A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
FLOAT TYPE BACKFLOW PREVENTION VALVE
PROBLEM TO BE SOLVED: To prevent a float type backflow prevention valve capable of reducing interruptions of floatation of a float due to discharged water.SOLUTION: A float type backflow prevention valve comprises: a first storage part and a second storage part, which are hollow; a first annular valve seat; a partition member; a second annular valve seat; a first float; and a second float. The first storage part and the second storage part are vertically connected and communicate an upstream side and a downstream side of a drainage system. The first annular valve seat is disposed on a top face of the first storage part and communicates the upstream side of the drainage system and the first storage part. The partition member is a partition between the first storage part and the second storage part and has a communication hole to communicate the first storage part and the second storage part. The second annular valve seat is disposed on a bottom surface of the second storage part and communicates the second storage part and the downstream side of the drainage system. The first float is vertically movably stored in the first storage part and opens and closes the first annular valve seat depending on a descending motion or a floating motion. The second float is vertically movably stored in the second storage part and opens and closes the second annular valve seat depending on the descending motion or floating motion.SELECTED DRAWING: Figure 1
【課題】排水によるフロートの浮上の阻害を低減することができ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、中空の第一収容部及び第二収容部、第一環状弁座、仕切部材、第二環状弁座、第一フロート、第二フロートを備える。第一収容部及び第二収容部は、上下方向に連結され、排水系統の上流側と下流側とを連通する。第一環状弁座は、第一収容部の上面に配置され、排水系統の上流側と第一収容部とを連通する。仕切部材は、第一収容部と第二収容部とを仕切り、第一収容部と第二収容部とを連通する連通孔を有する。第二環状弁座は、第二収容部の底面に配置され、第二収容部と排水系統の下流側とを連通する。第一フロートは、第一収容部に上下方向に移動可能に収容され、降下及び浮上に応じて第一環状弁座を開閉する。第二フロートは、第二収容部に上下方向に移動可能に収容され、浮上及び降下に応じて第二環状弁座を開閉する。【選択図】図１
FLOAT TYPE BACKFLOW PREVENTION VALVE
PROBLEM TO BE SOLVED: To prevent a float type backflow prevention valve capable of reducing interruptions of floatation of a float due to discharged water.SOLUTION: A float type backflow prevention valve comprises: a first storage part and a second storage part, which are hollow; a first annular valve seat; a partition member; a second annular valve seat; a first float; and a second float. The first storage part and the second storage part are vertically connected and communicate an upstream side and a downstream side of a drainage system. The first annular valve seat is disposed on a top face of the first storage part and communicates the upstream side of the drainage system and the first storage part. The partition member is a partition between the first storage part and the second storage part and has a communication hole to communicate the first storage part and the second storage part. The second annular valve seat is disposed on a bottom surface of the second storage part and communicates the second storage part and the downstream side of the drainage system. The first float is vertically movably stored in the first storage part and opens and closes the first annular valve seat depending on a descending motion or a floating motion. The second float is vertically movably stored in the second storage part and opens and closes the second annular valve seat depending on the descending motion or floating motion.SELECTED DRAWING: Figure 1
【課題】排水によるフロートの浮上の阻害を低減することができ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、中空の第一収容部及び第二収容部、第一環状弁座、仕切部材、第二環状弁座、第一フロート、第二フロートを備える。第一収容部及び第二収容部は、上下方向に連結され、排水系統の上流側と下流側とを連通する。第一環状弁座は、第一収容部の上面に配置され、排水系統の上流側と第一収容部とを連通する。仕切部材は、第一収容部と第二収容部とを仕切り、第一収容部と第二収容部とを連通する連通孔を有する。第二環状弁座は、第二収容部の底面に配置され、第二収容部と排水系統の下流側とを連通する。第一フロートは、第一収容部に上下方向に移動可能に収容され、降下及び浮上に応じて第一環状弁座を開閉する。第二フロートは、第二収容部に上下方向に移動可能に収容され、浮上及び降下に応じて第二環状弁座を開閉する。【選択図】図１
FLOAT TYPE BACKFLOW PREVENTION VALVE
フロート式逆流防止弁
HIROTANI MASAHISA (author)
2016-07-11
Patent
Electronic Resource
Japanese
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