Filtering absorber special for civil air defense

Abstract

The utility model discloses a special filtration absorber for civil air defense, and particularly relates to the technical field of filters, which comprises a fixing plate fixedly mounted in an inner cavity of a box body, a communicating pipe slidably mounted on the fixing plate in a penetrating manner, an air inlet and an air outlet fixedly communicated with two sides of the box body respectively, and a filter screen fixedly mounted on one side, close to the air inlet, of the communicating pipe. A bearing plate is fixedly installed on the other side of the communicating pipe, a plurality of springs are fixedly installed between the bearing plate and the fixing plate, a supporting frame is fixedly installed at the position, close to the air outlet, of the inner cavity of the box body, a wind power mechanism is installed at the position, corresponding to the filter screen, of the supporting frame, and knocking mechanisms for intermittently knocking the bearing plate are arranged on the two sides of the supporting frame. The air flow is blown from the leeward side of the filter screen to the windward side of the filter screen through the wind power mechanism, so that dust on the windward side of the filter screen is blown out from the filter screen, dust stuffed into the windward side of the filter screen is blown out, the loss of the filter screen is small, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter technical field, concretely to a filter and absorption device special for civil air defense. BACKGROUND

[0002] Patent publication No. CN219376458U discloses a filter and absorption device special for civil air defense, which comprises an absorption device body, both ends of the absorption device body are open, and the open ends are fixedly connected with an air inlet pipe and an air outlet pipe respectively, the absorption device body is provided with a dust screen at one end facing the air inlet pipe, the middle part of the dust screen is fixedly installed with a rotating shaft, and the front and back walls of the absorption device body are fixedly connected with a support rod. In the utility model, the gas enters the absorption device body through the air inlet pipe and the dust screen, the dust in the gas is shielded by the dust screen, the fan blade is blown by the wind, thereby driving the whole dust screen to rotate, the rotation of the dust screen is scraped by the scraper, thereby scraping the dust on the surface of the dust screen into the dustproof shell, the dust on the surface of the dust screen is conveniently cleaned automatically, and the dustproof groove helps to blow the dust stuck on the surface of the dust screen into the dustproof shell, avoiding the influence of the dust on the air inlet effect due to the dust blocking the dust screen.

[0003] In the prior art, in order to prevent the filter screen from being blocked, a scraper is usually used to scrape the windward surface of the filter screen, but the scraper may scrape the dust into the gap of the filter screen when scraping the filter screen, and the filter screen is also easily scratched by the scraper, resulting in damage of the filter screen, and the filter efficiency of the filter screen gradually decreases due to long-term use of the scraper. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a filter and absorption device special for civil air defense.

[0005] The utility model solves the technical problem that long-term use of the scraper to scrape the filter screen may result in gradual decrease of the filter efficiency of the filter screen.

[0006] The utility model can be implemented by the following technical scheme: a fixed plate is fixedly installed in the inner cavity of a box body, a communication pipe is slidably installed through the fixed plate, an air inlet and an air outlet are fixedly communicated on the two sides of the box body, a filter screen is fixedly installed on one side of the communication pipe close to the air inlet, a pressure bearing plate is fixedly installed on the other side of the communication pipe, a plurality of springs are fixedly installed between the pressure bearing plate and the fixed plate, a support frame is fixedly installed at a position close to the air outlet in the inner cavity of the box body, a wind power mechanism is installed on the support frame at a position corresponding to the filter screen, and a knocking mechanism is arranged on the two sides of the support frame to intermittently knock the pressure bearing plate.

[0007] The further technical improvement of the utility model lies in: the wind power mechanism includes the impeller which is rotatably installed through the center position of the support frame, the bevel gear one is fixedly installed on one end of the impeller rotating shaft, the rotating rod is rotatably installed on the position of the box body close to the bevel gear one, the bevel gear two which is engaged with the bevel gear one is fixedly installed on the bottom end of the rotating rod.

[0008] Further, the airflow direction generated when the impeller rotates always points to the leeward surface of the filter screen.

[0009] Further, the knocking mechanism includes the rotating drum which is rotatably installed on the support frame, the undulating sliding groove is formed in the outer peripheral wall of the rotating drum, the sliding plate is slidably installed through the position close to the upper side of the rotating drum on the support frame, the sliding plate is slidably connected with the undulating sliding groove, and the end of the sliding plate away from the support frame is attached to the pressure bearing plate.

[0010] Further, the rotating shaft of the rotating drum and the rotating shaft of the impeller are driven through the belt wheel.

[0011] Further, the brush is fixedly installed on the position of the outer peripheral wall of the communicating pipe close to the filter screen.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The air flow is blown from the leeward surface of the filter screen to the windward surface of the filter screen through the wind power mechanism, so that the dust on the windward surface of the filter screen is blown out of the filter screen, the dust in the windward surface of the filter screen is blown out, the loss of the filter screen is small, and the service life is prolonged.

[0014] 2. The pressure bearing plate is intermittently knocked through the knocking mechanism, so that the filter screen oscillates, the dust on the surface of the filter screen is shaken off, and the dust removal efficiency of the filter screen is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to facilitate the understanding of those skilled in the art, the utility model will be further described below in combination with the drawings.

[0016] Fig. 1 It is the external structure schematic diagram of the utility model;

[0017] Fig. 2 It is the overall structure sectional view of the utility model;

[0018] Fig. 3 It is the structure connection schematic diagram of the communicating pipe and the fixed plate of the utility model.

[0019] In the figure: 1, box; 2, air inlet; 3, air outlet; 4, fixed plate; 5, communication pipe; 6, filter screen; 7, pressure plate; 8, spring; 9, support frame; 10, wind power mechanism; 101, impeller; 102, bevel gear one; 103, rotating rod; 104, bevel gear two; 11, knocking mechanism; 111, rotating drum; 112, undulating chute; 113, sliding plate. DETAILED DESCRIPTION

[0020] In order to further illustrate the technical means and effects adopted by the utility model to achieve the predetermined utility model purposes, the specific embodiments, structures, features and effects according to the utility model are described in detail as follows in combination with the drawings and preferred embodiments.

[0021] Please refer to Figs. 1-3 As shown in the figure, the embodiment provides a filter absorber special for civil air defense, which comprises a box 1, one side of the box 1 is fixedly connected with an air inlet 2, the other side of the box 1 is fixedly connected with an air outlet 3, a fixed plate 4 is fixedly installed in the inner cavity of the box 1, a communication pipe 5 is slidingly installed through the fixed plate 4, a filter screen 6 is fixedly installed on one side of the communication pipe 5 close to the air inlet 2, a pressure plate 7 is fixedly installed on the other side of the communication pipe 5, a brush is fixedly installed on the outer circumferential wall of the communication pipe 5 close to the filter screen 6, the brush is used to prevent dust-containing gas from overflowing from the gap between the communication pipe 5 and the fixed plate 4, and ensure that the dust-containing gas passes from the windward side to the leeward side of the filter screen 6, a plurality of springs 8 are fixedly installed between the pressure plate 7 and the fixed plate 4, a support frame 9 is fixedly installed at a position close to the air outlet 3 in the inner cavity of the box 1, a wind power mechanism 10 is installed on the support frame 9 at a position corresponding to the filter screen 6, and knocking mechanisms 11 are arranged on both sides of the support frame 9;

[0022] The wind power mechanism 10 comprises an impeller 101 which is rotatably installed through the center of the support frame 9, the airflow direction generated when the impeller 101 rotates always points to the leeward side of the filter screen 6, a bevel gear one 102 is fixedly installed on one end of the rotating shaft of the impeller 101, a rotating rod 103 is rotatably installed on the box 1 close to the bevel gear one 102, a driving motor is installed on the box 1 to drive the rotating rod 103 to rotate, and a bevel gear two 104 which is engaged with the bevel gear one 102 is fixedly installed on the bottom end of the rotating rod 103;

[0023] When the rotating rod 103 rotates, the bevel gear two 104 will be driven to rotate by the bevel gear one 102, so that the impeller 101 is driven to rotate by the bevel gear two 104, the rotating impeller 101 will blow the airflow to the leeward side of the filter screen 6, and then pass from the leeward side of the filter screen 6 to the windward side of the filter screen 6, so as to blow the dust on the windward side of the filter screen 6 away from the filter screen 6;

[0024] The knocking mechanism 11 comprises a rotating drum 111 rotatably installed on the support frame 9, the rotating shaft of the rotating drum 111 is driven by a belt wheel with the rotating shaft of the impeller 101, the outer circumferential wall of the rotating drum 111 is provided with a wavy sliding groove 112, a sliding plate 113 is slidingly installed on the support frame 9 and close to the upper position of the rotating drum 111, the sliding plate 113 is slidingly connected with the wavy sliding groove 112, and the end of the sliding plate 113 away from the support frame 9 is attached to the pressure bearing plate 7;

[0025] When the impeller 101 rotates, the rotating drum 111 is driven to rotate, the rotating drum 111 drives the sliding plate 113 to reciprocate forward and backward through the wavy sliding groove 112, so that the sliding plate 113 intermittently knocks the pressure bearing plate 7, the pressure bearing plate 7 intermittently extrudes the spring 8, so that the spring 8 drives the communicating pipe 5 to oscillate forward and backward on the fixed plate 4 through the pressure bearing plate 7, and the filter screen 6 is oscillated, so that dust on the filter screen 6 is shaken off, and the dust shaken off from the filter screen 6 is swept to a specified position by the brush on the communicating pipe 5 and is discharged, so that dust is prevented from accumulating at the bottom of the filter screen 6.

[0026] In use, the dust-containing waste gas enters the inside of the box body 1 through the air inlet 2, then passes through the windward side of the filter screen 6 to the leeward side of the filter screen 6, the dust in the dust-containing waste gas is blocked on the windward side of the filter screen 6, then the dust-containing waste gas after the dust is filtered is discharged from the air outlet 3, when the filter screen 6 is blocked, the gas is stopped from being conveyed into the box body 1, then the impeller 101 is driven to rotate, so that the impeller 101 blows the airflow to the leeward side of the filter screen 6, the airflow passing through the filter screen 6 blows the dust in the gap on the windward side of the filter screen 6, and when the impeller 101 rotates, the knocking mechanism 11 intermittently knocks the pressure bearing plate 7, so that the pressure bearing plate 7 intermittently extrudes the spring 8, so that the spring 8 oscillates and drives the communicating pipe 5 to oscillate forward and backward on the fixed plate 4 through the pressure bearing plate 7, and the communicating pipe 5 drives the filter screen 6 to oscillate forward and backward, so that the filter screen 6 shakes the dust on the windward side of the filter screen 6 to a certain extent, under the double actions of the oscillation of the filter screen 6 and the blowing of the airflow, the dust on the windward side of the filter screen 6 is effectively cleaned, when the dust on the windward side of the filter screen 6 is cleaned, the impeller 101 is stopped from rotating, and the gas can be conveyed into the box body 1 again, and the filter screen 6 is put into the dust removal process of the gas again.

[0027] The above merely describes preferred embodiments of the present application and is not intended to limit the present application in any form. Although the present application has been disclosed with preferred embodiments, it is not intended to limit the present application. Any person skilled in the art can make minor changes or modifications to the disclosed technical content to obtain equivalent embodiments with equivalent changes, as long as the changes or modifications do not deviate from the technical solution of the present application. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present application still belong to the scope of the technical solution of the present application.

Claims

1. A filter absorber for civil air defense, comprising a fixed plate (4) fixedly installed in the inner cavity of a box body (1), characterized in that: The fixed plate (4) is slidably installed with a communication pipe (5), the box (1) is fixed with an air inlet (2) and an air outlet (3) respectively, the fixed plate (4) is fixedly installed with a filter screen (6) near the air inlet (2), the fixed plate (4) is fixedly installed with a pressure plate (7) on the other side, the pressure plate (7) and the fixed plate (4) are fixedly installed with a plurality of springs (8), the box (1) is fixedly installed with a support frame (9) near the air outlet (3), the support frame (9) is installed with a wind power mechanism (10) corresponding to the position of the filter screen (6), and the support frame (9) is provided with a knocking mechanism (11) for intermittently knocking the pressure plate (7).

2. The filter absorber for civil defense according to claim 1, wherein The wind power mechanism (10) comprises a impeller (101) rotatably installed at the center of the support frame (9), a bevel gear one (102) is fixedly installed at one end of the rotating shaft of the impeller (101), a rotating rod (103) is rotatably installed on the box (1) near the bevel gear one (102), and a bevel gear two (104) engaged with the bevel gear one (102) is fixedly installed at the bottom end of the rotating rod (103).

3. The filter absorber for civil defense according to claim 2, wherein The airflow direction generated by the rotation of the impeller (101) always points to the leeward side of the filter screen (6).

4. The filter absorber for civil defense according to claim 2, wherein The knocking mechanism (11) comprises a rotating drum (111) rotatably installed on the support frame (9), a fluctuation chute (112) is formed in the outer wall of the rotating drum (111), a sliding plate (113) is slidably installed on the support frame (9) near the position above the rotating drum (111), the sliding plate (113) is slidably connected with the fluctuation chute (112), and the end of the sliding plate (113) away from the support frame (9) is attached to the pressure plate (7).

5. The filter absorber for civil defense according to claim 4, wherein The rotating shaft of the rotating drum (111) and the rotating shaft of the impeller (101) are driven by a belt wheel.

6. The filter absorber for civil defense according to claim 1, wherein The outer wall of the communication pipe (5) is fixedly installed with a brush near the filter screen (6).

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