A cylindrical valve includes a hollow cylindrical body, and the valve body is vertically connected with an upper valve body, valve body, the upper body, lower body is a hollow cylindrical and overlapping axis, an upper valve body and the inner wall of the lower valve body is provided with an internal thread, the cylindrical valve flap is arranged in an external thread on the valve body, the valve flap the body length is greater than the cross-sectional diameter of the valve is fixedly connected with the valve rod, the valve body is arranged on the valve cover, the valve stem passes through the valve cover and the end is connected with a handle, the valve is provided with a bottom and a side wall connected channel, lower valve arranged at the lower end of the valve cover, the valve cover seal valve body the lower end. By setting the upper and lower valve body and a central axis superposed on the valve body, valve, the inner wall of the valve body is provided with internal threads, the outer wall of the valve is provided with external thread, in order to maintain the body fluid channel is linear when the valve sealing, no resistance, reduce the body wall impact wear, prolong the cut-off valve the service life.
【技术实现步骤摘要】
圆柱形截止阀
本技术涉及阀体
,具体涉及一种圆柱形截止阀。
技术介绍
截止阀又称截门阀,属于强制密封式阀门,所以在阀门关闭时,必须向阀瓣施加压力,以强制密封面不泄漏。当介质由阀瓣下方进入阀门时,操作力所需要克服的阻力,是阀杆和填料的摩擦力与由介质的压力所产生的推力,关阀门的力比开阀门的力大,所以阀杆的直径要大,否则会发生阀杆顶弯的故障。按连接方式分为三种:法兰连接、丝扣连接、焊接连接。从自密封的阀门出现后,截止阀的介质流向就改由阀瓣上方进入阀腔,这时在介质压力作用下,关阀门的力小,而开阀门的力大,阀杆的直径可以相应地减少。同时,在介质作用下,这种形式的阀门也较严密。我国阀门“三化给”曾规定,截止阀的流向,一律采用自上而下。截止阀开启时,阀瓣的开启高度,为公称直径的25%~30%时.流量已达到最大,表示阀门已达全开位置。所以截止阀的全开位置,应由阀瓣的行程来决定。现有截止阀阀体内水流走向为弯曲状,这会产生较大的流体阻力,不利于流体流动,同时长时间会对阀体产生磨损,导致密封效果变差,可能会产生泄露风险。
技术实现思路
本技术所要解决的技术问题在于克服现有的技术缺陷,提供一种圆柱形截止阀。本技术所要解决的技术问题采用以下的技术方案来实现:一种圆柱形截止阀,包括中空圆柱形阀体,阀体一端为进口端,与进口端相对为出口端,与所述阀体垂直连接有上阀体、下阀体,所述上阀体、下阀体为中空圆柱形且中心轴线重合,上阀体、下阀体与阀体一体成形,上阀体、下阀体内壁设置有内螺纹,带有外螺纹的圆柱形阀瓣置于上阀体内,阀瓣长度大于阀体截面直径,阀瓣上端与阀杆固定连接,上阀体上端设置上阀盖,阀 ...
【技术保护点】
一种圆柱形截止阀,包括中空圆柱形阀体,阀体一端为进口端,与进口端相对为出口端,其特征在于:与所述阀体垂直连接有上阀体、下阀体,所述上阀体、下阀体为中空圆柱形且中心轴线重合,上阀体、下阀体与阀体一体成形,上阀体、下阀体内壁设置有内螺纹,带有外螺纹的圆柱形阀瓣置于上阀体内,阀瓣长度大于阀体截面直径,阀瓣上端与阀杆固定连接,上阀体上端设置上阀盖,阀杆穿过阀盖并在其末端连接有手柄,阀瓣内设有与底部和侧壁连通的通道,下阀体下端设置下阀盖。
【技术特征摘要】
1.一种圆柱形截止阀,包括中空圆柱形阀体,阀体一端为进口端,与进口端相对为出口端,其特征在于:与所述阀体垂直连接有上阀体、下阀体,所述上阀体、下阀体为中空圆柱形且中心轴线重合,上阀体、下阀体与阀体一体成形,上阀体、下阀体内壁设置有内螺纹,带有外螺纹的圆柱形阀瓣置于上阀体内,阀瓣长度大于阀体截面直径,阀瓣上端与阀杆固定连接,上阀体上端设置上阀盖,阀杆穿过阀盖并...
【专利技术属性】
技术研发人员:徐正贵,王云凤,钱宗保,陶正庚,刘建萍,
申请(专利权)人:安徽格兰富机械设备有限公司,
类型:新型
国别省市:安徽,34
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