Chopper pump

摘要

A chopper pump for pumping and chopping a slurry which contains fibrous material. The pump includes a housing having a bottom inlet and a tangential outlet. A single vane impeller is mounted for rotation within the housing and a generally square cutter blade is mounted on the vane and rotates in proximity with fixed cutter teeth on the housing to thereby comminute solid materials. Extending downwardly from the vane of the impeller through the inlet opening is a generally curved fin or blade that is concentric with the axis of rotation of the impeller and has a sharpened leading diagonal edge adapted to cut stringy fibrous material.