Wet paper web roller press - includes press roller and counter roller with pressure gap between them for web to pass through

摘要

The press roller assembly, esp. to extract water from a paper pulp web, has a press roller (10) and a counter roller (11), with a pressure gap between them for the web (9) to pass through. At least one roller acts as a shoe roller, where the dimensions and material of the roller mantle (12) and the yoke (13) through the mantle are structured so that the bending actions are equal through a plane (S) at right angles through the press plane (E), through the inherent weight of the roller mantel and the yoke, including the shoe (15). The material for the roller mantel (12) pref. has a lower elasticity module than the material for the yoke (13). The yoke (13) is a hollow body, and at least mostly in a tubular shape. The ring zone (18) between the yoke (13) and the roller mantle (12) can be filled with a fluid, and the interior of the hollow yoke (13) can be filled with a fluid. The yoke (13) has at least one additional wt. (17), pref. on the centre plane (S) of the yoke at right angles to the press plane (E). The yoke (13) has at least one weak point (14), to reduce the wt., pref. on the centre plane (S) of the yoke at right angles to the press plane. USE/ADVANTAGE - The press roller assembly is at a papermaking machine, to extract water from the wet web material. Should the press plane not be vertical, there is no danger of a fault in the fit between the outer surface of the shoe and the inner surface of the roller mantle, through gravity.