A treatment device for degradable plastic recycling

Abstract

The application relates to the technical field of degradable plastic recycling equipment, in particular to a treatment device for degradable plastic recycling, which comprises a first box body, the top end of the first box body is provided with a second box body, the top end of the second box body is provided with a crushing mechanism for crushing plastic, the crushing mechanism comprises a third box body arranged at the top end of the second box body, and the inner side wall of the crushing mechanism is provided with a drying mechanism for preheating and drying plastic. The treatment device for degradable plastic recycling is characterized in that the drying mechanism and the crushing mechanism are in depth cooperation, the crushing efficiency and the particle purity are guaranteed, the drying mechanism is started, hot air is conveyed by a second air pump, the hot air is sprayed through rotating pipes and drying plate holes, meanwhile, the drying plate is driven to reciprocating swing by a cam, and the adsorbed moisture is efficiently removed by the cooperation of the baffle leakage prevention design.

Description

Technical Field

[0001] This invention relates to the field of biodegradable plastic recycling equipment, and in particular to a processing device for recycling biodegradable plastics. Background Technology

[0002] Biodegradable plastics, with their environmentally friendly properties, have been widely replaced by traditional non-biodegradable plastics and are used in many fields such as disposable tableware, food packaging, and agricultural films. However, biodegradable plastics are not "completely pollution-free." If there is a lack of an efficient recycling and pretreatment system after use, it will not only waste resources, but the residual impurities and moisture will also affect the performance of recycled products. They may even take a long time to degrade in the natural environment, bringing potential environmental pressure. Therefore, the standardized recycling and pretreatment of biodegradable plastics has become a key link.

[0003] Existing biodegradable plastic recycling and processing equipment has significant drawbacks: First, biodegradable plastics are hygroscopic and easily melt and stick when heated. Existing devices lack a targeted design for coordinated drying and crushing. Direct crushing of wet materials can easily lead to material adhesion to the crushing parts, while high-temperature crushing can cause material agglomeration, seriously affecting recycling efficiency. Second, biodegradable plastic recycling requires high particle size uniformity. Existing devices mostly perform single-stage crushing and lack secondary refining structures. The crushed particles are of mixed coarse and fine sizes, which cannot meet the requirements of subsequent granulation, injection molding and other recycling processes. Furthermore, biodegradable plastic recycled raw materials often contain fine impurities, which can easily clog the screen during screening. Existing devices mostly rely on manual cleaning, which interrupts the operation process and reduces the continuity of processing. Moreover, the lack of a material residue cleaning mechanism for core components such as crushing rollers and cutters leads to the solidification and adhesion of residual materials after long-term use, resulting in a decrease in crushing accuracy and shearing effect, affecting the stability of recycling quality. To solve the above problems, we propose a processing device for biodegradable plastic recycling. Summary of the Invention

[0004] The main objective of this invention is to provide a biodegradable plastic recycling processing device that can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A biodegradable plastic recycling processing device includes a first box, a second box at the top of the first box, a crushing mechanism at the top of the second box for crushing plastic, a third box at the top of the second box, a drying mechanism for preheating and drying plastic on the inner wall of the crushing mechanism, a sieve plate on the inner wall of the first box, and a cleaning mechanism for cleaning the sieve plate on the inner wall of the first box.

[0006] Preferably, the cleaning mechanism includes a second motor disposed on one side wall of the first housing, a rotating plate disposed at the output end of the second motor, a sliding block rotatably connected to one end of the rotating plate, a sliding groove provided on the inner side wall of the first housing, a slider slidably connected to the inner side wall of the sliding groove, a U-shaped plate disposed at one end of the slider, the inner side wall of the U-shaped plate slidably connected to the sliding block, a T-shaped sliding plate slidably connected to the outer side wall of the U-shaped plate, and a support frame rotatably connected to one end of the T-shaped sliding plate.

[0007] Preferably, the cleaning mechanism further includes two guide grooves at the bottom of the sieve plate, the inner wall of the guide grooves being slidably connected to the outer wall of the support frame, a second electric telescopic rod being provided at the bottom of the support frame, a lifting plate being provided at the telescopic end of the second electric telescopic rod, a plurality of third gears being rotatably connected to the inner wall of the lifting plate, a third motor being provided at the bottom of one of the third gears, the bottom of the third motor being fixedly connected to the bottom of the inner wall of the lifting plate, a third chain being driven by the plurality of third gears, and a sweeping rod being provided through the lifting plate at the top of each of the plurality of third gears.

[0008] Preferably, two crushing rollers are rotatably connected to the inner side wall of the third chamber. One end of each crushing roller passes through the third chamber and is provided with a first rotating rod. A first air pump is fixedly connected to one side wall of the third chamber. Two first air transmission pipes are provided at the output end of the first air pump. The other end of each of the two first air transmission pipes passes through the third chamber and is rotatably connected to the other end of the crushing roller. Multiple holes are opened on the outer side wall of each of the two crushing rollers, and a first one-way valve is fixedly connected to the inner side wall of the corresponding hole.

[0009] Preferably, a first gear is provided on the outer wall of one of the first rotating rods, a second rotating rod is rotatably connected to one side wall of the third housing, a second gear is provided on the outer wall of the second rotating rod, the first gear and the second gear mesh, a first chain is drivenly connected to the outer wall of the first rotating shaft of one of the first rotating rods, and a second chain is drivenly connected to the other first rotating rod.

[0010] Preferably, the third housing is provided with a first electric telescopic rod on both side walls, the telescopic end of the first electric telescopic rod is provided with a movable plate, and one side wall of the movable plate is provided with multiple scraping teeth.

[0011] Preferably, the drying mechanism includes a rotating tube rotatably connected to the inner wall of the third chamber, a drying plate is provided on the outer wall of the rotating tube, a plurality of holes are opened at the top of the drying plate, and a second one-way valve is fixedly connected to the inner wall of the corresponding hole. The drying mechanism also includes a second air pump provided on one side wall of the third chamber, a second air transmission pipe provided at the output end of the second air pump, and the other end of the second air transmission pipe is rotatably connected to one end of the rotating tube.

[0012] Preferably, baffles are provided on both sides of the drying plate, and a telescopic block is provided at one end of the baffle. The drying mechanism also includes a third box with a first slot on both sides. An elastic component is provided at the bottom of the inner side wall of the first slot, and a telescopic block is provided at the top of the elastic component. One side wall of the telescopic block is rotatably connected to one side wall of the baffle.

[0013] Preferably, the drying mechanism further includes a second rotating shaft rotatably connected to the inner side wall of the third chamber, a cam provided on the outer side wall of the second rotating shaft, the outer side wall of the cam contacting the bottom side wall of the drying plate, and a fourth rotating rod provided through the other end of the second rotating shaft through the third chamber, the fourth rotating rod being drivenly connected to the third rotating rod by a fourth chain.

[0014] Preferably, a frame is provided at the bottom of the first housing, a first motor is provided at the top of the frame, a transmission disk is rotatably connected to one side wall of the first housing, a transmission belt is rotatably connected to the output end of the first motor and the outer side wall of the transmission disk, a first rotating shaft is rotatably connected to the inner side wall of the first housing, one end of the first rotating shaft passes through the first housing and is fixedly connected to the transmission disk, a plurality of triangular plates are provided on the outer side wall of the first rotating shaft, and a cutter is provided on the outer side wall of each of the plurality of triangular plates, and two cutting plates are provided on the inner side wall of the first housing.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This biodegradable plastic recycling device ensures crushing efficiency and particle purity through the deep synergy of the drying and crushing mechanisms. Upon activation of the drying mechanism, a second air pump delivers hot air through a rotating tube and the holes in the drying plate. Simultaneously, a cam drives the drying plate to oscillate back and forth. Combined with a leak-proof baffle design, the biodegradable plastic to be processed is evenly spread after feeding, allowing the hot air to fully penetrate the material's surface and interior, efficiently removing adsorbed moisture. The pre-treated, dried material falls between the crushing rollers. While the two rollers rotate at high speed, squeezing and shearing, a first air pump sprays high-pressure air through the internal air channels and holes of the crushing rollers, constantly blowing away material residue adhering to the roller surface. Combined with a first electric telescopic rod driving the scraper teeth for periodic deep cleaning, this completely avoids the problems of wet material adhesion and high-temperature melting and clumping, ensuring a continuous and stable crushing process. The crushed coarse particles are free from adhesion and impurities, laying a high-quality foundation for subsequent fine processing. This biodegradable plastic recycling device features a self-cleaning cleaning mechanism that utilizes multi-component linkage to achieve screen self-cleaning, requiring no manual intervention. When the screening plate becomes clogged, the cleaning mechanism is activated. A second motor drives a rotating plate to rotate, and through the cooperation of a sliding block and a retaining plate, the support frame moves left and right along the guide groove. Simultaneously, a second electric telescopic rod pushes a lifting plate upward, allowing the cleaning rods to precisely insert into the screening plate mesh. Subsequently, a third motor, via gear and chain transmission, drives all cleaning rods to rotate synchronously, rotating and cleaning the clogged particles and impurities within the mesh, thoroughly removing the blockage. This self-cleaning process is fully automated, eliminating the need for manual cleaning during downtime. This not only avoids operational interruptions caused by frequent shutdowns for cleaning in traditional devices but also significantly reduces labor intensity and time costs. Combined with the anti-sticking design in the initial drying and crushing stages, it significantly improves the overall efficiency of biodegradable plastic recycling. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the overall structure of the present invention; Figure 3 This is a partial structural cross-sectional view of the present invention; Figure 4 This is a partial structural diagram of the crushing mechanism of the present invention; Figure 5 This is a second partial structural schematic diagram of the crushing mechanism of the present invention; Figure 6 This is a partial cross-sectional view of the drying mechanism of the present invention; Figure 7 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 8 This is a partial structural diagram of the cleaning mechanism of the present invention; Figure 9 This is a partial cross-sectional view of the cleaning mechanism of the present invention.

[0017] In the diagram: 1. First housing; 12. Second housing; 13. Frame; 14. First motor; 15. Transmission belt; 16. Transmission disc; 17. First rotating shaft; 18. Triangular plate; 19. Cutter; 120. Cutting plate; 121. Screening plate; 2. Crushing mechanism; 21. Third housing; 22. First rotating rod; 23. First gear; 24. Second rotating rod; 25. Second gear; 26. First chain; 27. Third rotating rod; 28. Second chain; 29. ​​Crushing roller; 210. First one-way valve; 211. First air pump; 212. First air transmission pipe; 213. First electric telescopic rod; 214. Moving plate; 215. Scraper; 3. Drying mechanism; 1. Second rotating shaft; 32. Cam; 33. Drying plate; 34. Second one-way valve; 35. Baffle; 36. First slot; 37. Telescopic block; 38. Elastic component; 39. Fourth rotating rod; 310. Second air pump; 311. Second air transmission pipe; 312. Fourth chain; 313. Rotating pipe; 4. Cleaning mechanism; 41. Second motor; 42. Sliding block; 43. Rotating plate; 44. Reverse plate; 45. Slide groove; 46. Slider; 47. T-shaped sliding plate; 48. Support frame; 49. Second electric telescopic rod; 410. Lifting plate; 411. Third motor; 412. Third gear; 413. Sweeping rod; 414. Third chain; 415. Guide groove. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0019] like Figure 1 - Figure 9 As shown, a biodegradable plastic recycling processing device includes a first box 1, a second box 12 disposed at the top of the first box 1, a crushing mechanism 2 disposed at the top of the second box 12 for crushing plastic, the crushing mechanism 2 including a third box 21 disposed at the top of the second box 12, a drying mechanism 3 disposed on the inner side wall of the crushing mechanism 2 for preheating and drying plastic, a sieve plate 121 disposed on the inner side wall of the first box 1, and a cleaning mechanism 4 disposed on the inner side wall of the first box 1 for cleaning the sieve plate 121.

[0020] In this embodiment, the cleaning mechanism 4 includes a second motor 41 disposed on one side wall of the first housing 1. A rotating plate 43 is disposed at the output end of the second motor 41. A sliding block 42 is rotatably connected to one end of the rotating plate 43. A groove 45 is provided on the inner side wall of the first housing 1. A slider 46 is slidably connected to the inner side wall of the groove 45. A return plate 44 is disposed at one end of the slider 46. The inner side wall of the return plate 44 is slidably connected to the sliding block 42. A T-shaped slide plate 47 is slidably connected to the outer side wall of the return plate 44. A support frame 48 is rotatably connected to one end of the T-shaped slide plate 47. The cleaning mechanism 4 also includes two guides provided at the bottom end of the sieve plate 121. The inner wall of the guide groove 415 is slidably connected to the outer wall of the support frame 48. The bottom end of the support frame 48 is provided with a second electric telescopic rod 49. The telescopic end of the second electric telescopic rod 49 is provided with a lifting plate 410. The inner wall of the lifting plate 410 is rotatably connected with multiple third gears 412. The bottom end of one third gear 412 is provided with a third motor 411. The bottom end of the third motor 411 is fixedly connected to the bottom end of the inner wall of the lifting plate 410. The multiple third gears 412 are connected to a third chain 414. The top ends of the multiple third gears 412 all penetrate the lifting plate 410 and are provided with a sweeping rod 413.

[0021] Specifically, the cleaning mechanism 4 is activated, and the second motor 41 drives the rotating plate 43 to rotate, causing the sliding block 42 and the T-shaped slide plate 47 to slide up and down within the return plate 44. This drives the return plate 44 to move left and right along the slide groove 45 via the slider 46, thereby driving the support frame 48 to slide along the guide groove 415 at the bottom of the sieve plate 121. At the same time, the second electric telescopic rod 49 pushes the lifting plate 410 to rise, causing the sweeping rod 413 to insert into the sieve hole on the bottom surface of the sieve plate 121. The third motor 411 is activated, driving a third gear 412 to rotate. Through the third chain 414, all third gears 412 rotate synchronously, and the sweeping rod 413 rotates accordingly, rotating and cleaning the mesh of the sieve plate 121. The blocked particles and impurities are completely swept off, and the sieving function can be restored without manual intervention, ensuring the continuity of biodegradable plastic recycling.

[0022] In this embodiment, two crushing rollers 29 are rotatably connected to the inner wall of the third housing 21. One end of each crushing roller 29 penetrates the third housing 21 and is equipped with a first rotating rod 22. A first air pump 211 is fixedly connected to one side wall of the third housing 21. Two first air transmission pipes 212 are provided at the output end of the first air pump 211. The other ends of both first air transmission pipes 212 penetrate the third housing 21 and are rotatably connected to the other ends of the crushing rollers 29. Multiple holes are provided on the outer walls of both crushing rollers 29, and a first one-way valve 210 is fixedly connected to the inner wall of each corresponding hole. A first rotating rod 22 is provided on the outer wall of its outer side. A first gear 23 is rotatably connected to a second rotating rod 24 on one side wall of the third housing 21. A second gear 25 is provided on the outer side wall of the second rotating rod 24. The first gear 23 meshes with the second gear 25. A first rotating rod 22 is driven by a first chain 26 on the outer side wall of the first rotating shaft 17. A second chain 28 is driven by the second rotating rod 24 and the other first rotating rod 22. A first electric telescopic rod 213 is provided on both side walls of the third housing 21. A moving plate 214 is provided at the telescopic end of the first electric telescopic rod 213. A plurality of scraping teeth 215 are provided on one side wall of the moving plate 214.

[0023] Specifically, the first rotating rod 22, through the meshing of the first gear 23 and the second gear 25, in conjunction with the second rotating rod 24 and the second chain 28, drives another first rotating rod 22 to rotate in the opposite direction, causing the two crushing rollers 29 to rotate at high speed relative to each other, extruding and shearing the biodegradable plastic to initially break down large pieces of material into coarse particles. At the same time, the first air pump 211 is activated, and high-pressure airflow enters the interior of the crushing roller 29 through the first air transmission pipe 212. At this time, multiple first one-way valves 210 are opened and sprayed out through the holes on the outer wall to blow away the biodegradable plastic residue adhering to the surface of the crushing roller 29 in real time, avoiding a decrease in crushing efficiency due to the melting and adhesion of materials. During the crushing process, the first electric telescopic rod 213 can be activated periodically to push the moving plate 214 closer to the crushing roller 29, and the stubborn residue can be scraped away deeply by the scraper teeth 215.

[0024] In this embodiment, the drying mechanism 3 includes a rotating pipe 313 rotatably connected to the inner wall of the third housing 21. A drying plate 33 is provided on the outer wall of the rotating pipe 313. The top of the drying plate 33 has multiple holes, and a second one-way valve 34 is fixedly connected to the inner wall of the corresponding holes. The drying mechanism 3 also includes a second air pump 310 provided on one side wall of the third housing 21. A second air transmission pipe 311 is provided at the output end of the second air pump 310. The other end of the second air transmission pipe 311 is rotatably connected to one end of the rotating pipe 313. Baffles 35 are provided on both sides of the drying plate 33. A telescopic block 37 is provided at one end of each baffle 35. The drying mechanism 3 also includes a second air pump 310 rotatably connected to the inner wall of the third housing 21. A second air transmission pipe 311 is provided at the output end of the second air pump 310. The other end of the second air transmission pipe 311 is rotatably connected to one end of the rotating pipe 313. A second one-way valve 34 is fixedly connected to the inner wall of the third housing 21. The drying mechanism 3 also includes a second air pump 310 rotatably connected to the inner wall of the third housing 21. A second one-way valve 34 is fixedly ... The three boxes 21 each have a first slot 36 on both sides. An elastic component 38 is provided at the bottom of the inner side wall of the first slot 36. A telescopic block 37 is provided at the top of the elastic component 38. One side wall of the telescopic block 37 is rotatably connected to one side wall of the baffle 35. The drying mechanism 3 also includes a second rotating shaft 31 rotatably connected to the inner side wall of the third box 21. A cam 32 is provided on the outer side wall of the second rotating shaft 31. The outer side wall of the cam 32 contacts the bottom side wall of the drying plate 33. The other end of the second rotating shaft 31 passes through the third box 21 and is provided with a fourth rotating rod 39. The fourth rotating rod 39 is connected to the third rotating rod 27 by a fourth chain 312.

[0025] Specifically, the second air pump 310 is started, and the hot air enters the rotating pipe 313 through the second air transmission pipe 311, and then sprays into the third chamber 21 through the holes on the drying plate 33. At this time, the second one-way valve 34 opens simultaneously. At the same time, the second rotating shaft 31 drives the cam 32 to rotate through the transmission of the fourth rotating rod 39 and the fourth chain 312. The cam 32 pushes the drying plate 33 to swing up and down. With the extension and retraction of the elastic component 38 in the first slot 36, the extension block 37 and the baffle 35 are linked, so that the drying plate 33 maintains stable reciprocating motion, allowing the hot air to diffuse evenly and ensuring that the internal temperature of the third chamber 21 is constant.

[0026] In this embodiment, a frame 13 is provided at the bottom of the first housing 1, and a first motor 14 is provided at the top of the frame 13. A transmission disk 16 is rotatably connected to one side wall of the first housing 1. A transmission belt 15 is connected to the output end of the first motor 14 and the outer side wall of the transmission disk 16. A first rotating shaft 17 is rotatably connected to the inner side wall of the first housing 1. One end of the first rotating shaft 17 passes through the first housing 1 and is fixedly connected to the transmission disk 16. Multiple triangular plates 18 are provided on the outer side wall of the first rotating shaft 17. Each of the multiple triangular plates 18 has a cutter 19 on its outer side wall. Two cutting plates 120 are provided on the inner side wall of the first housing 1.

[0027] Specifically, when the first rotating shaft 17 rotates, it drives the triangular plate 18 and the cutter 19 on the outer side wall to rotate at high speed. The cutter 19 cooperates with the cutting plate 120 and the sieve plate 121 fixed on the inner side wall of the first box 1 to perform secondary shearing on the coarse particles and refine them into smaller particles with more uniform particle size.

[0028] It should be noted that this invention is a biodegradable plastic recycling processing device. The user will connect the main power supply of the device, increase the drying temperature according to the type of biodegradable plastic to be processed, and set the corresponding drying temperature, appropriate crushing speed and other parameters through the control cabinet. At the same time, the second air pump 310 is started, and the hot air enters the rotating pipe 313 through the second air transmission pipe 311, and then sprays into the third chamber 21 through the holes on the drying plate 33. At this time, the second one-way valve 34 opens synchronously. At the same time, the second rotating shaft 31 drives the cam 32 to rotate through the transmission of the fourth rotating rod 39 and the fourth chain 312. The cam 32 pushes the drying plate 33 to swing up and down. With the extension and retraction of the elastic component 38 in the first slot 36, the extension block 37 and the baffle 35 are linked, so that the drying plate 33 maintains stable reciprocating motion, allowing the hot air to diffuse evenly and ensuring that the internal temperature of the third chamber 21 is constant. This lays the foundation for drying and dehumidifying the biodegradable plastic and preventing subsequent crushing and adhesion.

[0029] Subsequently, the biodegradable plastic to be recycled is fed into the feed inlet at the top of the third box 21. The material falls onto the surface of the drying plate 33. During the oscillation of the drying plate 33, the material is evenly spread out to avoid insufficient drying in certain areas. The baffles 35 on both sides of the drying plate 33 effectively prevent material leakage. Hot airflow fully contacts the surface of the material through the holes, efficiently removing the moisture adsorbed by the biodegradable plastic and reducing the risk of subsequent crushing and adhesion. The dried material falls from the end of the drying plate 33 between the two crushing rollers 29. The first motor 14 is started, which drives the transmission disc 16 to rotate via the transmission belt 15, thereby driving... The first rotating shaft 17 rotates, and the first rotating shaft 17 drives one of the first rotating rods 22 to rotate via the first chain 26. The first rotating rod 22, through the meshing of the first gear 23 and the second gear 25, cooperates with the second rotating rod 24 and the second chain 28 to drive the other first rotating rod 22 to rotate in the opposite direction, causing the two crushing rollers 29 to rotate at high speed relative to each other, extruding and shearing the biodegradable plastic, initially breaking down large pieces of material into coarse particles. At the same time, the first air pump 211 is started, and high-pressure airflow enters the crushing rollers 29 through the first air transmission pipe 212. Multiple first one-way valves 210 open and spray out through the holes on their outer walls to blow away biodegradable plastic residues adhering to the surface of the crushing roller 29 in real time, avoiding a decrease in crushing efficiency due to material melting and adhesion. During the crushing process, the first electric telescopic rod 213 can be activated periodically to push the moving plate 214 closer to the crushing roller 29, and the scraper teeth 215 can deeply scrape away stubborn residues to ensure the surface of the crushing roller 29 is clean and maintain a stable crushing effect. The biodegradable plastic coarse particles after primary crushing fall into the first box 1 through the second box 12. When the first rotating shaft 17 rotates, it carries... The triangular plate 18 on the outer side wall rotates at high speed with the cutter 19. The cutter 19 cooperates with the cutting plate 120 and the sieve plate 121 fixed on the inner side wall of the first box 1 to perform secondary shearing on the coarse particles, refining them into smaller particles with more uniform particle size. This precisely matches the raw material requirements for biodegradable plastic recycling granulation. The biodegradable plastic particles after secondary shearing fall onto the sieve plate 121 and into the bottom of the first box 1. Unqualified particles with excessive particle size remain on the surface of the sieve plate 121. The cutter 19 then shears the excessively large particles again to ensure the consistency of the output particle size.

[0030] Because biodegradable plastic granules are relatively soft and may contain fine impurities, they can easily clog the mesh of the sieve plate 121 during the screening process. At this time, the cleaning mechanism 4 is activated, and the second motor 41 drives the rotating plate 43 to rotate, causing the sliding block 42 and the T-shaped slide plate 47 to slide up and down within the return plate 44. This drives the return plate 44 to move left and right along the slide groove 45 via the slider 46, which in turn drives the support frame 48 to slide along the guide groove 415 at the bottom of the sieve plate 121. At the same time, the second electric telescopic rod 49 pushes the lifting plate 410 upward, causing the sweeping rod 413 to insert into the sieve plate. In the screening holes on the bottom of 121, the third motor 411 is started, driving a third gear 412 to rotate. Through the third chain 414, all the third gears 412 rotate synchronously. The cleaning rod 413 rotates accordingly, cleaning the mesh of the screening plate 121. The blocked particles and impurities are completely swept off, and the screening function can be restored without manual intervention, ensuring the continuity of biodegradable plastic recycling. Finally, the discharge valve at the bottom of the first box 1 is opened to collect the qualified biodegradable plastic particles after screening and transfer them to the subsequent recycling process.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A biodegradable plastic recycling processing device, comprising a first housing (1), characterized in that: The first box (1) has a second box (12) at its top, and the second box (12) has a crushing mechanism (2) at its top for crushing plastic. The crushing mechanism (2) includes a third box (21) at its top. The inner wall of the crushing mechanism (2) has a drying mechanism (3) for preheating and drying plastic. The inner wall of the first box (1) has a sieve plate (121) and a cleaning mechanism (4) for cleaning the sieve plate (121). The cleaning mechanism (4) includes a second motor (41) on one side wall of the first box (1). The output end of the second motor (41) has a rotating plate (43). One end is rotatably connected to a sliding block (42), and the inner side wall of the first box (1) is provided with a sliding groove (45). The inner side wall of the sliding groove (45) is slidably connected to a slider (46). One end of the slider (46) is provided with a spiral plate (44). The inner side wall of the spiral plate (44) is slidably connected to the sliding block (42). The outer side wall of the spiral plate (44) is slidably connected to a T-shaped slide plate (47). One end of the T-shaped slide plate (47) is rotatably connected to a support frame (48). The cleaning mechanism (4) also includes two guide grooves (415) opened at the bottom of the sieve plate (121). The inner side wall of the guide groove (415) is slidably connected to the outer side wall of the support frame (48). The bottom end of the support frame (48) is provided with a second electric telescopic rod (49). The second electric telescopic rod (49) is provided with a lifting plate (410) at its telescopic end. Multiple third gears (412) are rotatably connected to the inner sidewall of the lifting plate (410). A third motor (411) is provided at the bottom of one of the third gears (412). The bottom of the third motor (411) is fixedly connected to the bottom of the inner sidewall of the lifting plate (410). Multiple third gears (412) are connected to a third chain (414). The tops of multiple third gears (412) are all provided with a sweeping rod (413) that penetrates the lifting plate (410). The cleaning mechanism (4) also includes two guide grooves (415) opened at the bottom of the sieve plate (121). The inner sidewall of the guide groove (415) is slidably connected to the outer sidewall of the support frame (48). Next, a second electric telescopic rod (49) is provided at the bottom of the support frame (48), and a lifting plate (410) is provided at the telescopic end of the second electric telescopic rod (49). Multiple third gears (412) are rotatably connected to the inner side wall of the lifting plate (410). A third motor (411) is provided at the bottom of one of the third gears (412). The bottom of the third motor (411) is fixedly connected to the bottom of the inner side wall of the lifting plate (410). A third chain (414) is connected to the multiple third gears (412). A cleaning rod (413) is provided through the lifting plate (410) at the top of each of the multiple third gears (412). The drying mechanism (3) includes a rotating tube (313) rotatably connected to the inner side wall of the third box (21).A drying plate (33) is provided on the outer wall of the rotating tube (313). The top of the drying plate (33) has multiple holes, and a second one-way valve (34) is fixedly connected to the inner wall of the corresponding holes. The drying mechanism (3) also includes a second air pump (310) provided on one side wall of the third housing (21). A second air transmission pipe (311) is provided at the output end of the second air pump (310). The other end of the second air transmission pipe (311) is rotatably connected to one end of the rotating tube (313). Baffles (35) are provided on both sides of the drying plate (33). A telescopic block (37) is provided at one end of the baffle (35). The drying mechanism (3) also includes a first slot (36) provided on both sides of the third housing (21). An elastic component (38) is provided at the bottom of the inner wall of the first slot (36), and a telescopic block (37) is provided at the top of the elastic component (38). One side wall of the telescopic block (37) is rotatably connected to one side wall of the baffle (35). The drying mechanism (3) also includes a second rotating shaft (31) rotatably connected to the inner wall of the third housing (21). A cam (32) is provided on the outer wall of the second rotating shaft (31). The outer wall of the cam (32) contacts the bottom side wall of the drying plate (33). The other end of the second rotating shaft (31) passes through the third housing (21) and is provided with a fourth rotating rod (39). The fourth rotating rod (39) is connected to the third rotating rod (27) by a fourth chain (312).

2. The biodegradable plastic recycling processing device according to claim 1, characterized in that: Two crushing rollers (29) are rotatably connected to the inner wall of the third housing (21). One end of each crushing roller (29) passes through the third housing (21) and is provided with a first rotating rod (22). A first air pump (211) is fixedly connected to one side wall of the third housing (21). Two first air transmission pipes (212) are provided at the output end of the first air pump (211). The other end of each first air transmission pipe (212) passes through the third housing (21) and is rotatably connected to the other end of the crushing roller (29). Multiple holes are opened on the outer side wall of each crushing roller (29), and a first one-way valve (210) is fixedly connected to the inner side wall of the corresponding hole.

3. The biodegradable plastic recycling processing device according to claim 4, characterized in that: A first gear (23) is provided on the outer wall of one of the first rotating rods (22), and a second rotating rod (24) is rotatably connected to one side wall of the third housing (21). A second gear (25) is provided on the outer wall of the second rotating rod (24). The first gear (23) and the second gear (25) mesh with each other. A first chain (26) is drivenly connected to the outer wall of the first rotating shaft (17) of one of the first rotating rods (22), and a second chain (28) is drivenly connected to the other first rotating rod (22).

4. The biodegradable plastic recycling processing device according to claim 1, characterized in that: The third box (21) is provided with a first electric telescopic rod (213) on both sides of the side wall. The telescopic end of the first electric telescopic rod (213) is provided with a moving plate (214). The side wall of the moving plate (214) is provided with a plurality of scraping teeth (215).

5. The biodegradable plastic recycling processing device according to claim 1, characterized in that: The first box (1) is provided with a frame (13) at the bottom end, and a first motor (14) is provided at the top of the frame (13). A transmission disk (16) is rotatably connected to one side wall of the first box (1). A transmission belt (15) is connected to the output end of the first motor (14) and the outer side wall of the transmission disk (16). A first rotating shaft (17) is rotatably connected to the inner side wall of the first box (1). One end of the first rotating shaft (17) passes through the first box (1) and is fixedly connected to the transmission disk (16). Multiple triangular plates (18) are provided on the outer side wall of the first rotating shaft (17). A cutter (19) is provided on the outer side wall of each of the multiple triangular plates (18). Two cutting plates (120) are provided on the inner side wall of the first box (1).

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