Patent ID: 7909990
Filing Date: 2011-03-22
Classification: B01D,B04C,C02F

Abstract:
1. A centrifugal separator comprising: a separation portion including a fluid outlet at its axis and a fluid inlet at a position away from its axis, in which a cutting liquid containing cut dust is supplied at a predetermined flow speed from the fluid inlet to cause the liquid to swirl, the cut dust is moved outward in a centrifugal state and the cutting liquid from which the cut dust is separated from is discharged from the fluid outlet, and the cut dust separated by slowing down the swirling liquid is allowed to sink; and a settlement portion in which the cut dust that has separated is allowed to settle, wherein the separation portion is configured such that closed cylinders, each having a tapered bottom in communication through a communication hole only on its axis, are disposed integrally with a cylinder in a plurality of stages in an axial direction, the closed cylinder at an uppermost stream stage is provided with the fluid inlet at a side away from its axis and the fluid outlet at a portion corresponding to its axis, the closed cylinder at a lowermost stream stage communicates with the settlement portion through a communication hole only on its axis, the settlement portion is detachable from the closed cylinder at the lowermost stream stage, the separation portion has heating means for heating the closed cylinder and a switching valve is provided in such a manner as to be opened or closed when the settlement portion is detachably attached onto a side communicating with the closed cylinder at the lowermost stream stage.