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    Valve arrangement for an air-operated diaphragm pump
    1.
    发明授权
    Valve arrangement for an air-operated diaphragm pump 失效
    气动隔膜泵的阀门装置

    公开(公告)号：US4494574A

    公开(公告)日：1985-01-22

    申请号：US564944

    申请日：1983-12-23

    申请人： Joseph C. Casilli ,  Lawrence Gibson ,  William D. Hessler

    发明人： Joseph C. Casilli ,  Lawrence Gibson ,  William D. Hessler

    IPC分类号： F04B43/06 ,  F04B43/067 ,  F04B43/073 ,  F16K1/00

    CPC分类号： F04B43/0736 ,  Y10T137/86582

    摘要： A diaphragm pump pumping arrangement includes two diaphragm pumps which are arranged and operate in tandem. Each of the diaphragm pumps includes a housing and a movable wall that includes a flexible diaphragm and subdivides the interior of the respective pump housing into a pumping chamber and an actuating chamber. An air distributing control arrangement interposed between and connected to the pump housings includes a spool valve movable in a bore of an aluminum casing of the control arrangement between two end positions in which it alternatingly achieves the admission of the compressed air into one, and discharge of the air from the other, actuating chamber. The spool valve is displaced due to the action of respective switching valves accommodated in individual bores of the control arrangement and displaced by the respective movable walls from their rest positions in which they admit the ambient pressure to the associated end faces to their active positions in which they admit the compressed air to the associated end faces of the spool valve. Each switching valve has an actuating portion that passes through a central passage of an annular element stationarily mounted in the respective bore, with a greater clearance at first, and with a lesser clearance later. A substantially radial passage in the annular element opens onto the zone of the central passage upstream of the lesser clearance, so that compressed air propagates into the radial passage unless prevented from doing so by a seal in a first position of the switching valve, and the lesser clearance provides a throttling action at all times, assuring pressure relief in the radial passage when the seal is in effect.

    摘要翻译： 隔膜泵泵送装置包括两个隔离泵，它们排列并串联运行。 每个隔膜泵包括壳体和可移动壁，其包括柔性隔膜并将相应泵壳体的内部细分成泵送室和致动室。 设置在泵壳体之间并连接到泵壳体上的空气分配控制装置包括可在控制装置的铝壳体的孔中在两个端部位置之间移动的滑阀，其中交替地使压缩空气进入一个， 来自另一个的空气，致动室。 滑阀由于容纳在控制装置的各个孔中的各个切换阀的作用而移位，并且被相应的可移动壁从它们的静止位置移位，在这些位置中，它们将环境压力接纳到相关联的端面到其活动位置， 他们承认压缩空气到滑阀的相关端面。 每个切换阀具有致动部分，该致动部分通过固定地安装在相应的孔中的环形元件的中心通道，其间隔更大的间隙，并且随后具有较小的间隙。 环形元件中的基本上径向的通道在较小间隙的上游通向中央通道的区域，使得压缩空气传播到径向通道中，除非通过切换阀的第一位置中的密封件来防止这样做， 较小的间隙始终提供节流作用，当密封有效时，确保径向通道中的压力释放。

    Self-draining pump arrangement
    2.
    发明授权
    Self-draining pump arrangement 失效
    自排水泵布置

    公开(公告)号：US4661041A

    公开(公告)日：1987-04-28

    申请号：US795396

    申请日：1985-11-05

    申请人： William D. Hessler

    发明人： William D. Hessler

    IPC分类号： F04D29/42 ,  F04D5/00

    CPC分类号： F04D29/4273

    摘要： A self-draining pump comprises a pump housing which bounds an impeller chamber having a central axis that is substantially horizontal in a position of use of the pump and an open end facing in one axial direction. An output passage of the pump housing communicates with a radially outward region of the impeller chamber. An impeller is received in the impeller chamber for rotation about the central axis for impelling fluid from a radially inward region toward the radially outward region of the impeller chamber. A lid includes a mounting portion mounted on the pump housing for closing the open end of the impeller chamber, an inlet portion axially spaced from the mounting portion and bounding an inlet passage which is centered on an inlet axis that is substantially parallel to the axis and offset therefrom by such a distance that a bottom zone of the inlet passage is at an elevation no higher than a bottom zone of the impeller chamber in the position of use, a connecting portion bounding an internal space connecting the inlet passage with a radial section of the impeller chamber which extends from the radially inward region to the bottom zone of the impeller chamber, and a partitioning wall situated in the internal space for delimiting therein a connecting passage leading from the inlet passage to the radially inward region of the impeller chamber, the partitioning wall including at least one aperture of a limited cross section which communicates the bottom zone of the impeller chamber with the bottom zone of the inlet passage for draining fluid from the bottom zone of the impeller chamber when the inlet passage is connected to a drain.

    摘要翻译： 自排水泵包括泵壳体，该泵壳体具有在泵的使用位置处具有基本上水平的中心轴线的叶轮室和面向一个轴向方向的开口端。 泵壳的输出通道与叶轮室的径向向外的区域连通。 叶轮容纳在叶轮室中，用于围绕中心轴线旋转，以将流体从径向向内的区域推向叶轮室的径向向外区域。 盖子包括安装在泵壳体上用于封闭叶轮室的开口端的安装部分，与安装部分轴向间隔开的并限定入口通道的入口部分，入口通道以基本​​上平行于轴线的入口轴线为中心， 偏离这样的距离，使得入口通道的底部区域处于不高于使用位置的叶轮室的底部区域的高度;连接部分，其将连接入口通道的内部空间与径向部分 叶轮室从叶轮室的径向向内的区域延伸到底部区域;以及分隔壁，其位于内部空间中，用于在其中界定从入口通道引导到叶轮室的径向向内区域的连接通道， 分隔壁包括至少一个有限横截面的孔，其连通叶轮室的底部区域 入口通道的底部区域，用于当入口通道连接到排水管时从叶轮室的底部区域排出流体。