Global Patent Index - EP 0997577 A1

EP 0997577 A1 2000-05-03 - Headbox

Title (en)

Headbox

Title (de)

Stoffauflauf

Title (fr)

Caisse de tête

Publication

EP 0997577 A1 (DE)

Application

EP 99112933 A

Priority

DE 19845722 A

Abstract (en)

[origin: US6248214B1] Headbox for a paper machine having a feed part, a central part extending across the machine width, and a nozzle. The nozzle extends across the machine width and has at least one continuous wall that runs across the machine width transverse to the lengthwise flow. For absorbing and discharging nozzle expansion forces in a sectional manner, several separate individual support devices distributed across the machine width for influencing the nozzle aperture are attached to the at least one, preferably continuous wall. The resulting lines of force of each support device remain at least substantially in a plane lying perpendicular to the direction of the machine width and in the flow direction, and the corresponding supporting forces individually, at least substantially, are directed to and absorbed in the central part in the plane of the flow direction.

Abstract (de)

Ein Stoffauflauf für eine Papiermaschine umfaßt einen Zulaufteil (2), einen sich über die Maschinenbreite erstreckenden Zentralteil (1) und eine sich über die Maschinenbreite erstreckende Düse (56), die wenigstens eine sich quer zur Strömungslängsrichtung über die Maschinenbreite erstreckende durchgehende Wand (4, 5) aufweist. Zur abschnittsweisen Aufnahme und Ableitung von Düsenaufweitkräften sind mehrere über die Maschinenbreite verteilte einzelne und zur Beeinflussung der Düsenöffnung (15) getrennte Abstützeinrichtungen (14) an zumindest einer vorzugsweise durchgehenden Wand (4) befestigt, wobei die resultierende Kraftlinie (K) einer jeden Abstützeinrichtung (14) jeweils zumindest im wesentlichen in einer zur Richtung der Maschinenbreite senkrechten und in Strömungsrichtung liegenden Ebene verbleiben und die entsprechenden Abstützkräfte einzeln zumindest im wesentlichen in der jeweils zugehörigen in Strömungsrichtung liegenden Ebene in das Zentralteil (1) eingeleitet und aufgenommen werden. <IMAGE>

IPC 1-7 (main, further and additional classification)

D21F 1/02

IPC 8 full level (invention and additional information)

D21F 1/02 (2006.01)

CPC (invention and additional information)

D21F 1/026 (2013.01); D21F 1/02 (2013.01); D21F 1/028 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT DE FI SE

EPO simple patent family

US 6248214 B1 20010619; AT 254207 T 20031115; DE 19845722 A1 20000406; EP 0997577 A1 20000503; EP 0997577 B1 20031112

INPADOC legal status


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- Document: DE 59907703 P 20031218

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- Owner name: VOITH PAPER PATENT GMBH

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