The utility model discloses a spherical double direction hard seal butterfly valve, which includes a driving device, a valve body, a valve shaft, a butterfly plate, a compound bearing, a valve seat, a press plate, a seal sleeve, a die spring, an end cover, a flat key and a O ring. The valve seat is fixed to the valve body through a press plate, a cylindrical hole is provided on the press plate, a die spring is installed in the cylindrical hole, and a mold spring is installed in the cylinder. The spring is used to promote the horizontal movement of the seat; the valve shaft includes the upper valve shaft and the lower valve shaft, the butterfly plate is connected with the upper valve shaft and the lower valve shaft, and the upper valve shaft and the lower valve shaft are supported by the composite bearings fixed to the ends of the valve body; the driving device drives the valve shaft through the flat key and the valve shaft drives the butterfly plate; the seal face of the butterfly plate and the seat sealing surface of the valve seat are spherical surface. Seal. The eccentricity design used in the utility model can effectively reduce the opening and closing torque of the valve and reduce the wear of the sealing surface. The seal surface of the butterfly plate and the seat sealing surface of the butterfly plate can be designed with a spherical seal, which makes the opening and closing of the butterfly plate good, and the valve seat floating structure is designed to realize the two-way seal of the valve.
【技术实现步骤摘要】
球面双向硬密封蝶阀
本技术涉及蝶阀,特别涉及球面双向硬密封蝶阀。
技术介绍
目前给排水行业普遍使用的三偏心硬密封蝶阀,在正向密封时,蝶板在介质力的作用下向有利于密封的方向变形,一般正向密封性能良好,在反向承压时,介质压力使蝶板向不利于密封的方向变形,反向承压能力较差,不能实现双向密封。而目前客户对于硬密封蝶阀的要求是必须双向密封、扭矩小、易维护。
技术实现思路
本技术的目的是为克服上述技术问题,提供一种结构简单,启闭扭矩小、安装拆卸方便、实现双向密封的硬密封蝶阀。为解决上述技术问题,本技术球面双向硬密封蝶阀,包括驱动装置、阀体、阀轴、蝶板、复合轴承、阀座、压板、密封套、模具弹簧、端盖、平键、O形圈,其特征在于:阀座经压板固定于阀体内,压板上设有圆柱孔,圆柱孔内装有模具弹簧,模具弹簧用于推动阀座水平移动;阀轴包括上阀轴与下阀轴,蝶板与上阀轴、下阀轴销连接传动,上阀轴与下阀轴经固定于阀体两端的复合轴承支撑;驱动装置经平键带动阀轴,阀轴带动蝶板;蝶板密封面、阀座密封面均为球面密封,阀座密封面的宽度为4~5mm,蝶板密封面的宽度大于阀座密封面的宽度,蝶板密封面与阀座密封面为球面相 ...
【技术保护点】
一种球面双向硬密封蝶阀,包括驱动装置(1)、阀体(6)、阀轴、蝶板(11)、复合轴承(14)、阀座(10)、压板(7)、密封套(4)、模具弹簧(8)、端盖(15)、平键(2)、O形圈(9),其特征在于:阀座(10)经压板(7)固定于阀体(6)内,压板(7)上设有圆柱孔(20),所述圆柱孔(20)内装有模具弹簧(8),模具弹簧(8)用于推动阀座(10)水平移动;所述阀轴包括上阀轴(5)与下阀轴(13),蝶板(11)与上阀轴(5)、下阀轴(13)销连接传动,上阀轴(5)与下阀轴(13)经固定于阀体两端的复合轴承(14)支撑;所述驱动装置(1)经平键(2)带动阀轴,阀轴带动蝶板( ...
【技术特征摘要】
1.一种球面双向硬密封蝶阀,包括驱动装置(1)、阀体(6)、阀轴、蝶板(11)、复合轴承(14)、阀座(10)、压板(7)、密封套(4)、模具弹簧(8)、端盖(15)、平键(2)、O形圈(9),其特征在于:阀座(10)经压板(7)固定于阀体(6)内,压板(7)上设有圆柱孔(20),所述圆柱孔(20)内装有模具弹簧(8),模具弹簧(8)用于推动阀座(10)水平移动;所述阀轴包括上阀轴(5)与下阀轴(13),蝶板(11)与上阀轴(5)、下阀轴(13)销连接传动,上阀轴(5)与下阀轴(13)经固定于阀体两端的复合轴承(1...
【专利技术属性】
技术研发人员:汪小峰,严杰,冯立斌,方忠平,吴劲松,
申请(专利权)人:英诺威阀业有限公司,
类型:新型
国别省市:安徽,34
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