CENTRIFUGAL SEPARATOR WITH DISC STACK

摘要

The present invention provides a centrifugal separator (9) comprising a frame (24), a drive member configured to rotate a rotating part in relation to the frame around an axis of rotation (x), wherein the rotating part comprises a centrifuge rotor (10) enclosing a separation chamber (12). The separation chamber comprises a stack of separation discs (13) arranged coaxially around the axis of rotation (X) at a distance from each other such as to form passages between each two adjacent separation discs. The stack of separation discs comprises a first type of separation discs (1) having an outer diameter of A or below, and at least one separation disc of a second type (6b) having outer diameter B or above, wherein diameter B is larger than diameter A. At least one of the separation discs of the second type is arranged at a position in the disc stack that is within the upper 15 % of the total number of separation discs and at least one of said first type of separation disc is arranged axially above the uppermost separation disc of the second type.