| 摘要 |
<p>The centrifugal spreading disc (1) has at least two standard ejector blades (2A,2B) and an auxiliary blade (3) which is associated with one of the standard blades and is designed for edge spreading. The auxiliary blade is movable or retractable, is shorter than the standard blade with which it is associated and positioned in front of it so that it intercepts the flow of material in front of the standard blade. The auxiliary blade (3) has an upper element (33) which acts as a cover and prevents the material from passing between the auxiliary blade and adjacent standard blade. Variants of the design can have two standard blades, each with an auxiliary blade, two standard blades of different lengths and one auxiliary blade, or a set of detachable auxiliary blades of different lengths, e.g. of 140, 170 and 220 mm, which can be used selectively.</p> |
