Single screw pump can not meet the reason for suction
Single screw pump is a positive displacement pump that can complete the transportation of high viscosity fluids and medium containing hard suspended particles or medium containing fiber. Screw pump in the use of found suction liquid, what is the reason?
1, due to the leakage of the suction pipe and shaft seal, it will directly lead to the air being sucked into the single screw pump, so that the single screw pump will be in the state of sucking air, and the screw pump disassembling the inlet pipe can not form negative pressure, so the screw pump can not suck the liquid. The treatment method is to check, repair the pipeline, remove debris, adjust and replace the shaft seal.
2, the packing seal of the single screw pump may be the packing wear, the mechanical seal of the screw pump may be damaged or worn, pressing or replacing the packing, the mechanical seal damage can be replaced with a new mechanical seal.
3, screw pump motor reversal will also lead to the above problems, this time you need to adjust the polar connector of the motor can be.
4, the valve on the import and export pipeline is not open or not open enough, open the import and export valve can be.
5, the viscosity of the liquid is particularly high will also lead to the screw pump can not suck the liquid, if the liquid viscosity value is very high, can only reduce the rotation speed of the machine, and then increase the temperature of the liquid, so that the viscosity of the liquid can be reduced or replaced by a vertical screw pump.
6, in the use of a period of time, the single screw pump can not suck liquid is likely to be caused by stator and rotor damage, screw pump manufacturers recommend that you check in time to replace the new stator or rotor on it.
