What Are The Common Faults Of Centrifugal Slurry Pumps?

Centrifugal slurry pumps may experience many common faults during operation. These faults will not only affect the normal operation of the equipment, but may also have serious impacts on production.The following are some common faults and their brief descriptions: 1. The pump does not absorb water or the pressure gauge jumps violently: This may be caused by insufficient infusion of water, air accumulation in the pump, air leakage in the suction pipe and meter pipe.Solutions include filling up water, checking the pipeline and eliminating air leakage.2. The vacuum gauge indicates the height of the vacuum, but the pump still does not absorb water: This is usually because the bottom valve is not opened or is seriously blocked, the water suction pipe has a large resistance, and the suction height is too high.The solution is to check the flexibility of the bottom valve valve, remove blockages, simplify the water absorption pipeline as much as possible, and reduce the water absorption height.3. The outlet pressure gauge indicates that there is pressure but the pump has little or no water: Possible reasons include large resistance to the outlet pipe, wrong steering, blocked impeller, and insufficient speed.The corresponding solutions are to reduce the pipe resistance, check the steering of the motor, remove impeller blockages, and increase the speed. 4. The flow rate is lower than the design flow rate: This may be caused by impeller blockage, excessive wear of seal ring gap, insufficient speed, etc.The solution is to remove clogs, replace the sealing ring, and increase the speed to the specified value on the nameplate.5. Pump consumes too much power: Possible reasons include excessive pressure of the filler, causing heat from the filler chamber, wear of the impeller, and excessive water supply of the pump.The solution is to relax the packing gland, replace the impeller, and close the gate valve to reduce the flow.6. Water pump vibration: This may be because the pump shaft and the motor shaft are different centers, the impeller is unbalanced, and the bearing clearance is too large.The solution is to adjust the pump and motor to align the axis, adjust the impeller through a balance test, and replace the bearing.7. Bearing heating: The bearing lacks oil or the oil viscosity is too large affecting lubrication, the bearing wear gap is too large, and the pump and motor are different centers may cause the bearing to heat up.The solution is to refuel, change the oil or use oil with low viscosity, replace the bearings, adjust the pump and motor to ensure concentricity.8. High noise: The pump and motor installation are different from each other, and the pump or motor bearings may cause heavy noise.The solution is to adjust the installation of the pump and motor so that it is concentric and replace the worn bearings.In general, for common failures of centrifugal slurry pumps, it is necessary to diagnose according to specific symptoms and take corresponding solutions.At the same time, regular maintenance and maintenance are also important means to prevent failures.