SU1585017A1 - Arrangement for sorting out granular materials - Google Patents

Abstract

This invention relates to the sorting of granular materials in the mining and building materials industries. The goal is to improve the quality of classification. For this, the loading device is made in the form of a vertical channel (VC) 1 mounted for movement in a vertical direction. Wall 3 VK 1 is fixed by means of hinges 4 in its upper part. The distance between the axis of the VK 1 and the axis of the rotary thrower (PM) 5 located below it is 0.45-0.6 of the radius of PM 5. The latter is made in the form of disks 6 mounted on the shaft 7 with longitudinal shock plates (P) fixed between them 8. The width of the P 8 is equal to 0.05-0.09 of the diameter of the PM 5. Before the loading device with the ability to move in the tangential and radial relative to the PM 5 directions, the air flow regulator 10 is installed in the form of an envelope PM 5 screen. At the same time PM 5 has a casing 9 with receivers of 11 fractions. Their walls 12 are made in the form of partition walls concave toward the PM 5, which are installed stepwise with increasing height as they move away from PM 5. By adjusting the angle of movement of the VK 1 by rotating its walls 3 in the hinges 4, the width and flux density of the feed material is changed. The regulator 10 creates a vacuum in which the grains are not deflected and acts on the material with an air stream that distributes the fraction around the perimeter of the rotor. After entering the P 8, the grains move to the periphery, descend from P 8, and are sent to the receivers 11. Walls 12 shorten the range of grains. 1 il.

Description

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in channel 1, the distance between them, which is 0.05-0.09 D, increases and the flux density decreases. By adjusting the angle of movement of the channel 1 by rotating its walls in the hinges 4, the width and density of the flow of the feed material are changed. The air regime is changed at the place of the flow of material to the rotor thrower 5 using the air flow adjuster 10, creating a vacuum at which the grains do not deflect or affect the material by the air flow; the fraction is distributed around the perimeter of the rotor, when small grains fly out into the separation space at lower angles. The selection of the air regime is carried out depending on the shape of the grains and the size of the starting material, its

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rotary thrower.

In addition, the implementation of a loading device in the form of a channel is necessary in the proposed device in order to completely eliminate the air flow to the material by an adjustable envelope of the rotor by a concave screen regulator. Therefore, the walls in the proposed device are made with regard to their main and significance — the enclosing function: the loading device is fixed on the one hand, with the possibility of providing both a full opening and a completely blocked gap between the rotor-bending wall of the housing and, on the other hand, at the same time ensuring a constant distance from the axis

and which is 0.05-0.09 D

rotary thrower.

In addition, the implementation of the loading device in the form of a channel is necessary in the proposed device to completely eliminate the impact on the material by air flow, which is controlled by the envelope of the rotor by a concave screen-regulator. Therefore, the walls in the proposed device are made with regard to their main purpose — the enclosing function: the loading device is fixed on one side, with the possibility of providing both a full opening and a fully closed gap between the body wall of the rotor envelope, and on the other hand, constant distance from axis

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the loading device to the axis of rotation of the rotor, which is necessary to maintain a predetermined interval of dependence of this distance on the radius of the rotor. In addition, the change in the cross section of the gap formed by the housing wall and the rotating rotor (plates), with a constant ratio of 1 / R, is aimed at ensuring the penetration of large grains into the rotor's rotation zone by an amount equal to the proposed width of the plates depending on the rotor radius (ratio a / R ).

Claims (1)

Apparatus of the Invention A device for sorting granular materials, including a loading device, a rotary thrower located under it in the form of disks mounted on a shaft with longitudinal shock plates fixed between them, mounted in front of the loading device ten 850176 with the ability to move in tangential and radial relative to the thrower of directions the air flow regulator in the form of an envelope rotary thrower of the screen, the casing with receivers of fractions whose transverse walls are made in the form of partitions bent in Metaler, characterized in that, in order to improve the quality of the classification, the loading device is made in the form of a vertical channel installed with the ability to move in the local direction, the walls of which are pivotally fixed in the upper part, the distance between the axis of the vertical channel and the axis of the rotary thrower being 0.45-0.6 of the radius of the rotary thrower, and the width of the impact plates is 0.05-0.09 of diameter r - 25 thorny thrower. 15 20