EP2138789B1 - Vorrichtung zum Trocknen eines Keramikprodukts, insbesondere aus Ton - Google Patents

Vorrichtung zum Trocknen eines Keramikprodukts, insbesondere aus Ton Download PDF

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Publication number
EP2138789B1
EP2138789B1 EP20090162703 EP09162703A EP2138789B1 EP 2138789 B1 EP2138789 B1 EP 2138789B1 EP 20090162703 EP20090162703 EP 20090162703 EP 09162703 A EP09162703 A EP 09162703A EP 2138789 B1 EP2138789 B1 EP 2138789B1
Authority
EP
European Patent Office
Prior art keywords
notches
support elements
drying
products
support
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
EP20090162703
Other languages
English (en)
French (fr)
Other versions
EP2138789A1 (de
Inventor
Luc Tavernier
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.)
Edilians SAS
Original Assignee
Imerys TC SAS
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Filing date
Publication date
Application filed by Imerys TC SAS filed Critical Imerys TC SAS
Publication of EP2138789A1 publication Critical patent/EP2138789A1/de
Application granted granted Critical
Publication of EP2138789B1 publication Critical patent/EP2138789B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/06—Chambers, containers, or receptacles
    • F26B25/14—Chambers, containers, receptacles of simple construction
    • F26B25/18—Chambers, containers, receptacles of simple construction mainly open, e.g. dish, tray, pan, rack
    • 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
    • F27D5/00—Supports, screens, or the like for the charge within the furnace
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2210/00—Drying processes and machines for solid objects characterised by the specific requirements of the drying good
    • F26B2210/02—Ceramic articles or ceramic semi-finished articles

Definitions

  • the invention relates to a device for drying a ceramic product, especially clay.
  • clay products such as bricks
  • the latter are successively extruded, dried, cooked and optionally ground.
  • the products are conventionally arranged on grids. Hot air passing through the grids is brought over the entire surface of the products to ensure uniform drying thereof.
  • the products are subjected to a retraction phenomenon in which their dimensions are substantially reduced.
  • tensions apply at the level of the anchoring zones. These tensions generate deformations or cracks in the products.
  • the document US 4,300,881 proposes a device for drying a ceramic product, in particular clay, comprising a first and a second longitudinal members each comprising a plurality of notches, and a plurality of cylindrical tube-shaped support rollers on which the product to be dried is intended to come to rest. The ends of the support rollers rest against the bottom of the notches, to allow the pivoting of these rollers in the notches.
  • Such a drying device provides little space between the different support rollers.
  • the air can then hardly circulate at the bottom face of the products and the drying is not performed uniformly and efficiently. Heterogeneity of drying then leads to product degradation and longer drying times.
  • the invention aims to overcome this disadvantage by providing a drying device ensuring good homogeneity and reduced drying time of the products, while avoiding their degradation.
  • the document FR 2,282,978 discloses a ceramic product drying device having first and second longitudinal members each comprising a plurality of notches, and a plurality of elongate support members, each support member having an upper edge on which the product to be dried is for to come to rest, and a first and a second ends resting on the upper face of the longitudinal members, the ends of the support elements and the notches being designed to allow the displacement of the support elements in the notches.
  • Each support element has the shape of a plate disposed substantially vertically.
  • the structure of the notches does not allow pivoting of the support elements in the notches, but only a displacement along the longitudinal axis, so that either the support moves by rubbing in the notch, or the upper edge of the support moves by rubbing with respect to the lower surface of the product. Especially in the case where the clearance is very low, it is therefore possible that the upper edge of the support element rubs against the bottom wall of the products, resulting in degradation thereof.
  • the invention relates to a device for drying a ceramic product, in particular clay, comprising a first and a second longitudinal members each comprising a plurality of notches, and a plurality of elongated support elements having the form of a plate disposed substantially vertically, each support member having an upper edge on which the product to be dried is intended to rest, and first and second ends resting in notches, characterized in that each notch is provided in the upper face of a spar, the lower edge of the ends of the support members rests on the bottom of a notch, and the ends of the support elements and the notches are designed to allow pivoting of the support elements in the notches.
  • the shape of the plates and their orientation make it possible to arrange a significant day between the different support elements, so that the air flow reaching the bottom wall of the products to be dried is not hindered.
  • the drying of the products is therefore performed in a homogeneous and efficient manner.
  • pivoting of the supports ensures that the upper edge of the latter does not create stress on the underside of the products, the retraction of the products being completely absorbed by the pivoting.
  • each plate is formed by two tabs disposed in the upper part thereof, extending outwardly and resting on the bottom of the notches.
  • the support members can pivot along the contact edge between the tabs and the bottom of the corresponding notches.
  • the upper edge of the support elements has a rounded or pointed section.
  • each notch has a generally conical shape flaring outwards.
  • each support element is arranged so that its center of gravity is disposed under the pivot axis formed by the line of contact between the lateral ends and the notches.
  • the support members can be pivoted to compensate for the dimensional shrinkage of the products and are thus offset from their vertical equilibrium position.
  • the weight of the support elements tends to recall the latter in their vertical position, so that it is not necessary to replace them before another drying cycle of products.
  • At least one of the notches or at least one of the support elements is equipped with means for limiting the rotation or immobilization of the corresponding support element, for example a shim or a wedge.
  • the immobilization of at least one support element makes it possible to keep the product in a stable equilibrium position and to prevent the support elements from all tilting on the same side.
  • FIGS. Figures 1 to 4 A drying device according to the invention is illustrated in FIGS. Figures 1 to 4 . It comprises a first and a second longitudinal members 1, 2 of rectangular general section, arranged parallel to one another.
  • Each spar comprises an upper surface 3 in which are provided notches 4 regularly spaced from each other.
  • Each notch has a generally conical shape flaring upwards, the notches of the first spar being arranged opposite those of the second spar.
  • the drying device further comprises a plurality of plate-like support members.
  • Each support element 5 has, in front view and as illustrated in FIG. figure 2 , a general form of T. Indeed, each support member comprises a central portion 6 of generally rectangular shape having a lower edge 7 and an upper edge 8 from which laterally extend two tabs 9, 10 forming the wings of T.
  • the support elements 5 are mounted in the notches 4, substantially perpendicular to the longitudinal members 1, 2, so that the lower edge 11 of the tabs 9, 10 is in contact against the bottom of the corresponding notches 4.
  • only a part of the longitudinal members 1, 2 is equipped with the support elements 5 and, in this part, only one notch 4 out of two is equipped with a support element 5.
  • the spacing of the support elements 5 is dependent on the dimensions of the products to be dried as well as the drying conditions. It is therefore possible to adjust such a gap according to the needs, it can be any multiple of the distance between two notches 4.
  • the upper edge 8 of the support elements 5 and / or the lower edge 11 of the lugs 9, 10 have a rounded or point-shaped section.
  • the median portion 6 extends downwardly beyond the tabs, the center of gravity G of each support element being then disposed under the lower edge 11 of the tabs 9, 10.
  • One of the support elements is immobilized in a vertical position, so as to define a stable position of the products 12 and prevent tilting of all the support elements 5 on the same side.
  • the immobilization can be carried out via a wedge or a rider mounted in the corresponding notch or notches (not shown).
  • the flow of hot air can easily pass through the spaces formed between two support elements 5 and reach the bottom wall of the products 12.
  • the surface can not be reached by the hot air flow is almost zero and corresponds contact areas between the upper edge 8 tapered support members 5 and the bottom wall of the products 12.
  • the products 12 are subjected to a dimensional shrinkage.
  • the support elements 5 then progressively accompany this withdrawal by pivoting around the lower edge 11 of the lugs 9, 10.
  • the support members 5 arranged on one side of the immobilized support member 13 pivot in the opposite direction to those on the opposite side, as shown in FIG. figure 4 .
  • the rounded or pointed shapes of the upper edge 8 and the lower edges 11 of the lugs 9, 10 facilitate the pivoting of the support elements 5.
  • the products 12 are removed from the support elements 5 and they return to their vertical equilibrium position.
  • the drying device can then be reused for a new drying cycle of products.
  • the device presented above makes it possible to avoid degradation of the products during drying, while ensuring good homogeneity and reduced drying time of the products.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)

Claims (6)

  1. Trocknungsvorrichtung eines Keramikprodukts (12), insbesondere aus Ton, die einen ersten und einen zweiten Längsträger (1, 2) aufweist, die jeder eine Vielzahl von Kerben (4) umfassen, und eine Vielzahl länglicher Stützelemente (5), die die Form einer etwa vertikal angeordneten Platte aufweisen, wobei jedes Stützelement (5) einen oberen Rand (8) aufweist, auf dem das zu trocknende Produkt (12) bestimmt ist aufzuliegen, sowie ein erstes und ein zweites Ende (9, 10), das in Kerben (4) ruht, dadurch gekennzeichnet, dass jede Kerbe in die Oberseite eines Längsträgers (1, 2) eingearbeitet ist, der untere Rand (11) der Enden (9, 10) der Stützelemente (5) auf dem Boden einer Kerbe ruht und die Enden (9, 10) der Stützelemente (5) und die Kerben (4) ausgebildet sind, um das Schwenken der Stützelemente in den Kerben (4) zu erlauben.
  2. Trocknungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Enden jeder Platte von zwei Füßen (9, 10) gebildet werden, die im oberen Teil derselben angeordnet sind, die sich nach außen erstrecken und auf dem Boden der Kerben (4) ruhen.
  3. Trocknungsvorrichtung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass der obere Rand (8) der Stützelemente (5) einen abgerundeten oder spitzen Querschnitt aufweist.
  4. Trocknungsvorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass jede Kerbe (4) eine allgemein konische Form aufweist, die sich nach außen erweitert.
  5. Trocknungsvorrichtung nach Anspruch 1 bis 4, dadurch gekennzeichnet, dass jedes Stützelement (5) derart ausgebildet ist, dass sein Schwerkraftzentrum (G) unter der Schwenkachse angeordnet ist, die von der Kontaktlinie zwischen den seitlichen Enden (9, 10) und den Kerben (4) gebildet wird.
  6. Trocknungsvorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass mindestens eine der Kerben (4) oder mindestens eines der Stützelemente (5) mit Mitteln zur Begrenzung der Rotation oder Feststellmitteln des entsprechenden Stützelements (5), beispielsweise mit einem Keil oder Klotz, ausgestattet ist.
EP20090162703 2008-06-26 2009-06-15 Vorrichtung zum Trocknen eines Keramikprodukts, insbesondere aus Ton Not-in-force EP2138789B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0803595A FR2933174B1 (fr) 2008-06-26 2008-06-26 Dispositif de sechage d'un produit en ceramique,notamment en argile

Publications (2)

Publication Number Publication Date
EP2138789A1 EP2138789A1 (de) 2009-12-30
EP2138789B1 true EP2138789B1 (de) 2013-10-23

Family

ID=40289213

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20090162703 Not-in-force EP2138789B1 (de) 2008-06-26 2009-06-15 Vorrichtung zum Trocknen eines Keramikprodukts, insbesondere aus Ton

Country Status (3)

Country Link
EP (1) EP2138789B1 (de)
ES (1) ES2443049T3 (de)
FR (1) FR2933174B1 (de)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3103421A (en) * 1963-09-10 Marchetti
FR486214A (fr) * 1917-07-18 1918-03-19 Hans Peter Dinesen Dispositif destiné au séchage des matières en sacs ou contenues dans des enveloppes analogues
GB172200A (en) * 1920-11-02 1921-12-08 Walter Lee An improved rack for use mainly in drying sheet leather
DE1265019B (de) * 1966-02-22 1968-03-28 Thomas Fa Robert Transporteinheit fuer Formlinge aus Ton, Beton od. dgl.
FR2282978A1 (fr) * 1974-08-29 1976-03-26 Lauragais Tuileries Briq Procede de fabrication d'une brique de grande longueur et moyens de mise en oeuvre
US4045167A (en) * 1975-11-06 1977-08-30 Acme Marls Limited Muffled kiln cars
DE2749569C2 (de) * 1977-11-05 1986-06-26 Norbert Dr. 5410 Höhr-Grenzhausen Steuler Brennhilfsmittelbesatz für das einlagige Brennen keramischer Formlinge
DE2939437A1 (de) * 1979-09-28 1981-04-16 Annawerk Keramische Betriebe GmbH, 8633 Rödental Brennwagenaufbau
EP0065600B1 (de) * 1981-05-21 1985-10-30 Acme Marls Limited Gestell zum Schnellbrennen keramischer Gegenstände in einem Ofen
ITMO20040150A1 (it) * 2004-06-17 2004-09-17 Inteco Ceramic Supplies S R L Telaio per il sostegno di manufatti
DE202006015709U1 (de) * 2006-10-11 2007-01-18 Meiser Gitterroste Kg Gitterrost

Also Published As

Publication number Publication date
FR2933174B1 (fr) 2010-08-20
ES2443049T3 (es) 2014-02-17
FR2933174A1 (fr) 2010-01-01
EP2138789A1 (de) 2009-12-30

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