B - Operations – Transporting – 07 – B
Patent
B - Operations, Transporting
07
B
B07B 1/49 (2006.01) B01D 35/30 (2006.01) D21D 5/16 (2006.01)
Patent
CA 2278815
A screen basket for filtering an aqueous fiber suspension includes a cylindrical foramenous filter element, anchoring collars surrounding and fixed to opposite ends of the filter element, at least two support rings surrounding the filter element, and support rods for adjusting the support rings between axially contracted positions disengaged from the anchoring collars, and axially expanded positions engaging the anchoring collars and axially tensioning the filter element. In a first embodiment, the anchoring collars are relatively flexible. This allows the anchoring collars to be deformed for insertion of the cylindrical foramenous filter element within the support rings. Alternatively, the upper and lower support rings are divided into segments that are easily disassembled and reassembled to facilitate removal of a defective cylindrical foramenous filter element and installation of a new filter element. Advantageously, the screen basket includes a reusable rigid frame that cooperates with a replaceable and disposable cylindrical foramenous filter element.
Doelle Klaus
Lorenz Kurt W.
Fetherstonhaugh & Co.
Voith Sulzer Paper Technology North America Inc.
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