SU743867A1 - Apparatus for separating birch bark from bast - Google Patents

Description

one

The invention relates to the forest industry, in particular to equipment for separating bark from bast.

A device for separating birch bark from the surface of a log is known, consisting of a frame, a rotor and a drive 1.

It is also known a device for separating bark from bast, comprising a drum with loading and unloading windows, a rotor with knives, anvils mounted on the inner surface of the drum, and an actuator 2.

A disadvantage of the known devices is the low quality of separation of the bark from the bast.

The purpose of the invention is to increase the quality of separation of birch bark from bast.

This is achieved by the fact that the drum has additional discharge windows, which are made in the form of vertically directed isosceles triangles, the knives are arranged on the rotor in a shahmatical order, and the counter blades are mounted on the isosceles of the triangular windows.

FIG. 1 shows schematically a device for separating birch bark from bast; in fig. 2 - rotor with knives; in fig. 3 -

inner drum surface with counter knives.

A device for separating bark from bast includes a drum 1, on top of which

5, the boot 2 is executed, and the boot - the unloading 3 windows. Inside the drum 1, a rotor 4 with knives 5 is placed. On the inner surface 6 of the drum 1, counterblades 7 are fixed, which are located on the nobrenal sides of 8 triangular windows 9 located on the side of the loading window 2, with the tops 10 of triangular windows 9 facing the direction of rotation of the rotor 4 on which knives 5 are laid in chess order.

To remove the bark from the knives 5, the comb 11 is fixed in the zone of the discharge window 3.

The operation of the device for separating the bark from the bast is carried out as follows.

Birch-bark with bast in the form of tapes twisted in a spiral is fed into the loading window 2 of drum I. When the rotor is turned on, 4 knives

25 5 seize the birch bark ribbons and drag them between the counter knives 7. Since the distance between the counter needles 7 is variable, the bast is cleared gradually. After that, particles of bast come

in the triangular windows 9, and the peeled private birch bark with the help of the comb 11 is removed through the discharge port 3, and the cyclic cell „1” is repeated.

Formula II and 3 about b e and e

A device for separating 1 bark from a barrel, including a drum with loading and unloading windows, a rotor with scissors, an anvil mounted on the inner surface of the drum, an actuator, different in bodies, which, in order to improve the quality, are separated from bast, drum

It has additional unloading windows, which are made in the forward direction of the upper section of the direction of the Bpanier Rotor of the isosceles triangles, the knives are arranged on the rotor in a staggered order, and the counter blades are mounted on the equilateral sides of the triangular windows.

Source of information accepted in the examination

1. USSR author's certificate number 517492, cl. In 27L 11/02, 1975.

2. USSR author's certificate number 483252, cl. In 27L 11/02, 1973.

Claims (1)

A device for separating birch bark from the forehead, including a drum with loading and unloading windows, a rotor with knives, a lock mounted on the inner surface of the drum, and a drive, characterized in that, in order to improve the quality of separation of birch bark from the forehead, the drum has additional unloading windows, which are made in the form of isosceles triangles directed by the vertices towards the direction of rotation of the rotor, the knives are staggered on the rotor, and the counter-knives are mounted on the isosceles sides of the triangular o he said.