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 cutoff valve capable of switching a valve body in a closed position with small electric power.SOLUTION: A cutoff valve includes: a drive mechanism 21 interlocked and connected to an openable/closable valve body; an actuator for driving the drive mechanism 21 so as to operate the valve body in an opening position to a closed position in emergency; a rotation operation part 24 for operating the drive mechanism 21 so as to switch the valve body operated to the closed position to the opening position; and a casing for storing the drive mechanism 21 and the actuator. The rotation operation part 24 is configured by: a rotary shaft 24A supported in the casing rotatably; and a protrusion part for protruding to the outside of the casing from the rotary shaft 24A. Between a drive rotary shaft 37 and the rotary shaft 24A, a one-way clutch 40 is provided which transmits a manual rotation force of the rotary shaft 24A to the drive rotary shaft 37 only when the valve body in the closed position is switched to the opening position.SELECTED DRAWING: Figure 7
【課題】小さな電力で閉塞位置に弁体を切り替えることができる遮断弁を提供する。【解決手段】開閉自在な弁体に連動連結される駆動機構２１と、開放位置の弁体を緊急時に閉塞位置へ操作すべく駆動機構２１を駆動するためのアクチュエータと、閉塞位置へ操作された弁体を開放位置へ切り替えるべく駆動機構２１を操作するための回転操作部２４と、駆動機構２１とアクチュエータとを収容するケーシングとを備え、回転操作部２４が、ケーシング内に回転自在に支持される回転軸２４Ａと、回転軸２４Ａからケーシング外へ突出する突出部とから構成され、駆動回転軸３７と回転軸２４Ａとの間に、閉塞位置の弁体を開放位置へ切り替えるときにのみ、回転軸２４Ａの手動回転力を駆動回転軸３７に伝達するワンウェイクラッチ４０を設けた。【選択図】図７
PROBLEM TO BE SOLVED: To provide a cutoff valve capable of switching a valve body in a closed position with small electric power.SOLUTION: A cutoff valve includes: a drive mechanism 21 interlocked and connected to an openable/closable valve body; an actuator for driving the drive mechanism 21 so as to operate the valve body in an opening position to a closed position in emergency; a rotation operation part 24 for operating the drive mechanism 21 so as to switch the valve body operated to the closed position to the opening position; and a casing for storing the drive mechanism 21 and the actuator. The rotation operation part 24 is configured by: a rotary shaft 24A supported in the casing rotatably; and a protrusion part for protruding to the outside of the casing from the rotary shaft 24A. Between a drive rotary shaft 37 and the rotary shaft 24A, a one-way clutch 40 is provided which transmits a manual rotation force of the rotary shaft 24A to the drive rotary shaft 37 only when the valve body in the closed position is switched to the opening position.SELECTED DRAWING: Figure 7
【課題】小さな電力で閉塞位置に弁体を切り替えることができる遮断弁を提供する。【解決手段】開閉自在な弁体に連動連結される駆動機構２１と、開放位置の弁体を緊急時に閉塞位置へ操作すべく駆動機構２１を駆動するためのアクチュエータと、閉塞位置へ操作された弁体を開放位置へ切り替えるべく駆動機構２１を操作するための回転操作部２４と、駆動機構２１とアクチュエータとを収容するケーシングとを備え、回転操作部２４が、ケーシング内に回転自在に支持される回転軸２４Ａと、回転軸２４Ａからケーシング外へ突出する突出部とから構成され、駆動回転軸３７と回転軸２４Ａとの間に、閉塞位置の弁体を開放位置へ切り替えるときにのみ、回転軸２４Ａの手動回転力を駆動回転軸３７に伝達するワンウェイクラッチ４０を設けた。【選択図】図７
CUTOFF VALVE
遮断弁
TERADA TAKASHI (author)
2016-05-09
Patent
Electronic Resource
Japanese