Abstract:
The multi-function juicer is a tool used for meat grinding and juice extraction. By changing the blade and screw bolt inside, it can serve the double purpose of either meat grinding or juice extraction. By repetitively rotating the handle, the screw bolt and the blade will rotate, too. This will drive the meat to pass through the pedal blade to smash into smaller ground meat, or drive the fruit to pass through the rotating blade and screw bolt to extract juice. The wetness of the pulp can be adjusted by controlling the wetness control unit. There is no need for extra processes to separate the juice from pulp, or to control the wetness of the pulp. It provides a convenient way to use one simple juicer to extract juice from different fruits. The other special point of this invention is that it has a vacuum disk on the bottom. Before meat grinding or juice extraction, the user only needs to rotate the handle inside the body. Then this multi-function juicer will be mounted to the kitchen table, which is very convenient.

Description:
TECHNICAL FIELD 
       [0001]    The present invention is a multi-function juicer. To be specific, it is a multi-function juicer with a vacuum base to mount the juicer, with manual meat grinding and juice extraction devices. 
       BACKGROUND TECHNOLOGY 
       [0002]    Juicers are used to extract juice from vegetables/fruits. Current juicers can be categorized into two types: manual and electric. Both of them use two methods to extract juice. One of them is to place the fruit on the juicer and press it manually. The juice that is pressed out will flow out. A filtering device is then used to separate pulp from the juice. The problem with this approach is that it only works with fruits that can be pressed to break juice out. The other approach is to smash the peeled fruit with blades to get juice. The problem with this approach is that it requires extra steps to separate juice and pulp in the final stage. It adds extra work to the process and does not provide a single juicer to extract juice from different fruits. 
       SUMMARY OF THE INVENTION 
       [0003]    Based on the above-mentioned issues, this invention provides a multi-function juicer with a vacuum base to mount the juicer body. It can easily manually grind meat or extract fruit juice. When extracting juice, it can also control the wetness of the pulp by adjusting a wetness control unit. It does not require extra steps to separate juice and pulp. 
         [0004]    In order to realize these goals, this invention provides a multi-function juicer, which includes the following components: 
         [0005]    A vacuum mounting base unit on the bottom of the multi-function juicer. This vacuum base includes: 
         [0006]    A vacuum disk that is on the bottom of the mounting vacuum base unit; 
         [0007]    A base that covers the abovementioned vacuum disk; 
         [0008]    A vacuum disk shelf on top of the vacuum disk; 
         [0009]    A vacuum disk controller inside the base; 
         [0010]    A controller fixing unit that is on the side of the base to lock the vacuum base controller; 
         [0011]    A controller cover that is used to cover one side of the base; 
         [0012]    A vacuum disk control handler on the other side of the base to control the operation of the vacuum disk; 
         [0013]    A vacuum disk shelf connector that is next to vacuum disk shelf stand; 
         [0014]    A controller locking unit that is right next to the inner side of the abovementioned vacuum control handler; and 
         [0015]    A controller sealer that is inside the base, which, together with the vacuum base control handler, will hold the controller locking unit. 
         [0016]    A mechanical device on one side of the upper part of multi-function juicer. This mechanical device includes: 
         [0017]    A gearbox at the center of the mechanical device; 
         [0018]    A rotating handler that is placed outside the gearbox; and 
         [0019]    A big gear and a small gear inside the gearbox. 
         [0020]    A juicer body that is placed on top of the vacuum mounting base. This body includes: 
         [0021]    A body part that is on the top of the base. 
         [0022]    A juice extraction device that is connected to the juicer body. This juice extraction device includes: 
         [0023]    A juice extraction device body that is at the center of the juice extraction device; 
         [0024]    A main screw bolt inside the device body; 
         [0025]    A main screw bolt skirt that is placed at the end of the main screw bolt; 
         [0026]    A small axle of the main screw bolt that is inside the main screw bolt; 
         [0027]    A main screen board that is at the outlet of the device body; 
         [0028]    A body nut that is attached to the abovementioned outlet of the device body; 
         [0029]    Two sealing rings that are closely attached to the body nut; 
         [0030]    An aux screw bolt that is inside the device body; 
         [0031]    A small bolt of the aux screw bolt that is placed inside the aux screw bolt; 
         [0032]    An aux screw bolt tail axle that is placed in the tail of the aux screw bolt; 
         [0033]    A juice extraction screen board that is right on the outside of the main screen board; 
         [0034]    A juice extraction device bottom cover that is placed on the bottom of the juice extraction device body; 
         [0035]    A bottom cover sealer that surrounds that rim of the juice extraction device bottom cover; 
         [0036]    A filter net that is placed on the center of the juice extraction device bottom cover; 
         [0037]    A wetness control unit that is connected to the outlet of the device body; and 
         [0038]    A juice extraction device nut that is tightened to the outlet of the device body. 
         [0039]    A meat grinding unit that can be exchanged with some of the components in the juice extraction device to serve meat grinding purpose. This meat grinding unit includes: 
         [0040]    A meat grinding screw bolt that can replace the main screw bolt to grind meat; 
         [0041]    A meat grinding screw bolt skirt that is placed at the tail of the meat grinding screw bolt; 
         [0042]    A meat grinding screen board that can replace the main screen board to grind meat; 
         [0043]    A meat grinding body nut that can replace the body nut to grind meat; and 
         [0044]    A pedal blade that can replace the juice extraction screen board to grind meat. 
         [0045]    The function of the invention can be changed by uninstalling some components in the juice extraction device and replacing them with meat grinding components. The user can conveniently grind meat or extract juice manually. Further, by rotating the vacuum disk control handler, the juicer can be mounted to the kitchen table, which is very easy. At the same time, when extracting juice, this invention can control the wetness of the pulp by adjusting the wetness control unit. There is no need to exact pulp/juice separation process. This provides a convenient way to use one juicer to extract juice from different fruits/vegetables. Thus it resolves the two abovementioned issues. 
     
     
       DESCRIPTION OF THE DRAWINGS 
         [0046]      FIG. 1  is the perspective view of the multi-function juicer invention; 
           [0047]      FIG. 2  is the disassembled view of the multi-function juicer invention; 
           [0048]      FIG. 3  is the perspective view of the controller locking unit that is shown in  FIG. 2 ; 
           [0049]      FIG. 4  is the perspective view of the vacuum disk control handler that is shown in  FIG. 2 ; 
           [0050]      FIG. 5  is the front view of the controller sealer that is shown in  FIG. 2 ; 
           [0051]      FIG. 6  is the side view of the controller sealer that is shown in  FIG. 5 ; 
           [0052]      FIG. 7  is the front view of the vacuum disk shelf connector that is shown in  FIG. 2 ; 
           [0053]      FIG. 8  is the side view of the vacuum disk shelf connector that is shown in  FIG. 7 ; 
           [0054]      FIG. 9  is the side view of the vacuum disk shelf that is shown in  FIG. 2 ; 
           [0055]      FIG. 10  is the top view of the vacuum disk shelf that is shown in  FIG. 9 ; 
           [0056]      FIG. 11  is the top view of the vacuum disk controller that is shown in  FIG. 2 ; 
           [0057]      FIG. 12  is the front view of the vacuum disk controller that is shown in  FIG. 11 ; 
           [0058]      FIG. 13  is the bottom view of the small gear that is shown in  FIG. 2 ; 
           [0059]      FIG. 14  is the bottom view of the large gear that is shown in  FIG. 2 ; 
           [0060]      FIG. 15  is the top view of the gearbox that is shown in  FIG. 2 ; 
           [0061]      FIG. 16  is the perspective view of the main screw bolt that is shown in  FIG. 2 ; 
           [0062]      FIG. 17  is the perspective view of the aux screw bolt that is shown in  FIG. 2 ; 
           [0063]      FIG. 18  is the side view of the aux screw bolt that is shown in  FIG. 17 ; 
           [0064]      FIG. 19  is the bottom view of the main screen board that is shown in  FIG. 2 ; 
           [0065]      FIG. 20  is the bottom view of the juice extraction screen board that is shown in  FIG. 2 ; 
           [0066]      FIG. 21  is the perspective view of the juice extraction body that is shown in  FIG. 2 ; 
           [0067]      FIG. 22  is the side view of the wetness control unit that is shown in  FIG. 2 ; 
           [0068]      FIG. 23  is the combined front view of the juice extraction body that is shown in  FIG. 21  and the wetness control unit that is shown in  FIG. 22  after they are installed together and placed in status  1 ; 
           [0069]      FIG. 24  is the combined front view of the juice extraction body that is shown in  FIG. 21  and the wetness control unit that is shown in  FIG. 22  after they are installed together and placed in status  2 ; 
           [0070]      FIG. 25  is the perspective view of the juice extraction device bottom cover that is shown in  FIG. 2 ; 
           [0071]      FIG. 26  is the top view of the juice extraction device bottom cover that is shown in  FIG. 25 ; 
           [0072]      FIG. 27  is the top view of the filter net that is shown in  FIG. 2 ; 
           [0073]      FIG. 28  is the perspective view of the pedal blade that is shown in  FIG. 2 ; 
           [0074]      FIG. 29  is the perspective view of the meat grinding screw bolt that is shown in  FIG. 2 ; 
           [0075]      FIG. 30  is the perspective view of the meat grinding screen board that is shown in  FIG. 2 ; 
       
    
    
     DETAILED DESCRIPTION 
       [0076]    Please refer to  FIG. 1  and  FIG. 2  first.  FIG. 1  is the perspective view of this multi-function juicer invention  1000 .  FIG. 2  is the dissembled view of this multi-function juicer invention  1000 . It includes: a vacuum mounting device  1  that is at the bottom of the multi-function juicer invention  1000 ; a mechanical device  2  that is on one side of the upper part of this multi-function juicer invention  1000 ; a juicer body  3  that is on top of the vacuum mounting device  1 ; a aux juice extraction device  4  that is connected to the juicer body  3 ; and a meat grinding unit  5  that can replace some components inside the juice extraction device  1  to serve the meat grinding purpose. The vacuum mounting device  1  includes: a vacuum disk  10  that is at the bottom of the vacuum mounting device  1 , whose shape is completely covered by the base unit  11 , which is made of flexible materials; a base unit  11  that covers the vacuum disk  10 , whose bottom shape matches to the shape of the vacuum disk  10 —its center is empty so that the other components of the vacuum mounting device  1  can operate inside; besides, on both sides of it there is a hole to hold vacuum disk controller  15  inside them, and the saddle shaped top of base unit  11  can match the bottom of the device body  30 ; a vacuum disk shelf  12  that is placed on top of the vacuum disk  10 , whose vacuum disk shelf base  120 &#39;s ( FIG. 9  and  FIG. 10 ) shape is similar to the shape of the inner side of vacuum disk  10  so that the two can stick together; at the same time, there is a vacuum disk shelf stand  121  at the center of vacuum disk shelf base  120  (as shown in  FIG. 9  and  FIG. 10 ). A bean shaped vacuum disk controller holding hole  122  locates at the center of vacuum disk shelf stand  121 , which allows the vacuum disk controller  15  to go through to control the up and down of the vacuum disk shelf  12 . To the outside of the vacuum disk controller holding hole  122  there are three vacuum disk shelf connection hole  123  (as shown in  FIG. 9  and  FIG. 10 ) to connect the shelf to vacuum disk shelf connector  17 . A vacuum disk controller  15  is placed inside the base unit  11 , whose L shape can be divided into two parts: the short part is the controller-handler connection  150 , which connects the controller with vacuum disk control handler  16 . The longer part is the controller stick  151 , which passes through the vacuum disk controller holding hole  122  to control the up and down of the vacuum disk shelf  12 . The center portion is slightly extended out. When the vacuum disk controller  15  is rotated, the vacuum disk shelf  12  will be raised. A controller locking unit  13  is placed in one side of the base  11  to lock the vacuum disk controller  15 . In the center of it there is a hole that is the axle basis when vacuum disk controller  15  rotates. A controller cover  14  is used to cover one side of base  11 . It is placed right on top of the controller locking unit  13 . A vacuum disk control handle  16  is placed on the other side of the base  11  to control the movement of vacuum disk  10 . It consists of two parts: handle  160  (as shown in  FIG. 4 ) and handle body  161  (as shown in  FIG. 4 ). In the center of handle  160  is the handle-controller holding hole  162  (as shown in  FIG. 4 ). There are three handle connection hole  163  in the inner surface of handle body  161  (as shown in  FIG. 4 ) to connect to controller sealer  18 . A vacuum disk shelf connector  17  is installed right next to vacuum disk shelf stand  121 . In the center of vacuum disk shelf connector  17  there is a bean shaped connector block  170  (as shown in  FIG. 7  and  FIG. 8 ), which matches the vacuum disk controller holding hole  122 . In the center of connector block  170  there is a block controller holding hole  171  (as shown in  FIG. 7  and  FIG. 8 ), which allows vacuum disk controller  15  to pass through. On the outer rim there are three connector connection hole  172  (as shown in  FIG. 7  and  FIG. 8 ) that can be used to connect controller sealer  18  and vacuum disk  12 . A controller locking unit  19  is right next to the inner surface of vacuum disk control handler  16 . It is placed right between vacuum disk control handler  16  and controller sealer  18 . A controller locking unit pole  191  (as shown in  FIG. 3 ) rises in the center of the controller locking unit body  190  (as shown in  FIG. 3 ). Pole  191  is a large column with a small column attached to it. In its center is the locking unit controller passing hole  192  (as shown in  FIG. 3 ). A controller sealer  18  is placed inside base  11 , which will support controller locking unit  19  together with vacuum disk handler  16 . In the center of the controller sealer body  180  (as shown in  FIG. 5  and  FIG. 6 ), there is a sealer controller passing hole  181  (as shown in  FIG. 5  and  FIG. 6 ). Its shape is identical to the controller locking unit pole  191 . There are three sealer connection hole  182  on the outside (as shown in  FIG. 5  and  FIG. 6 ), which are used to lock in controller sealer  18  and vacuum disk handler  16 . 
         [0077]    The mechanical unit  2  includes a gearbox that is in the center of the mechanical device. On the center of its surface there are a small gear holding pole  210  (as shown in  FIG. 15 ) and large gear holding pole  211  (as shown in  FIG. 15 ). A rotating handler  21  is outside gearbox  21 . There are also a small gear  22  and a large gear  23 , which is placed on the small gear holding pole  210  and large gear holding pole  211 . The center axle of small gear  220  (as shown in  FIG. 13 ) is very long so that it can be connected to the rotating handler  20 . The gear teeth  221  (as shown in  FIG. 13 ) bite into the teeth of large gear  230  (as shown in  FIG. 14 ) to drive the motion. In the center of large gear  23  there is a gear shaped hole large gear center hole  231  (as shown in  FIG. 14 ). 
         [0078]    The body unit  3  includes: a body unit  30  that is placed on top of base  11 , whose bottom&#39;s shape matches the saddle shaped top of base  11 ; and, a pedal blade  50  that can replace juice extraction screen board  41  to grind meat. 
         [0079]    The juice extraction device  4  includes: a horizontal cone shaped juice extraction body unit  40  in the center of juice extraction device  4 . To the right of the device body  40  (the bottom of the cone) is the inlet of body unit  400  (as shown in  FIG. 21 ). To the left (the tip of the cone) are two pulp outlets  401  (as shown in  FIG. 21 ). At the bottom of the body unit  40  there is a juice outlet  402  (as shown in  FIG. 21 ). A main screw bolt  51 A is placed inside the body unit  30 , with a small bolt gear  510 A at the tail (as shown in  FIG. 16 ), which can be placed completely into big gear center hold  231 . On the head of the main screw bolt  51 A is a screw thread  512 A (as shown in  FIG. 16 ). It comes with a main screw bolt hole  511 A on the front end (as shown in  FIG. 16 ). A main screw bolt skirt  55 A is placed at the end of the main screw bolt  51 A to seal the space between main screw bolt  51 A and big gear  23 , which ensures a smooth rotation. A small axle of main screw bolt  52  is placed inside main screw bolt hole  511 A. It consists of two parts. The larger part is placed in the main screw bolt hole  511 A. The smaller part extends outside main screw bolt  51 A. A main screen board  53 A is installed on the outlet of the body unit  30 . The rims of every hole  530 A (as shown in  FIG. 19 ) on it are sharp blades. The shape of the body  531 A (as shown in  FIG. 19 ) matches the shape of the outlet of body unit  30 . A body nut  54 A is attached to the outlet of body unit  30 , and two water proof sealing rings  56  are placed adjacent to it. An aux screw bolt  42  is placed in the juice extraction device body  40 . It is a cone shape with screw thread  420  (as shown in  FIG. 17  and  FIG. 18 ) on it. At the head there is a aux screw bolt axle hole  421  (as shown in  FIG. 17  and  FIG. 18 ), and the rear end there is a aux screw bolt tail axle hole  422  (as shown in  FIG. 17  and  FIG. 18 ). An aux screw bolt small axle  44  is placed in the aux screw bolt axle hole  421 . It consists of two parts. The larger one hides inside the aux screw bolt axle hole  421 . The smaller one extends outside aux screw bolt  42 . An aux screw bolt tail axle  43  is placed inside the aux screw bolt tail axle hole  422 . It is hollow, which will allow the extended portion of main screw bolt small axle  32  to be inserted into it. Thus the main screw bolt  51 A can drive the aux screw bolt  42  to rotate. A juice extraction screen board  41  is placed outside main screen board  53 A. The edges of every hole  410  on it (as shown in  FIG. 20 ) are sharp blades. A device bottom cover  45  is installed beneath the device unit  40 . Its body  450  (as shown in  FIG. 25  and  FIG. 26 ) is a twisted platform, which matches the shape of the outlet  402  of the juice extraction device body. At the center of the bottom cover  45  is a round bottom cover outlet  451  (as shown in  FIG. 25  and  FIG. 26 ). Right beneath this bottom cover outlet  451  there is a juice outlet pipe  452  (as shown in  FIG. 25  and  FIG. 26 ) extending from the bottom cover downward. A bottom cover sealer  47  surrounds this juice extraction bottom cover  45 . Its shape is such that it covers the full edge of this juice extraction bottom cover  45  to avoid the leakage of juice between the juice extraction unit body  40  and the juice extraction device bottom cover  45 . A filter net  48  is placed at the center of the juice extraction bottom cover  45 . Its body  480 &#39;s shape (as shown in  FIG. 27 ) matches the center of the juice extraction bottom cover  45 , which allows the filter net  480  to cover the bottom cover outlet  451 . Inside the filter net  480  are many juice filtering holes  481  (as shown in  FIG. 27 ). A wetness control unit  46  is connected to the pulp outlet  401  of the juice extraction device. The body  460  (as shown in  FIG. 22 ) is a cylinder. There are two pulp outlets  461  (as shown in  FIG. 22 ) on both sides of the side that is facing juice extraction device body  40 . A juice extraction device nut  49  attaches to the outlet of the extraction device unit  40 , which connects the wetness control unit  46  to the extraction device body  40 . 
         [0080]    Finally, the meat grinding unit  5  includes: a meat grinding screw bolt  51 B that can replace the main screw bolt  51 A. It has a small screw bolt gear  510 B (as shown in  FIG. 29 ) in the tail. The whole small screw bolt gear  510 B can be placed in the large gear center hole  231  (as shown in  FIG. 29 ). The head of the meat grinding screw bolt  51 B is a cylinder with screw thread  512 B (as shown in  FIG. 29 ). A meat grinding screw bolt skirt  55 B is placed at the end of the meat grinding screw bolt  51 B. It seals the space between the tail of meat grinding screw bolt  51 B and the large gear  23 , and makes the rotation smoother. A meat grinding screen board  53 B can replace the main screen board  53 A. All edges of the holes  530 B (as shown in  FIG. 30 ) are sharp blades. Its shape  531 B (as shown in  FIG. 30 ) matches the outlet of device body  30 . A body meat grinding nut  54 B can replace the body nut  54 A. And there is a pedal blade  50  that can replace the juice extraction screen board  41  to serve the meat grinding purpose. 
         [0081]    Next, please refer to  FIG. 3  to  FIG. 12 . These Figures illustrate the different components of this invention&#39;s vacuum mounting device  1  from different angles. It includes:  FIG. 3 , the perspective view of the controller locking unit  19 ;  FIG. 4 , the perspective view of the vacuum disk control handler  16 ;  FIG. 5  and  FIG. 6 , the front view and the side view of the controller sealer  18 ;  FIG. 7  and  FIG. 8 , the front view and the side view of the vacuum disk shelf connector  17 ;  FIG. 9  and  FIG. 10 , the side view and the top view of the vacuum disk shelf  12 ; and  FIG. 11  and  FIG. 12 , the top view and the front view of the vacuum disk controller  15 . These Figures are a good supplement of the abovementioned installation process. They can also help to illustrate the operation of vacuum mounting device  1 . Before the operation of this juicer  1000 , pull down the handler  160 , the vacuum disk controller  15  that is inside the handle controller holding hole  162  will be pulled down, too. Thus the handle controller connector  150  will move from the vertical status to horizontal status. The controller stick  151  will rotate in the connector controller holding hole  171 . Then the bulging portion in the center will point vertically instead of horizontally. Since the connector control holding hole  171  is a ellipse, the vacuum disk shelf connector  17  will be raised, thus pulling vacuum disk shelf  12  and base vacuum disk  10  up. At the same time, the rim of vacuum disk  10  stays on the kitchen table, thus creates a vacuum place between the kitchen table and vacuum disk  10 . This multi-function juicer will then be mounted to the table. 
         [0082]    Next please refer to  FIG. 13  to  FIG. 15 . They show the different components of the mechanical unit  2  of this invention from different angles. They include:  FIG. 13 , the bottom view of the small gear  22 ;  FIG. 14 , the bottom view of the large gear  23 ; and  FIG. 15 , the top view of the gearbox  21 . These Figures are a good supplement of the abovementioned installation process. They can also help to illustrate the operation of mechanical unit  2 . During the operation of this juicer  1000 , the user manually rotates the rotating handle  20 , which drives the small gear  22  to rotate by pulling the small gear axle  220  that is connected to the rotating handler  20 . Since the teeth of small gear  221  bite into the teeth  230  of large gear, the large gear  23  is driven to rotate, too. 
         [0083]    Please then refer to  FIG. 16  to  FIG. 27 . They show the different components of the juice extraction device  4  of this invention from different angles. They include:  FIG. 16 , the perspective view of the main screw bolt  51 A;  FIG. 17  and  FIG. 18 , the perspective view and the side view of the aux screw bolt  42 ;  FIG. 19 , the bottom view of the main screen board  53 A;  FIG. 20 , the bottom view of the juice extraction screen board  41 ;  FIG. 21 , the perspective view of the juice extraction body  40 ;  FIG. 22 , the side view of the wetness control unit  46 ;  FIG. 23  and  FIG. 24 , the combined front view of the juice extraction body that is shown in  FIG. 21  and the wetness control unit that is shown in  FIG. 22  after they are installed together and placed in status  1  and status  2 ;  FIG. 25  and  FIG. 26 , the perspective view and the top view of the body  450  of the juice extraction device bottom cover  45 ; and  FIG. 27 , the top view of the filter net. These Figures are a good supplement of the abovementioned installation process. They can also help to illustrate the operation of the juice extraction device  4 . As explained above, when the large gear  23  rotates, since the screw bolt gear  510 A is placed into the large gear center hole  231 , the motion is passed to the main screw bolt  51 A, thus drive the main screw bolt  51 A to rotate. The screw thread  512 A will generate a forward motion when rotating together with the main screw bolt  51 A. Thus the food inside the device body  30  will be pushed forward towards the outlet. When the food is pushed through the holes  530 A of main screen board  53 A, it is smashed by the sharp blades and thus reduced the volume. Besides, since the main screw bolt small axle  32  passes through both the central hole  411  of the juice extraction screen board  41  and the aux screw bolt tail axle  43 , and the central hole  411  and the aux screw bolt tail axle  43  has the same profile shapes, the juice extraction screen board  41  and aux screw bolt  42  are also be driven to rotate. Food will be further smashed by the sharp edges of the holes  410  on the juice extraction screen board  41 . Then it will enter the juice extraction device body  40  for further processing. When the pretreated food enters the juice extraction device body  40  through the juice extraction device body  40  entrance  400 , the screw thread  420  on the aux screw bolt  42  will rotate together with the main screw bolt  51 A. This, too, will generate a forward motion. Thus the food in the juice extraction device body  40  gets pressed in a small space. The cone shape of juice extraction device body  40  will also make the pressure on the food inside larger and larger, thus separates juice from pulp. Pulp will be pushed out from the juice extraction device body  40  through the juice extraction device pulp outlet  401  by the forward moving aux screw bolt screw thread  420 . While juice drips down to leave the juice extraction device body  40  through the juice extraction device juice outlet  402  by gravity. After the pulp leaves the juice extraction device body  40 , they will go through the wetness control unit pulp outlet  461  of the wetness control unit  46 , to be discharged from the multi-function juicer  1000 . As shown in  FIG. 23 , when the juice extraction device body  40  and the wetness control unit are connected in status  1 , the juice extraction device pulp outlet  401  is completely overlapped with the wetness control unit pulp outlet  461 . The actual pulp outlet  462  is of the same size as the two outlets. A larger actual pulp outlet  462  makes the pulp to be released faster, shortens the time that food stays in the juice extraction device body  40  and device body  30 . That makes the separation of pulp and juice less complete. Thus the pulp is wetter, and less juice is produced. On the other hand, as shown in  FIG. 24 , when the juice extraction device body  40  and the wetness control unit are connected in status  2 , the juice extraction device pulp outlet  401  is not completely overlapped with the wetness control unit pulp outlet  461 . The actual pulp outlet  462  is of a smaller size than the two outlets. A smaller actual pulp outlet  462  makes the pulp to be released slower, increases the time that food stays in the juice extraction device body  40  and device body  30 . That makes the separation of pulp and juice more complete. Thus the pulp is dryer, and more juice is produced. From the illustration above we can see that, if the user wants to produce juice from juicier fruits, he must adjust the wetness control unit  46  to status  1 , to make the pulp to discharge easily, and get juice. On the contrary, if the user wants to get juice from less juicier fruits, he needs to adjust the wetness control unit  46  to status  2 , thus increases the time that food stays in the juice extraction device body  40  and device body  30 . That will help to produce more juice from the fruit. When the juice trickles down the juice extraction device juice outlet  402  to leave the juice extraction device body  40 , it will pass the juice filter  481  on the filter net  480  to remove the small pulps and particles. It will then be discharged out of the multi-function juicer  1000  through the bottom cover outlet  451  via the juice outlet pipe  452 . 
         [0084]    Finally,  FIG. 28  to  FIG. 30  show the different components of the meat grinding device  5  of this invention from different angles. They include:  FIG. 28 , the perspective view of the pedal blade  50 ;  FIG. 29 , the perspective view of the meat grinding screw bolt  51 B; and  FIG. 30 , the bottom view of the meat grinding screen board  53 B. These components can switch the function of the multi-function juicer  1000  from juice extraction to meat grinding. First, remove the whole juice extraction device  4 . Then, place the whole meat grinding device  5  into the device body  30 . Replace the main screw bolt  51 A with meat grinding screw bolt  51 B. Replace the main screen board  53 A with meat grinding screen board  53 B. Then place pedal blade  50  between the meat grinding screw bolt  51 B and the meat grinding screen board  53 B. Then replace body nut  54 A with meat grinding body nut  54 B. Then the juice extraction device  1000  will be converted into a meat grinder, which is very convenient. 
         [0085]    From the abovementioned structure we can see that, based on the creative design of the invention, the multi-function juicer is very easy to operate. First, rotate vacuum disk control handler  16  to mount the juicer  1000  on the kitchen table. Then, repetitively rotate rotating handler  20  to drive the screw bolt  51 A and  42  and pedal blade  50  or juice extraction screen board  41  to rotate. Thus the meat or fruit in the device body unit  30  will be smashed into small pieces by the pedal blade  50  or juice extraction screen board  41  to be further processed into ground meat or fruit juice. In addition to changing the configuration to serve different purposes, multi-function juicer  1000  can adjust the wetness control unit  46  to control the retention time of food in the juice extraction device body  40  and device body  30 . Thus it creates a higher performance for juice production for different fruits. It does not need an extra process to separate juice from pulp, or to adjust the wetness of the pulp, which is very convenient.