我矿生产供水系统的一台150JD—S6×11深井水泵,在运行中突然出现泵轴上下窜动、电动机剧烈振动现象。为准确找到故障原因,避免检修的盲目性,对水泵进行了如下试探。把故障水泵停止两小时后再起动,水泵工作正常。出水压力3×10~5Pa(压力表读数)。水泵工作5小时左右,泵轴开始窜动,电动机剧烈振动,立即停机,略作检查后,再次启动,在刚开动后,泵轴不窜动,随着出水压力增高,当压力 I mine a water supply system 150JD-S6 × 11 deep well pump suddenly appeared in the operation of the pump shaft up and down, the motor vibration phenomenon. To accurately find the cause of the malfunction, to avoid the blindness of overhauling, the pump was tested as follows. The fault pump stopped two hours after the start, the pump is working properly. Water pressure 3 × 10 ~ 5Pa (pressure gauge readings). Pump work about 5 hours, the pump shaft began to move, the motor vibration, immediately stop, check slightly after the start again, just after the start, the pump shaft does not move, as the water pressure increases, when the pressure