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 capable of switching between a function for preventing only a reverse flow and a function for preventing the reverse flow while shutting off movement of gas.SOLUTION: A float type check valve 1 includes: an annular valve seat 6; a foat 9; a guide member 7; energizing means 10; and a switch mechanism. The annular valve seat is opened in a vertical direction, and communicates an upstream side and a downstream side of a drain system. The float closes the annular valve seat by closing an opening thereof, and opens the annular valve seat by opening the opening thereof. The guide member guides the vertical movement of the float. The energizing means supports the float lowered to a lower limit position and energizes the float upward. The switch mechanism switches a relative position of the annular valve seat and the energizing means between a first relative position in which the float is held by the annular valve seat and the energizing means so as to close the annular valve seat and a second relative position in which the float is floated and lowered in the vertical direction in accordance with raising and lowering of a water level of drain so as to open and close the annular valve seat.SELECTED DRAWING: Figure 1
【課題】逆流のみを防止する機能、気体の移動を遮断しつつ逆流を防止する機能のいずれかに切り換え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１は、環状弁座６、フロート９、ガイド部材７、付勢手段１０及び切換機構を備える。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、開口を閉じることで環状弁座を閉栓し、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。付勢手段は、下限位置に降下した状態のフロートを支持し且つ上方に付勢する。切換機構は、環状弁座及び付勢手段の相対位置を、フロートが環状弁座及び付勢手段に挟持されて環状弁座を閉栓している状態となる第１の相対位置、及び、フロートが排水の水位の上昇及び下降に伴って上下方向に浮上及び降下して環状弁座を開閉する状態となる第２の相対位置に切り換える。【選択図】図１
PROBLEM TO BE SOLVED: To provide a float type check valve capable of switching between a function for preventing only a reverse flow and a function for preventing the reverse flow while shutting off movement of gas.SOLUTION: A float type check valve 1 includes: an annular valve seat 6; a foat 9; a guide member 7; energizing means 10; and a switch mechanism. The annular valve seat is opened in a vertical direction, and communicates an upstream side and a downstream side of a drain system. The float closes the annular valve seat by closing an opening thereof, and opens the annular valve seat by opening the opening thereof. The guide member guides the vertical movement of the float. The energizing means supports the float lowered to a lower limit position and energizes the float upward. The switch mechanism switches a relative position of the annular valve seat and the energizing means between a first relative position in which the float is held by the annular valve seat and the energizing means so as to close the annular valve seat and a second relative position in which the float is floated and lowered in the vertical direction in accordance with raising and lowering of a water level of drain so as to open and close the annular valve seat.SELECTED DRAWING: Figure 1
【課題】逆流のみを防止する機能、気体の移動を遮断しつつ逆流を防止する機能のいずれかに切り換え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１は、環状弁座６、フロート９、ガイド部材７、付勢手段１０及び切換機構を備える。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、開口を閉じることで環状弁座を閉栓し、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。付勢手段は、下限位置に降下した状態のフロートを支持し且つ上方に付勢する。切換機構は、環状弁座及び付勢手段の相対位置を、フロートが環状弁座及び付勢手段に挟持されて環状弁座を閉栓している状態となる第１の相対位置、及び、フロートが排水の水位の上昇及び下降に伴って上下方向に浮上及び降下して環状弁座を開閉する状態となる第２の相対位置に切り換える。【選択図】図１
FLOAT TYPE CHECK VALVE
フロート式逆流防止弁
HIROTANI MASAHISA (author)
2016-04-25
Patent
Electronic Resource
Japanese