一种波纹管密封笼式双座调节阀

Corrugated pipe sealing cage-type double-seat regulating valve

Abstract

本实用新型公开了一种波纹管密封笼式双座调节阀,其特征在于:所述阀芯组件与阀杆连接,所述阀杆上端伸出上阀盖,下端与阀芯连接处的上侧设有环形阀杆凸台,所述中阀盖的空腔上端口设有中隔环,所述中隔环与所述上阀盖、中阀盖密封连接,所述中隔环中心设有一个供阀杆穿过的安装孔,所述中阀盖空腔内设有波纹管,所述波纹管套在阀杆上,所述波纹管上端密封固定连接在中隔环底部,下端密封固定连接在阀杆凸台上。本实用新型密封性好、安全性能高,可以广泛应用在剧毒、强腐蚀性、放射性等特殊介质的自动控制系统中。
The utility model discloses a corrugated pipe sealing cage-type double-seat regulating valve. The corrugated pipe sealing cage-type double-seat regulating valve is characterized in that a valve core assembly is connected with a valve rod, the upper end of the valve rod extends out of an upper valve cover, an annular valve rod boss is arranged on the upper side of the connecting part of the lower end of the valve rod and the valve core assembly, an upper end opening of a hollow cavity of a middle valve cover is provided with a middle spacer ring, the middle spacer ring is connected with the upper valve cover and the middle valve cover in a sealed mode, the center of the middle spacer ring is provided with an installing hole used for penetrating of the valve rod, a corrugated pipe is arranged inside the hollow cavity of the middle valve cover, the valve rod is sleeved with the corrugated pipe, the upper end of the corrugated pipe is fixedly connected with the bottom of the middle spacer ring in a sealed mode, and the lower end of the corrugated pipe is fixedly connected with the valve rod boss in a sealed mode. The corrugated pipe sealing cage-type double-seat regulating valve has the advantages of being good in leakproofness, high in safety performance, and widely applicable to an automatic control system with special mediums such as highly toxic, strongly corrosive and radioactive mediums.

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    Publication numberPublication dateAssigneeTitle
    CN-106015589-AOctober 12, 2016浙江科海仪表有限公司防堵防漏熔盐角形调节阀