When pumping water bubble field season, submersible pump maintenance is particularly important. Farmers maintain submersible pump mainly has the following method, oil change: open the sealed chamber and the inside of the motor oil hole screws, all the seal indoor and lubricating oil inside the motor, change new oil, to ensure normal work of lubrication system. Rust: submersible pump shaft head shafts with antirust oil.
Submersible pump and surface water pressure chamber (also known as volute) inner surface corrosion. The surface corrosion of concave and convex will pump water reduced by 7% - 8%; Only when the repair brush with steel and iron sand paper or grinding wheel grinding smooth, can in the work of the fuel consumption or power consumption reduced by 9% - 14%. Second, increased sealing ring gap. According to the samples, when the increase in the direction of impeller radius clearance 4 mm.
, pumping mud pump, medium density increases caused by overload. The measured medium density is greater than 1.3, even 1.5 ~ 1.6; Rich and motor power coefficient smaller (1.05 ~ 1.05).
2, sediment deposition in the pump body, impeller overload caused by braking, motor is nearly in the blocked state operation.
3, the clearance between the rotor shaft hole, and the clearance between the impeller mouth ring caused by sediment filling make rotor brake overload.
4, individual manufacturer to demand a win in the competition, reduce the motor power.
5, the lack of legal norms, industry unified mine submersible motor overload resistance measure, lack of standards that market competition basis points.
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