self-priming pump

The self-priming pump is a self-priming centrifugal pump. It has the advantages of compact structure, convenient operation, smooth operation, easy maintenance, high efficiency, long life, and strong self-priming ability. There is no need to install a bottom valve in the pipeline. Before starting work, you only need to ensure that there is a certain amount of pilot liquid stored in the pump body. Different liquids can use self-priming pumps made of different materials.
The working principle of a self-priming pump is that the pump chamber is filled with water (or there is water in the pump chamber itself) before the pump is started. After starting, the impeller rotates at high speed to cause the water in the impeller groove to flow to the volute. At this time, a vacuum is formed at the inlet, causing the water inlet check door to open. The air in the suction pipe enters the pump and reaches the outer edge through the impeller groove.