Pressure-controllable respirator

Abstract

The invention relates to a pressure-controllable respirator, and belongs to the technical field of coal mine and fire rescue and escape. The problems that in the prior art, a respirator is large in size, inconvenient to carry and use and high in breathing temperature, the product effectiveness cannot be judged, and an oxygen generation agent is wasted are solved. The pressure-controllable respirator comprises a mouth and nose mask, a breathing pipe, an oxygen generating part, an air bag (4), an upper cover (5) and a pressure relief device (7), wherein the oxygen generating part comprises an oxygen generating tank (31), a three-way unit (32) and an initial oxygen generating device (33); and one end of the breathing pipe (2) is connected with the mouth and nose mask (1), the other end of thebreathing pipe (2) is connected with the oxygen generating tank (31), the air bag (4) is connected with the oxygen generating tank (31), and the upper cover (5) covers the oxygen generating part (3).According to the respirator, by arranging the pressure relief device, the internal pressure of the air bag is adjusted, the three-way unit divides oxygen, and the interior of the oxygen generating tank is visual and capable of dissipating heat, so that the effects of saving the oxygen generation agent, reducing the weight and size, reducing the oxygen generation temperature and being convenient to use and carry and high in safety are achieved.

Description

technical field [0001] The invention relates to the technical fields of coal mine and fire rescue and escape, in particular to a pressure-controllable respirator. Background technique [0002] The chemical oxygen respirator is based on the oxygen generator with superoxide as the main component and CO 2 、H 2 It is developed on the principle of O reaction to generate fresh air for breathing. Its use is not limited by the gas composition of the surrounding atmosphere. It is an ideal emergency escape self-rescuer. Chemical oxygen respirators are usually composed of oxygen tanks, air storage bags, mouth and nose masks (or bites), etc. The low-oxygen-concentration air exhaled by the human body enters the oxygen-producing tank through the breathing pipeline, and becomes high-oxygen-concentration air after reacting with the oxygen-generating agent, and then enters the air storage bag for the human body to breathe. Since both water vapor and carbon dioxide participate in the reacti...

AI Technical Summary

Problems solved by technology

[0004] In view of the above analysis, the embodiment of the present invention aims to provide a pressure-controllable respirator to solve the problem of large volume, inconvenient carrying and use, high breathing temperature, inability to judge product effectiveness and waste of oxygen-generating agent in existing respirators. The problem

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