Claas Selbstfahrende Erntemaschinen Gmbh

Roger Helmut Koitzsch

Gunnar Quincke

Jonas Brandmeier

Thomas Tiggemann

Norbert Vorwerk

Philipp Topmöller

A screening device and a self-propelled harvester with a screening device. The screening device includes at least one suction nozzle that has an elongated hollow body with at least one suction opening which extends sectionally in the longitudinal direction and transverse direction of the hollow body, and is connected by at least one air duct in the interior of the hollow body to a connection arranged in the hollow body for connecting to a vacuum source. The suction opening is positioned facing a screen of the screening device. The air duct has a cross-sectional shape that increases in the vertical direction toward the connection starting from an outer end of the suction nozzle. An inner contour facing the suction opening of the air duct has a contour that substantially corresponds to an airfoil.

Screening device with at least one suction nozzle

A measuring device is provided for measuring a mass flow composed of bulk material, in particular grain, in a continuous, circulating conveyor enclosed in part by a housing, having planar conveyor elements, which conveys the bulk material from a lower bulk material receiving area to a higher bulk material delivery area. A substantially circular movement course is imposed on the bulk material delivered by the respective conveyor element in a substantially radial direction of an inner surface of a cover section of the housing by a guide surface formed in the upper region of the conveyor. The bulk material is deflectable toward a sensor surface of the measuring device. At least the sensor surface of the measuring device is disposed in the upper region of the conveyor such that there is a tangential course in the transition from the guide surface to the sensor surface.

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Bielefeld, Germany

Roger Helmut Koitzsch