| 摘要 |
The present invention relates to a scraper device, preferably a bottom scraper arranged at the bottom of a continuous digester for pulp production, which scraper comprises at least one scraper arm (12), preferably arranged with shovel members (13), a shaft (6) and drive device (15) for driving the said scraper arm (12), an axially extending bore (8) inside the said shaft (6) for supplying liquid, and a sealling means (3, 4, 5, 14) for sealing between the atmosphere and the medium in which the said scraper arm (12) is intended to rotate, the said bore (8) extending along only a limited part of the said shaft (6) at that end of the shaft (6) on which the said scraper arm (12) is arranged. |
