SU961792A1 - Unit for separating loose materials - Google Patents

Description

(54) INSTALLATION FOR SEPARATION OF BULK MATERIALS

one

This invention relates to a technique for classifying the separation of lumpy bulk materials, such as coke, and is intended for use in the coking, coal, power, and other industries.

A device is known that includes a housing, a distribution grid, an overflow threshold, a loading hopper with a paddle feeder, a layer-laying machine, a scraper conveyor, discharge chutes and a closed air circulation system 1.

The disadvantage is a significant clogging of large classes of small.

The closest in technical essence and the achieved result to the proposed is a device, including an apparatus for separating materials, in a fluidized bed, which consists of a body, a cone-shaped distribution grid, overflow threshold, a disk with shovels, a closed air circulation system, unloading devices 2.

The disadvantage is the poor quality of separation of bulk materials.

The purpose of the invention is to improve the quality of separation of bulk materials.

The goal is achieved by the fact that the installation is equipped with an additional apparatus for separating bulk materials, a device for pre-separation of material into two streams, which consists of a separation chamber, an inclined air distribution grille, adjustable damper, loading and unloading devices of large, medium and small fractions and grooves, connecting discharge devices of coarse, medium and small fractions with primary and secondary apparatus for the separation of materials in a boiling Loe.

The drawing shows the proposed device.

The installation consists of a device 1 for pre-separation of material, two identical apparatus operating in parallel, each of which includes a housing 2, having annular troughs 3 and 4, discharge nozzles 5 and 6, gates 7, nozzle 8 for supplying air, a cone-shaped distribution

poiueTKH 9 with blades, above which is a disk 10 with blades 11 mounted on a shaft 12 mounted in bearings 13; the overflow threshold 14, the cover 15. On the cover 15 there is a loading chute 16, the lower part of which is made in the shape of a truncated cone.

The cover 15 with a partition 17, having a diameter smaller than the internal diameter of the housing 2, forms a cavity 18 connected to the working volume 19 and to the cavity of the nozzle 20 intended for exhausting air.

Pipe 8 for air supply and pipe 20 are interconnected by a closed air circulation system.

The housing 21 of the material pre-separation device comprises a feed chute 22 and a discharge chute 23 and 24 associated with the feed chute 16.

In addition, nozzles 25 and 26 are mounted on the casing for supplying and discharging air, interconnected by a closed air circulation system.

Inside the housing there is an inclined grate 27 with openings for the passage of air and a shut-off valve 28, which separates the flows of a class of material that rises above the grating and moves along it. The cutter has a tilt adjustment for adjusting the installation when separating the specified classes.

The installation works as follows.

Coke, which requires separation, is fed through chute 22 to the inclined grid 27. Air is blown out of the grid opening, and its head is adjusted to raise certain classes of material above the grille. The cutter 28, which is set to separate the given classes, separates the coke into two streams, which are channeled through chutes 23 and 24 into identical apparatus for separation in a fluidized bed. Each of these devices divides the flow of material into two classes.

Along the loading chute 16, the material falls on the tapered side of the disk 10 and, being evenly distributed in all directions, enters the distribution grid 9, through which air is supplied under pressure, through which the material begins to boil, moving to the periphery of the distribution grid.

The pressure, air in each device is different and depends on the class of material poured over the threshold.

The shaft 12, rotated in bearings 13, transfers the rotation to the disk 10, with which the blades 11 also rotate. The blades diverging from the disk in spirals push the boiling material, which slides along the profile of the blades and moves to the discharge chutes 3 and 4 The material raised above the overflow threshold 14, which has an adjustment at a height, flows through it into chute 3, and the material that does not reach the top of the threshold, leaves the zone of action of air entering through the grille, and falls into chute 4. According to gutters 3 and 4 divided product flows into discharge patra ki 5 and 6, of which falls on the corresponding conveyor.

Depending on the performance of the device, the outlets of the nozzles 5 and 6 are adjusted by means of the tongs 7 in order to reduce the access of atmospheric air.

inside the apparatus.

The air from the boiling zone through an annular gap formed by the wall of the housing 2 and the partition 17 is sucked into the cavity 19, and then through the pipe 20

into the fan, which pumps it back into the working cavity of the apparatus.

The use of this plant for the separation of bulk materials will improve the quality of separation, improve productivity by 20-25% and yield

grades 25. mm.

Claims (2)

1. USSR author's certificate number 366892, cl. On 07 May 4/08, 1973. 2. USSR author's certificate for application number 2888866 / 29-03, cl. B 07 W 4/08, 1980 (prototype).