Method and device for the grinding and separating of grain

Roller mill comprising:

• frame means;
• a pair of upright supporting means arranged parallel to each other and disposed on said frame means;
• first material treating means mounted on said frame means;
• and
• wherein said treating means comprises:
• a pair of rollers extending between said supporting means, each roller having two ends and a longitudinal rotational axis extending between said two ends, said pair of rollers being arranged in a first horizontal plane, the rollers being separated from each other by a common vertical plane;
• a pair of fixed bearing housings supported by said supporting means, the fixed bearing housings being spaced to receive the respective ends of one of said rollers, the fixed bearing housings being mounted on said supporting means at two fixed points situated substantially vertically one above another;
• a pair of movable bearing housings supported by said supporting means to receive the respective ends of the other one of said rollers;
• gap setting means interconnected between said fixed and said movable bearings for setting a desired gap between said rollers, there being separating forces acting on said rollers during operation of the mill;
• and
• wherein said gap setting means includes
• adjustable loading means operative between said fixed bearing housings and said movable bearing housings to contain the separating forces acting on said rollers, independently from said supporting means, said adjustable loading means enabling a quick increase of said gap in the even of a foreign object entering the gap;
• and
• wherein said bearing housings are interconnected by said frame means and said gap setting means by a first and a second connection, the first connection being above the axes of the rollers, the second connection being below the roller axes to form a hinged frame;
• and
• the mill further comprises second material treating means arranged below said first material treating means along said vertical plane.

A roller mill comprising

• housing means enclosing a working space substantially from all sides, said housing means including fixed housing means;
• cover means for providing an access from outside to said working space and being arranged to cover an opening of said fixed housing means;
• hinge means for pivotally connecting said cover means to said fixed housing means, said hinge means comprising a plurality of hinge elements;
• first and second locking means on said hinge elements and said fixed housing means within the region of said opening for releasably locking said hinge elements on said fixed housing means;
• hinge moving means connected to at least part of one of said first and second locking means to unlock the pivotal connection of said cover means and said fixed housing means;
• and
• material treating means within said working space, said treating means comprising at least one pair of rollers;
• and
• wherein said first and said second locking means comprise respectively hook means, and latch means for gripping said hook means;
• and
• said latch means comprise
• a pair of first latching elements disposed along one margin of said opening opposite to said hinge means;
• a pair of second latching elements each disposed along an other margin of said opening opposite to each other;
• and
• a pair of motion transfer elements for transferring motion from one of said first and said second latching elements to the respective other one of them.

A roller mill comprising:

• frame means;
• at least one pair of rollers on said frame means, each roller having two ends being rotatable about an axis of rotation, the axis being situated in a substantially horizontal plane;
• a pair of fixed bearing housings supported by said frame means, said bearing housings being spaced to receive the respective ends of one of said pair of rollers;
• a pair of movable bearing housings on said frame to receive the respective ends of the other one of said pair of rollers;
• gap setting means interconnected between said fixed and said movable bearings for setting a desired gap between said pair of rollers, there being separating forces acting on the rollers in each pair of said rollers in operation of the mill;
• and
• wherein said gap setting means comprises
• adjustable loading means operative between said fixed bearing housings and said movable bearing housings to contain the separating forces acting on said at least one roller pair in operation of the mill, independently from said frame means, said adjustable loading means enabling a quick increase of said gap in case a foreign object enters the gap;
• abutment means being displaceable towards and away from said bearing housings for a fine adjustment of said gap, said abutment means being free of any self-locking action;
• displacement drive means for said abutment means;
• rod means interconnecting said abutment means with at least one of said movable bearing housings for transferring displacement of said abutment means for fine adjustment to said movable bearing housing;
• and
• wherein said adjustable loading means, for a quick increase of the gap, is also connected to said displaceable abutment means.