Multi-material plastic sorting device
By designing the material distribution and pushing components, the device achieves stable and continuous operation of multi-material plastic sorting equipment, solves the problem of clogging by mixed plastic fragments, and improves sorting efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU GUANGCHUANG ECO-TECH CO LTD
- Filing Date
- 2025-08-31
- Publication Date
- 2026-07-24
AI Technical Summary
In existing technologies for sorting multi-material plastics, the crushed mixed plastic fragments are prone to plastic deformation due to stress concentration at the tooth tips. After being partially embedded in the tooth gaps, they are squeezed and entangled by subsequent materials, causing blockages and affecting continuous sorting efficiency.
The design employs a combination of material distribution and pushing components. By controlling the quantitative feeding of the control plate and the intermittent pushing of the push rod, plastic fragments are prevented from plastically deforming and clogging on the material distribution plate.
This ensures the stability and continuity of plastic sorting, prevents clogging, and improves sorting efficiency.
Smart Images
Figure CN224545034U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastic sorting technology, specifically a multi-material plastic sorting device. Background Technology
[0002] With the widespread use of plastic products in packaging, electronics, automobiles, construction, and other fields, the amount of waste plastic has increased dramatically. Due to the significant differences in the physical and chemical properties of different plastics (such as PET, HDPE, PVC, PP, PS, etc.), direct recycling of mixed plastics can lead to a decline in the performance of recycled materials, affecting their reuse value. Therefore, efficient and precise sorting of plastics of different materials is crucial in the plastic recycling process.
[0003] According to the patent CN223173356U, a plastic material sorting device includes a frame, a conveying unit, a feeding unit, several sorting cylinders, an identification unit, and an air blowing unit. The conveying unit is mounted on the frame and has an inlet and an outlet. The feeding unit can feed the plastic to be sorted into the inlet. The conveying unit transports the plastic towards the outlet and outputs it through the outlet. The identification unit is located at the outlet and can identify the plastic material output from the outlet. The air blowing unit is located above each sorting cylinder. Based on the identification information identified by the identification unit, plastics of different materials are blown to different sorting cylinders, thereby realizing the sorting of plastics of different materials. Since the feeding unit is located above the inlet, and the material can fall into the inlet of the conveying unit by its own gravity, the energy consumption required for the plastic to enter the inlet can be effectively reduced.
[0004] Currently, in the sorting of multi-material plastics, existing technologies introduce a uniform toothed plate structure to balance material flow uniformity and noise control. This structure limits material flow by fixing the tooth gaps. However, in practical applications, when crushed mixed plastic fragments (especially flexible materials) pass through the toothed plate, they are prone to plastic deformation due to stress concentration at the tooth tips. These fragments become partially embedded in the tooth gaps and are then squeezed and entangled by subsequent materials, leading to blockages and affecting continuous sorting efficiency. Utility Model Content
[0005] The purpose of this invention is to provide a multi-material plastic sorting device to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a multi-material plastic sorting device, comprising a frame, a conveying unit fixedly installed at the top of the frame, a sorting cylinder installed at the bottom of the conveying unit, a feeding hopper provided above the conveying unit, a material distribution component provided inside the feeding hopper, a material leveling plate fixedly installed at the bottom of the feeding hopper, and a material pushing component provided on one side of the material leveling plate;
[0007] The material distribution assembly includes a control board disposed inside the feeding hopper. The control board is evenly mounted in a circular array on the outer wall of the first rotating shaft. The first rotating shaft is rotatably mounted on the inner wall of the feeding hopper. A first gear is fixedly mounted on one end of the first rotating shaft. A second gear is meshed with one side of the first gear. A second rotating shaft is fixedly mounted inside the second gear. A motor is mounted on one end of the second rotating shaft. The motor is mounted on one side of the feeding hopper.
[0008] As a further preferred embodiment of this technical solution, the tooth blocks on the outer wall of the second gear are distributed in a fan shape.
[0009] As a further preferred embodiment of this technical solution, the pushing assembly includes a mounting plate disposed on one side of the uniform material plate, and push rods are uniformly mounted on the side of the mounting plate close to the uniform material plate.
[0010] As a further preferred embodiment of this technical solution, both ends of the mounting plate are fixedly connected to connecting shafts, and both connecting shafts are slidably installed at the bottom of the feeding hopper. A reciprocating screw is threadedly connected to the inner wall of one of the connecting shafts. A second bevel gear is fixedly installed at one end of the reciprocating screw. A first bevel gear is meshed with one side of the second bevel gear. A third rotating shaft is fixedly installed on one side of the first bevel gear. The third rotating shaft is located below the second rotating shaft, and the third rotating shaft and the second rotating shaft are connected by a pulley set.
[0011] As a further preferred embodiment of this technical solution, the push rod is slidably connected to the uniform plate.
[0012] As a further preferred embodiment of this technical solution, one end of the push rod is slidably mounted inside the mounting plate, and a spring is provided between the push rod and the mounting plate.
[0013] As a further preferred embodiment of this technical solution, a fixing plate is slidably connected to the outer wall of the push rod, and the fixing plate is fixedly installed at the bottom of the feeding hopper.
[0014] As a further preferred embodiment of this technical solution, the fixing plate is inclined downward on the side near the uniform material plate.
[0015] This utility model provides a multi-material plastic sorting device, which has the following beneficial effects:
[0016] (1) Through the setting of the material distribution component, the plastic to be sorted is first put into the feeding hopper during operation. A certain amount of plastic is supported between every two control plates. Then, the motor is started to drive the second rotating shaft to rotate. The rotation of the second rotating shaft drives the rotation of the second gear, the rotation of the second gear drives the rotation of the first gear, the rotation of the first gear drives the rotation of the first rotating shaft, and the rotation of the first rotating shaft drives the control plate to rotate. When the control plate rotates, the plastic is dispersed and slid into the conveying unit through the material equalization plate. Finally, the plastic is sorted through the air blowing unit in the sorting cylinder. The device uses the control plate to feed the plastic in a quantitative manner, which prevents the mixed plastic fragments from undergoing plastic deformation when passing through the material equalization plate, causing blockage and ultimately affecting the continuous sorting efficiency. This ensures the stability of the sorting.
[0017] (2) By setting up the material pushing component, the rotation of the second rotating shaft drives the rotation of the third rotating shaft through the belt pulley group during operation. The rotation of the third rotating shaft drives the rotation of the first bevel gear, the rotation of the first bevel gear drives the rotation of the second bevel gear, the rotation of the second bevel gear drives the rotation of the reciprocating screw, and the rotation of the reciprocating screw drives the connecting shaft to move back and forth. The movement of the connecting shaft drives the movement of the mounting plate, and the movement of the mounting plate drives the movement of the push rod, intermittently pushing the plastic on the inner wall of the uniform plate inward, further preventing the problem of blockage caused by mixed plastic fragments. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a schematic cross-sectional view of the feeding hopper structure of this utility model;
[0020] Figure 3 This is a schematic cross-sectional view of the material leveling plate and fixing plate of this utility model;
[0021] Figure 4 This is a schematic diagram of the control panel structure of this utility model.
[0022] In the diagram: 1. Frame; 2. Conveying unit; 3. Feed hopper; 4. Sorting cylinder; 5. Equalizing plate; 6. Control panel; 7. First rotating shaft; 8. First gear; 9. Second gear; 10. Second rotating shaft; 11. Motor; 12. Pulley assembly; 13. Third rotating shaft; 14. First bevel gear; 15. Second bevel gear; 16. Reciprocating screw; 17. Connecting shaft; 18. Mounting plate; 19. Push rod; 20. Spring; 21. Fixing plate. Detailed Implementation
[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0024] This utility model provides a technical solution: such as Figures 1 to 4 As shown, in this embodiment, a multi-material plastic sorting device includes a frame 1, a conveying unit 2 is fixedly installed at the top of the frame 1, a sorting cylinder 4 is installed at the bottom of the conveying unit 2, a feeding hopper 3 is provided above the conveying unit 2, a material distribution component is provided inside the feeding hopper 3, a material leveling plate 5 is fixedly installed at the bottom of the feeding hopper 3, and a material pushing component is provided on one side of the material leveling plate 5.
[0025] The material distribution assembly includes a control board 6 disposed inside the feeding hopper 3. The control board 6 is evenly installed in a circular array on the outer wall of the first rotating shaft 7. The first rotating shaft 7 is rotatably installed on the inner wall of the feeding hopper 3. A first gear 8 is fixedly installed at one end of the first rotating shaft 7. A second gear 9 is meshed with one side of the first gear 8. A second rotating shaft 10 is fixedly installed inside the second gear 9. A motor 11 is installed at one end of the second rotating shaft 10. The motor 11 is installed on one side of the feeding hopper 3.
[0026] The existing patent CN223173356U discloses a plastic material sorting device. This patent discloses the frame 1, conveying unit 2, feeding hopper 3, sorting cylinder 4 and uniform plate 5 proposed in this application. The technical means will not be described in detail here.
[0027] By setting up the material distribution component, during operation, the plastic to be sorted is first put into the feeding hopper 3. A certain amount of plastic is received between every two control plates 6. Then, the motor 11 is started to drive the second rotating shaft 10 to rotate. The rotation of the second rotating shaft 10 drives the rotation of the second gear 9. The rotation of the second gear 9 drives the rotation of the first gear 8. The rotation of the first gear 8 drives the rotation of the first rotating shaft 7. The rotation of the first rotating shaft 7 drives the control plate 6 to rotate. When the control plate 6 rotates, the plastic is dispersed downwards and then slid into the conveying unit 2 through the material equalization plate 5. Finally, the plastic is sorted by the air blowing unit in the sorting cylinder 4.
[0028] This device uses a control panel 6 to feed plastic in a quantitative manner, preventing the mixed plastic fragments from undergoing plastic deformation when passing through the equalization plate 5, which could lead to blockage and ultimately affect the continuous sorting efficiency, thus ensuring the stability of the sorting process.
[0029] like Figure 2 and Figure 4 As shown, the tooth blocks on the outer wall of the second gear 9 are distributed in a fan shape.
[0030] When the second gear 9 rotates, it drives the outer wall tooth block to mesh with the first gear 8, thereby driving the control plate 6 to rotate and discharge material, so that the device discharges material intermittently and prevents excessive continuous discharge.
[0031] The rotation angle of the first gear 8 is controlled by the number of tooth blocks on the outer wall of the second gear 9, so that each time the first gear 8 rotates, it drives each pair of control plates 6 to rotate by a certain angle, thereby achieving quantitative control.
[0032] like Figures 1 to 4 As shown, the feeding assembly includes a mounting plate 18 disposed on one side of the uniform material plate 5, and push rods 19 are uniformly installed on the side of the mounting plate 18 near the uniform material plate 5.
[0033] Both ends of the mounting plate 18 are fixedly connected to connecting shafts 17. Both connecting shafts 17 are slidably installed at the bottom of the feeding hopper 3. The inner wall of one of the connecting shafts 17 is threadedly connected to a reciprocating screw 16. A second bevel gear 15 is fixedly installed at one end of the reciprocating screw 16. A first bevel gear 14 is meshed with one side of the second bevel gear 15. A third rotating shaft 13 is fixedly installed on one side of the first bevel gear 14. The third rotating shaft 13 is located below the second rotating shaft 10. The third rotating shaft 13 and the second rotating shaft 10 are connected by a pulley set 12.
[0034] With the pusher assembly in place, during operation, the rotation of the second rotating shaft 10 drives the rotation of the third rotating shaft 13 via the pulley set 12. The rotation of the third rotating shaft 13 drives the rotation of the first bevel gear 14, which in turn drives the rotation of the second bevel gear 15. The rotation of the second bevel gear 15 drives the rotation of the reciprocating screw 16. When the reciprocating screw 16 rotates, it drives the connecting shaft 17 to move back and forth. The movement of the connecting shaft 17 drives the movement of the mounting plate 18, which in turn drives the movement of the push rod 19. This intermittently pushes the plastic on the inner wall of the equalizing plate 5 inward, further preventing the problem of blockage caused by mixed plastic fragments.
[0035] like Figure 2 As shown, push rod 19 is slidably connected to uniform plate 5.
[0036] like Figure 4 As shown, one end of the push rod 19 is slidably mounted inside the mounting plate 18, and a spring 20 is provided between the push rod 19 and the mounting plate 18.
[0037] The elastic potential energy of spring 20 allows push rod 19 to adapt dynamically, preventing it from jamming.
[0038] like Figures 1 to 4 As shown, a fixing plate 21 is slidably connected to the outer wall of the push rod 19, and the fixing plate 21 is fixedly installed at the bottom of the feeding hopper 3.
[0039] When the push rod 19 is embedded in the material leveling plate 5 and moves away from the material leveling plate 5, the plastic attached to the outer wall of the push rod 19 can be scraped off by the fixing plate 21.
[0040] like Figure 3As shown, the fixing plate 21 is inclined downward on the side near the uniform plate 5.
[0041] This utility model provides a multi-material plastic sorting device, the specific working principle of which is as follows:
[0042] During operation, the plastic to be sorted is first put into the feeding hopper 3. A certain amount of plastic is received between every two control plates 6. Then, the motor 11 is started to drive the second rotating shaft 10 to rotate. The rotation of the second rotating shaft 10 drives the rotation of the second gear 9. The rotation of the second gear 9 drives the rotation of the first gear 8. The rotation of the first gear 8 drives the rotation of the first rotating shaft 7. The rotation of the first rotating shaft 7 drives the control plate 6 to rotate. When the control plate 6 rotates, the plastic is dispersed downwards and then slid into the conveying unit 2 through the equalization plate 5. Finally, the plastic is sorted by the air blowing unit in the sorting cylinder 4.
[0043] Simultaneously, the rotation of the second rotating shaft 10 drives the rotation of the third rotating shaft 13 via the pulley set 12. The rotation of the third rotating shaft 13 drives the rotation of the first bevel gear 14, which in turn drives the rotation of the second bevel gear 15. The rotation of the second bevel gear 15 drives the rotation of the reciprocating screw 16. When the reciprocating screw 16 rotates, it drives the connecting shaft 17 to move back and forth. The movement of the connecting shaft 17 drives the movement of the mounting plate 18, which in turn drives the movement of the push rod 19. This intermittently pushes the plastic on the inner wall of the equalizing plate 5 inward, further preventing the problem of blockage caused by mixed plastic fragments.
[0044] The spring 20's elastic potential energy allows the push rod 19 to dynamically adapt and prevent jamming. When the push rod 19 is embedded in the uniform material plate 5 and moves away from the uniform material plate 5, the plastic attached to the outer wall of the push rod 19 can be scraped off by the fixing plate 21.
[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A multi-material plastic sorting device, comprising a frame (1), characterized in that: A conveying unit (2) is fixedly installed at the top of the frame (1), a sorting cylinder (4) is installed at the bottom of the conveying unit (2), a feeding hopper (3) is provided above the conveying unit (2), a material distribution component is provided inside the feeding hopper (3), a material leveling plate (5) is fixedly installed at the bottom of the feeding hopper (3), and a material pushing component is provided on one side of the material leveling plate (5). The material distribution assembly includes a control board (6) disposed inside the feeding hopper (3). The control board (6) is evenly arranged in a ring array on the outer wall of the first rotating shaft (7). The first rotating shaft (7) is rotatably mounted on the inner wall of the feeding hopper (3). A first gear (8) is fixedly mounted on one end of the first rotating shaft (7). A second gear (9) is meshed with one side of the first gear (8). A second rotating shaft (10) is fixedly mounted inside the second gear (9). A motor (11) is mounted on one end of the second rotating shaft (10). The motor (11) is mounted on one side of the feeding hopper (3).
2. The multi-material plastic sorting device according to claim 1, characterized in that: The teeth on the outer wall of the second gear (9) are distributed in a fan shape.
3. The multi-material plastic sorting device according to claim 1, characterized in that: The pushing assembly includes a mounting plate (18) disposed on one side of the uniform material plate (5), and push rods (19) are uniformly installed on the side of the mounting plate (18) close to the uniform material plate (5). Both ends of the mounting plate (18) are fixedly connected to connecting shafts (17). Both connecting shafts (17) are slidably installed at the bottom of the feeding hopper (3). One of the connecting shafts (17) is threadedly connected to a reciprocating screw (16). A second bevel gear (15) is fixedly installed at one end of the reciprocating screw (16). A first bevel gear (14) is meshed with one side of the second bevel gear (15). A third rotating shaft (13) is fixedly installed on one side of the first bevel gear (14). The third rotating shaft (13) is located below the second rotating shaft (10). The third rotating shaft (13) and the second rotating shaft (10) are connected by a pulley set (12).
4. The multi-material plastic sorting device according to claim 3, characterized in that: The push rod (19) is slidably connected to the uniform plate (5).
5. The multi-material plastic sorting device according to claim 3, characterized in that: One end of the push rod (19) is slidably mounted inside the mounting plate (18), and a spring (20) is provided between the push rod (19) and the mounting plate (18).
6. The multi-material plastic sorting device according to claim 3, characterized in that: The outer wall of the push rod (19) is slidably connected to a fixing plate (21), which is fixedly installed at the bottom of the feeding hopper (3).
7. A multi-material plastic sorting device according to claim 6, characterized in that: The fixing plate (21) is inclined downward on the side near the uniform plate (5).