Centrifugal pump with crushing device

The invention relates to a centrifugal pump with a crushing device, which comprises a crushing device disposed at the front of the pump working wheel, and used for delivering fibrous or block shaped mixture in the liquid. The crushing device is formed through a cutting insert rotating along with a pump working wheel, co-acting with a cutting head equipped with a plurality of cutting knives, fixedly disposed in the housing of the centrifugal pump. The cutting head is equipped with a plurality of intervals extending along the basic axis and limited through contact tags, and one or more blades are disposed on the end surface of the intake side of the cutting head. A top cover is disposed on the end surface of the intake side of the cutting head, which includes a rotation symmetric basic body,and blades are formed from the basic body. At least one blade is designed into a formed wing.