WO2002070817A1 - Dewattering device in a paper machine or equivalent - Google Patents

Dewattering device in a paper machine or equivalent Download PDF

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Publication number
WO2002070817A1
WO2002070817A1 PCT/FI2002/000178 FI0200178W WO02070817A1 WO 2002070817 A1 WO2002070817 A1 WO 2002070817A1 FI 0200178 W FI0200178 W FI 0200178W WO 02070817 A1 WO02070817 A1 WO 02070817A1
Authority
WO
WIPO (PCT)
Prior art keywords
guide elements
wire
dewatering device
suction box
fabric guide
Prior art date
Application number
PCT/FI2002/000178
Other languages
French (fr)
Other versions
WO2002070817A8 (en
Inventor
Antti Poikolainen
Original Assignee
Metso Paper, Inc.
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 Metso Paper, Inc. filed Critical Metso Paper, Inc.
Publication of WO2002070817A1 publication Critical patent/WO2002070817A1/en
Publication of WO2002070817A8 publication Critical patent/WO2002070817A8/en

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F9/00—Complete machines for making continuous webs of paper
    • D21F9/02—Complete machines for making continuous webs of paper of the Fourdrinier type
    • 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
    • D21F1/48—Suction apparatus
    • 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
    • D21F1/48—Suction apparatus
    • D21F1/50—Suction boxes with rolls
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F9/00—Complete machines for making continuous webs of paper
    • D21F9/003—Complete machines for making continuous webs of paper of the twin-wire type

Definitions

  • the invention relates to a dewatering device in a paper machine or equivalent.
  • Suction boxes are used in connection with formers, a pulp web being arranged to run between wires over the suction zone of the suction box.
  • the run of the web is made curved in a desired manner by means of different curved blade-shoe shapes, in which connection the removal of water can be affected not only by fabric tension but also by centrifugal force and suction.
  • the state-of-the-art suction boxes use stationary foil blades, so that there is a vacuum between the foils. Stationary foil blades wear wires through friction and the foil blades also wear for this reason. The friction also increases the drive power needed for moving the wires. When a combination of a loading element and a suction box is used, the wear of wires and the drive power become still greater.
  • This patent application proposes using a meandering path for a pulp web to enhance dewatering.
  • it is an object to form a dewatering unit in a twin-wire area, in which connection dewatering pressure is formed by fabric tension and centrifugal force. The effect of both of the above-noted forces increases with increasing machine speeds.
  • the patent application proposes using in dewatering not only the vacuum of the suction box but also the adjustable curvature of the web path. By adjustment of the curvature of the web path it is possible to affect not only fabric tension but also the centrifugal force acting on the web and, thus, the removal of water from the pulp web.
  • dewatering is arranged to take place specifically at a suction box such that the suction box used is of a kind in which, between blade shoes or fabric guide elements, second guide elements are arranged to act on the other side of the web, which second guide elements can be loaded and moved in accordance with the invention.
  • the guide elements used are also guide elements which are rollers or equivalent and thus arranged to rotate and to reduce friction. In that connection, wear of wires is substantially reduced and the drive power required for rotating the wires decreases.
  • the rollers may be advantageously mounted by bearings hydrodynamically, electrically or magnetically.
  • the second guide elements which can be loaded and adjusted in position are located between the first guide elements.
  • dewatering can be controlled over the length of the suction box by affecting the guide elements and, thus, the run path of the web, thus making it a meandering path.
  • the guide elements produce pulsating dewatering of the web, which is enhanced by the vacuum of the suction box.
  • the fines distribution in the web can be effectively influenced by means of the magnitude of the vacuum.
  • the dewatering device of the invention in a paper machine or equivalent is characterized by the disclosure in the claims.
  • Figure 1A illustrates a former in accordance with the invention, which former comprises loaded second guide elements in accordance with the invention, by means of which elements the web is caused to run along a meandering path at a suction box.
  • Figure IB shows loading elements of second fabric guide elements, which loading elements comprise cylinder devices in this embodiment.
  • the former type is different from that of the embodiment of Fig. 1A.
  • Stock is supplied onto a wire H 2 and only after that is a pulp web W passed into a gap between wires Hi and H .
  • Figure 1C shows the area A from Fig. IB on an enlarged scale.
  • Figure 2 illustrates a meandering path of the pulp web W produced by means of the device arrangement in accordance with the invention.
  • the illustration is an enlargement of the area Ai in Fig. 1 A.
  • Figure 3 shows one advantageous position for a dewatering device in accordance with the invention in a former of a third type.
  • Figure 4 shows a dewatering device in accordance with the invention in a hybrid former.
  • Fig. 1A shows an embodiment of the invention in a former 100, in which the former comprises forming wires Hi and H and a dewatering device 10 in accordance with the invention.
  • Stock is introduced into a gap between the wires Hi and H 2 as shown by the arrow Fi.
  • the former 100 comprises a wire loop formed by the upper fo ⁇ ning wire Hi, and wire guide rolls Eei, Ee , E ) as well as a dewatering roll E 4 .
  • the second forming wire H 2 forms a wire loop and comprises inside it wire guide rolls Di, D 2 , D 3 and D 4 , as well as a roll D 5 on the outside.
  • a suction box 110 Inside the wire loop formed by the wire H there is a suction box 110.
  • the dewatering device 10 comprises a suction box 11 inside the wire loop of the first wire Hi.
  • the suction box 11 comprises in its connection compartments Si, S 2 , S 3 and S , the vacuum of which can be regulated, in which connection between the compartments there are fabric guide elements 12a l5 12a 2 , 12a 3 , 12a 4 and 12a 5 , advantageously rollers 12a l5 12a 2 ... mounted rotatably in bearings.
  • the rollers 12a l5 12a 2 ... are preferably mounted by means of bearings to rotate in roller cradles 13a ⁇ , 13a 2 ..., and the bearing arrangement is advantageously hydrodynamic.
  • the equipment comprises inside the wire loop of the second wire H second fabric guide elements 14ai, 14a 2 , 14a 3 and 14a , advantageously loaded elements comprising second backing parts, advantageously rollers 15ai, 15a , 15a 3 , 15a arranged to rotate and mounted in bearings.
  • the rollers 15a ⁇ , 15a ... are so grouped that, for example, the roller 15a ⁇ is located in the middle of the distance between the guide elements 12a ⁇ , 12a 2 .
  • the roller 15a 2 is located in the middle of the distance between the guide elements 12a 2 and 12a 3 , etc.
  • Fig. IB shows a dewatering device in accordance with the invention in connection with another type of former 200.
  • Fig. IC shows an enlargement of the area A 2 from Fig. IB.
  • Figs. IB and IC show a dewatering device of second guide elements 14a ⁇ , 14a ...in connection with the former type 200, in which stock is passed, as shown by the arrow Fi, onto a lower forming wire H 2 and a pulp web W is passed with the forming wire H into a gap between the wires H and Hi.
  • the guide rolls of the wire Hi are designated by Ei, E 2 and E 3 .
  • a suction box 11 is similar to that of the embodiment shown in Fig. 1A and so is the structure of the second fabric guide elements 14a ⁇ , 14a 2 ... in accordance with the invention. Loading elements 16a ⁇ , 16a 2 ... of the second fabric guide elements 14a ⁇ , 14a 2 ... are described in greater detail based on Figs.
  • FIG. IB and IC show an embodiment of the invention in which the second guide elements 14a ⁇ , 14a 2 ... comprise the loading devices 16a ⁇ , 16a ... In this embodiment, the loading devices 16a ⁇ , 16a ...
  • each cylinder device comprising a cylinder frame 17 and a cylinder arm 18 disposed inside it as well as a piston 19 in it.
  • Attached to the cylinder arm 18 is a cradle 20 in which, for example, a guide element 15a ⁇ , such as a roller, is arranged to rotate.
  • the bearing arrangement between the guide element 15a ⁇ and the cradle 20 is hydrodynamic.
  • a similar arrangement is provided in the case of the second fabric guide element 15a 2 .
  • the pulp web W can be pressed, as desired, towards compartments Si and S in the suction box 11.
  • the run of the fabrics, such as the wires Hi and H 2 the pulp web W can be made curved in a desired manner, and dewatering can be controlled over the entire length of the suction box 11 by affecting the curvature of the wires/web Hi, W, H 2 and the tension of the wires Hi and H 2 .
  • the loading devices 16a ⁇ , 16a ..., when comprising cylinder devices, can be, for example, pneumatically operated.
  • Fig. 2 shows the area A from Fig. 1 A on an enlarged scale.
  • the pulp web W and the wires Hi and H 2 run along a meandering path.
  • the pulp web W runs between the wires Hi and H 2 along a meandering path.
  • FIG. 3 shows one arrangement in accordance with the invention in a former 300, in which stock is sprayed, as shown by the arrow Fi, between wires Hi and H in the area of a dewatering roll E 4 , which is followed by a curved blade shoe Pi. Water is removed from the pulp web W by means of the curved blade shoe Pi, and the blade shoe Pi is followed by a dewatering device 10 in accordance with the invention for increasing the solids content of the web.
  • Fig. 4 shows one arrangement in accordance with the invention in a hybrid former 400, in which in a twin wire zone there is a combination P 2 of a loading element and a suction box, by means of which water is removed from the pulp web W and the properties of the web are affected. After this there is a dewatering device 10 in accordance with the invention for increasing the solids content of the pulp web W before it is transferred to a press section.

Abstract

The invention relates to a dewatering device (10) in a paper machine or equivalent. The dewatering device comprises a suction box (11) including guide elements (12a, 12a, 12a3...) for a fabric (H1, H2), such as a wire, so that a pulp web (W) is arranged to run between the wires (H1 and H2) and the wire (H1) is arranged to run conforming to the guide elements (12a1, 12a2...) located in the suction box (11). The dewatering device (10) comprises second fabric guide elements (14a1, 14a2...) in the vicinity of the second wire (H2). Said fabric guide elements (14a1, 14a2...) are arranged to be movable towards and away from the wires/web (H1, W, H2) by means of loading devices (16a1, 16a2...).

Description

Dewatering device in a paper machine or equivalent
The invention relates to a dewatering device in a paper machine or equivalent.
Suction boxes are used in connection with formers, a pulp web being arranged to run between wires over the suction zone of the suction box. The run of the web is made curved in a desired manner by means of different curved blade-shoe shapes, in which connection the removal of water can be affected not only by fabric tension but also by centrifugal force and suction. The state-of-the-art suction boxes use stationary foil blades, so that there is a vacuum between the foils. Stationary foil blades wear wires through friction and the foil blades also wear for this reason. The friction also increases the drive power needed for moving the wires. When a combination of a loading element and a suction box is used, the wear of wires and the drive power become still greater.
This patent application proposes using a meandering path for a pulp web to enhance dewatering. In particular, it is an object to form a dewatering unit in a twin-wire area, in which connection dewatering pressure is formed by fabric tension and centrifugal force. The effect of both of the above-noted forces increases with increasing machine speeds.
The patent application proposes using in dewatering not only the vacuum of the suction box but also the adjustable curvature of the web path. By adjustment of the curvature of the web path it is possible to affect not only fabric tension but also the centrifugal force acting on the web and, thus, the removal of water from the pulp web.
In accordance with the invention, dewatering is arranged to take place specifically at a suction box such that the suction box used is of a kind in which, between blade shoes or fabric guide elements, second guide elements are arranged to act on the other side of the web, which second guide elements can be loaded and moved in accordance with the invention. Advantageously, the guide elements used are also guide elements which are rollers or equivalent and thus arranged to rotate and to reduce friction. In that connection, wear of wires is substantially reduced and the drive power required for rotating the wires decreases. The rollers may be advantageously mounted by bearings hydrodynamically, electrically or magnetically. In accordance with the invention, the second guide elements which can be loaded and adjusted in position are located between the first guide elements. In that connection, dewatering can be controlled over the length of the suction box by affecting the guide elements and, thus, the run path of the web, thus making it a meandering path. The guide elements produce pulsating dewatering of the web, which is enhanced by the vacuum of the suction box. The fines distribution in the web can be effectively influenced by means of the magnitude of the vacuum.
The dewatering device of the invention in a paper machine or equivalent is characterized by the disclosure in the claims.
In the following, the invention will be described with reference to some advantageous embodiments of the invention illustrated in the figures of the appended drawings, but the invention is not meant to be exclusively confined to these embodiments.
Figure 1A illustrates a former in accordance with the invention, which former comprises loaded second guide elements in accordance with the invention, by means of which elements the web is caused to run along a meandering path at a suction box.
Figure IB shows loading elements of second fabric guide elements, which loading elements comprise cylinder devices in this embodiment. The former type is different from that of the embodiment of Fig. 1A. Stock is supplied onto a wire H2 and only after that is a pulp web W passed into a gap between wires Hi and H .
Figure 1C shows the area A from Fig. IB on an enlarged scale.
Figure 2 illustrates a meandering path of the pulp web W produced by means of the device arrangement in accordance with the invention. The illustration is an enlargement of the area Ai in Fig. 1 A.
Figure 3 shows one advantageous position for a dewatering device in accordance with the invention in a former of a third type.
Figure 4 shows a dewatering device in accordance with the invention in a hybrid former.
Fig. 1A shows an embodiment of the invention in a former 100, in which the former comprises forming wires Hi and H and a dewatering device 10 in accordance with the invention. Stock is introduced into a gap between the wires Hi and H2 as shown by the arrow Fi. As shown in Fig. 1A, the former 100 comprises a wire loop formed by the upper foπning wire Hi, and wire guide rolls Eei, Ee , E ) as well as a dewatering roll E4. Similarly, the second forming wire H2 forms a wire loop and comprises inside it wire guide rolls Di, D2, D3 and D4, as well as a roll D5 on the outside. Inside the wire loop formed by the wire H there is a suction box 110. The dewatering device 10 comprises a suction box 11 inside the wire loop of the first wire Hi. The suction box 11 comprises in its connection compartments Si, S2, S3 and S , the vacuum of which can be regulated, in which connection between the compartments there are fabric guide elements 12al5 12a2, 12a3, 12a4 and 12a5, advantageously rollers 12al5 12a2... mounted rotatably in bearings. The rollers 12al5 12a2... are preferably mounted by means of bearings to rotate in roller cradles 13aι, 13a2..., and the bearing arrangement is advantageously hydrodynamic. The equipment comprises inside the wire loop of the second wire H second fabric guide elements 14ai, 14a2, 14a3 and 14a , advantageously loaded elements comprising second backing parts, advantageously rollers 15ai, 15a , 15a3, 15a arranged to rotate and mounted in bearings. The rollers 15aι, 15a ... are so grouped that, for example, the roller 15aι is located in the middle of the distance between the guide elements 12aι, 12a2. The roller 15a2 is located in the middle of the distance between the guide elements 12a2 and 12a3, etc. By means of said second loading elements 14al5 14a2..., the wires Hi, H2 and the pulp web W conveyed between them are pressed towards the suction box 11, thereby causing the run of the web W to meander and thus to become curved and, in the dewatering of the pulp web, it is possible to utilize the centrifugal force acting on the pulp web in the curved runs of the web.
Fig. IB shows a dewatering device in accordance with the invention in connection with another type of former 200. Fig. IC shows an enlargement of the area A2 from Fig. IB.
Figs. IB and IC show a dewatering device of second guide elements 14aι, 14a ...in connection with the former type 200, in which stock is passed, as shown by the arrow Fi, onto a lower forming wire H2 and a pulp web W is passed with the forming wire H into a gap between the wires H and Hi. The guide rolls of the wire Hi are designated by Ei, E2 and E3. A suction box 11 is similar to that of the embodiment shown in Fig. 1A and so is the structure of the second fabric guide elements 14aι, 14a2... in accordance with the invention. Loading elements 16aι, 16a2... of the second fabric guide elements 14aι, 14a2... are described in greater detail based on Figs. IB and IC. In the former 200 of Figs. IB and IC, the wire H2 is guided over guide rolls Dι, D2, D3, D4 and D5, which guide rolls are located inside the wire loop of the forming wire H2, a second suction box 110 being also located inside the wire loop. The arrow Fj designates the location where stock is passed onto the wire H2. Figs. IB, IC show an embodiment of the invention in which the second guide elements 14aι, 14a2... comprise the loading devices 16aι, 16a ... In this embodiment, the loading devices 16aι, 16a ... are formed of cylinder devices, each cylinder device comprising a cylinder frame 17 and a cylinder arm 18 disposed inside it as well as a piston 19 in it. Attached to the cylinder arm 18 is a cradle 20 in which, for example, a guide element 15aι, such as a roller, is arranged to rotate. The bearing arrangement between the guide element 15aι and the cradle 20 is hydrodynamic. A similar arrangement is provided in the case of the second fabric guide element 15a2. By operating the loading devices 16aι, 16a2..., the fabric guide elements 14aι, 14a ... can be loaded and moved towards and away from the wires/web Hi, W, H . Thus, by operating the loading devices 16aι, 16a ..., the pulp web W can be pressed, as desired, towards compartments Si and S in the suction box 11. By this means, the run of the fabrics, such as the wires Hi and H2, the pulp web W can be made curved in a desired manner, and dewatering can be controlled over the entire length of the suction box 11 by affecting the curvature of the wires/web Hi, W, H2 and the tension of the wires Hi and H2.
The loading devices 16aι, 16a ..., when comprising cylinder devices, can be, for example, pneumatically operated.
Fig. 2 shows the area A from Fig. 1 A on an enlarged scale. The pulp web W and the wires Hi and H2 run along a meandering path. The pulp web W runs between the wires Hi and H2 along a meandering path. By this means, centrifugal force can be directed at the pulp web W as desired and so can desired dewatering and also the desired tension of the wires Hi and H2.
By a paper machine or equivalent is also meant board, soft tissue and pulp drying machines. Fig. 3 shows one arrangement in accordance with the invention in a former 300, in which stock is sprayed, as shown by the arrow Fi, between wires Hi and H in the area of a dewatering roll E4, which is followed by a curved blade shoe Pi. Water is removed from the pulp web W by means of the curved blade shoe Pi, and the blade shoe Pi is followed by a dewatering device 10 in accordance with the invention for increasing the solids content of the web.
Fig. 4 shows one arrangement in accordance with the invention in a hybrid former 400, in which in a twin wire zone there is a combination P2 of a loading element and a suction box, by means of which water is removed from the pulp web W and the properties of the web are affected. After this there is a dewatering device 10 in accordance with the invention for increasing the solids content of the pulp web W before it is transferred to a press section.

Claims

Claims
1. A dewatering device (10) in a paper machine or equivalent, which dewatering device comprises a suction box (11) including guide elements (12aι, 12a , 12a3...) for a fabric (Hi, H2), such as a wire, so that a pulp web (W) is arranged to run between the wires (Hi and H ) and the wire (Hi) is arranged to run conforming to the guide elements (12aι, 12a2...) located in the suction box (11), and which dewatering equipment comprises second fabric guide elements (14aι, 14a ...) in the vicinity of the second wire (H ), which fabric guide elements (14aι, 14a2...) are arranged to be movable towards and away from the wires/web (Hi, W, H2) by means of loading devices (16aι, 16a2...), characterized in that the guide elements (12aι, 12a2...) comprise rollers which are arranged to rotate and which are mounted by means of bearings to rotate in roller cradles (13aι, 13a ...), and the second fabric guide elements (14aι, 14a2...) comprise, as second backing parts, rollers (15aι, 15a2, 15a3...) arranged to rotate.
2. A dewatering device as claimed in claim 1, characterized in that the first fabric guide elements (12aι, 12a2...) are disposed in a former inside a first wire loop formed by the forming wire (Hi) and that the second fabric guide elements (14aι, 14a2...) are disposed in the former inside a wire loop formed by the second forming wire (H2).
3. A dewatering device as claimed in claim 1 or 2, characterized in that the first fabric guide elements (12aι, 12a2...) are disposed in the suction box (11) at the ends of walls defining vacuum compartments (Si, S2, S3) of the suction box or in the vicinity thereof.
4. A dewatering device as claimed in any one of the preceding claims, characterized in that the loading devices (16aι, 16a2...) arranged to move and load the second fabric guide elements (14aι, 14a2...) comprise cylinder devices, each cylinder device comprising a cylinder frame (17) and a cylinder arm (18) inside it and a piston (19) in it, and that attached to the cylinder arm (18) is a cradle (20) in which a fabric guide element (14aι, 14a2...), such as a roller (15al5 15a2...) is located, the bearing arrangement between the guide element (14aι, 14a ...) and the cradle (11a) being hydrodynamic.
A dewatering device as claimed in any one of the preceding claims, characterized in that the second guide elements (14aι, 14a2...) are arranged to be located between the first fabric guide elements (12als 12a2...).
PCT/FI2002/000178 2001-03-08 2002-03-07 Dewattering device in a paper machine or equivalent WO2002070817A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20010463 2001-03-08
FI20010463A FI115538B (en) 2001-03-08 2001-03-08 Dewatering machine in a paper machine or similar

Publications (2)

Publication Number Publication Date
WO2002070817A1 true WO2002070817A1 (en) 2002-09-12
WO2002070817A8 WO2002070817A8 (en) 2003-12-04

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PCT/FI2002/000178 WO2002070817A1 (en) 2001-03-08 2002-03-07 Dewattering device in a paper machine or equivalent

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WO (1) WO2002070817A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003074782A1 (en) * 2002-03-01 2003-09-12 Metso Paper, Inc. Apparatus in the forming of web in a paper machine or the like
EP1947237A2 (en) * 2006-11-21 2008-07-23 Klaus Bartelmuss Device for bracing a filter band, felt band or paper band located in a facility for making paper
EP1947238A2 (en) * 2006-11-21 2008-07-23 Klaus Bartelmuss Device for bracing a filter band, felt band or paper band located in a facility for making paper
US7608165B2 (en) * 2004-02-13 2009-10-27 Metso Paper, Inc. Multi-layer web formation section
US7931777B2 (en) * 2004-02-13 2011-04-26 Metso Paper, Inc. Multi-layer web formation section
US8092691B2 (en) 2009-03-09 2012-01-10 Univenture, Inc. Method and apparatus for separating particles from a liquid
CN108642950A (en) * 2018-05-17 2018-10-12 管庆芬 A kind of paper machine suction flat box

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4243482A (en) * 1978-11-27 1981-01-06 Seppanen Erkki O Forming paper using a curved fin to facilitate web transfer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4243482A (en) * 1978-11-27 1981-01-06 Seppanen Erkki O Forming paper using a curved fin to facilitate web transfer

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003074782A1 (en) * 2002-03-01 2003-09-12 Metso Paper, Inc. Apparatus in the forming of web in a paper machine or the like
US7608165B2 (en) * 2004-02-13 2009-10-27 Metso Paper, Inc. Multi-layer web formation section
US7931777B2 (en) * 2004-02-13 2011-04-26 Metso Paper, Inc. Multi-layer web formation section
EP1947237A2 (en) * 2006-11-21 2008-07-23 Klaus Bartelmuss Device for bracing a filter band, felt band or paper band located in a facility for making paper
EP1947238A2 (en) * 2006-11-21 2008-07-23 Klaus Bartelmuss Device for bracing a filter band, felt band or paper band located in a facility for making paper
EP1947237A3 (en) * 2006-11-21 2009-05-20 Klaus Bartelmuss Device for bracing a filter band, felt band or paper band located in a facility for making paper
EP1947238A3 (en) * 2006-11-21 2009-05-27 Klaus Bartelmuss Device for bracing a filter band, felt band or paper band located in a facility for making paper
US8092691B2 (en) 2009-03-09 2012-01-10 Univenture, Inc. Method and apparatus for separating particles from a liquid
US8286801B2 (en) 2009-03-09 2012-10-16 Univenture, Inc. Method and apparatus for separating particles from a liquid
CN108642950A (en) * 2018-05-17 2018-10-12 管庆芬 A kind of paper machine suction flat box

Also Published As

Publication number Publication date
WO2002070817A8 (en) 2003-12-04
FI115538B (en) 2005-05-31
FI20010463A0 (en) 2001-03-08
FI20010463A (en) 2002-09-09

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