Particle-in-gas filtering

Claim 1

A filter assembly for particle-in-gas filtration comprising: a filtering enclosure, a horizontal partition dividing the enclosures into an inlet chamber and an outlet chamber and having apertures communicating between the inlet chamber and the outlet chamber, an inlet leading into the inlet chamber, an outlet leading from the outlet chamber, filter units each having a frame and outwardly extending flanges along two opposite sides thereof, said filter units being adapted to be located on the partition in a filtering position such that gas passing from the inlet chamber to the outlet chamber passes through the filter units before passing through said apertures, and being adapted to be moved vertically to a second position in which the filter units are displaced from the partition, means for moving the filter units vertically from the filtering position to the second position comprising opposed supporting members located within the enclosure above the partition, said supporting members being movable between a lower position in which the supporting member rests below the flanges of the filter units when the filter units are in the filtering position and an upper position in which the filter units are lifted from the partition and are suspended from the supporting members by the flanges, the filter units being in their second position when the supporting members are in the upper position, means located in said inlet chamber for moving said filter units upwardly to said second position and downwardly to said filtering position, a horizontal second inlet communicating with said inlet chamber and a horizontal second outlet communicating with said outlet chamber means for moving the filter units horizontally along the supporting members when the filter units are in the second position from said horizontal second inlet toward said horizontal second outlet.