OUTPUT UNIT COMPRISING A FEED DEVICE, AN AGRICULTURAL IMPLEMENT WITH SUCH AN OUTPUT UNIT AND A METHOD FOR CONTROLLING FLOW IN THE AGRICULTURAL IMPLEMENT

Patentradars sammanfattning

Väderstad Holding AB discloses a feed device (145) for output units of agricultural implements—particularly drill seeders—that uses a near-vertical auger conveyor (1455/1456) to lift granular material (seeds, fertilizer, pesticide) from a lower material buffer to an elevated material outlet connected to a delivery tube aimed at a furrow. The upward conveying direction exploits gravity as a self-regulating back-pressure, mitigating flow pulsations and the effects of ground-induced implement shaking, and enables rapid, positive shutoff when the auger stops. The invention further covers variable blade-pitch and axle-diameter auger geometries, optional airflow pickup at the transfer device outlet, granule sensors for closed-loop control, multi-row drive configurations, and an overarching method for flow control across a plurality of output units.

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