Filtering device for highly viscous media

A filtering device for viscous media, the filtering device comprising:

• a housing that has a front housing element with at least one inflow channel and has a rear housing element with at least one outflow channel;
• a screen wheel mounted rotatably between the front and rear housing elements and has a number n of screen cavities, which are each to be provided with at least one screen insert element and, for sealing with respect to the front and rear housing elements, are each surrounded by at least one sealing web;
• a filtering region covered by the housing and has a flow connection with the at least one inflow channel and the at least one outflow channel and in which at least one screen cavity is flowed through;
• a maintenance region in which at least one screen cavity is exposed outside the housing and/or is accessible from a housing outer side;
• and
• two blocking regions in the housing that are each formed between the filtering region and the maintenance region and in which, in each case, at least one screen cavity together with the at least one sealing web is covered completely by the front and rear housing elements and has no flow connection with the at least one inflow channel and the at least one outflow channel,
• wherein, on the screen wheel, multiple screen cavities situated one next to the other are combined to form at least one filter group, which, in the case of at least partial overlapping with the filtering region of the housing, are flowed through in a joint manner,
• wherein an area on the screen wheel which is covered by the filtering region of the housing is larger than a single one of the screen cavities,
• wherein, next to each side of the at least one filter group, provided the screen wheel has at least one closed blocking segment which, when the screen wheel is rotated so that the at least one closed blocking segment of the screen wheel is positioned in the blocking regions of the housing, the at least one closed blocking segment is sealed off with respect to the front and rear housing elements on both sides of the screen wheel, and
• wherein the blocking regions in the housing are each larger than or equal in size to a single one of the screen cavities together with the at least one sealing web.