| 摘要 |
PROBLEM TO BE SOLVED: To provide an impeller for a pump dispensing with filling resin in a recess counterbored in a plate face of a rotary disk (a shroud) for weight balance adjustment. SOLUTION: An annular masking plate 6 is fixed overlapped with the plate face of the rotary disk (shroud) 1 to close a plurality of recesses 5 counterbored in the plate face of the rotary disk (shroud) 1 for the weight balance adjustment of the impeller. Filling of resin into the recesses 5 counterbored in the plate face of the rotary disk (shroud) 1, and chipping work for a swollen part after filling are dispensed with. COPYRIGHT: (C)2004,JPO&NCIPI
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