| 摘要 |
<p>PURPOSE:To facilitate the positioning of contact materials and to greatly improve an operation for assembling said materials by fitting frame material which have flexibility and can be inserted freely to the positioning parts of a contact aeration tank to the end faces of a contact material body to be loaded into the contact aeration tank. CONSTITUTION:The frame materials 16a-16c fitted to the end face of the contact material body 15 are inserted into grooves 17 (a kind of positioning parts) provided on the inside wall 4a of the contact aeration tank 4. The frame materials 16a-16c are formed of a material such as rubber which can be freely elastically deformed. The outside end thereof is formed to a tapered guide surface. The frame materials 16a-16c are, therefore, elastically deformed and the guide surfaces thereof are inserted and press-fitted into the grooves 17, by which the contact materials 12 are positioned and fixed to the contact aeration tank 4.</p> |
