| 摘要 |
PURPOSE: A drainage pipe assembly unit for reducing interlayer noise is provided to prevent leakage generated according to damage or connection release of a drainage pipe due to the change of the pressure according to the sudden direction change of the drainage or collision of the pipe caused by the drop of sewage. CONSTITUTION: A drainage pipe assembly unit for reducing interlayer noise comprises a fixing pipe(10), a noise reduction pipe(20), and a drainage induction pipe(30). The noise reduction pipe comprises a vertical pipe unit and a trap pipe unit. The trap pipe unit is extended from the lower part of the vertical pipe and comprises an outlet arranged in a position which is higher than the lower part of the vertical pipe. One end of the drainage induction pipe is inserted into the fixing pipe, and the other end is inserted into the vertical pipe so that the other end is arranged in the position which is lower than the outlet of the trap pipe.
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