US3796148A - Pressing device for the removal of water from cellulose or the like - Google Patents

Pressing device for the removal of water from cellulose or the like Download PDF

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Publication number
US3796148A
US3796148A US00238414A US3796148DA US3796148A US 3796148 A US3796148 A US 3796148A US 00238414 A US00238414 A US 00238414A US 3796148D A US3796148D A US 3796148DA US 3796148 A US3796148 A US 3796148A
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United States
Prior art keywords
rollers
station
pairs
roller
dehydrated
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Expired - Lifetime
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US00238414A
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English (en)
Inventor
O Heissenberger
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.)
ANDRITZ-RUTHNER Inc
Andritz AG
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Andritz AG
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Assigned to ARUS ANDRITZ-RUTHNER, INC., ROBINSON PLAZA, BUILDING 3, 2ND FLOOR, PITTSBURGH, PA., 15205, A CORP OF DE. reassignment ARUS ANDRITZ-RUTHNER, INC., ROBINSON PLAZA, BUILDING 3, 2ND FLOOR, PITTSBURGH, PA., 15205, A CORP OF DE. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: MASCHINENFABRIK ANDRITZ ACTIENGESELLSCHAFT
Assigned to ANDRITZ-RUTHNER, INC. reassignment ANDRITZ-RUTHNER, INC. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE DATE: JULY 11, 1988 Assignors: ARUS ANDRITZ-RUTHNER, INC.
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Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/24—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using an endless pressing band
    • 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
    • D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
    • D21F1/80—Pulp catching, de-watering, or recovering; Re-use of pulp-water using endless screening belts

Definitions

  • ABSTRACT Foreign Application Priority Data This invention relates to an improvement in a pressing Apr. 5, 1971 Austria 2892/71 I dev1ce for the removal of water from solid materials, 52] us. c1 100/1118, 100/154, 162/358 Particularly Cellulose Similar fibrous material [51 Int. Cl B301) 9/24, B30b 5/04 Pf a registering f a Pr iminary pressing sta [58] Field of Search 100/151-154, and a main Pressmg SW10 induding Pairs 10, upper and lower horizontal rollers between a 210 314, 312, 358 361, 205 351; 144/281 B sheet or web of material to be dehydrated is passed, on a sieve or between two sieves.
  • the improvement comprises a roller of at least one roller pair mounted [56] References Cited ff h h h u h 1 UNITED STATES PATENTS 0 SBt WIt respeot to e ot er r0 er in t e trave mg direction of the sleve, in said registermg station. 403,744 5/1889 Flood 162/314 502,523 8/1893 Lockstaedt 100/151 4 Claims, 3 Drawing Figures PATENTED HA8 1 2 I974 SHEUIWZ PATENTEOIARIZIHH 3396; 148
  • the present invention relates to a press or squeezing system designed for the removal of water from cellulose or similar fibrous materials, or other substances, in which a sheet or web of material to be dehydrated is passed, on a sieve or between two sieves, between pairs of horizontal rollers.
  • a press or squeezing device or system the sheet or web of material, after the water has been suctioned off in the wet station, passes into the so-called registering station in which a first squeezing-out of-the moisture is effected between pairs of rollers.
  • the linear pressure between the roller pairs is still relatively small in order that the still insufficiently solidified sheet or web of material be not torn and/or damaged, and higher pressures are applied only in the subsequent preliminary squeezing or pressing station when the material emerges from the registering station already solidified. Also, the uniformity of the material thickness is not yet determined in the registering station. In the registering station, the rollers are mounted in a stationary manner, and in the known constructions the roller gap or clearance is therefore precisely determined.
  • the present invention has the object of eliminating these disadvantages and drawbacks.
  • one roller in part of the roller pairs of the registering station, one roller is offset or is staggered as compared with and with respect to the other roller, in the traveling or operating direction of the sieve.
  • the thickness of the sheet of material is precisely determined by virtue of the axial distance.
  • the thickness of the sheet of material is not rigid despite the rigid positioning of the rollers, but it is instead elastically delimited by the respectively oppositely-disposed sieve.
  • the linear pressure between the registering or tube rollers is rendered uniform.
  • the density of the material also becomes more uniform; the danger that the sheet or web of material is torn as a result of an overpressing action is precluded, and overloading of the rollers is eliminated.
  • the thickness of the sheet of material is changed in proportion to the water removal so that the width of the roller gap will decrease from the beginning to the end of the registering station.
  • the degree of the staggered arrangement of the axes desirably will increase towards the end of the registering station or, if desired, the axes also may be offset with respect to each other only at the end of the registering station.
  • the offset arrangement of the axis of one roller of the roller pair as compared to the axis of the other roller thereof will be, for example, from 10 to 20 percent of the roller diameter at least toward the end of the registering station.
  • Either the lower roller or the upper roller may be prepositioned, or arranged ahead, in the traveling direction of the sieve.
  • the present invention is suitable primarily for the removal of water from or for the dehydration of cellulose or similar fibrous materials, but it also may be employed for the dehydration of non-fibrous materials, such as mud, for example, or foodstuffs.
  • FIG. 1 is a view of a cellulose dehydrating machine
  • FIG. 2 illustrates the registering station of this machine at an enlarged scale
  • FIG. 3 illustrates the mounting of one pair of rollers at a still larger scale.
  • the fibrous material to be dehydrated, or freed from water is conveyed or fed between two endless sieves, the lower sieve 1 and the upper sieve 2, to the cellulose dehydrating machine.
  • Reference numeral 3 identifies the sheet of material to be dehydrated.
  • the sheet of material 3 passes first through the wet station A in which the water is suctioned off, and then passes into the registering station B in which a first squeezing out of the moisture takes place between roller pairs. Thereafter, the material passes into the preliminary pressing or squeezing station C where a further squeezing out of the water is effected between roller pairs. In the subsequent main pressing or squeezing station D, the liquid is squeezed out between two rollers, under a great amount of pressure, up to a permissible residual part.
  • FIG. 2 illustrates the registering station at an enlarged scale.
  • the sheet of material 3 enclosed between the sieves 1 and 2 passes between the roller pairs 6, 7, 8, 9, 10 and 11 of the registering station B.
  • the thickness of the sheet of material decreases progressively so that the dehydration and pressing effect continues.
  • the roller axes are still positioned approximately within a vertical plane 12 at a right angle to the traveling or operating direction of the sieves 1 and 2.
  • the plane 13 which is vertical with respect to the traveling or operating direction of the sieve, as indicated by the arrow 17, and in which the axis of the lower roller II is positioned, is offset ahead in the traveling direction of the sieve, as compared with and with respect to the plane 14 which is vertical with respect to the traveling direction of the sieve and in which the axis of the upper roller 11" is positioned.
  • the degree of the forward staggered arrangement has been designated with reference symbol a.
  • the axis of the lower roller is shifted or offset ahead as compared to the axis of the upper roller also in the preceding roller pairs, but this forward offset arrangement decreases toward the roller pair 6.
  • each of said stations is provided with at least one pair of horizontally-disposed upper and lower rollers, respectively, between which a sheet or web of material to be dehydrated passes and at least one of said upper rollers and said lower rollers in all of said stations is enclosed by a sieve band
  • the improvement comprising a plurality of pairs of rollers fixedly mounted in said registering station, with respect to said material to be dehydrated, and the upper and lower of each of said pairs of rollers are offset from one another progressively greater distances from the entrance end toward the exit end of said registering station, with respect to the direction of travel of said material to be dehydrated through said device.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Filtration Of Liquid (AREA)
US00238414A 1971-04-05 1972-03-27 Pressing device for the removal of water from cellulose or the like Expired - Lifetime US3796148A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT289271A AT313045B (de) 1971-04-05 1971-04-05 Presse für die Entwässerung von Stoffen, insbesondere Zellstoff od.dgl. Fasermaterial

Publications (1)

Publication Number Publication Date
US3796148A true US3796148A (en) 1974-03-12

Family

ID=3541944

Family Applications (1)

Application Number Title Priority Date Filing Date
US00238414A Expired - Lifetime US3796148A (en) 1971-04-05 1972-03-27 Pressing device for the removal of water from cellulose or the like

Country Status (7)

Country Link
US (1) US3796148A (de)
JP (1) JPS5123602B1 (de)
AT (1) AT313045B (de)
CA (1) CA963722A (de)
CH (1) CH531360A (de)
DD (1) DD94940A5 (de)
IT (1) IT952271B (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4681659A (en) * 1982-10-12 1987-07-21 Maschinenfabrik Andritz Actiengesellschaft Multi-nip high pressure press
US5456832A (en) * 1993-12-28 1995-10-10 Komline-Sanderson Engineering Corp. Apparatus for preparing a material for high pressure deliquification
WO1997042374A1 (en) * 1996-05-06 1997-11-13 Beloit Technologies, Inc. Pulp and linerboard former with improved dewatering
US6248245B1 (en) 1998-05-29 2001-06-19 Ashbrook Corporation Belt press with adjustable inlet guide
US20080274017A1 (en) * 2007-05-04 2008-11-06 Boykin Jack W System for the production of synthetic fuels
US20100032384A1 (en) * 2008-08-07 2010-02-11 William Harris Moss Method for improving belt press dewatering
US9333468B2 (en) 2012-09-24 2016-05-10 Abengoa Bioenergy New Technologies, Llc Soak vessels and methods for impregnating biomass with liquid

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT340331B (de) * 1975-05-14 1977-12-12 Andritz Ag Maschf Presse fur die entwasserung von stoffen, insbesondere fasermaterial
DE59203943D1 (de) * 1991-04-30 1995-11-16 Huyck Austria Siebbandpresse bzw. Manchon.

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US403744A (en) * 1889-05-21 Joseph t
US502523A (en) * 1893-08-01 Press
US714679A (en) * 1902-02-27 1902-12-02 Levi B Eberly Belt-and-roller press.
US1483562A (en) * 1921-02-14 1924-02-12 Karlstad Mekaniska Ab Rotary pressing apparatus
US2783689A (en) * 1954-02-22 1957-03-05 Helge N Skoldkvist Arrangement for removing of water in press section of machines for forming a felted pulp web
US3098788A (en) * 1961-04-18 1963-07-23 Beloit Iron Works Liquid removal means for rotatable perforated shells
US3274924A (en) * 1965-11-29 1966-09-27 Walker Douglas Pringle Apparatus for dewatering pulpy material

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US403744A (en) * 1889-05-21 Joseph t
US502523A (en) * 1893-08-01 Press
US714679A (en) * 1902-02-27 1902-12-02 Levi B Eberly Belt-and-roller press.
US1483562A (en) * 1921-02-14 1924-02-12 Karlstad Mekaniska Ab Rotary pressing apparatus
US2783689A (en) * 1954-02-22 1957-03-05 Helge N Skoldkvist Arrangement for removing of water in press section of machines for forming a felted pulp web
US3098788A (en) * 1961-04-18 1963-07-23 Beloit Iron Works Liquid removal means for rotatable perforated shells
US3274924A (en) * 1965-11-29 1966-09-27 Walker Douglas Pringle Apparatus for dewatering pulpy material

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4681659A (en) * 1982-10-12 1987-07-21 Maschinenfabrik Andritz Actiengesellschaft Multi-nip high pressure press
US5456832A (en) * 1993-12-28 1995-10-10 Komline-Sanderson Engineering Corp. Apparatus for preparing a material for high pressure deliquification
US5543044A (en) * 1993-12-28 1996-08-06 Komline- Sanderson Engineering Corp. Apparatus for preparing a material for high pressure deliquification
US5545333A (en) * 1993-12-28 1996-08-13 Komline-Sanderson Engineering Corp. Method for preparing a material for high pressure deliquification
WO1997042374A1 (en) * 1996-05-06 1997-11-13 Beloit Technologies, Inc. Pulp and linerboard former with improved dewatering
US5783045A (en) * 1996-05-06 1998-07-21 Beloit Technologies, Inc. Pulp and linerboard former with improved dewatering
US6248245B1 (en) 1998-05-29 2001-06-19 Ashbrook Corporation Belt press with adjustable inlet guide
US6454102B2 (en) 1998-05-29 2002-09-24 Ashbrook Corporation Belt press with adjustable inlet guide
US20080274017A1 (en) * 2007-05-04 2008-11-06 Boykin Jack W System for the production of synthetic fuels
US20100032384A1 (en) * 2008-08-07 2010-02-11 William Harris Moss Method for improving belt press dewatering
US7964105B2 (en) * 2008-08-07 2011-06-21 William Harris Moss Method for improving belt press dewatering
US9333468B2 (en) 2012-09-24 2016-05-10 Abengoa Bioenergy New Technologies, Llc Soak vessels and methods for impregnating biomass with liquid

Also Published As

Publication number Publication date
CH531360A (de) 1972-12-15
CA963722A (en) 1975-03-04
DE2150813B2 (de) 1975-11-27
JPS5123602B1 (de) 1976-07-17
DE2150813A1 (de) 1972-10-19
AT313045B (de) 1974-01-25
IT952271B (it) 1973-07-20
DD94940A5 (de) 1973-01-05

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STCF Information on status: patent grant

Free format text: PATENTED FILE - (OLD CASE ADDED FOR FILE TRACKING PURPOSES)

AS Assignment

Owner name: ARUS ANDRITZ-RUTHNER, INC., ROBINSON PLAZA, BUILDI

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MASCHINENFABRIK ANDRITZ ACTIENGESELLSCHAFT;REEL/FRAME:004610/0431

Effective date: 19860919

Owner name: ARUS ANDRITZ-RUTHNER, INC., ROBINSON PLAZA, BUILDI

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:MASCHINENFABRIK ANDRITZ ACTIENGESELLSCHAFT;REEL/FRAME:004610/0431

Effective date: 19860919

AS Assignment

Owner name: ANDRITZ-RUTHNER, INC.

Free format text: CHANGE OF NAME;ASSIGNOR:ARUS ANDRITZ-RUTHNER, INC.;REEL/FRAME:005584/0302

Effective date: 19880921