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    • 17. 发明授权
    • Proportional control solenoid relief valve
    • 比例控制电磁阀安全阀
    • US5938170A
    • 1999-08-17
    • US827964
    • 1997-04-07
    • Yoshiyuki ShimadaTetsuya Yoshino
    • Yoshiyuki ShimadaTetsuya Yoshino
    • F16K47/02F16K17/04F16K17/06F16K17/10F16K31/06F16K31/40F16K31/02
    • F16K31/406F16K17/10F16K17/105Y10S251/903
    • A pilot-operated proportional control electromagnetic relief valve has a needle guide portion snugly fitted around the outer surface of a needle. The needle guide portion guides vertical movement of the needle, and is located at the center of a stopper so as to be coaxial with the stopper. A cylindrical inner wall portion of the stopper is so bored in the lower part of the adapter as to be coaxial with the needle guide portion. A cylindrical outer wall portion to be snugly fitted in the cylindrical inner positioning wall portion is so formed around the outer surface of a seat as to be coaxial with the seat portion. The outer circumferential surface of the needle is snugly fitted in the needle guide portion of the adapter so that the needle guide portion guides the axial travel of the needle, and the cylindrical inner wall portion of the adapter and the cylindrical outer wall portion of the seat are snugly fitted together. The needle can therefore be properly seated without the danger of the needle being in off-center contact with the seat portion.
    • 先导式比例控制电磁释放阀具有紧密地装配在针的外表面上的针引导部。 针引导部引导针的垂直运动,并且位于止动件的中心,以与止动件同轴。 止动件的圆柱形内壁部分在接头的下部如此钻孔,以与针引导部分同轴。 围绕圆筒形内定位壁部分紧密配合的圆柱形外壁部分围绕座椅的外表面形成为与座部分同轴。 针的外周表面紧贴在适配器的针引导部分中,使得针引导向件引导针的轴向移动,并且适配器的圆柱形内壁部分和座的圆柱形外壁部分 紧贴在一起。 因此,针可以正确地就位,而不会使针与座部脱离接触的危险。