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NOZZLE WITH CHECK VALVE FOR PILE CONSTRUCTION DEVICE, PILE CONSTRUCTION DEVICE WITH CHECK VALVE, AND PILE CONSTRUCTION METHOD
To provide a nozzle with a check valve for a pile construction device with excellent sealing performance, a pile construction device with a check valve using the same, and a pile construction method.SOLUTION: A nozzle with a check valve for a pile construction device, which is applied to be able to open and close a flow path to a pile construction device having a flow path for supplying a fluid into a pile hole, comprises an annular valve seat directed downstream in the fluid feed direction, a valve body having a seal edge which can be attached to and detached from the valve seat, a valve stem having one end connected to the valve body and extending upstream in the fluid supply direction from the valve body, a support portion provided upstream of the valve seat in the fluid supply direction and slidably supporting the valve stem in the axial direction of the valve stem, a spring seat attached to the other end of the valve stem, and a coil spring disposed between the support portion and the spring seat and biasing the valve body toward the valve seat. When the valve is closed, the valve body makes linear contact with the valve seat.SELECTED DRAWING: Figure 3
【課題】シール性に優れた杭構築装置用の逆止弁付きノズル、それを用いた逆止弁付き杭構築装置、及び、杭構築方法を提供する。【解決手段】杭構築装置用の逆止弁付きノズルは、杭孔内に流体を供給するための流路を有する杭構築装置に対し流路を開閉可能に適用される杭構築装置用の逆止弁付きノズルにおいて、流体の供給方向にて下流側に向けられた環状の弁座と、弁座に対し接離可能なシール縁を有する弁体と、弁体に接続された一端部を有し、弁体から流体の供給方向にて上流側に向けて延在する弁棒と、流体の供給方向にて弁座よりも上流側に設けられ、弁棒を弁棒の軸線方向に摺動自在に支持する支持部と、弁棒の他端側に取り付けられたばね座部と、支持部とばね座部との間に配置され、弁体を弁座に向けて付勢するコイルばねと、を備え、閉弁時に前記弁体は前記弁座に対して線接触する。【選択図】 図３
NOZZLE WITH CHECK VALVE FOR PILE CONSTRUCTION DEVICE, PILE CONSTRUCTION DEVICE WITH CHECK VALVE, AND PILE CONSTRUCTION METHOD
To provide a nozzle with a check valve for a pile construction device with excellent sealing performance, a pile construction device with a check valve using the same, and a pile construction method.SOLUTION: A nozzle with a check valve for a pile construction device, which is applied to be able to open and close a flow path to a pile construction device having a flow path for supplying a fluid into a pile hole, comprises an annular valve seat directed downstream in the fluid feed direction, a valve body having a seal edge which can be attached to and detached from the valve seat, a valve stem having one end connected to the valve body and extending upstream in the fluid supply direction from the valve body, a support portion provided upstream of the valve seat in the fluid supply direction and slidably supporting the valve stem in the axial direction of the valve stem, a spring seat attached to the other end of the valve stem, and a coil spring disposed between the support portion and the spring seat and biasing the valve body toward the valve seat. When the valve is closed, the valve body makes linear contact with the valve seat.SELECTED DRAWING: Figure 3
【課題】シール性に優れた杭構築装置用の逆止弁付きノズル、それを用いた逆止弁付き杭構築装置、及び、杭構築方法を提供する。【解決手段】杭構築装置用の逆止弁付きノズルは、杭孔内に流体を供給するための流路を有する杭構築装置に対し流路を開閉可能に適用される杭構築装置用の逆止弁付きノズルにおいて、流体の供給方向にて下流側に向けられた環状の弁座と、弁座に対し接離可能なシール縁を有する弁体と、弁体に接続された一端部を有し、弁体から流体の供給方向にて上流側に向けて延在する弁棒と、流体の供給方向にて弁座よりも上流側に設けられ、弁棒を弁棒の軸線方向に摺動自在に支持する支持部と、弁棒の他端側に取り付けられたばね座部と、支持部とばね座部との間に配置され、弁体を弁座に向けて付勢するコイルばねと、を備え、閉弁時に前記弁体は前記弁座に対して線接触する。【選択図】 図３
NOZZLE WITH CHECK VALVE FOR PILE CONSTRUCTION DEVICE, PILE CONSTRUCTION DEVICE WITH CHECK VALVE, AND PILE CONSTRUCTION METHOD
杭構築装置用の逆止弁付きノズル、逆止弁付き杭構築装置、及び、杭構築方法
YAMAMOTO ISAO (author) / MOROKOSHI EIJI (author)
2019-05-30
Patent
Electronic Resource
Japanese
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