| 摘要 |
A treating chamber (2) surrounded by a heating or cooling shell (6) contains a coaxial rotor (12) equipped with feed and thrust means consisting of at least two axial, equidistant, staggered rows of blade-shaped extensions (17) having the same pitch and sloping with respect both to the rotor axis and to an axial plane passing through their connection lines. Each extension (17) is offset, with respect to the extensions of the adjacent rows, by a spacing equal to the half pitch of the extensions. |
