SU1271563A1

SU1271563A1 - Mill

Info

Publication number: SU1271563A1
Application number: SU803891281A
Authority: SU
Inventors: Геннадий Григорьевич Михеев; Вадим Евгеньевич Мизонов; Станислав Геннадьевич Ушаков; Владимир Александрович Парилов
Original assignee: Ивановский Ордена "Знак Почета" Энергетический Институт Им.В.И.Ленина
Priority date: 1980-05-05
Filing date: 1980-05-05
Publication date: 1986-11-23

Abstract

Изобретение позвол ет повысить эффективность и экономичность изщни za3 мельчени за счет подачи возврата из сепаратора непосредственно под размольные органы мельни11 1, что исключает взаимопересекающиес потоки идущего вверх мельничного продукта и осыпающегос вниз потока недомолотых частиц и снижает кратность циркул ции материала в мельнице. Сырье подаетс по течке 6 на размольный стол 1, где измельчаетс валками 2, подхватываетс газом, поступающим снизу через короб 5 и сопла 4 и направл етс в сепаратор, откуда мелкие частицы вывод тс через патрубок 13, а крупные по течке 14 отвоi д тс непосредственно на размольньй стол 1. 1 ил. (Л С , Готойни гчючЗукт. 13 ьо сд Oi 00The invention improves the efficiency and cost-effectiveness of grinding za3 grinding by supplying a return from the separator directly under the grinding bodies of the mill11 1, which eliminates the intersecting flows of the upward mill product and the crumbling downstream of ground particles and reduces the circulation of the material in the mill. The raw material is fed through the chute 6 to the grinding table 1, where it is crushed by the rolls 2, picked up by gas coming from the bottom through the box 5 and the nozzles 4 and sent to the separator, from where the fine particles are discharged through the nozzle 13, and on the grinding table 1. 1 Il. (L S, Goteny gchuyuch. 13 sd oi 00

Description

Изобретение относится к устройст вам для измельчения сыпучих, материя лов, а именно к валковым мельницам, и может быть использовано в цементи ной, химической, энергетической других отраслях промышленности.The invention relates to devices for grinding bulk, fishing material, namely to roller mills, and can be used in cement, chemical, and other energy industries.

Цель изобретения - повышение: номичности процесса измельчения счет улучшения условий возврата доизмельченного материала на размольный стол.The purpose of the invention is to increase: nomicity of the grinding process by improving the conditions for the return of regrind material to the grinding table.

На чертеже схематично показана предлагаемая мельница,, продольный разрез.The drawing schematically shows the proposed mill, a longitudinal section.

•Мельница состоит из размольного стола 1 с валками 2, размещенными в размольной камере 3₉ соплового аппарата 4, расположенного по периферии размольного стола 1, короба подачи вентилирующего газа 5, примыкающего снизу к размольной камере 3, течки 6 для подачи сырья, размещенной по вертикальной оси мельницы над размольным столом 1, и подсоединенного сверху к размольной камере сепаратора с наружным корпусом, разделенным на нижнюю 7 и верхнюю 8 части, между которыми образован кольцевой • зазор 9, внутренним корпусом 10,аксиальным лопаточным аппаратом 11, крышкой'12, патрубком 13 отвода готовой пыли и дополнительной течкой 14 возврата, имеющей соответственно зазору 9 кольцевое входное отверстие.• The mill consists of a grinding table 1 with rollers 2 located in the grinding chamber 3 _{9 of the} nozzle apparatus 4 located on the periphery of the grinding table 1, duct for supplying venting gas 5, adjacent to the bottom of the grinding chamber 3, estrus 6 for supplying raw materials placed vertically the axis of the mill above the grinding table 1, and connected from above to the grinding chamber of the separator with an outer casing, divided into lower 7 and upper 8 parts, between which an annular gap 9 is formed, • the inner casing 10, the axial blade apparatus ohm 11, cover'12, pipe 13 for removal of finished dust and additional heat 14 return, respectively having a gap 9 of the annular inlet.

Мельница работает, следующим образом. Сырье подается по течке 6 на размольный стол 1, измельчается валками 2 и подхватывается -потоком вентилирующего газа, подаваемого через короб 5 и сопловой аппарат 4 в размольную камеру 3. Пылегазовый поток попадает в первую ступень сепаратора между нижней частью 7 наружного корпуса и внутренним корпусом 10, где из него выделяются наиболее крупные частицы, которые возвращаются в размольную камеру 3 на домол ся сяThe mill operates as follows. The raw material is fed through estrus 6 to the grinding table 1, crushed by rolls 2 and picked up by the flow of venting gas supplied through the duct 5 and nozzle apparatus 4 to the grinding chamber 3. The dust and gas stream enters the first stage of the separator between the lower part 7 of the outer casing and the inner casing 10 , where the largest particles are released from it, which return to the grinding chamber 3 to dominate

J1J1

Оставшиечастицы вместе с газом закручиваютаксиальным.лопаточным аппаратом и попадают в центробежно-про- ,The remaining particles are twisted together with the gas with an axial vanes and into a centrifugal

SO тивоточную ступень, из которой готовая пыль вместе с газом выводится через патрубок 13, а большая часть крупных частиц осаждается на внутренней стенке верхней части наружного корпуса 8, откуда затем через кольцевой зазор 9 по течкам 14 отводится в размольную камеру 3 непосредственно' на размольный, стол 1. Меньшая часть крупных частиц попадает в зазор между крышкой 12 и внутренним корпусом 10 и отводится на размольный стол;через окна в течке 6 сырья.SO is a countercurrent stage, from which the finished dust together with the gas is discharged through the nozzle 13, and most of the large particles are deposited on the inner wall of the upper part of the outer casing 8, from where it is diverted through the annular gap 9 into the grinding chamber 3 directly to the grinding chamber 3, table 1. A smaller part of large particles falls into the gap between the cover 12 and the inner casing 10 and is discharged to the grinding table, through the raw material heat in the windows 6.

Таким образом, предлагаемая мельница имеет повышенную экономичность измельчения,Thus, the proposed mill has an increased efficiency of grinding,

Claims

The invention relates to a device for grinding loose materials, namely, roller mills, and can be used in cement, chemical, energy, and other industries. The purpose of the invention is to increase the economics of the grinding process: by improving the conditions for returning the undersized material to the grinding table. The drawing schematically shows the proposed metznits ,, longitudinal section. The mill consists of a grinding table 1 with rollers 2 placed in the grinding chamber 3j of a nozzle device 4 located on the periphery of the grinding table 1, a duct gas supply box 5 adjacent to the grinding chamber 3 below, chutes 6 for feeding raw materials located along. the vertical axis of the mill above the grinding table 1, and connected to the grinding chamber of the separator with an outer "1 case divided into 1 SHN 7 and top 8 parts, between which is formed an annular gap 9, an internal case 10, an axial blade unit 11, a cap 12, a branch pipe 13 removal of finished dust and additional heat 14 return, having an appropriate gap, 9 annular inlet Mill works in a dull manner. Cfe is fed by the chute 6 at a time the molar table 1J is crushed by the rolls 2 and picked up by a flow of ventilating gas5 supplied through the duct 5 and the nozzle 4 to the grinding chamber 3, the dust-gas stream enters the first stage of the separator between the lower part 7 of the outer case and the inner case 10 where the largest particles are extracted from it, which are returned to the grinding chamber 3 for the final grinding. The remaining parts of the id) 1 are twisted with the gas with an axial hinge device, 11 and fall into the centrifugal-protivotechnoi stage from which dust is prepared together with the gas is removed through the pipe 13, and most of the large particles are deposited on the inner wall of the upper part of the outer casing 8, from which then through the annular gap 9 along the chutes 14 are led into the grinding chamber 3 directly to the grinding chamber. table 1. A smaller part of the large particles falls into the gap between the lid 12 and the inner casing 10 and is led to the grinding table. Through the windows in the heat 6 of the raw material. Thus, the proposed mill has improved grinding efficiency. Claims of the mill comprising a grinding table, housed a grinding chamber, located on the periphery of the grinding table, a machine adjacent to the grinding chamber and a ventilating gas supply box positioned along the vertical axis of the mill above the grinding table estrus and two-stage separator connected to the top of the grinding chamber, made with coaxial outer and inner housings, placed between with an axial blade apparatus and a nozzle for removing the finished dust, characterized in that, in order to increase the cost-effectiveness of the grinding process by improving the conditions for returning the undersized material to the grinding table, it is provided with an additional leak, which has an annular inlet opening and is attached to the outer cage at the upper part of the axial blade apparatus, with the outer cage of the separator upward from the point of attachment of the additional chute is made with an increased diameter, The heat chute is passed through the wall of the grinding chamber, and its output end is located with a gap above the grinding table.