| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an air diffusion pipe capable of preventing sludge from entering the pipe when air diffusion is stopped, preventing an air diffusion opening and the inside of the pipe from being clogged, and reducing a pressure drop during the air diffusion operation. <P>SOLUTION: The air diffusion pipe includes a membrane body 52 which is made of a tubular elastic body and whose inside communicates with an air supply source, and a plurality of air diffusion opening slits 54 formed as nonlinear slits which penetrate the membrane body 52 from the front side to the back side thereof. In the air diffusion opening slit 54, at least a prescribed part is formed as an inclined surface part 55. In the inclined surface part 55, the slit cut surface is inclined with respect to the radial direction of the membrane body 52. In addition, the slit cut surface 56a on the side of a closed area 56 surrounded by the air diffusion opening slit 54 and a line connecting both ends of the air diffusion opening slit 54 is superposed on the outside of the opposing slit cut surface 52a on the side of the remaining membrane body 52. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
