Replaceable medicament type self-rescue respirator

Abstract

The utility model belongs to the technical field of fire-fighting equipment, and particularly relates to a medicament-replaceable self-rescue respirator which comprises a protective hood, a transparent visual window is arranged above the front end face of the protective hood, and an elastic tightening neck ring for sealing the neck is integrally formed at the bottom of the protective hood. A filter carbon tank communicated with the interior of the protective hood is mounted on the side wall of the front end surface of the protective hood; a filter element frame filled with a replaceable filter element is arranged in the filter carbon tank in a sliding manner; the end of the filter carbon tank is connected with a sealing tank cover through external threads, and the other end of the sealing tank cover is provided with a breather valve body. The rotary valve cover is driven by the valve rod to open the breather valve body, a user can conveniently open and close the breather valve body and the filter carbon tank to be communicated with the outside, and the breather can be conveniently and rapidly used. After the sealing tank cover is rotationally opened, the filter element frame is taken out, and the filter element in the filter carbon tank is replaced; the respirator or the filter carbon tank does not need to be integrally replaced; therefore, the long-time endurance of the respirator is achieved, and the use cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of fire-fighting equipment technology, specifically relating to a replaceable medicine self-rescue respirator. Background Technology

[0002] A filtering self-rescue respirator is a specialized respirator that protects the human respiratory organs from harmful external toxic gases. It consists of a head cover, a half-mask, and a filter canister. However, the scientific and rational design of a product's structure is often related to the user's health and safety.

[0003] Fire-fighting filter-type self-rescue respirators with filter canisters effectively filter out CO and other harmful gases, providing flame retardancy and heat insulation, and offering people an opportunity to escape from dense smoke and toxic gases. However, in existing fire-fighting filter-type self-rescue respirators, the filter canisters are made of stainless steel, which is prone to heat conduction and corrosion. In the event of a fire, prolonged use or filter failure can lead to difficulties in replacing the filter element, potentially causing serious consequences. Furthermore, the air inlet and outlet ports on existing filter canisters are sealed with plugs, which are inconvenient to insert and remove during actual use, especially in panic, hindering the rapid use of the self-rescue respirator. Utility Model Content

[0004] To address the problems mentioned in the background section, this invention provides a replaceable medication self-rescue respirator. A rotating valve cover, driven by a valve stem, opens the breathing valve body, facilitating the user's opening and closing of the breathing valve body and the filter canister to connect with the outside environment, enabling rapid use of the respirator. After rotating open the sealed canister cover, the filter holder can be removed, and the filter element inside the filter canister can be replaced; there is no need to replace the entire respirator or filter canister. This achieves extended respirator operation and reduces operating costs.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a replaceable medication self-rescue respirator, including a protective hood, with a head cover integrally formed on the top of the protective hood, a transparent viewing window above the front end face of the protective hood, and an elastic neck ring integrally formed at the bottom of the protective hood to seal the neck; a filter carbon canister connected to the inside of the protective hood is installed on the side wall of the front end face of the protective hood, and a filter element holder for filling replaceable filter elements is slidably provided inside the filter carbon canister; a sealing cap is connected to the end of the filter carbon canister by external threads, and a breathing valve body is installed on the other end of the sealing cap, with a valve cover threadedly connected to the breathing valve body for opening and closing the valve body.

[0006] As a preferred embodiment, the filter cartridge frame is divided into a central filter cartridge chamber, two activated carbon filter cartridge chambers, and a HEPA filter cartridge chamber by a filter screen. An arc-shaped retaining plate is rotatably provided on the filter cartridge filling chamber, and fixing buckles are provided on the outer edges of the activated carbon filter cartridge chamber and the HEPA filter cartridge chamber.

[0007] As a preferred embodiment, the filter carbon canister and the sealing canister cover are equipped with a limiting bracket for limiting and fixing the filter element frame; the limiting bracket at the inner end of the filter carbon canister is provided with smoke filter paper.

[0008] As a preferred embodiment, the breathing valve body is connected to the filter carbon canister, and the breathing valve body is provided with a venting valve core for opening and closing the valve body. The valve cover is connected to the venting valve core through a valve stem, and the valve cover is provided with several venting holes.

[0009] As a preferred embodiment, one end of the arc-shaped card plate is rotatably connected to the filter element frame via a hinge shaft, and the other end is engaged with a slot on the filter element frame.

[0010] As a preferred embodiment, a sealing gasket is provided on the inner side of the connection between the protective headgear and the elastic neck collar.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This utility model features a rotating valve cover on the breathing valve body. The valve cover, driven by the valve stem, opens the ventilation valve core inside the valve body, thereby allowing the filter carbon canister to connect with the outside through the breathing valve body and ventilation holes for breathing. This facilitates the user's opening and closing of the breathing valve body and filter carbon canister to connect with the outside world, enabling the rapid use of the self-rescue respirator.

[0013] After prolonged use, the filter element inside the carbon filter canister needs to be replaced. Simply rotate to open the sealed canister cover, remove the filter element holder, and replace it with a new filter element holder and filter element. There is no need to replace the entire respirator or carbon filter canister. This allows the respirator to operate for a longer period of time and reduces operating costs.

[0014] Users place the protective hood over their head using an elastic neck strap. The elastic neck strap and sealing gasket can seal the neck, preventing toxic fumes from entering the protective hood from the neck and affecting breathing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure for replacing the filter carbon canister in this utility model;

[0017] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure at mid-longitudinal section;

[0018] Figure 4 This is a schematic diagram of the assembly structure of the filter carbon canister in this utility model;

[0019] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure at the mid-longitudinal section.

[0020] Explanation of icon numbers:

[0021] 1. Protective headgear; 2. Elastic neck brace; 3. Head cover; 4. Transparent viewing window;

[0022] 5. Filter carbon canister; 51. External thread;

[0023] 6. Sealed can lid;

[0024] 7. Filter cartridge holder; 71. Filter screen; 72. Arc-shaped retaining plate; 73. Activated carbon filter cartridge chamber; 74. HEPA filter cartridge chamber;

[0025] 8. Breathing valve body; 81. Ventilation valve core;

[0026] 9. Valve cover; 91. Vent hole;

[0027] 10. Limiting bracket. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0029] Please see Figure 1-5 This utility model provides the following technical solution: a replaceable drug-type self-rescue respirator, including a protective hood 1, a head cover 3 integrally formed on the top of the protective hood 1, a transparent viewing window 4 above the front end face of the protective hood 1 for easy observation by personnel, an elastic neck collar 2 integrally formed at the bottom of the protective hood 1 to seal the neck and prevent toxic fumes from entering the protective hood 1 from the neck and affecting breathing; a filter carbon canister 5 connected to the inside of the protective hood 1 is installed on the side wall of the front end face of the protective hood 1, and a filter element holder 7 for filling replaceable filter elements is slidably provided inside the filter carbon canister 5; a sealing canister cap 6 is connected to the end of the filter carbon canister 5 by external thread 51, and a breathing valve body 8 is installed on the other end of the sealing canister cap 6, with a valve cover 9 threadedly connected to the breathing valve body 8 for opening and closing the valve body; Rotating the valve cover 9 on the breathing valve body 8 opens the ventilation valve core 81 inside the valve body via the valve stem, allowing the filter canister 5 to connect with the outside for breathing. This facilitates the user's opening and closing of the breathing valve body 8 and the filter canister 5, enabling rapid use of the self-rescue respirator. After prolonged use, the filter element inside the filter canister 5 needs to be replaced. Simply rotate and open the sealing canister cover 6 to remove the filter element holder 7 and replace it with a new one. There is no need to replace the entire respirator or filter canister, thus achieving extended respirator operation and reducing operating costs.

[0030] Specifically, the filter cartridge frame 7 is internally divided into a central filter cartridge chamber, two end activated carbon filter cartridge chambers 73 and HEPA filter cartridge chambers 74 by a filter screen plate 71. An arc-shaped retaining plate 72 is rotatably provided on the filter cartridge filling chamber. The outer edges of the activated carbon filter cartridge chamber 73 and HEPA filter cartridge chamber 74 are provided with fixing buckles for fixing the filter cartridges. The filter cartridge chamber in the middle of the filter cartridge frame 7 is filled with a filter cartridge, and the activated carbon filter cartridge chamber 73 and HEPA filter cartridge chamber 74 at both ends of the filter cartridge frame 7 are filled with activated carbon filter cartridges and HEPA filter cartridges, respectively. The filter cartridge frame 7 and the filter cartridges are packaged in a sealed bag.

[0031] Specifically, the filter carbon canister 5 and the sealing canister cover 6 are equipped with a limiting bracket 10 for limiting and fixing the filter element frame 7; the limiting bracket 10 at the inner end of the filter carbon canister 5 is provided with smoke filter paper; the smoke filter paper is used to further filter the smoke, ensuring that the gas entering the protective headgear 1 is more suitable for the user to breathe.

[0032] Specifically, the breathing valve body 8 is connected to the filter carbon canister 5. The breathing valve body 8 is equipped with a ventilation valve core 81 for opening and closing the valve body. The valve cover 9 is connected to the ventilation valve core 81 through a valve stem. The valve cover 9 has several ventilation holes 91. The valve cover 9 opens the ventilation valve core 81 inside the valve body through the valve stem, thereby allowing the filter carbon canister 5 to communicate with the outside world for breathing through the breathing valve body 8 and the ventilation holes 91. This makes it easy for the user to open and close the breathing valve body 8 and the filter carbon canister 5 to communicate with the outside world, facilitating the rapid use of the self-rescue respirator.

[0033] Specifically, one end of the arc-shaped card plate 72 is rotatably connected to the filter element frame 7 via a hinge shaft, and the other end is engaged with the card slot on the filter element frame 7.

[0034] Specifically, a sealing gasket is provided on the inner side of the connection between the protective headgear 1 and the elastic neck ring 2; when the user puts the protective headgear 1 on his head through the elastic neck ring 2, the elastic neck ring 2 and the sealing gasket can seal the neck and prevent toxic fumes from entering the protective headgear 1 from the neck and affecting breathing.

[0035] The working principle and usage process of this utility model are as follows: When using this utility model, the sealing cap 6 is opened by rotating it from the filter carbon canister 5 through the thread, and the filter element frame 7, which is packaged in a sealed bag, is taken out. The filter element is filled in the filter element cavity in the middle of the filter element frame 7. The activated carbon filter element cavity 73 and the HEPA filter element cavity 74 at both ends of the filter element frame 7 are filled with activated carbon filter element and HEPA filter element, respectively. The filter element frame 7 is inserted into the filter carbon canister 5 as a whole, with the inner end abutting against the limiting bracket 10 inside the filter carbon canister 5. Then, the sealing cap 6 is rotated onto the filter carbon canister 5. The user places the protective hood 1 over their head using the elastic neck collar 2. The elastic neck collar 2 and sealing gasket can seal the neck, preventing toxic fumes from entering the protective hood 1 from the neck and affecting breathing. Rotating the valve cover 9 on the breathing valve body 8 causes the valve cover 9 to open the ventilation valve core 81 inside the valve body via the valve stem, thereby allowing the filter carbon canister 5 to communicate with the outside through the breathing valve body 8 and the ventilation port 91 for breathing. This allows the user to easily open and close the breathing valve body 8 and the filter carbon canister 5 to communicate with the outside, facilitating the rapid use of the self-rescue respirator.

[0036] After prolonged use, the filter element inside the carbon filter canister 5 needs to be replaced. After rotating and opening the sealed canister cover 6, remove the filter element holder 7 and replace it with a new filter element holder 7 and filter element. There is no need to replace the entire respirator or carbon filter canister. This allows the respirator to operate for a longer period of time and reduces operating costs.

[0037] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A replaceable medication self-rescue respirator, comprising a protective hood (1), a head cover (3) integrally formed on the top of the protective hood (1), and a transparent viewing window (4) provided above the front end face of the protective hood (1), characterized in that: The protective headgear (1) has an elastic neck ring (2) integrally formed at the bottom to seal the neck; a filter carbon canister (5) connected to the inside of the protective headgear (1) is installed on the side wall of the front end face of the protective headgear (1); a filter element holder (7) for filling replaceable filter elements is slidably provided inside the filter carbon canister (5); a sealing canister cover (6) is connected to the end of the filter carbon canister (5) by external thread (51); a breathing valve body (8) is installed on the other end of the sealing canister cover (6); a valve cover (9) for opening and closing the valve body is threaded on the breathing valve body (8).

2. The replaceable medication self-rescue respirator according to claim 1, characterized in that: The filter cartridge frame (7) is divided into a central filter cartridge chamber, two ends of activated carbon filter cartridge chamber (73) and HEPA filter cartridge chamber (74) by a filter screen plate (71). An arc-shaped clamping plate (72) is rotatably provided on the filter cartridge filling chamber. Fixing buckles are provided on the outer edges of the activated carbon filter cartridge chamber (73) and HEPA filter cartridge chamber (74).

3. The replaceable medication self-rescue respirator according to claim 1, characterized in that: The filter carbon canister (5) and the sealing canister cover (6) are equipped with a limiting bracket (10) for limiting and fixing the filter element frame (7); smoke filter paper is provided on the limiting bracket (10) at the inner end of the filter carbon canister (5).

4. The replaceable medication self-rescue respirator according to claim 1, characterized in that: The breathing valve body (8) is connected to the filter carbon canister (5). The breathing valve body (8) is provided with a ventilation valve core (81) for opening and closing the valve body. The valve cover (9) is connected to the ventilation valve core (81) through a valve rod. Several ventilation holes (91) are provided on the valve cover (9).

5. The replaceable medication self-rescue respirator according to claim 2, characterized in that: One end of the arc-shaped plate (72) is rotatably connected to the filter element frame (7) via a hinge shaft, and the other end is engaged with the slot on the filter element frame (7).

6. The replaceable medication self-rescue respirator according to claim 1, characterized in that: A sealing gasket is provided on the inner side of the connection between the protective headgear (1) and the elastic tightening neck collar (2).

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