METHOD OF CLEANING TWO FILTERS OF SUCTION APPARATUS FOR CLEANING PURPOSES AND SUCTION APPARATUS TO THIS END Russian patent published in 2013 - IPC B01D29/62 B01D35/12 B01D46/00 

FIELD: process engineering.

SUBSTANCE: set of inventions relates to cleaning of suction apparatus filters. Method of cleaning filters of suction apparatus incorporating mud trap with suction inlet comprises supplying rarefaction to mud trap via the first and second filters and the first or second suction lines adjoining said filters. Note here that the first and second shutoff valves stop the first or second ambient air inlet of said first or second suction line. Said shutoff valves are opened to feed ambient air to said filters from clean space side for cleaning of said filters. Rarefaction is supplied to mud trap via the first suction line and first filter by the first suction assy of first suction apparatus and via second suction line and second filter by second suction device of second suction apparatus. At least in cleaning said first and second filters the first and second suction lines are tightly isolated relative to each other on clean space side. Suction apparatus has first suction inlet. First suction outlet is equipped with first filter while second suction outlet is provided with second filter whereto adjoins first or second suction line to allow rarefaction to be supplied to aforesaid mud trap. Suction apparatus has first and second ambient air inlets to feed ambient air via first or second suction line to first or second filters, second inlet being equipped with first or second shutoff valve. Suction apparatus incorporates first and second suction assemblies to supply rarefaction to mud trap via first and second section lines and first and second filters.

EFFECT: higher efficiency of cleaning.

18 cl, 5 dwg