Machine blocking prevention impeller

The invention relates to a machine blocking prevention impeller and belongs to the technical field of water pump accessories. The machine blocking prevention impeller comprises a hub and at least three vanes surrounding the peripheral edge of the hub, the edges in the rotating direction of the impeller, and the edges of the top ends of the vanes are in a zigzag shape, and the surfaces of the vanes are coated with scrub layers. When the impeller works, foreign matter absorbed into a water pump can be cut and ground, and therefore blocking of the water pump is prevented.