Diesel engine pump group cannot be started, fever, insufficient flow how to deal with?

Used diesel engine pump, must have had a few small problems. Water pump in use process, if not done in accordance with its operating mode, is likely to appear all sorts of problem, this time you'll have to check it clearly, just know what kind of problem, the problem of different processing method are also different.

1, the diesel engine pump group cannot be started

should first check the power supply situation: joint connection is strong; Whether the switch contact closely; If the fuse fusing; Three-phase power supply is short of equal. If there is open circuit, poor contact, fusing, lack of phase, should find out the reason and repair in time. Second check whether the water water pump mechanical failure,

common reasons are: packing too tight or between the impeller and the pump body is sundry jam and jam; shaft, bearings, minus leakage ring rust to live; shaft severe bending, etc. Method: relax packing, dredge flume; Disassemble pump body to remove debris, rust; Remove the pump shaft correction or replacement of the new water pump shaft.

2, heat pump diesel water pump group

reason: bearing damage. Rolling bearing or bracket cover gap is too small; shaft bending or two different axis; Belt is too tight; Lack of oil or oil; Impeller balance hole plugging, impeller out of balance, increases the thrust to one side.

elimination method: change the bearing; Demolition of rear cover in the bracket with shim between bearing; Survey the pump shaft or adjust the two shaft concentricity; The appropriate loose belt tightness; Supplying clean butter, butter accounted for about 60% of the bearing inner space; Clean up balance hole plugs.

3, diesel engine pump set of pump flow is insufficient

this is because: power speed don't match or belt creep, the rotational speed is low; Axial flow pump blade installation Angle is too small; Lift is insufficient, pipe line is too long or pipe elbow bend; On the high side suction; Local blockage or bottom valve, pipe and impeller impeller defect; Outlet pipe leaking badly.

elimination method: restore diesel engine pump rated speed, remove belt oil dirties, adjust the belt tightness; Adjusted the blade Angle, reduce the water pump installation location, and shorten or change the pipe bending; Sealing water pump leakage, pressure packing; Unclog, replace the impeller; Replacement minus leakage ring, plug leaks.

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