Patent ID: 6325751
Filing Date: 2001-12-04
Classification: B04B

Abstract:
A centrifugal separator comprising:a centrifuge rotor (1), said centrifuge rotor being rotatable about an essentially vertical axis (x) of rotation and around the periphery having at least one outlet (3) being openable during operation and being arranged to discharge intermittently a certain quantity of a separated product;a casing (4), enclosing the centrifuge rotor;a space (6), being delimited by the centrifuge rotor (1) and by an inner surface of a wall extending around the centrifuge rotor and forming a part of the casing (4), wherein the space (6) is arranged to receive said product from said openable outlet (3); andan outlet passage (8), extending from the space (6) and arranged to convey said product from the space (6), wherein the inner surface comprises a first surface portion (9'), located at the level of said openable outlet (3) and extending around the centrifuge rotor (1) and upwardly and inwardly with respect to said axis (x) of rotation from a second surface portion (9"") of the inner surface, the second surface portion being located below the first surface portion, said first and second surface portions (9',9"") at their intersection forming a continuous border area (12),wherein the second surface portion (9"") is essentially rotary symmetric and extends around the centrifuge rotor (1) and downwardly and inwardly with respect to said axis (x) of rotation and the outlet passage (8) is located below the maximum diameter of the second surface portion (9"") with respect to said axis (x) of rotation.