A shredding device for a plastic-wood composite material processing plant

Abstract

The utility model discloses a kind of plastic wood composite material processing workshop's crushing equipment, including base, the top surface of base is fixedly connected with multiple grinding cylinders, the grinding cylinder is fixedly connected with barrel in, multiple through holes are set in the barrel, grinding piece is rotatably connected in the barrel, cleaning piece is fixedly connected on the grinding piece, the top surface of grinding cylinder is fixedly connected with crushing piece, the bottom surface of base is fixedly connected with the hopper being communicated with the grinding cylinder, the end of the hopper is communicated with mixing piece, the mixing piece is fixed in the bottom surface of base, the side surface of base is fixedly connected with general control box. The utility model is through the structural design of optimization screening mechanism, fundamentally solves the difficult problem of jamming cleaning, cleaning piece uses the structure of high pressure airflow cooperation bristle, can effectively remove the fiber impurities attached in through hole, ensures the stability and durability of screening effect.

Description

Technical Field

[0001] This utility model relates to the field of crushing equipment technology, and in particular to a crushing equipment for use in a wood-plastic composite material processing workshop. Background Technology

[0002] Wood-plastic composite (WPC), also known as wood-plastic composite material, is, as the name suggests, primarily made from recycled waste plastics such as polypropylene (PP), polyethylene (PE), and polyvinyl chloride (PVC). It is created by adding waste plant fibers such as wood flour, rice husks, and straw, and then processing these materials through plastic processing techniques such as extrusion, molding, and injection molding to produce boards or profiles. It is mainly used in the building materials, furniture, and logistics packaging industries.

[0003] Patent publication number CN210705426U discloses a raw material proportioning device for the production of wood-plastic composite materials. The device includes a workbench with multiple screening cylinders fixedly installed on it. Each screening cylinder has a feeding cylinder fixedly connected to its upper end, and a crushing bin is fixedly connected to the upper end of each feeding cylinder. A mixing cylinder is rotatably mounted on the lower end of the workbench. The mixing cylinder has a feed inlet that mates with a sleeve, and a second valve on the feed inlet. A discharge hopper with a third valve is located at the lower end of the mixing cylinder. By setting up screening cylinders, crushing bins, a feeding hopper, and a mixing cylinder, different materials are initially crushed separately through different crushing bins, then fall into the corresponding screening cylinders for screening to obtain qualified particle sizes. These particles are then fed into the mixing cylinder for mixing, ensuring the orderly proportioning of wood-plastic composite materials. This device is simple to operate and suitable for widespread application.

[0004] However, the through holes in the sorting cylinder are prone to clogging when screening wood. Since the sorting cylinder is fixed inside the screening cylinder, it is not convenient to remove the sorting cylinder from the screening cylinder to clean the clogged through holes. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a crushing device for wood-plastic composite material processing workshops.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a crushing device for a wood-plastic composite material processing workshop, comprising a base, a plurality of grinding cylinders fixedly connected to the top surface of the base, a cylinder body fixedly connected inside the grinding cylinder, a plurality of through holes opened inside the cylinder, a grinding component rotatably connected inside the cylinder, a cleaning component fixedly connected to the grinding component, a crushing component fixedly connected to the top surface of the grinding cylinder, a hopper communicating with the grinding cylinder fixedly connected to the bottom surface of the base, a mixing component connected to the end of the hopper, the mixing component fixed to the bottom surface of the base, and a central control box fixedly connected to the side surface of the base.

[0007] As a further description of the above technical solution: the mixing component includes a mixing tank fixed at the center of the bottom surface of the base, a protective cover fixedly connected to the top wall of the mixing tank, a mixing motor fixedly connected inside the protective cover, the output end of the mixing motor being drivenly connected to a first rotating shaft, the first rotating shaft rotating through the protective cover, a stirring claw fixedly connected to the outer periphery of the first rotating shaft, a support plate fixedly sleeved on the outer periphery of the mixing tank, a support leg fixedly connected to the outer periphery of the support plate, the support leg being vertically fixed to the bottom surface of the base, a feed pipe fixedly connected to the outer periphery of the mixing tank, the feed pipe communicating with the hopper, a discharge pipe communicating with the hopper passing through the bottom surface of the grinding cylinder, and a discharge valve provided on the bottom surface of the mixing tank.

[0008] As a further description of the above technical solution: the crushing component includes a trough fixedly connected to the top surface of the grinding cylinder, a plurality of crushing rollers are rotatably connected inside the trough, the ends of the crushing rollers are coaxially fixed with gears, the gears mesh with each other, a crushing motor is fixedly connected to the outside of the trough, and the output end of the crushing motor is drivenly connected to the end of one of the crushing rollers.

[0009] As a further description of the above technical solution: the grinding component includes a second rotating shaft rotatably connected to the center of the cylinder, a grinding motor is vertically fixed on the bottom surface of the base, the output end of the grinding motor is connected to the end of the second rotating shaft, a grinding roller is horizontally fixed on the outer periphery of the second rotating shaft, and the cleaning component is connected to the second rotating shaft.

[0010] As a further description of the above technical solution: the cleaning component includes a high-temperature fan fixedly connected to the center of the top surface of the base, the output end of the high-temperature fan is connected to a duct, the duct passes through the grinding cylinder, the end of the duct is rotatably connected to a hollow block, the hollow block is fixedly connected to the top surface of the second rotating shaft, the inner wall of the cylinder is provided with an L-shaped jet block, the L-shaped jet block is connected to the hollow block, the outer surface of the L-shaped jet block is provided with bristles that fit against the bottom wall and side wall of the cylinder, and the vertical surface of the L-shaped jet block is horizontally provided with multiple jet nozzles that are connected to the L-shaped jet block.

[0011] As a further description of the above technical solution: the outer periphery of the second rotating shaft is horizontally fixed with a tilting plate, which is located inside the cylinder.

[0012] As a further description of the above technical solution: an L-shaped scraper is fixedly connected to the bottom surface of the hollow block, and the L-shaped scraper is in contact with the bottom wall and side wall of the grinding cylinder.

[0013] This utility model has the following beneficial effects:

[0014] 1. Compared with existing technologies, the crushing equipment used in this wood-plastic composite material processing workshop fundamentally solves the problem of clogging and cleaning by optimizing the structural design of the screening mechanism. Specifically, the original fixed material selection cylinder is improved into a dynamic working unit with built-in grinding and cleaning components. While the grinding components crush and screen the materials, the cleaning components can simultaneously clean the inner wall of the cylinder and the through holes in real time. This integrated design not only avoids downtime caused by clogging of the screening cylinder, but also eliminates the cumbersome steps of disassembly and cleaning required in traditional equipment, significantly improving the continuous operation capability and production efficiency of the equipment. At the same time, the cleaning components adopt a high-pressure airflow combined with a bristle structure, which can effectively remove fibrous impurities attached to the through holes, ensuring the stability and durability of the screening effect.

[0015] 2. Compared with existing technologies, the crushing equipment used in this wood-plastic composite material processing workshop integrates multiple modules such as crushing, screening, and mixing, and introduces automated control, achieving efficient integration and intelligent management of the wood-plastic raw material processing flow. The equipment adopts a centralized control mixing unit and an independently controlled crushing and grinding unit working together to ensure the accuracy of different material ratios and the uniformity of mixing. In addition, the added tipping plate and L-shaped scraper further optimize the material flow path, preventing material residue and cross-contamination. This highly integrated design not only reduces the equipment footprint and operation steps, and reduces the intensity of manual intervention and energy consumption, but also achieves full-process monitoring through the central control box, significantly improving the quality control level and overall economic benefits of wood-plastic composite material production. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of the overall structure of a crushing equipment for a wood-plastic composite material processing workshop proposed in this utility model;

[0017] Figure 2 This is a main sectional view of the overall structure of a crushing equipment for a wood-plastic composite material processing workshop proposed in this utility model;

[0018] Figure 3 This is a main sectional view of the internal structure of the grinding cylinder of a crushing equipment for a wood-plastic composite material processing workshop proposed in this utility model;

[0019] Figure 4 This is a side sectional view of the internal structure of the grinding cylinder of a crushing equipment for a wood-plastic composite material processing workshop proposed in this utility model;

[0020] Figure 5 This utility model proposes a crushing device for use in a wood-plastic composite material processing workshop. Figure 3 Enlarged view of the structure at point A in the middle;

[0021] Figure 6This utility model proposes a crushing device for use in a wood-plastic composite material processing workshop. Figure 4 Enlarged view of the structure at point B.

[0022] Legend:

[0023] 1. Tank; 2. Gear; 3. Crushing roller; 4. Crushing motor; 5. Grinding cylinder; 6. Air duct; 7. Base; 8. High-temperature fan; 9. Support plate; 10. Mixing tank; 11. Feed pipe; 12. Hopper; 13. Main control box; 14. Grinding motor; 15. Mixing motor; 16. Stirring claw; 17. First rotating shaft; 18. Cylinder; 19. Hollow block; 20. Second rotating shaft; 21. Through hole; 22. L-shaped air jet block; 23. Brush bristles; 24. Air jet nozzle; 25. L-shaped scraper; 26. Tilting plate; 27. Grinding roller. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Reference Figures 1 to 6 The present invention provides a crushing device for a wood-plastic composite material processing workshop: including a base 7, a plurality of grinding cylinders 5 fixedly connected to the top surface of the base 7, a cylinder body 18 fixedly connected inside the grinding cylinders 5, a plurality of through holes 21 opened inside the cylinder body 18, a grinding component rotatably connected inside the cylinder body 18, a cleaning component fixedly connected to the grinding component, a crushing component fixedly connected to the top surface of the grinding cylinders 5, a hopper 12 connected to the grinding cylinders 5 fixedly connected to the bottom surface of the base 7, a mixing component connected to the end of the hopper 12, the mixing component fixed to the bottom surface of the base 7, and a main control box 13 fixedly connected to the side of the base 7;

[0026] The grinding component includes a second rotating shaft 20 rotatably connected to the center of the cylinder 18, a grinding motor 14 vertically fixed to the bottom surface of the base 7, the output end of the grinding motor 14 being connected to the end of the second rotating shaft 20, a grinding roller 27 horizontally fixed to the outer periphery of the second rotating shaft 20, a cleaning component connected to the second rotating shaft 20, a tilting plate 26 horizontally fixed to the outer periphery of the second rotating shaft 20, the tilting plate 26 being located inside the cylinder 18, and an L-shaped scraper 25 fixedly connected to the bottom surface of the hollow block 19, the L-shaped scraper 25 being in contact with the bottom and side walls of the grinding cylinder 5;

[0027] The cleaning component includes a high-temperature fan 8 fixedly connected to the center of the top surface of the base 7. The output end of the high-temperature fan 8 is connected to a duct 6, which passes through the grinding cylinder 5. The end of the duct 6 is rotatably connected to a hollow block 19, which is fixedly connected to the top surface of the second rotating shaft 20. The inner wall of the cylinder 18 is provided with an L-shaped jet block 22, which is connected to the hollow block 19. The outer surface of the L-shaped jet block 22 is provided with bristles 23 that fit against the bottom and side walls of the cylinder 18. The vertical surface of the L-shaped jet block 22 is horizontally provided with multiple jet nozzles 24 that are connected to the L-shaped jet block 22.

[0028] The crushing component includes a trough 1 fixedly connected to the top surface of the grinding cylinder 5, a plurality of crushing rollers 3 rotatably connected inside the trough 1, a gear 2 coaxially fixed at the end of the crushing rollers 3, the gears 2 meshing with each other, and a crushing motor 4 fixedly connected to the outside of the trough 1, the output end of the crushing motor 4 being drivenly connected to the end of one of the crushing rollers 3.

[0029] The mixing component includes a mixing tank 10 fixed at the center of the bottom surface of the base 7. A protective cover is fixedly connected to the top wall of the mixing tank 10. A mixing motor 15 is fixedly connected inside the protective cover. The output end of the mixing motor 15 is driven by a first rotating shaft 17. The first rotating shaft 17 rotates through the protective cover. A stirring claw 16 is fixedly connected to the outer periphery of the first rotating shaft 17. A support plate 9 is fixedly sleeved on the outer periphery of the mixing tank 10. A support leg is fixedly connected to the outer periphery of the support plate 9. The support leg is vertically fixed to the bottom surface of the base 7. A feed pipe 11 is fixedly connected to the outer periphery of the mixing tank 10. The feed pipe 11 is connected to the hopper 12. A discharge pipe connected to the hopper 12 passes through the bottom surface of the grinding cylinder 5. A discharge valve is provided on the bottom surface of the mixing tank 10.

[0030] Working principle: In use, different types of raw materials are put into the corresponding tank 1, the crushing motor 4 is started, driving one of the crushing rollers 3 to rotate. Through the transmission of the meshing gear set 2, all the crushing rollers 3 begin to rotate synchronously in opposite directions. Under the shearing and squeezing action of the crushing rollers 3, the raw materials are initially crushed into smaller particles, preparing for subsequent fine grinding and screening. The material after initial crushing falls from the tank 1 into the cylinder 18 of the grinding cylinder 5 below. The grinding motor 14 is started, driving the second rotating shaft 20 to rotate at high speed. The grinding roller 27 fixed on the second rotating shaft 20 rotates accordingly, crushing and secondary crushing the material in the cylinder 18. At the same time, the grinding roller 27 fixed on the second rotating shaft 20 rotates, crushing and secondary crushing the material in the cylinder 18. The turning plate 26 on the second rotating shaft 20 continuously turns the material, ensuring that all materials are fully ground and promoting the passage of particles of the correct size through the through holes 21 on the cylinder 18. Only fine particles with a diameter smaller than the diameter of the through holes 21 can pass through the through holes 21 and fall into the hopper 12 below, completing the screening. Larger particles continue to be ground inside the cylinder 18. The L-shaped air jet block 22 fixed on the second rotating shaft 20 rotates with the shaft. During the rotation, the bristles 23 attached to its surface continuously scrape the inner wall and bottom wall of the cylinder 18, physically removing fibrous impurities attached to or blocked by the through holes 21. The high-temperature fan 8 starts, generating high-pressure hot air, which passes through the air duct 6. The material is conveyed to the rotating hollow block 19 and then introduced into the L-shaped jet block 22 connected to it. Finally, high-pressure hot air is ejected at high speed from multiple jet nozzles 24 on the vertical surface of the L-shaped jet block 22. This airflow directly impacts the side and bottom walls of the cylinder 18, using the kinetic energy of the airflow to blow out the fine impurities blocking the through holes 21, restoring the unobstructed flow of the through holes 21. The L-shaped scraper 25 on the bottom surface of the hollow block 19 rotates with the shaft and remains in contact with the inner wall of the grinding cylinder 5, which can scrape off residual materials that may be attached to the cylinder wall or corners, preventing material accumulation. The dual action of the mechanical scraper and high-pressure air blowing of the cleaning components provides real-time and uninterrupted cleaning during grinding and screening, fundamentally avoiding... The blockage of the through hole 21 ensures the continuous stability of the screening efficiency. Various material particles that have passed the screening of different grinding cylinders 5 are collected into the central mixing tank 10 through their respective feed pipes and hoppers 12 via the feed pipe 11. The mixing motor 15 is started to drive the first rotating shaft 17 and the stirring claw 16 fixed on it to rotate at high speed. The stirring claw 16 strongly stirs the various raw materials (such as plastic particles and wood fiber particles of different proportions) collected in proportion in the mixing tank 10, so that they are fully and evenly mixed to form the mixed raw materials required for the production of wood-plastic composite materials. After the mixing is completed, the discharge valve at the bottom of the mixing tank 10 is opened to discharge the evenly mixed material.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 the present utility model should be included within the protection scope of the present utility model.

Claims

1. A crushing device for a wood-plastic composite material processing workshop, comprising a base (7), characterized in that: Multiple grinding cylinders (5) are fixedly connected to the top surface of the base (7). A cylinder body (18) is fixedly connected inside the grinding cylinder (5). Multiple through holes (21) are opened inside the cylinder body (18). A grinding component is rotatably connected inside the cylinder body (18). A cleaning component is fixedly connected to the grinding component. A crushing component is fixedly connected to the top surface of the grinding cylinder (5). A hopper (12) communicating with the grinding cylinder (5) is fixedly connected to the bottom surface of the base (7). A mixing component is connected to the end of the hopper (12). The mixing component is fixed to the bottom surface of the base (7). A main control box (13) is fixedly connected to the side of the base (7).

2. The crushing equipment for a wood-plastic composite material processing workshop according to claim 1, characterized in that: The mixing component includes a mixing tank (10) fixed at the center of the bottom surface of the base (7). A protective cover is fixedly connected to the top wall of the mixing tank (10). A mixing motor (15) is fixedly connected inside the protective cover. The output end of the mixing motor (15) is connected to a first rotating shaft (17). The first rotating shaft (17) rotates through the protective cover. A stirring claw (16) is fixedly connected to the outer periphery of the first rotating shaft (17). A support plate (9) is fixedly sleeved on the outer periphery of the mixing tank (10). A support leg is fixedly connected to the outer periphery of the support plate (9). The support leg is vertically fixed to the bottom surface of the base (7). A feed pipe (11) is fixedly connected to the outer periphery of the mixing tank (10). The feed pipe (11) is connected to the hopper (12). A discharge pipe connected to the hopper (12) is passed through the bottom surface of the grinding cylinder (5). A discharge valve is provided on the bottom surface of the mixing tank (10).

3. The crushing equipment for a wood-plastic composite material processing workshop according to claim 1, characterized in that: The crushing component includes a trough (1) fixedly connected to the top surface of the grinding cylinder (5), a plurality of crushing rollers (3) are rotatably connected inside the trough (1), and a gear (2) is fixedly fixed to the end of the crushing roller (3) on the same axis. The gears (2) mesh with each other. A crushing motor (4) is fixedly connected to the outside of the trough (1), and the output end of the crushing motor (4) is connected to the end of one of the crushing rollers (3) in a transmission connection.

4. The crushing equipment for a wood-plastic composite material processing workshop according to claim 1, characterized in that: The grinding component includes a second rotating shaft (20) rotatably connected to the center of the cylinder (18), a grinding motor (14) is vertically fixed on the bottom surface of the base (7), the output end of the grinding motor (14) is connected to the end of the second rotating shaft (20) for transmission, a grinding roller (27) is horizontally fixed on the outer periphery of the second rotating shaft (20), and the cleaning component is connected to the second rotating shaft (20).

5. The crushing equipment for a wood-plastic composite material processing workshop according to claim 4, characterized in that: The cleaning component includes a high-temperature fan (8) fixedly connected to the center of the top surface of the base (7). The output end of the high-temperature fan (8) is connected to a duct (6). The duct (6) passes through the grinding cylinder (5). The end of the duct (6) is rotatably connected to a hollow block (19). The hollow block (19) is fixedly connected to the top surface of the second rotating shaft (20). The inner wall of the cylinder (18) is provided with an L-shaped jet block (22). The L-shaped jet block (22) is connected to the hollow block (19). The outer surface of the L-shaped jet block (22) is provided with bristles (23) that fit against the bottom and side walls of the cylinder (18). The vertical surface of the L-shaped jet block (22) is horizontally provided with multiple jet nozzles (24) that are connected to the L-shaped jet block (22).

6. The crushing equipment for a wood-plastic composite material processing workshop according to claim 5, characterized in that: The outer periphery of the second rotating shaft (20) is horizontally fixed with a turning plate (26), which is located inside the cylinder (18).

7. The crushing equipment for a wood-plastic composite material processing workshop according to claim 5, characterized in that: The bottom surface of the hollow block (19) is fixedly connected to an L-shaped scraper (25), and the L-shaped scraper (25) is in contact with the bottom wall and side wall of the grinding cylinder (5).

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