CN216481411U - Civil air defense basement ventilation unit - Google Patents

Abstract

The utility model relates to a people's air defense basement ventilation unit belongs to the technical field of basement ventilation, and people's air defense basement ventilation unit includes the wall body and sets up the air passage on the wall body, air passage's longitudinal section is the rectangle, it is provided with the filter screen that is used for filtered air to slide in the air passage, the slip direction perpendicular to air passage's of filter screen extending direction, set up the clearance groove that is used for supplying the filter screen to slide in or the roll-off on the relative inner wall of air passage, half of filter screen is located the clearance inslot, and half is located the air passage, arbitrary be provided with in the clearance inslot and be used for ordering about the gliding driving piece of filter screen, be provided with in the clearance inslot and be used for carrying out the clearance subassembly of clearing up half filter screen that is located the clearance inslot. This application has and clears up the dust impurity on the filter screen, reduces the effect to basement air quality influence.

Description

Civil air defense basement ventilation unit

Technical Field

The application relates to the technical field of basement ventilation, in particular to a civil air defense basement ventilation device.

Background

The civil air defense basement is one of civil air defense engineering, comprises an outer wall, a buffer wall, an explosion door, a closed wall, a protective partition wall and the like, and is mainly used for civil air defense temporary shelters, wartime air defense command centers, communication centers, shelters and the like. Because the air in the basement is mainly communicated with the outside air through the civil air defense door, a ventilating device is usually arranged in the civil air defense basement to improve the air in the basement.

Among the correlation technique, people's air defense basement ventilation unit includes the underground space who is enclosed by the wall body, sets up the access & exit that supplies personnel to pass in and out on the wall body, rotates on the wall body to be connected with the people's air defense door that is used for opening or closing the access & exit, has seted up air passage on the wall body, and air passage is used for intercommunication basement air and outside air, is provided with the filter screen in the air passage, and negative-pressure air fan is installed to the one end that air passage kept away from the basement direction. The negative pressure fan is started to exchange the outside air with the air in the basement, and the filter screen filters the air entering the basement, so that the quality of the air entering the basement is improved.

In view of the above-mentioned related art, the inventor found that a large amount of dust and impurities adhere to the filter screen after a certain period of time, which affects the quality of air entering the basement.

SUMMERY OF THE UTILITY MODEL

For clearing up dust impurity on the filter screen, reduce the influence to basement air quality, this application provides a people's air defense basement ventilation unit.

The application provides a people's air defense basement ventilation unit adopts following technical scheme:

the utility model provides a people's air defense basement ventilation unit, includes the wall body and sets up the air duct on the wall body, air duct's longitudinal section is the rectangle, it is provided with the filter screen that is used for filtered air to slide in the air duct, the slip direction perpendicular to air duct's of filter screen extending direction, set up the clearance groove that is used for supplying filter screen cunning or roll-off on the inner wall that air duct is relative, half of filter screen is located the clearance inslot, and half is located air duct, arbitrary be provided with in the clearance inslot and be used for ordering about the gliding driving piece of filter screen, be provided with in the clearance inslot and be used for carrying out the clearance subassembly of clearance to half of filter screen that is located the clearance inslot.

By adopting the technical scheme, the filter screens are driven to slide by the driving part regularly, so that half of the filter screens in the cleaning groove are moved into the air channel, the other half of the filter screens are moved into the opposite cleaning groove, and the filter screens in the cleaning groove are cleaned by the cleaning assembly in the cleaning groove; after a certain time, order about the filter screen through the driving piece and slide in the opposite direction, push away to the air duct in half the filter screen that will be located the clearance inslot to drive half filter screen and remove to offside clearance inslot, thereby realize the alternate use of filter screen, and clear up the filter screen that is located the clearance inslot through the clearance subassembly, thereby reduce the air quality that dust impurity on the filter screen influences entering basement.

Preferably, the clearance subassembly is including the slip setting at the clearance frame of clearance inslot, the brush hair of setting on the clearance frame and the sliding member of setting in the clearance inslot, the sliding member is used for ordering about the clearance frame and drives the brush hair slip, the slip direction of clearance frame is on a parallel with the slip direction of filter screen, the clearance frame is used for the slip cover to establish on the filter screen, the brush hair is located the one side that the clearance frame is close to the filter screen, the brush hair be used for with the filter screen butt.

Through adopting above-mentioned technical scheme, order about the clearance frame through the sliding part and drive the brush hair slip, the brush hair slides the in-process and clears up the filter screen both sides that are located the clearance inslot to reduce the influence of dust impurity on the filter screen to the air quality in the basement.

Preferably, the sliding part comprises a screw rod and a micro motor, the screw rod is rotatably arranged in the cleaning groove, the micro motor is arranged in the cleaning groove, the rotating axis of the screw rod is parallel to the sliding direction of the cleaning frame, the cleaning frame is in threaded connection with the screw rod, and the micro motor is used for driving the screw rod to rotate.

Through adopting above-mentioned technical scheme, start micro motor, micro motor orders about the lead screw and rotates, and the lead screw drives the clearance frame and slides for the clearance frame drives the brush hair and slides, so that the brush falls the dust impurity on the filter screen, in order to reduce the influence of dust impurity to basement air quality.

Preferably, the driving part comprises an electric push rod arranged in any cleaning groove, the extending direction of the electric push rod is parallel to the sliding direction of the filter screen, and the filter screen is connected with the output end of the electric push rod.

Through adopting above-mentioned technical scheme, start electric putter, electric putter promotes the filter screen and slides to be convenient for regularly push the clearance inslot with half of filter screen, clear up the filter screen, be favorable to reducing the influence of dust impurity to basement air quality.

Preferably, the filter screen includes first dictyosome, sets up the connecting plate on first dictyosome and sets up the second dictyosome of keeping away from first dictyosome one side at the connecting plate, one side that the connecting plate was kept away from to first dictyosome is provided with the mounting panel, the mounting panel is connected with electric putter's output, the notch border of clearance groove is provided with two butt pieces that are close to each other, butt piece includes butt portion and the portion of moving into, butt portion and the integrative shaping of portion of moving into, butt portion and clearance groove border are connected, butt portion be used for with connecting plate or mounting panel butt, two butt portion is close to relatively along the extending direction of air duct, two move into the portion and surpass to the direction slope of keeping away from each other.

By adopting the technical scheme, after the first net body and the second net body are moved to the required positions, the abutting parts abut against the mounting plate or the connecting plate, so that the damage to the filter screen is reduced, and meanwhile, because the two abutting parts are relatively close to each other along the extending direction of the air channel, the air in the air channel is not easy to enter the cleaning groove, so that the dust and impurities in the cleaning groove are not easy to influence the air quality in the air channel; the two moving-in parts incline towards the direction away from each other so as to facilitate the sliding of the first net body and the second net body.

Preferably, the first net body and the second net body are provided with cambered surfaces on two sides along the sliding direction, and the cambered surfaces are outwards convex towards the direction away from each other.

Through adopting above-mentioned technical scheme, the setting of cambered surface is facilitated for the slip of first dictyosome and second dictyosome, reduces first dictyosome and second dictyosome respectively with the butt portion between the friction.

Preferably, a guide rod is arranged in the cleaning groove, the length direction of the guide rod is parallel to the length direction of the screw rod, and one side of the cleaning frame, which is far away from the screw rod, is sleeved on the guide rod in a sliding manner.

Through adopting above-mentioned technical scheme, the setting up of guide bar leads to for the slip of clearance frame, is favorable to the clearance frame to drive the steady slip of brush hair, improves the slip effect of clearance frame.

Preferably, the sliding direction of the filter screen is arranged along the horizontal direction, and a collecting tank for collecting dust and impurities is arranged on the inner wall of the cleaning tank.

Through adopting above-mentioned technical scheme, the dust impurity that the brush hair brushed on the filter screen dropped drops to the collecting vat in to centralized processing reduces simultaneously that the clearance frame slides the in-process and drives the dust and raise.

In summary, the present application includes at least one of the following beneficial technical effects:

the filter screens are driven to slide by the driving part regularly, so that one half of the filter screens in the cleaning groove are moved into the air channel, the other half of the filter screens are moved into the opposite cleaning groove, and the filter screens in the cleaning groove are cleaned by the cleaning assembly in the cleaning groove; after a certain time, the driving part drives the filter screens to slide in the opposite direction, and half of the filter screens in the cleaning groove are pushed into the air channel, so that the other half of the filter screens are driven to move into the opposite cleaning groove, the filter screens are alternately used, the filter screens in the cleaning groove are cleaned through the cleaning assembly, and the influence of dust impurities on the filter screens on the air quality entering the basement is reduced;

because two butt portions are close to relatively along air passage's extending direction for the air in the air passage is difficult for getting into the clearance inslot, makes the dust impurity of clearance inslot be difficult for influencing the air quality in the air passage, thereby reduces the influence of dust impurity to basement air quality.

Drawings

Fig. 1 is a sectional view of the entire structure of an embodiment of the present application.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Fig. 3 is a partial structural sectional view of an embodiment of the present application, which is mainly used for showing a structure in a cleaning tank.

Fig. 4 is an enlarged view of a portion B in fig. 3.

Description of reference numerals: 1. a wall body; 2. an air passage; 3. cleaning the tank; 4. a filter screen; 41. a first net body; 42. a connecting plate; 43. a second mesh body; 5. cleaning the assembly; 51. cleaning the frame; 52. brushing; 53. a sliding member; 531. a screw rod; 532. a micro motor; 6. an electric push rod; 7. mounting a plate; 8. abutting the sheet; 81. an abutting portion; 82. a moving-in part; 9. a guide bar; 10. collecting tank; 11. a closing plate; 12. a restraining bar; 13. a limiting hole; 14. a handle nut; 15. mounting grooves; 16. a groove; 17. a bump; 18. a guide groove; 19. and a guide block.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses people's air defense basement ventilation unit. Referring to fig. 1 and 2, people's air defense basement ventilation unit includes wall body 1 and sets up the air passage 2 on wall body 1, air passage 2 extends along the horizontal direction, the longitudinal section of air passage 2 is the rectangle, 1 internal rotations in wall are provided with and are used for opening and close the closure plate 11 of air passage 2, it is provided with limiting rod 12 to rotate on the wall body 1 inner wall, the axis of rotation of limiting rod 12 is on a parallel with the axis of rotation of closure plate 11, offer the spacing hole 13 that is used for supplying limiting rod 12 to pass on the closure plate 11, threaded connection has handle nut 14 on limiting rod 12, handle nut 14 is used for keeping away from one side butt of air passage 2 with closure plate 11.

When the basement needs to be closed, the closing plate 11 is rotated towards the direction close to the air channel 2, the closing plate 11 closes the air channel 2, the limiting rod 12 is rotated towards the direction close to the limiting hole 13, the limiting rod 12 is moved into the limiting hole 13, and the handle nut 14 is rotated, so that the handle nut 14 is tightly abutted against one side, far away from the air channel 2, of the closing plate 11, and the closing plate 11 and the wall body 1 are fixed relatively; when the basement needs the ventilation, rotate handle nut 14, make handle nut 14 break away from with the one side that air channel 2 was kept away from to closing plate 11, rotate limiting rod 12, will limit rod 12 and shift out spacing hole 13, can rotate closing plate 11 towards the direction of keeping away from air channel 2, realize opening of air channel 2.

Referring to fig. 3 and 4, a filter screen 4 for filtering air is slidably disposed in the air channel 2, a sliding direction of the filter screen 4 is perpendicular to an extending direction of the air channel 2, the sliding direction of the filter screen 4 is set along a horizontal direction, a cleaning groove 3 for moving the filter screen 4 in or out is formed in an inner wall of the air channel 2, the filter screen 4 includes a first screen body 41, a second screen body 43 and a connecting plate 42 fixedly connected between the first screen body 41 and the second screen body 43, and when the first screen body 41 is located in the cleaning groove 3, the second screen body 43 is located in the air channel 2; when the first net body 41 is positioned in the air passage 2, the second net body 43 is positioned in the cleaning tank 3; a driving piece for driving the first net body 41 and the second net body 43 to slide is arranged in any cleaning groove 3, and a cleaning assembly 5 for cleaning the first net body 41 or the second net body 43 in the cleaning groove 3 is arranged in the cleaning groove 3.

Referring to fig. 3 and 4, in order to facilitate the sliding of the first net body 41 and the second net body 43, a mounting groove 15 is formed in the bottom wall of any cleaning groove 3, the driving member includes an electric push rod 6 fixedly mounted in the mounting groove 15, the extending direction of the electric push rod 6 is parallel to the sliding direction of the first net body 41, and the first net body 41 is fixedly connected with the output end of the electric push rod 6. In other embodiments, the electric push rod 6 may be replaced with an air cylinder, an electric cylinder, or the like.

When the second net body 43 needs to be cleaned, the electric push rod 6 is started to push the first net body 41 to slide towards the direction close to the air channel 2, the first net body 41 is moved into the air channel 2, the first net body 41 drives the second net body 43 to move into the cleaning groove 3 opposite to the electric push rod 6, the first net body 41 filters wind passing through the air channel 2, and the cleaning assembly 5 in the cleaning groove 3 on the side far away from the electric push rod 6 is used for cleaning the second net body 43, so that the influence of dust and impurities on the second net body 43 on the air quality of the basement is reduced; after a certain period, be attached to a large amount of dust impurity on the first dictyosome 41, start the first dictyosome 41 of 6 stimulations of electric putter and slide towards the direction that is close to electric putter 6, with the immigration of first dictyosome 41 in the clearance groove 3 that is close to electric putter 6 one side, second dictyosome 43 is located 2 interior air to the passing through of air duct and filters this moment, clear up first dictyosome 41 through the clearance subassembly 5 that is close to 6 one side clearance grooves 3 of electric putter, and is simple and convenient, thereby reduce the air quality that dust impurity influences and gets into the basement.

Referring to fig. 3 and 4, the cleaning assembly 5 includes a cleaning frame 51 slidably disposed in the cleaning slot 3, bristles 52 disposed on the cleaning frame 51, and a sliding member 53 disposed in the cleaning slot 3, the sliding member 53 is configured to drive the cleaning frame 51 to drive the bristles 52 to slide, a longitudinal section of the cleaning frame 51 is rectangular, a sliding direction of the cleaning frame 51 is parallel to a sliding direction of the filter screen 4, the cleaning frame 51 is configured to be slidably sleeved on the first net body 41 or the second net body 43, the bristles 52 are located on a side of the cleaning frame 51 close to the first net body 41 or the second net body 43, the bristles 52 are configured to abut against the first net body 41 or the second net body 43, and in this embodiment, the bristles 52 are hard bristles.

Referring to fig. 3 and 4, a groove 16 is formed in the inner wall of the cleaning groove 3, the sliding member 53 includes a screw 531 rotatably disposed in the groove 16 and a micro motor 532 fixedly mounted in the groove 16, the rotation axis of the screw 531 is parallel to the sliding direction of the cleaning frame 51, a projection 17 is fixedly connected to the cleaning frame 51, the projection 17 slides in the groove 16, the projection 17 is in threaded connection with the screw 531, and the output end of the micro motor 532 is fixedly connected with the screw 531. In other embodiments, the lead screw 531 may be replaced with a screw.

When the first net body 41 or the second net body 43 needs to be cleaned, in the process that the first net body 41 or the second net body 43 slides into the corresponding cleaning groove 3, the first net body 41 or the second net body 43 simultaneously moves into the corresponding cleaning frame 51, the micro motor 532 in the groove 16 is started, the micro motor 532 drives the corresponding screw rod 531 to rotate, the screw rod 531 drives the corresponding convex block 17 and the cleaning frame 51 to slide, and the bristles 52 on the cleaning frame 51 clean dust impurities on the first net body 41 or the second net body 43 in the sliding process, so that the dust impurities are prevented from being attached to the first net body 41 and the second net body 43, and the influence of the dust impurities on the air quality entering the basement is reduced.

Referring to fig. 3 and 4, a guide groove 18 is formed in the inner wall of the cleaning groove 3 opposite to the groove 16, a guide rod 9 is fixedly connected in the guide groove 18, the length direction of the guide rod 9 is parallel to the length direction of the screw 531, a guide block 19 is fixedly connected to one side of the cleaning frame 51 away from the projection 17, the guide block 19 slides in the guide groove 18, and the guide block 19 is slidably sleeved on the guide rod 9. The gliding in-process of clearance frame 51 drives guide block 19 and slides along guide bar 9, leads for the slip of clearance frame 51 through the cooperation of guide bar 9 with guide block 19, improves the slip effect of clearance frame 51.

Referring to fig. 2 and 4, a collecting tank 10 for collecting dust and impurities is disposed on an inner wall of the bottom end of the cleaning tank 3, and a longitudinal section of the collecting tank 10 is arc-shaped. The dust impurity that brush hair 52 brushed down drops to in the collecting vat 10 to centralized processing makes dust impurity and clearance frame 51 diapire have a certain distance simultaneously, makes the possibility that the dust rose in order to reduce clearance frame 51 slip in-process.

Referring to fig. 3 and 4, a mounting plate 7 is fixedly connected to one side of the first net body 41 far away from the connecting plate 42, the mounting plate 7 is fixedly connected to an output end of the electric push rod 6, two abutting pieces 8 which are close to each other are fixedly connected to a notch edge of the cleaning groove 3, in the embodiment, the abutting pieces 8 are elastic steel sheets, each abutting piece 8 comprises an abutting portion 81 and a moving-in portion 82, the abutting portions 81 and the moving-in portions 82 are integrally formed, the abutting portions 81 and the cleaning groove 3 are fixedly connected to each other, the abutting portions 81 are used for abutting against the connecting plate 42 or the mounting plate 7, the two abutting portions 81 are close to each other along an extending direction of the air channel 2, the two moving-in portions 82 are inclined towards directions far away from each other, both sides of the first net body 41 and the second net body 43 along a sliding direction are set to be arc surfaces, and the arc surfaces are convex towards directions far away from each other.

When the electric push rod 6 is started to push the first net body 41 to slide towards the direction close to the air channel 2, the first net body 41 pushes the second net body 43 to slide towards the direction far away from the electric push rod 6, so that the second net body 43 slides into the cleaning groove 3 far away from one side of the electric push rod 6 from the space between the two moving-in parts 82, the abutting part 81 far away from one side of the electric push rod 6 abuts against the connecting plate 42 after sliding to a required position, and the abutting part 81 near one side of the electric push rod 6 abuts against the mounting plate 7, so that the notch of the cleaning groove 3 is closed, the possibility that air in the air channel 2 enters the cleaning groove 3 is reduced, the influence on the air quality of the basement is reduced, and meanwhile, the damage of the abutting part 81 to the first net body 41 or the second net body 43 is reduced; after a certain time, the electric push rod 6 pulls the first net body 41 to slide towards the direction close to the electric push rod 6, the first net body 41 moves into the cleaning groove 3 from between the two moving-in parts 82 close to one side of the electric push rod 6, the abutting parts 81 close to one side of the electric push rod 6 abut against the connecting plate 42 after moving to the required position, the two abutting parts 81 far away from one side of the electric push rod 6 are close to each other, the possibility that air in the air channel 2 enters the cleaning groove 3 is reduced, and the cambered surface is set to facilitate relative sliding between the first net body 41 and the abutting parts 81 and between the second net body 43 and the abutting parts 81.

The implementation principle of the embodiment of the application is as follows:

when the second net body 43 needs to be cleaned, the electric push rod 6 is started to push the first net body 41 to slide towards the direction close to the air channel 2, the first net body 41 is moved into the air channel 2, the first net body 41 drives the second net body 43 to move into the cleaning groove 3 on the side far away from the electric push rod 6 from the space between the two moving-in parts 82 far away from the electric push rod 6, the first net body 41 filters wind passing through the air channel 2, the abutting part 81 on the side far away from the electric push rod 6 abuts against the connecting plate 42, the abutting part 81 on the side close to the electric push rod 6 abuts against the mounting plate 7, and therefore the notch of the cleaning groove 3 is closed; the micro motor 532 in the groove 16 on one side of the electric push rod 6 is started, the micro motor 532 drives the corresponding screw rod 531 to rotate, the screw rod 531 drives the corresponding convex block 17 and the cleaning frame 51 to slide, the brush bristles 52 on the cleaning frame 51 clean dust impurities on the second net body 43 in the sliding process, and the dust impurities on the second net body 43 are brushed down to the collecting tank 10, so that the influence of the dust impurities on the second net body 43 on the air quality of the basement is reduced.

After a certain time, a large amount of dust and impurities are attached to the first net body 41, the electric push rod 6 is started to pull the first net body 41 to slide towards the direction close to the electric push rod 6, the first net body 41 is moved into the corresponding cleaning groove 3 from the position between the two moving-in parts 82 close to one side of the electric push rod 6, and at the moment, the second net body 43 is positioned in the air channel 2 to filter the passing air; the micro motor 532 in the groove 16 on one side close to the electric push rod 6 is started, the micro motor 532 drives the corresponding screw rod 531 to rotate, the screw rod 531 drives the corresponding convex block 17 and the cleaning frame 51 to slide, so that the brush bristles 52 on the cleaning frame 51 clean the first net body 41, and the air quality entering the basement is reduced due to the influence of dust and impurities.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a people's air defense basement ventilation unit, includes wall body (1) and sets up air passage (2) on wall body (1), its characterized in that: the longitudinal section of air passageway (2) is the rectangle, it is provided with filter screen (4) that are used for filtered air to slide in air passageway (2), the extending direction of the slip direction perpendicular to air passageway (2) of filter screen (4), offer on the relative inner wall of air passageway (2) and be used for supplying filter screen (4) to slide in or the clearance groove (3) of roll-off, half of filter screen (4) are located clearance groove (3), and half is located air passageway (2), arbitrary be provided with in clearance groove (3) and be used for ordering about the gliding driving piece of filter screen (4), be provided with in clearance groove (3) and be used for carrying out the clearance subassembly (5) of clearing up half filter screen (4) that are located clearance groove (3).

2. The civil air defense basement ventilation device of claim 1, wherein: clearance subassembly (5) including slide setting clearance frame (51) in clearance groove (3), brush hair (52) of setting on clearance frame (51) and slide (53) of setting in clearance groove (3), slide (53) are used for ordering about clearance frame (51) and drive brush hair (52) and slide, the slip direction of clearance frame (51) is on a parallel with the slip direction of filter screen (4), clearance frame (51) are used for the slip cover to establish on filter screen (4), brush hair (52) are located one side that clearance frame (51) are close to filter screen (4), brush hair (52) are used for with filter screen (4) butt.

3. The civil air defense basement ventilation device of claim 2, wherein: slide (53) including rotate lead screw (531) that sets up in clearance groove (3) and set up micro motor (532) in clearance groove (3), the axis of rotation of lead screw (531) is on a parallel with the slip direction of clearance frame (51), clearance frame (51) threaded connection is on lead screw (531), micro motor (532) are used for ordering about lead screw (531) and rotate.

4. The civil air defense basement ventilation device of claim 1, wherein: the driving piece comprises an electric push rod (6) arranged in any cleaning groove (3), the extending direction of the electric push rod (6) is parallel to the sliding direction of the filter screen (4), and the filter screen (4) is connected with the output end of the electric push rod (6).

5. The civil air defense basement ventilation device of claim 4, wherein: the filter screen (4) comprises a first net body (41), a connecting plate (42) arranged on the first net body (41) and a second net body (43) arranged on one side, far away from the first net body (41), of the connecting plate (42), a mounting plate (7) is arranged on one side, far away from the connecting plate (42), of the first net body (41), the mounting plate (7) is connected with the output end of the electric push rod (6), two abutting pieces (8) close to each other are arranged on the edge of a notch of the cleaning groove (3), each abutting piece (8) comprises an abutting portion (81) and a moving-in portion (82), the abutting portions (81) and the moving-in portions (82) are integrally formed, the abutting portions (81) are connected with the edge of the cleaning groove (3), the abutting portions (81) are used for abutting against the connecting plate (42) or the mounting plate (7), and the abutting portions (81) are relatively close to each other along the extending direction of the air channel (2), both of the moving-in portions (82) are inclined in a direction of moving away from each other.

6. The civil air defense basement ventilation device of claim 5, wherein: the two sides of the first net body (41) and the second net body (43) along the sliding direction are both provided with cambered surfaces, and the cambered surfaces are outwards convex towards the direction away from each other.

7. The people's air defense basement ventilation unit of claim 3, characterized in that: the cleaning device is characterized in that a guide rod (9) is arranged in the cleaning groove (3), the length direction of the guide rod (9) is parallel to the length direction of the screw rod (531), and one side, far away from the screw rod (531), of the cleaning frame (51) is slidably sleeved on the guide rod (9).

8. The civil air defense basement ventilation device of claim 2, wherein: the sliding direction of the filter screen (4) is arranged along the horizontal direction, and a collecting tank (10) for collecting dust and impurities is arranged on the inner wall of the cleaning tank (3).

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