Centrifugal Pump Parts

An impeller is a rotating component of a centrifugal pump which transfers energy from the motor that drives the pump to the fluid being pumped by accelerating the fluid outwards from the center of rotation. In critical applications the media flowing through pumps carry abrasive and erosive substances such as sand or silt. These substances move through all the fluid channels, impeller sidewalls and close clearances inside the pump. If the size of abrasive particles is less than the clearance, they move freely and impact the casing at shallow angle causing erosive wear. If the particle size is same as the clearance, it may clog between the impeller and casing thereby causing three body abrasions. Under severe operating conditions the effect of abrasion, corrosion and cavitation may lead to accelerated wear rate leading to unexpected breakdown and heavy maintenance costs.