Police anti-riot radial efficient low-resistance canister

Abstract

The utility model 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 utility model 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] This utility model relates to a product for police gas masks used in special tasks and high-risk situations such as special duty and law enforcement, mass riots, and terrorist incidents. Specifically, it relates to a police riot control radial high-efficiency low-resistance filter canister. Background Technology

[0002] Police gas masks are generally used in conjunction with police riot helmets. The interfaces on police gas masks can be fitted with filter canisters for different scenarios, and they are mainly used in environments with toxic or harmful substances or fine particulate matter.

[0003] When dealing with terrorist incidents, police can use particulate filters when the only available irritant is smoke-like. These filters can filter CS, CN, and OC pepper spray. The internal smoke filter layer uses HEPA material to effectively prevent dust, fog, smoke, biological agents (bacteria, viruses, fungal spores, etc.), and radioactive dust.

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

[0005] Currently, there are no dedicated integrated gas filter canisters for police use; most are industrial integrated gas filter canisters (such as...). Figure 6 This type of gas filter canister uses an axial flow intake method, meaning air enters through an air inlet at the bottom of the canister, then passes through a smoke filter layer and activated carbon filtration before entering the mask for respiration. The smoke filter layer primarily filters particulate matter, while the activated carbon filter primarily filters harmful gases. However, this type of gas filter canister suffers from problems in police environments, including a short service life for the smoke filter layer and poor protective effect. This is because dispersing rioters typically occurs in open outdoor areas with sufficient oxygen and low- or non-toxic environments. The main respiratory hazards come from the smoke released by non-lethal weapons such as tear gas and stink bombs, as well as smoke from arson.

[0006] In view of the fact that there is no dedicated integrated gas filter canister for police use in the existing technology, and that using integrated gas filter canisters for industrial use leads to short service time and poor protective effect, there is an urgent need to develop a radial high-efficiency filter canister suitable for police riot control. Summary of the Invention

[0007] The purpose of this utility model is to address the shortcomings of existing technologies by providing a police riot control type radial high-efficiency low-resistance filter canister that can effectively prevent dust, smoke, biological agents and radioactive dust, and has a long service life in police environments with a long-lasting smoke filter layer. The smoke filter layer is annular and has good radial air intake protection.

[0008] This utility model achieves the above objectives through the following technical solution:

[0009] A police-grade riot control radial high-efficiency low-resistance filter canister comprises a canister body, a filter body, filter cloth a, a central air duct, a base, an upper fixing plate, an annular radial smoke filter layer, a filter layer partition, filter cloth b, and a lower fixing plate. Its features include: a central air duct at the center of the canister's inner cavity; filter cloth a fitted around the outer circumference of the central air duct; a filter body fitted around the outer circumference of filter cloth a; filter cloth b fitted around the outer circumference of filter cloth b; a filter layer partition fitted around the outer circumference of filter cloth b; and an annular radial smoke filter layer fitted around the outer circumference of the filter layer partition. An upper fixing plate and a lower fixing plate are mounted at the upper and lower ends of the canister's inner cavity. The central air duct, filter cloth a, filter body, filter cloth b, filter layer partition, and annular radial smoke filter layer are installed between the upper and lower fixing plates within the canister's inner cavity and secured to the canister body by the base.

[0010] The intermediate air passage and the upper fixing plate are ultrasonically welded to the top of the inner cavity of the tank.

[0011] The filter layer partition and the annular radial smoke filter layer are fixedly installed on the upper fixing plate and the lower fixing plate.

[0012] The lower fixing plate is fastened to the base by a convex ring.

[0013] The base is snapped into the bottom of the tank via a slot and then secured to the bottom of the tank by ultrasonic welding.

[0014] The filter element is made of activated carbon.

[0015] When the police riot control radial high-efficiency low-resistance gas filter canister is inhaled, the gas enters from the air inlet of the base, and is distributed upward in a ring on the inner wall of the canister through the sandwich formed by the lower fixing plate and the base. Then, the gas enters radially through the annular radial smoke filter layer, filtering out smoke and dust particles in the gas. After entering the filter body, the gas is filtered out to remove toxic and harmful gases, and then enters the mask through the middle air channel.

[0016] The advantages of this utility model compared with the prior art are as follows:

[0017] This police riot control radial high-efficiency low-resistance filter canister enters through the air inlet at the base, and is then distributed upwards in a ring on the inner wall of the canister through the interlayer formed by the lower fixing plate and the base. The gas then passes through the annular radial smoke filter layer, filtering out smoke and dust particles before entering the filter body to remove toxic and harmful gases. Finally, it enters the face mask through the central airway. The filter canister uses an annular smoke filter layer, with gas entering from all sides. Compared to ordinary circular smoke filters that enter from the bottom, this increases the effective filtration area while maintaining the same height and diameter of the canister, resulting in enhanced filtration efficiency, reduced breathing resistance, and extended usage time. It achieves high efficiency and low resistance, making it more suitable for environments with high smoke filtration requirements and relatively low levels of toxic gases. The police riot control radial high-efficiency low-resistance filter canister has a compact overall structure, is comfortable to wear, and is convenient to store and use. It solves the problem of existing technologies lacking dedicated police-specific integrated gas filter canisters, which necessitate the use of industrial integrated filter canisters, leading to short usage time and poor protective effect. Attached Figure Description

[0018] Figure 1 A schematic diagram of a police riot control radial high-efficiency low-resistance filter canister.

[0019] Figure 2 for Figure 1 AA section view;

[0020] Figure 3 A diagram showing the gas flow direction of a police riot control radial high-efficiency low-resistance filter canister;

[0021] Figure 4 An exploded view of a police riot control radial high-efficiency low-resistance filter canister;

[0022] Figure 5 A schematic diagram of a police riot control radial high-efficiency low-resistance filter canister equipped with a lid and a soft stopper;

[0023] Figure 6 This is a schematic diagram of the structure of an industrial integrated filter canister in the prior art.

[0024] In the diagram: 1. Tank body, 2. Filter body, 3. Filter cloth a, 4. Intermediate air passage, 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. Raised ring, 11. Cover, 12. Soft plug. Detailed Implementation

[0025] This police riot control radial high-efficiency low-resistance filter canister consists of a canister body 1, a filter body 2, a filter cloth a3, an intermediate air duct 4, a base 5, an upper fixing plate 6, an annular radial smoke filter layer 7, a filter layer partition 8, a filter cloth b9, and a lower fixing plate 10. The canister body 1 has an intermediate air duct 4 at its center. A filter cloth a3 is fitted around the outer ring of the intermediate air duct 4. A filter body 2 is fitted around the outer ring of the filter cloth a3. A filter cloth b9 is fitted around the outer ring of the filter body 2. A filter layer partition 8 is fitted around the outer ring of the filter cloth b9. An annular radial smoke filter layer 7 is fitted around the outer ring of the filter layer partition 8. The upper fixing plate 6 and the lower fixing plate 10 are installed at the upper and lower ends of the canister body 1. The intermediate air duct 4, filter cloth a3, filter body 2, filter cloth b9, filter layer partition 8, and annular radial smoke filter layer 7 are installed between the upper fixing plate 6 and the lower fixing plate 10 within the canister body 1 and are secured to the canister body 1 by the base 5.

[0026] Furthermore, the intermediate air duct 4 and the upper fixing plate 6 are ultrasonically welded to the top of the inner cavity of the tank body 1, forming a whole with the tank body 1. The filter layer partition 8 and the annular radial smoke filter layer 7 are fixedly installed on the upper fixing plate 6 and the lower fixing plate 10. The lower fixing plate 10 is fastened to the base 5 by a protruding ring 1001. The base 5 is fastened to the bottom of the tank body 1 by a slot 501 and is fixed to the bottom of the tank body 1 by ultrasonic welding.

[0027] Furthermore, the filter element 2 is made of activated carbon, and its function is to filter out toxic and harmful gases from the gas.

[0028] Furthermore, when the police riot control radial high-efficiency low-resistance gas filter canister is inhaled, the gas enters through the air inlet 502 of the base 5, and is distributed upwards in a ring on the inner wall of the canister 1 through the interlayer formed by the lower fixing plate 10 and the base 5. Then, it enters radially through the annular radial smoke filter layer 7, filtering out smoke and dust particles in the gas. After entering the filter body 2, it filters out toxic and harmful gases, and then enters the mask through the middle air passage 4 to provide fresh air to the user (see Appendix). Figure 3 ).

[0029] This police riot control radial high-efficiency low-resistance filter canister is easy 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 canister opening at the top of the canister body 1 can be screwed on with a cap 11. The top of the cap 11 has a sealing gasket, which seals the center hole at the bottom of the filter canister with the soft plug 12 and the top of the filter canister with the cap 11, forming a sealed body for easy storage. When in use, simply unscrew the cap 11, remove the soft plug 12, and connect it to the face mask (see appendix). Figure 5 ).

[0030] This police riot control radial high-efficiency low-resistance filter canister uses an annular radial smoke filter layer 7 (see appendix). Figure 2-4The annular radial smoke filter layer 7 is composed of annular folded layers. Therefore, with the canister height and diameter remaining unchanged, its effective filtration area is greatly increased compared to a conventional circular smoke filter layer, resulting in enhanced filtration efficiency and extended service life. Furthermore, the annular structure of the annular radial smoke filter layer 7 allows air to enter from all four sides (see Appendix). Figure 3 Compared to circular smoke filters, the bottom-entry air intake area is larger, reducing breathing resistance and achieving true high efficiency and low resistance. This makes it more suitable for environments with high smoke filtration requirements and relatively low levels of toxic gases. Furthermore, the annular radial smoke filter layer 7, combined with radial air intake, results in a more compact overall mask structure, preventing the entire canister from becoming too large and further enhancing user comfort.

[0031] The above description is merely a preferred embodiment of the present utility model. The above examples do not limit the substantive content of the present utility model in any way. Any simple modifications or variations made by those skilled in the art to the above specific embodiments based on the technical essence of the present utility model after reading this specification, as well as equivalent embodiments that may be changed or modified using the disclosed technical content, shall still fall within the scope of the technical solution of the present utility model and shall not depart from the essence and scope of the present utility model.

Claims

1. A police riot control radial high-efficiency low-resistance filter canister, comprising a canister body (1), a filter body (2), a filter cloth a (3), an intermediate air duct (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: The inner cavity of the tank (1) is equipped with a central air passage (4), a filter cloth a (3) is fitted on the outer ring of the central air passage (4), a filter body (2) is fitted on the outer ring of the filter cloth a (3), a filter cloth b (9) is fitted on the outer ring of the filter body (2), a filter layer partition (8) is fitted on the outer ring of the filter cloth b (9), and an annular radial smoke filter layer (7) is fitted on the outer ring of the filter layer partition (8). The upper and lower ends of the inner cavity of the tank (1) are equipped with an upper fixing plate (6) and a lower fixing plate (10). The central air passage (4), filter cloth a (3), filter body (2), filter cloth b (9), filter layer partition (8) and an annular radial smoke filter layer (7) are installed between the upper fixing plate (6) and the lower fixing plate (10) in the inner cavity of the tank (1) and are fixed in the tank (1) by a base (5).

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

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

4. A police riot control radial high-efficiency low-resistance filter canister according to claim 1, characterized in that: The lower fixing plate (10) is fastened to the base (5) by a protruding ring (1001).

5. A police riot control radial high-efficiency low-resistance filter canister according to claim 1, characterized in that: The base (5) is snapped into the bottom of the tank (1) through the slot (501) and is fixed to the bottom of the tank (1) by ultrasonic welding.

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

7. A police riot control radial high-efficiency low-resistance filter canister according to claim 1, characterized in that: When the police riot control radial high efficiency low resistance filter canister is inhaled, the gas enters from the air inlet (502) of the base (5), and is distributed upward in a ring on the inner wall of the canister (1) through the interlayer formed by the lower fixing plate (10) and the base (5). Then, it enters radially through the annular radial smoke filter layer (7), filters out smoke and dust particles in the gas, and then enters the filter body (2) to filter out toxic and harmful gases. Finally, it enters the mask through the middle air channel (4).

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