The gear pump stop the cause analysis
Of all the gear pump belongs to better quality and there's a special application. But stainless steel pump in the job also can appear some unexpected fault such as stop. We were necessary to analyze the main reason, so stop can avoid unnecessary damage after the machine. Stop is mainly caused by the failure of mechanical seal. The performance of the failure is mostly leak, leakage reasons have the following kinds:
1 ring seal face leakage, noise reasons: end plane degrees, roughness who fail to meet the requirements, or surface is slashed; End particulate matter between, causing two end can't also run; Installation does not reach the designated position, way is not correct.
2 compensation ring seal leak, the reasons: gland deformation, preloaded force not uniform; Not installed correctly; Sealing ring quality do not conform to the standards; Sealing ring type selection is wrong.

The gear pump stop the requirement: after
1 transportation easily crystallized, easy solidified, easy precipitation of the media such as pump, stop the pump shall be prevent jams, and timely with water or other media pump and pipeline flush.
2 high temperature pump should be according to the parking equipment technical documents, after parking regulations should be a 30 min 20 every partial plate, half a circle until the car pump body temperature drop to 50 ℃ so far.
3 centrifugal pump stop should be closed after the pump valve, pump cooling to population after again ordinal closed subsidiary system of valve. Discharge pump stored up in liquid, prevent rust and DongLie. Close the valve subsidiary system. Discharge pump stored up in liquid, prevent rust and DongLie.
4 low temperature pump parking when no special requirements, be full of liquid pump often; Suction valve and the discharge valve should keep to often open state; Adopt double seals of low temperature pump, liquid level controller and pump seal chamber sealing liquid should keep pump pressure grouting.