EP1813714A1 - Rouleau de presse à sabot - Google Patents

Rouleau de presse à sabot Download PDF

Info

Publication number
EP1813714A1
EP1813714A1 EP06123727A EP06123727A EP1813714A1 EP 1813714 A1 EP1813714 A1 EP 1813714A1 EP 06123727 A EP06123727 A EP 06123727A EP 06123727 A EP06123727 A EP 06123727A EP 1813714 A1 EP1813714 A1 EP 1813714A1
Authority
EP
European Patent Office
Prior art keywords
shoe
press
elements
roll according
return means
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.)
Granted
Application number
EP06123727A
Other languages
German (de)
English (en)
Other versions
EP1813714B1 (fr
Inventor
Christian Müller
Gerd Komposch
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.)
Voith Patent GmbH
Original Assignee
Voith Patent GmbH
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 Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP1813714A1 publication Critical patent/EP1813714A1/fr
Application granted granted Critical
Publication of EP1813714B1 publication Critical patent/EP1813714B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D21F3/0209—Wet presses with extended press nip
    • D21F3/0218—Shoe presses
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/006—Calenders; Smoothing apparatus with extended nips

Definitions

  • the invention relates to a shoe press roll for dewatering or smoothing a paper, cardboard, tissue or another fibrous web in a machine for producing and / or finishing the same with a stationary support body and a rotatable about this, flexible roll shell of a press shoe hydraulically to a mating roll can be pressed, wherein the press shoe is mounted radially displaceably on the support body and return means for retracting the press shoe of the backing roll are present.
  • Such return means are for example from the DE 19514142 known and should withdraw this in the absence of contact pressure of the press shoe.
  • the object of the invention is therefore to enable the retrieval of the press shoe with improved line force profile.
  • the object has been achieved in that the return means can be deactivated during the contact pressure of the press shoe.
  • the pressing of the press shoe should be done via a plurality of axially juxtaposed and preferably separately controllable hydraulic elements.
  • the return means should engage outside of the hydraulic elements on the support body and on the press shoe.
  • a simple construction of the return means results when the return means are formed by spring elements whose effective direction preferably extends approximately perpendicular to the press shoe.
  • the spring elements for retrieving the press shoe should be frictionally connected to the press shoe or elements attached thereto.
  • the spring elements should radially extending tension elements, in particular in the form of tie rods, cables o.ä. include, the press shoe facing the ends are preferably hingedly connected to the press shoe.
  • the spring elements are designed as helical springs whose opposite ends of the press shoe are each positively positively supported via a coupling element to a stop of the corresponding tension element.
  • the coupling elements can in a simple design of discs, plates o.ä. are formed, which are arranged between stop and spring.
  • the coupling elements controls that they can move away from the stop of the corresponding tension element to separate the non-positive connection of the spring element on the tension element with the press shoe. If the tension element is designed as a rope, this leads to the relaxation of the rope.
  • the controls are preferably designed as hydraulic pressing elements that press the coupling elements for deactivating the return means to the spring elements and clamp them so.
  • the fibrous web 7 is guided in manufacturing machines, such as paper machines alone or together with at least one band through one or more press nips.
  • the flexible roll shell 6 of a shoe press roll is often pressed by a press shoe 3 with a concave press surface against a cylindrical counter roll 8.
  • the longer residence time of the fibrous web 7 in the extended press nip allows an intensive yet gentle treatment of the fibrous web 7 without the risk of overpressing and thus an excessive volume reduction.
  • the shoe press roll has a stationary, axially extending support body 1, around which the roll shell 6 rotates.
  • the pressing of the radially displaceably mounted on the support body 1 press shoe 3 is usually carried out, as seen in Figure 2, via a plurality of axially juxtaposed hydraulic elements 2. However, if necessary, in the circumferential direction a plurality of hydraulic elements 2 are arranged one behind the other.
  • the spring elements 4 also comprise radially extending tension elements 5 in the form of tie rods whose ends facing the press shoe 3 are articulated to the Press shoe 3 are connected.
  • the tension rods as shown in Figure 1, each pass through the coil springs.
  • a spring element 4 with associated tension rod For safe retrieval of the press shoe 3 is here in the circumferential direction before and after each hydraulic element 2, a spring element 4 with associated tension rod.
  • each hydraulic element 2 only one spring element 4 or more hydraulic elements 2, one or more common spring elements 4 are assigned.
  • the coupling elements 9 are designed as a plate which is assigned to each hydraulic element 2, wherein both tension rods of the hydraulic element 2 are guided by this.
  • the spring elements 4 can relax while the press shoe 3 is being returned.
  • the spring elements 4 are based on the support body 1 and via the coupling element 9 on the stop 11.
  • a control element 10 in the form of a hydraulic pressing element engages on the respective coupling element 9, which presses the coupling element 9 towards the spring elements 4 and thus biases them.

Landscapes

  • Paper (AREA)
  • Press Drives And Press Lines (AREA)
  • Rolls And Other Rotary Bodies (AREA)
EP06123727A 2006-01-27 2006-11-09 Rouleau de presse à sabot Not-in-force EP1813714B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006003888A DE102006003888A1 (de) 2006-01-27 2006-01-27 Schuhpresswalze

Publications (2)

Publication Number Publication Date
EP1813714A1 true EP1813714A1 (fr) 2007-08-01
EP1813714B1 EP1813714B1 (fr) 2008-10-08

Family

ID=37772577

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06123727A Not-in-force EP1813714B1 (fr) 2006-01-27 2006-11-09 Rouleau de presse à sabot

Country Status (3)

Country Link
EP (1) EP1813714B1 (fr)
AT (1) ATE410546T1 (fr)
DE (2) DE102006003888A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19514142C1 (de) * 1995-04-15 1996-07-11 Voith Sulzer Papiermasch Gmbh Preßvorrichtung für eine Papiermaschine
US6158333A (en) * 1998-12-16 2000-12-12 Valmet Corporation Method and apparatus for calendering paper
WO2002040771A1 (fr) * 2000-11-20 2002-05-23 Metso Paper Karlstad Ab Procede et appareil de protection d'une chemise des rupture de la bande dans une ligne de contact d'un rouleau presseur a sabot chaud

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19514142C1 (de) * 1995-04-15 1996-07-11 Voith Sulzer Papiermasch Gmbh Preßvorrichtung für eine Papiermaschine
US6158333A (en) * 1998-12-16 2000-12-12 Valmet Corporation Method and apparatus for calendering paper
WO2002040771A1 (fr) * 2000-11-20 2002-05-23 Metso Paper Karlstad Ab Procede et appareil de protection d'une chemise des rupture de la bande dans une ligne de contact d'un rouleau presseur a sabot chaud

Also Published As

Publication number Publication date
DE102006003888A1 (de) 2007-08-02
EP1813714B1 (fr) 2008-10-08
ATE410546T1 (de) 2008-10-15
DE502006001736D1 (de) 2008-11-20

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