A polystyrene processing pulverizing device

Abstract

This invention discloses a polystyrene processing and crushing device, specifically relating to the field of plastic crushing and recycling technology. It includes a crushing chamber, a crushing tooth cover sleeve, and an external recovery component. The crushing chamber contains multiple crushing teeth for crushing and recycling polystyrene, with a cover sleeve on one side of each crushing tooth. The external recovery component is installed at one end of the cover sleeve. This invention simultaneously maintains and separates polystyrene impurities adhering to the outside of the crushing teeth and the sides of each tooth tip, significantly shortening downtime for maintenance due to malfunctions in the polystyrene crushing equipment. It not only reduces the maintenance cost of non-metallic polystyrene waste crushing and processing equipment but also ensures the high efficiency of non-metallic polystyrene waste crushing, processing, and recycling. This solves the problem of increased equipment maintenance costs and a significant reduction in the efficiency of non-metallic polystyrene waste crushing, processing, and recycling.

Description

Technical Field

[0001] This invention relates to the field of plastic crushing and recycling technology, and more specifically, to a polystyrene processing and crushing device. Background Technology

[0002] In the recycling and processing of non-metallic waste, polystyrene processing and crushing equipment plays a core role in waste recycling and processing, including volume reduction and transportation, regeneration and granulation, filling and utilization, and cracking of raw materials, thus realizing a closed-loop material cycle. This process retains the molecular structure of polystyrene through physical recycling, reducing dependence on new raw materials.

[0003] In existing publicly available literature, patent publication number CN201645687U discloses a recycling mechanism for polystyrene foam. This technology discharges polystyrene foam through a hopper outlet into a crushing device for pulverization, breaking it down into polystyrene foam particles. These particles are then conveyed by a conveying device to a discharge device, where they are finally discharged. The discharged polystyrene foam particles can be reused to process polystyrene foam, reducing resource waste, preventing white pollution, and thus protecting the environment. However, this technology still has the following problems.

[0004] Non-metallic polystyrene waste needs to be crushed and pulverized for recycling. During crushing, the waste comes into contact with the high-speed rotating crushing teeth, and some waste remains on the outside and sides of each tooth tip. Since the teeth are located inside the equipment and there are many of them, it is difficult for personnel to perform efficient external and lateral covering maintenance on these parts. Once a malfunction occurs, the machine needs to be stopped for maintenance. However, due to the difficulty of maintenance, the downtime for maintenance is long, resulting in low efficiency of crushing and recycling. This situation not only increases the equipment maintenance cost, but also significantly reduces the efficiency of non-metallic polystyrene waste processing, crushing and recycling. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides the following technical solution: a polystyrene processing and crushing device, including a crushing box, wherein a plurality of crushing teeth for crushing and recycling polystyrene are installed inside the crushing box, and a cover sleeve is provided on one side of the crushing teeth;

[0006] External recovery components are installed at one end of the cover sleeve;

[0007] A side recovery assembly is installed on the outer wall of the cover sleeve, and the side recovery assembly is provided with multiple sets of oblique side blades;

[0008] A positioning and alignment unit is installed inside the chipping teeth;

[0009] The positioning and alignment unit is used to align the chipped teeth with the cover sleeve at a specified angle;

[0010] The peripheral recovery component drives the cover to move on the outer wall of the fractured tooth to separate polystyrene impurities adhering to the outside of the fractured tooth;

[0011] The side recovery assembly drives multiple sets of oblique side cutters to rotate synchronously, so as to simultaneously separate the polystyrene impurities adhering to both sides of each tooth tip of the broken tooth.

[0012] In a preferred embodiment, the side recovery assembly includes:

[0013] A linear servo is fixed to the outer wall of the cover sleeve. The output end of the linear servo is connected to a linkage block. A positioning plate is fixed to one side of the linkage block. The output end of the linear servo is used to push the linkage block to move. The positioning plate slides along the inner wall of the crushing box.

[0014] Multiple pull blocks are fixed to one side of the positioning plate and near its edge. Each pull block has a steel rope fixed to one end for traction. An L-shaped sleeve is installed on the outer wall of the steel rope. Multiple L-shaped sleeves are fixedly connected to the cover sleeve. The L-shaped sleeves are used to guide the movement of the steel rope.

[0015] A sling is installed at the bottom end of a steel rope, which is used to pull the sling to rotate.

[0016] A spring is installed at the bottom end of the sleeve. The spring is used to provide elastic force to the sleeve. A rotating rod is fixed on the inner wall of the sleeve. A positioning sleeve is installed on the outer wall of the rotating rod near its end. The positioning sleeve is used to position the rotation of the rotating rod. The positioning sleeve is fixedly connected to the cover sleeve. Both ends of the positioning sleeve have rotating rings. The oblique side knife and the rotating rod are fixedly connected to the rotating rings.

[0017] In a preferred embodiment, both the cover and the sleeve are fixedly connected to the spring piece, and the vertical cross-sectional shape of the spring piece is V-shaped.

[0018] In a preferred embodiment, the oblique side blade is slidably connected to the cover sleeve, and the number of oblique side blades in each group is set to two, with the two oblique side blades arranged symmetrically about the cover sleeve.

[0019] In a preferred embodiment, the external recovery component includes:

[0020] A linkage bar is fixed to one end of the cover sleeve. A proximity sensor is installed on the upper inclined surface of the linkage bar. An electric cylinder is installed at one end of the linkage bar. The output end of the electric cylinder is used to push the linkage bar to move. The outer wall of the electric cylinder is fixedly connected to the crushing box.

[0021] Multiple sensing strips are located above the electric cylinder, and each of the multiple sensing strips corresponds to a multiple crushing tooth. The multiple sensing strips are fixedly connected to the crushing box.

[0022] In a preferred embodiment, a gap is provided between two adjacent sensing strips, and the upper inclined surface of the proximity sensor is arranged parallel to the lower inclined surface of the sensing strip.

[0023] In a preferred embodiment, a plurality of the sensing strips are arranged sequentially from left to right, and the output end of the electric cylinder is fixedly connected to the linkage strip.

[0024] In a preferred embodiment, the positioning and alignment unit includes;

[0025] A drive shaft is fixed to the inner wall of the crushing teeth. A motor is installed at one end of the drive shaft to drive the drive shaft to rotate. The outer wall of the motor is fixedly connected to the crushing box.

[0026] A sleeve plate is installed on the outer wall of the drive shaft and near its other end. The sleeve plate is used to position the drive shaft to rotate. A bracket is installed on one side of the sleeve plate. The crushing box and the sleeve plate are both fixedly connected to the bracket.

[0027] A distance sensor is mounted on the upper surface of the bracket, a sensing block is fixed to the other end of the drive shaft, and a controller is provided below the bracket.

[0028] In a preferred embodiment, the lower surface of the sensing block is arranged parallel to the upper surface of the distance sensor, and the distance sensor is used to sense the distance between the sensing block and the distance sensor.

[0029] In a preferred embodiment, both the distance sensor and the motor are electrically connected to the controller, and the controller is fixedly connected to the crushing chamber.

[0030] The technical effects and advantages of the present invention.

[0031] 1. This invention uses an external recovery component to drive a cover sleeve to move on the outer wall of the crushing teeth, thereby separating polystyrene impurities adhering to the outside of the crushing teeth. A side recovery component drives multiple sets of oblique side blades to rotate synchronously, allowing for the simultaneous separation of polystyrene impurities adhering to both sides of each tooth tip. Combined with a positioning and alignment unit, this achieves automated and efficient maintenance of the crushing teeth inside the crushing equipment. It can simultaneously maintain and separate polystyrene impurities adhering to the outside of the crushing teeth and both sides of each tooth tip, significantly reducing downtime for maintenance due to malfunctions in polystyrene crushing equipment. This effectively solves the problem of low efficiency in polystyrene waste crushing and recycling caused by difficult maintenance, not only reducing the maintenance cost of non-metallic polystyrene waste crushing and processing equipment but also ensuring the high efficiency of non-metallic polystyrene waste crushing, processing, and recycling.

[0032] 2. This invention employs an external recovery component to drive the cover sleeve to move along the fractured teeth, effectively separating polystyrene impurities from the outside of the fractured teeth. The side recovery component, through steel cable traction and spring plate reset, drives multiple sets of oblique side blades to rotate synchronously, precisely maintaining the areas on both sides of each tooth tip that are difficult for traditional tools to reach. This comprehensive, multi-point synchronous cleaning method achieves all-round, no-dead-angle maintenance of the working surface of the fractured teeth, ensuring the thoroughness of each maintenance, fundamentally restoring the crushing efficiency of the fractured teeth, and reducing the risk of repeated failures due to incomplete maintenance, thereby ensuring the high efficiency of non-metallic polystyrene waste crushing, processing, and recycling.

[0033] 2. This invention achieves precise angular positioning of the crushing teeth before maintenance through the cooperation of a distance sensor and a sensing block, ensuring accurate alignment between the cover and the crushing teeth. Simultaneously, a proximity sensor and a sensing strip control the travel of the cover, enabling it to precisely stop at the designated working position, and ensuring that each set of oblique side blades stops at the designated working position. This intelligent positioning and control not only improves the accuracy and reliability of maintenance operations and avoids potential damage to the equipment due to misoperation, but also reduces reliance on professional personnel, ensuring the high efficiency of non-metallic polystyrene waste crushing, processing, and recycling. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the main structure of the polystyrene processing and crushing device of the present invention.

[0035] Figure 2 This is a schematic diagram of the vertical cross-section of the polystyrene processing and crushing device of the present invention.

[0036] Figure 3 This is a schematic diagram of a partial cut-off structure at the connection between the cover sleeve and the linear servo motor of the present invention.

[0037] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle.

[0038] Figure 5 This is a partial structural diagram of the connection between the sleeve and the rotating rod of the present invention.

[0039] Figure 6 This is a top view of the cross-section of the polystyrene processing and crushing device of the present invention.

[0040] Figure 7 This is a partial structural diagram of the sensing strip and electric cylinder of the present invention.

[0041] Figure 8 This is a bottom view of the polystyrene processing and crushing device of the present invention.

[0042] Figure 9This is a partial structural diagram of the connection between the bracket and the sleeve plate of the present invention.

[0043] The attached diagram is labeled as follows: 1. Crushing box; 2. Crushing teeth; 3. Cover sleeve; 4. Angled side blade; 5. Linear servo; 6. Linkage block; 7. Positioning plate; 8. Pull block; 9. Steel rope; 10. L-shaped sleeve; 11. Sleeve strip; 12. Spring piece; 13. Positioning sleeve; 14. Rotating rod; 15. Rotating ring; 16. Linkage bar; 17. Proximity sensor; 18. Sensing bar; 19. Electric cylinder; 20. Drive shaft; 21. Motor; 22. Sleeve plate; 23. Bracket; 24. Distance sensor; 25. Sensing block; 26. Controller. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] like Figure 1 - Figure 9 The polystyrene processing and pulverizing device shown includes a pulverizing chamber 1, inside which are installed multiple pulverizing teeth 2 for pulverizing and recycling polystyrene. A cover sleeve 3 is provided on one side of each pulverizing tooth 2. An external recovery component is installed at one end of the cover sleeve 3. A side recovery component is installed on the outer wall of the cover sleeve 3, and multiple sets of oblique side blades 4 are provided on the side recovery component. A positioning and alignment unit is installed inside the pulverizing teeth 2. The positioning and alignment unit is used to align the pulverizing teeth 2 with the cover sleeve 3 at a specified angle. The external recovery component drives the cover sleeve 3 to move on the outer wall of the pulverizing teeth 2 to separate polystyrene impurities adhering to the outside of the pulverizing teeth 2. The side recovery component drives the multiple sets of oblique side blades 4 to rotate synchronously to synchronously separate the polystyrene impurities adhering to both sides of each tooth tip of the pulverizing teeth 2.

[0046] In this embodiment, as Figure 1 - Figure 5As shown, the side recovery assembly includes: a linear servo motor 5, fixed to the outer wall of the cover sleeve 3; a linkage block 6 connected to the output end of the linear servo motor 5; a positioning plate 7 fixed to one side of the linkage block 6; the output end of the linear servo motor 5 is used to push the linkage block 6 to move; the positioning plate 7 slides along the inner wall of the crushing box 1; multiple pull blocks 8, all fixed to one side of the positioning plate 7 and near its edge; a steel rope 9 for traction is fixed to one end of each pull block 8; an L-shaped sleeve 10 is installed on the outer wall of the steel rope 9; multiple L-shaped sleeves 10 are fixedly connected to the cover sleeve 3; the L-shaped sleeves 10 are fixed to the outer wall of the cover sleeve 3. Sleeve 10 guides the movement of steel rope 9; sleeve 11 is installed at the bottom end of steel rope 9, and steel rope 9 is used to pull sleeve 11 to rotate; spring piece 12 is installed at the bottom end of sleeve 11, and spring piece 12 is used to provide elastic force to sleeve 11; a rotating rod 14 is fixed on the inner wall of sleeve 11, and a positioning sleeve 13 is installed on the outer wall of rotating rod 14 near its end, positioning sleeve 13 is used to position the rotation of rotating rod 14, positioning sleeve 13 is fixedly connected to cover sleeve 3, and rotating rings 15 are rotatable at both ends of positioning sleeve 13. The oblique side knife 4 and rotating rod 14 are both fixedly connected to rotating rings 15. Cover sleeve 3 and sleeve 11 are both fixedly connected to spring piece 12, and the vertical cross-section of spring piece 12 is V-shaped. Oblique side knife 4 is slidably connected to cover sleeve 3, and the number of oblique side knives 4 in each group is set to two, with the two oblique side knives 4 symmetrically arranged about cover sleeve 3.

[0047] In use, the linear servo motor 5 pushes the linkage block 6 to move to the left, the positioning plate 7 drives multiple pull blocks 8 to move to the left synchronously, the bottom end of the steel rope 9 pulls the sleeve 11 to rotate clockwise, the sleeve 11 pulls the spring 12, the sleeve 11 drives the rotating rod 14 to rotate clockwise, the rotating rod 14 drives the rotating ring 15 to rotate clockwise, the rotating ring 15 drives the oblique side blade 4 to rotate clockwise, and multiple sets of oblique side blades 4 rotate synchronously to simultaneously separate the polystyrene impurities adhering to both sides of each tooth tip of the crushing tooth 2, which greatly shortens the downtime maintenance time of the polystyrene crushing equipment due to failure and ensures the high efficiency of non-metallic polystyrene waste crushing, processing and recycling.

[0048] In this embodiment, as Figure 6 - Figure 7 As shown, the external recovery assembly includes: a linkage bar 16, fixed to one end of the cover sleeve 3; a proximity sensor 17 is mounted on the upper inclined surface of the linkage bar 16; an electric cylinder 19 is mounted on one end of the linkage bar 16; the output end of the electric cylinder 19 is used to push the linkage bar 16 to move; the outer wall of the electric cylinder 19 is fixedly connected to the crushing box 1; and multiple sensing bars 18, all located above the electric cylinder 19, with each sensing bar 18 corresponding to one of the multiple crushing teeth 2, and all sensing bars 18 are fixedly connected to the crushing box 1. A gap is provided between adjacent sensing bars 18, and the upper inclined surface of the proximity sensor 17 is parallel to the lower inclined surface of the sensing bar 18. The multiple sensing bars 18 are arranged sequentially from left to right, and the output end of the electric cylinder 19 is fixedly connected to the linkage bar 16.

[0049] In use, the output of the electric cylinder 19 pushes the linkage bar 16 to the left, the cover sleeve 3 drives the linear servo motor 5 to the left, the linkage block 6 drives the positioning plate 7 to the left, and the positioning plate 7 moves to the left along the guide of the sleeve plate 22. As a result, the cover sleeve 3 is scooped and separated along the outer wall of the crushing tooth 2, separating the polystyrene impurities adhering to the outside of the crushing tooth 2. The proximity sensor 17 senses the first sensing bar 18, and the controller 26 shuts off the electric cylinder 19. In this way, the middle part of the cover sleeve 3 is positioned and docked in the middle position of the crushing tooth 2. This not only separates the polystyrene impurities adhering to the outside of the crushing tooth, but also automatically positions and processes them, making self-maintenance more efficient and ensuring the high efficiency of non-metallic polystyrene waste crushing, processing and recycling.

[0050] In this embodiment, as Figure 8 - Figure 9 As shown, the positioning and alignment unit includes: a drive shaft 20, fixed to the inner wall of the crushing teeth 2, a motor 21 installed at one end of the drive shaft 20, the motor 21 being used to drive the drive shaft 20 to rotate, and the outer wall of the motor 21 being fixedly connected to the crushing box 1; a sleeve plate 22, installed on the outer wall of the drive shaft 20 and near its other end, the sleeve plate 22 being used to position the drive shaft 20 to rotate, a bracket 23 being installed on one side of the sleeve plate 22, and the crushing box 1 and the sleeve plate 22 being fixedly connected to the bracket 23; a distance sensor 24, installed on the upper surface of the bracket 23, a sensing block 25 being fixed at the other end of the drive shaft 20, and a controller 26 being provided below the bracket 23.

[0051] The lower surface of the sensing block 25 is arranged parallel to the upper surface of the distance sensor 24, which is used to sense the distance between the sensing block 25 and the distance sensor 24. Both the distance sensor 24 and the motor 21 are electrically connected to the controller 26, and the controller 26 is fixedly connected to the crushing box 1.

[0052] In use, the motor 21 drives the transmission shaft 20 to rotate at low speed. After the sensing block 25 is aligned with the distance sensor 24, the distance sensor 24 senses the distance between the sensing block 25 and the distance sensor 24. When the sensed distance value is the same as the distance value set by the controller 26, the motor 21 is turned off by the controller 26, so that the fragmentation tooth 2 is aligned with the cover sleeve 3 at a specified angle. This ensures that the cover sleeve 3 can move to the left and fit onto the outer wall of the fragmentation tooth 2, separating the polystyrene impurities adhering to the outside of the fragmentation tooth 2, and achieving precise alignment.

[0053] The working principle of the polystyrene processing and pulverizing device of the present invention is as follows.

[0054] Step 1: During the crushing and recycling of polystyrene waste, the controller 26 starts the motor 21, which drives the transmission shaft 20 to rotate inside the crushing chamber 1. Simultaneously, the transmission shaft 20 drives multiple crushing teeth 2 to rotate, and the transmission shaft 20 rotates stably inside the sleeve plate 22. Then, the polystyrene waste is placed inside the crushing chamber 1, and the transmission shaft 20 drives the multiple crushing teeth 2 to crush the polystyrene waste. After the plastic is crushed, polystyrene impurities adhere to the outside of the crushing teeth 2 and to the sides of each tooth. When maintenance and restoration of the crushing teeth 2 are required, the controller 26 shuts off the high-speed drive motor 21.

[0055] Step 2: During positioning and alignment, the motor 21 is started by the controller 26. The motor 21 drives the transmission shaft 20 to rotate at low speed. The transmission shaft 20 drives the sensing block 25 to rotate. After the sensing block 25 is aligned with the distance sensor 24, the support bracket 23 of the crushing box 1 supports the distance sensor 24. The distance sensor 24 senses the distance between the sensing block 25 and the distance sensor 24. When the sensed distance value is the same as the distance value set by the controller 26, the motor 21 is turned off by the controller 26. This stops the transmission shaft 20 from rotating and aligns the sensing end of the sensing block 25 with the sensing end of the distance sensor 24. This allows the crushing tooth 2 to be aligned with the cover sleeve 3 at a specified angle, ensuring that the cover sleeve 3 can fit on the outer wall of the crushing tooth 2 when it moves to the left.

[0056] Step 3: During external restoration, the electric cylinder 19 is activated via the controller 26. The output of the electric cylinder 19 pushes the linkage bar 16 to the left, which in turn moves the cover sleeve 3 to the left. The cover sleeve 3 then moves the linear servo motor 5 to the left, which in turn moves the linkage block 6 to the left. The linkage block 6 then moves the positioning plate 7 to the left. The positioning plate 7 slides to the left along the inner wall of the crushing box 1, and simultaneously moves to the left along the guide of the sleeve plate 22. The cover sleeve 3 moves to the left and engages with the outer wall of the crushing teeth 2, thus causing the cover sleeve 3 to scrape along the outer wall of the crushing teeth 2. Separate the polystyrene impurities adhering to the outside of the fracture tooth 2, restoring the fracture tooth 2 to a state free of polystyrene impurities. At the same time, the linkage bar 16 drives the proximity sensor 17 to move to the left. The proximity sensor 17 senses the first sensing bar 18. When the proximity sensor 17 senses the proximity, the controller 26 shuts off the electric cylinder 19. In this way, the middle part of the cover sleeve 3 is positioned and docked in the middle position of the fracture tooth 2. At the same time, the two oblique side blades 4 on each set of oblique side blades 4 can dock in the two side areas of the fracture tooth 2 according to the two sides of the cover sleeve 3.

[0057] Step 4: When restoring the side assembly, the linear servo 5 is immediately activated via controller 26. The linear servo 5 pushes the linkage block 6 to move left, which in turn moves the positioning plate 7 to move left. The positioning plate 7 then moves multiple pull blocks 8 to move left simultaneously. The pull blocks 8 pull the top of the steel cable 9, causing the steel cable 9 to move along the inner wall of the L-shaped sleeve 10. The bottom end of the steel cable 9 pulls the sleeve strip 11 to rotate clockwise. The sleeve strip 11 pulls the spring piece 12, which provides elastic force to the sleeve strip 11. The sleeve strip 11 then drives the rotating rod 14 to rotate clockwise. The rotating rod 14 rotates clockwise inside the positioning sleeve 13, and the rotating rod 14 also drives the rotating ring 15 to rotate clockwise. 15 drives the oblique side blade 4 to rotate clockwise. The oblique side blade 4 rotates clockwise along the side of the cover sleeve 3. The oblique side blade 4 rotates clockwise to scrape the side of the tooth tip of the crushing tooth 2. Multiple sets of oblique side blades 4 rotate synchronously to simultaneously separate the polystyrene impurities adhering to both sides of each tooth tip of the crushing tooth 2. This enables rapid maintenance and restoration of both sides of each tooth tip of the crushing tooth 2. Other crushing teeth 2 can also be quickly maintained in the same way to restore the normal polystyrene waste crushing function. It can achieve large-area synchronous and efficient treatment of the exterior of the crushing tooth 2 and both sides of each tooth tip, and the self-maintenance and restoration efficiency is greatly improved.

[0058] All contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are existing technologies and are therefore not shown in the figures, nor will they be described here.

[0059] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A polystyrene processing and crushing device, comprising a crushing chamber, wherein the interior of the crushing chamber is equipped with a plurality of crushing teeth for crushing and recycling polystyrene, characterized in that: A cover sleeve is provided on one side of the chipping tooth; External recovery components are installed at one end of the cover sleeve; The side recovery assembly is installed on the outer wall of the cover sleeve, and multiple sets of oblique side blades are provided on the side recovery assembly; A positioning and alignment unit is installed inside the chipping teeth; The positioning and alignment unit is used to align the chipped teeth with the cover sleeve at a specified angle; The peripheral recovery component drives the cover to move on the outer wall of the fractured tooth to separate polystyrene impurities adhering to the outside of the fractured tooth; The side recovery assembly drives multiple sets of oblique side cutters to rotate synchronously, so as to simultaneously separate the polystyrene impurities adhering to both sides of each tooth tip of the fractured tooth. The side recovery assembly includes: A linear servo is fixed to the outer wall of the cover sleeve. The output end of the linear servo is connected to a linkage block. A positioning plate is fixed to one side of the linkage block. The output end of the linear servo is used to push the linkage block to move. The positioning plate slides along the inner wall of the crushing box. Multiple pull blocks are fixed to one side of the positioning plate and near its edge. Each pull block has a steel rope fixed to one end for traction. The outer wall of the steel rope is fitted with an L-shaped sleeve. Multiple L-shaped sleeves are fixedly connected to the cover sleeve. The L-shaped sleeves are used to guide the movement of the steel rope. A sling is installed at the bottom of a steel rope, which is used to pull the sling to rotate. A spring clip is installed at the bottom end of the sleeve to provide elastic force to the sleeve. A rotating rod is fixed to the inner wall of the sleeve, and a positioning sleeve is installed on the outer wall of the rotating rod near its end. The positioning sleeve is used to position the rotation of the rotating rod. The positioning sleeve is fixedly connected to the cover sleeve. Both ends of the positioning sleeve have rotating rings. The beveled side cutter and the rotating rod are fixedly connected to the rotating rings. The external recovery assembly includes: The linkage bar is fixed to one end of the cover sleeve. A proximity sensor is installed on the upper inclined surface of the linkage bar. An electric cylinder is installed at one end of the linkage bar. The output end of the electric cylinder is used to push the linkage bar to move. The outer wall of the electric cylinder is fixedly connected to the crushing box. Multiple sensor strips are located above the electric cylinder, and each sensor strip corresponds to a different crushing tooth. All sensor strips are fixedly connected to the crushing box.

2. The polystyrene processing and pulverizing device according to claim 1, characterized in that: Both the cover and the sleeve are fixedly connected to the spring piece, and the vertical cross-sectional shape of the spring piece is V-shaped.

3. The polystyrene processing and pulverizing device according to claim 1, characterized in that: The oblique side blade is slidably connected to the cover sleeve, and the number of oblique side blades in each group is set to two, with the two oblique side blades arranged symmetrically about the cover sleeve.

4. The polystyrene processing and pulverizing device according to claim 1, characterized in that: A gap is provided between two adjacent sensing strips, and the upper inclined surface of the proximity sensor is arranged parallel to the lower inclined surface of the sensing strip.

5. A polystyrene processing and pulverizing device according to claim 1, characterized in that: Multiple sensor bars are arranged sequentially from left to right, and the output end of the electric cylinder is fixedly connected to the linkage bar.

6. The polystyrene processing and pulverizing device according to claim 1, characterized in that: The positioning and alignment unit includes: A drive shaft is fixed to the inner wall of the crushing teeth. A motor is installed at one end of the drive shaft to drive the drive shaft to rotate. The outer wall of the motor is fixedly connected to the crushing box. A sleeve plate is installed on the outer wall of the drive shaft and near its other end. The sleeve plate is used to position the drive shaft to rotate. A bracket is installed on one side of the sleeve plate. The crushing box and the sleeve plate are both fixedly connected to the bracket. A distance sensor is mounted on the upper surface of the bracket, a sensing block is fixed to the other end of the drive shaft, and a controller is provided below the bracket.

7. A polystyrene processing and pulverizing device according to claim 6, characterized in that: The lower surface of the sensing block is arranged parallel to the upper surface of the distance sensor, and the distance sensor is used to sense the distance between the sensing block and the distance sensor.

8. A polystyrene processing and pulverizing device according to claim 6, characterized in that: The distance sensor and the motor are both electrically connected to the controller, and the controller is fixedly connected to the crushing box.

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