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Common defects and eliminating methods of single stage centrifugal pump

 Single-stage centrifugal pump

1. Shaft power is too large, the current increases. The main reasons are as follows:  

 
 1). Packing gland too tight or tight side, and the shaft friction, the filler fever.  
 
 2).There is friction within the pump.  
 
 3).Bearing damage   
 
 4) pump flow rate.  
 Elimination method: adjust the pressure is reduced, the maintenance of pumps, pump to eliminate friction; friction, bearing replacement, traffic regulation.  
 

 2. Pump suction is not Sheung shui. The main reasons are as follows:  

 
 1). Water suction pipe or filling in the air leakage.  
 
 2).Impeller damage   
 
 3). Inlet and outlet pipe blockage.  
 Elimination method: replace the packing, overhaul the impeller, remove the blockage.  

 3. Pump vibration and noise. The main reasons are as follows:  

 1).Bearing damage  
 
 2).Imbalance of the impeller  
 
 3). Intake of air or inlet plug. 
 
 Elimination method: replace the bearings, the impeller to find a balance, eliminate the air inside the pump, clean up the blockage.

 

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