DE1295345B - Headbox for paper machines - Google Patents

Headbox for paper machines

Info

Publication number
DE1295345B
DE1295345B DEA48177A DEA0048177A DE1295345B DE 1295345 B DE1295345 B DE 1295345B DE A48177 A DEA48177 A DE A48177A DE A0048177 A DEA0048177 A DE A0048177A DE 1295345 B DE1295345 B DE 1295345B
Authority
DE
Germany
Prior art keywords
headbox
gap
paper machines
distribution chamber
paper
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
DEA48177A
Other languages
German (de)
Inventor
Nagell Carl Otto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
THUNES MEKANISKE VAERKSTED AS
Original Assignee
THUNES MEKANISKE VAERKSTED AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by THUNES MEKANISKE VAERKSTED AS filed Critical THUNES MEKANISKE VAERKSTED AS
Publication of DE1295345B publication Critical patent/DE1295345B/en
Pending legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/02—Head boxes of Fourdrinier machines

Landscapes

  • Paper (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Description

Die Erfindung betrifft einen Stoffauflauf für Papiermaschinen.The invention relates to a headbox for paper machines.

Stoffaufläufe dienen bei Papiermaschinen dazu, die Fasersuspension, d. h. den Stoff zu dem sogenannten Auflaufkasten zu führen, aus dem er durch einen Verteilerspalt auf das Metalltuch fällt. Der Stoffauflauf hat die Aufgabe, die Fasersuspension über die gesamte Maschinenbreite gleichmäßig zu verteilen und auszubreiten.Headboxes serve in paper machines to the fiber suspension, i. H. to lead the fabric to the so-called headbox, from which it falls through a distributor gap onto the metal cloth. The headbox has the task of distributing and spreading the fiber suspension evenly over the entire width of the machine.

Zur Lösung dieser Aufgabe sind zahlreiche Konstruktionen von Stoffaufläufen bekannt, von denen die sogenannten Querstromverteiler die größte Verbreitung haben. Sie besitzen ein konisches Zulaufro114 dessen Längsachse quer zur Laufrichtung der Papiermaschine liegt und sind -über einen, die ganze Papiermaschinenbreite einnehmenden Spalt mit einer dem Stoffauflaufkasten vorgeschalteten flachen, rechteckigen Verteilerkammer verbunden, welche sich unmittelbar an den Spalt anschließt. Hierzu sind in dem Verteilerrohr eine Reihe von öffnungen vorgesehen, an die einzelne Rohre angeschlossen sind, welche die Suspension in die Verteilerkammer und weiter zum Auflaufkasten führen. An den Rohren und Ausläufen entstehen kräftige Wirbel. Diese sind an sich erwünscht, um Faserklumpen aufzureißen, sind aber bei der beschriebenen Konstruktion nicht bei allen Rohren gleich stark, was die Lösung der Aufgabe, die Fasersuspension über die Maschinenbreite gleichmäßig zu verteilen, beeinträchtigt.To solve this problem, numerous headbox designs are known, of which the so-called cross-flow distributors are the most widespread. They have a conical inlet tube, the longitudinal axis of which is transverse to the direction of travel of the paper machine, and are connected via a gap that takes up the entire width of the paper machine to a flat, rectangular distribution chamber upstream of the headbox, which immediately adjoins the gap. For this purpose, a number of openings are provided in the distributor pipe, to which individual pipes are connected, which lead the suspension into the distributor chamber and on to the headbox. Strong eddies are created on the pipes and outlets. These are desirable per se in order to tear up clumps of fiber, but in the construction described are not equally strong for all pipes, which impairs the solution to the task of distributing the fiber suspension evenly over the width of the machine.

Bei anderen Konstruktionen tritt wiederum eine nur schwache oder überhaupt keine Wirbelbildung auf, so daß Faserklumpen auf das Metallsieb gelangen können. Diese Nachteile sind bei dem Stoffauflauf der Erfindung dadurch beseitigt, daß die Verteilerkammer stromabwärts des Spaltes in Kanäle mit senkrechten Wänden unterteilt ist. Ein solcher Stoffauflauf ist einfach herzustellen und leicht zu reinigen.In other constructions there is only a weak one or at all no vortex formation so that fiber clumps can get onto the metal screen. These disadvantages are eliminated in the headbox of the invention in that the Distribution chamber downstream of the gap divided into channels with vertical walls is. Such a headbox is simple to manufacture and easy to clean.

An Hand der Zeichnung, die beispielsweise schematisch eine bevorzugte Ausführungsfonn der Erfindung darstellt, soll die Erfindung näher erläutert werden.With reference to the drawing, which for example schematically shows a preferred one Illustrates embodiment of the invention, the invention will be explained in more detail.

Der Stoff wird bei der gezeichneten Vorrichtung in einem konischen Verteilerrohr 6 verteilt. Er verläßt das Verteilerrohr 6 in radialer Richtung und fließt in eine sich nach außen konisch öffnende Verteilerkammer 7 hinein, die in eine Anzahl nebeneinanderliegender, zur Achse des Verteilerrohrs 6 senkrechter Kanäle 8 aufgeteilt ist. Der schmalste Teil des Behälters, der dem Verteilerrohr 6 am nächsten lieA ist nicht aufgeteilt.In the device shown, the substance is distributed in a conical distributor pipe 6 . It leaves the distributor pipe 6 in the radial direction and flows into an outwardly conically opening distributor chamber 7 which is divided into a number of adjacent channels 8 perpendicular to the axis of the distributor pipe 6 . The narrowest part of the container that is closest to the manifold 6 is not divided.

Claims (1)

Patentansprach: Stoffauflauf für Papiermaschinen mit konischem. Zulaufrohr, dessen Längsachse quer zur Laufrichtung der Papiermaschine liegt und über einem, die ganze Papiermaschinenbreite einnehmenden Spalt mit einer, dem Stoffauflaufkasten vorgeschalteten flachen, rechteckigen Verteilerkammer verbunden ist, welche sich unmittelbar an den Spalt anschließt, dadurch gekennz e i c h n e t, daß die Verteilerkammer (7) stromabwärts des Spaltes in Kanäle (8) mit senkrechten Wänden unterteilt ist.Claim: headbox for paper machines with conical. Inlet pipe, the longitudinal axis of which lies transversely to the direction of travel of the paper machine and is connected via a gap that takes up the entire width of the paper machine to a flat, rectangular distribution chamber upstream of the headbox, which immediately adjoins the gap, characterized in that the distribution chamber (7) downstream of the gap is divided into channels (8) with vertical walls.
DEA48177A 1964-02-17 1965-01-20 Headbox for paper machines Pending DE1295345B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO152046A NO124737B (en) 1964-02-17 1964-02-17

Publications (1)

Publication Number Publication Date
DE1295345B true DE1295345B (en) 1969-05-14

Family

ID=19908919

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA48177A Pending DE1295345B (en) 1964-02-17 1965-01-20 Headbox for paper machines

Country Status (5)

Country Link
US (1) US3486972A (en)
DE (1) DE1295345B (en)
GB (1) GB1049541A (en)
NO (1) NO124737B (en)
SE (1) SE307506B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE29472E (en) * 1971-09-29 1977-11-15 Clark & Vicario Corporation Conduit system for conveying fibrous stock from deaerator chamber to headbox in papermaking machine
US4024016A (en) * 1975-12-18 1977-05-17 J. H. Horne & Sons, Inc. Cylinder mold former with flow box and pressure lid
CA1134188A (en) * 1980-04-03 1982-10-26 Denis Croteau Stock supply system for paper machine
EP0071118B1 (en) * 1981-07-31 1986-03-12 Mitsubishi Jukogyo Kabushiki Kaisha A flow rectifier
US5888353A (en) * 1996-10-03 1999-03-30 Beloit Technologies, Inc. Flatsided parabolic header for headboxes
US6264796B1 (en) * 1999-07-13 2001-07-24 The Mead Corporation Headbox diffuser

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2688905A (en) * 1949-03-17 1954-09-14 Beloit Iron Works Rectifier roll cleaned vane type flow spreader for paper machines
US2737087A (en) * 1950-04-25 1956-03-06 Int Paper Canada Headbox for paper machine
US2749815A (en) * 1953-12-31 1956-06-12 Dominion Eng Works Ltd Stock feeding means
US2869436A (en) * 1957-06-07 1959-01-20 Dominion Eng Works Ltd Stock cross-flow distribution
US2894581A (en) * 1957-03-26 1959-07-14 Rice Barton Corp Fluid stock distributor
US3061008A (en) * 1959-05-18 1962-10-30 Beloit Iron Works Stock flow distributor
US3092539A (en) * 1958-05-08 1963-06-04 Voith Gmbh J M Stock inlet for paper making machines and the like

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA503957A (en) * 1954-06-29 T. Bennett Weston Headbox for paper machine
CA592224A (en) * 1960-02-09 Dominion Engineering Works Limited Stock cross-flow distribution
NO119299B (en) * 1962-04-12 1970-04-27 Karlstad Mekaniska Ab

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2688905A (en) * 1949-03-17 1954-09-14 Beloit Iron Works Rectifier roll cleaned vane type flow spreader for paper machines
US2737087A (en) * 1950-04-25 1956-03-06 Int Paper Canada Headbox for paper machine
US2749815A (en) * 1953-12-31 1956-06-12 Dominion Eng Works Ltd Stock feeding means
US2894581A (en) * 1957-03-26 1959-07-14 Rice Barton Corp Fluid stock distributor
US2869436A (en) * 1957-06-07 1959-01-20 Dominion Eng Works Ltd Stock cross-flow distribution
US3092539A (en) * 1958-05-08 1963-06-04 Voith Gmbh J M Stock inlet for paper making machines and the like
US3061008A (en) * 1959-05-18 1962-10-30 Beloit Iron Works Stock flow distributor

Also Published As

Publication number Publication date
SE307506B (en) 1969-01-07
NO124737B (en) 1972-05-29
US3486972A (en) 1969-12-30
GB1049541A (en) 1966-11-30

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