A Centrifugal pump is an equipment that uses to transfer liquid by transferring rotating power from one or more impellers. Liquid introduces in the impeller, which rotates rapidly along its axis, and is expelled along its circumference through the tip of the runner blade under centrifugal force. The operation of the runner raises the speed and pressure of the fluid and guides it to the outlet of the pump. The housing of the pump specially designs to compress the liquid from the pump inlet, direct it toward the runner, then slow it down to control the liquid, and then drain it.
Working of Centrifugal Pump
Priming is the first step in operating a centrifugal pump. During priming, the pump inlet tube housing is linked to the pumped fluid at the fluid position, and all air is expelled at the pump position without leaving any air. The need to start the centrifugal pump is due to the fact that the pressure produced in the runner of the pump is comparative to the density of the liquid that is in contact with it.
After the pump has been filled with water, the supply valve remains closed, and the motor starts rotating the runner. To decrease the opening of the valve, the supply valve remains closed so that the liquid flows radially outwards through the impeller blades at higher speeds on the outer circumference under the effect of centrifugal force. This allows fluid from the cesspit to sink by the inlet tube into the runner’s eyes rather than through the long drain from the center circumference of the runner used to lift the fluid to the desired height by the discharge tube.