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C L O S E D
The structure of the pipeline multi-stage centrifugal pump is mainly composed of: low pressure suction section (feed pipe, feed chamber); pump body (volute, guide wing, anti-wear ring); high pressure output end (pump head); balance device (balance pipe, Balance plate, balance disc); sealing device (packing seal, mechanical seal); pump shaft (shaft sleeve, impeller, positioning key, bearing).
Auxiliary devices: brackets, bases, couplings, motors, filters, etc.
Fault judgment and elimination phenomenon: After the pump is started, the pump pressure drops and the pump does not flow up.
The main reasons of pipeline multistage centrifugal pump:
Incomplete venting and air in the pump;
The filter or the oil inlet line is blocked (the oil flow is not smooth), and the inlet of the primary impeller is blocked;
Oil temperature is too low or too high;.
The liquid level (pressure) of the large tank or buffer tank is too low;
The balance device is seriously worn (the balance pipe is blocked or caused by improper operation
The low-pressure end of the centrifugal pump is not tightly sealed, and the leakage causes the air to enter the pump
Approach:
Re-vent until the liquid naturally flows out from the