Plastic crushing and screening device
By introducing a combination design of local gears, racks, knocking blocks and springs into the plastic screening device, the problem of screening drum blockage is solved, the screening efficiency is improved and the stable operation of the equipment is ensured.
Patent Information
- Application Number
- CN202422931307.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-11-29
AI Technical Summary
During the screening process of existing plastic screening devices, larger particles tend to stick to the inner wall of the screening cylinder or clog the screening holes, resulting in a decrease in screening efficiency.
The design of partial gear, rack, knocking block, spring and screening drum is adopted. The main gear is driven by the motor to rotate, which drives the screening drum to rotate. The gear meshing and spring return mechanism are used to knock on the screening drum to avoid hole blockage.
It effectively prevents clogging of screening holes, improves screening efficiency and ensures continuous operation of the equipment.
Smart Images
Figure CN223478076U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of plastic screening technology, and in particular relates to a plastic crushing and screening device. Background Technology
[0002] Plastic granules refer to granular plastics, which are generally classified into more than 200 types and further subdivided into thousands of types. Common plastic granules include general-purpose plastics, engineering plastics, and specialty plastics. Before the crushed plastic granules are put into subsequent production, they need to be screened to select plastic granules that meet the required size.
[0003] When screening crushed plastic particles, screening devices are generally used. Existing screening devices typically use vibrating screening plates and centrifugal force screening in screening cylinders. For screening cylinders, under the action of centrifugal force, plastic particles adhere to the inner wall of the screening cylinder. Some smaller particles can pass through the holes of the screening cylinder and be screened out, but some larger plastic particles will adhere to the inner wall of the screening cylinder or even block the holes of the screening cylinder, causing blockage and affecting the screening efficiency of the screening cylinder. To solve the above problems, a plastic crushing and screening device is proposed. Utility Model Content
[0004] The purpose of this invention is to provide a plastic crushing and screening device that solves the problem that existing screening devices generally use vibrating screening plates and centrifugal force screening in screening cylinders. For screening cylinders, under the action of centrifugal force, plastic particles adhere to the inner wall of the screening cylinder. Some smaller particles can pass through the holes of the screening cylinder and be screened out, but some larger plastic particles will adhere to the inner wall of the screening cylinder or even block the holes of the screening cylinder, causing blockage of the holes of the screening cylinder and thus affecting the screening efficiency of the screening cylinder.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0006] This utility model relates to a plastic crushing and screening device, comprising a screening box and a connecting cover. A main gear, several auxiliary gears, and a support are connected to the upper surface of the connecting cover. The support is fixedly connected to the connecting cover. A motor is fixedly installed inside the support. The output end of the motor is fixedly connected to the main gear. A first rotating rod is fixedly connected to the bottom surface of the main gear. A screening cylinder is fixedly connected to the bottom end of the first rotating rod. A second rotating rod is fixedly connected to the bottom surface of the auxiliary gears. A partial gear is fixedly connected to the bottom end of the second rotating rod. Limiting rods are fixedly connected to both sides of the inner wall of the screening box. Springs and limiting plates are installed on the circumferential sides of the limiting rods. A rack is fixedly connected to one surface of the limiting plate, and a striking block is fixedly connected to one surface of the rack.
[0007] Preferably, the bottom surface of the screening box is provided with a discharge port, a number of support columns are fixedly connected to the bottom surface of the screening box, and guide plates are fixedly connected to both sides of the inner wall of the screening box.
[0008] Preferably, one end of the limiting rod is fixedly connected to a limiting block.
[0009] Preferably, the limiting plate and the limiting rod are slidably engaged, and both the first rotating rod and the second rotating rod are rotatably connected to the connecting cover.
[0010] Preferably, both of the auxiliary gears mesh with the main gear, and a cover plate is hinged to the upper surface of the screening cylinder.
[0011] Preferably, the upper surface of the connecting cover and the upper surface of the screening box are provided with several threaded grooves, and bolts are installed in the threaded grooves. The connecting cover and the screening box are threadedly engaged with the bolts.
[0012] Preferably, the position of the guide plate is adapted to the position of the discharge port.
[0013] This utility model has the following beneficial effects:
[0014] 1. This utility model incorporates a partial gear, rack, striking block, spring, and screening cylinder. Plastic granules to be screened are fed into the screening cylinder. A motor drives the main gear to rotate, which in turn causes the first rotating rod to rotate the screening cylinder. Centrifugal force is used to screen the plastic granules. During screening, the main gear meshes with the auxiliary gear, causing two second rotating rods to rotate. These second rotating rods then engage the partial gear. When the partial gear meshes with the rack, it pushes the rack towards the spring, further compressing the spring through a limiting plate. When the partial gear does not mesh with the rack, the spring returns to its original position, pushing the rack to drive the striking block to strike the screening cylinder, preventing blockage of the screening cylinder's holes and thus improving the equipment's screening efficiency.
[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0018] Figure 2This is a schematic diagram of the structure of the utility model from above;
[0019] Figure 3 This is a cross-sectional structural diagram of the present invention;
[0020] Figure 4 This is a schematic diagram of the striking mechanism of this utility model.
[0021] The components represented by each number in the attached diagram are listed below: 1. Screening box; 2. Connecting cover; 3. Motor; 4. Main gear; 5. Secondary gear; 6. Bolt; 7. Support column; 8. First rotating rod; 9. Screening cylinder; 10. Second rotating rod; 11. Cover plate; 12. Guide plate; 13. Discharge port; 14. Partial gear; 15. Limiting rod; 16. Spring; 17. Limiting plate; 18. Rack; 19. Striking block; 20. Limiting block. Detailed Implementation
[0022] 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 skilled in the art without creative effort are within the protection scope of the present utility model.
[0023] In the description of this utility model, it should be understood that the terms "upper", "middle", "outer", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0024] Please see Figure 1-Figure 4As shown, this utility model is a plastic crushing and screening device, including a screening box 1 and a connecting cover 2. A main gear 4, several auxiliary gears 5, and a bracket are connected to the upper surface of the connecting cover 2. The bracket is fixedly connected to the connecting cover 2. A motor 3 is fixedly installed inside the bracket. The output end of the motor 3 is fixedly connected to the main gear 4. A first rotating rod 8 is fixedly connected to the bottom surface of the main gear 4. A screening cylinder 9 is fixedly connected to the bottom end of the first rotating rod 8. A second rotating rod 10 is fixedly connected to the bottom surface of the auxiliary gears 5. A partial gear 14 is fixedly connected to the bottom end of the second rotating rod 10. Limiting rods 15 are fixedly connected to both sides of the inner wall of the screening box 1. Springs 16 and limiting plates 17 are installed on the circumferential sides of the limiting rods 15. A rack 18 is fixedly connected to one surface of the limiting plate 17, and a striking block 19 is fixedly connected to one surface of the rack 18. By setting the partial gear... The system consists of a wheel 14, a rack 18, a striking block 19, a spring 16, and a screening cylinder 9. Plastic granules to be screened are fed into the screening cylinder 9. The motor 3 drives the main gear 4 to rotate, which in turn causes the first rotating rod 8 to rotate the screening cylinder 9. Centrifugal force is used to screen the plastic granules. During screening, the main gear 4 meshes with the auxiliary gear 5, causing the two second rotating rods 10 to rotate. The second rotating rods 10 drive the partial gear 14 to mesh. When the partial gear 14 meshes with the rack 18, it pushes the rack 18 towards the side of the spring 16, further squeezing the spring 16 through the limiting plate 17. When the partial gear 14 does not mesh with the rack 18, the spring 16 returns to its original position, pushing the rack 18 to drive the striking block 19 to strike the screening cylinder 9, preventing blockage of the screening cylinder 9 and thus affecting the screening efficiency of the equipment.
[0025] The bottom surface of the screening box 1 is provided with a discharge port 13, and several support columns 7 are fixedly connected to the bottom surface of the screening box 1. Guide plates 12 are fixedly connected to both sides of the inner wall of the screening box 1.
[0026] One end of the limiting rod 15 is fixedly connected to the limiting block 20.
[0027] The limiting plate 17 and the limiting rod 15 are slidably engaged, and the first rotating rod 8 and the second rotating rod 10 are rotatably connected to the connecting cover 2.
[0028] Both auxiliary gears 5 mesh with the main gear 4, and a cover plate 11 is hinged to the upper surface of the screening cylinder 9.
[0029] The upper surface of the connecting cover 2 and the upper surface of the screening box 1 are provided with several threaded grooves, and bolts 6 are installed in the threaded grooves. The connecting cover 2 and the screening box 1 are threadedly engaged with the bolts 6.
[0030] The position of the guide plate 12 is adapted to the position of the discharge port 13.
[0031] Example:
[0032] like Figure 1-Figure 4As shown, the method of using the plastic crushing and screening device of this utility model is as follows: When using this utility model, first loosen the bolt 6 to disassemble the connecting cover 2, then open the cover plate 11, put the plastic particles to be screened into the screening cylinder 9, then put the screening cylinder 9 into the screening box 1, tighten the bolt 6 to fix the connecting cover 2, at this time the position of the rack 18 is adapted to the position of the local gear 14, the motor 3 drives the main gear 4 to rotate, further causing the first rotating rod 8 to drive the screening cylinder 9 to rotate, and the screening of plastic particles is achieved by centrifugal force. During the screening process, the main gear 4 By meshing with the secondary gear 5, the two second rotating rods 10 rotate. The second rotating rods 10 drive the partial gear 14 to mesh. When the partial gear 14 meshes with the rack 18, it pushes the rack 18 to move towards the side of the spring 16, and further squeezes the spring 16 through the limiting plate 17. When the partial gear 14 does not mesh with the rack 18, the spring 16 returns to its original position, and pushes the rack 18 to drive the striking block 19 to strike the screening cylinder 9, so as to avoid the holes of the screening cylinder 9 being blocked and affecting the screening efficiency of the equipment. The screened plastic particles slide out of the discharge port 13 through the guide plate 12 for discharge.
[0033] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0034] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A plastic crushing and screening device, comprising a screening box (1) and a connecting cover (2), characterized in that, The upper surface of the connecting cover (2) is connected to a main gear (4), several auxiliary gears (5) and a bracket. The bracket is fixedly connected to the connecting cover (2). A motor (3) is fixedly installed inside the bracket. The output end of the motor (3) is fixedly connected to the main gear (4). A first rotating rod (8) is fixedly connected to the bottom surface of the main gear (4). A screening cylinder (9) is fixedly connected to the bottom end of the first rotating rod (8). A second rotating rod (10) is fixedly connected to the bottom surface of the auxiliary gear (5). A partial gear (14) is fixedly connected to the bottom end of the second rotating rod (10). Limiting rods (15) are fixedly connected to both sides of the inner wall of the screening box (1). A spring (16) and a limiting plate (17) are installed on the circumferential side of the limiting rod (15). A rack (18) is fixedly connected to one surface of the limiting plate (17). A striking block (19) is fixedly connected to one surface of the rack (18).
2. The plastic crushing and screening device according to claim 1, characterized in that, The bottom surface of the screening box (1) is provided with a discharge port (13), and a number of support columns (7) are fixedly connected to the bottom surface of the screening box (1). Guide plates (12) are fixedly connected to both sides of the inner wall of the screening box (1).
3. The plastic crushing and screening device according to claim 1, characterized in that, One end of the limiting rod (15) is fixedly connected to the limiting block (20).
4. The plastic crushing and screening device according to claim 1, characterized in that, The limiting plate (17) and the limiting rod (15) are slidably engaged, and the first rotating rod (8) and the second rotating rod (10) are rotatably connected to the connecting cover (2).
5. The plastic crushing and screening device according to claim 1, characterized in that, Both of the auxiliary gears (5) mesh with the main gear (4), and the upper surface of the screening cylinder (9) is hinged with a cover plate (11).
6. The plastic crushing and screening device according to claim 1, characterized in that, The upper surface of the connecting cover (2) and the upper surface of the screening box (1) are provided with several threaded grooves, and bolts (6) are installed in the threaded grooves. The connecting cover (2) and the screening box (1) are threadedly engaged with the bolts (6).
7. A plastic crushing and screening device according to claim 2, characterized in that, The position of the guide plate (12) is adapted to the position of the discharge port (13).