DISC STACK FOR CENTRIFUGAL SEPARATOR

Disc package (13) for a centrifugal separator, comprising a first set of separation discs (1), a second set of separation discs (6), wherein each disc of the first and second sets have a separation portion (2, 2') having a surface inclined with respect to the radial direction, the discs of the first and second sets are arranged coaxially around a rotation axis (X) at a distance from each other such that to form passages between adjacent discs, the separation discs of the first set have outer diameters A or below, wherein the separation discs of the second set have outer diameters B or above, wherein diameter B is larger than diameter A, wherein at least two separation discs of the first set are arranged between every two separation disc of the second set, wherein each separation disc of the first set is provided with cut-outs in the form of slits (5) that are open towards the outer radius of the separation disc, wherein each separation disc of the second set is provided with cut-outs in the form of holes (8) that are closed towards the outer radius of the separation disc, and wherein the cut-outs (5, 8) are arranged such that to distribute a flow of fluid to be separated through and over the disc package.