Apparatus for sorting wood chips in separate fractions

B - Operations – Transporting – 07 – B

Patent

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Details

B07B 4/02 (2006.01) B07B 11/06 (2006.01)

Patent

CA 2420303

The invention relates to an apparatus for sorting wood chips (1), involving chips (11, 12) in a variety of sizes and similar, substantially hexahedral pieces having a length and a width, as well as a thickness substantially less than the latter, and possibly fines particles (13), by means of an impulse action, such that the excess thickness chips (11) or the fines particles (13), or both the excess thickness chips (11) and the fines particles (13) are separated from the wood chips (1) to form a separate fraction, the miscellaneous chips (11, 12) and the fines particles (13) being adapted to be sorted from each other by way of various trajectories established by means of the impulse action, said apparatus comprising a feeder (6, 6') for supplying the wood chips (1) onto a sloping support surface (2) and for sliding the same along said support surface (2) over a slit (3) extending thereacross, said slit being adapted to provide an impulse action therethrough by means of a continuous gas flow (4) on the chips (11, 12) or the fines particles (13) presently in line with the slit (3). Alongside the impulse-action generating gas flow (4) discharging from the slit (3) is mounted a baffle/guide plate (14) for an ejector effect created by the gas flow (4).

L'invention concerne un appareil de triage de copeaux de bois (1), avec des copeaux (11, 12) de diverses dimensions et des morceaux semblables en forme d'hexahèdre dont la longueur et la largeur ainsi que l'épaisseur sont sensiblement inférieures à celles des copeaux, et éventuellement de fines particules (13), le triage s'effectuant par impulsions, de manière que les copeaux (11) de trop grosse épaisseur ou les fines particules (13), ou à la fois les copeaux (11) de trop grosse épaisseur et les fines particules (13), soient séparés des copeaux (1) de bois pour former une fraction séparée, les copeaux divers (11, 12) et les fines particules (13) étant adaptés pour être triés et séparés les uns des autres selon diverses trajectoires établies par impulsion. Ledit appareil comprend un distributeur (6, 6') de copeaux (1) de bois sur une surface (2) de support en pente, et sert également à faire glisser ceux-ci le long de ladite surface (2) de support sur une fente (3) s'étendant de part et d'autre, ladite fente étant adaptée pour générer une impulsion grâce à un flux gazeux continu (4) sur les copeaux (11, 12) ou les fines particules (13) alignés avec la fente (3). Associé au flux gazeux (4) générateur d'impulsions issu de la fente (3) est monté un déflecteur/plaque de guidage (14) permettant d'obtenir un effet d'éjection créé par le flux gazeux (4).

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