SU1033205A1 - Apparatus for separating tree green material from chips - Google Patents

Description

The invention relates to the timber and woodworking industry and can be used in the sorting of chips and green wood obtained from logging waste, for example. crushed crown of coniferous trees, branches and vereshn.

A device for separating wood greenery is known, comprising a tilting swivel drum with loading and unloading devices, an air system and a Cll cleaning unit.

A disadvantage of the known device is its complexity,

The closest to the invention in its technical essence and the achieved result is a device for separating wood greens from. chips, including two rotating drums, inside of which partitions are installed, which divide the drums into two parts with different pressures, and the exhaust system of the air duct 2 is connected to one part of each drum.

The disadvantage of this device is the poor quality of the separation.

The purpose of the invention is to increase the quality of separation by mixing the material being sorted.

This goal is achieved by the fact that in a device for separating wood greenery from chips, including two rotating drums, inside of which partitions are installed, separating the drums into two parts with different pressure, the exhaust duct system, the drums are installed coaxially, while edges, located in a helix on its inner surface.

The coaxial arrangement of the drums makes it possible to reduce the dimensions of the sorting device.

With the coaxial arrangement of the drums, the supply of the sorting mass is simplified, while there is no need to impose strict requirements on the dosage of the fed mass.

The coaxial arrangement of the drums and their rotation in one direction makes it possible to significantly increase the speed of rotation of the drums and, accordingly, to increase the productivity of the sorting device.

The presence on the inner side of the outer non-perforated drum of the ribs located along a helical line allows the sorted material to be mixed, and thus the quality of the sorting is greatly improved.

The ribs are used to move the material intended for sorting. Due to the helix ribs, the all-surface of the inner drum participating in the sorting, for, is fully implemented, i.e. productivity and quality of sorting grow. .

FIG. 1 shows a device for separating wood greenery from chips, a general view; in FIG. 2 shows section A-A in FIG. one.

0 The device consists of two inclined and rotary external loading 1 and internal sorting 2 drums. The outer loading drum 1 is made in the form of a pipe with ribs 3 located on its inner surface along a helix, and the lower part of the drum 1 is divided by a partition 4. An exhaust duct system is connected to the end of the sorting drum 2. The internal sorting drum 2 is a mesh a rotating drum, divided into two different cavities by a stationary partition 5, which also passes through the center of the opening 6 of the air duct and divides this opening b into two equal parts, one of which is closed 7. The rotational movement of the loading drum 1 is carried out by the drive 8, and the sorting drum 2 is driven 9. The loading of the drum is carried out by the loading device 10 through the end of the drum. The unloading of the sorted material proceeds along the trays 11. 1, the cleaning class of the sorting drum 2 is equipped with brushes 12. The loading drum 1 is mounted on the support rollers 13.

A device for separating wood greenery from chips is as follows. -.

The crushed wood greens, containing separate needles and the crushed particles of branches and vershinok, are fed from the raised end of the device through the loading device 10 into the cavity of the loading drum 1 for an open opening

0 air duct systems where reduction is created. Drives 8 and 9 are turned on. and both drums 1 and 2 begin to rotate in the same direction at their desired speed. In the other cavity is sor-,

5 of the 2, where the plug is installed, the normal atmospheric pressure is constantly maintained.

Entirely chopped wood greens, falling into drum 1, with ribs 3 rises, light needles and pine feet are attracted and stick to small holes in the surface of sorting drum 2 due to air suction and -transported air through drum 2

another cavity of the drum 1, in which the normal atmospheric pressure is created, where they fall off and fall into the discharge chute 11.

The particles of larger fractions are constantly entrained by the fins 3 upwards, and the agitating of the unsorted pulp occurs. Light needles, section smiling

from the total mass, they are attracted to from the surface of the drum 2, and the large particles fall, fall into the discharge chute 11, and are carried out by tilting the drum outward.

Thus, the use of the proposed device will improve the quality of separation of wood pulp from flail, v

Claims (1)

DEVICE FOR SEPARATION OF WOOD GREEN FROM THE CHAIN, including two rotating drums, inside of which there are partitions separating the drums into two parts with different pressures, an exhaust duct system, characterized in that, in order to improve the quality of separation by mixing the sorted material, the drums are installed coaxially, while the outer drum is provided with ribs located along a helical line on * its inner surface.