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ACCELERATING AGENT ADDITION DEVICE FOR SPRAY CONCRETE, AND BACK FLOW PREVENTION METHOD IN ACCELERATING AGENT ADDITION DEVICE FOR SPRAY CONCRETE
PROBLEM TO BE SOLVED: To provide a technology that prevents back flow of concrete slurry and water in an accelerating agent addition device for spray concrete.SOLUTION: An accelerating agent addition device 1 is a Y-shaped junction pipe, for example. The accelerating agent addition device comprises a concrete slurry force-feed pipe 2, a side pipe 3 communicated with the side face of the concrete slurry force-feed pipe 2, and a non-return valve 4 provided with the side pipe 3. A powder accelerating agent is fed by air pressure via the side pipe 3. The non-return valve 4 includes a plurality of elastic blades disposed at a pipe circumferential direction in a cylindrical part and end portions of the cylindrical part. The non-return valve 4 is in the opened state at the time of air pressure feed, and when stopping the air pressure feed, it becomes the closed state.SELECTED DRAWING: Figure 2
【課題】吹付コンクリート用急結剤添加装置におけるコンクリートスラリーや水の逆流を防止する技術を提供する。【解決手段】急結剤添加装置１は、たとえばＹ字状の合流管である。コンクリートスラリー圧送管２と、コンクリートスラリー圧送管２の側面に連通する側管３と、側管３内に設けられる逆止弁４を備える。粉末急結剤は側管３を介して空気圧送される。逆止弁４は、筒状部と筒状部端部に管周方向に配設された複数の弾性ブレードを有する。逆止弁４は、空気圧送時に開口した状態にあり、空気圧送停止時に閉口した状態になる。【選択図】図２
ACCELERATING AGENT ADDITION DEVICE FOR SPRAY CONCRETE, AND BACK FLOW PREVENTION METHOD IN ACCELERATING AGENT ADDITION DEVICE FOR SPRAY CONCRETE
PROBLEM TO BE SOLVED: To provide a technology that prevents back flow of concrete slurry and water in an accelerating agent addition device for spray concrete.SOLUTION: An accelerating agent addition device 1 is a Y-shaped junction pipe, for example. The accelerating agent addition device comprises a concrete slurry force-feed pipe 2, a side pipe 3 communicated with the side face of the concrete slurry force-feed pipe 2, and a non-return valve 4 provided with the side pipe 3. A powder accelerating agent is fed by air pressure via the side pipe 3. The non-return valve 4 includes a plurality of elastic blades disposed at a pipe circumferential direction in a cylindrical part and end portions of the cylindrical part. The non-return valve 4 is in the opened state at the time of air pressure feed, and when stopping the air pressure feed, it becomes the closed state.SELECTED DRAWING: Figure 2
【課題】吹付コンクリート用急結剤添加装置におけるコンクリートスラリーや水の逆流を防止する技術を提供する。【解決手段】急結剤添加装置１は、たとえばＹ字状の合流管である。コンクリートスラリー圧送管２と、コンクリートスラリー圧送管２の側面に連通する側管３と、側管３内に設けられる逆止弁４を備える。粉末急結剤は側管３を介して空気圧送される。逆止弁４は、筒状部と筒状部端部に管周方向に配設された複数の弾性ブレードを有する。逆止弁４は、空気圧送時に開口した状態にあり、空気圧送停止時に閉口した状態になる。【選択図】図２
ACCELERATING AGENT ADDITION DEVICE FOR SPRAY CONCRETE, AND BACK FLOW PREVENTION METHOD IN ACCELERATING AGENT ADDITION DEVICE FOR SPRAY CONCRETE
吹付コンクリート用急結剤添加装置および吹付コンクリート用急結剤添加装置における逆流防止方法
HANEI YOSHIHISA (author)
2018-04-05
Patent
Electronic Resource
Japanese
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