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    • 10. 发明授权
    • Five-port switching valve with residual pressure exhaust valve
    • 五口开关阀带残压排气阀
    • US09528616B2
    • 2016-12-27
    • US14445591
    • 2014-07-29
    • SMC CORPORATION
    • Tatsuya NishiyamaTakashi MurakamiShinji Miyazoe
    • F15B20/00F16K11/10F16K15/18F16K11/07F15B13/08
    • F16K11/10F15B13/0892F15B20/00F16K11/07F16K15/18Y10T137/87233
    • A switching valve includes main valve constituted of a five-port electromagnetic switching valve settable to a closed-center position, and a residual pressure exhaust valve including an exhaust valve cavity communicating with a supply port of the main valve and two exhaust ports, two residual pressure discharge flow paths respectively communicating with the exhaust ports, two exhaust valve elements placed inside the exhaust valve cavity and driven by pressure air from the supply port to open and close the residual pressure discharge flow paths, and a release spring that biases the exhaust valve element in a direction to open the residual pressure discharge flow paths. While the pressure air is not supplied into the exhaust valve cavity through the supply port, the exhaust valve element opens the residual pressure discharge flow paths so as to discharge residual pressure from the exhaust port, and when pressure air is supplied into the exhaust valve cavity the exhaust valve element closes the residual pressure discharge flow path, and hence the residual pressure is not discharged from the exhaust port.
    • 切换阀包括由可设置在闭合中心位置的五口电磁切换阀构成的主阀和包括与主阀的供给口连通的排气阀腔和两个排气口的残压排气阀,两个残留 分别与排气口连通的压力排出流路,设置在排气阀腔内的两个排气阀元件,并由来自供给口的压力空气驱动,打开和关闭残余压力排出流路;释放弹簧,其使排气阀 元件在打开剩余压力排出流动路径的方向上。 当压力空气不通过供给口供给排气阀腔时,排气阀元件打开剩余压力排出流动路径,以排出来自排气口的残余压力,并且当压缩空气被供给到排气阀腔 排气阀元件关闭残余压力排出流路,因此残留压力不从排气口排出。