US3448484A - Steam humidifying device,especially for paper webs - Google Patents

Steam humidifying device,especially for paper webs Download PDF

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Publication number
US3448484A
US3448484A US548778A US3448484DA US3448484A US 3448484 A US3448484 A US 3448484A US 548778 A US548778 A US 548778A US 3448484D A US3448484D A US 3448484DA US 3448484 A US3448484 A US 3448484A
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US
United States
Prior art keywords
steam
goods
surface area
area
web material
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.)
Expired - Lifetime
Application number
US548778A
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English (en)
Inventor
Gernot Muller
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.)
Joh Kleinewefers Soehne KG
Original Assignee
Joh Kleinewefers Soehne KG
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 Joh Kleinewefers Soehne KG filed Critical Joh Kleinewefers Soehne KG
Application granted granted Critical
Publication of US3448484A publication Critical patent/US3448484A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0063—Devices for threading a web tail through a paper-making machine
    • 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
    • D21F1/36—Guiding mechanisms
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G7/00—Damping devices

Definitions

  • the present invention relates to a device for steam humidifying fiat goods, especially webs of paper, as is customary when satining or glazing papers by means of calendars.
  • the steam is prevented from escaping into the machine shop and is forced to penetrate under a certain overpressure deeply into the capillaries of the web material passing over said surface area.
  • the friction between the web material and the surface area of said beam is reduced because the steam leaving the nozzles and acting upon the adjacent surface of the web material creates a certain cushion.
  • This brings about the particular advantage that the wet steam which is under pressure is in view of the roughness existing in the microrange of the web material carried along by the latter and forms a steam film carrying the web material.
  • This steam film due to its overpressure brings about an intensive contact between the fibers of the web material and the steam. This in turn brings about that due to the temperature drop with in the layer of the web material, the steam condensates and deeply penetrates into the fibers of the web material while the steam becomes less and less toward the end of the path around said beam.
  • the temperature drop may be controlled according to the present invention by a variable cooling of the web material. Such control may be arranged along that area of the beam where the web material again leaves said beam.
  • the cooling device may be arranged on the inside and/ or the outside of the beam.
  • the curvature of the beam surface over which the web material passes is so selected that the upper surface area over which the web material passes first has a radius of curvature which is considerably shorter than the radius of curvature of that area where the web material again leaves the beam.
  • the steam nozzles are arranged within the surface area with the shorter radius of curvature, i.e. within the area which is considerably more curved than the area where the web material leaves the beam.
  • the uniform steam distribution within the direction reversing beam is effected in a manner known per se, for instance by two pipes arranged one within the other.
  • the steam enters the inner pipe of smaller diameter and through nozzles distributes itself in the outer pipe from where it passes-through additional nozzles arranged on that side which is opposite to the side Where the first noz zles are located and passes into the inner chamber of said beam from where it flows to the humidifying nozzles.
  • the entire arrangement may be so designed that the outer steam pipe forms the supporting body for the entire beam which advantageously is made of sheet metal.
  • the direction reversing beam is rotated about the axis of the steam feeding pipe which is eccentrically located within said beam.
  • the direction reversing beam is also seen in the fact that it can take the place of the direction reversing rollers which are customarily arranged on the second steel roller of paper satining calendars.
  • the beam according to the present invention can take over the function of such rollers for maintaining the straight course of the webs and for holding the webs spread out.
  • the direction reversing beam 1 according to the present invention is shown arranged within the area of the second steel roller 2 of a calender which steel roller is located between two elastic rollers 3.
  • the direction reversing beam 1 of the present invention forms in this arrangement the direction reversing means associated with roller 2.
  • the paper web 4 leaves the upper bite between steel roller 2 and elastic roller 3 and moves in the direction of the arrow A over the curved outer surface of beam 1 and in the direction of the arrow B returns into the lower bite between steel roller 2 and elastic roller 3a.
  • the curved surface of beam 1 over which the web material passes is formed by a curved steel metal sheet 5.
  • the upper beam surface area is curved to a considerably greater extent than the lower beam surface area.
  • a narrow steam release slot or a row of nozzles 7 for the release of humidifying steam.
  • the paper web passing thereover will be pressed against the metal sheet 5 at a considerably greater pressure than is the case at the lower surface area of beam 1 which is considerably less curved.
  • the row of nozzles 7 is arranged within the range of the greatest pressure or still better shortly therebehind when looking in the direction of movement of the paper web over the beam so that the steam leaving the nozzles will have the possibility to pass in a certain quantity below the paper web and to produce the deep penetrating effect outlined further above.
  • Metal sheet 5 is by means of a strip 6 welded to a pipe 8 of relatively large diameter so that a hollow chamber 9 is formed in which the steam can spread.
  • the supply of steam is effected in a manner known per se -by a small pipe 10 which is arranged in pipe 8 in spaced relationship thereto.
  • Pipe 10 is connected to a steam supply line 11 and is rotatably journalled in bearings 12.
  • the inner steam pipe 10 has upwardly directed nozzles 13, whereas the nozzles 14 of the outer steam pipe are directed downwardly. This arrangement will assure a uniform distribution of the steam within beam 1 and will also assure a trouble-free release of the condensate through a conduit 15 for the evaporated liquid.
  • the temperature drop may be controlled by a cooling device. This may be effected by an insulating layer 16 provided in the interior of the lower portion of beam 1 and/ or by an air nozzle pipe 17 arranged outside said beam 1. Pipe 17 is provided with nozzles 18 through which cooling air is blown onto the web material.
  • dovetailed sliding members 20 are arranged in profiled rails 19 within the direction reversing beam 1 for closing the marginal nozzles over the necessary width of the beam.
  • the tilting of the beam 1 may be effected in any desired manner, for instance through the intervention of adjustable linkage means 21.
  • a device for steam humidifying flat goods, especially webs of paper, particularly for use in connection with calendars which comprises: a hollow beam having a curved outer entrance surface area for receiving flat goods in a continuous movement from the respective upper portion of a rotatable roller and also including a releasing surface area for returning the goods passed over said entrance surface area to the respective lower portion of the same roller from which the goods are fed to said entrance area, and steam conveying means leading from the interior of said hollow beam to approximately that surface section of said entrance surface area which will be under the greatest looping pressure when the respective goods are looped around and passed over said curved outer surface of said beam.
  • said curved outer surface also includes a curved intermediate surface area with the radius of curvature thereof gradually increasing from said entrance surface area to said releasing surface area, the radius of curvature of said entrance surface area being considerably less than that of said releasing area whereby the respective portions of the goods passing over said entrance area will be pressed thereagainst at a considerably higher pressure than the pressure holding the respective portions of the goods passing over said releasing area close to the latter.
  • a device which includes insulating means arranged on the inside of that wall portion of said hollow beam which forms said releasing surface area.
  • a device which includes air cooled jacket means arranged on the inside of that wall portion of said hollow beam which forms said releasing surface area.
  • a device which includes nozzle pipe means adapted to be connected to a supply of cooling air and located within the range of said releasing surface area for directing cooling air onto flat goods passing over said releasing surface area.
  • a device in which the outer surface of said hollow beam is curved in a direction transverse to the path of movement of the flat goods from said receiving area to said releasing area.
  • a device which includes bearing means eccentrically pivotally supporting said hollow beam.
  • said steam conveying means includes steam nozzle means extending from one marginal portion of said receiving area to the oppositely located marginal portion of said receiving area, and means associated with at least those nozzle means which are adjacent said marginal portions for selectively closing the same, whereby those nozzle means can be 5 made ineffective which are not covered by the flat goods passing thereover.
  • a device which includes means associated with said steam nozzle means and'operable to control the steam pressure of the steam to be passed therethrough in conformity with the degree of humidity of the flat goods to be passed over said entrance area.
  • said steam conveying means includes a plurality of co-axially arranged pipe means located one within the other and respectively provided with steam outlet means in alternate directions, at least some of said pipe means forming part of the frame work of said beam.

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  • Paper (AREA)
US548778A 1965-05-10 1966-05-09 Steam humidifying device,especially for paper webs Expired - Lifetime US3448484A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK56069A DE1295993B (de) 1965-05-10 1965-05-10 Dampfbefeuchtungseinrichtung fuer Warenbahnen, insbesondere fuer Papierbahnen

Publications (1)

Publication Number Publication Date
US3448484A true US3448484A (en) 1969-06-10

Family

ID=7227699

Family Applications (1)

Application Number Title Priority Date Filing Date
US548778A Expired - Lifetime US3448484A (en) 1965-05-10 1966-05-09 Steam humidifying device,especially for paper webs

Country Status (5)

Country Link
US (1) US3448484A (enEXAMPLES)
DE (1) DE1295993B (enEXAMPLES)
FI (1) FI43535B (enEXAMPLES)
GB (1) GB1101767A (enEXAMPLES)
SE (1) SE309357B (enEXAMPLES)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3850792A (en) * 1972-10-26 1974-11-26 R Pennington Steam drying device for paper making machine

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2529671C2 (de) * 1975-07-03 1982-07-15 Hans 7930 Ehingen Röscheisen Vorrichtung zum Erwärmen einer Faserstoffbahn
FI71966C (fi) * 1983-11-22 1987-03-09 Myllykoski Oy Foerfarande och anordning foer fuktning av en pappersbana.
FI72552C (fi) * 1984-02-08 1987-06-08 Waertsilae Oy Ab Foerfarande och anordning foer behandling av bana.
FI78331C (fi) * 1987-12-23 1989-07-10 Tampella Oy Ab Torkparti vid en pappersmaskin.
DE3839056C2 (de) * 1988-11-18 1994-07-14 Kleinewefers Gmbh Schutzvorrichtung für den Einlaufspalt von Kalandern und anderen Walzenmaschinen
DE10221849A1 (de) 2002-05-16 2003-11-27 Voith Paper Patent Gmbh Befeuchtungseinrichtung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2304474A (en) * 1941-05-22 1942-12-08 Du Pont Heat treatment of textile fabrics
US2718712A (en) * 1953-03-25 1955-09-27 George W Swift Jr Inc Paper web pre-steamer
US2974512A (en) * 1960-03-29 1961-03-14 Chemstrand Corp Textile treating apparatus

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3127080A (en) * 1964-03-31 Web turning device
DE71988C (de) * H. SARFERT in Chemnitz, Zwickauerstrafse 107 Maschine zum Dämpfen und Pressen von Geweben
DE528346C (de) * 1927-07-13 1931-06-27 Martin Vermoehlen Vorrichtung zur Herstellung krumpffreier Tuchware
US2366484A (en) * 1941-07-10 1945-01-02 Champion Paper & Fibre Co Apparatus for applying moisture to paper webs
US2621504A (en) * 1946-09-04 1952-12-16 Spooner William Wycliffe Apparatus for steaming webs
DE943030C (de) * 1953-09-13 1956-05-09 Kleinewefers Soehne J Breitstreich-Vorrichtung fuer Papierkalander

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2304474A (en) * 1941-05-22 1942-12-08 Du Pont Heat treatment of textile fabrics
US2718712A (en) * 1953-03-25 1955-09-27 George W Swift Jr Inc Paper web pre-steamer
US2974512A (en) * 1960-03-29 1961-03-14 Chemstrand Corp Textile treating apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3850792A (en) * 1972-10-26 1974-11-26 R Pennington Steam drying device for paper making machine

Also Published As

Publication number Publication date
GB1101767A (en) 1968-01-31
FI43535B (enEXAMPLES) 1970-12-31
DE1295993B (de) 1969-05-22
SE309357B (enEXAMPLES) 1969-03-17

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