A corn meal grinding device for reducing the degree of breakage of corn meal

Abstract

The application discloses a corn flour grinding device capable of reducing the damage degree of corn flour, which comprises an equipment box, a feeding inlet is formed in the top of the equipment box, a second hollow shaft is arranged through the equipment box and rotationally connected with the equipment box, a driving grinding roller is fixedly installed on the outer wall of the second hollow shaft and located in the equipment box, a mounting frame is arranged on one side of the driving grinding roller and located in the equipment box, and a third hollow shaft is arranged through the mounting frame and rotationally connected with the mounting frame. The distance between the passive grinding roller and the driving grinding roller is switched by the flow of the incompressible liquid in the cam inner cavity and the distance adjusting box, coarse grinding and fine grinding are completed, and the powder is prevented from being excessively damaged. In the coarse grinding and fine grinding process, the cooling water is drawn by the water pumping piston and sent into the second hollow shaft and the third hollow shaft, the passive grinding roller and the driving grinding roller are cooled in real time, the corn flour is prevented from being damaged and adhered due to high temperature, and the product qualified rate is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of corn milling technology, and in particular to a corn flour milling device that reduces the damage of corn flour. Background Technology

[0002] As an important food crop in China, corn has a deep processing industry chain, with corn flour milling being one of the core processing links, widely used in food, feed, industry and other fields. Corn flour milling mainly involves the interaction of the milling components of the milling equipment to extrude and grind the corn raw material, processing it into powder products of different fineness to meet the needs of different applications.

[0003] Existing corn flour milling equipment generally suffers from a high breakage rate in practical use, making it difficult to meet the demands of high-end processing. Most existing equipment uses a one-time grinding mode, unable to grade and grind corn based on differences in particle size and hardness. It can only perform a one-time compression grinding of the raw material at a fixed interval. Because the initial particle size of the corn is uneven, larger particles are excessively compressed and ground during one-time grinding, while smaller particles are repeatedly crushed, leading to excessive breakage of the corn flour particles. This damages the internal starch structure, affecting the texture and subsequent processing performance of the corn flour. Simultaneously, the continuous friction of the grinding rollers during the grinding process generates a large amount of heat, which can easily cause corn flour particle denaturation and breakage, and also cause the corn flour to clump together, further reducing product quality. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a corn flour grinding device that reduces the breakage of corn flour.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A corn flour grinding device for reducing corn flour breakage includes an equipment box with a feed inlet at the top. A second hollow shaft rotatably connected to the equipment box is threaded through it. An active grinding roller located inside the equipment box is fixedly installed on the outer wall of the second hollow shaft. A mounting frame located inside the equipment box is provided on one side of the active grinding roller. A third hollow shaft rotatably connected to the mounting frame is threaded through it. A passive grinding roller located inside the mounting frame is fixedly installed on the outer wall of the third hollow shaft. A drive mechanism is provided on the equipment box. A cooling water tank is provided at the top of the equipment box. Two sets of water-cooling mechanisms are provided on the equipment box. A spacing adjustment mechanism connected to the water-cooling mechanisms is provided on the equipment box.

[0007] Preferably, the drive mechanism includes a servo motor fixedly mounted on the outer wall of the equipment housing, the output shaft of the servo motor is fixedly connected to a first hollow shaft, a second gear is fixedly mounted on the outer wall of the first hollow shaft, a first gear is fixedly mounted on the outer wall of the second hollow shaft, the first gear and the second gear are meshed together, and a cam is fixedly mounted on the outer wall of the first hollow shaft.

[0008] Preferably, the water cooling mechanism includes a fixed plate fixedly installed on an outer wall of the equipment box. A water pumping box is fixedly installed on the side wall of the fixed plate near the cam. Two first connecting rods are slidably connected to the side wall of the water pumping box near the cam. The same water pumping piston is fixedly installed at one end of the two first connecting rods inside the water pumping box and is slidably connected to the inner wall of the water pumping box. The same movable plate that abuts against the cam is fixedly installed at one end of the two first connecting rods near the cam. Two first springs are fixedly connected between the movable plate and the end of the water pumping box.

[0009] Preferably, the water pump box is provided with a first water guide pipe and a second water guide pipe that are connected to its interior. The ends of the first water guide pipe and the second water guide pipe that are connected to the water pump box are both located on the side of the water pump piston away from the cam. A one-way valve is provided inside the first water guide pipe and the second water guide pipe.

[0010] Preferably, the ends of the two first water guide pipes away from their respective water pump boxes are connected to the cooling water tank, and a second rotary joint is respectively provided between one end of the second hollow shaft and the third hollow shaft and one end of the two second water guide pipes.

[0011] Preferably, the spacing adjustment mechanism includes a spacing adjustment box fixedly installed on the inner wall of one side of the equipment box. A second connecting rod is slidably connected to the side wall of the spacing adjustment box near the mounting frame. The end of the second connecting rod located outside the spacing adjustment box is fixedly connected to the mounting frame. Two telescopic rods are fixedly installed on the inner wall of one side of the equipment box. The telescopic ends of the two telescopic rods are fixedly connected to the mounting frame. A second adjusting piston is fixedly installed on the end of the second connecting rod located inside the spacing adjustment box and slidably connected to its inner wall.

[0012] Preferably, the cam has an inner cavity, and a second spring is fixedly connected to the end of the inner cavity away from the first hollow shaft. A first adjusting piston that is slidably connected to the inner wall of the inner cavity is fixedly connected to the end of the second spring. A connecting pipe that communicates with the interior of the first hollow shaft is provided on the first hollow shaft. The end of the connecting pipe that is away from the first hollow shaft is connected to the inner cavity. The end of the connecting pipe that communicates with the inner cavity is located between the first adjusting piston and the first hollow shaft. A through hole that communicates with the inner cavity is provided on the cam. The through hole is located on the side of the first adjusting piston away from the first hollow shaft. A liquid guide pipe that communicates with the interior of the spacing adjustment box is provided on the side of the second adjusting piston away from the mounting bracket. A third rotary joint is provided between the end of the liquid guide pipe away from the spacing adjustment box and the end of the first hollow shaft.

[0013] Preferably, a slag outlet is provided on one outer wall of the equipment box, located below the active grinding roller, and a powder outlet is provided on the other outer wall of the equipment box, located below the slag outlet. A filter plate is fixedly connected to one inner wall of the equipment box through the slag outlet, and a guide plate is fixedly connected to the other inner wall of the equipment box through the powder outlet. A third water guide pipe is provided on one side of both the second hollow shaft and the third hollow shaft, and a first rotary joint is provided between the other end of the second hollow shaft and the other end of the third hollow shaft and the two third water guide pipes.

[0014] The beneficial effects of this invention are: This invention enables flexible switching of the grinding distance to adapt to different processing needs of coarse and fine grinding, reducing the damage of corn flour. By adjusting the speed of the servo motor, the incompressible liquid filled in the gap adjustment box and the inner cavity of the cam flows, thereby controlling the distance between the two grinding rollers. No complicated operation is required, and the grinding mode can be switched according to processing needs, taking into account both processing flexibility and powder quality.

[0015] When the cam rotates at high speed, the first adjusting piston inside its inner cavity slides away from the first hollow shaft under the combined action of centrifugal force and the second spring. This causes the incompressible liquid in the spacing adjustment box to flow into the cam's inner cavity through the liquid guide pipe, the third rotary joint, the first hollow shaft, and the connecting pipe. At the same time, the second adjusting piston inside the spacing adjustment box slides away from the mounting bracket, driving the mounting bracket to move via the second connecting rod. This causes the passive grinding roller to move away from the active grinding roller, forming a large-gap coarse grinding.

[0016] In this invention, after reducing the servo motor speed, the first adjusting piston slides in the opposite direction under the reset action of the second spring, squeezing the incompressible liquid back to the spacing adjustment box, pushing the second adjusting piston closer to the mounting frame, and causing the passive grinding roller to approach the active grinding roller, forming a small-gap fine grinding. Gradually refining the powder can avoid excessive particle damage caused by one-time fine grinding, which can improve grinding efficiency and ensure the integrity of corn flour particles.

[0017] In the entire process of coarse and fine grinding, the present invention employs a water pumping box, a first water guide pipe, a second water guide pipe, a third water guide pipe, a first rotary joint, a second rotary joint, and a cooling water tank in cooperation. The water pumping piston, driven by the first connecting rod and the first spring, draws cooling water from the cooling water tank and sends it into the two hollow shafts through relevant pipelines and rotary joints. This cools the active and passive grinding rollers in real time, preventing the corn flour from breaking or sticking due to high temperature and improving the product qualification rate.

[0018] This invention can adjust the speed of the servo motor to drive the first hollow shaft and cam to rotate synchronously. Through the flow of incompressible liquid in the gap adjustment box and the inner cavity of the cam, the first adjustment piston and the second adjustment piston are driven to slide, thereby realizing the gap switching between the passive grinding roller and the active grinding roller, completing coarse grinding and fine grinding, avoiding excessive damage to the powder. During the coarse grinding and fine grinding process, cooling water is drawn by the water pumping piston and sent to the second hollow shaft and the third hollow shaft to realize real-time cooling of the passive grinding roller and the active grinding roller, preventing corn flour from being damaged and sticking due to high temperature, and effectively improving the product qualification rate. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of one side of a corn flour grinding device for reducing corn flour breakage according to the present invention. Figure 2 This is a three-dimensional structural diagram of the other side of a corn flour grinding device for reducing corn flour breakage proposed in this invention. Figure 3 This is a three-dimensional structural diagram of the water pump box after being cut along the center line of the present invention. Figure 4 This is a three-dimensional structural diagram of the present invention after being cut along the axis of the active grinding roller. Figure 5 This is a three-dimensional structural diagram of the present invention after being cut along the first hollow axis.

[0020] In the diagram: 1 Equipment box, 2 Feed inlet, 3 Cooling water tank, 4 First water guide pipe, 5 Fixed plate, 6 Water pumping box, 7 Second water guide pipe, 8 Liquid guide pipe, 9 Filter plate, 10 First gear, 11 Moving plate, 12 Cam, 13 Second gear, 14 Powder outlet, 15 Guide plate, 16 Slag outlet, 17 Third water guide pipe, 18 First rotary joint, 19 Servo motor, 20 Water pumping piston, 21 First connecting rod, 22 First spring, 23 First hollow shaft, 24 Inner cavity, 25 Second spring, 26 First adjusting piston, 27 Second rotary joint, 28 Second hollow shaft, 29 Active grinding roller, 30 Third hollow shaft, 31 Passive grinding roller, 32 Second adjusting piston, 33 Spacing adjustment box, 34 Telescopic rod, 35 Second connecting rod, 36 Mounting bracket, 37 Through hole, 38 Connecting pipe, 39 Third rotary joint. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] Reference Figures 1-5 A corn flour grinding device for reducing corn flour breakage includes an equipment box 1. The top of the equipment box 1 has an inlet 2. A second hollow shaft 28 is rotatably connected to the equipment box 1. An active grinding roller 29, located inside the equipment box 1, is fixedly mounted on the outer wall of the second hollow shaft 28. The active grinding roller 29 is the main power roller for the grinding action, and its surface is provided with grinding textures to enhance the crushing effect. A mounting bracket 36, located inside the equipment box 1, is provided on one side of the active grinding roller 29. A rotating part is rotatably connected to the mounting bracket 36. A third hollow shaft 30 is connected, and a passive grinding roller 31 located within a mounting bracket 36 is fixedly installed on the outer wall of the third hollow shaft 30. The passive grinding roller 31 rotates due to friction with the active grinding roller 29, and the two together form a grinding gap. A drive mechanism is provided on the equipment box 1, which includes a servo motor 19 fixedly installed on the outer wall of the equipment box 1. The output shaft of the servo motor 19 is fixedly connected to a first hollow shaft 23, and a second gear 13 is fixedly installed on the outer wall of the first hollow shaft 23. A second gear 13 is fixedly installed on the outer wall of the second hollow shaft 28. The first gear 10 meshes with the second gear 13. A cam 12 is fixedly installed on the outer wall of the first hollow shaft 23. A slag outlet 16 is provided on one side of the outer wall of the equipment box 1, located below the active grinding roller 29. The slag outlet 16 is used to discharge coarse residues such as corn husks and germs separated by the filter plate 9. A powder outlet 14 is provided on the other side of the outer wall of the equipment box 1, located below the slag outlet 16. A filter plate 9, fixedly connected to one side of the inner wall of the equipment box 1, is installed through the slag outlet 16. A powder outlet 14, connected to the inner wall of the equipment box 1, is installed through the powder outlet 14. A guide plate 15 is fixedly connected to the inner wall of the other side of the box 1. A third water guide pipe 17 is provided on one side of the second hollow shaft 28 and the third hollow shaft 30. The third water guide pipe 17 is used to discharge the cooling water whose temperature rises after flowing through the hollow shaft. It can be connected to the cooling water tank 3 to form a circulation. A first rotary joint 18 is provided between the other end of the second hollow shaft 28 and the other end of the third hollow shaft 30 and the two third water guide pipes 17. The first rotary joint 18 ensures that the hollow shaft is sealed and connected to the stationary third water guide pipe 17 in the rotating state to prevent cooling water leakage.

[0023] A cooling water tank 3 is installed on the top of the equipment box 1. Two sets of water-cooling mechanisms are installed on the equipment box 1. The two sets of water-cooling mechanisms are used to cool the active grinding roller 29 and the passive grinding roller 31 respectively to ensure that the temperature of the two is balanced. The water-cooling mechanism includes a fixed plate 5 fixedly installed on an outer wall of the equipment box 1. A water-drawing box 6 is fixedly installed on the side wall of the fixed plate 5 near the cam 12. Two first connecting rods 21 are slidably connected to the side wall of the water-drawing box 6 near the cam 12. The same water-drawing piston 20 is fixedly installed at one end of the two first connecting rods 21 inside the water-drawing box 6 and is slidably connected to the inner wall of the water-drawing box 6. The water-drawing piston 20 is sealed to the inner wall of the water-drawing box 6, and its reciprocating motion realizes water suction and water pressure. The same moving plate 11 is fixedly installed at one end of the two first connecting rods 21 near the cam 12 and abuts against the cam 12. Two first springs 22 are fixedly connected between the moving plate 11 and the water-drawing box 6. The water collection box 6 is equipped with a first water guide pipe 4 and a second water guide pipe 7 that are connected to its interior. The first water guide pipe 4 is used to draw water from the cooling water tank 3, and the second water guide pipe 7 is used to deliver water to the hollow shaft. The ends of the first water guide pipe 4 and the second water guide pipe 7 that are connected to the water collection box 6 are both located on the side of the water pumping piston 20 away from the cam 12. One-way valves are installed in both the first water guide pipe 4 and the second water guide pipe 7. The one-way valves ensure that the cooling water can only flow into the water collection box 6 from the first water guide pipe 4 and into the second water guide pipe 7 from the water collection box 6, preventing backflow. The ends of the two first water guide pipes 4 that are away from the water collection box 6 are connected to the cooling water tank 3. A second rotary joint 27 is provided between one end of the second hollow shaft 28 and the third hollow shaft 30 and one end of the two second water guide pipes 7, respectively. The second rotary joint 27 seals the rotating second hollow shaft 28 and the third hollow shaft 30 with the stationary second water guide pipes 7, ensuring that the cooling water can smoothly enter the shaft cavity.

[0024] The equipment box 1 is equipped with a spacing adjustment mechanism connected to the water cooling mechanism. The spacing adjustment mechanism utilizes the difference in centrifugal force generated by the different rotation speeds of the same cam 12 to drive the flow of incompressible liquid, thereby changing the spacing between the passive grinding roller 31 and the active grinding roller 29. The spacing adjustment mechanism includes a spacing adjustment box 33 fixedly installed on the inner wall of one side of the equipment box 1. A second connecting rod 35 is slidably connected to the side wall of the spacing adjustment box 33 near the mounting frame 36. The end of the second connecting rod 35 located outside the spacing adjustment box 33 is fixedly connected to the mounting frame 36. Two telescopic rods 34 are fixedly installed on the inner wall of one side of the equipment box 1. The telescopic ends of the two telescopic rods 34 are fixedly connected to the mounting frame 36. A second adjusting piston 32 is fixedly installed on the end of the second connecting rod 35 located inside the spacing adjustment box 33 and slidably connected to its inner wall. The cam 12 is provided with an inner cavity 24. A second spring 25 is fixedly connected to the end of the inner cavity 24 away from the first hollow shaft 23. One end of the second spring 25 is fixedly connected to the inner wall of the cam 12. A first adjusting piston 26 is fixedly connected to the inner wall of the inner cavity 24. A connecting pipe 38 is provided on the first hollow shaft 23 and communicates with its interior. The end of the connecting pipe 38 away from the first hollow shaft 23 is connected to the inner cavity 24. The end of the connecting pipe 38 connected to the inner cavity 24 is located between the first adjusting piston 26 and the first hollow shaft 23. A through hole 37 is provided on the cam 12 and communicates with the inner cavity 24. When the first adjusting piston 26 slides outward, the air behind the through hole 37 can freely enter and exit without affecting the movement of the first adjusting piston 26. The through hole 37 is located on the side of the first adjusting piston 26 away from the first hollow shaft 23. A liquid guide pipe 8 is provided on the side of the second adjusting piston 32 away from the mounting bracket 36 and communicates with the interior of the spacing adjustment box 33. A third rotary joint 39 is provided between the end of the liquid guide pipe 8 away from the spacing adjustment box 33 and the end of the first hollow shaft 23. The third rotary joint 39 ensures that the rotating first hollow shaft 23 is sealed and connected to the stationary liquid guide pipe 8 to realize dynamic liquid transmission.

[0025] When using this invention, the servo motor 19 is started, and the output shaft of the servo motor 19 is adjusted to a high-speed state. At this time, the first hollow shaft 23 rotates at high speed with the servo motor 19, driving the second gear 13 on the outer wall to mesh with the first gear 10 on the outer wall of the second hollow shaft 28, causing the second hollow shaft 28 and the active grinding roller 29 on the outer wall to rotate at high speed. The first hollow shaft 23 also drives the cam 12 to rotate synchronously at high speed. Since the side of the second adjusting piston 32 in the pitch adjusting box 33 away from the mounting bracket 36 and the side of the first adjusting piston 26 in the inner cavity 24 near the first hollow shaft 23 are both filled with incompressible liquid, when the cam 12 rotates at high speed, the inner cavity 24... Under the combined action of centrifugal force and the second spring 25, the first adjusting piston 26 slides away from the first hollow shaft 23, thereby causing the incompressible liquid in the spacing adjusting box 33 to enter the first hollow shaft 23 through the liquid guide pipe 8 and the third rotary joint 39, and then flow into the inner cavity 24 of the cam 12 through the connecting pipe 38. At this time, the liquid in the spacing adjusting box 33 decreases, and the second adjusting piston 32 slides away from the mounting bracket 36, thereby driving the mounting bracket 36 to move through the second connecting rod 35, so that the passive grinding roller 31 on the outer wall of the third hollow shaft 30 moves away from the active grinding roller 29, and the distance between the two rollers reaches the maximum, entering the coarse grinding mode.

[0026] The corn raw material is then fed into the feed port 2 at the top of the equipment box 1. The raw material falls between the active grinding roller 29 and the passive grinding roller 31. Under the high-speed rotation and large gap of the two rollers, coarse grinding is completed. After coarse grinding, the material becomes corn flour and a small amount of residue. The corn flour is screened by the filter plate 9 and discharged and collected through the flour outlet 14 and the guide plate 15. The residue is discharged through the residue outlet 16. The output shaft speed of the servo motor 19 is reduced, and the rotation speed of the cam 12 is slowed down. The centrifugal force on the first adjusting piston 26 in the inner cavity 24 is reduced. Under the reset action of the second spring 25, it slides towards the first hollow shaft 23, squeezing the incompressible liquid in the inner cavity 24. The liquid flows back into the gap adjusting box 33, and the liquid in the gap adjusting box 33 increases. This pushes the second adjusting piston 32 towards the mounting frame 36. The second connecting rod 35 drives the mounting frame 36 to move in the opposite direction, so that the passive grinding roller 31 moves closer to the active grinding roller 29. The gap between the two rollers becomes smaller, and the fine grinding mode is switched.

[0027] Next, the coarsely ground powder in the equipment box 1 is put back between the two grinding rollers. During the coarse and fine grinding processes, the cam 12 rotates and continuously squeezes the moving plate 11, causing the moving plate 11 to drive the two first connecting rods 21 to slide in the water pumping box 6. With the extension and retraction of the first spring 22, the water pumping piston 20 moves back and forth in the water pumping box 6. Cooling water is drawn from the cooling water tank 3 through the first water guide pipe 4, and then sent to the second hollow shaft 28 and the third hollow shaft 30 through the second water guide pipe 7 and the second rotary joint 27, respectively, to cool the active grinding roller 29 and the passive grinding roller 31 with water, reducing the damage to the corn flour caused by high temperature during the fine grinding process. Finally, the cooling water in the second hollow shaft 28 and the third hollow shaft 30 is discharged through the first rotary joint 18 and the third water guide pipe 17.

[0028] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A corn flour milling device for reducing corn flour breakage, comprising an equipment box (1), characterized in that, The top of the equipment box (1) is provided with a feed inlet (2). A second hollow shaft (28) is rotatably connected to the equipment box (1). An active grinding roller (29) located inside the equipment box (1) is fixedly installed on the outer wall of the second hollow shaft (28). A mounting frame (36) located inside the equipment box (1) is provided on one side of the active grinding roller (29). A third hollow shaft (30) rotatably connected to the mounting frame (36) is rotatably connected to the mounting frame (36). A passive grinding roller (31) located inside the mounting frame (36) is fixedly installed on the outer wall of the third hollow shaft (30). A drive mechanism is provided on the equipment box (1). A cooling water tank (3) is provided on the top of the equipment box (1). Two sets of water cooling mechanisms are provided on the equipment box (1). A spacing adjustment mechanism connected to the water cooling mechanism is provided on the equipment box (1).

2. The corn flour grinding device for reducing corn flour breakage according to claim 1, characterized in that, The drive mechanism includes a servo motor (19) fixedly installed on the outer wall of the equipment box (1). The output shaft of the servo motor (19) is fixedly connected to a first hollow shaft (23). A second gear (13) is fixedly installed on the outer wall of the first hollow shaft (23). A first gear (10) is fixedly installed on the outer wall of the second hollow shaft (28). The first gear (10) meshes with the second gear (13). A cam (12) is fixedly installed on the outer wall of the first hollow shaft (23).

3. The corn flour grinding device for reducing corn flour breakage according to claim 2, characterized in that, The water cooling mechanism includes a fixed plate (5) fixedly installed on an outer wall of the equipment box (1). A water pumping box (6) is fixedly installed on the side wall of the fixed plate (5) near the cam (12). Two first connecting rods (21) are slidably connected to the side wall of the water pumping box (6) near the cam (12). The same water pumping piston (20) is fixedly installed at one end of the two first connecting rods (21) inside the water pumping box (6) and is slidably connected to the inner wall of the water pumping box (6). The same moving plate (11) is fixedly installed at one end of the two first connecting rods (21) near the cam (12) and abuts against the cam (12). Two first springs (22) are fixedly connected between the moving plate (11) and the water pumping box (6).

4. A corn flour grinding device for reducing corn flour breakage according to claim 3, characterized in that, The water pump box (6) is provided with a first water guide pipe (4) and a second water guide pipe (7) that are connected to its interior. The ends of the first water guide pipe (4) and the second water guide pipe (7) that are connected to the water pump box (6) are located on the side of the water pump piston (20) away from the cam (12). A one-way valve is provided in both the first water guide pipe (4) and the second water guide pipe (7).

5. A corn flour grinding device for reducing corn flour breakage according to claim 4, characterized in that, The ends of the two first water guide pipes (4) away from the water pump box (6) are connected to the cooling water tank (3), and the ends of the second hollow shaft (28) and the third hollow shaft (30) are respectively provided with second rotary joints (27) between the ends of the two second water guide pipes (7).

6. A corn flour grinding device for reducing corn flour breakage according to claim 5, characterized in that, The spacing adjustment mechanism includes a spacing adjustment box (33) fixedly installed on the inner wall of one side of the equipment box (1). A second connecting rod (35) is slidably connected to the side wall of the spacing adjustment box (33) near the mounting frame (36). The end of the second connecting rod (35) located outside the spacing adjustment box (33) is fixedly connected to the mounting frame (36). Two telescopic rods (34) are fixedly installed on the inner wall of one side of the equipment box (1). The telescopic ends of the two telescopic rods (34) are fixedly connected to the mounting frame (36). A second adjusting piston (32) is fixedly installed on the end of the second connecting rod (35) located inside the spacing adjustment box (33) and slidably connected to its inner wall.

7. A corn flour grinding device for reducing corn flour breakage according to claim 6, characterized in that, The cam (12) has an inner cavity (24). A second spring (25) is fixedly connected to one end of the inner cavity (24) away from the first hollow shaft (23). A first adjusting piston (26) is fixedly connected to one end of the second spring (25) and slidably connected to the inner wall of the inner cavity (24). A connecting pipe (38) communicating with the interior of the first hollow shaft (23) is provided on the first hollow shaft (23). One end of the connecting pipe (38) away from the first hollow shaft (23) is connected to the inner cavity (24). The end of the connecting pipe (38) communicating with the inner cavity (24) is located at the first... Between an adjusting piston (26) and a first hollow shaft (23), a through hole (37) communicating with the inner cavity (24) is provided on the cam (12). The through hole (37) is located on the side of the first adjusting piston (26) away from the first hollow shaft (23). A liquid guide tube (8) communicating with the inside of the spacing adjustment box (33) is provided on the side of the second adjusting piston (32) away from the mounting bracket (36). A third rotary joint (39) is provided between the end of the liquid guide tube (8) away from the spacing adjustment box (33) and the end of the first hollow shaft (23).

8. A corn flour grinding device for reducing corn flour breakage according to claim 1, characterized in that, A slag outlet (16) located below the active grinding roller (29) is provided on one side of the outer wall of the equipment box (1), and a powder outlet (14) located below the slag outlet (16) is provided on the other side of the outer wall of the equipment box (1). A filter plate (9) fixedly connected to one side of the inner wall of the equipment box (1) is provided through the slag outlet (16), and a guide plate (15) fixedly connected to the other side of the inner wall of the equipment box (1) is provided through the powder outlet (14). A third water guide pipe (17) is provided on one side of the second hollow shaft (28) and the third hollow shaft (30). A first rotary joint (18) is provided between the other end of the second hollow shaft (28) and the other end of the third hollow shaft (30) and the two third water guide pipes (17).

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