公开(公告)号：US4217921A

公开(公告)日：1980-08-19

申请号：US916241

申请日：1978-06-16

申请人： Robert R. Gidner

发明人： Robert R. Gidner

IPC分类号： E03C1/10 ,  F16K24/00

CPC分类号： E03C1/108 ,  Y10T137/2544 ,  Y10T137/3331 ,  Y10T137/784 ,  Y10T137/7843 ,  Y10T137/7866 ,  Y10T137/7889

摘要： This invention relates to an in-line back flow preventer valve for fluid supply lines of the reduced pressure zone type. The valve body has an inlet means and a discharge means for liquid flow therethrough. A first chamber, within the valve body, is in liquid communication with the valve inlet, with the first chamber having at least one outlet positioned in the periphery thereof. At the outer periphery of the first chamber is a first flexible member which is adapted to seal the peripheral outlet through elastic pressure under the static or back flow pressure condition within the valve. A second chamber commonly referred to as a reduced pressure zone is positioned outside the first chamber and has at least one outlet in the periphery thereof. Mounted at the outer periphery of the second chamber is a second flexible member adapted to seal the peripheral opening through elastic pressure when the valve is under the back flow or static pressure condition. The second flexible member is further adapted to allow liquid flow communication between the second chamber and the discharge means through the peripheral outlet during forward liquid flow within the valve.

摘要翻译： 本发明涉及一种用于减压区类型的流体供应管线的直列式逆流防止阀。 阀体具有入口装置和用于液体流过其的排出装置。 阀体内的第一室与阀入口液体连通，第一室具有位于其周边的至少一个出口。 在第一室的外周边处是第一柔性构件，其适于在阀内的静态或反向流动压力条件下通过弹性压力来密封外围出口。 通常称为减压区的第二室位于第一室的外部，并且在其周边具有至少一个出口。 安装在第二室的外周上的是第二柔性构件，其适于当阀处于回流或静压条件下时通过弹性压力密封外围开口。 第二柔性构件还适于允许在阀内的正向液体流动期间通过外围出口在第二腔室和排放装置之间的液体流动连通。

公开(公告)号：US4272052A

公开(公告)日：1981-06-09

申请号：US36524

申请日：1979-05-07

申请人： Robert R. Gidner

发明人： Robert R. Gidner

IPC分类号： E03D3/00 ,  E03D3/04 ,  F16K1/00 ,  F16K21/16 ,  F16K25/00 ,  F16K31/143

CPC分类号： F16K25/00 ,  E03D3/04 ,  F16K21/16

摘要： A flush valve for releasing a predetermined volume of liquid upon actuation thereof includes a valve housing having an inlet, an outlet, a valve seating surface circumventing the inlet and a piston housing portion adjacent to the outlet. The piston is movable between an opened and a closed position and has one end sealable with the valve seating surface when the piston is in the closed position to block the flow of liquid from the inlet to the outlet. Upon actuation of the valve, the piston is unsealed from the seating surface to permit liquid to flow from the inlet to the outlet. The other end of the piston is sealed to the piston housing portion and a control chamber is provided having an expanding portion between the piston and the piston housing portion. Restricted flow of liquid from the control chamber to the outlet is permitted. Means are provided for selectively conducting the pressurized liquid from the inlet to the control chamber to create a resultant force urging the piston to the open position upon actuation of the valve and for disconnecting the pressurized liquid from the inlet to the control chamber when the piston reaches the open position. Means are provided for adjusting the predetermined volume of the liquid released by the flush valve upon actuation thereof and for limiting the volume of liquid released by the flush valve to the predetermined amount.

摘要翻译： 用于在致动时释放预定体积的液体的冲洗阀包括具有入口，出口，围绕入口的阀座表面和邻近出口的活塞壳体部分的阀壳体。 活塞可在打开位置和关闭位置之间移动，并且当活塞处于关闭位置时阻止液体从入口到出口的流动，其一端可与阀座表面密封。 在阀的致动时，活塞从就座表面开封，以允许液体从入口流到出口。 活塞的另一端被密封到活塞壳体部分，并且设置有在活塞和活塞壳体部分之间具有扩张部分的控制室。 允许液体从控制室限制到出口。 提供了用于选择性地将加压液体从入口传导到控制室的装置，以在活塞致动时产生推动活塞到打开位置的合力，并且当活塞达到时将加压液体从入口到控制室断开 开仓。 提供了用于调节在其启动时由冲洗阀释放的液体的预定体积的量并且用于将由冲洗阀释放的液体的体积限制到预定量的装置。