SU1438860A1 - Pneumatic classifier - Google Patents

Abstract

The invention relates to devices for the pneumatic classification of polydisperse impact materials and can be used in the building materials industry, mining, chemical, and other industrial sectors. The purpose of the invention is to increase productivity ,, and the quality of separation due to uniform distribution of the mixture in the separation channels, in the housing (K)

Description

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1, packages of vertical inserts (B) 4 are installed, forming vertical separation channels 5, the number of which increases in the direction of the air flow. Inclined flanges 6 are attached to B 4, and B 4 unloading strips are installed under B 4 in the horizontal plane. Gaps symmetrical to the vertical axes of the channels 5 are formed between the sides of the strips 7. which is attached boot P. In the lower part 2 to 1

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The invention relates to devices for the PLL pneumatic classification of 1 SAG polydisperse bulk materials and can be used in the improvement of building materials, mining and processing, and chemical to other folk industries.

The purpose of the invention is to increase the productivity and quality of separation due to the uniform distribution of air flow and material in the separation channels.

FIG. 1 shows the classifier, a general view of FIG. 2, the same, side view, FIG. 3 is a section A-A in FIG. 1.

The pneumatic classifier consists of case 1, which is formed by lower 2 and upper 3 parts. In case 1, packages of vertical inserts 4 are installed, forming vertical separation channels 5, Inclined shelves 6 are attached to vertical inserts 4 V-shaped. Between the sides of the strips 7 there are gaps a, symmetrical with respect to the vertical axis of each separation channel 5. The size of the gap a. Can be adjusted. To this end, the side walls of the V-shaped strips 7 can be connected to collections of t1 of a large fraction, collections of intermediate fractions are attached to the wall K 1. The source material is fed through feed P to P 9 where it is picked up by air flow and transported to channels 5. In the zone between lanes 7 and P 9, large particles are released, which are discharged into collector 11. The remaining material passes into the gaps between lanes 7 and under the action high air flow rates are partially dispersed. The material of the larger fractions is discharged into collections of intermediate separation products. The females have a thin product that is removed to the cleaning system. 3 il.

hinged between each other. On the upper part 3 of the housing 1 there is an outlet 8 of the air outlet and the thinnest product of separation. In the lower part 2 the air inlet 9 is vertically mounted, on which the feed inlet 10 of the source material is attached. In the lower part 2 of the housing 1 there are large-scale collections 11.

The strips 7, installed between the stacks 12 and 13, together with the plates 14 form internal duct separation channels with their inner surfaces. The plates 14 are installed with a slope to the holes in the wall 13, on which, to cover these holes, collectors 15 intermediate fractions are attached.

Pneumatic classifier works as follows.

The source material is fed through the loading nozzle 10 into the air inlet nozzle 9, where it picks up air flow and is transported to the separation channels 5. In the area between the strips 1 and the nozzles 9, due to a decrease in the air flow rate, the largest particles are accumulated, which rolls along side walls, get into the bunker 11. Pstvtiys material with air passes through the gaps between the V-shaped strips 7, where under the action of much higher speeds of air flow there is a partial dis ergirovanie particle aggregates. When moving along the separation channels from the dust-air flow, the material of larger fractions falling onto the plates 14 installed in V-shaped strips, through KOTopbW through the holes in the wall 13 enters the collection of 15 intermediate separation products. Thinner fractions with air flow enter the next section of separation channels, where similar processes take place. The thinnest product with air is directed through nozzle 8 into the fluid cleaning system.

During the operation of the classifier with the fan mill, the dusty flow from the mill 21 is directly supplied through the pipe 9, while the pipe 10 of the feed is blocked.

The number of sections and separation channels in them is determined by the required

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the number and size of intermediate fractions, as well as the performance of the classifier.

Claims (1)

Invention Formula A pneumatic classifier that includes a housing with feed and air supply nozzles and collectors of finished products, inside of which there are packages of vertical inserts, which have inclined shelves and form separation channels, and V-shaped discharge strips, characterized in that in order to increase the productivity and quality of separation due to the even distribution of the air mixture in the separation channels, the discharge strips should be installed in the horizontal plane under the inserts with the possibility of The gap is symmetric with respect to the vertical axes of the gonnial-channel separators, and the number of separation channels increases in the direction of the flow of the air flow. utf.oSHiitu I Marngfliate Editor V. Petrash Compiled by Yu.Pravotorov Tehred A. Kravchuk Proofreader N. Korol Order 6005/12 Circulation 569 VdPi State Committee of the USSR for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., d. A / 5 Fi9. $ Subscription