Regarding the classification of particulate matter (dust), protection principles and protection of particulate matter (dust), we tweeted in the last issue of "Personal Protective Equipment Respiratory Protection Supplies" introduced. Today, we mainly introduce anti-gas masks/masks. In addition, dust masks/masks (suitable for dust and powdery chemicals such as sodium carbonate, sodium bicarbonate, etc.) and how to wear protective masks (3M information).
Gas masks/masks are special labor protection products for protecting the respiratory system of personnel. It is composed of the main body of the mask. The main body of the mask isolates the air and acts as a seal; the canister of the poison box plays the role of filtering poisonous gas and dust. It is mainly used in working environments with low concentrations of harmful gases and dust. Anti-virus masks/masks are widely used in petroleum, chemical industry, mining, metallurgy, military, fire protection, emergency rescue, sanitation and epidemic prevention, science and technology environmental protection and other fields.
1. The principle of anti-virus.
(1) Air filter masks/masks.
Air filter masks or filter masks work by passing air containing harmful substances through the filter material of the mask , and then inhaled. The structure of the filter mask is divided into two parts, one part is the main body of the mask, and the other part is the filter material, including the dust mask and the anti-toxic chemical filter box.
(2) Air supply mask/dust mask.
Air supply masks/Dust masks refer to air compressors, compressed gas cylinders And other devices, the clean air source isolated from harmful substances is sent to the human face for breathing.
2. Applicable environment.
Gas masks/Dust masks are the guarantee of life in industry and special times. It is the guardian of human survival and health. Mainly used in working environments with low concentrations of harmful gases and vapors. The sorbent or sorbent is only installed in the filter box. Some filter boxes are also equipped with a filter layer, which can also prevent aerosols. Some military gas masks are mainly made of activated carbon cloth, or the outer layer is waterproof and oil-resistant fabric, the inner layer is glass fiber filter material, and the bottom layer is polyurethane foam soaked in activated carbon, which can provide temporary protection in the event of a sudden poisonous gas attack.
The gas mask/dust mask is a bionic creation inspired by wild boars on the battlefield after a world war. At that time, chemical weapons were used, but after the war, it was found that the wild boar was not poisoned, so the shape of the wild boar's nose was imitated, and gas masks and gas masks were made. Anti-virus masks/dust masks refer to masks/masks that can prevent dust, prevent viruses, and filter harmful substances.
We can classify the types of gas masks according to their shape, place of use and composition.
Respirators can be divided into flat respirators, cup respirators, valve respirators and folding respirators according to their shape . This mask is mainly used in places with low and low toxicity of normal air pressure and air circulation.
Mask gas mask, half mask gas mask, single tank gas mask, double tank gas mask, isolation gas gas mask. This kind of gas mask is mainly used in the environment with high density and strong toxicity.