Anti-dry running protection - for roller mills for grinding cocoa, chocolate pigments etc

摘要

Roller mill for the fine grinding of cocoa, chocolate, pigments, soap etc. having an electro mechanical device for protecting the rolls against running dry, which functions in accordance with the stock of material in a feed unit, the longitudinal wall of which is constructed from a rigid upper part and a spring-loaded bottom part freely movable outwardly between the side plates of the feeder and has a shut-off limit switch situated centrally on the outside of and at an adjustable distance from it and attached to its rigid upper part or to a fixed part of the machine, the push rod of the switch being positively connected directly or indirectly with the spring-loaded movable lower part of the longitudinal wall.