SU975121A1

SU975121A1 - Classifyer

Info

Publication number: SU975121A1
Application number: SU813293914A
Authority: SU
Inventors: Валерьян Николаевич Блиничев; Юрий Васильевич Маркичев; Виктор Александрович Крошкин; Олег Геннадьевич Зайцев
Original assignee: Ивановский Ордена Трудового Красного Знамени Химико-Технологический Институт
Priority date: 1981-05-25
Filing date: 1981-05-25
Publication date: 1982-11-23

Description

Изобретение относитс к классу классификаторов со спиральным потоком , предназначенных дл классификации твердых частиц, наход щихс во взвешенном состо нии в газообразной среде-носителе, и может быть использовано в легкой промлиленности дл получени , высококачественного регенерата. -,The invention relates to a class of spiral flow classifiers designed to classify solid particles suspended in a gaseous carrier medium, and can be used in light industry to produce high quality regenerate. -,

Известен классификатор, включаюпщй корпус, сепарацион.ную камеру с вращающимис стенками, регулируе- , мые лопатки, окно дл отвода мелкой фракции, загрузочную воронку и транспортер дл отвода крупной фракции 1.A classifier is known, including a housing, a separating chamber with rotating walls, adjustable blades, a window for draining the fines, a feed funnel and a conveyor for draining the coarse fraction 1.

недостатком вл етс то, что известное устройство эффективно раздел ет исходный материал на два класса с ограниченным спектром частиц мелкой фракции(О-4О мкм) и не способно расширить границу мелкой фракции до 200 мкм, так как твердые частицы материала при приближении к выгрузочному окну испытывают очень большие воздействи тангенциальных сил, под действием.которых они снова отбрасываютс к регулиру1ощим лопаткам , и только очень мелкие частицыthe disadvantage is that the known device effectively divides the starting material into two classes with a limited spectrum of particles of the fine fraction (O-4O µm) and is not able to expand the boundary of the fine fraction to 200 µm, since solid particles of the material undergo an approach to the discharge window very large effects of tangential forces, under the action of which they are again thrown to the adjustable blades, and only very small particles

(О - 40 мкм ) увлекаютс потоков воздуха в мелкий продукт.(O - 40 µm) entrains air flow into the small product.

Наиболее близким по технической сущности и достигаемому результату к предложенному вл етс устройство, включающее корпус, загрузочное приспособление , выполненное в виде камеры смешени , распределительные трубы , наружную камеру и сепарационную The closest in technical essence and the achieved result to the proposed is a device comprising a housing, a loading device made in the form of a mixing chamber, distribution pipes, an outer chamber and a separation

10 камеру с регулируемыми лопатками, патрубок дл разгрузки крупной фракции и центральный разгрузочный патрубок дл отвода мелкой фракции 21.10 a chamber with adjustable blades, a nozzle for unloading a large fraction and a central unloading nozzle for withdrawing a small fraction 21.

Недостатком вл етс низка про15 изводительность устройства.The disadvantage is the low productivity of the device.

Цель.изобретени - повышение производительности классификатора.The purpose of the invention is to improve the performance of the classifier.

Поставленна цель достигаетс тем, что классификатор снабжен аксиаль20 но-тангенциальными патрубками, соедин ющими распределительные трубы с корпусом, а наружна камера выполнена переменного радиуса, измен ющегос на участках между патрубками по The goal is achieved by the fact that the classifier is equipped with axial-tangential nozzles connecting the distribution pipes with the housing, and the outer chamber is made of a variable radius that changes between the nozzles along the

25 закону спирали Архимеда.На фиг. 1 показан предлагаемый классификатор, общий вид; на фиг. 2 .разрез А-А на фиг. 1; на фиг. 3 аксиально-тангенциальный патрубок, 25 to Archimedes' helix law. FIG. 1 shows the proposed classifier, a general view; in fig. 2. Section AA in FIG. one; in fig. 3 axial-tangential nozzle,

Claims

30 general view. The classifier consists of a cylindrical body 1, a conical bottom 2, a mixing chamber 3 located at the inlet of the gas mixture, a distribution pipe system 4 with an axial-tangential direction by nozzles 5 for feeding material into the outer chamber 6 of variable radius with the sections between the nozzles made according to the law Archimedes spirals Separation chamber 7 communicates with the outer chamber b through a circular system of individually adjustable blades 8. On the inner periphery of these blades there is an annular gap for removal from aratsionnoy coarse fraction chamber. The central nozzle 10 serves to remove particles of the fine fraction. Together with the carrier medium. Classifier works as follows. 5 The classified material, which is suspended in a gaseous medium, through the mixing chamber 3, the distribution pipe system 4 and the axial-tangential nozzles 5, through the gaps of the adjustable blades 8 enters the separation chamber 7. Under the action of the force field, large particles are discarded with to the inner surface of the adjustable. blades 8 and through to: an end slot 9 is retracted into the conical part 2 of the classifier. The fine-grained fraction, with a particle size of 0-200 µm in the form of a dust-air spiral flow, enters the region of the central discharge pipe 10, in which the fine fraction with the air flow is sucked off for subsequent separation of the solid fraction from the carrier air. The use of axial-tangential nozzles and an external chamber of variable radius in the classifier can significantly reduce the resistance of the apparatus and increase air consumption, as well as with a high efficiency of classifying the initial mixture, improve the performance of the classifier. Claims of the invention: a classifier comprising a housing, a loading device made in the form of a mixing chamber, distribution pipes, an outer chamber and a separation chamber with an adjustment, a mine patcher, a pipe for unloading coarse fractions and a central discharge for discharging the small fraction, characterized in that In order to increase the classifier's performance, it is equipped with axial-tangential nozzles connecting the distribution pipes with the housing, and the outer chamber is made of variable rad baleen j. changes in the areas between sections of tubes under the law of Archimedes' spiral. Sources of information taken into account during the examination 1. USSR author's certificate No. 453204, cl. B 07 B 7/083, 1973.

2. USSR author's certificate No. 772612, fkl, V 07 V 7/083, 1979 (prototype).

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