SU1465141A1

SU1465141A1 - Centrifugal classifier

Info

Publication number: SU1465141A1
Application number: SU874206397A
Authority: SU
Inventors: Владимир Васильевич Воробьев; Владимир Владимирович Косак; Василий Иванович Лисица; Владимир Арсеньевич Фогелев; Николай Александрович Лесин
Original assignee: Предприятие П/Я Ю-9789
Priority date: 1987-03-04
Filing date: 1987-03-04
Publication date: 1989-03-15

Abstract

Изобретение относитс к разделению сыпучих материалов в поле действи центробежных сил и м. б. использовано в пром-сти химических, строительных материалов, горнорудной и др. отрасл х народного хоз йства . Цель - повышение эффективности классификации за счет оптимизации аэродинамического режима. Классификатор включает корпус 1 со спиральной камерой классификации (КК) 3, внутри которой имеетс щель дл крупных фракций и шибер. На КК 3 креп тс патрубок исходной аэросмеси и патрубок 8 воздуха с клапаном. За патрубком исходной аэросмеси расположена перфорированна стенка 10, сопр женна с внутренней перфорированной стенкой патрубка 8. Ниже КК 3 в корпусе 1 под центральным патрубком 16 вывода мелких фракций и соос- но с ним установлен ротор 13, а концентрич- но оси КК 3 - направл ющие лопатки (НЛ) 15 и обечайка 14. Исходна аэросмесь поступает в КК 3, куда через патрубок 8, через перфорации стенки подаетс воздух. Под действием центробежной силы крупные частицы двигаютс по стенке КК 3 и через щель вывод тс из КК 3. Крупность отобранных частиц регулируетс шибером. Материал двига сь по стенке, подвергаетс воздействию воздуха и из него выдуваютс тонкие частицы. Мелкие частицы с воздухом проход т через НЛ 15 и поступают в зону между НЛ 15 и ротором 13. 2 3. п. ф-лы, 2 ил. S (ЛThis invention relates to the separation of bulk materials in the field of centrifugal forces, and b. used in the industrial chemical, building materials, mining and other industries of the national household. The goal is to increase the classification efficiency by optimizing the aerodynamic regime. The classifier includes a housing 1 with a spiral classification chamber (CC) 3, within which there is a gap for large fractions and a gate. At KK 3, the nozzle of the initial mixture and the air nozzle 8 with a valve are attached. A perforated wall 10 is located behind the nozzle of the initial aerosol mixture, adjacent to the inner perforated wall of the nozzle 8. Below QC 3 in housing 1 under the central nozzle 16 of the fine fraction output, the rotor 13 is installed in alignment with it, and concentric The blades (NL) 15 and the shell 14. The initial aero mixture enters the spacecraft 3, where air is supplied through the perforations of the wall through the nozzle 8. Under the action of centrifugal force, large particles move along the wall of KK 3 and through the slit are removed from KK 3. The particle size of the selected particles is controlled by a gate. The material moving along the wall is exposed to air and fine particles are blown out of it. Small particles with air pass through the NL 15 and enter the zone between the NL 15 and the rotor 13. 2 3. p. F-ly, 2 ill. S (l

Description

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Claims

Claim

1. A centrifugal classifier, including a housing, inside which there is a spiral classification chamber, a device for outputting large fractions and a central branch pipe for outputting small fractions, a rotor mounted under and coaxially with the central branch pipe, a supply pipe for the initial air mixture, located at the entrance to the spiral chamber, and the air supply pipe, characterized in that, in order to increase the classification efficiency by optimizing the aerodynamic regime, the spiral classification chamber is located above the rotor, the outer wall of the spiral classification chamber, located directly behind the supply pipe of the original air mixture, is perforated and paired with the inner wall of the air supply pipe, also made perforated, and on the inner wall of the device for outputting large fractions there is a regulating gate.

2. Classifier by π. 1, characterized in that guide vanes are mounted concentrically with respect to the vertical axis 4 in the spiral classification chamber.

3. Classifier by π. 1, characterized in that the air supply pipe is equipped with a control valve.