公开(公告)号：US5379984A

公开(公告)日：1995-01-10

申请号：US180205

申请日：1994-01-11

Applicant: George L. Coad ,  George Matthias

Inventor： George L. Coad ,  George Matthias

IPC: C23C14/00 ,  F16K1/18 ,  F16K51/02

CPC classification number: F16K1/18 ,  F16K51/02

Abstract: A vacuum gate valve includes a valve body having an opening therethrough and a valve seat surrounding the opening, and a swing gate assembly rotatable about a pivot axis between an open position and a closed position. The swing gate assembly includes a swing gate body, a resilient seal gasket mounted to the swing gate body so as to sealingly engage the valve seat in the closed position, and a spreader for flattening the resilient seal gasket in a region that engages the valve seat. The gate valve further includes an actuator for rotating the swing gate assembly between the open position and the closed position. In a preferred embodiment, the seal gasket is a resilient tube, and the spreader is located within the tube. The swing gate assembly may include a mechanism for adjusting the spreader to thereby adjust the tension applied to the seal gasket.

Abstract translation: 真空闸阀包括具有穿过其中的开口的阀体和围绕开口的阀座，以及围绕枢转轴线在打开位置和关闭位置之间旋转的摆动门组件。 摆门组件包括摆动门体，安装在摆动门体上的弹性密封垫片，以便在关闭位置密封地接合阀座;以及吊具，用于使弹性密封垫片在与阀座接合的区域中变平 。 闸阀还包括用于在打开位置和关闭位置之间旋转摆门组件的致动器。 在优选实施例中，密封垫片是弹性管，并且扩张器位于管内。 摆门组件可以包括用于调节撒布机从而调节施加到密封垫圈的张力的机构。