Patent ID: 6749552
Filing Date: 2004-06-15
Classification: B04B

Abstract:
A screw-type solid bowl centrifuge for centrifuging material which has a tendency to foam, the centrifuge comprising:a centrifugal drum having a liquid discharge port, a solids discharge port and a rotatable cylindrical-conical bowl jacket having a screw which is rotatable relative to the bowl jacket; a feed section having a central feed pipe arranged concentrically about the axis of rotation of a centrifugal drum for the feeding of the material to be centrifuged through a distributor into a centrifuge chamber between the screw and the bowl jacket, wherein the feed section is an hermetical, closed system; a screw body; and a baffle plate arrangement for preventing foam or small or floating particles formed during centrifuging from being discharged through the liquid discharge port, wherein the baffle plate arrangement has two baffle plates with one baffle plate located on the screw body between the distributor and the liquid discharge port and the other baffle plate located on the screw body between the distributor and the solids discharge port and the latter baffle plate having openings toward its inner circumference for the passage of foam in the direction of the solids discharge port.