SU1645322A1 - Apparatus for classifying chips by thickness - Google Patents

Description

one

(21) 4700744/12

(22) 04/18/89

(46) 04.30.91. Bup. sixteen

(71) Petrozavodsk center for scientific and technical creativity of Tarmo youth

(72) E.V. Shadilov, A.P. Cherachev, T.F. Lichutina, L. Koshkin,

V.A. Punhov, P.A. Tuulas and Mi. Polykovsky

(53) 676.1.021.2 (088.8)

(56) Patent ША Р 4377474, cl. 20H-27H, 1981.

(54) DEVICE FOR SORTING A SCREW ON A THICKNESS

(57) The invention relates to the pulp and paper industry, in particular to devices for sorting ashes by top, and improves the efficiency and efficiency when sorting conglomerated ashes by destroying conglomerates in the process of sorting increasing the yield of conforming chips and reducing the amount of good chips in the non-passage fraction. In zone 5, which has a wedge-shaped form, conglomerates experience compression and shear deformation, as well as additional destructive effects (both from the side of the rotary tubular disks 2 and the teeth of the reflective element. 4 eP, dr-ly, 8 silt .

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The invention relates to the pulp and paper industry, in particular to devices for sorting IRPY by thickness.

The purpose of the invention is to increase the efficiency and productivity when sorting conglomerated chips by understanding the conglomerates during the sorting process, increasing the yield of conditional chips and reducing the amount of usable ashes in the bypass fraction.

Lig-1 shows a device for sorting ashes, design options; nl fig. 6 - node I on sig.Z; on AI, 7 - view A on fig.Z; on league. 8 — node II in FIG. four.

A device for sorting chips in thickness includes mounted on a frame (not shown) sorting surface 1 in the form of a set of toothed disks on the surface of disks (not shown) attached to the drive shafts 3 of unidirectional rotation, with disks 2 of each cotton 3 being located between the disks 2 adjacent to it by the shaft 3, in between the calibrated clearances (not

kazayo The sorting surface can be made flat (Figs. 1.2, A and 5) or Y-shaped (Fig. 7). Above the sorting surface 1, for example, on the bed, a reflective element 4 is fixed, forming with the sorting

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surface I, tapering in the direction of transporting chips (in the case of a flat grading surface - in the direction of rotation of the disks 2: in the case of a U-oase grading surface - along the shafts 3) the zone of destruction of conglomerates 5. The reflective element 4 can be made in the form of a plate 6 , the free end of which you copy. the shape of the sorting surface 1 is flat or Y-shaped (-Fig.7-) and forms a gap a with it, comparable to the treadan particles of the non-passage Fraction, and the opposite end interacts with the stop 7, Plate 6 can be fixed and made of an elastic material (not shown). It is possible to install plate 6 by means of a hinge 8 and to make it spring-loaded SPM spring 9 or to supply it with a hinge mounted on a free CONPR bethin 6 (not shown, the role of npm foreign oil

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plate b). The reflective element 4 may also be made in the form of drive shafts 11 opposite to shafts 3 of sorting surface 1 of rotation with disks 12 or at least one massive drum 1 3 with a diameter greater than the diameter of disks 2 fixed with rotation on the lever 14. The drum 13 can be made both drive and not drive. Plate 6, discs 1 2 and rollers I3 of the baffle 4 can be made with teeth 15 on the working surface.

The thickness grading device operates as follows.

Chips containing a through passage, non-passage fractions and conglomerates (for example, frozen out) are spilled from s to sorting surface I. During transportation along the souring surface I from its loading to the discharge end (the direction of chips transport is shown by an arrow) the chip fraction with a particle thickness less than the size of the gaps between the rotating dns 2 passes through these gaps, passing the fraction. An impassable fraction with a particle thickness greater than the size of the gaps between the guide disks 2 and the chain conglomerates are retained on the sorting surface 1 and its rotating disks 2 are transported to the destruction zone of the conglomerates 5 between the sorting surface 1 and the reflective element 4. In zone 5 having wedge-shaped form, conglomerates undergo compression and shear deformation, as well as additional destructive effect both from the side of the rotating gear disks 2 and the teeth 15 of the reflective element 4, Destructive Under the action of shear compressive and shock loads, the conglomerates disintegrate into separate both conditional and non-condensation particles of chips. The conditioned particles pass through the gaps between the rotating disks 2 within the zone of destruction of the conglomerates 5, pouring into the passable conditioned fraction of chips. Subconditioned particles forming the non-conductive chip fraction pass through the gap and between the sorting surface

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The Tiao I and the free end of the reflector ™ of the element 4 and is retracted for further processing. Performing the reflective element 4 in the form of one or more massive 1J rollers provides more efficient, compared to plate 6, the destruction of chip conglomerates. In case the flail contains a relatively large number of conglomerates to or conglomerates is difficult to be destroyed, it is preferable to use an embodiment reflectively of element 4 in the form of a set of disks 12 rotating in the direction opposite to the direction of rotation of the disks 2. Oppositely rotating disks 2, 12 transfer to the conglomerates of chips in zone 5 additional shear stresses, contributing to their destruction. In addition, the cyclic movement of the sieve product in the zone L of the destruction of the

glomerates, preventing clogging .. zones 5 with wedged conglomerates, and an increase in the residence time in it of unbreakable conglomerates, which increases the efficiency of their destruction. neither If there are large particles that are not susceptible to crushing (chipping branches, indestructible conglomerates, stones, etc.) in the chips, they act on the reflective element 4, the latter is raised, turning in the hinge 8 and doing work against the elastic forces of the spring .. 9 or the weight of the counterweight ( the weight of the element 4, the elasticity of the plate b) increases the gap between the free end of the reflective element 4 and the sorting surface 1, through which large uncapable particles are removed from the crushing zone of conglomerates 5. Then the reflective el cop 4 by pruzhi- 45 chayuschees in that the reflective or the counterweight 9 is lowered, the position is fixed abutment 7v

Claims (5)

1. A device for sorting chips in a circular process, including a sorting surface in the form of a set of toothed disks mounted on parallel drive shafts of unidirectional rotation, with the disks of each shaft located between the disks of estimated shafts with it, forming a calibrated gap between them. e in order to increase the efficiency and productivity in the sorting of conglomerate chips, by destroying the conglomerates in the sorting process, increasing the yield of conditional chips and reducing the of good chips in the He-pass Fraction, the device is equipped with a reflective element placed above the sorting surface with the possibility of forming with it a zone of conglomerate tapering in the direction of transporting 5 chips. 2 The device according to claim 2, wherein the reflecting element is designed as a hinge. 0 but fixed spring loaded or fitted with a counterweight plate. 3. The device according to claim I, of which is that the reflecting element is designed as a set. 5 discs mounted on the drive shafts of the opposite relative to the shafts of the sorting surface vrashe-4 nor. 4. The device according to claim 1, about tl and 0 is often due to the fact that the reflective element is an element in the form of:. at least one roller fixed rotatably. 5. The device according to p. I, about t l and - its ny element is made with surface boches teeth on the ground (I Si U g gf sh 8 bets ZZЈSV9l YidA