| 摘要 |
The present invention relates to a connection structure of vertical exhaust pipes of a dry-type air duct system capable of an easy installation and a fireproof sealing. More specifically, vertical exhaust pipes for penetrating and funneling a sleeve embedded in a floor slab concrete and a connection sealing member for connecting the vertical exhaust pipes at the same time completely sealing a fireproof block by being tightly inserted to the sleeve and vertical exhaust pipes are provided. On a predetermined position of the outer circumferential surface of the connection sealing member, a ring-shaped groove portion is formed, and a thermal ring and a fireproof ring are coupled to the groove portion to further enhance the sealing efficiency. The groove portion has a gap for vertically pulling the rings in and out from the groove portion, thus being capable of buffering errors occurred by any on-site situation. |
