CN220609534U - Dust removal, dust collection and collection device - Google Patents

Dust removal, dust collection and collection device Download PDF

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Publication number
CN220609534U
CN220609534U CN202321947646.1U CN202321947646U CN220609534U CN 220609534 U CN220609534 U CN 220609534U CN 202321947646 U CN202321947646 U CN 202321947646U CN 220609534 U CN220609534 U CN 220609534U
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China
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fixedly connected
dust
inboard
fixed plate
outside
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CN202321947646.1U
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Chinese (zh)
Inventor
张文强
王永利
尹培杰
张宇
杨少杰
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Wuan Yuhua Iron And Steel Co ltd
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Wuan Yuhua Iron And Steel Co ltd
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Abstract

The utility model relates to the technical field of collecting devices, in particular to a dust removing and collecting device which comprises a processing shell and an inlet, wherein the inner side of one end of the processing shell is fixedly connected with the inlet, the inner side of one end of the processing shell is fixedly connected with an outlet, the lower end of the processing shell is fixedly connected with a dust removing shell, the upper end of the processing shell is fixedly connected with a first fan, the lower end of the first fan is fixedly connected with a wind dispersing box, a maintenance opening is formed in the inner side of the wind dispersing box, and the inner side of the lower end of the wind dispersing box is rotationally connected with the outer side of the upper end of a fixing frame.

Description

Dust removal, dust collection and collection device
Technical Field
The utility model relates to the technical field of collecting devices, in particular to a dust removing and collecting device.
Background
The dust collection device is a device for collecting dust of a dust remover for sintered pellets, a large amount of dust can be generated in the process of sintering the pellets, dust in impurity air needs to be collected in discharged air, the polluted air is reduced, as the requirements of flue gas purification are gradually improved, a conventional electric dust collector faces serious challenges, more and more coal-fired power plants adopt a cloth bag dust collector to treat flue gas, the investment and the operation cost of the cloth bag dust collector are gradually reduced, and the cloth bag dust collector is a primary choice even lower than an electrostatic dust collector under the situation of reducing the total emission amount of smoke dust in certain cases.
The filtering process of the bag-type dust collector is actually divided into two stages, firstly dust-containing gas passes through a clean filter material, the filtering effect is mainly fiber at the moment, when dust trapped on the filter material is continuously increased, a part of dust is embedded into the filter material, and a part of dust is attached to the surface to form a dust layer.
Disclosure of Invention
The utility model aims to provide a dust removing, collecting and collecting device, which aims to solve the problems that a bag-type dust remover is high in collecting efficiency, mainly depends on the effect of a dust layer formed on a filter material, the filter cloth mainly plays the role of forming and supporting the dust layer, a dust primary layer is reserved during ash removal, the efficiency is obviously reduced due to excessive ash removal, and the damage of a filter bag is accelerated.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides a dust collection device that removes dust, including handling shell and import, handle shell one end inboard fixedly connected with outlet, handle shell lower extreme fixedly connected with dust removal shell, handle shell upper end fixedly connected with first fan, first fan lower extreme fixedly connected with bellows, the maintenance mouth has been seted up to bellows inboard, bellows lower extreme inboard swivelling joint is in the mount upper end outside, mount one side fixedly connected with spring telescopic link, mount lower extreme fixedly connected with fixed plate, fixed plate upper end fixedly connected with second fan, second fan upper end fixedly connected with flexible hose, flexible hose one side fixedly connected with stopper, stopper outside sliding connection is inboard at the spout, the spout is seted up inboard at the mount, fixed plate lower extreme fixedly connected with first motor, first motor spindle end fixedly connected with eccentric roller, eccentric roller outside fixedly connected with connecting rod, mount upper end fixedly connected with upper cover plate, upper cover plate upper end fixedly connected with second motor end fixedly connected with second fan, second fan inside is provided with a thread groove, the inside is seted up the threaded rod is equipped with, the inside is equipped with the threaded rod is equipped with the screw hole, the inside is seted up to the inside is connected with the screw hole, the inside is equipped with the screw hole is connected with the inside of the fixed plate, the inside is equipped with the screw hole is connected with the inside the screw hole, the inner side of the fixed plate is provided with a moving groove.
Preferably, the movable plate is cylindrical, the dust grooves are formed in the movable plate, the dust grooves are communicated with the movable grooves, and the number of the movable grooves is several.
Preferably, the shape of connecting rod is the cylinder, connecting rod upper end rotates to be connected in the processing shell upper end is inboard, connecting rod outside fixed connection's eccentric gyro wheel quantity is two, the outside laminating of eccentric gyro wheel outside and mount.
Preferably, the shape of lower apron is the cylinder, lower apron lower extreme sliding connection is inboard in the fixed plate upper end, the shape cylinder of fixed plate, fixed plate outside fixed connection is inboard at the processing shell.
Preferably, the number of the second motors arranged on the inner side of the lower cover plate is a plurality, the number of the upper cover plates arranged on the inner side of the fixed plate is a plurality, the second motors are staggered with the upper cover plates, and the shape and the size of the upper cover plates are the same as those of the second motors.
Preferably, the outside of threaded rod is equipped with the screw thread, the threaded rod lower extreme slides in the lower apron is inboard, the shape of lower apron is longer annular, threaded rod screwed connection is inboard at the screw thread groove, the shape of spiral leaf is the heliciform, the fixed plate lower extreme rotates in the dust removal shell is inboard, the spiral leaf rotates in the dust removal shell is inboard.
Preferably, the shape of the air dispersing box is a cylinder, air holes are formed in the inner side of the air dispersing box, the air holes formed in the inner side of the air dispersing box are communicated with the inner side of the support, the maintenance ports are staggered with the air holes formed in the inner side of the air dispersing box, and the number of the maintenance ports is the same as that of the air holes formed in the inner side of the air dispersing box.
Preferably, the inner side of the movable groove slides outside the cloth bags, a plurality of cloth bags and a plurality of supports are arranged, the outer side of the connecting rod moves inside the upper cover plate, and movable holes are formed inside the upper cover plate.
Compared with the prior art, the utility model has the beneficial effects that:
according to the utility model, after dust filtration of the bag-type dust remover is completed, the first fan and the first motor arranged at the upper part are started, so that dust accumulated outside the bag-type dust remover can be cleaned, dust removal efficiency outside the bag-type dust remover is accelerated under the collision and vibration between the bag-type dust remover and the support, and the movable plate is moved outside the bag-type dust remover through the second fan and the second motor for the cleaned dust, so that the cleaned dust is uniformly adhered outside the bag-type dust remover, the normal working effect of the bag-type dust remover is protected, and the damage to the bag-type dust remover caused by dust removal of the bag-type dust remover is reduced.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic view of the structure of the fixing frame of the present utility model;
FIG. 3 is a schematic view of a chute according to the present utility model;
FIG. 4 is a schematic view of a structure of a fixing plate according to the present utility model;
FIG. 5 is a schematic view of a first motor according to the present utility model;
FIG. 6 is a schematic view of a mobile plate structure according to the present utility model;
FIG. 7 is a schematic diagram of a cloth bag structure according to the present utility model;
FIG. 8 is a schematic diagram of a mobile trough structure according to the present utility model.
In the figure: 1. a treatment shell; 2. an inlet; 3. an outlet; 4. a dust removal shell; 5. a first fan; 6. a wind dispersing box; 7. maintaining the mouth; 8. a fixing frame; 9. a spring telescoping rod; 10. a fixing plate; 11. a second fan; 12. a flexible hose; 13. a limiting block; 14. a chute; 15. a first motor; 16. eccentric idler wheels; 17. a connecting rod; 18. an upper cover plate; 19. a second motor; 20. a threaded rod; 21. a lower cover plate; 22. a movable plate; 23. a movable groove; 24. a dust tank; 25. a thread groove; 26. a bracket; 27. a cloth bag; 28. a first dust hole; 29. a second dust hole; 30. spiral leaves; 31. and a moving groove.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-8, the present utility model provides a technical solution:
the dust removing, collecting and collecting device comprises a processing shell 1 and an inlet 2, wherein the inner side of one end of the processing shell 1 is fixedly connected with the inlet 2, the inner side of one end of the processing shell 1 is fixedly connected with an outlet 3, the lower end of the processing shell 1 is fixedly connected with a dust removing shell 4, the upper end of the processing shell 1 is fixedly connected with a first fan 5, the lower end of the first fan 5 is fixedly connected with a wind dispersing box 6, the inner side of the wind dispersing box 6 is provided with a maintenance opening 7, the inner side of the lower end of the wind dispersing box 6 is rotatably connected with the outer side of the upper end of a fixing frame 8, one side of the fixing frame 8 is fixedly connected with a spring telescopic rod 9, the lower end of the fixing frame 8 is fixedly connected with a fixing plate 10, the upper end of the fixing plate 10 is fixedly connected with a second fan 11, the upper end of the second fan 11 is fixedly connected with a telescopic hose 12, one side of the telescopic hose 12 is fixedly connected with a limiting block 13, the outer side of the limiting block 13 is slidably connected with the inner side of a sliding groove 14, the sliding groove 14 is provided with the inner side of the fixing frame 8, the lower end of the fixed plate 10 is fixedly connected with a first motor 15, the tail end of a main shaft of the first motor 15 is fixedly connected with an eccentric roller 16, the outer side of the eccentric roller 16 is fixedly connected with a connecting rod 17, the upper end of the fixed frame 8 is fixedly connected with an upper cover plate 18, the upper end of the upper cover plate 18 is fixedly connected with a second motor 19, the tail end of the main shaft of the second motor 19 is fixedly connected with a threaded rod 20, the inner side of the lower end of the fixed frame 8 is fixedly connected with a lower cover plate 21, the outer side of the threaded rod 20 is spirally connected with a movable plate 22, the inner side of the movable plate 22 is provided with a movable groove 23, the inner side of the movable plate 22 is provided with a dust groove 24, the inner side of the movable plate 22 is provided with a thread groove 25, the upper end of the lower cover plate 21 is fixedly connected with a bracket 26, the outer side of the bracket 26 is provided with a cloth bag 27, the inner side of the threaded rod 20 is provided with a first dust falling hole 28, the inner side of the lower cover plate 21 is provided with a second dust falling hole 29, the outer side of the threaded rod 20 is fixedly connected with a spiral blade 30, a moving groove 31 is formed inside the fixed plate 10.
The movable plate 22 is in a cylinder shape, the dust groove 24 is formed in the movable plate 22, the dust groove 24 is communicated with the movable groove 23, the number of the movable grooves 23 is a plurality of, dust blown out from the inside of the limiting block 13 conveniently flows from the inside of the dust groove 24, the dust blown out from the movable groove 23 formed in the inside of the limiting block 13 uniformly blows out of the cloth bag 27, the connecting rod 17 is in a cylinder shape, the upper end of the connecting rod 17 is rotationally connected to the inner side of the upper end of the processing shell 1, the outer side of the connecting rod 17 is fixedly connected with the two eccentric rollers 16, the outer side of the eccentric rollers 16 is jointed with the outer side of the fixed frame 8, the fixed frame 8 which is convenient for driving the outer side to be jointed when the eccentric rollers 16 rotate is slid to the inner side of the upper end of the fixed plate 10, the lower cover plate 21 is in a cylinder shape, the lower end of the lower cover plate 21 is slidingly connected to the inner side of the upper end of the fixed plate 10, the outer side of the fixed plate 10 is in a cylinder shape, the outer side of the fixed plate 10 is fixedly connected to the inner side of the processing shell 1, when the lower cover plate 21 moves, the effect of limiting the fixed frame 8 is convenient, the number of the second motors 19 arranged on the inner side of the lower cover plate 21 is a plurality, the number of the upper cover plates 18 arranged on the inner side of the fixed plate 10 is a plurality, the second motors 19 are staggered with the upper cover plates 18, the upper cover plates 18 and the second motors 19 are the same in shape and size, the effect of protecting dust in the dust removing shell 4 when the upper cover plates 18 are staggered with the second motors 19 is achieved, threads are arranged on the outer side of the threaded rod 20, the lower end of the threaded rod 20 slides on the inner side of the lower cover plate 21, the shape of the lower cover plate 21 is a longer ring, the threaded rod 20 is in threaded connection on the inner side of the threaded groove 25, the shape of the spiral blade 30 is in a spiral shape, the lower end of the fixed plate 10 rotates on the inner side of the dust removing shell 4, the spiral blade 30 rotates on the inner side of the dust removing shell 4 to achieve the effect of uniformly mixing dust in the air in the dust removing shell 4, the shape of the air distributing box 6 is in a cylinder, the wind holes are formed in the inner side of the wind dispersing box 6, the wind holes formed in the inner side of the wind dispersing box 6 are communicated with the inner side of the support 26, the maintenance opening 7 is staggered with the wind holes formed in the inner side of the wind dispersing box 6, the number of the maintenance openings 7 is the same as that of the wind holes formed in the inner side of the wind dispersing box 6, maintenance on the cloth bag 27 is facilitated, meanwhile, the square holes in the inner side of the wind dispersing box 6 facilitate the wind flowing effect of the first fan 5, the inner side of the movable groove 23 slides in the outer side of the cloth bag 27, a plurality of cloth bags 27 and supports 26 are arranged, the outer side of the connecting rod 17 moves on the inner side of the upper cover plate 18, the movable holes are formed in the inner side of the upper cover plate 18, the cloth bags 27 are conveniently driven to move when the supports 26 move, the supports 26 collide with the cloth bags 27, and dust is conveniently cleaned.
The working flow is as follows: the external power supply is electrified in the using process of the device, impurities are hollow, the impurities enter the inside of the processing shell 1 from an inlet 2 fixedly connected with the inner side of one end of the processing shell 1, a cloth bag 27 adsorbs dust, when the outside of a connecting rod 17 is required to be cleaned after the dust adsorption of the cloth bag 27 is completed, a fixed plate 10 fixedly connected with the inner side of the processing shell 1 is started, a first motor 15 fixedly connected with the lower end of the fixed plate 10 is started, a main shaft of the first motor 15 rotates to drive an eccentric roller 16 fixedly connected with the tail end of the main shaft to rotate, the eccentric roller 16 rotates to drive a connecting rod 17 fixedly connected with the outer side to rotate, in the rotating process of the connecting rod 17, the connecting rod 17 pushes a fixing frame 8 attached to the outer side to slide at the upper end of the fixed plate 10 according to the shape of the connecting rod 17, meanwhile, the fixing frame 8 slides back and forth on the inner side of the upper end of the fixed plate 10 under the thrust of a spring telescopic rod 9 fixedly connected with the inner side of the processing shell 1, meanwhile, the threaded rod 20 fixedly connected with the tail end of the main shaft of the second motor 19 arranged at the upper end of the fixed plate 10 slides to the outer side of the lower end of the threaded rod 20 and slides to the inner side of the moving groove 31 formed in the inner side of the fixed plate 10, so that the effect of vibrating the fixed frame 8 is achieved, the fixed frame 8 vibrates to drive the lower cover plate 21 fixedly connected with the inner side of the lower end to move, the lower cover plate 21 moves to drive the support 26 fixedly connected with the upper end to move, the support 26 moves to drive the cloth bag 27 arranged on the outer side to move, a certain collision occurs between the support 26 and the cloth bag 27, so that when the cloth bag 27 collides, the effect of cleaning dust outside the cloth bag 27 is accelerated, meanwhile, the first fan 5 fixedly connected with the upper end of the air dispersing box 6 is started, the first fan 5 blows air, and the air blown by the first fan 5 enters the upper cover plate 18 fixedly connected with the inner side of the fixed frame 8 from the air hole formed in the air dispersing box 6, the dust entering the cloth bag 27 arranged on the inner side of the upper cover plate 18 from the inner side of the upper cover plate 18, so as to blow the cloth bag 27, clean the dust outside the cloth bag 27, meanwhile, the movable plate 22 is positioned at the lower end of the upper cover plate 18, is attached to the lower end of the upper cover plate 18, the dust falling from the outer side of the cloth bag 27 enters the upper end of the fixed plate 10 from the second dust falling hole 29 formed on the inner side of the lower cover plate 21 at the upper end of the lower cover plate 21, the lower end of the lower cover plate 21 is attached to the upper end of the fixed plate 10, meanwhile, the lower end of the lower cover plate 21 slides on the inner side of the fixed plate 10, the dust moves the second dust falling hole 29 to enter the inner side of the first dust falling hole 28 formed on the lower end of the fixed plate 10, falls to the inner side of the dust removing shell 4 from the inner side of the first dust falling hole 28, after the dust at the upper end of the lower cover plate 21 is cleaned, the first motor 15 and the air dispersing box 6 are stopped, at the moment, the first dust falling hole 28 and the second dust falling hole 29 are not communicated, the second motor 19 fixedly connected with the upper end of the upper cover plate 18 is started, the main shaft of the second motor 19 rotates to drive the threaded rod 20 fixedly connected with the tail end of the main shaft to rotate, the threaded rod 20 rotates to drive the movable plate 22 fixedly connected with the outer side to rotate under the limit of the limit block 13 fixedly connected with one side, the threaded rod 20 rotates to drive the spiral blade 30 fixedly connected with the outer side of the lower end to rotate, the spiral blade 30 rotates on the inner side of the dust removing shell 4 to play a role in uniformly floating dust in the air, the limit block 13 is slidably connected on the inner side of the chute 14 formed on the inner side of the fixed frame 8 to play a role in limiting the movable plate 22 during sliding, the movable plate 22 moves on the inner side of the processing shell 1, meanwhile, the movable groove 23 formed on the inner side of the movable plate 22 moves outside the cloth bag 27, meanwhile, the second fan 11 fixedly connected with the upper end of the fixed plate 10 is started, the second fan 11 pumps the dust in the dust removing shell 4, the inside of the stopper 13 fixedly connected with one side of the second fan 11 flows into the dust groove 24 formed in the inner side of the movable plate 22, and the dust is uniformly blown out from the dust groove 24, so that the dust is attached to the outside of the cloth bag 27, the maintenance opening 7 formed in the upper end of the air distributing box 6 is convenient to maintain the cloth bag 27 from the inside of the maintenance opening 7 when the air distributing box 6 rotates, the dust collection can be realized in conclusion, the dust accumulated outside the cloth bag dust remover can be cleaned, the dust collection efficiency outside the cloth bag dust remover is accelerated, the cleaned dust is uniformly adhered to the outside of the cloth bag dust remover, the normal working effect of the cloth bag dust is protected, and the damage to the cloth bag dust remover caused when the cloth bag dust remover is removed is reduced.
Although embodiments of the present utility model 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 therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. The utility model provides a dust removal dust collection device, includes treatment shell (1) and import (2), its characterized in that: the utility model is characterized in that an inlet (2) is fixedly connected to the inner side of one end of the treatment shell (1), an outlet (3) is fixedly connected to the inner side of one end of the treatment shell (1), a dust removal shell (4) is fixedly connected to the lower end of the treatment shell (1), a first fan (5) is fixedly connected to the upper end of the treatment shell (1), a wind dispersing box (6) is fixedly connected to the lower end of the first fan (5), a maintenance opening (7) is formed in the inner side of the wind dispersing box (6), the inner side of the lower end of the wind dispersing box (6) is rotatably connected to the outer side of the upper end of a fixing frame (8), a spring telescopic rod (9) is fixedly connected to one side of the fixing frame (8), a fixing plate (10) is fixedly connected to the lower end of the fixing frame (8), the utility model discloses a fan, including fixed plate (10) and fixed plate, fixed plate (10) upper end fixedly connected with second fan (11), second fan (11) upper end fixedly connected with flexible hose (12), flexible hose (12) one side fixedly connected with stopper (13), stopper (13) outside sliding connection is inboard in spout (14), spout (14) are seted up inboard at mount (8), fixed plate (10) lower extreme fixedly connected with first motor (15), first motor (15) main shaft end fixedly connected with eccentric gyro wheel (16), eccentric gyro wheel (16) outside fixedly connected with connecting rod (17), the utility model discloses a dust removal device for a motor vehicle, including mount (8) upper end fixedly connected with upper cover plate (18), upper cover plate (18) upper end fixedly connected with second motor (19), second motor (19) main shaft end fixedly connected with threaded rod (20), mount (8) lower extreme inboard fixedly connected with lower apron (21), threaded rod (20) outside screwed connection movable plate (22), movable groove (23) have been seted up to movable plate (22) inboard, dust groove (24) have been seted up to movable plate (22) inboard, thread groove (25) have been seted up to movable plate (22) inboard, lower apron (21) upper end fixedly connected with support (26), support (26) outside is equipped with sack (27), first dust fall hole (28) have been seted up to threaded rod (20) inboard, second dust fall hole (29) have been seted up to lower apron (21) inboard, threaded rod (20) lower extreme outside fixedly connected with helical blade (30), movable groove (31) have been seted up to fixed plate (10) inboard.
2. The dust removing, collecting device according to claim 1, wherein: the movable plate (22) is cylindrical, the dust grooves (24) are formed in the movable plate (22), the dust grooves (24) are communicated with the movable grooves (23), and the number of the movable grooves (23) is several.
3. The dust removing, collecting device according to claim 1, wherein: the shape of connecting rod (17) is the cylinder, connecting rod (17) upper end rotates and connects in handling shell (1) upper end inboard, eccentric gyro wheel (16) quantity two of connecting rod (17) outside fixed connection, eccentric gyro wheel (16) outside and mount (8) outside laminating.
4. The dust removing, collecting device according to claim 1, wherein: the shape of lower apron (21) is the cylinder, lower extreme sliding connection of lower apron (21) is inboard in fixed plate (10) upper end, the shape cylinder of fixed plate (10), fixed plate (10) outside fixed connection is inboard in processing shell (1).
5. The dust removing, collecting device according to claim 1, wherein: the number of second motors (19) arranged on the inner side of the lower cover plate (21) is a plurality of, the number of upper cover plates (18) arranged on the inner side of the fixed plate (10) is a plurality of, the second motors (19) are staggered with the upper cover plates (18), and the shapes and the sizes of the upper cover plates (18) and the second motors (19) are the same.
6. The dust removing, collecting device according to claim 1, wherein: the utility model discloses a dust removal device, including threaded rod (20), fixed plate (10), lower cover plate (21), threaded rod (20) outside is equipped with the screw thread, threaded rod (20) lower extreme slides in lower cover plate (21) inboard, the shape of lower cover plate (21) is longer annular, threaded rod (20) screwed connection is inboard at thread groove (25), the shape of spiral leaf (30) is the heliciform, fixed plate (10) lower extreme rotates in dust removal shell (4) inboard, spiral leaf (30) rotate in dust removal shell (4) inboard.
7. The dust removing, collecting device according to claim 1, wherein: the shape of the air dispersing box (6) is a cylinder, air holes are formed in the inner side of the air dispersing box (6), the air holes formed in the inner side of the air dispersing box (6) are communicated with the inner side of the support (26), the maintenance ports (7) are staggered with the air holes formed in the inner side of the air dispersing box (6), and the number of the maintenance ports (7) is the same as that of the air holes formed in the inner side of the air dispersing box (6).
8. The dust removing, collecting device according to claim 1, wherein: the inner side of the movable groove (23) slides outside the cloth bag (27), a plurality of cloth bags (27) and a plurality of supports (26) are respectively arranged, the outer side of the connecting rod (17) moves inside the upper cover plate (18), and movable holes are formed inside the upper cover plate (18).
CN202321947646.1U 2023-07-24 2023-07-24 Dust removal, dust collection and collection device Active CN220609534U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202321947646.1U CN220609534U (en) 2023-07-24 2023-07-24 Dust removal, dust collection and collection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202321947646.1U CN220609534U (en) 2023-07-24 2023-07-24 Dust removal, dust collection and collection device

Publications (1)

Publication Number Publication Date
CN220609534U true CN220609534U (en) 2024-03-19

Family

ID=90227655

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202321947646.1U Active CN220609534U (en) 2023-07-24 2023-07-24 Dust removal, dust collection and collection device

Country Status (1)

Country Link
CN (1) CN220609534U (en)

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