| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a drainage joint which is simple in structure, can generate swirling flow in drainage, and ensures ventilation in a drainage riser even if a large amount of drainage flows therethrough at a time. SOLUTION: According to the drainage joint, a joint main body 2 is molded like an almost cylindrical shape which the diameter is reduced as it goes downward. Then, the joint main body 2 has an outlet 4 in a bottom thereof, and inlets 3 in side portions thereof. Then, the center of each inlet 3 is arranged so as to be decentered from the center of the joint main body 2, and a vent pipe 6 extending from an upper end to the outlet 4 of the joint main body 2 is arranged in the joint main body 2 along the center of the same.</p> |
