Screening mechanism of shredding machine
By introducing screening and recycling devices into the shredder, the vibration motor and lifting spiral blades are used to achieve screening and re-pulverizing of materials, solving the problem of material inhomogeneity, improving the crushing efficiency and quality, and reducing costs.
Patent Information
- Application Number
- CN202421425223.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-06-21
AI Technical Summary
The existing shredders have uneven materials during the crushing process, resulting in the need for later screening and re-pulverization, which increases processing cost and time.
A screening mechanism of a shredder is designed. Through the cooperation of the screening device and the recovery device, the vibration motor and the lifting spiral blades are used to achieve the screening and re-pulverization of the material to ensure the uniformity of the particle size.
It improves the efficiency and quality of material crushing, reduces processing costs, and achieves uniformity of material particle size and efficient processing.
Smart Images
Figure CN223042789U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of shredders, and particularly relates to a screening mechanism of a shredder. Background Technique
[0002] A shredder is a machine used for fine shredding. Generally, it is used to process unprocessed raw materials or scraps to make their sizes smaller. A typical example is to shred the scraps of plastics or rubbers and then melt and pelletize them as raw materials to remanufacture plastic bottles, tires, trash cans, etc. Shredders are applied in the plastic recycling and regeneration industry and are commonly used for crushing large-caliber PE plastic pipes of waste products, bundled plastic films, large stacks of plastic sheets, and head materials;
[0003] When crushing materials, we generally install a stacking hopper above the shredder, which not only reduces accidents but also facilitates feeding. When the shredder crushes materials, the crushing time of some materials is uneven, resulting in the need to screen out the uneven materials later and re-shred them, thus increasing the processing cost and being time-consuming and laborious. Therefore, we need to propose a screening mechanism for a shredder. Content of the Utility Model
[0004] The purpose of the utility model is to provide a screening mechanism of a shredder. After the materials are shredded, they first pass through the screening mechanism to screen the crushed materials, so as to export the evenly crushed materials and re-convey the unevenly crushed materials into the stacking hopper for re-crushing treatment, improving the efficiency of material crushing and the uniformity of the particle size of the crushed materials, so as to solve the problems raised in the above background technique.
[0005] To achieve the above purpose, the utility model provides the following technical solution: A screening mechanism of a shredder, including a screening device, the upper end of the screening device is communicated with a material guiding channel, and the upper end of the material guiding channel is communicated with a shredding device. A recycling device is arranged on one side of the screening device, and a conveying device is arranged at the lower end of the screening device;
[0006] The screening device includes a screening box and a sieve plate arranged in the inner cavity of the screening box. Guide grooves are respectively opened on both sides of one end of the upper surface of the sieve plate, and movable blocks are slidably connected in the two groups of guide grooves. Damping springs are rotatably connected to both sides of the movable block, and the ends of the damping springs far away from the movable block are rotatably connected to fixed blocks. Each two groups of fixed blocks are respectively fixedly connected to both sides of the inner cavity of the screening box. Limiting blocks are integrally formed on the other two sides of the movable block, and limiting grooves for the limiting blocks to slide are respectively opened on both sides of the inner cavity of the guide groove. A vibration motor is fixedly connected to one end of the lower surface of the sieve plate, and one end of both sides of the sieve plate is hinged to both sides of the inner cavity of the screening box through hinge rods.
[0007] Preferably, a discharge hole is formed on one side of the screening box, the extension line of the sieve plate intersects with the horizontal plane, every two groups of fixing blocks are arranged in parallel, and the axes of the damping springs on both sides of the movable block are arranged on the same straight line.
[0008] Preferably, the recycling device includes a collecting hopper connected to one end of the discharge port, and a recycling channel is connected to the lower end of the collecting hopper, and a discharge pipe is connected to the upper end outside the recycling channel.
[0009] Preferably, a second motor is arranged at the lower end of the recycling channel, the output shaft of the second motor is drivingly connected to a rotating shaft, the upper end of the rotating shaft penetrates through the recycling channel and is rotatably connected to the top of the inner cavity of the recycling channel, and a lifting screw blade is fixedly connected to the outside of the rotating shaft.
[0010] Preferably, the shredding device includes a shredding box fixedly connected to the upper end of the material guiding channel, a stacking hopper is connected to the upper end of the shredding box, a card slot for the recycling channel to be embedded is formed on one side of the stacking hopper, and two groups of crushing rollers are rotatably connected to the inner cavity of the shredding box, and opposite ends of the two groups of crushing rollers penetrate through the shredding box and are driven by a first motor.
[0011] Preferably, the conveying device includes vertical plates welded to the lower ends of two adjacent sides of the screening box and the discharge hole, and two groups of guide rollers are rotatably connected to the opposite sides of the two groups of vertical plates, the two groups of guide rollers are drivingly connected by a conveyor belt, one end of one of the guide rollers penetrates through one of the vertical plates and is driven by a third motor, and bottom plates are welded to the lower ends of the opposite sides of the two groups of vertical plates and the two groups of guide rollers.
[0012] Preferably, the cross-section of the upper end opening of the material guiding channel is the same as that of the lower end opening of the material guiding channel, and the cross-section of the middle part of the inner cavity of the material guiding channel is smaller than that of the lower end opening of the material guiding channel.
[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0014] The present utility model mainly through the cooperation between the screening device and the recycling device, after the material is crushed by the shredding device, it falls on the sieve plate through the material guiding channel, the vibrating motor vibrates the sieve plate so that the crushed material with qualified particle size falls on the conveyor belt and is conveyed to the next process, the material with larger particle size will fall into the recycling channel through the discharge hole and the collecting hopper under the action of gravity and vibration, the second motor drives the rotating shaft to drive the lifting screw blade to convey the material to the top of the recycling channel and then discharge it to the stacking hopper through the discharge pipe, and the crushing work is carried out again, so that the size of the conveyed material is uniform, the crushing quality of the material is improved, time and labor are saved, and the processing cost of the material is reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is the overall three-dimensional structural schematic diagram of the present utility model;
[0016] Figure 2 Schematic cross-sectional structure diagram of the screening device of the present utility model;
[0017] Figure 3 Schematic structure diagram of the shredding device of the present utility model;
[0018] Figure 4 Schematic structure diagram of the conveying device of the present utility model;
[0019] Figure 5 is Figure 2 Enlarged schematic structure diagram at position A in
[0020] In the figure: 100, screening device; 101, screening box; 102, discharge port; 103, sieve plate; 104, hinge rod; 105, guide groove; 1051, limit groove; 106, movable block; 1061, limit block; 107, fixed block; 108, damping spring; 109, vibration motor; 200, material guiding channel; 300, shredding device; 301, shredding box; 302, crushing roller; 303, first motor; 304, stacking hopper; 305, clamping groove; 400, recycling device; 401, recycling channel; 402, aggregate hopper; 403, discharge pipe; 404, second motor; 405, rotating shaft; 406, lifting screw blade; 500, conveying device; 501, vertical plate; 502, guide roller; 503, conveyor belt; 504, third motor; 505, bottom plate. Specific embodiments
[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0022] Please refer to Figures 1-5 , the present utility model provides a technical solution: a screening mechanism of a shredder, including a screening device 100, a material guiding channel 200 is connected to the upper end of the screening device 100, and a shredding device 300 is connected to the upper end of the material guiding channel 200. A recycling device 400 is arranged on one side of the screening device 100, and a conveying device 500 is arranged at the lower end of the screening device 100;
[0023] The screening device 100 includes a screening box 101 and a sieve plate 103 disposed inside the cavity of the screening box 101. On both sides of one end of the upper surface of the sieve plate 103, guiding grooves 105 are formed. And in both groups of guiding grooves 105, movable blocks 106 are slidably connected. On both sides of the movable block 106, damping springs 108 are rotatably connected. And the ends of the damping springs 108 away from the movable block 106 are rotatably connected to fixed blocks 107. Every two groups of fixed blocks 107 are respectively fixedly connected to both sides of the inner cavity of the screening box 101. On the other two sides of the movable block 106, limiting blocks 1061 are integrally formed. On both sides of the inner cavity of the guiding groove 105, limiting grooves 1051 for the limiting blocks 1061 to slidably connect are formed. At one end of the lower surface of the sieve plate 103, a vibration motor 109 is fixedly connected. And at one end of both sides of the sieve plate 103, they are respectively hinged to both sides of the inner cavity of the screening box 101 through hinge rods 104.
[0024] During use, the material to be crushed is put into the stacking hopper 304. Two groups of first motors 303 drive two groups of crushing rollers 302 to rotate relatively, so as to crush the material. The crushed material falls on the sieve plate 103 through the material guiding channel 200. The vibration motor 109 vibrates to drive the sieve plate 103 to make a flipping vibration within a certain range with the hinge rod 104 as the axis, so that the material with qualified crushing particle size falls on the conveyor belt 503, and the third motor 504 drives the guide rollers 502 to convey the material on the conveyor belt 503 to the next process. At the same time, the material with unqualified particle size and size falls into the aggregate hopper 402 through the material dropping hole under the action of gravity and vibration. The second motor 404 drives the rotating shaft 405 to drive the lifting spiral blade 406 to convey the material piled up at the lower end of the aggregate hopper 402, so that after passing through the recovery channel 401, it is discharged again into the stacking hopper 304 through the discharge pipe 403 for secondary crushing, thereby improving the processing efficiency of the material, ensuring that the particle size of the crushed material is uniform, improving the quality of the crushed material, saving time and effort, and reducing costs.
[0025] On one side of the screening box 101, a discharge hole is formed. The extension line of the sieve plate 103 intersects with the horizontal plane. Every two groups of fixed blocks 107 are arranged in parallel, and the axes of the damping springs 108 on both sides of the movable block 106 are arranged on the same straight line. Through the discharge port 102, it is convenient to gather the screened material, so as to facilitate the re-crushing of the material. And through the damping spring 108, the reset efficiency of the sieve plate 103 after vibration is accelerated, and the service life of the sieve plate 103 is improved.
[0026] The recovery device 400 includes an aggregate hopper 402 connected to one end of the discharge port 102. And the lower end of the aggregate hopper 402 is connected to a recovery channel 401. The outer upper end of the recovery channel 401 is connected to a discharge pipe 403. Through the aggregate hopper 402, it is convenient to collect the material and convey it by the lifting spiral blade 406, so as to facilitate the re-crushing of the material and improve the processing efficiency of the material.
[0027] A second motor 404 is provided at the lower end of the recovery channel 401, and the output shaft of the second motor 404 is drivingly connected to a rotating shaft 405. The upper end of the rotating shaft 405 penetrates through the recovery channel 401 and is rotatably connected to the top of the inner cavity of the recovery channel 401. A lifting screw blade 406 is fixedly connected to the outer side of the rotating shaft 405. By driving the rotating shaft 405 through the second motor 404, the lifting screw blade 406 is driven to rotate to convey the material upward, so as to re-crush the material that fails to meet the crushing standard, improve the processing quality of the material, and make the particle size of the crushed material uniform.
[0028] The shredding device 300 includes a shredding box 301 fixedly connected to the upper end of the material guiding channel 200. The upper end of the shredding box 301 is communicated with a stacking hopper 304. A clamping groove 305 for embedding the recovery channel 401 is formed on one side of the stacking hopper 304. Two groups of crushing rollers 302 are rotatably connected to the inner cavity of the shredding box 301. The opposite ends of the two groups of crushing rollers 302 penetrate through the shredding box 301 and are driven by a first motor 303. By means of the crushing rollers 302, the crushing efficiency of the material is increased, and the clamping groove 305 improves the stability of the recovery channel 401.
[0029] The conveying device 500 includes vertical plates 501 welded to the lower ends of the two sides adjacent to the discharge hole of the screening box 101. Two groups of guide rollers 502 are rotatably connected to the opposite sides of the two groups of vertical plates 501. The two groups of guide rollers 502 are drivingly connected by a conveyor belt 503. One end of one group of guide rollers 502 penetrates through one group of vertical plates 501 and is driven by a third motor 504. Bottom plates 505 are welded to the lower ends of the opposite sides of the two groups of vertical plates 501 and the two groups of guide rollers 502. By driving the guide rollers 502 through the third motor 504, the conveyor belt 503 is driven to rotate, so as to facilitate the conveying of the crushed material, facilitate the conveying of the crushed material to the next process, and improve the processing efficiency.
[0030] The cross-section of the upper end opening of the material guiding channel 200 is the same as that of the lower end opening of the material guiding channel 200, and the cross-section of the middle part of the inner cavity of the material guiding channel 200 is smaller than that of the lower end opening of the material guiding channel 200. The material guiding channel 200 facilitates the aggregation of the crushed material and facilitates the screening of the crushed material by the sieve plate 103.
[0031] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A screening mechanism for a shredder, comprising a screening device (100), characterized in that: The upper end of the screening device (100) is connected to a material guide channel (200), and the upper end of the material guide channel (200) is connected to a shredding device (300); a recovery device (400) is provided on one side of the screening device (100), and a conveying device (500) is provided at the lower end of the screening device (100); The screening device (100) comprises a screening box (101) and a screening plate (103) arranged in the inner cavity of the screening box (101), guide grooves (105) are provided on both sides of one end of the upper surface of the screening plate (103), and movable blocks (106) are slidably connected in the two sets of guide grooves (105), damping springs (108) are rotatably connected on both sides of the movable block (106), and one end of the damping spring (108) away from the movable block (106) is rotatably connected to a fixed block (107), and each two sets of the fixed blocks (107) are rotatably connected to each other. The blocks (107) are respectively fixedly connected to the two sides of the inner cavity of the screening box (101), the other two sides of the movable block (106) are integrally formed with limit blocks (1061), and both sides of the inner cavity of the guide groove (105) are provided with limit grooves (1051) for sliding connection of the limit blocks (1061), one end of the lower surface of the screen plate (103) is fixedly connected to a vibration motor (109), and one end of both sides of the screen plate (103) is hinged to the two sides of the inner cavity of the screening box (101) through hinge rods (104).
2. A screening mechanism for a shredder according to claim 1, characterized in that: A discharge hole is provided on one side of the screening box (101), an extension line of the screening plate (103) is arranged to intersect with a horizontal plane, each two groups of fixed blocks (107) are arranged in parallel, and the axes of the damping springs (108) on both sides of the movable block (106) are arranged in the same vertical direction.
3. The screening mechanism of a shredder according to claim 1, characterized in that: The recovery device (400) comprises a collecting hopper (402) connected to one end of the discharge port (102), and the lower end of the collecting hopper (402) is connected to a recovery channel (401), and the upper end of the outer side of the recovery channel (401) is connected to a discharge pipe (403).
4. A screening mechanism for a shredder according to claim 3, characterized in that: A second motor (404) is provided at the lower end of the recovery channel (401), and the output shaft of the second motor (404) is transmission-connected to a rotating shaft (405), and the upper end of the rotating shaft (405) passes through the recovery channel (401) and is rotationally connected to the top of the inner cavity of the recovery channel (401), and a material lifting spiral blade (406) is fixedly connected to the outer side of the rotating shaft (405).
5. The screening mechanism of a shredder according to claim 3, characterized in that: The shredding device (300) comprises a shredding box (301) fixedly connected to the upper end of the material guide channel (200), and the upper end of the shredding box (301) is connected to a material stacking hopper (304), and a slot (305) for the recycling channel (401) to be embedded is provided on one side of the material stacking hopper (304), and two groups of crushing rollers (302) are rotatably connected to the inner cavity of the shredding box (301), and opposite ends of the two groups of crushing rollers (302) both penetrate the shredding box (301) and are driven by a first motor (303).
6. The screening mechanism of a shredder according to claim 1, characterized in that: The conveying device (500) comprises a vertical plate (501) welded to the lower ends of both sides of the screening box (101) adjacent to the discharge hole, and two groups of guide rollers (502) are rotatably connected to the opposite sides of the two groups of vertical plates (501), and the two groups of guide rollers (502) are connected by transmission through a conveyor belt (503), one end of one group of guide rollers (502) passes through one group of vertical plates (501) and is driven by a third motor (504), and bottom plates (505) are welded to the lower ends of the two groups of vertical plates (501) on the opposite sides to the two groups of guide rollers (502).
7. The screening mechanism of a shredder according to claim 1, characterized in that: The cross section of the upper opening of the material guiding channel (200) is the same as the cross section of the lower opening of the material guiding channel (200), and the cross section of the middle part of the inner cavity of the material guiding channel (200) is smaller than the cross section of the lower opening of the material guiding channel (200).