| 摘要 |
PURPOSE: An automatic rainwater-inflow cutoff for a drainpipe is provided to reduce a breakdown by simplifying a structure and to decrease production costs. CONSTITUTION: The automatic rainwater-inflow cutoff for a drainpipe comprises: a body(10) provided with a coupling flange part(11) and an inlet inclined downward to simplify the coupling with a lower exhaust way(23) easily; an interception plate(12) hinged to the front of the inlet to intercept the inlet formed on the front of the body(10); and a buoyancy occurring buoy(13) on the lower part of the interception plate(12).
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