Patent ID: 6500306
Filing Date: 2002-12-31
Classification: D21F

Abstract:
An arrangement for handling of white water from a paper machine comprising:a white water outlet for discharging white water from the paper machine; a white water silo for storing the white water discharged from the paper machine; and a white water channel having an inlet end connected to the white water outlet for receiving white water from the paper machine and an opposite outlet end defining a main outlet through which the white water is discharged into the white water silo, the channel having a channel bottom, the channel bottom sloping downward in a flow direction from the inlet end to the outlet end, wherein an additional outlet is provided between the main outlet and the inlet end, the bottom having a first bottom portion that leads away from the inlet end up to the additional outlet and a second bottom portion that leads away from the additional outlet toward the main outlet, the first and second bottom portions being so arranged in relation to each other that each of said bottom portions slopes downward in the flow direction at an angle of inclination that exceeds a critical angle of inclination that avoids sedimentation on the bottom.