Patent Publication Number: US-2022221075-A1

Title: Pressure-regulating-type sub-machine of soda machine

Description:
CROSS-REFERENCE TO RELATED APPLICATION(S) 
     This application is a  371  International Patent Application No. PCT/CN2020/090847, filed on May 18, 2020, which claims the priority and benefit of Chinese patent application number 201920729409.5, filed May 20, 2019 with China National Intellectual Property Administration, the entire contents of which are incorporated herein by reference. 
    
    
     TECHNICAL FIELD 
     The present Patent relates to a soda machine, in particular to a sub-machine of a soda machine. 
     BACKGROUND 
     At present, in the prior art, a sub-machine of a soda machine comprises a positioning seat, a sub-machine upper housing, a sub-machine main body, a sub-machine bottom cover, a conical ring, a water bottle connecting port, an gas nozzle rod and a soda bottle. The sub-machine main body is provided with an air inlet seat, an air outlet cavity communicated with the air inlet seat, a safety valve and a pressure relief valve. The pressure relief valve comprises a pressure relief valve body, a valve core, a pressure spring and an adjustment nut which are provided on the sub-machine main body. A vent hole is provided on the pressure relief valve body. The valve core, the pressure spring and the adjustment nut are provided in the pressure relief valve body from bottom to top. The adjustment nut is screwed with the internal thread at the upper end of the pressure relief valve body. The sub-machine main body is provided in the sub-machine upper housing. The upper part of the sub-machine main body extends out of the upper housing. The outer edgefold of the conical ring is provided on the bottom plate of the counterbore surrounding the air outlet cavity. The upper end of the water bottle connecting port presses the outer edgefold. The sub-machine bottom cover is connected with the lower end of the sub-machine upper housing and the water bottle connecting port. The positioning seat is connected with the sub-machine upper housing. The upper end of the gas nozzle rod passes through the conical ring and is connected with the air inlet cavity through an air inlet nut. The existing problem is that the adjustment nut is located in the space between the positioning seat and the sub-machine upper housing, and the positioning seat is fixedly connected with the sub-machine upper housing. The sub-machine is only suitable for preparing soda having one concentration, but cannot meet the demand of consumers for soda with different CO2 concentrations. 
     SUMMARY 
     The purpose of the present Patent is to provide a pressure-regulating-type sub-machine of a soda machine, which has the characteristic of convenient pressure adjustment of the pressure relief valve. The sub-machine is capable of preparing soda with different CO2 concentrations and is convenient to use, meeting the demand of consumers for soda with different CO2 concentrations. 
     The present Patent is realized as follows: a pressure-regulating-type sub-machine of a soda machine, comprising a positioning seat, a sub-machine upper housing, a sub-machine main body, a sub-machine bottom cover, a conical ring, a water bottle connecting port, a gas nozzle rod, and a soda bottle, wherein the sub-machine main body is provided with an air inlet seat, an air outlet cavity communicated with the air inlet seat, a safety valve and a pressure relief valve, the pressure relief valve comprises a pressure relief valve body, a valve core, a pressure spring and an adjustment nut which are provided on the sub-machine main body, the valve core, the pressure spring and the adjustment nut are provided in the pressure relief valve body from bottom to top, and the adjustment nut is screwed with the internal thread at the upper end of the pressure relief valve body; the sub-machine main body is provided in the sub-machine upper housing, the upper part of the sub-machine main body extends out of the upper housing, the outer edgefold of the conical ring is provided on the bottom plate of the counterbore surrounding the air outlet cavity, and the upper end of the water bottle connecting port presses the outer edgefold; the sub-machine bottom cover is connected with the lower end of the sub-machine upper housing and the water bottle connecting port, the positioning seat is connected with the sub-machine upper housing; the upper end of the gas nozzle rod passes through the conical ring and is connected with the air inlet cavity through an air inlet nut; wherein the sub-machine upper housing further comprises an arc-shaped guide cavity having an upper opening and provided at the edge of the top, a fixed shaft, an arc-shaped rack, a middle transmission wheel, and a driving gear; 
     the arc-shaped guide cavity has a radial outer side wall provided with a guide groove having an upper opening and a radial inner side wall provided with a through hole; 
     the radial outer side of the arc-shaped rack is provided with an operating rod; 
     the middle transmission wheel comprises an upper gear and a lower gear; 
     the arc-shaped rack is slidably fitted with the arc-shaped guide cavity, the middle transmission wheel is rotatably fitted with the fixed shaft, the arc-shaped rack meshes with the lower gear; the driving gear is fixedly connected to the upper end of the adjustment nut, the driving gear meshes with the upper gear, the operating rod is slidably fitted with the guide groove, and the lower end of the positioning seat and the guide groove form a guide hole. 
     According to the pressure-regulating-type sub-machine of a soda machine, the upper part of the internal thread of the pressure relief valve body is provided with a shaft sleeve; 
     a shaft body is provided between the adjustment nut and the driving gear, and the shaft body is fitted with the shaft sleeve. 
     According to the pressure-regulating-type sub-machine of a soda machine, the end of the operating rod is provided with a driving plate provided longitudinally, and the driving plate is opposite to the outer surface of the sub-machine upper housing. 
     According to the pressure-regulating-type sub-machine of a soda machine, the pressure-regulating-type sub-machine of a soda machine further comprises a stopper and a pressure spring, wherein the stopper comprises a hemispherical head, a disc body and a rod part; 
     the bottom plate of the arc-shaped guide cavity is provided with a circular containing cavity with an upper opening, and the axial lower end of the arc-shaped rack is provided with a plurality of gear holes with spherical curved surfaces having lower openings; 
     the rod passes through the pressure spring, the disc body is located in the circular containing cavity, the lower end of the pressure spring is fitted with the bottom plate of the circular containing cavity, and the hemispherical head is fitted with the gear hole. 
     The present Patent relates to a pressure-regulating-type sub-machine of a soda machine. Since such a structure is used, the arc-shaped rack is rotated to drive the middle transmission wheel, and the middle transmission wheel drives the adjustment nut, thereby achieving the purpose of preparing soda having different concentrations by adjusting an elastic force of a spring, which is convenient to use. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a sectional view of the present Patent. 
         FIG. 2  is a view A-A of  FIG. 1 . 
         FIG. 3  is a view B-B of  FIG. 2 . 
         FIG. 4  is a first perspective exploded view of the present Patent. 
         FIG. 5  is a second perspective exploded view of the present Patent. 
         FIG. 6  is a perspective exploded view of a pressure relief valve according to the present Patent. 
         FIG. 7  is a perspective view of the present Patent. 
         FIG. 8  is a partial perspective view of the present Patent. 
         FIG. 9  is a perspective view of a circular rack according to the present Patent. 
     
    
    
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
     The present Patent will be further described with reference to the attached drawings. 
     As shown in  FIG. 1 , a pressure-regulating-type sub-machine of a soda machine comprises a positioning seat  1 , a sub-machine upper housing  2 , a sub-machine main body  3 , a sub-machine bottom cover  21 , a conical ring  4 , a water bottle connecting port  5 , a gas nozzle rod  6 , and a soda bottle  8 . The sub-machine main body  3  is provided with an air inlet seat  31 , an air outlet cavity  32  communicated with the air inlet seat, a safety valve  9  and a pressure relief valve  10 . The pressure relief valve  10  comprises a pressure relief valve body  33 , a valve core  101 , a pressure spring  102  and an adjustment nut  103  which are provided on the sub-machine main body  3 . The upper part of the pressure relief valve body  33  is provided with a threaded part  331 , and the lower end thereof is provided with a valve core seat  332 . The body part of the valve core  101  is provided with an axial protrusion  1011 , and the end thereof is provided with a spring seat  1012 . The valve core  332  is communicated with the soda bottle  8  through a conical ring  4 . The valve core  101 , the pressure spring  102  and the adjustment nut  103  are provided in the pressure relief valve body  33  from bottom to top. The head  1013  of the valve core  101  is fitted with the valve core seat  332 . The axial protrusion  1011  is slidably fitted with the inner wall of the pressure relief valve body  33 . The spring seat  1012  is inserted into the lower end of the pressure spring  102 . The end of the body part is fitted with the pressure spring  102 . The other end of the pressure spring is fitted with the counterbore  103 A at the end of the adjustment nut  103 . The adjustment nut  103  is screwed with the internal thread  331  at the upper end of the pressure relief valve body  33 . The lower end of the valve core  10  is fitted with the valve core seat  332 . The vent hole of the pressure relief valve body  33  is opposite to two adjacent axial protrusions  1011  on the valve core  101 . The sub-machine main body  3  is provided in the sub-machine upper housing  2 . The upper part of the sub-machine main body  3  extends out of the upper housing  2 . The outer edgefold of the conical ring  4  is provided on the bottom plate of the counterbore surrounding the air outlet cavity  32 . The upper end of the water bottle connecting port  4  presses the outer edgefold. The sub-machine bottom cover  21  is connected with the lower end of the sub-machine upper housing  2  and the water bottle connecting port  5 . The positioning seat  1  is connected with the sub-machine upper housing  2 . The upper end of the gas nozzle rod  6  passes through the conical ring  4  and is connected with the air inlet cavity  32  through an air inlet nut. 
     The sub-machine upper housing  2  further comprises an arc-shaped guide cavity  22  having an upper opening and provided at the edge of the top, a fixed shaft  34  provided on the sub-machine main body  3 , an arc-shaped rack  11 , a middle transmission wheel  12 , and a driving gear  13 . 
     The arc-shaped guide cavity  22  has a radial outer side wall provided with a guide groove  221  having an upper opening and a radial inner side wall provided with a through hole  222 . 
     The radial outer side of the arc-shaped rack  11  is provided with an operating rod  111 . 
     The middle transmission wheel  12  comprises an upper gear  121  and a lower gear  122 . 
     The arc-shaped rack  11  is slidably fitted with the arc-shaped guide cavity  22 . The middle transmission wheel  12  is rotatably fitted with the fixed shaft  34 . The arc-shaped rack  11  meshes with the lower gear  122 . The driving gear  13  is fixedly connected to the upper end of the adjustment nut  103 . The driving gear  13  meshes with the upper gear  121 . The operating rod  111  is slidably fitted with the guide groove  221 . The lower end of the positioning seat  1  and the guide groove  221  form a guide hole. 
     The pressure-regulating-type sub-machine of a soda machine further comprises a stopper  14  and a pressure spring  15 , wherein the stopper  14  comprises a hemispherical head  141 , a disc body  142  and a rod part  143 . 
     The bottom plate of the arc-shaped guide cavity  22  is provided with a circular containing cavity with an upper opening, and the axial lower end of the arc-shaped rack  11  is provided with four gear holes  113  with spherical curved surfaces having lower openings. 
     The rod  143  passes through the pressure spring  15 . The disc body  142  is located in the circular containing cavity. The lower end of the pressure spring  15  is fitted with the bottom plate of the circular containing cavity. The hemispherical head  141  is fitted with the gear hole  113 . 
     The sub-machine upper housing  2  is further provided with a gear identifier  23 , which is divided into four gears. 
     The upper part of the internal thread  331  of the pressure relief valve body  33  is provided with a shaft sleeve  333 . 
     A shaft body  131  is provided between the adjustment nut  103  and the driving gear  13 , and the shaft body  131  is fitted with the shaft sleeve  333 . 
     The end of the operating rod  111  is provided with a driving plate  112  provided longitudinally, and the driving plate  112  is opposite to the outer surface of the sub-machine upper housing  2 . 
     In the state shown in  FIG. 5  and  FIG. 7 , when the driving plate  112  is operated, the circular rack rotates clockwise. The middle transmission wheel  12  rotates clockwise. The driving gear  13  rotates counterclockwise. The adjustment nut  103  moves upward. The elastic force of the pressure spring  102  decreases. The pressure in the soda machine  7  decreases, so that the pressure can be released, which can be used for preparing low-concentration soda. 
     In the state shown in  FIG. 1 ,  FIG. 5  and  FIG. 7 , the elastic force of the pressure spring  102  is maximal, and the pressure of the soda bottle  7  is maximal, which can be used for preparing high-concentration soda. 
     The above is only the preferred embodiment of the present Patent. It should be pointed out that several improvements and modifications can be made without departing from the principle of the present Patent for those skilled in the art, which is also regarded as the scope of protection of the present Patent.