Self-priming pump device

The utility model provides a self-priming pump device. The self-priming pump device comprises a pump body, a plurality of inlet pipelines, a plurality of output pipelines and a pumping system connection pipeline, wherein a pumping system connection stop valve is arranged on the pumping system connecting pipeline, the plurality of inlet pipelines are respectively provided with an inlet pipeline stop valve, and the plurality of output pipelines are respectively provided with an output pipeline stop valve. When media are poured into the pump body, the pumping system connection stop valve is opened so that the media can flow into the pumping system connection pipeline through the pump body. When the media are pumped through one of the inlet pipelines after the media are poured into the pump body, the inlet pipeline stop valve on the one of the inlet pipelines and the corresponding output pipeline stop valve are opened, the pumping system connection stop valve is closed, and therefore the media in a container to b