A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
To provide a float type check valve which suppresses occurrence of malfunction by reducing deposition of dust in a gap between a float and a bottom plate (regulation member).SOLUTION: A float type check valve is disposed in a drain system which performs drain from the upstream to the downstream, and comprises an annular valve seat, a float, a guide member and a specification member. The annular valve seat is opened in a vertical direction and communicates the upstream side and the downstream side of the drain system. The float is positioned in a vertically movable manner at the downstream side at a lower side of the annular valve seat, closes the annular valve seat by floating with a level rise of drain water to close the opening and opens the annular valve seat by falling with a level fall of drain water to open the opening. The guide member guides the vertical movement of the float. The specification member specifies a lower limit position of the movements of the float. The specification member is a tabular member in which the float is landed at a top face side by falling, and a longitudinal cross section is in an upward projected shape.SELECTED DRAWING: Figure 1
【課題】フロートと底板（規定部材）との隙間でのゴミの堆積を低減し、作動不良の発生を抑制するフロート式逆流防止弁を提供する。【解決手段】フロート式逆流防止弁は、上流から下流に排水を行う排水系統中に配設され、環状弁座、フロート、ガイド部材及び規定部材を備える。環状弁座は、上下方向に開口し、排水系統の上流側と下流側とを連通する。フロートは、環状弁座下方の下流側において上下方向に移動可能に位置し、排水の水位上昇に伴って浮上して開口を閉じることで環状弁座を閉栓し、排水の水位低下に伴って降下して開口を開放することで環状弁座を開栓する。ガイド部材は、フロートの上下方向の移動をガイドする。規定部材は、フロートの移動の下限位置を規定する。また、規定部材は、フロートが降下によって上面側に着地する板状部材であり、縦断面が上に凸の形状である。【選択図】図１
To provide a float type check valve which suppresses occurrence of malfunction by reducing deposition of dust in a gap between a float and a bottom plate (regulation member).SOLUTION: A float type check valve is disposed in a drain system which performs drain from the upstream to the downstream, and comprises an annular valve seat, a float, a guide member and a specification member. The annular valve seat is opened in a vertical direction and communicates the upstream side and the downstream side of the drain system. The float is positioned in a vertically movable manner at the downstream side at a lower side of the annular valve seat, closes the annular valve seat by floating with a level rise of drain water to close the opening and opens the annular valve seat by falling with a level fall of drain water to open the opening. The guide member guides the vertical movement of the float. The specification member specifies a lower limit position of the movements of the float. The specification member is a tabular member in which the float is landed at a top face side by falling, and a longitudinal cross section is in an upward projected shape.SELECTED DRAWING: Figure 1
【課題】フロートと底板（規定部材）との隙間でのゴミの堆積を低減し、作動不良の発生を抑制するフロート式逆流防止弁を提供する。【解決手段】フロート式逆流防止弁は、上流から下流に排水を行う排水系統中に配設され、環状弁座、フロート、ガイド部材及び規定部材を備える。環状弁座は、上下方向に開口し、排水系統の上流側と下流側とを連通する。フロートは、環状弁座下方の下流側において上下方向に移動可能に位置し、排水の水位上昇に伴って浮上して開口を閉じることで環状弁座を閉栓し、排水の水位低下に伴って降下して開口を開放することで環状弁座を開栓する。ガイド部材は、フロートの上下方向の移動をガイドする。規定部材は、フロートの移動の下限位置を規定する。また、規定部材は、フロートが降下によって上面側に着地する板状部材であり、縦断面が上に凸の形状である。【選択図】図１
FLOAT TYPE CHECK VALVE
フロート式逆流防止弁
HIROTANI MASAHISA (author)
2021-08-10
Patent
Electronic Resource
Japanese