An air exchange and filtration device for subway civil air defense projects

Abstract

The present invention discloses a ventilation and filtration device for subway civil air defense projects, comprising: an air conditioning unit, which is installed on the top of the subway civil air defense basement and is in communication with the external air; a filtration mechanism, which is installed in the subway civil air defense basement and is communicated with the air conditioning unit through an air inlet pipe; the filtration mechanism includes: a mounting frame, which is installed on the ground of the subway civil air defense basement; a fixed cylinder member, which is communicated with the air inlet pipe, and the upper end surface of the fixed cylinder member is inclined; a square filter cover, which is inclined and sealedly installed at the upper end of the fixed cylinder member by a fastener that laterally approaches the square filter cover. In the present invention, when replacing the square filter cover, there is no need to enter the ventilation duct, reducing the disassembly steps. Only need to synchronously tighten or loosen the first bolt and the second bolt, reducing the disassembly difficulty.

Description

Technical Field

[0001] The present invention belongs to the technical field of filters, and relates to a ventilation filtering device for subway civil air defense projects. Background Art

[0002] Civil air defense projects are an important part of subway construction. Subways are mainly used for traffic operation during peacetime, and play an important role as a lifeline for personnel transfer and important material transportation during wartime. Once needed, the partition protection doors installed between stations in the subway are closed, and after the ventilation device is turned on, a subway station becomes an isolated and separately sealed safe shelter, which can effectively resist various attacks including nuclear weapons and urban secondary disasters.

[0003] Since the air filter cover in the ventilation system has a certain service life, it needs to be cleaned or replaced after long-term use. Generally, the air filter cover grid is fixed in the ventilation duct, and the operator needs to enter the ventilation duct to disassemble the air filter cover grid during cleaning or disassembly, and the operation steps are relatively cumbersome. To solve the above problems, the present invention proposes a ventilation filtering device for subway civil air defense projects. Summary of the Invention

[0004] To solve the problems in the background art, the present invention proposes a ventilation filtering device for subway civil air defense projects, which has the characteristic of good sealing performance by laterally fixing the filtering mechanism.

[0005] To achieve the above object, the technical solution adopted by the present invention is as follows: A ventilation filtering device for subway civil air defense projects, comprising:

[0006] An air-conditioning unit, which is installed on the top of the subway civil air defense basement and is communicated with the external air;

[0007] A filtering mechanism, which is installed in the subway civil air defense basement and is communicated with the air-conditioning unit through an air inlet pipe; The filtering mechanism includes:

[0008] A mounting rack, which is installed on the ground of the subway civil air defense basement;

[0009] A fixed cylinder member, which is communicated with the air inlet pipe, and the upper end surface of the fixed cylinder member is inclined;

[0010] A square filter cover, which is inclined and sealedly installed on the upper end of the fixed cylinder member by a fastener laterally pressing against the square filter cover.

[0011] Further, the fixed cylinder member includes a support pipe and a square corrugated pipe; the bottom of the support pipe is fixed on the ground of the subway civil air defense basement and is communicated with the air inlet pipe;

[0012] The lower end of the square corrugated pipe is hermetically connected to the support pipe; a square ring is installed at the upper end of the corrugated pipe and is adapted to the square filter cover.

[0013] Further, a receiving ring is installed at the lower end of the square filter cover, and the receiving ring is adapted to the square ring.

[0014] Further, a sealing ring is hermetically installed between the square ring and the receiving ring.

[0015] Further, an installation cavity is provided on the mounting frame; both the square ring and the receiving ring are located in the installation cavity and are fixed by fasteners.

[0016] Further, a first boss is fixed at the upper end position of the left inner wall of the installation cavity; a second boss is fixed at the lower end position of the right inner wall of the installation cavity; the fasteners include a first bolt and a second bolt that are horizontally threadedly connected to the mounting frame; the first bolt is located above the second boss, and the second bolt is located below the first boss; the first bolt cooperates with the second boss, and the second bolt cooperates with the first boss.

[0017] Further, a plurality of slot holes are provided on the upper end surface of the side wall of the mounting frame, springs are fixedly arranged in the slot holes, the other ends of the springs are fixedly connected to the first boss, and limiting plates are fixedly arranged on both sides of the first boss; a plurality of slot holes are provided on the lower end surface of the side wall of the mounting frame, springs are fixedly arranged in the slot holes, the other ends of the springs are fixedly connected to the second boss, and limiting plates are fixedly arranged on both sides of the second boss; a plurality of sinking grooves are provided on the upper end surface of the side wall of the mounting frame, and the limiting plates extend into the sinking grooves and are in limit sliding fit with the mounting frame;

[0018] The fasteners include a first bolt and a second bolt that are horizontally threadedly connected to the mounting frame; the first bolt is located above the second boss, and the second bolt is located below the first boss; the first bolt cooperates with the second boss, and the second bolt cooperates with the first boss.

[0019] Further, a plurality of filter holes are provided on the square filter cover, and an activated carbon filter cotton is installed inside the square filter cover.

[0020] Further, the distance between the second boss and the open end of the installation cavity is relatively farther than the distance between the first boss and the open end of the installation cavity, the second boss is inclined, and the inclination direction of the second boss faces the first boss.

[0021] Further, the air-conditioning unit includes two air conditioners, the two air conditioners are respectively installed at the left and right ends of the top of the subway civil air defense basement, and a filter screen is installed on the air conditioner.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. In the present invention, when replacing the square filter cover, there is no need to enter the ventilation duct, which reduces the disassembly steps. It is only necessary to tighten or loosen the first bolt and the second bolt synchronously, which reduces the difficulty of disassembly.

[0024] 2. The sealing ring installed between the square filter cover and the square bellows can improve the sealing degree; and prevent the air sent into the square filter cover by the air conditioning unit from being directly blown into the subway air defense basement.

[0025] 3. The activated carbon filter cotton arranged in the square filter cover further absorbs the pollutants in the air sent into the square filter cover by the air-conditioning unit, and sends the clean air into the subway air defense basement through a number of filter holes, thereby improving the cleanliness of the subway air defense basement. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the present invention;

[0027] Figure 2 It is a structural schematic diagram of the filtering mechanism in the present invention;

[0028] Figure 3 is a cross-sectional view of the filter mechanism of the present invention;

[0029] Figure 4 is another cross-sectional view of the filter mechanism of the present invention;

[0030] Figure 5 yes Figure 4 Enlarged view of part A in the middle;

[0031] Figure 6 is a structural view of the second boss in Example 2;

[0032] Figure 7 is a cross-sectional view of the filtering mechanism in Example 3;

[0033] Figure 8 Yes Yes Figure 7 Enlarged view of middle part B;

[0034] Figure 9 It is a structural schematic diagram of the ventilation and filtering device for subway civil air defense engineering described in Example 3;

[0035] Figure 10 It is a structural schematic diagram of the first boss or the second boss and the limiting plate in Example 3.

[0036] In the figure: 1. Subway air-raid shelter; 2. Air conditioner; 3. Filter; 4. Inlet pipe; 5. Square filter cover; 6. First bolt; 7. Square bellows; 8. Support pipe; 9. Mounting frame; 10. Second bolt; 11. Square ring; 12. First boss; 13. Receiver ring; 14. Sealing ring; 15. Second boss; 16. Spring; 17 Limiting plate. Detailed implementation mode

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] Embodiment 1

[0039] As Figures 1 - 5 shown, the technical solution adopted by the present invention is as follows: A ventilation and filtration device for subway civil air defense projects includes an air-conditioning unit and a filtration mechanism; the air-conditioning unit includes two air conditioners 2, which are respectively installed on the top of the subway civil air defense basement 1 and are communicated with the external air; both air conditioners 2 are communicated with the filtration mechanism through an air inlet pipe 4; the filtration mechanism is installed in the subway civil air defense basement 1; the air conditioner 2 adjusts the temperature and humidity of the air and drives the external air, so that the air enters the filtration mechanism through the air inlet pipe 4, and the filtration mechanism filters the air and discharges the filtered air into the subway civil air defense basement 1.

[0040] In this embodiment, the two air conditioners 2 are respectively located at the left and right ends of the top of the subway civil air defense basement 1; a filter net 3 is also installed at the air inlet end of the air conditioner 2, and the filter net 3 can preliminarily filter the air.

[0041] In this embodiment, the filtration mechanism includes a mounting frame 9, a fixed cylinder part, and a square filter cover 5.

[0042] The mounting frame 9 is a square bracket and has a mounting cavity; the mounting frame 9 is fixed to the ground of the subway civil air defense basement 1 by bolts; the square filter cover 5 is fixed to the fixed cylinder part by fasteners and is located in the mounting cavity.

[0043] The fixed cylinder part includes a support pipe 8 and a square corrugated pipe 7; the support pipe 8 is fixed to the ground of the subway civil air defense basement 1 and is located below the mounting cavity; one end of the air inlet pipe 4 extending into the subway civil air defense basement 1 is communicated with the support pipe 8; the upper end surface of the support pipe 8 is an inclined surface, the bottom of the square corrugated pipe 7 is installed on the upper end surface of the support pipe 8, the square corrugated pipe 7 is communicated with the support pipe 8, and the square corrugated pipe 7 is integrally inclined to facilitate the inclined installation of the square filter cover 5.

[0044] A square ring 11 is welded to the upper end of the square corrugated pipe 7, and a receiving ring 13 is welded to the bottom of the square filter cover 5; the receiving ring 13 is adapted to the square ring 11; in order to improve the sealing performance of the connection between the square filter cover 5 and the square corrugated pipe 7, a sealing ring 14 is installed between the receiving ring 13 and the square ring 11.

[0045] In this embodiment, a first boss 12 is welded to the upper end of the left inner wall of the installation cavity; a second boss 15 is welded to the lower end of the right inner wall of the installation cavity; the fasteners include a first bolt 6 and a second bolt 10; the first bolt 6 cooperates with the second boss 15, and the second bolt 10 cooperates with the first boss 12, so as to fix the square filter cover 5 on the square corrugated pipe 7.

[0046] Specifically, the first bolt 6 is horizontally threaded through the right side wall of the mounting bracket 9 and is located above the second boss 15; the second bolt 10 is horizontally threaded through the left side wall of the mounting bracket 9 and is located below the first boss 12. The first bolt 6 cooperates with the second boss 15, the right bottom surface of the square ring 11 abuts against the second boss 15, and the threaded surface of the first bolt 6 abuts against the right top surface of the receiving ring 13; the second bolt 10 cooperates with the first boss 12, the left bottom surface of the square ring 11 abuts against the threaded surface of the second bolt 10, and the top surface of the receiving ring 13 abuts against the bottom surface of the first boss 12. When the first bolt 6 and the second bolt 10 are synchronously screwed in, the first bolt 6 squeezes the receiving ring 13, so that the receiving ring 13 squeezes the square ring 11 and moves toward the second boss 15; the second bolt 10 squeezes the square ring 11, so that the square ring 11 squeezes the receiving ring 13 and moves toward the first boss 12.

[0047] In this embodiment, there are two first bolts 6 and two second bolts 10; the two first bolts 6 are arranged in the front-back direction along the right side wall of the mounting bracket 9, and the two second bolts 10 are arranged in the front-back direction along the left side wall of the mounting bracket 9.

[0048] It should be added that since the square corrugated pipe 7 has shrinkability, when the square filter cover 5 is fixed on the square corrugated pipe 7 by the first bolt 6 and the second bolt 10, the square filter cover 5 can be tightly connected to the square corrugated pipe 7.

[0049] In this embodiment, a plurality of filter holes are formed in the square filter cover 5, and an activated carbon filter cotton is further installed in the square filter cover 5, and the activated carbon filter cotton plugs the plurality of filter holes; the activated carbon filter cotton further adsorbs pollutants in the air sent into the square filter cover 5 by the air conditioner unit and sends the clean air into the subway civil air defense basement 1 through the plurality of filter holes, thereby improving the cleanliness of the subway civil air defense basement 1.

[0050] When the square filter cover 5 needs to be replaced, the first bolt 6 and the second bolt 10 are synchronously screwed out. At this time, the square filter cover 5 is separated from the square corrugated pipe 7; the square filter cover 5 is removed and can be cleaned.

[0051] After cleaning, place the sealing ring 14 obliquely on the square ring 11, and place the square filter cover 5 on the sealing ring 14; then tighten the first bolt 6 and the second bolt 10 synchronously. The first bolt 6 presses the bearing ring 13, so that the bearing ring 13 presses the square ring 11 and moves towards the second boss 15; the second bolt 10 presses the square ring 11, so that the square ring 11 presses the bearing ring 13 and moves towards the first boss 12; finally, the square filter cover 5 is fastened on the square bellows 7 and sealed by the sealing ring 14.

[0052] By the inclined setting of the square filter cover 5, the outlet direction of the cleaning air can be adjusted, the diffusion range of the cleaning air in the subway civil air defense basement 1 is expanded, and the diffusion speed of the cleaning air is increased.

[0053] Embodiment 2

[0054] This embodiment is a further supplement to Embodiment 1.

[0055] The distance between the second boss 15 and the open end of the installation cavity is relatively far from the distance between the first boss 12 and the open end of the installation cavity. In order to facilitate the placement of the square ring 11 and make it inclined, that is, one end of the square ring 11 abuts against the first boss 12 through the bearing ring 13, the second boss 15 can be designed to be in an inclined state, and the inclined direction of the second boss 15 is set towards the second boss 12. When the bearing ring 13 on the square filter cover 5 acts on the second boss 15 through the square ring 11, due to the inclined setting of the second boss 15 and the surface contact between the square ring 11 and the second boss 15, the square ring 11 adapts to the inclined state of the second boss 15, achieving the purpose that one end of the square ring 11 abuts against the first boss 12 through the bearing ring 13.

[0056] Embodiment 3

[0057] This embodiment is a replacement of some solutions in Embodiment 1, and the different technical contents between the two are as follows:

[0058] When the ventilation and filtration device is placed around the subway civil air defense basement 1, the square filter cover 5 needs to be inclined to further improve the diffusion range of the cleaning air and the diffusion speed.

[0059] A number of slot holes are provided on the upper end surface of the side wall of the mounting frame 9, springs 16 are fixedly arranged in the slot holes, the other ends of the springs 16 are fixedly connected with the first boss 12, and limiting plates 17 are fixedly arranged on both sides of the first boss 12; a number of slot holes are provided on the lower end surface of the side wall of the mounting frame 9, springs 16 are fixedly arranged in the slot holes, the other ends of the springs 16 are fixedly connected with the second boss 15, and limiting plates 17 are fixedly arranged on both sides of the second boss 15; a number of sunk grooves are provided on the upper end surface of the side wall of the mounting frame 9, and the limiting plates 17 extend into the sunk grooves and are in limit sliding fit with the mounting frame 9;

[0060] The fastener includes a first bolt 6 and a second bolt 10 that are horizontally threadedly connected to the mounting bracket 9; the first bolt 6 is located above the second boss 15, and the second bolt 10 is located below the first boss 12; the first bolt 6 cooperates with the second boss 15, and the second bolt 10 cooperates with the first boss 12.

[0061] The sealing ring 14 is placed obliquely on the square ring 11, and the square filter cover 5 is placed on the sealing ring 14; then the first bolt 6 and the second bolt 10 are synchronously tightened. The first bolt 6 presses against the bearing ring 13, causing the bearing ring 13 to press against the square ring 11 and move in the direction of the second boss 15; the second bolt 10 presses against the square ring 11, causing the square ring 11 to press against the bearing ring 13 and move in the direction of the first boss 12; finally, the square filter cover 5 is fastened to the square bellows 7 and sealed through the sealing ring 14.

[0062] Since the first boss 12 and the second boss 15 are elastically connected to the mounting bracket 9. By the action of the first bolt 6 and the second bolt 10 on the square filter cover 5, the inclination degree of the square filter cover 5 can be adjusted. Screwing the first bolt 6 and the second bolt 10 towards the square filter cover 5 can increase the inclination degree without affecting the sealing degree between the square filter cover 5 and the square bellows 7.

[0063] By adjusting the inclination degree of the square filter cover 5, the outlet direction of the clean air can be adjusted, further expanding the diffusion range of the clean air in the subway civil air defense basement 1 and increasing the diffusion speed of the clean air.

[0064] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An air exchange and filtration device for subway civil air defense projects, characterized in that, Comprising: An air-conditioning unit, which is installed on the top of the subway civil air defense basement (1) and is communicated with the external air; A filtering mechanism, which is installed in the subway civil air defense basement (1) and is communicated with the air-conditioning unit through an air inlet pipe (4); the filtering mechanism includes: a mounting frame (9), which is installed on the ground of the subway civil air defense basement (1); A fixed cylinder member, which is communicated with the air inlet pipe (4), and the upper end surface of the fixed cylinder member is inclined; a square filter cover (5), which is inclined and sealedly installed on the upper end of the fixed cylinder member by a fastener laterally approaching the square filter cover (5); The fixed cylinder member includes a support pipe (8) and a square corrugated pipe (7); the bottom of the support pipe (8) is fixed on the ground of the subway civil air defense basement (1) and is communicated with the air inlet pipe (4); the lower end of the square corrugated pipe (7) is sealedly communicated with the support pipe (8); a square ring (11) is installed at the upper end of the corrugated pipe and is adapted to the square filter cover (5); A receiving ring (13) is installed at the lower end of the square filter cover (5), and the receiving ring (13) is adapted to the square ring (11); An installation cavity is formed on the side wall of the mounting frame (9); the square ring (11) and the receiving ring (13) are both located in the installation cavity and are fixed by fasteners; A first boss (12) is fixed at the upper end position of the left inner wall of the installation cavity; a second boss (15) is fixed at the lower end position of the right inner wall of the installation cavity; the fasteners include a first bolt (6) and a second bolt (10) horizontally threadedly connected to the mounting frame (9); the first bolt (6) is located above the second boss (15), and the second bolt (10) is located below the first boss (12); the first bolt (6) cooperates with the second boss (15), and the second bolt (10) cooperates with the first boss (12).

2. The air change and filtration device for subway civil air defense project according to claim 1, wherein: A sealing ring (14) is sealedly installed between the square ring (11) and the receiving ring (13).

3. The air exchange and filtration device for subway civil air defense project according to claim 1, characterized in that: A plurality of slot holes are provided on the upper end surface of the side wall of the mounting frame (9), a spring (16) is fixedly arranged in the slot holes, the other end of the spring (16) is fixedly connected with the first boss (12), and limiting plates (17) are fixedly arranged on both sides of the first boss (12); a plurality of slot holes are provided on the lower end surface of the side wall of the mounting frame (9), a spring (16) is fixedly arranged in the slot holes, the other end of the spring (16) is fixedly connected with the second boss (15), and limiting plates (17) are fixedly arranged on both sides of the second boss (15); a plurality of sinking grooves are provided on the upper end surface of the side wall of the mounting frame (9), and the limiting plates (17) extend into the sinking grooves and are in limit sliding fit with the mounting frame (9); the fasteners include a first bolt (6) and a second bolt (10) horizontally threadedly connected to the mounting frame (9); the first bolt (6) is located above the second boss (15), and the second bolt (10) is located below the first boss (12); the first bolt (6) cooperates with the second boss (15), and the second bolt (10) cooperates with the first boss (12).

4. The air exchange and filtration device for subway civil air defense project according to claim 1, characterized in that: A plurality of filter holes are formed in the square filter cover (5), and an activated carbon filter cotton is installed in the square filter cover (5).

5. The air exchange and filtration device for subway civil air defense project according to claim 1, wherein: The distance between the second boss (15) and the open end of the installation cavity is farther than the distance between the first boss (12) and the open end of the installation cavity. The second boss (15) is inclined, and the inclination direction of the second boss (15) faces the first boss (12).

6. The air exchange and filtration device for subway civil air defense project according to claim 1, wherein: The air-conditioning unit includes two air conditioners (2), and the two air conditioners (2) are respectively installed at the left and right ends of the top of the subway civil air defense basement (1). A filter net (3) is installed on the air conditioner (2).

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