| 摘要 |
PURPOSE:To cause uniform ejection of fine bubbles by forming a pressure reducing nozzle by boring holes on the periphery of a cylinder having a closed tip end, and winding nets superposed on each other on the peripheral surface of the cylinder. CONSTITUTION:A pressure reducing nozzle 3 is formed by boring holes 2 uniformly on the periphery of a cylinder 1 having a closed tip end. Nets 6 prepd. by superposing several numbers of sheet of wire net, nylon, etc., are wound around the peripheral surface of the nozzle 3 where the holes 2 are bored. Further, the net is fixed securely by a net cover 7 having windows 8 opened on the peripheral surface of the cylinder 1 having a closed end, thus deformation and breakage of the net 6 is prevented. When the pressure reducing nozzle 3 is attached to the bottom of a water tank, fine bubbles are dispersed to the whole part of the water tank because fine bubbles are ejected from the whole peripheral surface of the cylindrical pressure reducing nozzle 3. Further, fine bubbles are generated continuously and stably since holes 2 are bored on the periphery of the cylinder 1. |
