Arrangement for the treatment of cellulose pulp
View Patent ↗A washing arrangement for washing and dewatering cellulose pulp is disclosed, comprising at least one rotary cylindrical element, against which the pulp is dewatered, and where a seal is located in an end seal holder, so that the seal has a contact surface against the rotary cylindrical element and an application surface placed against an applicator located in a groove in the end seal holder, where the seal has a longitudinal extension, which corresponds to either the entire or at least a greater part of the circumference of the cylindrical element, and is intended to seal against the end of the cylindrical element, and where the seal is a polymer ledge provided with an arming element.
1. A washer for washing and dewatering cellulosic pulp material comprising a rotary cylinder against which said cellulosic pulp material is dewatered, a seal having a width defining a first surface and a second surface, and a length corresponding to a substantial portion of the circumference of said rotary cylinder, said seal mounted with respect to said rotary cylinder whereby said first surface contacts said rotary cylinder, an end seal holder for holding said second surface of said seal, said end seal holder including a groove for said seal, an applicator disposed within said groove in contact with said second surface of said seal, said seal comprising a polymer ledge, an arming element comprising a steel band disposed within said polymer ledge, and a plurality of joints disposed along said length of said seal for attaching said arming element to said polymer ledge.
2. The washer of claim 1 wherein said seal includes a first end and a second end defining said length of said seal, said first end being fixed in said circumferential direction and said second end being movable in said circumferential direction.
3. The washer of claim 2 wherein said length of said seal is less than said circumference of said rotary cylinder.
4. The washer of claim 1 wherein said plurality of joints are selected from the group consisting of pins and screws.
5. The washer of claim 1 wherein said arming element has a first width and said seal has a second width, said first width comprising only a portion of said second width.
6. The washer of claim 5 wherein said first width comprises about one-half of said second width.
7. The washer of claim 1 wherein said arming element has a first end and a second end defining a first width, said first end corresponding to said second surface of said seal.
8. The washer of claim 1 wherein said arming element has a first end and a second end defining a first width, said first end being displaced from said second surface of said seal.
9. The washer of claim 1 wherein said polymer ledge has a predetermined thickness, and said arming element is disposed within said polymer ledge at a location corresponding to about one-half of said predetermined thickness.