IMPELLER FOR CIRCUMFERENTIAL-FLOW PUMP

摘要

PROBLEM TO BE SOLVED: To provide an impeller for circumferential-flow pump capable of attaining little wasteful material as well as the high flatness of a side face and the high dimensional precision of an outside diameter. SOLUTION: The impeller 7 includes a plurality of vane grooves 12 on the outer periphery side of a disc-shaped member 8 rotated by a motor and is rotatably stored in a roughly disc-shaped space 6 formed between a pump casing 4 and a pump cover 5. A boss section 13 having a shaft hole 14 engaging with a driving shaft 15 rotated by the motor is protrudingly formed at the roughly central section of the disc-shaped member 8 on one side-face 10 side. COPYRIGHT: (C)2003,JPO