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    • 2. 发明申请
    • VALVE SEAT INSTALLATION AND RETRIEVAL TOOL
    • 阀座安装和检索工具
    • WO2011060422A2
    • 2011-05-19
    • PCT/US2010/056846
    • 2010-11-16
    • WEIR SPM, INC.PATEL, Pankaj, H.
    • PATEL, Pankaj, H.
    • F04B53/1087Y10T29/49407Y10T29/53596
    • A tool for replacing a valve seat of a reciprocating pump has a puller shaft connected to a puller head having at least two spring-biased dogs. An operator inserts the puller head into a valve bore and through a valve seat, the dogs retracting as the puller head moves through the valve seat, then snapping back outward. A hydraulic cylinder engages the puller shaft to exert a force on the puller shaft causing the dogs to dislodge the seat. The operator then places a replacement valve seat on a shoulder in the valve bore. The operator attaches an installing head to an installing shaft and inserts the installing head into the valve bore into contact with the replacement valve seat. The hydraulic cylinder applies a force in an opposite direction on the installing shaft to push the replacement valve seat into installed engagement.
    • 用于更换往复泵的阀座的工具具有连接到具有至少两个弹簧偏置卡爪的牵引头的牵引轴。 操作人员将拉头插入阀孔并通过阀座,当牵引头移动通过阀座时,卡爪将收回,然后向外弹回。 液压缸与牵引杆接合以在拉杆轴上施加力,导致狗移开座椅。 然后操作人员将更换的阀座放置在阀孔的肩部上。 操作人员将安装头安装到安装轴上,并将安装头插入阀孔与更换阀座接触。 液压缸在安装轴上以相反的方向施加力,以将替换阀座推入安装接合。