A soymilk grinding device and a soymilk grinding process

Abstract

This invention relates to the field of soybean milk grinding equipment technology, and discloses a soybean milk grinding equipment and process, including a flake mill and a heavy flow mill. The top of the heavy flow mill is equipped with a cover, and the bottom of the flake mill is fixedly connected to a transmission pipe. One end of the transmission pipe is fixedly connected to the cover, and a pump is installed on the transmission pipe to transfer the soybean milk in the flake mill to the heavy flow mill. The bottom of the heavy flow mill has a liquid outlet. The invention also includes a flake mill unit and a heavy flow mill unit. The flake mill unit designed in this invention performs preliminary grinding of the raw soybeans, making them into raw soybean particles with a particle size of less than 100 micrometers. Then, the raw soybeans are transferred to the heavy flow mill unit for secondary grinding. By rotating the inner cylinder, the pre-ground soybean milk is rotated to form a vortex. Combined with the extrusion of the grinding media, the raw soybean particles are ground to less than 1 micrometer, thereby achieving the preparation of high-quality soybean milk without soybean residue.

Description

Technical Field

[0001] This invention relates to the field of soybean milk grinding equipment technology, specifically to a soybean milk grinding device and a soybean milk grinding process. Background Technology

[0002] The traditional soybean product manufacturing process in my country is complex, and large-scale soybean milk production generates a large amount of soybean residue. How to dispose of this residue is a major challenge for the industry, potentially causing environmental pollution. Improper handling or failure to recycle soybean residue, such as through landfill or untreated discharge, can have adverse effects on land and water resources.

[0003] Traditional soy milk grinding equipment produces a certain amount of soy residue. This unused soy residue (considered a byproduct of soy milk production) is a waste of resources. Processing large amounts of soy residue may require additional energy, such as for transportation, processing, and disposal, increasing the overall energy consumption of the production process and having a negative impact on the environment. Therefore, there is an urgent need to design a nano-sized soy residue-free soy milk product so that the soy milk processing industry no longer produces this byproduct. Summary of the Invention

[0004] The purpose of this invention is to provide a soybean milk grinding device and a soybean milk grinding process to solve the problem mentioned in the background art that traditional soybean milk grinding devices cannot produce soybean milk without soybean residue.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a soybean milk grinding device, comprising a flake mill and a reflow mill, wherein a cover is installed on the top of the reflow mill, and a transmission pipe is fixedly connected to the bottom of the flake mill, with one end of the transmission pipe fixedly connected to the cover; a pump is installed on the transmission pipe, and the soybean milk in the flake mill is transferred to the reflow mill via the pump; an outlet is provided at the bottom of the reflow mill; the device also includes a flake milling unit installed inside the flake mill for flake milling and kneading the raw soybeans to achieve preliminary grinding; and a reflow milling unit installed inside the reflow mill for reflow separation of the pre-ground raw soybeans to produce nano-soybean milk.

[0006] Preferably, the grinding unit includes a fixed blade disc, a movable blade disc, and a drive rod. The drive rod is rotatably connected to the bottom of the grinding cylinder, and a grinding motor is fixed to the bottom of the grinding cylinder via a motor frame. The output end of the grinding motor is fixed to the bottom of the drive rod via a coupling. The movable blade disc is located inside the grinding cylinder and is fixed to the top of the drive rod. A mating ring is fixed to the outer side of the fixed blade disc, and the mating ring is fixed to the top of the grinding cylinder via bolts. A bean hopper for feeding raw beans is provided on the fixed blade disc.

[0007] Preferably, the gap between the fixed cutter head and the moving cutter head is less than 100 micrometers.

[0008] Preferably, the heavy flow mill unit includes a rotating inner cylinder, a locking mechanism, and a driving mechanism. The bottom of the rotating inner cylinder has a first docking groove, and a rotating shaft is rotatably mounted on the bottom of the rotating inner cylinder. The bottom of the rotating shaft has a second docking groove, and vortex blades are fixed on the outer side of the rotating shaft. The driving mechanism is installed at the bottom of the heavy flow mill cylinder and is inserted into the first and second docking grooves to drive the rotating inner cylinder and vortex blades to rotate. The outer wall of the rotating inner cylinder has sieve holes with a diameter of 1 micrometer. An annular track plate is fixed on the bottom inner wall of the rotating inner cylinder, and two heavy flow mill mechanisms are installed on the annular track plate. A positioning ring is fixed at the bottom of the rotating inner cylinder, and an annular groove adapted to the positioning ring is opened at the bottom of the heavy flow mill cylinder. The locking mechanism is installed at the annular groove.

[0009] Preferably, the reflow mill mechanism includes two arc-shaped frames, which are slidably connected to an annular track plate and are in contact with the rotating inner cylinder. Several grinding media are placed inside the arc-shaped frames, and the outer wall of the arc-shaped frames is provided with sieve holes with a diameter greater than 100 micrometers and less than 200 micrometers. The particle size of the grinding media is equal to 0.6 millimeters.

[0010] Preferably, the locking mechanism includes a locking ball, an electric push rod, and a push plate. A locking groove is provided on the inner side of the positioning ring, and a spherical groove for the movement of the locking ball is provided at the ring groove. The electric push rod is fixed to the bottom of the heavy flow mill cylinder, and the output end of the electric push rod is fixed to the push plate. The push plate moves upward, driving the locking ball to move in the spherical groove and fit into the locking groove.

[0011] Preferably, the driving mechanism includes a drive motor fixed to the bottom of the heavy flow mill cylinder, an end plate fixed to the output end of the drive motor, and a connecting rod fixed to the end plate. A first docking post adapted to the first docking groove is slidably sleeved on the outside 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 abutting against the first docking post and the end plate is sleeved on the outside of the connecting rod.

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

[0013] Preferably, the reflow mill unit further includes a plug rod, the outer end of the rotating shaft is provided with a positioning port, the bottom of the plug rod is plugged into the outer side of the rotating shaft and fits with the positioning port, and two wiping brushes are fixed to the outer side of the plug rod by a connecting plate, and the two wiping brushes fit with the rotating inner cylinder.

[0014] A soybean milk grinding process based on a soybean milk grinding equipment includes the following steps:

[0015] S1. Selection of soybeans: Remove impurities such as mud, stones, grass clippings and dust from the soybean raw materials, and select soybeans that are free of mold, have a bright color and plump kernels.

[0016] S2. Soaking soybeans: Select clean soybeans and pour them into the soybean soaking metering chamber. The metering chamber is equipped with a weight sensor to accurately sense the weight of the soybeans in the soaking chamber. Soak the soybeans in cold soft water or pure water according to the soybean to water weight ratio of 1:2.3.

[0017] S3. Float grinding and kneading: The soaked soybeans are initially ground through the float grinding unit to make the original soybean particles smaller than micrometers;

[0018] S4. Reflow Exfoliation Nano-Soy Milk: Soy milk with a particle size of less than micrometers is introduced into the reflow mill cylinder through a transfer tube, and the reflow mill unit grinds the soy milk particles to a particle size of less than micrometers.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. The plate milling unit designed in this invention performs preliminary grinding of raw soybeans, making them into raw soybean particles with a particle size of less than 100 micrometers. Then, it is transferred to the heavy flow mill unit for secondary grinding. Through the rotation of the inner cylinder, the soybean milk after preliminary grinding is rotated to form a vortex. Combined with the extrusion of the grinding media, the raw soybean particles are ground to less than 1 micrometer, thereby realizing the preparation of high-quality soybean milk without soybean residue.

[0021] 2. The rotating inner cylinder designed in this invention is detachable. After disassembly, it can be connected with the plug rod and the wiping brush plate to clean the rotating inner cylinder, preventing soy milk residue from adhering to the inner wall of the rotating inner cylinder and affecting the passage of soy milk. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a partial cross-sectional view of the grinding unit of the present invention.

[0024] Figure 3 This is a partial cross-sectional rear view of the wafer milling unit and the reflow milling unit of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the rotating inner cylinder detaching from the heavy flow mill cylinder of the present invention;

[0026] Figure 5 This is a schematic diagram showing the assembly and disassembly of the rotating inner cylinder and the heavy flow mill cylinder of the present invention;

[0027] Figure 6This is a partial cross-sectional schematic diagram of the rotating inner cylinder and the heavy flow mill cylinder after docking.

[0028] Figure 7 This is a partial cross-sectional schematic diagram of the rotating inner cylinder after it has separated from the heavy flow mill cylinder of the present invention;

[0029] Figure 8 This is a schematic diagram of the structure after the plug rod of the present invention is connected to the rotating shaft.

[0030] In the diagram: 1. Plate mill cylinder; 2. Reflow mill cylinder; 3. Cylinder cover; 4. Plate mill unit; 5. Reflow mill unit; 6. Fixed cutter head; 7. Moving cutter head; 8. Drive rod; 9. Plate mill motor; 10. Connecting ring; 11. Rotating inner cylinder; 12. Locking mechanism; 13. Drive mechanism; 14. Connecting groove one; 15. Rotating shaft; 16. Connecting groove two; 17. Vortex blade; 18. Annular track plate; 19. Positioning ring; 20. Annular groove; 21. Reflow mill mechanism; 22. Arc frame; 23. Locking ball; 24. Electric push rod; 25. Push plate; 26. Locking groove; 27. Spherical groove; 28. Drive motor; 29. ​​End plate; 30. Connecting rod; 31. Connecting post one; 32. Connecting post two; 33. Buffer spring; 34. Connecting ball; 35. Insertion rod; 36. Positioning port; 37. Wiping brush plate. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1: Please refer to Figure 1 - Figure 3 The diagram shows a soybean milk grinding device, including a flake mill 1 and a reflow mill 2. A cover 3 is installed on the top of the reflow mill 2. A transmission pipe is fixedly connected to the bottom of the flake mill 1, with one end of the transmission pipe fixedly connected to the cover 3. A pump is installed on the transmission pipe to transfer the soybean milk from the flake mill 1 to the reflow mill 2. An outlet is provided at the bottom of the reflow mill 2. The device also includes a flake milling unit 4, installed inside the flake mill 1, for flake milling and kneading the raw soybeans to achieve preliminary grinding; and a reflow milling unit 5, installed inside the reflow mill 2, for reflow separation of the pre-ground raw soybeans to produce nano-soybean milk.

[0033] In this scheme, the raw soybeans are double-ground by the designed plate milling unit 4 and the heavy flow milling unit 5 to produce nano-soy milk.

[0034] For further details, please refer to [link / reference]. Figure 2 and Figure 3 The grinding unit 4 includes a fixed blade disc 6, a movable blade disc 7, and a drive rod 8. The drive rod 8 is rotatably connected to the bottom of the grinding cylinder 1. The bottom of the grinding cylinder 1 is fixed with a grinding motor 9 via a motor frame. The output end of the grinding motor 9 is fixed to the bottom of the drive rod 8 via a coupling. The movable blade disc 7 is located inside the grinding cylinder 1 and is fixed to the top of the drive 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 grinding cylinder 1 via bolts. A bean bin for feeding raw beans is provided on the fixed blade disc 6.

[0035] In order to ensure that the raw soybean particles in the ground soy milk meet the standards, the gap between the fixed blade plate 6 and the moving blade plate 7 is set to be less than 100 micrometers.

[0036] The principle of the initial grinding of raw beans by the plate milling unit 4 is as follows: the washed raw beans are poured into the bean hopper, and then the plate milling motor 9 drives the drive rod 8 to rotate, which causes the moving blade 7 to rotate. The adjacent surfaces of the moving blade 7 and the fixed blade 6 are engraved with spiral patterns and blades, which can squeeze and crush the raw beans in the bean hopper and push them outward, so that the crushed raw beans are discharged from the gap between the fixed blade 6 and the moving blade 7. Since the gap between the fixed blade 6 and the moving blade 7 is less than 100 micrometers, the raw bean particles in the prepared pulp will be less than 100 micrometers.

[0037] It should also be noted that: Figure 2 and Figure 3 As shown, the bottom of the grinding cylinder 1 is inclined to facilitate the transfer of soy milk into the transmission pipe.

[0038] For further details, please refer to [link / reference]. Figure 3 - Figure 5 The heavy flow mill unit 5 includes a rotating inner cylinder 11, a locking mechanism 12, and a driving mechanism 13. The bottom of the rotating inner cylinder 11 is provided with a docking groove 14. 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. A vortex blade 17 is fixed on the outside of the rotating shaft 15. The driving mechanism 13 is installed at the bottom of the heavy flow mill cylinder 2. The driving mechanism 13 is inserted into the docking groove 14 and the docking groove 16, driving the rotating inner cylinder 11 and the vortex blade 17 to rotate. A sieve hole is provided on the outer wall of the rotating inner cylinder 11. The sieve hole has a diameter of 1 micrometer. An annular track plate 18 is fixed on the bottom inner wall of the rotating inner cylinder 11. Two heavy flow mill mechanisms 21 are installed on the annular track plate 18. A positioning ring 19 is fixed at the bottom of the rotating inner cylinder 11. An annular groove 20 that matches the positioning ring 19 is provided at the bottom of the heavy flow mill cylinder 2. The locking mechanism 12 is installed at the annular groove 20.

[0039] The heavy flow mill mechanism 21 includes two arc-shaped frames 22, which are slidably connected to the annular track plate 18. The arc-shaped frames 22 are in contact with the rotating inner cylinder 11. Several grinding media are placed inside the arc-shaped frames 22. The outer wall of the arc-shaped frames 22 is provided with sieve holes with a diameter greater than 100 micrometers and less than 200 micrometers. The particle size of the grinding media is equal to 0.6 millimeters.

[0040] Meanwhile, the drive mechanism 13 includes a drive motor 28 fixed to the bottom of the heavy flow mill cylinder 2. An end plate 29 is fixed to the output end of the drive motor 28. A connecting rod 30 is fixed on the end plate 29. A docking post 31 that is adapted to docking groove 14 is slidably sleeved on the outside of the connecting rod 30. A docking post 32 that is adapted to docking groove 16 is fixed on the docking post 31. A buffer spring 33 that abuts against docking post 31 and end plate 29 is sleeved on the outside of the connecting rod 30.

[0041] The principle of secondary grinding of raw soybeans by the reflow mill unit 5 is as follows: First, the pre-ground soybean milk is transported to the rotating inner cylinder 11 through the transmission pipe. The outer side of the rotating inner cylinder 11 has a 1-micron sieve hole. Raw soybean particles larger than 1 micron in the soybean milk will be inside the rotating inner cylinder 11. The sieve hole of the arc frame 22 is between 100 and 200 microns, so the soybean milk can easily enter. Then, the drive motor 28 in the drive mechanism 13 rotates, which drives the rotating inner cylinder 11 and the rotating shaft 15 to rotate accordingly. Under the action of the vortex blades 17, the soybean milk in the rotating inner cylinder 11 forms a vortex. Under the action of gravity and inertia during the rotation process, it adheres to the inner wall of the rotating inner cylinder 11. During the rotation process, multiple grinding media will adhere to and squeeze each other, and the raw soybean particles will come into contact and squeeze to form finer raw soybean particles.

[0042] It should also be noted that the grinding media is made of zirconium oxide with a particle size of 0.6 to 1.5 mm. Multiple grinding media are distributed within the arc-shaped frame 22. The gap between the balls is point contact. Through the friction and shearing between the balls, one ball is equivalent to one crusher. One device is equipped with 1 million balls, which is equivalent to one million crushers working at the same time. Soybean particles must pass through this ball-to-ball contact surface, so it is easy to process the particles to less than 1 micrometer.

[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, the operator first opens the cylinder cover 3, and then opens the locking mechanism 12, as follows: Figure 5As shown, the rotating inner cylinder 11 is removed to facilitate subsequent cleaning. When installing the rotating inner cylinder 11, simply insert it into the reflow mill cylinder 2. During the insertion process, align the first docking groove 14 at the bottom of the rotating inner cylinder 11 with the second docking post 32, and then insert it. After insertion, the second docking post 32 will extend into the first docking groove 14 and abut against the second docking groove 16, thus finally connecting the first docking post 31 with the first docking groove 14 and the second docking post 32 with the second docking groove 16.

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

[0045] A soybean milk grinding process based on a soybean milk grinding equipment includes the following steps:

[0046] S1. Selection of soybeans: Remove impurities such as mud, stones, grass clippings and dust from the soybean raw materials, and select soybeans that are free of mold, have a bright color and plump kernels.

[0047] S2. Soaking soybeans: Select clean soybeans and pour them into the soybean soaking metering chamber. The metering chamber is equipped with a weight sensor to accurately sense the weight of the soybeans in the soaking chamber. Soak the soybeans in cold soft water or pure water according to the soybean to water weight ratio of 1:2.3.

[0048] S3. Plate milling and kneading: The soaked soybeans are initially ground through plate milling unit 4 to make the original soybean particle size less than 100 micrometers;

[0049] S4. Reflow stripping nano-soybean milk: Soybean milk with a particle size of less than 100 micrometers is introduced into the reflow mill cylinder 2 through the transfer tube, and the soybean milk particles are ground to a particle size of less than 1 micrometer using the reflow mill unit 5.

[0050] It should also be noted that after preparing soy milk with a particle size of less than 1 micrometer, it still needs to be boiled.

[0051] The principle behind boiling soybean milk is to disperse the soybean protein evenly, preparing it for subsequent coagulation. Heating denatures the soybean protein in raw soybean milk, causing violent molecular movement, breaking hydrogen bonds, and altering its spatial structure. This disruption of the hydrogen bonds that maintain the protein's spatial structure allows the protein to form a gel under the action of a coagulant, resulting in gelation.

[0052] Heating denatures natural soybean protein, causing it to aggregate in an amorphous state. During the boiling process, harmful substances such as trypsin inhibitors, hemagglutinins, and saponins are deactivated, achieving a sterilization effect (i.e., protein denaturation). Furthermore, boiling improves the digestibility of soybean protein, increases the content of available lysine, reduces off-odors, sterilizes, and extends the product's shelf life.

[0053] During the boiling process, be aware of the phenomenon of false boiling and ensure that the temperature reaches 100℃. Soy milk undergoes a salting-out reaction at 94℃, during which proteins cannot precipitate, preventing the coagulation process. Furthermore, excessive boiling time may cause peptides to decompose into amino acids; adding an appropriate amount of NaHCO3 can reduce amino acid formation, which is beneficial for subsequent processing.

[0054] Example 2: Please refer to Figure 5 - Figure 7 This embodiment further explains Embodiment 1, the difference being 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 provided on the inner side of the positioning ring 19, and a spherical groove 27 for the movement of the locking ball 23 is provided at the ring groove 20. The electric push rod 24 is fixed to the bottom of the heavy flow mill cylinder 2. The output end of the electric push rod 24 is fixed to the push plate 25. The push plate 25 moves upward, causing the locking ball 23 to move in the spherical groove 27 and fit into the locking groove 26.

[0056] In this design, the extension and retraction of the electric push rod 24 drives the push plate 25 to move accordingly. After the push plate 25 moves down, it is no longer in contact with the locking ball 23. When the operator pulls out the rotating inner cylinder 11, it will drive the positioning ring 19 to move up, thus completing the disassembly of the rotating inner cylinder 11. When installing the rotating inner cylinder 11, it is only necessary to first insert the positioning ring 19 into the ring groove 20, and then drive the push plate 25 to push up the electric push rod 24, so that the locking ball 23 abuts against the locking groove 26, thereby locking and positioning the positioning ring 19, 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, the difference being the addition of a reflow mill unit 5 structure.

[0058] Specifically, the reflow mill unit 5 also includes a plug rod 35. The outer end of the rotating shaft 15 is provided with a positioning port 36. The bottom of the plug rod 35 is inserted into the outer side of the rotating shaft 15 and fits into the positioning port 36. Two wiping brushes 37 are fixed to the outer side of the plug rod 35 through a connecting plate. The two wiping brushes 37 fit into the rotating inner cylinder 11. After the rotating inner cylinder 11 is disassembled, the personnel take out the plug rod 35 and insert it into the rotating shaft 15, so that the two wiping brushes 37 are between the two arc-shaped frames 22. Then, by rotating the plug rod 35, the wiping brushes 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 document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0060] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A soybean milk grinding device, characterized in that, include: The heavy flow mill (2) has a cover (3) installed on the top of the heavy flow mill (2), and the bottom of the grinding mill (1) is fixedly connected to a transmission pipe. One end of the transmission pipe is fixedly connected to the cover (3). A liquid pump is installed on the transmission pipe, and the soybean milk in the grinding mill (1) is transferred to the heavy flow mill (2) through the liquid pump. The bottom of the heavy flow mill (2) has a liquid outlet. Also includes: A flake grinding unit (4), which is installed inside a flake grinding cylinder (1), is used to flake and knead the raw beans to achieve preliminary grinding; and, The reflow mill unit (5) is installed inside the reflow mill cylinder (2) and is used to reflow and peel off the raw soybeans after preliminary grinding to make nano-soybean milk; The heavy flow mill unit (5) includes a rotating inner cylinder (11), a locking mechanism (12), and a driving mechanism (13). The bottom of the rotating inner cylinder (11) has a first docking groove (14), and a rotating shaft (15) is rotatably mounted on the bottom of the rotating inner cylinder (11). The bottom of the rotating shaft (15) has a second docking groove (16), and vortex 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 mill cylinder (2), and the driving mechanism (13) is inserted into the first docking groove (14) and the second docking groove (16). The rotating inner cylinder (11) and the vortex blades (17) rotate. The outer wall of the rotating inner cylinder (11) is provided with a sieve hole with a diameter of 1 micrometer. An annular track plate (18) is fixed on the bottom inner wall of the rotating inner cylinder (11), and two heavy flow mill mechanisms (21) are installed on the annular track plate (18). A positioning ring (19) is fixed at the bottom of the rotating inner cylinder (11), and an annular groove (20) adapted to the positioning ring (19) is opened at the bottom of the heavy flow mill cylinder (2). The locking mechanism (12) is installed at the annular groove (20). The heavy flow mill (21) includes two arc-shaped frames (22), which are slidably connected to the annular track plate (18), and the arc-shaped frames (22) are in contact with the rotating inner cylinder (11). Several grinding media are placed inside the arc-shaped frames (22). The outer wall of the arc-shaped frames (22) is provided with sieve holes with a diameter greater than 100 micrometers and less than 200 micrometers. The particle size of the grinding media is equal to 0.6 millimeters. The locking mechanism (12) includes a locking ball (23), an electric push rod (24), and a push plate (25). The positioning ring (19) has a locking groove (26) on its inner side, 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 at the bottom of the heavy flow mill cylinder (2), and the output end of the electric push rod (24) is fixed to the push plate (25). The push plate (25) moves upward, causing the locking ball (23) to move in the spherical groove (27) and fit against the locking groove (26).

2. The soybean milk grinding equipment according to claim 1, characterized in that: The grinding unit (4) includes a fixed blade disc (6), a movable blade disc (7), and a drive rod (8). The drive rod (8) is rotatably inserted into the bottom of the grinding cylinder (1), and the bottom of the grinding cylinder (1) is fixed with a grinding motor (9) via a motor frame. The output end of the grinding motor (9) is fixed to the bottom of the drive rod (8) via a coupling. The movable blade disc (7) is located inside the grinding cylinder (1) and is fixed to the top of the drive 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 grinding cylinder (1) via bolts. A bean bin for feeding raw beans is provided on the fixed blade disc (6).

3. The soybean milk grinding equipment according to claim 2, characterized in that: The gap between the fixed cutter head (6) and the moving cutter head (7) is less than 100 micrometers.

4. The soybean milk grinding equipment according to claim 1, characterized in that: The drive mechanism (13) includes a drive motor (28) fixed to the bottom of the heavy flow mill (2). The output end of the drive motor (28) is fixed with an end plate (29), and a connecting rod (30) is fixed on the end plate (29). A docking post (31) adapted to docking groove one (14) is slidably sleeved on the outside of the connecting rod (30), and a docking post two (32) adapted to docking groove two (16) is fixed on the docking post one (31). A buffer spring (33) abutting against docking post one (31) and end plate (29) is sleeved on the outside of the connecting rod (30).

5. The soybean milk grinding equipment according to claim 1, characterized in that: Multiple docking balls (34) are installed at equal angles on the top inner wall of the heavy flow mill (2), and the multiple docking balls (34) are in contact with the outer wall of the rotating inner cylinder (11).

6. The soybean milk grinding equipment according to claim 1, characterized in that: The heavy flow mill unit (5) also includes a plug rod (35). The outer end of the rotating shaft (15) is provided with a positioning port (36). The bottom of the plug rod (35) is inserted into the outer side of the rotating shaft (15) and fits into the positioning port (36). Two wiping brushes (37) are fixed to the outer side of the plug rod (35) through a connecting plate. The two wiping brushes (37) fit into the rotating inner cylinder (11).

7. The soybean milk grinding process based on the soybean milk grinding equipment according to any one of claims 1-6, characterized in that: Includes the following steps: S1. Selection of soybeans: Remove impurities such as mud, stones, grass clippings and dust from the soybean raw materials, and select soybeans that are free of mold, have a bright color and plump kernels. S2. Soaking soybeans: Select clean soybeans and pour them into the soybean soaking metering chamber. The metering chamber is equipped with a weight sensor to accurately sense the weight of the soybeans in the soaking chamber. Soak the soybeans in cold soft water according to the soybean to water weight ratio of 1:2.

3. S3. Slab milling and kneading: The soaked soybeans are initially ground through the slab milling unit (4) so ​​that the original soybean particle size is less than 100 micrometers; S4. Reflow stripping nano-soybean milk: Soybean milk with a particle size of less than 100 micrometers is introduced into the reflow mill cylinder (2) through the transfer tube, and the soybean milk particles are ground to a particle size of less than 1 micrometer using the reflow mill unit (5).

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