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US 2008/0173415 A1Published application
Screen plates having diagonal slots with curved inlets for a digester
AssigneeAndritz Inc.
InventorsJay K. Sheerer, Carl Luhrmann
Life of this patent
Estimating the term…
Abstract
A screen plate for a cellulosic material puling vessel, the screen plate including: slots having curved inlet corner edges adjacent an inside surface of the screen plate and facing a pulp flow.
Claims25
A screen plate for a cellulosic material puling vessel, the screen plate comprising:
- slots extending through the plates and having curved inlet corner edges adjacent an inside surface of the screen plate and facing a pulp flow when installed in the pulping vessel.
A screen plate assembly for a continuous digester vessel for pulping cellulosic material, the assembly comprising:
- a plurality of screen plates for a cellulosic material puling vessel, each plate having a arc shape in cross-section, and said screen plates being assembled to form an annulus attached to an inside surface of the digester vessel, and
- each screen plate including slots having curved inlet corner edges adjacent an inside surface of the screen plate and facing a pulp flow.
Dependencies are inferred from the claim text.