Machine and method for sorting out over-thick wood chips

Details Machine and method for sorting out over-thick wood chips Machine and method for sorting out over-thick wood chips

1989-01-17

1991-05-07

Valenza, Joseph E.

Classifying, separating, and assorting solids

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

Separating means

209673, B07B 1307

Patent

active

050129333

ABSTRACT:
Wood chips having an acceptable thickness pass between the rollers of a roller screen for collection and over-thick chips discharge from one end of the roller screen for recycling. The rollers have chip agitating protuberances, preferably of pyramidal shape or in the form of spiral ridges. A second roller screen with pyramidal protuberances on its rollers and with its rollers closer together is used to screen out fines, preferably after the fines and acceptable chips pass through the first roller screen. Some of the fines pass through the second roller screen by occupying the valleys between the pyramidal protuberances.

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