| 摘要 |
A centrifugal separator has a flexible member (28) for the transport of liquid to and/or from a centrifuge rotor (15), which rotates around the rotor in the same direction but with half the speed. The flexible member (28) is provided with a braided casing to give it a large stiffness against torsion, good tension strength and an outside surface with good wear resistance. The casing comprises plaited threads (32) of e.g. metal or plastics, some of which extend helically with a certain pitch around the flexible member and others of which extend helically in the opposite direction. The plaiting of the threads (32) is such that the casing per se is axially contractable and extensible with simultaneous radial expansion and contraction, respectively. When in use the casing is axially extended so that it is radially contracted into frictional engagement with the flexible member (28). |
