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1. 发明授权

US5271430A Flow rate control valve device and flow force reduction structure 失效
标题翻译：流量控制阀装置和流量减小结构
公开(公告)号：US5271430A
公开(公告)日：1993-12-21
申请号：US920160
申请日：1992-07-27
申请人： Jun Muruyama , Koji Yamashita
发明人： Jun Muruyama , Koji Yamashita
IPC分类号： F16K3/24 , F16K3/34 , F16K11/07 , F16K1/36
CPC分类号： F16K3/24 , F16K11/0708 , F16K3/34 , Y10T137/7755 , Y10T137/86734 , Y10T137/86767
摘要： A flow rate control valve device for controlling and then supplying fluid under pressure to an actuator such as an hydraulic cylinder or the like which includes a valve body having a drain port kept at a low pressure and a main spool slidably mounted in the valve body to connect or disconnect the drain port with a pressure chamber. Notch grooves are formed on an outer peripheral surface of the main spool. A spring is interposed between the valve body and the main spool to urge the spool to a valve body seat. A pushing device is provided for pushing the main spool against the resilient force of the spring. A plate member is provided on the main spool in the drain port for causing pressurized flow through the notch grooves to flow first in a substantially radial direction of the main spool and subsequently into the drain port so part of the pressurized fluid impinges on the plate member for exerting a force urging the main spool in the direction disengaging the spool from the seat against a force of the spring and a flow force acting between the spool and the seat for at least cancelling the flow force.
摘要翻译：一种流量控制阀装置，用于控制压力下的流体并向液压缸等致动器供给，该致动器包括具有保持低压的排水口的阀体和可滑动地安装在阀体内的主阀芯，用压力室连接或断开排水口。在主卷轴的外周面形成有凹槽。弹簧插在阀体和主阀芯之间，以将阀芯推向阀体座。提供推动装置以克服弹簧的弹力来推动主卷轴。在排水口中的主阀芯上设有板构件，用于使加压流过缺口槽，首先在主阀芯的大致径向方向上流动，随后进入排水口，因此加压流体的一部分撞击板件用于施加力使得主阀芯沿着使阀芯脱离阀座的方向克服弹簧的力并且作用在阀芯和阀座之间的流动力至少抵消流动力的力。

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