In potato harvesting the systems used for separating tuber-like impurities such as stones and clods of earth are predominantly mechanical. However, these are limited in performance efficiency, and especially with multiple-row harvesting machinery frequently represent a bottleneck. By combining a perforated conveyor base and an uplift airstream flowing through from below, a pneumatic separator device in which the direction of crop flow and hence the machine-specific potato throughput are retained without restrictions has been realized in harvesting machinery for the first time.
During the passage through the separation area the tubers are virtually kept gently floating above the vibrating conveyor base, while the heavier stones and clods of earth drop down and are passed via a segmented lock to a removal belt. The quality and performance of separation can
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