Soybean milk grinding equipment

Abstract

The utility model relates to the technical field of soybean milk grinding equipment, and discloses soybean milk grinding equipment which comprises a sheet grinding cylinder and a heavy flow grinding cylinder, a cylinder cover is installed on the top of the heavy flow grinding cylinder, a conveying pipe is fixedly communicated with the bottom of the sheet grinding cylinder, one end of the conveying pipe is fixedly communicated with the cylinder cover, and an infusion pump is installed on the conveying pipe. Soybean milk in the sheet grinding cylinder is conveyed into the heavy flow grinding cylinder through the infusion pump, and a liquid outlet is formed in the bottom of the heavy flow grinding cylinder; the device further comprises a sheet grinding unit and a heavy flow grinding unit, the sheet grinding unit designed by the utility model realizes primary grinding on raw beans, the raw beans are made into raw bean particles with the particle size of less than 100 microns, then the raw bean particles are conveyed into the heavy flow grinding unit and are subjected to secondary grinding, and the raw bean particles are ground through the rotation of the rotary inner cylinder. And the soybean milk subjected to primary grinding is rotated to form eddy current, and the raw soybean particles are ground to be below 1 micron in cooperation with extrusion of an ore grinding medium, so that the preparation of the high-quality soybean-dreg-free full soybean milk is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of soymilk grinding equipment, and specifically relates to a soymilk grinding equipment. Background Art

[0002] The development process of traditional soy product production technology in China is complicated. A large amount of soybean residue is generated in large-scale soymilk production. How to deal with these soybean residues is a pain point in the industry and may cause environmental pollution. If the soybean residues are not properly treated or cannot be recycled, such as through landfill or untreated discharge, it may have an adverse impact on land and water resources.

[0003] Traditional soymilk grinding equipment will produce a certain amount of soybean residue. The soybean residue that is not effectively utilized (regarded as a by-product in the process of making soymilk) is a waste of resources. Dealing with a large amount of soybean residue may require additional energy, such as transportation, treatment, and disposal, increasing the overall energy consumption of the production process and having a negative impact on the environment. Therefore, it is urgent to design a nano soymilk without soybean residue to make the soymilk processing industry no longer produce this by-product of soybean residue. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a soymilk grinding equipment to solve the problem that the traditional soymilk grinding equipment cannot prepare soymilk without soybean residue proposed in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A soymilk grinding equipment, including a sheet grinding cylinder and a heavy flow grinding cylinder. A cylinder cover is installed at the top of the heavy flow grinding cylinder, and a transmission pipe is fixedly communicated at the bottom of the sheet grinding cylinder, and one end of the transmission pipe is fixedly communicated with the cylinder cover. A liquid extraction pump is installed on the transmission pipe, and the soymilk in the sheet grinding cylinder is transmitted into the heavy flow grinding cylinder through the liquid extraction pump. An outlet is opened at the bottom of the heavy flow grinding cylinder; it also includes a sheet grinding unit installed in the sheet grinding cylinder for slicing and rubbing raw soybeans to achieve preliminary grinding; and a heavy flow grinding unit installed in the heavy flow grinding cylinder for heavy flow peeling of the preliminarily ground raw soybeans to make nano soymilk.

[0006] Preferably, the sheet grinding unit includes a fixed knife disc, a moving knife disc, and a driving rod. The driving rod is rotatably inserted at the bottom of the sheet grinding cylinder, and a sheet grinding motor is fixed at the bottom of the sheet grinding cylinder through a motor bracket. The output end of the sheet grinding motor is fixedly connected with the bottom of the driving rod through a coupling. The moving knife disc is located in the sheet grinding cylinder and is fixedly connected with the top of the driving rod. A docking ring is fixed on the outside of the fixed knife disc, and the docking ring is fixed with the top of the sheet grinding cylinder through bolts. A bean bin for raw soybeans to be put in is opened on the fixed knife disc.

[0007] Preferably, the gap between the fixed knife disc and the moving knife disc is less than 100 microns.

[0008] Preferably, the heavy flow grinding unit includes a rotating inner cylinder, a locking mechanism and a driving mechanism. A first docking groove is formed at the bottom of the rotating inner cylinder, and a rotating shaft is rotatably installed at the bottom of the rotating inner cylinder. A second docking groove is formed at the bottom of the rotating shaft, and eddy current blades are fixed on the outer side of the rotating shaft. The driving mechanism is installed at the bottom of the heavy flow grinding cylinder, and is inserted into the first docking groove and the second docking groove to drive the rotating inner cylinder and the eddy current blades to rotate. Sieve holes with a pore diameter of 1 micron are formed on the outer wall of the rotating inner cylinder. An annular track plate is fixed on the inner wall of the bottom of the rotating inner cylinder, and two heavy flow grinding mechanisms are inserted on the annular track plate. A positioning ring is fixed at the bottom of the rotating inner cylinder, and a ring groove adapted to the positioning ring is formed at the bottom of the heavy flow grinding cylinder. The locking mechanism is installed at the ring groove.

[0009] Preferably, the heavy flow grinding mechanism includes two arc-shaped frames. The two arc-shaped frames are slidably docked with the annular track plate, and the arc-shaped frames are in contact with the rotating inner cylinder. A number of grinding media are placed in the arc-shaped frames. Sieve holes with a pore diameter greater than 100 microns and less than 200 microns are formed on the outer walls of the arc-shaped frames, and the particle size of the grinding media is equal to 0.6 mm.

[0010] Preferably, the locking mechanism includes a locking ball, an electric push rod and a push plate. A locking groove is formed inside the positioning ring, and a spherical groove for the movement of the locking ball is formed at the ring groove. The electric push rod is fixed at the bottom of the heavy flow grinding cylinder, and the output end of the electric push rod is fixed to the push plate. When the push plate moves upward, it drives the locking ball to move in the spherical groove and fit with the locking groove.

[0011] Preferably, the driving mechanism includes a driving motor fixed at the bottom of the heavy flow grinding cylinder. An end plate is fixed at the output end of the driving motor, and a connecting rod is fixed on the end plate. A first docking post adapted to the first docking groove is slidably sleeved on the outer side of the connecting rod, and a second docking post adapted to the second docking groove is fixed on the first docking post. A buffer spring that abuts against the first docking post and the end plate is sleeved on the outer side of the connecting rod.

[0012] Preferably, a plurality of docking balls are equiangularly installed on the inner wall of the top of the heavy flow grinding cylinder, and the plurality of docking balls are in contact with the outer wall of the rotating inner cylinder.

[0013] Preferably, the heavy flow grinding unit further includes a plugging rod. A positioning port is formed at the outer end of the rotating shaft. The bottom of the plugging rod is inserted into the outer side of the rotating shaft and fits with the positioning port. Two wiping brush plates are fixed on the outer side of the plugging rod through a connecting plate, and the two wiping brush plates are in contact with the rotating inner cylinder.

[0014] A soymilk grinding process based on a soymilk grinding device includes the following steps:

[0015] S1. Selection of soybeans: Remove impurities such as soil, stones, grass clippings, and dust mixed in the soybean raw materials, and select soybeans without mildew spots, with bright color, and plump grains.

[0016] S2. Soaking soybeans: Pour clean soybeans into the soybean soaking metering bin. A weight sensor is installed on the metering bin to accurately sense the weight of soybeans in the soaking bin, and cold soft water or pure water is injected for soaking according to the weight ratio of soybeans to water of 1:2.3.

[0017] S3. Flaking, grinding, and rubbing: The soaked soybeans are preliminarily ground through the flaking and grinding unit, so that the original bean particle size is less than 100 microns.

[0018] S4. Heavy-flow stripping of nano soymilk: The soymilk with an original bean particle size less than 100 microns is introduced into the heavy-flow grinding cylinder through the transfer pipe, and the soymilk particles are ground to a particle size of less than 1 micron by the heavy-flow grinding unit.

[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0020] 1. The flaking and grinding unit designed in the present utility model realizes the preliminary grinding of the original beans, making the original bean particles with a particle size less than 100 microns, and then transferring them to the heavy-flow grinding unit for secondary grinding. Through the rotation of the rotating inner cylinder, the preliminarily ground soymilk rotates to form a vortex, and with the extrusion of the grinding medium, the original bean particles are ground to less than 1 micron, thereby realizing the preparation of high-quality soymilk without soybean residue.

[0021] 2. The rotating inner cylinder designed in the present utility model is detachable. After detachment, it is docked with the insertion rod and the wiping brush plate to realize the cleaning of the rotating inner cylinder, avoiding the attachment of soymilk residues on the inner wall of the rotating inner cylinder and affecting the passage of soymilk. Brief Description of the Drawings

[0022] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0023] Figure 2 is a schematic diagram of the structure of the flaking and grinding unit of the present utility model after partial section;

[0024] Figure 3 is a rear view of the partial section of the flaking and grinding unit and the heavy-flow grinding unit of the present utility model;

[0025] Figure 4 is a schematic diagram of the structure of the rotating inner cylinder separated from the heavy-flow grinding cylinder of the present utility model;

[0026] Figure 5 is a schematic diagram of the installation and disassembly of the rotating inner cylinder and the heavy-flow grinding cylinder of the present utility model;

[0027] Figure 6This is a partial cross-sectional schematic view after the rotation inner cylinder of the present utility model is docked with the heavy flow grinding cylinder;

[0028] Figure 7 This is a partial cross-sectional schematic view after the rotation inner cylinder of the present utility model is separated from the heavy flow grinding cylinder;

[0029] Figure 8 This is a structural schematic view after the plugging rod of the present utility model is docked with the rotating shaft.

[0030] In the figure: 1, sheet grinding cylinder; 2, heavy flow grinding cylinder; 3, cylinder cover; 4, sheet grinding unit; 5, heavy flow grinding unit; 6, fixed cutter disc; 7, moving cutter disc; 8, driving rod; 9, sheet grinding motor; 10, docking ring; 11, rotation inner cylinder; 12, locking mechanism; 13, driving mechanism; 14, docking groove one; 15, rotating shaft; 16, docking groove two; 17, eddy current blade; 18, annular track plate; 19, positioning ring; 20, annular groove; 21, heavy flow grinding mechanism; 22, arc-shaped frame; 23, locking ball; 24, electric push rod; 25, pushing plate; 26, locking groove; 27, spherical groove; 28, driving motor; 29, end plate; 30, connecting rod; 31, docking column one; 32, docking column two; 33, buffer spring; 34, docking ball; 35, plugging rod; 36, positioning port; 37, wiping brush plate. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0032] Embodiment 1: Please refer to Figure 1 - Figure 3 , a soymilk grinding device shown in the figure, includes a sheet grinding cylinder 1 and a heavy flow grinding cylinder 2. A cylinder cover 3 is installed at the top of the heavy flow grinding cylinder 2. The bottom of the sheet grinding cylinder 1 is fixedly communicated with a transmission pipe, and one end of the transmission pipe is fixedly communicated with the cylinder cover 3. A liquid extraction pump is installed on the transmission pipe, and the soymilk in the sheet grinding cylinder 1 is transmitted into the heavy flow grinding cylinder 2 through the liquid extraction pump. An outlet is opened at the bottom of the heavy flow grinding cylinder 2; it further includes a sheet grinding unit 4 installed in the sheet grinding cylinder 1 for performing sheet grinding and rubbing on the original beans to achieve preliminary grinding; and a heavy flow grinding unit 5 installed in the heavy flow grinding cylinder 2 for performing heavy flow peeling on the preliminarily ground original beans to make nano soymilk;

[0033] In this solution, through the designed sheet grinding unit 4 and heavy flow grinding unit 5, double grinding of the original beans is realized to make nano soymilk.

[0034] Further, referring to Figure 2 and Figure 3 , the flaking and grinding unit 4 includes a fixed cutter disc 6, a moving cutter disc 7 and a driving rod 8. The driving rod 8 is rotationally inserted into the bottom of the flaking and grinding cylinder 1. A flaking and grinding motor 9 is fixed to the bottom of the flaking and grinding cylinder 1 through a motor bracket. The output end of the flaking and grinding motor 9 is fixed to the bottom of the driving rod 8 through a coupling. The moving cutter disc 7 is located inside the flaking and grinding cylinder 1 and is fixed to the top of the driving rod 8. A docking ring 10 is fixed to the outside of the fixed cutter disc 6, and the docking ring 10 is fixed to the top of the flaking and grinding cylinder 1 by bolts. A bean bin for feeding raw beans is provided on the fixed cutter disc 6;

[0035] Among them, in order to make the raw bean particles in the ground soy milk meet the standard, the gap between the fixed cutter disc 6 and the moving cutter disc 7 is set to be less than 100 microns.

[0036] The principle of the flaking and grinding unit 4 for preliminary grinding of raw beans: Pour the washed raw beans into the bean bin, and then drive the driving rod 8 to rotate through the flaking and grinding motor 9, so that the moving cutter disc 7 rotates. The adjacent surfaces of the moving cutter disc 7 and the fixed cutter disc 6 are engraved with spiral lines and blades, so as to squeeze and crush the raw beans in the bean bin and push them outwards, so that the crushed raw beans are discharged from the gap between the fixed cutter disc 6 and the moving cutter disc 7. Since the gap between the fixed cutter disc 6 and the moving cutter disc 7 is less than 100 microns, the raw bean particles in the prepared raw pulp will be less than 100 microns;

[0037] It should also be noted that: as Figure 2 and Figure 3 shown, the bottom of the flaking and grinding cylinder 1 is set to be inclined, which is convenient for the soy milk to enter the transmission pipe for transmission.

[0038] Further, referring to Figure 3 - Figure 5 , the heavy flow grinding unit 5 includes a rotating inner cylinder 11, a locking mechanism 12 and a driving mechanism 13. A docking groove 14 is provided at the bottom of the rotating inner cylinder 11. A rotating shaft 15 is rotatably installed at the bottom of the rotating inner cylinder 11. A docking groove 16 is provided at the bottom of the rotating shaft 15. Eddy current blades 17 are fixed to the outside of the rotating shaft 15. The driving mechanism 13 is installed at the bottom of the heavy flow grinding cylinder 2. The driving mechanism 13 is inserted into the docking groove 14 and the docking groove 16 to drive the rotating inner cylinder 11 and the eddy current blades 17 to rotate. Sieve holes are provided on the outer wall of the rotating inner cylinder 11, and the aperture of the sieve holes is 1 micron. An annular track plate 18 is fixed to the inner wall of the bottom of the rotating inner cylinder 11. Two heavy flow grinding mechanisms 21 are inserted on the annular track plate 18. A positioning ring 19 is fixed to the bottom of the rotating inner cylinder 11. A ring groove 20 adapted to the positioning ring 19 is provided at the bottom of the heavy flow grinding cylinder 2. The locking mechanism 12 is installed at the ring groove 20;

[0039] Among them, the reflow grinding mechanism 21 includes two arc-shaped frames 22. The two arc-shaped frames 22 are slidably docked with the annular track plate 18. The arc-shaped frame 22 is in contact with the rotating inner cylinder 11. A number of grinding media are placed inside the arc-shaped frame 22. The outer wall of the arc-shaped frame 22 is provided with sieve holes with a pore diameter greater than 100 microns and less than 200 microns, and the particle size of the grinding media is equal to 0.6 mm;

[0040] At the same time, the driving mechanism 13 includes a driving motor 28 fixed to the bottom of the reflow grinding cylinder 2. A end plate 29 is fixed to the output end of the driving motor 28. A connecting rod 30 is fixed to the end plate 29. A docking post 31 adapted to the first docking groove 14 is slidably sleeved on the outside of the connecting rod 30. A docking post 32 adapted to the second docking groove 16 is fixed to the docking post 31. A buffer spring 33 that abuts against the docking post 31 and the end plate 29 is sleeved on the outside of the connecting rod 30.

[0041] The principle of the reflow grinding unit 5 for secondary grinding of raw beans: First, the preliminarily ground soybean milk is transported into the rotating inner cylinder 11 through a transmission pipe. The outer side of the rotating inner cylinder 11 is provided with sieve holes of 1 micron. For the raw bean particles in the soybean milk that are larger than 1 micron, they will all be inside the rotating inner cylinder 11. The sieve holes of the arc-shaped frame 22 are between 100 microns and 200 microns, and the soybean milk can easily enter. Subsequently, the driving motor 28 in the driving mechanism 13 rotates, driving the corresponding rotation of the rotating inner cylinder 11 and the rotating shaft 15. Under the action of the eddy current blades 17, the soybean milk in the rotating inner cylinder 11 forms an eddy current, and under the action of gravity and inertia during the rotation process, it fits against the inner wall of the rotating inner cylinder 11. During the rotation process, the multiple grinding media will fit and squeeze against each other, and the raw bean particles will be in contact and squeezed to form finer raw bean particles;

[0042] It should also be noted that the material of the grinding media is zirconia, and the particle size is 0.6 - 1.5 mm. A number of magic resistance media are distributed inside the arc-shaped frame 22. The gap between the balls is point contact. Through the friction and shear between the balls, one ball is equivalent to a crusher. A device is equipped with 1 million balls, which is equivalent to one million crushers working simultaneously. The soybean particles must pass through the contact surface between the balls, so it is easy to process the particles to less than 1 micron.

[0043] In this solution, considering that a lot of raw bean impurities will remain on the inner wall of the rotating inner cylinder 11, making it difficult for the raw bean particles to be discharged during grinding. At this time, the operator first opens the cylinder cover 3, and then opens the locking mechanism 12, as Figure 5As shown, take out the rotating inner cylinder 11 to disassemble the rotating inner cylinder 11, which is convenient for subsequent cleaning. At the same time, when installing the rotating inner cylinder 11, only need to insert the rotating inner cylinder 11 into the heavy flow grinding cylinder 2. During the insertion process, first align the docking groove 14 at the bottom of the rotating inner cylinder 11 with the docking column 2 32, and then insert it. After insertion, the docking column 2 32 will extend into the docking groove 14 and abut against the docking groove 2 16, so that finally the docking column 1 31 is inserted into the docking groove 14, and the docking column 2 32 is inserted into the docking groove 2 16.

[0044] In this solution, in order to make the rotation of the rotating inner cylinder 11 more stable, a plurality of docking balls 34 are installed at equal angles on the inner wall of the top of the heavy flow grinding cylinder 2, and the plurality of docking balls 34 are in contact with the outer wall of the rotating inner cylinder 11.

[0045] A soymilk grinding process based on a soymilk grinding device includes the following steps:

[0046] S1. Selection of soybeans, remove sundries such as soil, stones, grass clippings and dust mixed in the soybean raw materials, and select soybeans without mildew spots, bright color and plump grains;

[0047] S2. Soaking soybeans, pour clean soybeans into the soybean soaking metering bin. A weight sensor is installed on the metering bin to accurately sense the weight of soybeans in the soaking bin, and inject cold soft water or pure water for soaking according to the weight ratio of soybeans to water of 1:2.3;

[0048] S3. Slice grinding and rubbing, preliminarily grind the soaked soybeans through the slice grinding unit 4 so that the size of the original soybean particles is less than 100 microns;

[0049] S4. Heavy flow stripping nano soymilk, introduce the soymilk with the size of the original soybean particles less than 100 microns into the heavy flow grinding cylinder 2 through the transfer pipe, and use the heavy flow grinding unit 5 to grind the soymilk particles to a particle size of less than 1 micron.

[0050] It should also be noted that after preparing soymilk with a particle size of less than 1 micron, cooking of soymilk is also required.

[0051] The principle of cooking soymilk is to make the soybean protein disperse evenly to prepare for subsequent brine coagulation. By heating, the soybean protein in the raw soymilk denatures, the molecular movement is intense, the hydrogen bonds are broken, and the spatial structure is changed. Destroy the hydrogen bonds that maintain the spatial structure of the protein, so that the protein forms a gel under the action of the coagulant and undergoes gelation.

[0052] After heating, natural soy protein becomes denatured soy protein, presenting an amorphous agglomerated state. During the soymilk boiling process, harmful substances such as trypsin inhibitor, hemagglutinin, and saponin also lose their activity, achieving the effect of sterilization (i.e., protein denaturation). In addition, boiling soymilk can improve the digestibility of soy protein, increase the effective lysine content, reduce odors, disinfect and sterilize, and extend the product's fresh-keeping shelf life.

[0053] During the soymilk boiling process, pay attention to the phenomenon of false boiling to ensure that the temperature reaches 100°C. At 94°C, soymilk will undergo a salting-out reaction, and the protein in this document cannot precipitate, making it impossible to carry out the process of curdling. In addition, if the soymilk boiling time is too long, it may cause polypeptides to decompose into amino acids. Adding an appropriate amount of NaHCO3 can reduce the formation of amino acids, which is beneficial to the subsequent processing process.

[0054] Example 2: Please refer to Figure 5 - Figure 7 This embodiment further illustrates Example 1, and the difference lies in the disclosure of one embodiment of the locking mechanism 12.

[0055] Specifically, the locking mechanism 12 includes a locking ball 23, an electric push rod 24, and a push plate 25. A locking groove 26 is opened inside the positioning ring 19, and a spherical groove 27 for the movement of the locking ball 23 is opened at the annular groove 20. The electric push rod 24 is fixed at the bottom of the heavy flow grinding cylinder 2, the output end of the electric push rod 24 is fixed to the push plate 25, and when the push plate 25 moves upward, it drives the locking ball 23 to move in the spherical groove 27 and fit with the locking groove 26.

[0056] In this solution, through the telescopic movement of the electric push rod 24, the push plate 25 is driven to perform corresponding telescopic movements. After the push plate 25 moves downward, it no longer fits with the locking ball 23. When the operator pulls out the rotating inner cylinder 11 outward, it will drive the positioning ring 19 to move upward, completing the disassembly of the rotating inner cylinder 11. When installing the rotating inner cylinder 11, it only needs to first insert the positioning ring 19 into the annular groove 20, and then drive the push plate 25 to lift by the electric push rod 24 to push the locking ball 23, so that the locking ball 23 abuts against the locking groove 26, realizing the locking and positioning of the positioning ring 19, and thus completing the axial locking of the rotating inner cylinder 11 without affecting its normal rotation.

[0057] Example 3: Please refer to Figure 8 This embodiment further illustrates other embodiments, and the difference lies in the addition of the structure of the heavy flow grinding unit 5.

[0058] Specifically, the reflow grinding unit 5 further includes a plugging rod 35. A positioning port 36 is formed at the outer end of the rotating shaft 15. The bottom of the plugging rod 35 is inserted into the outside of the rotating shaft 15 and fits with the positioning port 36. Two wiping brush plates 37 are fixed to the outside of the plugging rod 35 through a connecting plate. The two wiping brush plates 37 are in contact with the rotating inner cylinder 11. After the rotating inner cylinder 11 is removed, the operator takes out the plugging rod 35 and inserts it into the rotating shaft 15 correspondingly, and makes the two wiping brush plates 37 located between the two arc-shaped frames 22. Then, by rotating the plugging rod 35, the wiping brush plates 37 are driven to clean the residual debris on the inner wall of the rotating inner cylinder 11.

[0059] It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0060] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A soymilk grinding device, characterized in that: include: A sheet grinding cylinder (1) and a heavy-flow grinding cylinder (2), wherein a cylinder cover (3) is installed on the top of the heavy-flow grinding cylinder (2), and the bottom of the sheet grinding cylinder (1) is fixedly connected to a transmission pipe, and one end of the transmission pipe is fixedly connected to the cylinder cover (3), and a liquid pump is installed on the transmission pipe, and the soy milk in the sheet grinding cylinder (1) is transferred to the heavy-flow grinding cylinder (2) through the liquid pump, and a liquid outlet is opened at the bottom of the heavy-flow grinding cylinder (2); Also includes: A sheet grinding unit (4), wherein the sheet grinding unit (4) is installed in the sheet grinding cylinder (1) and is used to perform sheet grinding and kneading on the raw beans to achieve preliminary grinding; and A gravity flow mill unit (5) is installed in the gravity flow mill cylinder (2) and is used for gravity flow peeling of the raw beans after preliminary grinding to produce nano soy milk.

2. A soymilk grinding device according to claim 1, characterized in that: The sheet grinding unit (4) comprises a fixed blade disc (6), a movable blade disc (7) and a driving rod (8); the driving rod (8) is rotatably plugged into the bottom of the sheet grinding cylinder (1); a sheet grinding motor (9) is fixed to the bottom of the sheet grinding cylinder (1) via a motor frame; the output end of the sheet grinding motor (9) is fixed to the bottom of the driving rod (8) via a coupling; the movable blade disc (7) is located in the sheet grinding cylinder (1) and is fixed to the top of the driving rod (8); a docking ring (10) is fixed to the outside of the fixed blade disc (6); the docking ring (10) is fixed to the top of the sheet grinding cylinder (1) via bolts; and a bean bin for inputting raw beans is provided on the fixed blade disc (6).

3. A soymilk grinding device according to claim 2, characterized in that: The gap between the fixed blade disc (6) and the movable blade disc (7) is less than 100 micrometers.

4. A soymilk grinding device according to claim 1, characterized in that: The heavy flow grinding unit (5) comprises a rotating inner cylinder (11), a locking mechanism (12) and a driving mechanism (13); a first docking groove (14) is provided at the bottom of the rotating inner cylinder (11); a rotating shaft (15) is rotatably mounted at the bottom of the rotating inner cylinder (11); a second docking groove (16) is provided at the bottom of the rotating shaft (15); and vortex blades (17) are fixed to the outside of the rotating shaft (15); the driving mechanism (13) is mounted at the bottom of the heavy flow grinding cylinder (2); the driving mechanism (13) is plugged into the first docking groove (14) and the second docking groove (16); The rotating inner cylinder (11) and the vortex blades (17) are rotated, the outer wall of the rotating inner cylinder (11) is provided with sieve holes, the aperture of the sieve holes is 1 micron, an annular track plate (18) is fixed on the inner wall of the bottom of the rotating inner cylinder (11), and two heavy flow grinding mechanisms (21) are inserted on the annular track plate (18), a positioning ring (19) is fixed on the bottom of the rotating inner cylinder (11), and an annular groove (20) matched with the positioning ring (19) is formed on the bottom of the heavy flow grinding cylinder (2), and the locking mechanism (12) is installed at the annular groove (20).

5. A soymilk grinding device according to claim 4, characterized in that: The heavy flow mill mechanism (21) comprises two arc frames (22), the two arc frames (22) are slidably connected to the annular track plate (18), and the arc frames (22) are in contact with the rotating inner cylinder (11), a plurality of grinding media are placed in the arc frames (22), and the outer wall of the arc frames (22) is provided with sieve holes with an aperture greater than 100 microns and less than 200 microns, and the particle size of the grinding media is equal to 0.6 mm.

6. A soymilk grinding device according to claim 4, characterized in that: The locking mechanism (12) comprises a locking ball (23), an electric push rod (24) and a push plate (25); a locking groove (26) is provided on the inner side of the positioning ring (19), and a spherical groove (27) for the locking ball (23) to move is provided at the ring groove (20); the electric push rod (24) is fixed to the bottom of the heavy flow grinding drum (2), and the output end of the electric push rod (24) is fixed to the push plate (25); the push plate (25) moves upward, driving the locking ball (23) to move in the spherical groove (27) and fit with the locking groove (26).

7. A soymilk grinding device according to claim 4, characterized in that: The driving mechanism (13) comprises a driving motor (28) fixed to the bottom of the heavy flow grinding drum (2), an end plate (29) being fixed to the output end of the driving motor (28), and a connecting rod (30) being fixed to the end plate (29), a connecting rod (30) being slidably sleeved on the outer side of the connecting rod (30) with a docking column (31) matching with the docking groove (14), and a docking column (32) matching with the docking groove (16) being fixed on the docking column (31), and a buffer spring (33) being sleeved on the outer side of the connecting rod (30) for abutting against the docking column (31) and the end plate (29).

8. The soymilk grinding device according to claim 4, characterized in that: A plurality of docking balls (34) are mounted at equal angles on the top inner wall of the heavy flow grinding cylinder (2), and the plurality of docking balls (34) fit the outer wall of the rotating inner cylinder (11).

9. The soymilk grinding device according to claim 4, characterized in that: The heavy flow grinding unit (5) further comprises a plug-in rod (35), a positioning opening (36) is provided at the outer end of the rotating shaft (15), the bottom of the plug-in rod (35) is plugged into the outer side of the rotating shaft (15) and fits with the positioning opening (36), and two wiping brush plates (37) are fixed to the outer side of the plug-in rod (35) via a connecting plate, and the two wiping brush plates (37) fit with the rotating inner cylinder (11).

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