Automatic feeding and pretreatment device for waste plastics
Patent Information
- Application Number
- CN202521735509.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-15
- Publication Date
- 2026-09-29
- Estimated Expiration
- 2035-08-15
AI Technical Summary
[0003]但是现有的废弃塑料预处理装置只能将废弃塑料进行破碎操作，不具备对废弃塑料破碎粒径的筛选及回流破碎的功能，影响预处理破碎的效果，从而影响后续熔融的效率
本申请技术方案通过筛分筒、筛分电机、转轴、圆形滤孔盘、拨杆、排料孔、回流孔、回流箱、输送筒、输送电机、输送轴、螺旋叶片和斜排料管之间的配合使用，实现破碎粒径的筛选及回流破碎的功能，保证预处理破碎的效果。
Smart Images
Figure CN224809853U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of waste plastic recycling technology, specifically to an automatic feeding and pretreatment device for waste plastics. Background Technology
[0002] Plastics are synthetic polymer materials made from high molecular weight organic substances (synthetic resins) as basic raw materials, which are shaped by heating and melting and maintain a fixed shape at room temperature. Plastic recycling refers to the process of recycling waste plastics to achieve the goal of turning waste into treasure. The harm of waste plastics is mainly reflected in visual pollution and urban landscape damage, soil and water pollution, microplastics and health threats, animal survival crisis, resource waste and fire hazards. Therefore, waste plastic recycling has gradually gained attention worldwide. Waste plastic recycling requires the use of pre-treatment equipment to crush the waste plastics. The crushed waste plastics are then melted and granulated to achieve the effect of recycling.
[0003] However, existing waste plastic pretreatment equipment can only crush waste plastics and does not have the function of screening the crushed waste plastic particles or recirculating them for crushing, which affects the effect of pretreatment crushing and thus affects the efficiency of subsequent melting. Utility Model Content
[0004] The purpose of this invention is to provide an automatic feeding and pretreatment device for waste plastics, which solves the problems mentioned in the background art.
[0005] This application provides an automatic feeding and pretreatment device for waste plastics, including a base. A pretreatment crushing box and a conveying feeding device are arranged above the base. A screening cylinder is arranged below the pretreatment crushing box, and a hopper connects the pretreatment crushing box and the screening cylinder. The outer wall of the screening cylinder has a discharge hole and a return hole, and a return box is fixedly installed on the outer wall of the screening cylinder. A screening motor is fixedly installed in the middle of the bottom of the screening cylinder. A rotating shaft is fixedly installed at the output end of the screening motor, and a component is fixedly installed at the upper end of the rotating shaft. A circular filter disc matching the screening cylinder is provided. The bottom of the reflux hole is at the same height as the top of the circular filter disc, and the reflux hole is connected to the interior of the reflux box. A conveying cylinder is provided on one side of the pretreatment crushing box. The lower end of the conveying cylinder is inside the reflux box, and a conveying motor is fixedly installed at the upper end of the conveying cylinder. A conveying shaft is rotatably installed inside the conveying cylinder, and an inclined discharge pipe is connected to the upper part of the conveying cylinder. The upper end of the conveying shaft is fixedly installed to the output end of the conveying motor, and a spiral blade matching the conveying cylinder is fixedly connected to the outer wall of the conveying shaft.
[0006] Optionally, a crushing motor is fixedly installed on the rear side of the pretreatment crushing box, and matching crushing roller one and crushing roller two are respectively arranged on both sides inside the pretreatment crushing box. A connecting shaft one and a connecting shaft two are respectively passed through and fixedly connected in the middle of crushing roller one and crushing roller two. The connecting shaft one and connecting shaft two are rotatably installed with the pretreatment crushing box. The rear end of the connecting shaft one is fixedly installed with the output end of the crushing motor, and the front end of the crushing motor passes through the front side of the pretreatment crushing box and is fixedly installed with spur gear one. The front end of the connecting shaft two passes through the front side of the pretreatment crushing box and is fixedly installed with spur gear two. Spur gear one and spur gear two are meshed and connected. Inclined plates are symmetrically fixedly connected to the inner walls on both sides of the upper part of the pretreatment crushing box.
[0007] Optionally, the conveying and feeding device is a belt conveyor, and the conveying and feeding device is compatible with the pretreatment crushing box.
[0008] Optionally, a lever matching the screening cylinder is fixedly installed on the outer wall of the rotating shaft, and the bottom of the lever contacts the bottom inner wall of the screening cylinder.
[0009] Optionally, two connecting rings are fitted and fixedly connected to the conveying cylinder, and one side of the connecting ring is fixedly installed to the outer wall of the pretreatment crushing box.
[0010] Optionally, L-shaped rods are symmetrically fixedly installed on the front and rear sides of the pretreatment crushing box, four support rods are fixedly installed at the bottom of the conveying and feeding device, and four support shafts are fixedly installed at the outer edge of the bottom of the screening cylinder. The bottom of the L-shaped rods, support rods and support shafts are all fixedly installed on the top of the base.
[0011] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows: The technical solution of this application achieves the functions of screening and reflux crushing by using the cooperation of screening cylinder, screening motor, rotating shaft, circular filter disc, lever, discharge hole, reflux hole, reflux box, conveying cylinder, conveying motor, conveying shaft, spiral blade and inclined discharge pipe, thus ensuring the effect of pre-treatment crushing.
[0012] The technical solution of this application enables rapid pre-treatment and crushing of waste plastics through the coordinated use of a pre-treatment crushing box, a crushing motor, a connecting shaft one, a connecting shaft two, a spur gear one, a spur gear two, a crushing roller one, and a crushing roller two. Furthermore, the inclined plate ensures that the waste plastics entering the pre-treatment crushing box are concentrated between crushing roller one and crushing roller two, thus not affecting the crushing speed. Attached Figure Description
[0013] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1This is a schematic diagram of the structure of the present invention from the front view. Figure 2 This is a cross-sectional view of the main view of the screening cylinder of this utility model; Figure 3 This is a cross-sectional view of the main view of the conveyor cylinder of this utility model; Figure 4 This is a top view of the pretreatment crushing box of this utility model.
[0014] In the diagram: 1. Base; 2. Pre-treatment crushing box; 3. Conveying and feeding device; 4. Screening cylinder; 5. Hopper; 6. Discharge hole; 7. Return hole; 8. Return box; 9. Screening motor; 10. Conveying cylinder; 11. L-shaped rod; 12. Support rod; 13. Support shaft; 14. Connecting ring; 15. Rotating shaft; 16. Circular filter disc; 17. Lever; 18. Conveying motor; 19. Conveying shaft; 20. Spiral blade; 21. Inclined discharge pipe; 22. Crushing motor; 23. Crushing roller one; 24. Crushing roller two; 25. Connecting shaft one; 26. Connecting shaft two; 27. Spur gear one; 28. Spur gear two; 29. Inclined plate. Detailed Implementation
[0015] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0016] Please see Figure 1-3 This utility model provides an automatic feeding and pretreatment device for waste plastics, including a base 1. A pretreatment crushing box 2 and a conveying and feeding device 3 are arranged above the base 1. A screening cylinder 4 is arranged below the pretreatment crushing box 2, and a hopper 5 connects the pretreatment crushing box 2 and the screening cylinder 4. The outer wall of the screening cylinder 4 is provided with a discharge hole 6 and a return hole 7, and a return box 8 is fixedly installed on the outer wall of the screening cylinder 4. A screening motor 9 is fixedly installed in the middle of the bottom of the screening cylinder 4. A rotating shaft 15 is fixedly installed at the output end of the screening motor 9, and a circular object matching the screening cylinder 4 is fixedly installed at the upper end of the rotating shaft 15. The bottom of the circular filter plate 16 and the top of the return hole 7 are at the same height, and the return hole 7 is connected to the inside of the return box 8. A conveying cylinder 10 is provided on one side of the pretreatment crushing box 2. The lower end of the conveying cylinder 10 is inside the return box 8, and a conveying motor 18 is fixedly installed on the upper end of the conveying cylinder 10. A conveying shaft 19 is rotatably installed inside the conveying cylinder 10, and an inclined discharge pipe 21 is connected to the upper part of the conveying cylinder 10. The upper end of the conveying shaft 19 is fixedly installed with the output end of the conveying motor 18, and a spiral blade 20 matching the conveying cylinder 10 is fixedly connected to the outer wall of the conveying shaft 19. In this technical solution, the waste plastic crushed in the pretreatment crushing box 2 is fed into the screening cylinder 4 through the hopper 5. Waste plastic that meets the crushing particle size will fall into the lower part of the screening cylinder 4 through the circular filter plate 16, while waste plastic that does not meet the crushing particle size will be blocked above the circular filter plate 16. The screening motor 9 drives the rotating shaft 15 to rotate, and the rotating shaft 15 drives the circular filter plate 16 to rotate. This allows the waste plastic that does not meet the crushing particle size to be collected through the return hole 7 into the return box 8 under the action of centrifugal force. The conveying motor 18 drives the conveying shaft 19 and the spiral blade 20 to rotate, which can convey the waste plastic that does not meet the crushing particle size in the return box 8 upward. Finally, it flows back to the pretreatment crushing box 2 through the inclined discharge pipe 21 to continue crushing until the required particle size is reached. This realizes the functions of screening the crushed particle size and returning the crushed plastic, ensuring the effect of pretreatment crushing.
[0017] In some technical solutions, such as Figure 1 and Figure 4 As shown, a crushing motor 22 is fixedly installed on the rear side of the pretreatment crushing box 2, and matching crushing roller 1 23 and crushing roller 24 are respectively provided on both sides inside the pretreatment crushing box 2. A connecting shaft 1 25 and a connecting shaft 26 are respectively passed through and fixedly connected to the middle of crushing roller 1 23 and crushing roller 24. Both connecting shaft 1 25 and connecting shaft 26 are rotatably installed with the pretreatment crushing box 2. The rear end of connecting shaft 1 25 is fixedly installed with the output end of crushing motor 22, and the front end of crushing motor 22 passes through the front side of pretreatment crushing box 2 and is fixedly installed with spur gear 1 27. The front end of connecting shaft 26 passes through the front side of pretreatment crushing box 2 and is fixedly installed with spur gear 28. Spur gear 1 27 and spur gear 28 are meshed and connected. Inclined plates 29 are symmetrically fixedly connected to the inner walls on both sides of the upper part of the pretreatment crushing box 2.
[0018] In use, the crushing motor 22 drives the connecting shaft 25 to rotate counterclockwise, and the connecting shaft 25 drives the connecting shaft 26 to rotate clockwise through the spur gear 27 and the spur gear 28. This drives the crushing roller 23 and the crushing roller 24 to rotate counterclockwise and clockwise respectively, so as to quickly pre-process and crush the waste plastic. The inclined plate 29 ensures that the waste plastic entering the pre-processing crushing box 2 is concentrated between the crushing roller 23 and the crushing roller 24, so as not to affect the crushing speed.
[0019] In some technical solutions, such as Figure 1 As shown, the conveying and feeding device 3 is a belt conveyor, and the conveying and feeding device 3 is compatible with the pretreatment crushing box 2.
[0020] In use, waste plastics can be automatically fed into the pre-treatment crushing box 2 via the conveying and feeding device 3 of the belt conveyor.
[0021] In some technical solutions, such as Figure 2 As shown, a lever 17 matching the screening cylinder 4 is fixedly installed on the outer wall of the rotating shaft 15, and the bottom of the lever 17 contacts the bottom inner wall of the screening cylinder 4.
[0022] In use, the rotating shaft 15 drives the lever 17 to rotate, which stirs the waste plastic that meets the crushing particle size inside the screening cylinder 4, so that the waste plastic that meets the crushing particle size can be discharged from the discharge hole 6, making unloading more convenient.
[0023] In some technical solutions, such as Figure 1 and Figure 3 As shown, two connecting rings 14 are sleeved and fixedly connected on the conveying cylinder 10, and one side of the connecting ring 14 is fixedly installed on the outer wall of the pretreatment crushing box 2.
[0024] In use, the connecting ring 14 provides a mounting support point for the conveyor cylinder 10.
[0025] In some technical solutions, such as Figure 1 As shown, L-shaped rods 11 are symmetrically fixedly installed on the front and rear sides of the pretreatment crushing box 2, four support rods 12 are fixedly installed at the bottom of the conveying and feeding device 3, and four support shafts 13 are fixedly installed at the outer edge of the bottom of the screening cylinder 4. The bottom of the L-shaped rods 11, support rods 12 and support shafts 13 are all fixedly installed on the top of the base 1.
[0026] When in use, the pretreatment crushing box 2, the conveying and feeding device 3, and the screening cylinder 4 are all fixed on the base 1 to ensure that the device has good overall integrity.
[0027] Working Principle: During use, waste plastic is placed on the conveying and feeding device 3. The conveying and feeding device 3 of the belt conveyor can automatically feed the waste plastic into the pre-treatment crushing box 2. The inclined plate 29 ensures that the waste plastic entering the pre-treatment crushing box 2 is concentrated between the first crushing roller 23 and the second crushing roller 24. The crushing motor 22 drives the connecting shaft 25 to rotate counterclockwise. The connecting shaft 25 drives the connecting shaft 26 to rotate clockwise through the first spur gear 27 and the second spur gear 28. This drives the first crushing roller 23 and the second crushing roller 24 to rotate counterclockwise and clockwise respectively, so as to quickly pre-treat and crush the waste plastic. The crushed waste plastic enters the screening cylinder 4 through the hopper. Waste plastic that meets the crushing particle size will fall through the circular filter disc 16. Inside the screening cylinder 4, waste plastics that do not meet the crushing particle size will be blocked above the circular filter plate 16. The screening motor 9 drives the rotating shaft 15 to rotate, and the rotating shaft 15 drives the lever 17 to rotate, discharging the waste plastics that meet the crushing particle size from the discharge hole 6. The rotating shaft 15 drives the circular filter plate 16 to rotate, so that the waste plastics that do not meet the crushing particle size are collected through the return hole 7 into the return box 8 by centrifugal force. The conveying motor 18 drives the conveying shaft 19 and the spiral blade 20 to rotate, so that the waste plastics that do not meet the crushing particle size in the return box 8 are conveyed upward. Finally, they are returned to the pretreatment crushing box 2 through the inclined discharge pipe 21 to continue crushing until the required particle size is reached, thus realizing the functions of screening and return crushing of crushed particles.
[0028] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. An automatic feeding and pretreatment device for waste plastics, comprising a base (1), characterized in that: A pretreatment crushing box (2) and a conveying and feeding device (3) are arranged above the base (1). A screening cylinder (4) is arranged below the pretreatment crushing box (2), and a hopper (5) is connected between the pretreatment crushing box (2) and the screening cylinder (4). The outer wall of the screening cylinder (4) is provided with a discharge hole (6) and a return hole (7), and a return box (8) is fixedly installed on the outer wall of the screening cylinder (4). A screening motor (9) is fixedly installed in the middle of the bottom of the screening cylinder (4). A rotating shaft (15) is fixedly installed at the output end of the screening motor (9). A circular filter plate (16) matching the screening cylinder (4) is fixedly installed at the upper end of the rotating shaft (15). The return hole (7) The bottom of the pretreatment crushing box (2) is at the same height as the top of the circular filter plate (16), and the return hole (7) is connected to the inside of the return box (8). A conveying cylinder (10) is provided on one side of the pretreatment crushing box (2). The lower end of the conveying cylinder (10) is inside the return box (8), and a conveying motor (18) is fixedly installed on the upper end of the conveying cylinder (10). A conveying shaft (19) is rotatably installed inside the conveying cylinder (10), and an inclined discharge pipe (21) is connected to the upper part of the conveying cylinder (10). The upper end of the conveying shaft (19) is fixedly installed with the output end of the conveying motor (18), and a spiral blade (20) matching the conveying cylinder (10) is fixedly connected to the outer wall of the conveying shaft (19).
2. The automatic feeding and pretreatment device for waste plastics according to claim 1, characterized in that, The rear side of the pretreatment crushing box (2) is fixedly installed with a crushing motor (22), and the two sides inside the pretreatment crushing box (2) are respectively provided with matching crushing roller one (23) and crushing roller two (24). The middle of the crushing roller one (23) and crushing roller two (24) are respectively connected by connecting shaft one (25) and connecting shaft two (26). The connecting shaft one (25) and connecting shaft two (26) are rotatably installed with the pretreatment crushing box (2). The rear end of the connecting shaft one (25) is fixedly installed with the output end of the crushing motor (22), and the front end of the crushing motor (22) passes through the front side of the pretreatment crushing box (2) and is fixedly installed with spur gear one (27). The front end of the connecting shaft two (26) passes through the front side of the pretreatment crushing box (2) and is fixedly installed with spur gear two (28). The spur gear one (27) and spur gear two (28) are meshed and connected. The inner walls of the two sides of the upper part of the pretreatment crushing box (2) are symmetrically fixedly connected with inclined plates (29).
3. The automatic feeding and pretreatment device for waste plastics according to claim 1, characterized in that, The conveying and feeding device (3) is a belt conveyor, and the conveying and feeding device (3) is compatible with the pretreatment crushing box (2).
4. The automatic feeding and pretreatment device for waste plastics according to claim 1, characterized in that, The outer wall of the rotating shaft (15) is fixedly installed with a lever (17) that matches the screening cylinder (4), and the bottom of the lever (17) contacts the bottom inner wall of the screening cylinder (4).
5. The automatic feeding and pretreatment device for waste plastics according to claim 1, characterized in that, Two connecting rings (14) are fitted and fixedly connected to the conveying cylinder (10), and one side of the connecting ring (14) is fixedly installed to the outer wall of the pretreatment crushing box (2).
6. The automatic feeding and pretreatment device for waste plastics according to claim 1, characterized in that, The front and rear sides of the pretreatment crushing box (2) are symmetrically fixed with L-shaped rods (11), the bottom of the conveying and feeding device (3) is fixed with four support rods (12), and the outer edge of the bottom of the screening cylinder (4) is fixed with four support shafts (13). The bottom of the L-shaped rods (11), support rods (12) and support shafts (13) are fixedly installed with the top of the base (1).