DEVICE FOR SORTING OF WOOD CHIPS BY SEPARATE FRACTIONS Russian patent published in 2005 - IPC

FIELD: timber industry; wood chips sorting.

SUBSTANCE: the invention presents a device intended for sorting of wood chips. The technical result is increased efficiency of sorting of wood chips by fractions. The device intended for sorting of wood chips (1) including the wood chips (11, 12) of different sizes as well as hexahedral cuttings with length, width, and thickness mainly smaller as compared with the above wood chips, and may be even smaller particles (13), exercises the sorting of the wood chips with the help of a pulsed action so, that the wood chips (11) with redundant width or smaller particles (13) or wood chips (11) with redundant width and smaller particles (13) separates from wood chips (1) for formation of a separate faction. At that the wood chips (11, 12) of different sizes and the smaller particles (13) are sorted separately from each other during their run by the different trajectories formed with the help of the pulsed action. The indicated device contains a feeding gear (6, 6 ') intended for delivery of the wood chips (1) onto the inclined bearing surface (2) for the wood chips sliding in direction to the indicated bearing surface (2) over a slot (3) passing across it. At that the indicated slot is made so, that under action of a continuous stream of a gas (4) a pulsed action is formed directed through it to the wood chips (11, 12) or to the smaller particles (13) located on one line with the slot (3). At that along the stream of the gas (4) generating the pulsed action and coming out of the slot (3) installed a plate (14) of a partition / guide to form a sucking action created by the stream of the gas (4), which simultaneously serves as a separating wall intended for a rejection of the smaller particles (13) so, that they from a separate faction.

EFFECT: the invention ensures increased efficiency of sorting of wood chips by separate fractions.

7 cl, 2 dwg