Sealing dustproof device of double-shaft shredding machine
By designing a dust collection box and an automatic dust removal device on the dual-shaft shredder, the problem of ineffective traditional dust control measures has been solved, achieving efficient dust control and a healthy working environment, and improving production efficiency and equipment operation stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-23
- Publication Date
- 2026-04-03
AI Technical Summary
Traditional dual-shaft shredders have limited dust control measures and cannot completely seal the equipment, leading to dust diffusion and increased health risks to operators.
A sealed dustproof device comprising a shredder body and a dust collection box was designed. A suction fan is used to draw dust into the dust collection box through a suction pipe, and an automatic dust cleaning device is provided to prevent filter clogging and ensure long-term stable operation.
It effectively reduces dust diffusion, lowers dust concentration in the workshop, provides a healthy working environment, improves production efficiency, and reduces maintenance frequency and labor costs.
Smart Images
Figure CN224072964U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of dual-shaft shredders, specifically a sealing and dustproof device for a dual-shaft shredder. Background Technology
[0002] A dual-shaft shredder is a mechanical device used to crush various materials into smaller sizes. Its working principle is driven by an electric motor or hydraulic motor. A reducer reduces the high speed of the motor to the low speed of the cutter shaft to obtain high torque. The cutter, made of special alloy steel, is controlled by a programmable logic controller to perform shearing, squeezing and tearing actions on the material entering the shredding chamber, crushing it into smaller sizes. It is mainly used in waste treatment, resource recycling and industrial production.
[0003] Traditional dust control for shredders typically employs partial dust covers and simple dust collection devices to seal and collect dust generated during the operation of a twin-shaft shredder. However, these two dust control measures have several shortcomings in practical use. For example, partial dust covers are generally made of thin steel plates and installed in areas where dust generation is concentrated, such as above the cutter shaft. While they can block dust diffusion within a certain range and reduce dust pollution in the workshop, they cannot completely seal the equipment, and some dust will still escape from the gaps or openings of the dust cover. Simple dust collection devices are usually small baghouse vacuum cleaners. They are placed near the shredding area with the suction port and use the suction force generated by the fan to suck the raised dust into the bag. The bag needs to be cleaned frequently, otherwise it will affect the dust collection and air filtration effects, leading to an increase in dust in the workshop. This exposes operators to a high-dust environment for extended periods, significantly increasing the risk of respiratory diseases such as pneumoconiosis. However, frequent cleaning requires machine shutdown, which significantly reduces processing speed. Utility Model Content
[0004] One of the technical problems this application aims to solve is that the dust prevention measures used in traditional shredders, such as partial dust covers and simple dust collection devices, are usually limited in effectiveness and have certain limitations.
[0005] To solve the above-mentioned technical problems, this application provides a sealing and dustproof device for a dual-shaft shredder, including a shredder body and a dust collection box. A suction pipe is fixedly connected between the shredder body and the dust collection box. The dust collection box includes a box body, with a suction fan fixedly connected to one end of the box body. A frame plate is fixedly installed in the middle of the box body, and a filter screen is snapped into the middle of the frame plate. Elastic support plates are fixedly installed in the middle of both sides of one end of the frame plate. A rubber plate is fixedly installed on one side of each of the two elastic support plates, and the rubber plate abuts against the surface of the filter screen. A fixing rod is fixedly installed on the upper part of both sides of one end of the box body. A bracket is fixedly installed on the lower part of both sides of one end of the housing. A rotating shaft is rotatably installed in the middle of one side of each of the two brackets. A rotary groove is opened on the surface of each of the two rotating shafts. A rotating ring is fixedly installed at the upper end of each of the two rotating shafts. A belt is connected between the two rotating rings. A motor is fixedly installed at the upper end of one of the brackets. The output end of the motor is fixedly connected to the upper end of one of the rotating rings. A swing rod is rotatably connected to one end of each of the two fixed rods. One side of each swing rod is slidably engaged with the rotary groove. The other end of each swing rod abuts against the surface of the elastic support plate.
[0006] In some embodiments, a lid is snapped onto the upper end of the housing.
[0007] In some embodiments, the upper end of the shredder body is rotatably connected to a cover plate via a hinge, and a feed pipe is fixedly connected to the middle of the upper end of the cover plate.
[0008] In some embodiments, one end of the suction tube is connected to and fixed in the middle of one side of the feed tube, and the other end of the suction tube is connected to and fixed in the dust collection box at the end away from the suction fan.
[0009] In some embodiments, a feeding hopper is connected and fixed to the lower end of the shredder body.
[0010] In some embodiments, a support frame is fixedly connected to the outer side of the middle part of the hopper.
[0011] In some embodiments, motors are fixedly installed on both sides of the middle part of one end of the shredder body, and the output ends of the two motors are fixedly connected to moving blades through the shredder body.
[0012] In some embodiments, the other ends of both moving blades are rotatably connected to one side of the inner wall of the shredder body.
[0013] This utility model has at least the following beneficial effects:
[0014] 1. In use, the shredder body and the dust collection box are connected by a suction pipe. Utilizing the suction force generated by the fan, dust generated during the shredding process is promptly drawn from the feed pipe into the dust collection box, effectively reducing dust dispersion in the workshop environment. The dust collection box is equipped with a frame plate and filter screen to filter the inhaled dust-laden gas. Simultaneously, a unique automatic dust removal device uses a motor-driven rotating ring, shaft, and swing rod to cause the elastic support plate to drive the rubber plate to beat the filter screen, preventing clogging and ensuring the long-term stable operation of the dust collection system, thus improving dust handling efficiency.
[0015] 2. In use, this utility model features a seamless design from material input at the feed inlet to dust being drawn into the dust collection box and filtered. This integrated system demonstrates significant effectiveness in actual production scenarios. It effectively controls the large amount of dust that would otherwise be scattered and blown around in the workshop due to material tearing, thereby drastically reducing dust concentration and creating a clean and healthy working space for operators, making it highly practical.
[0016] 3. When using this utility model, the dust collection box cover adopts a snap-fit design, which can ensure the sealing of the dust collection box during equipment operation and prevent dust leakage; it can be easily opened when maintaining or cleaning the internal dust, which is convenient for the inspection and cleaning of internal components. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall appearance and structure of the present utility model;
[0018] Figure 2 This is a schematic diagram of the internal structure of the dust collection box of this utility model;
[0019] Figure 3 This is a schematic diagram showing the connection relationship between the swing rod and the elastic support plate of this utility model;
[0020] Figure 4 This is a schematic diagram showing the connection relationship between the swing rod and the rotary groove of this utility model;
[0021] Figure 5 This is a three-dimensional structural diagram of the shredder body of this utility model.
[0022] In the diagram: 1. Shredder body; 11. Cover plate; 12. Feed pipe; 13. Motor II; 14. Moving blade; 15. Support frame; 16. Feed hopper; 20. Suction pipe; 2. Dust collection box; 21. Box body; 22. Box cover; 23. Frame plate; 24. Filter screen; 25. Suction fan; 26. Elastic support plate; 27. Rubber plate; 28. Bracket; 29. Rotary shaft; 30. Rotary groove; 31. Motor I; 32. Rotary ring; 33. Belt; 34. Fixed rod; 35. Swing rod. Detailed Implementation
[0023] 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.
[0024] Example 1: Please refer to Figure 1-5 This utility model provides a technical solution: a sealing and dustproof device for a dual-shaft shredder, including a shredder body 1 and a dust collection box 2. A suction pipe 20 is fixedly connected between the shredder body 1 and the dust collection box 2. The dust collection box 2 includes a box body 21. A suction fan 25 is fixedly connected to one end of the box body 21. A frame plate 23 is fixedly installed in the middle of the box body 21. A filter screen 24 is snapped into the middle of the frame plate 23. Elastic support plates 26 are fixedly installed in the middle of both sides of one end of the frame plate 23. A rubber plate 27 is fixedly installed on one side of each of the two elastic support plates 26. The rubber plate 27 abuts against the surface of the filter screen 24. A fixing rod 34 is fixedly installed on the upper part of both sides of one end of the box body 21. 1. A bracket 28 is fixedly installed on the lower part of both sides of one end. A rotating shaft 29 is rotatably installed in the middle of one side of each bracket 28. A rotary groove 30 is opened on the surface of each rotating shaft 29. A rotating ring 32 is fixedly installed at the upper end of each rotating shaft 29. A belt 33 is connected between the two rotating rings 32. A motor 31 is fixedly installed at the upper end of one of the brackets 28. The output end of the motor 31 is fixedly connected to the upper end of one of the rotating rings 32. A swing rod 35 is rotatably connected to one end of each of the two fixed rods 34. One side of each swing rod 35 is slidably engaged with the rotary groove 30. The other end of each swing rod 35 abuts against the surface of the elastic support plate 26.
[0025] In this embodiment, the shredder body 1 is connected to the dust collection box 2 via a suction pipe 20. A suction fan 25 installed at one end of the dust collection box 2 generates strong suction, quickly and effectively drawing dust generated during shredder operation into the dust collection box 2 through the suction pipe 20. This significantly reduces dust diffusion in the workshop environment, ensuring a good working environment. A filter screen 24 is snapped into the frame plate 23 in the middle of the dust collection box 2, filtering the inhaled dust-laden gas. The filter screen 24 intercepts most dust particles, allowing purified air to be discharged, preventing secondary pollution of the environment. The dust remains inside the filter screen 24 and dust collection box 2, away from the suction fan 25, facilitating later centralized cleaning. To address the issue of filter screen 24 potentially becoming clogged after prolonged operation, leading to poor filtration, an automatic dust removal system is implemented. When in use, the starting motor 31 drives one of the rotating rings 32 to rotate. Through the belt 33, the two rotating rings 32 inside the housing 21 rotate synchronously. The rotating rings 32 drive the rotating shaft 29 to rotate, and the swirling groove 30 rotates with the rotating shaft 29. At the same time, the sliding engagement between the swing rod 35 and the swirling groove 30 causes the swing rod 35 to swing regularly. The swing of the swing rod 35 intermittently presses against the elastic support plate 26. The elasticity of the elastic support plate 26 comes from the expansion and contraction of the internal spring structure. The elastic support plate 26 drives the rubber plate 27 to beat the surface of the filter screen 24, shaking off the dust attached to the filter screen 24, preventing the filter screen 24 from clogging, and ensuring the long-term stable filtration performance of the filter screen 24. There is no need for frequent manual disassembly and cleaning of the filter screen 24, which can effectively save maintenance time and labor costs.
[0026] Example 2: As Figure 1-5 As shown, a box cover 22 is snapped onto the upper end of the box body 21. A cover plate 11 is rotatably connected to the upper end of the shredder body 1 via a hinge. A feed pipe 12 is fixedly connected to the middle of the upper end of the cover plate 11. One end of the suction pipe 20 is fixedly connected to the middle of one side of the feed pipe 12, and the other end of the suction pipe 20 is fixedly connected to the end of the dust collection box 2 away from the suction fan 25. A hopper 16 is fixedly connected to the lower end of the shredder body 1. A support frame 15 is fixedly connected to the outer side of the middle of the hopper 16. Motors 13 are fixedly installed on both sides of the middle of one end of the shredder body 1. The output ends of the two motors 13 are fixedly connected to moving blades 14 through the shredder body 1. The other ends of the two moving blades 14 are rotatably connected to one side of the inner wall of the shredder body 1.
[0027] In this embodiment, the cover 22, which is snapped onto the upper end of the housing 21, facilitates the maintenance and cleaning of the dust collection box 2. When it is necessary to inspect, clean, or replace components inside the dust collection box 2, such as the filter screen 24, the cover 22 can be easily opened to quickly access the internal structure, saving maintenance time. At the same time, when the equipment is running normally, the cover 22 is tightly snapped on to ensure the airtightness of the dust collection box 2 and prevent the collected dust from leaking. The cover plate 11, which is rotatably connected to the upper end of the shredder body 1 via a hinge, provides greater flexibility for the feeding operation. The feed pipe 12 is connected and fixed in the middle of the upper end of the cover plate 11, forming a continuous and efficient feeding channel. One end of the suction pipe 20 is connected and fixed in the middle of one side of the feed pipe 12, and the other end is connected and fixed in the end of the dust collection box 2 away from the suction fan 25. This connection method makes the suction fan 25 generate The suction force can be effectively applied to the inside of the shredder body 1. When the material is shredded and dust is generated inside the shredder, the dust can be quickly sucked into the dust collection box 2 through the connecting channel formed by the feed pipe 12 and the suction pipe 20, ensuring timely collection of dust and further improving the dust prevention effect of the entire equipment. This effectively reduces the harm caused by dust to the equipment and the environment. Two motors 13 are fixedly installed on both sides of the middle of one end of the shredder body 1, each driving the moving blade 14 to rotate. The dual-motor drive can provide the moving blade 14 with stronger and more stable power, so that the moving blade 14 can generate greater shearing and extrusion forces when shredding materials at high speed. It can shred materials of different hardness and toughness more efficiently, improving the material handling capacity and production efficiency of the equipment. The crushed material will be discharged from the feed hopper 16.
[0028] like Figure 1-5As shown, the operator feeds material into the shredder body 1 through the feed pipe 12. The design of the feed pipe 12 and the cover plate 11 makes the feeding operation flexible and convenient, and can reduce material spillage to a certain extent. Then, the second motor 13, which is installed on both sides of the middle of one end of the shredder body 1, is started. The output end of the second motor 13 drives the moving blade 14, which is fixedly connected to it, to rotate at high speed. The two moving blades 14 rotate in opposite directions, shearing, squeezing and tearing the material entering the shredder body 1, breaking the material into smaller particles. A large amount of dust is generated during the shredding process. At this time, the suction fan 25 at one end of the dust collection box 2 starts and generates a strong suction force. Since one end of the suction pipe 20 is connected to the middle of one side of the feed pipe 12, and the other end is connected to the end of the dust collection box 2 away from the suction fan 25, the suction force generated by the suction fan 25 acts on the inside of the shredder body 1 through the suction pipe 20, sucking the dust generated during the shredding process into the suction pipe 20, and then into the dust collection box 2. After the dust enters the dust collection box 2, it encounters the filter screen 24 installed in the middle of the frame plate 23. The filter screen 24 filters the dust-laden gas, intercepting most of the dust particles, allowing the purified air to continue passing through the dust collection box 2 and finally being discharged from the suction fan 25, thus preventing secondary pollution of the environment by dust. To prevent the filter screen 24 from clogging, the dust collection box 2 is also equipped with an automatic dust removal device. The motor 31 drives one of the rotating rings 32 to rotate, and through the belt 33, both rotating rings 32 rotate synchronously, thereby driving the rotating shaft 29 to rotate. As the rotating shaft 29 rotates, the slidable engagement between the gyratory groove 30 on its surface and the swing rod 35 causes the swing rod 35 to oscillate rhythmically. The oscillation of the swing rod 35 intermittently presses against the elastic support plate 26, whose elasticity comes from the expansion and contraction of its internal spring structure. The elastic support plate 26 causes the rubber plate 27 to beat against the surface of the filter screen 24, shaking off the dust adhering to the filter screen 24. The shredded material is then discharged from the feed hopper 16 at the lower end of the shredder body 1. The support frame 15 on the outer side of the middle part of the hopper 16 provides stable support for the hopper 16, ensuring that the hopper 16 will not deform or shift due to the weight and impact of the material during the discharge process, thus ensuring smooth discharge. When it is necessary to maintain, clean or replace the filter screen 24 and other parts inside the dust collection box 2, the cover 22 that is snapped on the upper end of the box body 21 can be opened to facilitate operation inside the dust collection box 2.
[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.
Claims
1. A dustproof sealing device of a double-shaft shredder, comprising a shredder body (1) and a dust collecting box (2), a suction pipe (20) being fixedly communicated between the shredder body (1) and the dust collecting box (2), characterized in that: The dust collecting box (2) comprises a box body (21), one end of the box body (21) is communicated and fixed with a air suction fan (25), the middle part of the box body (21) is fixedly installed with a frame plate (23), the middle part of the frame plate (23) is clamped and inserted with a filter screen (24), the middle part of the two sides of one end of the frame plate (23) is fixedly installed with an elastic supporting plate (26), the one side of the two elastic supporting plates (26) is fixedly installed with a rubber plate (27), the rubber plate (27) is abutted with the surface of the filter screen (24), the upper part of the two sides of one end of the box body (21) is fixedly installed with a fixed rod (34), the lower part of the two sides of one end of the box body (21) is fixedly installed with a support (28), the middle part of the one side of the two supports (28) is rotatably installed with a rotating shaft (29), the surface of the two rotating shafts (29) is provided with a spiral groove (30), the upper end of the two rotating shafts (29) is fixedly installed with a rotating ring (32), the two rotating rings (32) are transmissionally connected with a belt (33), the upper end of one of the supports (28) is fixedly installed with a motor (31), the output end of the motor (31) is fixedly connected with the upper end of one of the rotating rings (32), the one end of the two fixed rods (34) is rotatably connected with a swing rod (35), the one side of the two swing rods (35) is slidably clamped between the spiral grooves (30), the other end of the two swing rods (35) is abutted with the surface of the elastic supporting plate (26).
2. A dust sealing device for a double shaft shredder as claimed in claim 1, characterized in that: The upper end of the box body (21) is clamped with a box cover (22).
3. A dust sealing device for a double shaft shredder as claimed in claim 2, characterized in that: The upper end of the shredder body (1) is rotatably connected with a cover plate (11) through a hinge, and the middle part of the upper end of the cover plate (11) is communicated and fixed with a feeding pipe (12).
4. A dust sealing device for a double shaft shredder as claimed in claim 3, characterized in that: One end of the suction pipe (20) is communicated and fixed to the middle part of one side of the feeding pipe (12), and the other end of the suction pipe (20) is communicated and fixed to one end of the dust collecting box (2) away from the air suction fan (25).
5. A dust seal for a double shaft shredder as defined in claim 4, wherein: The lower end of the shredder body (1) is communicated and fixed with a lower hopper (16).
6. A dust seal for a double shaft shredder as claimed in claim 5, wherein: The outer side of the middle part of the lower hopper (16) is fixedly connected with a supporting frame (15).
7. A sealing dust-proof device for a double shaft shredder according to claim 6, characterized in that: The middle part of one end of the shredder body (1) is fixedly installed with a motor (13) on both sides, and the output ends of the two motors (13) are fixedly connected with a moving knife (14) penetrating the shredder body (1).
8. A dust sealing device for a double shaft shredder as claimed in claim 7, characterized in that: The other end of the two moving knives (14) is rotatably connected to one side of the inner wall of the shredder body (1).