Sewage cutting centrifugal pump

The utility model relates to the technical field of sewage cutting pump structures, in particular to a sewage cutting centrifugal pump which comprises a pump body and a cutting knife group. The cutting knife group is mounted at an inlet of the pump body and is used for cutting a medium input into the pump body; the cutting knife set sequentially comprises a static knife disc, a movable blade and a movable knife disc, the static knife disc is arranged in a static mode, the movable blade and the movable knife disc synchronously rotate relative to the static knife disc, and the static knife disc, the movable blade and the movable knife disc are sequentially arranged on the cutting knife set, so that the movable blade is located between the static knife disc and the movable knife disc. Therefore, the movable blade can work on the static cutter head and the movable cutter head respectively, the movable blade participates in cutting up and down, and the cutting efficiency and the cutting effect are improved. 本实用新型涉