Lightweight canister

Abstract

The utility model discloses a kind of light weight filter canister, belong to filter formula antitoxic technical field, including jar body, jar bottom, filter layer and filter smoke layer;Filter layer is set in jar body;Jar bottom includes filter smoke cavity and the air inlet cavity of being set in filter smoke cavity bottom, and filter smoke cavity is communicated with air inlet cavity;Filter smoke cavity is set in jar body bottom, and filter smoke cavity is communicated with jar body;Filter smoke layer is set in the cavity of filter smoke cavity.This utility model saves filter smoke layer shell, thereby reduce the overall weight of filter canister, improve human body wearing comfort and toxic and harmful gas protection performance.

Description

Technical Field

[0001] This utility model belongs to the field of filter-type anti-toxic technology, specifically relating to a lightweight filter canister. Background Technology

[0002] Gas filter canisters are typically used in conjunction with protective face shields to filter and protect against toxic and harmful gases, thus protecting the human respiratory system.

[0003] Protective face shields come in two types: single-canister and double-canister. Regardless of whether it's a single-canister or double-canister type, the weight of the filter canister directly affects the performance of the face shield because it needs to be worn on the face. On the one hand, excessive weight increases the burden on the head, leading to inconvenience; on the other hand, excessive weight causes the face shield to sag, affecting its airtightness and protective effectiveness. Therefore, reducing the weight of the filter canister is crucial for improving wearing comfort and protective performance.

[0004] A gas filter canister typically consists of a filter layer, a smoke filter layer, and a shell. The amount of filter material in the filter layer determines the duration of protection against toxic and harmful gases, while the height of the smoke filter layer determines the canister's inhalation resistance. Therefore, weight cannot be reduced by sacrificing the amount of filter material or the thickness of the smoke filter layer.

[0005] Currently, common filter canisters typically consist of: a canister body 1 and a canister bottom 8 (both made of aluminum alloy); such as Figure 2 As shown, the filter layer 4 and the smoke filter layer 6 are disposed inside the canister, and the canister bottom 8 is disposed at the bottom opening of the canister 1; the bottom of the smoke filter layer shell 9 is supported by the canister bottom 8, while its top extends into the canister 1. Therefore, in the above structure, some functions of the canister body and the canister bottom overlap with the smoke filter layer shell, resulting in an increase in the overall weight of the filter canister. Utility Model Content

[0006] In view of this, the present invention provides a lightweight filter canister that eliminates the smoke filter shell, thereby reducing the overall weight of the filter canister and improving the comfort of wearing it and the protective performance against toxic and harmful gases.

[0007] This utility model is achieved through the following technical solution:

[0008] A lightweight filter canister includes: a canister body, a canister bottom, a filter layer, and a smoke filter layer;

[0009] The filter layer is located inside the tank;

[0010] The bottom of the canister includes: a smoke filtering chamber and an air inlet chamber located at the bottom of the smoke filtering chamber;

[0011] The smoke filtration chamber is located at the bottom of the tank;

[0012] The smoke filter layer is set inside the smoke filter chamber.

[0013] Furthermore, the smoke filter chamber is cylindrical, and the air intake chamber is a frustum-shaped structure that is wider at the top and narrower at the bottom.

[0014] Furthermore, the lightweight filter canister also includes: a flow divider;

[0015] The diverter plate is located inside the bottom of the tank, at the junction of the smoke filter chamber and the air intake chamber;

[0016] The smoke filter layer is located on the upper surface of the flow divider.

[0017] Furthermore, the lightweight filter canister also includes: an upper perforated plate and a lower perforated plate;

[0018] The upper and lower perforated plates are installed inside the tank, located on the upper and lower ends of the filter layer, respectively.

[0019] Furthermore, the lightweight filter canister also includes: a support;

[0020] The top of the support abuts against the inner upper surface of the tank, and the bottom of the support abuts against the upper surface of the orifice plate.

[0021] Furthermore, the top of the tank is provided with a connecting structure for threaded connection with the protective face shield.

[0022] Furthermore, the lower end face of the tank body is provided with a flange along its circumference;

[0023] The upper end face of the smoke filtering chamber at the bottom of the can is provided with a flange along its circumference;

[0024] The flange of the can body engages with the flange of the can bottom.

[0025] Furthermore, the outer wall surface of the air intake cavity at the bottom of the tank is uniformly provided with several reinforcing ribs along its circumference.

[0026] Furthermore, the top of the tank is uniformly provided with several reinforcing ribs along its circumference.

[0027] Beneficial effects:

[0028] (1) The present invention provides a lightweight filter canister, the bottom of which is divided into a smoke-filtering chamber and an air-inlet chamber. The smoke-filtering layer is set inside the smoke-filtering chamber. Compared with the existing filter canisters, the smoke-filtering layer shell is eliminated, thereby reducing the overall weight of the filter canister, improving the comfort of wearing it, and avoiding the problem of the protective mask falling due to the heavy weight of the filter canister, thus ensuring the airtightness and protection factor of the protective mask. On the other hand, the smoke-filtering layer is set at the bottom of the canister, which can reduce the overall height of the canister (the reduced height is approximately equal to the height of the smoke-filtering layer). When the material and wall thickness are the same, the strength of the canister can be improved, making it less prone to deformation.

[0029] (2) The present invention provides a lightweight filter canister with a cylindrical filter chamber and a frustum-shaped air inlet chamber. The connection between the filter chamber and the air inlet chamber is bent, so that the overall strength can be guaranteed even if the height of the bottom of the canister is increased. The air inlet chamber is a frustum-shaped structure that is wider at the top and narrower at the bottom, which is conducive to the uniform distribution of airflow.

[0030] (3) The present invention provides a lightweight filter canister with a diverter plate set in the bottom of the canister at the junction of the smoke filter chamber and the air inlet chamber, which further improves the uniformity of airflow distribution.

[0031] (4) The present invention provides a lightweight filter canister with an upper perforated plate and a lower perforated plate disposed inside the canister, located on the upper and lower ends of the filter layer, respectively, so that the airflow is evenly distributed and the filtration effect and filtration efficiency are improved.

[0032] (5) A lightweight filter canister of the present invention has a top support that abuts against the inner upper surface of the canister body, and the support drives the bottom to abut against the upper surface of the perforated plate. The support can press the perforated plate tightly against the upper surface of the filter layer, preventing the filter material in the filter layer from shifting or loosening when the airflow passes through, thereby maintaining the structural integrity and filtration efficiency of the filter layer.

[0033] (6) A lightweight filter canister of the present invention has a number of reinforcing ribs evenly distributed along its circumference on the outer wall surface of the air inlet chamber at the bottom of the canister, which can further improve the strength of the bottom of the canister and prevent the bottom of the canister from deforming.

[0034] (7) A lightweight filter canister of the present invention has several reinforcing ribs evenly distributed along its circumference on the top of the canister, which can further improve the strength of the canister and prevent the canister from deforming. Attached Figure Description

[0035] Figure 1 This is a structural diagram of the filter canister of this utility model;

[0036] Figure 2 This is a schematic diagram of the structure of a common metal filter canister;

[0037] Among them, 1-tank body, 2-support, 3-upper perforated plate, 4-filter layer, 5-lower perforated plate, 6-smoke filter layer, 7-diverter plate, 8-tank bottom, 9-smoke filter layer shell. Detailed Implementation

[0038] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0039] This embodiment provides a lightweight filter canister, such as Figure 1 As shown, it includes: tank body 1, tank bottom 8, filter layer 4 and smoke filter layer 6.

[0040] The tank bottom 8 includes a smoke-filtering chamber and an air inlet chamber at the bottom of the smoke-filtering chamber. The smoke-filtering chamber is connected to the air inlet chamber (i.e., gas can flow into the smoke-filtering chamber through the air inlet chamber). The smoke-filtering chamber has a cylindrical structure, and the air inlet chamber has a frustum-shaped structure that is wider at the top and narrower at the bottom. The frustum-shaped structure is conducive to the uniform distribution of airflow. The upper end face of the smoke-filtering chamber has a flange along its circumference for connecting to the tank body 1. As an example, the outer wall surface of the air inlet chamber of the tank bottom 8 is evenly provided with several reinforcing ribs along its circumference to prevent deformation of the tank bottom 8.

[0041] The smoke filter layer 6 is disposed within the smoke filter chamber at the bottom of the tank 8.

[0042] The tank body 1 is open at both ends, and a connecting structure is provided at the top of the tank body 1 for connecting a protective face shield. The lower end face of the bottom of the tank body 1 has a flange along its circumference, which engages with the flange of the smoke-filtering chamber of the tank bottom 8. The flange of the tank bottom 8 provides axial and radial restraint to the flange of the tank body 1. The smoke-filtering chamber communicates with the internal space of the tank body 1 (i.e., the gas flowing into the smoke-filtering chamber enters the interior of the tank body 1 through the smoke-filtering chamber). In this embodiment, the connecting structure has external threads for threaded connection with the protective face shield; several reinforcing ribs are evenly distributed along the circumference of the top of the tank body 1 to prevent deformation of the tank body 1.

[0043] The filter layer 4 is installed inside the tank 1 and is used to filter harmful gases.

[0044] As an example, the filter canister further includes an upper perforated plate 3 and a lower perforated plate 5. The upper perforated plate 3 and the lower perforated plate 5 are disposed inside the canister body 1, located on the upper and lower ends of the filter layer 4, respectively, so that the airflow is evenly distributed and the filtration efficiency is improved.

[0045] As an example, the filter canister further includes a support 2. The support 2 is disposed inside the canister 1, with its top abutting against the upper inner surface of the canister 1 and its bottom abutting against the upper surface of the upper perforated plate 3. The support 2 can press the upper perforated plate 3 tightly against the upper surface of the filter layer 4, preventing the filter material in the filter layer 4 from shifting or loosening when airflow passes through, thereby maintaining the structural integrity and filtration efficiency of the filter layer.

[0046] As an example, the filter canister further includes a diverter plate 7. The diverter plate 7 is disposed inside the bottom 8 of the canister, at the junction of the smoke filtration chamber and the air inlet chamber. The smoke filtration layer 6 is disposed on the upper surface of the diverter plate 7. The diverter plate 7 is used to prevent short-circuiting of harmful gases passing through the filter canister, so that the harmful gases entering the smoke filtration layer 6 are evenly distributed.

[0047] In this embodiment, both the tank body 1 and the tank bottom 8 are made of aluminum alloy.

[0048] Taking a single filter canister as an example:

[0049] When the canister is made of 0.6mm thick aluminum alloy with an inner diameter of 84mm, the height of the cavity is reduced by 15mm, and the canister weight is reduced by approximately 7.2g. When the bottom is made of 0.6mm thick aluminum alloy with a bottom diameter of 74mm and a maximum flange diameter of 98mm, the bottom height is increased by 13mm, and the bottom weight is increased by approximately 4.8g. When the smoke filter shell is made of 0.5mm thick aluminum alloy with a cavity height of 15mm and an inner diameter of 74mm, the weight is approximately 10.2g. Eliminating the smoke filter shell reduces the weight by approximately 10.2g. Therefore, the weight of the filter canister can be reduced by approximately 12.6g (approximately 25.2g when the protective mask is a dual-canister type), and the total weight reduction exceeds 10% of the weight of existing filter canisters.

[0050] In summary, the above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A lightweight filter canister, characterized in that, include: Tank body (1), tank bottom (8), filter layer (4) and smoke filter layer (6); The filter layer (4) is installed inside the tank (1); The bottom of the tank (8) includes: a smoke filter chamber and an air inlet chamber located at the bottom of the smoke filter chamber, the smoke filter chamber and the air inlet chamber being connected; The smoke filtering chamber is located at the bottom of the tank (1) and is connected to the tank (1); The smoke filter layer (6) is set inside the smoke filter chamber.

2. The lightweight filter canister as described in claim 1, characterized in that, The smoke filter chamber is cylindrical, and the air intake chamber is a frustum-shaped structure that is wider at the top and narrower at the bottom.

3. The lightweight filter canister as described in claim 1, characterized in that, Also includes: Shunt plate (7); The diverter plate (7) is set inside the bottom of the tank (8), at the junction of the smoke filter chamber and the air inlet chamber; The smoke filter layer (6) is located on the upper surface of the flow divider (7).

4. The lightweight filter canister as described in claim 1, characterized in that, Also includes: Upper perforated plate (3) and lower perforated plate (5); The upper perforated plate (3) and the lower perforated plate (5) are installed inside the tank body (1), located on the upper and lower ends of the filter layer (4), respectively.

5. A lightweight filter canister as described in claim 4, characterized in that, Also includes: Support (2); The top of the support (2) abuts against the inner upper surface of the tank (1), and the bottom of the support (2) abuts against the upper surface of the upper perforated plate (3).

6. The lightweight filter canister as described in claim 1, characterized in that, The top of the tank (1) is provided with a connecting structure that is threadedly connected to the protective mask.

7. A lightweight filter canister as described in claim 1, characterized in that, The lower end face of the tank (1) is provided with a flange along its circumference; The upper end face of the smoke filtering chamber at the bottom of the can is provided with a flange along its circumference; The flange of the tank body (1) engages with the flange of the tank bottom (8).

8. A lightweight filter canister as described in any one of claims 1-7, characterized in that, Several reinforcing ribs are evenly distributed along the circumference of the outer wall surface of the air inlet cavity of the tank bottom (8).

9. A lightweight filter canister as described in any one of claims 1-7, characterized in that, The top of the tank (1) is uniformly provided with several reinforcing ribs along its circumference.

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