The invention relates to a flanged ball valve. The ball valve comprises a front valve body, a sealing cushion, a rear valve body, bolts, a seat, a sphere, an antistatic layer, a stem, a sealing ring, a lower packing sheath, a packing upper sheath, a wear-resistant sleeve, a disc spring, a nut and a protective cover. The front valve body and the rear valve body can be detachably connected to the lower part of the valve seat, and the joint part of the ball body is provided with a sealing cushion. The ball body is arranged on the valve seat. The anti-static layer is arranged at one end of the valve stem, the other end of the valve stem is arranged on the disc spring, the outer side of the valve stem is provided with a sealing ring, the outer side of the sealing ring is provided with a filler, the two sides of the filler are provided with a filler upper sheath and a filler lower sheath, the wear-resistant sheath is arranged at the outer side of the disc spring, and the protective cover is connected to the top of the ball valve through a nut. The invention has the advantages of simple structure, good sealing performance, self-cleaning sealing surface, convenient opening and closing, small friction, small opening torque, stable operation, low production cost and long service life.
【技术实现步骤摘要】
一种法兰式球阀
本专利技术涉及一种管路阀门,尤其涉及一种法兰式球阀。
技术介绍
在将阀座环按压于插入到阀室的阀体(球体)而将阀体外周的滑动间隙封锁、并且将经由阀室与球体的上述滑动间隙的连通切断的球阀(称为金属接触球阀)中,在开闭阀部时,使阀座环从阀体分离而降低阀的操作转矩(例如,参照专利文献1)。对于上述专利文献1所公开的球阀,使阀座环形成为活塞构造并借助流体压力进行朝阀体的按压与从阀体的分离。将朝相反的方向对阀座环施加流体压力的2个压力室形成于阀座环的外周,当朝一方的压力室导入流体压力时,阀座环按压于阀体,当朝另一方的压力室导入流体压力时,阀座环从阀体分离。此外,即使使阀座环从阀体分离也会引起在支承阀体的部分的滑动。
技术实现思路
本专利技术为了解决以上问题提供了一种结构简单、密封性好、密封面自清洁、开闭方便、摩擦小、开启扭矩小、运行稳定、生产成本低、使用寿命长的法兰式球阀。本专利技术的技术方案是:所述的球阀包括前阀体、密封垫、后阀体、螺栓、阀座、球体、防静电层、阀杆、密封圈、填料下护套、填料、填料上护套、耐磨套、碟簧、螺母、防护罩,所述的前阀体和后阀体可拆卸连接在阀座下部,其结合部设置有密封垫,所述的球体设置在阀座上,所述的防静电层设置在阀杆的一端,所述的阀杆另一端设置在碟簧上,所述的阀杆外侧设置有密封圈,所述的密封圈外侧设置有填料,所述的填料两侧设置有填料上护套和填料下护套,所述的耐磨套设置在碟簧外侧,所述的防护罩通过螺母连接在球阀顶部。本专利技术结构简单、密封性好、密封面自清洁、开闭方便、摩擦小、开启扭矩小、运行稳定、生产成本低、使用寿命长。附图说明图 ...
【技术保护点】
1.一种法兰式球阀,其特征在于:所述的球阀包括前阀体、密封垫、后阀体、螺栓、阀座、球体、防静电层、阀杆、密封圈、填料下护套、填料、填料上护套、耐磨套、碟簧、螺母、防护罩,所述的前阀体和后阀体可拆卸连接在阀座下部,其结合部设置有密封垫,所述的球体设置在阀座上,所述的防静电层设置在阀杆的一端,所述的阀杆另一端设置在碟簧上,所述的阀杆外侧设置有密封圈,所述的密封圈外侧设置有填料,所述的填料两侧设置有填料上护套和填料下护套,所述的耐磨套设置在碟簧外侧,所述的防护罩通过螺母连接在球阀顶部。
【技术特征摘要】
1.一种法兰式球阀,其特征在于:所述的球阀包括前阀体、密封垫、后阀体、螺栓、阀座、球体、防静电层、阀杆、密封圈、填料下护套、填料、填料上护套、耐磨套、碟簧、螺母、防护罩,所述的前阀体和后阀体可拆卸连接在阀座下部,其结合部设置有密封垫,所述的球...
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