Rotary filter and associated filtering method

A rotary filter for liquid/solid separation of a suspension, comprising a trough configured for containing the suspension, a device configured for spraying disengagement fluid, and at least one disk which is non-rotatably connected to a main shaft, the at least one disk being configured for being partially immersed in the suspension and the at least one disk comprising a plurality of filter sectors, each filter sector of the plurality of filter sectors comprising a structural element covered by a filter medium, and a duct connecting each filter sector to pipes arranged along the main shaft, characterized in that:

• the plurality of filter sectors comprises a first series having at least one filter sector which is separated from a second series having at least one filter sector, wherein the first series is separated from the second series by two non-filtering zones,
• the main shaft comprises a first pipe which communicates with the first series, and a second pipe which communicates with the second series,
• said rotary filter comprises comb teeth which are configured for being arranged above a level of the suspension, on either side of the at least one disk,
• the main shaft occupies at least:
• a first angular position in which the first series is located under the comb teeth, for soaking in the suspension to be filtered, and in which the second series is located above the comb teeth, each non-filtering zone having faces and being adjacent to one comb tooth on each of the faces thereof,
• a second angular position in which the second series is located under the comb teeth, for soaking in the suspension to be filtered, and in which the first series is located above the comb teeth, each non-filtering zone having faces and being adjacent to one comb tooth on each of the faces thereof,
• so as to allow for the disengagement of the first series or the second series located above the comb teeth while continuing filtration of the suspension on the other second series or first series, respectively, located below the comb teeth.