Solid waste environment-friendly plastic regeneration preparation equipment
By designing a three-level crushing system and dynamic anti-stick technology, the problems of low crushing quality and low efficiency of existing equipment have been solved, and efficient refining crushing and environmental protection have been achieved.
Patent Information
- Application Number
- CN202510619391.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-14
- Publication Date
- 2025-06-24
AI Technical Summary
The existing solid waste environmentally friendly plastic recycling equipment has low crushing quality and low crushing efficiency, and lacks multi-stage refinement treatment and dynamic anti-stick design.
A three-stage crushing system including crushing bins, grinding bins, screening bins and collection bins was designed. The pre-crumbing, rod-striking pounding, and roller-finishing were used. Combined with dynamic anti-stick technology, the sticking wall rate was reduced by using vibration-beating balls and Teflon coatings, and the modular flange quick disassembly structure was used to achieve rapid maintenance.
It significantly improves crushing efficiency, environmental protection and equipment reliability, improves the degree of refinement of plastic particle size, and reduces the time and cost of equipment maintenance.
Smart Images
Figure CN120190937A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of plastic recycling and treatment, and particularly to a solid waste environmental protection plastic recycling and preparation device. Background Art
[0002] Plastic processing is a complex process involving multiple links such as raw material preparation, mixing and granulation, extrusion molding, and cooling. Through these processing steps and modification methods, modified plastic products with excellent performance can be produced. The crushing of solid raw materials of modified plastics is an important link in the processing of modified plastics. The purpose of crushing is to break the raw materials into smaller particles to facilitate subsequent processing steps such as mixing, granulation, and molding.
[0003] Currently, single-stage crushing equipment is commonly used in the field of solid waste environmental protection plastic recycling, mainly including the following two categories:
[0004] Single-shaft crusher: The plastic is sheared and crushed by fixed blades on a single rotating shaft, with a simple structure and low cost.
[0005] Twin-shaft shredder: Adopts a twin-shaft reverse rotation design, suitable for processing large plastic materials, but the equipment is bulky.
[0006] The above technologies all rely on the direct contact crushing of mechanical blades or rollers, and have the following common technical characteristics:
[0007] Single crushing path: The material is only broken by a single blade strike or roller press, lacking multi-stage refinement treatment.
[0008] Lack of anti-sticking design: The inner wall of the equipment is mostly made of smooth materials, and no dynamic anti-sticking device is set. Summary of the Invention
[0009] Aiming at the deficiencies of the prior art, the present invention provides a solid waste environmental protection plastic recycling and preparation device.
[0010] To achieve the above object of solving the problems of low crushing quality and low crushing efficiency existing in the existing solid waste environmental protection plastic recycling and preparation equipment, the present invention provides the following technical solutions: A solid waste environmental protection plastic recycling and preparation equipment, including a cover plate, a crushing chamber, a grinding chamber, a sieving chamber and a material receiving chamber. The cover plate is disc-shaped, with a hole in the middle for movably installing a first shaft. There is a hole in the upper part of the cover plate and a feed pipe is fixedly installed. A cap is movably connected above the feed pipe. Below the cover plate is the crushing chamber, and below the crushing chamber is the grinding chamber. A first flange is fixedly installed between the crushing chamber and the grinding chamber, and the crushing chamber and the grinding chamber are fixedly connected through the first flange. Below the grinding chamber is the sieving chamber. A second flange is fixedly installed between the grinding chamber and the sieving chamber, and the grinding chamber and the sieving chamber are fixedly connected through the second flange. Screws are provided between the first flange and the second flange, and both the first flange and the second flange are fixed by screws. Below the sieving chamber is the material receiving chamber.
[0011] Preferably, in the middle of the inside of the crushing chamber is the first shaft. Around the first shaft in the crushing chamber are provided vibration rods, lower crushing rods and upper crushing rods. The vibration rods are fixedly connected to the first shaft. The lower crushing rods and the upper crushing rods are cylindrical and evenly provided with ten crushing cones one on both sides. The crushing cones one are hexagonal pyramids, and the lower crushing rods and the upper crushing rods are fixedly connected to the crushing cones one.
[0012] Preferably, below one end of the lower crushing rod close to the first shaft is fixedly installed a stirring rod. On the side of the stirring rod are fixedly installed two crushing cones two. The crushing cones two are hexagonal pyramids. Below the crushing cones two is provided a first inverted hopper, and the first inverted hopper is fixedly installed on the inner side of the bottom of the crushing chamber.
[0013] Preferably, the vibration rods and the upper crushing rods are located above the lower crushing rods. There are two vibration rods and two upper crushing rods respectively and they are symmetrically distributed. There are four lower crushing rods in total and they are evenly distributed.
[0014] Preferably, inside the grinding chamber is provided a grinding disc. The grinding disc is annular and fixedly installed on the grinding chamber. The inner ring surface of the grinding disc is provided with tooth patterns. In the middle of the grinding disc is provided a grinder. Above the grinder is fixedly installed a material distributing table. The material distributing table is located below the first inverted hopper. The inner diameter of the lower part of the first inverted hopper is larger than the outer diameter of the upper part of the material distributing table. The upper part of the material distributing table is fixedly connected to the first shaft. Four grinding rollers are evenly provided on the grinder.
[0015] Preferably, the grinding rollers are cylindrical. In the middle of the inner ring of the grinding rollers is movably installed a second shaft. At both ends of the second shaft are provided third shafts. One end of the third shaft is fixedly connected to the second shaft, and the other end of the third shaft is fixedly installed with a baffle. A spring is provided between the second shaft and the baffle and sleeved on the third shaft.
[0016] Preferably, inside the sieving chamber is provided a sealing ring. The sealing ring is located below the grinder. The sealing ring is annular. The inner ring of the sealing ring is connected to a second inverted hopper. Below the second inverted hopper is fixedly installed a sieve mesh.
[0017] Preferably, the material receiving bin is a cylindrical bin with an open top, and the inner diameter of the material receiving bin is larger than the outer diameter of the sieving bin.
[0018] Preferably, the vibrating rod is an elastic rod. There is a first sieve plate above the vibrating rod, and first sieve holes are evenly arranged on the first sieve plate. There is a second sieve plate below the vibrating rod, and second sieve holes are evenly arranged on the second sieve plate. The diameter of the first sieve holes is larger than that of the second sieve holes. The central positions of the first sieve plate and the second sieve plate are movably connected by a first shaft. The edges of the first sieve plate and the second sieve plate are fixedly installed on the inner side of the pulverizing bin. Convex blocks are evenly arranged at the position between the first sieve plate and the second sieve plate on the inner side of the pulverizing bin. There are two vibrating balls between the first sieve plate and the second sieve plate.
[0019] Compared with the prior art, the present invention provides a solid waste environmental protection plastic regeneration preparation device, which has the following beneficial effects:
[0020] 1. For this solid waste environmental protection plastic regeneration preparation device, through a three-stage pulverization system, namely vibrating pre-crushing, rod impact coarse crushing, and roller fine grinding, the plastic particle size is controlled to small particles. Combined with the dynamic anti-sticking technology, using vibrating balls and Teflon coating, the wall sticking rate is reduced. With the modular flange quick-release structure, rapid maintenance is achieved, significantly improving the pulverization efficiency, environmental protection performance, and equipment reliability.
[0021] 2. For this solid waste environmental protection plastic regeneration preparation device, by setting the vibrating rod, the vibrating rod rotates along the axis of the first shaft. The vibrating rod is an elastic rod, and when rotating, it will make the vibrating balls between the first sieve plate and the second sieve plate impact back and forth, thereby contributing to the pulverization of raw materials and reducing the adhesion of materials on the sieve plate.
[0022] 3. For this solid waste environmental protection plastic regeneration preparation device, by setting the lower pulverizing rod and the upper pulverizing rod, when the raw materials are poured into the pulverizing bin from the feed pipe, the vibrating rod and the upper pulverizing rod above the lower pulverizing rod will break the raw materials. The pulverizing impact cone on the upper pulverizing rod will strike the raw materials to break them. When the raw materials fall downward to the position where the lower pulverizing rod is located, the pulverizing impact cone on the lower pulverizing rod will break the raw materials again, enhancing the pulverization effect and improving the pulverization quality.
[0023] 4. For this solid waste environmental protection plastic regeneration preparation device, by setting the stirring rod, when the raw materials fall downward along the first inverted hopper to the middle of the first inverted hopper, the pulverizing impact cone on the stirring rod below the lower pulverizing rod will disperse the raw materials to facilitate their falling, improving the pulverization efficiency.
[0024] 5. For this solid waste environmental protection plastic regeneration preparation device, by setting the material distribution table, the raw materials fall from the hole below the first inverted hopper onto the upper part of the material distribution table. The material distribution table is fixedly connected to the first shaft, so when the first shaft rotates, it will drive the material distribution table to rotate. The raw materials falling on the material distribution table will be scattered between the grinder and the grinding disc below the material distribution table, assisting in grinding and improving the grinding efficiency.
[0025] 6. The solid waste environmental protection plastic regeneration and preparation equipment drives the grinding drum and grinding disc on the grinder to roll and rub by the rotation of the grinder, so as to grind the raw materials between the grinder and the grinder, further improving the crushing quality.
[0026] 7. The solid waste environmental protection plastic regeneration and preparation equipment is provided with a grinding drum. During grinding, due to the different particle sizes of the materials, the grinding drum will extrude the materials, so that both ends of the grinding drum will shift, driving both ends of the second shaft to shift. The springs on the second shaft will reset the shift and make the grinding drum grind the materials. The third shaft and the baffle are located inside the grinder. The third shaft stabilizes the direction of the second shaft, and the baffle prevents the third shaft and the second shaft from falling off, so that the grinding drum can better grind the materials, improving the crushing adaptability to the materials and facilitating the long-term use of the equipment.
[0027] 8. The solid waste environmental protection plastic regeneration and preparation equipment is provided with a first flange and a second flange. When maintenance and repair are required inside the equipment, the inside of the crushing chamber can be repaired by removing the screws on the first flange, the inside of the grinding chamber and the sieving chamber can be repaired by removing the screws on the second flange, and the grinding disc can be taken out and the devices installed on it can be repaired by removing the cover plate. Brief Description of the Drawings
[0028] Figure 1 It is a schematic diagram of the main structure of the present invention;
[0029] Figure 2 It is a schematic diagram of the internal structure of the present invention;
[0030] Figure 3 It is a schematic diagram of the structure of the crushing chamber of the present invention;
[0031] Figure 4 It is a schematic diagram of the internal structure of the crushing chamber of the present invention;
[0032] Figure 5 It is a schematic diagram of the structure of the crushing rod of the present invention;
[0033] Figure 6 It is a schematic diagram of the structure of the grinding chamber of the present invention;
[0034] Figure 7 It is a schematic diagram of the structure of the grinder of the present invention;
[0035] Figure 8 It is a schematic diagram of the structure of the grinding drum of the present invention;
[0036] Figure 9 It is a schematic diagram of the internal structure of the sieving chamber of the present invention;
[0037] Figure 10 It is a schematic diagram of the structure of the sieve plate of the present invention
[0038] In the figure: 10, cover plate; 11, cap; 12, feed pipe; 13, screw; 20, crushing chamber; 21, first flange; 22, shaft one; 23, vibrating rod; 24, lower crushing rod; 25, upper crushing rod; 26, stirring rod; 27, first inverted hopper; 28, first crushing cone; 29, second crushing cone; 30, grinding chamber; 31, second flange; 32, material distribution table; 33, grinding disc; 34, grinder; 35, grinding roller; 36, shaft two; 37, shaft three; 38, spring; 39, baffle; 40, sieving chamber; 41, sealing ring; 42, second inverted hopper; 43, sieve mesh; 50, receiving bin; 51, first sieve plate; 52, second sieve plate; 53, first sieve hole; 54, second sieve hole; 55, vibrating ball. Specific implementation mode
[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0040] Example 1, please refer to Figure 1-4 , a solid waste environmental protection plastic regeneration preparation device.
[0041] It includes a cover plate 10, a crushing chamber 20, a grinding chamber 30, a sieving chamber 40 and a receiving bin 50. The cover plate 10 is disc-shaped, with a hole in the middle for movably installing a shaft one 22. There is a hole in the upper part of the cover plate 10 and a feed pipe 12 is fixedly installed. A cap 11 is movably connected above the feed pipe 12. Below the cover plate 10 is the crushing chamber 20, and below the crushing chamber 20 is the grinding chamber 30. A first flange 21 is fixedly installed between the crushing chamber 20 and the grinding chamber 30. The crushing chamber 20 and the grinding chamber 30 are fixedly connected through the first flange 21. Below the grinding chamber 30 is the sieving chamber 40. A second flange 31 is fixedly installed between the grinding chamber 30 and the sieving chamber 40. The grinding chamber 30 and the sieving chamber 40 are fixedly connected through the second flange 31. A screw 13 is provided between the first flange 21 and the second flange 31. Both the first flange 21 and the second flange 31 are fixed by the screw 13. Below the sieving chamber 40 is the receiving bin 50.
[0042] In the middle of the crushing chamber 20 is the shaft one 22. Around the shaft one 22 in the crushing chamber 20 are provided a vibrating rod 23, a lower crushing rod 24 and an upper crushing rod 25. The vibrating rod 23 is fixedly connected to the shaft one 22. The lower crushing rod 24 and the upper crushing rod 25 are cylindrical and are evenly provided with ten first crushing cones 28 on both sides. The first crushing cone 28 is a hexagonal pyramid. The lower crushing rod 24 and the upper crushing rod 25 are fixedly connected to the first crushing cone 28.
[0043] A stirring rod 26 is fixedly installed below one end of the lower crushing rod 24 close to the first shaft 22. Two crushing cones II 29 are fixedly installed on the side of the stirring rod 26. The crushing cone II 29 is a hexagonal pyramid. A first inverted hopper 27 is arranged below the crushing cone II 29. The first inverted hopper 27 is fixedly installed on the inner side of the bottom of the crushing chamber 20.
[0044] The vibrating rod 23 and the upper crushing rod 25 are located above the lower crushing rod 24. There are two vibrating rods 23 and two upper crushing rods 25 respectively, and they are both symmetrically distributed. There are four lower crushing rods 24 in total and they are evenly distributed.
[0045] Example two, on the basis of example one, please refer to Figures 4-8 。
[0046] A grinding disc 33 is arranged inside the grinding chamber 30. The grinding disc 33 is annular and fixedly installed on the grinding chamber 30. Tooth patterns are arranged on the inner ring surface of the grinding disc 33. A grinder 34 is arranged in the middle of the grinding disc 33. A material distribution table 32 is fixedly installed above the grinder 34. The material distribution table 32 is adjusted to be a conical frustum to ensure that the material smoothly falls into the grinding area. The material distribution table 32 is located below the first inverted hopper 27. The inner diameter of the lower part of the first inverted hopper 27 is larger than the outer diameter of the upper part of the material distribution table 32. The upper part of the material distribution table 32 is fixedly connected to the first shaft 22. Four grinding rollers 35 are evenly arranged on the grinder 34.
[0047] The grinding roller 35 is cylindrical. A second shaft 36 is movably installed in the middle of the inner ring of the grinding roller 35. Shafts 37 are arranged at both ends of the second shaft 36. One end of the shaft 37 is fixedly connected to the second shaft 36. A baffle 39 is fixedly installed at the other end of the shaft 37. A spring 38 is arranged between the second shaft 36 and the baffle 39 and sleeved on the shaft 37.
[0048] Example three, on the basis of example two, please refer to Figures 9-10 。
[0049] A sealing ring 41 is arranged inside the sieving chamber 40. The sealing ring 41 is located below the grinder 34. The sealing ring 41 is annular. A second inverted hopper 42 is connected to the inner ring of the sealing ring 41. A sieve mesh 43 is fixedly installed below the second inverted hopper 42.
[0050] The material receiving bin 50 is cylindrical and has an open top. The inner diameter of the material receiving bin 50 is larger than the outer diameter of the sieving chamber 40.
[0051] Working principle:
[0052] The first step: The vibrating rod 23 is an elastic rod. Above the vibrating rod 23, there is a first sieve plate 51. The first sieve plate 51 is evenly provided with first sieve holes 53. Below the vibrating rod 23, there is a second sieve plate 52. The second sieve plate 52 is evenly provided with second sieve holes 54. The diameter of the first sieve holes 53 is larger than that of the second sieve holes 54. The center positions of the first sieve plate 51 and the second sieve plate 52 are movably connected by a first shaft 22. The edges of the first sieve plate 51 and the second sieve plate 52 are fixedly installed inside the pulverizing bin 20. Inside the pulverizing bin 20, between the first sieve plate 51 and the second sieve plate 52, there are evenly arranged bumps. Between the first sieve plate 51 and the second sieve plate 52, there are two vibrating balls 55. During use, remove the cap 11 from the feed pipe 12, pour the raw materials into the pulverizing bin 20 from the feed pipe 12, and drive the rotation by connecting the first shaft 22 in the middle of the cover plate 10 to an external driving device. When the first shaft 22 rotates, it drives the vibrating rod 23, the lower pulverizing rod 24, the upper pulverizing rod 25, and the material distributing table 32 to rotate. When the first shaft 22 drives the vibrating rod 23, the lower pulverizing rod 24, and the upper pulverizing rod 25 to rotate, the vibrating rod 23 and the upper pulverizing rod 25 above the lower pulverizing rod 24 crush the raw materials. The vibrating rod 23 will rotate along the axis of the first shaft 22. Since the vibrating rod 23 is an elastic rod, during rotation, it will cause the vibrating balls 55 between the first sieve plate 51 and the second sieve plate 52 to strike back and forth, so that the raw materials fall down without sticking to the wall and piling up. The pulverizing cones 28 on the upper pulverizing rod 25 will strike the raw materials to crush them. When the raw materials fall down to the position where the lower pulverizing rod 24 is located, the pulverizing cones 28 on the lower pulverizing rod 24 will crush the raw materials again and fall onto the first inverted hopper 27, and fall downward along the first inverted hopper 27 to the middle of the first inverted hopper 27. At this time, the pulverizing cones 29 on the stirring rod 26 below the lower pulverizing rod 24 will disperse the raw materials to facilitate their falling.
[0053] The second step: When the raw materials fall from the first inverted hopper 27 into the grinding bin 30, the raw materials fall from the holes below the first inverted hopper 27 above the material distributing table 32. The material distributing table 32 is fixedly connected to the first shaft 22. Then, when the first shaft 22 rotates, it will drive the material distributing table 32 to rotate. The raw materials falling on the material distributing table 32 will be scattered between the grinder 34 and the grinding disc 33 below the material distributing table 32. When the material distributing table 32 rotates, it will drive the grinder 34 to rotate. The rotation of the grinder 34 will drive the grinding drum 35 on the grinder 34 to perform rolling friction with the grinding disc 33, so as to grind the raw materials between the grinder 34 and the grinder 34. During grinding, due to the different particle sizes of the materials, the grinding drum 35 will extrude the materials, so that both ends of the grinding drum 35 will shift, driving both ends of the second shaft 36 to shift. The springs 38 on the second shaft 36 will reset the shift and enable the grinding drum 35 to grind the materials. The third shaft 37 and the baffle 39 are located inside the grinder 34. The third shaft 37 makes the direction of the second shaft 36 stable, and the baffle 39 maintains the third shaft 37 and the second shaft 36 from falling off, so that the grinding drum 35 can better grind the materials.
[0054] Step 3: The ground material falls from between the grinder 34 and the grinding disc 33 into the second inverted hopper 42, and after being screened by the screen 43, it falls into the material receiving bin 50 to complete screening and collection.
[0055] Step 4: When maintenance and repair of the interior of the equipment are required, the interior of the crushing bin 20 can be repaired by removing the screws 13 on the first flange 21, the interiors of the grinding bin 30 and the screening bin 40 can be repaired by removing the screws 13 on the second flange 31, and the grinding disc 33 can be removed by removing the cover plate 10 and the devices installed thereon can be repaired.
[0056] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A solid waste environmentally friendly plastic recycling and preparation device, comprising a cover plate (10), a crushing bin (20), a grinding bin (30), a screening bin (40) and a material receiving bin (50), characterized in that: The cover plate (10) is disc-shaped, the middle of the cover plate (10) is opened with a shaft (22) movably mounted thereon, the upper part of the cover plate (10) is opened with a feed pipe (12) fixedly mounted thereon, a cover cap (11) movably connected to the upper part of the feed pipe (12), a crushing bin (20) is located below the cover plate (10), a grinding bin (30) is located below the crushing bin (20), a first flange (21) is fixedly mounted between the crushing bin (20) and the grinding bin (30), and the crushing bin (20) and the grinding bin (30) are connected by a first flange. The first flange (21) is fixedly connected to the second flange (21), the screening bin (40) is located below the grinding bin (30), a second flange (31) is fixedly installed between the grinding bin (30) and the screening bin (40), the grinding bin (30) and the screening bin (40) are fixedly connected via the second flange (31), a screw (13) is arranged between the first flange (21) and the second flange (31), the first flange (21) and the second flange (31) are both fixed via the screws (13), and a material receiving bin (50) is located below the screening bin (40).
2. The solid waste environmentally friendly plastic recycling and preparation equipment according to claim 1 is characterized by: The center of the crushing bin (20) is an axis (22), which is located in the crushing bin (20) and is surrounded by a rapping rod (23), a lower crushing rod (24) and an upper crushing rod (25), the rapping rod (23) is fixedly connected to the axis (22), the lower crushing rod (24) and the upper crushing rod (25) are cylindrical and have ten crushing cones (28) evenly arranged on both sides, the crushing cones (28) are hexagonal pyramids, and the lower crushing rod (24) and the upper crushing rod (25) are fixedly connected to the crushing cones (28).
3. The solid waste environmentally friendly plastic recycling and preparation equipment according to claim 2 is characterized by: A stirring rod (26) is fixedly installed below one end of the lower crushing rod (24) near the first shaft (22), and two crushing cones (29) are fixedly installed on the side of the stirring rod (26). The crushing cones (29) are hexagonal cones, and a first inverted bucket (27) is arranged below the crushing cones (29). The first inverted bucket (27) is fixedly installed on the inner side of the bottom of the crushing bin (20).
4. The solid waste environmentally friendly plastic recycling and preparation equipment according to claim 3 is characterized by: The rapping rod (23) and the upper crushing rod (25) are located above the lower crushing rod (24). There are two rapping rods (23) and two upper crushing rods (25) each and they are symmetrically distributed. There are four lower crushing rods (24) in total and they are evenly distributed.
5. The solid waste environmentally friendly plastic recycling and preparation equipment according to claim 4 is characterized by: A grinding disc (33) is provided inside the grinding bin (30). The grinding disc (33) is annular and fixedly mounted on the grinding bin (30). The inner ring surface of the grinding disc (33) is provided with tooth patterns. A grinder (34) is provided in the middle of the grinding disc (33). A material distribution platform (32) is fixedly mounted above the grinder (34). The material distribution platform (32) is located below the first inverted bucket (27). The inner diameter below the first inverted bucket (27) is larger than the outer diameter above the material distribution platform (32). The upper part of the material distribution platform (32) is fixedly connected to the shaft 1 (22). Four grinding rollers (35) are evenly arranged on the grinder (34).
6. The solid waste environmentally friendly plastic recycling and preparation equipment according to claim 5 is characterized by: The grinding drum (35) is cylindrical, and a second shaft (36) is movably installed in the middle of the inner ring of the grinding drum (35). A third shaft (37) is provided at both ends of the second shaft (36). One end of the third shaft (37) is fixedly connected to the second shaft (36), and a baffle (39) is fixedly installed at the other end of the third shaft (37). A spring (38) is provided between the second shaft (36) and the baffle (39) and is sleeved on the third shaft (37).
7. The solid waste environmentally friendly plastic recycling and preparation equipment according to claim 6 is characterized by: A sealing ring (41) is provided inside the screening bin (40). The sealing ring (41) is located below the grinder (34). The sealing ring (41) is in a circular ring shape. The inner ring of the sealing ring (41) is connected to a second inverted bucket (42). A screen (43) is fixedly installed below the second inverted bucket (42).
8. The solid waste environmentally friendly plastic recycling and preparation equipment according to claim 7 is characterized by: The material receiving bin (50) is cylindrical and has a cover on the top, and the inner diameter of the material receiving bin (50) is larger than the outer diameter of the screening bin (40).
9. The solid waste environmentally friendly plastic recycling and preparation equipment according to claim 8, characterized in that: The rapping rod (23) is an elastic rod. A sieve plate (51) is arranged above the rapping rod (23). The sieve plate (51) is evenly provided with sieve holes (53). A sieve plate (52) is arranged below the rapping rod (23). The sieve plate (52) is evenly provided with sieve holes (54). The diameter of the sieve holes (53) is larger than the diameter of the sieve holes (54). The sieve plates (51) and the sieve plates (52) are movably connected to the shaft (22) at their centers. The edges of the sieve plates (51) and the sieve plates (52) are fixedly mounted on the inner side of the crushing bin (20). The inner side of the crushing bin (20) is evenly provided with protrusions between the sieve plates (51) and the sieve plates (52). Two rapping balls (55) are arranged between the sieve plates (51) and the sieve plates (52).