There are many kinds of classification methods of masks. Generally, according to their structure and working principle, they are divided into two categories: air filter masks and air supply masks
the working principle of the air filter mask, or filter mask for short, is to make the air containing harmful substances filtered through the filter material of the mask and then inhaled
air supply respirator is a kind of clean air source which is isolated from harmful substances and sent to human face for breathing by power, such as air compressor, compressed gas cylinder device, etc
filter masks are the most widely used in our daily work. The selection methods and use conditions of these masks are described in detail below. The structure of a filter mask should be divided into two parts. One is the main body of the mask, which can be simply understood as a shelf of the mask; The other is the filter material part, including the filter cotton used for dust prevention and the chemical filter box used for anti-virus. Therefore, for the selection and use of filter masks, some of the products produced by Guangjia provide you with the following convenience, that is, you can use the same kind of mask body. When you need to prevent dust in the dust working environment, you can wear a dust mask with the corresponding filter cotton; When you need to carry out anti-virus in a toxic environment, replace the filter cotton and install the corresponding chemical filter box, so that it becomes an anti-virus mask again, or provide you with more combinations according to your work needs
to breathe healthily, you need an activated carbon mask
first, in the congested streets of the city, the diffuse automobile exhaust suffocates you, so you need an activated carbon mask
Second, in the crowded bus, breathing the air full of bacteria, you need an activated carbon mask
Third, when working in a newly decorated office building, it is full of formaldehyde, benzene and other toxic gases. You need an activated carbon anti-virus mask to protect you< 4. Patients with respiratory diseases are more sensitive to air pollution. Activated carbon masks can improve the protection ability, which is conducive to the recovery of diseases
5. When you move to a newly decorated house, you can’t resist the pungent smell of formaldehyde. You need an activated carbon mask< 1ts main characteristics are as follows:
1. 1t has the functions of anti-virus, deodorization, bacteria filtration and dust resistance