The utility model discloses a hidden stem type globe valve with anti-theft and check function, which is composed of a valve body, a valve cover, a valve stem and a disc assembly. The valve stem nut is mainly arranged between the lower end of the valve stem and the disc assembly. The valve stem nut can be lifted and moved by the rotation of the valve stem. When the stem driving stem nut moves down, the water hole in the closing valve body can be pushed up and pushed up. To achieve the cut-off function of the globe valve, the stem nut can also be driven by the stem to move up, which will generate a moving stroke between the disc assembly and the stem nut, so that the disc assembly and the water hole constitute a check opening and closing, in order to achieve the check function of the check valve. On the basis of retaining the reliable anti-theft effect of the concealed rod structure, the improved concealed rod cut-off valve can also have the functions of cut-off and check at the same time, so it has the characteristics of dual-purpose valve, easy to use and low construction cost. Meanwhile, the upper end of the stem is hidden in the additional cover, which can only be opened by special handwheel, and the anti-theft function is more reliable.
【技术实现步骤摘要】
一种带防盗止回功能暗杆式截止阀
本技术涉及一种给水系统中实施给水控制的暗杆式截止阀,尤其是指一种带防盗止回功能暗杆式截止阀。
技术介绍
目前,在给水系统中普遍应用的截止阀为明杆结构,操作时随着截止阀的开启或关闭,阀杆和操作手轮也随之上升或下降,阀杆和操作手轮均裸露在外面,则难以对其进行锁闭防盗控制,给物业及房屋建设单位为防止盗水和用水管理带来困扰;因此,带防盗功能的暗杆式截止阀即应运而生,其结构主要是由阀体、密封安装在阀体顶部安装孔内的阀盖、转动密封安装在阀盖内的阀杆和设置在阀体的通水孔上方的阀瓣组件等构成,该阀瓣组件与阀杆下端设为螺纹连接结构,当操作阀杆正反转动时,就能将阀杆的旋转运动转换成阀瓣组件相对阀杆的升降移动,从而实现了阀瓣组件密封启闭通水孔。由于上述暗杆式截止阀的阀杆只有自转而无升降,相比明杆式截止阀防盗效果更加明显;然而,不管是明杆式截止阀还是暗杆式截止阀,它们都无法进行回水控制,即不具备防止水倒流的止回功能,则在需要进行回水控制的给水系统中,通常需要另外再安装止回阀来防止水倒流,既会增加施工成本,也给使用带来不便。
技术实现思路
本技术所要解决的技术问 ...
【技术保护点】
1.一种带防盗止回功能暗杆式截止阀,包括阀体(1)、密封安装在阀体顶部安装孔内的阀盖(5)、转动密封安装在阀盖(5)内的阀杆(4)和设置在阀体(1)的通水孔(12)上方的阀瓣组件(2),其特征在于所述的阀杆(4)下端设有阀杆螺母(3),该阀杆螺母受阀杆(4)转动而作升降移动,且阀杆螺母(3)移动下降并顶推所述阀瓣组件(2)密封关闭通水孔(12)或阀杆螺母(3)移动上升,该阀瓣组件(2)与通水孔(12)构成止回启闭。
【技术特征摘要】
1.一种带防盗止回功能暗杆式截止阀,包括阀体(1)、密封安装在阀体顶部安装孔内的阀盖(5)、转动密封安装在阀盖(5)内的阀杆(4)和设置在阀体(1)的通水孔(12)上方的阀瓣组件(2),其特征在于所述的阀杆(4)下端设有阀杆螺母(3),该阀杆螺母受阀杆(4)转动而作升降移动,且阀杆螺母(3)移动下降并顶推所述阀瓣组件(2)密封关闭通水孔(12)或阀杆螺母(3)移动上升,该阀瓣组件(2)与通水孔(12)构成止回启闭。2.根据权利要求1所述的一种带防盗止回功能暗杆式截止阀,其特征在于所述的阀杆螺母(3)内设有轴向贯穿的螺纹孔,该阀杆螺母(3)通过所述螺纹孔螺纹连接在阀杆(4)下端,并受阀杆转动而作升降移动。3.根据权利要求2所述的一种带防盗止回功能暗杆式截止阀,其特征在于所述的阀杆(4)下端设有行程孔(41),所述的阀瓣组件(2)上设有向上延伸的导向杆(24)。4.根据权利要求3所述的一种带防盗止回功能暗杆式截止阀,其特征在于所述的阀杆螺母(3)移动上升而使阀瓣组件(2)与通水孔(12)构成止回启闭,该导向杆(24)上端穿过阀杆螺母(3...
【专利技术属性】
技术研发人员:陈为民,
申请(专利权)人:宁波埃美柯铜阀门有限公司,
类型:新型
国别省市:浙江,33
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