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    • 7. 发明授权
    • Dosing pump for liquid dispensers
    • 液体分配器剂量泵
    • US06540117B2
    • 2003-04-01
    • US09821835
    • 2001-03-30
    • David J. Powling
    • David J. Powling
    • B67D8854
    • B05B11/3015A47K5/1204B05B11/3011B05B11/3067B05B11/3094B05B11/3097B05B11/3098
    • A dispenser for dispensing metered amounts of a viscous liquid includes a liquid reservoir and a pump chamber having an opening in communication with the reservoir. A dispensing orifice is defined in the pump chamber. A pump mechanism is configured with the pump chamber and is movable from a rest position to a pressurizing position upon actuation thereof to pressurize liquid within the pump chamber. A check valve mechanism is disposed in the opening. A sealing member is disposed within the pump chamber to seal the dispensing orifice upon an initial movement of the pump mechanism to its pressurizing position. The sealing member is moveable within the pump chamber upon subsequent further movement of the pump mechanism to its pressurizing position to unseal the dispensing orifice. Upon initial return movement of the pump mechanism to its rest position, the sealing member remains unsealed relative to the dispensing orifice as a partial vacuum is drawn in the pump chamber and then moves to seal the dispensing orifice upon further subsequent movement of the pump mechanism to its rest position.
    • 用于分配计量的粘性液体的分配器包括液体储存器和具有与储存器连通的开口的泵室。 在泵室中限定分配孔。 泵机构配置有泵室,并且在泵机构致动时可以从静止位置移动到加压位置以对泵室内的液体加压。 止回阀机构设置在开口中。 密封构件设置在泵室内以在泵机构初始移动到其加压位置时密封分配孔。 随后泵机构进一步移动到其加压位置以密封分配孔口之后,密封构件可在泵室内移动。 当泵机构初始返回到其静止位置时,当部分真空抽吸在泵室中时,密封构件相对于分配孔保持未密封,然后在将泵机构进一步移动到泵机构时移动以密封分配孔 其休息状态。