An object of the present invention is to provide a structure of the water outlet of the water level adjustment water used in underdrainage or soil irrigation facilities of the paddy field. A water outlet member 8 is provided with a fitting tube 12 that is inserted and fixed to the distal end of the water level control slide tube, a flange portion 13 provided at the upper portion of the fitting tube 12, the flange portion 13 a plurality of support frames 14 which extend upwardly from, and a stopper holding frame 15. which is arranged at the upper end of the support frame 14. The stopper member 9 forms an opening for inserting the operating handle on the top plate face 21 of the cap-like cylindrical body, a flange 23 is formed in the body portion of the cylindrical body, the stopper holding frame 15 below the flange 23 flange upper portion forms a convex portion 24 in the width to be fitted, to form an L-shaped leg 25 which extends further from the fitting convex portion 24 to the lower part of. In order to achieve the engagement and disengagement of the uneven engagement by the operating rod of the stopper holding member 15 and the stopper member 9 of the water outlet member 8, it can be operated easily even in the elderly and women and children.FIELD 9【課題】水田の暗渠排水あるいは土中灌水施設に用いられる水位調整水閘の出水口の構造を提供する。【解決手段】出水口部材8は、水位調整スライド管の先端に挿入固定される嵌合筒12と、該嵌合筒12の上部に設けたフランジ部13と、該フランジ部13から上方に延びた複数枚の支持枠14と、該支持枠14の上端に配置されたストッパー保持枠15とから構成される。ストッパー部材9は、キャップ状の円筒体の天板面21に操作桿を挿通する開口部を形成し、前記円筒体の胴部にフランジ23を形成し、前記フランジ23の下方にストッパー保持枠15のフランジ上部が嵌合する幅で嵌合凸部24を形成し、さらに該嵌合凸部24から下方へ延びるL状の脚部25を形成する。前記出水口部材8のストッパー保持部材15とストッパー部材9との凹凸嵌合により操作桿の係脱を図るため、高齢者や婦女子でも簡単に操作することができる。【選択図】図9
