The utility model relates to a double-sealed parallel shutoff gate valve, which relates to the technical field of a valve. The valve body, the valve seat, the auxiliary gate plate, the main gate plate, the valve stem and the valve cover are provided with a valve cover at the upper end of the valve body, the valve cover and the valve body are connected by bolt fasteners, the valve stem and the main gate plate are installed in coaxial through a T-shaped structure, and the main gate plate and the auxiliary gate plate are connected by screws. A O-ring is installed between the main gate and the auxiliary gate, a valve seat is installed between the main gate and the valve body, and a wavy spring is installed between the valve seat and the valve body. This patent effectively enhances the metal hard sealing ability and reduces the difficulty of machining the sealing surface by means of the structure design of the double extrusion seal. At the same time, the soft sealing structure and the metal hard sealing structure complement each other, enhance the sealing performance, prolong the valve's repair cycle, and ensure the long-term effective application of the valve. Compared with the traditional structure, the structure is reasonable and easy to process, and the operation is convenient and safe.
【技术实现步骤摘要】
一种双密封平行切断闸阀
本技术涉及一种阀门技术,特别是一种双密封平行切断闸阀。
技术介绍
“科技创新,自主创新”已成为我国目前工业发展的主流,我国工农业逐步向集约型,节能减排,低碳的方向发展。平行切断闸阀是一种截止阀,作用是接通或者截断管路中的介质。平行切断闸阀被广泛的应用在油品、天然气管线等行业,在国民经济中占有举足轻重的地位。目前市场上生产的大部分平行切断闸阀,一般采用闸板与阀座硬密封形式。硬密封一般需要密封面有很高的加工精度,并且需要较大的相互作用力才能保证密封性,但市面上大部分平行切断闸阀只通过阀杆的挤压使闸板与阀座紧密接触,密封性得不到保证。为了解决以上问题,科研单位和企业科技人员在不断的研究、探索,利用现代科学技术,对现有平行切断闸阀的结构进行改进,虽然在技术上取得了一些进步,但在实际运用中仍然存在着尚未克服的技术难题。
技术实现思路
本技术的目的在于克服以上不足,提供一种双密封平行切断闸阀。该平行切断闸阀通过对主闸板、副闸板与阀座密封方式进行新的结构设计,使平行切断闸阀拥有双重密封形式,有效的优化了阀座与闸板的密封结构,强化了密封性能,密封效果好,适应多种工作环境,确保阀门长期有效应用,操作安全方便。本技术解决其技术问题所采用的技术方案是:含有阀体、阀座、副闸板、主闸板、阀杆、阀盖,阀体的上端设有阀盖,阀盖与阀体通过螺栓紧固件相连接,阀杆和主闸板通过T形结构同轴安装,主闸板与副闸板通过螺钉相连接,主闸板与副闸板之间安装有O型密封圈,在主闸板与阀体之间安装有阀座,阀座与阀体之间安装有波形弹簧,组成了一种双密封平行切断闸阀。本技术采用的技术原理是:采 ...
【技术保护点】
1.一种双密封平行切断闸阀,含有阀体、阀座、副闸板、主闸板、阀杆、阀盖,阀体的上端设有阀盖,阀盖与阀体通过螺栓紧固件相连接,阀杆和主闸板通过T形结构同轴安装,主闸板与副闸板通过螺钉相连接,主闸板与副闸板之间安装有O型密封圈,在主闸板与阀体之间安装有阀座,阀座与阀体之间安装有波形弹簧,组成了一种双密封平行切断闸阀。
【技术特征摘要】
1.一种双密封平行切断闸阀,含有阀体、阀座、副闸板、主闸板、阀杆、阀盖,阀体的上端设有阀盖,阀盖与阀体通过螺栓紧固件相连接,阀杆和主闸板通过T形结构同轴安装...
【专利技术属性】
技术研发人员:潘明尧,刘成美,卞菊芳,
申请(专利权)人:江苏九龙阀门制造有限公司,
类型:新型
国别省市:江苏,32
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