SU1187990A1 - Stage separator for grading wood shavings in production of wood particle boards - Google Patents

Abstract

CASCADE separator for sorting wood chips in the production of wood particle boards, including a housing, zigzag channels, loading and unloading chutes and adjacent to the loading estrus inclined screen, characterized in that, in order to increase productivity and uluchscheni sorting extent kaskadnm separator is provided with a fractionating Walz , which is mounted at the outlet of the loading chute, and an additional sieve, which is installed under the main one and is made with an increase in the size of the holes along the length. (L

Description

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The invention relates to cascade separators and can be used to sort wood chips in chipboard production.

The purpose of the invention is to increase productivity and improve the degree of sorting.

The drawing shows the proposed separator section.

The cascade separator includes a housing 1, which is divided into several zigzag channels 2, in which chokes 3 are installed, a loading choke 4, a screw 5, a dosing-fractionation roller 6, a fan 7, adjusting flaps 8. A discharge screw 9 is installed at the bottom of the separator and unloading chute mounted 0. Over the screw 9, the lower I1 and the upper 12 grids are installed. The openings of the lower grid 11 are made with an increase in length away from the loading estrus 4 and from the frack of the ionizing roller 6. The upper part of the zigzag channels 2 is connected to cyclones 13 and 14, which, in turn, are connected to the blade feeders 15. Fan 7 and cyclones 13, 14 are connected by a pipe 16. With the help of a fan 7, an INCENTING air flow is injected into the separator, which by means of adjusting valves 8 directs

in each separation channel.

Cascade separator works as follows.

Wood chips are fed through the loading chute 4 by the screw 5 to the dosing-charging disc 6.

The latter delivers chips to the sorting channel, forcibly throwing them into the lower part of the separation chamber. Thick (heavy J particles, having the smallest aerodynamic drag coefficient) describe the largest parabola in their flight, the length of the parabola and the departure distance decrease with decreasing thickness. A preliminary division of str5gak into fractions

The air flow injected by the fan 7, the passage through the grid 1I, which has cells of different diameters, acquire a different speed. In accordance with the size of the cells in the first channel from the fractionating roller, the speed is minimal, in the last - the maximum. Next, the air flows directed by the valves 8, penetrate the plume of soaring particles and drag them into the separating zigzag channels. The required air velocity in the canape of the canapé is set by turning the adjusting throttles 3. The pinch-shaped particles fall into the first channel, and then into the cyclone 13. Larger particles enter the second and subsequent channels, and from there - into the cyclone 14. Coarse chips fall into the bottom of the installation, from where they are continuously removed by screw 9.

The separator design allows an increase in productivity of approximately 50% and splitting the strand of your material into three or more fractions. ,

Claims (1)

CASCADE SEPARATOR FOR SORTING WOOD CHIP IN THE PRODUCTION OF WOOD AND BIRTH PLATES, including a housing, zigzag channels, loading and unloading chutes and an inclined sieve adjacent to the charging chute, characterized in that the separator is equipped with a separator to increase productivity and improve the sorting , which is mounted at the outlet of the boot heat, and an additional sieve, which is installed under the main one and is made with increasing size of the holes along the length. 1 I I