| 摘要 |
<p>The cleaner (26) has a sieve casing (38) to support a sieve having a frame (46) with an adjuster (64) to adjust the lamellae (44). A drive is provided on the frame to operate the adjusters. The sieve can be removed without detaching the connection between the drive and adjuster. The drive moves the adjuster in two directions. The drive can have a gear or worm in engagement with a rack on the adjuster.</p> |
