BLOCKING PREVENTIVE DEVICE FOR IMPELLER INLET PART OF VORTEX TYPE CENTRIFUGAL PUMP

摘要

PROBLEM TO BE SOLVED: To provide a device for preventing the inlet part of the impeller of a vortex type centrifugal pump from being blocked caused by entanglement of foreign matter in the form of fiber or cord when the pump is used in a water with contaminant. SOLUTION: The peripheral zone of a baffle plate 7 is arranged in connection with the under-part of the inner edges 8... of blades in such a way as blocking the inlet 16 of an impeller 1. When this vortex type centrifugal pump is driven, a water with contaminant inflowing from the pump suction port 9 is introduced from the peripheral zone of the baffle plate 7 to between the blades 10... without passing the inlet part 6 of the impeller 1 and is exhausted from the pump discharge port 11 via a discharge conduit.