The invention relates to a bidirectional sealed gate valve, which comprises a valve body, a valve body with a valve chamber and an actuator connected, a valve body with two relative seats and two valve plates corresponding to the valve chamber, a transmission mechanism in the valve chamber, a transmission mechanism connected with the actuator, and a sealed transmission state and a valve through transmission state. In the sealed transmission state, the two valve plates are far away from each other, thus, the valve chamber is provided with a transmission mechanism. Two seats are fitted separately; under the valve-through transmission condition, the two valve plates are close to each other and separated from the two seats respectively. The bidirectional sealing gate valve provided by the present invention realizes bidirectional sealing through two valve plates joining with two seat sealing surfaces of the valve body respectively, and the sealing is more reliable and the sealing effect is better. Through the transmission mechanism, the two valve plates are close to each other or far away, especially the two valve plates are close to each other to release the seal, so as to avoid the relative sliding between the valve plate and the sealing surface of the valve seat, effectively reduce the wear of the sealing surface and ensure the sealing effect.
【技术实现步骤摘要】
双向密封闸阀
本专利技术属于阀门
,具体涉及一种双向密封闸阀。
技术介绍
在工业生产中,管道内介质的压力、流向等会随着生产工况而变化,经常出现在不同工况下管道内介质的流向及高、低压侧相反的情况。而普通的闸阀往往只有一侧设有密封面,只能承受对应一侧高压,当高压侧变成另一侧,密封效果大大减弱,有可能产生泄漏,影响生产甚至引发安全事故。如果采用2个闸阀相对安装,虽可实现双向密封,但增加了设备投资,且控制复杂,可靠性低。
技术实现思路
本专利技术实施例涉及一种双向密封闸阀,至少可解决现有技术的部分缺陷。本专利技术实施例涉及一种双向密封闸阀,包括阀体,所述阀体具有阀室且连接有执行机构,所述阀体上相对设置有两个阀座且于所述阀室内对应设有两个阀板;所述阀室内还设有传动机构,所述传动机构与所述执行机构连接并具有密封传动状态和阀通传动状态,所述密封传动状态下,两所述阀板相互远离从而分别与两所述阀座贴合;所述阀通传动状态下,两所述阀板相互靠近从而分别与两所述阀座分离。作为实施例之一,所述传动机构包括托板和两组传动单元,所述传动单元包括传动连杆和滑动构件,所述传动连杆两端分别与所述滑动构件及所述执行机构的输出端铰接,所述滑动构件另一端与对应的所述阀板连接,两所述滑动构件被限位为能在所述托板上滑动且能带动所述托板随所述执行机构的输出端移动。作为实施例之一,所述托板上固定有两个套筒,两所述滑动构件分别滑设于两所述套筒内且分别伸出对应的所述套筒至与所述阀板连接,所述滑动构件上设有环形抵接凸台且套设有回程弹簧,所述回程弹簧收容于所述套筒内且一端抵接于所述抵接凸台上而另一端抵接于所述套 ...
【技术保护点】
1.一种双向密封闸阀,包括阀体,所述阀体具有阀室且连接有执行机构,其特征在于:所述阀体上相对设置有两个阀座且于所述阀室内对应设有两个阀板;所述阀室内还设有传动机构,所述传动机构与所述执行机构连接并具有密封传动状态和阀通传动状态,所述密封传动状态下,两所述阀板相互远离从而分别与两所述阀座贴合;所述阀通传动状态下,两所述阀板相互靠近从而分别与两所述阀座分离。
【技术特征摘要】
1.一种双向密封闸阀,包括阀体,所述阀体具有阀室且连接有执行机构,其特征在于:所述阀体上相对设置有两个阀座且于所述阀室内对应设有两个阀板;所述阀室内还设有传动机构,所述传动机构与所述执行机构连接并具有密封传动状态和阀通传动状态,所述密封传动状态下,两所述阀板相互远离从而分别与两所述阀座贴合;所述阀通传动状态下,两所述阀板相互靠近从而分别与两所述阀座分离。2.如权利要求1所述的双向密封闸阀,其特征在于:所述传动机构包括托板和两组传动单元,所述传动单元包括传动连杆和滑动构件,所述传动连杆两端分别与所述滑动构件及所述执行机构的输出端铰接,所述滑动构件另一端与对应的所述阀板连接,两所述滑动构件被限位为能在所述托板上滑动且能带动所述托板随所述执行机构的输出端移动。3.如权利要求2所述的双向密封闸阀,其特征在于:所述托板上固定有两个套筒,两所述滑动构件分别滑设于两所述套筒内且分别伸出对应的所述套筒至与所述阀板连接,所述滑动构件上设有环形抵接凸台且套设有回程弹簧,所述回程弹簧收容于所述套筒内且一端抵接于所述抵接凸台上而另一端抵接于所述套筒的远离所述传动连杆的端壁上。4.如权利要求3所述的双向密封闸阀,其特征在于:所述...
【专利技术属性】
技术研发人员:金文浩,牟丹,张良,程文芳,王文聪,危丹锋,
申请(专利权)人:中冶南方工程技术有限公司,
类型:发明
国别省市:湖北,42
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