Polystyrene plastic crushing and recycling device

Abstract

The invention relates to the technical field of polystyrene plastic recycling, and discloses a polystyrene plastic crushing and recycling device which comprises a crushing shell and a crushing cavity formed in the top surface of the crushing shell, a crushing roller is rotatably mounted on one side of the inner wall of the crushing cavity, and a driving motor for driving the crushing roller is fixedly mounted on the side surface of the crushing shell; a pushing seat is slidably mounted on the inner wall of the crushing cavity, and a pushing plate is arranged at the end of the pushing seat. The driving motor is in linkage with the reciprocating lead screw and the bevel gear for transmission, the material pushing plate is driven to achieve double actions of continuous feeding and reciprocating pushing, the stirring plate, the spring telescopic rod and the torsional spring are matched, the material pushing plate repeatedly acts on polystyrene plastic in the continuous moving process of the pushing seat, material accumulation caused by single thrust is avoided, and the material pushing efficiency is improved. Due to the design of the operating rod and the linkage plate, the pushing seat can be quickly reset and abdicated, secondary feeding is facilitated, the problems that irregular plastics are not pushed in place and are blocked are solved, the shutdown cleaning frequency of equipment is reduced, and the continuous and stable crushing process is guaranteed.

Description

Technical Field

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

[0002] Polystyrene is a thermoplastic polymer made from styrene monomers synthesized from petrochemical products through free radical polymerization. As an important type of general-purpose plastic, its molecular chain contains rigid benzene ring groups, and it belongs to linear non-crystalline plastics. It combines rigidity and processing fluidity, and is one of the synthetic plastics with large production volume and wide application.

[0003] A search revealed that Chinese patent CN217670489U discloses a plastic shredder for waste recycling, comprising a main body, a feed hopper at the top of the main body, a shredding assembly inside the main body, and a discharge hopper at the bottom of the main body. The shredding assembly includes a power motor fixedly mounted on one side of the outer wall of the main body, an active shredding component, and a passive shredding component inside the main body. The active shredding component includes a power shaft connected to the output end of the power motor and a toothed cylinder fixedly mounted on the power shaft. The passive shredding component includes an adjustable biting tooth assembly arranged around the toothed cylinder. The shredding effect on plastic is improved through the tearing action between the active and passive shredding components. The adjustable biting tooth assembly greatly expands the applicability of the shredding process. However, this solution still has the following shortcomings in practical use: In plastic shredding and crushing operations, when a linear thrust structure connected to the main plate is used to push the plastic to be crushed, the linear thrust operates in a relatively simple manner, with a fixed and concentrated thrust direction. Furthermore, linear thrust lacks buffering and adjustment capabilities, and during the pushing process, impact loads may occur due to plastic jamming or a sudden increase in resistance. This not only affects pushing efficiency but may also cause additional wear on the main plate and thrust transmission components. In addition, the fixed-direction linear thrust makes it difficult to drive the plastic to form a continuous and uniform feeding motion in the toothed cylinder area. Some plastic may accumulate at the toothed cylinder inlet due to force imbalance, failing to smoothly enter the crushing chamber to participate in shearing and crushing. This reduces crushing efficiency and the uniformity of crushed particles, and may also increase the frequency of equipment downtime for cleaning, affecting the continuity of the overall production process.

[0004] Therefore, it is necessary to design a polystyrene plastic crushing and recycling device to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a polystyrene plastic crushing and recycling device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A polystyrene plastic crushing and recycling device includes a crusher housing and a crushing chamber formed on the top surface of the crusher housing. A crushing roller is rotatably mounted on one side of the inner wall of the crushing chamber. A drive motor for driving the crushing roller is fixedly mounted on the side of the crusher housing. A pusher seat is slidably mounted on the inner wall of the crushing chamber. A pusher plate is provided at the end of the pusher seat. An installation structure is provided between the pusher seat and the pusher plate. A drive assembly corresponding to the pusher seat is provided on the side of the crusher housing. A sliding plate is slidably mounted on the side of the crusher housing. A fixing plate corresponding to the sliding plate is fixedly mounted on the side of the crusher housing. A spring telescopic rod is fixedly mounted between the fixing plate and the end of the sliding plate. A reciprocating assembly corresponding to the pusher plate is provided on the top surface of the sliding plate. A discharge hopper is fixedly mounted on the outside of the discharge port of the crusher housing. A grinding assembly is provided on the inside of the discharge hopper.

[0007] As a preferred embodiment of the present invention, the mounting structure includes a guide groove formed at the end of the pusher seat, a guide block is slidably mounted on the inner wall of the guide groove, and the pusher plate is fixedly connected to the guide block. Two springs are symmetrically fixedly mounted between the side of the guide block and the inner wall of the guide groove.

[0008] As a preferred embodiment of the present invention, the drive assembly includes a guide port formed on the side of the crusher housing and communicating with the crushing chamber. A guide plate is fixedly installed on the side of the push seat. A reciprocating screw is rotatably installed on the side of the crusher housing via a bracket. The guide plate passes through the guide port and its end is threaded onto the outer wall of the reciprocating screw. A drive bevel gear that is linked to the crushing roller is rotatably installed on the side of the crusher housing. A driven bevel gear that meshes with the drive bevel gear is fixedly installed at the end of the reciprocating screw.

[0009] As a preferred embodiment of the present invention, the guide plate is L-shaped, and the side of the guide plate is in contact with the inner wall of the guide opening.

[0010] As a preferred embodiment of the present invention, the reciprocating assembly includes a connecting plate fixedly installed on the side of the pusher plate. The end of the connecting plate passes through the guide opening and a push rod is fixedly installed on its bottom surface. The top surface of the slide plate has a plurality of slots arranged in a linear array. The inner wall of the slots is rotatably mounted with push plates via a rotating shaft and a torsion spring. The sides of the plurality of push plates are rotatably mounted with linkage plates. The top surface of the slide plate has a receiving groove corresponding to the linkage plates and communicating with the slots. The side of the crusher housing is fixedly mounted with a protective cover located outside the drive bevel gear, the reciprocating screw, and the guide opening. The top surface of the protective cover is provided with a reset structure corresponding to one of the end push plates.

[0011] As a preferred embodiment of the present invention, a transmission plate is fixedly installed on the bottom surface of the slide plate, and a plurality of paddles arranged in a circular array and corresponding to the transmission plate are fixedly installed on the outer wall of the drive bevel gear.

[0012] As a preferred embodiment of the present invention, the side of the push plate is provided with a clearance opening corresponding to the push rod.

[0013] As a preferred embodiment of the present invention, the reset structure includes an operating rod that passes through the top surface of the protective cover, a pressure plate that is fixedly installed at the bottom end of the operating rod, a second spring that is fitted on the outer wall of the operating rod, and the two ends of the second spring that are fixedly connected to the operating rod and the protective cover, respectively.

[0014] As a preferred embodiment of the present invention, the grinding assembly includes a guide hopper fixedly installed on the inner wall of the discharge hopper. Two support rods are symmetrically arranged through one end of the discharge hopper. A crushing plate is fixedly installed at the end of the support rod located inside the discharge hopper. A spring is fitted on the outer wall of the support rod, and the two ends of the spring are fixedly connected to the support rod and the discharge hopper, respectively. A top rod is fixedly installed at the end of the crushing plate away from the support rod, and the end of the top rod passes through the side of the discharge hopper. A transmission disk is rotatably installed on the side of the discharge hopper, and the transmission disk is connected to the driving bevel gear through a driven wheel and a synchronous belt. A plurality of protrusions arranged in a circular array and corresponding to the top rods are fixedly installed on the side of the transmission disk.

[0015] As a preferred embodiment of the present invention, the teeth on the two crushing plates are arranged in an alternating manner.

[0016] The present invention has the following beneficial effects: 1. In this invention, the reciprocating screw and bevel gear transmission of the drive motor drive the pusher plate to achieve the dual action of continuous feeding and reciprocating pushing. The cooperation of the pusher plate, spring telescopic rod and torsion spring allows the pusher plate to repeatedly act on the polystyrene plastic as the pusher seat moves continuously, avoiding material accumulation caused by a single pushing force. At the same time, the design of the operating lever and linkage plate can quickly reset the pusher seat to make way, which is convenient for secondary feeding. This solves the problem of irregular plastics not being pushed in place and jamming, reduces the frequency of equipment downtime for cleaning, and ensures the continuous and stable crushing process. 2. In this invention, the crushing roller first shreds the plastic, and then the coarse particles are introduced into the space between two relatively moving crushing plates through the discharge hopper. The drive bevel gear drives the crushing plates to reciprocate and grind through components such as the synchronous belt and transmission disc, and performs secondary fine grinding of the material. The dual crushing process combined with the full contact effect of reciprocating pushing improves the uniformity of plastic crushing, ensures that the final particle size fully meets the requirements for recycling and reuse, and improves the quality of recycled materials. 3. In this invention, the entire device uses a drive motor as the core power source and achieves multi-path power transmission through components such as bevel gears, reciprocating screws, and synchronous belts. It synchronously drives the rotation of the crushing roller, the reciprocating motion of the feeding mechanism, and the operation of the grinding components. There is no need to set up multiple additional power units, which simplifies the structure and reduces energy consumption. All mechanisms work together to seamlessly connect feeding, initial crushing, and fine grinding, which shortens the processing time of a single batch of materials, reduces equipment maintenance costs, and improves the overall operating efficiency of polystyrene plastic crushing and recycling. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a polystyrene plastic crushing and recycling device proposed in this invention; Figure 2 This is an exploded view of the pusher seat of a polystyrene plastic crushing and recycling device proposed in this invention; Figure 3 This is a schematic diagram of the side structure of the crusher shell of a polystyrene plastic crushing and recycling device proposed in this invention; Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 for Figure 3 Enlarged structural diagram at point B; Figure 6 This is a schematic diagram of the protective cover structure of a polystyrene plastic crushing and recycling device proposed in this invention; Figure 7 This is a schematic diagram of the exploded structure of the discharge hopper and guide hopper of a polystyrene plastic crushing and recycling device proposed in this invention; Figure 8 This is an exploded view of the discharge hopper and transmission disc of a polystyrene plastic crushing and recycling device proposed in this invention.

[0018] In the diagram: 11. Crusher housing; 12. Crushing chamber; 13. Crushing roller; 14. Drive motor; 21. Push seat; 22. Guide groove; 23. Guide block; 24. Push plate; 25. Spring 1; 31. Guide opening; 32. Guide plate; 33. Reciprocating screw; 34. Drive bevel gear; 35. Driven bevel gear; 41. Slide plate; 42. Fixed plate; 43. Spring telescopic rod; 44. Transmission plate; 45. Pulley plate; 46. Connecting plate; 47. Push rod; 48. Slot; 49. Push plate; 410. Clearance opening; 411. Linkage plate; 412. Container trough; 51. Protective cover; 52. Operating lever; 53. Pressure plate; 54. Spring 2; 61. Discharge hopper; 62. Guide hopper; 63. Support rod; 64. Crushing plate; 65. Spring 3; 66. Top rod; 67. Transmission disc; 68. Protrusion. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] Example 1 This embodiment discloses a polystyrene plastic crushing and recycling device, referring to... Figure 1-8 The pulverizer includes a pulverizer housing 11 and a pulverizing chamber 12 formed on the top surface of the pulverizer housing 11. A pulverizing roller 13 is rotatably mounted on one side of the inner wall of the pulverizing chamber 12. A drive motor 14 for driving the pulverizing roller 13 is fixedly mounted on the side of the pulverizer housing 11. A pusher seat 21 is slidably mounted on the inner wall of the pulverizing chamber 12. A pusher plate 24 is provided at the end of the pusher seat 21. An installation structure is provided between the pusher seat 21 and the pusher plate 24. A drive assembly corresponding to the pusher seat 21 is provided on the side of the pulverizer housing 11. A slide plate 41 is slidably mounted on the side of the pulverizer housing 11. A fixing plate 42 corresponding to the slide plate 41 is fixedly mounted on the side of the pulverizer housing 11. A spring telescopic rod 43 is fixedly mounted between the fixing plate 42 and the end of the slide plate 41. A reciprocating assembly corresponding to the pusher plate 24 is provided on the top surface of the slide plate 41. A discharge hopper 61 is fixedly mounted on the outside of the discharge port of the pulverizer housing 11. A grinding assembly is provided on the inside of the discharge hopper 61.

[0021] Specifically, the installation structure includes a guide groove 22 opened at the end of the push seat 21, a guide block 23 is slidably installed on the inner wall of the guide groove 22, and the push plate 24 is fixedly connected to the guide block 23. Two springs 25 are symmetrically fixedly installed between the side of the guide block 23 and the inner wall of the guide groove 22.

[0022] Reference Figure 3 and Figure 4 As shown, the drive assembly includes a guide port 31 opened on the side of the crusher housing 11 and communicating with the crushing chamber 12. A guide plate 32 is fixedly installed on the side of the push seat 21. The guide plate 32 is L-shaped and its side is in contact with the inner wall of the guide port 31. A reciprocating screw 33 is rotatably installed on the side of the crusher housing 11 via a bracket. The guide plate 32 passes through the guide port 31 and its end is threaded onto the outer wall of the reciprocating screw 33. A drive bevel gear 34 that is linked with the crushing roller 13 is rotatably installed on the side of the crusher housing 11. A driven bevel gear 35 that meshes with the drive bevel gear 34 is fixedly installed at the end of the reciprocating screw 33.

[0023] The implementation principle of this embodiment is as follows: During use, the operator can add polystyrene plastic into the crushing chamber 12 through the feeding device and turn on the drive motor 14. When the drive motor 14 is turned on, it can drive the crushing roller 13 to rotate. When the crushing roller 13 rotates, it can drive the drive bevel gear 34 to rotate. The drive bevel gear 34 meshes with the driven bevel gear 35, which in turn drives the driven bevel gear 35 and the reciprocating screw 33 to rotate. The guide plate 32 is threadedly fitted on the reciprocating screw 33, and the guide plate 32 is slidably connected to the inner wall of the guide port 31. Therefore, when the reciprocating screw 33 rotates, it can drive the guide plate 32 and the push seat 21 to slide towards the crushing roller 13. The polystyrene plastic can be pushed by the pusher plate 24, so that when the polystyrene plastic comes into contact with the crushing roller 13, the plastic is shredded and crushed under the action of the rotation of the crushing roller 13. At the same time, with the cooperation of the spring telescopic rod 43 and the reciprocating component, the slide plate 41 can slide back and forth and push the pusher plate 24 back and forth, so that the polystyrene plastic raw material can be continuously pushed back and forth, so that the crushing roller 13 can fully crush the plastic. After the initial crushing is completed, the plastic can enter the discharge hopper 61 and be further finely crushed by the grinding component, ensuring that the particle size of the crushed plastic can fully meet the standard.

[0024] Example 2 Based on Example 1, this example discloses a polystyrene plastic crushing and recycling device, such as... Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, the reciprocating assembly includes a connecting plate 46 fixedly mounted on the side of the pusher plate 24. The end of the connecting plate 46 passes through the guide opening 31 and a push rod 47 is fixedly mounted on its bottom surface. The top surface of the slide plate 41 has several slots 48 arranged in a linear array. The inner wall of the slots 48 is rotatably mounted with push plates 49 via a rotating shaft and a torsion spring. The side of the push plates 49 has clearance openings 410 corresponding to the push rod 47. Linkage plates 411 are rotatably mounted on the sides of several push plates 49. The top surface of the slide plate 41... A receiving groove 412 corresponding to the linkage plate 411 and communicating with the slot 48 is provided. A transmission plate 44 is fixedly installed on the bottom surface of the slide plate 41. Several paddle plates 45 distributed in a ring array and corresponding to the transmission plate 44 are fixedly installed on the outer wall of the drive bevel gear 34. A protective cover 51 located outside the drive bevel gear 34, the reciprocating screw 33, and the guide port 31 is fixedly installed on the side of the crusher housing 11. A reset structure corresponding to a push plate 49 at the end is provided on the top surface of the protective cover 51.

[0025] Specifically, the reset structure includes an operating rod 52 that runs through the top surface of the protective cover 51. A pressure plate 53 is fixedly installed at the bottom end of the operating rod 52. A second spring 54 is fitted on the outer wall of the operating rod 52, and the two ends of the second spring 54 are fixedly connected to the operating rod 52 and the protective cover 51, respectively.

[0026] The implementation principle of this embodiment is as follows: When the crushing roller 13 drives the drive bevel gear 34 to rotate, several deflector plates 45 on the outer wall of the drive bevel gear 34 can rotate synchronously. When the deflector plates 45 contact the transmission plate 44 on the bottom surface of the slide plate 41, they can drive the slide plate 41 to slide and compress the spring telescopic rod 43. As the transmission plate 44 moves, when it separates from the deflector plates 45, the spring telescopic rod 43 can extend and return to its original position, thereby realizing the reciprocating sliding of the slide plate 41. During the reciprocating sliding of the slide plate 41, the push plate 49 can initially be in a vertical state under the action of the torsion spring. Then, when the slide plate 41 reciprocates, it can push the push rod 47, the connecting plate 46, and the pusher plate 24. When the slide plate 41 returns to its original position, the guide block 23 and the pusher plate 24 can slide in the opposite direction along the guide groove 22 under the action of the spring 25. And because the rotation push seat 21 of the reciprocating screw 33 is always in When the pusher seat 21 moves, the connecting plate 46 and push rod 47 on its side push plate 49, causing the push plate 49 to rotate into the slot 48, so that the connecting plate 46 and push rod 47 can pass through the push plate 49. Through the above steps, the push plate 24 is reciprocated when the pusher seat 21 moves continuously, so that the polystyrene plastic can be reciprocated and fed, avoiding jamming and other phenomena. After the plastic in the crushing chamber 12 is crushed, the operator can press the operating rod 52. When the operating rod 52 moves downward, it can press one of the push plates 49 at the end through the pressure plate 53, so that the push plate 49 rotates into the slot 48. Several push plates 49 can be rotated synchronously through the linkage plate 411 to make way for the reset of the pusher seat 21. After the pusher seat 21 is reset, new polystyrene plastic can be added for initial crushing.

[0027] Example 3 Based on Example 1, this example discloses a polystyrene plastic crushing and recycling device, such as... Figure 2 , Figure 7 and Figure 8 As shown, the grinding assembly includes a guide hopper 62 fixedly installed on the inner wall of the discharge hopper 61. Two support rods 63 are symmetrically arranged through one end of the discharge hopper 61. A crushing plate 64 is fixedly installed on the inner end of the support rod 63. The teeth on the two crushing plates 64 are staggered. A spring 65 is fitted on the outer wall of the support rod 63. The two ends of the spring 65 are fixedly connected to the support rod 63 and the discharge hopper 61, respectively. A top rod 66 is fixedly installed on the end of the crushing plate 64 away from the support rod 63. The end of the top rod 66 passes through the side of the discharge hopper 61. A transmission disk 67 is rotatably installed on the side of the discharge hopper 61. The transmission disk 67 is connected to the drive bevel gear 34 through a driven wheel and a synchronous belt. Several protrusions 68 arranged in a ring array and corresponding to the top rod 66 are fixedly installed on the side of the transmission disk 67.

[0028] The implementation principle of this embodiment is as follows: After the polystyrene plastic is initially crushed by the crushing roller 13, it can fall through the discharge port into the guide hopper 62 in the discharge hopper 61. The guide hopper 62 will concentrate the plastic between the opposite sides of the two crushing plates 64. Under the action of gravity, the plastic will fall between the two crushing plates 64. As the drive bevel gear 34 runs, the drive disc 67 will be driven to rotate through the driven wheel and the synchronous belt. When the drive disc 67 rotates, it can push the top rod 66 through the protrusion 68 on its side. When the protrusion 68 separates from the end of the top rod 66, the crushing plate 64 can be reset under the action of the spring 65. This realizes the driving of the relative movement of the two crushing plates 64, so that the initially crushed plastic can be finely ground and crushed again between the two crushing plates 64, ensuring the particle size of the crushed polystyrene plastic for reuse.

[0029] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A polystyrene plastic crushing and recycling device, comprising a crusher housing (11) and a crushing chamber (12) formed on the top surface of the crusher housing (11), wherein a crushing roller (13) is rotatably mounted on one side of the inner wall of the crushing chamber (12), and a drive motor (14) for driving the crushing roller (13) is fixedly mounted on the side of the crusher housing (11), characterized in that, A pusher seat (21) is slidably installed on the inner wall of the crushing chamber (12). A pusher plate (24) is provided at the end of the pusher seat (21). An installation structure is provided between the pusher seat (21) and the pusher plate (24). A drive assembly corresponding to the pusher seat (21) is provided on the side of the crusher housing (11). A slide plate (41) is slidably installed on the side of the crusher housing (11). A fixing plate (42) corresponding to the slide plate (41) is fixedly installed on the side of the crusher housing (11). A spring telescopic rod (43) is fixedly installed between the fixing plate (42) and the end of the slide plate (41). A reciprocating assembly corresponding to the pusher plate (24) is provided on the top surface of the slide plate (41). A discharge hopper (61) is fixedly installed on the outside of the discharge port of the crusher housing (11). A grinding assembly is provided on the inside of the discharge hopper (61).

2. The polystyrene plastic crushing and recycling device according to claim 1, characterized in that, The installation structure includes a guide groove (22) opened at the end of the push seat (21), a guide block (23) is slidably installed on the inner wall of the guide groove (22), and the push plate (24) is fixedly connected to the guide block (23). Two springs (25) are symmetrically fixedly installed between the side of the guide block (23) and the inner wall of the guide groove (22).

3. The polystyrene plastic crushing and recycling device according to claim 1, characterized in that, The drive assembly includes a guide port (31) opened on the side of the crusher housing (11) and communicating with the crushing chamber (12). A guide plate (32) is fixedly installed on the side of the push seat (21). A reciprocating screw (33) is rotatably installed on the side of the crusher housing (11) via a bracket. The guide plate (32) passes through the guide port (31) and its end is threaded onto the outer wall of the reciprocating screw (33). A drive bevel gear (34) that is linked with the crushing roller (13) is rotatably installed on the side of the crusher housing (11). A driven bevel gear (35) that meshes with the drive bevel gear (34) is fixedly installed at the end of the reciprocating screw (33).

4. The polystyrene plastic crushing and recycling device according to claim 3, characterized in that, The guide plate (32) is L-shaped, and the side of the guide plate (32) is in contact with the inner wall of the guide opening (31).

5. A polystyrene plastic crushing and recycling device according to claim 3, characterized in that, The reciprocating assembly includes a connecting plate (46) fixedly installed on the side of the pusher plate (24). The end of the connecting plate (46) passes through the guide port (31) and a push rod (47) is fixedly installed on the bottom surface. The top surface of the slide plate (41) is provided with a number of slots (48) arranged in a linear array. The inner wall of the slot (48) is rotatably installed with a push plate (49) through a rotating shaft and a torsion spring. The sides of the push plates (49) are rotatably installed with a linkage plate (411). The top surface of the slide plate (41) is provided with a receiving groove (412) corresponding to the linkage plate (411) and communicating with the slot (48). The side of the crusher housing (11) is fixedly installed with a protective cover (51) located outside the drive bevel gear (34), the reciprocating screw (33), and the guide port (31). The top surface of the protective cover (51) is provided with a reset structure corresponding to one of the push plates (49) at the end.

6. A polystyrene plastic crushing and recycling device according to claim 5, characterized in that, A transmission plate (44) is fixedly installed on the bottom surface of the slide plate (41), and a number of paddles (45) arranged in a ring array and corresponding to the transmission plate (44) are fixedly installed on the outer wall of the drive bevel gear (34).

7. A polystyrene plastic crushing and recycling device according to claim 5, characterized in that, The side of the push plate (49) is provided with a clearance opening (410) corresponding to the push rod (47).

8. A polystyrene plastic crushing and recycling device according to claim 5, characterized in that, The reset structure includes an operating rod (52) that passes through the top surface of the protective cover (51). A pressure plate (53) is fixedly installed at the bottom end of the operating rod (52). A second spring (54) is fitted on the outer wall of the operating rod (52), and the two ends of the second spring (54) are fixedly connected to the operating rod (52) and the protective cover (51) respectively.

9. A polystyrene plastic crushing and recycling device according to claim 3, characterized in that, The grinding assembly includes a guide hopper (62) fixedly installed on the inner wall of the discharge hopper (61). Two support rods (63) are symmetrically arranged through one end of the discharge hopper (61). A crushing plate (64) is fixedly installed on the inner end of the support rod (63). A spring three (65) is fitted on the outer wall of the support rod (63). The two ends of the spring three (65) are fixedly connected to the support rod (63) and the discharge hopper (61) respectively. A top rod (66) is fixedly installed on the end of the crushing plate (64) away from the support rod (63). The end of the top rod (66) passes through the side of the discharge hopper (61). A transmission disk (67) is rotatably installed on the side of the discharge hopper (61). The transmission disk (67) is connected to the drive bevel gear (34) through a driven wheel and a synchronous belt. Several protrusions (68) arranged in a ring array and corresponding to the top rod (66) are fixedly installed on the side of the transmission disk (67).

10. A polystyrene plastic crushing and recycling device according to claim 9, characterized in that, The teeth on the two crushing plates (64) are staggered.

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