A rubber granule processing device for recycled rubber

Abstract

This invention discloses a rubber granule processing device for recycled rubber, belonging to the field of rubber processing devices. It includes a crushing chamber and a cooling assembly. The cooling assembly includes an air supply pipe fixedly installed on the top wall of the inner cavity of the crushing chamber. A hollow rod is rotatably installed at one end of the air supply pipe, and the hollow rod is internally connected to the air supply pipe. Crushing blades are uniformly fixedly installed on the wall of the hollow rod, and exhaust holes are uniformly opened on the side wall of the hollow rod. Each set of exhaust holes faces the top and bottom of the adjacent crushing blades. Two sets of arc-shaped guide plates are fixedly installed on the back of each set of crushing blades. A filter screen is fixedly installed inside the crushing chamber, and a fixing column is fixedly installed on the filter screen. This device can achieve air cooling and anti-sticking in the cutting zone and blade-assisted crushing, effectively solving the problems of rubber softening at high temperatures, sticking to the blade, and scorching, significantly improving blade life and particle purity.

Description

Technical Field

[0001] This invention relates to the field of rubber processing equipment, and more specifically, to an apparatus for processing rubber granules for recycled rubber. Background Technology

[0002] The core objective of the recycled rubber industry is to transform waste rubber into recycled rubber granules with plasticity and viscosity, and then produce recycled rubber that can replace virgin rubber through desulfurization. In this industrial chain, special scraps, represented by pure rubber strips and sealing strip waste from tire factories, are considered ideal raw materials for preparing high-quality rubber granules because they do not contain metals and fibers. The existing processing flow usually involves crushing large scraps with a crusher, then screening them to obtain rubber granules with uniform particle size. These granules are then sent to a desulfurization tank for high-temperature and high-pressure treatment.

[0003] However, in the actual scenario of preparing rubber granules from special scraps, due to the high elasticity, high toughness and poor thermal conductivity of this type of rubber, traditional crushing equipment is prone to generating frictional heat accumulation during high-speed cutting, causing the material temperature to soar. The softened rubber not only adheres to the blade assembly but also forms a smear on the screen. Furthermore, it agglomerates during the extrusion process, resulting in the production of not well-dispersed independent particles, but rather lumps or blocks of rubber of varying sizes with adhered surfaces. This adhesion and smearing directly cause blockage of the screening channel, preventing qualified particles from being discharged in time and forcing them to be repeatedly ground inside the cavity. This not only causes serious loss of control over particle size distribution and the mixing of a large number of oversized particles, but also leads to scorching of the material surface due to the further superposition of frictional heat. Summary of the Invention

[0004] To address the problems existing in the prior art, the present invention aims to provide a rubber granule processing device for recycled rubber, which can achieve air cooling and anti-sticking in the cutting zone and blade-assisted crushing, effectively solving the problems of rubber softening and sticking to the blade and scorching at high temperatures, and significantly improving tool life and granule purity.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A device for processing rubber granules for recycled rubber includes a crushing chamber. Also includes: A cooling assembly includes an air supply pipe fixedly installed on the top wall of the inner cavity of the crushing chamber. A hollow rod is rotatably installed at one end of the air supply pipe, and the hollow rod is connected to the inner cavity of the air supply pipe. Crushing blades are evenly fixedly installed on the wall of the hollow rod, and exhaust holes are evenly opened on the side wall of the hollow rod. Each set of exhaust holes is directly opposite the top and bottom of the adjacent crushing blades. Two sets of arc-shaped guide plates are fixedly installed on the back of each set of crushing blades. A filter screen is fixedly installed in the inner cavity of the crushing chamber, and a fixed column is fixedly installed on the filter screen. A conical frame is fixedly installed on the outer wall of the fixed column. A rotating rod is fixedly installed at the bottom end of the hollow rod, and the rotating rod is rotatably installed with the fixed column and the conical frame. A motor is fixedly installed at the bottom end of the conical frame, and the output shaft of the motor is fixedly installed with the bottom end of the rotating rod. A material return assembly is provided on one side of the crushing chamber.

[0007] Furthermore, the material return assembly includes two sets of mounting plates fixedly installed on one side of the crushing box. Each set of mounting plates has a fixing plate on its opposite side. Both sets of fixing plates are fixedly installed to the crushing box. Two sets of rotating rollers are rotatably installed between the two sets of mounting plates. A conveyor belt is driven between the two sets of rotating rollers. A second motor is fixedly installed on the rear wall of the rear mounting plate. The output shaft of the second motor is fixedly installed with the rotating shaft on one of the sets of rotating rollers.

[0008] Furthermore, conveyor plates are uniformly fixedly installed on the conveyor belt, and two sets of fixed plates are in contact with adjacent conveyor plates. Each conveyor belt has an opening near each set of conveyor plates, and each set of conveyor plates is angled on the side near the adjacent opening. A discharge port is provided on the side of the crushing box near the conveyor belt, located at the lowest point of the filter screen. A limiting plate is provided on the inner wall of the conveyor belt near the crushing box, and the limiting plate is sleeved on the side wall of the conveyor belt. The limiting plate is fixedly installed between two sets of mounting plates. The conveyor belt and two sets of rotating rollers are in contact with the limiting plate. Both the limiting plate and the side wall of the crushing box have blowing ports adapted to the openings.

[0009] Furthermore, a blower is installed inside the conveyor belt. The blower is fixedly installed to the rear mounting plate. The output end of the blower faces the adjacent blowing port. A slot is opened on the front wall of the rear mounting plate. A movable plate is slidably installed in the inner cavity of the slot. A return spring is fixedly installed between the movable plate and the inner cavity of the slot. Contact blocks are fixedly installed on opposite sides of the movable plate and the inner wall of the slot. Two sets of contact blocks are connected in series with the blower. The bottom of the movable plate is located slightly below the two sets of blowing ports.

[0010] Furthermore, a gear frame is provided inside the conical frame, and the gear frame is rotatably mounted on the rod wall of the rotating rod. Two sets of gears are provided inside the gear frame, one set of gears is fixedly mounted on the rod wall of the rotating rod, and the other set of gears is rotatably mounted on the inner cavity bottom wall of the conical frame. The two sets of gears are sequentially meshed with the conveying plate.

[0011] Furthermore, a mounting post is fixedly installed on one side of the top of the toothed frame, a ball block is slidably installed on the top of the mounting post, and an elastic spring is fixedly installed between the ball block and the mounting post.

[0012] Furthermore, the bottom of the fixing column is uniformly provided with grooves that are adapted to the ball block, and the ball block is in contact with the inner cavity of the adjacent groove.

[0013] Furthermore, the elastic spring is initially in a compressed state, and the contact area between the ball block and the groove is less than half of its own size.

[0014] Furthermore, there must be at least two sets of horizontal conveying plates below one side of the inner cavity bottom wall of the discharge port.

[0015] Furthermore, the two sets of blowing ports are arranged in the same horizontal direction, and the two sets of blowing ports are located above the uppermost crushing blade.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) This solution introduces low-temperature gas into the hollow rod and sprays it precisely to the upper and lower sides of the blade through the exhaust hole, directly carrying away a large amount of heat generated by cutting friction. Combined with the arc-shaped guide plate on the back of the blade, the airflow is guided to the cutting point of the blade by the centrifugal force of rotation, forming a pneumatic isolation layer. This not only effectively suppresses the thermal deformation of the tool and the phenomenon of rubber softening and sticking to the tool, eliminating the hidden dangers of tool sticking and scorching from the source, but also uses the blade structure at the front end of the arc-shaped guide plate to assist in crushing, significantly extending the service life of the tool and improving the purity and quality of the finished particles.

[0017] (2) This scheme achieves preliminary separation of coarse and fine particles through an inclined filter screen. Large particles fall onto the conveyor plate through the discharge port. The motor drives the roller to move the conveyor belt and conveyor plate upward. When the conveyor plate squeezes the movable plate and the contact block contacts, the blower is powered on and blows the large particles back to the crushing box through the blowing port. This realizes automatic grading and forced return secondary crushing of large particles, completely eliminates the hidden danger of coarse particles being mixed in, and avoids over-crushing of qualified fine powder. It realizes continuous operation, greatly improves the conversion rate and utilization rate of raw materials, and ensures that the produced rubber particles have a uniform particle size.

[0018] (3) This solution drives the gear to rotate through the rotating rod, which drives the ball blocks on the gear frame and mounting column to rotate, so that the ball blocks periodically enter or exit the groove at the bottom of the fixed column, generating reciprocating impact force and transmitting it to the filter screen. This mechanical vibration effectively destroys the electrostatic adsorption and agglomeration between rubber particles, prevents fine particles from clogging the screen holes, significantly improves the screening rate, and at the same time promotes the large particles that do not meet the standards to flow quickly to the discharge port on the filter screen, avoids material accumulation and retention, realizes the real-time dynamic separation of coarse and fine particles, and greatly improves the equipment's processing capacity and screening efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall front structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention without the front mounting plate; Figure 3 For the present invention Figure 2 Side view; Figure 4 This is a cross-sectional view of the crushing chamber of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of the structure of section A in the middle; Figure 6 This is a cross-sectional view of the tapered frame of the present invention; Figure 7 This is an overall sectional view of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of the structure of section B in the middle; Figure 9 For the present invention Figure 7 Enlarged view of the structure of section C; Figure 10 This is a side sectional view of the movable plate of the present invention.

[0020] Explanation of the labels in the diagram: 1. Crushing box; 2. Air supply pipe; 3. Hollow rod; 4. Crushing blade; 5. Exhaust port; 6. Arc-shaped guide plate; 7. Filter screen; 8. Fixed column; 9. Conical frame; 10. Rotating rod; 11. Motor 1; 12. Mounting plate; 13. Fixed plate; 14. Rotating roller; 15. Conveyor belt; 16. Motor 2; 17. Conveying plate; 18. Through port; 19. Discharge port; 20. Limiting plate; 21. Blowing port; 22. Blower; 23. Slotted; 24. Movable plate; 25. Return spring; 26. Contact block; 27. Toothed frame; 28. Gear; 29. ​​Mounting column; 30. Ball block; 31. Elastic spring; 32. Groove. 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0022] Example 1: Rotating airflow cooling and anti-sticking blade structure Please see Figures 5 to 8 A device for processing rubber granules for recycled rubber, comprising a crushing chamber 1. Also includes: The cooling assembly includes an air supply pipe 2 fixedly installed on the top wall of the inner cavity of the crushing chamber 1. A hollow rod 3 is rotatably installed at one end of the air supply pipe 2, and the hollow rod 3 is connected to the inner cavity of the air supply pipe 2. Crushing blades 4 are evenly fixedly installed on the wall of the hollow rod 3. Exhaust holes 5 are evenly opened on the side wall of the hollow rod 3. Each set of exhaust holes 5 is directly opposite the top and bottom of the adjacent crushing blades 4. Two sets of arc-shaped guide plates 6 are fixedly installed on the back of each set of crushing blades 4. A filter screen 7 is fixedly installed in the inner cavity of the crushing chamber 1. A fixing column 8 is fixedly installed on the filter screen 7. A conical frame 9 is fixedly installed on the outer wall of the fixing column 8. A rotating rod 10 is fixedly installed at the bottom end of the hollow rod 3. The rotating rod 10 is rotatably installed with the fixing column 8 and the conical frame 9. A motor 11 is fixedly installed at the bottom end of the conical frame 9. The output shaft of the motor 11 is fixedly installed with the bottom end of the rotating rod 10. A material return assembly is provided on one side of the crushing chamber 1.

[0023] First, motor 11 is turned on. The output shaft of motor 11 drives the hollow rod 3 to rotate via the rotating rod 10. The hollow rod 3 then drives the crushing blades 4 and the arc-shaped guide plate 6 to rotate synchronously. The workers place special scraps such as pure rubber strips or sealing strips from the tire factory into the crushing chamber 1 through the feed pipe at the top of the crushing chamber 1. The rubber material falls into the crushing chamber 1 and is crushed by the various sets of crushing blades 4. The outer end of the air supply pipe 2 is connected to the output end of the external cooling fan. At the same time, the external cooling fan is turned on to produce low-temperature cooling gas. The cooling gas is pumped into the air supply pipe 2, and then enters the rotating hollow rod 3. It is then ejected at high speed through the exhaust holes 5 on the hollow rod 3. Since the outlets of each exhaust hole 5 are precisely aligned with the top and bottom of each set of pulverizing blades 4, the cooling airflow ejected through the exhaust holes 5 directly impacts the surface of the pulverizing blades 4, quickly carrying away the large amount of heat generated by cutting friction. This effectively suppresses the thermal deformation of the blades and the softening and sticking of the rubber caused by temperature rise. Furthermore, as the hollow rod 3 drives the exhaust holes 5 to rotate at high speed, the cooling airflow continuously ejects… The cold air dynamically diffuses within the crushing chamber, creating a uniformly covered low-temperature environment throughout the crushing area. This significantly reduces the overall temperature within the chamber, preventing the rubber material from agglomerating or scorching due to heat accumulation. Furthermore, with the aid of the arc-shaped guide plates 6 positioned on the upper and lower sides of the back of the crushing blade 4, whose guide surfaces face the top and bottom surfaces of the blade, when the hollow rod 3 drives the crushing blade 4 to rotate, some of the cooling airflow ejected from the exhaust port 5 is pushed onto the guide surface of the arc-shaped guide plates 6 by the centrifugal force of rotation. The airflow flows along the guide surface and is then... The cutting point at the very tip of the blade is guided to achieve secondary enhanced cooling and aerodynamic isolation of the key cutting parts of the blade. This ensures that the blade remains sharp and low-temperature during long-term operation, while the high-speed airflow layer physically isolates the softened rubber material from the blade, completely eliminating the risk of blade clogging and subsequent screen blockage. With each set of arc-shaped guide plates 6 having one end facing the blade of the crushing blade 4 as the blade, the arc-shaped guide plates 6 can also work with the crushing blade 4 to crush the rubber material while the hollow rod 3 drives the crushing blade 4 and the arc-shaped guide plates 6 to rotate.

[0024] Example 2: Mechanical screening and automatic return structure for large rubber particles Based on Example 1, such as Figure 7 , Figure 9 and Figure 10 As shown, the material return assembly includes two sets of mounting plates 12 fixedly installed on one side of the crushing box 1. Each set of mounting plates 12 has a fixing plate 13 on its opposite side. Both sets of fixing plates 13 are fixedly installed to the crushing box 1. Two sets of rotating rollers 14 are rotatably installed between the two sets of mounting plates 12. A conveyor belt 15 is driven between the two sets of rotating rollers 14. A second motor 16 is fixedly installed on the rear wall of the rear mounting plate 12. The output shaft of the second motor 16 is fixedly installed with the rotating shaft on one of the sets of rotating rollers 14. Conveyor plates 17 are uniformly fixedly installed on the conveyor belt 15. Two sets of fixed plates 13 are in contact with the adjacent conveyor plates 17. Each conveyor belt 15 has an opening 18 near each set of conveyor plates 17. Each set of conveyor plates 17 is inclined on the side near the adjacent opening 18. The crushing box 1 has a discharge port 19 on the side near the conveyor belt 15. The discharge port 19 is located at the lowest point of the filter screen 7. A limit plate 20 is provided on the inner wall of the side of the conveyor belt 15 near the crushing box 1. The limit plate 20 is sleeved on the side wall of the conveyor belt 15. The limit plate 20 is fixedly installed between two sets of mounting plates 12. The conveyor belt 15 and the two sets of rotating rollers 14 are in contact with the limit plate 20. Both the limit plate 20 and the side wall of the crushing box 1 have a blowing port 21 that matches the opening 18. A blower 22 is installed inside the conveyor belt 15. The blower 22 is fixedly installed with the rear mounting plate 12. The output end of the blower 22 faces the adjacent blowing port 21. A slot 23 is opened on the front wall of the rear mounting plate 13. A movable plate 24 is slidably installed in the inner cavity of the slot 23. A return spring 25 is fixedly installed between the movable plate 24 and the inner cavity of the slot 23. Contact blocks 26 are fixedly installed on opposite sides of the movable plate 24 and the inner cavity wall of the slot 23. The two sets of contact blocks 26 are connected in series with the blower 22. The bottom of the movable plate 24 is located on the lower side between the two sets of blowing ports 21. There must be at least two sets of horizontal conveyor plates 17 below one side of the inner cavity bottom wall of the discharge port 19; the two sets of blowing ports 21 are set in the same horizontal direction, and the two sets of blowing ports 21 are located above the uppermost crushing blade 4.

[0025] The rubber material, after being crushed by the pulverizer 4, will become particles of varying sizes. These particles will fall onto the filter screen 7. Qualified particles will pass through the filter screen 7 and fall to the bottom of the inner cavity of the crushing chamber 1. Large particles that do not pass through the filter screen 7 will roll down the top slope of the filter screen 7 to the discharge port 19, and then be discharged through the discharge port 19 to the top of the lower conveyor plate 17 between the two sets of fixed plates 13. Simultaneously, the second motor 16 is turned on. The output shaft of the second motor 16 drives the upper roller 14 to rotate slowly. The rotation of the upper roller 14 will drive the lower roller 14 to rotate through the conveyor belt 15. At this time, the rotation of the conveyor belt 15 will drive... The conveyor plates 17 on the conveyor belt rotate synchronously. The conveyor plate 17 located on the lower right side of the discharge port 19 will drive the large rubber particles that fall to its top to be conveyed upward. By setting the limiting plate 20, the opening 18 on the conveyor belt 15 near the crushing box 1 can be blocked, thereby blocking the large rubber particles and preventing them from falling into the conveyor belt 15. The conveyor plate 17 with large rubber particles on top will be conveyed upward between the two fixed plates 13. When this conveyor plate 17 is about to pass the blowing port 21, its rear wall will first contact the front wall of the movable plate 24. The conveyor plate 17 will squeeze the movable plate 24 into the inner cavity of the slot 23 through the inclined surface of the lower side of the front wall of the movable plate 24. As the movable plate 24 moves into the inner cavity of the slot 23, it compresses the return spring 25. Simultaneously, the contact blocks 26 on it move synchronously. When the movable plate 24 is fully inside the slot 23, the two sets of contact blocks 26 contact each other, energizing the blower 22 and turning it on in advance. The blower 22's output end blows air into the blowing port 21 on the limit plate 20. When the conveyor plate 17 carries the large rubber particles on its top between the two blowing ports 21, the inclined surface of the conveyor plate 17, combined with the air blowing from the blower 22, causes the blower 22 to expel the large rubber particles from the top of the conveyor plate 17 through the opening 18 at the blowing port 21. Large rubber particles are blown back into the crushing chamber 1. When the side of the conveyor plate 17 containing the large rubber particles is aligned with the bottom surface of the inner cavity of the blowing port 21 on the side wall of the crushing chamber 1, the large rubber particles will be completely blown into the crushing chamber 1 for further crushing. This achieves automatic grading of rubber materials. Qualified fine particles are discharged in time to avoid over-crushing, while oversized particles are forced back to the crushing zone for secondary cutting. This cycle process not only ensures the high uniformity and dispersion of the final rubber particle size and completely eliminates the quality hazard of coarse particles mixed into the finished product, but also significantly improves the conversion rate and utilization rate of raw materials, realizing the continuous and automated production of high-quality rubber particles. When the conveyor plate 17 located at the blowing port 21 continues to move upward past the front wall of the movable plate 24, under the action of the return spring 25, the return spring 25 returns to its initial state and drives the movable plate 24 to move to its initial position. At this time, the two sets of contact blocks 26 move away from each other, and the blower 22 is powered off and shut down. When the large rubber particles at the discharge port 19 fall onto the surface of the conveyor plate 17 on its lower right side, the conveyor plate 17 is conveyed upward away from the discharge port 19. The large particles in the discharge port 19 will continue to fall onto the surface of the next set of conveyor plates 17, so as to achieve continuous operation.

[0026] Example 3: Mechanical Vibration Screening Structure Based on Example 2, such as Figure 7 and Figure 8 As shown, a toothed frame 27 is provided inside the conical frame 9. The toothed frame 27 is rotatably mounted on the rod wall of the rotating rod 10. Two sets of gears 28 are provided inside the toothed frame 27. One set of gears 28 is fixedly mounted on the rod wall of the rotating rod 10, and the other set of gears 28 is rotatably mounted on the bottom wall of the inner cavity of the conical frame 9. The two sets of gears 28 are sequentially meshed with the conveyor plate 17. A mounting post 29 is fixedly installed on one side of the top of the toothed frame 27. A ball block 30 is slidably installed on the top of the mounting post 29. An elastic spring 31 is fixedly installed between the ball block 30 and the mounting post 29. The bottom of the fixed column 8 is evenly provided with grooves 32 that are adapted to the ball block 30, and the ball block 30 is in contact with the inner cavity of the adjacent groove 32. The elastic spring 31 is initially compressed, and the contact area between the ball block 30 and the groove 32 is less than half of its own size.

[0027] During the rotation of the rotating rod 10 driven by the output shaft of motor 11, the rotating rod 10 drives the gear 28 on it to rotate synchronously. The arrangement of two sets of gears 28 enables the gear frame 27 to rotate and reduces the rotation speed of the gear frame 27. At the same time, the rotation of the gear frame 27 drives the mounting post 29 and the ball block 30 on it to rotate synchronously. When the top of the ball block 30 moves out of the inner cavity of the adjacent groove 32, the ball block 30 is pressed against the mounting post 29 and moves downward, compressing the elastic spring 31. At this time, the ball block 30 moves to the bottom plane of the fixed post 8. When the top of the ball block 30 moves to the position of the next set of grooves 32, under the action of the elastic spring 31, the elastic spring 31 returns to its initial state and pushes the ball block 30 upward. The ball bearing 30 is moved and inserted into the groove 32 at this position. At this time, as the toothed frame 27 drives the ball bearing 30 to rotate through the mounting column 29, the ball bearing 30 can reciprocate to impact the inner cavity of each set of grooves 32 and generate vibration on the fixed column 8. The vibration wave will be transmitted to the filter screen 7. On the one hand, it can effectively destroy the electrostatic adsorption and agglomeration between rubber particles, prevent fine particles from clogging the screen holes, and significantly improve the screening rate and filtration efficiency of qualified fine powder. On the other hand, it can promote the large rubber particles that do not meet the standards to flow quickly to the lower discharge port 19 on the filter screen 7, avoiding the accumulation and retention of materials on the screen surface. This synergistic effect of vibration-assisted filtration and vibration conveying not only realizes the instantaneous dynamic separation of coarse and fine particles, but also improves the raw material processing capacity and finished product output of the equipment.

[0028] Working principle: First, start the motor 11, its output shaft drives the rotating rod 10 to rotate, which in turn drives the hollow rod 3, the crushing blade 4 and the arc-shaped guide plate 6 to rotate synchronously. The rubber material to be processed enters the crushing box 1 from the top and is cut and crushed by the high-speed rotating crushing blade 4. At the same time, the external cooling fan pumps low-temperature gas into the air supply pipe 2, which is ejected at high speed through the exhaust hole 5 inside the hollow rod 3. The airflow directly impacts the surface of the crushing blade 4, carrying away the frictional heat, and is then guided to the cutting point of the blade by the arc-shaped guide plate 6 to form a pneumatic isolation layer, which effectively prevents the rubber from softening and sticking to the blade or scorching due to temperature rise. The crushed material falls into the filter screen 7. Qualified fine particles pass through the screen and fall down, while unqualified large particles roll down the inclined surface of the screen to the discharge port 19 and fall onto the conveyor plate 17 of the conveyor belt 15. The motor 16 drives the rotating roller 14 to drive the conveyor belt 15 to convey the large particles upward. When the material conveyor plate 17 moves upward and contacts the movable plate 24, it pushes the contact block 26 to close the circuit and starts the blower 22. The airflow blows the large particles back to the crushing box 1 through the blowing port 21 and the through port 18 for secondary crushing. After the conveyor plate 17 leaves, the reset spring 25 resets the movable plate 24 and cuts off the power, completing the automatic return cycle. In addition, when the rotating rod 10 rotates, it drives the gear frame 27 to rotate through the gear 28 to reduce speed. This causes the ball blocks 30 on the mounting column 29 to periodically engage and disengage from the groove 32 at the bottom of the fixing column 8. This process generates continuous mechanical impact vibration and transmits it to the filter screen 7, which breaks up the electrostatic agglomeration of particles to prevent clogging. At the same time, it accelerates the flow of large particles to the discharge port 19, which significantly improves screening efficiency and processing capacity.

[0029] The above description is merely a preferred embodiment of the present invention; however, 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 its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A device for processing rubber granules for recycled rubber, comprising a crushing box (1). Its features are: Also includes: The cooling assembly includes an air supply pipe (2) fixedly installed on the top wall of the inner cavity of the crushing chamber (1). A hollow rod (3) is rotatably installed at one end of the air supply pipe (2). The hollow rod (3) is connected to the air supply pipe (2). Crushing blades (4) are evenly fixedly installed on the wall of the hollow rod (3). Exhaust holes (5) are evenly opened on the side wall of the hollow rod (3). Each set of exhaust holes (5) is directly opposite the top and bottom of the adjacent crushing blades (4). Two sets of arc-shaped guide plates (6) are fixedly installed on the back of each set of crushing blades (4). The inner cavity of the crushing box (1) is fixedly equipped with a filter screen (7), a fixed column (8) is fixedly installed on the filter screen (7), a conical frame (9) is fixedly installed on the outer wall of the fixed column (8), a rotating rod (10) is fixedly installed at the bottom end of the hollow rod (3), the rotating rod (10) is rotatably installed with the fixed column (8) and the conical frame (9), a motor (11) is fixedly installed at the bottom end of the conical frame (9), the output shaft of the motor (11) is fixedly installed with the bottom end of the rotating rod (10), and a return material assembly is provided on one side of the crushing box (1).

2. The rubber granule processing device for recycled rubber according to claim 1, characterized in that: The material return assembly includes two sets of mounting plates (12) fixedly installed on one side of the crushing box (1). Each set of mounting plates (12) has a fixing plate (13) on its opposite side. Both sets of fixing plates (13) are fixedly installed to the crushing box (1). Two sets of rotating rollers (14) are rotatably installed between the two sets of mounting plates (12). A conveyor belt (15) is driven between the two sets of rotating rollers (14). A second motor (16) is fixedly installed on the rear wall of the rear mounting plate (12). The output shaft of the second motor (16) is fixedly installed to the rotating shaft on one of the sets of rotating rollers (14).

3. The rubber granule processing device for recycled rubber according to claim 2, characterized in that: Conveyor plates (17) are uniformly fixedly installed on the conveyor belt (15). Two sets of fixed plates (13) are in contact with the adjacent conveyor plates (17). Each conveyor belt (15) has an opening (18) near each set of conveyor plates (17). The side of each set of conveyor plates (17) near the adjacent opening (18) is angled. The crushing box (1) has a discharge port (19) near the conveyor belt (15). The discharge port (19) is located on the filter screen (7). At the lowest point, a limiting plate (20) is provided on the inner wall of the conveyor belt (15) near the crushing box (1). The limiting plate (20) is sleeved on the side wall of the conveyor belt (15). The limiting plate (20) is fixedly installed between the two sets of mounting plates (12). The conveyor belt (15) and the two sets of rotating rollers (14) are in contact with the limiting plate (20). The limiting plate (20) and the side wall of the crushing box (1) are both provided with a blowing port (21) that matches the opening (18).

4. The rubber granule processing device for recycled rubber according to claim 3, characterized in that: A blower (22) is installed inside the conveyor belt (15). The blower (22) is fixedly installed with the mounting plate (12) on the rear side. The output end of the blower (22) faces the adjacent blowing port (21). A slot (23) is provided on the front wall of the fixed plate (13) on the rear side. A movable plate (24) is slidably installed in the inner cavity of the slot (23). A return spring (25) is fixedly installed between the movable plate (24) and the inner cavity of the slot (23). Contact blocks (26) are fixedly installed on the opposite sides of the movable plate (24) and the inner cavity wall of the slot (23). Two sets of contact blocks (26) are connected in series with the blower (22). The bottom of the movable plate (24) is located on the lower side between the two sets of blowing ports (21).

5. The rubber granule processing device for recycled rubber according to claim 3, characterized in that: A toothed frame (27) is provided inside the conical frame (9). The toothed frame (27) is rotatably mounted on the rod wall of the rotating rod (10). Two sets of gears (28) are provided inside the toothed frame (27). One set of gears (28) is fixedly mounted on the rod wall of the rotating rod (10), and the other set of gears (28) is rotatably mounted on the bottom wall of the inner cavity of the conical frame (9). The two sets of gears (28) are sequentially meshed with the conveying plate (17).

6. The rubber granule processing device for recycled rubber according to claim 5, characterized in that: A mounting post (29) is fixedly installed on one side of the top of the toothed frame (27). A ball block (30) is slidably installed on the top of the mounting post (29). An elastic spring (31) is fixedly installed between the ball block (30) and the mounting post (29).

7. The rubber granule processing device for recycled rubber according to claim 6, characterized in that: The bottom of the fixed column (8) is uniformly provided with grooves (32) that are adapted to the ball block (30), and the ball block (30) is in contact with the inner cavity of the adjacent groove (32).

8. The rubber granule processing device for recycled rubber according to claim 7, characterized in that: The elastic spring (31) is initially compressed, and the contact area between the ball block (30) and the groove (32) is less than half of its own size.

9. The rubber granule processing device for recycled rubber according to claim 3, characterized in that: There must be at least two sets of horizontal conveyor plates (17) below one side of the inner cavity bottom wall of the discharge port (19).

10. The rubber granule processing device for recycled rubber according to claim 3, characterized in that: The two sets of blowing ports (21) are arranged in the same horizontal direction, and the two sets of blowing ports (21) are located above the uppermost crushing blade (4).

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