| 摘要 |
<p>In a machine of the centrifugal spreader type for spreading granular and powdery material, said machine having a hopper (5) for the material with a bottom (6) with an outlet opening (7), through which the material flows downwards on the rotating spreading disc (13), and in which the flow-through area of the opening (7) can be varied by means of two rotatably adjustable dosing plates (8,9), the framing edges (11,12) respectively of which limit the effective flow-through area in the opening (7), the new feature is that the adjustment mechanism (21-33) for the dosing plates (8,9) is so arranged, that not only is the angular distance (16) between the framing edges (11,12) varied, but also the angular position of the bisecting line (17) between the framing edges. In this manner, a substantially constant distribution pattern is achieved irrespective of the amount of material being spread per unit time.</p> |
