| 摘要 |
A feeding device singulates, orients, and delivers seeds and other comparatively smooth-surfaced particulate material to a desired destination. The device comprises a horizontal rotating drum (2) having an inner surface cut with a spiral groove (6) for orienting ellipsoid-shaped particles and advancing them to the location of pickup orifices (8) within the drum (2). A vacuum valve (15) alternately subjects the orifices (8) to vacuum and ambient pressure (13) for picking up the individual particles and releasing them to the desired point of delivery (21).
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