Adjustable compression screw press

摘要

A variable compression screw press includes a volume displacing member which overlies the pressure housing feed flight of the screw press. In one embodiment, the volume displacing member is a shroud which may be moved in and out of the intake hopper as desired, without having to disassemble the press. In a second embodiment, the volume displacing member is a hinged gate which can be adjusted to overlie more or less of the pressure housing feed flight. In a third embodiment which may be used in cooperation with either first or second embodiment, the volume within the pressure housing feed flight is partly occupied by block elements removably mounted to the screw flighting of the pressure housing feed flight.

主权项

1. Apparatus to vary a compression ratio of a screw press having a screw with wide pitch flighting at an intake region of the screw press and narrow pitch flighting at an outlet of the screw press, comprising:
a volume displacing element disposed in an intake hopper of the screw press, the volume displacing element having a curved lower end, the curved lower end conforming to a periphery of the wide pitch flighting, the screw including a feed flight disposed upstream of an entry of a cylindrical housing for the screw, the volume displacing element disposed above the feed flight, the volume displacing element being selectively moveable to span over a selected portion of the feed flight.