DEVICE FOR SORTING WOOD CHIPS INTO SEPARATE FRACTIONS Russian patent published in 2004 - IPC

FIELD: woodworking industry.

SUBSTANCE: the invention is dealt with woodworking industry, in particular, with devices for sorting wood chips into separate factions. The device is intended for sorting wood chips of different sizes, mainly of a hexahedral wreckage, the thickness of which in essence is less than their length and width, as well as the particles of much smaller size with the help of a pulsed impact so, that a splint with exuberant thickness or more small-sized particles, or both a splint with exuberant thickness and more small-sized particles are separated from wood chips for forming a separate faction. The technical result is an increased degree of pressing of a splint to a bearing surface. For this purpose the device contains a feeding mechanism for delivery of wood chips onto an inclined transportation surface so, that the splint slides on the indicated bearing surface over a slot passing across it At that the slot is formed so, that due to a continuous stream of gas passing through it there is a pulsed impact directed onto splints or the small-sized particles being on one line with a slot. At that the mechanism for delivery of wood chips is made with a capability of deliver a splint to the upper edge of a bearing surface, so that during sliding the slip in contact with the bearing surface the splint is laid, in essence, in the form of a single bed. At that the bearing surface on its lower edge located over the slot contains a section, that differs from the other part of the bearing surface by an angle of inclination and in the section the angle of inclination with regard to a horizontal plane is less, than the angle of inclination of the bearing surface located above it in direction of delivery of the wood chips. At that the indicated section with a different angle of inclination has such sizes, that the wood chips passing along it is subjected to action of a force directed perpendicularly to the surfaces of the indicated section and having a value at least equal to the gravity, the most preferable value is 2-4 g.

EFFECT: the invention ensures an increased degree of pressing of a splint to a bearing surface.

4 cl, 2 dwg