| 摘要 |
<p>A hydraulic valve includes a lower body (6), fastened to a carrousel platform (2) and provided with a diaphragm (25) featuring a channel (26) which faces said platform (2). The channel (26) extends to include bores (3,4,5) made in the platform (2) and communicating with a liquid supplying chamber, liquid delivery means, and pump means, respectively. The lower body (6) carries a rotating upper body (7), which can be rotated to take a liquid suction position and a liquid delivery position. The lower body (6) supports a pair of vertically sliding plungers (23,24) located in the region of the bores (3,4) and over the diaphragm (25) so as to act thereon. The plungers are operated alternately between a raised position, in which the bores (3,4) are opened and a lowered position, in which the bores are closed, when the upper body (7) is in the suction and distribution positions respectively. <IMAGE></p> |
