| 摘要 |
A blade of a transport system of a column diffusion unit comprises a frontal part, a rear part, which is made as feathering, a working part, arranged therebetween, and a cover plate, arranged on the side of fixing the blade on a shaft. The frontal part of the blade is made as a rounded one closer to the side of fixing the blade on the shaft arranging thereon the profiled cover plate, concave on three sides thereof in such a manner as to allow arranging thereof as a wedge between said round part of the blade and between the shaft along a tangent as regards thereto. |
