Patent ID: 9387491
Filing Date: 2016-07-12
CPC Classification: B04B

Claim Text:
1. A centrifugal separator comprising: a frame; a spindle rotably supported by the frame; a centrifuge rotor mounted to the spindle to rotate together with the spindle around an axis of rotation, wherein the centrifuge rotor comprises a rotor casing enclosing a separation space in which a stack of separation disks is arranged; a plurality of peripheral ports extending from the separation space through the rotor casing to a surrounding space; a valve slide movable between a closed position, in which the peripheral ports are closed, and an open position, in which the peripheral ports are open; a closing chamber provided between the valve slide and the rotor casing and containing a hydraulic medium acting on the valve slide; an inlet channel configured for supplying the hydraulic medium to the closing chamber in order to hold the valve slide in the closed position; and an outlet passage for discharging an outlet flow of the hydraulic medium in an outlet direction from the closing chamber in order to move the valve slide to the open position, wherein the outlet passage comprises a number of outlet channels for the outlet flow, and wherein each outlet channel extends through the rotor casing and is associated with a respective valve body, wherein the valve body is provided in the outlet channel and is axially movable in a direction parallel to the axis of rotation from a closing position to an opening position against the outlet direction in order to permit the outlet flow, wherein the valve body rests against a valve seat in the outlet channel when the valve body is in the closing position, wherein the centrifugal separator comprises a closing mechanism arranged to move the valve body from the closing position to the opening position by removing the valve body from the valve seat towards the valve slide, wherein the closing mechanism comprises an annular control slide extending around the axis of rotation and being movable from a first position to a second position, thereby removing the valve body from the valve seat to the opening position.