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    • 5. 发明申请
    • VALVE FOR POWDER
    • 粉饼阀
    • US20120037833A1
    • 2012-02-16
    • US13202778
    • 2009-03-26
    • Takayuki MiyazakiYasuhide TakedaShigeo FukuiShinji TakahashiTakashi Arai
    • Takayuki MiyazakiYasuhide TakedaShigeo FukuiShinji TakahashiTakashi Arai
    • F16K27/00
    • F16K5/0605B65G53/4658B65G65/4881
    • A powder valve is propose which is simple in structure and small in size, which can prevent powder from getting stuck in the valve, and can withstand high feed pressure. The valve includes a valve casing 21, a valve shaft 25, and a valve body 22 mounted in the valve casing 21 and supported by the valve shaft 25. The valve body 22 has a spherical outer surface 27 configured to be brought into contact with a valve seat 23 of the valve casing 21 to close the valve. The valve body 22 is formed with a communication hole 26 extending in a direction perpendicular to the valve shaft 25 so that when the valve body 22 is rotated about the valve shaft 25 in either of two opposite directions from the closed position, the valve is configured to open through the communication hole 26. The communication hole 26 is open on the back side of the valve body 22 over the entire length thereof. With this arrangement, it is possible to ensure the advantages of a ball valve, i.e. full-bore properties and high rigidity. Since the pressure of powder flowing through the communication hole 26 acts on the inner periphery of the valve casing 21, the flow of powder blows off and removes any powder which could otherwise get stuck on the inner periphery of the valve casing 21. By rotating the valve body 22 in both directions, powder can be removed on both sides of the valve shaft 25.
    • 提出一种结构简单,体积小的粉末阀,可以防止粉末卡在阀中,并能承受高的进料压力。 阀包括阀壳体21,阀轴25和安装在阀壳体21中并由阀轴25支撑的阀体22.阀体22具有球形外表面27,其被构造成与 阀壳21的阀座23关闭阀。 阀体22形成有沿垂直于阀轴25的方向延伸的连通孔26,使得当阀体22在关闭位置的两个相反方向中的任一个中使阀体22围绕阀轴25旋转时,阀被配置 通过连通孔26打开。连通孔26在阀体22的整个长度的后侧开口。 通过这种布置,可以确保球阀的优点,即全孔特性和高刚性。 由于流过连通孔26的粉末的压力作用在阀壳体21的内周上,所以粉末的流动吹出并除去否则会粘附在阀壳体21的内周上的任何粉末。通过旋转 阀体22在两个方向上可以在阀轴25的两侧去除粉末。