SU430871A1 - SLEEVE FILTER FOR GAS CLEANING - Google Patents

Description

one

The invention relates to the purification of gases from aerosols and can be used in chemical, chemical and cement engineering, and can also be used in enterprises of building materials.

A bag filter is known for cleaning gases, comprising a housing with filter sleeves MMI, divided by a horizontal partition into chambers of purified and dusty gases and regeneration, a ruler, made in the form of a purging collector with a pipe and diffusers.

The known filter does not provide a uniform and sharp increase in pressure in the initial ler-iodine. In addition, the regeneration of the sleeve is carried out through fixed diffusers, which significantly complicates the entire design of the filter (pa.

The purpose of the invention is to automate the process of regenerating the filter and reducing the flow rate of production air.

To do this, in the proposed filter, annular grooves are made in the lower part of the tube, in KOTOipbix spring-loaded diffusers are installed along the axis of the sleeves.

The drawing shows the proposed filter, a general view.

F. filter consists of a housing /, a buvkera 2 with a sluice gate 3, filter sleeves 4, worn on frames 5, horizontal

partitions 6, chamber 7 of dusty gas and chamber 8 of purified gas, inlet 9 and outlet 10 nozzles, purge manifold 11 with throttle valve 12 connected to pipe 13. In the lower part of the pipe there are annular grooves 14 in which springs are mounted along the axis of the sleeves 15 differential; fuzors 16.

The filter works as follows. The dusty gas under the action of the pressure difference at the inlet and at the outlet of the apparatus, created by a fan or other device, flows through the inlet 9 and lhhadit inside the filtering sleeves 4. The gas, cleaned of solid impurities, enters the chamber 8 of the purified gas and through the nozzle 10 exits the filter.

As the layer of dust accumulates on the sleeves, the resistance increases, and the filtration rate decreases. At a predetermined value of co-opposition, neither is regeneration of the sleeves automatically produced by reverse blowing. To do this, at the command of the automatic control device, the flap 12 opens. Compressed air from the collector 11 enters the pipe 13, where an overpressure is created, under the action of which the movable diffusers, overcoming the elasticity of the springs Ii5, lower the ends of the pyivaeoB 4. At this time, through the diffusers 16 in sleeves 4

compressed air enters at high speed (a pressure of 10-30 kg / m-). By the action of the perforated pressure, the sleeves are inflated, deform the settled layer of dust, and at the same time are blown away by the reverse flow of air. At the end of the purge, which lasts from 0.5-: to 3 seconds, the throttle valve 12 stops the supply of compressed air to the diffusers 6, the pressure in the pipe drops. The diffusers under the action of the springs 15 are raised to their previous position. In this case, the internal cavity of the sleeves is again in communication with the clean gas chamber.

| The pressure difference in the pipe 13 and the clean gas chamber 8 will resume the filtering process. The dust, which has been removed from the c; sleeves 4, lonad in the hopper 2, is discharged from the sluice gate 3.

A feature of the proposed device is the presence of movable diffusers, which, during regeneration, do not spar on the sleeves, isolating them from the chamber of purified ha. / In G5

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behind. As a result, the compressed purge air can only move through the hoses in the opposite direction. Compressed air energy is used to move the diffusers, which allows the diffusers to be lowered at the same time as the purge air supply.

Subject invention

A bag filter for gas purification, comprising a housing with f.ilT (duct sleeves, divided by a horizontal partition into clean and dusty gas chambers and a regenerating device made in the form of a purge collector with a pipe and diffusers, characterized in In order to automate the process of regeneration of the filter and reduce the flow rate of the purge air, annular grooves are made in the lower part of the pipe, in which the 1P axes of the sleeves are installed to adjust the diffusers.

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