水泵停止排水时,排水管中的水因逆止阀漏水而回流,降低了排水效率。如逆止阀漏水严重,水泵因故突然停止运转或未关闭闸阀停泵时,排水管中的高压水回流而损坏水泵,导致事故发生。结合工作实际,对逆止阀使用寿命进行原因分析,研发了给排水系统安全运行提供保障的通用自锁锥形逆止阀。结果表明:通用自锁锥形逆止阀的应用,避免了因逆止阀介质泄漏、回流损坏机械设备的安全隐患,并取得了实用新型专利。 When the pump stops draining, the water in the drain pipe is reflowed due to the leakage of the check valve, reducing the drainage efficiency. If the check valve leaks seriously, the pump suddenly stops operating due to an accident or does not close the gate valve to stop the pump, the high pressure water in the drain pipe back to damage the pump, resulting in an accident. Combined with the actual work, the reasons for the life of the check valve were analyzed, and a universal self-locking cone check valve was provided to ensure the safe operation of the water supply and drainage system. The results show that the application of the universal self-locking cone check valve avoids the potential safety hazard caused by the medium leakage of the check valve and the return flow damage to the mechanical equipment, and has obtained the utility model patent.