What is a gas mask? Choice of gas mask

Respirator mask is a special labor protection product for protecting the human respiratory system. Subject composition. The main body of the mask isolates air and acts as a seal. Filter box The filter tank plays the role of filtering poisonous gas and dust. It is mainly used in working environments with low concentrations of harmful gases and dust. Respirators are widely used in petroleum, chemical industry, mining, metallurgy, military, fire protection, emergency rescue, sanitation and epidemic prevention, scientific and technological environmental protection and other fields.

Gas masks There are many kinds, generally divided into two categories according to the structure and working principle: air Filtering masks and supplied air masks.

Air Filter Mask

The principle of operation is that the air containing harmful substances evolves through the filter and is inhaled. The structure is divided into two parts. One is the main body of the mask, and the other is the filter material part, including dust-proof filter cotton, anti-virus chemical filter box, etc.

Air supply mask

Refers to a source of clean air that is isolated from harmful substances, and the management and masks are sent to people's faces through air compressors, compressed gas cylinder devices, etc., so that they can breathe.

Use electrostatic filters and activated carbon to remove the odor layer, gas masks are used to protect dust and organic odors, petrochemical, chemical, metal Smelting and processing manufacturing are also used by some special forces. The electrostatic filter (exceeding NIOSH requirements) has small breathing resistance, removes the odor layer, and feels fresh air.

Gas masks are the guarantee of our country’s industry and life in special times. It is the guardian of our human survival and health. Mainly used in working environments with low concentrations of harmful gases and vapors. There is only sorbent or inhalant in the filter cartridge. Some aerosol boxes also contain a filter layer, which can prevent viruses at the same time. Some military gas masks are mainly made of activated carbon cloth, or with water and oil resistant fabric as the outer layer, glass fiber filter material as the inner layer, and activated carbon soaked polyurethane foam as the bottom layer. Provides temporary protection.

Respiratory masks A work of biomimicry, inspired by wild boars on the battlefield after a war. At that time, chemical weapons were used, but after the war it was found that wild boars were not poisoned, so gas masks and gas masks were made in the shape of wild boar noses.

There are 3 principles for choosing a gas mask:

1. Dustproof efficiency. Take the barrier efficiency of fine dust (especially respirable dust below 5 microns) as the standard. Dust of this particle size can directly enter the alveoli, so it has a greater impact on human health.

2. The tightness with the shape of the face. Air is like water flow, if the resistance is small, where will it flow first. When the shape does not conform to the face, it will leak out from the loose place like a dangerous product in the air and enter the human respiratory system. That's the best thing to do. Health cannot be guaranteed.

3. Dress comfortably. The breathing resistance should be small, the weight should be light, the clothes should be hygienic, and the management should be convenient. In this way, workers will be happy to keep wearing them on the workshop and improve work efficiency.