SU1364378A1 - Installation for separating bast and birch bark that are not interconnected - Google Patents

Abstract

The invention relates to processing equipment for the separation of bast and bark particles. The aim of the invention is to increase the separation efficiency by performing a clean-up operation in a single chamber. The installation is characterized in that two-stage sieves 21 and 22 are mounted in the separation chamber 6, which are inclined towards each other and form compartments 29.30 symmetrically located on the sides of the chamber 6 with additional chutes 8 and 10. The screens of the central estrus 12 are made in the form of a gable 18 sieve , above which are located the upper stages 23 and 24 of sieves 21 and 22, 2 Il.

Description

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The invention relates to technology through a distribution nozzle 5. a equipment that can be used in plywood mills for the final separation of bast and bark particles.

The aim of the invention is to increase the separation efficiency by performing a cleanup in a single chamber.

Figure 1 shows the proposed installation, the overall look; figure 2 - section aa in figure 1.

The separation separation unit contains a feeder 1 for feeding the bast and bark mixture, a distribution chamber 2 with an accelerating conveyor belt 3, a fan 4 with an air distribution pipe 5, a separation chamber 6 with an air duct 7 for removing dust, air, and leakage 8-10 for removing bast and chutes 11 and 12, designed to remove birch bark, having a common discharge port 13, a cyclone 14 from 25 to (5-5-5) mm, and therefore twisting tfcoy 15, bunker 16 and various aerodynamic characteristics - air ducts 17 Central ečka sticks, their separation (classification 9 for bast provided with screens vtol- qi) by size horizontal

the air jet occurs at a speed of 30 particles that freely fall into the air jet. At the same time. Particles.

In the separation chamber 6, the air stream accomplishes the bottom of the function: a transport for a birch bark, which is evenly distributed by an air stream along the length of the chamber 6, sorting for a bast, which is classified by air stream according to the size of the streams 8–10. birch bark falls first on the gutter sieve 18 and the upper steps 23 and 24 of the sieves 21 and 22, and then on their lower steps 27 and 28. At) 5 of this, the bark particles, having dimensions of an area that are much larger than the diameter of the slopes of the stingrays 19 and 20, roll them down and through labyrinth passages 25 n 26 enter the Pi 12 chutes and then leave the installation through a common discharge opening 13. As for bast particles, which have different sizes, for example, from (0.5-0.5-0.5) mm

and

20

The slopes 19 and 20 are installed with a slope along the length of the separation chamber 6. The latter are equipped with two-stage sieves 21 and 22, inclined towards each other. The upper stages 23 and 24 of the sieves 21 and 22 are located above slopes 19 and 20 of the central estrus 9 and form, on its two sides, open labyrinth passages 25 and 26 with two estrus 11 and 12, the shrednanmer, with a size (0,50,50,5) mm, which have a lower speed of wind, is delivered by the air stream in

 „The end of the separation chamber 6 and, you-. the air jet falls onto the upper stage 24 of the sieve 22. Rolling over it, particles of bast fall through the holes in the screen assigned to the spawn. . Lower sta- 40 in heat 10 for small bast. Penalty particles 27 and 28 of sieves 21 and 22 are also larger-sized bast, for example, (1, 5 1, 5-1.5) mm; I fall on the lower edge of the upper step 24 of sieve 22 and stingray 20 and who do not have time 45- through through their holes in the chutes 10 and 9 for bast, due to their

as the upper stages 23 and 24 and the slopes of the perforated screens are inclined to the horizontal plane at least at an angle of 45. Two-stage sieves 21 and 22 form compartments 6, 29 and 30, symmetrically located on the sides of chamber 6, with additional chutes 8 and 10.

The installation works in the following way.

Subject 1e to separation, unrelated particles of bast and bark, are fed by feeder 1 to accelerating conveyor belt 3, and then to separation chamber 6 and enter the zone of action of the sorting air stream, which is created by fan 4 and is fed to chamber 6

birch bark particles scatter along them down to the lower step 28 of the sieve 22 and, moving along it, fall into

gQ estrus 10 dl bast. Large chunks of the bast, for example, having a size of (5-55) mm, having a greater speed of avenues, fall out of the air stream at the beginning of the separation chamber 6 and then fall onto the upper sieve stage 23 of 21. Sling down sieve 21, the indicated particles of bast fall through its holes into the chute 8 for large bast. Particles less croup0

through the distribution pipe 5.

25 to (5-5-5) mm, and, consequently, different aerodynamic characteristics, their separation (classification) by size in horizontal

In the separation chamber 6, the air stream accomplishes the bottom of the function: a transport for a birch bark, which is evenly distributed by an air stream along the length of the chamber 6, sorting for a bast, which is classified by air stream according to the size of the streams 8–10. birch bark falls first on the gutter sieve 18 and the upper steps 23 and 24 of the sieves 21 and 22, and then on their lower steps 27 and 28. At) 5 of this, the bark particles, having dimensions of an area that are much larger than the diameter of the slopes of the stingrays 19 and 20, roll them down and through labyrinth passages 25 n 26 enter the Pi 12 chutes and then leave the installation through a common discharge opening 13. As for bast particles, which have different sizes, for example, from (0.5-0.5-0.5) mm

and

20

The air jet occurs at a velocity that is not free of particles falling into the air jet. At the same time. Particles.

Nanometer, with a size (0,50,50,5) mm, which have a lower speed of convection, is raised by an air stream in

birch bark particles scatter along them down to the lower step 28 of the sieve 22 and, moving along it, fall into

gQ estrus 10 dl bast. Large chunks of the bast, for example, having a size of (5-55) mm, having a greater speed of avenues, fall out of the air stream at the beginning of the separation chamber 6 and then fall onto the upper sieve stage 23 of 21. Sling down sieve 21, the indicated particles of bast fall through its holes into the chute 8 for large bast. Particles of smaller size than (5-5-5) mm, falling on the lower edge of the upper stage 23 of the sieve 21 and skate 19, and not having time to fall through their holes in the chutes 9 and 8 for the bast, due to their pick-up by the particles of birch bark down to the bottom stage 27 of the sieve 21 and, moving along it down, fall into the chute 8 for the large bast. The average particles of the bast, ranging in size from (222) mm to (3.5 3,5 3.5 3.5) mm, enter from the air jet above the gable 18 and, falling down its slopes 19 and 20 downward, fall into the holes and enter the central part Chku 9 for Luba medium size. Thus, in the proposed installation, bast particles are classified by size, i.e. separation of particles of phloem by three chutes 8-10.

The proposed installation provides high-quality separation of bast and bark, regardless of the magnitude of their humidity and the magnitude of the differential

five

Claims (1)

 moisture between the bast and bark materials. Invention Formula Installation for separating unbonded bast and bark materials, including a feeder, a distribution chamber with an accelerating conveyor belt, a fan 0 with an air distribution pipe, a separation chamber with an air duct to remove dusty air with chutes for separated materials, which are centrally provided with screens , -% cyclone with unwinding snail, air ducts and bunker, about tl and - so that, in order to increase the efficiency of separation due to the implementation of cleaning in one of the chambers In the last-stage mounted rescheta forming symmetrically raspolozhe5 | nye chamber compartments on the sides with additional chutes, and central heat shields are formed as gable rescheta above which are located the upper retet stage. five 0