WO1997011224A1 - Dispositif de deshydratation de melanges liquides de matieres fibreuses, notamment de suspensions de cellulose - Google Patents

Dispositif de deshydratation de melanges liquides de matieres fibreuses, notamment de suspensions de cellulose Download PDF

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Publication number
WO1997011224A1
WO1997011224A1 PCT/EP1996/003621 EP9603621W WO9711224A1 WO 1997011224 A1 WO1997011224 A1 WO 1997011224A1 EP 9603621 W EP9603621 W EP 9603621W WO 9711224 A1 WO9711224 A1 WO 9711224A1
Authority
WO
WIPO (PCT)
Prior art keywords
press
unit
transmission device
rolls
dewatering
Prior art date
Application number
PCT/EP1996/003621
Other languages
German (de)
English (en)
Inventor
Wilhelm Mausser
Georg Reck
Original Assignee
Andritz-Patentverwaltungs-Ges. Mbh
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 Andritz-Patentverwaltungs-Ges. Mbh filed Critical Andritz-Patentverwaltungs-Ges. Mbh
Priority to AU69252/96A priority Critical patent/AU6925296A/en
Publication of WO1997011224A1 publication Critical patent/WO1997011224A1/fr

Links

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
    • 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

  • the invention relates to a device for dewatering fiber-liquid mixtures, in particular pulp suspensions, in which a material web between two screens or felts is dewatered, the press section consisting of at least two press units, each comprising two press rolls, between which the material web and the screens or felts are passed through and are connected to the frame of the drainage device.
  • the invention is intended to enable the shortest possible and lightest seating for a corresponding drainage device by means of a correspondingly favorable application of force and arrangement of the pressing units.
  • a press roll of a first press unit is connected to the upper frame and a press roll of the next press unit is connected to the lower frame, and the required press force is applied by means of a force transmission device.
  • the chair can significantly shorten compared to the previous drainage devices.
  • some of the vertical supports between the upper and lower chairs that were previously required can be dispensed with. The machine therefore takes up less space and can also be manufactured more easily and therefore more cost-effectively.
  • a favorable further development of the invention is characterized in that the power transmission device is alternately connected to the upper and lower frames.
  • the force transmission devices of two successive press units can thus be arranged directly above one another in a simple manner, which results in a corresponding saving of space and thereby a shortening of the machine.
  • An advantageous embodiment of the invention is characterized in that the force transmission device is arranged between two articulated press rolls. With this arrangement, only one power transmission device is required, and further savings in space can be achieved with offset rollers.
  • a further advantageous embodiment of the invention is characterized in that hydraulic cylinders are provided as the power transmission device.
  • the contact forces in the individual press units can be adjusted or regulated particularly well.
  • the contact pressure of the other Press unit can be generated by a power transmission device which is connected to both press rolls.
  • a further press unit By arranging a further press unit, a higher dry content of the material web to be dewatered is achieved, whereby the special arrangement of the force transmission device provides a particularly favorable force profile.
  • a favorable development of the invention is characterized in that the diameter of the press roll increases in the web running direction. Due to the increasing diameter, a higher pressing force can be achieved, which leads to higher dry contents of the material web.
  • a particularly advantageous further development of the invention is characterized in that the upper and lower press rolls of a press unit are arranged offset obliquely one above the other in the vertical direction, and the lower press roll of a press unit can be arranged offset in the web running direction with respect to the upper press roll of the press unit. Due to the offset arrangement of the press rolls, pre-rubber or post-rubber effects can be achieved if necessary.
  • FIG. 1 shows the view of an overall machine
  • FIG. 2 shows the detail of FIG
  • Fig. 1 shows a dewatering device with an upper sieve or
  • Felt 2 a lower sieve or felt 3 and a material feed (suspension feed) 4.
  • the suspension is in the area of a
  • Wedge zone i.e. a drainage zone with a wedge shape narrowing cross section, fed and pre-dewatered. This is followed by a zone with a so-called S-guide around the rollers 6 and 7. Then the material web, which is located between the upper wire 2 and the lower wire 3, reaches the press section 8.
  • press units 9, 10, 11, 12 and 13 are provided, each consisting of press rolls 9 ', 9 ", 10' , 10 ", 11 ', 11", 12', 12 "as well as 13 'and 13".
  • the press rolls are connected either to the upper frame 14 or to the lower frame 15.
  • a support 16 is provided for stabilization there is between the upper frame 14 and the lower frame 15 a support 16 is provided.
  • FIG. 2 shows the press section 8, the same elements being provided with the same reference symbols as in FIG. 1.
  • the web consisting of the upper sieve 2 and the lower sieve 3 and the material to be dewatered in between is guided around a lower S-drawing roller 6 and an upper S-drawing roller 7 and then passes into the first pressing unit 9, which consists of an upper pressing roller 9 'and a lower press roll 9 ".
  • the lower press roll 9" is fixedly connected to the lower frame 15.
  • the upper press roll 9 ' can be pivoted about a joint 181 by means of a hydraulic cylinder 171 and can be pressed against the lower press roll 9'.
  • press units 10, 11 and 12 with the fixedly mounted press rolls 10 “, 11” and 12 “and the press rolls 10 ', 11', 12 'which can be pressed on.
  • the latter rolls are by means of hydraulic cylinders 172, 173, 174 about corresponding joints 182 , 183, 184 can be pivoted and pressed against the corresponding press roll.
  • the rolls are arranged alternately, that is to say in the case of press unit 9, the fixed press roll 9 "on the lower frame 15, in the case of press unit 10, the fixed press roll 10" attached to the upper frame 15.
  • the hydraulic cylinders 171 of the first press unit 9 are on the upper frame 14 and the Hydraulic cylinder 172 of the second press unit 10 attached to the lower frame 15.
  • the hydraulic cylinders 173, 174 can be arranged directly one above the other.
  • the shortening of the machine by such an arrangement is about 15%.
  • the diameters of the press rolls 11 ', 11 ", 12', 12" are larger than those of the press rolls 9 ', 9 ", 10' and 10".
  • a further pressing unit 13 is provided at the end of the machine.
  • the hydraulic cylinder 175 is mounted between the mounting of the upper press roll 13 "and the mounting of the lower press roll 13 ', which is pivotably mounted about the joint 184.
  • the axes of the press rolls 9' and 9" are arranged directly vertically one above the other, these are arranged offset in the following press units 10, 11 and 12.
  • the upper press roll is offset in the direction of web travel in order to achieve a post-rubber effect.
  • FIG. 3 shows a detail from FIG. 2 with an alternative arrangement of the hydraulic cylinder, only one hydraulic cylinder 176 being connected between the movably arranged pressure rollers 9 'and 10'.
  • the hydraulic cylinders 171 and 172 shown in FIG. 2 are omitted.
  • this arrangement makes it possible to further shorten the machine.
  • the invention is not limited to the embodiments shown in the drawings.
  • the design of the first drainage part can fundamentally differ from the embodiment shown.
  • an additional device such as fabric tension regulation, fabric cleaning etc. can be designed differently.
  • the individual bearings and joints can also be designed differently or arranged differently.

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  • Paper (AREA)

Abstract

L'invention concerne un dispositif de déshydratation de mélanges liquides de matières fibreuses, notamment de suspensions de cellulose. Selon ce procédé, une bande de matériau est déshydratée entre deux filtres ou feutres (2,3). La partie de pression (8) est constituée d'au moins deux unités de pression (9, 10 ou 11, 12), qui comprennent respectivement deux rouleaux de pression (9', 9', 10', 10', 11', 11', 12', 12') entre lesquels on fait passer la bande de matériau et les filtres ou feutres (2, 3) et qui sont reliés au cadre (14, 15) du dispositif de déshydratation 1. L'invention est caractérisée en ce qu'alternativement un rouleau de pression (9' ou 11') d'une première unité de pression (9 ou 11) est connecté, de façon articulée, au cadre supérieur (14) et un rouleau de pression (10' ou 12') de l'unité de pression suivante (10 ou 12) est connecté, de façon articulée, au cadre inférieur (15) et en ce que la pression nécessaire est appliquée au moyen d'un dispositif de transmission de puissance (171, 172, 173, 174, 176).
PCT/EP1996/003621 1995-09-19 1996-08-16 Dispositif de deshydratation de melanges liquides de matieres fibreuses, notamment de suspensions de cellulose WO1997011224A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU69252/96A AU6925296A (en) 1995-09-19 1996-08-16 Device for dewatering fibre-liquid mixtures, especially cellulose suspensions

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0155095A AT402951B (de) 1995-09-19 1995-09-19 Vorrichtung zur entwässerung von vfaserstoff-flüssigkeitsmischungen,insbesondere zellstoffsuspensionen
ATA1550/95 1995-09-19

Publications (1)

Publication Number Publication Date
WO1997011224A1 true WO1997011224A1 (fr) 1997-03-27

Family

ID=3515817

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1996/003621 WO1997011224A1 (fr) 1995-09-19 1996-08-16 Dispositif de deshydratation de melanges liquides de matieres fibreuses, notamment de suspensions de cellulose

Country Status (3)

Country Link
AT (1) AT402951B (fr)
AU (1) AU6925296A (fr)
WO (1) WO1997011224A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999001610A1 (fr) * 1997-07-01 1999-01-14 Andritz-Patentverwaltungs-Gesellschaft M.B.H. Dispositif pour deshydrater des suspensions a base de solides et de liquides, notamment des suspensions a base de fibres
WO1999001609A1 (fr) * 1997-07-01 1999-01-14 Andritz-Patentverwaltungs-Gesellschaft Mbh Dispositif pour deshydrater des suspensions a base de solides et de liquides, notamment des suspensions a base de fibres
DE19852431B4 (de) * 1997-11-28 2006-01-05 Andritz-Patentverwaltungs-Ges.M.B.H. Anlage zur Bahntrocknung einer Faserstoffbahn
DE10393228B4 (de) * 2002-10-17 2006-07-27 Andritz Ag Pressvorrichtung
WO2010102398A1 (fr) 2009-03-10 2010-09-16 Services Techniques Hds Presse à double toile

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2443352A (en) * 1944-03-11 1948-06-15 Boloit Iron Works Suction press section for paper machines
US2959222A (en) * 1957-06-05 1960-11-08 Beloit Iron Works Pickup and press section
DE1180237B (de) * 1961-01-16 1964-10-22 Karlstad Mekaniska Ab Papiermaschine
GB1085592A (en) * 1964-11-23 1967-10-04 St Annes Board Mill Co Ltd Dewatering watery pulp to form paper, board or tissue
DE1947709A1 (de) * 1968-09-27 1970-04-02 Black Clawson Co Papiermaschine
DE3307362A1 (de) * 1982-03-05 1983-09-08 Valmet Oy, 00130 Helsinki Pressenpartie einer papiermaschine
EP0201443A1 (fr) * 1985-04-26 1986-12-17 Etudes De Machines Speciales De L'ouest Presse à bandes filtrantes
US5091056A (en) * 1987-04-14 1992-02-25 Valmet Paper Machinery Inc. Structural frame for separate nips in a press section

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT375694B (de) * 1982-10-12 1984-08-27 Andritz Ag Maschf Einrichtung an der presspartie von entwaesserungsmaschinen

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2443352A (en) * 1944-03-11 1948-06-15 Boloit Iron Works Suction press section for paper machines
US2959222A (en) * 1957-06-05 1960-11-08 Beloit Iron Works Pickup and press section
DE1180237B (de) * 1961-01-16 1964-10-22 Karlstad Mekaniska Ab Papiermaschine
GB1085592A (en) * 1964-11-23 1967-10-04 St Annes Board Mill Co Ltd Dewatering watery pulp to form paper, board or tissue
DE1947709A1 (de) * 1968-09-27 1970-04-02 Black Clawson Co Papiermaschine
DE3307362A1 (de) * 1982-03-05 1983-09-08 Valmet Oy, 00130 Helsinki Pressenpartie einer papiermaschine
EP0201443A1 (fr) * 1985-04-26 1986-12-17 Etudes De Machines Speciales De L'ouest Presse à bandes filtrantes
US5091056A (en) * 1987-04-14 1992-02-25 Valmet Paper Machinery Inc. Structural frame for separate nips in a press section

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999001610A1 (fr) * 1997-07-01 1999-01-14 Andritz-Patentverwaltungs-Gesellschaft M.B.H. Dispositif pour deshydrater des suspensions a base de solides et de liquides, notamment des suspensions a base de fibres
WO1999001609A1 (fr) * 1997-07-01 1999-01-14 Andritz-Patentverwaltungs-Gesellschaft Mbh Dispositif pour deshydrater des suspensions a base de solides et de liquides, notamment des suspensions a base de fibres
DE19852431B4 (de) * 1997-11-28 2006-01-05 Andritz-Patentverwaltungs-Ges.M.B.H. Anlage zur Bahntrocknung einer Faserstoffbahn
DE10393228B4 (de) * 2002-10-17 2006-07-27 Andritz Ag Pressvorrichtung
DE10393228C5 (de) * 2002-10-17 2013-04-18 Andritz Ag Pressvorrichtung
WO2010102398A1 (fr) 2009-03-10 2010-09-16 Services Techniques Hds Presse à double toile
EP2406427B1 (fr) * 2009-03-10 2017-01-04 Kadant Canada Corp. Presse à double toile

Also Published As

Publication number Publication date
AU6925296A (en) 1997-04-09
ATA155095A (de) 1997-02-15
AT402951B (de) 1997-10-27

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