长轴深井泵断轴是一个使人头痛的问题,影响生产,泵要掉到井里打捞极为费事。银川机砖厂安装使用的一台6JD36×9深井泵,平均日抽水量180吨,运行10年事故情况:泵上第一轴(长1.5米)螺纹处断裂6次、中间传动轴(长2.5米)螺纹处断裂3次、中间扬水管断裂一次、上部(长1.5米)扬水管脱扣掉下一次。原因是该泵日平均起动6次,全年2200次,使泵轴螺纹处疲劳破坏。改进措施(见图): 1.紧靠泵体增加一根长1米新轴,然后再接装原长1.5米轴。2.中间传动轴,每隔2根原长2.5米轴加装一根长1.5米新轴。3.原泵座下面1.5米短管靠螺纹与法兰连接,改进后除螺纹连接外,管端做了翻 Long shaft deep well pump broken shaft is a headache, affecting the production, the pump to fall into the well is very troublesome. One 6JD36 × 9 deep well pump installed and used by Yinchuan Brick Factory with an average daily pumping capacity of 180 tons and 10 years of operation. Accident situation: the screw on the first shaft (1.5m long) on ​​the pump fractured 6 times, the middle drive shaft M) thread rupture 3 times, once the middle of Yang pipe fracture, the upper (1.5 meters long) tripping off the next. The reason is that the average daily starting of the pump 6 times, 2200 times a year, so that the threaded shaft fatigue damage. Improvement measures (see picture): 1. Close to the pump body to add a new 1m long shaft, and then tipping the original length of 1.5m shaft. 2. The middle drive shaft, every two original 2.5-meter long shaft to install a new 1.5-meter long shaft. 3. The original 1.5 meters below the original pump seat pipe flange and threaded connection, improved after the screw connection, the pipe end turned