US 12,121,913 B2
Centrifuge having removable wear-resistant sleeve installed at a solids discharge port of a bowl
Masaru Nagasu, Tokyo (JP); and Yuhei Tahara, Tokyo (JP)
Assigned to TOMOE ENGINEERING CO., LTD., Tokyo (JP)
Appl. No. 17/420,830
Filed by TOMOE ENGINEERING CO., LTD., Tokyo (JP)
PCT Filed Nov. 1, 2019, PCT No. PCT/JP2019/043008
§ 371(c)(1), (2) Date Jul. 6, 2021,
PCT Pub. No. WO2020/183779, PCT Pub. Date Sep. 17, 2020.
Claims priority of application No. 2019-045852 (JP), filed on Mar. 13, 2019.
Prior Publication US 2022/0088614 A1, Mar. 24, 2022
Int. Cl. B04B 1/20 (2006.01); B04B 11/02 (2006.01)
CPC B04B 1/2008 (2013.01) [B04B 11/02 (2013.01); B04B 2001/2091 (2013.01)] 7 Claims
OG exemplary drawing
 
1. 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 each of the plurality of extension lugs is formed in a stepped shape including a thick wall portion and a thin wall portion respectively located at a leading end and a base end of each of the plurality of extension lugs in the parallel direction and the lug inner surface is formed on the thin wall portion.