A multi-stage crushing device and crushing method for processing waste tires into rubber powder

Abstract

The present invention relates to the technical field of waste tire recycling, and more specifically, to a multi-stage crushing device and a crushing method for processing waste tires into rubber powder, comprising a tire transport device, a roller crushing device arranged at the rear side of the tire transport device, and a tire pre-processing device arranged between the tire transport device and the roller crushing device. The multi-stage crushing device and the crushing method for processing waste tires into rubber powder control the cylinder in the tire pre-processing device to contract periodically, and transport the tires to the roller crushing device in sequence, and in the process of transportation, the rubber tires are cut by a tire cutting saw, and before entering the roller crushing device, the overall structure of the tire is destroyed, so that the tire is easier to capture and crush, thereby improving the stability of the crushing process, reducing the workload of the roller crushing device, and saving the investment in additional equipment.

Description

Technical Field

[0001] The invention relates to the technical field of waste tire recycling, in particular to a multi-stage crushing device and a crushing method for processing waste tires into rubber powder. Background Art

[0002] Waste tires can be efficiently converted into high-quality rubber powder through innovative processing. This process first uses professional crushing equipment to finely crush the tires, effectively solving the problem of the steel wire structure inside the tires and ensuring sufficient crushing. Subsequently, advanced separation technology is used to remove impurities such as steel wire and fiber to obtain pure rubber particles. These rubber powders are not only widely used in the construction of runways, floors, etc., but can also be used in the production of modified plastics and rubber products to achieve resource recycling.

[0003] The patent with publication number CN107185679B discloses a waste tire crushing device for rubber and plastic, including a crushing box, etc., a placing mechanism is symmetrically arranged in the middle of the left and right sides of the crushing box, a driving mechanism is arranged on the crushing box, and a crushing knife is evenly connected to the left part of the driving mechanism. The placing mechanism is located at the front side of the driving mechanism. The present invention designs a waste tire crushing device for rubber and plastic. The arrangement of the placing mechanism and the driving mechanism is conducive to conveniently and thoroughly crushing the waste tires. The arrangement of the second rotating plate is conducive to conveniently removing the tire fragments that fall on the bottom of the crushing box. The arrangement of the third rotating plate is conducive to preventing the tire fragments from splashing during the crushing process.

[0004] In the multi-stage crushing process of waste tires, the tires are often fed into the roller crusher through an inclined conveyor belt. However, due to the large size of the tires and the complete internal steel wire structure, the crushing is often insufficient, which increases the workload of the crusher. If the tire ring cutting machine or wire drawing machine is used to remove the steel wire, the crushing effect can be improved, but the equipment, process and labor input will be increased. In addition, in order to ensure smooth transportation, the slope of the inclined conveyor belt is set to be gentle, which makes the conveyor belt occupy a large area and reduces the space utilization rate of the processing workshop.

[0005] In view of this, we propose a multi-stage crushing device and a crushing method for processing waste tires into rubber powder. Summary of the invention

[0006] The object of the present invention is to provide a multi-stage crushing device and a crushing method for processing waste tires into rubber powder, so as to solve the problems raised in the above background technology.

[0007] To achieve the above object, on the one hand, the present invention provides the following technical solutions:

[0008] A multi-stage crushing device for processing waste tires into rubber powder, comprising a tire transport device, a roller crushing device arranged at the rear side of the tire transport device, and a tire pre-processing device arranged between the tire transport device and the roller crushing device;

[0009] The tire pre-processing device comprises a fixing part, a tire transport mechanism arranged inside the fixing part, and a lifting mechanism arranged at the front end of the tire transport mechanism;

[0010] The fixing part includes a fixing frame, a tire cutting saw arranged at the center of the bottom surface of the fixing frame, four limiting protrusions distributed in a matrix, and a plurality of pressure springs arranged on the outer side walls of the limiting protrusions;

[0011] The tire transport mechanism comprises a cylinder, a mobile bracket that moves with the telescopic rod of the cylinder, two symmetrically arranged connecting plates that change their own inclination angles as the position of the mobile bracket changes, tire clamping parts respectively arranged at the front ends of the two connecting plates, a mobile slider arranged at the front ends of the tire clamping parts, and a fixed tooth plate that moves as the mobile slider moves;

[0012] The tire clamping part includes a clamping plate, a wave plate disposed inside the clamping plate, a rubber pad disposed inside the bending part of the wave plate, an outwardly protruding bracket disposed on the outer side wall of the rear end of the clamping plate, a placement rack disposed on the outer side wall of the front end of the clamping plate, and a limiting slider disposed on the outer side wall of the placement rack;

[0013] The lifting mechanism includes a tire lifting frame, a screw rod arranged on the outside of the left and right ends of the tire lifting frame, a rod end gear sleeved on the outer wall of the top end of the screw rod, a docking gear that drives the rod end gear to rotate by its own rotation, and an outer cover sleeved on the outside of the tire lifting frame.

[0014] In the technical solution of the present invention, frame through grooves that penetrate vertically are opened on the top surfaces at the front and rear ends of the fixed frame, and limiting sliding grooves that penetrate vertically are opened on the left and right sides of the frame through groove located at the front end of the fixed frame. A plurality of placement grooves for placing limiting protrusions are opened on the inner side wall of the fixed frame, and the corners of the bottom surface of the fixed frame are fixedly connected to the support frame by bolts.

[0015] In the technical solution of the present invention, the tire cutting saw is fixedly connected to the bottom surface of the fixed frame by bolts, the horizontal height of the top of the cutting saw in the tire cutting saw is the same as the horizontal height of the fixed frame and the top frame opening, the limiting protrusion is slidably connected to the inside of the placement groove, and the two ends of the pressure spring are respectively welded and fixed to the inner groove wall of the placement groove and the outer wall of the limiting protrusion.

[0016] In the technical solution of the present invention, the cylinder is fixedly connected to the inner frame wall of the fixed frame body by bolts, the moving bracket is fixedly connected to the end position of the cylinder telescopic rod by bolts, and one end of the connecting plate is rotatably connected to the outer side of the moving bracket.

[0017] In the technical solution of the present invention, the clamping plate body is slidably connected to the inner bottom surface of the fixed frame body, the corrugated plate body is fixedly welded to the clamping plate body, and the transverse section of the rubber pad is arc-shaped and adhesively fixed to the inner side wall of the bent part of the corrugated plate body.

[0018] In the technical solution of the present invention, the outward convex bracket and the placing rack are both fixedly welded to the outer side wall of the clamping plate body, the outward convex bracket is rotatably connected to the other end of the connecting plate, the limiting slider is integrally formed with the placing rack, and a universal wheel is fixedly clamped to the outer side wall of the rear end of the clamping plate body.

[0019] In the technical solution of the present invention, the moving slider is slidably connected to the inner bottom surface of the fixed frame body. A block chute for providing a moving range for the limiting slider and a limiting groove for providing a placing range for the limiting convex block are provided on the outer side wall of the moving slider. The top convex block of the fixed toothed plate is fixedly connected to the bottom surface of the moving slider by bolts.

[0020] In the technical solution of the present invention, the longitudinal section of the tire lifting frame is in a U shape, the convex blocks at the left and right ends of the tire lifting frame are threadedly connected to the lead screw, and the top end of the lead screw is rotatably connected to the bottom surface of the fixed frame body.

[0021] In the technical solution of the present invention, the rod end gear is fixedly connected to the outer side wall of the lead screw by a pin, the docking gear meshes with the rod end gear and is rotatably connected to the bottom surface of the fixed frame body, the docking gear meshes with the fixed toothed plate, and the outer sleeve cover body is fixedly connected to the bottom surface of the fixed frame body by bolts. Through holes penetrating inside and outside are provided on the outer side walls at the left and right ends of the outer sleeve cover body.

[0022] On the other hand, the present invention provides a multi-stage crushing device method for processing waste tires into rubber powder. Using the above-mentioned multi-stage crushing device for processing waste tires into rubber powder, the method includes the following steps:

[0023] S1. First, the operator sequentially places the tires stacked in the workshop on the top surface of the tire transportation device, and moves the tires towards the lifting mechanism in the tire pretreatment device through the tire transportation device;

[0024] S2, after the waste tires are fed onto the top surface of the fixed frame, the cylinder in the tire transport mechanism is activated to drive the movable bracket to move forward inside the fixed frame, thereby changing the inclination angles of the two connecting plates, thereby causing the two sets of tire clamping parts to move in opposite directions;

[0025] S3, after the tire clamping part moves to the outer end of the movable slider, it starts to squeeze the movable slider and moves toward the front end together, thereby driving the fixed tooth plate to move toward the front end;

[0026] S4. Then, the moving fixed tooth plate drives the docking gear to rotate, which drives the rod end gear to rotate, and then drives the screw rod to rotate, so that the tire lifting frame moves upward inside the outer cover;

[0027] S5, after the tire lifting frame sends the waste tire into the interior of the fixed frame, the telescopic rod of the control cylinder begins to shrink, and the two sets of tire clamping parts are driven to move toward each other through the mobile bracket and the connecting plate;

[0028] S6. The two sets of rubber pads at the front end of the two wave plates will clamp the tire. Then, the moving slider drives the tire to move toward the roller crushing device under the traction force of the cylinder. At this time, the moving slider will restore the position of the tire lifting frame;

[0029] S7, repeatedly controlling the cylinder to allow it to contract periodically, and cutting the batch of waste tires into halves by the tire cutting saw, and sending the cut tires to the top of the frame through slot at the rear side;

[0030] S8. Subsequently, the cut tire will fall into the inside of the double-roll crushing device, and the double-roll crushing device will crush the tire into blocks, and then the crushed tire will be sent to the inside of the wire sorting machine to decompose the tire blocks into rubber particles and decompose the steel wire;

[0031] S9. Next, the rubber particles are sent to a fine crusher for further crushing, and then transported to the inside of a fiber separation device through a fan, and the fibers of the rubber particles are sorted out. Subsequently, the rubber particles free of impurities are sent to the inside of a grinding mill through a screw conveyor, and the rubber particles are processed into rubber powder through the grinding mill.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 1. The multi-stage crushing device and crushing method for processing waste tires into rubber powder controls the cylinder in the tire pre-processing device to contract periodically, and transports the tires to the roller crushing device in sequence. During the transportation, the rubber tires are cut by a tire cutting saw, and before entering the roller crushing device, the overall structure of the tire is destroyed, making the tire easier to capture and crush, thereby improving the stability of the crushing process, reducing the workload of the roller crushing device, and saving the investment in additional equipment.

[0034] 2. In the multi-stage crushing device and crushing method for processing waste tires into rubber powder, when the cylinder controls the tire clamping part to move forward and backward, the fixed tooth plate moving together will drive the screw in the lifting mechanism to rotate, and the tires will be periodically transported in a vertical manner, thereby reducing the area occupied by the transportation device and increasing the space utilization rate of the processing workshop. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 It is a structural schematic diagram of the double-roll crushing device in the present invention;

[0037] Figure 3 It is a structural schematic diagram of the tire pre-treatment device in the present invention;

[0038] Figure 4 It is a structural schematic diagram of the fixing part in the present invention;

[0039] Figure 5 For the present invention Figure 4 A magnified schematic diagram of part A;

[0040] Figure 6 It is a structural schematic diagram of the tire transportation mechanism in the present invention;

[0041] Figure 7 It is a structural schematic diagram of the tire clamping part in the present invention;

[0042] Figure 8 It is a partial structural schematic diagram of the tire transportation mechanism in the present invention;

[0043] Fig. 9 It is a structural schematic diagram of the lifting mechanism in the present invention;

[0044] Description of reference numerals:

[0045] 100. Tire transport device;

[0046] 200. Roller crushing device;

[0047] 300, tire pre-processing device; 310, fixing part; 311, fixing frame; 3110, frame through groove; 3111, limiting slide groove; 3112, placement groove; 312, support frame; 313, tire cutting saw; 314, limiting protrusion; 315, pressure spring; 320, tire transport mechanism; 321, cylinder; 322, movable bracket; 323, connecting plate; 324, tire clamping part; 3240, clamping plate; 324 1. Wave plate body; 3242. Rubber pad; 3243. Outer convex bracket; 3244. Placement rack; 3245. Limiting slider; 3246. Universal wheel; 325. Moving slider; 3250. Block slide groove; 3251. Limiting groove; 326. Fixed tooth plate; 330. Lifting mechanism; 331. Tire lifting frame; 332. Screw rod; 333. Rod end gear; 334. Docking gear; 335. Outer cover body; 3350. Cover body through groove. DETAILED DESCRIPTION

[0048] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] See also Figure 1-Figure 9 As shown, this embodiment provides a technical solution:

[0050] A multi-stage crushing device for processing waste tires into rubber powder, comprising a tire transport device 100, a roller crushing device 200 arranged at the rear side of the tire transport device 100, and a tire pre-processing device 300 arranged between the tire transport device 100 and the roller crushing device 200;

[0051] In this embodiment, Figure 3-Figure 5 As shown, the tire pre-processing device 300 includes a fixing portion 310, a tire transport mechanism 320 disposed inside the fixing portion 310, and a lifting mechanism 330 disposed at the front end of the tire transport mechanism 320;

[0052] Specifically, the fixing part 310 includes a fixing frame 311, a tire cutting saw 313 disposed at the center of the bottom surface of the fixing frame 311, four limiting protrusions 314 distributed in a matrix, and a plurality of pressure springs 315 disposed on the outer side walls of the limiting protrusions 314;

[0053] Furthermore, frame through grooves 3110 that pass through the fixed frame 311 are provided on the top surfaces at the front and rear ends, and limiting sliding grooves 3111 that pass through the fixed frame 311 are provided on the left and right sides of the frame through grooves 3110 located at the front end, and a plurality of placement grooves 3112 for placing limiting protrusions 314 are provided on the inner side wall of the fixed frame 311, and the support frame 312 is fixedly connected to the corners of the bottom surface of the fixed frame 311 by bolts.

[0054] Furthermore, the tire cutting saw 313 is fixedly connected to the bottom surface of the fixed frame 311 by bolts, the horizontal height of the top of the cutting saw in the tire cutting saw 313 is the same as the horizontal height of the fixed frame 311 and the top frame opening, the limiting protrusion 314 is slidably connected to the inside of the placement groove 3112, and the two ends of the pressure spring 315 are respectively welded and fixed to the inner groove wall of the placement groove 3112 and the outer wall of the limiting protrusion 314.

[0055] Furthermore, the fixed frame 311 is used to ensure the strength of the overall structure of the fixing part 310, the frame through groove 3110 is used to provide a passage range for the tire, the limiting slide groove 3111 is used to limit the movement range of the structure inside the tire transportation mechanism 320, and the placement groove 3112 is used to provide a placement range for the limiting protrusion 314 and the pressure spring 315. After the tire cutting saw 313 is started, it is used to cut the tire into two halves. Under the action of the pressure spring 315, the end of the limiting protrusion 314 extends to the outside of the placement groove 3112, thereby limiting the position of the internal structure of the tire transportation mechanism 320.

[0056] In this embodiment, Figure 6-Figure 8 As shown, the tire transport mechanism 320 includes a cylinder 321, a mobile bracket 322 that moves with the telescopic rod of the cylinder 321, two symmetrically arranged connecting plates 323 that change their own inclination angles as the position of the mobile bracket 322 changes, tire clamping parts 324 respectively arranged at the front ends of the two connecting plates 323, a moving slider 325 arranged at the front ends of the tire clamping parts 324, and a fixed tooth plate 326 that moves as the moving slider 325 moves;

[0057] Specifically, the cylinder 321 is fixedly connected to the inner frame wall of the fixed frame 311 by bolts, the movable bracket 322 is fixedly connected to the end position of the telescopic rod of the cylinder 321 by bolts, and one end of the connecting plate 323 is rotatably connected to the outer side of the movable bracket 322.

[0058] Furthermore, after the cylinder 321 in the tire transport mechanism 320 is activated, the movable bracket 322 is driven to move forward inside the fixed frame 311, thereby changing the inclination angle of the two connecting plates 323, thereby causing the two sets of tire clamping parts 324 to move in opposite directions.

[0059] In this embodiment, Figure 7 As shown, the tire clamping part 324 includes a clamping plate 3240, a wave plate 3241 disposed on the inner side of the clamping plate 3240, a rubber pad 3242 disposed on the inner side of the bending part of the wave plate 3241, an outer protruding bracket 3243 disposed on the outer side wall of the rear end of the clamping plate 3240, a placement rack 3244 disposed on the outer side wall of the front end of the clamping plate 3240, and a limiting slider 3245 disposed on the outer side wall of the placement rack 3244;

[0060] Specifically, the clamping plate 3240 is slidably connected to the inner bottom surface of the fixed frame 311, the wave plate 3241 is welded and fixed to the clamping plate 3240, and the rubber pad 3242 has an arc-shaped transverse cross-section and is adhesively fixed to the inner wall of the bend of the wave plate 3241.

[0061] Furthermore, the protruding bracket 3243 and the placement rack 3244 are both welded and fixed to the outer wall of the clamping plate body 3240, the protruding bracket 3243 is rotatably connected to the other end of the connecting plate 323, the limiting slider 3245 and the placement rack 3244 are integrally formed, and a universal wheel 3246 is clamped and fixed on the rear end outer wall of the clamping plate body 3240.

[0062] Furthermore, the clamping plate 3240 is used to provide a fixed interval for the wave plate 3241, the rubber pad 3242 can stably clamp the tire, the protruding bracket 3243 is used to provide a moving interval for the other end of the connecting plate 323, the limiting slider 3245 of the placement frame 3244 is used to move inside the moving slider 325, and the universal wheel 3246 is used to assist the overall movement of the clamping plate 3240.

[0063] In this embodiment, Figure 8 As shown, the movable slider 325 is slidably connected to the inner bottom surface of the fixed frame 311, and the outer wall of the movable slider 325 is provided with a block slide groove 3250 for providing a moving range for the limit slider 3245 and a limit groove 3251 for providing a placement range for the limit protrusion 314, and the top surface protrusion of the fixed tooth plate 326 is fixedly connected to the bottom surface of the movable slider 325 by bolts;

[0064] Furthermore, the limiting groove 3251 on the movable slider 325 cooperates with the limiting protrusion 314, so that after the tire clamping part 324 is initially subjected to the force of the cylinder, a stable moving platform can be provided for the tire clamping part 324, and when the limiting slider 3245 moves to the end of the groove wall of the block slide groove 3250, it can move with the force of the cylinder.

[0065] In this embodiment, Fig. 9As shown in the figure, the tire lifting mechanism 330 includes a tire lifting frame 331, lead screws 332 arranged on the outer sides of the left and right ends of the tire lifting frame 331, rod end gears 333 sleeved on the outer side walls of the tops of the lead screws 332, docking gears 334 that drive the rod end gears 333 to rotate through their own rotation, and an outer cover body 335 sleeved on the outer side of the tire lifting frame 331;

[0066] Specifically, the longitudinal section of the tire lifting frame 331 is in a C shape, the bumps at the left and right ends of the tire lifting frame 331 are threadedly connected to the lead screws 332, and the tops of the lead screws 332 are rotatably connected to the bottom surface of the fixed frame body 311.

[0067] Furthermore, the rod end gears 333 are fixedly connected to the outer side walls of the lead screws 332 through pins, the docking gears 334 are meshed with the rod end gears 333 and rotatably connected to the bottom surface of the fixed frame body 311, the docking gears 334 are meshed with the fixed toothed plates 326, the outer cover body 335 is fixedly connected to the bottom surface of the fixed frame body 311 through bolts, and through holes 3350 that penetrate inside and outside are formed on the outer side walls of the left and right ends of the outer cover body 335.

[0068] Furthermore, when the fixed toothed plate 326 moves forward together with the moving slider 325, it will drive the docking gear 334 to rotate, and then drive the rod end gear 333 to rotate, and further drive the lead screw 332 to rotate, so that the tire lifting frame 331 moves upward inside the outer cover body 335. After the tire lifting frame 331 sends the waste tire into the inside of the fixed frame body 311, the telescopic rod of the control cylinder 321 starts to contract, and through the moving bracket 322 and the connecting plate 323, the two groups of tire clamping parts 324 are driven to move towards each other.

[0069] A multi-stage crushing method for processing waste tires into rubber powder, using the above multi-stage crushing device for processing waste tires into rubber powder, includes the following steps:

[0070] S1. First, the operator sequentially places the tires stacked in the workshop on the top surface of the tire transportation device 100, and moves the tires towards the tire lifting mechanism 330 in the tire pretreatment device 300 through the tire transportation device 100;

[0071] S2. Subsequently, after the waste tire is sent to the top surface of the fixed frame body 311, the cylinder 321 in the tire transportation mechanism 320 is started to drive the moving bracket 322 to move forward inside the fixed frame body 311, and the inclination angles of the two connecting plates 323 are changed, so that the two groups of tire clamping parts 324 move in the opposite direction;

[0072] S3, after the tire clamping part 324 moves to the outer end of the movable slider 325, it starts to squeeze the movable slider 325 and moves toward the front end, thereby driving the fixed tooth plate 326 to move toward the front end;

[0073] S4, then, the moving fixed tooth plate 326 drives the docking gear 334 to rotate, which drives the rod end gear 333 to rotate, and then drives the screw rod 332 to rotate, so that the tire lifting frame 331 moves upward inside the outer cover 335;

[0074] S5, after the tire lifting frame 331 delivers the waste tire into the interior of the fixed frame 311, the telescopic rod of the control cylinder 321 begins to shrink, and the two sets of tire clamping parts 324 are driven to move toward each other through the mobile bracket 322 and the connecting plate 323;

[0075] S6. The two rubber pads 3242 at the front ends of the two wave plates 3241 clamp the tire. Then, the movable slider 325 drives the tire to move toward the roller crushing device 200 under the traction of the cylinder 321. At this time, the moving movable slider 325 restores the position of the tire lifting frame 331.

[0076] S7, repeatedly controlling the cylinder 321 to make it contract periodically, and the tire cutting saw 313 cuts the batch of waste tires into halves, and sends the cut tires to the top of the frame through slot 3110 at the rear side;

[0077] S8. Subsequently, the cut tire will fall into the inside of the roller crushing device 200, and the roller crushing device 200 will crush the tire into blocks, and then the crushed tire will be sent to the inside of the wire separator to decompose the tire blocks into rubber particles and separate the steel wires;

[0078] S9. Next, the rubber particles are sent to a fine crusher for further crushing, and then transported to the inside of a fiber separation device through a fan, and the fibers of the rubber particles are sorted out. Subsequently, the rubber particles free of impurities are sent to the inside of a grinding mill through a screw conveyor, and the rubber particles are processed into rubber powder through the grinding mill.

[0079] The foregoing description of specific exemplary embodiments of the present invention is for the purpose of illustration and demonstration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the present invention and various different selections and changes. The scope of the present invention is intended to be limited by the specification and its equivalents.

Claims

1. A multi-stage crushing device for processing waste tires into rubber powder, comprising a tire transport device (100), a roller crushing device (200) arranged at the rear side of the tire transport device (100), and a tire pre-processing device (300) arranged between the tire transport device (100) and the roller crushing device (200); characterized in that: The tire pre-processing device (300) comprises a fixing portion (310), a tire transport mechanism (320) arranged inside the fixing portion (310), and a lifting mechanism (330) arranged at the front end of the tire transport mechanism (320); The fixing part (310) comprises a fixing frame (311), a tire cutting saw (313) arranged at the center of the bottom surface of the fixing frame (311), four limiting protrusions (314) distributed in a matrix, and a plurality of pressure springs (315) arranged on the outer side walls of the limiting protrusions (314); The tire transport mechanism (320) comprises a cylinder (321), a movable bracket (322) that moves with the telescopic rod of the cylinder (321), two symmetrically arranged connecting plates (323) that change their own inclination angles as the position of the movable bracket (322) changes, tire clamping parts (324) respectively arranged at the front ends of the two connecting plates (323), a movable slider (325) arranged at the front ends of the tire clamping parts (324), and a fixed tooth plate (326) that moves as the movable slider (325) moves; The tire clamping part (324) comprises a clamping plate (3240), a wave plate (3241) arranged on the inner side of the clamping plate (3240), a rubber pad (3242) arranged on the inner side of the bending part of the wave plate (3241), an outward protruding bracket (3243) arranged on the outer side wall of the rear end of the clamping plate (3240), a placement rack (3244) arranged on the outer side wall of the front end of the clamping plate (3240), and a limiting slider (3245) arranged on the outer side wall of the placement rack (3244); The lifting mechanism (330) comprises a tire lifting frame (331), a screw rod (332) arranged on the outer sides of the left and right ends of the tire lifting frame (331), a rod end gear (333) sleeved on the outer side wall of the top end of the screw rod (332), a docking gear (334) that drives the rod end gear (333) to rotate by rotating itself, and an outer cover (335) sleeved on the outer side of the tire lifting frame (331); The movable slider (325) is slidably connected to the inner bottom surface of the fixed frame (311); a block slide groove (3250) for providing a moving range for the limiting slider (3245) and a limiting groove (3251) for providing a placement range for the limiting protrusion (314) are provided on the outer wall of the movable slider (325); the top surface protrusion of the fixed tooth plate (326) is fixedly connected to the bottom surface of the movable slider (325) by bolts; The longitudinal section of the tire lifting frame (331) is in a U shape. The bumps at the left and right ends of the tire lifting frame (331) are threadedly connected to the lead screw (332), and the top end of the lead screw (332) is rotatably connected to the bottom surface of the fixed frame body (311). The rod end gear (333) is fixedly connected to the outer side wall of the lead screw (332) through a pin. The docking gear (334) meshes with the rod end gear (333) and is rotatably connected to the bottom surface of the fixed frame body (311). The docking gear (334) meshes with the fixed toothed plate (326). The outer sleeve cover body (335) is fixedly connected to the bottom surface of the fixed frame body (311) through bolts. Through holes (3350) that penetrate both the inside and outside are provided on the outer side walls at the left and right ends of the outer sleeve cover body (335).

2. The multi-stage crushing device for processing waste tires into rubber powder according to claim 1 is characterized in that: Through holes (3110) that penetrate both the top and bottom are provided on the top surfaces at the front and rear ends of the fixed frame body (311). Limit sliding grooves (3111) that penetrate both the top and bottom are provided on both the left and right sides of the front frame through hole (3110) of the fixed frame body (311). A number of placement grooves (3112) for placing limit bumps (314) are provided on the inner side wall of the fixed frame body (311). Support frames (312) are fixedly connected to the corner positions of the bottom surface of the fixed frame body (311) through bolts.

3. The multi-stage crushing device for processing waste tires into rubber powder according to claim 2 is characterized in that: The tire cutting saw (313) is fixedly connected to the bottom surface of the fixed frame body (311) through bolts. The horizontal height of the top end of the cutting saw in the tire cutting saw (313) is the same as the horizontal height of the top frame opening of the fixed frame body (311). The limit bump (314) is slidably connected to the inside of the placement groove (3112). Both ends of the compression spring (315) are welded and fixed to the inner groove wall of the placement groove (3112) and the outer side wall of the limit bump (314).

4. The multi-stage crushing device for processing waste tires into rubber powder according to claim 3 is characterized in that: The air cylinder (321) is fixedly connected to the inner frame wall of the fixed frame body (311) through bolts. The moving bracket (322) is fixedly connected to the end of the telescopic rod of the air cylinder (321) through bolts. One end of the connecting plate (323) is rotatably connected to the outside of the moving bracket (322).

5. The multi-stage crushing device for processing waste tires into rubber powder according to claim 4 is characterized in that: The clamping plate body (3240) is slidably connected to the inner bottom surface of the fixed frame body (311). The corrugated plate body (3241) is welded and fixed to the clamping plate body (3240). The cross section of the rubber pad (3242) is arc-shaped and adhesively fixed to the inner side wall at the bent part of the corrugated plate body (3241).

6. The multi-stage crushing device for processing waste tires into rubber powder according to claim 5 is characterized in that: The outer convex bracket (3243) and the placement rack (3244) are both welded and fixed to the outer side wall of the clamping plate body (3240). The outer convex bracket (3243) is rotatably connected to the other end of the connecting plate (323). The limit slider (3245) is integrally formed with the placement rack (3244). A universal wheel (3246) is snap-connected to the outer side wall at the rear end of the clamping plate body (3240).

7. A multi-stage crushing method for processing waste tires into rubber powder, using the multi-stage crushing device for processing waste tires into rubber powder according to claim 6, characterized in that: Including the following steps: S1. First, an operator places the tires stacked in the workshop on the top surface of the tire transport device (100) in sequence, and moves the tires toward the lifting mechanism (330) in the tire pre-processing device (300) through the tire transport device (100); S2. After the waste tire is fed onto the top surface of the fixed frame (311), the cylinder (321) in the tire transport mechanism (320) is activated to drive the movable bracket (322) to move forward inside the fixed frame (311), thereby changing the inclination angle of the two connecting plates (323), thereby causing the two sets of tire clamping parts (324) to move in opposite directions; S3, after the tire clamping part (324) moves to the outer end of the movable slider (325), it starts to squeeze the movable slider (325) and moves toward the front end together, thereby driving the fixed tooth plate (326) to move toward the front end; S4, then, the moving fixed tooth plate (326) drives the docking gear (334) to rotate, which drives the rod end gear (333) to rotate, and then drives the screw rod (332) to rotate, so that the tire lifting frame (331) moves upward inside the outer cover (335); S5, after the tire lifting frame (331) delivers the waste tire into the interior of the fixed frame (311), the telescopic rod of the control cylinder (321) begins to contract, and the two sets of tire clamping parts (324) are driven to move toward each other through the movable bracket (322) and the connecting plate (323); S6. The two groups of rubber pads (3242) at the front ends of the two wave plates (3241) clamp the tire. Then, the movable slider (325) drives the tire to move toward the roller crushing device (200) under the traction force of the cylinder (321). At this time, the moving movable slider (325) restores the position of the tire lifting frame (331). S7, repeatedly controlling the air cylinder (321) to allow it to contract periodically, and using the tire cutting saw (313) to cut the batch of waste tires into halves, and then sending the cut tires to the top of the frame through slot (3110) located at the rear side; S8, subsequently, the cut tire falls into the inside of the roller crushing device (200), and the roller crushing device (200) crushes the tire into blocks, and then the crushed tire is sent to the inside of the wire separator, and the tire blocks are decomposed into rubber particles, and the steel wire is decomposed; S9. Next, the rubber particles are sent to a fine crusher for further crushing, and then transported to the inside of a fiber separation device through a fan, and the fibers of the rubber particles are sorted out. Subsequently, the rubber particles free of impurities are sent to the inside of a grinding mill through a screw conveyor, and the rubber particles are processed into rubber powder through the grinding mill.

Images