A device for grinding and crushing waste tires
Patent Information
- Application Number
- CN202522607527.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-09
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-12-09
AI Technical Summary
[0003]由于轮胎由橡胶材质制成，具有较高的弹性和韧性，现有的轮胎研磨粉碎装置在处理时会形成较大的橡胶块，粉碎效果较差，从而影响后续对废旧轮胎回收处理的加工工序
通过初步破碎结构、初步破碎结构和研磨结构的三次处理，逐步对轮胎进行破碎研磨，保证最终产物粒径均匀且细腻，解决传统装置粉碎后橡胶块过大的问题，满足后续回收加工需求；通过初筛板对初步破碎不彻底的轮胎碎进行筛分，在振动电机一的作用下进入二次破碎箱再次进行破碎，保证粉碎效果；通过回筛板和回收管对研磨未达到粒径标准的轮胎碎进行回收再次进行破碎研磨；倒锥形罩可引导物料精准落入研磨结构，避免堆积在研磨电机顶部，影响研磨电机的使用；通过冷风机及时带走粉碎研磨产生的热量，防止橡胶因高温粘连，保障设备连续稳定运行。
Smart Images
Figure CN224915136U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tire recycling technology, and in particular to a waste tire grinding and crushing device. Background Technology
[0002] Waste tires are a valuable renewable resource, yet the utilization rate of waste tire bodies in China is currently less than 30%. Discarded tires not only waste resources but also pollute the natural environment on which we depend for survival. Extracting rubber powder from waste tires is currently the most promising treatment method. This approach not only addresses the environmental pollution caused by waste tires but also generates a renewable resource. Therefore, waste tire shredding technology has seen significant development both domestically and internationally in recent years. Waste tire shredding equipment is a product of this technological advancement.
[0003] Because tires are made of rubber, which has high elasticity and toughness, existing tire grinding and shredding equipment will form large rubber blocks during processing, resulting in poor shredding effect and affecting subsequent processing steps for recycling waste tires. Utility Model Content
[0004] This utility model addresses the problems in the prior art by providing a waste tire grinding and pulverizing device, which is achieved through the following technical solution: A waste tire grinding and crushing device includes an existing screw feeder and a crushing box. The crushing box is provided with a primary crushing structure, a secondary crushing structure and a grinding structure from top to bottom. The top of the crushing box is open. The discharge port of the screw feeder is located at the top opening of the crushing box. The bottom of the crushing box is provided with a discharge port.
[0005] Furthermore, the preliminary crushing structure includes two crushing rollers, a motor, two pulleys, and a belt. The two crushing rollers are rotatably mounted on the top side wall of the crushing box. The shaft of one side of the crushing roller passes through the crushing box and extends to the outside of the crushing box. The pulley is fixedly mounted on the shaft of the crushing roller on the outside of the crushing box. The belt is cross-wound around the two pulleys and the two pulleys drive in opposite directions through the belt. The output end of the motor is fixedly connected to the shaft of one of the crushing rollers. A motor mounting base is fixedly connected to the bottom of the motor and the motor mounting base is fixedly connected to the outer side wall of the crushing box.
[0006] Furthermore, a secondary crushing box is provided extending outward from the side wall of the crushing box away from the screw conveyor. The secondary crushing structure is located inside the secondary crushing box and includes two crushing blade rollers, a second motor, two pulleys, and a second belt. The two crushing blade rollers are rotatably installed inside the secondary crushing box. The rotating shaft on one side of the crushing blade rollers passes through the side wall of the secondary crushing box and extends to the outside. The second pulley is fixedly installed on the rotating shaft outside the crushing blade rollers. The second belt is crisscrossed and wound around the two pulleys. The output end of the second motor is fixedly connected to the rotating shaft of one of the crushing blade rollers. A motor mounting base is also fixedly connected to the bottom of the second motor. The motor mounting base at the bottom of the second motor is fixedly connected to the outer side wall of the secondary crushing box.
[0007] Furthermore, the grinding structure includes a fixed grinding disc, a movable grinding disc, and a grinding motor. The fixed grinding disc is fixedly installed on the inner wall of the crushing chamber, and the movable grinding disc is rotatably disposed on the inner ring surface of the fixed grinding disc. The output end of the grinding motor is fixedly connected to the top of the movable grinding disc. The grinding motor is fixed inside the crushing chamber, and an inverted conical cover is fixedly installed on the top of the grinding motor. A fixing rod is fixedly connected to the outer ring of the inverted conical cover, and the end of the fixing rod away from the inverted conical cover is fixedly connected to the inner wall of the crushing chamber.
[0008] Furthermore, a primary screening plate is installed at the bottom of the primary crushing structure, and a vibration motor is fixedly installed at the bottom of the primary screening plate. The primary screening plate is inclined toward the side where the secondary crushing box is located. A primary screening opening is opened at the top of the connection between the crushing box and the secondary crushing box. The primary screening plate extends from the primary screening opening to the top of the two crushing blade rollers.
[0009] Furthermore, the bottom of the secondary crushing box is inclined toward the side where the crushing box is located, and a return port is provided at the bottom of the connection between the secondary crushing box and the crushing box. The return port is located above the grinding structure, and the grinding structure is located directly below the primary crushing structure.
[0010] Furthermore, a return screen plate is provided at the bottom of the grinding structure, and a second vibration motor is fixedly installed at the bottom of the return screen plate. The return screen plate is inclined toward the side where the screw feeder is located. A recycling port is opened on the side wall of the crushing box above the return screen plate. The recycling port is connected to a recycling pipe, and the recycling pipe is inclined downward and connected to the feed port of the screw feeder.
[0011] Furthermore, a cold air fan is fixedly installed on the top of the secondary crushing box, and an air outlet pipe is fixedly connected to the air outlet end of the cold air fan. The air outlet pipe is divided into multiple branch pipes, which are respectively connected to the top of the crushing box and the side wall of the secondary crushing box.
[0012] In summary, the beneficial technical effects of this utility model are as follows: The tires are progressively crushed and ground through a three-stage process involving initial crushing, secondary crushing, and grinding, ensuring a uniform and fine final product particle size. This solves the problem of excessively large rubber blocks after crushing in traditional equipment and meets the needs of subsequent recycling and processing. Tire fragments that are not thoroughly crushed in the initial stage are screened by a primary screening plate and then further crushed in a secondary crushing chamber under the action of a vibrating motor, ensuring optimal crushing results. Tire fragments that do not meet the particle size standard are recycled and further crushed and ground through a return screening plate and a recovery pipe. An inverted conical hood guides the material precisely into the grinding structure, preventing accumulation on top of the grinding motor and affecting its operation. A cooling fan promptly removes the heat generated during crushing and grinding, preventing rubber from sticking together due to high temperatures and ensuring continuous and stable equipment operation. Attached Figure Description
[0013] Figure 1 This is a structural schematic diagram used to illustrate the overall structure of this utility model.
[0014] Figure 2 This is a schematic diagram used to illustrate the internal structure of the crushing chamber.
[0015] Attached reference numerals: 1. Screw feeder; 2. Crushing box; 3. Primary crushing structure; 301. Crushing roller; 302. Motor 1; 303. Pulley 1; 304. Belt 1; 4. Secondary crushing structure; 401. Crushing blade roller; 402. Motor 2; 403. Pulley 2; 404. Belt 2; 5. Grinding structure; 501. Fixed grinding disc; 502. Moving grinding disc; 503. Grinding motor; 6. Discharge port; 7. Secondary crushing box; 8. Inverted conical cover; 9. Fixed rod; 10. Primary screen plate; 11. Vibrating motor 1; 12. Primary screen opening; 13. Return port; 14. Return screen plate; 15. Vibrating motor 2; 16. Recovery port; 17. Recovery pipe; 18. Cooling fan; 19. Air outlet pipe; 20. Branch pipe. Detailed Implementation
[0016] The present invention will be further described in detail below with reference to the accompanying drawings.
[0017] Example like Figure 1-2 As shown, this utility model discloses a waste tire grinding and crushing device, which includes an existing screw feeder 1 and a crushing box 2. The crushing box 2 is provided with a primary crushing structure 3, a secondary crushing structure 4 and a grinding structure 5 from top to bottom. The top of the crushing box 2 is open, the discharge port of the screw feeder 1 is located at the top opening of the crushing box 2, and the bottom of the crushing box 2 is provided with a discharge port 6.
[0018] The preliminary crushing structure 3 includes two crushing rollers 301, a motor 302, two pulleys 303, and a belt 304. The two crushing rollers 301 are rotatably mounted on the top side wall of the crushing box 2. The shaft of one side of the crushing roller 301 passes through the crushing box 2 and extends to the outside of the crushing box 2. The pulley 303 is fixedly mounted on the shaft of the crushing roller 301 on the outside of the crushing box 2. The belt 304 is cross-wound around the two pulleys 303. The two pulleys 303 are driven in opposite directions by the belt 304. The output end of the motor 302 is fixedly connected to the shaft of one of the crushing rollers 301. A motor mounting base is fixedly connected to the bottom of the motor 302. The motor mounting base is fixedly connected to the outer side wall of the crushing box 2.
[0019] A secondary crushing box 7 extends outward from the side wall of the crushing box 2 away from the screw conveyor 1. The secondary crushing structure 4 is disposed inside the secondary crushing box 7. The secondary crushing structure 4 includes two crushing blade rollers 401, a second motor 402, two pulleys 403, and a second belt 404. The two crushing blade rollers 401 are rotatably installed inside the secondary crushing box 7. The rotating shaft on one side of the crushing blade roller 401 passes through the side wall of the secondary crushing box 7 and extends to the outside. The second pulley 403 is fixedly installed on the rotating shaft outside the crushing blade roller 401. The second belt 404 is cross-wound around the two pulleys 403. The output end of the second motor 402 is fixedly connected to the rotating shaft of one of the crushing blade rollers 401. A motor mounting base is also fixedly connected to the bottom of the second motor 402. The motor mounting base at the bottom of the second motor 402 is fixedly connected to the outer side wall of the secondary crushing box 7.
[0020] The grinding structure 5 includes a fixed grinding disc 501, a movable grinding disc 502, and a grinding motor 503. The fixed grinding disc 501 is fixedly installed on the inner wall of the crushing box 2. The movable grinding disc 502 is rotatably disposed on the inner ring surface of the fixed grinding disc 501. The output end of the grinding motor 503 is fixedly connected to the top of the movable grinding disc 502. The grinding motor 503 is fixed inside the crushing box 2. An inverted conical cover 8 is fixedly installed on the top of the grinding motor 503. A fixing rod 9 is fixedly connected to the outer ring of the inverted conical cover 8. The end of the fixing rod 9 away from the inverted conical cover 8 is fixedly connected to the inner wall of the crushing box 2.
[0021] The primary crushing structure 3 is equipped with a primary screen plate 10 at its bottom. A vibration motor 11 is fixedly installed at the bottom of the primary screen plate 10. The primary screen plate 10 is inclined toward the side where the secondary crushing box 7 is located. A primary screen opening 12 is provided at the top of the connection between the crushing box 2 and the secondary crushing box 7. The primary screen plate 10 extends from the primary screen opening 12 to the top of the two crushing blade rollers 401.
[0022] The bottom of the secondary crushing box 7 is inclined toward the side where the crushing box 2 is located. A return port 13 is provided at the bottom of the connection between the secondary crushing box 7 and the crushing box 2. The return port 13 is located above the grinding structure 5, and the grinding structure 5 is located directly below the primary crushing structure 3.
[0023] The grinding structure 5 has a return screen plate 14 at the bottom, and a vibration motor 15 is fixedly installed at the bottom of the return screen plate 14. The return screen plate 14 is inclined toward the side where the screw feeder 1 is located. A recovery port 16 is opened on the side wall of the crushing box 2 above the return screen plate 14. The recovery port 16 is connected to a recovery pipe 17. The recovery pipe 17 is inclined downward and connected to the feed port of the screw feeder 1.
[0024] A cooler 18 is fixedly installed on the top of the secondary crushing box 7. An air outlet pipe 19 is fixedly connected to the air outlet end of the cooler 18. The air outlet pipe 19 is divided into multiple branch pipes 20, which are respectively connected to the top of the crushing box 2 and the side wall of the secondary crushing box 7.
[0025] The side wall of the crushing box 2 is provided with an inspection door, and a sealing strip is provided at the connection between the inspection door and the crushing box 2.
[0026] The specific implementation method of this example is as follows: The pre-treated tire blocks are fed into the screw conveyor 1. The material falls between two crushing rollers 301 inside the crushing chamber 2. Motor 302 drives pulley 303 to rotate. Under the action of belt 304, the two crushing rollers 301 rotate relative to each other for crushing. Coarse material falls onto the primary screen plate 10. Under the vibration of the vibrating motor 11, small-sized material falls directly into the lower grinding structure 5 through the screen holes. Coarse material that does not pass through the screen holes slides along the inclined primary screen plate through the primary screen opening 12 into the secondary crushing chamber 7, where it is sheared and refined by the crushing blade rollers 401. The fine material then flows along the secondary crushing... The material falls from the inclined bottom of box 7 into the grinding structure 5 through the return port 13. The grinding motor 503 drives the grinding disc 502 to rotate and grind the fine material into rubber powder. The rubber powder falls onto the return screen plate 14. Under the vibration of the vibrating motor 15, the rubber powder with the qualified particle size passes through the screen holes and is discharged and collected through the discharge port 6. The rubber powder that does not meet the standard flows back to the feed port of the screw feeder 1 along the inclined return screen plate 14 through the recovery port 16 and the recovery pipe 17, and re-enters the crushing and grinding process to form a closed loop. During the crushing and grinding process, the cold air fan 18 sends air into the crushing box and the secondary crushing box to remove the heat generated by crushing and grinding, and prevent the rubber from softening and sticking due to high temperature.
[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A waste tire grinding and crushing device, comprising a screw feeder (1) and a crushing box (2), characterized in that, The crushing box (2) is provided with a primary crushing structure (3), a secondary crushing structure (4) and a grinding structure (5) from top to bottom. The top of the crushing box (2) is open. The discharge port of the screw feeder (1) is located at the top opening of the crushing box (2). The bottom of the crushing box (2) is provided with a discharge port (6).
2. The waste tire grinding and pulverizing device according to claim 1, characterized in that, The preliminary crushing structure (3) includes two crushing rollers (301), a motor (302), two pulleys (303), and a belt (304). The two crushing rollers (301) are rotatably mounted on the top side wall of the crushing box (2). The shaft of one side of the crushing roller (301) passes through the crushing box (2) and extends to the outside of the crushing box (2). The pulley (303) is fixedly mounted on the shaft of the crushing roller (301) on the outside of the crushing box (2). The belt (304) is cross-wound around the two pulleys (303). The two pulleys (303) are driven in opposite directions through the belt (304). The output end of the motor (302) is fixedly connected to the shaft of one of the crushing rollers (301). A motor mounting base is fixedly connected to the bottom of the motor (302). The motor mounting base is fixedly connected to the outer side wall of the crushing box (2).
3. The waste tire grinding and pulverizing device according to claim 2, characterized in that, A secondary crushing box (7) is provided on the side wall of the crushing box (2) away from the screw conveyor (1). The secondary crushing structure (4) is set inside the secondary crushing box (7). The secondary crushing structure (4) includes two crushing blade rollers (401), a second motor (402), two second pulleys (403) and a second belt (404). The two crushing blade rollers (401) are rotatably installed inside the secondary crushing box (7). The rotating shaft on one side of the crushing blade rollers (401) passes through the secondary crushing box. (7) The sidewall extends to the outside. The second pulley (403) is fixedly installed on the rotating shaft outside the crushing blade roller (401). The second belt (404) is cross-wound around the two second pulleys (403). The output end of the second motor (402) is fixedly connected to the rotating shaft of one of the crushing blade rollers (401). The bottom of the second motor (402) is also fixedly connected to a motor mounting base. The motor mounting base at the bottom of the second motor (402) is fixedly connected to the outer sidewall of the secondary crushing box (7).
4. The waste tire grinding and pulverizing device according to claim 3, characterized in that, The grinding structure (5) includes a fixed grinding disc (501), a moving grinding disc (502), and a grinding motor (503). The fixed grinding disc (501) is fixedly installed on the inner wall of the crushing box (2). The moving grinding disc (502) is rotatably disposed on the inner ring surface of the fixed grinding disc (501). The output end of the grinding motor (503) is fixedly connected to the top of the moving grinding disc (502). The grinding motor (503) is fixed inside the crushing box (2). An inverted conical cover (8) is fixedly installed on the top of the grinding motor (503). A fixing rod (9) is fixedly connected to the outer ring of the inverted conical cover (8). The end of the fixing rod (9) away from the inverted conical cover (8) is fixedly connected to the inner wall of the crushing box (2).
5. The waste tire grinding and pulverizing device according to claim 4, characterized in that, The primary crushing structure (3) is equipped with a primary screening plate (10) at the bottom. A vibration motor (11) is fixedly installed at the bottom of the primary screening plate (10). The primary screening plate (10) is inclined toward the side where the secondary crushing box (7) is located. A primary screening port (12) is opened at the top of the connection between the crushing box (2) and the secondary crushing box (7). The primary screening plate (10) extends from the primary screening port (12) to the top of the two crushing blade rollers (401).
6. The waste tire grinding and pulverizing device according to claim 5, characterized in that, The bottom of the secondary crushing box (7) is inclined toward the side where the crushing box (2) is located. A return port (13) is provided at the bottom of the connection between the secondary crushing box (7) and the crushing box (2). The return port (13) is located above the grinding structure (5). The grinding structure (5) is located directly below the primary crushing structure (3).
7. The waste tire grinding and pulverizing device according to claim 6, characterized in that, The grinding structure (5) is provided with a return screen plate (14) at the bottom. A vibration motor (15) is fixedly installed at the bottom of the return screen plate (14). The return screen plate (14) is inclined toward the side where the screw feeder (1) is located. A recycling port (16) is opened on the side wall of the crushing box (2) above the return screen plate (14). The recycling port (16) is connected to a recycling pipe (17). The recycling pipe (17) is inclined downward and connected to the feed inlet of the screw feeder (1).
8. The waste tire grinding and pulverizing device according to claim 7, characterized in that, A cooler (18) is fixedly installed on the top of the secondary crushing box (7). An air outlet pipe (19) is fixedly connected to the air outlet end of the cooler (18). The air outlet pipe (19) is divided into multiple branch pipes (20), which are respectively connected to the top of the crushing box (2) and the side wall of the secondary crushing box (7).