EP1845189B1 - Procédé destiné à la commande de la température des éléments céramiques d'une barre d'appui ou d'une racleuse dans une installation de production de papier tout comme dispositif et barre d'appui ou racleuse destinés à l'exécution de ce procédé - Google Patents

Procédé destiné à la commande de la température des éléments céramiques d'une barre d'appui ou d'une racleuse dans une installation de production de papier tout comme dispositif et barre d'appui ou racleuse destinés à l'exécution de ce procédé Download PDF

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Publication number
EP1845189B1
EP1845189B1 EP06450181A EP06450181A EP1845189B1 EP 1845189 B1 EP1845189 B1 EP 1845189B1 EP 06450181 A EP06450181 A EP 06450181A EP 06450181 A EP06450181 A EP 06450181A EP 1845189 B1 EP1845189 B1 EP 1845189B1
Authority
EP
European Patent Office
Prior art keywords
supporting
scraper bar
carrier medium
channel
temperature
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.)
Not-in-force
Application number
EP06450181A
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German (de)
English (en)
Other versions
EP1845189A2 (fr
EP1845189A3 (fr
Inventor
Heinz Bartelmuss
Klaus Bartelmuss
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT06450181T priority Critical patent/ATE434682T1/de
Publication of EP1845189A2 publication Critical patent/EP1845189A2/fr
Publication of EP1845189A3 publication Critical patent/EP1845189A3/fr
Application granted granted Critical
Publication of EP1845189B1 publication Critical patent/EP1845189B1/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
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/48—Suction apparatus
    • D21F1/483—Drainage foils and bars

Definitions

  • the subject invention relates to a method for controlling the temperature of the ceramic elements of a support or squeegee, which is assigned in a plant for paper production to the located therein at least one screen belt or at least one felt belt. Furthermore, the invention relates to a device and a support or squeegee for performing this method.
  • Equipment for paper production have at least one screen belt and further at least one felt belt, which are assigned to the two bands in their direction of succession, aligned transversely to the bands supporting strips over which the screen belt and the felt belt are guided.
  • the support strips In a first area of the paper-making plant, the support strips also serve as squeegee strips for the liquids emerging from the paper pulp and passing through the sieve belt. Since these Abstützorgn are exposed to large mechanical and corrosive loads, there is a need to provide these on their the Siebb Sn or the felt tapes facing surfaces with plates of a ceramic material to which the screen belt or the felt belt to the plant.
  • the screen belt or the felt belt at very high speeds of e.g. Moved 40 m / sec over the Abstützorgn away.
  • the support strips means for sucking the emerging from the pulp liquids or for sucking air to dry the paper belt resting on the wire belt or for drying the felt belt, whereby the wire belt or the felt on the support bars with very high pressure rest. As a result, frictional forces occur, by which the ceramic elements can be heated strongly.
  • the support strips cool down to the ambient temperature.
  • the paper pulp is sprayed onto the sieve belt, which can have a temperature of up to 90 °.
  • a steam hood can be provided, within which superheated steam is located, which serves to dry the paper tape and through which the ceramic elements can be subjected to temperatures up to 150 ° C. It should also be noted that the ceramic elements of the support or squeegee have a very low thermal conductivity.
  • the ceramic elements of the supporting or wiper strips are subject to very high thermal stresses, which can change within a very short time within a range of about 200 ° C.
  • This control of the operation of the system is characterized in that the support or wiper blades are assigned spray nozzles through which water is sprayed onto the support or squeegee, and that the trained with Abstütz- or squeegee suction boxes are provided with vacuum lines through which of the pressure with which the screen belts abut against the support or wiper strips, can be controlled.
  • the subject invention is therefore based on the object to provide a method by which the individual located in a plant for paper production support or squeegee can be protected from being damaged due to occurring in these thermal stresses.
  • this will According to the invention achieved in that the support or squeegee is formed with at least one channel through which a carrier medium for heat or for cold is passed.
  • a mixing valve is provided in the line leading to the at least one channel, are connected to which lines for carrier media for heat or for cold and which is set to the temperature which should have the respective support or squeegee ,
  • a temperature sensor may be provided in the leading away from the support or squeegee line, by which the temperature of the effluent from the supporting or squeegee carrier medium is measured.
  • a temperature sensor can also be provided in the line leading to the support or stripping bar, by means of which the temperature of the support medium flowing toward the support or stripping bar is measured.
  • the temperature of the carrier medium flowing in toward the support strip or scraper blade is controlled as a function of the temperature of the carrier medium flowing away from it.
  • the carrier medium can be conveyed by means of a feed pump in a self-contained line circuit.
  • the carrier medium flowing away from the supporting or wiper strip can either be conducted via a heating device or via a cooling device, and then the support or wiper strip can be supplied.
  • the heating device or the cooling device can be controlled as a function of the temperature of the carrier medium flowing away from the supporting or wiping strip.
  • the power of the feed pump can be controlled as a function of the temperature of the carrier medium flowing away from the support strip or scraper blade.
  • both the performance of the heating device or of the cooling device and the power of the feed pump can be controlled as a function of the temperature of the carrier medium flowing away from the support or wiper strip.
  • the carrier medium is passed continuously through the supporting or stripping bar, wherein it is in particular passed through the ceramic elements of the supporting or stripping bar.
  • the support or squeegee is formed with at least one channel, are connected to which lines for the support or squeegee inflowing carrier medium and for this flowing from the carrier medium.
  • a mixing valve for carrier media of heat and cold is located in the line leading to the at least one channel.
  • a temperature sensor may be located in the line leading to the support or stripping bar and / or in the line leading away from the support or stiffening bar.
  • a line system in which there are a feed pump, a heater and a cooling device for the carrier medium, wherein at least one temperature sensor for determining the temperature of the effluent from the support or squeegee carrier medium and a control unit for controlling the Benefits of the heater and the cooling device and or or the feed pump are provided.
  • at least one temperature sensor for determining the temperature of the supporting or stripping bar supplied carrier medium may be provided.
  • An inventive support or squeegee for carrying out this method is formed with at least one channel for conducting a carrier medium for heat or for cold.
  • the channel can pass through the ceramic elements.
  • the channel can be located between the ceramic elements and a carrier strip for the ceramic elements.
  • the channel may begin at one end of the support strip and terminate at the other end thereof, or the channel may begin at one end of the support strip and be returned thereto to the same end.
  • the leading channel can be connected to the returning channel within the support or squeegee.
  • the leading channel can be connected to the returning channel via a piece of pipe located outside the support or wiper strip.
  • both the ceramic elements and the carrier strip can be formed with at least one channel or channel pieces.
  • the supporting or stripping strip 1 consists of a carrier strip 1a with ceramic elements 1b fastened thereto, wherein the supporting or stripping strip 1 is formed with two channels 11 and 12. At one end of the support or squeegee 1 close to the mouths of the two channels 11 and 12 connecting pipes 13 and 14 at. At the other end of the support or
  • the two channels 11 and 12 are connected to each other by means of a piece of pipe 15.
  • the output line 23 of a mixing valve 2 is connected, which is supplied via a first connecting line 21, a carrier medium for cold and a second connecting line 22, a carrier medium for heat.
  • a control device 20 the temperature of the dispensed from the mixing valve 2 via the output line 23 carrier medium is set to that value, which temperature value that support or stripping 1 in the system should have, which is fed via the mixing valve 2 with carrier medium.
  • a support or stripping strip 1 located in a certain area of the installation should have. Then the mixing valve 2 is set to this temperature. As a result, this strip 1 is brought to the desired temperature by means of the supporting or stripping 1 via the output line 23 of the mixing valve 2 supplied carrier medium. The effluent from the support or squeegee 1 via the pipe 14, heated or cooled by this carrier medium is discharged via a further line 24 either in a memory or in the channel.
  • temperature sensors 25 and 26 are further provided, by means of which the temperatures of the carrier medium flowing through these lines are detected.
  • the temperature of the respective support or stripping bar 1 can be brought approximately to the desired value in the rule.
  • the support or squeegee 1 is associated with a self-contained line circuit 3 for a carrier medium for heat or cold, in which a memory 30 for the carrier medium, a feed pump 4, a control valve 5, a heater 6 and a cooling device 7 are located. Furthermore, a control unit 8 is provided, which are assigned to two located in the line circuit 3 temperature sensors 81 and 82 and which serve to control the feed pump 4, the control valve 5, the heater 6 and the cooling device 7.
  • temperature sensor 81 located in the line 35 takes place a temperature measurement of the support or stripping 1 inflowing carrier medium and by means of located in the line 36 temperature sensor 82 is a temperature measurement of the effluent from the stripping or scraper 1 medium.
  • the measured values output by the temperature sensors 81 and 82 are transmitted via control lines 83 and 84 to the control unit 8, by means of which the feed pump 4, the control valve 5, the heating device 6 and the cooling device 7 are controlled via control lines 85, 86, 87 and 88.
  • the control valve 5 is redirected to the effect that the carrier medium is supplied by means of the feed pump 4 of the heater 6, in which it is heated, whereupon it is passed via the connecting pipe 13 into the channel 11. This procedure is maintained until the support or squeegee 1 has the required temperature for the particular operating case. Soferne contrast, it is determined by the control unit 8 that the existing in the support or stripping 1 temperature must be reduced, the control valve 5 is redirected to the effect that the carrier medium is fed by means of the pump 4 of the cooling device 7, in which it is cooled , whereupon it is also passed via the connecting pipe 13 into the channel 11. This procedure is also maintained until the support or squeegee 1 has the required temperature for the particular operating case.
  • a further control with regard to the heating or cooling of the supporting or stripping strip 1 can also take place in that the power of the conveying pump 4 is increased or decreased by the control unit 8.
  • Soferne in operation of a plant for paper production by one of the support or squeegee 1 associated control unit 8 is determined that this support or squeegee 1 has a too low or too high temperature for the relevant operating case or too rapid a change in temperature this support or stripping 1 takes place, whereby in each case there is the risk of cracking or fractures of the ceramic elements 1 b of this support or stripping 1, this support or stripping 1 is supplied according to heated or cooled support medium, whereby the ceramic Elements 1b are not exposed to unacceptable thermal loads, thereby preventing damage caused thereby.
  • Fig. 10, 10a and 10b Several embodiments of support or squeegee 1 are shown, which consist of support strips 1a with attached to these plates 1b made of ceramic material and which are formed with channels 11 and 12, which enforce this support or squeegee 1 in the longitudinal direction. These channels can begin at one end of the support or squeegee 1 and end at the other end of the strips 1. Alternatively, these channels may begin at one end of the squeegee 1 and be returned to that end. Furthermore, these channels can pass through the ceramic plates 1 b or be provided in the support bar 1 a or be located between the ceramic plates 1 b and the support bar 1 a. Furthermore, the channels may be formed with different cross sections.
  • the arrangement of the channels within the support or squeegee or the formation of the cross section is of crucial importance to ensure that the targeted by the carrier medium flowing through this Temperature of the plates 1 b made of ceramic material is achieved in order to avoid their damage by thermal stresses.
  • a carrier medium for cold or for heat in particular water is used as a carrier medium for cold or for heat in particular water.

Landscapes

  • Paper (AREA)
  • Tunnel Furnaces (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)
  • Belt Conveyors (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)

Claims (25)

  1. Procédé pour commander la température des éléments céramiques (1b) d'une barre d'appui ou racleuse (1) qui est associée, dans une installation de production de papier, à au moins une bande de tamis située dans celle-ci ou à au moins une bande de feutre, caractérisé en ce que la barre d'appui ou racleuse (1) est pourvue d'au moins un conduit (11, 12) par lequel passe un agent porteur pour la chaleur ou le froid.
  2. Procédé selon la revendication 1, caractérisé en ce qu'il est prévu dans la conduite qui mène audit conduit (11, 12) un régulateur à vannes (2) auquel sont raccordées les conduites (21, 22) pour les agents porteurs pour la chaleur ou pour le froid et qui est réglé à la température que doit présenter la barre d'appui ou racleuse (1) concernée.
  3. Procédé selon l'une des revendications 1 et 2, caractérisé en ce qu'il est prévu dans la conduite (26) qui part de la barre d'appui ou racleuse (1) un capteur de température (15) grâce auquel la température de l'agent porteur sortant de ladite barre d'appui ou racleuse (1) est mesurée.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce qu'il est prévu dans la conduite (23) menant à la barre d'appui ou racleuse (1) un capteur de température (25) grâce auquel la température de l'agent porteur s'écoulant vers ladite barre d'appui ou racleuse (1) est mesurée.
  5. Procédé selon la revendication 1, caractérisé en ce que la température de l'agent porteur qui s'écoule vers la barre d'appui ou racleuse (1) est commandée en fonction de la température de l'agent porteur qui sort de celle-ci.
  6. Procédé selon la revendication 5, caractérisé en ce que l'agent porteur est acheminé à l'aide d'une pompe d'alimentation (4) dans un circuit fermé (3).
  7. Procédé selon l'une des revendications 5 et 6, caractérisé en ce que l'agent porteur qui sort de la barre d'appui ou racleuse (1) passe par un dispositif de chauffage (6) ou par un dispositif de refroidissement (7), puis est amené dans la barre d'appui ou racleuse (1).
  8. Procédé selon la revendication 7, caractérisé en ce que le dispositif de chauffage (6) ou le dispositif de refroidissement (7) est commandé en fonction de la température de l'agent porteur qui sort de la barre d'appui ou racleuse (1).
  9. Procédé selon la revendication 7, caractérisé en ce que la puissance de la pompe d'alimentation (4) est commandée en fonction de la température de l'agent porteur qui sort de la barre d'appui ou racleuse (1).
  10. Procédé selon la revendication 7, caractérisé en ce que la puissance du dispositif de chauffage (6) ou du dispositif de refroidissement (7) et la puissance de la pompe d'alimentation (4) sont commandées en fonction de la température de l'agent porteur qui sort de la barre d'appui ou racleuse (1).
  11. Procédé selon l'une des revendications 1 à 10, caractérisé en ce que l'agent porteur traverse en continu la barre d'appui ou racleuse (1).
  12. Procédé selon l'une des revendications 1 à 11, caractérisé en ce que l'agent porteur traverse en continu les éléments céramiques (1b) de la barre d'appui ou racleuse (1).
  13. Installation pour la mise en oeuvre du procédé selon l'une des revendications 1 à 12, caractérisée en ce que la barre d'appui ou racleuse (1) est pourvue d'au moins un conduit (11, 12) auquel sont raccordées une conduite (13) pour un agent porteur arrivant dans la barre d'appui ou racleuse (1) et une conduite (14) pour un agent porteur sortant de celle-ci.
  14. Installation selon la revendication 13, caractérisée en ce qu'un régulateur à vannes (2) pour les agents porteurs de chaleur et de froid se trouve dans la conduite (23) qui mène audit conduit (11, 12).
  15. Installation selon la revendication 14, caractérisée en ce qu'un capteur de température (25, 26) se trouve dans la conduite (23) qui mène à la barre d'appui ou racleuse (1) et/ou dans la conduite (24) qui part de celle-ci.
  16. Installation selon la revendication 13, caractérisée en ce qu'il est prévu un système de conduites (3) dans lequel se trouvent une pompe d'alimentation (4) pour l'agent porteur, un dispositif de chauffage (6) et un dispositif de refroidissement (7) pour l'agent porteur, et en ce qu'il est également prévu au moins un capteur de température (82) pour déterminer la température de l'agent porteur qui sort de la barre d'appui ou racleuse (1) et une unité de commande (8) pour commander la puissance du dispositif de chauffage (6) et du dispositif de refroidissement (7) et/ou de la pompe d'alimentation (4).
  17. Installation selon la revendication 16, caractérisée en ce qu'il est également prévu au moins un capteur de température (81) pour déterminer la température de l'agent porteur amené dans la barre d'appui ou racleuse (1).
  18. Barre d'appui ou racleuse (1) pour la mise en oeuvre du procédé selon l'une des revendications 1 à 12 ou pour une installation selon l'une des revendications 13 à 17, caractérisée en ce qu'elle est pourvue d'au moins un conduit (11, 12) pour le passage d'un agent porteur pour la chaleur ou pour le froid.
  19. Barre d'appui ou racleuse (1) selon la revendication 18, caractérisée en ce que le conduit (11) traverse les éléments céramiques (1b).
  20. Barre d'appui ou racleuse (1) selon la revendication 18, caractérisée en ce que le conduit se trouve entre les éléments céramiques (1b) et une barre de support (la) pour les éléments céramiques (1b).
  21. Barre d'appui ou racleuse (1) selon l'une des revendications 18 à 20, caractérisée en ce que le conduit commence à une extrémité de la barre d'appui ou racleuse (1) et se termine à l'autre extrémité de celle-ci.
  22. Barre d'appui ou racleuse (1) selon l'une des revendications 18 à 20, caractérisée en ce que le conduit commence à une extrémité de la barre d'appui ou racleuse (1) et revient dans celle-ci à la même extrémité.
  23. Barre d'appui ou racleuse (1) selon la revendication 22, caractérisée en ce que le conduit d'aller (11) est relié au conduit de retour (12) à l'intérieur de ladite barre d'appui ou racleuse (1).
  24. Barre d'appui ou racleuse (1) selon la revendication 22, caractérisée en ce que le conduit d'aller (11) est relié au conduit de retour (12) par une pièce tubulaire (15) qui se trouve à l'extérieur de ladite barre d'appui ou racleuse (1).
  25. Barre d'appui ou racleuse (1) selon l'une des revendication 18 à 24, caractérisée en ce que les éléments céramiques (1b) et la barre de support (la) sont tous pourvus d'au moins un conduit ou d'éléments formant conduits.
EP06450181A 2006-04-13 2006-12-14 Procédé destiné à la commande de la température des éléments céramiques d'une barre d'appui ou d'une racleuse dans une installation de production de papier tout comme dispositif et barre d'appui ou racleuse destinés à l'exécution de ce procédé Not-in-force EP1845189B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT06450181T ATE434682T1 (de) 2006-04-13 2006-12-14 Verfahren zur steuerung der temperatur der keramischen elemente einer abstütz- bzw. abstreifleiste in einer anlage zur papiererzeugung sowie einrichtung und abstütz- bzw. abstreifleiste zur durchführung dieses verfahrens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0064406A AT503404A1 (de) 2006-04-13 2006-04-13 Verfahren zur steuerung der temperatur der keramischen elemente einer abstütz- bzw. abstreifleiste in einer anlage zur papiererzeugung sowie einrichtung und abstütz- bzw. abstreifleiste zur durchführung dieses verfahrens

Publications (3)

Publication Number Publication Date
EP1845189A2 EP1845189A2 (fr) 2007-10-17
EP1845189A3 EP1845189A3 (fr) 2008-04-30
EP1845189B1 true EP1845189B1 (fr) 2009-06-24

Family

ID=38283059

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06450181A Not-in-force EP1845189B1 (fr) 2006-04-13 2006-12-14 Procédé destiné à la commande de la température des éléments céramiques d'une barre d'appui ou d'une racleuse dans une installation de production de papier tout comme dispositif et barre d'appui ou racleuse destinés à l'exécution de ce procédé

Country Status (9)

Country Link
US (1) US7550062B2 (fr)
EP (1) EP1845189B1 (fr)
JP (1) JP4859736B2 (fr)
CN (1) CN101054780B (fr)
AT (2) AT503404A1 (fr)
BR (1) BRPI0701985A (fr)
CA (1) CA2582017C (fr)
DE (1) DE502006004060D1 (fr)
ES (1) ES2326385T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI686524B (zh) * 2016-12-13 2020-03-01 財團法人紡織產業綜合研究所 紡織設備與其熱能調控方法
CN115681979B (zh) * 2022-09-28 2025-11-18 江西仙廷精藏设备有限公司 一种火化机操作面降温装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3128866A1 (de) * 1981-07-22 1983-02-10 Feldmühle AG, 4000 Düsseldorf Papiermaschine
DE3421631C1 (de) * 1984-06-09 1985-09-12 Küsters, Eduard, 4150 Krefeld Verfahren zur Steuerung des Heiz- bzw. Kuehlmediumstroms in einer beheizbaren bzw. kuehlbaren Walze und entsprechende Walzenanordnung
DE3929265C2 (de) * 1989-09-02 1997-05-07 Voith Sulzer Papiermasch Gmbh Leiste für Blattbildungszone einer Papiermaschine
DE4028126C2 (de) * 1990-09-05 1993-10-14 Escher Wyss Gmbh Schlitzdüse, insbesondere für einen Doppelsiebformer und deren Verwendung in einem Doppelsiebformer
DE4107653A1 (de) * 1991-03-09 1992-09-10 Escher Wyss Gmbh Entwaesserungseinrichtung fuer die nasspartie einer papiermaschine
US5314585A (en) * 1993-05-10 1994-05-24 Champion International Corporation Low shear Uhle box
GB2370046A (en) * 2000-12-15 2002-06-19 Astenjohnson Inc Adjustable resilient blade support
EP1260633B1 (fr) * 2001-05-15 2007-02-21 Voith Patent GmbH Machine pour la fabrication d'une bande fibreuse à partir d'une suspension fibreuse, procédé pour la surveillance d'un élément de drainage d'une machine à papier, et machine à papier avec un système de surveillance d'un élément de drainage
AT411536B (de) * 2002-07-18 2004-02-25 Bartelmuss Klaus Ing Anlage zur erzeugung eines papierbandes mit mindestens einem über trag- bzw. führungswalzen bewegten, in sich geschlossenen siebband
CN1648336A (zh) * 2004-01-20 2005-08-03 克劳斯·巴特尔马斯 生产纸幅的设备

Also Published As

Publication number Publication date
ATE434682T1 (de) 2009-07-15
ES2326385T3 (es) 2009-10-08
JP4859736B2 (ja) 2012-01-25
DE502006004060D1 (de) 2009-08-06
CN101054780B (zh) 2011-06-15
EP1845189A2 (fr) 2007-10-17
CA2582017A1 (fr) 2007-10-13
CN101054780A (zh) 2007-10-17
US7550062B2 (en) 2009-06-23
JP2007284862A (ja) 2007-11-01
BRPI0701985A (pt) 2007-11-27
AT503404A1 (de) 2007-10-15
US20070240840A1 (en) 2007-10-18
CA2582017C (fr) 2013-03-19
EP1845189A3 (fr) 2008-04-30

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