A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PROBLEM TO BE SOLVED: To provide a float type check valve that improve drainage capability of a drain system by suppressing a movement of air to an upstream side from disturbing a flow of drain water while maintaining a backflow preventing function.SOLUTION: A float type check valve arranged in a drain system drawing water from upstream to downstream includes a first valve unit, an opening part, and a second valve unit. The first valve unit has: a first annular valve seat which is open in a vertical direction and links an upstream side and a downstream side to each other; a first float which is fitted to the opening by moving up as the water level of drain water rises so as to close the first annular valve seat, and leaves the opening by moving down as the water level of the drain water falls to open the first annular valve seat; a first guide member which guides a vertical movement of the first float; and a first definition part which defines a lower-limit position of the movement of the first float. The opening is located above the first annular valve seat to link the upstream side and the downstream side to each other. The second valve unit has an opening/closing mechanism which closes the opening part in a case of a backflow.
【課題】逆流防止機能を維持しつつ上流側への空気の移動が排水の流れを妨げること抑制して排水系統の排水能力を向上させるフロート式逆流防止弁を提供する。【解決手段】上流から下流に排水を行う排水系統中に配設されるフロート式逆流防止弁は、第１弁ユニット、開口部及び第２弁ユニットを備える。第１弁ユニットは、上下方向に開口して上流側と下流側とを連通する第１環状弁座、排水の水位上昇に伴って浮上して開口に嵌合することで第１環状弁座を閉栓し、排水の水位低下に伴って降下して開口を解放することで第１環状弁座を開栓する第１フロート、第１フロートの上下方向の移動をガイドする第１ガイド部材、第１フロートの移動の下限位置を規定する第１規定部材を有する。開口部は、第１環状弁座よりも上方に位置して上流側と下流側とを連通する。第２弁ユニットは、逆流時に開口部を閉栓する開閉機構を有する。【選択図】図１
PROBLEM TO BE SOLVED: To provide a float type check valve that improve drainage capability of a drain system by suppressing a movement of air to an upstream side from disturbing a flow of drain water while maintaining a backflow preventing function.SOLUTION: A float type check valve arranged in a drain system drawing water from upstream to downstream includes a first valve unit, an opening part, and a second valve unit. The first valve unit has: a first annular valve seat which is open in a vertical direction and links an upstream side and a downstream side to each other; a first float which is fitted to the opening by moving up as the water level of drain water rises so as to close the first annular valve seat, and leaves the opening by moving down as the water level of the drain water falls to open the first annular valve seat; a first guide member which guides a vertical movement of the first float; and a first definition part which defines a lower-limit position of the movement of the first float. The opening is located above the first annular valve seat to link the upstream side and the downstream side to each other. The second valve unit has an opening/closing mechanism which closes the opening part in a case of a backflow.
【課題】逆流防止機能を維持しつつ上流側への空気の移動が排水の流れを妨げること抑制して排水系統の排水能力を向上させるフロート式逆流防止弁を提供する。【解決手段】上流から下流に排水を行う排水系統中に配設されるフロート式逆流防止弁は、第１弁ユニット、開口部及び第２弁ユニットを備える。第１弁ユニットは、上下方向に開口して上流側と下流側とを連通する第１環状弁座、排水の水位上昇に伴って浮上して開口に嵌合することで第１環状弁座を閉栓し、排水の水位低下に伴って降下して開口を解放することで第１環状弁座を開栓する第１フロート、第１フロートの上下方向の移動をガイドする第１ガイド部材、第１フロートの移動の下限位置を規定する第１規定部材を有する。開口部は、第１環状弁座よりも上方に位置して上流側と下流側とを連通する。第２弁ユニットは、逆流時に開口部を閉栓する開閉機構を有する。【選択図】図１
FLOAT TYPE CHECK VALVE
フロート式逆流防止弁
HIROTANI MASAHISA (author)
2015-12-07
Patent
Electronic Resource
Japanese