Plastic sheet solid waste recycling device

Abstract

The invention relates to the technical field of plastic recycling, in particular to a plastic sheet solid waste recycling device which comprises a rack, a treatment frame and a melting furnace are fixedly mounted on the rack, a power transmission assembly is arranged in the treatment frame, and the power transmission assembly comprises a driving shaft rotationally connected to the inner wall of the treatment frame; a crushing mechanism is arranged on the outer wall of the driving shaft and comprises three groups of crushing wheels arranged in the axial direction of the driving shaft, and each crushing wheel is composed of three partition plates, six second extrusion plates and a plurality of large-head nuts. Abrasion parts can be independently replaced without disassembling the whole crushing wheel, the high cost of overall replacement of the crushing wheel is avoided, the shutdown maintenance time is greatly shortened, a partition plate is of a regular hexagon structure, a second extrusion plate is installed at the end corner, where stress is most concentrated, of the partition plate, and equivalently, weak points in the crushing process are reinforced and supported, and the crushing efficiency is improved. The impact and shearing force of hard plastics and thick sheets can be resisted, and the partition plate is prevented from deforming and breaking.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plastic recycling, and particularly relates to a recycling device for plastic sheet solid waste. BACKGROUND

[0002] With the rapid development of the plastic industry, the production and consumption of plastic sheet materials (such as PP / PE sheet materials for packaging and PVC sheet materials for building materials) continue to rise, and the scale of plastic sheet solid waste (such as production waste and scrap products) also expands year by year. If such solid waste is not properly treated, it will not only occupy a large amount of land resources, cause soil and water pollution, but also waste plastic, a recyclable resource. At present, the mainstream recycling process of plastic sheet solid waste usually includes three major links of "crushing pretreatment-melting regeneration-shaping processing".

[0003] At present, the crushing wheels of the existing crushing device are usually integrally cast, and the extrusion crushing parts and the wheel body are designed to be inseparable. Since the plastic sheet will continuously impact and shear the extrusion parts during the crushing process, when the parts are worn to a certain extent, the entire crushing wheel needs to be disassembled and replaced, which not only increases the cost of the equipment, but also requires the entire device to be disassembled and assembled, affecting the continuity of the recycling operation. In addition, when hard plastic or thick sheet is processed, the instantaneous impact force generated during the extrusion process is easy to cause the crushing assembly to deform and break, further increasing the maintenance cost and downtime risk, thereby reducing the practicability of the device. SUMMARY

[0004] The present application aims to solve the problem of poor practicability of the recycling device in the prior art, and provides a recycling device for plastic sheet solid waste.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: a recycling device for plastic sheet solid waste, comprising a rack, a treatment frame and a melting furnace are fixedly installed on the rack, characterized in that a power transmission assembly is arranged inside the treatment frame, the power transmission assembly comprises a drive shaft rotatably connected to the inner wall of the treatment frame, an extrusion crushing mechanism is arranged on the outer wall of the drive shaft, the extrusion crushing mechanism comprises three groups of crushing wheels arranged along the axial direction of the drive shaft, and the angles of the three groups of crushing wheels are offset, the crushing wheel is composed of three partition plates, six second extrusion plates and a plurality of large nuts, the partition plate is a regular hexagonal structure, the three partition plates are spaced apart along the axial direction of the drive shaft and are fixedly connected with the drive shaft, and a through insertion slot is formed in each of the six corner angles of each partition plate, a group of installation channels are formed by the insertion slots corresponding in position on the three partition plates, each second extrusion plate is inserted into a group of installation channels in a transverse direction, and is fixed with the partition plate through a large nut, and the large nut is located in the interval between the three partition plates.

[0006] Preferably, a motor is fixedly mounted on the frame, and the output end of the motor is connected to one end of the drive shaft via a transmission device.

[0007] Preferably, the processing frame has a feed inlet at the top, the processing frame is located above the melting furnace, the discharge port of the processing frame is connected to the feed inlet of the melting furnace, and an exhaust device is fixedly installed on the outer wall of the processing frame.

[0008] Preferably, the crushing wheels at both ends of the drive shaft are at the same angle, and the crushing wheel in the middle position is circumferentially deflected by 30 degrees relative to the crushing wheels at both ends.

[0009] Preferably, a filter assembly is provided inside the processing frame. The filter assembly includes a filter screen that is fixedly installed inside the processing frame via an arc-shaped side plate. The arc of the filter screen is 120 degrees. A baffle is fixedly installed on the inner wall of the processing frame. The baffle and the filter screen are combined to form an arc-shaped enclosure structure.

[0010] Preferably, the crushing mechanism is provided with three sets of jet components on its periphery, one set of jet components is located at the lower left of the crushing mechanism, and the other two sets of jet components are symmetrically distributed at the upper left and upper right of the crushing mechanism.

[0011] Preferably, the jet assembly includes a first extrusion plate, which is fixedly mounted on the inner wall of the processing frame by a fixing plate. The first extrusion plate has multiple through holes and is fixedly connected to an jet pipe.

[0012] Preferably, an air suction pump is fixedly installed on the outer wall of the melting furnace, a filter is provided on the frame, the air suction pump is connected to the filter through an air outlet pipe, and the exhaust end of the filter is connected to three air guide pipes through a three-way connector. The three air guide pipes are respectively connected to the air jet pipes of three sets of air jet components.

[0013] Preferably, the outer wall of the melting furnace is fixedly connected to a discharge pipe, the bottom of the inner wall of the melting furnace is fixedly installed with a power device, the top output end of the power device is fixedly connected to a connecting shaft, and the outer wall of the connecting shaft is arranged in a ring array with multiple sets of stirring components.

[0014] Preferably, the stirring assembly includes two fixed rods fixedly installed on the side wall of the connecting shaft, and the two fixed rods are arranged vertically and parallelly. A vibrating blade and two electric heating stirring rods are fixedly connected between the two fixed rods, and the two electric heating stirring rods are symmetrically arranged on both sides of the vibrating blade.

[0015] Compared with the prior art, the advantages of the present invention are as follows: In this invention, the second extrusion plate adopts a modular structure that is inserted and fixed to the big-end nut. Wear parts can be replaced individually without disassembling the entire crushing wheel, which avoids the high cost of replacing the entire crushing wheel and significantly shortens downtime for maintenance. In addition, the protruding part of the big-end nut can also assist in collision and scraping of tough plastics, accelerating their fracture. The partition plate adopts a geometrically stable regular hexagonal structure. The second extrusion plate is installed at the end corner of the partition plate where the stress is most concentrated, which is equivalent to strengthening the weak point in the crushing process. It can resist the impact and shear force of hard plastics and thick sheets, avoid the partition plate from deforming and breaking, and significantly extend the overall service life of the crushing mechanism.

[0016] In this invention, the three sets of crushing wheels are designed with both ends aligned and the middle deflected by 30 degrees. This ensures that when the drive shaft rotates, at least one set of second extrusion plates is working at any angle in the circumferential direction, completely eliminating crushing blind spots. No matter the position of the plastic in the processing frame, it can be captured in time. At the same time, the extrusion plates at different positions form an "interlaced tearing-extrusion" combination, applying continuous shearing force to the plastic at multiple angles. This can not only quickly crush large pieces of material, but also refine the initially crushed fragments, ultimately obtaining a uniform crushed particle size, providing a stable raw material for subsequent melting.

[0017] This invention combines an air jet assembly with an arc-shaped filter structure. The upper left air jet assembly guides and forces the plastic to enter the crushing path clockwise along the crushing wheel, avoiding ineffective energy consumption caused by material dispersion and improving the initial crushing concentration. The upper right air jet assembly and the rotating second extrusion plate form an initial extrusion and pull, guiding the initially crushed material into the space between the filter screen and the extrusion plate, providing a channel for secondary refinement. The lower left air jet assembly intercepts substandard coarse particles, forcing them to continue crushing between the filter screen and the crushing mechanism until the particle size meets the requirements and then passes through the filter screen. This fundamentally prevents unqualified materials from leaving prematurely, ensuring that all output materials have a uniform particle size and meet the raw material standards for subsequent melting.

[0018] In this invention, the electric heating stirring rod provides an additional heat source for plastic melting during rotation, preventing slow melting caused by excessively low local temperatures in the melting furnace. Simultaneously, the rotation ensures thorough mixing of materials within the furnace, preventing localized overheating and carbonization, and guaranteeing a stable melting process. The vibrating blade, located between the two electric heating stirring rods, can cut incompletely melted plastic blocks and tear solid fragments through high-frequency vibration, allowing the material to come into full contact with the heat source and significantly shortening the melting time. Furthermore, the vibration action further enhances the stirring effect. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a plastic sheet solid waste recycling device proposed in this invention.

[0020] Figure 2This is a schematic diagram of the transmission device and drive shaft structure of a plastic sheet solid waste recycling device proposed in this invention.

[0021] Figure 3 This is a schematic diagram of the feeding frame and exhaust device of a plastic sheet solid waste recycling device proposed in this invention.

[0022] Figure 4 This is a schematic diagram of the connecting shaft and fixing rod structure of a plastic sheet solid waste recycling device proposed in this invention.

[0023] Figure 5 This is a schematic diagram of the jet pipe and the first extrusion plate structure of a plastic sheet solid waste recycling device proposed in this invention.

[0024] Figure 6 This is a schematic diagram of the second extrusion plate and the large-head nut structure of a plastic sheet solid waste recycling device proposed in this invention.

[0025] Figure 7 This is a schematic diagram of the arc-shaped side plate and partition plate structure of a plastic sheet solid waste recycling device proposed in this invention.

[0026] In the diagram: 1. Frame, 2. Feed inlet, 3. Exhaust device, 4. Air outlet pipe, 5. Filter, 6. T-joint, 7. Air guide pipe, 8. Suction pump, 9. Processing frame, 10. Motor, 11. Transmission device, 12. Drive shaft, 13. Melting furnace, 14. Power unit, 15. Discharge pipe, 16. Connecting shaft, 17. Fixing rod, 18. Electric heating stirring rod, 19. Vibrating blade, 20. Arc side plate, 21. Filter screen, 22. Fixing plate, 23. Jet pipe, 24. First extrusion plate, 25. Baffle, 26. Second extrusion plate, 27. Separator plate, 28. Big head nut. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] Reference Figures 1 to 7A recycling device for solid waste plastic sheets includes a frame 1, on which a processing frame 9 and a melting furnace 13 are fixedly installed. The processing frame 9 is located above the melting furnace 13, and its outlet is connected to the inlet of the melting furnace 13, allowing pre-treated plastic to fall into the melting furnace 13 for melting. An inlet 2 is provided at the top of the processing frame 9, through which waste plastic is fed into the processing frame 9 for pre-treatment. A power transmission assembly is provided inside the processing frame 9, including a drive shaft 12 rotatably connected to the inner wall of the processing frame 9. A motor 10 is fixedly installed on the frame 1, and the output end of the motor 10 is connected to one end of the drive shaft 12 via a transmission device 11 (existing technology, not described further here), transmitting power from the motor 10 to the drive shaft 12. The drive shaft 12 can rotate under the drive of the motor 10, and a crushing mechanism is provided on the outer wall of the drive shaft 12.

[0029] The crushing mechanism includes three sets of identical crushing wheels arranged axially along the drive shaft 12. Each crushing wheel consists of three partition plates 27, six second extrusion plates 26, and several large-end nuts 28. The partition plates 27 are hexagonal in shape, and the three partition plates 27 are spaced apart along the drive shaft 12 and fixedly connected to it. Each partition plate 27 has a through-hole insertion slot at each of its six corners. The corresponding insertion slots on the three partition plates 27, i.e., the three slots collinear along the drive shaft 12, form a set of installation channels. The second extrusion plates 26 are elongated, and each second extrusion plate 26 is inserted laterally into a set of installation channels and fixed to the partition plates 27 by the large-end nuts 28. The large-end nuts 28 are located in the intervals between the three partition plates 27. The second extrusion plates 26 are modularly inserted and fixed to the partition plates 27 by the large-end nuts 28, allowing for individual replacement of worn second extrusion plates without disassembling the entire crushing wheel. The extrusion plate 26 significantly simplifies the maintenance process, reduces downtime for repairs, and lowers replacement costs. It eliminates the need to replace the entire crushing wheel and allows for the replacement of second extrusion plates 26 with varying thicknesses and hardnesses to suit different types of plastics (e.g., hard and brittle, tough and tough). The hexagonal partition plate 27 possesses inherent geometric stability, while the second extrusion plate 26 is precisely installed at its corners—the points of highest stress concentration—effectively reinforcing weak points and resisting impacts and shear forces during crushing. This prevents deformation or breakage of the partition plate 27. This design, reinforcing key stress points, allows the crushing mechanism to adapt to high-strength crushing requirements for hard plastics and thick sheets, extending its overall service life. Furthermore, the large-head nut 28 not only reinforces the structure but its protruding portion also assists in crushing through collision and scraping, especially for tough plastic sheets, accelerating the fracture process and ultimately achieving a more uniform crushed particle size.

[0030] The three sets of crushing wheels have different angle settings. The two sets of crushing wheels at both ends of the drive shaft 12 have the same angle, that is, the second extrusion plates 26 of the two sets of crushing wheels are aligned circumferentially. The crushing wheel located in the middle of the drive shaft 12 is rotated 30 degrees relative to the crushing wheels at both ends. That is, the second extrusion plate 26 of the middle crushing wheel is located in the middle of the six sides of the partition plate 27 of the crushing wheels at both ends. This layout ensures that at any angle of rotation of the drive shaft 12, there is always at least one set of second extrusion plates 26 in the working position in the circumferential direction, eliminating the crushing blind zone. No matter what position the plastic is in the processing frame 9, it can be captured and crushed in time. At the same time, it can form an interlaced "tear-extrusion" combination: when rotating, the components at different positions form multi-angle and continuous shearing forces on the plastic, which can not only quickly crush large pieces of plastic, but also further refine the initially crushed material.

[0031] The processing frame 9 is equipped with a filter assembly, which includes a filter screen 21 fixedly installed inside the processing frame 9 via an arc-shaped side plate 20. The arc of the filter screen 21 is 120 degrees. A baffle 25 is fixedly installed on the inner wall of the processing frame 9. The baffle 25 and the filter screen 21 combine to form an arc-shaped enclosure structure. Three sets of air jet components are arranged around the crushing mechanism. One set of air jet components is located at the lower left of the crushing mechanism, that is, between the baffle 25 and the filter screen 21. The other two sets of air jet components are symmetrically arranged at the upper left and upper right of the crushing mechanism (e.g., ...). Figure 7 As shown), the jet assembly includes a first extrusion plate 24, which is fixedly installed on the inner wall of the processing frame 9 by a fixing plate 22. The first extrusion plate 24 is fixedly connected to a jet pipe 23, and multiple through holes are provided on the first extrusion plate 24 for ejecting the gas in the jet pipe 23. The first extrusion plate 24, located at the upper left of the crushing mechanism, guides and forces feeding, preventing the plastic from dispersing in the initial crushing stage. This ensures that all material enters the crushing path in a concentrated manner along the clockwise rotation of the crushing wheel, reducing ineffective energy consumption and making the initial crushing more concentrated and efficient. The first extrusion plate 24, located at the upper right of the crushing mechanism, and the rotating second extrusion plate 26 form an initial extrusion and pulling action, allowing the initially crushed plastic to enter between the filter screen 21 and the second extrusion plate 26 for further crushing. The clockwise rotating crushing wheel drives the plastic to the lower left of the first extrusion plate 24, where the first extrusion plate 24 intercepts any substandard plastic, forcing it to be continuously pulled and crushed between the filter screen 21 and the crushing mechanism until the particle size meets the requirements and is discharged through the filter screen 21. This fundamentally prevents unqualified material from leaving the crushing area prematurely, ensuring that the final output material has a consistent particle size and meets the standards for subsequent processing. The arc-shaped enclosure structure formed by the arc baffle 25 and the filter screen 21 effectively prevents material waste due to leaving the crushing path, significantly improving the utilization rate of crushed plastic.

[0032] A power unit 14 is fixedly installed at the bottom of the inner wall of the melting furnace 13. A connecting shaft 16 is fixedly connected to the top output end of the power unit 14. Multiple stirring components are arranged in a ring array on the outer wall of the connecting shaft 16. The stirring components include two fixed rods 17 fixedly installed on the side wall of the connecting shaft 16, and the two fixed rods 17 are arranged vertically and parallelly. A vibrating blade 19 and two electric heating stirring rods 18 are fixedly connected between the two fixed rods 17. The two electric heating stirring rods 18 are symmetrically arranged on both sides of the vibrating blade 19. When the power unit 14 is started, the connecting shaft 16 will drive the multiple stirring components to rotate synchronously. A discharge pipe 15 is fixedly connected to the outer wall of the melting furnace 13. During rotation, the electric heating stirring rod 18 can help increase the local temperature inside the melting furnace 13, providing an auxiliary heat source for the plastic melting reaction and ensuring melting efficiency. It can also achieve uniform stirring of materials inside the furnace through rotation, avoiding local temperature imbalance. The vibrating blade 19 can efficiently cut the incompletely melted plastic blocks inside the furnace and further enhance the stirring effect in conjunction with the rotation, directly accelerating the overall melting rate of the plastic. At the same time, the high-frequency vibration and impact of the vibrating blade 19 can be specifically applied to the solid plastic fragments falling between the two electric heating stirring rods 18. This area is the core area with the highest temperature and the most concentrated heat flow inside the furnace. By pre-crushing and tearing the solid fragments, the material can be more fully exposed to the heat source, greatly improving the melting efficiency. The heat radiation generated during the melting process is directly conducted into the processing frame 9. Appropriately increasing the temperature inside the processing frame 9 helps address the issue that plastics at room temperature typically possess both high hardness and toughness, requiring significant force to break. This not only increases energy consumption but also exacerbates wear on the extrusion plates. However, after appropriate heating, the mobility of the molecular chain segments is significantly enhanced, and both hardness and strength decrease substantially. This reduces the force required to extrude and shear the plastic. Simultaneously, the increased ductility of the heated plastic transforms the breaking process from a rigid "brittle fracture" to a more pronounced "plastic deformation" and "ductile tearing," resulting in more uniform and regularly shaped fragments with a significantly reduced dust content, which is more conducive to subsequent melting processing. A suction pump 8 is fixedly installed on the outer wall of the melting furnace 13, and a filter 5 is installed on the frame 1. The suction pump 8 is connected to the filter 5 through the exhaust pipe 4, which can draw the gas generated during the melting process into the filter 5. The filter 5 can treat the harmful components in the gas. Its exhaust end is connected to three air guide pipes 7 through a three-way connector 6. The three air guide pipes 7 are respectively connected to the air jet pipes 23 of the three sets of air jet components, so that the treated gas is introduced into the first extrusion plate 24 through the air guide pipes 7 and the air jet pipes 23, and is ejected from the through hole of the first extrusion plate 24, forming a hot airflow that blows the plastic being crushed. The outer wall of the processing frame 9 is also equipped with an exhaust device 3. The gas remaining after secondary use is finally discharged through the exhaust device 3 and enters professional processing equipment for deep treatment to meet the emission standards. The gas generated by the melting furnace 13 is treated and reused in the crushing process. On the one hand, the hot airflow is used to preheat the plastic, reduce its toughness, and facilitate the crushing mechanism to cut and tear more efficiently, indirectly improving the crushing efficiency. On the other hand, there is no need to introduce an external gas source, saving energy consumption. Meanwhile, the airflow circulation can remove the dust generated during the crushing process, and together with the exhaust device 3, it can reduce dust overflow and improve the working environment of the equipment.

[0033] In use, waste plastic is poured into the processing frame 9 through the feed inlet 2. The motor 10 is started, and the drive shaft 12 and three crushing wheels are rotated through the transmission device 11. The partition plate 27 mainly serves to support, divide the space, and form the shearing edge. The second extrusion plate 26 is arranged at each vertex of the partition plate 27 (the outermost position with the highest linear velocity), adding a robust extrusion unit and greatly strengthening these weak vertices, preventing the partition plate 27 from deforming or breaking under heavy load. The second extrusion plates 26 in the three crushing wheels are stacked. In any angle direction of the rotation circumference, there is at least one set (usually two sets or alternating overlap) of high-strength second extrusion plates 26 in the working position, realizing the circumferential uniform distribution of shearing force. The six sides of the partition plate 27 of the middle crushing wheel correspond to the six end corners of the partition plates 27 of the front and rear crushing wheels, which helps to strongly tear and squeeze the plastic, forming a stable and continuous shearing effect and improving the crushing efficiency.

[0034] The crushing wheel rotates clockwise. The first extrusion plate 24 has a through hole that sprays air from the jet pipe 23. The first extrusion plate 24 on the upper left of the crushing mechanism can guide and force feeding. When the crushing wheel rotates clockwise, it ensures that all the plastics are rotated clockwise to the right and are pulled and crushed. The first extrusion plate 24 on the upper right of the crushing mechanism cooperates with the rotating second extrusion plate 26 to perform initial extrusion, pulling and crushing of the plastics. The plastics after initial crushing enter the filter screen 21 and the second extrusion plate 26 for further crushing. The first extrusion plate 24 on the lower left of the crushing mechanism blocks the plastics that have not reached the degree of crushing and performs the final crushing. This allows the plastics to be continuously pulled and crushed, and finally fall from the filter screen 21 into the melting furnace 13.

[0035] The power unit 14 inside the melting furnace 13 is activated, and the connecting shaft 16 drives the fixed rod 17, the electric heating stirring rod 18, and the vibrating blade 19 to rotate. The electric heating stirring rod 18 increases the temperature inside the melting furnace 13, melting the plastic while also stirring it. The vibrating blade 19 between the two electric heating stirring rods 18 further cuts the unmelted plastic, while also providing some stirring, accelerating the melting speed. After melting, the material is discharged from the discharge pipe 15. The heat radiation generated during the melting process is directly conducted to the processing frame 9 above, appropriately increasing the temperature inside the processing frame 9, softening the plastic, and improving the crushing effect. The gas generated during the melting process is drawn into the filter 5 by the suction pump 8 for treatment, removing harmful components from the gas. The treated gas is then introduced into three sets of jet components through the three-way connector 6 and three air guide pipes 7, and finally ejected from the through hole of the first extrusion plate 24, blowing the hot airflow onto the plastic being crushed. The reused gas is finally discharged from the exhaust device 3 and enters a more specialized processing device for further treatment to meet compliant emission standards. 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 recycling device for solid waste plastic sheets, comprising a frame (1), wherein a processing frame (9) and a melting furnace (13) are fixedly installed on the frame (1), characterized in that, The processing frame (9) is equipped with a power transmission assembly, which includes a drive shaft (12) rotatably connected to the inner wall of the processing frame (9). The outer wall of the drive shaft (12) is provided with a crushing mechanism, which includes three sets of crushing wheels arranged axially along the drive shaft (12). The angles of the three sets of crushing wheels are offset. The crushing wheel is composed of three partition plates (27), six second extrusion plates (26), and several large-head nuts (28). The partition plates (27) are regular hexagonal structures. Plates (27) are spaced apart along the axial direction of the drive shaft (12) and are fixedly connected to the drive shaft (12). Each partition plate (27) has a through-hole insertion slot at each of its six corners. The insertion slots on the three partition plates (27) form a set of installation channels. The second extrusion plate (26) is a long strip structure. Each second extrusion plate (26) is inserted laterally into a set of installation channels and fixed to the partition plate (27) by a big-head nut (28). The big-head nut (28) is located in the interval between the three partition plates (27).

2. The plastic sheet solid waste recycling device according to claim 1, characterized in that, A motor (10) is fixedly installed on the frame (1), and the output end of the motor (10) is connected to one end of the drive shaft (12) through a transmission device (11).

3. The recycling device for solid waste plastic sheets according to claim 1, characterized in that, The processing frame (9) has an inlet (2) at the top. The processing frame (9) is located above the melting furnace 13. The outlet of the processing frame (9) is connected to the inlet of the melting furnace 13. An exhaust device (3) is fixedly installed on the outer wall of the processing frame (9).

4. The recycling device for solid waste plastic sheets according to claim 1, characterized in that, The crushing wheels at both ends of the drive shaft (12) have the same angle, and the crushing wheel in the middle position is 30 degrees circumferentially deflected relative to the crushing wheels at both ends.

5. The recycling device for solid waste plastic sheets according to claim 1, characterized in that, The processing frame (9) is provided with a filter assembly inside. The filter assembly includes a filter screen (21) fixedly installed in the processing frame (9) by an arc side plate (20). The arc of the filter screen (21) is 120 degrees. A baffle (25) is fixedly installed on the inner wall of the processing frame (9). The baffle (25) and the filter screen (21) are combined to form an arc-shaped surrounding structure.

6. The plastic sheet solid waste recycling device according to claim 5, characterized in that, The crushing mechanism is surrounded by three sets of jet components. One set of jet components is located at the lower left of the crushing mechanism, and the other two sets of jet components are symmetrically distributed at the upper left and upper right of the crushing mechanism.

7. The plastic sheet solid waste recycling device according to claim 6, characterized in that, The jet assembly includes a first extrusion plate (24), which is fixedly installed on the inner wall of the processing frame (9) by a fixing plate (22). The first extrusion plate (24) has multiple through holes and is fixedly connected to an jet pipe (23).

8. The plastic sheet solid waste recycling device according to claim 7, characterized in that, An air pump (8) is fixedly installed on the outer wall of the melting furnace (13). A filter (5) is provided on the frame (1). The air pump (8) is connected to the filter (5) through the air outlet pipe (4). The exhaust end of the filter (5) is connected to three air guide pipes (7) through a three-way connector (6). The three air guide pipes (7) are respectively connected to the air pipes (23) of the three sets of air jet components.

9. The recycling device for solid waste plastic sheets according to claim 1, characterized in that, The outer wall of the melting furnace (13) is fixedly connected to a discharge pipe (15), and a power device (14) is fixedly installed at the bottom of the inner wall of the melting furnace (13). The top output end of the power device (14) is fixedly connected to a connecting shaft (16), and the outer wall of the connecting shaft (16) is arranged in a ring array with multiple sets of stirring components.

10. The recycling device for solid waste plastic sheets according to claim 9, characterized in that, The stirring assembly includes two fixed rods (17) fixedly installed on the side wall of the connecting shaft (16), and the two fixed rods (17) are arranged in parallel vertically. A vibrating blade (19) and two electric heating stirring rods (18) are fixedly connected between the two fixed rods (17), and the two electric heating stirring rods (18) are symmetrically arranged on both sides of the vibrating blade (19).

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