Screen wheel filter device for the high-pressure filtration of a plastic melt

A screen wheel filter device for a high-pressure filtration of a plastic melt, the screen wheel filter device comprising:

• a housing that has an inlet plate having at least one inlet channel and an outlet plate having at least one outlet channel;
• at least one spacer element arranged between the inlet plate and the outlet plate;
• a bearing ring on which a screen wheel is arranged between the inlet plate and the outlet plate, the screen wheel being rotatably mounted;
• a central tensioning bolt, which is guided through the bearing ring, via which the inlet plate together with the outlet plate and the bearing ring inserted therebetween, is braced;
• at least two screen segments arranged on the screen wheel, each of the at least two screen segments being positionable between the inlet and outlet channels and through which a flow passes;
• a through-flow region formed between openings of the inlet channel and the outlet channel facing toward the screen wheel, surfaces projected onto the inlet and outlet plates of all screen segments at least partially overlapping the through-flow region and together form an active pressure surface region;
• and
• a lubricating gap formed between a sealing strip sealing surface of the screen wheel and an inner surface of the inlet plate as well as an inner surface of the outlet plate,
• wherein a cross-sectional area of the bearing ring is at least 9 times a cross-sectional area of the central tensioning bolt, and
• wherein the cross-sectional area the central tensioning bolt being is 0.1 times to 0.4 times an area of the active pressure surface region.