressure relief hole  103 , the sealing gasket  650  covers the pressure relief hole  103 , and the tightness of the sealing process can be further improved by the setting of the sealing gasket  650 . 
     Further, in the present embodiment, the outer surface of the cup cover  300  is also provided with a limiting cylinder  1113 , and the limiting cylinder  1113  surrounds the periphery of the valve wing  620 . The setting of the limiting cylinder  1113  can improve the smoothness of the process when the pressure relief valve  600  is pressed. 
     Further, in order to realize that the food processor of the present disclosure can automatically stop the operation of the vacuum pumping device after the vacuum degree reaches a preset value, the vacuum pumping device further includes a detection module (not shown). In some feasible embodiments, the detection module is a current detection module, and the current detection module is connected in series on the circuit between the control circuit board  130  and the pumping power element  120  to detect the current of the pumping power element  120  during operation. 
     In the present disclosure, the detection module is a current detection module, which may specifically be an ammeter or a current sensor. The detection module is received in the receiving cavity. The detection module is connected in series on the circuit between the control circuit board  130  and the pumping power element  53  to detect the current of the pumping power element  53  during operation. In other embodiments, the detection module may also be replaced by a voltage detection module. Since the pumping power element  53  extracts the air in the cavity of the cup body  500 , the amount of air in the cavity of the cup body  500  gradually decreases, therefore, the current of the pumping power element  53  gradually increases during the vacuuming process, and the rate of current increase gradually decreases until the trend of the current increase approaches zero at the end. At this time, it is necessary to control the pumping power element  120  to stop running, to protect the vacuum pumping device  50  and prevent the vacuum pumping device  100  from burning out, improving the safety and operating reliability of the vacuum pumping device. 
     Further, in some feasible embodiments, the detection module is an air pressure detection module, and the air pressure detection module is electrically or wirelessly connected to the control circuit board  130  to detect the suction pressure of the pumping power element  120 . 
     Further, the air pressure detection module is a pressure sensor, and the pressure sensor is disposed between the air inlet  121  and the pumping hole  512  to detect the suction pressure of the pumping power element  120  during operation. 
     In the present disclosure, the detection module is an air pressure detection module, which may specifically be a pressure sensor or an air pressure detection meter, and the air pressure detection module is received in the receiving cavity. The air pressure detection module is provided at the air inlet  121  of the pumping power element  120 , and is electrically or wirelessly connected to the control circuit board  130 , and is mainly used to detect the suction pressure of the pumping power element  53  during operation. Since the pumping power element  53  extracts the air in the cavity of the cup body  500 , the amount of air in the cavity of the cup body  500  gradually decreases, therefore, the air pressure of the pumping power element  53  gradually increases during the vacuuming process, and the rate of air pressure increase gradually decreases until the trend of the air pressure increase approaches zero at the end. At this time, it is necessary to control the pumping power element  120  to stop running, to protect the vacuum pumping device  50  and prevent the vacuum pumping device  100  from burning out, improving the safety and operating reliability of the vacuum pumping device. 
     Further, in some feasible embodiments, the detection module is a timer, and the timer is electrically connected to the control circuit board  130  to record the running time of the pumping power element  120 . 
     In the present embodiment, the detection module is the timer, and the timer is received in the receiving cavity formed by the housing  110 . The timer is electrically connected to the control circuit board  130 , or the timer is electrically connected to the pumping power element  120 , or the timer is connected in series on the current loop between the control circuit board  130  and the pumping power element  53 . The timer starts counting when the control circuit board  130  inputs current to the pumping power element  120 , and when the control circuit board  130  stops inputting current to the pumping power element  53 , the timer stops counting, and then records the running time of the pumping power element  120 . The running time is related to the volume V of the inner cavity of the cup body  500  and the pumping flow rate v of the pumping power element  53 , which is generally  30  seconds to  120  seconds, in one embodiment  90  seconds. When performing fuzzy control on the vacuum pumping device  50 , the vacuum pumping device  50  may be stopped after  90  seconds of starting operation to ensure the safety and reliability of the vacuum pumping device  50 .