EP0518279B1 - Four pour le traitement thermique de produits en vrac - Google Patents

Four pour le traitement thermique de produits en vrac Download PDF

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Publication number
EP0518279B1
EP0518279B1 EP92109728A EP92109728A EP0518279B1 EP 0518279 B1 EP0518279 B1 EP 0518279B1 EP 92109728 A EP92109728 A EP 92109728A EP 92109728 A EP92109728 A EP 92109728A EP 0518279 B1 EP0518279 B1 EP 0518279B1
Authority
EP
European Patent Office
Prior art keywords
tube
oven
supporting
oven according
beams
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
EP92109728A
Other languages
German (de)
English (en)
Other versions
EP0518279A1 (fr
Inventor
Kurt Ellringmann
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.)
Maerz Ofenbau AG
Maerz Ofenbau GmbH
Original Assignee
Maerz Ofenbau AG
Maerz Ofenbau 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 Maerz Ofenbau AG, Maerz Ofenbau GmbH filed Critical Maerz Ofenbau AG
Publication of EP0518279A1 publication Critical patent/EP0518279A1/fr
Application granted granted Critical
Publication of EP0518279B1 publication Critical patent/EP0518279B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0073—Seals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
    • F27B9/201—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace walking beam furnace
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D2003/0034—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities
    • F27D2003/0036—Means for moving, conveying, transporting the charge in the furnace or in the charging facilities comprising inflatable or extendable parts

Definitions

  • the invention relates to a furnace for the heat treatment of lumpy goods, for example sheet metal, with a transport device for passing the goods to be heated through the furnace.
  • This transport device has two groups of longitudinal beams bearing the goods, which are alternately spaced apart and from which at least one beam group in a higher position than the other beam group can advance a section of the transport path through the furnace and then in a lower position than this other Bar group can be moved back to its starting position.
  • a supporting structure which is movable with it and which has at least one vertical side surface which extends continuously over the entire length of the supporting structure and which faces the supporting structure of the adjacent longitudinal beam.
  • the water channels in the known stoves are composed of individual longitudinal sections for structural reasons, which are provided on their abutting front ends with outwardly projecting flanges, which are arranged with sealing strips between them are bolted in order to achieve a firm and liquid-tight connection of the longitudinal shots placed next to each other.
  • the piece goods to be treated in the furnace must be supported on at least two longitudinal beams per bar group and that sheet-like piece goods should not or only slightly protrude laterally on its edge for reasons of support
  • the smallest possible center-to-center distance between the neighboring walking beams of the two groups of beams are desirable.
  • the invention is therefore based on the object to reduce the center distance of the longitudinal beams in a furnace of the type mentioned, without the effectiveness of endanger the gas-tight seal of the floor.
  • This is achieved according to the invention in that, in this furnace, between two adjacent supporting structures of the longitudinal beams, a hose is also provided, which extends over the entire length of the supporting structures and which closely clings to the vertical side surface of at least one of the adjacent supporting structures.
  • the tube can be expanded in cross-section by filling with a pneumatic or hydraulic pressure medium and can thus be pressed against the side surface in such a way that a good seal against air flowing into the interior of the furnace results over the entire length of the furnace.
  • the hose is mounted on one of the two adjacent support structures, namely on brackets arranged on this support structure, with one side against the vertical side surface of this support structure and the other side against the vertical side surface of the adjacent one Carrying structure presses.
  • the hoses located between two support structures are not each mounted on one of these two support structures, but are arranged individually and stationary between the two support structures.
  • the relative movement between the hose and the moving vertical side surface against which the hose is pressed during operation of the transport device leads to the occurrence of a longitudinal tensile stress in the hose due to friction.
  • the floor parts can, according to the invention, be formed in each case by a plurality of layers of heat-insulating fiber mats which essentially lie against one another with their side edges.
  • the step-by-step furnace shown in the drawing has two groups of longitudinal beams 1, 2 lying next to one another in the cross section of the furnace, the beams of these two groups being alternately spaced apart.
  • These longitudinal beams 1, 2 are each supported on supports 4 of supporting structures, the main part of which consists of hollow-shaped supporting beams 6, which are connected via supports 7 to crossbars 8a and 8b which can be moved back and forth and up and down in the longitudinal direction of the furnace via a drive mechanism.
  • This support part 5 consists of a base plate fastened to the upper side of the supporting beam, on which the fiber mats are mounted, and a side wall which does not protrude up to the uppermost fiber mat on a side edge of this base plate.
  • the adjacent floor parts are in direct contact with one another with their fiber mats and the upstanding side wall, as a result of which a good insulation effect and an additional largely gas-tight closure of the stove top of the oven is ensured.
  • Every second longitudinal beam 2 has brackets 9 on its supporting structure, which protrude on both sides from the supporting beam 6 and carry hoses 11 lying on both sides of this beam, which extend over the entire length of the beam.
  • these hoses lie against the vertical side surfaces of these support beams, while on their other side surface there is a rocker 12, which also extends over the entire length of the beam and can be pivoted about axes 13 extending in the longitudinal direction of the hose.
  • these rockers On the side facing away from the hose, these rockers carry slide bars 14, which are mounted in holders 15 and can be pressed with their smooth side surface onto the vertical sides of the adjacent supporting beams 6. This pressing of the slide strips 14 takes place by widening the hoses 11 with the aid of a pneumatic or hydraulic pressure medium filled into the hoses.
  • the slide strips suitably consist of an abrasion-resistant material with a smooth surface, for example hard plastic.
  • each longitudinal beam prefferably has brackets with hoses etc. protruding on one side.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Tunnel Furnaces (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)

Claims (11)

  1. Four pour le traitement thermique de produits en pièces, par exemple de tôles, comportant un dispositif de transport pour transporter à travers le four le produit à chauffer, qui présente deux groupes de poutrelles longitudinales portant les produits, qui sont disposées en alternance a distance l'une à côté de l'autre et dont au moins un groupe de poutrelles peut être déplacé vers l'avant sur une partie du parcours de transport à travers le four, dans une position plus haute que l'autre groupe de poutrelles, et qui peut être ensuite ramené dans sa position de départ, dans une position plus basse que ledit autre groupe de poutrelles, tandis qu'en dessous de chaque poutrelle longitudinale est prévue une structure porteuse, portant cette poutrelle et mobile avec elle, et qui présente au moins une face latérale perpendiculaire s'étendant de manière continue sur toute la longueur de la structure inférieure, qui est tournée vers la structure porteuse de la poutrelle longitudinale voisine, caractérisé en ce qu'entre les deux structures porteuses voisines (6) est prévu un tuyau souple (11) s'étendant également sur toute la longueur des structures porteuses, et épousant étroitement la forme de la face latérale.
  2. Four selon la revendication 1, caractérisé en ce que le tuyau souple (11) peut être agrandi en section transversale par remplissage par un fluide pneumatique ou hydraulique sous pression, et peut ainsi être pressé contre ladite face latérale.
  3. Four selon la revendication 1, caractérisé en ce que le tuyau souple (11) est monté sur une des deux structures porteuses voisines (6).
  4. Four selon la revendication 3, caractérisé en ce que le tuyau souple (11) est monté sur une ou plusieurs consoles (9) qui sont prévues sur la structure porteuse (6).
  5. Four selon la revendication 4, caractérisé en ce que la structure porteuse (6) d'une poutrelle longitudinale (2) sur deux porte deux tuyaux souples d'étanchéité (11) qui épousent les faces latérales, perpendiculaires, tournées vers eux, des deux structures porteuses voisines (6).
  6. Four selon la revendication 1 caractérisé en ce que, sur son côté tourne vers lesdites faces latérales perpendiculaires, le tuyau souple (11) porte une languette de glissement s'étendant sur toute sa longueur, et qui peut être pressée par le tuyau souple contre ladite face latérale.
  7. Four selon la revendication 6 caractérisé en ce que, sur la face du tuyau souple (11) tournée vers ladite face latérale perpendiculaire est disposé un organe oscillant (12) s'étendant sur toute la longueur du tuyau souple, qui peut être incliné en dessous ou au-dessus du tuyau souple (11), autour d'un axe (13) s'étendant dans la direction de transport du four, et qui peut être incliné contre ladite face latérale par l'intermédiaire de la pression intérieure du tuyau souple.
  8. Four selon la revendication 7 caractérisé en ce que, sur le côté de l'organe oscillant (12) qui est tourné vers ladite face latérale perpendiculaire s'appuie une languette de glissement (14) s'étendant sur toute la longueur de l'organe oscillant.
  9. Four selon la revendication 6 ou 8, caractérisé en ce que la languette de glissement (14) présente une surface lisse glissante.
  10. Four, en particulier selon la revendication 1, dont la sole thermiquement isolée située en dessous des poutrelles longitudinales est constituée de plusieurs pièces de sole situées l'une à côté de l'autre transversalement à la direction de transport du four, et dont chaque pièce de sole est disposée en dessous d'une des poutrelles longitudinales et est portée par la structure porteuse de celle-ci, caractérisé en ce que les pièces de sole (3) sont formées chacune de plusieurs couches de matelas de fibres thermiquement isolants dont les bords latéraux sont essentiellement contigus.
  11. Four selon la revendication 10, caractérisé en ce que les matelas de fibres sont disposés sur une surface porteuse (5) qui est fixée sur la structure porteuse (6) dans la partie supérieure de celle-ci et qui présente une paroi latérale s'étendant en hauteur sur au moins une partie de la hauteur totale des couches de matelas, contre laquelle se disposent essentiellement les matelas de fibres de la pièce de sole voisine (3).
EP92109728A 1991-06-14 1992-06-10 Four pour le traitement thermique de produits en vrac Expired - Lifetime EP0518279B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4119709A DE4119709A1 (de) 1991-06-14 1991-06-14 Ofen fuer die waermebehandlung von stueckigem gut
DE4119709 1991-06-14

Publications (2)

Publication Number Publication Date
EP0518279A1 EP0518279A1 (fr) 1992-12-16
EP0518279B1 true EP0518279B1 (fr) 1995-08-30

Family

ID=6433984

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92109728A Expired - Lifetime EP0518279B1 (fr) 1991-06-14 1992-06-10 Four pour le traitement thermique de produits en vrac

Country Status (6)

Country Link
US (1) US5248254A (fr)
EP (1) EP0518279B1 (fr)
AT (1) ATE127211T1 (fr)
DE (2) DE4119709A1 (fr)
DK (1) DK0518279T3 (fr)
ES (1) ES2080377T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2480695C2 (ru) * 2008-02-13 2013-04-27 Солиос Карбон Затвор с надувным периферическим уплотнением и запорная система окна многокамерной печи, содержащая такой затвор

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6004130A (en) * 1997-08-06 1999-12-21 Kaiser Aluminum & Chemical Corporation Flue seal for a carbon anode baking furnace
US20140186484A1 (en) * 2012-12-27 2014-07-03 Berndorf Band Gmbh Sealing system for a moved metal strip as well as a strip casting installation with such a sealing system
WO2020178655A1 (fr) * 2019-03-05 2020-09-10 Sms Group S.P.A. Four doté d'un système de manipulation de charge à poutres mobiles

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE683012C (de) * 1934-09-30 1939-10-27 Benno Schilde Maschb Akt Ges Lagerung des festen Herdrueckens fuer Durchlaufoefen mit Schwingbalkenfoerderung
FR1344841A (fr) * 1963-01-23 1963-11-29 Demag Ag Dispositif de joint étanche pour calotte de tête de fours métallurgiques ou analogues
US3948494A (en) * 1974-10-21 1976-04-06 Sola Basic Industries, Inc. Walking beam furnace
DE2926661A1 (de) * 1979-07-02 1981-01-15 Italimpianti Deutschland Indus Hubbalkenofen
FR2485711A1 (fr) * 1980-06-24 1981-12-31 Hartmann Pere & Fils Dispositif de fermeture etanche pour four-tunnel a circuit hydraulique et accouplement pour circuit hydraulique
FR2542433B1 (fr) * 1983-03-11 1988-01-29 Stein Heurtey Fours a longerons refractaires
JPS6237313A (ja) * 1985-08-09 1987-02-18 Chugai Ro Kogyo Kaisha Ltd ウオ−キングビ−ム型鋼片加熱炉

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2480695C2 (ru) * 2008-02-13 2013-04-27 Солиос Карбон Затвор с надувным периферическим уплотнением и запорная система окна многокамерной печи, содержащая такой затвор

Also Published As

Publication number Publication date
DE59203434D1 (de) 1995-10-05
EP0518279A1 (fr) 1992-12-16
DE4119709A1 (de) 1992-12-17
ES2080377T3 (es) 1996-02-01
US5248254A (en) 1993-09-28
ATE127211T1 (de) 1995-09-15
DK0518279T3 (da) 1995-11-06

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