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    • 8. 发明公开
    • LIQUID DISPENSING APPARATUS
    • FLÜSSIGKEITSABGABEVORRICHTUNG
    • EP0719235A4
    • 1996-02-27
    • EP92923605
    • 1992-11-20
    • LANGOULANT JENNIFER MAELANGOULANT BRUCE LEBER
    • GUTTERIDGE LANCELOT PHILLIPGUTTERIDGE DOROTHY MAE
    • B67D1/12B67D1/00B67D7/10B67D7/12B67D7/30G01F11/12B67D5/30
    • B67D7/103B67D1/0007B67D1/0054B67D1/1231B67D7/12B67D7/302G01F11/125
    • A dispensing apparatus (10) for dispensing metered quantities of a liquid. The apparatus comprises a peristaltic pump (11) having a pump inlet (13) adapted for connection to a liquid supply (17) and a pump outlet (15). Flow from the pump outlet (15) is controlled by a control valve (45) having a valve intake (47) for receiving liquid from the pump outlet and two valve outlets one being a return outlet (48) communicating with the pump inlet and the other being a discharge outlet (49) communicating with a dispensing handpiece (21). The control valve (45) has two modes of operation, one being a recirculating mode in which liquid entering the intake is directed to the return outlet and the other being a discharge mode in which liquid entering the valve intake is directed to the discharge outlet. A control means including a key pad (25) on the dispensing handpiece (21) is provided for controlling operation of the control valve in the two modes and for controlling operation of the pump.
    • 一种用于分配计量数量的液体的分配装置(10)。 该设备包括蠕动泵(11),该蠕动泵具有适于连接到液体供应(17)和泵出口(15)的泵入口(13)。 来自泵出口(15)的流动由具有用于接收来自泵出口的液体的阀入口(47)的控制阀(45)和作为与泵入口连通的返回出口(48)的两个阀出口(48) 另一个是与分配手持件(21)连通的排出口(49)。 控制阀45具有两种操作模式,一种是再循环模式,其中进入进口的液体指向返回出口,另一种是进入阀进口的液体指向排出口的排出模式。 在分配手持件(21)上设置有包括键盘(25)的控制装置,用于控制两种模式下控制阀的操作并控制泵的操作。