Patent ID: 7056273

Claim:
A solid bowl screw centrifuge, comprising: a centrifuging chamber; a rotatable drum having a horizontal axis of rotation, the rotatable drum surrounding the centrifuging chamber; a rotatable screw arranged in the rotatable drum; at least one solids discharge; at least one liquid discharge duct; a peeling disk via which liquids are discharged through the liquid discharge duct; a blocking chamber connected to an output side of the peeling disk, the blocking chamber including an annulus having a first siphon disk arranged therein, the blocking chamber being a hydrohermetic blocking chamber to seal off the centrifuging chamber from its surroundings via a sealing liquid that is independent of material to be centrifuged; a feed line assigned to the blocking chamber to feed the sealing liquid; and wherein the rotatable screw includes a second siphon disk extending from the screw radially to the outside into the centrifuging chamber.