Abstract: An apparatus (10) for removing particulates from a fluid is described. The apparatus (10) includes a rotatable vessel (12) for receiving a dirty fluid containing the particulates in suspension, the vessel (12) having a plurality of side walls (14) arranged to form a polygonal cross-sectional shape in a plane orthogonal to an axis of rotation of the vessel. The vessel (12) has a fluid inlet port (16) through which the dirty fluid enters the vessel, and a fluid outlet port (18) through which a clean fluid exits the vessel after removal of particulates. The apparatus (10) also comprises a solids discharge port (20) provided at each of the vertices of the polygonal cross-section wherein, in use, when the vessel is rotated the particulates in the fluid entering the vessel (10) migrate to the vertices, from where they can be discharged through the discharge ports.

Abstract: A centrifuge includes a drum having a vertical rotational axis, a single or double conical inner jacket, an inlet pipe, a distributor into which the inlet pipe opens, the distributor having at least two distributor channels distributed about a circumference of the distributor, and a disk package including separator disks. Further included are tubular elements distributed on an outside circumference of the disk package, the tubular elements being fastened externally to the separator disk package.

Abstract: In a centrifugal rotor having inlet channels (23) which are situated between a stack of axially separated conical separation discs (13) and the rotor end wall (10), against which the separation discs turn their apex ends, there is formed a counter pressure chamber (22) in an area where the inlet channels (23) communicate with one end of several distribution channels (21) extending through the stack of separation discs. The counter pressure chamber (22) is free of entrainment members, so that liquid leaving the inlet channels (23) is allowed to rotate in the counter pressure chamber at a smaller angular speed than the rotor. Furthermore, the counter pressure chamber (22), communicates with a radially outer part of the rotor separation chamber (9) through a space (35) situated outside a flow space (36), through which separated liquid is to flow from the interspaces between the separation discs to a number of outlet channels (27) in the vicinity of said rotor end wall (10).

Abstract: In a centrifugal rotor having inlet channels (23) situated between a stack of axially separated conical separation discs (13) and the rotor end wall (10), towards which the separation discs turn their apex ends, there is formed a counter pressure chamber (22) in an area where the inlet channels (23) communicate with one end of several distribution channels (21) extending through the stack of separation discs. The counter pressure chamber (22) is free of entrainment members, so that liquid leaving the inlet channels (23) is allowed to rotate in the counter pressure chamber at a smaller angular speed than the rotor. Further, the counter pressure chamber (22), communicates with a radially outer portion of the rotor separation chamber (9) through a sludge passage (34), which opens in the separation chamber at a level radially outside the stack of separation discs.

Abstract: In order to free a liquid form a substance dispersed therein and having a larger density than the liquid a centrifuge rotor is used having a stack of conical separation discs. Elongated spacing members (11a, 11b) in the spaces between the separation discs are formed such that the liquid flow in the disc interspaces is conducted in a certain way. Thus, the main part of the liquid is conducted in flow paths (12a, 12b), each of which has a direction with one radial component and one component turned against the rotational direction of the rotor.

Abstract: In order to free a liquid form a substance dispersed therein and having a larger density than the liquid a centrifuge rotor is used having a stack of conical separation discs. Elongated spacing members (11a, 11b) in the spaces between the separation discs are formed such that the liquid flow in the disc interspaces is conducted in a certain way. Thus, the main part of the liquid is conducted in flow paths (12a, 12b), each of which has a direction with one radial component and one component turned against the rotational direction of the rotor.

Abstract: A centrifuge drum for concentrating suspended solids, has a peripheral solids collection chamber having outlet channels, a plate insert of disks communicating at a peripheral area with the solids collection chamber such that solids precipitating in the plate insert are conveyed to the solids collection chamber and an inlet chamber through which suspension being clarified is conveyed. The plate insert has central channels for diverting clarified suspension and outer rising channels extending upwardly therethrough with inlets in communication with the inlet chamber and outlets. Diverting channels are in communication with the outlets of the rising channels and have radially outward sections in communication with the solids collection chamber for diverting solids thereto and radially inward sections with outlets for diverting a solids loaded partial stream.

Abstract: A centrifuge for clarifying or separating suspensions has a centrifuge drum with a bottom, a lid, an annular seal that unites them, a chamber that provides access for the suspension, and a distributor. The suspension can be supplied past the distributor to a package of conical plates provided with inner ascending channels.