CN118906307A - Waste plastic recycling device - Google Patents

Abstract

The invention discloses a waste plastic recycling device which comprises a processor box, an infrared spectrometer and a plurality of composite balls. The infrared spectrometer performs recyclable distinction on waste plastic entering the processing box. When plastics fall into the grinding machine and carry out preliminary breakage, the spray head sprays water mist to reduce dust and float. The throwing wheel sends a proper amount of composite balls and broken plastics into the cleaning machine together for deep brushing. The cleaned plastic is dried and separated from the throwing wheel, and then enters a crushing bin for full crushing. The throwing wheel adsorbs dust generated by crushing in the process. Under the closed environment, the wind that the air-out board blown out forms the runner in smashing the storehouse, guides the dust to screening case to adsorb at the throwing wheel outer end as much as possible, thereby effectively prevent the secondary pollution in the recovery processing in-process.

Description

Waste plastic recycling and processing device

Technical Field

The present invention relates to the technical field of plastic recycling, and more specifically to a waste plastic recycling and processing device.

Background Art

With the rapid development of industrialization and consumption patterns, the use of plastics has increased dramatically, leading to the accumulation of waste plastics. Plastics not only consume a lot of resources and energy in the production process, but also cause long-term pollution to the environment due to their non-degradable properties. Problems such as marine plastic waste and plastic accumulation in landfills are becoming increasingly serious, posing a threat to the ecosystem and human health.

In order to reduce the impact of waste plastics on the environment and improve the recycling rate of resources, the recycling of waste plastics has become an important environmental issue. By recycling and reprocessing waste plastics, they can be converted into reusable resources, thereby reducing dependence on primary resources and waste generation; waste plastic recycling and processing equipment is used to collect, sort, clean, crush, process and recycle waste plastics. Equipment and facilities.

The current waste plastic recycling technology faces many challenges. The classification and cleaning of waste plastics are complicated and costly. Different types of plastics require different treatment methods, and residual pollutants will affect the recycling effect and the quality of recycled materials. In addition, traditional recycling equipment is often inefficient and cannot cope with a variety of plastic waste. In the field of plastic recycling, different types of plastics have significant differences in recyclability due to factors such as their chemical structure, stability, additives, and degree of contamination. Some plastics are generally considered difficult to recycle or non-recyclable because they are difficult to effectively separate, clean or reprocess. However, in the recycling process, stains on the surface of waste plastics are not only difficult to clean, but also dust is easily splashed during the cleaning process, which pollutes the environment or is inhaled by workers and causes harm. At the same time, in the crushing stage before regeneration in the recycling process, due to the brittleness of plastics, when they are broken by external force, a large amount of dust will also be generated, which is not easy to clean and is easy to cause secondary pollution.

Therefore, in view of the above technical problems, it is necessary to provide a waste plastic recycling and processing device.

Summary of the invention

The purpose of the present invention is to provide a waste plastic recycling and processing device to solve the above-mentioned problems.

In order to achieve the above purpose, the technical solution provided by an embodiment of the present invention is as follows:

A waste plastic recycling and processing device comprises a processing box, an infrared spectrometer and a plurality of composite balls, wherein a conveying channel is arranged in the processing box, a recovery box is arranged at the lower end of the conveying channel, a feed port is arranged at the upper end of the processing box, and the feed port is connected with the conveying channel, a screening cylinder is arranged in the processing box, and the screening cylinder is located at a side of the conveying channel away from the feed port, the screening cylinder is connected with the recovery box, an opening and closing gate is installed at the upper end of the screening cylinder, the infrared spectrometer is fixedly connected to the upper inner wall of the conveying channel, and ... The instrument is electrically connected to the opening and closing switch, a crusher and a cleaning machine are respectively installed in the processing machine box, and the cleaning machine is located at the lower end of the crusher, the crusher and the cleaning machine are both located at the end of the screening cylinder away from the recovery box, a water supply tank is embedded in the upper end of the processing machine box, a spray head is fixedly connected to the lower end of the water supply tank, and the spray head is located above the crusher, a loading box is fixedly connected to the side end of the water supply tank, a plurality of the composite balls are arranged in the loading box, a delivery wheel is rotatably connected between the loading box and the processing machine box, and the delivery wheel is located above the crusher.

As a further improvement of the present invention, a filter box is provided in the processing machine box, and the filter box is located below the cleaning machine, a filter net is fixedly connected to the upper end of the filter box, a screening box is fixedly connected to the end of the filter box away from the screening cylinder, a screening net is fixedly connected to the upper end of the screening box, and the filter net and the screening net are integrally formed.

As a further improvement of the present invention, an isolation net is fixedly connected to the inner end of the screening box, and a plurality of evenly spaced electromagnets are fixedly connected to the lower end of the isolation net.

As a further improvement of the present invention, the aperture of the screening mesh is smaller than the aperture of the filtering mesh, and the aperture of the screening mesh is larger than the aperture of the isolation mesh.

As a further improvement of the present invention, an air outlet plate is fixedly connected to the inner end of the processing chassis, and the air outlet plate is located above the screening net, and a hot air blower is fixedly connected to the outer end of the processing chassis, and the hot air blower is connected to the air outlet plate.

As a further improvement of the present invention, a crushing bin is provided in the processing chassis, and the crushing bin is connected to the screening box, a driving motor is embedded on the inner wall of the crushing bin, a crushing rod is fixedly connected to the lower end of the driving motor, and an air permeable net is fixedly connected to the connection between the screening box and the crushing bin.

As a further improvement of the present invention, the crusher comprises a first mounting cylinder, the first mounting cylinder is fixedly connected to one end of the screening cylinder away from the recovery box, and a pair of crushing rollers are rotatably connected in the middle of the first mounting cylinder.

As a further improvement of the present invention, the cleaning machine includes a second mounting cylinder, which is fixedly connected to the lower end of the crusher, a pair of cleaning rollers are rotatably connected in the middle of the second mounting cylinder, a pair of auxiliary scrapers are fixedly connected to the inner wall of the second mounting cylinder, and the pair of auxiliary scrapers are respectively abutted against the pair of cleaning rollers.

As a further improvement of the present invention, the composite ball includes a magnetic ball, which is arranged in a loading box. The outer end of the magnetic ball is wrapped with a cleaning agent, and the outer end of the magnetic ball is fixedly connected to a plurality of auxiliary bristles, and the auxiliary bristles penetrate the cleaning agent.

As a further improvement of the present invention, the auxiliary bristles include a shrinkage bag, the shrinkage bag is filled with dust-removing cotton, and a plurality of water seepage holes are opened at the outer end of the shrinkage bag.

Compared with the prior art, the advantages of the present invention are:

(1) This solution uses spectral characteristics to identify plastic types, automatically distinguish between recyclable and non-recyclable plastics, and concentrate non-recyclable plastics in recycling bins, thereby improving classification efficiency and accuracy.

(1) In this scheme, a pair of crushing rollers are used to initially crush the recyclable waste plastics for subsequent processing. At the same time, a spray head and a cleaning roller are used to fully clean the plastics to ensure that the plastics are clean and reduce subsequent pollution.

In this solution, the water supply tank and the spray head spray during the crushing process to reduce dust generation and keep the plastic moist for easy cleaning. The magnetic ball, cleaning aid and auxiliary bristles contained in the composite ball assist in cleaning and dust removal to ensure the cleaning effect.

In this solution, the filter screen and the screening screen are integrally formed into a screen structure, which can filter the moisture of the crushed plastic and screen the composite balls, ensuring that the cleaned plastic is dry.

In this solution, the hot air blower and the air outlet plate dry the crushed plastic through the hot air system to ensure that the plastic is dry, which is convenient for secondary crushing and subsequent processing. The crushing bin fully crushes the plastic through the drive motor and crushing rod to ensure that it is suitable for subsequent melting and molding.

The design of the built-in cleaning and compound balls in this solution makes the cleaning process efficient and environmentally friendly, reduces the use of chemical cleaning agents, ensures the purity of waste plastics through multiple crushing and cleaning, and improves the quality and reuse rate of recycled plastics. The purpose of fully cleaning the waste plastics through the delivery wheel and using it to absorb the dust generated by crushing, and the waste plastics entering the processing box are distinguished by infrared spectrometer whether they can be recycled. When the waste plastics fall into the crusher for preliminary crushing, the spray of the spray head can reduce the floating of dust. At the same time, the delivery wheel delivers an appropriate amount of compound balls together with the crushed plastics into the cleaning machine for full scrubbing, and then blows the scrubbed plastics dry and separates the delivery wheel from the crushed plastics, so that the crushed plastics enter the crushing bin for full crushing. At the same time, the adsorption effect of the delivery wheel adsorbs the dust generated by crushing, and in a closed environment, the wind blown out by the air outlet plate enters the crushing bin to form a flow channel, so that the dust enters the screening box and is adsorbed on the outer end of the delivery wheel, thereby effectively preventing secondary pollution caused by recycling.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram of the overall structure of the present invention;

FIG2 is a side cross-sectional structural schematic diagram of the present invention;

FIG3 is a schematic diagram of a side cross-sectional structure of a crusher according to the present invention;

FIG4 is a schematic diagram of a side cross-sectional structure of a cleaning machine according to the present invention;

FIG5 is a schematic diagram of a front cross-sectional structure of a composite ball of the present invention;

FIG6 is a schematic diagram of a front cross-sectional structure of auxiliary bristles of the present invention;

FIG7 is a schematic diagram of the structure of the delivery wheel of the present invention;

FIG. 8 is a schematic diagram of the isolation net structure of the present invention when viewed from above.

Description of the numbers in the figure:

1. Processing chassis; 2. Conveying channel; 3. Feed inlet; 4. Screening cylinder; 5. Opening and closing gate; 6. Infrared spectrometer; 7. Crusher; 71. First installation cylinder; 72. Crushing roller; 8. Cleaning machine; 81. Second installation cylinder; 82. Cleaning roller; 83. Auxiliary scraper; 9. Water supply tank; 10. Sprinkler head; 11. Filter box; 12. Filter net; 13. Screening box; 14. Screening net; 15. Isolation net; 16. Air outlet plate; 17. Hot air blower; 18. Driving motor; 19. Breaking rod; 20. Breathable net; 21. Loading box; 22. Composite ball; 221. Magnetic ball; 222. Cleaning aid; 223. Auxiliary brush; 2231. Shrink bag; 2232. Dust cotton; 23. Delivery wheel; 24. Recycling box.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

Embodiment 1:

Please refer to Figures 1-8, a waste plastic recycling and processing device includes a processing chassis 1, an infrared spectrometer 6 and a plurality of composite balls 22, a conveying channel 2 is provided in the processing chassis 1, a recycling box 24 is provided at the lower end of the conveying channel 2, a feed port 3 is provided at the upper end of the processing chassis 1, and the feed port 3 is communicated with the conveying channel 2, a screening cylinder 4 is provided in the processing chassis 1, and the screening cylinder 4 is located on the side of the conveying channel 2 away from the feed port 3, the screening cylinder 4 is communicated with the recycling box 24, an opening and closing gate 5 is installed on the upper end of the screening cylinder 4, the infrared spectrometer 6 is fixedly connected to the upper inner wall of the conveying channel 2, and the infrared spectrometer 6 is electrically connected to the opening and closing gate 5, by putting the waste plastic from the feed port 3 into the conveying channel 2 for transportation, using the infrared spectrometer 6 The material absorbs or reflects the light of a specific wavelength to identify the chemical composition, and analyzes the spectral characteristics of the light reflected or transmitted by the object, so that the type of plastic can be determined, and the non-recyclable plastic can be concentrated in the recycling box 24.

A crusher 7 and a cleaning machine 8 are respectively installed in the processing box 1, and the cleaning machine 8 is located at the lower end of the crusher 7. The crusher 7 and the cleaning machine 8 are both located at the end of the screening cylinder 4 away from the recycling box 24. The crusher 7 includes a first mounting cylinder 71, and the first mounting cylinder 71 is fixedly connected to the end of the screening cylinder 4 away from the recycling box 24. A pair of crushing rollers 72 are rotatably connected in the middle of the first mounting cylinder 71. The recyclable waste plastics are preliminarily crushed by the pair of crushing rollers 72 for subsequent recycling processing.

A water supply tank 9 is embedded at the upper end of the processing chassis 1, and a spray head 10 is fixedly connected to the lower end of the water supply tank 9, and the spray head 10 is located above the crusher 7. The water supply tank 9 provides water for the spray head 10 for spraying, so that the waste plastics can be cleaned during the crushing process, and the spraying can reduce the generation of dust.

The cleaning machine 8 includes a second mounting cylinder 81, which is fixedly connected to the lower end of the crusher 7. A pair of cleaning rollers 82 are rotatably connected in the middle of the second mounting cylinder 81. A pair of auxiliary scrapers 83 are fixedly connected to the inner wall of the second mounting cylinder 81, and the pair of auxiliary scrapers 83 are respectively abutted against the pair of cleaning rollers 82. The pair of cleaning rollers 82 abut against each other to scrub the fallen broken plastic and the accompanying delivery wheel 23 together, and the auxiliary scrapers 83 can scrape off the broken plastic hidden between the cleaning rollers 82.

A loading box 21 is fixedly connected to the side end of the water supply tank 9, and a plurality of compound balls 22 are arranged in the loading box 21. A delivery wheel 23 is rotatably connected between the loading box 21 and the processing machine box 1, and the delivery wheel 23 is located above the crusher 7. An appropriate amount of compound balls 22 are delivered through the delivery wheel 23 to be crushed together with the plastic, and fall into the cleaning machine 8 for auxiliary brushing, and the loading box 21 continuously replenishes the compound balls 22 for the delivery wheel 23.

The composite ball 22 includes a magnetic ball 221, which is arranged in the loading box 21. The outer end of the magnetic ball 221 is wrapped with a cleaning agent 222. The outer end of the magnetic ball 221 is fixedly connected with a plurality of auxiliary bristles 223, and the auxiliary bristles 223 penetrate the cleaning agent 222. The cleaning agent 222 is crushed and combined with water when passing through the crushing roller 72 to form a cleaning agent. At the same time, the broken plastic is effectively scrubbed under the action of the auxiliary bristles 223. Here, the cleaning agent 222 can be made by mixing soap and washing powder. The hydrophilic and hydrophobic groups of the soap molecules can emulsify and disperse grease and dirt in water, thereby achieving a cleaning effect. The surfactant of the washing powder reduces the surface tension of water, helps water and dirt to contact, and the enzyme decomposes stains such as protein and fat. The alkaline auxiliary agent neutralizes acidic dirt.

The auxiliary bristles 223 include a shrinkage bag 2231, which is filled with dust-removing cotton 2232. A plurality of water seepage holes are provided at the outer end of the shrinkage bag 2231. The dust-removing cotton 2232 expands after absorbing sufficient water, thereby increasing the volume of the auxiliary bristles 223. The auxiliary bristles 223 can thereby better adsorb dust. The dust-removing cotton 2232 is made of polyurethane foam, which has good water absorption and expansion properties. Its porous structure can effectively capture and adsorb dust and fine particles, and can effectively adsorb dust generated by crushing.

A filter box 11 is provided in the processing machine box 1, and the filter box 11 is located below the cleaning machine 8. A filter screen 12 is fixedly connected to the upper end of the filter box 11. A screening box 13 is fixedly connected to the end of the filter box 11 away from the screening cylinder 4. A screening screen 14 is fixedly connected to the upper end of the screening box 13, and the filter screen 12 and the screening screen 14 are integrally formed. The moisture of the cleaned crushed plastic is filtered through the filter screen 12 and collected in the filter box 11, and then the crushed plastic slides to the upper end of the screening screen 14.

An air outlet plate 16 is fixedly connected to the inner end of the processing chassis 1, and the air outlet plate 16 is located above the screening net 14. A hot air blower 17 is fixedly connected to the outer end of the processing chassis 1, and the hot air blower 17 is connected to the air outlet plate 16. The hot air provided by the hot air blower 17 is blown out by the air outlet plate 16 to dry the crushed plastic, so as to facilitate subsequent secondary crushing.

The inner end of the screening box 13 is fixedly connected to an isolation net 15, and the lower end of the isolation net 15 is fixedly connected to a plurality of evenly spaced electromagnets. The electromagnets are activated to magnetize the magnetic balls 221, so that the composite balls 22 pass through the screening net 14 and fall to the upper end of the isolation net 15.

The aperture of the screening net 14 is smaller than that of the filter net 12, and is larger than that of the isolation net 15. The small aperture is used to filter the moisture of the crushed plastic after brushing, and the screening net 14 can separate the composite ball 22 from the crushed plastic, and the isolation net 15 is used to carry the delivery wheel 23 and filter excess moisture.

A crushing bin is provided in the processing chassis 1, and the crushing bin is connected with the screening box 13. A driving motor 18 is embedded in the inner wall of the crushing bin, and a crushing rod 19 is fixedly connected to the lower end of the driving motor 18. A breathable net 20 is fixedly connected to the connection between the screening box 13 and the crushing bin. The breathable net 20 can be used to shield the secondary crushed plastic to prevent splashing. The crushing rod 19 is driven by the driving motor 18 to fully crush the waste plastic falling into the crushing bin to ensure that it is suitable for melting and extrusion molding.

Working principle:

The waste plastics are fed into the processing machine box 2 from the feed port 3 for transportation. The chemical composition is identified by using the infrared spectrometer 6's property of absorbing or reflecting light of a specific wavelength. The spectral characteristics of the light reflected or transmitted by the object are analyzed, so that the type of plastic can be determined for distinction. The opening and closing gate 5 is activated and opened under the control of the infrared spectrometer 6, and the non-recyclable plastics are collected in the recycling box 24. Then the opening and closing gate 5 is automatically closed, and the recyclable plastics slide into the middle of the crusher 7. The recyclable waste plastics are initially crushed by a pair of crushing rollers 72, and the water supply tank 9 provides water for the spray head 10 to spray, so that the waste plastics are cleaned during the crushing process. At the same time, an appropriate amount of composite balls 22 are released through the delivery wheel 23 to be crushed together with the plastics. A pair of cleaning rollers 82 abut against each other to scrub the fallen crushed plastics and the accompanying delivery wheel 23. The cleaning aid 222 is used to clean the recycled plastics after being crushed. The roller 72 is crushed and combined with water to form a cleaning agent. At the same time, the broken plastic is effectively brushed under the action of the auxiliary bristles 223. The filter screen 12 filters the moisture of the cleaned broken plastic into the filter box 11 for collection. Then the broken plastic slides to the upper end of the screening net 14. The hot air blower 17 provides hot air to make the air outlet plate 16 blow out to dry the broken plastic. The magnetization is activated by the electromagnet to attract the magnetic ball 221, so that the composite ball 22 passes through the screening net 14 and falls to the upper end of the isolation net 15. At this time, the dust removal cotton 2232 expands after absorbing sufficient moisture, so that the volume of the auxiliary bristles 223 increases. When the driving motor 18 drives the crushing rod 19 to fully crush the waste plastic that falls into the crushing bin, the delivery wheel 23 absorbs the generated dust, and the wind blown out by the air outlet plate 16 enters the crushing bin and forms a flow through the air permeable net 20 to drive the dust to be completely adsorbed on the outer end of the delivery wheel 23.

It can be seen from the above technical solutions that the present invention has the following beneficial effects:

The present scheme uses the delivery wheel 23 to fully clean the waste plastics and utilize it to absorb the dust generated by crushing. The infrared spectrometer 6 is used to distinguish whether the waste plastics entering the processing box 2 can be recycled. When the waste plastics fall into the crusher 7 for preliminary crushing, the spraying of the spray head 10 can reduce the floating of dust. At the same time, the delivery wheel 23 delivers an appropriate amount of composite balls 22 together with the crushed plastics into the cleaning machine 8 for sufficient brushing. Then, the brushed plastics are blown dry and the delivery wheel 23 is separated from the crushed plastics, so that the crushed plastics enter the crushing bin for sufficient crushing. At the same time, the dust generated by the crushing is absorbed under the adsorption effect of the delivery wheel 23. In a closed environment, the wind blown out by the air outlet plate 16 enters the crushing bin to form a flow channel, so that the dust enters the screening box 13 and is adsorbed on the outer end of the delivery wheel 23, thereby effectively preventing secondary pollution caused by recycling.

It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

In addition, it should be understood that although the present specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that those skilled in the art can understand.

Claims (10)

1. The utility model provides a waste plastic recovery processing device which characterized in that: comprising the following steps:

The device comprises a processor case (1), wherein a conveying channel (2) is arranged in the processor case (1), a recovery box (24) is arranged at the lower end of the conveying channel (2), a feed inlet (3) is formed in the upper end of the processor case (1), the feed inlet (3) is communicated with the conveying channel (2), a screening cylinder (4) is arranged in the processor case (1), the screening cylinder (4) is located at one side, far away from the feed inlet (3), of the conveying channel (2), the screening cylinder (4) is communicated with the recovery box (24), and an opening and closing valve (5) is arranged at the upper end of the screening cylinder (4);

The infrared spectrometer (6) is fixedly connected to the upper inner wall of the conveying channel (2), and the infrared spectrometer (6) is electrically connected with the opening and closing gate (5);

A grinding machine (7) and a cleaning machine (8) are respectively arranged in the processor case (1), the cleaning machine (8) is positioned at the lower end of the grinding machine (7), and the grinding machine (7) and the cleaning machine (8) are both positioned at one end of the screen reducing cylinder (4) far away from the recovery case (24);

the upper end of the processor box (1) is embedded with a water supply tank (9), the lower end of the water supply tank (9) is connected with a spray header (10), and the spray header (10) is positioned above the grinding mill (7);

The compound ball (22), and compound ball (22) quantity is a plurality of, supply tank (9) side fixedly connected with loading tank (21), a plurality of compound ball (22) are located in loading tank (21), rotate between loading tank (21) and processor case (1) and be connected with put in wheel (23), and put in wheel (23) are located grinding rolls (7) top.

2. The waste plastic recycling device according to claim 1, wherein: be equipped with rose box (11) in treater case (1), and rose box (11) are located cleaning machine (8) below, rose box (11) upper end fixedly connected with filter screen (12), rose box (11) are kept away from sieve and are subtracted section of thick bamboo (4) one end fixedly connected with screening case (13), screening case (13) upper end fixedly connected with screening net (14), and filter screen (12) and screening net (14) integrated into one piece.

3. The waste plastic recycling device according to claim 2, wherein: the inner end of the screening box (13) is fixedly connected with an isolation net (15), and the lower end of the isolation net (15) is fixedly connected with a plurality of electromagnets which are uniformly and respectively.

4. A waste plastic recycling apparatus according to claim 3, wherein: the mesh diameter of the screening net (14) is smaller than the mesh diameter of the filter screen (12), and the mesh diameter of the screening net (14) is larger than the mesh diameter of the isolation net (15).

5. The waste plastic recycling device according to claim 2, wherein: the inner end of the processor case (1) is fixedly connected with an air outlet plate (16), the air outlet plate (16) is positioned above the screening net (14), the outer end of the processor case (1) is fixedly connected with an air heater (17), and the air heater (17) is connected with the air outlet plate (16).

6. The waste plastic recycling device according to claim 1, wherein: the novel crushing machine is characterized in that a crushing bin is arranged in the processing machine box (1), the crushing bin is communicated with the screening box (13), a driving motor (18) is embedded in the upper inner wall of the crushing bin, a crushing rod (19) is fixedly connected to the lower end of the driving motor (18), and a ventilation net (20) is fixedly connected to the joint of the screening box (13) and the crushing bin.

7. The waste plastic recycling device according to claim 1, wherein: the grinding machine (7) comprises a first mounting cylinder (71), the first mounting cylinder (71) is fixedly connected to one end, far away from the recovery box (24), of the screening cylinder (4), and a pair of grinding rollers (72) are rotatably connected in the middle of the first mounting cylinder (71).

8. The waste plastic recycling device according to claim 1, wherein: the cleaning machine (8) comprises a second mounting cylinder (81), the second mounting cylinder (81) is fixedly connected to the lower end of the grinding mill (7), a pair of cleaning rollers (82) are rotatably connected in the middle of the second mounting cylinder (81), a pair of auxiliary scraping plates (83) are fixedly connected to the inner wall of the second mounting cylinder (81), and the pair of auxiliary scraping plates (83) are respectively abutted against the pair of cleaning rollers (82).

9. The waste plastic recycling device according to claim 1, wherein: the composite ball (22) comprises a magnetic suction ball (221), the magnetic suction ball (221) is arranged in the loading box (21), the outer end of the magnetic suction ball (221) is wrapped with a cleaning aid (222), the outer end of the magnetic suction ball (221) is fixedly connected with a plurality of auxiliary bristles (223), and the auxiliary bristles (223) penetrate through the cleaning aid (222).

10. The waste plastic recycling device according to claim 9, wherein: the auxiliary brush hair (223) comprises a shrinkage bag (2231), dust-removing cotton (2232) is filled in the shrinkage bag (2231), and a plurality of water seepage holes are formed in the outer end of the shrinkage bag (2231).