What's the hottest recently? Presumably, anti-haze masks are the hottest in the recent smog. To what extent? A citizen recounted his experience: In order to buy a pair of anti-smog masks and breathing valves, he ran three pharmacies in a row, but they were all told that they were out of stock. When I was in the pharmacy, I found that people who bought the anti-smog mask breathing valve lined up. I heard that the price will increase the next day. So what are the functions of the anti-smog mask breathing valve? Anti-smog copper mask
breathing valve function : In a hot and humid working environment, poor ventilation or heavy labor, using an anti-smog mask with a breathing valve can help you feel more comfortable when you exhale. The working principle of the breathing valve of the anti-haze mask is that when exhaling, the positive pressure of the exhaust gas blows open the valve to quickly remove exhaust gas from the body and reduce the sultry feeling when using the anti-haze mask. The negative pressure during inhalation will automatically reduce The valve is closed to avoid sucking in pollutants from the outside environment. It can be seen that the anti-haze masks with breathing valves are more suitable for harsher use environments and are more beneficial to human breathing. An anti-haze mask with an exhalation valve can quickly expel the exhaled hot and humid air out of the mask. For a mask without an exhalation valve, the exhaled hot and humid air has to go out of the filter cotton, which will easily wet the filter cotton, causing bacteria to multiply and increase breathing resistance, which is not effective. In order to ensure the protective effect, it is recommended to buy anti-smog masks certified by GB. Some so-called experts say that good masks cannot breathe well, which is an old calendar. The current dust-proof mask adopts the principle of electrostatic adsorption, which can prevent ultra-fine dust, and has a high dust-holding degree, and breathing is smooth. It can be worn by the elderly including heart disease and the elderly. Anti-smog masks Masks with an exhalation valve, such as N95 breathing valve activated carbon masks, conform to the N95 mask standard. Anti-smog masks with breathing valves are more suitable for harsher use environments and are more beneficial to human breathing. In hot and humid working environments, poor ventilation or heavy labor, the use of activated carbon masks with breathing valves can help you feel more comfortable when you breathe out. The principle of the breathing valve of the anti-smog mask is that the positive pressure of the exhaust gas blows open the valve plate during exhalation to quickly eliminate the exhaust gas from the body and reduce the sultry feeling when using the . The negative pressure during inhalation will automatically reduce The valve is closed to avoid sucking in pollutants from the outside environment. The exhalation valve of mask has the function of quickly expelling hot and humid air. Wearing a PM2.5 mask breathing valve means that a large amount of hot and humid air is exhaled. If there is no exhalation valve, most of it is discharged through the filter cotton. Because the outside air is cold, the hot and humid air will condense into water droplets, which will quickly wet the PM2.5 mask. , Resulting in decreased protective effect and increased respiratory resistance. Therefore, it is better to have an exhalation valve. To protect against smog, it is more scientific to choose protective masks. Through the following methods, scientific selection of qualified anti-haze masks can help prevent haze damage. 1. Dust masks must be certified by GB2626-2006. Even foreign ones are no exception. 2. Anti-fog masks are made of silicone, plastic, etc. The silicone material is relatively soft and comfortable, with low pressure sensitivity. 3. Dust masks (protection against: dust, smoke, fog, microorganisms) have three levels of protection: KN100, KN95 and KN90. Under high dust, ultra-fine dust and haze, it is recommended to choose KN95, KN100. 4. Face masks are purchased according to the size of the national standard and according to the wearer's head shape. 5. There are 2 types of face masks covering the mouth and nose and covering the nose and mouth, and the chin. The second type has a large contact mask, better fit, and low pressure sensitivity. 6. Choose the one with low breathing resistance. Dust masks with high breathing resistance can easily cause damage to the lung diaphragm. 399
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