| 摘要 |
PROBLEM TO BE SOLVED: To reduce the change in the performance of a screen device during its operation. SOLUTION: This screen device having a cylindrical screen cylinder 9 and a plurality of vanes 10a rotated along the inner circumferential surface of the screen cylinder 9, further having a raw material entrance chamber 5 adjacent to a paper-making raw material entrance 2, a reject chamber 7 adjacent to a reject exit 3, a screen entrance chamber 6a placed between the a raw material entrance chamber 5 and the reject chamber 7 and adjacent to the entrance side face of the screen cylinder 9, and an accept chamber 8 adjacent to the exit side face 9b of the screen cylinder 9, and used for screening a paper-making raw material A into an accept B and a reject C is characterized in that the cross sectional area of the screen entrance chamber 6a is gradually reduced from the raw material entrance chamber 5 to the reject chamber 7.
|
