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AssigneeGreenField Specialty Alcohols Inc.
InventorsRichard Romeo LEHOUX, Christopher Bruce BRADT, Jeffery Alan WOOD
Estimating the term…
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.
A device for controlling backpressure in a screw conveyor press including a conveyor screw and a barrel housing the conveyor screw, the device comprising 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 being deformable for adjusting a spacing between at least a portion of the pressure surface and the conveyor screw.
A method of controlling backpressure in a screw conveyor press including a conveyor screw and a barrel housing the conveyor screw, the method comprising the steps of deforming an adjustable section of the barrel for modifying a spacing between the section of the barrel and the conveyor screw.
An adjustable barrel section for controlling backpressure generation of a reverse conveying section in a screw conveyor press including a conveyor screw and a barrel housing the screw, the barrel including multiple sections, the adjustable barrel section comprising a casing for incorporation into the barrel and connection to at least one other barrel section, and an adjustable barrel block for surrounding at least an axial portion of the reverse conveying section and having a pressure surface for facing the reverse conveying section, the adjustable barrel block having a deformable portion deformable to move the pressure surface closer to or further away from the reverse conveying section for adjusting a spacing between the pressure surface and the reverse conveying section, and means for deforming the deformable portion for adjusting the spacing between the reverse conveying section and the pressure surface.
Dependencies are inferred from the claim text.