空气过滤阀 安保防卫用品 塑料呼吸阀 厂家生产口罩呼吸阀 面罩呼吸阀

呼吸阀作用原理：当在呼气时排出的气体的正压可以将阀门吹开，以迅速将体内的废 除，这样就可以降低使用口罩时的闷热感，而在吸气的时候，负压会自动将阀门关闭，这样就可以避免外 界的污染物通过呼吸阀进入人体呼吸系统，对人体造成伤害。

The working principle of the breathing valve: When the positive pressure of the gas discharged during exhalation can blow the valve open to quickly remove the exhaust gas from the body, this can reduce the stuffy feeling when using a mask, and when inhaling, the negative pressure The valve will be closed automatically, so that the external pollutants can be prevented from entering the human respiratory system through the breathing valve and causing harm to the human body.