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    • 4. 发明授权
    • Ball check valve
    • 球止回阀
    • US4197875A
    • 1980-04-15
    • US906582
    • 1978-05-16
    • Robert J. SchiefersteinEnrique L. Kilayko
    • Robert J. SchiefersteinEnrique L. Kilayko
    • F16K15/04
    • F16K15/04E05Y2201/20E05Y2201/234E05Y2201/458Y10T137/791Y10T137/7927
    • A ball check valve is described having a fluid port, a ball moveable toward and away from the port, a seating surface surrounding the port and an elastomeric sealing element. The seating surface has a conical annular surface extending radially outwardly away from the ball and an annular ridge between the port and the conical surface. The sealing element has an outer sealing surface for contacting the conical seating surface and an annular groove for receiving the seating surface ridge. On its ball side, it has an annular outer surface and an inner sealing surface for contacting the ball. A sealing element retainer contacts the outer portion of the elastomeric sealing element outer surface on its ball side to hold it in position.
    • 描述了一种球止回阀,其具有流体端口,可朝向和远离端口移动的球,围绕端口的就座表面和弹性密封元件。 座面具有径向向外延伸远离球的圆锥形环形表面和端口与锥形表面之间的环形脊。 密封元件具有用于接触锥形座表面的外部密封表面和用于接纳座面脊的环形槽。 在其球侧,其具有用于接触球的环形外表面和内密封表面。 密封元件保持器接触其球侧上的弹性密封元件外表面的外部部分以将其保持在适当位置。
    • 7. 发明授权
    • Ball check valve
    • 球止回阀
    • US4781213A
    • 1988-11-01
    • US120853
    • 1987-11-16
    • Enrique L. Kilayko
    • Enrique L. Kilayko
    • F16K1/46F16K15/04F16K25/00
    • F16K1/465F16K15/04Y10T137/7867Y10T137/7868Y10T137/7912
    • A ball check valve assembly for chemical pumps. A fluid conduit terminates at a first surface in a port of circular cross section. Within the conduit, an O ring seat is aligned with the port; an elastomeric O ring is positioned in the seat. Spacer means, radially outward of the O ring seat, extends generally away from the port and has a dimension adjacent the O ring seat greater than the cross sectional diameter of the O ring when unstressed. O ring capture means spaced from the O ring seat limits travel of the O ring away from the port, and provides a central aperture for the valve ball, which has a diameter greater than that of the port. The O ring has an ID less than the diameter of the ball and an OD greater than the diameter of the aperture; the spacer means ID is at least about 1/2% greater than the OD of the O ring. During closing travel of the ball, the O ring is free to move transverse to the direction of such travel responsive to the ball, for impact on the O ring distributed relatively equally over the contacted surface.
    • 用于化学泵的球止回阀组件。 流体导管终止于圆形横截面的端口处的第一表面。 在导管内,O形环座与端口对齐; 弹性体O形环位于座椅中。 O形环座的径向外侧的间隔件大体上远离端口延伸,并且在不受应力时,邻近O形环座的尺寸大于O形环的横截面直径。 与O形环座隔开的O形圈捕获装置限制了O型环远离端口的行程,并为阀球提供了直径大于端口直径的中心孔。 O形圈的ID小于球的直径,并且OD大于孔的直径; 间隔装置ID比O形环的OD值至少大约1/2%。 在关闭球的行程期间,响应于球,O形环自由地横向于这种行进的方向移动,以便相对均匀地分布在接触表面上的O型环的冲击。