RISE AND FALL OVERFLOW WEIR

摘要

PROBLEM TO BE SOLVED: To provide a rise and fall weir having a screen preventing inflow of garbage by enabling modification of an overflow weir top being weir-high at any time without needing work for modifying the weir height of an overflow weir. SOLUTION: The overflow weir provided in a separate sewer system or combined sewer system rain water discharge chamber is provided with a weir member 5 integrally forming a garbage prevention means 6 preventing inflow of underwater or water borne garbage, and a rise and fall means 7 for raising and lowering the weir member 5. An amount of rain water discharge can be adjusted by raising and lowering the weir member 5.