A plastic pellet recycling device for a plastic pelletizer
By introducing a uniform feeding and tapping mechanism into the plastic pellet recycling device, the problems of accumulation and clogging during plastic pellet screening are solved, achieving efficient screening and reduced energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI JIAYI NEW MATERIALS TECHNOLOGY CO LTD
- Filing Date
- 2025-07-18
- Publication Date
- 2026-07-21
AI Technical Summary
In existing plastic pellet recycling devices, plastic pellets accumulate on the screen surface during screening, resulting in an effective screening area utilization rate of less than 60%. Small particles are covered by large particles and cannot pass through the screen, affecting the screening effect.
A plastic pellet recycling device was designed, which includes a uniform feeding mechanism and a tapping mechanism. The uniform feeding mechanism uses five sets of rotating shafts and guide plates to evenly distribute the pellets onto the screen surface. The tapping mechanism uses cams to periodically tap the screen to prevent clogging and improve screening efficiency.
It increases the utilization rate of the screen to over 92%, enhances the screening effect, reduces screen clogging, and lowers energy consumption.
Smart Images
Figure CN224527679U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastic pellet recycling, and more specifically, to a plastic pellet recycling device for a plastic pellet mill. Background Technology
[0002] Plastic granulation is a process in plastic machinery processing. The main component of the granulator extruder is the plastic extruder, which mainly consists of an extrusion system, a transmission system, a heating and cooling system, and a receiving system. The extrusion system includes a screw, barrel, hopper, die head, and mold. The die head is divided into angled die head and right-angle die head, which is based on the angle between the material flow direction of the die head and the center line of the screw.
[0003] Existing plastic pellet recycling devices require screening of plastic pellets during recycling. However, during screening, the traditional free-fall method causes plastic pellets to accumulate on the screen surface, resulting in an effective screening area utilization rate of less than 60%. Small pellets are covered by large pellets and cannot pass through the screen, affecting the screening effect and thus the recycling effect of plastic pellets. How to invent a plastic pellet recycling device for plastic granulators to improve these problems has become an urgent problem to be solved by those skilled in the art. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides a plastic pellet recycling device for a plastic granulator. It aims to improve the existing plastic pellet recycling devices, which require screening of plastic pellets during recycling. However, during screening, the traditional free-fall method causes plastic pellets to accumulate on the screen surface, resulting in an effective screening area utilization rate of less than 60%. Small pellets are covered by large pellets and cannot pass through the screen, affecting the screening effect and thus the plastic pellet recycling effect.
[0005] This utility model is implemented as follows:
[0006] This utility model provides a plastic pellet recycling device for a plastic granulator, including a recycling bin and a feed pipe installed on the recycling bin. The inner wall of the recycling bin is provided with two sets of screens with different mesh sizes. The left and right side walls of the recycling bin are provided with discharge ports that cooperate with the screens. The device also includes: a uniform feeding mechanism: the uniform feeding mechanism is installed inside the feed pipe, and the uniform feeding mechanism can evenly distribute plastic pellets onto the screen surface, increasing the screening area of the screen surface; and a striking mechanism: the striking mechanism is installed between the two sets of screens, and the striking mechanism is linked to the uniform feeding mechanism.
[0007] Preferably, the uniform feeding mechanism includes five sets of rotating shafts rotatably disposed inside the feed pipe. One end of each of the five sets of rotating shafts is connected to a bearing disposed on the outer wall of the feed pipe. The other end of each of the five sets of rotating shafts is provided with a gear. A guide plate is sleeved and installed on the outer wall of each of the five sets of rotating shafts. A rack that meshes with the gear is slidably connected inside the recycling box. A slider is disposed on the side wall of the rack. A fixing block is disposed on the side wall of the feed pipe. An electric telescopic rod is disposed on the side wall of the fixing block. One end of the electric telescopic rod is connected to the side wall of the slider.
[0008] Preferably, a slide rod is movably provided through the side wall of the slider, and both ends of the slide rod are connected to the outer side wall of the feed pipe.
[0009] Preferably, the striking mechanism includes a cam disposed between two sets of screens, a drive shaft disposed on the side wall of the cam, a driven pulley disposed at one end of the drive shaft, a drive pulley disposed at one end of any set of rotating shafts, and a belt sleeved on the outer wall of the drive pulley and the driven pulley.
[0010] Preferably, the drive shaft is fitted with a bearing, and the side wall of the recycling bin has a through hole, with the bearing engaging with the inner wall of the through hole.
[0011] Preferably, the feed pipe is located below the recycling bin, and the feed pipe is arranged in a funnel shape below it.
[0012] The beneficial effects of this utility model are:
[0013] 1. This utility model, by setting up a uniform feeding mechanism, achieves a screen utilization rate of over 92% through uniform material distribution, thereby increasing the processing capacity, improving the screening effect, and thus enhancing the recycling effect.
[0014] 2. This utility model, by setting a striking mechanism connected to the uniform feeding mechanism, allows the cam protrusion to indirectly strike the two sets of screens during uniform feeding, reducing the screen hole clogging rate. The linkage design saves the independent drive motor and reduces energy consumption. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the rotating shaft and striking mechanism of this utility model;
[0018] Figure 3 This is a schematic diagram of the uniform feeding mechanism of this utility model.
[0019] In the diagram: 1. Recycling bin; 2. Screen; 3. Discharge port; 4. Beating mechanism; 400. Cam; 401. Drive shaft; 402. Driven pulley; 403. Belt; 404. Driven pulley; 5. Uniform feeding mechanism; 500. Rotating shaft; 501. Guide plate; 502. Gear; 503. Rack; 504. Slider; 505. Electric telescopic rod; 506. Fixed block; 507. Slide rod; 6. Feed pipe. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0021] Example, refer to Figures 1-3 A plastic pellet recycling device for a plastic granulator includes a recycling bin 1 and a feed pipe 6 disposed on the recycling bin 1. The feed pipe 6 is located inside the recycling bin 1 and is funnel-shaped. The inner wall of the recycling bin 1 is provided with two sets of screens 2 with different screen sizes. The left and right side walls of the recycling bin 1 are provided with discharge ports 3 that cooperate with the screens 2, which can screen plastic pellets of different sizes and discharge them from the corresponding discharge ports 3. The device also includes: a uniform feeding mechanism 5: the uniform feeding mechanism 5 is disposed inside the feed pipe 6, which can evenly distribute the plastic pellets onto the surface of the screens 2, thereby increasing the screening area of the screens 2; and a striking mechanism 4: the striking mechanism 4 is disposed between the two sets of screens 2 and is linked to the uniform feeding mechanism 5.
[0022] The uniform feeding mechanism 5 includes five sets of rotating shafts 500 rotatably installed inside the feed pipe 6. One end of each set of rotating shafts 500 is connected to a bearing on the outer wall of the feed pipe 6, and the other end of each set of rotating shafts 500 is equipped with a gear 502. A guide plate 501 is sleeved and installed on the outer wall of each set of rotating shafts 500. A rack 503 that meshes with the gear 502 is slidably connected inside the recycling box 1. A slider 504 is provided on the side wall of the rack 503. A sliding rod 507 is movably inserted through the side wall of the slider 504. Both ends of the sliding rod 507 are connected to the outer wall of the feed pipe 6. Under the action of the sliding rod 507, the slider 504 moves more stably. A fixing block 506 is provided on the side wall of the feed pipe 6. An electric telescopic rod 505 is provided on the side wall of the fixing block 506. One end of the electric telescopic rod 505 is connected to the side wall of the slider 504.
[0023] It should be noted that: the electric telescopic rod 505 pushes the slider 504 to drive the rack 503 to reciprocate, the gear 502 drives the rotating shaft 500 to swing ±30°, the guide plate 501 alternately flips, and the particles are evenly scattered onto the surface of the screen 2 in a fan shape.
[0024] The striking mechanism 4 includes a cam 400 between two sets of screens 2. The side wall of the cam 400 is provided with a drive shaft 401. One end of the drive shaft 401 is provided with a driven pulley 402. A bearing is sleeved on the drive shaft 401. A through hole is opened on the side wall of the recycling box 1. The bearing cooperates with the inner wall of the through hole. Under the action of the bearing, the drive shaft 401 rotates more stably. One end of any set of rotating shafts 500 is provided with a drive pulley 404. A belt 403 is sleeved on the outer wall of the drive pulley 404 and the driven pulley 402.
[0025] It should be noted that when the guide plate 501 swings, the rotating shaft 500 drives the active pulley 404 to rotate, which, with the cooperation of the belt 403, drives the driven pulley 402 and the drive shaft 401 to rotate, thereby causing the cam 400 to rotate at high speed and periodically hammer the screen 2, shaking off the stuck particles.
[0026] Working principle: Plastic granules enter the recycling bin 1 through the feed pipe 6. The electric telescopic rod 505 pushes the slider 504 to drive the rack 503 to reciprocate. The gear 502 drives the rotating shaft 500 to swing ±30°. The guide plate 501 alternately flips, and the granules are evenly scattered onto the surface of the screen 2 in a fan shape. When the guide plate 501 swings, the rotating shaft 500 drives the drive pulley 404 to rotate. With the cooperation of the belt 403, the driven pulley 402 and the drive shaft 401 rotate. The cam 400 rotates at high speed and periodically hammers the screen 2, shaking off the stuck granules. The upper large-pore screen 2 can screen large plastic granules and promote the large granules to slide to the discharge port. The lower fine-pore screen can screen small plastic granules, prolong the residence time of small granules and improve the screening rate.
[0027] It should be noted that the specific model and specifications of the motor need to be selected and determined based on the actual specifications of the device. The specific selection and calculation method adopts the existing technology in this field, so it will not be described in detail here.
[0028] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A plastic pellet recycling device for a plastic pelletizer, comprising a recycling bin (1) and a feed pipe (6) disposed on the recycling bin (1), wherein the inner wall of the recycling bin (1) is provided with two sets of screens (2) with different mesh sizes, and the left and right side walls of the recycling bin (1) are provided with discharge ports (3) that cooperate with the screens (2), characterized in that, Also includes: Uniform feeding mechanism (5): The uniform feeding mechanism (5) is set in the feed pipe (6). The uniform feeding mechanism (5) can evenly sprinkle plastic particles onto the surface of the screen (2) to increase the screening area of the screen (2). The striking mechanism (4) is set between the two sets of screens (2) and is linked with the uniform feeding mechanism (5).
2. The plastic pellet recycling device for a plastic pelletizer according to claim 1, characterized in that, The uniform feeding mechanism (5) includes five sets of rotating shafts (500) rotatably disposed inside the feed pipe (6). One end of each of the five sets of rotating shafts (500) is connected to a bearing disposed on the outer side wall of the feed pipe (6). The other end of each of the five sets of rotating shafts (500) is provided with a gear (502). A guide plate (501) is sleeved and installed on the outer wall of each of the five sets of rotating shafts (500). A rack (503) that meshes with the gear (502) is slidably connected inside the recycling box (1). A slider (504) is disposed on the side wall of the rack (503). A fixing block (506) is disposed on the side wall of the feed pipe (6). An electric telescopic rod (505) is disposed on the side wall of the fixing block (506). One end of the electric telescopic rod (505) is connected to the side wall of the slider (504).
3. A plastic pellet recycling device for a plastic granulator according to claim 2, characterized in that, The slider (504) has a sliding rod (507) that is movably inserted through its side wall. Both ends of the sliding rod (507) are connected to the outer side wall of the feed pipe (6).
4. A plastic pellet recycling device for a plastic granulator according to claim 1, characterized in that, The striking mechanism (4) includes a cam (400) provided between two sets of screens (2), a drive shaft (401) provided on the side wall of the cam (400), a driven pulley (402) provided at one end of the drive shaft (401), a drive pulley (404) provided at one end of any set of rotating shafts (500), and a belt (403) sleeved on the outer wall of the drive pulley (404) and the driven pulley (402).
5. A plastic pellet recycling device for a plastic granulator according to claim 4, characterized in that, The drive shaft (401) is fitted with a bearing, and the side wall of the recycling box (1) has a through hole, which is fitted with the inner wall of the through hole.
6. A plastic pellet recycling device for a plastic granulator according to claim 1, characterized in that, The feed pipe (6) is located inside the recycling box (1), and the feed pipe (6) is funnel-shaped.