Dust filter for civil air defense ventilation and use method

Abstract

The invention relates to the field of filtering dust removal. The invention discloses a dust filter for civil air defense ventilation and a use method. The device is composed of a rotating mechanism and a cleaning mechanism. According to the dust filter for civil air defense ventilation and the use method, compressed air enters the air outlet plate to be released through an internal air pump machine and a connected air conveying pipe, dust attached to the surface of a filter screen is subjected to back flushing cleaning, and when the dust filter makes contact with the blocked surface of the filter screen, generated air can pass through the interior of an air inlet pipe to be discharged out of the air inlet pipe; compressed air is released to extrude a second compression cushion column to move downwards, meanwhile, a second connecting block is driven to drive a first connecting block to rise through a pry bar column, a first compression cushion column is made to rise, water in a water storage bin is pumped through an absorption pipe in a water pressing bin, and at the moment, an air pump machine is stopped; and a first connecting block jacks up a compressed spring for releasing, a first compression pad column extrudes water in a water pressing bin, the water is released through a multi-head spray gun, and the surface of the filter screen is cleaned.

Description

Technical Field

[0001] The invention relates to the field of filtering and dust removal, and in particular to a dust filter for civil air defense ventilation and a use method thereof. Background Art

[0002] The purpose of building civil air defense ventilation facilities is to provide ventilation effects inside and outside the civil air defense projects. Through the internal filter dust collector, the fiber layer and particle layer are separated to capture the dust in the air. It can be installed inside the ventilation duct to filter the internal air and achieve the purification of the transported air.

[0003] The existing patent (Announcement No.: CN117732163B) discloses a dust filter for civil air defense ventilation, which relates to the field of filtering and dust removal technology. The dust filter body includes a dust filter pipe, a diversion component, a transmission mechanism and a filter element. The two ends of the dust filter pipe are respectively provided with an air inlet and an air outlet. The filter element is installed in the middle of the dust filter pipe. The top of the filter element is installed with a transmission mechanism, one side of the transmission mechanism is installed with an outer dust removal component, the bottom of the filter element is installed with an inner dust removal component, and the inner side of the air inlet is provided with a diversion component. The dust filter for civil air defense ventilation uses a transmission mechanism to drive the filter membrane to circulate and rotate, and realizes automatic dust removal effect at the top and bottom. It does not require manual cleaning, and the effective dust filtering area is expanded by guiding the airflow internally. When replacing the filter membrane, it does not need to be disassembled, and it can be directly pulled out and replaced through the top cover plate, which simplifies the replacement process, including. In the process of realizing the present invention, the inventors found that there are at least the following problems in the prior art that have not been solved: 1. When the air filter is filtering, the dust attached to the surface of the area varies. During back-blowing cleaning, the area with less blockage will weaken the wind force in the area with more serious blockage, resulting in the cleaning of the filter not being precise and efficient enough. At the same time, continuous water flushing is used, which wastes the use of water resources; 2. After a single brush roller continuously cleans the filter, there is a lot of dust attached to the surface, which shortens the time for replacing the brush roller. Summary of the invention

[0004] The purpose of the present invention is to provide a dust filter for civil air defense ventilation and a method of use, so as to solve the problems raised in the above background technology. To achieve the above purpose, the present invention provides the following technical solutions: a dust filter for civil air defense ventilation, comprising a ventilation plate, a fixing frame is installed on the inner wall of the ventilation plate, a protective cover plate is fixedly connected to one side of the fixing frame, and a cleaning mechanism for cleaning a blocked filter screen is fixedly connected to the inner wall of the protective cover plate; A driving motor is fixedly penetrated inside the right side of the ventilation plate, a transmission belt is provided on the outer wall of the output shaft of the driving motor, the driving motor is connected to a rotating column through the transmission belt, the rotating column is rotatably connected to the ventilation plate, one end of the rotating column is fixedly connected to a first gear, one end of the first gear is fixedly connected to a rolling shaft, the outer wall of the first gear is meshed with a rack belt, the outer wall of the rolling shaft is tightly fitted with a filter, the outer wall of the ventilation plate is fixedly connected to a mounting square plate, a square bin is installed on the right side of the ventilation plate, and the square bin is fixedly connected to the outer wall of the driving motor.

[0005] Preferably, the cleaning mechanism includes a water pressure tank, which is fixedly connected to the inner wall of the protective cover plate, and the inner wall of the water pressure tank is movably connected with a first compression pad column, the upper end of the first compression pad column is fixedly connected to a first connecting block, the outer wall of the first connecting block is fixedly connected with a spring, and the spring is fixedly connected to the protective cover plate, the upper end of the first connecting block is hinged with a two-way telescopic column, the internal movement of the two-way telescopic column is penetrated by a pry bar column, and the pry bar column is fixedly connected to the protective cover plate, the two-way telescopic column is hinged to a second connecting block at one end away from the first connecting block, and the lower end of the second connecting block is fixedly connected with a second compression pad column, the outer wall of the second compression pad column is movably sleeved with a wrapping tube, and the lower end of the wrapping tube is fixedly connected with an air intake tank, the air intake tank is movably sleeved on the outer wall of the second compression pad column, and the air intake tank is fixedly connected to the inner wall of the protective cover plate.

[0006] Preferably, the outer wall of the wrapping cylinder is fixedly connected with an air inlet pipe, and one side of the air inlet bin is provided with an air supply pipe fixedly connected to the protective cover plate, the upper end of the air supply pipe is fixedly connected to an air pump machine, and the air pump machine is fixedly connected to the protective cover plate, and the lower end of the air supply pipe is fixedly connected to an air outlet plate, the air inlet pipe passes through the air outlet plate, and a check valve is installed inside the lower end of the air outlet plate, the outer wall of the air outlet plate is tightly fitted with a multi-head spray gun, the upper end of the multi-head spray gun is tightly fitted with a pipeline fixing plate, and the interior of the pipeline fixing plate is penetrated by an absorption pipe, the lower end of the absorption pipe is fixedly connected to the water pressure bin, the upper end of the absorption pipe is fixedly connected to a water storage bin, and the water storage bin is fixedly connected to the protective cover plate, and the water supply pipe of the multi-head spray gun is fixedly connected to the lower end of the water pressure bin.

[0007] Preferably, the outer wall of the output shaft of the driving motor is fixedly connected to the first bevel gear, the outer wall of the first bevel gear is meshedly connected to the second bevel gear, the upper end of the second bevel gear is rotatably connected to a right-angle pillar, the right-angle pillar is fixedly connected to the ventilation plate, the outer wall of the second bevel gear is meshedly connected to a gear shaft, the gear shaft is rotatably connected to the output shaft of the driving motor, one end of the gear shaft is fixedly connected to a rotating mechanism, the rotating mechanism is fixedly connected to the ventilation plate, a pinion gear fixedly connected to the output shaft of the driving motor is provided below the second bevel gear, the outer wall of the pinion gear is meshedly connected to a reciprocating mechanism, and the reciprocating mechanism is fixedly connected to the ventilation plate.

[0008] Preferably, the rotating mechanism includes a compound disc, the outer wall of which is provided with a groove, the outer wall of which is movably sleeved with a reinforcement plate, the reinforcement plate is fixedly connected to the ventilation plate, a transmission shaft movably passes through the interior of the compound disc, the transmission shaft is fixedly connected to the gear shaft, the outer wall of the reinforcement plate is tightly fitted with a right-angle plate, the right-angle plate is fixedly connected to the compound disc, one side of the right-angle plate is fixedly connected to two circular columns, one end of the two circular columns is rotatably connected to a large gear, the outer wall of the transmission shaft is fixedly connected to a medium gear, and the medium gear is meshingly connected to the two large gears.

[0009] Preferably, the reciprocating mechanism includes two two-way transmission gears, both of which are meshedly connected to the pinion gear, the outer wall of the two-way transmission gear is movably sleeved with a first stabilizing column, the first stabilizing column is fixedly connected to the ventilation plate, the end of the two-way transmission gear away from the pinion gear is meshedly connected to a gear bearing, the outer wall of the gear bearing is movably sleeved with a second stabilizing column, the second stabilizing column is fixedly connected to the ventilation plate, and the end of the gear bearing away from the two-way transmission gear is fixedly connected to a lifting column.

[0010] Preferably, one end of the large gear is fixedly connected to a cleaning roller, a scraping brush is tightly fitted on the outer wall of the cleaning roller, one end of the scraping brush is fixedly connected to a limiting long plate, and the limiting long plate is fixedly connected to the ventilation plate.

[0011] Preferably, the method for using the dust filter for civil air defense ventilation comprises the following steps: S1: When cleaning the filter, the drive motor rotates intermittently, so that the connected transmission belt drives the first gear to rotate, and the three first gears rotate synchronously through the connection of the rack belt, driving the connected rolling shaft and the filter to rotate, and the filter under the protective cover plate is moved and adjusted, and then the air pump is driven to operate intermittently, so that the internal compressed air enters the air outlet plate through the air pipe, and is released through the multiple holes opened to back-blow and clean the filter surface. When it contacts the blocked filter surface, the holes on the surface of the blocked position prevent the gas from being released, so that it gathers inside the warehouse protective cover plate and passes through The connected air intake pipe enters the wrapping tube, squeezes the second compression cushion column connected inside the air intake bin, releases the gas inside the air intake bin, and at the same time, the second compression cushion column drives the second connecting block to move downward, so that the second connecting block lifts up the first connecting block through the pry rod column, and compresses the spring of the contact protection cover plate, and at the same time pulls up the first compression cushion column, so that the absorption pipe connected to the water pressure bin draws the water inside the water storage bin. At this time, the air pump stops, so that the compressed spring above the first connecting block is released, and the first compression cushion column is pushed to make the water inside the water pressure bin enter the multi-head spray gun for spraying, so as to clean the filter screen; S2: When the filter is washed by water, it can be cleaned synchronously with the cleaning roller that continuously rotates under the filter. When the driving motor moves, the connected first bevel gear drives the second bevel gear and the gear shaft to rotate at the same time, so that the transmission shaft and the middle gear connected to the gear shaft drive the two large gears connected to the outer wall to rotate, so that the cleaning roller connected to the large gear rotates and cleans the surface of the filter; S3: When the driving motor is rotating, the pinion connected to the output shaft synchronously drives the two-way transmission gears on both sides to rotate in the same direction, so that the two two-way transmission gears rotating in the same direction drive the two gear bearings to rotate in the opposite direction, and at the same time drive the connected lifting column to rotate, so that the lifting column contacts the transverse groove of the compound disc while rotating, driving the compound disc and the connected right-angle plate to perform intermittent reciprocating rotation, so that the two connected cleaning rollers can be replaced and cleaned while cleaning the filter. At the same time, when the cleaning roller rotates, the surface can contact the scraping brush to clean the dust attached to the surface of the cleaning roller, thereby completing the cleaning of the filter.

[0012] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, internal air is filtered through the filter. When cleaning, the internal air pump allows the compressed gas to enter the air outlet plate through the connected air supply pipe for release, and the dust attached to the surface of the filter is backblown and cleaned. When it contacts the blocked surface of the filter, the generated gas will pass through the inside of the air inlet pipe, release the compressed gas, and squeeze the second compression cushion column to move downward, while driving the second connecting block to drive the first connecting block to rise through the pry rod column, so that the first compression cushion column rises, so that the water inside the water storage tank is extracted through the absorption pipe inside the water pressure tank. At this time, the air pump stops, so that the compressed spring pushed up by the first connecting block is released, so that the first compression cushion column squeezes the water inside the water pressure tank and releases it through the multi-head spray gun, and the surface of the filter is cleaned. The amount of water released can be adjusted according to the degree of blockage of the filter, which can clean more accurately and reduce the waste of water resources.

[0013] In the present invention, when the cleaning roller is performing rotational cleaning, the connected two-way transmission gear drives the transmission shafts on both sides to rotate, so that the lifting columns on both sides rotate in the opposite direction and can contact the compound disk during rotation, so that the compound disk drives the right-angle pillars and the two cleaning rollers to perform replacement reciprocating cleaning during self-rotation and cleaning. At the same time, when the cleaning roller reciprocates, it can contact the surface of the scraper brush to pick up the attached dust again, so that the replacement time of the cleaning roller is increased, which is more conducive to the cleaning of the filter surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of a cutaway three-dimensional structure of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the filter screen and the rolling shaft of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the first gear and the rack belt of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the rotating mechanism of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the rotating mechanism and the reciprocating mechanism of the present invention; Figure 7 It is a schematic diagram of the cross-sectional three-dimensional structure of the cleaning mechanism of the present invention; Figure 8 It is a partial cross-sectional three-dimensional structural schematic diagram of the cleaning mechanism of the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the cleaning mechanism of the present invention when viewed from above.

[0015] In the figure: 1, ventilation plate; 2, fixing frame; 3, protective cover plate; 4, cleaning mechanism; 41, water pressure tank; 42, first compression pad column; 43, first connecting block; 44, two-way telescopic column; 45, pry bar column; 46, second connecting block; 47, second compression pad column; 48, air inlet tank; 49, air inlet pipe; 410, air delivery pipe; 411, pipeline fixing plate; 412, multi-head spray gun; 413, absorption pipe; 414, water storage tank; 415, air outlet plate; 416, check valve; 417, wrapping cylinder; 418, air pump; 419, spring; 5, driving motor; 6, transmission belt; 7, rotating column; 8, first gear; 9, Rolling shaft; 10. Rack belt; 11. Filter; 12. First bevel gear; 13. Second bevel gear; 14. Right-angle pillar; 15. Gear shaft; 16. Rotating mechanism; 161. Compound disc; 162. Reinforcement plate; 163. Right-angle plate; 164. Circular column; 165. Large gear; 166. Transmission shaft; 167. Middle gear; 17. Small gear; 18. Reciprocating mechanism; 181. Bidirectional transmission gear; 182. First stabilizing column; 183. Gear bearing; 184. Second stabilizing column; 185. Lifting column; 19. Cleaning roller; 20. Installing square plate; 21. Scraping brush; 22. Limiting long plate; 23. Square bin. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0017] See also Figures 1 to 9 The present invention provides a technical solution: a dust filter for civil air defense ventilation, comprising a ventilation plate 1, a fixing frame 2 is installed on the inner wall of the ventilation plate 1, a protective cover plate 3 is fixedly connected to one side of the fixing frame 2, and a cleaning mechanism 4 for cleaning a blocked filter screen is fixedly connected to the inner wall of the protective cover plate 3; A driving motor 5 is fixedly penetrated inside the right side of the ventilation plate 1, and a transmission belt 6 is provided on the outer wall of the output shaft of the driving motor 5. The driving motor 5 is connected to a rotating column 7 through the transmission belt 6, and the rotating column 7 is rotatably connected to the ventilation plate 1. One end of the rotating column 7 is fixedly connected to a first gear 8, and one end of the first gear 8 is fixedly connected to a rolling shaft 9. The outer wall of the first gear 8 is meshed with a rack belt 10, and the outer wall of the rolling shaft 9 is tightly fitted with a filter screen 11. The outer wall of the ventilation plate 1 is fixedly connected to an installation square plate 20, and a square bin 23 is installed on the right side of the ventilation plate 1, and the square bin 23 is fixedly connected to the outer wall of the driving motor 5.

[0018] In this embodiment, Figure 1, Figure 2 , Figure 7 and Figure 8 As shown, the cleaning mechanism 4 includes a water pressure tank 41, which is fixedly connected to the inner wall of the protective cover plate 3, and the inner wall of the water pressure tank 41 is movably connected with a first compression pad column 42, the upper end of the first compression pad column 42 is fixedly connected with a first connecting block 43, the outer wall of the first connecting block 43 is fixedly connected with a spring 419, and the spring 419 is fixedly connected to the protective cover plate 3, the upper end of the first connecting block 43 is hinged with a two-way telescopic column 44, the internal movement of the two-way telescopic column 44 is penetrated by a pry rod column 45, the pry rod column 45 is fixedly connected to the protective cover plate 3, the end of the two-way telescopic column 44 away from the first connecting block 43 is hinged with a second connecting block 46, the lower end of the second connecting block 46 is fixedly connected with a second compression pad column 47, the outer wall of the second compression pad column 47 is movably sleeved with a wrapping tube 417, the lower end of the wrapping tube 417 is fixedly connected with an air intake tank 48, the air intake tank 48 is movably sleeved on the outer wall of the second compression pad column 47, and the air intake tank 48 is fixedly connected to the inner wall of the protective cover plate 3.

[0019] In this embodiment, Figure 1 , Figure 2 , Figure 7 , Figure 8 and Fig. 9 As shown, the outer wall of the wrapping tube 417 is fixedly connected to the air inlet pipe 49, and one side of the air inlet bin 48 is provided with an air delivery pipe 410 fixedly connected to the protective cover plate 3, the upper end of the air delivery pipe 410 is fixedly connected to the air pump machine 418, and the air pump machine 418 is fixedly connected to the protective cover plate 3, and the lower end of the air delivery pipe 410 is fixedly connected to the air outlet plate 415, and the air inlet pipe 49 runs through the air outlet plate 415, and the lower end of the air outlet plate 415 is internally installed with a check valve 416. The outer wall of the air outlet plate 415 is tightly fitted with the multi-head spray gun 412, the upper end of the multi-head spray gun 412 is tightly fitted with the pipe fixing plate 411, the interior of the pipe fixing plate 411 is penetrated by an absorption pipe 413, the lower end of the absorption pipe 413 is fixedly connected to the water pressure tank 41, the upper end of the absorption pipe 413 is fixedly connected to the water storage tank 414, the water storage tank 414 is fixedly connected to the protective cover plate 3, and the water supply pipe of the multi-head spray gun 412 is fixedly connected to the lower end of the water pressure tank 41.

[0020] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the outer wall of the output shaft of the driving motor 5 is fixedly connected with the first bevel gear 12, the outer wall of the first bevel gear 12 is meshedly connected with the second bevel gear 13, the upper end of the second bevel gear 13 is rotatably connected with a right-angle pillar 14, the right-angle pillar 14 is fixedly connected to the ventilation plate 1, the outer wall of the second bevel gear 13 is meshedly connected with a gear shaft 15, the gear shaft 15 is rotatably connected to the output shaft of the driving motor 5, one end of the gear shaft 15 is fixedly connected with a rotating mechanism 16, the rotating mechanism 16 is fixedly connected to the ventilation plate 1, a pinion 17 fixedly connected to the output shaft of the driving motor 5 is arranged below the second bevel gear 13, the outer wall of the pinion 17 is meshedly connected with a reciprocating mechanism 18, and the reciprocating mechanism 18 is fixedly connected to the ventilation plate 1.

[0021] In this embodiment, Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, the rotating mechanism 16 includes a compound disc 161, the outer wall of the compound disc 161 is provided with a groove, the outer wall of the compound disc 161 is movably sleeved with a reinforcing plate 162, the reinforcing plate 162 is fixedly connected to the ventilation plate 1, the interior of the compound disc 161 is movably penetrated by a transmission shaft 166, the transmission shaft 166 is fixedly connected to the gear shaft 15, the outer wall of the reinforcing plate 162 is tightly fitted with a right-angle plate 163, the right-angle plate 163 is fixedly connected to the compound disc 161, one side of the right-angle plate 163 is fixedly connected to two circular columns 164, one end of the two circular columns 164 is rotatably connected to a large gear 165, the outer wall of the transmission shaft 166 is fixedly connected to a middle gear 167, and the middle gear 167 is meshedly connected to the two large gears 165.

[0022] In this embodiment, Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, the reciprocating mechanism 18 includes two two-way transmission gears 181, and the two two-way transmission gears 181 are meshedly connected to the pinion 17. The outer wall of the two-way transmission gear 181 is movably sleeved with a first stabilizing column 182, and the first stabilizing column 182 is fixedly connected to the ventilation plate 1. The end of the two-way transmission gear 181 away from the pinion 17 is meshedly connected to a gear bearing 183, and the outer wall of the gear bearing 183 is movably sleeved with a second stabilizing column 184, and the second stabilizing column 184 is fixedly connected to the ventilation plate 1, and the end of the gear bearing 183 away from the two-way transmission gear 181 is fixedly connected to a lifting column 185.

[0023] In this embodiment, Figure 1 , Figure 2 and Figure 6As shown, one end of the large gear 165 is fixedly connected to a cleaning roller 19, and a scraping brush 21 is tightly fitted on the outer wall of the cleaning roller 19. One end of the scraping brush 21 is fixedly connected to a limiting long plate 22, and the limiting long plate 22 is fixedly connected to the ventilation plate 1. A circular hole is opened on one side of the ventilation plate 1.

[0024] The use method and advantages of the present invention: The use method of the dust filter for civil air defense ventilation, the working process is as follows: like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 As shown: S1: When cleaning the filter 11, the driving motor 5 rotates intermittently, so that the connected transmission belt 6 drives the first gear 8 to rotate, and the three first gears 8 rotate synchronously through the connection of the rack belt 10, driving the connected rolling shaft 9 and the filter 11 to rotate, and the filter 11 under the protective cover plate 3 is moved and adjusted, and then the air pump 418 is driven to operate intermittently, so that the internal compressed air enters the air outlet plate 415 through the air supply pipe 410, and is released through the multiple holes opened, and the surface of the filter 11 is back-blown and cleaned. When the surface of the filter 11 is blocked, the holes on the surface of the blocked position prevent the gas from being released, so that it gathers inside the warehouse protective cover plate 3 and enters the bag through the connected air intake pipe 49. In the wrapping tube 417, the second compression cushion column 47 connected to the inside of the air inlet bin 48 is squeezed to release the gas inside the air inlet bin 48, and at the same time, the second compression cushion column 47 drives the second connecting block 46 to move downward, so that the second connecting block 46 lifts the first connecting block 43 through the pry rod column 45, and compresses the spring 419 of the contact protection cover plate 3, and at the same time, the first compression cushion column 42 is pulled up, so that the absorption pipe 413 connected to the water pressure bin 41 extracts the water inside the water storage bin 414. At this time, the air pump machine 418 stops, so that the compressed spring 419 above the first connecting block 43 is released, and the first compression cushion column 42 is pushed to make the water inside the water pressure bin 41 enter the multi-head spray gun 412 for spraying, so as to clean the filter screen 11; S2: When the filter 11 is washed with water, it can be cleaned synchronously with the cleaning roller 19 that continuously rotates below the filter 11. When the driving motor 5 moves, the connected first bevel gear 12 drives the second bevel gear 13 and the gear shaft 15 to rotate at the same time, so that the transmission shaft 166 and the middle gear 167 connected to the gear shaft 15 rotate and drive the two large gears 165 connected to the outer wall to rotate, so that the cleaning roller 19 connected to the large gear 165 can rotate and clean the surface of the filter 11; S3: When the driving motor 5 is rotating, the pinion 17 connected to the output shaft synchronously drives the two-way transmission gears 181 on both sides to rotate in the same direction, so that the two two-way transmission gears 181 rotating in the same direction drive the two gear bearings 183 to rotate in the opposite direction, and at the same time drive the connected lifting column 185 to rotate, so that the lifting column 185 rotates and contacts the transverse groove of the compound disc 161, so that the lifting column 185 on the left rotates counterclockwise, driving the compound disc 161 to rotate 90 degrees clockwise. After the rotation is completed, the lifting column 185 on the right rotates clockwise, driving the compound disc 161 to rotate 90 degrees counterclockwise, so that the compound disc 161 and the connected right-angle plate 163 perform intermittent reciprocating rotation, so that the two connected cleaning rollers 19 can be replaced and cleaned while cleaning the filter 11. At the same time, when the cleaning roller 19 rotates, the surface can contact the scraper brush 21 to clean the dust attached to the surface of the cleaning roller 19, thereby completing the cleaning of the filter 11.

[0025] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A dust filter for civil air defense ventilation, comprising a ventilation plate (1), a fixing frame (2) being mounted on the inner wall of the ventilation plate (1), a protective cover plate (3) being fixedly connected to one side of the fixing frame (2), and a cleaning mechanism (4) for cleaning a clogged filter screen being fixedly connected to the inner wall of the protective cover plate (3); Features: A drive motor (5) is fixedly inserted through the right side of the ventilation plate (1); a transmission belt (6) is arranged on the outer wall of the output shaft of the drive motor (5); the drive motor (5) is connected to a rotating column (7) through the transmission belt (6); the rotating column (7) is rotatably connected to the ventilation plate (1); one end of the rotating column (7) is fixedly connected to a first gear (8); one end of the first gear (8) is fixedly connected to a rolling shaft (9); the outer wall of the first gear (8) is meshedly connected to a rack belt (10); the outer wall of the rolling shaft (9) is tightly fitted with a filter screen (11); the outer wall of the ventilation plate (1) is fixedly connected to a mounting square plate (20); a square bin (23) is installed on the right side of the ventilation plate (1); the square bin (23) is fixedly connected to the outer wall of the drive motor (5).

2. A dust filter for civil air defense ventilation according to claim 1, characterized in that: The cleaning mechanism (4) comprises a water pressure tank (41), the water pressure tank (41) being fixedly connected to the inner wall of the protective cover plate (3), the inner wall of the water pressure tank (41) being movably connected with a first compression cushion column (42), the upper end of the first compression cushion column (42) being fixedly connected with a first connecting block (43), the outer wall of the first connecting block (43) being fixedly connected with a spring (419), the spring (419) being fixedly connected to the protective cover plate (3), the upper end of the first connecting block (43) being hinged with a bidirectional telescopic column (44), the interior of the bidirectional telescopic column (44) being movably penetrated by a pry rod column (419) 45), the pry bar column (45) is fixedly connected to the protective cover plate (3), the end of the bidirectional telescopic column (44) away from the first connecting block (43) is hinged with a second connecting block (46), the lower end of the second connecting block (46) is fixedly connected to a second compression cushion column (47), the outer wall of the second compression cushion column (47) is movably sleeved with a wrapping tube (417), the lower end of the wrapping tube (417) is fixedly connected with an air intake bin (48), the air intake bin (48) is movably sleeved on the outer wall of the second compression cushion column (47), and the air intake bin (48) is fixedly connected to the inner wall of the protective cover plate (3).

3. A dust filter for civil air defense ventilation according to claim 2, characterized in that: An air inlet pipe (49) is fixedly connected to the outer wall of the wrapping tube (417); an air supply pipe (410) fixedly connected to the protective cover plate (3) is provided on one side of the air inlet bin (48); an air pump (418) is fixedly connected to the upper end of the air supply pipe (410); the air pump (418) is fixedly connected to the protective cover plate (3); the lower end of the air supply pipe (410) is fixedly connected to an air outlet plate (415); the air inlet pipe (49) passes through the air outlet plate (415); a check valve (416) is installed inside the lower end of the air outlet plate (415); The outer wall of the air outlet plate (415) is tightly fitted with a multi-head spray gun (412), the upper end of the multi-head spray gun (412) is tightly fitted with a pipe fixing plate (411), an absorption pipe (413) penetrates the interior of the pipe fixing plate (411), the lower end of the absorption pipe (413) is fixedly connected to the water pressure tank (41), the upper end of the absorption pipe (413) is fixedly connected to a water storage tank (414), the water storage tank (414) is fixedly connected to the protective cover plate (3), and the water delivery pipe of the multi-head spray gun (412) is fixedly connected to the lower end of the water pressure tank (41).

4. A dust filter for civil air defense ventilation according to claim 1, characterized in that: The outer wall of the output shaft of the drive motor (5) is fixedly connected to a first bevel gear (12), the outer wall of the first bevel gear (12) is meshedly connected to a second bevel gear (13), the upper end of the second bevel gear (13) is rotatably connected to a right-angle support (14), the right-angle support (14) is fixedly connected to the ventilation plate (1), the outer wall of the second bevel gear (13) is meshedly connected to a gear shaft (15), the gear shaft (15) is rotatably connected to the output shaft of the drive motor (5), one end of the gear shaft (15) is fixedly connected to a rotating mechanism (16), the rotating mechanism (16) is fixedly connected to the ventilation plate (1), a pinion gear (17) fixedly connected to the output shaft of the drive motor (5) is arranged below the second bevel gear (13), the outer wall of the pinion gear (17) is meshedly connected to a reciprocating mechanism (18), the reciprocating mechanism (18) is fixedly connected to the ventilation plate (1).

5. A dust filter for civil air defense ventilation according to claim 4, characterized in that: The rotating mechanism (16) comprises a composite disc (161), the outer wall of the composite disc (161) is provided with a groove, the outer wall of the composite disc (161) is movably sleeved with a reinforcing plate (162), the reinforcing plate (162) is fixedly connected to the ventilation plate (1), a transmission shaft (166) is movably penetrated inside the composite disc (161), the transmission shaft (166) is fixedly connected to the gear shaft (15), a right-angle plate (163) is tightly fitted on the outer wall of the reinforcing plate (162), the right-angle plate (163) is fixedly connected to the composite disc (161), one side of the right-angle plate (163) is fixedly connected to two circular columns (164), one end of the two circular columns (164) is rotatably connected to a large gear (165), the outer wall of the transmission shaft (166) is fixedly connected to a middle gear (167), the middle gear (167) is meshingly connected to the two large gears (165).

6. A dust filter for civil air defense ventilation according to claim 4, characterized in that: The reciprocating mechanism (18) comprises two bidirectional transmission gears (181), the two bidirectional transmission gears (181) are meshedly connected to the pinion gear (17), the outer wall of the bidirectional transmission gear (181) is movably sleeved with a first stabilizing column (182), the first stabilizing column (182) is fixedly connected to the ventilation plate (1), the end of the bidirectional transmission gear (181) away from the pinion gear (17) is meshedly connected to a gear bearing (183), the outer wall of the gear bearing (183) is movably sleeved with a second stabilizing column (184), the second stabilizing column (184) is fixedly connected to the ventilation plate (1), and the end of the gear bearing (183) away from the bidirectional transmission gear (181) is fixedly connected to a lifting column (185).

7. A dust filter for civil air defense ventilation according to claim 5, characterized in that: One end of the large gear (165) is fixedly connected to a cleaning roller (19), a scraping brush (21) is tightly fitted to the outer wall of the cleaning roller (19), one end of the scraping brush (21) is fixedly connected to a limiting long plate (22), and the limiting long plate (22) is fixedly connected to the ventilation plate (1).

8. A method for using a dust filter for civil air defense ventilation, using the dust filter for civil air defense ventilation as claimed in any one of claims 1 to 7, characterized in that: The steps include: S1: When cleaning the filter (11), the drive motor (5) is intermittently rotated, so that the connected transmission belt (6) drives the first gear (8) to rotate, and the three first gears (8) are connected by the rack belt (10) to rotate synchronously, driving the connected rolling shaft (9) and the filter (11) to rotate, so that the filter (11) below the protective cover plate (3) is moved and adjusted, and then the air pump (418) is driven to operate intermittently, so that the internal compressed air enters the inside of the air outlet plate (415) through the air supply pipe (410), is released through the multiple holes opened, and the surface of the filter (11) is back-blown and cleaned. When the gas contacts the blocked surface of the filter (11), the holes on the surface at the blocked position prevent the gas from being released, so that the gas gathers inside the warehouse protective cover plate (3) and enters the packaging cylinder (415) through the connected air intake pipe (49). 7), the second compression pad column (47) connected to the inside of the air inlet bin (48) is squeezed to release the gas inside the air inlet bin (48), and at the same time, the second compression pad column (47) drives the second connection block (46) to move downward, so that the second connection block (46) lifts the first connection block (43) through the pry rod column (45), and compresses the spring (419) of the contact protection cover plate (3), and at the same time, the first compression pad column (42) is pulled up, so that the absorption pipe (413) connected to the water pressure bin (41) extracts the water inside the water storage bin (414), and at this time, the air pump (418) stops, so that the compressed spring (419) above the first connection block (43) is released, and the first compression pad column (42) is pushed to make the water inside the water pressure bin (41) enter the multi-head spray gun (412) for spraying, so as to clean the filter (11); S2: When the filter (11) is washed with water, it can be cleaned synchronously with the cleaning roller (19) that continuously rotates below the filter (11). When the drive motor (5) moves, the connected first bevel gear (12) drives the second bevel gear (13) and the gear shaft (15) to rotate at the same time, so that the transmission shaft (166) and the middle gear (167) connected to the gear shaft (15) rotate and drive the two large gears (165) connected to the outer wall to rotate, so that the cleaning roller (19) connected to the large gear (165) performs rotational cleaning on the surface of the filter (11); S3: When the driving motor (5) is rotating, the pinion (17) connected to the output shaft synchronously drives the two-way transmission gears (181) on both sides to rotate in the same direction, so that the two two-way transmission gears (181) rotating in the same direction drive the two gear bearings (183) to rotate in the opposite direction, and at the same time drive the connected lifting column (185) to rotate, so that the lifting column (185) contacts the transverse groove of the compound disc (161) while rotating, driving the compound disc (161) and the connected right-angle plate (163) to perform intermittent reciprocating rotation, so that the two connected cleaning rollers (19) can be replaced and cleaned while cleaning the filter (11), and at the same time, when the cleaning roller (19) rotates, the surface can contact the scraper brush (21), and the dust attached to the surface of the cleaning roller (19) is cleaned, thereby completing the cleaning of the filter (11).

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