This hopper-type screw pump features a rectangular hopper and a propeller on the connecting rod. It is suitable for non-free-flowing media containing liquids. When conveying slag-liquids, a stirring rod can also be installed to prevent sedimentation. For high-concentration slag-liquids, a large hopper with crushing function can be added to prevent clogging. The pump can be equipped with various drive options, and is most suitable for a three-phase gear reducer motor.