| 摘要 |
A doctor device for removing a web of material from a filter drum in a filter for dewatering liquid-containing stock mixtures. The device comprises a hollow doctor holder on which a doctor blade is mounted. In order to prevent deformations of the doctor device owing to heat stresses, fluid such as liquid or gas of substantically constant temperature is supplied to the cavity of the hollow doctor holder. The fluid is sprayed therefrom through nozzles against the drum for cleaning same. |
