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热词
    • 68. 发明授权
    • Compound valve
    • 复合阀
    • US4655095A
    • 1987-04-07
    • US847282
    • 1986-04-02
    • Manuel A. RussoWilliam Richards
    • Manuel A. RussoWilliam Richards
    • G01N30/20G01N1/00
    • G01N30/20Y10T137/86871Y10T137/87161Y10T137/87249
    • The invention resides in a compound valve having utility in a sample injector for a liquid chromatograph. The valve has a pair of rotary spool valves (52, 54), each valve has a shaft (60) with an axial bore (64) in one end and a radial bore (66) communicating with the axial bore. A valve seal (70) surrounds the shaft. A pair of radial passageways (77, 78) in the seal are aligned diametrically and lie in a common plane with the radial bore (66) in the valve shaft. A pinion (62) is fixed to each shaft and a common driving gear (68) engages each pinion to rotate both shafts simultaneously through 180.degree. to place the radial bores in the shafts in communication selectively with either radial passageway in the valve seals.
    • 本发明涉及一种在用于液相色谱仪的样品注射器中具有效用的复合阀。 阀具有一对旋转滑阀(52,54),每个阀具有在一端具有轴向孔(64)的轴(60)和与轴向孔连通的径向孔(66)。 阀密封件(70)围绕轴。 密封件中的一对径向通道(77,78)径向对准并且位于与阀轴中的径向孔(66)的公共平面中。 一个小齿轮62被固定到每个轴上,一个共同的驱动齿轮68啮合每个小齿轮,以同时旋转两个轴180度,以将径向孔选择性地与阀密封件中的任一径向通道连通。