FILTER FOR CLEANING GAS Russian patent published in 1997 - IPC

FIELD: cleaning gases of dust in manufacture of building materials. SUBSTANCE: filter includes housing with contaminated and cleaned gas chambers, hopper, upper and lower shutters with grainy filtering material contained between them; shutters are mounted between chambers. Contaminated gas chamber is provided with horizontal grid having projections and plate made from flexible material which are secured to projections and to lower shutter. EFFECT: enhanced efficiency. 2 cl, 3 dwg