Principle of self-priming pump for photovoltaic panels

What is a self priming pump?

A self-priming pump is a centrifugal pump that has the ability to draw liquid from a level underneath its suction port without an exterior priming aid. The name of a self-priming pump represents that it has the capability to prime itself. For this reason, the accessory priming chamber or the housing must have adequate liquid to prime the pump.

How does a self priming centrifugal pump work?

In the case of a self-priming centrifugal pump with a separation chamber, the pumped medium and the air bubbles entrained in it are pumped into the separation chamber by the action of a runner. During this, the air expels by the outlet port of the pump, but the water recedes and is again accompanied by the runner.

Can a self priming pump be used in a sewer system?

The compressed air-primed self-priming pump does not have a priming chamber and also stops the high accumulation of solids. Therefore, these can be used in the sewer system. These have a dry-running capacity.

What external arrangements ensure pump priming?

Following are some external arrangements that ensure the pump-priming: In manual priming, the water pours manually into the inlet of the pump. In this method, the water directly is poured into the pump by an inlet valve. As the priming process completes, all of the air escapes from the outlet valve, and normal pumping operation starts.