Annular uniform cross-section flow equalizing apparatus for cylinder wall-attached air supply

The invention discloses an annular uniform cross-section flow equalizing apparatus for cylinder wall-attached air supply. The apparatus comprises an air inlet pipe and a housing, and the housing is an annular barrel with the upper end being closed. The housing sleeves a using cylinder, and the inner wall of the inner barrel of the housing is tightly attached to the outer wall of the cylinder. The air inlet pipe is arranged at the upper end of the housing, the central axis of the air inlet pipe is perpendicular to and intersects with the central axis of the housing, and the air inlet pipe is communicated with the interior of the housing. 2-6 annular separator plates are horizontally arranged in the housing along the axial direction of the housing. The annular separator plates are alternatively arranged on the inner wall of the outer barrel and the outer wall of the inner barrel of the housing from up to down, so that a channel whose cross section becomes larger and smaller alternatively is formed in the housing along the axial direction of the housing. According to the invention, the air-out uniform effect of an annular slot air outlet is improved, the air is blown vertically and downwardly, and the blown air is less mixed with the ambient air, so that the effectiveness of the cylinder wall-attached air supply is improved. The flow equalizing apparatus is applicable to large-space buildings, and is not limited by applications.