Police anti-riot radial efficient low-resistance canister

Abstract

The invention relates to a product matched with a police gas mask for special tasks such as special duty and law enforcement, group disturbance and violence and terrorism events and high-risk occasions, in particular to a police anti-riot radial efficient low-resistance canister. The invention relates to a dust filter which comprises a tank body, a filter body, dust filter cloth a, a middle air passage, a base, an upper fixing plate, an annular radial smoke filter layer, a filter layer partition plate, dust filter cloth b and a lower fixing plate, during air suction, air enters from an air inlet hole of the base, is upwards and annularly distributed on the inner wall of the tank body through an interlayer formed by the lower fixing plate and the base, and then radially enters through the annular radial smoke filter layer; after smoke and dust particles in the gas are filtered out, the gas enters the filtering body to filter out toxic and harmful gas, and then the gas enters the mask through the middle gas channel. The structure is compact, wearing is comfortable, and the canister is convenient to store and use. The problems that in the prior art, no special comprehensive gas defense filter tank for police exists, and only an industrial comprehensive gas filter tank is used, so that the service time is short, and the protection effect is poor are solved.

Description

Technical Field

[0001] The present invention relates to a product for matching police gas masks used in special tasks and high-risk occasions such as special duty law enforcement, group riots, violent terrorist incidents, and more particularly to a police riot-proof radial high-efficiency low-resistance gas filter canister. Background Art

[0002] Police gas masks are generally used in conjunction with police riot helmets. The interfaces on police gas masks can be used to install gas filter canisters that meet the needs of different scenarios. They are mainly used in environments with toxic and harmful substances, tiny particles, etc.

[0003] When the police are dealing with violent terrorist incidents, when the actual scene only has smoke-like riot irritants, they can choose anti-particle filters, which can filter CS, CN and OC pepper sprays. The smoke filter layer inside the filter is made of HEPA material to ensure effective protection against dust, fog, smoke, biological agents (bacteria, viruses, fungal spores, etc.) and radioactive dust.

[0004] If there are other toxic gas threats in the actual scenario, a dust and toxic gas comprehensive protection canister should be used. In addition to the functions of preventing particulate matter and filtering smoke, the filter canister is also equipped with multifunctional activated carbon, which can efficiently and long-term filter various toxic and harmful gases such as inorganic, organic, acidic, alkaline, etc.

[0005] At present, there is no special integrated anti-gas filter canister for police use in the prior art, and most of them use industrial integrated gas filter canisters (such as Figure 6 ). The air intake mode of this gas filter canister is axial flow, that is, the air enters through the air inlet hole at the bottom of the canister, then passes through the smoke filter layer and activated carbon filtration, and enters the mask for people to breathe. The smoke filter layer mainly filters particulate matter, and the activated carbon filter body mainly filters harmful gases. This gas filter canister has the problem of short smoke filter layer protection and poor protection effect when used in police environments. The reason is that the dispersal of rioters generally occurs in open areas outdoors, where there is no lack of oxygen, and the environment is non-toxic or low-toxic. The main respiratory hazards are the smoke released by non-lethal weapons such as tear gas and stink bombs, as well as the smoke produced by incineration and arson.

[0006] In view of the fact that there is no comprehensive anti-gas filter canister specifically for police use in the existing technology, and borrowing industrial comprehensive gas filter canisters will lead to short service time and poor protection effect, it is urgent to develop a radial high-efficiency filter canister suitable for police riot control. Summary of the invention

[0007] The purpose of the present invention is to provide a police riot-proof radial high-efficiency low-resistance gas filter canister that can effectively prevent dust, smoke, biological agents and radioactive dust, and has a long service life in a police environment. The smoke filter layer is annular and has a good protective effect of radial air intake.

[0008] The present invention achieves the above-mentioned purpose through the following technical solutions: A police riot-proof radial high-efficiency and low-resistance gas filter canister, which consists of a canister body, a filter body, a filter cloth a, an intermediate air duct, a base, an upper fixed plate, an annular radial smoke filter layer, a filter layer partition, a filter cloth b and a lower fixed plate, characterized in that: the center of the inner cavity of the canister is provided with an intermediate air duct, the outer ring of the intermediate air duct is provided with a filter cloth a, the outer ring of the filter cloth a is provided with a filter body, the outer ring of the filter body is provided with a filter cloth b, the outer ring of the filter cloth b is provided with a filter layer partition, and the outer ring of the filter layer partition is provided with an annular radial smoke filter layer; the upper and lower ends of the inner cavity of the canister are provided with an upper fixed plate and a lower fixed plate; the intermediate air duct, the filter cloth a, the filter body, the filter cloth b, the filter layer partition and the annular radial smoke filter layer are installed between the upper fixed plate and the lower fixed plate of the inner cavity of the canister, and are fastened in the canister through the base.

[0009] The intermediate air channel and the upper fixing plate are ultrasonically welded to the top of the inner cavity of the tank body.

[0010] The filter layer partition plate and the annular radial smoke filter layer are fixedly mounted on the upper fixing plate and the lower fixing plate.

[0011] The lower fixing plate is clamped on the base through a convex ring.

[0012] The base is clamped on the bottom of the tank body through a clamping groove and is fixed on the bottom of the tank body through ultrasonic welding.

[0013] The filter body is made of activated carbon.

[0014] When inhaling, the police anti-riot radial high-efficiency low-resistance gas filter canister enters from the air inlet hole of the base, is dispersed upward in an annular manner on the inner wall of the canister through the interlayer formed by the lower fixed plate and the base, and then radially inhales through the annular radial smoke filter layer. After filtering out smoke and dust particles in the gas, the gas enters the filter body to filter out toxic and harmful gases, and then enters the mask through the middle airway.

[0015] The beneficial effects of the present invention compared with the prior art are: When the police anti-riot radial high-efficiency low-resistance gas filter canister inhales, the gas enters from the air inlet hole of the base, and is dispersed upward in an annular manner on the inner wall of the canister through the interlayer formed by the lower fixed plate and the base, and then enters the filter body to filter out the toxic and harmful gases after radially inletting through the annular radial smoke filter layer. The gas enters from all sides. When the height and diameter of the canister body remain unchanged, the effective area of ​​the air intake filtration is increased compared with the ordinary circular smoke filter layer that inlets from the bottom surface, the filtration efficiency is enhanced, the breathing resistance is also reduced, and the use time is also increased; the purpose of high efficiency and low resistance is achieved, and it is more suitable for environments with high requirements for smoke filtering and relatively less toxic gases. The overall structure of the police anti-riot radial high-efficiency low-resistance gas filter canister is compact, comfortable to wear, and the gas filter canister is convenient to store and use, which is convenient for the storage of the gas filter canister. It solves the problem that there is no special police comprehensive anti-gas filter canister in the prior art, and only industrial comprehensive gas filter canisters can be borrowed, resulting in short use time and poor protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a police riot-proof radial high-efficiency low-resistance gas filter canister; Figure 2 for Figure 1 AA section view; Figure 3 This is the gas flow diagram of the police riot-proof radial high-efficiency low-resistance gas filter canister; Figure 4 This is an exploded view of a police riot-proof radial high-efficiency, low-resistance gas filter canister; Figure 5 This is a schematic diagram of the structure of a police riot-proof radial high-efficiency low-resistance gas filter canister equipped with a cover and a soft plug; Figure 6 It is a schematic diagram of the structure of an industrial integrated gas filter canister in the prior art.

[0017] In the figure: 1, tank body, 2, filter body, 3, filter cloth a, 4, middle air duct, 5, base, 501, slot, 502, air inlet, 6, upper fixing plate, 7, annular radial smoke filter layer, 8, filter layer partition, 9, filter cloth b, 10, lower fixing plate, 1001, convex ring, 11, cover, 12, soft plug. DETAILED DESCRIPTION

[0018] The police anti-riot radial high-efficiency low-resistance gas filter canister is composed of a can body 1, a filter body 2, a filter cloth a3, an intermediate airway 4, a base 5, an upper fixed plate 6, an annular radial smoke filter layer 7, a filter layer partition plate 8, a filter cloth b9 and a lower fixed plate 10. The center of the inner cavity of the can body 1 is provided with an intermediate airway 4, the outer ring of the intermediate airway 4 is covered with a filter cloth a3, the outer ring of the filter cloth a3 is covered with a filter body 2, the outer ring of the filter body 2 is covered with a filter cloth b9, the outer ring of the filter cloth b9 is covered with a filter layer partition plate 8, and the outer ring of the filter layer partition plate 8 is covered with an annular radial smoke filter layer 7; the upper and lower ends of the inner cavity of the can body 1 are provided with an upper fixed plate 6 and a lower fixed plate 10; the intermediate airway 4, the filter cloth a3, the filter body 2, the filter cloth b9, the filter layer partition plate 8 and the annular radial smoke filter layer 7 are installed between the upper fixed plate 6 and the lower fixed plate 10 of the inner cavity of the can body 1, and are fastened in the can body 1 through the base 5.

[0019] Furthermore, the intermediate air passage 4 and the upper fixing plate 6 are connected to the tank body 1 as a whole by ultrasonic welding at the top of the inner cavity of the tank body 1. The filter layer partition plate 8 and the annular radial smoke filter layer 7 are fixedly mounted on the upper fixing plate 6 and the lower fixing plate 10. The lower fixing plate 10 is clamped on the base 5 by the convex ring 1001. The base 5 is clamped on the bottom of the tank body 1 by the clamping groove 501 and is fixed to the bottom of the tank body 1 by ultrasonic welding.

[0020] Furthermore, the filter body 2 is made of activated carbon, and its function is to filter out toxic and harmful gases in the gas through the activated carbon.

[0021] Furthermore, when the police anti-riot radial high-efficiency low-resistance gas filter canister is inhaled, the gas enters from the air inlet 502 of the base 5, is annularly dispersed upward on the inner wall of the canister 1 through the interlayer formed by the lower fixing plate 10 and the base 5, and then radially enters through the annular radial smoke filter layer 7, filters out smoke and dust particles in the gas, enters the filter body 2 to filter out toxic and harmful gases, and then enters the mask through the intermediate airway 4 to provide fresh air to the user (see attached Figure 3 ).

[0022] The police anti-riot radial high-efficiency low-resistance gas filter canister is convenient to store and use. The center hole of the base 5 can be sealed by pressing a soft plug 12 into the center hole. The can mouth part of the upper part of the can body 1 can be screwed on the cover 11. The top of the cover 11 has a sealing gasket. In this way, the center hole at the bottom of the canister canister can be sealed with the soft plug 12, and the top of the canister canister can be sealed with the cover 11, so that the entire canister canister forms a sealed body, which is convenient for the storage of the canister. When using it, you only need to quickly unscrew the cover 11, pull out the soft plug 12, and connect the mask to use it (see attached Figure 5 ).

[0023] The police anti-riot radial high-efficiency low-resistance gas filter canister adopts an annular radial smoke filter layer 7 (see attached Figure 2-4), the annular radial smoke filter layer 7 is composed of annular folded layers, so when the height and diameter of the tank body remain unchanged, compared with the ordinary circular smoke filter layer, its effective filtering area will be greatly increased, the filtering efficiency will be enhanced, and the service life will be increased. In addition, the annular structure of the annular radial smoke filter layer 7 is to take in air from all sides (see attached Figure 3 ), compared with the circular smoke filter layer that inhales air from the bottom, its air intake area will also be larger, and the breathing resistance will also be reduced, truly achieving the purpose of high efficiency and low resistance, and is more suitable for environments with high requirements for smoke filtering and relatively less toxic gases. In addition, the annular radial smoke filter layer 7 cooperates with the radial air intake, and the overall structure layout of the mask is more compact, so that the entire tank body is not too large, further increasing the wearing comfort of the user.

[0024] The above description is only a preferred embodiment of the present invention. The above examples do not impose any form of limitation on the essential content of the present invention. Any simple modification or deformation made by ordinary technicians in the technical field to the above specific implementation methods based on the technical essence of the present invention after reading this specification, as well as equivalent embodiments that may be changed or modified to equivalent changes using the technical content disclosed above, still fall within the scope of the technical solution of the present invention without departing from the essence and scope of the present invention.

Claims

1. A police anti-riot radial high-efficiency low-resistance gas filter canister, which comprises a canister body (1), a filter body (2), a filter cloth a (3), an intermediate airway (4), a base (5), an upper fixing plate (6), an annular radial smoke filter layer (7), a filter layer partition (8), a filter cloth b (9) and a lower fixing plate (10), characterized in that: An intermediate air passage (4) is arranged at the center of the inner cavity of the tank body (1); an outer ring of the intermediate air passage (4) is provided with a filter cloth a (3); an outer ring of the filter cloth a (3) is provided with a filter body (2); an outer ring of the filter body (2) is provided with a filter cloth b (9); an outer ring of the filter cloth b (9) is provided with a filter layer partition plate (8); an outer ring of the filter layer partition plate (8) is provided with an annular radial smoke filter layer (7); an upper fixing plate (6) and a lower fixing plate (10) are arranged at the upper and lower ends of the inner cavity of the tank body (1); the intermediate air passage (4), the filter cloth a (3), the filter body (2), the filter cloth b (9), the filter layer partition plate (8) and the annular radial smoke filter layer (7) are installed between the upper fixing plate (6) and the lower fixing plate (10) of the inner cavity of the tank body (1), and are fixed in the tank body (1) via a base (5).

2. The police riot-proof radial high-efficiency low-resistance gas filter canister according to claim 1, characterized in that: The intermediate air channel (4) and the upper fixing plate (6) are ultrasonically welded to the top of the inner cavity of the tank body (1).

3. The police riot-proof radial high-efficiency low-resistance gas filter canister according to claim 1, characterized in that: The filter layer partition plate (8) and the annular radial smoke filter layer (7) are fixedly mounted on an upper fixed plate (6) and a lower fixed plate (10).

4. The police riot-proof radial high-efficiency low-resistance gas filter canister according to claim 1, characterized in that: The lower fixing plate (10) is clamped on the base (5) via a convex ring (1001).

5. The police riot-proof radial high-efficiency low-resistance gas filter canister according to claim 1, characterized in that: The base (5) is clamped to the bottom of the tank body (1) via a clamping groove (501) and is fixed to the bottom of the tank body (1) via ultrasonic welding.

6. The police riot-proof radial high-efficiency low-resistance gas filter canister according to claim 1, characterized in that: The filter body (2) is made of activated carbon.

7. The police riot-proof radial high-efficiency low-resistance gas filter canister according to claim 1, characterized in that: When the police anti-riot radial high-efficiency low-resistance gas filter canister inhales, gas enters from the air inlet (502) of the base (5), passes through the sandwich formed by the lower fixing plate (10) and the base (5), and is annularly dispersed upward on the inner wall of the canister body (1), and then radially enters through the annular radial smoke filter layer (7), filters out smoke and dust particles in the gas, enters the filter body (2), filters out toxic and harmful gases, and then enters the mask through the intermediate airway (4).

Images