Hydrodynamic blueberry sorting

Classifying – separating – and assorting solids – Precedent preparation of items or materials to facilitate... – Sorting special items or sorting by methods and apparatus...

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Details

209173, 209645, 209932, B07C 502

Patent

active

042254248

ABSTRACT:
Blueberry sorting, i.e. classifying, and apparatus therefor, to separate ripe berries from unripened berries and stems, by dynamically immersing all of the berries beneath the surface of a water bath, the unripened berries being controllably allowed to rise to float on the surface of the bath, the ripe berries being deposited on a submersed conveyor and conveyed out of the bath to a separate location. Berry immersion is achieved hydrodynamically by a downward stream of water which propels the berries down to cause release of gas bubbles on the ripe berry surfaces, carry them through a flow zone to the conveyor and then recirculate.

REFERENCES:
patent: 1681627 (1928-08-01), Sawyer
patent: 2530676 (1950-11-01), Berg et al.
patent: 2554495 (1951-05-01), Key
patent: 2976992 (1961-03-01), Bloch

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