Centrifuge having removable wear-resistant sleeve installed at a solids discharge port of a bowl

A centrifuge comprising:

• a bowl comprising a plurality of extension lugs provided at an opening edge on a first end side of the bowl in an axial direction and formed at intervals along a circumferential direction;
• a screw conveyor rotatably housed inside the bowl and capable of rotating at a rotation speed different from a rotation speed of the bowl;
• a hub connected to the plurality of extension lugs to cover an opening at the opening edge in the axial direction to form solid discharge ports between the plurality of extension lugs adjacent in the circumferential direction;
• and
• wear-resistant sleeves each comprising a sleeve main body at least covering a lug inner surface of one of the plurality of extension lugs facing a rotation axis of the bowl and a flange portion arcuately extending along the opening edge and removably installed, with fastening bolts extending in the axial direction, on the opening edge at positions other than a position of the one of the plurality of extension lugs,
• wherein vertical wall portions for protecting both side surfaces of the one of the plurality of extension lugs in the circumferential direction are respectively formed at both ends of the sleeve main body in a solid discharge direction, and wherein the vertical wall portions are formed in a gradually increasing shape in which a height of each of the vertical wall portions increases from the first end side toward a second end side in the parallel direction.