| 摘要 |
A multiple liquid dispenser (5) comprises a single solenoid valve for controlling the intake of liquid; (n-1) liquid guide devices (11) connected in cascade as the connecting system between the single inlet (7) and the n outlets, the guide devices each having three ways (14, 15, 16) and comprising a float valve (12) which is movable to control flow from the way (16) to each of ways (14, 15), the valves being sequentially actuated by the incoming liquid upon repeated opening and closing of the solenoid valve for fixed periods, a hole (25) of predetermined size for connection to atmosphere being formed in the path of the incoming liquid downstream of the valve seat defined between each inlet way (16) and the associated way (15). During operation each float valve (12) is held in turn against the seats surrounding the ways (15), (14) by suction created by downstream negative pressures. <IMAGE> |
