EP1029976B1 - Rouleau - Google Patents

Rouleau Download PDF

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Publication number
EP1029976B1
EP1029976B1 EP99103084A EP99103084A EP1029976B1 EP 1029976 B1 EP1029976 B1 EP 1029976B1 EP 99103084 A EP99103084 A EP 99103084A EP 99103084 A EP99103084 A EP 99103084A EP 1029976 B1 EP1029976 B1 EP 1029976B1
Authority
EP
European Patent Office
Prior art keywords
roller
condensation
condensation product
riser
fact
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
EP99103084A
Other languages
German (de)
English (en)
Other versions
EP1029976A1 (fr
Inventor
Ludwig Hellenthal
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.)
Walzen Irle GmbH
Original Assignee
Walzen Irle 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 Walzen Irle GmbH filed Critical Walzen Irle GmbH
Priority to AT99103084T priority Critical patent/ATE221154T1/de
Priority to EP99103084A priority patent/EP1029976B1/fr
Publication of EP1029976A1 publication Critical patent/EP1029976A1/fr
Application granted granted Critical
Publication of EP1029976B1 publication Critical patent/EP1029976B1/fr
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
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/02—Rolls; Their bearings
    • D21G1/0253—Heating or cooling the rolls; Regulating the temperature
    • D21G1/0266—Heating or cooling the rolls; Regulating the temperature using a heat-transfer fluid
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F5/00—Dryer section of machines for making continuous webs of paper
    • D21F5/02—Drying on cylinders
    • D21F5/10—Removing condensate from the interior of the cylinders

Definitions

  • the invention relates to a roller according to the preamble of claim 1.
  • rollers are used for machining and processing in tensionable webs processing materials used, for example for textile, plastic and in particular Paper webs.
  • the field of application of such rollers, which in different Dimensioning is therefore the area of industrial production, in particular the coloring, embossing or printing of the above Tracks.
  • the heating is carried out as evenly as possible over the circumference of the roller to avoid thermal stress.
  • Such rollers therefore have special features advantageous peripheral channels, which are distributed side by side over the circumference of the roller are arranged. These essentially follow the axial course of the roller and can vary in number depending on the dimensioning Roll be provided.
  • a heating medium is passed through the channels can be designed differently depending on the application.
  • Particular advantages revealed the use of water vapor as a heating medium since this is a special one ensures uniform heating of the roller body and that in some areas, especially in the coldest places, during the passage condensed by the roller and thereby the liberated during the condensation Releases energy as heating energy to the roller. This ensures a special one uniform heating of the roller.
  • Condensate risers provided this in a central, the pin of the roller penetrating discharge duct. This is a significant one Pressure difference required, that of the centrifugal force acting on the condensate counteracts during the rotation of the roller. This is the condensate drain difficult. In addition, the corresponding condensate risers can become blocked come.
  • Such rollers are for example from the scriptures DE-A-4407239 and EP-A-076 8424 are known.
  • the invention is based on the problem of removing the condensate from the circumferential side Improve heating channels.
  • the number of condensate risers is particularly advantageous compared to the axial ones Channels reduced and the cross-section of the condensate risers enlarged. With the enlarged cross section reduces the risk of blockage of the condensate risers, condensate drainage is faster and more reliable.
  • the injector nozzle is particularly advantageously controllable, so that the respective roller dimensions and / or speed of rotation correspondingly adapted addition of slip steam can occur.
  • the roller 1 is at least one-sided (in the exemplary embodiment on both sides) with flange pins 2 and 3. On at least one the flange pin 2, 3 can attack a drive for the roller 1.
  • the roller 1 has a roller body 4 in the central area, which has the flange pins 2 and 3 facing ends by screwable and heat-insulating Lid 5, 6 can be closed.
  • the roller 1 is over a heating medium, in particular a vaporous heating medium such as water vapor, heatable.
  • a heating medium in particular a vaporous heating medium such as water vapor, heatable.
  • FIG. 2 via the The circumference of the roller body 4 is spaced apart and essentially distributed axially extending channels 8 are provided, through which the heating medium is conducted in order to thus heat the outer surface 4a as well as possible to reach the roller body 4.
  • the axial channels 8 extend almost over the entire length of the roller body 4 and conduct the heating medium, in particular the water vapor, axially to the course of the roller body 4 through it.
  • the condensate that forms is in annular, concentric to the roller axis 9 extending Collection rooms 10, 11, 12, 13 collected, with the collection rooms 10 and 11 on the side of the roller 1 facing the pin 2, which have a discharge channel 16 for the condensate. That collected in the collection rooms 12 and 13 By contrast, condensate is passed through further axial channels 14 of the opposite one Roll side fed. There it becomes in the annular space 11 collected, as well as the collecting space 10 located on the same side is connected to a condensate riser 15.
  • the condensate riser 15 extends in a radial alignment with the central one Condensate drainage duct 16. Therefore, the ring collecting space on this side opens out 10 via an intermediate channel 10a in the condensate riser 15 as well the opposite collection rooms 12, 13 over a second circle lying axial channel 14 and the annular plenum 11. Inside the condensate riser 15 prevails to overcome those acting on the condensate and this centrifugal force pressing against the outer surface 4a of the roller body a pressure difference, with the help of which the condensate has a central effect Experienced force component that allows removal through the central channel 16.
  • the condensate riser 15 is used to supply the slip steam Provide injector nozzle17.
  • the slip vapor becomes concentric over one ring channel 18 lying to the central discharge channel 16 is introduced into the roller, then fed via a riser pipe 19 to a control valve 20 before it Injector nozzle 17 is introduced into the condensate riser.
  • the control valve 20 can either manually or remotely. The amount of slip steam injected can therefore be regulated depending on the speed and the heating medium used become.
  • each of the condensate risers there is a correspondingly acute and the axis 9 of the roller 1 facing orientation an injector nozzle 17 for the Slip vapor.
  • 4 balancing weights 26 can be mounted on the edge of the roller body with the lids 5 and 6 in connection and via adjusting screws or the like can be readjusted at any time. A static as well as dynamic Balancing the roller 1 is thereby facilitated. By changing the Screw-in angle of the screw can result in a corresponding redistribution of the balance weight 26 can be made.
  • a roller 1 designed as a heat exchanger is created, due to the fact that the slip vapor can be fed into the riser pipe 15 and the small number of condensate risers 15 with a single annular plenum 10, with which all heating channels 8 are connected, is connected, an optimized implementation of the heating medium, especially water vapor, enabled by the roller 1.
  • a very even temperature profile is achieved so that the deformation of the roller 1 remains small. Due to the controllability and adjustability via the valve 20, the injection of slip steam depending on Carry out requirements so that its consumption is low and easy to dose is.
  • the problem of a blockage of the condensate return lines due to small cross-sections and the problem of a very high pressure difference to be applied are largely eliminated.

Landscapes

  • Drying Of Solid Materials (AREA)
  • Paper (AREA)

Claims (6)

  1. Cylindre (1) à utiliser pour l'usinage et la transformation de matières à transformer en bandes pouvant être tendues, comme dans l'industrie du papier, le cylindre (1) pouvant recevoir une substance chauffante, en particulier de la vapeur d'eau, qui peut être introduite dans le cylindre (1) et transportée sur l'extension du cylindre par l'intermédiaire de canaux (8) globalement axiaux répartis sur le volume du cylindre, les canaux (8) débouchant au moins à une extrémité dans une cellule collectrice commune de condensation globalement circulaire (10 à 13), à partir de laquelle s'étend au moins un puits de condensation (15) allant jusqu'à un canal axial d'évacuation de condensation (16), caractérisé en ce qu'au puits de condensation (15) est associée une buse à injecteur (17) pour l'introduction de la vapeur perdue dans le puits de condensation (15).
  2. Cylindre selon la revendication 1,
    caractérisé en ce que
    la buse à injecteur (17) est disposée à angle aigu par rapport au puits de condensation (15) et présente une composante axiale au sens d'injection.
  3. Cylindre selon une des revendications 1 ou 2,
    caractérisé en ce que
    le nombre de puits de condensation (15) est réduit par rapport au nombre de canaux axiaux (8).
  4. Cylindre selon une des revendications 1 à 3,
    caractérisé en ce que
    un à quatre puits de condensation (15) sont associés à une cellule collectrice de condensation (10).
  5. Cylindre selon une des revendications 1 à 4,
    caractérisé en ce que
    la buse à injecteur (17) est réglable au niveau de son introduction de vapeur perdue.
  6. Cylindre selon une des revendications 1 à 5,
    caractérisé en ce que
    le cylindre (1) présente un corps de cylindre (4) qui est surmonté sur sa face frontale à au moins une extrémité d'un goujon et que le corps de cylindre (4) est limité sur sa face frontale par des couvercles à isolation thermique (5, 6) pouvant être vissés dessus.
EP99103084A 1999-02-17 1999-02-17 Rouleau Expired - Lifetime EP1029976B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT99103084T ATE221154T1 (de) 1999-02-17 1999-02-17 Walze
EP99103084A EP1029976B1 (fr) 1999-02-17 1999-02-17 Rouleau

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99103084A EP1029976B1 (fr) 1999-02-17 1999-02-17 Rouleau

Publications (2)

Publication Number Publication Date
EP1029976A1 EP1029976A1 (fr) 2000-08-23
EP1029976B1 true EP1029976B1 (fr) 2002-07-24

Family

ID=8237567

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99103084A Expired - Lifetime EP1029976B1 (fr) 1999-02-17 1999-02-17 Rouleau

Country Status (2)

Country Link
EP (1) EP1029976B1 (fr)
AT (1) ATE221154T1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102400409A (zh) * 2011-09-28 2012-04-04 大连明珠机械有限公司 纸机压光机用热压光辊

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4407239A1 (de) * 1994-03-04 1995-09-07 Schwaebische Huettenwerke Gmbh Dampfbeheizte Walze
DE19538236A1 (de) * 1995-10-13 1997-04-17 Schwaebische Huettenwerke Gmbh Heizwalze

Also Published As

Publication number Publication date
ATE221154T1 (de) 2002-08-15
EP1029976A1 (fr) 2000-08-23

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