| 摘要 |
An angular channel (6) is disposed between principally horizontal, upper (2) and lower (7, 71) conveyors, whereas along one side wall (9) of the channel (6) is disposed a guide (14) to which a first rotatable valve element (10) is slidably mounted. At the outlet of the channel (6), at the other, opposite side wall (19), is stationary mounted together with a pneumatic actuator (22), a second rotatable valve element (20) which chronologically works together with the first element (10), whereas the first element (10) is attached to the guide (14) by means of a slider (13). The first valve element (10) has three operating positions, whereas in the first position it is set principally horizontally at the inlet of the channel (6), and in the second position it is set slantwise, preferably at an angle of 45°, at the outlet of the channel (6), and in the third position it is set principally horizontally next to the channel (6). The second valve element (20) has two operating positions, whereas in the first position it is set slantwise, preferably at an angle of 45°, at the outlet of the channel (6), and in the second position it is set principally horizontally next to the channel (6). The first element (10) in the second operating position is pushed with its end close to the end of the second element (20) set in the first position. A reciprocating motion of the slider (13) is provided by a motor (17) connected with the slider (13) by means of a pull rod (18). The valve elements (10, 20) have the form of a solid having one, circularly concave or flat, working surface (11, 21). |
