SU946610A1

SU946610A1 - Filter for cleaning hot gases

Info

Publication number: SU946610A1
Application number: SU802970091A
Authority: SU
Inventors: Сергей Васильевич Герасимов; Владимир Алексеевич Кожемякин; Юрий Иванович Скворцов; Николай Васильевич Зорин; Людмила Алексеевна Агуренкова
Priority date: 1980-08-07
Filing date: 1980-08-07
Publication date: 1982-07-30

Description

Изобретение относится к технике пылеулавливания, в основном к конструкции рукавных фильтров, и может быть использовано в цветной и черной металлургии, промышленности стройматериалов, химической промышленности, в энергетике и других отраслях, где используются рукавные фильтры для очистки газов от пыли.The invention relates to techniques for dust collection, mainly to the design of bag filters, and can be used in non-ferrous and ferrous metallurgy, building materials industry, chemical industry, energy and other industries where bag filters are used to clean dust from gases.

Известен фильтр для очистки го ¹рячих газов, включающий корпус с бункером и расположенным в нем ρνКавным фильтрующим элементом с заглушенной нижней частью и открытой верхней, прикрепленной к корпусу, и устройство для обратной продувки, выполненное в виде сопла, установленного соосно с фильтрующим элементом (11.Known filter for purification of ¹ ating hot gases, comprising a body with a hopper and ρνKavnym filter disposed therein element with anechoic bottom portion and an open top affixed to the housing, and a device for backwashing formed as a nozzle mounted coaxially with the filter element (11 .

Недостатком известного фильтрующего элемента является сложность в конструкции уплотнения и крепления фильтрующего рукава и компенсирующего устройства, что значительно затрудняет сборку и работу фильтра.A disadvantage of the known filter element is the complexity in the design of the seal and fastening of the filter sleeve and the compensating device, which greatly complicates the assembly and operation of the filter.

Цель изобретения - повышение термостойкости и увеличение производительности.The purpose of the invention is to increase heat resistance and increase productivity.

Указанная цель достигается тем, что в фильтре для очистки горячих газов, включающем корпус с бункером и расположенным в нем рукавным фильт, рующим элементом с заглушенной нижней частью и открытой верхней, прикрепленной к корпусу, и устройство для обратной продувки, выполненное в виде сопла, установленного соос? но с фильтрующим элементом, рукав снабжен кольцами, жестко укрепленными на его концах, а бункер снабжен неподвижным кольцом, установленным соосно с фильтрующим элементом’;This goal is achieved by the fact that in the filter for cleaning hot gases, which includes a housing with a hopper and a bag filter located inside it, a steering element with a blanked bottom and an open upper attached to the housing, and a backflush device made in the form of a nozzle installed coax? but with a filter element, the sleeve is equipped with rings rigidly fixed at its ends, and the hopper is equipped with a fixed ring mounted coaxially with the filter element ’;

Предпочтительно выполнять продувочное сопло с винтовым каналом.It is preferable to perform a purge nozzle with a helical channel.

На фиг.1 изображен фильтр, продольный разрез; на фиг.2 - то же, 2Q вид сверху; на фиг.З - разрез А-А на фиг.1.Figure 1 shows a filter, a longitudinal section; figure 2 is the same, 2Q top view; in Fig.Z - section aa in Fig.1.

Фильтр состоит из фильтрующего рукава 1, выполненного из тканой металлической сетки, внутри которого установлен каркас 2 в виде спирали. Верхний конец фильтрующего рукава 1 зажат кольцом 3 и камерой 4 очищенного газа, а нижний - кольцом 5 с заглушкой 6.,Оба конца проварены с торца плотными швами 7 и 8 по всему диаметру. Фланец 9 камеры 4 кре3 пится к корпусу фильтра 10 тремя клиньями 11 через уплотнение из графитового асбеста. Клин 11 встав* лен в прорезь 12 стояка 13, приварен ного к корпусу фильтра 10 и проходящего через отверстие 14 в плати-г ке 15. Заглушка 6 фильтрующего рукава 1 установлена с зазором по центру неподвижно закрепленного на бункере 16 кольца 17. Фильтр имеет патрубок 18 для подачи запыленного газа, патрубок 19 для вывода очищен ного газа и сопло 20 для обратной продувки.The filter consists of a filter sleeve 1 made of a woven metal mesh, inside of which a frame 2 is installed in the form of a spiral. The upper end of the filter sleeve 1 is clamped by a ring 3 and a purified gas chamber 4, and the lower end by a ring 5 with a plug 6., Both ends are welded from the end with tight seams 7 and 8 over the entire diameter. The flange 9 of the chamber 4 is fastened to the filter housing 10 with three wedges 11 through a seal made of graphite asbestos. The wedge 11 is inserted * into the slot 12 of the riser 13, welded to the filter housing 10 and passing through the hole 14 in the plate 15. The plug 6 of the filter sleeve 1 is installed with a gap in the center of the ring 17 fixed to the hopper 16. The filter has a pipe 18 for supplying dusty gas, a nozzle 19 for discharging purified gas and a nozzle 20 for backflushing.

Фильтр работает следующим образом Запыленный горячий газ подводится к наружной поверхности фильтрующего рукава 1 через патрубок 18, где происходит очистка его от пыли. Очищенный газ просасывается в- камеру 4 и через патрубок 19 выводится из фильтра. После забивания фильтра пылью через сопло 2 0 подается им-г пульс сжатого воздуха, в результате чего происходит гидравлический удар о .заглушку 6, под действием которого нижняя часть рукава смещается в сторону и происходит соударение заглушки о неподвижное кольцо 17. Под дей: ствием обстукивания слой пыли разрушается .The filter operates as follows. Dusty hot gas is supplied to the outer surface of the filter sleeve 1 through the pipe 18, where it is cleaned from dust. The purified gas is sucked into the chamber 4 and is discharged from the filter through the pipe 19. After the filter is clogged with dust, a pulse of compressed air is supplied through the nozzle 2 0, as a result of which there is a hydraulic shock about the plug 6, under which the lower part of the sleeve moves to the side and the plug hits the stationary ring 17. Under the action of tapping the dust layer is destroyed.

Конструкция фильтра упрощена за счет уменьшения количества съемных деталей, что упрощает его сборку и разборку, значительно сокращает время замены фильтрующих элементов и повышает удельную производительность фильтра в 1,3-1,5- раза.The design of the filter is simplified by reducing the number of removable parts, which simplifies its assembly and disassembly, significantly reduces the time to replace the filter elements and increases the specific filter performance by 1.3-1.5 times.

Claims

(54) FILTER FOR CLEANING OF HOT GASES The invention relates to a dust collection technique, mainly to the design of bag filters, and can be used in non-ferrous and ferrous metallurgy, building materials industry, chemical industry, in power engineering and other areas where bag filters are used. gas cleaning from dust. A filter for purifying hot gases is known, including a housing with a hopper and a DVLavny filter element with a lower part and an open upper part attached to the housing located in it, and a device for reverse blowing made in the form of a nozzle mounted coaxially with the filtering element tn. A disadvantage of the known filtering element is the complexity in the design of sealing and mounting the filtering sleeve and the compensating device, which significantly complicates the assembly and operation of the filter. The purpose of the invention is to increase thermal resistance and increase productivity. This goal is achieved by the fact that in the filter for purification of hot gases, comprising a housing with a hopper and a tubular filter element located in it with a plugged down part and an open top attached to the housing, and a device for reverse blowing, made in the form of a nozzle but with a filter element, the sleeve is supplied with rings rigidly fixed on its ends, and the bunker is equipped with a fixed ring, mounted down JJM coaxially with the filter element Preferably, a purge nozzle with a screw channel scarlet. Figure 1 shows the filter, a longitudinal section; figure 2 is the same, top view; on fig.Z - section A-L in figure 1. The filter consists of a filtering sleeve 1, made of woven metal mesh, inside which the frame 2 is installed in the form of a spiral. The upper end of the filtering sleeve 1 is clamped by the ring 3 and the chamber 4 of the cleaned gas, and the lower end is the storage chamber 5 with the plug 6. Both ends are welded from the butt with tight seams 7 and 8 along the entire diameter. The flange 9 of the chamber 4 is attached to the filter housing 10 by three wedges 11 through a graphite asbestos seal. The wedge 11 is installed in the slot 12 one hundred ks (13, welded to the filter housing 10 and passing through the opening 14 in the pane 15 of the plug 15. The filter plug of his sleeve 1 is installed with a gap in the center of the ring 17 fixed to the hopper 16 pipe 18 for supplying dusty gas, pipe 19 for evacuating the cleaned gas and nozzle 20 for back purging. The filter works as follows. Dusty hot gas is supplied to the outer surface of filtering sleeve 1 through pipe 18 where it is cleaned of dust. millet Into the chamber 4 and through the pipe 19 is removed from the filter. After the filter is clogged with dust, compressed air is blown through the nozzle 20, as a result of which a hydraulic impact occurs on the plug b, under the action of which the lower part of the sleeve is displaced to the side and the stub impact About the fixed ring 17. Under the action: a layer of dust breaks down. The filter design is simplified by reducing the number of removable parts, which simplifies its assembly and disassembly, significantly reduces the time for replacing the filter elements. ntov and increases the specific filter performance 1,3-1,5- times. Claim 1. FILTER for purifying hot gases, comprising a housing with a hopper and a tubular filter element disposed therein with a plugged lower part and an open upper one attached to the housing, and a device for reverse blowing designed in the form of a nozzle mounted coaxially with the filtering element , characterized in that, with the effect of increasing heat resistance and increasing productivity; the sleeve is equipped with rings rigidly fixed on its ends, and the bunker is equipped with a stationary ring mounted coaxially with the filter element.

2. Filter according to Claim 1, characterized in that the purge nozzle is provided with a helical channel. Sources of information taken into account in the examination 1. US Patent No. 3726066, cl. 55303, 1973.