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    • 2. 发明专利
    • Flow rate control valve and its manufacturing method
    • 流量控制阀及其制造方法
    • JP2010007776A
    • 2010-01-14
    • JP2008168583
    • 2008-06-27
    • Hino Motors LtdTaiho Kogyo Co Ltd大豊工業株式会社日野自動車株式会社
    • NAKAMURA KATSUMIIGUCHI SHINGOIHARA MIKI
    • F16K1/22F16K27/00
    • F16K1/2263F02D9/1045F02D9/107F02M35/10085F02M35/10255F16K27/0218Y10T29/49426Y10T137/0525Y10T137/6048
    • PROBLEM TO BE SOLVED: To provide a flow rate control valve, in which a portion near a radial step part of a gas passage of a housing is difficult to corrode, and its manufacturing method. SOLUTION: This flow rate control valve 1 comprises a housing 2, in which a gas passage 20 having a first cylindrical member housing part 21, a second cylindrical member housing part 22 and a radial step part 23 is formed; a first cylindrical member 3 housed in the first cylindrical member housing part 21, a second cylindrical member 4 housed in the second cylindrical member housing part 22, and a valve body 5 rotatably arranged inside the first cylindrical member 3 and the second cylindrical member 4 in the radial direction. The housing 2 is made of cast iron. At least surfaces of the first cylindrical member 3 and the second cylindrical member 4 are made of a high anti-corrosion material. At least one of a first axial end face 30 and a second axial end face 40 has an opposed part 401 opposite to the radial step part 23 in the axial direction. A gas sealing structure 61 is arranged between the opposed part 401 and the radial step part 23. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种流量控制阀,其中壳体的气体通道的径向台阶部分附近的部分难以腐蚀,及其制造方法。 解决方案:该流量控制阀1包括壳体2,其中形成有具有第一圆柱形构件容纳部分21的气体通道20,第二圆柱形构件容纳部分22和径向台阶部分23; 容纳在第一圆柱形构件容纳部分21中的第一圆柱形构件3,容纳在第二圆柱形构件容纳部分22中的第二圆柱形构件4和可旋转地布置在第一圆柱形构件3内部的第二圆柱形构件4和第二圆柱形构件4内的阀体5 径向。 外壳2由铸铁制成。 第一圆柱形构件3和第二圆柱形构件4的至少表面由高防腐蚀材料制成。 第一轴向端面30和第二轴向端面40中的至少一个具有与径向台阶部23在轴向方向相反的相对部401。 气体密封结构61布置在相对部分401和径向台阶部分23之间。版权所有(C)2010,JPO&INPIT