气动刀闸阀介绍
气动刀闸阀 气动阀门价格表 气动管夹阀 气动角座阀
闸阀 的作用是利用阀瓣沿通路中心的垂直线方向移动来实现开启或关闭管道通路。闸阀的主要启闭零件是阀瓣和阀座。闸板与流体流向垂直，改变阀瓣与阀座间的相对位置，既可改变通道截面面积大小，从而改变流量。为了保证关闭严密，阀瓣与阀座密封面进行的研磨。闸阀的特点是结构复杂，尺寸较大，www.123628.com价格较高；开启缓慢，无水锤现象，易调节流量；缺点是密封面较大，容易磨损。闸阀（左图）：1—楔式闸板；2—阀体；3—阀盖；4—阀杆；5—填料；6—填料压盖；7—套筒螺栓；8—压紧环；9—手轮；10—压紧螺母；11—键；12—阀盖垫。闸阀（右图）：（暗杆平行式）1--楔形闸瓣；2--套筒螺母；3--阀体；4--阀杆；5--阀盖；6--止推凸肩；7--填料函法兰；8--填料；9—填料压盖；10--手轮；11--阀盖垫。
Valve is the role of central valve along the pathway of vertical lines move to achieve open or closed pipeline access road. Valve parts is the main hoist valve and the valve seat. Ram and fluid flow of vertical and change the valve and the relative position of the valve seat can change the channel cross-section the size, so as to change the flow. To ensure tight closure, and the valve seat valve sealing surface of the ground. Valve is characterized by complex structure, size larger, higher prices; opened slowly, water hammer phenomenon and easy to regulate traffic; shortcomings sealing surface is larger, easy to wear. Valve (left): 1 - wedge-ram; 2 - Valve; 3 - valve cover; 4 - stem; 5 - packing; 6 - Packing Gland; 7 - sleeve bolt; 8 - pinched Central ; 9 - hand wheel; 10 - pinched nut; 11 - bond; 12 - valve cover pad. Valve (right): (dark-parallel) 1 - wedge-shaped gate valve; 2 - sleeve nut; 3 - Valve; 4 - stem; 5 - valve cover; 6 - Thrust Convex shoulder; 7 - Packing letter flange; 8 - packing; 9 - Packing Gland, 10 - hand wheel; 11 - valve cover pad.
