| 摘要 |
<p>A device for dispensing a so-called secondary fluid that may be prepared by mixing together at least two so-called primary fluids. The device comprises a body consisting of two portions separated by a flexible sealing wall on one side of which are connected the inlet pipes for respective primary fluids, and an outlet pipe for the secondary fluid, wherein said pipes communicate with one another via a mixing chamber and each pipe has a member controlled by drive means and located on the opposite side of the flexible sealing wall for controlling the flow rate of the fluid in said pipe. The device is characterised in that each control member includes, in addition to the flexible sealing wall (300), an individually movable element (102-103 and 104105) located on one side of said flexible sealing wall (300) and extending perpendicularly to the ends of each of the inlet pipes (203, 204) on the other side of said flexible sealing wall (300), as well as as many individual cams (121, 122) as there are movable elements (102-103 and 104-105). Said cams (121, 122) have a continuously variable engagement surface, and are kinematically connected to drive means (116-117-118) and permanently in contact with the movable elements (102-103 and 104-105) either directly or via intermediate elements (110, 111). Furthermore, said cams are kinematically interconnected so that any movement imparted to one cam (121, 122) by the drive means (116-117-118) is matched by a simultaneous movement of the other cam (122, 121).</p> |
