RU2350701C1 - Section of scutching machine for processing lint fibres - Google Patents

Abstract

FIELD: textiles.

SUBSTANCE: proposed section of a scutching machine for processing lint fibres contains a scutching drum, on whose circumference are placed beater plates, each of which has a deflector on the rear end, which is made in the form of a clamp and has a width, which increases in the direction of movement of the material along the drum. Part of the clamp with the longest length has an auxiliary deflector, whose one edge is fixed to the clamp, and the other is located under the rear side of the beater plate.

EFFECT: production of a long fibre and increase in effectiveness of removing chaff.

4 dwg

Description

The invention relates to the field of primary processing of bast fibers, mainly flax, and allows to increase the yield and quality of long fibers by stabilizing the tensile forces in the strands of fiber during bruising and improving conditions for removing bonfires.

Existing flax scuffing technology is based on the use of scaffold drums. With this technology, at the initial stage of beating in a linen shank, because of its great sharpness and, as a result, increased bending stiffness, considerable tensile forces arise in the runaway branch of the strand. This leads to fiber breakage and a decrease in the yield of long fiber. It is known that the greatest loss of fiber during scuffing is observed at the end sections of the strand [1]. Therefore, to reduce fiber loss, the rotational speed of the drum is reduced. It should be noted that a decrease in the rotational speed of the drums, while contributing to an increase in the yield of long fibers, nevertheless worsens the de-sharpening of the stems. Thus, in the process of scuffing, it is necessary to ensure the safety of the long fiber with the maximum removal of the fire.

To solve this problem, various technical solutions have been proposed.

A known construction of a section of a bobbin machine for processing bast fibers [2], comprising beater strips placed around the circumference and mounted on a horizontal shaft by means of crosses carrying knock-out grilles. Each beater bar has a visor located on the rear side and rigidly connected to the bar for supplying fiber to the planks of an adjacent drum, made in an arc of a circle. In this case, the visor has a width that increases in the direction of movement of the material along the drum.

The main disadvantage of this design is the inability to properly increase the tension of the ends of the processed strands.

Also known is the design of the section of the basting machine for processing bast fibers [3], comprising a bobbin drum with beater bars placed around the circumference, each of which has a visor located on the rear side, made in the form of a bracket and having a width that increases in the direction of movement of the material along the drum.

The main disadvantage of this design is the inability to create conditions for the removal of bonfires in the layer.

The technical solution [3] in essence is the closest to the claimed one and therefore can be selected as a prototype.

The technical task of the invention is to increase the yield of long fibers and increase the efficiency of removing bonfires from the fiber.

The stated technical problem is achieved in that in the section of the basting machine for processing bast fibers, containing a bobbin drum with beater strips placed around the circumference, each of which has a visor located on the back side, made in the form of a bracket and having a width that increases in the direction of material movement along drum, according to the invention, the section of the bracket with the longest length has an additional visor, one edge of which is fixed on the bracket, and the second is located under the back of the beater lanka.

The presence of an additional visor provides more efficient removal of bonfires from the raw layer. When the treble section operates, the additional visor, rotating together with the beat, creates an additional air flow in the beating field in the direction from under the back plane of the beat into the layer of strands located on the beat and on the staple section with the longest length. In addition, in the direction of movement of the clamping conveyor, strands of different lengths fall into the scutch section. In this case, the resulting air flow will deflect strands of different lengths at different distances from the center of rotation of the drum. As a result, the bulk density of the fibers in the section between the main beat and the section of the bracket with the greatest length will decrease, which will provide better conditions for the bonfire to exit the mass of strands with its subsequent removal.

In addition, the presence of a bracket and an additional visor will increase the tension of the ends of the processed strands and provide additional de-sharpening of the strands without overwhelming them. This, ultimately, will reduce the dynamic load on the processed material by reducing the number of revolutions of scuffing drums.

The invention is illustrated by drawings.

Figure 1 shows a diagram of a drum bobbin machine for processing bast fibers. Figure 2 shows a cross section BB of the trepidine section. Figure 3 shows a top view (view A) on the beater of the scutching drum. Figure 4 shows a cross section bb staples with an additional visor.

The drum of the bobbin machine contains a shaft 1, discs 2 and crosses 3 with beater bars 4 fixed on them. On the crosses 3 there are plates 5 to which the bars of the bogie grill are rigidly attached 6. Each beat bar is connected with the second third of the drum length (in the direction of movement of the material) 4 has a bracket 7 located on the back side and rigidly connected to it, which is attached to the crosses using brackets 8. In the section of the bracket with the longest length there is an additional visor 9, one edge of which is fixed to the bracket 7, and the second is located n under the back of the plank 4.

Section scutching machine operates as follows.

The washed stalks of bast crops (raw) with a clamping conveyor are introduced into the treatment zone. As a result of the rotation of the drums, the slats 4 and the strips of the knockout lattice 6 act on the bast-fiber material, which leads to its removal from the fire. Passing the first third of the drum, the layer of linseed contains a significant amount of bonfire. Therefore, to ensure the preservation of the fiber, the processing is performed using gentle impacts of beats with the usual design of scutching drums.

When processing in the second and third parts of the length of the drum, freed from a significant number of bonfires, the fibrous layer, having a lower mass, begins to interact with the working section of the bracket. In this case, the fibers in the layer as a result of interaction with the elements of the bracket experience additional working tension. This allows you to provide the necessary tension of the processed strands while reducing the number of revolutions of scaffold drums. In this case, the value of the technologically recommended tension of the processed linseed is achieved.

During operation of the bobbin machine, an additional visor 9 creates an air flow in the bobbing field, namely, from under the main beat to the layer section between the beat and the bracket. In the direction of movement of the clamping conveyor, strands of different lengths fall into the scraper section. Therefore, the resulting additional air flow deflects the short strands more than the long ones, as a result of which these strands begin to move relative to each other, thereby providing additional shaking and rarefaction of the layer. Its bulk density decreases, which contributes to a better de-sharpening of the strands.

The use of the proposed section of the bobbin machine for processing bast fibers can increase the yield and quality of long fibers, while not requiring large capital costs for implementation.

Information sources

1. Bezbabchenko A.V., Pashin E.L. Dependence of fiber losses during flax flaxing on its properties and processing conditions // Bulletin of the All-Russian Research Institute for Processing Bast Crops. 2003, No. 1.

2. Patent for invention RU No. 2165487. Section of the forehead scutching machine, class D01B 1/16, 1/26. Publ. 2001. Bull. No. 11.

3. Patent for invention RU No. 2250940. Section of basting machine for processing bast fibers, cl. D01B 1/16, 1/26. Publ. 2005. Bull. No. 12.

Claims (1)

Section of the bast fiber processing machine, comprising a bobbin drum with beater bars arranged around the circumference, each of which has a visor located on the rear side, made in the form of a bracket and having a width that increases in the direction of movement of the material along the drum, characterized in that the bracket section with the longest length has an additional visor, one edge of which is fixed on the bracket, and the second is located under the back of the beater bar.

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