CN106859338B - A household multifunctional soymilk maker - Google Patents

Abstract

The invention discloses a household multifunctional soybean milk machine, which comprises a juice containing cup, an annular filter cup and a grinding cup, wherein the annular filter cup is arranged at the upper end of the juice containing cup; the grinding cup comprises a cup body and a motor installation cavity formed at the lower end of the cup body, and the lower end of the motor installation cavity is connected with a heater; a motor is arranged in the motor installation cavity, an annular electromagnet is fixedly arranged at the bottom in the cup body above the motor, and an output shaft of the motor penetrates through a central hole of the electromagnet and is in sealed rotary connection with the central hole; a lower grinding disc is sleeved on the upper part of the electromagnet, an upper grinding disc a used for grinding the soybean milk in cooperation with the lower grinding disc is detachably arranged at the upper end of the lower grinding disc in the grinding cup, and a permanent magnet is arranged in the upper grinding disc a; or an upper grinding disc b is detachably arranged for grinding the juice by matching with the lower grinding disc. The invention simulates and improves the soybean milk made by the traditional stone mill, has good mouthfeel, and can be used for squeezing fruit juice.

Description

A household multifunctional soymilk maker

technical field

The invention belongs to the field of household appliances, in particular to a multifunctional soybean milk machine.

Background technique

Existing domestic soymilk machines generally use high-speed rotating blades to break the beans into powder, and at the same time, during the rotation of the blades, the soy flour is dissolved into water to form soymilk. Soymilk is heated, however, the taste of soymilk made by this type of soymilk machine is still not as good as that made with traditional stone mills.

On the other hand, because the traditional stone mill used for making soybean milk is heavy and bulky, it is not suitable for ordinary household use.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is: aiming at the deficiencies in the prior art, it provides a soymilk machine with a small size, which imitates the grinding of soymilk by a stone mill, and can be used for extracting fruit juice.

In order to achieve the purpose of the present invention, the following technical solutions are adopted: a household multifunctional soymilk maker, comprising a juice-holding cup, an annular filter cup installed on the upper end of the juice-holding cup, and a grinding cup installed on the upper end of the filter cup;

The grinding cup includes a circular groove-shaped cup body and a circular groove-shaped motor mounting cavity formed at the middle position of the lower end of the cup body, and the lower end of the motor mounting cavity passes through the filter cup and extends to the inner bottom of the juice holding cup, The lower end of the motor installation cavity is connected with a heater for heating the soybean milk in the juice-containing cup; the bottom of the cup body is formed with a drainage through hole leading to the filter cup;

A motor with an output shaft facing upwards is fixedly installed in the motor installation cavity, a ring-shaped electromagnet is fixedly installed at the bottom of the cup body above the motor, and the output shaft of the motor passes through the middle hole of the electromagnet. and the output shaft and the middle hole of the electromagnet are rotatably connected by a sealed bearing;

The outer circumference of the electromagnet is a polygonal structure, the upper part of the electromagnet is sleeved with a lower grinding disc, the outer circumference of the lower grinding disc is a cylindrical wall surface, and the lower end of the lower grinding disc is formed with a polygonal positioning groove that is matched and inserted with the electromagnet;

In the grinding cup, located at the upper end of the lower grinding plate, there is detachably an upper grinding plate a for grinding soybean milk in cooperation with the lower grinding plate; a transmission hole is formed in the middle of the upper grinding plate a, and the output shaft corresponds to the upper grinding plate a. The position of the upper grinding plate a is formed with a positioning part of the upper grinding plate a that is matched and inserted with the transmission hole;

The upper end of the upper grinding plate a is formed with an annular notch on the outer periphery of the transmission hole, the bottom of the notch is formed with a bean inlet hole that penetrates the upper grinding plate a, and an annular groove is formed on the outer circumference of the upper grinding plate a. A permanent magnet that is magnetically attracted to the electromagnet is fixedly installed in the annular groove;

The upper end of the upper grinding disc a is connected with a feeding cup, and a positioning boss is formed in the middle of the lower end of the feeding cup, which is matched with the notch on the upper grinding disc a, and an arc is formed in the feeding cup. In the feeding cup, one side of the separator is a water storage tank, and the other side is a bean storage tank. material mouth;

A water flow regulating tank in the shape of a circular tank body is formed in the feeding cup at a position between the water storage tank and the bean storage tank. The connected water outlet, the water inlet is in the shape of a longitudinally arranged rectangle, the water outlet is in the shape of a longitudinally arranged strip slit, and the area of the water inlet is 5-10 times the area of the water outlet; the water flow adjustment groove A regulating piston is slidably installed inside, and the regulating piston includes a cylindrical rubber piston body and a piston rod coaxially connected to the upper end of the piston body;

In the grinding cup, there is a detachable upper grinding plate b on the upper end of the lower grinding plate, which is used for grinding juice in cooperation with the lower grinding plate. The upper end surface of the upper grinding plate b is located on the outer periphery of the fruit feeding port and is formed with driven teeth, and the upper end surface of the upper grinding plate b is located on the outer circumference of the driven teeth. An annular groove is formed on the outer periphery of the convex ring, and a permanent magnet that attracts with the electromagnet through magnetic force is fixedly installed in the annular groove;

The lower end surface of the upper grinding plate b is located on the outer periphery of the fruit feeding port, and is formed with a conical surface with a high middle and a low outer periphery, and the conical surface is formed with arc-shaped ribs distributed in a circumferential array;

The output shaft of the motor is located above the positioning part of the upper grinding disc a is a screw part, and a pressing mechanism is connected to the screw part through a thread; the pressing mechanism includes a rotating rod body and is integrally connected to the outside of the rotating rod. The lower end of the rotating rod body is formed with a connecting screw hole that is threadedly connected to the screw part; the outer circumference of the lower end of the rotating rod body is connected with an annular linkage ring through 2-3 connecting blades, The lower end surface of the linkage ring is formed with driving teeth that cooperate with the driven teeth on the upper grinding disc b for transmission;

When the upper grinding disc b is set on the upper end of the lower grinding disc, a feeding chute is detachably connected to the upper end of the grinding cup.

Preferably: the output shaft of the motor rotates clockwise, the screw portion and the connecting screw hole are connected by a left-hand thread, and the driving teeth and the driven teeth are one-way teeth with clockwise one-way transmission; The pressing vane is on a left-handed helix.

Preferably, the lower end surface of the connecting blade faces obliquely downward in the clockwise direction, and the inclination angle of the connecting blade is smaller than that of the pressing-down blade.

Preferably: the upper end of the rotating rod body is rotatably connected with a rotating rod through a pin shaft, and a side accommodating groove for accommodating the unscrewing rod is formed on the upper side of the rotating rod body; during the juice extraction process, the unscrewing rod is rotated to In the side tank, unfold the screw-out rod after use to unscrew the pressing mechanism from the output shaft of the motor, and the motor rotates in the reverse direction at a speed of 0.2-1 revolutions per second when the pressing mechanism is unscrewed.

Preferably, the included angle between the tapered surface and the horizontal direction is 2-5 degrees, and the outer ends of the arc-shaped ribs are bent in a counterclockwise direction.

Preferably: the feeding chute includes a cylindrical outer chute wall and an inner chute wall, and an upper connecting wall integrally formed between the outer chute wall and the upper end of the inner chute wall; the inner side of the inner chute wall is wide at the top and narrow at the bottom The inner circumference of the upper end of the upper connecting wall is a conical surface with a high outer circumference and a low middle;

An inner plug-in wall is formed at the lower end of the inner groove wall, and the inner plug-in wall is matched and inserted with the inner circumference of the socket convex ring; A clamping head, the upper part of the inner wall of the cup of the grinding cup is formed with an L-shaped bayonet which is engaged with the clamping head.

Preferably, a cup handle is formed on the side wall of the cup body, a power interface is installed on the side wall of the cup body under the handle, and a control panel is installed at a position away from the side wall of the cup body and the handle. A control circuit board is installed in the panel, and the motor, the heater and the power interface are respectively electrically connected to the control circuit board; the control panel is also installed with a control button a for controlling the clockwise rotation of the motor to control the heater The working control button b, and the control button c used to control the counterclockwise rotation of the motor to remove the pressing mechanism.

As a preference: the diameters of the lower grinding disc, the upper grinding disc a, and the upper grinding disc b are 10-16 cm.

Compared with the prior art, the beneficial effect of the present invention is: the present invention increases the pressure between the upper grinding disc a and the lower grinding disc by arranging an electromagnet and a permanent magnet between the upper grinding disc a and the lower grinding disc, so that the upper grinding disc a and the lower grinding disc are The volume of the lower grinding plate does not need to be too large to generate enough pressure to grind beans.

In order to enrich the functions of the present invention, the upper grinding disc b is added to cooperate with the lower grinding disc to realize the juice pressing function. Since the pulp is generally much larger than the soybean used for pressing soy milk, it is not suitable to use the upper grinding disc a to squeeze the juice, so the lower end of the upper grinding disc b is There is a conical surface, and a space with a wide middle and a narrow outer circumference is formed between the conical surface and the lower grinding plate. When the pulp passes between the upper grinding plate b and the lower grinding plate, it moves from the inside to the outside, and the pressure gradually increases, and the pulp fiber is fully absorbed. Squeeze is beneficial for the juice to be fully squeezed out; the arc-shaped rib is used to push the pulp to rotate relative to the lower grinding disc. The rotation also produces a squeezing effect, which is conducive to the extraction of the juice.

Description of drawings

Figure 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic cross-sectional structure diagram of the present invention.

Figure 3 is a schematic diagram of the exploded structure of the present invention.

Figure 4 is a schematic diagram of the structure of the filter bowl.

Figure 5 is a schematic view of the structure of the grinding cup.

Figure 6 is a schematic diagram of the structure of the upper grinding disc a and the feeding cup part.

7 and 8 are schematic views of the structure of the feed cup.

FIG. 9 is a schematic cross-sectional structure diagram of the present invention as a juice extractor.

Figure 10 is a schematic diagram of the exploded structure of the present invention as a juicer.

Figure 11 is a schematic view of the structure of the feed tank.

Fig. 12 is a schematic view of the structure of the pressing mechanism.

FIG. 13 is a schematic view of the structure of the upper grinding disc b.

FIG. 14 is a schematic cross-sectional view of the upper grinding disc b.

Fig. 15 is a structural state diagram when the pressing mechanism is disassembled.

16 is a schematic structural diagram of the filter cup and the juice-holding cup in Example 2.

Figures 17 and 18 are schematic views of the structure of the filter bowl in Example 2.

1. Juice cup;

2. Filter cup; 21. Inner cup wall; 22. Filter screen; 23. Outer cup wall; 24. Support ring;

2a, the first filter tank; 2b, the second filter tank; 25, the isolation plate; 26, the second filter screen; 27, the juice outlet;

3, grinding cup; 31, cup body; 311, bayonet; 32, control panel; 33, cup handle; 34, power interface; 35, motor installation cavity;

4. Feeding cup; 41. Separator; 42. Water flow regulating tank; 421. Water inlet; 422, Water outlet; 43. Feeding inlet; 44. Positioning boss; 40. Regulating piston;

50, electromagnet; 51, lower grinding plate; 511, positioning groove; 52, upper grinding plate a; 521, permanent magnet; 522, transmission hole; 523, bean inlet hole; 524, notch; 53, upper grinding plate b; 531, Socket convex ring; 532, driven tooth; 533, tapered surface; 534, arc-shaped rib;

6. Heater;

7. Motor; 71. Output shaft; 711. Positioning part of upper grinding disc a; 712. Screw part;

8. Feeding tank; 81. Outer tank wall; 811, Outer connecting wall; 82, Inner tank wall; 821, Inner inserting wall; 83, Upper connecting wall;

9. Pressing mechanism; 90. Revolving rod; 91. Rotating rod body; 92. Pressing blade; 93. Connecting blade; 94. Linking ring; 941. Driving tooth; 95. Connecting screw hole.

Detailed ways

Example 1

As shown in FIGS. 1 to 15 , this embodiment is a household multifunctional soymilk maker, which includes a juice holding cup 1 , an annular filter cup 2 installed on the upper end of the juice holding cup, and a grinding cup installed on the upper end of the filter cup 3.

The grinding cup includes a groove-shaped cup body 31 and a groove-shaped motor mounting cavity 35 formed in the middle of the lower end of the cup body. The lower end of the motor mounting cavity passes through the filter cup and extends into the juice container. At the bottom, the lower end of the motor installation cavity is connected with a heater 6 for heating the soybean milk in the juice-holding cup; the bottom of the cup body is formed with a drainage through hole leading to the filter cup.

A motor 7 with the output shaft facing upwards is fixedly installed in the motor installation cavity, and a ring-shaped electromagnet 50 is fixedly installed at the bottom of the cup body above the motor. The hole passes through, and the output shaft and the middle hole of the electromagnet are rotatably connected through a sealed bearing.

The outer circumference of the electromagnet is a polygonal structure, the upper part of the electromagnet is sleeved with a lower grinding disc 51, the outer circumference of the lower grinding disc is a cylindrical wall surface, and the lower end of the lower grinding disc is formed with a polygonal positioning groove 511 which is matched and inserted with the electromagnet. .

The grinding cup is detachably provided with an upper grinding disc a52 at the upper end of the lower grinding disc for grinding soybean milk in cooperation with the lower grinding disc; a transmission hole 522 is formed in the middle of the upper grinding disc a, and the output shaft corresponds to the upper grinding disc The position of a is formed with a positioning portion 711 of the upper grinding wheel a which is matched and inserted with the transmission hole. The positioning portion of the upper grinding wheel a is a polygon or a cylindrical shape with a flat side as shown in FIG. 3 .

The upper end of the upper grinding disc a is formed with an annular notch 524 on the outer periphery of the transmission hole, the bottom of the notch is formed with a bean inlet hole 523 that penetrates the upper grinding disc a, and the upper grinding disc a is formed on the outer periphery of the notch with an annular A permanent magnet 521 that is magnetically attracted to the electromagnet is fixedly installed in the annular groove. When the motor drives the upper grinding disc a to rotate, a magnetic field suction force is generated between the electromagnet and the permanent magnet, so that the pressure between the upper grinding disc a and the lower grinding disc increases, and the magnetic field force replaces part of the gravity of the upper grinding disc of the large-volume stone mill. In this way, the volume of the upper grinding disc and the lower grinding disc a can be made smaller, which is suitable for ordinary household use.

A feeding cup 4 is connected to the upper end of the upper grinding disc a, and a positioning boss 44 is formed in the middle of the lower end of the feeding cup, which is matched with the notch on the upper grinding disc a. An arc-shaped partition 41, one side of the feed cup is a water storage tank, the other side is a bean storage tank, and the bottom of the feeding cup is located within the range of the bean storage tank and corresponds to the bean inlet hole. A feeding port 43 is formed.

A water flow regulating tank 42 in the shape of a circular tank body is formed in the feeding cup at the position between the water storage tank and the bean storage tank, and a water inlet 421 communicating with the water storage tank is formed on the side of the bottom of the water flow regulating tank. The water outlet 422 connected to the bean trough, the water inlet is in the shape of a longitudinally arranged rectangle, the water outlet is in the shape of a longitudinally arranged strip slit, and the area of the water inlet is 5-10 times the area of the water outlet; the A regulating piston 40 is slidably installed in the water flow regulating groove. The regulating piston includes a cylindrical rubber piston body and a piston rod coaxially connected to the upper end of the piston body.

By moving up and down to adjust the position of the piston, the size of the water outlet can be adjusted, thereby adjusting the water outlet speed of the water storage tank, thereby adjusting the concentration of the final processed soybean milk.

In the grinding cup, an upper grinding disc b53 is detachably provided at the upper end of the lower grinding disc for grinding juice in cooperation with the lower grinding disc; The upper end surface of the upper grinding plate b is formed with driven teeth 532 on the outer periphery of the fruit feeding port. The upper end surface of the upper grinding plate b is located on the outer circumference of the driven teeth and is formed with an upwardly protruding socket ring 531. The upper end of the upper grinding plate b An annular groove is formed on the outer periphery of the socket convex ring, and a permanent magnet 521 that is magnetically attracted to the electromagnet is fixedly installed in the annular groove.

The lower grinding disc, the upper grinding disc a and the upper grinding disc b are respectively made of natural bluestone or granite.

The lower end surface of the upper grinding plate b is located on the outer periphery of the fruit feeding port, and is formed with a conical surface 533 with a high middle and a low outer periphery. The conical surface is formed with arc-shaped ribs 534 distributed in a circular array.

The output shaft of the motor is located above the positioning part of the upper grinding disc a is a screw part 712, and a pressing mechanism 9 is connected to the screw part through a thread; the pressing mechanism includes a rotating rod body 91, and is integrally connected to the A plurality of pressing vanes 92 on the periphery of the rotating rod body; the lower end of the rotating rod body is formed with a connecting screw hole 95 threadedly connected with the screw part; the outer circumference of the lower end of the rotating rod body is connected with a The annular linkage ring 94, the lower end surface of the linkage ring is formed with driving teeth 941 that cooperate with the driven teeth on the upper grinding disc b for transmission.

Due to the large volume of the pulp, or in order to cut the pulp, the pulp is cut into small pieces by the lower pressing blade of the pressing mechanism, and at the same time is pushed downward, so that the pulp can smoothly enter between the upper grinding disc b and the lower grinding disc for pressing.

When the upper grinding disc b is set on the upper end of the lower grinding disc, a feeding slot 8 is detachably connected to the upper end of the grinding cup.

The feeding trough includes a cylindrical outer trough wall 81 and an inner trough wall 82, and an upper connecting wall 83 integrally formed between the upper ends of the outer trough wall and the inner trough wall; the inner side of the inner trough wall is wide at the top and narrow at the bottom. The inner circumference of the upper end of the upper connecting wall is a conical surface with a high outer circumference and a low middle.

An inner inserting wall 821 is formed at the lower end of the inner groove wall, and the inner inserting wall cooperates with the inner circumference of the socket convex ring; the inner circumference of the lower end of the outer groove wall is formed with an outer connecting wall 811, and the outer circumference of the outer connecting wall A clamping head is formed, and an L-shaped bayonet 311 is formed on the upper part of the inner wall of the grinding cup to cooperate with the clamping head.

A cup handle 33 is formed on the side wall of the cup body, a power interface 34 is installed on the side wall of the cup body under the handle, and a control panel 32 is installed on the side wall of the cup body away from the handle. A control circuit board is installed in the panel, and the motor, the heater and the power interface are respectively electrically connected to the control circuit board; the control panel is also installed with a control button a for controlling the clockwise rotation of the motor to control the heater The working control button b, and the control button c used to control the counterclockwise rotation of the motor to remove the pressing mechanism.

When grinding soy milk, the motor speed is 1-3 rpm; when juicing, the motor speed is 2-4 rpm.

The filter cup has a circular tube-shaped inner cup wall 21, a circular tube-shaped outer cup wall 23, and a filter screen 22 connected between the inner cup wall and the lower end of the outer cup wall. A support ring is formed on the outer periphery of the upper end, the support ring is abutted on the outer periphery of the upper end of the juice cup, and the lower end of the grinding cup is inserted into the inner periphery of the support ring.

The output shaft of the motor rotates clockwise, the screw portion and the connecting screw hole are connected with left-hand threads, and the driving teeth and the driven teeth are one-way teeth with clockwise one-way transmission; on a left-handed spiral.

When the motor rotates, the output shaft drives the pressing component to rotate, and the pressing component drives the upper grinding disc b to rotate through the driving teeth on the linkage ring. Then, the upper grinding disc b and the lower grinding disc are further rolled to make the juice fully squeezed out.

The lower end surface of the connecting blade faces obliquely downward in the clockwise direction, and the inclination angle of the connecting blade is smaller than that of the pressing-down blade. The angle of the connecting blade is small, and the downward pressure generated under the same rotation speed is greater than that of the downward pressing blade, which is conducive to the extrusion of fruit pieces between the upper grinding disc b and the lower grinding disc.

The upper end of the rotating rod body is rotatably connected with an unscrewing rod 90 through a pin shaft, and a side accommodating groove for accommodating the unscrewing rod is formed on the upper side of the rotating rod body; during the juice extraction process, the unscrewing rod is rotated to the side container In the tank, unfold the unscrewing rod after use to unscrew the pressing mechanism from the output shaft of the motor, and the motor reversely rotates at a speed of 0.2-1 revolutions per second when the pressing mechanism is unscrewed.

After use, in order to dispose of the pulp residue and clean the grinding cup, the pressing mechanism needs to be removed, so as to further remove the upper grinding disc b and the lower grinding disc, and if the output shaft of the motor is in a free state, the pressing mechanism is difficult to remove. Therefore, the motor rotates in the reverse direction at a low speed, which is opposite to the disassembly rotation direction of the pressing mechanism, so as to facilitate the removal of the pressing mechanism.

The angle between the tapered surface and the horizontal direction is 2-5 degrees, and the outer ends of the arc-shaped ribs are bent in a counterclockwise direction.

A space with a wide middle and a narrow outer circumference is formed between the inner circumference of the lower end of the upper grinding disc b and the lower grinding disc. When the pulp passes between the upper grinding disc b and the lower grinding disc, it moves from the inside to the outside. At the same time, the pressure gradually increases, and the pulp fibers are fully squeezed. It is beneficial for the juice to be fully squeezed out; the arc-shaped rib is used to push the pulp to rotate relative to the lower grinding disc. The rotation also produces a squeezing effect, which is conducive to the extraction of the juice.

Example 2

This embodiment makes the following improvements on the basis of Embodiment 1: when the present invention is used as a juice press, the controller controls the electromagnet to turn on the reverse current for 0.2-0.5s every 3-5s so that the electromagnet and the permanent magnet are connected to each other. Mutual repulsion is generated, so that the pressure between the upper grinding disc b and the lower grinding disc is reduced instantaneously, and the positive current is passed through at other times to attract it to the permanent magnet.

In this way, during the juicing process, the pulp can pass between the upper grinding disc b and the lower grinding disc relatively quickly, that is, when the electromagnet and the permanent magnet repel each other in the opposite direction, the pulp located in the lower part of the feeding trough is quickly pressed into the upper grinding disc. The space between the grinding disc b and the lower grinding disc, in this way, for the less firm fruit, the time required for juicing is significantly reduced.

Example 3

16 to 18, the difference between this embodiment and Embodiment 1 is that the filter cup 2 is further improved:

The filter cup has a circular tube-shaped inner cup wall 21, a circular tube-shaped outer cup wall 23, and two partition plates 25 integrally connected between the inner cup wall and the outer cup wall; the inner cup wall A filter screen 22 is connected to one side of the two isolation plates between the lower end of the outer cup wall and the upper end of the inner cup wall, and the other side of the two isolation plates is connected between the upper end of the inner cup wall and the middle or upper part of the inner wall of the outer cup wall. The second filter screen 26, the outer cup wall is formed with a juice outlet 27 located above the second filter screen; the first filter tank 2a is located on the side of the first filter screen in the filter cup, which is located on the side of the second filter screen For the second filter tank 2b.

The filter screen is 30-35 mesh, and the second filter screen is 80-85 mesh.

The upper end of the juice cup is formed with a liquid guide port that protrudes outwards, and a handle is formed on the side of the outer side wall of the juice cup away from the liquid guide port; the juice outlet 27 is in phase with the liquid guide port. close; the lower end of the outer cup wall is lower than the lower end of the liquid guiding port.

A support ring is formed on the outer periphery of the upper end of the outer cup wall, the support ring abuts on the outer periphery of the upper end of the juice cup, and the lower end of the grinding cup is inserted into the inner periphery of the support ring.

The filter screen and the second filter screen are both metal meshes, and the aperture of the second filter screen is smaller than that of the filter screen. When using the present invention, the water through hole on the grinding cup is located above the filter screen, and the filter screen is filtered for the first time; The network performs a second level of filtering. In this way, the two-stage filtration of fruit juice, especially the soy milk, contains less residue and has a better taste; on the other hand, the filter screen for the first-stage filtration has a larger aperture to prevent the bean dregs from clogging the filter screen and the soy milk infiltrating the filter screen. Overflow from the upper end of the first filter tank 2a.

Claims (7)

1. A household multifunctional soymilk maker is characterized in that: it comprises a juice-containing cup, an annular filter cup installed on the upper end of the juice-containing cup, and a grinding cup installed on the upper end of the filter cup; The grinding cup includes a circular groove-shaped cup body and a circular groove-shaped motor mounting cavity formed at the middle position of the lower end of the cup body, and the lower end of the motor mounting cavity passes through the filter cup and extends to the inner bottom of the juice holding cup, The lower end of the motor installation cavity is connected with a heater for heating the soybean milk in the juice-containing cup; the bottom of the cup body is formed with a drainage through hole leading to the filter cup; A motor with an output shaft facing upwards is fixedly installed in the motor installation cavity, a ring-shaped electromagnet is fixedly installed at the bottom of the cup body above the motor, and the output shaft of the motor passes through the middle hole of the electromagnet. and the output shaft and the middle hole of the electromagnet are rotatably connected by a sealed bearing; The outer circumference of the electromagnet is a polygonal structure, the upper part of the electromagnet is sleeved with a lower grinding disc, the outer circumference of the lower grinding disc is a cylindrical wall surface, and the lower end of the lower grinding disc is formed with a polygonal positioning groove that is matched and inserted with the electromagnet; In the grinding cup, located at the upper end of the lower grinding plate, there is detachably an upper grinding plate a for grinding soybean milk in cooperation with the lower grinding plate; a transmission hole is formed in the middle of the upper grinding plate a, and the output shaft corresponds to the upper grinding plate a. The position of the upper grinding plate a is formed with a positioning part of the upper grinding plate a that is matched and inserted with the transmission hole; The upper end of the upper grinding disc a is formed with an annular notch on the outer periphery of the transmission hole, the bottom of the notch is formed with a bean inlet hole that penetrates the upper grinding disc a, and an annular groove is formed on the outer periphery of the upper grinding disc a. A permanent magnet that is magnetically attracted to the electromagnet is fixedly installed in the annular groove; The upper end of the upper grinding disc a is connected with a feeding cup, and a positioning boss is formed in the middle of the lower end of the feeding cup, which is matched with the notch on the upper grinding disc a, and an arc is formed in the feeding cup. In the feeding cup, one side of the separator is a water storage tank, and the other side is a bean storage tank. material mouth; A water flow regulating tank in the shape of a circular tank body is formed in the feeding cup at a position between the water storage tank and the bean storage tank. The connected water outlet, the water inlet is in the shape of a longitudinally arranged rectangle, the water outlet is in the shape of a longitudinally arranged strip slit, and the area of the water inlet is 5-10 times the area of the water outlet; the water flow adjustment groove A regulating piston is slidably installed inside, and the regulating piston includes a cylindrical rubber piston body and a piston rod coaxially connected to the upper end of the piston body; In the grinding cup, there is a detachable upper grinding plate b on the upper end of the lower grinding plate, which is used for grinding juice in cooperation with the lower grinding plate. The upper end surface of the upper grinding plate b is located on the outer periphery of the fruit feeding port and is formed with driven teeth, and the upper end surface of the upper grinding plate b is located on the outer circumference of the driven teeth. An annular groove is formed on the outer periphery of the convex ring, and a permanent magnet that is magnetically attracted to the electromagnet is fixedly installed in the annular groove of the upper grinding disc b; The lower end surface of the upper grinding plate b is located on the outer periphery of the fruit feeding port, and is formed with a conical surface with a high middle and a low outer periphery, and the conical surface is formed with arc-shaped ribs distributed in a circumferential array; The output shaft of the motor is located above the positioning part of the upper grinding disc a is a screw part, and a pressing mechanism is connected to the screw part through a thread; the pressing mechanism includes a rotating rod body and is integrally connected to the outside of the rotating rod. The lower end of the rotating rod body is formed with a connecting screw hole that is threadedly connected to the screw part; the outer circumference of the lower end of the rotating rod body is connected with an annular linkage ring through 2-3 connecting blades, The lower end surface of the linkage ring is formed with driving teeth that cooperate with the driven teeth on the upper grinding disc b for transmission; When the upper grinding disc b is set on the upper end of the lower grinding disc, a feeding chute is detachably connected to the upper end of the grinding cup. 2. A household multifunctional soymilk maker as claimed in claim 1, characterized in that: the output shaft of the motor rotates clockwise, the screw portion and the connecting screw hole are connected by a left-hand thread, and the drive tooth and the driven teeth are one-way teeth for clockwise one-way transmission; each of the pressing blades is on a left-handed helix. 3 . The household multifunctional soymilk maker according to claim 2 , wherein the lower end surface of the connecting blade faces obliquely downward in the clockwise direction, and the inclination angle of the connecting blade is smaller than that of the pressing blade. 4 . 4. A household multifunctional soymilk maker according to claim 1, 2 or 3, characterized in that: the upper end of the rotating rod body is rotatably connected with a screw-out rod through a pin shaft, and the upper side of the rotating rod body is formed with a The side tank for accommodating the unscrewing rod; during the juice extraction process, the unscrewing rod is rotated into the side tank, and after use, the unscrewing rod is unfolded to unscrew the pressing mechanism from the output shaft of the motor, and the unscrewing During the pressing mechanism, the motor rotates reversely at a speed of 0.2-1 revolutions per second. 5. A household multifunctional soymilk maker as claimed in claim 1, characterized in that: the angle between the conical surface and the horizontal direction is 2-5 degrees, and the outer ends of the arc-shaped rib face the opposite direction. Clockwise curved. 6 . The household multifunctional soymilk maker according to claim 1 , wherein a cup handle is formed on the side wall of the cup body, and a power interface is installed on the side wall of the cup body under the cup handle. 7 . A control panel is installed at a position away from the side wall of the body and the cup handle, a control circuit board is installed in the control panel, and the motor, heater and power interface are respectively electrically connected to the control circuit board; the control panel is also installed There are a control button a to control the clockwise rotation of the motor, a control button b to control the heater to work, and a control button c to control the counterclockwise rotation of the motor to remove the pressing mechanism. 7. A household multifunctional soymilk maker as claimed in claim 1, characterized in that: the diameters of the lower grinding disc, the upper grinding disc a, and the upper grinding disc b are 10-16 cm.