| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an improved collecting-pipe joint, which is supported stably and in which a support member can be arranged without generating buckling. SOLUTION: The two-stage pipe joint 1 is formed while having an upper stand-pipe joint port 10, a joint section 11, a drum body section 20 and a lower stand-pipe joint port 22, and constituted while an upper-stage horizontal branch- pipe joint section 13 with a horizontal branch-pipe joint port 12 and a lower- stage horizontal branch-pipe joint section 15 with a horizontal branch-pipe joint port 14 are installed in the joint section 11. An annular collar section 17 formed in a diameter larger than a cylindrical trunk section 11a is formed between the upper-stage horizontal branch-pipe joint section 13 and the lower- stage horizontal branch-pipe joint section 15, and a retaining surface 17b retained to a support member is formed on the underside of the annular collar section 17. The two-stage pipe joint 1 is supported by retaining the retaining surface of the support band of the support member to the retaining surface 17b. A tapered pipe section 21 formed in a smaller diameter towards a lower section is shaped on the drum body section 20, and the lower stand-pipe joint port 22 is formed on the tapered pipe section 21.</p> |
