RU2388853C1 - Section of thresher for processing fibre crops - Google Patents

Abstract

FIELD: machine building. ^ SUBSTANCE: section of threshing machine for processing fibre crops consists of threshing drums on circumferences of which there are arranged rasp bars secured on horizontal shaft by means of cross pieces. The cross pieces bear under-rasp bar grates. Each rasp bar is equipped with an apron arranged on back side and rigidly connected with the bar. The working edge of the apron is wavy-shaped, while the apron proper is installed at angle varying along length of the drum relative to plane of the under-rasp bar grate. ^ EFFECT: raised output of long fibre and increased efficiency of removing boon and unclamped strands during processing. ^ 4 dwg

Description

The invention relates to the field of primary processing of bast fibers, in particular to devices for machining bast-fiber materials, and allows to increase the yield and quality of long fibers.

Existing technologies for producing long fibers are based on the use of the double-sided scuffing process by alternately treating butt and apical sections of stems. It is known that at the initial stages of the beating process, the amount of waste is greatest. This is due to the fact that at the initial stages of processing, raw flaxseed is very sharp, the fibers are tangled and disoriented. Thus, differentiation of the process by processing intensity is required.

This problem is relevant and its solution is of practical importance. To solve it, various technical solutions have been proposed.

A known construction of a section of a bobbin machine for processing bast fibers [1], comprising beater strips arranged around a circumference and fixed to a horizontal shaft by means of crosses carrying knock-out grids. 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 effectively enrich the strands in the initial stages of processing.

Also known is the design of the section of the basting machine for processing bast fibers [2], comprising bobbing drums with beater strips placed around the circumference, mounted on a horizontal shaft by means of crosses carrying knock-out grilles, each beater bar has a visor located on the back side and rigidly connected to the bar. The width of the visor increases in the direction of movement of the material along the drum.

The main disadvantage of this design is the impossibility of creating conditions for removing strands of raw flaxseed in the conveyor that are not pressed in the conveyor.

The technical solution [2] in its 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 and unclamped strands during their processing.

The stated technical problem is achieved by the fact that in the section of the basting machine for processing bast fibers, containing bobbing drums with beater strips placed around the circumference, mounted on a horizontal shaft by means of crosses carrying knock-out grilles, each beater bar has a rear side and is rigidly connected to the bar visor, according to the invention, the working edge of the visor is wavy, and the visor itself is installed with an angle varying along the length of the drum relative to the plane lattice.

The wave-like shape of the back visor provides the occurrence of combing effects due to the protrusions of the wave-like edge. Interacting with the strands of the layer, they will ensure the removal of unclamped strands from it. In addition, the relative movement of the sections of the layer relative to each other in a plane perpendicular to the axes of rotation of the drums is ensured. Due to this, the layer of raw will loosen, which in turn will contribute to an easier exit of the fires from the layer.

Changing the angle between the plane of the padded grill and the plane of the visor along the length of the drum will allow differentiation by the intensity of shaking of the strands and the removal of unclamped strands from them during the processing of the material, i.e., along the length of the bobbin drums.

The invention is illustrated by drawings.

Figure 1 shows a diagram of a drum bobbin machine for processing bast fibers.

The drum consists of a shaft 1, crosspieces 2 with beats 3 fixed to them, to which beater strips 4 and striker bars 5 are attached. Figure 2 shows a section A-A of the section of the bobbin machine. Figure 3 presents a section bB section of the bobbin machine. Figure 4 presents a top view of the beater bar with a visor, the edge of which has a wavy shape.

The proposed section of the bobbin machine can be used for preliminary bumping before the final sanding by means of two-sided bobbing.

The operating procedure of the section of the bobbing machine is as follows: the raw layer 6 after the milling machine enters the clamping conveyor 7 and is processed by beating the drums with beats. The conveyor moves forward and moves the material along the machine. The drums rotate in a direction away from the clamping point of the material being processed. During processing, the material experiences shaking effects, which leads to the removal of the bulk fire from the raw layer with simultaneous straightening and parallelization of the strands. In addition, conditions arise for the removal of unclamped strands, which significantly enriches the raw layer.

Reducing the content of bonfires in the material before the main scuffing will positively affect the quality of the final product - long fiber. When using this device, material with a lower content of bonfire will fall into the bobbin machine. This will provide an opportunity to reduce the intensity of impacts during the main scuffing, which in turn will increase the yield of long fiber.

The parallelization and straightening of the strands of raw material carried out in this method will reduce the angular disorientation of the stems in the layer, and therefore, increase the suitability of the stalk layer for scuffing. The higher the suitability of the layer for beating, the greater the proportion of stems will fall under the clamping conveyor of the main (installed after the proposed) beater. As a result, the yield of long fiber will increase.

A change in the angle between the plane of the beater bar and the plane of the hammer lattice along the length of the drum will enhance the degree of differentiation of the intensity of impacts on the material. This is achieved due to the gradual inclusion in the work of the elements of the webs through interaction with a strand of wave-like protrusions of the back visor. At the same time, the nature (their intensity) of the impacts will change in the direction of the material. In addition, there will be a movement of the sections of the layer relative to each other in a plane perpendicular to the axes of rotation of the drums, due to the wavy shape of the back edge of the visor (figure 4). This will contribute to further intensification of flax processing and more effective removal of the bulk fire.

Thus, the use of this section of the bobbin machine will increase the yield and quality of the long fiber, while not requiring large capital costs for implementation.

Information sources

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

2. Patent for invention No. 2250940 Ru. 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 bobbing drums with beater strips arranged around the circumference and fixed to the horizontal shaft by means of crosses carrying kneeling lattices, each beater bar has a visor located on the back side and rigidly connected to the bar, characterized in that the working edge the visor is wavy, and the visor itself is installed with an angle varying along the length of the drum relative to the plane of the knockout grill.

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