Classifying – separating – and assorting solids – Precedent preparation of items or materials to facilitate... – Sorting special items or sorting by methods and apparatus...
Patent
1980-08-15
1981-12-15
Hill, Ralph J.
Classifying, separating, and assorting solids
Precedent preparation of items or materials to facilitate...
Sorting special items or sorting by methods and apparatus...
209250, 209308, 162 4, 162 55, B07B 900
Patent
active
043055079
ABSTRACT:
Defectively made absorbent articles (e.g., disposable diapers) are shredded for reclamation, and their fluff fillers, mixed with undesired scraps, are fed downwardly towards a forwardly moving horizontal stretch of a conveyor screen. Fluff fibres are forced into a collecting chamber under said screen stretch by maintaining a subatmospheric pressure therein to generate a downward air flow through the screen. Above the stretch are a succession of separating chambers. Under the screen stretch, near the front of each such chamber, is an air outlet from which air is blown upward to lift material off of the screen. Near the front of each chamber, above the screen, is a paddle wheel rotor that propels lifted material rearwardly in the chamber, thus maintaining agitated circulation of material in each separating chamber. When one separating chamber is overloaded, excess material is carried on the screen into the next forward one.
REFERENCES:
patent: 1026432 (1912-05-01), Dey
patent: 2721656 (1955-10-01), Goodwin
patent: 2996183 (1961-08-01), Russum
patent: 3890220 (1975-06-01), Anderson
patent: 3909397 (1975-09-01), Aldinger
Custin James R.
Hill Ralph J.
Magna-Graphics Corporation
Nilles James E.
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