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1. 发明授权

US3932065A Pneumatically controlled liquid transfer system 失效
标题翻译：气动控制液体输送系统
公开(公告)号：US3932065A
公开(公告)日：1976-01-13
申请号：US522012
申请日：1974-11-08
申请人： Guenter Ginsberg , Thomas John Godin , Ronald Olin Simpson
发明人： Guenter Ginsberg , Thomas John Godin , Ronald Olin Simpson
IPC分类号： F04B7/02 , F04B9/12 , F16K7/06 , G01F11/02 , G01F15/00 , G01N1/00 , F04B9/00 , F04B17/00
CPC分类号： G01N35/1097 , F04B7/0275 , F04B9/12 , F16K7/06 , G01F11/021 , G01F15/005 , Y10T137/86919
摘要： A pneumatically controlled liquid transfer system for delivering a liquid from a source to a delivery location, said liquid source being provided with a pneumatic cylinder for driving the liquid from said source, a pneumatically operated pinch valve of the make-before-break type and flexible conduit paths leading through the valve to the delivery location. The make-before-break pinch valve comprises a valve shell having two pistons movable laterally therein. The shell has a window. One piston has a yoke, each arm thereof having a passageway, one aligned with the other. A stop extends between the arms of the yoke. One of the flexible conduits is arranged through the window between the first piston and the yoke and the other flexible conduit is arranged also through the window but within the aligned passageways and between the piston and post. The second piston is spring biased to bear against the second conduit to place same in a normally closed condition. The first conduit is normally open. The first piston is acted upon by an external force such as air pressure to move same to a first condition wherein the piston pinches the first flexible conduit against the yoke, closing said conduit without overcoming the bias of the second piston to open the second conduit. Continued force exercised upon said first piston causes the same to move laterally within the housing to a second condition overcoming the spring bias of the second piston, to open the second conduit while the first conduit is retained in closed position. The second piston by virtue of its spring bias, will force the yoke back into its first position once the pressure on the first piston is laxed. A manual override is provided operative upon the second piston to lock the same in open condition so that both conduits are open. This last mentioned position is utilized during down time of the apparatus concerned.
摘要翻译：一种用于将液体从源输送到输送位置的气动控制液体转移系统，所述液体源设置有用于驱动来自所述源的液体的气缸，气动操作的断开前类型的弹性阀和柔性通过阀门到达输送位置的导管路径。制动前打击夹紧阀包括具有两个在其中横向移动的活塞的阀壳。外壳有一个窗口。一个活塞具有轭，每个臂具有通道，一个与另一个对准。止动器在轭的臂之间延伸。柔性管道中的一个布置成穿过第一活塞和轭之间的窗口，另一个柔性导管也布置在窗口内但是在对齐的通道内以及活塞和柱之间。第二活塞被弹簧偏压以抵靠第二导管以将其放置在常闭状态。第一个导管是常开的。第一活塞由诸如空气压力的外力作用，以将其移动到第一状态，其中活塞将第一柔性导管夹在轭上，闭合所述导管而不克服第二活塞的偏压以打开第二导管。在所述第一活塞上施加的持续力使其在壳体内横向移动到克服第二活塞的弹簧偏压的第二状态，以在第一导管保持在关闭位置时打开第二导管。第二活塞由于其弹簧偏压，一旦第一活塞上的压力下降，就会迫使轭回到其第一位置。在第二活塞上操作手动操作以将其锁定在开启状态，使得两个管道都是打开的。最后提到的位置在有关设备的停机时间被利用。

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