| abstract |
[PROBLEMS] To solve the problems of conventional drainage pipe joints, increase the swirling force of drainage flowing down in a vertical pipe line, ensure a vent core, and reduce the longitudinal force by swirling blades. Provided is a drainage pipe joint capable of reducing pressure fluctuation in a pipe line. A first swirl vane 14g, a second swirl vane 12c, and a third swirl vane 52 are provided therein, and when these swirl vanes 14g, 12c, 52 are projected in a direction perpendicular to the vertical axis. The waste water received by the first swirl vane 12c without being overlapped is further received by the second swirl vane 12c, and the drain received by the first swirl vane 14g and the second swirl vane 12c is the third swirl vane. Arranged so that 52 could not be received. [Selection] Figure 1 |