RU2505397C1 - Plant for separation of birchbark from bast - Google Patents

Abstract

FIELD: woodworking industry.

SUBSTANCE: plant for separation of birchbark from bast comprises a frame, a separating device, a receiving hopper and receiving devices for bast and birchbark. The unit is equipped with two vertical splined shafts. On one of the splined shafts the ellipsoid-shaped rollers are fixedly mounted, along the generants of which the teeth and cavities are made. On the other splined shaft opposite the fixed rollers the similarly shaped rollers are located with the ability to change a position in the vertical plane. Both shafts have the ability of counterrotation through the belt drive from the electric motor.

EFFECT: improvement of quality of separation of birchbark from bast, reduction of power consumption of the process.

4 dwg

Description

The invention relates to the timber industry, in particular, to equipment for separating birch bark from the forehead.

Known technical solutions (AS No. 935297, AS No. 743867) containing a frame, a drum with loading and unloading windows, a rotor with knives, counter knives and a drive.

The main disadvantages of these structures is the high metal consumption and cumbersome structure.

There is a known technical solution chosen by the authors as a prototype (Installation for separating birch bark from the forehead. Koykov P.M., Luchenko Yu.A., Rozhentsov V.P., Zamyatin E.I .; AS of the USSR No. 1209442, class . B27L 11/02, 1986), including a bed, a separating drum, a receiving hopper and a receiving device for bast and birch bark, a working body and a drive, the working body is made in the form of a series of horizontal pairs of rollers having alternating along their generatrices and circles hollows and teeth, the pitch and height of which decreases for each subsequent pair along the direction odachi bark and inner bark, and the teeth of one roller of each pair are arranged in the depressions of another roller, and one roller of each pair is biased relative to the other.

The disadvantage of this device is the design complexity, high material consumption.

The technical result of the invention is improving the quality of separation of birch bark from the forehead, reducing energy intensity and improving the reliability of the structure.

The technical result is achieved by the fact that the device is equipped with two vertical splined shafts, while one of them has fixedly mounted ellipsoidal rollers, along the generatrix of which teeth and troughs are made, and on the other splined shaft opposite the fixed rollers are placed rollers of a similar shape with the possibility of changing position in the vertical plane, and both shafts have the possibility of counter-rotation by means of a belt drive from an electric motor.

The alleged invention is illustrated by drawings, where figure 1 presents a side view; figure 2 presents a top view; figure 3 shows a cross section of the device; figure 4 shows an ellipsoidal roller.

The alleged invention contains a housing 1 in the upper part of which a receiving hopper 2 is installed, and two vertical splined shafts are mounted inside the housing 1, while one of them 3 has fixedly mounted ellipsoidal rollers 4, the generatrix of which is made of teeth 5 and depressions 6, and on another spline shaft 7 opposite the stationary rollers 4 there are rollers of a similar shape 8 with the possibility of changing position in the vertical plane, while the shafts 3 and 7 are connected by a belt drive 10 to an electric motor 11, Lower body has ramp 9 and the separation drum 12, mounted on the frame 13, next to which are set for the receiving apparatus 14 and bast receiving device 15 for birch.

The installation for separating birch bark from the forehead is as follows. The birch bark to be separated is fed into the receiving hopper 2, then it moves to the first pair of rollers 4 and 8. When teeth 5 and troughs 6 of both rollers interact, the bark undergoes deformation, and the brittle bast layer is destroyed. After passing through the first pair of rollers 4 and 8, the crust falls on the second pair and the process of destruction of the bast and its separation from the birch bark continues. The entire mass of the bark, which successively passed through all the pairs of rollers, is then subjected to separation into birch bark and bast using a separating drum 12, into which it is guided along an inclined platform 9. After separation, the bast falls into the receiving device 1 4, and the birch bark receiving device 15 .

Birch bark and bast particles from the receiving devices 14 and 15 are subsequently sent to the following process streams

Using the proposed device can improve the quality of birch bark, simplify the design, reduce energy and material consumption.

Claims (1)

Installation for separating birch bark from the bast, including a bed, a separating device, a receiving hopper and receiving devices for bast and birch bark, characterized in that the device is equipped with two vertical splined shafts, while one of them has fixedly mounted ellipsoidal rollers, the generators of which teeth and troughs are made, and on the other splined shaft opposite the fixed rollers are placed rollers of a similar shape with the possibility of changing position in the vertical plane, both shafts being possible NOSTA counterrotation through belt transmission by a motor.

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