Grooved spacer for disc screen wood chip sorter

Details Grooved spacer for disc screen wood chip sorter Grooved spacer for disc screen wood chip sorter

1988-08-16

1990-02-20

Hajec, Donald T.

Classifying, separating, and assorting solids

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

Separating means

209667, B07B 1304

Patent

active

049018647

ABSTRACT:
A disc screen wood chip sorter of the type having a series of corotating shafts, each of which is provided with an axially spaced series of concentric discs. The peripheries of the discs carried by one shaft interdigitate with those of the next adjacent shafts. The discs on any one shaft are maintained in parallelism by spacer elements in the general form of short cylindrical washers. The specific improvement of this invention relates to a novel configuration of these spacing elements. Each spacer end is provided with a flange to thereby define a central, annular groove or recess between the flanges, each annular receiving recess receiving a portion of the periphery of an adjacent disc, i.e., a disc mounted on a neighboring shaft. By virtue of this novel form of disc spacer, the disc screen sorter severely inhibits the passage of wood chips of a thickness greater than intended, i.e., chips of a thickness greater than the spacing between interdigitated discs. The use of discs with longitudinal thickness less than the desired thickness sort fully enhances the desirable effects of the novel spacer.

REFERENCES:
patent: 3265206 (1966-08-01), Allen
patent: 4037723 (1977-07-01), Wahl et al.
patent: 4301930 (1981-11-01), Smith
patent: 4452694 (1984-06-01), Christensen et al.
patent: 4653648 (1987-03-01), Bielagus

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