Apparatus for the expansion and/or heat treatment of oleo resinous material

摘要

Apparatus for the expansion and/or heat treatment of oleo resinous material of the type which includes a tubular housing having a rotatably driven screw for conveying material to be treated towards the outlet end of the tubular housing. An outlet discharge device is adjacent the outlet end of the housing for providing for the discharge of the material from the outlet end. The outlet discharge device includes a main ring attached to the housing at the outlet end. The head in the preferred embodiment has a plurality of teeth and depressions around the periphery of the head and the main ring also has a plurality of matching teeth and depressions in the inner circumference thereof. Alternatively, the peripheral face of the head and the inner circumference of main ring may be without depressions and teeth, but instead may respectively be in the form of a continuous face. A hydraulic actuator is attached to the head for selectively moving the head between an operating position in which the head is proximate the main ring and a cleaning position in which the head is substantially spaced from the main ring. The actuator has a control system for selectively directing hydraulic fluid to move the head from and to the operating and cleaning positions. A limiting ring is provided for limiting the position of the head relative to the main ring when in the operating position.