Introduction
The screw pump (also known as Archimedes Screw Pump or Spiral Water Lifter) lifts water through the axial rotation of helical blades.
It consists of a shaft, screw blades, and outer casing. When the shaft rotates, water enters the screw channel and rises continuously until discharged.
Key Features:
Simple structure and easy manufacturing
Large flow rate with low head loss
High efficiency and easy maintenance
Low lift height and low speed, requiring a gearbox
Widely used for irrigation, drainage, sewage, and sludge lifting applications.
Common Problems & Solutions
1. Strong Vibration or Noise
Possible Causes:
Improper or unstable installation
Damaged motor bearing
Shaft bending or misalignment with motor
Solutions:
Reinstall or secure the pump properly
Replace motor bearings
Straighten the shaft or realign the pump and motor
2. Overheating of Drive Shaft or Motor Bearing
Possible Causes:
Lack of lubrication
Damaged bearing
Solutions:
Add lubricating oil
Replace the damaged bearing
3. No Water Output
Possible Causes:
Pump body or suction pipe not primed
Water level too low
Cracked suction pipe
Solutions:
Prime the pump properly and check for leaks
Adjust water level or replace suction pipe
Operation Tips
The flow rate of a screw pump is linearly proportional to its speed.
Although a higher speed increases flow and head, it also raises power consumption and accelerates rotor–stator wear, leading to early pump failure.
Since high-speed pumps have shorter rotors and stators, a low-speed, longer rotor design is recommended for better durability and service life.