| 摘要 |
PROBLEM TO BE SOLVED: To provide an impeller for agitation which has a plurality of blades each formable easily and quickly without spending time and effort and can be driven with significantly reduced driving power. SOLUTION: In each of a plurality of blades 20, a side edge 24 in one longitudinal direction of a band plate 22 is cut in an obliquely linear shape to the inner side of the band plate 22 from the middle part toward the tip part of the edge 24. Bordering on an obliquely linear bending line 28 set toward the middle part of the side edge 24 in the one longitudinal direction of the band plate cut in the obliquely linear shape from the middle part of the side edge 26 in the other longitudinal direction of the band plate located at the opposite side of the cut start point 25 of the middle part of the side edge in the one longitudinal direction of the band plate, the tip part 27 of the band plate is folded obliquely downward to the hinder part 29 of the band plate to form each blade 20 having the same shape. Each of a plurality of blades 20 is extended by radially be arranged around a hub 10.
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