SU1414900A1 - Apparatus for classifying chips by thickness - Google Patents

Abstract

The invention relates to pulp and paper industry, in particular to devices for sorting chips in thickness, and improves the efficiency of the process of sorting chips by stabilizing the thickness of the layer of sorted chips. Due to the fact that the shafts 4 with sorting disks 5 are located with a slope of about, not less than the fragile natural ratio of chips as a loose body, a large chip fraction is located in the upper part of the layer, under the action of gravitational forces moves down and above the limiter 9 of the layer thickness through the window 13 is removed from the housing. 4 z.Po f-ly, 3 silt with ID (L

Description

four

four

fas. 2

: The invention relates to a chain of paper industry, in particular to a device for sorting I chips in a thick layer.

The purpose of the invention is to increase the efficiency of the chip sorting process by stabilizing the thickness of the layer: sortable chips.

Figo 1 shows the device for sorting, general view; nafigo2 | the same, a variant of FIG. 3 - view A in FIG. 2 o

I A device for sorting wood chips I includes a housing 1 with side walls 2 and 3. Inside the housing 1, parallel sets of shafts 4 are equipped with sets of assorted disks 5, with the disks 5 of each shaft 4 entering the I gaps between the disks 5 of adjacent shafts 4, and the plane tangent to the I-disks 5 in their upper part is located at an angle o (to the horizontal, equal to or greater to the angle of repose of the chips as a dry body) On the shaft 4 closest to the side wall 3, the shielding means are fixed in the form of levers 6 as a set of I-disks. installed on in 8 lu | and incoming into the gaps between the discs 5, I K sorting discs 5 to neighbor

I side wall 2

I, -, -. the housing 1 of the shaft 4 adjoins the limiter 9 of the thickness of the layer I of the sorted chips, which is extra in the form of the I section of the side wall 2 (FIG. 1) either. The hinge is fixed on the shaft 4 of a flat; comb-shaped tin 10 with protrusions Ml and valleys 12, which include: disks 5 (Fig. 3). Limiter height

9 and 10 of the thickness of the layer corresponds to ..

40

the slit of the through-pass layer located in the chip sorting zone. In the side wall 2 above the stop 9,

10 thickness of the layer is made window 13.

45

The device may be provided with discharge means in the form of disks 15 mounted on the drive shaft 14 alternating with sorting disks 5 closest to the side wall 2. The disks 15 are rotated in the opposite direction to the disks 5. The discharge means can also be made in the form of an inclined plate, a cylindrical brush, or otherwise (not shown). The unloading-55 mu means 14, 15 is adjacent to the bunker 16,

The chip sorting device operates as follows.

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five

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five

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Inside the housing 1, chips are fed to the sets of rotating in the same direction, indicated by the arrows, the sorting disks 5 and the disks 7 of the shielding means. In the sorting zone between the disks 5 and 7, a layer of chips is formed, in which stratification occurs: fine chips settle, forming the lower part of the layer; Large chips are located in the upper part of the layer above the fine. Chip fractions with a thickness smaller than the gap between the adjacent sorting disks 5 are sifted between them and, depending on the number of fractions into which the original chips are divided, are removed from the housing 1 or are fed to the next-highest device sorting area. Due to the fact that the shafts L with sorting discs 5 are located with a slope of “/ (fig) not less than the angle of repose. Split like a loose body, a large fraction of chips, located in the upper part of the layer under the action of gravity sip, moves down and the limiter 9, 10 of the thickness of the layer through the window 13 is removed from the body K Next, the large fraction of chips, either directly or by unloading means, for example, the disks 15 rotating in the opposite direction to the disks 5 are fed into the hopper 16 or for further processing. The presence of the limiter 9, 10 stabilizes the thickness of the chip layer located in the sorting zone which cannot be greater than the height of ichitel 9, 10. The same chips Krupp wherein neprergano withdrawn from grading zone, which improves the conditions of the process and its effectiveness variation in the chip bed thickness grading when choosing optical zone. The maximum modes of the process or by changing its parameters can be carried out by turning the hinged plate 10 (Fig. 2).

Claims (4)

1. A device for sorting chips in thickness, including a body with a loading neck and side walls, one of which has a window for removing the unsorted chip fraction, located in the body between the walls parallel to the first and subsequent drive shafts with discs of working chips mounted on them surface mounted with a gap between them in such a way that the disks of each shaft enter the gaps of the disks of adjacent shafts, the shielding and load means, characterized in that The efficiency of the chip sorting process by stabilizing the layer thickness of the sorted chips is provided with a chip limiter adjacent to the sorting disks of the first drive shaft located near the side wall with a window, and the drive shafts are set so that the plane tangent to the working surface of the sorting disks, located at an angle to the horizontal plane of not less than the angle of the natural repose of the chips as a loose body 2. Device pop 1, characterized in that the limiter of the thickness of the chip layer is made in the form of a comb plate, in the hollows of which the sorting disks are placed, 3. The device according to claim 2, characterized in that the comb-plate is fixed hingedly, 4. Device according to, and 1, characterized in that the discharge means is adjacent to the sorting discs of the first drive shaft. i5. A device according to claim 3, characterized in that the discharge means is made in the form of a drive shaft with disks mounted on it, mounted rotatably in a direction opposite to the direction of rotation of the sorting disks. 1 View / i // 12 Yu  Rig.Z