逆止阀是矿井排水必不可少的部件。我矿是一个井下开采的硫铁矿。矿井深度为131m,离河道只有几十米,井底与河床高差120多米。我们是采用口径为150mm 的耐酸泵进行排水,矿水量很大,四季日排水量为1万m~3以上。由于矿水腐蚀性大,加上压力大,往往更换一个新的逆止阀,不到一个星期,里面的零件很快就被腐蚀、磨损,造成阀片与阀杆,阀杆与 Check valve is an essential part of mine drainage. Mine is a mine pyrite mine. Mine depth of 131m, only tens of meters away from the river, bottom and river bed height difference of more than 120 meters. We are using a 150mm diameter acid pump for drainage, a large amount of water, the seasons on the displacement of 10,000 m3 ~ 3 above. Due to the corrosion of mineral water, coupled with pressure, often replace a new check valve, less than a week, the parts inside quickly corroded, worn, resulting in the valve stem and stem, stem and