Fire pump for fire fighting system

Abstract

The present invention discloses a fire pump for a fire fighting system, the fire pump including a pump body (), a motor (), a transmission assembly (), a water inlet pipe (), a water outlet pipe (), and a display instrument (). The pump body is a centrifugal pump, and the pump body includes a volute, an impeller (), and a diffuser (). The impeller includes a plurality of blades () distributed along a circumferential direction, and the diffuser includes a plurality of guide blades () distributed along a circumferential direction, where the diffuser has a geometric center O, the impeller has a geometric center O, and the geometric center Oand the geometric center Oare not concentric and have a deviation (Y, X); and the plurality of guide blades of the diffuser are distributed along the circumferential direction at unequal intervals.