Diesel engine fire pump

The utility model discloses a diesel engine fire pump which comprises a supporting plate, a pump body and a trolley, the pump body is installed on the upper portion of the trolley through the supporting plate, the left portion of the lower portion of the inner wall of the pump body is rotationally connected with an impeller through a sealing ring, and the left portion of a copper pipe assembly is communicated with a water diversion device through a gasket. A vacuum meter and a pressure meter are installed on the right portion of the red copper pipe assembly, and a tightening ring and a water inlet filter are installed on the two sides of the rubber hose respectively. According to the diesel engine fire pump, the belt pulley, the pump shaft, the impeller, the water inlet filter, the rubber hose, the quick connector and the tightening ring are matched, the pump shaft and the impeller can be driven by the belt pulley to rotate at a high speed, the rubber hose and the pump body are quickly connected, mounted and