Why Wear in a Screw Pump Rarely Stays the Same | Shanghai Shangcheng Pump Valve
Why Wear in a Screw Pump Rarely Stays the Same | Shanghai Shangcheng Pump Valve In many industrial applications, screw pumps are widely used for transporting high-viscosity liquids, sludge, oils, and various media containing solid particles. One characteristic often overlooked by operators is that once wear begins inside a screw pump, the deterioration process usually accelerates rather than stabilizes. At first, the performance changes may seem minor. Flow rate remains close to normal, discharge pressure appears acceptable, and daily production is not noticeably affected. However, internal wear is often developing quietly. The core pumping components of a screw pump are the rotor and stator. During operation, these two parts create sealed cavities that move the fluid continuously from inlet to outlet. As wear occurs, the sealing effect gradually weakens. The first visible sign is usually a reduction in volumetric efficiency. Internal leakage increases, causing part of the pumped ...