Filtering and ventilating device for civil air defense engineering

Abstract

The utility model relates to the technical field of civil air defense engineering, in particular to a filtering and ventilating device for civil air defense engineering, which comprises a first rectangular box body, a second rectangular box body and a plurality of fixing rods, one side of the second rectangular box body is connected with an air outlet pipe, a tubular fan is arranged on the air outlet pipe, one side of the first rectangular box body is connected with an air inlet pipe, and the air inlet pipe is connected with an air outlet pipe. Two filtered gas pipeline assemblies are connected between the rectangular box body I and the rectangular box body II at intervals; the gas filtering pipeline assembly comprises a first fixing pipe, a telescopic pipe and a one-way ventilation pipe fitting which are concentrically arranged in sequence, a filtering net piece is arranged in an inner hole in the end, close to the telescopic pipe, of the one-way ventilation pipe fitting, a switch valve is arranged on the first fixing pipe, one end of the first fixing pipe is connected with the first rectangular box, and one end of the telescopic pipe is connected with the other end of the first fixing pipe. The other end of the telescopic pipe is connected with a movable ring, and the driving mechanism drives the telescopic pipe to stretch out and draw back. The ventilation device is reasonable in structure, ventilation work can be continuously carried out in the maintenance process, and the using effect of the ventilation device is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of civil air defense engineering, in particular to a filter ventilation device for civil air defense engineering. BACKGROUND

[0002] Civil air defense engineering refers to underground protective buildings built separately for protecting personnel and materials, air defense command and medical aid in wartime, and basements built in combination with ground buildings that can be used for air defense in wartime. This engineering is an important facility for preventing sudden enemy attacks, effectively shielding personnel and materials, and preserving war potential. During the implementation of civil air defense engineering, ventilation equipment is a crucial component because they ensure air circulation and air quality maintenance, thereby ensuring the survival environment of personnel in enclosed spaces.

[0003] With regard to the above-mentioned related technology, the inventor found that as the ventilation equipment operates for a long time in the civil air defense engineering, tiny particulate matter will gradually accumulate on the filter screen of the ventilation equipment over time, causing the mesh holes of the filter screen to be blocked, thereby reducing the ventilation capacity of the equipment. The filter screen of the ventilation equipment needs to be cleaned. During the cleaning process, the filter screen on the ventilation equipment needs to be disassembled. However, during the disassembly and cleaning of the filter screen, the ventilation equipment cannot continue to perform ventilation work, reducing the use effect of the ventilation equipment. UTILITY MODEL CONTENT

[0004] The utility model mainly solves the technical problem of providing a filter ventilation device for civil air defense engineering that can continuously perform ventilation work during maintenance, enhancing the use effect of the ventilation equipment.

[0005] To solve the above technical problems, one technical solution adopted by the utility model is to provide a filter ventilation device for civil air defense engineering, comprising: a rectangular box body one, a rectangular box body two, and a plurality of fixed rods connected between the two, the side of the rectangular box body two away from the rectangular box body one is connected with an air outlet pipe, a tubular fan is arranged on the air outlet pipe, the side of the rectangular box body one away from the rectangular box body two is connected with an air inlet pipe, two filter gas pipeline assemblies are connected between the rectangular box body one and the rectangular box body two.

[0006] The filter gas pipeline assembly comprises a fixed pipe one, an extension pipe, and a one-way air pipe piece arranged concentrically in sequence, a filter screen piece is arranged in the inner hole of one end of the one-way air pipe piece close to the extension pipe, an on-off valve is arranged on the fixed pipe one, and one end of the fixed pipe one is connected with the rectangular box body one, one end of the extension pipe is connected with the other end of the fixed pipe one, the other end of the extension pipe is connected with a moving ring, one end of the moving ring is connected with a flexible sealing ring concentrically, and the utility model further comprises a driving mechanism for driving the extension pipe to extend and retract.

[0007] By adopting the technical scheme, when in use, the tubular fan works to extract the gas in the rectangular box one and the rectangular box two, so that the inner cavities of the rectangular box one and the rectangular box two are in a negative pressure state, the outer end of the air inlet pipe extends to the external environment and inputs air, the switch valve on the left filter gas pipeline assembly is in an open state, the switch valve on the right filter gas pipeline assembly is in a closed state, air enters the rectangular box two from the fixed pipe one, the telescopic pipe and the one-way air pipe on the left filter gas pipeline assembly, the filter screen in the one-way air pipe filters out the particulate impurities in the air, the filtered air is input to the inside of the civil air defense project through the air outlet pipe for people to use, after the filter ventilation device is used for a long time, the filter screen is attached with more particulate impurities and affects the filtering air efficiency, the filter screen needs to be disassembled and cleaned, the switch valve on the right filter gas pipeline assembly is operated to be in an open state, air is filtered after passing through the right filter gas pipeline assembly and then enters the inner cavity of the rectangular box two, and then the air is input to the inside of the civil air defense project through the air outlet pipe for people to use, so that the filter ventilation device can continuously ventilate the inside of the civil air defense project, the use effect of the ventilation equipment is enhanced, next, the switch valve on the left filter gas pipeline assembly is operated to be in a closed state, the telescopic pipe is driven to contract by the driving mechanism, so that the flexible sealing ring on the moving ring is separated from the one-way air pipe, the filter screen in the one-way air pipe is taken out for cleaning, the above operation is repeated, one filter gas pipeline assembly is kept to connect the rectangular box one and the rectangular box two, and the use effect is enhanced and the maintenance convenience is improved.

[0008] In a preferred example, the one-way air pipe further comprises a one-way valve, two ends of the one-way valve are connected with a fixed pipe two and a fixed pipe three respectively, one end of the fixed pipe two away from the one-way valve is connected with the rectangular box two, and the inner hole of the fixed pipe two is provided with the filter screen.

[0009] By adopting the above technical scheme, the gas in the rectangular box two is prevented from flowing out through the fixed pipe two and the fixed pipe three by the use of the one-way valve, and the filter screen is radially limited by the fixed pipe two.

[0010] In a preferred example, the inner hole of the fixed pipe two is connected with an annular check ring, and the annular check ring is in abutting connection with the filter screen.

[0011] By adopting the above technical scheme, the filter screen is axially limited by the annular check ring, and the gas is prevented from driving the filter screen to move.

[0012] The utility model discloses a further configuration in a preferable example can be: drive mechanism includes two symmetry and connects the telescopic drive assembly of mobile ring outer circular surface, telescopic drive assembly includes electric push rod, and the extension end of electric push rod is connected with the connecting plate, and the connecting plate is fixedly connected with mobile ring.

[0013] Through adopting above-mentioned technical scheme, telescopic rod of electric push rod makes the action of extension or contraction, thereby drive flexible sealing ring on mobile ring to move towards or opposite unidirectional ventilation pipe.

[0014] The utility model discloses a further configuration in a preferable example can be: filter screen piece includes the inner hole of inner ring body and sets up in its inner chamber, and the inner hole of inner ring body is connected with handle, still includes a plurality of annular array setting's support rod, one end of support rod is connected with the inner wall of outer ring body, and the other end is connected with the outer circular surface of inner ring body, and the adjacent support rod is connected with filter screen body.

[0015] Through adopting above-mentioned technical scheme, support rod fixes and supports filter screen body, and the structural firmness of filter screen piece is strengthened, through the setting of handle, it is convenient for holding handle and taking out filter screen piece from the inner hole of unidirectional ventilation pipe and cleaning, and the convenience of operation is improved.

[0016] Summarized above, the utility model discloses at least one beneficial technical effect:

[0017] The gas in the rectangular box one is switched to the air input in the rectangular box two through two filter gas pipeline assemblies, that is, one filter gas pipeline assembly communicates the rectangular box one with the rectangular box two, and the filter screen piece on another filter gas pipeline assembly can be cleaned, so that the filter ventilation device continuously passes clean air to the civil air defense engineering, and the use effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the following will briefly introduce the drawing needed to be used in the embodiment description, and obviously, the drawing in the following description is only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating labor, wherein:

[0019] Figure 1 It is a structure schematic view of a preferable embodiment of the filter ventilation device for civil air defense engineering of the utility model.

[0020] Figure 2 It is Figure 1 The structure schematic view of filter screen piece in it.

[0021] Figure 3 It is Figure 1Structure schematic view of connection between telescopic drive assembly and moving ring.

[0022] Figure 4 is Figure 1 Structure schematic view of connection between fixed pipe three, annular check ring and filter screen.

[0023] In the figure: 1, rectangular box one; 2, rectangular box two; 3, fixed rod; 4, air outlet pipe; 5, tubular fan; 6, air inlet pipe; 70, filter gas pipeline assembly; 8, annular check ring;

[0024] 71, fixed pipe one; 72, telescopic pipe; 73, one-way air pipe; 74, filter screen; 75, open

[0025] valve; 76, moving ring; 77, flexible sealing ring; 78, telescopic drive assembly;

[0026] 731, one-way valve; 732, fixed pipe two; 733, fixed pipe three;

[0027] 741, outer ring body; 742, inner ring body; 743, handle; 744, filter screen body; 745, support rod; 781, electric push rod; 782, connecting plate. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present application will be described below with reference to the drawings, and it should be understood that the preferred embodiments described herein are merely intended to illustrate and explain the present application, and are not intended to limit the present application.

[0029] It should be noted that these drawings are simplified schematic views, and only illustrate the basic structure of the present application in a schematic manner, and thus only show the components related to the present application.

[0030] Referring to Figures 1 to 4 The present application discloses a filter ventilation device for civil air defense engineering, which comprises a rectangular box one 1, a rectangular box two 2, and a plurality of fixed rods 3 connected in a rectangular array between the two, an air outlet pipe 4 connected to one side of the rectangular box two 2 away from the rectangular box one 1, a tubular fan 5 arranged on the air outlet pipe 4, an air inlet pipe 6 connected to one side of the rectangular box one 1 away from the rectangular box two 2, and two filter gas pipeline assemblies 70 connected in a spaced manner between the rectangular box one 1 and the rectangular box two 2.

[0031] The gas filtration pipeline assembly 70 includes a fixed pipe 71, a telescopic pipe 72, and a one-way ventilation pipe 73 arranged concentrically in sequence. The one-way ventilation pipe 73 has a filter screen 74 in its inner hole near the telescopic pipe 72. The fixed pipe 71 is equipped with a switch valve 75 and one end is connected to a rectangular box 1. One end of the telescopic pipe 72 is connected to the other end of the fixed pipe 71. The other end of the telescopic pipe 72 is connected to a moving ring 76. One end of the moving ring 76 is concentrically connected to a flexible sealing ring 77. The assembly also includes a drive mechanism for driving the telescopic pipe 72 to extend and retract.

[0032] The one-way ventilation pipe 73 includes a one-way valve 731. The two ends of the one-way valve 731 are respectively connected to a fixed pipe 732 and a fixed pipe 733. The end of the fixed pipe 732 away from the one-way valve 731 is connected to the rectangular box 2. The inner hole of the fixed pipe 732 is provided with the filter screen 74. The one-way valve 731 is adapted to prevent the gas in the fixed pipe 732 from flowing to the fixed pipe 733. By using the one-way valve 731, the gas in the rectangular box 2 is prevented from flowing out through the fixed pipe 732 and the fixed pipe 733. The fixed pipe 732 radially limits the filter screen 74.

[0033] An annular retaining ring 8 is connected to the inner hole of the fixed tube 732. The annular retaining ring 8 is in contact with the filter screen 74. The annular retaining ring 8 axially limits the filter screen 74 and prevents the gas from driving the filter screen 74 to move.

[0034] The drive mechanism includes two telescopic drive assemblies 78 symmetrically connected to the outer surface of the moving ring 76. Each telescopic drive assembly 78 includes an electric push rod 781. The extended end of the electric push rod 781 is connected to a connecting plate 782, which is fixedly connected to the moving ring 76. The telescopic rod of the electric push rod 781 extends or retracts, thereby driving the flexible sealing ring 77 on the moving ring 76 to move relative to the one-way ventilation pipe 73 in opposite directions.

[0035] The filter element 74 includes an outer ring body 741 and an inner ring body 742 disposed in its inner cavity. The inner hole of the inner ring body 742 is connected to a handle 743. It also includes a plurality of support rods 745 arranged in a ring array. One end of the support rod 745 is connected to the inner wall of the outer ring body 741, and the other end is connected to the outer circular surface of the inner ring body 742. The filter body 744 is connected between adjacent support rods 745. The support rods 745 provide fixed support for the filter body 744, which enhances the structural strength of the filter element 74. The handle 743 makes it easy to hold the handle 743 and take out the filter element 74 from the inner hole of the one-way vent pipe 73 for cleaning, which improves the convenience of operation.

[0036] The implementation principle of the embodiment is that: in use, the tubular fan 5 works to extract the gas in the rectangular box one 1 and the rectangular box two 2, so that the inner cavities of the rectangular box one 1 and the rectangular box two 2 are in a negative pressure state, the outer end of the air inlet pipe 6 extends to the external environment and inputs air, the switch valve 75 on the left filter gas pipeline assembly 70 is in an open state, the switch valve 75 on the right filter gas pipeline assembly 70 is in a closed state, air enters the rectangular box two 2 from the fixed pipe one 71, the telescopic pipe 72 and the one-way air pipe 73 on the left filter gas pipeline assembly 70, the filter screen 74 in the one-way air pipe 73 filters out the particulate impurities in the air, the filtered air is input to the inside of the civil air defense project through the air outlet pipe 4 for people to use, after the filter ventilation device is used for a long time, the filter screen 74 is attached with more particulate impurities and affects the filtering air efficiency, and it needs to be disassembled and cleaned, the switch valve 75 on the right filter gas pipeline assembly 70 is operated to be in an open state, air is filtered after passing through the right filter gas pipeline assembly 70 and enters the inner cavity of the rectangular box two 2, and then the air is input to the inside of the civil air defense project through the air outlet pipe 4 for people to use, so that the filter ventilation device can continuously ventilate the inside of the civil air defense project, the use effect of the ventilation equipment is enhanced, next, the switch valve 75 on the left filter gas pipeline assembly 70 is operated to be in a closed state, the driving mechanism works to drive the telescopic pipe 72 to shrink, so that the flexible sealing ring 77 on the moving ring 76 is separated from the one-way air pipe 73, the filter screen 74 in the one-way air pipe 73 is taken out for cleaning, the above-mentioned operation is repeated, one filter gas pipeline assembly 70 is kept to connect the rectangular box one 1 and the rectangular box two 2, the use effect is enhanced, and the maintenance convenience is improved.

[0037] The above-mentioned is only the embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process transformation according to the utility model specification content or direct or indirect application in other related technical fields is also included in the patent protection range of the utility model.

Claims

1. A filtering ventilation device for a civil defense shelter, characterized in that, Include: Rectangular box one (1), rectangular box two (2) and rectangular array of several fixed rod (3) connected between them, the rectangular box two (2) is connected with the air outlet pipe (4) away from the side of the rectangular box one (1), the air outlet pipe (4) is equipped with tubular fan (5), the rectangular box one (1) is connected with the air inlet pipe (6) away from the side of the rectangular box two (2), the rectangular box one (1) and the rectangular box two (2) are spaced apart and connected with two filter gas pipeline components (70); The filter gas pipeline component (70) includes fixed tube one (71), telescopic tube (72) and one-way ventilation pipe (73) arranged concentrically, the one-way ventilation pipe (73) is provided with filter screen (74) in the inner hole of one end close to the telescopic tube (72), the fixed tube one (71) is provided with an on-off valve (75) and one end is connected with the rectangular box one (1), one end of the telescopic tube (72) is connected with the other end of the fixed tube one (71), the other end of the telescopic tube (72) is connected with a moving ring (76), one end of the moving ring (76) is connected with a flexible sealing ring (77) concentrically, and a driving mechanism for driving the telescopic tube (72) to stretch out and draw back is further included.

2. The filtering ventilation device for civil defense projects according to claim 1, characterized in that, The one-way ventilation pipe (73) includes a one-way valve (731), the two ends of the one-way valve (731) are connected with a fixed tube two (732) and a fixed tube three (733), the one end of the fixed tube two (732) away from the one-way valve (731) is connected with the rectangular box two (2), the inner hole of the fixed tube two (732) is provided with the filter screen (74), and the one-way valve (731) is adapted to prevent the gas in the fixed tube two (732) from flowing to the fixed tube three (733).

3. The filtering ventilation device for civil defense projects according to claim 2, characterized in that, The inner hole of the fixed tube two (732) is connected with an annular check ring (8), and the annular check ring (8) is connected with the filter screen (74) in abutment.

4. The filtering ventilation device for civil defense projects according to claim 1, characterized in that, The driving mechanism includes two telescopic drive assemblies (78) connected symmetrically on the outer circular surface of the moving ring (76), the telescopic drive assembly (78) includes an electric push rod (781), the extending end of the electric push rod (781) is connected with a connecting plate (782), and the connecting plate (782) is fixedly connected with the moving ring (76).

5. The filtering ventilation device for civil defense projects according to claim 1, characterized in that, The filter screen (74) includes an outer ring body (741) and an inner ring body (742) arranged in the inner cavity thereof, the inner hole of the inner ring body (742) is connected with a handle (743), and a plurality of annular arrayed support rods (745) are further included, one end of the support rod (745) is connected with the inner wall of the outer ring body (741), the other end is connected with the outer circular surface of the inner ring body (742), and the filter screen body (744) is connected between adjacent support rods (745).

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