US3539447A - Delivering system for paper-making machine - Google Patents

Delivering system for paper-making machine Download PDF

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Publication number
US3539447A
US3539447A US567943A US3539447DA US3539447A US 3539447 A US3539447 A US 3539447A US 567943 A US567943 A US 567943A US 3539447D A US3539447D A US 3539447DA US 3539447 A US3539447 A US 3539447A
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United States
Prior art keywords
collector
headbox
machine
paper
delivering system
Prior art date
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Expired - Lifetime
Application number
US567943A
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English (en)
Inventor
Paul Francois Springuel
Edmond Guillam Chantraine
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.)
Thiry & Co sa
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Thiry & Co SA
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 Thiry & Co SA filed Critical Thiry & Co SA
Application granted granted Critical
Publication of US3539447A publication Critical patent/US3539447A/en
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    • 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

Definitions

  • a delivering system for fibers in suspension for a papermaking machine comprising a vertical collector having a circular wall and a bottom, a pulp feed tube extending into the collector, the collector having an anti-splash ring surrounding the feed tube and forming an annular chamber with the collector wall, and a plurality of distributor tubes connected to said annular chamber for distributing inlet feed to a headbox over the width thereof.
  • the present invention relates to a new delivering system for a paper-making machine or a machine for making cardboard or the like fibrous product in general, of the Fourdrinier type or the like, with a view to improving the uniformity of supply to the headbox of the said machine.
  • the delivering system of the type comprising a vertical collector disposed in the axis of the machine and a series of tubes which distribute the inlet feed over the width of the machine, is characterised in that the collector is open to the atmosphere or closed and then subjected to a vacuum or to pressure and is constructed in such a way that the pulp inlet tube dips into its upper part and its base has a certain number of apertures from which the distributor tubes extend, which tubes are connected to the entry part of the headbox of the machine and all have the same charge loss, i.e. reduction in fluid pressure circulated in a tubular connector.
  • the pulp inlet tube or feed tube dips right down to the base of the collector on which is mounted an anti-splash ring which surrounds the said feed tube concentrically and at a certain distance from it.
  • the apertures provided in the base of the collector are in the annular chamber formed by the anti-splash ring and the collector tube on one or more circumferences concentric with the said collector and at equidistant intervals apart.
  • the whole arrangement of distributor tubes extending from the apertures at the base of the collector is directed down Wardly along an imaginary line parallel to the axis of the head roller of the machine or any other roller if the machine does not have a head roller, and starting from 3,539,447 Patented Nov. 10, 1970 this imaginary line, the said tubes are parallel to each other and to the axis of the machine.
  • the invention further consists in partitioning the inlet part of the headbox of the paper-making machine into tube compartments.
  • the pulp inlet in such a manner that it comes from a box at constant level, the outlet aperture of which is arranged in the axis of the collector.
  • the flow control valve is arranged at the base of the pulp feed pipe in the base of the collector.
  • FIG. 1 is a diagrammatic plan view of the delivering system according to the invention, connected to a headbox of a paper-making machine.
  • FIG. 2 is an elevational section through the delivering system of FIG. 1 taken along the line X-Y.
  • FIG. 3 is an elevational section of the inlet part to the headbox in a particular embodiment which forms part of the system according to the invention.
  • FIG. 4 is a partial section through the line 44 of FIG. 3.
  • FIG. 5 is a diagrammatic elevational section of a dif ferent embodiment of the delivering system according to the invention.
  • the delivering system consists of a vertical collector or collector pipe 1 open to the atmosphere, in the upper part of which is the usual pulp inlet tube 2 which is used in all paper-making machines, this tube being extended axially into the said collector by a feed tube 3.
  • a flow control valve 4 On the tube 2 is inserted a flow control valve 4. It must be understood that this flow valve 4 may be replaced by a valve mounted on a system of pipes which may be a system of recycling pipes.
  • the said collector is situated along the axial plane X-Y of the paper-making machine.
  • an anti-splash ring 5 which is concentric to the said collector and surrounds the feed tube 3 at a certain distance from it.
  • an anti-splash ring 5 which is concentric to the said collector and surrounds the feed tube 3 at a certain distance from it.
  • These apertures 7, which are here six in number, are arranged on the circumference of a circle which is concentric to the said collector and to the ring, and they are equidistant. In the case where these apertures are more numerous, they could be arranged on several concentric circles.
  • each nozzle 7 is attached a distributor tube 8.
  • These tubes 8 extend downwards and they all have the same charge loss and are arranged in such a way that they are distributed over an imaginary line AA parallel to the axis of the head roller 9 of the machine, which line AA may be situated underneath the collector or under the headbox 10 which is shown fragmentarily, or at a certain distance between the said collector and the headbox.
  • the tubes 8 thereafter extend strictly parallel to each other and to the axial plane XY of the machine to open into the headbox inlet 11.
  • a delivering system for a paper-making machine functions as follows:
  • the pulp arriving from the feed tube 3 ascends in the collector 1 to flow from there through the nozzles 7', the tubes 8 and the headbox inlet 11 into the headbox 10. As soon as the flow is properly established, a certain level of liquid is maintained in the collector 1. The speed of flow must be sufficient to prevent any flocculation.
  • the collector 1 has been shown open to the atmosphere but according to the invention it may also be closed in its upper part and then kept under pressure or under a vacuum so as to form a sheet of air between the top of the liquid in the collector and the upper wall of the collector.
  • the number and diameter of apertures 7 and consequently of nozzles 7' and tubes 8 will vary according to the Width of the machine, the maximum feed and the height available between the top of the collector and the maximum level provided in the headbox in operation in the case where the headbox and collector are open to the atmosphere or the corresponding manometric height which is available in the case where the collector and/or the headbox are closed and subjected either to a vacuum or to pressure.
  • the system according to the invention further consists in partitioning the inlet part 11 of the headbox 10 of the machine and providing in the said inlet a compartment 11 for each tube 8.
  • the pulp inlet tube 2 in such a way that it opens into a bottom portion 12a of a box 12 of constant level the outlet aperture 12', to which is connected the feed tube 3, is disposed in the axis of the collector 1 and above the said feed tube 3.
  • the control valve 4 may be disposed at the lower end of the feed tube, that is to say towards the base of the collector, so that the said constant level box 12 can be sufiiciently close to the collector to prevent any great loss of space in height.
  • An overflow tube 13 is also provided in the constant level box 12.
  • Delivering system for a paper-making machine or other machine provided with a headbox and supplied with fibers in suspension comprising a vertical collector disposed axially of said machine, said collector having a circular wall and a bottom, a feed tube extending into said collector axially thereof, a valve in said feed tube positioned to adjust suspension flow to said collector, an anti-splash ring mounted on said bottom concentric to said collector and surrounding said feed tube, said antisplash ring forming an annular chamber with said circular Wall, said bottom having a plurality of circumferentially arranged, equidistant, downwardly extending nozzles communicating with said chamber, a plurality of distributor tubes connected to said nozzles and extending downwardly from said collector to intersect along an imaginary line, perpendicular to the axial plane of the machine, said tubes extending thereafter parallel to each other and to said axial plane to connect into a compartmented inlet of said headbox.

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  • Paper (AREA)
US567943A 1965-07-28 1966-07-26 Delivering system for paper-making machine Expired - Lifetime US3539447A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE667576 1965-07-28

Publications (1)

Publication Number Publication Date
US3539447A true US3539447A (en) 1970-11-10

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US567943A Expired - Lifetime US3539447A (en) 1965-07-28 1966-07-26 Delivering system for paper-making machine

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US (1) US3539447A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CH (1) CH463263A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ES (1) ES330082A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1105690A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NL (1) NL6610607A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3769155A (en) * 1970-02-18 1973-10-30 Voith Gmbh J M Stock inlet system for a paper making machine including converging settling ducts
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

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09136969A (ja) * 1995-11-16 1997-05-27 Kawasaki Steel Corp 繊維強化熱可塑性樹脂シートの湿式製造方法及び装置
EP0825011B1 (en) * 1995-02-22 2002-12-11 Kawasaki Steel Corporation Apparatus for wet manufacturing fiber reinforced thermoplastic resin sheet

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2688276A (en) * 1951-05-11 1954-09-07 Marathon Corp Head box for paper machines
US3266974A (en) * 1963-07-16 1966-08-16 Great Lakes Carbon Corp Paper stock slurry feed apparatus and process

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2688276A (en) * 1951-05-11 1954-09-07 Marathon Corp Head box for paper machines
US3266974A (en) * 1963-07-16 1966-08-16 Great Lakes Carbon Corp Paper stock slurry feed apparatus and process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3769155A (en) * 1970-02-18 1973-10-30 Voith Gmbh J M Stock inlet system for a paper making machine including converging settling ducts
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

Also Published As

Publication number Publication date
NL6610607A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1967-01-30
CH463263A (fr) 1968-09-30
ES330082A1 (es) 1967-06-01
GB1105690A (en) 1968-03-13

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