| 摘要 |
A centrifugal classifier that is reduced in size and capable of reliably and efficiently separating sediment and suspended matter from a raw liquid and capable of sufficiently washing separated substances, the classifier being also superior in drainage efficiency. Installed on the shaft barrel (30a) of a screw conveyor (30) are a plurality of plate vanes (33) extending axially and radially on the inner diameter side of a spiral vane (31). The outer end edge of each plate vane is positioned between the liquid level in a bowl (20) and the inner peripheral surface of the bowl, and the spiral vane is rotated along the outer end edges of the plate vanes. And the space between adjoining plate vanes on the inner diameter side of the spiral vane is a suspended matter conveyance passage (R). Further, the position close to a dam (24) in the inner peripheral surface of the bowl is tapered such that the diameter is gradually reduced toward the front. Further, a suspended matter drainage region (25) is tapered such that the diameter is gradually increased toward the suspended matter outlet (26) at the front end.
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