The main flow components of centrifugal pumps have suction chamber , impeller and pressurized water chamber . Suction chamber in front of the impeller inlet, the liquid toward the impeller play a role ; pressurized water chamber spiral mainly pressurized water chamber ( volute ) , guide vanes and vane three forms of space ; pump impeller is most important work element is the heart of flow components , the impeller blades by the cover and in the middle of the composition .

Centrifugal pumps work before , the first pump is filled with liquid , and then start centrifugal impeller rotates rapidly , driven by fluid rotating impeller blades , the outer edge of the impeller to rely on the inertia of the liquid flow while rotating impeller from the suction chamber sucked into the liquid, this process , a liquid flow around the impeller blades, the movement of the liquid flow around the blade functions as a lift , and this in turn lift the blade to a size of equal and opposite force is applied to the liquid , the force acting on the liquid , get the energy out of the liquid and the impeller , then the kinetic energy and the pressure of the liquid can both increase.

The role of the rotating impeller centrifugal liquid rely on the prime mover of the mechanical energy transfer to the liquid . Since the centrifugal effect of the liquid from the impeller inlet to the outlet of the process, the speed can be increased and the pressure energy is being discharged through the liquid pressed out of the impeller chamber , most of the speed can be converted into pressure energy , and is discharged along the conveying line out , then , at the impeller inlet and the discharge of the liquid due to a vacuum or low pressure to form a liquid , water in the pool below the surface of the pressure ( atmospheric pressure ) role is pressed into the inlet of the impeller , so the impeller rotating continuously to suction and discharge liquid.