Filtering apparatus

Claim 1

A filter assembly comprising, an enclosure having a door at one side thereof and a removable top cover, a baffle divider extending from said top cover parallel to one side of said enclosure and within said enclosure to a point spaced from the bottom of the enclosure remote from said door, an air inlet passage positioned through said cover and communicating with the portion of the casing to one side of said divider baffle, a motor driven blower mounted in the casing near the top thereof and to the other side of said dividing baffle within said enclosure, said blower including an outlet passage positioned in the top cover of the enclosure, and a removable filter section positioned within and across said enclosure to said other side of said divider baffle below said blower and adjacent said door therein, said filter section being formed of a plurality of filter bags closed at one extremity and having a mounting bracket at the other extremity with the width dimensions substantially equal to the width of the enclosure, said bag type filters being mounted in a generally rectangular frame which is channel-like in cross section with the bags being positioned in a side-by-side relationship and with spacer means of a length equal to the length of the mounting bracket of the bags and of uniform width dimension positioned between adjacent bags in the frame, and including slot means positioned in the top of the rectangular frame and on opposite sides thereof to permit insertion and removal of a variable number of filter bags and spacer members, said filter section being operative to filter air flow entering through said inlet passage and to one side of said divider baffle around the end of the same near the base of the enclosure and being exhausted by said blower through the outlet in said top cover.