| 摘要 |
<p>Compact extruder with multiple parallel screws, comprising an outer casing (12) which comprises at least two chambers (13, 14); the said chambers contain at least two screws (15, 16, 17, 18, 19) which allow material to flow from one chamber (13) to the other (14) through a passage (20), and present a feed inlet (21) for the material to be treated by the extruder and an outlet (22) for the said material; each chamber (13,14) is constituted by at least one pair of housings (23, 24, 25, 26, 27) for the corresponding pair of screws (15, 16, 17, 18, 19) which engage with one another, each screw presenting a long-pitch portion (A) and a shorter-pitch portion (B, B1, B2). <IMAGE></p> |
