Mine air pressure self rescue device is mainly used for coal mine and gas outburst coal mine disaster relief protection.It is installed in the
underground chamber of a coal face or a wind tunnel head position or movement of personnel more locations,
and the valve head, bottom, and transportation, etc. a variety of building ventilation roadway.
According to the regulation of coal mine safety regulations, when a disaster happens in the mine, the staff quickly enters the place which is equipped with a mine wind
pressure self rescue device, opens the device and puts on a breathing mask for self-help. However, the number of underground mine
ventilation self-help devices shall not be less than 1/3 of the total underground staff.
工 作 原 理/Working principle
压风自救装置由管道、开闭阀、连接管、减压组及防护套等5部分组成。 Pneumatic self-help device by the pipeline, on-off valve, connecting tube, decompression group and protective cover composed of five parts.
当煤矿井下发生瓦斯浓度超标或超标征兆时，扳动开闭阀体的手把气路通畅，功能装置迅速完成泄水、过滤、减压和消音等动作后，此时防护套内充满新鲜空气供避灾人员救生呼吸。 When the coal mine gas concentration exceeded or exceeded signs, the opening and closing the valve body to open the gas path, the device quickly to complete the discharge, filtration, decompression and silencing and other actions, this time the protective cover filled with fresh air For the evacuation of life-saving breathing.
防护套内的空气压力为0.05~0.1Mpa防护套外有毒气体的压力低于套内压力，因此外部有害气体不会进入防护套内对避灾人员造成危害。 The air pressure in the protective cover is 0.05 ~ 0.1Mpa The pressure of the toxic gas outside the protective cover is lower than the pressure inside the casing, so the external harmful gas will not enter the protective cover to cause harm to the evacuees.