Loesche Gmbh

Thomas Letsch

Michael Keyssner

Alexander Klokow

Jörg Bettenworth

Dirk Grube

Hugo Meiring

Rajendra Puranik

The invention relates to a lever system for force transmission for a grinding roller. A more cost-efficient, simplified lever system is to be created which no longer requires the integration into a mill stand but is more easily accessible for installation and maintenance works. For this purpose, provision is made in particular in that on the central rocking lever of the grinding roller an eccentrically arranged side lever is provided which has a lever arm extending in the opposite direction to the grinding roller and in that the force transmission onto rocking lever and grinding roller takes place via a lever arm of the side lever and a piston rod of the hydraulic cylinder.

Lever system for force transmission

The invention relates to a roller mill having a modular construction. In order to permit an increased rated grinding capacity with a limited roller/rocking lever mass and a larger number of rollers, the standards are displaced outwards and the rocking lever axes, relative to the displaced standards, are positioned eccentrically and radially inwards between the grinding table and standards.

Roller mill having a modular construction

To reduce the manufacturing costs of air-swept roller mills and comparable mills and for optimizing the grinding and classifying processes via the flow direction of the fluid-grinding material mixture, according to the invention a blade ring is provided, which has pivotable guide blades. The blade ring is constructed as a polygon blade ring in segment form with at least one outer jacket ring or outer ring, which is constructed in segmented, polygonal manner and comprises a plurality of outer polygon segments formed from planar sheet metal blanks. One or more pivotable guide blades can be arranged with an upper, lower or central pivot axis on the polygon segments and can be pivoted and locked with no or few stages.

Blade ring for air-swept roller mills

To reduce the manufacturing costs of air-swept roller mills and comparable mills, according to the invention a segmented polygonal blade ring is provided, which is manufactured from a plurality of polygon segments, which have planar surfaces and are preferably cut to size from metal sheets. To individual polygon segments can in each case be fixed with a predeterminable inclination one or more guide blades. Preferably an outer polygon segment an an inner polygon segment with at least one guide blade form a polygon segment. Polygon segments can be linked to polygon runs and the latter to polygon blade rings with different diameters.

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Duisburg, Germany

Thomas Letsch