SU1377316A1 - Arrangement for classifying chips by thickeness - Google Patents

Abstract

This invention relates to the pulp and paper industry and makes it possible to increase the sorting efficiency by optimizing the duration of the process. The device contains a shielding means 7, which by means of levers 6 is hinged on the shaft 4 adjacent to it with sorting disks 5. In the side wall of the housing 3 in the zone of location of the shielding means 7 there is a window provided with a hinged door at the bottom. tray 19. The device is equipped with a device installed above the sorting disks 5 directed by a device made mainly in the form of an inclined shield 12, and a calibrating tool fixed in a gap relative to it, made in the form of mounting on the drive shaft 14 drives a set of cylindrical brushes or combs, and the shielding means is a comb 10, or the cylindrical brush ZP 9.7 f-ly, 6 nl .. (L

Description

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The invention relates to the pulp and paper industry, in particular to a device for sorting chips.

The purpose of the invention is to increase the sorting efficiency by optimizing the duration of the process.

FIG. 1 shows a device, a general view of $ on FIGS. 2-5, a sorting unit, construction variants; in fig. 6 is a view A of FIGS. 3 and 5.

The device for sorting chips includes a housing 1 with side walls 2 and 3. Inside housing 1 on drive shafts A, sets of sorting disks 5 are fixed with a gap, the disks 5 of each shaft 4 entering the gaps between the disks 5 of adjacent shafts 4 o Shafts 4 are installed in parallel , their number is determined by the performance of the device. On the shaft 4 of the set of disks 5 nearest to the side wall 3, the arms are secured by means of levers 6 in the form of a set of disks 7 mounted on the shaft 8 and entering the gaps between the disks 5. The shaft 8 is fixed on the levers 6. Shielding means can be made in the form of a cylindrical brush 9 fixed in the same way (Fig. 4) or a comb 10 (Fig. 5 and 6), the tooth 11 of which enters the gaps between the disks 5. A guiding device, an inclined shield 12, is fixed above the shielding means (Fig. 2) , and above the disks 5 near the side wall Ki 2 with a gap and a relatively free end of the shield 12 is mounted with a calibrating means in the form of disks 14 mounted on the drive shaft 13, for example, entering the gaps between the disks 5, or a cylindrical brush 15 (Fig. 4) or a comb 16 with teeth 17, included in the gaps between the disks 5 (Fig. 3 and 6). In the side wall 3 of the housing 1, in the area of the shielding means, a window 18 is provided, equipped with a door-tray 19, in the lower part of the hingedly fixed outer side of the side wall 3. Depending on the number of split fractions, chips in the housing 1 can be installed one above the other , somewhat similar to the construction described above with monotonically decreasing gaps in height between

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the sorting disks 5. The sorted fractions are directed through the doors-trays 19 in the tank 20.

The device works as follows.

Inside the housing 1, chips are continuously or periodically supplied to the sets of rotating in one direction the sorting disks 5. When rotating the sorting disks 5 and screening disks 7, a layer of chips is applied to the zone between them, adjacent to the disks. The chips fraction with a thickness smaller than the gap between the disks 5 is sieved between them and enters the processing zone next in height of the device, which is larger in thickness. the chips are retained by the disks 5 and remain above them. The duration of chip sorting in each sorting zone depends on the breed and fractional composition of the original chip, the design parameters of the sorting organ, modes of operations and a number of other factors that are difficult to take into account. In order to optimize the sorting time, stabilize the layer thickness of the sorted chips (with a continuous supply of chips for sorting in this case, the intensity of loading the chips is equal to the consumption of screened particles) the relative position of the shielding disks 7 and the sorting disks 5 is changed by turning the levers 6 with the shaft 8 and the disks 7 around shaft axis 4. A change in the geometry of the sorting organ leads to a change in the thickness of the layer of chips 11 according to the length of the sort. This is also facilitated by the directed dosed supply of the initial chips along the inclined shield 12 through the gap l between it and the calibrating disks 14. The gap 3 is selected from the conditions of the optimal intensity of the loading of the chips and can be regulated by known means. Dosing and shielding means can be made in the form of cylindrical brushes 15 and 9, which, while retaining the inherent functionality of these organs, provide a softer effect on the sorted chips, reduce its damage during the sorting process. Performing the metering and shielding means in the form of combs 16 and 10 allows to simplify their design.

save functional purpose. The process of sorting the chips that have passed through the gaps between the disks in the subsequent stages of sorting is similar. The removal of sorted chip fractions during its continuous feeding is carried out continuously by known methods. With periodic loading of chips (Fig. 1), the proposed device can be used as a chip analyzer for laboratory determination of its fractional composition by thickness, as well as a laboratory installation for studying the influence of design and technological parameters on the sorting process. At the same time, after the end of the process of sorting the hinge of the chips, the door-tray 19 is folded back, the levers 6 with the disks 7 fixed on them or the cylindrical brush 9 are lowered to the lower position. When the disks 5 and 7 (brushes 9) are rotated, the chips are discharged from the housing 1 and directed through the door-tray 19, for example, into the container 20. Similarly, the chips are unloaded using the comb 10 as shielding means.

Ula Invention Form

Claims (7)

1. A device for sorting chips in thickness, comprising a housing with side walls and a loading neck, parallel drive shafts arranged in a housing with mounted sorting disks mounted on them, which are mounted with a gap between them so that the driveshaft disks enter the gaps between the disks adjacent to shafts, and a shielding means adjacent to the side wall of the housing, characterized in that, in order to increase the sorting efficiency by optimizing 0 5 0 five 0 the duration of the sorting process, it has levers, one end of each of which is hinged on one of the drive shafts located under the shielding means mounted on the other ends of the levers. 2. Device according to claim 1, characterized in that, in order to improve the conditions for removal of sorted chips, the side wall of the housing adjacent to the shielding means has a window opposite to it and a tray hinged at the window to remove sorted chips. 3. The device according to paragraphs. 1 and 2, characterized in that it is provided with a device mounted above the sorting disks, mounted on one of the  side walls, and calibrating means, mounted with a gap relative to the guiding device on the other side wall. 4. The device according to claim 3, distinguished by the fact that the guiding device is made in the form of an inclined shield, and the calibrating means is made in the form of a drive shaft with calibrating disks mounted on it. 5. The device according to claim 3, characterized in that the calibrating means is made in the form of a cylindrical brush. 6 o The device according to claim 3, characterized in that the calibrating means is made in the form of a comb. 7. The device according to paragraphs. 1-6, characterized in that the shielding means is made in the form of a toothed bar. 8, the Device in PP. 1-6, characterized in that the shielding means is made in the form of a brush element. 1 Fig.Z FIG. View A noSepMtjmo S {16) FIG. S ten FIG. five