Patent ID: 6919024
Filing Date: 2005-07-19
Classification: B01D

Abstract:
1. A press membrane ( 9 ) made of a rubber-elastic material in combination with a filter plate ( 1 ′), an adjacent plate ( 1 ) and a filter cloth of a filter press, with the press membrane ( 9 ) being supportable on one side thereof by the filter plate ( 1 ′) and extending along and supporting on an other side thereof the filter cloth ( 14 ) by means of a plurality of knob-shaped elevations provided on the press membrane, and with an intermediate space ( 11 ) disposed between the press membrane ( 9 ) and the filter plate ( 1 ′) being pressurizable with a pressure medium, as a result of which the press membrane ( 9 ) can be displaced in an elastic manner away from the filter plate ( 1 ′) and in a direction toward a filter chamber ( 7 ) which is delimited between the filter cloth ( 14 ) and the adjacent plate ( 1 ) in order to exert a pressing force on a filter cake building up in front of the filter cloth ( 14 ), and with pressure forces being transmittable between the filter plate ( 1 ′) and the adjacent plate ( 1 ) by the press membrane ( 9 ) clamped therebetween in an area of supporting cams ( 6 ) provided on the filter plate ( 1 ′) and protruding perpendicular to the filter plate and to the press membrane ( 9 ) toward the adjacent plate ( 1 ), with the press membrane ( 9 ) being provided with imperforate transmission disks ( 12 ) in the area of the supporting cams ( 6 ), with said transmission disks ( 12 ) consisting of a substantially harder material than a rubber-elastic material of a remaining portion of the press membrane ( 9 ) and being vulcanized into the rubber-elastic material, characterized in that the transmission disks ( 12 ) form with their opposite face sides a part of surfaces of the press membrane ( 9 ) and that the surfaces of the press membrane ( 9 ) extend in a continuous planar manner in a transition region from the transmission disks ( 12 ) to the remaining portion of the press membrane ( 9 ).