The utility model relates to the arrangement of a flushing port on a collecting cover shell of a material-pushing centrifugal machine, in particular to a flusher of the material-pushing centrifugal machine, which flushes bonded material between revolving drums of all levels. The flusher comprises a collecting cover shell body and revolving drum bodies, and is characterized in that the collecting cover shell body is provided with flushing holes, the distribution direction of the flushing holes is consistent with the radial distribution direction of the revolving drum bodies, and the axial position of the flushing holes is consistent with that of liquid discharging holes of the revolving drums. The blockage situation between bottoms of two levels of the revolving drums can be conveniently observed, and blocking material between the revolving drums are flushed by a water pipe, thus being beneficial to the normal separation of material, and reducing impact degree of bonded material to rotating parts such as the revolving drums and the like.