Pulverizer for PVC (polyvinyl chloride) recovery

Abstract

The invention relates to the field of PVC (polyvinyl chloride) plastic recovery, in particular to a crusher for PVC recovery, which comprises a case, and a crushing box is connected above the case in a penetrating manner. Through reciprocating opposite movement of the two sets of crushing shafts in the rotating process, recycled materials made of PVC materials are extruded, so that the problem that the recycled materials in special shapes cannot be discharged, and consequently the situation that manual auxiliary discharging is needed is avoided, through transmission of a belt, an oval disc pushes a push rod to move, and the discharging efficiency is improved. By means of the structure, the crushing shaft can extrude recycled materials in the rotating process, the safety risk of operators is reduced, the crushing quality is improved, and the crushing efficiency is improved. And through swinging of the sieve tray, fragments which are not crushed thoroughly can be effectively screened, and the sieve tray can be replaced with different specifications according to a recycling and processing technology, so that the crushing quality is improved.

Description

Technical Field

[0001] The present invention relates to the field of PVC plastic recycling, and particularly to a crusher for PVC recycling. Background Art

[0002] PVC plastic, that is, polyvinyl chloride plastic, is a polymer formed by vinyl chloride monomers under the action of initiators such as peroxides and azo compounds, or by free radical polymerization reaction mechanism under the conditions of light and heat. PVC plastic recycling is an important environmental protection action, which can not only save resources but also reduce environmental pollution.

[0003] For the Chinese invention patent application with the publication number of CN109397579B, a crusher for PVC pipe recycling with a drying function, double-stage crushing is adopted. In the first-stage crushing, the spiral auger is driven by a rotating shaft to work, carrying and crushing the PVC pipe at the same time. Then, secondary crushing is carried out by the crushing roller in the second-stage crushing cylinder to ensure the crushing efficiency. A storage pipe is connected to the discharge end of the first-stage crushing cylinder, and a drying component is arranged on one side of the storage pipe. The preliminarily crushed PVC pipe falls into the storage pipe, and the air is heated by the heating cavity by the fan and introduced into the storage pipe to dehumidify and dry the PVC pipe. While the driving motor drives the driving shaft to rotate, the driving bevel gear acts on the driven bevel gear to drive the driven shaft to rotate, and the push-pull rod reciprocates through the connecting rod. The push-pull rod periodically impacts the second-stage crushing cylinder to shake off the PVC particles adhered to the cylinder wall and reduce the residue.

[0004] In the process of crushing of the existing PVC crushers, the PVC material is crushed by the meshing rotation of two groups of crushing shafts. However, the shapes of the objects processed by the existing PVC materials are various. When encountering a large barrel-shaped object, there is a high probability that the cylindrical object will roll between the two groups of crushing shafts, so external force needs to be applied to press it in order to crush the cylindrical object, which affects the normal use of the crusher. And because the operator needs to stay away during crushing, this method that requires close-range assistance increases the safety risk of the operator. Moreover, in the process of crushing of the existing crushers, the situation of incomplete crushing will occur, and such fragments will affect the subsequent processing, thus reducing the crushing quality.

[0005] Therefore, it is very necessary to invent a crusher for PVC recycling to solve the above problems. Summary of the Invention

[0006] The object of the present invention is to provide a crusher for PVC recycling. When two sets of crushing shafts rotate relative to each other, they can reciprocate, thereby extruding the PVC recycling materials to avoid the situation of material jamming. Moreover, the swinging of the sieve plate can effectively screen out the incompletely crushed fragments, so as to solve the problems in the prior art that special-shaped recyclables cannot be fed during crushing and the incompletely crushed fragments are mixed with the remaining fragments, affecting subsequent processing.

[0007] To achieve the above object, the present invention provides the following technical solution: A crusher for PVC recycling, including a machine case, a crushing box is connected through the upper part of the machine case in a penetrating manner, two sets of crushing shafts are symmetrically arranged in the crushing box, and the crushing tooth discs between the two sets of crushing shafts are meshed with each other, and a discharge hopper is connected through the lower part of the machine case.

[0008] The sliding components arranged on both sides of the crushing box include through grooves, the through grooves are symmetrically opened on the inner wall of the crushing box, and two through grooves form a group, and two groups are symmetrically opened on the inner wall of the crushing box. Guide rails are symmetrically installed at the upper and lower edges of each group of through grooves on the outer side of the crushing box. Slide frames are symmetrically arranged on both sides of the crushing box, and two slide frames form a group, and two groups are arranged on both sides of the crushing box. Guide blocks are symmetrically installed on the inner walls of each group of slide frames, and the guide blocks are slidably connected with the corresponding guide rails.

[0009] The adjusting component arranged on one side of the crushing box includes a rotating rod, the rotating rod is installed on one side of the crushing box, a reciprocating screw rod is rotatably connected below the rotating rod, a connecting frame is sleeved on the rotating rod, and a reciprocating internal threaded cylinder is installed below the inner wall of the connecting frame, and the reciprocating internal threaded cylinder is screwed with the reciprocating screw rod.

[0010] The screening component arranged in the crushing box includes a rotating shaft, the rotating shaft is rotatably connected above the machine case, an elliptical disc is sleeved and fixed on the rotating shaft, sliding grooves are symmetrically opened on the inner wall of the crushing box, a sieve plate is arranged in the crushing box, and sliding blocks are symmetrically installed on the sieve plate, and the sliding blocks are slidably connected with the corresponding sliding grooves.

[0011] As a preferred solution of the present invention, the sliding component further includes two sets of small pulleys I, the two sets of small pulleys I are respectively installed on one side of the two sets of slide frames, a motor is installed on one side of a set of slide frames away from the small pulley I, and the output end of the motor is axially connected to the other side of the crushing shaft.

[0012] As a preferred solution of the present invention, a crushing shaft is rotatably connected between a set of slide frames close to the motor, and the crushing shaft is axially connected to the small pulley I. A gear is axially connected to the small pulley I on one side of the other set of slide frames, and the gear is located on the inner wall of the slide frame. Another crushing shaft is rotatably connected between the other set of slide frames, and a gear is sleeved and fixed at the connection of this crushing shaft, and the two gears are meshed with each other.

[0013] As a preferred embodiment of the present invention, the adjusting assembly further includes a limiting groove symmetrically formed on the surface of the rotating rod. A large bevel gear is sleeved on the rotating rod, and limiting blocks are symmetrically installed on the inner wall of the large bevel gear, and the limiting blocks are slidably connected to the corresponding limiting grooves.

[0014] As a preferred embodiment of the present invention, a first spring is sleeved on the rotating rod, and a pushing ring is sleeved on the rotating rod. The two sides of the first spring are respectively in contact with the pushing ring and the connection between the rotating rod and the crushing box. Above the connecting frame, connecting arms are symmetrically rotatably connected, and the upper parts of the two groups of connecting arms are respectively rotatably connected to the lower parts of the corresponding sliding frames.

[0015] As a preferred embodiment of the present invention, the screening assembly further includes a fixed baffle. A connecting rod penetrates through the fixed baffle, and the fixed baffle is fixedly connected to one side of the crushing box by bolts.

[0016] As a preferred embodiment of the present invention, a push rod is installed on one side of the sieve plate. The push rod penetrates through the inner wall of the crushing box, and the push rod and the corresponding elliptical disc are at the same horizontal position. One side of the connecting rod is fixedly connected to the side of the sieve plate away from the push rod. A second spring is sleeved on the connecting rod, and the two sides of the second spring are respectively in contact with the sieve plate and the fixed baffle.

[0017] As a preferred embodiment of the present invention, the transmission assembly includes a large belt pulley rotatably connected to one side of the connecting frame. A small bevel gear is rotatably connected to the inner wall of the connecting frame. The small bevel gear is axially connected to the large belt pulley, and the small bevel gear meshes with the large bevel gear. A limiting rod is installed on one side of the crushing box. A sliding seat is slidably connected to the limiting rod. A second small belt pulley is rotatably connected to one side of the sliding seat. A third spring is sleeved on the limiting rod, and the two sides of the third spring are respectively in contact with the second small belt pulley and the connection between the limiting rod and the crushing box. A third small belt pulley is installed on one side of the rotating shaft. A belt is attached between the large belt pulley, the two first small belt pulleys, the second small belt pulley and the third small belt pulley.

[0018] In the above technical solution, compared with the prior art, the technical effects and advantages provided by the present invention are as follows:

[0019] Through the reciprocating opposite movement of two groups of crushing shafts during rotation, extrusion of PVC material recyclables is achieved, thus avoiding the problem that special-shaped recyclables cannot be discharged, which would otherwise result in the need for manual auxiliary discharging. Moreover, through the transmission of the belt, the elliptical disk pushes the push rod to move, enabling the sieve disk to screen the fragments, preventing incompletely crushed fragments from mixing with the rest and affecting the crushing quality. With this structure, the crushing shafts can extrude the recyclables during rotation, reducing the safety risk for operators. Additionally, the swinging of the sieve disk can effectively screen incompletely crushed fragments, and the sieve disk can be replaced with different specifications according to the recycling process, thereby improving the crushing quality. Description of the Drawings

[0020] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0021] Figure 1 Overall structural schematic diagram of the present invention;

[0022] Figure 2 Layout structural schematic diagram of the crushing shafts of the present invention;

[0023] Figure 3 Schematic diagram of the sieve disk disassembly structure of the present invention;

[0024] Figure 4 Connection structural schematic diagram of the crushing box and the sieve disk of the present invention;

[0025] Figure 5 Connection structural schematic diagram of the crushing shaft and the sliding frame of the present invention;

[0026] Figure 6 Connection structural schematic diagram of the sliding frame and the connecting arm of the present invention;

[0027] Figure 7 Belt layout structural schematic diagram of the present invention;

[0028] Figure 8 Connection frame planing structure schematic diagram of the present invention;

[0029] Figure 9 Transmission cooperation structural schematic diagram of the crushing shaft and the first small pulley of the present invention.

[0030] Explanation of the reference numerals in the drawings:

[0031] 001, Chassis; 101, Crushing box; 102, Crushing shaft; 103, Discharge hopper; 002, Sliding assembly; 201, Through slot; 202, Guide rail; 203, Sliding frame; 204, Guide block; 205, Small pulley 1; 206, Motor; 003, Adjusting assembly; 301, Rotating rod; 302, Reciprocating screw; 303, Connecting frame; 304, Limiting slot; 305, Large bevel gear; 306, Limiting block; 307, Spring 1; 308, Pushing ring; 309, Reciprocating internal thread cylinder; 310, Connecting arm; 004, Screening assembly; 401, Rotating shaft; 402, Elliptical disk; 403, Screening disk; 404, Slide block; 405, Slide groove; 406, Fixed baffle; 407, Connecting rod; 408, Spring 2; 409, Push rod; 005, Transmission assembly; 501, Large pulley; 502, Small bevel gear; 503, Limiting rod; 504, Sliding seat; 505, Small pulley 2; 506, Small pulley 3; 507, Belt; 508, Spring 3. Detailed implementation mode

[0032] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further introduced in detail below with reference to the accompanying drawings.

[0033] The present invention provides a Figures 1-9 shown PVC recycling crusher, including a chassis 001, a crushing box 101 is connected through the upper part of the chassis 001, two groups of crushing shafts 102 are symmetrically arranged in the crushing box 101, and the crushing sprockets between the two groups of crushing shafts 102 are meshed with each other. A discharge hopper 103 is connected through the lower part of the chassis 001;

[0034] Through the mutual rotation of the crushing shafts 102, the objects made of PVC materials are crushed, and the crushed blocks are collected through the discharge hopper 103 and discharged from the chassis 001.

[0035] The sliding assembly 002 arranged on both sides of the crushing box 101 includes through slots 201. The through slots 201 are symmetrically arranged on the inner wall of the crushing box 101, and two through slots 201 are in a group. Two groups of through slots 201 are symmetrically arranged on the inner wall of the crushing box 101. Guide rails 202 are symmetrically installed at the upper and lower edges of each group of through slots 201 on the outer side of the crushing box 101. Sliding frames 203 are symmetrically arranged on both sides of the crushing box 101, and two sliding frames 203 are in a group. Two groups of sliding frames 203 are arranged on both sides of the crushing box 101. Guide blocks 204 are symmetrically installed on the inner walls of each group of sliding frames 203, and the guide blocks 204 are slidably connected with the corresponding guide rails 202;

[0036] Through the cooperation of the guide blocks 204 and the guide rails 202, the sliding frame 203 can slide on one side of the through slot 201, so as to realize the mutual approach or separation of the two groups of crushing shafts 102, so as to crush the cylindrical PVC material recyclables.

[0037] The adjusting component 003 arranged on one side of the crushing box 101 includes a rotating rod 301. The rotating rod 301 is installed on one side of the crushing box 101. A reciprocating screw rod 302 is rotatably connected below the rotating rod 301. A connecting frame 303 is sleeved on the rotating rod 301. A reciprocating internal thread cylinder 309 is installed below the inner wall of the connecting frame 303, and the reciprocating internal thread cylinder 309 is screwed with the reciprocating screw rod 302;

[0038] The rotating rod 301 can drive the reciprocating screw rod 302 to rotate, so that the reciprocating internal thread cylinder 309 drives the connecting frame 303 to move up and down.

[0039] The screening component 004 arranged in the crushing box 101 includes a rotating shaft 401. The rotating shaft 401 is rotatably connected above the chassis 001. An elliptical disk 402 is sleeved and fixed on the rotating shaft 401. Sliding grooves 405 are symmetrically formed on the inner wall of the crushing box 101. A screening disk 403 is arranged in the crushing box 101. Sliders 404 are symmetrically installed on the screening disk 403, and the sliders 404 are slidably connected with the corresponding sliding grooves 405;

[0040] The rotation of the rotating shaft 401 can drive the elliptical disk 402 to rotate, and with the cooperation of the sliders 404 and the sliding grooves 405, the screening disk 403 can run more smoothly.

[0041] Furthermore, in the above structure, the sliding component 002 further includes two sets of small pulleys one 205. The two sets of small pulleys one 205 are respectively installed on one side of the two sliding frames 203. A motor 206 is installed on one side of one sliding frame 203 away from the small pulley one 205, and the output end of the motor 206 is axially connected to the other side of the crushing shaft 102.

[0042] The motor 206 drives the crushing shaft 102 to rotate, so that the crushing shaft 102 drives the small pulley one 205 on one side to rotate, and the power is transmitted through the belt 507.

[0043] Furthermore, in the above structure, a crushing shaft 102 is rotatably connected between a set of sliding frames 203 close to the motor 206, and the crushing shaft 102 is axially connected to the small pulley one 205. A gear is axially connected to the small pulley one 205 on one side of the other set of sliding frames 203, and the gear is located on the inner wall of the sliding frame 203. Another crushing shaft 102 is rotatably connected between the other set of sliding frames 203, and a gear is sleeved and fixed at the connection of this crushing shaft 102, and the two gears are meshed with each other.

[0044] Through the cooperation of the two gears, when the small pulley one 205 rotates, the rotation direction can be reversed, so that the two crushing shafts 102 are in a state of rotating in opposite directions, thus achieving the crushing effect.

[0045] Further, in the above structure, the adjusting component 003 further includes a limiting groove 304 symmetrically formed on the surface of the rotating rod 301. A large bevel gear 305 is sleeved on the rotating rod 301. Limiting blocks 306 are symmetrically installed on the inner wall of the large bevel gear 305, and the limiting blocks 306 are slidably connected to the corresponding limiting grooves 304.

[0046] Through the cooperation of the limiting blocks 306 and the limiting grooves 304, the large bevel gear 305 can move up and down on the rotating rod 301, but when the large bevel gear 305 rotates, it needs to drive the rotating rod 301 to rotate.

[0047] Further, in the above structure, a first spring 307 is sleeved on the rotating rod 301, and a pushing ring 308 is sleeved on the rotating rod 301. Both sides of the first spring 307 are respectively in contact with the pushing ring 308 and the connection between the rotating rod 301 and the crushing box 101. Connecting arms 310 are symmetrically and rotatably connected above the connecting frame 303, and the upper parts of the two groups of connecting arms 310 are respectively rotatably connected to the lower parts of the corresponding sliding frames 203.

[0048] By the first spring 307 pushing the pushing ring 308 to move, the position of the large bevel gear 305 on the rotating rod 301 is maintained, so that the large bevel gear 305 and the small bevel gear 502 are always in a meshed state, and the sliding frame 203 can be driven to move left and right through the connecting arms 310, so as to realize the reciprocating movement of the two crushing shafts 102.

[0049] Further, in the above structure, the screening component 004 further includes a fixed baffle 406. A connecting rod 407 penetrates through the fixed baffle 406, and the fixed baffle 406 is fixedly connected to one side of the crushing box 101 by bolts.

[0050] Through the bolt fixation of the fixed baffle 406, the disassembly of the fixed baffle 406 can be realized, and the fixation of the fixed baffle 406 can cause the second spring 408 to be compressed, and the disassembly of the fixed baffle 406 can realize the replacement of sieve trays 403 of different specifications.

[0051] Further, in the above structure, a push rod 409 is installed on one side of the sieve tray 403. The push rod 409 penetrates through the inner wall of the crushing box 101, and the push rod 409 is at the same horizontal position as the corresponding elliptical disc 402. One side of the connecting rod 407 is fixedly connected to the side of the sieve tray 403 away from the push rod 409. A second spring 408 is sleeved on the connecting rod 407, and both sides of the second spring 408 are respectively in contact with the sieve tray 403 and the fixed baffle 406.

[0052] Through the fixation of the fixed baffle 406, when the elliptical disc 402 rotates, it pushes the push rod 409 to move, so that the sieve tray 403 pushes the connecting rod 407 to compress the second spring 408, and under the action of the second spring 408, it returns to its original position, thereby producing a vibrating screening effect.

[0053] Further, in the above structure, the transmission assembly 005 includes a large pulley 501. The large pulley 501 is rotatably connected to one side of the connection frame 303. A small bevel gear 502 is rotatably connected to the inner wall of the connection frame 303, and the small bevel gear 502 is axially connected to the large pulley 501. Moreover, the small bevel gear 502 meshes with the large bevel gear 305. A limiting rod 503 is installed on one side of the crushing box 101. A sliding seat 504 is slidably connected to the limiting rod 503. A second small pulley 505 is rotatably connected to one side of the sliding seat 504. A third spring 508 is sleeved on the limiting rod 503, and both sides of the third spring 508 are respectively in contact with the second small pulley 505 and the connection between the limiting rod 503 and the crushing box 101. A third small pulley 506 is installed on one side of the rotating shaft 401. A belt 507 is adhesively connected between the large pulley 501, the two first small pulleys 205, the second small pulley 505, and the third small pulley 506.

[0054] The belt 507 can cause the large pulley 501, the two first small pulleys 205, the second small pulley 505, and the third small pulley 506 to rotate simultaneously. Moreover, the third spring 508 can keep the position of the sliding seat 504 on the limiting rod 503, so that the second small pulley 505 keeps the belt 507 in a taut state all the time, avoiding the situation of the belt 507 slipping. And the small bevel gear 502 can drive the large bevel gear 305 to rotate under the drive of the large pulley 501. And because there are size differences between the large pulley 501 and the two first small pulleys 205, the second small pulley 505, and the third small pulley 506, while the crushing shaft 102 and the rotating shaft 401 rotate at high speed, the rotation speed of the large pulley 501 slows down, and the structure of the small bevel gear 502 cooperating with the large bevel gear 305 can further reduce the rotation speed of the large bevel gear 305.

[0055] Such as Figures 1-9As shown, by starting the motor 206, the crushing shaft 102 rotates, so that the first small pulley 205 drives the opposite first small pulley 205 to rotate through the belt 507. At this time, due to the action of the gears, the two groups of crushing shafts 102 rotate meshingly with each other, and drive the large pulley 501 through the belt 507, so that the small bevel gear 502 drives the large bevel gear 305 to rotate, so that the rotating rod 301 drives the reciprocating screw 302 to rotate. At this time, the reciprocating internal thread cylinder 309 drives the connecting frame 303 to slide up and down, so that the connecting arm 310 drives the two sliding frames 203 to approach each other, so that the crushing shafts 102 approach each other, and through the rotation of the reciprocating screw 302, the reciprocating opposite movement of the two groups of crushing shafts 102 is realized, and the barrel-shaped PVC material recyclables are extruded, so as to be crushed. And during the reciprocating movement, the second small pulley 505 drives the sliding seat 504 to slide along the limiting rod 503, so that when the large pulley 501 moves, the tightness of the belt 507 can be ensured, so as to avoid the phenomenon of the belt 507 slipping, and it drives the third small pulley 506 to rotate, so that the elliptical disc 402 presses the push rod 409, drives the sieve disc 403 to move, and presses the second spring 408 on one side. When the elliptical disc 402 is separated from the push rod 409, the sieve disc 403 is reset at this time, so as to realize the vibration effect, collect the PVC fragments that are not completely crushed, avoid the phenomenon that the fragment sizes vary greatly and affect the subsequent processing, and the size of the sieve disc 403 can be replaced according to the recycling process. Through this structure, the crushing shafts 102 can reciprocate relative to each other during the rotation process, so as to extrude the barrel-shaped PVC material recyclables, avoid the situation of manual auxiliary feeding, reduce the safety risk of the crusher recycling, and improve the crushing quality.

[0056] Only some exemplary embodiments of the present invention have been described by way of illustration above. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of the claims of the present invention.

Claims

1. A pulverizer for PVC recycling, comprising a chassis (001), characterized in that: A crushing box (101) is connected through the upper part of the chassis (001), two groups of crushing shafts (102) are symmetrically arranged in the crushing box (101), and the crushing toothed plates between the two groups of crushing shafts (102) are meshed with each other, and a discharge hopper (103) is connected through the lower part of the chassis (001); The sliding components (002) arranged on both sides of the crushing box (101) include through grooves (201), the through grooves (201) are symmetrically arranged on the inner wall of the crushing box (101), and two through grooves (201) form a group, and two groups are symmetrically arranged on the inner wall of the crushing box (101), and guide rails (202) are symmetrically installed at the upper and lower edges of each group of through grooves (201) on the outer side of the crushing box (101), and sliding frames (203) are symmetrically arranged on both sides of the crushing box (101), and two sliding frames (203) form a group, and two groups are arranged on both sides of the crushing box (101), and guide blocks (204) are symmetrically installed on the inner wall of each group of the sliding frames (203), and the guide blocks (204) are slidably connected with the corresponding guide rails (202); The adjusting assembly (003) disposed on one side of the crushing box (101) comprises a rotating rod (301), the rotating rod (301) being mounted on one side of the crushing box (101), a reciprocating screw rod (302) being rotatably connected below the rotating rod (301), a connecting frame (303) being sleeved on the rotating rod (301), a reciprocating internally threaded barrel (309) being mounted below the inner wall of the connecting frame (303), and the reciprocating internally threaded barrel (309) being threadedly connected to the reciprocating screw rod (302); The screening assembly (004) arranged in the crushing box (101) comprises a rotating shaft (401), the rotating shaft (401) is rotatably connected to the top of the chassis (001), an elliptical disc (402) is sleeved and fixed on the rotating shaft (401), sliding grooves (405) are symmetrically opened on the inner wall of the crushing box (101), a sieve plate (403) is arranged in the crushing box (101), and sliding blocks (404) are symmetrically installed on the sieve plate (403), and the sliding blocks (404) are slidably connected with the corresponding sliding grooves (405).

2. A pulverizer for PVC recovery according to claim 1, characterized in that: The sliding assembly (002) further comprises two groups of small pulleys (205), the two groups of small pulleys (205) being respectively mounted on one side of the two groups of sliding frames (203), a motor (206) being mounted on one side of the sliding frame (203) away from the small pulleys (205), and an output end of the motor (206) being axially connected to the other side of the crushing shaft (102).

3. A pulverizer for PVC recovery according to claim 2, characterized in that: A group of crushing shafts (102) are rotatably connected between a group of the sliding frames (203) close to the motor (206), and the crushing shafts (102) are axially connected to a small pulley (205). A small pulley (205) on one side of another group of the sliding frames (203) is axially connected to a gear, and the gear is located on the inner wall of the sliding frame (203). Another group of crushing shafts (102) are rotatably connected between the other group of the sliding frames (203), and a gear is sleeved and fixed at the connection of the crushing shafts (102), and the two groups of gears are meshed with each other.

4. A pulverizer for PVC recovery according to claim 1, characterized in that: The adjustment component (003) further comprises a limit groove (304), wherein the limit groove (304) is symmetrically arranged on the surface of the rotating rod (301), a large bevel gear (305) is sleeved on the rotating rod (301), and a limit block (306) is symmetrically installed on the inner wall of the large bevel gear (305), and the limit block (306) is slidably connected to the corresponding limit groove (304).

5. A pulverizer for PVC recovery according to claim 1, characterized in that: The rotating rod (301) is sleeved with a spring 1 (307), the rotating rod (301) is sleeved with a push ring (308), and the two sides of the spring 1 (307) are respectively in contact with the connection between the push ring (308) and the rotating rod (301) and the crushing box (101), and the upper part of the connecting frame (303) is symmetrically rotatably connected with a connecting arm (310), and the upper parts of the two groups of connecting arms (310) are respectively rotatably connected with the lower parts of the corresponding sliding frames (203).

6. A pulverizer for PVC recovery according to claim 1, characterized in that: The screening assembly (004) further comprises a fixed baffle (406), a connecting rod (407) running through the fixed baffle (406), and the fixed baffle (406) is fixedly connected to one side of the crushing box (101) by means of bolts.

7. A pulverizer for PVC recovery according to claim 6, characterized in that: A push rod (409) is installed on one side of the sieve plate (403), and the push rod (409) is connected to the inner wall of the crushing box (101) through and through, and the push rod (409) and the corresponding elliptical plate (402) are at the same horizontal position, and one side of the connecting rod (407) is fixedly connected to the side of the sieve plate (403) away from the push rod (409), and a second spring (408) is sleeved on the connecting rod (407), and the two sides of the second spring (408) are respectively in contact with the sieve plate (403) and the fixed baffle (406).

8. A pulverizer for PVC recovery according to claim 1, characterized in that: The transmission assembly (005) comprises a large pulley (501), the large pulley (501) is rotatably connected to one side of a connection frame (303), a small bevel gear (502) is rotatably connected to the inner wall of the connection frame (303), the small bevel gear (502) is axially connected to the large pulley (501), and the small bevel gear (502) is meshed with the large bevel gear (305), a limiting rod (503) is installed on one side of the crushing box (101), a sliding seat (504) is slidably connected to the limiting rod (503), and the sliding seat (504) is slidably connected to the limiting rod (503). One side of the seat (504) is rotatably connected with a small pulley two (505), the limiting rod (503) is sleeved with a spring three (508), and the two sides of the spring three (508) are respectively fitted with the connection between the small pulley two (505) and the limiting rod (503) and the crushing box (101), and one side of the rotating shaft (401) is installed with a small pulley three (506), and a belt (507) is fitted between the large pulley (501), the two groups of small pulleys one (205), the small pulley two (505) and the small pulley three (506).

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