| 摘要 |
<p>A three-way antimix valve (1) for a pourable food product packaging machine, the valve having a casing (2) in turn having a lateral wall (4) which defines a cavity (6) having an axis of symmetry (A) and communicating with a bottom drain opening (7), and has three gates (10, 11, 12) spaced 90 DEG apart; and a rotary shutter (3) housed inside the cavity (6), rotating about the axis (A), and having a lateral surface (20) in which are formed two openings (22, 23) spaced 90 DEG apart and communicating with each other via an inner passage (24) for connecting respective pairs (10,12; 11,12) of gates in two respective work positions (a, b) of the shutter (3); the casing (2) has two recesses (17, 18) spaced 90 DEG apart and each located in an intermediate position between a respective pair (10,12; 11,12) of gates; and the shutter (3) has four recesses (25, 26, 27, 28) spaced 90 DEG apart, and one (25) of which is located between the two openings (22, 23) to connect the passage (24) and the three gates (10, 11, 12) to the drain opening (7) in an intermediate position (c) of the shutter (3). <IMAGE></p> |
