Gas mask with filtering structure convenient to replace

Abstract

The utility model relates to the technical field of gas masks, in particular to a gas mask with a filtering structure convenient to replace, which comprises a protective mask, one side of the protective mask is communicated with two dismounting assemblies, one side of each dismounting assembly is provided with a filtering assembly, and the bottom of one side of the protective mask is communicated with a one-way exhaust valve. A group of first fixing rods and a group of second fixing rods are symmetrically mounted on one side of the protective mask, a first telescopic binding band is fixed between the two first fixing rods, a second telescopic binding band is fixed between the two second fixing rods, and a limiting band is connected between the first telescopic binding band and the second telescopic binding band. According to the gas mask, a user can conveniently and rapidly take down the air filtering box, the user can conveniently and rapidly replace the filtering assembly in an emergency through the gas mask, the time needed for replacing the filtering assembly is shortened, the protection effect is improved, and meanwhile the exposure risk is reduced.

Description

Technical Field

[0001] This utility model relates to the field of gas mask technology, specifically a gas mask with an easy-to-replace filter structure. Background Technology

[0002] A gas mask is a personal protective equipment that protects the respiratory organs, eyes, and face. It defends against harmful substances such as toxic gases, dust, and biological warfare agents through filtration or isolation mechanisms. Types include full-face masks and half-face masks.

[0003] Currently available gas masks generally suffer from low efficiency in replacing filter components. Traditional knob-type structures are cumbersome to operate and take a long time to replace, which is particularly prominent in emergency operation scenarios, affecting both the continuity of protection and increasing the risk of exposure.

[0004] Therefore, a gas mask with an easily replaceable filter structure is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a gas mask with an easy-to-replace filter structure to solve the problems mentioned in the background art. To achieve the above objective, this utility model provides the following technical solution: A gas mask with an easy-to-replace filter structure, including a protective face mask. Two disassembly and assembly components are connected to one side of the protective face mask. A filter component is installed on one side of the disassembly and assembly components. A one-way exhaust valve is connected to the bottom of one side of the protective face mask. A set of first fixing rods and second fixing rods are symmetrically installed on one side of the protective face mask. A first telescopic strap is fixed between the two first fixing rods. A second telescopic strap is fixed between the two second fixing rods. A limit strap is connected between the first telescopic strap and the second telescopic strap.

[0006] Preferably, the disassembly assembly includes a second ventilation tube fixed to one side of the protective mask, and a rubber sealing plate is installed inside the second ventilation tube via a first spring compression rod.

[0007] Preferably, a limiting hole is provided on each side of the second ventilation tube, and a protective sleeve is fixedly fitted on the outer side of the second ventilation tube.

[0008] Preferably, a second spring compression rod is slidably sleeved on both sides of the protective cylinder, and a pressing plate and a push plate are welded to both sides of the second spring compression rod.

[0009] Preferably, the filter assembly includes an air filter box, and one side of the air filter box is connected to a first ventilation tube.

[0010] Preferably, an elastic telescopic limiting block is slidably installed on each side of the first ventilation tube, and the two elastic telescopic limiting blocks are used in conjunction with the limiting hole.

[0011] Preferably, a slot is provided on one side of the second ventilation tube, and the inner wall of the slot is sealed to the outer wall of the first ventilation tube.

[0012] Preferably, a vent hole is provided on one side of the rubber sealing plate, and one side of the rubber sealing plate is sealed to one side of the first vent tube.

[0013] Compared with the prior art, this utility model provides a gas mask with an easy-to-replace filter structure, which has the following beneficial effects:

[0014] When installing the filter assembly, insert the first ventilation tube, which is connected to one end of the air filter box, into the slot. As the first ventilation tube goes deeper, the elastic telescopic limiting block rebounds and inserts into the slot, thus fixing the first ventilation tube inside. To remove it, the user can use two fingers to press the pressing plates installed on both sides of the protective cylinder simultaneously, causing the elastic telescopic limiting block to disengage from the limiting hole. The compressed first spring compression rod will rebound, pushing the first ventilation tube out of the slot, allowing the user to quickly remove the air filter box. This gas mask allows users to quickly replace the filter assembly in emergencies, shortening the time required for filter assembly replacement, improving the protective effect while reducing the risk of exposure. Attached Figure Description

[0015] Figure 1 This is a side view of the main body of the present utility model.

[0016] Figure 2 This is a front view structural diagram of the present utility model;

[0017] Figure 3 This is a schematic diagram of the installation structure of the disassembly and assembly components and the filter components of this utility model;

[0018] Figure 4 This is a top view of the structure of this utility model;

[0019] Figure 5 This utility model Figure 3 Enlarged structural diagram at point A;

[0020] Figure 6 This is a schematic diagram of the internal structure of the second ventilation cannula of this utility model.

[0021] In the diagram: 1. Protective face mask; 2. First fixing rod; 3. First telescopic strap; 4. Limiting strap; 5. Second telescopic strap; 6. Second fixing rod; 7. Filter assembly; 701. Air filter box; 702. First ventilation tube; 703. Elastic telescopic limiting block; 8. Assembly / disassembly assembly; 801. Second ventilation tube; 802. Rubber sealing plate; 803. First spring compression rod; 804. Limiting hole; 805. Slot; 806. Protective cylinder; 807. Pressing plate; 808. Push plate; 809. Second spring compression rod; 9. One-way exhaust valve. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1: See Figure 1 — Figure 6 A gas mask with an easily replaceable filter structure includes a protective face mask 1. Two disassembly and assembly components 8 are connected to one side of the protective face mask 1. A filter assembly 7 is installed on one side of the disassembly and assembly components 8. A one-way exhaust valve 9 is connected to the bottom of one side of the protective face mask 1. A set of first fixing rods 2 and second fixing rods 6 are symmetrically installed on one side of the protective face mask 1. A first telescopic strap 3 is fixed between the two first fixing rods 2. A second telescopic strap 5 is fixed between the two second fixing rods 6. A limit strap 4 is connected between the first telescopic strap 3 and the second telescopic strap 5.

[0024] The assembly 8 includes a second ventilation tube 801 fixed to one side of the protective mask 1, and a rubber sealing plate 802 is installed inside the second ventilation tube 801 via a first spring compression rod 803.

[0025] A limiting hole 804 is provided on each side of the second ventilation tube 801, and a protective sleeve 806 is fixedly sleeved on the outer side of the second ventilation tube 801.

[0026] A second spring compression rod 809 is slidably sleeved on both sides of the protective cylinder 806, and a pressing plate 807 and a push plate 808 are welded to both sides of the second spring compression rod 809.

[0027] The filter assembly 7 includes an air filter box 701, and a first ventilation tube 702 is connected to one side of the air filter box 701.

[0028] An elastic telescopic limiting block 703 is slidably installed on each side of the first ventilation tube 702, and the two elastic telescopic limiting blocks 703 are used in conjunction with the limiting hole 804.

[0029] A slot 805 is provided on one side of the second ventilation tube 801, and the inner wall of the slot 805 is sealed to the outer wall of the first ventilation tube 702.

[0030] A vent hole is provided on one side of the rubber sealing plate 802, and one side of the rubber sealing plate 802 is sealed to one side of the first vent tube 702.

[0031] Specifically, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, when installing the filter assembly 7, the first vent tube 702, which is connected to one end of the air filter box 701, is inserted into the slot 805. As the first vent tube 702 is inserted deeper into the slot 805, one end of the first vent tube 702 will make sealing contact with one side of the rubber sealing plate 802. As the first vent tube 702 continues to go deeper, it will compress the first spring compression rod 803 installed on one side of the rubber sealing plate 802, thereby causing the elastic telescopic limiting blocks 703 installed on both sides of the first vent tube 702 to... The compression of the inner wall of the second ventilation tube 801 causes the elastic telescopic limiting block 703 to retract into the first ventilation tube 702. When one side of the elastic telescopic limiting block 703 moves to the limiting hole 804, the pressure on that side of the elastic telescopic limiting block 703 disappears, causing it to rebound and insert into the interior of 704, thus fixing the first ventilation tube 702 inside the slot 805. Simultaneously, one end of the first ventilation tube 702 continuously presses against one side of the rubber sealing plate 802, thus sealing it with the rubber... The sealing plate 802 is sealed on one side, allowing air filtered through the air filter box 701 to enter the protective mask 1 for safe breathing. For removal, the user can simultaneously press the pressing plates 807 installed on both sides of the protective cylinder 806 with two fingers. When the pressing plates 807 are pressed, the second spring compression rod 809 causes the push plate 808 to insert into the limiting hole 804. Once the push plate 808 is inside the limiting hole 804, it presses the elastic telescopic limiting block 703 into the first ventilation tube 702. This causes the elastic telescopic limiting block 703 to disengage from the limiting hole 804. At this time, the compressed first spring compression rod 803 will rebound, thereby pushing out the first ventilation tube 702 inside the slot 805, making it convenient for the user to quickly remove the air filter box 701. Then, repeating the above operation allows for the quick installation of the new filter assembly 7. This gas mask allows users to quickly replace the filter assembly 7 in emergencies, shortening the time required to replace the filter assembly 7, improving the protective effect while reducing the risk of exposure.

[0032] Working principle: In use, the protective mask 1 is placed over the user's mouth and nose. When wearing it, the second telescopic strap 5 passes under the user's head, and then the first telescopic strap 3 and the second telescopic strap 5 are used to secure the mask to the upper and lower sides of the back of the user's head. The limiting strap 4 prevents the first and second telescopic straps 3 and 5 from slipping off the back of the user's head during wear, thus preventing the mask from falling off. Next, the filter assembly 7 is installed. When installing the filter assembly 7, the first ventilation tube 702, connected to one end of the air filter box 701, is inserted into the slot 805. As the first ventilation tube 702 is inserted deeper into the slot 805... At a certain depth, one end of the first ventilation tube 702 will make sealing contact with one side of the rubber sealing plate 802. As one end of the first ventilation tube 702 continues to penetrate deeper, it will compress the first spring compression rod 803 installed on one side of the rubber sealing plate 802. This will cause the elastic telescopic limiting blocks 703 installed on both sides of the first ventilation tube 702 to be compressed by the inner wall of the second ventilation tube 801, thereby causing the elastic telescopic limiting blocks 703 to be housed inside the first ventilation tube 702. When one side of the elastic telescopic limiting block 703 moves to the limiting hole 804 side, the pressure on that side of the elastic telescopic limiting block 703 disappears, causing the elastic telescopic limiting block 703 to rebound. Inserted into 704, the first ventilation tube 702 is fixed inside the slot 805. Simultaneously, one end of the first ventilation tube 702 continuously presses against one side of the rubber sealing plate 802, creating a sealed connection. This allows air filtered through the air filter box 701 to enter the protective mask 1 for safe breathing. For removal, the user can simultaneously press the pressing plates 807 on both sides of the protective cylinder 806 with two fingers. When the pressing plates 807 are pressed, the second spring compression rod 809 causes the push plate 808 to insert into the limiting hole 804. When the push plate 808 enters the limiting hole... After the elastic telescopic limiting block 703 is pressed into the first ventilation tube 702 inside the hole 804, the elastic telescopic limiting block 703 is disengaged from the limiting hole 804. At this time, the compressed first spring compression rod 803 will rebound, thereby pushing out the first ventilation tube 702 inside the slot 805, making it convenient for the user to quickly remove the air filter box 701. Then, the above operation can be repeated to quickly install the new filter assembly 7. This gas mask allows users to quickly replace the filter assembly 7 in emergency situations, shortening the time required to replace the filter assembly 7, improving the protection effect while reducing the risk of exposure.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

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