US2535970A - Paper machine - Google Patents

Paper machine Download PDF

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Publication number
US2535970A
US2535970A US773902A US77390247A US2535970A US 2535970 A US2535970 A US 2535970A US 773902 A US773902 A US 773902A US 77390247 A US77390247 A US 77390247A US 2535970 A US2535970 A US 2535970A
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US
United States
Prior art keywords
cylinders
series
web
inlet
inlets
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
US773902A
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English (en)
Inventor
Trevisan Bruno
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.)
Papierfabrik Balsthal A G
PAPIERFABRIK BALSTHAL AG
Original Assignee
Papierfabrik Balsthal A G
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 Papierfabrik Balsthal A G filed Critical Papierfabrik Balsthal A G
Application granted granted Critical
Publication of US2535970A publication Critical patent/US2535970A/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
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/02—Drying on cylinders

Definitions

  • This invention relates to a machine for making paper and like substances, and more particularly to the portion of such machine in which the sheet of paper is dried by passing it over substantially synchronously rotating heated cylinders.
  • Conduit HI passes through the upper cylinders of the sections 2 and i, and conduit ll passes through the lower cylinders of said sections.
  • Conduit 12 passes through all the cylinders of section 3.
  • Conduits Ill, ll and ii are provided at their remote or outlet ends with respect to the aligned and directly connected upper aid lower series 5 and t, and all 01 alternate upiii per and lower series of section 3, in opposed staggered relation, with control valves lOa. Ila, lid, and emerge into discharge pipe I3. With this arrangement, only the inlet and the outlet temperature of each conduit need to be controlled to ensure the correct temperature gradient throughout the cylinders fed by this conduit. In the embodiment shown, the temperature will be slowly increasing through the sections I and 2, will be constant through the 3 cylinders adjacent to pipe 8, and will be slowly decreasing through the la 3 cylinders.
  • a drying apparatus for a paper making or like machine comprising a plurality of series of drying cylinders.
  • means for feeding a continuous web over the cylinders in series a heating water inlet disposed in the rear portion of the apparatus in the direction of movement of the web, and means for passing a heating water flow continuously through the respective series of cylinders in countercurrent with th travel of the web through the cylinders lying before the heating Water inlet, and opposite thereto in others.
  • a drying apparatus for a paper making or liire machine comprising a plurality of series of drying cylinders; means for feeding a continuous web over the cylinders in series; duct means for passing a heating water through said cylinders, the said duct means connecting to each of said series of cylinders; and an inlet to said duct means, the said inlet being so disposed relative to each of said series of cylinders and duct means that the majority of said cylinders is disposed ahead of said inlet in the direction of movement of said web so that the heating water is passed through said majority of cylinders in a direction opposite to that of the movement of the web and in the same direction through the minority thereof.
  • a drying apparatus for a paper making or like machine comprising a plurality of series l of drying cylinders; means for feeding a continuous web over the cylinders in series; duct means for passing a heating water through said cylinders, the said duct means connecting the majority of said cylinders successively in each series; and an inlet to said duct means, the said inlet being so arranged relative to said cylinders and duct means that the majority of said cylinders in certain of said series is disposed ahead of said inlet in the direction of movement of said web so that the heating water is passed through said majority of cylinders in a direction opposite to that of the movement oi the web, and through the others in the same direction as the direction of movement of the web.
  • a drying apparatus for a paper making or like machine comprising a plurality of series of drying cylinders; means for feeding a continuous web over the cylinders in series in one direction, duct means for passing a heating liquid through said cylinders, the said duct means connectin the majority of said cylinders in series; a common inlet; pipe connections branching from said inlet to said duct means, the said pipe connections being so arranged that the majority of said cylin-- ders in a plurality of said series is disposed ahead of said inlet in the direction of movement of said web so that the heating liquid is passed through said majority of cylinders in each series in a direction opposite to that of the movement of the web and through the minority of said cylinders in each series in a direction corresponding to that of the movement of the web, and valve means in the pipe connections leading to the inlet and outlet ends of each series of cylinders, whereby control of the inlet and outlet temperatures will insure correct temperature gradient throughout the series of cylinders.
  • a drying apparatus having a number of heated cylinders for drying a paper web and over which the was. travels in one direction, said cylinders beingarranged in a plurality of series certain of which have separate inlets and outlets, means for conducting hot water to said inlets, the inlets of certain of said series of cylinders feeding the hot water successively through a majority of the cylinders thereof in a direction opposite to the direction of travel of the web thereover, and successively through the other cylinders in the same direction as the direction of travel of the web,
  • a drying apparatus as set forth in claim 5, wherein the series of cylinders are arranged in horizontal upper and lower rows, certain of said rows having inlets leading to approximately,two-thirds of the cylinders of said rows for supplying the hot water thereto to successively flow through two-thirds in a direction opposite to the direction of travel of the web and through the other cylinders of said rows successively in the same direction as the 4 web travel, all in three flows, certain of said rows having valved inlets and outlets, and a discharge;
  • a drying apparatus as set forth in claim 5, wherein the series of cylinders are arranged in horizontal upper and lower rows, constituting felt dryers having inlets and outlets, other cylinders ar- I Number ranged in horizontal upper and lower rows therebetween having divided inlets with valved connections to the last-named inlets and connections with said last-named outlets, said divided inlets leading to approximately two-thirds of the cylinders of the last-named rows for supplying hot water thereto in a direction opposite to the direction of travel of the web to flow successively therethrough.

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  • Paper (AREA)
  • Drying Of Solid Materials (AREA)
US773902A 1946-10-25 1947-09-13 Paper machine Expired - Lifetime US2535970A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL260322X 1946-10-25

Publications (1)

Publication Number Publication Date
US2535970A true US2535970A (en) 1950-12-26

Family

ID=19781475

Family Applications (1)

Application Number Title Priority Date Filing Date
US773902A Expired - Lifetime US2535970A (en) 1946-10-25 1947-09-13 Paper machine

Country Status (7)

Country Link
US (1) US2535970A (en(2012))
BE (1) BE474635A (en(2012))
CH (1) CH260322A (en(2012))
DE (1) DE838685C (en(2012))
FR (1) FR954330A (en(2012))
GB (1) GB627811A (en(2012))
NL (1) NL61440C (en(2012))

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE318502C (en(2012)) * 1918-12-05
US1521223A (en) * 1919-01-21 1924-12-30 Robert H Wyld Process and apparatus for drying
US2046553A (en) * 1934-04-20 1936-07-07 Du Pont Cellophane Co Inc Film drying method and apparatus
US2142037A (en) * 1935-07-17 1938-12-27 Frederick C Stamm Moisture control system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE318502C (en(2012)) * 1918-12-05
US1521223A (en) * 1919-01-21 1924-12-30 Robert H Wyld Process and apparatus for drying
US2046553A (en) * 1934-04-20 1936-07-07 Du Pont Cellophane Co Inc Film drying method and apparatus
US2142037A (en) * 1935-07-17 1938-12-27 Frederick C Stamm Moisture control system

Also Published As

Publication number Publication date
NL61440C (en(2012))
GB627811A (en) 1949-08-16
CH260322A (de) 1949-03-15
BE474635A (en(2012))
FR954330A (fr) 1949-12-22
DE838685C (de) 1952-05-12

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