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    • 9. 发明授权
    • Diaphragm pump
    • 隔膜泵
    • US4867653A
    • 1989-09-19
    • US146472
    • 1988-01-20
    • John B. MillsVicky J. PetersonRoger W. YoungC. Jeremy CrouchRoman A. SchulzIrving F. SnyderLarry J. DeHemmer
    • John B. MillsVicky J. PetersonRoger W. YoungC. Jeremy CrouchRoman A. SchulzIrving F. SnyderLarry J. DeHemmer
    • F01L25/06F04B43/073
    • F01L25/063F04B43/0736
    • A double-diaphragm pump is designed to be molded almost entirely out of plastic and is provided with totally externally-accessible and serviceable check valves which do not require any significant disassembly of the pump itself. The pump is also fitted with a diaphragm which is formed from a uniform thickness of material and which have convolutions which are equally disposed on either side of the angle of elevation of the unstressed diaphragm. The pump is designed for mounting on top of a barrel or drum and has a set of radiused feet so as to fit snugly against the rim in an inlet pipe which fits into a bung plug having an eccentric opening such that the opening grips the inlet pipe and the plug may be rotated so as to snugly position the pump against the rim of the drum. The air valve to the pump is provided with U-cup seals in the housing. The spool of the pump moves in such a fashion so that the transitional area between the open and closed positions contacts the open end of the U-cup rather than the closed end as is traditional.
    • 双隔膜泵设计成几乎完全由塑料模制,并配有完全可外接的和可维修的止回阀,不需要对泵本身进行任何明显的拆卸。 泵还装有隔膜,其由均匀厚度的材料形成,并且具有均匀地设置在不受应力隔膜的仰角的任一侧上的卷积。 泵设计用于安装在桶或桶的顶部上,并且具有一组圆弧形的脚,以便在入口管中紧密地贴靠在轮辋上,入口管适合于具有偏心开口的栓塞,使得开口夹住入口管 并且塞子可以旋转以便将泵紧贴在滚筒的边缘上。 泵的空气阀在壳体中设有U形杯密封。 泵的阀芯以这样的方式移动,使得打开和关闭位置之间的过渡区域接触U形杯的开口端而不是传统的封闭端。