Filter drum type efficient air supply outlet

The invention discloses a filter drum type efficient air supply outlet. The filter drum type efficient air supply outlet comprises a box body, a cylindrical filter, a flat filter, a diffusion plate, a fixing assembly, a sealing strip, a negative pressure leaking hole, a dispersing plate and a sealing liquid tank; the cylindrical filter and the flat filter are arranged in the box body, an air inlet and the diffusion plate are arranged below the box body, and an air outlet and the dispersing plate are arranged above the box body; a flat separating layer in which the cylindrical filter is sealed and assembled is arranged in the box body; the flat filter is arranged on the top surface of the cylindrical filter and is sealed through the sealing strip and the sealing liquid tank and clamped and fixed through the fixing assembly; both a PAO injection port and a PAO testing port are formed in a low pressure air outlet area; and the negative pressure leaking hole is formed in the sidewall of a buffering area. The filter drum type efficient air supply outlet has the advantages that the air is out from the cylindrical surface and the flat surface in a stereo way, so that the filtering area and the effective service life are doubly increased and prolonged, the maintenance period is increased, the air filtering effect is improved, and the equipment instrument and later maintenance of a purifying space are reduced.