BACKPRESSURE CONTROL FOR SOLID/FLUID SEPARATION APPARATUS

摘要

A device and method for controlling backpressure in a screw conveyor press including barrel and one or more conveyor screws in the housing is disclosed. The device includes a barrel block for forming an axial section of the barrel and having a pressure surface for facing the conveyor screw. At least a portion of the barrel block is deformable for adjusting a spacing between at least a portion of the pressure surface and the conveyor screw. An arrangement for deforming the deformable portion, for example a hydraulic or mechanical deforming arrangement, can be included. Substantially the whole barrel block can be made of deformable material, preferably elastically deformable material. The device can further include a casing for enclosing the barrel block and the arrangement for deforming can be positioned between the casing and the barrel block. The device provides for backpressure control independent of conveyor screw rpm.