PUMP IMPELLER, PUMP DEVICE, AND METHOD FOR ADJUSTING BALANCE OF THE PUMP IMPELLER

摘要

PROBLEM TO BE SOLVED: To provide a pump impeller suppressing vibration due to fluid reaction fluctuated around a rotating shaft center. SOLUTION: A weight having a predetermined mass is provided in a predetermined area on a shroud. The weight has the predetermined mass required for allowing the impeller to generate centrifugal force equivalent to 5-45% of the sum of the fluid reaction received around the rotating shaft center by the impeller, and is provided in the predetermined area on the shroud within a predetermined angle range of ±30° around the rotating shaft center with a line extending in a direction opposed to a direction of the sum of the fluid reaction from the rotating shaft as a boundary. COPYRIGHT: (C)2010,JPO&INPIT