The spray pump adopts external mixing and self-priming structure, and there should be a proper amount of liquid in the pump. After the pump is started, the impeller rotates, forming negative pressure at the inlet of the impeller. The gas in the suction pipeline is mixed with the liquid in the pump and enters the gas-liquid separation chamber through the extrusion chamber. Because of the different specific gravity of gas and liquid, gas is separated from liquid and discharged from the outlet pipe, and liquid sinks in the gas-liquid separation chamber. After many cycles, the gas in the suction tube is completely discharged and filled with liquid, and the self-suction process is completed, and the pump starts normal infusion.
Shower pump can absorb and drain water under pressure. The self-priming pump can directly suck the water in the pond into the tank, or it can be directly connected to the urban street fire hydrant to inject water into the tank for sprinkling operation.