| 摘要 |
PROBLEM TO BE SOLVED: To allow the continuous and quantitative supply of a power and granular material without causing the rotational lock of a rotor even when the powder and granular material is caught between rotor blades and a casing, to reduce noise and damage to the blades, and to maintain good air tightness between the blades and the casing. SOLUTION: Respective blades 4 are provided outward in the radial direction in inclination backward in a rotating direction R.
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