Perforated sheet for the head box of a paper machine
AssigneeOy Tampella AB Lapintie
InventorPekka Majaniemi
Life of this patent
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Abstract
Perforated sheet for a head box of a paper machine, the perforated sheet being provided with a number of parallel flow passages starting from a common front face. The perforated sheet is provided with a set of feeding ducts which can be connected to a source of flushing liquid and which is connected, by means of flushing ducts, to the front face of the perforated sheet. The perforated sheet preferably consists of several rod elements, each of which is provided with a flow passage and which have been assembled as parallel to each other, side by side and one above the other, into an integrated package.
Claims6
A perforated sheet for a head box of a paper machine, comprising several rod elements each including a flow passage, said flow passages arranged in parallel into an integrated package and starting from a common front face of said perforated sheet and having inlet openings;
- said rod elements each being integrally formed with a feeding duct, said feeding ducts being substantially parallel to said front face of said perforated sheet and being connected to a source of flushing liquid to feed said flushing liquid through said feeding ducts;
- and
- said rod elements each being integrally formed with a flushing duct, said flushing ducts connecting said feeding ducts to said front face, and terminating in said front face at points between said inlet openings of said passages.
Dependencies are inferred from the claim text.