Centrifugal pumps are a sub-class of dynamic axisymmetric work-absorbing turbomachinery. Centrifugal pumps are used to transport fluids by the conversion of rotational kinetic energy to the hydrodynamic energy of the fluid flow. The rotational energy typically comes from an engine or electric motor. The fluid enters the pump impeller along or close to the rotating axis and is accelerated by the impeller, flowing radially outward into a diffuser or volute chamber ( casing ), from where it exits.

Common uses include water, sewage, petroleum and petrochemical pumping. The reverse function of the centrifugal pump is a water turbine converting potential energy of water pressure into mechanical rotational energy.
 

An oilfield solids control system needs many centrifugal pumps to sit on or in mud tanks. The types of centrifugal pumps used are sand pumps, submersible slurry pumps, shear pumps, and charging pumps. They are defined for their different functions, but their working principle is the same.

The impeller of such a pump is magnetically coupled with the motor, across a separation wall which is resistant to the fluid pumped. The motor drives a rotor carrying one or several pairs of permanent magnets, and these drag around a second pair ( s ) of permanent magnets attached to the pump impeller.

In a solids control system, centrifugal pump is the ideal equipment to provide impetus for desander, desilter and jet mud mixer. It can also be used as charge pump auxiliary perfusion for mud pump and trip pump for drilling well head. KOSUN Centrifugal Pump is also called sand pump. We considered completely the set equipment can work in excellent condition in the process of designing parameters. Most parts can be exchanged, with convenient operation and maintenance, less seal leakage, reliability, long life and other advantages.