Collecting device for preventing dust from accumulating, combusting and exploding

Abstract

The invention relates to a collecting device for preventing dust from accumulating, combusting and exploding, and relates to the technical field of metal saw blade machining equipment. The dust removal device comprises a ventilation pipeline and a fan communicated with the ventilation pipeline, the end, away from the dust remover, of the ventilation pipeline is communicated with a temporary storage pipe, a filter screen is arranged in the temporary storage pipe, a dust discharge hole is formed in the bottom of the temporary storage pipe in a penetrating mode, and a cover body used for sealing and covering the dust discharge hole is arranged at the bottom of the temporary storage pipe. Fiber dust is intercepted under the action of the filter screen, and fibers intercepted on the surface of the filter screen are discharged by regularly opening the cover body, so that the accumulation amount of the fibers at the filter screen is smaller than the conditions required by combustion or explosion, and even if sparks flow to the filter screen in the grinding process, the sparks cannot be combusted or exploded due to the insufficient accumulation amount of the fibers; therefore, the safety coefficient is effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of metal saw blade processing equipment, and in particular to a collection device for preventing sparks and combustible dust generated during diamond saw blade grinding from accumulating, burning and exploding. Background Art

[0002] Saw blades are thin circular cutters used to cut solid materials. During the production and processing of metal saw blades, the raw materials of the metal saw blades need to be polished by a metal saw blade polishing device.

[0003] In the related art, the metal saw blade is mainly polished by a sanding belt, and during the polishing process, the sanding belt will continuously produce fibers falling due to wear and tear and will also produce sparks. For this reason, in the related art, a ventilation duct is usually added at the polishing position, and a dust collector is installed at the end of the ventilation duct to absorb the fallen fibers.

[0004] The above-mentioned related technologies have the following defects: during actual operation, the fibers inside the dust collector continue to increase, and sparks are often generated during the grinding process. When the fibers inside the dust collector increase to a certain extent and the sparks are directly sucked into the dust collector, it is easy to cause a fire or even an explosion. The safety factor is low, so it needs to be improved. Summary of the invention

[0005] In order to improve the safety factor, the present application provides a collection device that prevents dust accumulation, combustion and explosion.

[0006] The present application provides a collection device for preventing dust accumulation, combustion and explosion, which adopts the following technical solution: A collection device for preventing dust accumulation, combustion and explosion comprises a ventilation duct and a fan connected to the ventilation duct, wherein one end of the ventilation duct away from a dust collector is connected to a temporary storage pipe, a filter is arranged inside the temporary storage pipe, a dust exhaust hole is penetrated at the bottom of the temporary storage pipe, and a cover body for sealing the dust exhaust hole is arranged at the bottom of the temporary storage pipe.

[0007] By adopting the above technical solution, fiber dust is intercepted by the filter, and the fibers intercepted on the surface of the filter are discharged by regularly opening the cover, so that the amount of fiber accumulation at the filter is less than the conditions required for combustion or explosion. Even if sparks flow to the filter during grinding, they cannot burn or explode due to insufficient fiber accumulation, thereby effectively improving the safety factor.

[0008] Preferably, a beater is provided on the top of the temporary storage tube.

[0009] By adopting the above technical solution, the flapper can periodically flap or vibrate the temporary storage pipe to cause the fiber dust accumulated on the filter to fall off. This not only helps to keep the filter unobstructed and improve the filtration efficiency, but also significantly reduces the accumulation of fiber dust in the temporary storage pipe, thereby avoiding the risk of combustion or explosion caused by sparks caused by excessive fiber dust, further improving the safety of the system.

[0010] Preferably, a conversion hole is provided through the ventilation duct, a conversion plate is slidably provided inside the conversion hole, and a conversion driving member for driving the conversion plate to slide is connected between the ventilation duct and the conversion plate; The conversion plate is penetrated by a dust suction ventilation hole, and the dust suction ventilation hole is located inside the ventilation duct. A temporary ventilation channel is also provided inside the conversion plate, and the opening directions of both ends of the temporary ventilation channel are both toward the direction of the fan and the openings of both ends of the temporary ventilation channel are both located outside the ventilation duct.

[0011] By adopting the above technical solution, the setting of the conversion plate and the conversion drive can ensure that the air enters the fan after being filtered by the filter in the dust collection working state, and introduces external air through the temporary ventilation channel in the dust exhausting state, so that the fan can maintain continuous operation and avoid safety hazards caused by shutdown. At the same time, this design can improve the automation level of the system, reduce manual intervention, and improve overall work efficiency. In the dust collection working state, the air is filtered from the filter and passes through the dust collection vents and finally flows to the fan; in the dust exhausting state, the conversion drive will drive the conversion plate to slide until the dust collection vents are located outside the ventilation duct and one end of the temporary ventilation duct is located inside the ventilation duct, and the other end is located outside the ventilation duct. At this time, the fan sucks the air outside the ventilation duct from the temporary ventilation duct into the ventilation duct; the above solution realizes the non-stop operation of the fan.

[0012] Preferably, the cover body is rotatably connected to the temporary storage tube, and a traction rope is connected between the cover body and the conversion plate.

[0013] By adopting the above technical solution, when the conversion plate moves downward to switch to the dust exhaust state, the traction rope drives the cover body downward, thereby realizing the automatic opening of the cover body in the dust exhaust state and the automatic closing of the cover body in the dust suction state. This design not only simplifies the operation process and improves work efficiency, but also ensures seamless switching between dust exhaust and dust suction states, avoiding safety hazards caused by manually opening the cover body.

[0014] Preferably, baffles are provided on both sides of the cover body, embedding grooves are provided on both sides of the dust exhaust hole of the temporary storage pipe, and the baffles are located inside the embedding grooves.

[0015] By adopting the above technical solution, the baffle can partially rotate out of the embedded groove during the rotation of the cover body, thereby limiting the fiber dust during the dust removal process, reducing the leakage of fiber dust, and playing a guiding role. At the same time, in this state, the baffle still partially remains in the embedded groove, which also makes it difficult for external sparks to contact the fiber dust from the gap between the cover body and the bottom of the temporary storage tube, thereby further improving safety performance.

[0016] Preferably, the filter screen comprises a filter plate and a filter cloth, the filter cloth is located on a side of the filter plate away from the ventilation duct, and the filter plate is penetrated by a plurality of filter holes.

[0017] By adopting the above technical solution, this structural design enables the filter cloth to effectively intercept fiber dust, while the presence of the filter holes ensures smooth airflow. The combination of the filter plate and the filter cloth not only improves the filtration efficiency, but also ensures a longer service life. In addition, the filter cloth is easy to replace as a wearing part, and is easy to maintain.

[0018] Preferably, a supporting arc surface is provided on a side of the filter plate away from the ventilation duct, and the filter cloth is in contact with the supporting arc surface.

[0019] By adopting the above technical solution, the supporting arc surface can increase the actual contact area between the filter cloth and the plurality of filter holes, thereby effectively increasing the actual working area of ​​the filter cloth and enhancing the filtering effect. In addition, in the continuous vacuuming working state, the fiber fluff can be accumulated in the area where the filter cloth is bent along the supporting arc surface, and it is not easy to move, so that the position state of the intercepted fiber fluff is more stable, which is convenient for the subsequent centralized discharge of the fiber fluff.

[0020] Preferably, the top of the filter cloth is fixed to the filter plate, and an elastic member is connected between the bottom of the filter cloth and the filter plate.

[0021] By adopting the above technical solution, the top of the filter cloth is fixed to the filter plate, and an elastic part is connected between the bottom and the filter plate. In the dust suction state, the airflow enables the filter cloth to overcome the tension of the elastic part and fit the supporting arc surface to efficiently intercept the fiber fluff; in the dust discharge state, after the airflow is cut off, the elastic part restores its deformation to straighten the filter cloth, push out the fiber fluff in the bending area, improve the fiber shedding efficiency, ensure the filter screen is clean, and reduce the risk of clogging.

[0022] Preferably, a mounting strip is provided on the top of the filter cloth, a mounting hole for inserting the mounting strip is provided on the top of the side wall of the filter plate, and a mounting clip is provided at the end of the elastic member away from the connection between the elastic member and the filter plate, and the mounting clip clamps the bottom of the filter cloth.

[0023] By adopting the above technical solution, both the top and bottom of the filter cloth can be quickly replaced. Specifically, the top of the filter cloth can be easily inserted or removed by using the insertion relationship between the mounting strip and the mounting hole, thereby realizing the detachability of the top; at the same time, the bottom of the filter cloth is clamped by the mounting clamp, which not only ensures the stability of the filter cloth, but also can be easily removed when needed, ensuring that the entire filter assembly is easy to maintain and clean. These designs significantly improve the practicality and ease of operation of the device.

[0024] Preferably, a dust box with a top opening is rotatably provided at the end of the cover body, and a dust cover is fixedly provided at the end of the cover body, and the dust cover is located inside the opening of the dust box.

[0025] By adopting the above technical solution, a dust box with a top opening is rotatably provided at the end of the cover body, and a dust cover is fixedly provided at the end of the cover body, and the dust cover is located inside the opening of the dust box. When in the dust suction state, the cover body covers the dust discharge hole, and at this time the dust cover is horizontally arranged and blocks the top opening of the dust box; when in the dust discharge state, the cover body flips downward and is tilted, and the dust cover tilts and moves to the inside of the dust box, so that the fiber dust can slide along the cover body and the dust cover to the bottom of the dust box. This design not only realizes the automatic opening and closing of the top opening of the dust box and improves the degree of automation, but also effectively prevents the leakage of fiber dust during the dust discharge process, reduces environmental pollution, and at the same time reduces the risk of external sparks contacting with fiber dust, further improving the safety performance of the device.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The setting of the filter effectively intercepts the fiber dust generated during the grinding process. The fiber on the surface of the filter is discharged by opening the cover regularly, so that the fiber accumulation at the filter is always lower than the critical value required for combustion or explosion, thereby significantly improving the safety of the system; 2. The design of the conversion plate realizes the non-stop working mode of the fan, and can still maintain air circulation inside and outside the ventilation duct in the dust removal state, ensuring the stability of the entire system during continuous operation; 3. The linkage mechanism between the cover and the conversion plate makes the automatic opening in the dust exhaust state and the automatic closing in the dust suction state more convenient and reliable, reducing the need for human intervention and improving the convenience of operation and the degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application; Figure 2 This is a structural schematic diagram for illustrating the connection relationship between the filter screen and the temporary storage pipe in the embodiment of the present application; Figure 3 This is a structural schematic diagram for illustrating the connection relationship between the filter cloth and the filter plate in the embodiment of the present application; Figure 4 This is a structural schematic diagram for illustrating the connection relationship between the filter cloth and the elastic member in the embodiment of the present application; Figure 5 This is a structural schematic diagram for reflecting the air flow direction in the vacuum state in the embodiment of the present application; Figure 6 This is a structural schematic diagram for reflecting the air flow direction and the fiber dust falling direction in the dust exhaust state in the embodiment of the present application; Figure 7 This is a structural schematic diagram for reflecting the positional relationship between the dust cover and the opening of the dust box in the dust exhaust state in the embodiment of the present application; Figure 8 It is a structural schematic diagram used to reflect the connection relationship between the baffle and the embedding groove in the embodiment of the present application in the dust collection state.

[0028] In the figure: 1. Temporary storage pipe; 11. Dust discharge hole; 12. Beater; 13. Conversion hole; 14. Conversion plate; 141. Conversion drive; 15. Dust suction ventilation hole; 16. Temporary ventilation channel; 17. Traction rope; 2. Ventilation ducts; 3. Fan; 4. filter screen; 41. filter plate; 42. filter cloth; 43. filter hole; 44. supporting arc surface; 45. mounting strip; 46. mounting hole; 47. elastic member; 48. mounting clip; 5. Cover body; 51. Baffle; 52. Groove; 53. Dust box; 54. Dust cover. DETAILED DESCRIPTION

[0029] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the present invention. The described embodiments are only possible technical implementations of the present invention, not all possible implementations. Those skilled in the art can completely combine the embodiments of the present invention to obtain other embodiments without creative work, and these embodiments are also within the scope of protection of the present invention.

[0030] The inventor of this application found that during the production and processing of metal saw blades, fiber dust generated by belt grinding is easily accumulated inside the dust collector, leading to the risk of fire or even explosion. To this end, this application mainly adopts a collection device that prevents dust accumulation, combustion and explosion, and discharges the fibers intercepted on the filter surface by regularly opening the cover, thereby effectively improving the safety factor. Example

[0031] Reference Figure 1The embodiment of the present application provides a collection device for preventing dust accumulation, combustion and explosion. When actually used, it is installed on the side of the actual grinding station of the grinding device to timely remove fiber dust and avoid explosion with sparks after accumulation at the grinding station. The collection device includes a temporary storage pipe 1, a ventilation duct 2 and a fan 3, which are arranged in sequence and connected. The fan 3 is used to draw air from the grinding station to the temporary storage pipe 1, intercept the fiber dust in the temporary storage pipe 1, and then discharge it from the ventilation duct 2 to the room. In the daily process of sucking out fibers, fiber dust is intercepted by the temporary storage pipe 1, and the fibers intercepted in the temporary storage pipe 1 are discharged by regularly opening the cover body 5, so that the fiber accumulation in the temporary storage pipe 1 is less than the conditions required for combustion or explosion. Even if sparks flow into the temporary storage pipe 1 during the grinding process, they cannot burn or explode due to insufficient fiber accumulation, thereby effectively improving the safety factor.

[0032] Reference Figure 2 , a filter screen 4 is arranged inside the temporary storage tube 1, and the filter screen 4 is used to intercept fiber dust. During the vacuuming process, the fiber dust is adsorbed to the side wall of the filter screen 4 by air pressure. A dust discharge hole 11 is arranged through the bottom of the temporary storage tube 1, and a cover body 5 for sealing the dust discharge hole 11 is rotatably connected to the bottom of the temporary storage tube 1. A beater 12 is arranged on the top of the temporary storage tube 1. The beater 12 can be a vibrator or an air hammer, which is used to periodically knock the temporary storage tube 1 in the dust discharge state after the cover body 5 is opened, so as to cause the fibers accumulated on the filter screen 4 to fall off. The beater 12 can be opened and closed by manual control, timing control or sensor triggering. This design discharges the fibers intercepted on the surface of the filter screen 4 by opening the cover body 5 periodically, thereby effectively reducing the accumulation of fiber fluff in the temporary storage tube 1, thereby reducing the risk of fire and explosion.

[0033] Reference Figure 3 Specifically, the filter screen 4 is composed of a filter plate 41 and a filter cloth 42. The filter cloth 42 is located on the side of the filter plate 41 away from the ventilation duct 2. The filter plate 41 is provided with a plurality of filter holes 43 in the horizontal direction to facilitate air circulation. The filter plate 41 is also provided with a plurality of supporting arc surfaces 44 on the side away from the ventilation duct 2. The filter cloth 42 fits with the supporting arc surfaces 44 in the dust suction working state. The supporting arc surfaces 44 can increase the actual contact area between the filter cloth 42 and the plurality of filter holes 43, thereby effectively increasing the actual working area of ​​the filter cloth 42, that is, the filtering effect is stronger. In addition, in the continuous dust suction working state, the fiber fluff can be accumulated in the area after the filter cloth 42 is bent along the supporting arc surface 44, and it is not easy to wander, so that the position state of the intercepted fiber fluff is more stable, and it is also convenient for the subsequent centralized discharge of the fiber fluff.

[0034] Reference Figure 4, a mounting strip 45 is glued and fixed to the top of the filter cloth 42, and a mounting hole 46 is correspondingly provided at the top of the side wall of the filter plate 41, and the opening direction of the mounting hole 46 is inclined upward, so that the mounting strip 45 can be inserted into the mounting hole 46 inclined downward. An elastic member 47 is also fixed to the bottom of the side wall of the filter plate 41 by bolts, and the elastic member 47 can be a spring or a rubber belt. The end of the elastic member 47 away from the connection between the elastic member 47 and the filter plate 41 is provided with a mounting clip 48, and the mounting clip 48 clamps the bottom of the filter cloth 42. The top of the filter cloth 42 is detachable by the insertion relationship between the mounting strip 45 and the mounting hole 46, and the bottom of the filter cloth 42 is detachable by the clamping relationship between the mounting clip 48 and the filter cloth 42, so that the filter cloth 42 can be quickly replaced as a whole.

[0035] Specifically, in this embodiment, the filter plate 41 is made of stainless steel, which has good corrosion resistance and strength. The filter cloth 42 can be made of nylon or polyester, both of which have high wear resistance and air permeability. The diameter of the filter hole 43 can be adjusted according to actual needs to ensure that the fibers can be effectively intercepted without affecting the smooth flow of air.

[0036] When the dust is sucked, the airflow enters the ventilation duct 2 through the filter screen 4, and the fibers are intercepted by the filter screen 4 and accumulated on the filter cloth 42. Due to the design of the filter cloth 42, the fibers are more likely to be concentrated in the area where the filter cloth 42 is bent along the supporting arc surface 44, and are not easy to move. When dust removal is required, the airflow is cut off from the filter cloth 42, and the elastic member 47 recovers its deformation and straightens the filter cloth 42 again. At this time, the fiber fluff accumulated in the bent area of ​​the filter cloth 42 can be ejected to promote the shedding of the fiber fluff, which is more efficient.

[0037] Reference Figure 5 and Figure 6The temporary storage pipe 1 is also provided with a conversion hole 13, and a conversion plate 14 is slidably provided inside the conversion hole 13. A conversion drive 141 for driving the conversion plate 14 to slide is connected between the ventilation duct 2 and the conversion plate 14. In this embodiment, the conversion drive 141 is a cylinder. The conversion plate 14 is vertically arranged and has a dust collection ventilation hole 15 extending therethrough in the horizontal direction. In the dust collection state, the dust collection ventilation hole 15 is located inside the ventilation duct 2. The conversion plate 14 is also provided with a temporary ventilation channel 16 inside it. Both ends of the temporary ventilation channel 16 are opened toward the direction of the fan 3 and are located outside the ventilation duct 2. When in the dust collection state, the conversion plate 14 remains in the initial position, and the air is filtered from the filter screen 4, passes through the dust collection vents 15 and flows to the fan 3; when dust removal is required, the conversion drive 141 slides the conversion plate 14 to the point where the dust collection vents 15 are located below the ventilation duct 2 and the lower end opening of the temporary ventilation channel 16 is located on the inner side of the ventilation duct 2, and the upper end opening is located on the outer side of the ventilation duct 2. At this time, the fan 3 will continue to work, but it inhales fresh air from the outside instead of dusty gas. This design not only ensures the continuous operation of the fan 3, but also prevents new dust from being sucked into the system during the dust removal process. If there is no conversion plate 14, and the airflow is controlled by powering on and off the fan 3, it is easy to generate electric sparks at the moment of power-on, causing safety hazards.

[0038] In order to further improve the automation of the overall structure and minimize the addition of electrical components (to prevent electric sparks from causing safety hazards during power-on), in this embodiment, the cover body 5 and the temporary storage tube 1 are set to be rotatably connected, and a traction rope 17 is also connected between the cover body 5 and the bottom of the conversion plate 14. When the conversion plate 14 moves downward to switch to the dust exhaust state (blocking the airflow), the traction rope 17 drives the cover body 5 downward, and when the conversion plate 14 moves upward to restore to the dust collection state, the traction rope 17 drives the cover body 5 upward, thereby realizing the automatic opening of the cover body 5 in the dust exhaust state and the automatic closing of the cover body 5 in the dust collection working state, thereby improving the degree of automation.

[0039] And, refer to Figure 7The end of the cover body 5 is rotatably provided with a dust box 53 with a top opening, and a dust cover 54 is fixedly provided at one end of the cover body 5 close to the dust box 53. The dust cover 54 is located inside the opening of the dust box 53 and in the dust suction state, the cover body 5 is horizontally arranged and covers the dust discharge hole 11. At this time, the dust cover 54 is also horizontally arranged and blocks the top opening of the dust box 53 (it is set to a clearance fit during actual assembly to facilitate the dust cover 54 to rotate relative to the dust box 53). When in the dust discharge state, the cover body 5 is turned downward and tilted, and the dust cover 54 is also tilted with the cover body 5. Therefore, although the dust cover 54 is still located at the top opening of the dust box 53, the end thereof is tilted downward and penetrates deeper into the dust box 53. Therefore, the fiber dust falling to the top wall of the cover body 5 in this state will continue to slide along with the cover body 5 and the dust cover 54, and finally fall to the bottom of the dust box 53 from the gap between the dust cover 54 and the inner wall of the dust box 53. When the dust discharge action is completed, the cover body 5 is reset, and the dust cover 54 also rotates to a horizontal state to continue to block the top opening of the dust box 53. As a whole, the automatic opening and closing of the top opening of the dust box 53 is realized, and the degree of automation is higher.

[0040] Finally, refer to Figure 8 , baffles 51 are also provided on both sides of the cover body 5, and the baffles 51 are vertically arranged between the cover body 5. The bottom wall of the temporary storage tube 1 is provided with embedded grooves 52 on both sides of the dust discharge hole 11. In the dust suction state, the baffles 51 rotate upward with the cover body 5 and finally make the baffles 51 located inside the embedded grooves 52. In the dust discharge state, the cover body 5 rotates downward to drive a part of the baffles 51 to rotate out of the embedded grooves 52, and in this state, the baffles 51 on both sides of the dust discharge process can better limit the fiber dust, reduce the leakage of fiber dust from both sides, and play a guiding role. In addition, in this state, part of the baffle 51 still remains in the embedded grooves 52, which also makes it difficult for external sparks to contact the fiber dust from the gap between the cover body 5 and the bottom of the temporary storage tube 1, thereby further improving the safety performance.

[0041] The implementation principle of this embodiment is: through a series of non-electrical designs of mechanical structures, not only the potential safety hazard caused by excessive fiber accumulation in the long-term operation of the traditional dust collector is solved, but also efficient fiber discharge and continuous operation of the equipment are achieved. In particular, by introducing auxiliary devices such as the traction rope 17 and the dust cover 54, the automation and reliability of the system are significantly improved. The overall design is not only simple and practical, easy to maintain, but also greatly improves the safety and environmental performance of the metal saw blade processing equipment.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A collection device for preventing dust accumulation, combustion and explosion, characterized in that: The invention comprises a ventilation duct (2) and a fan (3) connected to the ventilation duct (2); the end of the ventilation duct (2) away from the dust collector is connected to a temporary storage pipe (1); a filter screen (4) is arranged inside the temporary storage pipe (1); a dust discharge hole (11) is arranged through the bottom of the temporary storage pipe (1); and a cover body (5) for covering the dust discharge hole (11) is arranged at the bottom of the temporary storage pipe (1).

2. A dust collection device for preventing dust accumulation, combustion and explosion according to claim 1, characterized in that: A beater (12) is provided on the top of the temporary storage tube (1).

3. A dust collection device for preventing dust accumulation, combustion and explosion according to claim 1, characterized in that: The ventilation duct (2) is provided with a conversion hole (13) penetrating therethrough, a conversion plate (14) is slidably provided inside the conversion hole (13), and a conversion driving member (141) for driving the conversion plate (14) to slide is connected between the ventilation duct (2) and the conversion plate (14); The conversion plate (14) is provided with a dust suction ventilation hole (15) extending therethrough, the dust suction ventilation hole (15) being located inside the ventilation duct (2), and a temporary ventilation channel (16) being also provided inside the conversion plate (14), the opening directions of both ends of the temporary ventilation channel (16) being both oriented in the direction of the fan (3), and the opening directions of both ends of the temporary ventilation channel (16) being both located outside the ventilation duct (2).

4. A dust collection device for preventing dust accumulation, combustion and explosion according to claim 3, characterized in that: The cover body (5) is rotatably connected to the temporary storage tube (1), and a traction rope (17) is connected between the cover body (5) and the conversion plate (14).

5. A dust collection device for preventing dust accumulation, combustion and explosion according to claim 4, characterized in that: Baffles (51) are provided on both sides of the cover body (5), and embedded grooves (52) are provided on both sides of the dust discharge hole (11) of the temporary storage pipe (1), and the baffles (51) are located inside the embedded grooves (52).

6. A dust collection device for preventing dust accumulation, combustion and explosion according to claim 1, characterized in that: The filter screen (4) comprises a filter plate (41) and a filter cloth (42); the filter cloth (42) is located on a side of the filter plate (41) away from the ventilation duct (2); and a plurality of filter holes (43) are provided through the filter plate (41).

7. A dust collection device for preventing dust accumulation, combustion and explosion according to claim 6, characterized in that: A supporting curved surface (44) is provided on a side of the filter plate (41) away from the ventilation duct (2), and the filter cloth (42) is in contact with the supporting curved surface (44).

8. A dust collection device for preventing dust accumulation, combustion and explosion according to claim 7, characterized in that: The top of the filter cloth (42) is fixedly arranged on the filter plate (41), and an elastic member (47) is connected between the bottom of the filter cloth (42) and the filter plate (41).

9. A dust collection device for preventing dust accumulation, combustion and explosion according to claim 8, characterized in that: A mounting strip (45) is provided at the top of the filter cloth (42), a mounting hole (46) for inserting the mounting strip (45) is provided at the top of the side wall of the filter plate (41), and a mounting clip (48) is provided at the end of the elastic member (47) away from the connection between the elastic member (47) and the filter plate (41), and the mounting clip (48) clamps the bottom of the filter cloth (42).

10. A dust collection device for preventing dust accumulation, combustion and explosion according to claim 1, characterized in that: A dust box (53) with a top opening is rotatably provided at the end of the cover body (5), and a dust cover (54) is fixedly provided at the end of the cover body (5), wherein the dust cover (54) is located inside the opening of the dust box (53).

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