Reasons for high current of corrosion-resistant multi-stage centrifugal pumps used in coal mines and treatment methods
When we use corrosion-resistant multi-stage centrifugal pumps for coal mines, we must pay attention to the maintenance methods of multi-centrifugal pumps, otherwise it will have a significant impact on the life of corrosion-resistant multi-stage centrifugal pumps used in coal mines. The reason and treatment method of high current of rotten multistage centrifugal pump.
Corrosion-resistant multistage centrifugal pump for coal mine
1. The relative density and viscosity of the process medium exceed the index. Treatment method: Check whether the material components make their viscosity and relative density consistent with the design value, and adjust by the process operator.
2, electrical failure. Solution: Check the setting value of the circuit breaker heater, check the voltage, the three-phase current should be balanced, and the error is not more than 3%.
3. The outlet valve of the corrosion-resistant multi-stage centrifugal pump used in coal mines is fully opened when it starts, and the resistance in the outlet pipe is too small. Treatment method: close the outlet valve and slowly open the outlet valve after the pump is started.
4. The balance pipe is not smooth, and the treatment method: dredge the balance pipe
5. The pump is not well assembled, and the moving and static parts are rubbed or stuck. Treatment method: re-assemble the pump, check the fit clearance, bearing clearance, mechanical seal positioning, etc., and adjust strictly according to the design requirements.
6. The medium is too heavy or the viscosity is too large and it is not in line with the design; the solution: du try to change the conveying medium, so you can tell
7. Serious friction between the rotor and the shell; treatment method: disassemble the centrifugal pump and check the friction
8. The coupling is not concentric or the bearing is worn. Treatment method: adjust the balance and replace the bearing.
