Dust masks are essential protective equipment for workers engaged in and exposed to dust. Mainly used in working environment containing low concentration of harmful gas and steam. Only adsorbent or sorbent is installed in the filter box. Some filter boxes are also equipped with a filter layer to prevent aerosols at the same time. Some military gas masks are mainly made of activated carbon cloth, or use water- and oil-resistant fabric as the outer layer, glass fiber filter material as the inner layer, and activated carbon-impregnated polyurethane foam as the bottom layer, which can provide temporary protection in the event of a sudden attack by poisonous gas. Protection.
1. Disposable dust mask: a non-removable half-mask mainly composed of filter material, with or without an exhalation valve. Generally, it cannot be cleaned and reused. Any component that fails should be discarded.
2. Replaceable half-mask type dust respirator: a close-fitting type mask with single or multiple replaceable filter elements, with or without breathing valve, with or without breathing tube. According to whether it can be dismantled, it can be divided into two categories: non-dismantling and dismantling. According to the coverage area, it can be divided into two categories: one-half mask and one-half mask
3. Full-face mask: a close-fitting mask that can cover the mouth, nose, eyes and jaw. A full-face air-supplied mask refers to a clean air source isolated from harmful substances, which is sent to the face of a person for breathing through a tube and a face mask through a power action such as an air compressor, a compressed gas cylinder device, etc.