Shearing type rubber pulverizer and control system thereof

Abstract

This invention belongs to the technical field of rubber grinding mills, specifically a shear-type rubber grinding mill and its control system. It includes a frame, a grinding chamber fixedly connected to one side of the upper end of the frame, a material discharge chute on one side of the bottom of the grinding chamber, a feed hopper at the upper end of the grinding chamber, a feed channel on one side of the feed hopper, a driven shaft rotatably mounted on one side of the inner cavity of the grinding chamber, a grinding shaft fixedly connected to one end of the driven shaft, and multiple moving blade pressure plates fixedly connected circumferentially along the grinding shaft. Moving blades are mounted on one side of the moving blade pressure plates via blade adjustment bolts. This invention utilizes a self-cleaning metal impurity adsorption component, which uses multiple electromagnets to adsorb metal impurities in the rubber particles in real time during the grinding process. The adsorbed metal impurities no longer contact the blades, thus avoiding blade damage caused by collisions between metal impurities and the blades, which would affect the blade's service life.

Description

Technical Field

[0001] This invention belongs to the technical field of rubber grinding mills, specifically a shear-type rubber grinding mill and its control system. Background Technology

[0002] A shear-type rubber pulverizer is a device used to mechanically grind rubber granules, such as those from pre-treated waste tires and rubber flooring, into rubber powders of varying fineness. The ground rubber powder can be used to produce plastic running tracks and floor mats, or to modify asphalt, or it can be mixed with virgin rubber to manufacture various rubber products.

[0003] When grinding rubber granules, some granules may contain magnetic metal impurities, such as steel wires or iron sheets. During the grinding process, the cutting tool collides with these metal impurities, which can easily damage the tool and affect its service life. In addition, metal impurities may remain in the ground rubber powder, reducing the purity of the powder and making it unsuitable for subsequent reuse. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, the present invention proposes a shear-type rubber grinding mill and its control system.

[0005] The technical solution adopted by the present invention to solve its technical problem is as follows: a shearing rubber pulverizer, including a frame, a grinding box fixedly connected to one side of the upper end of the frame, a material discharge chute provided on one side of the bottom of the grinding box, a feeding hopper provided at the upper end of the grinding box, a feeding channel provided on one side of the feeding hopper, a driven shaft rotatably provided on one side of the inner cavity of the grinding box, a grinding shaft fixedly connected to one end of the driven shaft, a plurality of moving blade pressure plates fixedly connected to the upper circumferential direction of the grinding shaft, a moving blade provided on one side of the moving blade pressure plate through a blade adjusting bolt, a screen fixedly connected to one side of the bottom of the feeding channel, the grinding shaft located in the inner cavity of the screen, and a plurality of rows of screen holes provided on the upper circumferential direction of the screen; Including self-cleaning metal impurity adsorption components; The self-cleaning metal impurity adsorption assembly includes multiple electromagnets, which are uniformly rotated around the grinding shaft. A vacuum cleaner is fixedly connected to one side of the upper end of the frame. The air inlet of the vacuum cleaner is connected to an air inlet cylinder. The outer wall of the air inlet cylinder slides against the inner wall of the driven shaft. One side of the air inlet cylinder is located in the inner cavity of the grinding shaft. Multiple through holes are provided on the upper part of the air inlet cylinder around the circumference.

[0006] Preferably, a protective cover is fixedly connected to one side of the upper end of the frame, the vacuum cleaner is located in the inner cavity of the protective cover, a motor is fixedly connected to one side of the upper end of the frame, the output end of the motor is fixedly connected to a drive shaft through a coupling, a gear two is fixedly sleeved on one end of the drive shaft, and a gear three is fixedly sleeved on one side of the driven shaft, and the gear two and the gear three mesh with each other.

[0007] Preferably, the screen is provided with an upper fixed knife holder plate, a feed knife holder plate, and a lower fixed knife holder plate along its circumferential direction. Fixed knife one, fixed knife three, and fixed knife two are respectively provided on the upper fixed knife holder plate, the feed knife holder plate, and the lower fixed knife holder plate through fixed knife adjusting bolts.

[0008] Preferably, multiple motors are evenly distributed and fixedly installed on the grinding shaft along the circumference, and the output end of each motor is fixedly connected to one end of an electromagnet.

[0009] Preferably, it includes an integrated component for unblocking and secondary adsorption; The integrated unblocking and secondary adsorption component includes an arc-shaped shell fixedly connected to one side of the inner wall of the grinding chamber. A slide rail is fixedly connected to one side of the inner wall of the arc-shaped shell. A slider is slidably mounted on the slide rail. Two connecting rods are rotatably mounted on one side of the slider. A connecting rod is rotatably mounted at one end of each connecting rod. A connecting plate is rotatably mounted at one end of each connecting rod. Multiple unblocking rods are fixedly connected at equal intervals on one side of the connecting plate. An electromagnet is mounted at the end of each unblocking rod. The unblocking rods are matched with the specifications of the sieve holes.

[0010] Preferably, a motor four is fixedly connected to one side of the slider, and the output end of the motor four is fixedly connected to one end of the connecting rod two.

[0011] Preferably, a gear is rotatably provided on one side of the slider, and multiple tooth blocks are provided circumferentially on one side of the inner wall of the arc-shaped shell, and the tooth blocks mesh with the gear.

[0012] Preferably, a second motor is fixedly connected to one side of the slider, and the output end of the second motor is fixedly connected to a first gear.

[0013] Preferably, a maintenance door is provided on one side of the grinding box.

[0014] A shear-type rubber grinding mill control system, the control system includes a controller, the controller being electrically connected to motor one, motor two, motor three, motor four, a vacuum cleaner, electromagnet one, and electromagnet two respectively; The controller is used to control motor one to drive the grinding shaft to rotate in order to perform grinding operations; the controller is used to control multiple electromagnets two to be energized in order to adsorb metal impurities in rubber particles; the controller is also used to control the corresponding motor three to drive the electromagnet two to rotate when each electromagnet two rotates to a preset position, and to control the vacuum cleaner to start in order to pick up the metal impurities on the surface of the electromagnet two. The controller is also used to control motors two and four to drive multiple unblocking rods to intermittently pass through the sieve holes to unblock the sieve holes, and to control electromagnet one to be energized to adsorb metal impurities at the sieve holes.

[0015] The beneficial effects of this invention are as follows: 1. The shear-type rubber pulverizer and its control system described in this invention utilize a self-cleaning metal impurity adsorption component. During the pulverizing process, multiple electromagnets adsorb metal impurities from rubber particles in real time. Once adsorbed, the metal impurities no longer contact the cutting tools, thus avoiding tool damage caused by collisions and affecting tool life. Simultaneously, it avoids the problem of residual metal impurities in the ground rubber powder, which affects powder purity and hinders subsequent reuse. Furthermore, after each period of operation, the adsorption surface of the electromagnets rotates into the inner cavity of the pulverizing shaft. Subsequently, a vacuum cleaner removes the metal impurities from the surface of the electromagnets, achieving self-cleaning of the adsorption surface without stopping the machine. This ensures that the surface of the electromagnets always has sufficient area for adsorbing metal impurities, further improving the adsorption efficiency.

[0016] 2. The shear-type rubber pulverizer and its control system described in this invention utilize an integrated unblocking and secondary adsorption component. During the pulverizing process, multiple unblocking rods are intermittently aligned with multiple rows of sieve holes. Each time a unblocking rod aligns with a row of sieve holes, multiple rods simultaneously pass through that row, pushing the rubber particles blocked at the sieve holes into the inner cavity of the sieve mesh for further pulverization until they can pass smoothly through the sieve holes. This avoids the situation where rubber particles get stuck or blocked at the sieve holes, thus preventing subsequent rubber particles from passing through. Furthermore, when the unblocking rod passes through the sieve hole, the electromagnet at the end of the rod is energized, which can attract the metal impurities stuck in the sieve hole. The end of the unblocking rod will pause briefly as it passes through the sieve hole. When another electromagnet passes through the end of the unblocking rod, the first electromagnet stops being energized. The metal impurities are instantly attracted by the second electromagnet as they detach from the first electromagnet. This skips the process of the metal impurities mixing with the other rubber particles again and being attracted by the second electromagnet, further improving the efficiency of metal impurity adsorption and collection. This avoids the situation where metal impurities are stuck in the sieve hole and cannot be effectively attracted by the second electromagnet. In the subsequent unblocking of the sieve hole, the metal impurities fall out with the rubber particles, resulting in the collected rubber particles still containing metal impurities. Attached Figure Description

[0017] The invention will now be further described with reference to the accompanying drawings.

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the internal three-dimensional structure of the grinding chamber; Figure 3 This is a schematic diagram of the three-dimensional structure of the screen. Figure 4 This is a schematic diagram of the three-dimensional structure of the moving blade pressure plate. Figure 5 This is a schematic diagram of the three-dimensional structure at the connecting plate. Figure 6 This is a schematic diagram of the three-dimensional structure of the unblocking rod; Figure 7 This is a schematic diagram of the internal three-dimensional structure of the protective cover; Figure 8 This is a schematic diagram of the three-dimensional structure of the electromagnet at two locations; Figure 9 yes Figure 8 Enlarged view of a portion of point A in the middle; Figure 10 This is a 3D structural diagram of the vacuum cleaner.

[0019] In the diagram: 1. Motor 1; 2. Protective cover; 3. Inspection door panel; 4. Feed hopper; 5. Grinding box; 6. Frame; 7. Feed channel; 8. Arc-shaped shell; 9. Screen; 10. Slide rail; 11. Gear block; 12. Unblocking rod; 13. Electromagnet 1; 14. Connecting plate; 15. Connecting rod 1; 16. Connecting rod 2; 17. Sliding block; 18. Motor 4; 19. Gear 1; 20. Motor 2; 21. Moving blade pressure plate; 22. Moving blade; 23. Fixed blade 1; 24. Lower fixed blade holder plate; 25. Fixed blade 2; 26. Tool adjusting bolt; 27. Fixed blade adjusting bolt; 28. Air inlet; 29. ​​Driven shaft; 30. Vacuum cleaner; 31. Drive shaft; 32. Gear 2; 33. Gear 3; 34. Electromagnet 2; 35. Motor 3; 36. Upper fixed blade holder plate; 37. Feeding blade holder plate; 38. Fixed blade 3; 39. Grinding shaft; 40. Through hole; 41. Material discharge chute. Detailed Implementation

[0020] The technical solution of the present invention will now be clearly and completely described 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.

[0021] Please refer to Figures 1-10The present invention provides a technical solution: a shearing rubber pulverizer, including a frame 6, a grinding box 5 fixedly connected to one side of the upper end of the frame 6, a material discharge chute 41 provided on one side of the bottom of the grinding box 5, a feeding hopper 4 provided at the upper end of the grinding box 5, a feeding channel 7 provided on one side of the feeding hopper 4, a driven shaft 29 rotatably provided on one side of the inner cavity of the grinding box 5, a grinding shaft 39 fixedly connected to one end of the driven shaft 29, a plurality of moving blade pressure plates 21 fixedly connected to the upper circumferential direction of the grinding shaft 39, a moving blade 22 provided on one side of the moving blade pressure plate 21 through a blade adjusting bolt 26, a screen 9 fixedly connected to one side of the bottom of the feeding channel 7, the grinding shaft 39 located in the inner cavity of the screen 9, and a plurality of rows of screen holes provided on the upper circumferential direction of the screen 9; Including self-cleaning metal impurity adsorption components; The self-cleaning metal impurity adsorption component includes multiple electromagnets 34, which are uniformly rotated around the grinding shaft 39. A vacuum cleaner 30 is fixedly connected to one side of the upper end of the frame 6. The air inlet of the vacuum cleaner 30 is connected to an air inlet cylinder 28. The outer wall of the air inlet cylinder 28 slides against the inner wall of the driven shaft 29. One side of the air inlet cylinder 28 is located in the inner cavity of the grinding shaft 39. Multiple through holes 40 are provided around the air inlet cylinder 28.

[0022] In this embodiment, as Figure 3 , Figures 7-10 As shown, a protective cover 2 is fixedly connected to one side of the upper end of the frame 6. The vacuum cleaner 30 is located inside the protective cover 2. A motor 1 is fixedly connected to one side of the upper end of the frame 6. The output end of the motor 1 is fixedly connected to a drive shaft 31 through a coupling. A gear 2 32 is fixedly sleeved on one end of the drive shaft 31. A gear 33 is fixedly sleeved on one side of the driven shaft 29. The gear 2 32 and the gear 33 mesh with each other.

[0023] The screen 9 is provided with an upper fixed knife holder plate 36, a feed knife holder plate 37, and a lower fixed knife holder plate 24 along its circumferential direction. Fixed knife one 23, fixed knife three 38, and fixed knife two 25 are respectively provided on the upper fixed knife holder plate 36, feed knife holder plate 37, and lower fixed knife holder plate 24 through fixed knife adjusting bolts 27.

[0024] Multiple motors 35 are evenly distributed and fixedly installed along the circumference of the grinding shaft 39. The output end of the motors 35 is fixedly connected to one end of the electromagnet 2 34.

[0025] Specifically, in existing technologies, during the grinding of rubber granules, some granules may contain magnetic metallic impurities, such as steel wires or iron sheets. During the grinding process, the cutting tool collides with these metallic impurities, easily causing tool breakage and affecting its service life. Furthermore, metallic impurities may remain in the ground rubber powder, reducing its purity and hindering subsequent reuse.

[0026] Therefore, in order to solve the above problems, the working principle of this embodiment is as follows: The position of the moving blade 22 can be adjusted by the blade adjusting bolt 26; the positions of the three fixed blade adjusting bolts 27 can be adjusted by the fixed blade one 23, fixed blade two 25, and fixed blade three 38 respectively, thereby adjusting the gap between the moving and fixed blades to meet different grinding requirements.

[0027] The rubber granules to be ground are fed through the feed channel 7 above the feed hopper 4, and the granules fall between the grinding shaft 39 and the screen 9. At this time, the drive shaft 31 can be rotated by the motor 1, which in turn drives the grinding shaft 39 to rotate under the transmission of the gears 2 32 and 3 33. When the grinding shaft 39 rotates, multiple moving blades 22 cooperate with fixed blades 1 23, 2 5, and 3 38 to grind the rubber granules. At the same time, multiple electromagnets 2 34 are energized simultaneously. During the grinding process, metallic impurities in the granules are adsorbed onto the surface of each electromagnet 2 34.

[0028] When the particle size is smaller than the sieve openings, the rubber particles will fall through multiple sieve openings and into the designated collection location via the discharge chute 41. Throughout the grinding process, because the metallic impurities in the particles are adsorbed onto the surface of each electromagnet 34, the metallic impurities will not directly contact the cutting tools. This avoids damage to the cutting tools due to collisions between metallic impurities and the tools, thus preventing a decrease in tool life. Simultaneously, it also avoids the problem of residual metallic impurities in the ground rubber powder, which could affect the purity of the powder and hinder subsequent reuse.

[0029] In the above scheme, although electromagnet 234 can be used to continuously adsorb metal impurities, when the grinding cycle is long and rubber particles are continuously added, the metal impurities adsorbed on the surface of electromagnet 234 will gradually increase, and the adsorption area of ​​electromagnet 234 will gradually decrease, thus affecting the subsequent adsorption effect; if the machine is stopped to clean electromagnet 234, it will affect the normal operation of the grinding work.

[0030] Therefore, to solve this problem, whenever electromagnet 2 34 moves to its lowest position, the corresponding motor 3 35 will rotate it 180 degrees, so that the adsorption surface of electromagnet 2 34 faces the inner cavity of the grinding shaft 39. Furthermore, since the rubber particles attached to the surface of electromagnet 2 34 will detach when it is at its lowest position, the rubber particles will not enter the inner cavity of the grinding shaft 39 when the adsorption surface of electromagnet 2 34 rotates into it. At this time, the power supply to electromagnet 2 34 is stopped, and the vacuum cleaner 30 is started. The negative pressure suction will draw the metal impurities on the surface of electromagnet 2 34 through the through hole 40 into the inner cavity of the air inlet 28 and into the dust collection box of the vacuum cleaner 30. Moreover, since the air inlet 28 slides against the inner wall of the driven shaft 29, the rotating driven shaft 29 will not affect the air inlet 28. Then repeat the above operation. After the electromagnet 2 34 has been working for a period of time, its adsorption surface will be transferred into the inner cavity of the grinding shaft 39. Then, the vacuum cleaner 30 will suck up the metal impurities on the surface of the electromagnet 2 34. This can achieve self-cleaning of the adsorption surface of the electromagnet 2 34 without stopping the machine, so that the surface of the electromagnet 2 34 always has sufficient area to adsorb metal impurities, further improving the adsorption efficiency of metal impurities.

[0031] In this embodiment, as Figure 2 , Figure 5 , Figure 6 As shown, it includes an integrated component for unblocking and secondary adsorption; The integrated unblocking and secondary adsorption component includes an arc-shaped shell 8 fixedly connected to one side of the inner wall of the grinding box 5. A slide rail 10 is fixedly connected to one side of the inner wall of the arc-shaped shell 8. A slider 17 is slidably mounted on the slide rail 10. Two connecting rods 16 are rotatably mounted on one side of the slider 17. A connecting rod 15 is rotatably mounted at one end of the connecting rod 16. A connecting plate 14 is rotatably mounted at one end of the connecting rod 15. Multiple unblocking rods 12 are fixedly connected at equal intervals on one side of the connecting plate 14. An electromagnet 13 is mounted at the end of the unblocking rod 12. The unblocking rod 12 is matched with the sieve hole specifications.

[0032] A motor 18 is fixedly connected to one side of slider 17, and the output end of motor 18 is fixedly connected to one end of connecting rod 16.

[0033] A gear 19 is rotatably mounted on one side of the slider 17, and multiple tooth blocks 11 are circumferentially mounted on one side of the inner wall of the arc-shaped shell 8, with the tooth blocks 11 meshing with the gear 19.

[0034] A motor 20 is fixedly connected to one side of slider 17, and the output end of motor 20 is fixedly connected to gear 19.

[0035] Specifically, in the above embodiments, during the grinding process, rubber particles are prone to getting stuck in the sieve holes or clogging the sieve holes, thus affecting the subsequent passage of rubber particles. Furthermore, although the adsorption of metal impurities in the rubber particles can be achieved, when metal impurities are stuck in the sieve holes along with the rubber particles, the magnetic force of electromagnet 234 may be insufficient to effectively remove the metal impurities. When the sieve holes are cleared, the metal impurities stuck in the sieve holes will fall out along with the rubber particles, resulting in the collected rubber particles still containing metal impurities.

[0036] Therefore, in order to solve the above problems, the working principle of this embodiment is as follows: During the grinding process, motor 20 drives gear 19 to rotate. Through the transmission between gear 19 and toothed block 11, slider 17 slides on slide rail 10, causing it to move in a circular motion along the arc-shaped shell 8. This allows multiple unblocking rods 12 to intermittently align with multiple rows of sieve holes. Each time an unblocking rod 12 aligns with a row of sieve holes, motor 4 drives connecting rod 16 and connecting rod 15 to rotate, causing multiple unblocking rods 12 to simultaneously pass through a row of sieve holes. This pushes the rubber particles blocked in the sieve holes into the inner cavity of the screen 9 for further grinding until they can pass through the sieve holes smoothly. This avoids the situation where rubber particles get stuck or blocked in the sieve holes, thus preventing subsequent rubber particles from passing through. Furthermore, when the unblocking rod 12 passes through the sieve hole, the electromagnet 13 at the end of the unblocking rod 12 is energized, which can attract metal impurities stuck in the sieve hole. The end of the unblocking rod 12 pauses briefly after passing through the sieve hole. When an electromagnet 34 passes through the end of the unblocking rod 12, the electromagnet 13 stops being energized. The metal impurities are instantly attracted by the electromagnet 34 as they detach from the electromagnet 13, thus skipping the process of the metal impurities mixing with the other rubber particles again and being attracted by the electromagnet 34, further improving the adsorption and collection efficiency of metal impurities. In addition, the displacement distance of the unblocking rod 12 when passing through the sieve hole is controlled within a reasonable range and will not interfere with the cutting tool. This avoids the situation where metal impurities are stuck in the sieve hole and are difficult to be effectively attracted by the electromagnet 34, and then fall out with the rubber particles during subsequent sieve unblocking, resulting in the collected rubber particles still containing metal impurities.

[0037] In this embodiment, as Figure 1 As shown, a maintenance door panel 3 is provided on one side of the grinding box 5.

[0038] Specifically, by opening the inspection door 3, the internal structure of the grinding chamber 5 can be exposed, which facilitates the inspection and maintenance of the internal structure of the grinding chamber 5.

[0039] A control system for a shear-type rubber pulverizer includes a controller, which is electrically connected to motor 1, motor 20, motor 35, motor 4 18, vacuum cleaner 30, electromagnet 13, and electromagnet 2 34. The controller is used to control the motor 1 to drive the grinding shaft 39 to rotate to perform grinding operations; the controller is used to control multiple electromagnets 34 to be energized to adsorb metal impurities in rubber particles; the controller is also used to control the corresponding motor 35 to drive the electromagnet 34 to rotate when each electromagnet 34 rotates to a preset position, and to control the vacuum cleaner 30 to start to suck up the metal impurities on the surface of the electromagnet 34. The controller is also used to control motor 20 and motor 4 18 to drive multiple unclogging rods 12 to intermittently pass through the sieve holes to unclog the sieve holes, and to control electromagnet 13 to be energized to adsorb metal impurities at the sieve holes.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shearing rubber pulverizer comprising a frame (6), characterized in that: A grinding box (5) is fixedly connected to one side of the upper end of the frame (6). A material drop chute (41) is provided on one side of the bottom of the grinding box (5). A feed hopper (4) is provided at the upper end of the grinding box (5). A feed channel (7) is provided on one side of the feed hopper (4). A driven shaft (29) is rotatably provided on one side of the inner cavity of the grinding box (5). A grinding shaft (39) is fixedly connected to one end of the driven shaft (29). Multiple moving blade pressure plates (21) are fixedly connected to the upper edge of the grinding shaft (39) along the circumferential direction. A moving blade (22) is provided on one side of the moving blade pressure plate (21) through a blade adjusting bolt (26). A screen (9) is fixedly connected to one side of the bottom of the feed channel (7). The grinding shaft (39) is located in the inner cavity of the screen (9). Multiple rows of screen holes are provided on the upper edge of the screen (9) along the circumferential direction. Including self-cleaning metal impurity adsorption components; The self-cleaning metal impurity adsorption assembly includes multiple electromagnets (34), which are uniformly rotated around the grinding shaft (39). A vacuum cleaner (30) is fixedly connected to one side of the upper end of the frame (6). The air inlet of the vacuum cleaner (30) is connected to an air inlet cylinder (28). The outer wall of the air inlet cylinder (28) slides against the inner wall of the driven shaft (29). One side of the air inlet cylinder (28) is located in the inner cavity of the grinding shaft (39). Multiple through holes (40) are provided around the air inlet cylinder (28).

2. The shearing rubber pulverizer according to claim 1, characterized in that: A protective cover (2) is fixedly connected to one side of the upper end of the frame (6). The vacuum cleaner (30) is located in the inner cavity of the protective cover (2). A motor (1) is fixedly connected to one side of the upper end of the frame (6). The output end of the motor (1) is fixedly connected to a drive shaft (31) through a coupling. A gear (32) is fixedly sleeved on one end of the drive shaft (31). A gear (33) is fixedly sleeved on one side of the driven shaft (29). The gear (32) and the gear (33) mesh with each other.

3. A shear-type rubber grinding mill according to claim 1, characterized in that: The screen (9) is provided with an upper fixed knife holder plate (36), a feed knife holder plate (37), and a lower fixed knife holder plate (24) along the circumferential direction. The upper fixed knife holder plate (36), the feed knife holder plate (37), and the lower fixed knife holder plate (24) are respectively provided with a fixed knife one (23), a fixed knife three (38), and a fixed knife two (25) through a fixed knife adjusting bolt (27).

4. A shear-type rubber grinding mill according to claim 1, characterized in that: Multiple motors (35) are evenly distributed and fixedly installed on the grinding shaft (39) along the circumference. The output end of the motors (35) is fixedly connected to one end of the electromagnet (34).

5. A shear-type rubber grinding mill according to claim 1, characterized in that: Includes an integrated component for unblocking and secondary adsorption; The integrated unblocking and secondary adsorption component includes an arc-shaped shell (8) fixedly connected to one side of the inner wall of the grinding box (5). A slide rail (10) is fixedly connected to one side of the inner wall of the arc-shaped shell (8). A slider (17) is slidably arranged on the slide rail (10). Two connecting rods (16) are rotatably arranged on one side of the slider (17). A connecting rod (15) is rotatably arranged at one end of the connecting rod (16). A connecting plate (14) is rotatably arranged at one end of the connecting rod (15). Multiple unblocking rods (12) are fixedly connected at equal intervals on one side of the connecting plate (14). An electromagnet (13) is arranged at the end of the unblocking rod (12). The unblocking rod (12) matches the sieve hole specifications.

6. A shear-type rubber grinding mill according to claim 5, characterized in that: A motor four (18) is fixedly connected to one side of the slider (17), and the output end of the motor four (18) is fixedly connected to one end of the connecting rod two (16).

7. A shear-type rubber grinding mill according to claim 5, characterized in that: The slider (17) is rotatably provided with a gear (19) on one side, and a plurality of tooth blocks (11) are provided circumferentially on one side of the inner wall of the arc-shaped shell (8), and the tooth blocks (11) mesh with the gear (19).

8. A shear-type rubber grinding mill according to claim 5, characterized in that: A second motor (20) is fixedly connected to one side of the slider (17), and the output end of the second motor (20) is fixedly connected to a first gear (19).

9. A shear-type rubber grinding mill according to claim 1, characterized in that: A maintenance door (3) is provided on one side of the grinding box (5).

10. A control system for a shear-type rubber grinding mill, used in any one of claims 1 to 9, characterized in that: The control system includes a controller, which is electrically connected to motor one (1), motor two (20), motor three (35), motor four (18), vacuum cleaner (30), electromagnet one (13) and electromagnet two (34), respectively. The controller is used to control motor one (1) to drive the grinding shaft (39) to rotate to perform grinding operations; the controller is used to control multiple electromagnets two (34) to be energized to adsorb metal impurities in rubber particles; the controller is also used to control the corresponding motor three (35) to drive the electromagnet two (34) to rotate when each electromagnet two (34) rotates to a preset position, and to control the vacuum cleaner (30) to start to suck up the metal impurities on the surface of the electromagnet two (34); The controller is also used to control motor two (20) and motor four (18) to drive multiple unblocking rods (12) to pass through the sieve holes intermittently to unblock the sieve holes, and to control electromagnet one (13) to be energized to adsorb metal impurities at the sieve holes.

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