Waste rubber cutting and crushing device and method

Abstract

The invention relates to the technical field of waste rubber recovery, and provides a waste rubber cutting and crushing device and method.The waste rubber cutting and crushing device comprises a mounting base, a cutting and crushing machine, a bracket, a first filter box, a screen, a vibration motor, a second filter box, a mounting part, a guide plate and a magnetic separation screening plate; and a blanking hole communicated with a discharge hole of the double-shaft shearing type crushing barrel is formed in the mounting seat. By arranging the screen, large-size steel wires which are not cut off can be screened before magnetic separation, by arranging the two guide plates, rubber fragments can be collected at one position through the upper guide plate and then fall out from one position to the other side on the lower guide plate, and therefore the screening effect of the magnetic separation screening plate arranged on the lower guide plate is improved; therefore, the cutting and crushing device can conveniently clean metal substances contained in rubber fragments during the discharging period of cut and crushed rubber, and is convenient to use.

Description

Technical Field

[0001] This invention relates to the field of waste rubber recycling technology, and in particular to a waste rubber cutting and crushing device and method. Background Technology

[0002] Rubber is a widely used product in daily life, and the amount of waste tires and other rubber products generated globally each year is staggering, creating a huge "black pollution." Waste rubber is a thermosetting polymer material that is extremely difficult to degrade naturally. Long-term accumulation not only occupies land resources but also easily causes fires and breeds mosquitoes, posing a serious threat to the environment. Therefore, it is necessary to recycle waste rubber generated in daily life, and the recycling process involves cutting and crushing waste rubber.

[0003] In conventional waste rubber recycling processes, the processing of rubber containing metal components such as steel wires, such as waste tires, is often involved. Typically, a dual-shaft shear crusher is used to cut and crush waste tires. However, after crushing, the shredded rubber often contains a significant amount of metal fragments, and screening these fragments takes excessive time. Therefore, this solution proposes a waste rubber cutting and crushing device and method to address these issues. Summary of the Invention

[0004] In view of this, the present invention proposes a waste rubber cutting and crushing device and method to solve the technical problem that after conventional cutting and crushing of waste tires by a twin-shaft shear crusher, the crushed rubber contains a large number of metal fragments, and the fragments produced after screening and crushing require too much time.

[0005] The technical solution of this invention is implemented as follows: This invention provides a waste rubber cutting and crushing device, including a mounting base, a cutting and crushing machine, a bracket, a first filter box, a screen, a vibrating motor, a second filter box, mounting components, a guide plate, and a magnetic separation screen plate, wherein,

[0006] A cutting and crushing machine is mounted on the mounting base, including a dual-shaft shear crushing cylinder. The dual-shaft shear crushing cylinder is used to cut and crush rubber. The mounting base is provided with a discharge hole that communicates with the discharge port of the dual-shaft shear crushing cylinder.

[0007] A bracket is provided below the mounting base. The first filter box is movably connected to the bracket. The upper and lower ends of the first filter box are open, and the material discharge hole is located inside the first filter box in the height direction.

[0008] A sieve, located inside the bracket, is used to sieve large-volume materials within the rubber fragments;

[0009] A vibrating motor is arranged on the first filter box and used for vibrating the first filter box.

[0010] A second filter box is arranged below the first filter box, and the second filter box is open at the upper and lower ends and used for receiving the rubber pieces falling from the first filter box.

[0011] Two mounting members are arranged on the opposite two side walls of the inner cavity of the second filter box and staggered in the up-down direction.

[0012] Two guide plates are rotationally connected with the two mounting members respectively, and a mounting groove is arranged on the lower guide plate, and a magnetic separation screen plate is arranged in the mounting groove and used for magnetically attracting the metal objects on the lower guide plate.

[0013] On the basis of the above technical scheme, preferably, the bracket is formed with a bottom supporting plate, the first filter box is provided with a side edge, the bottom supporting plate is used for supporting the side edge, and a displacement gap is formed between the bracket and the first filter box.

[0014] On the basis of the above technical scheme, preferably, the bracket is formed with a bottom supporting plate, the first filter box is provided with a side edge, the bottom supporting plate is used for supporting the side edge, and a displacement gap is formed between the bracket and the first filter box.

[0015] One end of the bracket is formed with a box taking opening, and the end baffle is arranged at the box taking opening and used for shielding the side edge, and a box taking gap is formed between the end baffle and the top end of the bracket.

[0016] On the basis of the above technical scheme, preferably, the bracket is formed with a bottom supporting plate, the first filter box is provided with a side edge, the bottom supporting plate is used for supporting the side edge, and a displacement gap is formed between the bracket and the first filter box.

[0017] Three inner guide clamps are slidably arranged on the inner side of the bracket and slide towards or away from the first filter box, the three inner guide clamps are distributed in the circumferential direction, and the top wall of the inner guide clamp is an inclined wall.

[0018] A first spring is connected between the inner guide clamp and the bracket and used for resetting the sliding position of the inner guide clamp.

[0019] On the basis of the above technical scheme, preferably, the bracket is formed with a bottom supporting plate, the first filter box is provided with a side edge, the bottom supporting plate is used for supporting the side edge, and a displacement gap is formed between the bracket and the first filter box.

[0020] An end portion of the mounting member is provided with a connecting groove, the connecting groove is an arc-shaped groove, a connecting sleeve is rotationally connected to the inner side of the connecting groove and abuts against the inner side wall of the connecting groove, and the guide plate is connected with the connecting sleeve.

[0021] On the basis of the above technical scheme, preferably, the first filter box is plugged in the inner side of the second filter box, the upper mounting piece is arranged on the top of the inner cavity of the second filter box, and when the upper guide plate rotates upwards, the guide plate extrudes the first filter box upwards out of the second filter box.

[0022] On the basis of the above technical scheme, preferably, it further comprises a first transmission roller, a second transmission roller, a third transmission roller, a transmission gear and a transmission belt, wherein,

[0023] The first transmission roller and the second transmission roller are respectively arranged with two guide plates, and two third transmission rollers are rotatably arranged on one side of the second filter box;

[0024] Two transmission gears are arranged on the two third transmission rollers respectively, and the two transmission gears are meshed with each other;

[0025] Two transmission belts are in transmission connection with the third transmission rollers and in transmission connection with the first transmission roller or the second transmission roller.

[0026] On the basis of the above technical scheme, preferably, it further comprises a mounting side frame, a sliding block and a second spring, wherein,

[0027] The mounting side frame is arranged on one side of the second filter box corresponding to the second transmission roller, the second transmission roller penetrates through the mounting side frame, an annular sliding groove is formed in the mounting side frame, and a positioning tooth groove is formed in the inner side of the annular sliding groove, and the positioning tooth groove is an annular tooth groove;

[0028] The sliding block is in sliding connection with the annular sliding groove and is connected with the second transmission roller through the second spring, and the sliding block is selectively slid into the positioning tooth groove.

[0029] On the basis of the above technical scheme, preferably, it further comprises a pushing block, wherein,

[0030] The second transmission roller is provided with threads on the circumferential side, the pushing block is in threaded connection with the second transmission roller, the pushing block is a vertebral body-shaped block, and the side surface of the pushing block close to the sliding block is an inclined surface for extruding the sliding block.

[0031] The application further provides a waste rubber cutting and crushing method, which is completed by the waste rubber cutting and crushing device, and comprises the following steps:

[0032] S1, the waste rubber body is supplied into the inside of the cutting and crushing machine and is cut and crushed;

[0033] S2, when the rubber fragments after cutting and crushing fall into the inside of the first filter box, the vibration motor is started, and the screen screen separates the steel wires or other large-volume materials in the rubber fragments which are not cut off.

[0034] S3, the metal particle impurities in the rubber pieces passing through the lower guide plate are magnetically attracted and screened by the magnetic screening plate, so that the metal particles in the cut and broken rubber pieces are magnetically attracted and screened;

[0035] S4, the vertical position of the lower guide plate is adjusted when the lower guide plate rotates out of the second filter box, and the metal particle impurities magnetically attracted on the magnetic screening plate are recovered and cleaned.

[0036] The waste rubber cutting and crushing device and method of the application has the following beneficial effects compared with the prior art:

[0037] (1) The waste rubber cutting and crushing device of the application can screen the large volume steel wires that have not been cut before magnetic separation by setting a screen, and the screening efficiency of the uncut steel wires is accelerated by setting a vibration motor to vibrate the first filter box. The rubber pieces containing metal particles fall into the inside of the second filter box, and the rubber pieces are collected at one place by the upper guide plate, and then fall out from one place to the other side on the lower guide plate, thereby increasing the screening effect of the magnetic screening plate arranged on the lower guide plate, and facilitating use. The guide plate is rotatably arranged, so that the lower guide plate can be rotated downward to move out of the second filter box, facilitating cleaning and recycling of the metal particles adsorbed on the magnetic screening plate.

[0038] (2) The first filter box can be detached from the bracket by opening a box taking opening at one end of the bracket, facilitating collection and treatment of the uncut steel wires screened by the screen. In specific implementation, the first filter box is lifted to make the side edge protrude upward to block the end plate, and then the first filter box is taken out from the front side, so that the first filter box can be quickly disassembled and treated. The first filter box is inserted into the inside of the second filter box, and the upper guide plate is arranged on the top of the inner cavity of the second filter box, so that the upper guide plate can push the second filter box upward when the upper guide plate rotates upward. Since the second filter box containing screened objects is heavy, the second filter box can be conveniently taken out by setting a crank, facilitating use.

[0039] (3) The guide plate is rotatably connected with the mounting piece through the adapter cylinder and the connecting groove, so that the guide plate can be kept in sealed connection with the mounting piece no matter how it rotates, preventing the rubber pieces from accidentally falling out from the connection between the guide plate and the mounting piece, facilitating use. BRIEF DESCRIPTION OF DRAWINGS

[0040] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only show some embodiments of the present application, and for those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0041] Figure 1 It is a perspective view of the waste rubber cutting and crushing device of the present application.

[0042] Figure 2 It is a left view of the waste rubber cutting and crushing device of the present application.

[0043] Figure 3 It is a perspective view of the waste rubber cutting and crushing device of the present application. Figure 2 It is a sectional view of the structure at A-A.

[0044] Figure 4 It is a perspective view of the waste rubber cutting and crushing device of the present application. Figure 3 It is an enlarged schematic view at B.

[0045] Figure 5 It is a perspective view of the waste rubber cutting and crushing device of the present application. Figure 3 It is an enlarged schematic view at C.

[0046] Figure 6 It is a schematic view of the connecting mode of the bracket and the first filter box of the waste rubber cutting and crushing device of the present application.

[0047] Figure 7 It is a perspective view of the bracket of the waste rubber cutting and crushing device of the present application.

[0048] Figure 8 It is a perspective view of the second filter box of the waste rubber cutting and crushing device of the present application.

[0049] Figure 9 It is a perspective view of the waste rubber cutting and crushing device of the present application. Figure 8 It is an enlarged schematic view at D.

[0050] In the figure: 1, mounting seat; 11, blanking hole; 2, cutting crusher; 21, double-shaft shearing type crushing cylinder; 31, bracket; 311, bottom support plate; 312, box taking opening; 32, first filter box; 321, side edge; 322, displacement gap; 33, screen; 34, vibration motor; 35, end baffle; 351, box taking gap; 41, second filter box; 42, connecting bracket; 51, mounting piece; 511, connecting groove; 52, guide plate; 521, mounting groove; 53, magnetic separation screening plate; 54, adapter cylinder; 61, inner guide clamping plate; 62, first spring; 71, first transmission roller; 72, second transmission roller; 73, third transmission roller; 74, transmission gear; 75, transmission belt; 81, mounting side frame; 811, annular sliding chute; 812, positioning tooth groove; 82, sliding block; 83, second spring; 84, pushing block; 85, crank handle. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0052] As Figures 1-9 , the waste rubber cutting and crushing device of the present application comprises a mounting seat 1, a cutting crusher 2, a bracket 31, a first filter box 32, a screen 33, a vibration motor 34, a second filter box 41, a mounting piece 51, a guide plate 52, and a magnetic separation screening plate 53. The cutting crusher 2 is arranged on the mounting seat 1 and comprises a double-shaft shearing type crushing cylinder 21 for cutting and crushing rubber. The mounting seat 1 is provided with a blanking hole 11 in communication with the discharge port of the double-shaft shearing type crushing cylinder 21. The bracket 31 is arranged below the mounting seat 1, and the first filter box 32 is movably connected to the bracket 31. The first filter box 32 is open at the upper and lower ends, and the blanking hole 11 is located on the inner side of the first filter box 32 in the height direction. The screen 33 is arranged inside the bracket 31 and is used for screening large-volume substances in the rubber fragments. The vibration motor 34 is arranged on the first filter box 32 and is used for vibrating the first filter box 32. The second filter box 41 is arranged below the first filter box 32 and is open at the upper and lower ends to receive the rubber fragments falling from the first filter box 32. Two mounting pieces 51 are arranged on the opposite side walls of the inner cavity of the second filter box 41 and are distributed staggeredly in the up-down direction. Two guide plates 52 are rotatably connected to the two mounting pieces 51, and the lower guide plate 52 is provided with a mounting groove 521 in which the magnetic separation screening plate 53 is arranged to magnetically attract metal objects on the lower guide plate 52.

[0053] In specific implementation, the second filtering box 41 is connected with the mounting base 1 through the connecting frame 42.

[0054] In specific implementation, the waste rubber is supplied into the inside of the cutting crusher 2 and is cut and crushed, the rubber pieces after cutting and crushing fall into the inside of the first filtering box 32 through the falling hole 11, at this time, the vibration motor 34 is always in the starting state, the vibration motor 34 vibrates the first filtering box 32, the first filtering box 32 vibrates along the bracket 31, and the steel wires or other large-volume materials not cut in the rubber pieces are screened through the vibrating screen 33; after screening through the vibrating screen 33, the materials fall into the inside of the second filtering box 41, are guided through the upper guide plate 52 first, are collected on the right side of the second filtering box 41, fall out from the right side to the left side of the second filtering box 41 collectively on the lower guide plate 52, and the metal particle impurities in the rubber pieces passing through the lower guide plate 52 are magnetically attracted through the magnetic separation screening plate 53, so that the magnetic separation and screening of the metal particles in the rubber pieces after cutting and crushing are completed; when it is necessary to clean the metal particle impurities adsorbed on the magnetic separation screening plate 53, the vertical position of the lower guide plate 52 when rotating is adjusted, at this time, the lower guide plate 52 rotates out of the second filtering box 41, and the metal particle impurities magnetically adsorbed on the magnetic separation screening plate 53 are recycled and cleaned.

[0055] It should be noted that since the steel wires contained in the waste rubber such as tires are small in diameter when being cut and crushed, the steel wires may be cut and crushed or may not be cut and crushed when passing through the double-shaft shearing type crushing cylinder 21, and the whole falls down.

[0056] The waste rubber cutting and crushing device provided in the application can screen the large-volume steel wires not cut before magnetic separation through the vibrating screen 33, and the vibration motor 34 is arranged to vibrate the first filtering box 32, so as to accelerate the screening efficiency of the steel wires not cut, the rubber pieces containing metal particles fall into the inside of the second filtering box 41, the two guide plates 52 are arranged, the rubber pieces can be collected at one place through the upper guide plate 52, and then fall out from one place to another side collectively on the lower guide plate 52, so as to increase the screening effect of the magnetic separation screening plate 53 arranged on the lower guide plate 52, and facilitate use. The guide plate 52 is arranged to rotate, so that the lower guide plate 52 can rotate downward to move out of the second filtering box 41, and the metal particles adsorbed on the magnetic separation screening plate 53 can be conveniently cleaned and recycled.

[0057] As a preferred embodiment, the bracket 31 is formed with a bottom supporting plate 311, the first filtering box 32 is provided with a side edge 321, the bottom supporting plate 311 is used for supporting the side edge 321, and a displacement gap 322 is formed between the bracket 31 and the first filtering box 32.

[0058] By setting the displacement gap 322, the vibration motor 34 is started, the first filter box 32 moves back and forth in the displacement gap 322 through the side 321, thereby completing the vibration driving process of the first filter box 32.

[0059] Also includes an end baffle 35, wherein one end of the bracket 31 is formed with a box opening 312, and the end baffle 35 is arranged at the box opening 312, used to shield the side 321, and the end baffle 35 is formed between the top end of the bracket 31 and the box gap 351.

[0060] By opening the box opening 312 at one end of the bracket 31, so that the first filter box 32 can be detached from the bracket 31, and the uncut steel wire screened by the screen 33 is collected and processed, in the specific implementation, the first filter box 32 is lifted up, the side 321 protrudes upwardly to the end baffle 35, and the first filter box 32 is taken out from the front side, thereby completing the quick disassembly of the first filter box 32.

[0061] As a preferred embodiment, it further includes an inner guide clamp plate 61 and a first spring 62, wherein the three inner guide clamp plates 61 are slidably arranged on the inner side of the bracket 31, and slide towards or away from the first filter box 32, the three inner guide clamp plates 61 are distributed in a circumferential direction, and the top wall of the inner guide clamp plate 61 is an inclined wall; the first spring 62 is connected between the inner guide clamp plate 61 and the bracket 31, used to reset the sliding position of the inner guide clamp plate 61.

[0062] Specifically, when the first filter box 32 is placed inside the bracket 31, the side 321 extrudes the inner guide clamp plate 61, so that the inner guide clamp plate 61 slides outwardly and extrudes the first spring 62, and under the elastic force of the first spring 62, the first filter box 32 is positioned at the center position through the plurality of inner guide clamp plates 61.

[0063] By setting the top wall of the inner guide clamp plate 61 as an inclined wall, it is convenient to place the first filter box 32 inside the bracket 31, and under the elastic force of the first spring 62, the first filter box 32 is positioned at the center position, which is convenient to expand the vibration effect of the vibration motor 34 on the first filter box 32, and is convenient to use.

[0064] As a preferred embodiment, it further includes an adapter cylinder 54, wherein the end of the mounting member 51 is provided with a connecting groove 511, the connecting groove 511 is an arc-shaped groove, the adapter cylinder 54 is rotatably connected to the inner side of the connecting groove 511 and abuts with the inner side wall of the connecting groove 511, and the guide plate 52 is connected with the adapter cylinder 54.

[0065] The guide plate 52 is rotatably connected to the mounting piece 51 through the adapter sleeve 54, and the adapter sleeve 54 is attached to the connecting groove 511, so that the guide plate 52 can be kept in sealed connection with the mounting piece 51 regardless of the rotation, preventing the rubber fragments from falling out of the connection between the guide plate 52 and the mounting piece 51, and facilitating use.

[0066] As a preferred embodiment, the first filter box 32 is inserted into the inside of the second filter box 41, and the upper mounting piece 51 is arranged at the top of the inner cavity of the second filter box 41, so that when the upper guide plate 52 is rotated upward, the guide plate 52 pushes the first filter box 32 out of the second filter box 41 upward.

[0067] By inserting the first filter box 32 into the inside of the second filter box 41 and arranging the upper mounting piece 51 at the top of the inner cavity of the second filter box 41, the upper guide plate 52 can push the second filter box 41 upward when it is rotated upward. Since the second filter box 41 containing the screened material is relatively heavy, the crank 85 can be used to conveniently take out the second filter box 41, facilitating use.

[0068] As a preferred embodiment, the first transmission roller 71, the second transmission roller 72, the third transmission roller 73, the transmission gear 74, and the transmission belt 75 are further included, wherein the first transmission roller 71 and the second transmission roller 72 are respectively connected to the two guide plates 52, and the two third transmission rollers 73 are rotatably arranged on one side of the second filter box 41; the two transmission gears 74 are arranged on the two third transmission rollers 73, and the two transmission gears 74 are meshed with each other; and the two transmission belts 75 are in transmission connection with the third transmission rollers 73 and the first transmission roller 71 or the second transmission roller 72.

[0069] In this way, when it is necessary to control the two guide plates 52 to rotate downward at the same time, the first transmission roller 71 or the second transmission roller 72 is driven to rotate, the transmission roller drives the third transmission roller 73 on the same side to rotate, the third transmission roller 73 on the same side drives the other third transmission roller 73 to rotate in the opposite direction through the transmission gear 74, and the other third transmission roller 73 drives the first transmission roller 71 or the second transmission roller 72 on the other side to rotate through the transmission belt 75, thereby completing the synchronous reverse driving process of the first transmission roller 71 and the second transmission roller 72, and only the first transmission roller 71 or the second transmission roller 72 needs to be rotated during the process, facilitating use.

[0070] Further comprising a mounting side frame 81, a sliding block 82 and a second spring 83, wherein the mounting side frame 81 is arranged at one side of the corresponding second transmission roller 72 of the second filter box 41, the second transmission roller 72 penetrates through the mounting side frame 81, the mounting side frame 81 is provided with an annular sliding groove 811, and the inner side of the annular sliding groove 811 is provided with a positioning tooth groove 812 which is an annular tooth groove; the sliding block 82 is in sliding connection with the annular sliding groove 811 and is connected with the second transmission roller 72 through the second spring 83, and the sliding block 82 is selectively slid into the positioning tooth groove 812.

[0071] Preferably, a telescopic rod is connected between the sliding block 82 and the second transmission roller 72, and the second spring 83 is sleeved on the outer side of the telescopic rod.

[0072] Further comprising a pushing block 84, wherein the second transmission roller 72 is provided with a thread on the circumferential side, and the pushing block 84 is in threaded connection with the second transmission roller 72, the pushing block 84 is a conical block, and the side surface of the pushing block 84 close to the sliding block 82 is an inclined surface for extruding the sliding block 82.

[0073] In specific implementation, the two guide plates 52 are driven to rotate through the second transmission roller 72, and in this process, the sliding block 82 rotates with the second transmission roller 72. After the rotation angle adjustment of the guide plates 52 is completed, the pushing block 84 is rotated, the pushing block 84 moves along the second transmission roller 72 under the action of threaded connection, and extrudes the sliding block 82 through the inclined side wall thereof, the sliding block 82 slides outward and is connected with the positioning tooth groove 812, and under the traction of the second spring 83, the rotation angle of the second transmission roller 72 is fixed, the positioning treatment of the two guide plates 52 is completed, and the use is facilitated.

[0074] The application further provides a waste rubber cutting and crushing method which is completed through the waste rubber cutting and crushing device and comprises the following steps.

[0075] Step one: the waste rubber body is supplied into the inside of the cutting and crushing machine 2 and is cut and crushed;

[0076] Step two: when the rubber fragments after cutting and crushing fall into the inside of the first filter box 32, the vibration motor 34 is started, and the screen 33 screens the steel wires or other bulky substances which are not cut in the rubber fragments;

[0077] Step three: the metal particle impurities in the rubber fragments passing through the lower guide plate 52 are magnetically attracted through the magnetic separation screening plate 53, and the magnetic attraction screening of the metal particle impurities in the rubber fragments after cutting and crushing is completed;

[0078] Step four: the vertical position of the lower guide plate 52 when rotating is adjusted, and the lower guide plate 52 is turned out of the second filter box 41 to recycle and clean the metal particle impurities magnetically attracted on the magnetic separation screening plate 53.

[0079] The above merely provides the preferred embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A waste rubber cutting and crushing device, characterized in that: It includes a mounting base, a cutting and crushing machine, a bracket, a first filter box, a screen, a vibrating motor, a second filter box, mounting components, a guide plate, and a magnetic separation screening plate, among which... A cutting and crushing machine is mounted on the mounting base and includes a dual-shaft shear crushing cylinder. The dual-shaft shear crushing cylinder is used to cut and crush rubber. The mounting base is provided with a discharge hole that communicates with the discharge port of the dual-shaft shear crushing cylinder. A bracket is provided below the mounting base. The first filter box is movably connected to the bracket. The upper and lower ends of the first filter box are open, and the material discharge hole is located inside the first filter box in the height direction. A sieve, located inside the bracket, is used to sieve large-volume materials within the rubber fragments; A vibration motor is installed on the first filter box and is used to vibrate the first filter box; The second filter box is located below the first filter box. The upper and lower ends of the second filter box are open to receive rubber fragments falling from the first filter box. Two mounting components are respectively installed on opposite side walls of the inner cavity of the second filter box, and are staggered vertically. Two guide plates are rotatably connected to the two mounting components, and the lower guide plate is provided with a mounting groove. The magnetic separation screening plate is disposed inside the mounting groove and is used to magnetically attract metal objects on the lower guide plate.

2. The waste rubber cutting and crushing device as described in claim 1, characterized in that: The bracket has a bottom support plate, the first filter box has a side edge around its periphery, the bottom support plate is used to support the side edge, and a displacement gap is formed between the bracket and the first filter box.

3. The waste rubber cutting and crushing device as described in claim 2, characterized in that: It also includes end baffles, among which, One end of the bracket has a box retrieval opening, and the end baffle is disposed at the box retrieval opening to cover the side. A box retrieval gap is formed between the end baffle and the top of the bracket.

4. The waste rubber cutting and crushing device as described in claim 3, characterized in that: It also includes an inner guide plate and a first spring, wherein, Three inner guide plates are slidably disposed on the inner side of the bracket, sliding towards or away from the first filter box. The three inner guide plates are circumferentially distributed, and the top wall of the inner guide plates is an inclined wall. A first spring, connected between the inner guide plate and the bracket, is used to reset the sliding position of the inner guide plate.

5. The waste rubber cutting and crushing device as described in claim 1, characterized in that: It also includes an adapter tube, among which, The mounting component has a connecting groove at its end. The connecting groove is an arc-shaped groove. The adapter cylinder is rotatably connected to the inner side of the connecting groove and fits against the inner wall of the connecting groove. The guide plate is connected to the adapter cylinder.

6. The waste rubber cutting and crushing device as described in claim 5, characterized in that: The first filter box is inserted into the inner side of the second filter box, and the mounting component above is located at the top of the inner cavity of the second filter box. When the guide plate above rotates upward, the guide plate pushes the first filter box upward out of the second filter box.

7. The waste rubber cutting and crushing device as described in claim 6, characterized in that: It also includes a first drive roller, a second drive roller, a third drive roller, a drive gear, and a drive belt, wherein, The first drive roller and the second drive roller are respectively connected to the two guide plates, and the two third drive rollers are rotatably disposed on one side of the second filter box; Two transmission gears are respectively mounted on the two third transmission rollers, and the two transmission gears mesh with each other; Two drive belts are connected to the third drive roller and to either the first drive roller or the second drive roller.

8. The waste rubber cutting and crushing device as described in claim 7, characterized in that: It also includes mounting side brackets, sliding blocks, and a second spring, among which, The mounting side frame is set on one side of the second filter box corresponding to the second drive roller. The second drive roller passes through the mounting side frame. The mounting side frame has an annular groove, and the inner side of the annular groove has a positioning tooth groove. The positioning tooth groove is an annular tooth groove. A sliding block is slidably connected to the annular groove and connected to the second transmission roller via the second spring. The sliding block selectively slides into the positioning tooth groove.

9. The waste rubber cutting and crushing device as described in claim 8, characterized in that: It also includes push blocks, among which, The second drive roller has threads on its circumference, and the pushing block is threadedly connected to the second drive roller. The pushing block is a cone-shaped block, and the side of the pushing block near the sliding block is inclined to squeeze the sliding block.

10. A method for cutting and crushing waste rubber, characterized in that: The waste rubber cutting and crushing device according to any one of claims 1 to 9 is used to complete the following steps: S1. The waste rubber body is fed into the cutting and crushing machine and cut and crushed. S2. When the cut and broken rubber fragments fall into the first filter box, start the vibration motor. At this time, the screen will separate the uncut steel wires or other large-volume materials in the rubber fragments. S3. The metal particles and impurities in the rubber fragments that have passed through the guide plate below are magnetically attracted by the magnetic separation screening plate, thus completing the magnetic screening of the metal particles in the cut and crushed rubber fragments. S4. Adjust the vertical position of the lower guide plate when it rotates. At this time, the lower guide plate rotates out of the second filter box to recover and clean the metal particle impurities that are magnetically attracted to the magnetic separation screen plate.

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