Common troubles and solutions of PNJB series rubber pumps

malfunction cause Method of exclusion
Shaft power is too large 1, the proportion of ore is too large

2, friction within the pump

1, adjust the proportion of pulp

2, dismantling inspection to rule out friction parts

Lack of head 1, the gap between the impeller and the front jacket is too large

2, serious impeller wear

1, adjust the gap between the impeller and the front jacket

2, replace the impeller

Bearing overheating 1, bearing oil or less into the impurities

2, the bearing displacement gap is too small

1, refueling or cleaning oil change

2, bearing cover pad to enlarge the gap

Pump vibration 1, bearing damage

2, unbalanced impeller or impeller wear out of balance

3, the pump into the slurry is too small or a large number of intake

1, replace the bearing

2, replace the impeller

3, increase the amount of slurry into the gas

Sealed leaks Vice impeller structure:

1, perfusion pressure is too large

2, the impeller impeller and deputy impeller blade end gap is too large

3, impeller blades and deputy impeller serious wear or vice impeller blockage

Filler structure:

1, water seal tube no water

2, packing wear

1, reduce perfusion pressure

2, adjusted to the technical requirements

3, replace the impeller and vice impeller or vice impeller

1, check the pressure seal water seal device into the filler

2, replace the new packing

Failure reasons Remedy Excessive shaft power 1, the proportion of ore is too large

2, friction within the pump

1, adjust the proportion of pulp

2, dismantling inspection to rule out friction parts

Less than 1 lift, impeller and the gap between the front jacket is too large

2, serious impeller wear

1, adjust the gap between the impeller and the front jacket

2, replace the impeller

Bearing overheating 1, bearing oil or less into the impurities

2, the bearing displacement gap is too small

1, refueling or cleaning oil change

2, bearing cover pad to enlarge the gap

Pump vibration 1, bearing damage

2, unbalanced impeller or impeller wear out of balance

3, the pump into the slurry is too small or a large number of intake

1, replace the bearing

2, replace the impeller

3, increase the amount of slurry into the gas

Seal leakage Vice impeller structure:

1, perfusion pressure is too large

2, the impeller impeller and deputy impeller blade end gap is too large

3, impeller blades and deputy impeller serious wear or vice impeller blockage

Filler structure:

1, water seal tube no water

2, packing wear

1, reduce perfusion pressure

2, adjusted to the technical requirements

3, replace the impeller and vice impeller or vice impeller

1, check the pressure seal water seal device into the filler

2, replace the new packing

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