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用于机井的带底阀的离心泵,要想将它挪一个地方很困难。这是因为拔出吸水管(里面有水)太费劲,而且吸水胶管也易被磨坏漏气。我们用下面的方法解决了这个问题:在停泵前10分钟左右,往井里放一条绳子,其上端拴在泵上,下端入水后应比底阀低一尺左右。当用手轻轻提绳感到比原来多少有点费劲时,证明绳子的下端已被吸进底阀里。这时停泵,几分钟
Centrifugal pumps with bottom valves for machine wells can be difficult to move in one place. This is because it is too laborious to pull out the suction tube (there is water inside), and the suction hose can easily be worn and leaked. We used the following method to solve this problem: about 10 minutes before stopping the pump, put a rope into the well, the upper end of the pump is connected to the pump, the lower end of the water after the foot valve should be about one foot lower. When you feel a little bit harder than lifting the cord by hand, prove that the lower end of the cord has been drawn into the end valve. Then stop the pump, a few minutes