| 摘要 |
<p>A groove extending around the inside of the tubular part (13) cooperates with a wall section (10) of the plate (9), and enables some material to leak before being collected and returned to the tubular part. A seal arrangement (8) is provided between an essentially fixed part and a tubular part rotatable around it, the fixed part comprising a plate located inside the tubular part in order to seal it. The tubular part has at least one groove extending all the way around its inner periphery, inside which is at least one partition wall (17) extending in a radial direction. The plate has a wall section extending away from it in an axial direction, this wall being located opposite at least part of the groove. A nozzle (11) is located next to the top part of the wall section during operation, one end of the nozzle being located opposite the groove and the other end exiting the opposite side of the plate to the wall section.</p> |
