WO2003031292A2 - Heat-resistant conveyor belt - Google Patents
Heat-resistant conveyor belt Download PDFInfo
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- WO2003031292A2 WO2003031292A2 PCT/CH2003/000070 CH0300070W WO03031292A2 WO 2003031292 A2 WO2003031292 A2 WO 2003031292A2 CH 0300070 W CH0300070 W CH 0300070W WO 03031292 A2 WO03031292 A2 WO 03031292A2
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- Prior art keywords
- conveyor belt
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- layer
- belt according
- warp threads
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Classifications
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D11/00—Double or multi-ply fabrics not otherwise provided for
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
- D03D15/52—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads thermal insulating, e.g. heating or cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/30—Belts or like endless load-carriers
- B65G15/32—Belts or like endless load-carriers made of rubber or plastics
- B65G15/34—Belts or like endless load-carriers made of rubber or plastics with reinforcing layers, e.g. of fabric
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/30—Belts or like endless load-carriers
- B65G15/32—Belts or like endless load-carriers made of rubber or plastics
- B65G15/38—Belts or like endless load-carriers made of rubber or plastics with flame-resistant layers, e.g. of asbestos, glass
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
- D03D15/513—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads heat-resistant or fireproof
Definitions
- the invention relates to a heat-resistant conveyor belt according to the preamble of claim 1.
- high-quality glass products such as car headlight glasses or television tubes requires conveyor or conveyor belts that allow the still hot glass products to be conveyed.
- These glass products can have temperatures in the range between 500 ° C and about 900 ° C. This temperature range is also referred to below as the high temperature range.
- the document EP 0 962 565 AI discloses such a heat-resistant conveyor belt, which is intended for installation in a system for the transport of hot objects.
- This conveyor belt is suitable, for example, for the transport of glass at a temperature of over 500 ° C and up to 800 or 900 ° C.
- Such a conveyor belt which is subjected to tensile forces and is guided over rollers, firstly has to withstand the tensile and bending forces which occur during mechanical conveyance, and secondly has to withstand the high temperatures of the transported glasses.
- a disadvantage of the known conveyor belt is the fact that there is relatively high wear during operation occurs, which limits the length of time a possible use of the conveyor belt and also causes increased operating costs.
- a conveyor belt for the high temperature range must on the one hand have a permanent contact surface which allows the hot glasses to be transported, and on the other hand must have such a high tensile strength over a long period of time that the use as a conveyor belt is advantageously ensured for as long as possible.
- the invention is achieved in particular with a heat-resistant conveyor belt comprising a multi-layer fabric with at least three fabric layers, a heat-resistant cover layer, an insulating middle layer and a tension layer, the warp threads of the insulating middle layer consisting of a high-temperature glass yarn or a silicate yarn.
- the conveyor belt according to the invention has the advantage that it has both a high heat resistance and a high maximum tensile force in which a thermally insulating middle layer is arranged between the heat-resistant cover layer and the tensile layer.
- This insulating middle layer influences the temperature distribution in the conveyor belt in such a way that the cover layer can be at a high temperature, whereas excessive heating of the tension layer is prevented by the insulating effect.
- the warp threads of the cover layer consist of metal fibers
- the warp threads of the insulating middle layer consist of a high-temperature glass yarn or a silicate yarn, in particular a high-temperature glass fiber yarn or a silicate fiber yarn
- the tensile layer consists of a high-strength yarn such as an aramid fiber, a mixed yarn made of aramid fibers and metal fibers, or a polybenzimidazole fiber (PBO fiber).
- the warp threads of the cover layer consist of pure metal fibers.
- the insulating middle layer has the advantage that the high-strength but heat-sensitive yarn of the tension layer is protected against high temperatures or against carbonization, which ensures long-term tensile strength of the high-strength yarn.
- the three different fabric layers are held together by a self-bond.
- the warp threads of the three different fabric layers are arranged so that they run in the conveyor belt in such a way that all fabric layers are thereby without additional Strings are held together.
- a conveyor belt designed in this way has the advantage that the thermal conductivity between the cover layer and the tensile layer is particularly high.
- the three different fabric layers are held together by an additional binding chain.
- the warp threads of the cover layer consist of metal wire, which in a particularly advantageous embodiment form loops protruding from the surface of the conveyor belt and thus form, for example, a terry-cloth-like surface structure. Since a metal wire is considerably less expensive than a metal fiber yarn, the use of a metal wire for the warp threads of the cover layer makes it possible to produce a cheaper conveyor belt.
- a weft thread made of a metal fiber yarn or a mixed yarn made of metal fibers and aramid fibers is preferably used to bind the warp threads.
- a metal fiber yarn preferably consists solely of metal fibers.
- the mixed yarn consists, for example, of aramid and a V2A steel (stainless steel), and has, for example, a metal content of 90% and an aramid content of 10%.
- the cover layer is also called the base layer because the object to be transported rests on this layer.
- FIG. 2 shows a longitudinal section through a heat-resistant conveyor belt, the cover layer of which has projecting loops;
- FIG. 3 shows a longitudinal section through a further embodiment of a heat-resistant conveyor belt with a self-binding
- Fig. 4 shows a longitudinal section through a heat-resistant conveyor belt with a binding chain.
- the heat-resistant conveyor belt 5 shown in FIG. 1 for a high-temperature range of over 500 ° C. is used to transport goods to be cooled, for example glass, which lies on top of the heat-resistant cover layer 1 and, for example, have a maximum temperature between 600 ° C. and 900 ° C. can.
- the multilayer fabric of the conveyor belt 5 consists of five fabric layers.
- the warp threads la, lb, lc consisting of metal fiber yarn or metal wire and together with the corresponding weft threads 4 form the heat-resistant cover layer 1.
- the warp threads 2a, 2b, 2c, 2d consisting of a heat-insulating material such as high-temperature glass yarn together with the corresponding weft threads 4 form the insulating middle layer 2.
- the warp threads 3a, 3b, 3c consisting of a high-strength yarn such as aramid, carbon or the PBO fiber, together with the corresponding weft threads 4 form the tension layer 3.
- the weft threads 4 can consist of a metal fiber yarn, which consists only of Metal, or from a mixed yarn, which includes both metal fibers and plastic fibers.
- the weft 4 of all five Fabric layers are made of the same material. In order to achieve a high thermal resistance between the heat-resistant cover layer 1 and the tension layer 3, the five fabric layers are held together by self-binding, in that the warp threads of the five fabric layers partially engage in an adjacent fabric layer and loop their weft thread 4, as shown at position ld is.
- a high thermal resistance between the cover layer 1 and the tension layer 3 is of central importance in order to protect the high-strength yarn 3a, 3b, 3c used in the tension layer 3 from a high temperature.
- the heat resistance of an aramid fiber is around 250 ° C. At higher temperatures, the aramid fiber is broken down into carbon and thus loses tensile strength.
- the binding chain 6 shown in Figure 4 which forms a direct connection between the cover layer 1 and the tension layer 3 and, especially if the binding chain 6 consists of a metal, results in a correspondingly high heat transfer between these two layers, the Self-binding shown in Figure 1 only a connection to the immediately adjacent fabric layer. This increases the possibility of a high
- Heat transport between the cover layer 1 and the tensile layer 3 is significantly reduced.
- a fabric or a conveyor belt 5 can be produced with a high density or with a large volume weight. This enables a mechanically robust, heat-resistant conveyor belt 5 with a high thermal resistance to be produced.
- the conveyor belt 5 shown in FIG. 2 has a cover layer 1 with projecting loops 1e, which results in a terry-cloth-like surface structure.
- the warp threads la, lb, lc consist of a thin metal wire, preferably with a diameter between 0.25 mm and 0.5 mm.
- the loop formation can be produced in that when the conveyor belt 5 is manufactured, similarly to terry weaving, while the weft thread 4 is struck, a section of the respective ' warp thread la, lb, lc is also pushed in, so that this section of the warp thread la, lb, lc up to loops le, which are set up accordingly.
- the hot material to be transported lies on the loops le. Because of these loops le, the conveyor belt 5 shown in FIG. 2 has a particularly high thermal resistance between the surface formed by the loops le and the tension layer 3.
- Figure 3 shows a conveyor belt 5 consisting of four fabric layers, which are held together by a self-bond, and form a heat-resistant cover layer 1, an insulating middle layer 2 and a tension layer 3.
- FIG. 4 shows a further exemplary embodiment of a conveyor belt 5 which has three fabric layers, a cover layer 1, a middle layer 2 and a tensile layer 3.
- the three fabric layers are held together by a binding chain 6.
- a pre-tensioned longitudinal thread 7 is woven between the middle layer 2 and the tension layer 3, which is arranged to reduce excessive stretching under tension.
- This prestressed longitudinal thread 7 could also be shown in FIGS. 1, 2 and 3 Conveyor belt 5 may be arranged.
- the longitudinal thread 7 could also be arranged at another point in the conveyor belt 5 running in the longitudinal direction.
- the longitudinal thread 7 is preferably designed as a so-called stem chain.
- the longitudinal thread 7 consists of a high tenacity yarn such as aramid.
- the longitudinal thread 7 could also be dispensed with.
- the cover layer 1 and / or the insulating middle layer 2 and / or the tensile layer 3 could consist of more than one layer.
- the cover layer 1 could have two layers of warp threads 1 a, 1 b arranged one above the other, which are held together by the binding chain 6 with the middle layer 2 and the tension layer 3.
- the conveyor belt 5 according to the invention can also comprise more than the five fabric layers shown in FIG. 1.
- the warp threads la, lb, lc could, in an advantageous embodiment, consist of a mixture of 50 to 90% by weight of stainless steel fibers and of 10 to 50% by weight of fibers which become carbon at high temperature disassemble.
- the warp threads la, lb, lc of the cover layer 1 consist of pure metal fibers.
- the metal known for example under the name "INOX 316L" is suitable as the metal.
- the warp threads of the insulating middle layer could, for example, consist of a silicate fiber yarn, which is made of textured or twisted yarns with a filament diameter of, for example, 6 ⁇ m.
- the exemplary silicate fiber yarn consists essentially of approx. 61% SiO 2, approx. 22% CaO and approx. 13% Al O 3 .
- the high temperature glass yarn or silicate yarn could also be an endless yarn.
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Belt Conveyors (AREA)
Abstract
Description
HITZEBESTÄNDIGES FÖRDERBANDHEAT-RESISTANT CONVEYOR BELT
Die Erfindung betrifft ein hitzebeständiges Förderband gemäss dem Oberbegriff von Anspruch 1.The invention relates to a heat-resistant conveyor belt according to the preamble of claim 1.
Die Herstellung hochwertiger Glasprodukte wie beispielsweise Autoscheinwerfergläser oder Fernsehröhren erfordert Transport- bzw. Förderbänder, welche die noch heissen Glasprodukte zu fördern erlauben. Diese Glasprodukte können Temperaturen im Bereich zwischen 500 °C und etwa 900 °C aufweisen. Dieser Temperaturbereich wird nachfolgend auch als Hochtemperaturbereich bezeichnet.The production of high-quality glass products such as car headlight glasses or television tubes requires conveyor or conveyor belts that allow the still hot glass products to be conveyed. These glass products can have temperatures in the range between 500 ° C and about 900 ° C. This temperature range is also referred to below as the high temperature range.
Die Druckschrift EP 0 962 565 AI offenbart ein derartiges, hitzebeständiges Förderband, welches zur Installation in einer Anlage zum Transport heisser Objekte bestimmt ist. Dieses Förderband ist zum Beispiel zum Transport von Glas bei einer Temperatur von über 500 °C und bis zu 800 oder 900 °C geeignet. Ein derartiges Förderband, welches Zugkräften ausgesetzt ist und über Rollen geleitet wird, muss erstens den Zug- und Biegekräften widerstehen, welche bei einer mechanischen Förderung auftreten, und muss zweitens den hohen Temperaturen der transportierten Gläsern widerstehen. Nachteilig an dem bekannten Förderband ist die Tatsache, dass während dem Betrieb ein relativ hoher Verschleiss auftritt, was die Zeitdauer einer möglichen Verwendung des Förderbandes begrenzt und zudem erhöhte Betriebskosten verursacht.The document EP 0 962 565 AI discloses such a heat-resistant conveyor belt, which is intended for installation in a system for the transport of hot objects. This conveyor belt is suitable, for example, for the transport of glass at a temperature of over 500 ° C and up to 800 or 900 ° C. Such a conveyor belt, which is subjected to tensile forces and is guided over rollers, firstly has to withstand the tensile and bending forces which occur during mechanical conveyance, and secondly has to withstand the high temperatures of the transported glasses. A disadvantage of the known conveyor belt is the fact that there is relatively high wear during operation occurs, which limits the length of time a possible use of the conveyor belt and also causes increased operating costs.
Bei der Gestaltung des hochtemperaturbeständigen Förderbandes ist zudem zu berücksichtigen, dass es heutzutage verboten ist Stoffe wie Asbest zu verwenden.When designing the high-temperature-resistant conveyor belt, it should also be borne in mind that it is forbidden to use substances such as asbestos these days.
Es ist Aufgabe der vorliegenden Erfindung ein wirtschaftlich vorteilhafteres Förderband für einen Hochtemperaturbereich zu schaffen, welches insbesondere vorteilhafte Langzeiteigenschaften aufweist.It is an object of the present invention to provide an economically more advantageous conveyor belt for a high-temperature range, which has particularly advantageous long-term properties.
Diese Aufgabe wird gelöst mit einem hitzebeständigen Förderband aufweisend die Merkmale von Anspruch 1. Die Unteransprüche 2 bis 10 betreffen weitere, vorteilhaft ausgestaltete Förderbänder.This object is achieved with a heat-resistant conveyor belt having the features of claim 1. The sub-claims 2 to 10 relate to further, advantageously configured conveyor belts.
Ein Förderband für den Hochtemperaturbereich muss somit einerseits eine dauerhafte Auflagefläche aufweisen, welche die heissen Gläser zu transportieren erlaubt, und andererseits über längere Zeit eine derart hohe Zugfestigkeit aufweisen, dass der Einsatz als Förderband vorteilhafterweise möglichst lange gewährleistet ist.A conveyor belt for the high temperature range must on the one hand have a permanent contact surface which allows the hot glasses to be transported, and on the other hand must have such a high tensile strength over a long period of time that the use as a conveyor belt is advantageously ensured for as long as possible.
Die Erfindung wird insbesondere gelöst mit einem hitzebeständigen Förderband aufweisend ein mehrlagiges Gewebe mit zumindest drei Gewebelagen, einer hitzebeständigen Deckschicht, einer isolierenden Mittelschicht sowie einer Zugschicht, wobei die Kettfäden der isolierenden Mittelschicht aus einem Hochtemperaturglasgarn oder einem Silikatgarn bestehen. Das erfindungsgemässe Förderband weist den Vorteil auf, dass es sowohl eine hohe Hitzeresistenz als auch eine hohe maximale Zugkraft aufweist, in dem zwischen der hitzebeständigen Deckschicht und der Zugschicht eine thermisch isolierende Mittelschicht angeordnet ist. Diese isolierende Mittelschicht beeinflusst die Temperaturverteilung im Förderband derart, dass die Deckschicht eine hohe Temperatur aufweisen kann, wogegen eine zu hohe Erwärmung der Zugschicht durch die isolierende Wirkung' verhindert wird.The invention is achieved in particular with a heat-resistant conveyor belt comprising a multi-layer fabric with at least three fabric layers, a heat-resistant cover layer, an insulating middle layer and a tension layer, the warp threads of the insulating middle layer consisting of a high-temperature glass yarn or a silicate yarn. The conveyor belt according to the invention has the advantage that it has both a high heat resistance and a high maximum tensile force in which a thermally insulating middle layer is arranged between the heat-resistant cover layer and the tensile layer. This insulating middle layer influences the temperature distribution in the conveyor belt in such a way that the cover layer can be at a high temperature, whereas excessive heating of the tension layer is prevented by the insulating effect.
In einer vorteilhaften Ausgestaltung bestehen die Kettfäden der Deckschicht aus Metallfasern, die Kettfäden der isolierenden Mittelschicht aus einem Hochtemperaturglasgarn oder einem Silikatgarn, insbesondere einem Hochtemperaturglas-Fasergarn oder einem Silikat-Fasergarn, und die Zugschicht aus einem hochfesten Garn wie einer Aramidfaser, einem Mischgarn aus Aramidfasern und Metallfasern, oder eine Polybenzimidazolfaser (PBO-Faser). Die Kettfäden der Deckschicht bestehen in einer besonders bevorzugten Ausgestaltung aus reinen Metallfasern. Die isolierende Mittelschicht bewirkt den Vorteil, dass das hochfeste jedoch wärmeempfindliche Garn der Zugschicht vor hohen Temperaturen beziehungsweise vor einem Karbonisieren geschützt ist, was eine langfristige Zugfestigkeit des hochfesten Garns gewährleistet.In an advantageous embodiment, the warp threads of the cover layer consist of metal fibers, the warp threads of the insulating middle layer consist of a high-temperature glass yarn or a silicate yarn, in particular a high-temperature glass fiber yarn or a silicate fiber yarn, and the tensile layer consists of a high-strength yarn such as an aramid fiber, a mixed yarn made of aramid fibers and metal fibers, or a polybenzimidazole fiber (PBO fiber). In a particularly preferred embodiment, the warp threads of the cover layer consist of pure metal fibers. The insulating middle layer has the advantage that the high-strength but heat-sensitive yarn of the tension layer is protected against high temperatures or against carbonization, which ensures long-term tensile strength of the high-strength yarn.
In einer besonders vorteilhaften Ausgestaltung sind die drei unterschiedlichen Gewebelagen über eine Selbstbindung zusammengehalten. Bei der Selbstbindung sind die Kettfäden der drei unterschiedlichen Gewebelagen derart im Förderband verlaufend angeordnet, dass dadurch alle Gewebelagen ohne zusätzliche Bindefäden zusammengehalten werden. Ein derart ausgestaltetes Förderband weist den Vorteil auf, dass der Wärmeleitwiderstand zwischen der Deckschicht und der Zugschicht besonders gross ist.In a particularly advantageous embodiment, the three different fabric layers are held together by a self-bond. In self-tying, the warp threads of the three different fabric layers are arranged so that they run in the conveyor belt in such a way that all fabric layers are thereby without additional Strings are held together. A conveyor belt designed in this way has the advantage that the thermal conductivity between the cover layer and the tensile layer is particularly high.
In einer weiteren Ausgestaltung sind die drei unterschiedlichen Gewebelagen über eine zusätzliche Bindekette zusammengehalten. In einer weiteren, vorteilhaften Ausgestaltung bestehen die Kettfäden der Deckschicht aus Metalldraht, welche in einer besonders vorteilhaften Ausgestaltung an der Oberfläche des Förderbandes vorstehende Schlingen bilden, und derart beispielsweise eine frottiergewebeförmige Oberflächenstruktur bilden. Da ein Metalldraht wesentlich kostengünstiger ist als ein Metallfasergarn, ist durch die Verwendung eines Metalldrahtes für die Kettfäden der Deckschicht ein kostengünstigeres Förderband herstellbar.In a further embodiment, the three different fabric layers are held together by an additional binding chain. In a further advantageous embodiment, the warp threads of the cover layer consist of metal wire, which in a particularly advantageous embodiment form loops protruding from the surface of the conveyor belt and thus form, for example, a terry-cloth-like surface structure. Since a metal wire is considerably less expensive than a metal fiber yarn, the use of a metal wire for the warp threads of the cover layer makes it possible to produce a cheaper conveyor belt.
Zur Abbindung der Kettfäden wird bevorzugt ein Schussfaden aus einem Metallfasergarn oder einem Mischgarn aus Metallfasern und Aramidfasern verwendet. Ein Metallfasergarn besteht vorzugsweise einzig aus Metallfasern. Das Mischgarn besteht beispielsweise aus Aramid sowie einem V2A-Stahl (nicht rostender Stahl), und weist beispielsweise einen Metallanteil von 90% sowie einen Aramidanteil von 10% auf.A weft thread made of a metal fiber yarn or a mixed yarn made of metal fibers and aramid fibers is preferably used to bind the warp threads. A metal fiber yarn preferably consists solely of metal fibers. The mixed yarn consists, for example, of aramid and a V2A steel (stainless steel), and has, for example, a metal content of 90% and an aramid content of 10%.
Die Deckschicht wird auch als Tragschicht bezeichnet, weil auf dieser Schicht das zu transportierende Objekt aufliegt.The cover layer is also called the base layer because the object to be transported rests on this layer.
Die Erfindung wird nachfolgend an Hand mehrerer Ausführungsbeispiele beschrieben. Es zeigen: Fig. 1 einen Längsschnitt durch ein hitzebeständiges Förderband mit einer Selbstbindung;The invention is described below using several exemplary embodiments. Show it: 1 shows a longitudinal section through a heat-resistant conveyor belt with a self-binding.
Fig. 2 einen Längsschnitt durch ein hitzebeständiges Förderband, dessen Deckschicht vorstehende Schlingen aufweist;2 shows a longitudinal section through a heat-resistant conveyor belt, the cover layer of which has projecting loops;
Fig. 3 einen Längsschnitt durch ein weiteres Ausführungsbeispiel eines hitzebeständigen Förderbandes mit einer Selbstbindung;3 shows a longitudinal section through a further embodiment of a heat-resistant conveyor belt with a self-binding;
Fig. 4 einen Längsschnitt durch ein hitzebeständiges Förderband mit einer Bindekette.Fig. 4 shows a longitudinal section through a heat-resistant conveyor belt with a binding chain.
Das in Figur 1 dargestellte hitzebeständige Förderband 5 für einen Hochtemperaturbereich von über 500 °C dient zum Transportieren von abzukühlendem Fördergut, beispielsweise von Glas, welches oben auf der hitzebeständigen Deckschicht 1 aufliegt, und beispielsweise eine maximale Temperatur zwischen 600 °C und 900 °C aufweisen kann. Das mehrlagige Gewebe des Förderbandes 5 besteht aus fünf Gewebelagen. Die Kettfäden la, lb, lc bestehend aus Metallfasergarn oder Metalldraht und bilden zusammen mit den entsprechenden Schussfäden 4 die hitzebeständige Deckschicht 1. Die Kettfäden 2a,2b,2c,2d bestehend aus einem Wärme isolierenden Material wie Hochtemperaturglasgarn bilden zusammen mit den entsprechenden Schussfäden 4 die isolierende Mittelschicht 2. Die Kettfäden 3a,3b,3c, bestehend aus einem hochfesten Garn wie Aramid, Karbon oder der PBO-Faser, bilden zusammen mit den entsprechenden Schussfäden 4 die Zugschicht 3. Die Schussfäden 4 können aus einem Metallfasergarn bestehen, welches nur aus Metall besteht, oder aus einem Mischgarn, welches sowohl Metallfasern als auch Kunststofffasern umfasst. Die Schussfäden 4 aller fünf Gewebelagen bestehen aus demselben Material. Um zwischen der hitzebeständigen Deckschicht 1 und der Zugschicht 3 einen hohen Wärmewiderstand zu erreichen sind die fünf Gewebelagen über eine Selbstbindung zusammengehalten, indem die Kettfäden der fünf Gewebelagen teilweise in eine benachbarte Gewebelage eingreifen, und deren Schussfaden 4 umschlingen, wie dies an der Position ld dargestellt ist. Ein hoher Wärmewiderstand zwischen der Deckschicht 1 und der Zugschicht 3 ist von zentraler Bedeutung um das in der Zugschicht 3 verwendete hochfeste Garn 3a,3b,3c vor einer hohen Temperatur zu schützen. So liegt beispielsweise die Wärmefestigkeit einer Aramidfaser bei etwa 250 °C. Bei höheren Temperaturen wird die Aramidfaser in Kohlenstoff zersetzt und verliert dadurch die Zugfestigkeit. Im Gegensatz zu der in Figur 4 dargestellten Bindekette 6, welche eine direkte Verbindung zwischen der Deckschicht 1 und der Zugschicht 3 bildet und, insbesondere wenn die Bindekette 6 aus einem Metall besteht, einen entsprechend hohen Wärmetransport zwischen diesen beiden Schichten zur Folge hat, erzeugt die in Figur 1 dargestellte Selbstbindung nur eine Verbindung zu der unmittelbar benachbart angeordneten Gewebelage. Dadurch wird die Möglichkeit eines hohenThe heat-resistant conveyor belt 5 shown in FIG. 1 for a high-temperature range of over 500 ° C. is used to transport goods to be cooled, for example glass, which lies on top of the heat-resistant cover layer 1 and, for example, have a maximum temperature between 600 ° C. and 900 ° C. can. The multilayer fabric of the conveyor belt 5 consists of five fabric layers. The warp threads la, lb, lc consisting of metal fiber yarn or metal wire and together with the corresponding weft threads 4 form the heat-resistant cover layer 1. The warp threads 2a, 2b, 2c, 2d consisting of a heat-insulating material such as high-temperature glass yarn together with the corresponding weft threads 4 form the insulating middle layer 2. The warp threads 3a, 3b, 3c, consisting of a high-strength yarn such as aramid, carbon or the PBO fiber, together with the corresponding weft threads 4 form the tension layer 3. The weft threads 4 can consist of a metal fiber yarn, which consists only of Metal, or from a mixed yarn, which includes both metal fibers and plastic fibers. The weft 4 of all five Fabric layers are made of the same material. In order to achieve a high thermal resistance between the heat-resistant cover layer 1 and the tension layer 3, the five fabric layers are held together by self-binding, in that the warp threads of the five fabric layers partially engage in an adjacent fabric layer and loop their weft thread 4, as shown at position ld is. A high thermal resistance between the cover layer 1 and the tension layer 3 is of central importance in order to protect the high-strength yarn 3a, 3b, 3c used in the tension layer 3 from a high temperature. For example, the heat resistance of an aramid fiber is around 250 ° C. At higher temperatures, the aramid fiber is broken down into carbon and thus loses tensile strength. In contrast to the binding chain 6 shown in Figure 4, which forms a direct connection between the cover layer 1 and the tension layer 3 and, especially if the binding chain 6 consists of a metal, results in a correspondingly high heat transfer between these two layers, the Self-binding shown in Figure 1 only a connection to the immediately adjacent fabric layer. This increases the possibility of a high
Wärmetransportes zwischen der Deckschicht 1 und der Zugschicht 3 erheblich reduziert.Heat transport between the cover layer 1 and the tensile layer 3 is significantly reduced.
Ein weiterer Vorteil der Selbstbindung ist darin zu sehen, dass ein Gewebe beziehungsweise ein Förderband 5 mit einer hohen Dichte beziehungsweise mit einem grossen Volumengewicht herstellbar ist. Dies ermöglicht ein mechanisch robustes, hitzebeständiges Förderband 5 mit hohem Wärmewiderstand herzustellen. Im Unterschied zu dem in Figur 1 dargestellten Förderband 5 weist das in Figur 2 dargestellte Förderband 5 eine Deckschicht 1 mit vorstehenden Schlingen le auf, was eine frottiergewebeförmige Oberflächenstruktur ergibt. Die Kettfäden la, lb, lc bestehen aus einem dünnen Metalldraht, vorzugsweise mit einem Durchmesser zwischen 0.25 mm und 0.5 mm. Die Schiingenbildung kann dadurch erzeugt werden, dass beim Herstellen des Förderbandes 5, ähnlich wie beim Frottierweben, während dem Anschlagen des Schussfadens 4 zugleich ein Abschnitt des jeweiligen' Kettfadens la, lb, lc nachgeschoben wird, sodass dieser Abschnitt des Kettfadens la,lb, lc zu Schlingen le aufgestaucht wird, welche entsprechend aufgestellt werden. Das heisse, zu transportierende Fördergut liegt auf den Schlingen le auf. Auf Grund dieser Schlingen le weist das in Figur 2 dargestellte Förderband 5 einen besonders hohen Wärmewiderstand zwischen der durch die Schlingen le gebildeten Oberfläche und der Zugschicht 3 auf.Another advantage of self-binding can be seen in the fact that a fabric or a conveyor belt 5 can be produced with a high density or with a large volume weight. This enables a mechanically robust, heat-resistant conveyor belt 5 with a high thermal resistance to be produced. In contrast to the conveyor belt 5 shown in FIG. 1, the conveyor belt 5 shown in FIG. 2 has a cover layer 1 with projecting loops 1e, which results in a terry-cloth-like surface structure. The warp threads la, lb, lc consist of a thin metal wire, preferably with a diameter between 0.25 mm and 0.5 mm. The loop formation can be produced in that when the conveyor belt 5 is manufactured, similarly to terry weaving, while the weft thread 4 is struck, a section of the respective ' warp thread la, lb, lc is also pushed in, so that this section of the warp thread la, lb, lc up to loops le, which are set up accordingly. The hot material to be transported lies on the loops le. Because of these loops le, the conveyor belt 5 shown in FIG. 2 has a particularly high thermal resistance between the surface formed by the loops le and the tension layer 3.
Figur 3 zeigt ein Förderband 5 bestehend aus vier Gewebelagen, welche über eine Selbstbindung zusammengehalten sind, und eine hitzebeständige Deckschicht 1, eine isolierende Mittelschicht 2 sowie eine Zugschicht 3 ausbilden.Figure 3 shows a conveyor belt 5 consisting of four fabric layers, which are held together by a self-bond, and form a heat-resistant cover layer 1, an insulating middle layer 2 and a tension layer 3.
Figur 4 zeigt ein weiteres Ausführungsbeispiel eines Förderbandes 5, welches drei Gewebelagen aufweist, eine Deckschicht 1, eine Mittelschicht 2 sowie eine Zugschicht 3. Die drei Gewebelagen sind durch eine Bindekette 6 zusammengehalten. Zudem ist zwischen der Mittelschicht 2 und der Zugschicht 3 ein vorgespannter Längsfaden 7 eingewoben, welcher zur Verminderung von übermässiger Dehnung unter Zugspannung angeordnet ist. Dieser vorgespannte Längsfaden 7 könnte auch in dem in den Figuren 1, 2 und 3 dargestellten Förderband 5 angeordnet sein. Der Längsfaden 7 könnte auch an einer anderen Stelle im Förderband 5 in Längsrichtung verlaufend angeordnet sein. Der Längsfaden 7 ist vorzugsweise als eine sogenannte Stengelkette ausgebildet. Der Längsfaden 7 besteht aus einem hochfesten Garn wie Aramid.FIG. 4 shows a further exemplary embodiment of a conveyor belt 5 which has three fabric layers, a cover layer 1, a middle layer 2 and a tensile layer 3. The three fabric layers are held together by a binding chain 6. In addition, a pre-tensioned longitudinal thread 7 is woven between the middle layer 2 and the tension layer 3, which is arranged to reduce excessive stretching under tension. This prestressed longitudinal thread 7 could also be shown in FIGS. 1, 2 and 3 Conveyor belt 5 may be arranged. The longitudinal thread 7 could also be arranged at another point in the conveyor belt 5 running in the longitudinal direction. The longitudinal thread 7 is preferably designed as a so-called stem chain. The longitudinal thread 7 consists of a high tenacity yarn such as aramid.
Im Ausführungsbeispiel gemäss Figur 4 könnte auch auf den Längsfaden 7 verzichtet werden. Zudem könnte im Ausführungsbeispiel gemäss Figur 4 die Deckschicht 1 und/ oder die isolierende Mittelschicht 2 und/ oder die Zugschicht 3 aus mehr als einer Lage bestehen. Beispielsweise könnte die Deckschicht 1 zwei übereinander angeordnete Lagen mit Kettfäden la,lb aufweisen, welche durch die Bindekette 6 mit der Mittelschicht 2 und der Zugschicht 3 zusammengehalten sind.In the exemplary embodiment according to FIG. 4, the longitudinal thread 7 could also be dispensed with. In addition, in the exemplary embodiment according to FIG. 4, the cover layer 1 and / or the insulating middle layer 2 and / or the tensile layer 3 could consist of more than one layer. For example, the cover layer 1 could have two layers of warp threads 1 a, 1 b arranged one above the other, which are held together by the binding chain 6 with the middle layer 2 and the tension layer 3.
Das erfindungsgemässe Förderband 5 kann auch mehr als die in Figur 1 dargestellten fünf Gewebelagen umfassen.The conveyor belt 5 according to the invention can also comprise more than the five fabric layers shown in FIG. 1.
In allen dargestellten Ausführungsbeispielen könnten die Kettfäden la, lb, lc in einer vorteilhaften Ausführungsform bestehen aus einer Mischung von 50 bis 90 Gew.-% Fasern aus rostfreiem Stahl und von 10 bis 50 Gew.-% Fasern, die sich bei hoher Temperatur in Kohlenstoff zerlegen. In einer besonders vorteilhaften Ausgestaltung bestehen die Kettfäden la, lb, lc der Deckschicht 1 aus reinen Metallfasern. Als Metall ist beispielsweise das unter der Sachbezeichnung "INOX 316L" bekannte Metall geeignet.In all of the exemplary embodiments shown, the warp threads la, lb, lc could, in an advantageous embodiment, consist of a mixture of 50 to 90% by weight of stainless steel fibers and of 10 to 50% by weight of fibers which become carbon at high temperature disassemble. In a particularly advantageous embodiment, the warp threads la, lb, lc of the cover layer 1 consist of pure metal fibers. The metal known for example under the name "INOX 316L" is suitable as the metal.
Die Kettfäden der isolierenden Mittelschicht könnten beispielsweise aus einem Silikat-Fasergarn bestehen, welches aus texturierten oder gezwirnten Garnen mit einem Filamentdurchmesser von beispielsweise 6μm gefertigt ist. Das beispielhafte Silikat-Fasergarn besteht im wesentlichen aus ca. 61% Siθ2, ca. 22% CaO und ca. 13% Al O3. Das Hochtemperaturglasgarn oder Silikatgarn könnte auch ein Endlosgarn sein. The warp threads of the insulating middle layer could, for example, consist of a silicate fiber yarn, which is made of textured or twisted yarns with a filament diameter of, for example, 6 μm. The exemplary silicate fiber yarn consists essentially of approx. 61% SiO 2, approx. 22% CaO and approx. 13% Al O 3 . The high temperature glass yarn or silicate yarn could also be an endless yarn.
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2003201598A AU2003201598A1 (en) | 2002-02-01 | 2003-01-28 | Heat-resistant conveyor belt |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP02405068 | 2002-02-01 | ||
| EP02405068.4 | 2002-02-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2003031292A2 true WO2003031292A2 (en) | 2003-04-17 |
| WO2003031292A3 WO2003031292A3 (en) | 2003-07-03 |
Family
ID=8185808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CH2003/000070 Ceased WO2003031292A2 (en) | 2002-02-01 | 2003-01-28 | Heat-resistant conveyor belt |
Country Status (2)
| Country | Link |
|---|---|
| AU (1) | AU2003201598A1 (en) |
| WO (1) | WO2003031292A2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007054064A1 (en) * | 2005-11-08 | 2007-05-18 | Gkd - Gebr. Kufferath Ag | Woven fabric having weft wires |
| WO2011110220A1 (en) * | 2010-03-09 | 2011-09-15 | Mep-Olbo Gmbh | Conveyor belt |
| CN101786538B (en) * | 2010-02-09 | 2012-08-22 | 浙江国力纺织有限公司 | Process for producing core cloth of conveyor |
| CN103074039A (en) * | 2012-12-29 | 2013-05-01 | 王洪周 | Phase-changed chemical heat-absorbing material |
| US20150368793A1 (en) * | 2014-06-23 | 2015-12-24 | Von Ardenne Gmbh | Method for processing a substrate and processing arrangement for processing a substrate |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3843811A1 (en) * | 1988-12-24 | 1990-07-05 | Alwit Gmbh Produktions Und Han | Conveyor belt |
| DE9414344U1 (en) * | 1994-09-03 | 1994-10-20 | Mühlen Sohn GmbH & Co., 89134 Blaustein | Woven belt for a corrugated cardboard machine |
| EP0962565B1 (en) * | 1998-05-26 | 2001-03-07 | Ferlam Technologies | Conveyor belt for high temperature objects |
| US5975149A (en) * | 1998-08-11 | 1999-11-02 | Asten, Inc. | Multilayer press fabric including long floats of high temperature MD yarns in the paper support layer |
-
2003
- 2003-01-28 WO PCT/CH2003/000070 patent/WO2003031292A2/en not_active Ceased
- 2003-01-28 AU AU2003201598A patent/AU2003201598A1/en not_active Abandoned
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007054064A1 (en) * | 2005-11-08 | 2007-05-18 | Gkd - Gebr. Kufferath Ag | Woven fabric having weft wires |
| EP2116640A1 (en) * | 2005-11-08 | 2009-11-11 | Mediamesh GBR | Woven fabric with weft wires |
| US8056586B2 (en) | 2005-11-08 | 2011-11-15 | Gkd-Gebr. Kufferath Ag | Woven fabric comprising weft wires |
| US8726479B2 (en) | 2005-11-08 | 2014-05-20 | GKD—Gebr. Kufferath AG | Woven fabric comprising weft wires |
| CN101786538B (en) * | 2010-02-09 | 2012-08-22 | 浙江国力纺织有限公司 | Process for producing core cloth of conveyor |
| WO2011110220A1 (en) * | 2010-03-09 | 2011-09-15 | Mep-Olbo Gmbh | Conveyor belt |
| CN103074039A (en) * | 2012-12-29 | 2013-05-01 | 王洪周 | Phase-changed chemical heat-absorbing material |
| US20150368793A1 (en) * | 2014-06-23 | 2015-12-24 | Von Ardenne Gmbh | Method for processing a substrate and processing arrangement for processing a substrate |
| US9802763B2 (en) | 2014-06-23 | 2017-10-31 | Von Ardenne Gmbh | Transporting device, processing arrangement and coating method |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2003201598A1 (en) | 2003-04-22 |
| WO2003031292A3 (en) | 2003-07-03 |
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