CENTRIFUGAL SEPARATOR

PURPOSE:To eliminate the generation of a stain or spot generated by the re- adhesion of pure water to a base plate caused by the splash-back of said pure water, by providing an oblique part to a receiving container. CONSTITUTION:During the low speed rotation of a rotary disc 16, pure water used in washing is injected from the nozzle of a nozzle shaft 22 provided to a lid 21. Pure water in the direction shown by the arrow D washes the surface of a base plate 1 and impinged to the inner wall of the oblique part 25 of a receiving container 24 to be splashed back to the direction shown by the arrow E while fallen pure water is discharged to the direction shown by the arrow F from the discharge port 26 provided to the lower part of the receiving container 24. Thereafter, nitrogen gas is injected from the nozzle 23 during the high speed rotation of the rotary disc 16 and blows off pure water remaining on the base plate 1 by centrifugal force and performs the drying thereof. At this time, pure water blown off by centrifugal force is impinged against the inner wall of the oblique part 25 of the receiving container 24 to be blown off the the E-direction and hardly adhered to the base plate 1 again.