Disc screen with controlled interfacial openings

Details Disc screen with controlled interfacial openings Disc screen with controlled interfacial openings

1991-03-18

1992-11-17

Hajec, Donald T.

Classifying, separating, and assorting solids

Sorting special items, and certain methods and apparatus for...

Separating means

209667, B07B 116

Patent

active

051635640

ABSTRACT:
A disc screen with spacers of limited compressibility is disclosed which has an elongated metal shaft member with a plurality of screen discs mounted co-rotatively on the shaft member. The screen discs have central shaft receiving openings through which the shaft extends coaxially. The screen discs are separated and spaced on the metallic shaft member by a plurality of metallic nonresilient and nonmetallic resilient spacers located between and coaxial with adjacent screen discs. The preferred embodiment of this invention has two metallic spacers with one nonmetallic resilient spacer between them, with the group of three spacers being located between each pair of screen discs which are spaced along the shaft member. The nonmetallic resilient spacers, which are preferably polyurethane, function to allow limited tilting of the screen discs out of the plane perpendicular to the axis of rotation.

REFERENCES:
patent: 893905 (1908-07-01), Dodge
patent: 1399211 (1921-12-01), Hollingbery
patent: 1524360 (1925-01-01), Lauritzen
patent: 1621695 (1927-03-01), Tuite et al.
patent: 1899737 (1933-02-01), Ulrich
patent: 2150717 (1939-03-01), Jaxon
patent: 2699253 (1955-01-01), Miller
patent: 4741444 (1988-05-01), Bielagus
patent: 4901863 (1990-02-01), Lancaster
patent: 4901864 (1990-02-01), Daugherty
patent: 4972959 (1990-11-01), Bielagus
patent: 4972960 (1990-11-01), Bielagus

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