当煤矿井下发生事故或出现有害气体造成工作人员不能正常呼吸
时，工作人员可就近进入自救装置处避灾，通过该自救装置输送
的新鲜空气，使避灾人员能长时间呼吸轻松，达到安全避灾、稳
定工作情绪的目的。一般情况下井下安装自救装置的个数不得少
于井下全员的三分之一。
ZYJ-M型矿井压风自救装置具有对压风气体进行减压、消
声、流量调节、过滤油水等功能，具有安装方便、美观大方、使
用寿命长、噪音低、空气清新卫生等特点。
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