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    • 4. 发明公开
    • PUMP APPARATUS
    • PUMP VORRICHTUNG
    • EP2911802A1
    • 2015-09-02
    • EP13756661.8
    • 2013-07-31
    • Tristel PLC
    • TURNER, Jeremy
    • B05B11/00F04B43/12
    • F04B53/06A61M5/14228A61M5/14232A61M2205/586B05B9/0872B05B11/30B05B11/303B05B15/62F04B23/02F04B43/12F04B53/1075F16K15/142F16K15/145Y10T137/7889
    • A pump apparatus (1) comprises a pump head (2) and a container (20) for a liquid to be dispensed. The pump head (2) has a flexible dispensing tube (4) in fluid connection with the inside of the container (20). The fluid connection between the dispensing tube (4) and the inside of the container (20) is provided by a supply tube (28) which co-operates with the dispensing tube (4) to provide a non-return valve function. An end (48) of the supply tube (28) is disposed within an end of the dispensing tube (4) and the non-return valve function is provided by a hole (46) through a side wall of the supply tube (28) in a region where the dispensing tube (4) overlaps the supply tube, whereby the dispensing tube (4) provides a seal over the hole (46) to prevent ingress of fluid when the internal pressure is lower than the external pressure. Another aspect of the invention provides a container (20) for use in the pump apparatus.
    • 泵装置(1)包括用于待分配液体的泵头(2)和容器(20)。 泵头(2)具有与容器(20)的内部流体连接的柔性分配管(4)。 分配管(4)和容器(20)内部之间的流体连接由与分配管(4)配合以提供止回阀功能的供应管(28)提供。 供给管(28)的端部(48)设置在分配管(4)的端部内,并且止回阀功能由穿过供给管(28)的侧壁的孔(46)提供, 在分配管(4)与供应管重叠的区域中,由此分配管(4)在孔(46)上提供密封,以防止内部压力低于外部压力时的流体进入。 本发明的另一方面提供一种用于泵装置的容器(20)。