BAG FILTER FOR CLEANING DUST-CONTAINING GAS AND INJECTION NOZZLE FOR SAID BAG FILTER Russian patent published in 2016 - IPC B01D46/02 

FIELD: technological processes.

SUBSTANCE: group of inventions relates to bag filter for cleaning dust-containing gases and to an injection nozzle for filter sleeves. Bag filter for cleaning dust-laden gases, comprises a housing, which is divided into a filtered-gas side and unfiltered-gas side by a bag bottom having openings, and device for pulse supply of compressed air into open ends of filter sleeves for cleaning of filter sleeves. In housing in holes of bag bottom there are multiple filtering sleeves with a flat section and, respectively, with closed end and open end. Dust-containing gases are fed into filter sleeves from outside and cleaned gases are discharged via open ends. In each of filter sleeves there are support frames. Each support frame on superodinate open end of corresponding filter sleeve end is connected to injection nozzle for direction and acceleration of cleaning of compressed air pulses, injection nozzle, at least partially enters hole of bag bottom. On outer side of injection nozzle at height of bag bottom sealing elements are arranged to form a given gap for specified compression filter sleeves between sealing elements and lateral surface of hole in bag bottom and for spontaneous seal filter sleeves relative to opening of bag bottom. Filter sleeve on lengthwise side is configured for pressing by means of sealing elements on outer side of injection nozzle to side surface of hole in bag bottom. Injection nozzle of filter sleeve of bag filter, at least partially enters hole of bag bottom. Outer side in working position at height of bag bottom sealing elements are arranged to form a given gap for specified compression filter sleeves between sealing elements and lateral surface of hole in bag bottom and for spontaneous seal filtration sleeves relative to opening of bag bottom.

EFFECT: higher efficiency of cleaning dust-containing gases.

18 cl, 6 dwg