我们在乡下维修深井泵中,经常发现有逆止销失灵的情况,造成水泵飞速倒转,致使传动轴的螺纹连接松动,发生事故,影响生产。查其原因:1.销孔内存有粘性物质,粘住逆止销,使其不起作用;2.逆止盘的槽里有异物,使槽变浅,停泵时逆止销落不下来,水泵照样反转。防止逆止销失灵的方法是:1.考试合格的机手才能开泵,非机手一律不得开泵;2.用汽油或煤油清洗销孔,除去粘性物质,使逆止销能自由下 We repair deep well pumps in the country, often found to have reverse pin failure, resulting in rapid reversal of the pump, resulting in loose threaded shaft connection, an accident, affecting production. Check the reasons: 1. Pin hole memory sticky substance, sticky anti-pin, so that it does not work; 2. Anti-blocking plate of the groove there are foreign bodies, so that shallow groove, stop the pump down when the counter-pin down The pump is still reversed. To prevent the anti-pin failure method is: 1. Examination of the qualified machine to open the pump, non-machine will not be allowed to open the pump; 2. Wash the pin hole with gasoline or kerosene, remove the sticky substance, so that the anti-pin can be free