US3861997A - Paper machine press arrangement with stacked press rolls - Google Patents

Paper machine press arrangement with stacked press rolls Download PDF

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Publication number
US3861997A
US3861997A US317244A US31724472A US3861997A US 3861997 A US3861997 A US 3861997A US 317244 A US317244 A US 317244A US 31724472 A US31724472 A US 31724472A US 3861997 A US3861997 A US 3861997A
Authority
US
United States
Prior art keywords
nip
roll
felt
press
web
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
US317244A
Other languages
English (en)
Inventor
Donald A Ely
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.)
Beloit Corp
Original Assignee
Beloit Corp
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 Beloit Corp filed Critical Beloit Corp
Priority to US317244A priority Critical patent/US3861997A/en
Priority to JP48107092A priority patent/JPS5140166B2/ja
Priority to CA188,822A priority patent/CA993243A/en
Application granted granted Critical
Publication of US3861997A publication Critical patent/US3861997A/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
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/04—Arrangements thereof

Definitions

  • a press section for a paper making machine includes a first felt receiving a web from a fourdrinier and passing through a first nip formed between first and second press rolls with a second felt passing through the first nip and wrapping the second roll while passing through a second nip formed between a third and the second press roll with the web being carried by the second felt through a third press nip formed between additional press rolls.
  • a further object of the invention is to provide an improved paper machine press section which is complementary to a twin wire machine and which obtains optimum dewatering of the web with substantial uniformity from both directions.
  • a still further object of the invention is to provide an improved paper making machine which has a press section that is very compact and avoids open draws along runs so that control of the web is not lost.
  • FIGURE of the drawing is a somewhat schematic side elevational view showing a press. section of a paper making machine constructed and operating in accordance with the principles of the present invention.
  • drinier section'of the machine will be a twin wire section so that the finished web will be substantially uniform on both sides.
  • the web is carried through a machine and its position is indicated at W.
  • the fourdrinier wire travels over a couch roll 11 and a turning roll 12, and in a downrunning section of the wire 10a, the web is picked off the surface of a first felt 13.
  • the felt is formed in a loop and travels over a number of supporting guide rolls which are not numbered.
  • the felt 13 passes over a pick-up roll 14 having a suction gland 15 therein.
  • the web then travels on the lower surface of the felt to pass through a first press nip at N-l.
  • the first nip is a double felted nip with the web being carried between the first felt I3 and a second felt 27.
  • the first nip is formed between first and second press rolls l6 and 18 respectively.
  • the first felt is wrapped over the first press roll 16.
  • the first press roll is a suction roll with a gland 17 to aid in the extraction of water from the web and transfer to the felt 13.
  • the second press roll 18 is wrapped by the second felt 27.
  • the web in passing through the first nip N-l follows the second felt 27 and is transferred to the felt as aided by the first suction gland 19 positioned at the outgoing side of the first nip N-l.
  • the web is carried on the outer surface of the second felt 27 to pass through a second nip N-2.
  • a suction gland 20 is positioned opposite the felt.
  • the second nip is formed between the second roll 18 and a third press roll 21.
  • the third press roll has grooves 22 on its outer surface to aid in the transfer of water to a third felt 23 which also passes through the second nip N-2.
  • the second nip is also a double-felted nip.
  • Suitable guide rolls for the second felt 27 and the third felt 23 are provided which need not be described in detail.
  • Suitable felt dewatering means will be provided along the felt loop for removing water therefrom after the felt leaves the nip and before it returns to the nip.
  • the web is carried on the upper surface of the second felt 27 to a third nip N-3.
  • first and third press rolls l6 and 21 are substantially apart relative to the intermediate second press roll 18. The nip forces due to the first and third rolls are diametrically opposed and balance each other to reduce the tendency of the intermediate roll 18 to bend, thereby making it possible to use a suction roll and yet obtaining relatively high nip pressures.
  • first and second nips N-l and N-2 are relatively close together and that the web is completely controlled by being held to the second felt 27 in the run between the two nips. Following the second nip the web is on the upper surface of the second felt 27 with it passing downwardly so that there is no possibility of the web coming off the felt or getting out of control.
  • the third nip is formed between a roll couple including an upper press roll 24 and a lower press roll 26.
  • lower press roll is grooved shown at 25 to aid in the water being transferred from the web, which is on the upper surface of the felt 27, to the felt.
  • the web will be carried by suitable felts, not shown in detail, to the dryer section of the machine, after which it will travel through a calender and then be wound on a roll.
  • a perforate second press roll forming a first nip with the first roll on the upper side of said first roll;
  • a third press roll forming a second nip with the second roll substantially opposite said first nip relative to the axis of said second roll;
  • a first felt for carrying a paper web extending horizontally from the forming section and engaging the bottom of the first roll, wrapping substantially 180 and threaded through said first nip with the web carrying side facing the second roll;
  • said second felt extending from the second nip to the third nip and carrying the web through the third nip.
  • the roll of said roll couple supporting said second felt is a grooved roll.
  • a press section for a paper making machine comprising in combination:
  • a third press roll forming a second nip with the second roll shell positioned after the first nip located substantially opposite the first nip relative to the axis of the second roll;
  • a first felt for receiving and carrying a paper web on a web carrying surface thereof through the first nip with the web carrying surface facing the second roll; said first felt extending substantially horizontally to the first roll and wrapping the first roll for substantially a suction gland within the first roll opposite the first felt;
  • said second felt wrapping the second roll continuously between nips and passing through the second nip with the web carried on the outer surface of the second felt between the first and second nip.
  • a press section for a paper making machine constructed in accordance with claim 4:
  • third press roll has a plurality of grooves formed in the outer surface thereof.
  • a press section for a paper making machine constructed in accordance with claim 4:

Landscapes

  • Paper (AREA)
US317244A 1972-12-21 1972-12-21 Paper machine press arrangement with stacked press rolls Expired - Lifetime US3861997A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US317244A US3861997A (en) 1972-12-21 1972-12-21 Paper machine press arrangement with stacked press rolls
JP48107092A JPS5140166B2 (OSRAM) 1972-12-21 1973-09-25
CA188,822A CA993243A (en) 1972-12-21 1973-12-21 Paper machine press arrangement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US317244A US3861997A (en) 1972-12-21 1972-12-21 Paper machine press arrangement with stacked press rolls

Publications (1)

Publication Number Publication Date
US3861997A true US3861997A (en) 1975-01-21

Family

ID=23232771

Family Applications (1)

Application Number Title Priority Date Filing Date
US317244A Expired - Lifetime US3861997A (en) 1972-12-21 1972-12-21 Paper machine press arrangement with stacked press rolls

Country Status (3)

Country Link
US (1) US3861997A (OSRAM)
JP (1) JPS5140166B2 (OSRAM)
CA (1) CA993243A (OSRAM)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4324820A (en) * 1980-07-18 1982-04-13 St. Regis Paper Company Method and apparatus for coating a paper web
US4586984A (en) * 1983-03-25 1986-05-06 Valmet Oy Press section for a fibrous web
WO1992008003A1 (en) * 1990-10-31 1992-05-14 Beloit Corporation Paper web heating on a press roll
EP0496965A1 (de) * 1991-01-26 1992-08-05 J.M. Voith GmbH Pressenpartie
EP0548038A1 (en) * 1991-12-19 1993-06-23 Valmet Corporation Compact press section with closed draw of the web in a paper machine
US5507104A (en) * 1987-02-13 1996-04-16 Beloit Technologies, Inc. Web drying apparatus
US5611892A (en) * 1991-12-19 1997-03-18 Valmet Corporation Compact press section in a paper machine
US5766422A (en) * 1996-08-01 1998-06-16 Beloit Technologies, Inc. Lightweight high temperature pressing
US5832625A (en) * 1987-02-13 1998-11-10 Beloit Technologies, Inc. Apparatus for drying a web
US5891308A (en) * 1996-02-02 1999-04-06 Beloit Technologies, Inc. Method of pressing a paper web of tropical hardwood fibers
US6049999A (en) * 1987-02-13 2000-04-18 Beloit Technologies, Inc. Machine and process for the restrained drying of a paper web

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1472572A (en) * 1922-08-14 1923-10-30 John D Tompkins Method and machine for making paper
US2386584A (en) * 1940-12-02 1945-10-09 Beloit Iron Works Reverse press section for papermaking machines
US2672078A (en) * 1950-04-05 1954-03-16 Beloit Iron Works Suction press assembly
US3268390A (en) * 1965-10-28 1966-08-23 Beloit Corp Grooved roll double-felted press for papermaking
US3355350A (en) * 1964-12-18 1967-11-28 Allis Chalmers Mfg Co Paper machine
US3600779A (en) * 1969-12-12 1971-08-24 Allis Chalmers Mfg Co Press roll with tapered grooves
US3607626A (en) * 1968-09-17 1971-09-21 Karlstad Mekaniska Ab Double-felted press

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1472572A (en) * 1922-08-14 1923-10-30 John D Tompkins Method and machine for making paper
US2386584A (en) * 1940-12-02 1945-10-09 Beloit Iron Works Reverse press section for papermaking machines
US2672078A (en) * 1950-04-05 1954-03-16 Beloit Iron Works Suction press assembly
US3355350A (en) * 1964-12-18 1967-11-28 Allis Chalmers Mfg Co Paper machine
US3268390A (en) * 1965-10-28 1966-08-23 Beloit Corp Grooved roll double-felted press for papermaking
US3607626A (en) * 1968-09-17 1971-09-21 Karlstad Mekaniska Ab Double-felted press
US3600779A (en) * 1969-12-12 1971-08-24 Allis Chalmers Mfg Co Press roll with tapered grooves

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4324820A (en) * 1980-07-18 1982-04-13 St. Regis Paper Company Method and apparatus for coating a paper web
US4586984A (en) * 1983-03-25 1986-05-06 Valmet Oy Press section for a fibrous web
US5636448A (en) * 1987-02-13 1997-06-10 Beloit Technologies, Inc. Web drying apparatus
US6049999A (en) * 1987-02-13 2000-04-18 Beloit Technologies, Inc. Machine and process for the restrained drying of a paper web
US5832625A (en) * 1987-02-13 1998-11-10 Beloit Technologies, Inc. Apparatus for drying a web
US5507104A (en) * 1987-02-13 1996-04-16 Beloit Technologies, Inc. Web drying apparatus
WO1992008003A1 (en) * 1990-10-31 1992-05-14 Beloit Corporation Paper web heating on a press roll
EP0496965A1 (de) * 1991-01-26 1992-08-05 J.M. Voith GmbH Pressenpartie
US5256257A (en) * 1991-01-26 1993-10-26 J. M. Voith Gmbh Press belt support for compact press section of paper making machine
US5611892A (en) * 1991-12-19 1997-03-18 Valmet Corporation Compact press section in a paper machine
EP0548038A1 (en) * 1991-12-19 1993-06-23 Valmet Corporation Compact press section with closed draw of the web in a paper machine
US5891308A (en) * 1996-02-02 1999-04-06 Beloit Technologies, Inc. Method of pressing a paper web of tropical hardwood fibers
US5766422A (en) * 1996-08-01 1998-06-16 Beloit Technologies, Inc. Lightweight high temperature pressing

Also Published As

Publication number Publication date
CA993243A (en) 1976-07-20
JPS5140166B2 (OSRAM) 1976-11-01
JPS4987808A (OSRAM) 1974-08-22

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