CN219149062U

CN219149062U - Chemical oxygen respirator

Info

Publication number: CN219149062U
Application number: CN202223106858.5U
Authority: CN
Inventors: 周进; 杨小军
Original assignee: Shanghai Fangzhan Fire Technology Co ltd
Current assignee: Shanghai Fangzhan Fire Technology Co ltd
Priority date: 2022-11-22
Filing date: 2022-11-22
Publication date: 2023-06-09
Anticipated expiration: 2032-11-22

Abstract

The utility model discloses a chemical oxygen respirator, which comprises a mask body, a nose mask arranged at the front end of the front surface of the mask body, a three-way valve communicated with the nose mask, a reaction box communicated with the three-way valve, and an air bag communicated with the reaction box, wherein the three-way valve comprises a main pipe, a first branch pipe and a second branch pipe which are arranged on the side wall of the main pipe and are connected and communicated with the main pipe, the top end of the main pipe is connected and communicated with the nose mask, the bottom end of the main pipe is connected and communicated with the top of the reaction box, the first branch pipe and the second branch pipe are both connected and communicated with the air bag, the bottom of the reaction box is connected and communicated with the air bag, a first one-way valve which only allows gas to enter the reaction box from the main pipe is arranged at the joint of the bottom end of the main pipe and the air bag, a second one-way valve which only allows gas to enter the first branch pipe from the air bag is arranged at the joint of the first branch pipe and a third one-way valve which only allows gas to enter the second branch pipe from the air bag is arranged at the joint of the second branch pipe and the air bag.

Description

Chemical oxygen respirator

Technical Field

The utility model relates to the field of fire protection, in particular to a chemical oxygen respirator.

Background

The respirator is a self-contained open air respirator, is widely applied to departments such as fire protection, chemical industry, ships, petroleum, smelting, warehouses, laboratories, mines and the like, and is used for firefighters or rescue workers to safely and effectively extinguish fire, rescue and relief work and rescue work in various environments such as dense smoke, toxic gas, steam or oxygen deficiency and the like. The series of products are provided with a full face mask with wide visual field, brightness and good air tightness, and the air supply device is provided with a novel air supply valve with smaller volume, light weight and stable performance; selecting a high-strength backboard and a high-quality high-pressure gas cylinder with higher safety coefficient; the pressure reducing valve device is provided with a residual gas alarm, and can send out an audible signal to a wearer within a specified gas cylinder pressure range to remind the user to withdraw from the site in time.

In the prior art, although some respirators are provided with an oxygen generating function of converting carbon dioxide into oxygen, because the pipeline communicated with the reaction box is simultaneously used for exhaling carbon dioxide and inhaling oxygen, the exhaling carbon dioxide cannot fully react in the reaction box, so that the exhaling carbon dioxide is inhaled into a user body again, and in severe cases, the breathing difficulty of personnel can be caused.

Disclosure of Invention

The present utility model addresses the above-described deficiencies of the prior art by providing a chemical oxygen respirator.

The technical scheme adopted for solving the technical problems is as follows: the chemical oxygen respirator comprises a mask body, a nose mask arranged at the front end of the front surface of the mask body, a three-way valve communicated with the nose mask, a reaction box communicated with the three-way valve, and an air bag communicated with the reaction box, wherein the three-way valve comprises a main pipe, a first branch pipe and a second branch pipe which are arranged on the side wall of the main pipe and are connected and communicated with the main pipe, the top end of the main pipe is connected and communicated with the nose mask, the bottom end of the main pipe is connected and communicated with the top of the reaction box, the first branch pipe and the second branch pipe are both connected and communicated with the air bag, the bottom of the reaction box is connected and communicated with the air bag, a first one-way valve which only allows gas to enter the reaction box from the main pipe is arranged at the joint of the bottom end of the main pipe and the reaction box, a second one-way valve which only allows gas to enter the first branch pipe from the air bag is arranged at the joint of the first branch pipe and the air bag, and a third one-way valve which only allows gas to enter the second branch pipe from the air bag is arranged at the joint of the first branch pipe and the air bag.

In the chemical oxygen respirator disclosed by the utility model, the first one-way valve is a first circular diaphragm, and a first bracket for stopping the first circular diaphragm is arranged above the first circular diaphragm in the main pipe.

In the chemical oxygen respirator disclosed by the utility model, the first bracket is a multi-rib crossed bracket, and the center of the first bracket is fixedly connected with the center of the first circular membrane.

In the chemical oxygen respirator disclosed by the utility model, the second one-way valve is a second circular diaphragm, and a second bracket is arranged at one side, close to the air bag, of the first branch pipe.

In the chemical oxygen respirator, the second bracket is a cross-shaped bracket, and the center of the second bracket is fixedly connected with the center of the second circular diaphragm.

In the chemical oxygen respirator disclosed by the utility model, the third one-way valve is a third circular diaphragm, and a third bracket is arranged at one side, close to the air bag, in the second branch pipe.

In the chemical oxygen respirator, the third bracket is a cross-shaped bracket, and the center of the third bracket is fixedly connected with the center of the third circular membrane.

The chemical oxygen respirator has the following beneficial effects: when the chemical oxygen respirator is used, in the expiration process of a user, the first one-way valve is opened, the second one-way valve and the third one-way valve are closed, expired air enters the reaction box through the nose cover, the main pipe and the first one-way valve, and fully reacts in the reaction box to produce oxygen, and the oxygen enters the air bag from the bottom of the reaction box. In the inhalation process of the user, the second one-way valve and the third one-way valve are opened, the first one-way valve is closed, and oxygen in the air bag enters the mask body through the first branch pipe, the second one-way valve, the third one-way valve and the nose mask. In this application, through setting up three-way valve, first check valve, second check valve and third check valve, separate user's breathing in and exhaling the passageway for the carbon dioxide gas of exhaling fully reacts in the reaction box, avoids carbon dioxide to be inhaled again, improves respirator safety in utilization.

Drawings

The utility model will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic structural view of a chemical oxygen respirator of the present utility model;

FIG. 2 is a schematic view showing the internal structure of a first branch pipe in the chemical oxygen respirator of the present utility model;

FIG. 3 is a schematic view showing the internal structure of a main tube in the chemical oxygen respirator of the present utility model.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the embodiments of the present utility model will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 3, in the first embodiment of the chemical oxygen respirator of the present utility model, the respirator 1 comprises a mask body 2, a nose mask 3 provided at the front end of the mask body 2, a three-way valve 4 in communication with the nose mask 3, a reaction cassette 8 in communication with the three-way valve 4, and an air bag 9 in communication with the reaction cassette 8, the three-way valve 4 comprises a main pipe 5, a first branch pipe 6 and a second branch pipe 7 provided on the side wall of the main pipe 5 in communication with the main pipe 5, the top end of the main pipe 5 is connected and in communication with the nose mask 3, the bottom end of the main pipe 5 is connected and in communication with the top of the reaction cassette 8, the first branch pipe 6 and the second branch pipe 7 are both connected and in communication with the air bag 9, the bottom of the reaction cassette 8 is connected and in communication with the air bag 9, a first one-way valve allowing only gas from the main pipe 5 to enter the reaction cassette 8 is provided at the junction of the first branch pipe 6 and the air bag 9, and a second one-way valve allowing only gas from the air bag 9 to enter the first branch pipe 6 is provided at the junction of the first branch pipe 7 and the second one-way valve 9 from the third air bag 9.

When the chemical oxygen respirator 1 is used, in the expiration process of a user, the first one-way valve is opened, the second one-way valve and the third one-way valve are closed, expired air enters the reaction box 8 through the nose cover 3, the main pipe 5 and the first one-way valve, and fully reacts in the reaction box 8 to produce oxygen, and the oxygen enters the air bag 9 from the bottom of the reaction box 8. In the inhalation process of the user, the second one-way valve and the third one-way valve are opened, the first one-way valve is closed, and oxygen in the air bag 9 enters the mask body 2 through the first branch pipe 6, the second branch pipe 7, the second one-way valve, the third one-way valve and the nose mask 3. In this application, through setting up three-way valve 4, first check valve, second check valve and third check valve, separate user's breathing in and exhaling the passageway for the carbon dioxide gas of exhaling fully reacts in reaction box 8, avoids carbon dioxide to be inhaled again, improves respirator 1 safety in utilization.

In the present embodiment, the first check valve is a first circular diaphragm 12, and a first bracket 13 for blocking the first circular diaphragm 12 is provided above the first circular diaphragm 12 in the main pipe 5. The first support 13 is a multi-rib cross support, and the center of the first support 13 is fixedly connected with the center of the first circular membrane 12.

During the exhalation process, the first circular membrane 12 is pushed away from the first support 13 under the action of the exhaled air, and the exhaled air can smoothly pass through the first support 13 and the position of the first circular membrane 12. In the suction process, the first circular membrane 12 is adsorbed upwards on the first bracket 13, and the gas in the reaction box 8 cannot be sucked into the main pipe 5.

In the present embodiment, the second check valve is a second circular diaphragm 10, and a second bracket 11 is provided in the first branch pipe 6 on a side close to the air bag 9. The second bracket 11 is a cross-shaped bracket, and the center of the second bracket 11 is fixedly connected with the center of the second circular membrane 10.

Similarly, the third check valve is a third circular membrane, and a third bracket is arranged at one side of the second branch pipe 7 close to the air bag 9. The third support is a cross support, and the center of the third support is fixedly connected with the center of the third circular membrane.

During the inhalation process, the second circular membrane 10 and the third circular membrane are pushed away from the second bracket 11 and the third bracket under the action of inhaled gas, and oxygen in the air bag 9 can enter the main pipe 5 and the nose mask 3 from the positions of the second bracket 11 and the third bracket and the second circular membrane 10 and the third circular membrane. During exhalation, the second circular membrane 10 and the third circular membrane are pushed to the second support 11 and the third support and are adsorbed on the second support 11 and the third support, and the exhaled gas cannot enter the airbag 9.

In addition, in the present utility model, unless explicitly specified and limited otherwise, the terms "connected," "stacked," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims

1. The chemical oxygen respirator is characterized by comprising a mask body, a nose mask arranged at the front end of the mask body, a three-way valve communicated with the nose mask, a reaction box communicated with the three-way valve, and an air bag communicated with the reaction box, wherein the three-way valve comprises a main pipe, a first branch pipe and a second branch pipe which are arranged on the side wall of the main pipe and are connected and communicated with the main pipe, the top end of the main pipe is connected and communicated with the nose mask, the bottom end of the main pipe is connected and communicated with the top of the reaction box, the first branch pipe and the second branch pipe are connected and communicated with the air bag, the bottom of the reaction box is connected and communicated with the air bag, a first one-way valve which only allows gas to enter the reaction box from the main pipe is arranged at the joint of the bottom end of the main pipe and the reaction box, a second one-way valve which only allows gas to enter the first branch pipe from the air bag is arranged at the joint of the air bag, and a third one-way valve which only allows gas to enter the second branch pipe from the air bag is arranged at the joint of the second branch pipe and the air bag.

2. The chemical oxygen respirator of claim 1, wherein the first one-way valve is a first circular diaphragm, and a first bracket for stopping the first circular diaphragm is arranged above the first circular diaphragm in the main pipe.

3. The chemical oxygen respirator of claim 2, wherein the first bracket is a multi-rib cross bracket, and wherein the center of the first bracket is fixedly connected with the center of the first circular membrane.

4. The chemical oxygen respirator of claim 1, wherein the second one-way valve is a second circular diaphragm, and a second bracket is arranged on one side of the first branch pipe, which is close to the air bag.

5. The chemical oxygen respirator of claim 4, wherein the second bracket is a cross-shaped bracket, and the center of the second bracket is fixedly connected with the center of the second circular membrane.

6. The chemical oxygen respirator of claim 1, wherein the third one-way valve is a third circular diaphragm, and a third bracket is arranged on one side of the second branch pipe, which is close to the air bag.

7. The chemical oxygen respirator of claim 6, wherein the third bracket is a cross-shaped bracket, and the center of the third bracket is fixedly connected with the center of the third circular membrane.