RU2276618C1 - Pulse-regenerating filter - Google Patents

Abstract

FIELD: separation.

SUBSTANCE: filter comprises housing with grate that separates the housing into the chambers for dusted gas and cleaned gas, filtering hoses, frames with ejecting nozzles, regeneration device, and thin plates mounted inside the ejecting nozzles perpendicular to the flow of compressed air.

EFFECT: prolonged service life.

3 dwg

Description

The invention relates to techniques for cleaning dusty gases and can be used in the chemical, food and metallurgical industries.

A known filter with pulsed regeneration, comprising a housing with a grill separating it into dusty and purified gas chambers, filter bags, frames with ejecting nozzles and a regenerating device [Uzhov V.N., Myagkov B.I. Purification of industrial gases by filters. M.: Chemistry, 1970, p.198].

The disadvantage of the prototype is the incomplete use of energy flow of compressed air and, as a consequence, the lack of regeneration efficiency.

An object of the invention is to increase the efficiency of the regeneration of the filter with pulse regeneration.

The problem is solved in that in the proposed filter with pulse regeneration, comprising a housing with a grill separating it into dusty and purified gas chambers, filter bags, frames with ejecting nozzles and a regenerating device, it is new that inside the ejection nozzles perpendicular to the flow of compressed air thin plates installed.

Figure 1 presents a General view of a filter with pulse regeneration, section; figure 2 - ejection nozzle (General view), figure 3 - ejection nozzle (top view).

The filter contains a housing 1, a grill 2, dividing the housing into chambers of dusty and purified gases, filter bags 3 closed from the bottom, frames 4, ejection nozzles 5 with thin plates 16, a regenerating device including purge pipes 7 with nozzles 6, electromagnetic valves 8 and receiver 9; nozzles 10 for the entry of dusty and 11 for the exit of purified gases, dust hopper 12, shutter 13, hatches 14 and 15.

The filter works as follows.

Dusty gases under the influence of the vacuum created by the fan enter through the pipe 10 into the chamber of dusty gases. Gases, passing through the filter material, enter the chamber of purified gases and then through the pipe 11 are discharged into the atmosphere. As dust is deposited on the outer surface of the sleeves, the filter resistance increases, so after a certain time the dust layer is automatically removed - the sleeves are regenerated. During regeneration, the solenoid valve 8 is activated and opens a pulse of compressed air from the receiver 9 into the purge pipe 7 and then through the nozzles 6 and coaxially arranged ejection nozzles 5, in which the thin plates 16 are installed, into the filter bags. Due to the separation of the flow due to the non-streamlining of the plates, the boundary layer breaks off the surface, creating turbulence. These vortices are accompanied by an alternation of pressure drops, which create sound waves with a frequency depending on the magnitude of the vortex. The regeneration of the filter is carried out by exposing the contaminated surfaces to the pressure energy of the compressed and ejected gases, deformation of the bags and the energy of high-frequency elastic mechanical vibrations. Sequential pulses of compressed air are supplied to subsequent purge pipes. Collected dust is poured into the hopper 12 and is removed through the shutter 13. Installation and maintenance of the sleeves is carried out through the hatches 14 and 15.

The technical result is to increase the efficiency of the regeneration of the filter with pulse regeneration.

The proposed filter with pulse regeneration provides:

- increase the service life of the filter bags due to a more complete removal of the dust layer from the surface of the bag during the regeneration process;

- improving the efficiency of the regeneration process due to the impact on the contaminated surface of the pressure energy of compressed and ejected gases, deformation of the arms and the energy of high-frequency elastic mechanical vibrations;

- ease of manufacture and reliability.

Claims (1)

A pulse regeneration filter comprising a housing with a grill separating it into dusty and purified gas chambers, filter bags, frames with ejecting nozzles and a regenerating device, characterized in that thin plates are installed inside the ejecting nozzles perpendicular to the flow of compressed air.

Images