Patent ID: 7314560

Claim:
A cyclone separator for separating a fine substance from a liquid containing the fine substance, the cyclone separator comprising: an introduction passageway for introducing the liquid containing the fine substance; a liquid pressurizing chamber containing an orifice ring for receiving the liquid containing the fine substance from the introduction passageway and discharging the liquid containing the fine substance through discharge passageways provided in the orifice ring at plural sites thereof in an eddy flow, the orifice ring comprising an inner ring having an outlet liquid discharge passageway and an outer ring having an inlet liquid passageway, the area of the inlet liquid passageway being varied through relative sliding movement between the inner ring and the outer ring in a circumferential direction; a cyclone body for receiving the liquid containing the fine substance in an eddy flow, separating the fine substance from the liquid containing the fine substance by transferring the fine substance to an outer circumferential side thereof by centrifugal force, discharging the liquid separated from the fine substance and precipitating the separated fine substance; and a liquid flow-out passageway for receiving the separated liquid discharged from the cyclone body and discharging the separated liquid from the cyclone separator.