| 摘要 |
PCT No. PCT/SE88/00510 Sec. 371 Date Jan. 17, 1990 Sec. 102(e) Date Jan. 17, 1990 PCT Filed Oct. 4, 1988 PCT Pub. No. WO89/03250 PCT Pub. Date Apr. 20, 1989.The present invention concerns a centrifugal separator comprising a rotor, which forms an inlet (12) for a liquid mixture, a separation chamber (5), connected to the inlet (12), for separation of components in a liquid formed mixture and a discharge chamber (10). The discharge chamber is delimited by two axially separated end walls (12, 13) and a circumferential wall (14) extending between these and has an inlet (11, 11a) connected to the separation chamber (5), an outlet in a discharge device (17) arranged in the discharge chamber (10), and means, which together with parts of the inner surfaces of the discharge chamber (10) are arranged, during operation of the rotor, to entrain into rotation a component present in the discharge chamber (10) so that this forms a rotating liquid body. This liquid body has a radially inwards directed, essentially cylindrical, free liquid surface radially inside the circumferential wall (14). The discharge device (17) extends during operation from a central liquid free, part of the discharge chamber (10) to a level radially outside the free liquid surface. In order to gently into rotation entrain the component present in the discharge chamber (10) and make a discharge possible out of it with a small degree of air admixing the centrifugal separator according to the invention is provided with entraining means comprising at least one annular disc (19, 19a, 19b, 19c) extending around the rotational axis of the rotor which is fixedly connected to the rotor and has at least one part extending radially outside the level of the free liquid surface but radially inside the level of the outermost part of the discharge device (17). |
