US 12,121,912 B2
Exchangeable separation insert
Kasper Höglund, Rönninge (SE); and Peter Thorwid, Sundbyberg (SE)
Assigned to ALFA LAVAL CORPORATE AB, Lund (SE)
Appl. No. 17/296,873
Filed by ALFA LAVAL CORPORATE AB, Lund (SE)
PCT Filed Dec. 9, 2019, PCT No. PCT/EP2019/084137
§ 371(c)(1), (2) Date May 25, 2021,
PCT Pub. No. WO2020/120357, PCT Pub. Date Jun. 18, 2020.
Claims priority of application No. 18211240 (EP), filed on Dec. 10, 2018; and application No. 18211241 (EP), filed on Dec. 10, 2018.
Prior Publication US 2022/0055043 A1, Feb. 24, 2022
Int. Cl. B04B 1/08 (2006.01); B04B 7/08 (2006.01); B04B 7/14 (2006.01); B04B 9/12 (2006.01); B04B 11/02 (2006.01)
CPC B04B 1/08 (2013.01) [B04B 7/08 (2013.01); B04B 7/14 (2013.01); B04B 9/12 (2013.01); B04B 11/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An exchangeable separation insert for a centrifugal separator comprising:
a rotor casing enclosing a separation space in which a stack of separation discs is arranged, the rotor casing being arranged to rotate around an axis of rotation;
a first stationary portion and a second stationary portion, said rotor casing being axially arranged between said first and said second stationary portions;
a feed inlet for supply of a fluid mixture to be separated to said separation space;
a light phase outlet for discharge of a separated phase of a first density, and a heavy phase outlet for discharge of a separated phase of a second density higher than said first density, wherein said feed inlet is arranged at a first axial end of said rotor casing, and wherein one of said light phase outlet and heavy phase outlet is arranged at a second axial end, opposite the first axial end, of the rotor casing;
a first rotatable seal for sealing and connecting said feed inlet to a stationary inlet conduit in said first stationary portion; and
a second rotatable seal for sealing and connecting one of said light phase outlet and heavy phase outlet to a stationary outlet conduit in said second stationary portion,
wherein the rotor casing, the first stationary portion, and the second stationary portion form a pre-assembled insert configured to be inserted into a rotatable member of the centrifugal separator.