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US 5,510,005 AGranted
Venturi headbox for a papermaking machine
AssigneeWestvaco Corporation
InventorBrian D. Gingerich
Life of this patent
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Abstract
This invention relates to headboxes which are used in papermaking machines. The inventive structure employs the use of a plurality of venturis located between the headbox chamber and the slice. Each venturi is located adjacent to a pulp conduit spaced transversely across the headbox chamber.
Claims5
A venturi headbox for a papermaking machine, wherein said headbox is structured for having a pulp flowing from an upstream to a downstream direction and is comprised of:
- a headbox chamber;
- a pulp inlet means located upstream of said headbox chamber for delivering pulp to said headbox;
- a white water inlet means located adjacent to said pulp inlet means for delivering white water to said headbox chamber;
- a venturi manifold means having a plurality of venturis located downstream of and spaced transversely across said headbox chamber;
- a slice means located downstream of said venturi manifold means;
- wherein said pulp inlet means is further comprised of:
- a pulp flow regulating means located upstream of said headbox chamber;
- a pulp header means located upstream of said pulp flow regulating means and said headbox chamber;
- and
- a pulp conduit means having a plurality of pulp conduits spaced transversely across said headbox chamber and operatively connected to said pulp header means, said pulp flow regulating means and said headbox chamber;
- and each venturi being located adjacent to a respective pulp conduit.
8 more elements
Dependencies are inferred from the claim text.