SLEEVE FILTER TO EFFECT THREE-STAGE AIR CLEARING OF MECHANICAL IMPURITIES

FIELD: engines and pumps. ^ SUBSTANCE: invention is designed to clear aspiration air withdrawn from wood-working tools containing a mix of wood dust, saw dust and shavings or only 100%-wood grinding fire-and-explosion-dangerous dust, and to feed purified air back into production premises. The said filter comprises filtration modules incorporating dust catcher chambers, dust collectors, filtration sleeves, hoppers and air cell filter panel fitted horizontally in the gap between the dust catcher chambers, above the purified air valve holes, to form an upper chamber communicating with the extra fan inlet branch pipe and an lower chamber communicating with the purified air outlet manifold. The said manifold features two vertical walls with rectangular openings accommodating comb screens made up of flat and corrugated bands. ^ EFFECT: increased power savings, expanded performances. ^ 13 dwg