| 摘要 |
A rotor assembly for use in pulping apparatus is similar in general construction to the disclosure of Vokes U.S. Pat. No. 3,073,535, but the thickness of its defibering vanes is reduced to minimize their pumping action, and pumping vanes are provided on the outer surfaces of certain of the defibering vanes to increase the vortical circulation effect created by the rotor in operation. |
