FLAP GATE

PROBLEM TO BE SOLVED: To provide a flap gate capable of completely closing a door body when a water level rises, and capable of smoothly draining water by reducing a hindrance of a water flow to the external water side from the internal water side in draining, even when requiring large initial openi...

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Bibliographic Details
Main Author SASAYAMA KOJI
Format Patent
LanguageEnglish
Japanese
Published 22.06.2015
Subjects
FIXED CONSTRUCTIONS
FOUNDATIONS
HYDRAULIC ENGINEERING
SOIL SHIFTING
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Summary:PROBLEM TO BE SOLVED: To provide a flap gate capable of completely closing a door body when a water level rises, and capable of smoothly draining water by reducing a hindrance of a water flow to the external water side from the internal water side in draining, even when requiring large initial opening such as a water passage having no laying step difference.SOLUTION: A flap gate 1A is provided for opening-closing a door body 4 to an opening part 91 in a structure 9 such as a sluice, and a moving float 6A is provided on a back face of the door body 4 for moving in the separating direction from the door body 4 in response to a rise in the water level and moving in the approaching direction to the door body by the water flow in the draining. 【課題】敷き段差のない水路等のように、大きな初期開度が必要な場合であっても、水位の上昇時には、扉体を完全に閉じることができるとともに、排水時には、内水側から外水側への水流の阻害を低減し、スムーズに排水することができるフラップゲートを提供する。【解決手段】樋門等の構造物９における開口部９１に対して扉体４を開閉させるフラップゲート１Ａであって、前記扉体４の背面には、水位の上昇に合わせて前記扉体４から離れる方向へ移動するとともに、排水時の水流によって扉体へ近づく方向へ移動する移動フロート６Ａが設けられている。【選択図】 図３
Bibliography:Application Number: JP20130258368