Air respirator working time is generally 30 ~ 360min, depending on the type of respirator, the maximum limit of protection time is different. In general, air respirator protection is slightly shorter than oxygen respirator.
Air respirator is mainly used by fire-fighting staff and related personnel to carry out fire source reconnaissance, fire extinguishing, disaster relief, rescue and support in dealing with fire, hazardous material leakage, smoke, and oxygen deficiency. In addition, it can also be used in heavy industries, shipping, civil aviation, water plants and sewage treatment stations, oil and gas exploration and extraction, petrochemical industry, petroleum refining, chemical products, environmental protection, military and other fields and occasions.
3: Oxygen breathing apparatus
Also known as the oxygen-type gas mask, it is a closed-circuit respirator that uses the carbon dioxide and water vapor in the exhaled breath of the personnel and the oxygen generating agent containing a large amount of oxygen to reflect the generation of oxygen, so that the expired gas is supplied with oxygen and purified to provide personnel with a closed-circuit respirator. .
The oxygen-containing respirator is organized into an oxygen generating system (including an oxygen generating tank, a starting device and an emergency device), a cooling system (including a cooling pipe and a cooling humidifier), a gas storage device (including a storage bag and an exhaust valve), and protection. Foreign passengers and backs. Among them, the oxygen generator in the oxygen generation system is an important part of the mask. It contains oxygen generators such as super-potassium oxide, super-sodium peroxide, potassium peroxide, or sodium peroxide. These alkaline oxides can interact with carbon dioxide and oxygen. effect. Due to oxygen generation and chemical reaction to remove carbon dioxide, the temperature of the passing gas stream may be too high, so a cooling device is required to cool the gas stream for the personnel to breathe.
When in use, the exhaled gas enters the balloon through the breather valve and airway tube and enters the oxygen in the exhaust gas of the oxygen tank and reacts with the oxygen generating agent to generate oxygen. The purified and supplemental oxygen gas flows into the airbag for the user to breathe.
Oxygen breathing apparatus work time is generally 30 ~ 60min, shorter than oxygen breathing apparatus and air breathing apparatus.
The application occasions of oxygen breathing apparatus include: fire protection, mine rescue, and gas leakage accident treatment.
Other types of respiratory protection products
4: Emergency escape breathing apparatus
This type of respiratory protective equipment is designed for emergency escape, including special fire escape masks and isolated escape ventilators that can be used in various critical situations.
Fire escape masks are filter-type respiratory protection products that, in addition to filtering dust, aerosols, and general harmful gas vapors, also have the function of filtering out carbon monoxide.
Isolated escape respirators are similar, but there are some differences in design and protection time. According to the purpose of the use of this type of respirator, in order to reduce the weight of equipment, reduce the physical strength of the escapee in the escape process, easy to carry, wear, increase their chances of rescue and possible, these respirator has the following characteristics; a. Light and easy to wear; b. Effective use time is generally 10 ~ 15min, to ensure adequate escape time, while the weight of the equipment is lighter; c. Visual effects, bright colors or with a fluorescent light-emitting material, easy to be Find.
Long tube respirator-Dongtai Well Safety Equipment Co., Ltd. specializes in producing
The most prominent feature is that it has a long air duct (50~90m), which can be used in conjunction with mobile air supply, mobile air purification stations, etc., mainly using compressed air steel tubes as the air source, and some using filtered air as the air source. .
Long tube respirators are particularly suitable for long-term use in complex fire rescue and a wide range of chemical, biochemical and industrial pollution environments. Typical application environments include the elimination of asbestos and other hazardous materials, nuclear processing and nuclear removal, and the stripping and spraying of isocyanate coatings.
Powered air respirator
This type of respiratory protection product mainly uses the principle of combining power supply with air filtration to provide users with air supply. The advantage of powered air supply is that it can reduce respiratory resistance, and at the same time it can form a certain positive pressure in the mask to improve the comfort of use and the safety of protection. Children's masks, wounded masks and masks used on the plateau generally belong to this type of mask.
The main application fields and occasions for this type of mask include: spraying pesticides in vehicle maintenance factories, welding work in shipyards, grinding of metal materials, etc. In addition, there are also applications in military and civil protection.
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