Abstract: A centrifugal apparatus includes: a bowl including a plurality of projection portions provided in a standing manner at an edge portion of an opening portion, the plurality of projection portions each including a curved surface portion bulging toward a rotation axis; a screw conveyer; a hub forming separate matter discharge ports between the respective circumferentially adjacent projection portions; and wear-resistant sleeves. The wear-resistant sleeves each includes a sleeve body that is formed in an arched shape along the corresponding curved surface portion and covers the curved surface portion; and a claw portion including one end connected to one end portion, in a longitudinal direction perpendicular to the axis direction, of the sleeve body. The claw portion is in contact with an outer surface of the corresponding projection portion and fixed to the outer surface via a detachable tool for fixing, and an insertion opening for inserting the projection portion.

Abstract: A centrifuge provided with: a bowl having a plurality of extension lugs formed on an opening rim section at one end of the bowl in the axial direction, the extension lugs being spaced apart from one another in the circumferential direction; a screw conveyer rotatably housed inside the bowl and rotatable at a different rotational speed than the bowl; a hub forming solid discharge ports between circumferentially adjacent pairs of the extension lugs, the hub connecting to the extension lugs and covering an opening of the opening rim section from the axial direction; and a wear-resistant sleeve including a sleeve body and a flange. The sleeve body covers lug inner surfaces of the extension lugs and the flange extends in an arced shape along the opening rim section. The sleeve body is attached with axially extending bolts to the opening rim section at a position that avoids the extension lugs.

Abstract: A centrifugal apparatus includes: a bowl including a plurality of projection portions provided in a standing manner at an edge portion of an opening portion, the plurality of projection portions each including a curved surface portion bulging toward a rotation axis; a screw conveyer; a hub forming separate matter discharge ports between the respective circumferentially adjacent projection portions; and wear-resistant sleeves. The wear-resistant sleeves each includes a sleeve body that is formed in an arched shape along the corresponding curved surface portion and covers the curved surface portion; and a claw portion including one end connected to one end portion, in a longitudinal direction perpendicular to the axis direction, of the sleeve body. The claw portion is in contact with an outer surface of the corresponding projection portion and fixed to the outer surface via a detachable tool for fixing, and an insertion opening for inserting the projection portion.

Abstract: A centrifugal separator separates liquid from solid and includes a hollow bowl and a screw conveyor, the solid discharged from one end of the bowl and the liquid discharged from plural liquid discharge ports at an opposite end of the bowl, the separator further includes a separated liquid jetting device which collects separated liquid that has overflowed the top of an overflow edge of a dam disposed on each discharge port. The separated liquid jetting device has a separated liquid retention chamber that temporarily retains the collected separated liquid inside thereof, a jet nozzle that is open in the direction opposite to the rotation direction of the bowl and that jets out the liquid located inside the separated liquid retention chamber to the outside and the separated liquid jetting device also has a release port formed above the jet nozzle.

Abstract: Provided is a centrifugal separator equipped with a separated liquid jet nozzle, capable of reducing energy consumption on the rotational drive of a bowl, and capable of avoiding the problem of the solid contained in the raw liquid being discharged through a jet nozzle to a liquid recovery system, and the problem of the adverse effect being produced on the water content ratio in the discharged solid content when the treatment conditions are changed. A separated liquid jetting device 9, which collects the separated liquid that has overflowed the top of an overflow edge 7a of a dam 7, is attached to a front hub 8 at a position on radially outward of each of the liquid discharge ports 6.