What's the name of the suction port of the fire pump room?

There is a suction hole at the bottom of the pump. According to the inquiry, Baba learned. The suction hole at the bottom of the pump is used to suck water from the water source. There is a filter screen or suction nozzle at the suction hole at the bottom of the pump to prevent impurities from entering the pump. Only when there is enough water at the bottom of the water source can the water be sucked through the suction hole at the bottom of the pump, and then discharged through the impeller and the water outlet in the pump body to achieve the effect of pumping water.