| 摘要 |
PCT No. PCT/SE85/00326 Sec. 371 Date Jun. 2, 1986 Sec. 102(e) Date Jun. 2, 1986 PCT Filed Sep. 2, 1985 PCT Pub. No. WO86/02021 PCT Pub. Date Apr. 10, 1986.In a centrifugal separator for instance for purifying oil from water and solids there is a central outlet for separated water, comprising an overflow outlet maintaining a free water surface at a certain level in the door. According to the present invention this central outlet may be closed by means of an axially movable slide (23), which is rotatable together with the rotor. The rotor also has a further overflow outlet (22a) situated radially inside said predetermined level (20) such that upon supply of a so called displacement liquid to the rotor-in connection with the opening of periphery outlets (21) from the separation chamber for discharge of separated solids-separated water cannot leave the rotor through its outlet (12, 15) for separated oil. |
