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1. 发明授权

US06216729B1 Bidirectional check valve for hydraulic system 无效
标题翻译：液压系统双向止回阀
公开(公告)号：US06216729B1
公开(公告)日：2001-04-17
申请号：US09612773
申请日：2000-07-10
申请人： Hugh Hambly , Brian Thornton
发明人： Hugh Hambly , Brian Thornton
IPC分类号： F16K1726
CPC分类号： F15B13/027 , F15B11/044 , F15B20/005 , F15B2211/20538 , F15B2211/30505 , F15B2211/30525 , F15B2211/3056 , F15B2211/615 , F15B2211/71 , F15B2211/8636 , F16K17/196 , Y10T137/7771
摘要： A bidirectional check valve controls movement of fluid. A valve body has an opening, a further opening and a passage connecting the opening and the further opening. A poppet is disposed within the passage of the valve body, and a spring is coupled to the poppet. A further poppet is disposed within the passage formed in the first mentioned poppet, and a further spring is coupled to the poppet and to the further poppet. When fluid passing through the opening in the valve body exerts a force on the poppet that is greater than the spring force, the further portion of the outer surface of the poppet is directed away from the further portion of the wall of the passage and permits the fluid to flow from the opening in the valve body through a channel and to the further opening in the valve body. When fluid passing through the further opening in the valve body exerts a force on the further poppet that is greater than the further spring force, the further portion of the outer surface of the further poppet is directed away from the further opening in the valve body to open a further channel in the poppet and permit the fluid to flow from the further opening in the valve body through the further channel, at least one opening in the further poppet, a further passage in the further poppet, a further opening in the further poppet and an opening in the poppet to the opening of the valve body.
摘要翻译：双向止回阀控制流体的运动。阀体具有开口，另外的开口和连接开口和另一开口的通道。提升阀设置在阀体的通道内，并且弹簧联接到提升阀。另一个提升头设置在形成于第一提升提升阀内的通道内，另一弹簧联接到提升阀和另一提升阀。当通过阀体中的开口的流体在提升阀上施加大于弹簧力的力时，提升阀的外表面的另一部分被引导离开通道的壁的另外部分，并允许流体从阀体中的开口通过通道流到阀体中的另一开口。当通过阀体中另外的开口的流体在另外的提升阀上施加大于另外的弹簧力的力时，另一个提升阀的外表面的另一部分被引导离开阀体中的另外的开口，在提升阀中打开另一个通道并允许流体从阀体中的另外的开口流过另一个通道，另一通道中的至少一个开口，另一个提升阀中的另一个通道，另一个通道中的另一通道以及提升阀的开口到阀体的开口。

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