| 摘要 |
PROBLEM TO BE SOLVED: To provide an impeller which is not easily broken even when a material moving at a high speed hits the impeller, has a simple structure, and is manufactured at low costs.SOLUTION: An impeller 12 includes: a rotary wheel 12W which may rotate around a rotation shaft 13; and blades 12B provided at the rotary wheel 12W. Each blade 12B includes: a fixed part 12BF whose position relative to the rotary wheel 12W is fixed; and an elastic part 12BE which elastically deforms with the fixed part 12BF set as a supporting point. |
