DOUBLE-STAGE FILTER Russian patent published in 2008 - IPC B01D46/02 

FIELD: technological processes.

SUBSTANCE: invention is related to dust collecting method and may be used in chemical, textile, food, light and other industries for treatment of dusted gases. Double-stage filter contains mesh drum filter and cloth filter with mechanism for sleeves shaking, casing of filtering section and boxes for inlet of dusted air and outlet of purified air. Temperature sensor is installed in the casing, in bunker for dust collection there is emergency sensor of dust level installed, in outlet box of filtering section thermal automatic sensor-annunciator is installed, the outputs of which are connected to the common microprocessor, and in outlet box of filtering section of dust collector header with nozzles is installed for connection to fire extinguishing system, control unit of which is connected with common microprocessor.

EFFECT: increase of efficiency and reliability of dust collecting process.

3 cl, 2 dwg