| 摘要 |
PCT No. PCT/FI94/00250 Sec. 371 Date Mar. 6, 1996 Sec. 102(e) Date Mar. 6, 1996 PCT Filed Jun. 10, 1994 PCT Pub. No. WO94/29519 PCT Pub. Date Dec. 22, 1994An apparatus in a paper or board machine for dewatering a web carried along a first wire section and prior to introduction of the web to a press section of the paper or board machine. The apparatus comprises a first pair of water removing rolls for receiving the web and the first wire section which include a non-suction water receiving roll which is mounted on a first side of the web and has an open surface for receiving and temporarily holding water removed from the web, and a non-suction smooth surfaced roll mounted on the second side of the web. A second permeable wire section is brought in contact with a side of the web opposite that of the first wire section while passing through the pair of rolls. The first and second wire sections produce a press nip when they pass through the pair of water removing rolls with the web to remove water from the web, the water being removed to openings in the open surface of the non-suction water receiving roll. A water receptacle is positioned just downstream of the pair of water removing rolls on the same side of the web as the non-suction water receiving roll for collecting water as water is thrown from the non-suction water receiving roll by centrifugal force produced from rotation. A transfer device for transferring the web traveling on and supported by the first wire section as a closed draw to the press section. |
