Self-priming filter dustproof N95 mask for coal mine AQ1114-2014 Self-priming filter coal mine copper mask
, English name: self-inhibiting filter coal mine dust mask, this standard specifies the classification and grade of self-priming filter coal mine dust copper mask , Signs, technical requirements, test methods, inspection rules, signs and instructions, packaging and storage, scope of application and other requirements. 'Self-absorption filter dust mask for coal mines' AQ1114-2014 specification is applicable to the dust copper mask industry for the prevention and control of respirable coal dust and silica dust in coal mines. It is not suitable for respiratory personal protective equipment used in hypoxic environment and toxic gas environment. Note: AQ1114-2014 self-priming filter dust copper mask for coal mines is a mandatory recommended conversion, issued on December 15, 2009 by the General Administration of Quality Supervision, Inspection and Quarantine of the People’s Republic of China and the State Administration of Standardization of the People’s Republic of China, and implemented on October 1, 2010 Most of the self-absorption filtering dust masks used in coal mines are KN90 masks, and the efficiency of filtering dust is about 90%. However, because KN90 masks mostly focus on the protection efficiency of the filter cotton material and ignore the tightness between the mask and the face, the leakage rate is much higher than 5%. The filtration efficiency of KN95 copper mask and N95 mask is 95%, which basically completely eliminates dust Harm to the human body. In summary, coal mine self-priming filter dust masks should choose N95 dust masks. When choosing self-priming filter dust masks for coal mines, a reliable and appropriate dust mask should also be selected according to the characteristics, concentration and particle size of harmful dust, smoke and gas in the workplace. When the dust concentration is high and the dust particle size is small, dust masks should be selected. The filter material of the dust mask is specially treated filter cotton, which can filter 95% of the dust in the air. For dust particles with a particle size of 3 microns or more, the dust blocking efficiency can reach more than 99%. At present, most of the dust mask bodies on the market are made of rubber. We all know that rubber materials are hard and easy to age. Therefore, the best material for the body of the dust mask is high-grade silica gel, which is non-toxic, odorless, high temperature resistant, and oxidation resistant. At the same time, the silicone material has very good skin-friendliness, can perfectly fit the face, and prevent dust from being inhaled through the edge of the copper mask body. Therefore, coal mine dust masks should be made of high-grade silicone materials.
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