B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
182/46
B01D 33/21 (2006.01) D21C 9/18 (2006.01)
Patent
CA 1098046
ABSTRACT OF THE DISCLOSURE The invention provides a method for filtering a fibrous material by means of a disc filter, as well as a disc filter for performing the method. The disc filter consists of a compartment axle provided with compartments placed substan- tially longitudinally on the axle, of discs mounted on the compartment axle and provided with filtering surfaces, the chan- nels of said discs being connected to corresponding axle channels, of distributor valves which connect the axle compart- ments alternatingly to vacuum and to atmospheric pressure and possibly also to a pressure higher than the atmospheric pressure while the axle is rotating and is characterized in that the so-called suction zone, subject to vacuum and connected by the distributor valve to the axle compartments, is divided into two parts, the division point between them, the first zone, intended for the separation of the so-called muddy filtrate, and the second zone, intended for the separation of the so- called clear filtrate, being selected so that in the zone for the separation of the clear filtrate, the suctions begins, i.e., the axle compartment becomes subject to suction, when the axle compartment is, in the direction of rotation of the axle, between the bottom position and the position 60° after the bottom position.
285844
Mcfadden Fincham
Oy Rauma-Repola
LandOfFree
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