A high reliability elastic soft sealing gate valve, which comprises a hand wheel, valve stem, valve cover, valve body and valve plate, both ends of the channel of the valve body are medium inlet and outlet, the valve cover is installed on the valve body, the valve rod is connected through a valve cover and the valve plate, the top is connected with a hand wheel, a micro convex arc wall body is located in the channel the bottom of the valve plate, the valve plate on the bottom surface of the concave hole is arranged for micro convex arc insertion, convex arc surface height of 2 ~ 6mm. The bottom wall of the inlet and outlet of the medium has an arc conical surface, the tip of the curved cone face outward, and the angle of the inclined angle is 3 to 8 degrees, and the preferred 5 degree is preferred. When the valve plate is closed down after the micro convex arc can be inserted into the concave hole, a lower supporting point, and the upper part of the valve rod support, so that the original suspension valve plate into both the upper and the lower supporting structure, completely solve the original soft sealing gate valve because the valve plate does not support the problem caused by the valve plate is easy to produce displacement and damage life is not long, and the effect of sealing.
【技术实现步骤摘要】
一种高可靠性弹性软密封闸阀
本专利技术涉及一种阀门,具体讲是一种高可靠性弹性软密封闸阀。
技术介绍
闸阀的启闭件是阀板,阀板的运动方向与介质流动方向相垂直,闸阀一般作全开和全关来使用,不能调节和节流。阀板有两个密封面,最常用的模式是,阀板两个密封面呈楔形,楔形角随阀门参数而异,通常为5°。楔式闸阀的阀板可以做成一个整体,密封面镶铜或不同型号钢,叫做刚性阀板,此类闸阀被称为金属硬密封闸阀,以下简称硬密封闸阀;也可以做成能产生微量变形的阀板,在阀板铸件上覆上不同型号的橡胶,以改善其工艺性,这种阀板叫做弹性阀板,此类闸阀被称为弹性软密封闸阀,以下简称软密封闸阀。硬密封闸阀的阀体通道中心部位有一楔形凹槽,阀板下部插入楔形凹槽中,利用楔形结构压紧密封。由于凹槽的存在,使阀板在受到轴向介质压力时形成上下均有支撑,避免了阀板的位移。正是由于阀体通道有一楔形凹槽,使得介质流向受到限制,存在扰流、压力降低现象,在通水洗管后往往砂石、水泥、铁屑、杂物等易淤积于凹槽内,造成无法紧密关闭而造成漏水现象,同时杂质的存在也易产生二次污染,特别是在饮用水工程中。通常,软密封闸阀的阀体通道处没有 ...
【技术保护点】
一种高可靠性弹性软密封闸阀,包括阀杆(11)、阀盖(12)、阀体(14)以及位于阀体(14)内腔中的阀板(16),阀体通道的两端分别为介质进口(15)和介质出口(19),所述阀盖(12)装在阀体(14)上,阀杆(11)底部穿过阀盖(12)与阀板(16)连接,阀杆(11)顶部与驱动装置连接,其特征在于:位于阀板(16)下方的阀体通道底壁上设置有微凸圆弧面(17),所述阀板(16)底面上设有供微凸圆弧面(17)插入的凹孔(18)。
【技术特征摘要】
1.一种高可靠性弹性软密封闸阀,包括阀杆(11)、阀盖(12)、阀体(14)以及位于阀体(14)内腔中的阀板(16),阀体通道的两端分别为介质进口(15)和介质出口(19),所述阀盖(12)装在阀体(14)上,阀杆(11)底部穿过阀盖(12)与阀板(16)连接,阀杆(11)顶部与驱动装置连接,其特征在于:位于阀板(16)下方的阀体通道底壁上设置有微凸圆弧面(17),所述阀板(16)底面上设有供微凸圆弧面(17)插入的凹孔(18)。2.根据权利要求1所...
【专利技术属性】
技术研发人员:赵敏,王胜原,王舟一,
申请(专利权)人:铜陵天海流体控制股份有限公司,
类型:发明
国别省市:安徽,34
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