Centrifugal pump
is most widely used in agriculture due to its simple structure and high
efficiency. Sometimes people think centrifugal pump used conveniently,
but sometimes it could not get water. We must analysis the reasons
carefully.
On the one hand, there is some air in water inlet pipe
or pump body. Some customers have not filled with enough water before
starting pump. It just looks full. In fact, little air still leave in
the pipe or pump body. Pump packing has been worn or pressed too loosen.
It has an influence on getting water finally.
On the other hand,
the pump speed is too slow. At first, you must install the pump
correctly. Two wheel center distance can not too small and the two axis
should be parallel. When the drive belt has been worn for a long time,
it will easy to slip, and even reduce the pump speed. Sometimes pump
itself in mechanical fault may lead to pump speed too slow. For example,
fasten nut between impeller and pump shaft is loosening. And friction
will be caused by the impeller and pump body directly. So the pump speed
will become slow.
