A tire crushing material continuous supply device and control method

Abstract

The present invention discloses a continuous supply device and a control method for tire crushing material, and relates to the technical field of tire cracking production. In the present invention, a discharge pipe is provided on the annular side of an insulated outer tube. A heat-conducting inner tube is located inside the insulated outer tube, and a gear ring is fixedly installed on the side end of the heat-conducting inner tube facing the discharge pipe. An annular cavity connected to a gas cooling circulation component is formed between the heat-conducting inner tube and the insulated outer tube. The other end passes through the heat-conducting inner tube and is connected to a flexible coupling. The pitch of the feed screw gradually decreases from the end of the universal joint to the flexible coupling. The output shaft of the first motor is connected to the flexible coupling to drive the feed screw to rotate. The second motor is fixedly mounted on the outside of the insulated outer tube. The gear reducer is fixedly mounted on the outside of the insulated outer tube. The present invention adopts a variable pitch feed screw design. With the cooperation of the universal joint and the flexible coupling, when local blockage or uneven force occurs, the feed screw can swing, effectively eliminating or buffering the state, and reducing the operating pressure of the screw and the conveying pipeline.

Description

Technical Field

[0001] The present invention relates to the technical field of tire pyrolysis production, and in particular to a tire crushing material continuous supply device and a driving and controlling method. Background Art

[0002] In the field of tire recycling, tire crushing is a key step. Crushing large quantities of scrap tires produces a significant amount of rubber crumbs. The industry currently uses screw conveyors to transport these rubber crumbs to related cracking equipment.

[0003] However, the tire shredding process generates a significant amount of heat, resulting in high temperatures in the crushed rubber particles. Once these hot rubber particles enter the auger, they expand due to thermal expansion, significantly increasing the squeezing pressure between the rubber particles within the auger. Especially when the auger is fully loaded, excessive squeezing pressure places a significant strain on the auger and the conveying pipeline, not only impacting normal operation but also accelerating equipment wear, reducing its service life and increasing maintenance and replacement costs.

[0004] In addition, long-term high-load operation may also lead to a decrease in transportation efficiency, which cannot meet the needs of large-scale production and restrict the efficient development of the tire recycling and processing industry.

[0005] Therefore, how to effectively solve the problems of high temperature, blockage, wear and low conveying efficiency during the transportation of rubber crumbs has become a difficult problem that needs to be solved urgently in the industry. Summary of the Invention

[0006] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The present invention provides a tire crushing material continuous supply device, comprising the following structure:

[0008] Insulated outer tube: one end is fixedly connected to the periphery of the crushing cavity outlet at the bottom of the crushing equipment, and the other end is equipped with a flexible coupling. A discharge pipe is provided on the ring side of the insulated outer tube.

[0009] Heat-conducting inner tube: Located inside the heat-insulating outer tube, one end is rotatably connected to the outlet of the crushing chamber at the bottom of the crushing equipment, and the other end extends to align with the discharge pipe.

[0010] An annular cavity connected to the gas cooling circulation component is formed between the heat-conducting inner tube and the heat-insulating outer tube. The heat-insulating outer tube is embedded with a cavity temperature sensor for detecting the temperature of the annular cavity gas.

[0011] Feeding screw: Coaxially arranged with the heat-conducting inner tube, one end is connected to the universal shaft embedded in the side plate of the crushing chamber, and the other end passes through the heat-conducting inner tube and is connected to the flexible coupling. The pitch of the feeding screw gradually decreases from the universal shaft end to the flexible coupling.

[0012] The first motor: its output shaft is connected to the flexible coupling to drive the feeding screw to rotate.

[0013] The second motor is fixed on the outside of the heat-insulating outer tube and the output side is rotatably connected to the heat-conducting inner tube.

[0014] As a preferred technical solution of the device of the present invention, a first bearing is disposed between the heat-conducting inner tube and the outlet of the crushing chamber, and a second bearing is disposed between the heat-conducting inner tube and the insulated outer tube. Two retaining rings are also disposed between the heat-conducting inner tube and the insulated outer tube. An annular cavity for airflow is located between the two retaining rings, and the outer surface of the heat-conducting inner tube is provided with a plurality of staggered heat dissipation fins. An end cavity is formed between the first bearing and an adjacent retaining ring. The insulated outer tube has a discharge hole connected to the end cavity, and a collection box is located outside the discharge hole.

[0015] As a preferred technical solution of the device of the present invention: with the universal joint as the center, the swing range of the feeding screw through the flexible coupling is ±5°.

[0016] As a preferred technical solution of the device of the present invention, an end cap is provided at the other end of the insulated outer tube, and a flexible coupling is positioned at the center of the end cap. An inner retaining ring is fixedly mounted inside the end cap of the insulated outer tube, and a discharge chamber is formed between the inner retaining ring and the heat-conducting inner tube, directly above the discharge pipe.

[0017] As a preferred technical solution of the present invention, the gas cooling circulation assembly is configured as follows: an insulated outer tube is provided with an air inlet and an air outlet connected to the annular cavity. The air outlet is connected to a circulating air pump via an air pipe, which is in turn connected to a cooling module via an air pipe, which is in turn connected to the air inlet via an air pipe. The cooling module is also connected to the air inlet via an air pipe. An inlet air temperature sensor is located on the inlet side of the cooling module, and an outlet air temperature sensor is located on the outlet side. The heat-conducting inner tube is made of a copper-aluminum alloy.

[0018] As a preferred technical solution of the device of the present invention, a gear ring is fixedly mounted on the end of the heat-conducting inner tube facing the discharge tube. A gear reducer is fixedly mounted on the outside of the insulated outer tube. The output shaft of the second motor is connected to the input of the gear reducer, and the output of the gear reducer is equipped with a linkage gear that extends into the interior of the insulated outer tube and meshes with the gear ring. A gear insertion notch is provided at the connection between the insulated outer tube and the gear reducer, and the linkage gear moves through the gear insertion notch and extends into the interior of the insulated outer tube.

[0019] As a preferred technical solution of the device of the present invention: the second motor is a brushless DC motor whose output shaft can rotate freely in the power-off state.

[0020] The present invention also provides a method for controlling a tire crushing material continuous supply device, comprising the following contents:

[0021] S1. The control system presets the standard torque T0 and full-load torque T1 when the first motor drives the feeding spiral to rotate, where T0 < T1.

[0022] S2. Start the first motor, which drives the feeding spiral to rotate. The feeding spiral conveys a large amount of rubber scraps in the crushing chamber, and the rubber scraps enter the heat-conducting inner tube.

[0023] S3. After the rubber scraps enter the heat-conducting inner tube, when there are local blockages or uneven forces, the feeding spiral with a variable pitch design swings under the cooperation of the universal shaft and the flexible coupling to eliminate or buffer the adverse states of blockages and uneven forces.

[0024] S4. The control system monitors the torque change of the first motor driving the feeding spiral in real time.

[0025] S5. When the rotation torque of the feeding spiral < T0, control the second motor to enter the torque-locking state: the torque of the second motor is locked, the position of its output shaft is fixed, the heat-conducting inner tube cannot rotate freely. When the first motor drives the feeding spiral to rotate, the friction between the rubber particles near the inner wall of the heat-conducting inner tube and the inner wall of the heat-conducting inner tube increases, and they move forward along the spiral path with the rotation of the feeding spiral, improving the output of the feeding spiral.

[0026] S6. When T0 <= the rotation torque of the feeding spiral < T1, enter the zero-torque state: the torque of the second motor is not locked, its output shaft can rotate freely, and the heat-conducting inner tube can also rotate freely. When the first motor drives the feeding spiral to rotate, under the action of the extrusion and friction of the rubber particles, the heat-conducting inner tube will rotate slightly, and the rotation direction is the same as that of the feeding spiral. The friction between the rubber particles near the inner wall of the heat-conducting inner tube and the inner wall of the heat-conducting inner tube decreases, and the forward speed of the rubber particles near the inner wall of the heat-conducting inner tube slows down, reducing the wear of the rubber particles on the feeding spiral and the inner wall of the heat-conducting inner tube.

[0027] S7. When the rotation torque of the feeding spiral >= T1, enter the synchronous forward rotation state: the second motor drives the heat-conducting inner tube to rotate, and the rotation direction is the same as that of the feeding spiral, further reducing the friction between the rubber particles and the inner wall of the heat-conducting inner tube and the output pressure of the feeding spiral, and reducing the wear of the overloaded rubber particles on the feeding spiral and the inner wall of the heat-conducting inner tube.

[0028] S8. The cavity temperature sensor monitors the temperature of the annular cavity gas in real time. When the temperature exceeds the standard, the annular cavity is cooled by the gas cooling circulation component.

[0029] Compared with the existing technology, the beneficial effects of the present invention are:

[0030] 1. This invention utilizes a variable-pitch feed screw design, coordinated with a universal shaft and flexible coupling, to enable the feed screw to swing when localized blockages or uneven force occur, effectively eliminating or mitigating these conditions and reducing pressure on the screw and the conveyor pipe. Furthermore, the drive control method utilizes three modes: locked torque, zero torque, and synchronous forward rotation, depending on the feed screw's rotational torque. These modes specifically reduce wear caused by rubber particles on the feed screw and the inner wall of the heat-conducting inner tube. For example, the zero torque mode reduces wear on the inner wall coating of the heat-conducting inner tube, while the synchronous forward rotation mode further reduces wear caused by overloaded rubber particles.

[0031] 2. In the present invention, a temperature control system is designed. According to the monitoring results of the annular cavity gas temperature sensor, when the temperature exceeds the standard, the cooling degree of the cold air flow is enhanced, the ambient temperature in the heat-conducting inner tube is lowered, the thermal expansion of the rubber particles is reduced, and the degree of squeezing between the rubber particles is reduced, thereby reducing the forward resistance of the feeding screw, while taking into account the feeding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the tire crushing material continuous supply device of the present invention.

[0033] Figure 2 It is a structural schematic diagram of the heat-insulating outer tube, the heat-conducting inner tube, the first motor, the second motor and related components in the present invention.

[0034] Figure 3 for Figure 2 Schematic diagram of the structure with a partial enlargement at point A in the middle.

[0035] Figure 4 for Figure 2 Schematic diagram of the structure with a partial enlargement at point B.

[0036] Figure 5 for Figure 4 Schematic diagram of the structure with a partial enlargement at point C in the middle.

[0037] Among them: 1-crushing equipment, 101-crushing cavity; 2-insulated outer tube, 201-end cover, 202-inner retaining ring, 203-discharge hole, 204-air inlet, 205-air outlet, 206-discharge pipe, 207-discharge cavity, 208-gear embedding gap; 3-heat-conducting inner tube, 301-heat dissipation fin; 4-feeding screw; 5-universal joint; 6-flexible coupling; 7-first motor; 8-first bearing; 9-second bearing; 10-retaining ring; 11-ring cavity; 12-end cavity, 13-collection box; 14-cavity temperature sensor; 15-circulating air pump; 16-inlet temperature sensor; 17-cooling module; 18-outlet temperature sensor; 19-second motor; 20-gear reducer; 21-gear ring; 22-linkage gear. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0039] Example 1: The present invention designs a tire crushing material continuous feeding device, such as Figure 1 、 Figure 4 It mainly includes crushing equipment 1, insulation outer tube 2, heat-conducting inner tube 3, feeding screw 4, flexible coupling 6, first motor 7, second motor 19, gas cooling circulation assembly and other components. The specific structure configuration is as follows:

[0040] like Figure 1 、 Figure 3 、 Figure 4 The insulated outer tube 2 is fixed at one end to the periphery of the outlet of the crushing chamber 101 at the bottom of the crushing equipment 1, providing connection and support. The other end is equipped with an end cap 201. The flexible coupling 6 in the center of the end cap connects to the feed screw 4 to transmit power. The discharge pipe 206 on the annular side is the discharge channel for the crushed material. The insulated outer tube 2 also forms an annular cavity 11 with the heat-conducting inner tube 3, providing space for cooling gas to circulate, lowering the temperature of the heat-conducting inner tube 3 and reducing thermal expansion of rubber particles and inter-particle compression, thereby reducing forward resistance of the feed screw 4 and improving feeding efficiency. Furthermore, the inner retaining ring 202 on the inside of the end cap 201 forms a discharge cavity 207 with the heat-conducting inner tube 3, facilitating centralized discharge of crushed material. The discharge hole 203 on the insulated outer tube 2 discharges rubber powder that enters the end cavity 12, preventing it from adversely affecting the equipment. A transparent collection box 13 (made of a transparent material) outside the discharge hole 203 allows for easy monitoring and timely cleaning of the collection status.

[0041] like Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 The heat-conducting inner tube 3 is located inside the heat-insulating outer tube 2. One end is rotatably connected to the outlet of the crushing chamber 101, and the other end extends to align with the discharge pipe 206, which is used to transport the crushed rubber material. The gear ring 21 fixed to the side end facing the discharge pipe 206 engages with the linkage gear 22 at the output end of the gear reducer 20, and rotates under the drive of the second motor 19. The heat-conducting inner tube 3 is made of copper-aluminum alloy, which has excellent thermal conductivity and is conducive to heat dissipation. The heat dissipation fins 301 on its outer annular surface are fully stirred and contacted with the airflow in the annular cavity 11 when the heat-conducting inner tube 3 rotates, further improving the heat exchange efficiency and enhancing the cooling effect on the crushed rubber material.

[0042] like Figure 1 、 Figure 2 、 Figure 4The feeding screw 4 is coaxially arranged with the heat-conducting inner tube 3, with one end connected to the universal shaft 5 embedded in the side panel of the crushed material chamber 101, and the other end passing through the heat-conducting inner tube 3 and connected to the flexible coupling 6. The pitch of the feeding screw 4 gradually decreases from the end of the universal shaft 5 to the flexible coupling 6. This variable pitch design is of great significance. When the rubber crumbs are locally clogged or the force is uneven in the heat-conducting inner tube 3, the feeding screw 4 can swing with the cooperation of the universal shaft 5 and the flexible coupling 6. The swing range is up to ±5° with the universal shaft 5 as the center through the flexible coupling 6. This swing can effectively eliminate or buffer the adverse conditions of blockage and uneven force, reduce the pressure on the screw and the conveying pipeline, and ensure a smooth conveying process.

[0043] like Figure 1 、 Figure 2 、 Figure 4 The first motor 7: The output shaft is connected to the flexible coupling 6, which provides rotational power for the feeding screw 4, drives the feeding screw 4 to transport the rubber crumbs in the crushing cavity 101 to the heat-conducting inner tube 3, and is the main power source for the entire conveying process.

[0044] like Figure 1 、 Figure 2 、 Figure 4 Second motor 19 is fixedly mounted on the outside of the insulated outer tube 2 and works in conjunction with gear reducer 20. It controls the rotation of the heat-conducting inner tube 3 based on the torque of the feed screw. A brushless DC motor with a freely rotating output shaft in the power-off state is used, facilitating state control requirements under different torque conditions.

[0045] like Figure 2 、 Figure 4 、 Figure 5 Gear reducer 20 is fixedly mounted on the outside of the insulated outer tube 2. Its input end is connected to the output shaft of the second motor 19. A linkage gear 22 at its output end extends through the gear insertion notch 208 in the insulated outer tube 2 and into the interior, meshing with the gear ring 21 of the heat-conducting inner tube 3. The gear reducer 20 adjusts the output torque of the second motor 19 to better match the rotation requirements of the heat-conducting inner tube 3, ensuring stable rotation of the heat-conducting inner tube 3 under different operating conditions.

[0046] like Figure 1 、 Figure 3 、 Figure 4, Bearing and material blocking structure: The first bearing member 8 between the heat-conducting inner tube 3 and the outlet of the crushing chamber 101, and the second bearing member 9 between the heat-conducting inner tube 3 and the heat-insulating outer tube 2 play a role in supporting and reducing friction, ensuring the smooth rotation of the heat-conducting inner tube 3. The two material blocking ring grooves 10 between the heat-conducting inner tube 3 and the heat-insulating outer tube 2 adopt a labyrinth structure, effectively blocking rubber particles from entering the annular chamber 11 and preventing rubber particles from interfering with the cooling air flow circulation and the operation of the equipment. An end chamber 12 is formed between the first bearing member 8 and an adjacent material blocking ring groove 10. The discharge hole 203 opened on the heat-insulating outer tube 2 is communicated with the end chamber 12, and the rubber powder entering the end chamber 12 can be discharged to prevent its accumulation from affecting the performance of the equipment.

[0047] Such as Figure 1 , Figure 2 , Figure 3 , Gas cooling circulation component: The air inlet 204 and the air outlet 205 on the outer side of the heat-insulating outer tube 2 are communicated with the annular chamber 11. The air outlet 205 is connected to the circulating air pump 15 through a trachea. The circulating air pump 15 is connected to the temperature reduction module 17, and the temperature reduction module 17 is then connected to the air inlet 204 through a trachea to form a cooling gas circulation loop. The intake air temperature sensor 16 on the inlet side of the temperature reduction module 17 and the outlet air temperature sensor 18 on the outlet side are used to monitor the gas temperature and provide data support for controlling the operation of the temperature reduction module 17. The cavity temperature sensor 14 monitors the gas temperature in the annular chamber 11 in real time. When the temperature exceeds the standard, the control system adjusts the circulating air pump 15 and the temperature reduction module 17 to enhance the cooling degree of the cold air flow, reduce the ambient temperature in the heat-conducting inner tube 3, reduce the thermal expansion of rubber particles, reduce the extrusion degree between particles, and further reduce the forward resistance of the feeding spiral 4, improve the feeding efficiency, and at the same time reduce the wear of components such as the heat-conducting inner tube 3 and the feeding spiral 4.

[0048] Embodiment 2. The present invention also designs a driving and control method for a continuous supply device of tire crushing materials, and the main working principle is as follows:

[0049] First, preset relevant torque parameters: The control system presets the standard torque T0 and the full-load torque T1 (T0 < T1) when the first motor 7 drives the feeding spiral 4 to rotate. These two torque values are important bases for judging the working state of the feeding spiral 4 and controlling the second motor 19.

[0050] Second, torque-locked state (feeding spiral rotation torque < T0): At this time, there are relatively few rubber particles in the heat-conducting inner tube 3. The torque of the second motor 19 is locked, and the position of the output shaft is fixed, and the heat-conducting inner tube 3 cannot rotate freely. When the first motor 7 drives the feeding spiral 4 to rotate, the friction force between the rubber particles close to the inner wall of the heat-conducting inner tube 3 and the inner wall of the heat-conducting inner tube 3 increases, and they move forward along the spiral path along with the rotation of the feeding spiral 4, increasing the output of the feeding spiral 4 and ensuring efficient feeding even when the material is less.

[0051] Third, zero-torque state (T0 ≤ rotational torque of the feeding screw < T1): It indicates that the rubber particles in the heat-conducting inner tube 3 start to increase. The torque of the second motor 19 is not locked, and the output shaft can rotate freely, and the heat-conducting inner tube 3 can also rotate freely. When the first motor 7 drives the feeding screw 4 to rotate, under the extrusion and frictional force of the rubber particles, the heat-conducting inner tube 3 undergoes a slight rotation, and the rotation direction is the same as that of the feeding screw 4. In this state, the frictional force between the rubber particles near the inner wall of the heat-conducting inner tube 3 and the inner wall of the heat-conducting inner tube 3 decreases, and the forward speed slows down, reducing the wear of the rubber particles on the feeding screw 4 and the inner wall of the heat-conducting inner tube 3. At the same time, the output pressure of the feeding screw 4 is also reduced, balancing the pressure and wear problems during the conveying process.

[0052] Fourth, synchronous forward rotation state (rotational torque of the feeding screw ≥ T1): It means that there are too many rubber particles in the heat-conducting inner tube 3, which may cause a greater burden on both the feeding screw 4 and the inner wall of the heat-conducting inner tube 3. At this time, the second motor 19 drives the heat-conducting inner tube 3 to rotate, and the rotation direction is the same as that of the feeding screw 4, further reducing the frictional force between the rubber particles and the inner wall of the heat-conducting inner tube 3, reducing the wear of the overloaded rubber particles on the feeding screw 4 and the inner wall of the heat-conducting inner tube 3. At the same time, the output pressure of the feeding screw 4 is reduced, protecting the normal operation of the equipment under high load conditions.

[0053] Finally, overall temperature control: The cavity temperature sensor 14 monitors the gas temperature in the annular cavity 11 in real time. When the temperature exceeds the standard, the annular cavity 11 is cooled through the gas cooling circulation component. The ambient temperature in the heat-conducting inner tube 3 is reduced, the thermal expansion of the rubber particles is reduced, the extrusion degree between the rubber particles is reduced, the forward resistance of the feeding screw 4 is reduced, the feeding efficiency is improved, the wear of the equipment components is reduced, and the stability and efficiency of the entire conveying process are ensured.

[0054] In summary, the continuous feeding device and driving and control method for tire crushing materials of the present invention effectively solve the key problems in the conveying process of tire crushing materials through innovative structural design and intelligent control strategies, and are of great significance for promoting the efficient development of the tire recycling and processing industry.

[0055] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A tire crushing material continuous feeding device, characterized in that: include: The heat-insulating outer tube (2) has one end fixedly connected to the periphery of the outlet of the crushing chamber (101) at the bottom of the crushing equipment (1), and the other end is provided with a flexible coupling (6). The ring side of the heat-insulating outer tube (2) is provided with a discharge pipe (206); Heat-conducting inner tube (3): located inside the heat-insulating outer tube (2), one end of which is rotatably connected to the outlet of the crushing chamber (101) at the bottom of the crushing device (1), and the other end of which is extended to a position aligned with the discharge pipe (206); An annular cavity (11) communicating with the gas cooling cycle component is formed between the heat-conducting inner tube (3) and the heat-insulating outer tube (2), and a cavity temperature sensor (14) for detecting the gas temperature in the annular cavity (11) is embedded in the heat-insulating outer tube (2); Feeding screw (4): coaxially arranged with the heat-conducting inner tube (3), one end of which is connected to the universal shaft (5) embedded in the side plate of the crushing chamber (101), and the other end of which passes through the heat-conducting inner tube (3) and is connected to the flexible coupling (6); The pitch of the feeding screw (4) gradually decreases from the end of the universal shaft (5) to the flexible coupling (6); First motor (7): its output shaft is connected to the flexible coupling (6), driving the feeding screw (4) to rotate; The second motor (19) is fixed to the outside of the heat-insulating outer tube (2) and has an output side that is rotatably connected to the heat-conducting inner tube (3).

2. The tire crushing material continuous feeding device according to claim 1, characterized in that: A first bearing member (8) is arranged between the heat-conducting inner tube (3) and the outlet of the crushing chamber (101), and a second bearing member (9) is arranged between the heat-conducting inner tube (3) and the heat-insulating outer tube (2); Two material retaining rings (10) are further arranged between the heat-conducting inner tube (3) and the heat-insulating outer tube (2); The annular cavity (11) for airflow circulation is located between the two material blocking rings (10), and the outer annular surface of the heat-conducting inner tube (3) is provided with a plurality of staggered heat dissipation fins (301); An end cavity (12) is formed between the first bearing member (8) and an adjacent retaining ring (10), the heat-insulating outer tube (2) is provided with a discharge hole (203) communicating with the end cavity (12), and a collection box (13) is arranged outside the discharge hole (203).

3. The tire crushing material continuous supply device according to claim 1, characterized in that: With the universal joint (5) as the center of the circle, the swing range of the feeding screw (4) through the flexible coupling (6) is ±5°.

4. The tire crushing material continuous supply device according to claim 1, characterized in that: The other end of the heat-insulating outer tube (2) is provided with an end cover (201), and the flexible coupling (6) is arranged at the center of the end cover (201); An inner retaining ring (202) is fixedly mounted on the inner side of the end cover (201) of the heat-insulating outer tube (2), and a discharge cavity (207) located directly above the discharge pipe (206) is formed between the inner retaining ring (202) and the heat-conducting inner tube (3).

5. The tire crushing material continuous feeding device according to claim 1, characterized in that: The gas cooling cycle components are configured as follows: An air inlet (204) and an air outlet (205) communicating with the annular cavity (11) are arranged on the outer side of the heat-insulating outer pipe (2). The air outlet (205) is connected to a circulating air pump (15) through a trachea. The circulating air pump (15) is connected to a cooling module (17) through a trachea. The cooling module (17) is connected to the air inlet (204) through a trachea; Among them, an air inlet temperature sensor (16) is arranged on the inlet side of the cooling module (17), and an air outlet temperature sensor (18) is arranged on the outlet side; Among them, the heat-conducting inner pipe (3) is made of copper-aluminum alloy material.

6. A continuous supply device for tire crushing materials according to claim 1, characterized in that: A toothed ring (21) is fixedly installed at the side end of the heat-conducting inner pipe (3) facing the discharge pipe (206); Gear reducer (20): fixedly installed on the outer side of the heat-insulating outer pipe (2); Among them, the output shaft of the second motor (19) is connected to the input end of the gear reducer (20), and a linkage gear (22) configured to extend into the heat-insulating outer pipe (2) and engage with the toothed ring (21) is arranged at the output end of the gear reducer (20); A gear embedding notch (208) is provided at the connection position of the heat-insulating outer pipe (2) and the gear reducer (20), and the linkage gear (22) movably passes through the gear embedding notch (208) and extends into the heat-insulating outer pipe (2); 7. A continuous supply device for tire crushing materials according to claim 1, characterized in that: The second motor (19) is a brushless DC motor whose output shaft can rotate freely under a power-off state.

8. A control method for the tire crushing material continuous feeding device according to any one of claims 1 to 7, characterized in that: It includes the following content: S1. The control system presets the standard torque T0 and full-load torque T1 when the first motor (7) drives the feeding spiral (4) to rotate, where T0 < T1; S2. Start the first motor (7), which drives the feeding spiral (4) to rotate. The feeding spiral (4) conveys a large amount of rubber crushing materials in the crushing chamber (101), and the rubber crushing materials enter the heat-conducting inner pipe (3); S3. After the rubber crushing materials enter the heat-conducting inner pipe (3), when local blockage or uneven force occurs, the feeding spiral (4) with a variable pitch design swings under the cooperation of the universal shaft (5) and the flexible coupling (6) to eliminate or buffer the adverse states of blockage and uneven force; S4. The control system monitors the torque change situation in real time when the first motor (7) drives the feeding spiral (4) to rotate; S5. When the rotation torque of the feeding spiral (4) < T0, control the second motor (19) to enter the torque locking state: the torque of the second motor (19) is locked, and the position of its output shaft is fixed. When the first motor (7) drives the feeding spiral (4) to rotate, the friction force between the rubber particles near the inner wall of the heat-conducting inner pipe (3) and the inner wall of the heat-conducting inner pipe (3) increases, and they move forward along the spiral path along with the rotation of the feeding spiral (4), improving the output of the feeding spiral (4); S6. When T0 ≤ the rotational torque of the feeding screw (4) < T1, it enters the zero-torque state: the torque of the second motor (19) is not locked, its output shaft can rotate freely, and the heat-conducting inner tube (3) can also rotate freely. When the first motor (7) drives the feeding screw (4) to rotate, due to the extrusion and frictional force of the rubber particles, the heat-conducting inner tube (3) will undergo a slight rotation, and the rotation direction is the same as the rotation direction of the feeding screw (4). The frictional force between the rubber particles near the inner wall of the heat-conducting inner tube (3) and the inner wall of the heat-conducting inner tube (3) decreases, and the forward speed of the rubber particles near the inner wall of the heat-conducting inner tube (3) slows down, reducing the wear degree of the rubber particles on the inner walls of the feeding screw (4) and the heat-conducting inner tube (3); S7. When the rotational torque of the feeding screw (4) ≥ T1, it enters the synchronous forward rotation state: the second motor (19) drives the heat-conducting inner tube (3) to rotate, and the rotation direction is the same as that of the feeding screw (4), further reducing the frictional force between the rubber particles and the inner wall of the heat-conducting inner tube (3) and the output pressure of the feeding screw (4), and reducing the wear degree of the overloaded rubber particles on the inner walls of the feeding screw (4) and the heat-conducting inner tube (3); S8. The cavity temperature sensor (14) monitors the gas temperature in the annular cavity (11) in real time. When the temperature exceeds the standard, the annular cavity (11) is cooled by the gas cooling circulation component.

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