SCREW PRESS FOR SEPARATION OF LIQUIDS FROM BULK MATERIALS

A screw press liquid separator includes an elongated housing having an inlet end and a discharge end, a screw cradle in the form of a sieve disposed within the housing and having a bulk material inlet disposed at the inlet end of the housing, at least one section of the screw cradle mechanically coupled to a vibrator motor, a screw formed on a shaft and disposed within the screw cradle, the screw extending from the inlet end of the screw cradle to a discharge end of the screw cradle, a motor rotatably coupled to the shaft, and pair of opposing discharge doors pivotally mounted to the discharge end of the housing and movable between an opened position and a closed position, the discharge doors driven to positions that maintain a substantially constant pressure on bulk material being driven by the screw towards the discharge end of the housing.