Why the submersible electric pump vibration?

When we were in the use of submersible electric pump in use will often appear the phenomenon of vibration, that happens a lot of people will be nervous, and fear, and thought the pumps to be bad, in fact, we don’t have to completely nervous, below we shanghai weihu pump  co., LTD., for everybody introduction of what causes this kind of situation.
1, the water level drops, pumps above the water, lead to pump water, not only when pumping pumped in a large amount of air.
2, high water level, pump station need to lift more, electric pump work in unstable saddle area near the inflection point.
3, suck water carried on a foreign body, blocked the adsorption on the rotating impeller, in addition to cause the asymmetry of flow field in hydraulic vibration, but also will damage the rotor static and dynamic balance, a mechanical vibration caused by unbalanced mechanical disturbance force phenomenon.
Four and a half, pump shaft appeared no bending or unilateral friction, we need to axis alignment or replace new one.
Five different heart, pump shaft and motor shaft, it needs us to reassemble the adjustment, adjust both to work.
6, bent axis, making the uneven air gap of the motor, bearing load, may even make the stator and rotor of the motor phase, make the submersible pump run-time produces violent vibration.
7, connecting flange and bolt to loosen, we can tighten loose bolt and the flange connection is firm.
8, the water flow direction has changed, the water impact impeller pumps leads to violent vibration.
More than eight basic born covers all submersible pumps appear violent vibration factor, hope to be of help.