EP4015954B1 - Textile sheet drying device - Google Patents
Textile sheet drying device Download PDFInfo
- Publication number
- EP4015954B1 EP4015954B1 EP20214410.1A EP20214410A EP4015954B1 EP 4015954 B1 EP4015954 B1 EP 4015954B1 EP 20214410 A EP20214410 A EP 20214410A EP 4015954 B1 EP4015954 B1 EP 4015954B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drying device
- textile
- textile sheet
- surface material
- sheet material
- 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.)
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Links
- 238000001035 drying Methods 0.000 title claims description 68
- 239000004753 textile Substances 0.000 title claims description 47
- 239000000463 material Substances 0.000 claims description 65
- 239000010410 layer Substances 0.000 claims description 21
- 230000005484 gravity Effects 0.000 claims description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 239000002346 layers by function Substances 0.000 claims description 6
- 230000004888 barrier function Effects 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims 1
- 239000010408 film Substances 0.000 description 17
- 230000005855 radiation Effects 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000011104 metalized film Substances 0.000 description 6
- 238000009413 insulation Methods 0.000 description 5
- 239000004744 fabric Substances 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000011888 foil Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001427 coherent effect Effects 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
- F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
- F26B13/14—Rollers, drums, cylinders; Arrangement of drives, supports, bearings, cleaning
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
- F26B13/005—Seals, locks, e.g. gas barriers for web drying enclosures
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- 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
- F26B25/008—Seals, locks, e.g. gas barriers or air curtains, for drying enclosures
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- 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
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- 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
- F26B25/066—Movable chambers, e.g. collapsible, demountable
Definitions
- the present invention relates to a textile web drying device with at least one heated drying cylinder and a thermal protection cover.
- Such a drying device is used to dry a textile web, which can be designed as a coherent textile material or as a sheet of threads. Such drying is often necessary if the textile web has been exposed to a liquor during sizing, dyeing or finishing.
- the textile web is passed over the at least one heated drying cylinder and lies against the drying cylinder.
- the drying cylinder heats the textile web so that the moisture can evaporate.
- a textile web drying device is from the DE 20 2018 102 456 U1 known.
- the invention is based on the object of keeping heat losses low in a cost-effective manner and ensuring good accessibility to the drying cylinder.
- the thermal insulation envelope As a bell that is open downwards in the direction of gravity.
- the bell surrounds at least part of the heated drying cylinder. Complete enclosure is not absolutely necessary. This keeps radiation losses small.
- the bell catches the warm air rising from the drying cylinder and thus keeps it in the area around the drying cylinder. Since the bell is open at the bottom, accessibility to the drying cylinder is also guaranteed.
- the thermal insulation cover does not form a completely closed enclosure.
- the thermal protection cover has a flexible surface material with an inside facing the drying cylinder.
- the sheet material is not rigid, but can be deformed, so that a worker who needs access to the drying cylinder can easily deform or displace the sheet material to gain access to the drying cylinder.
- the surface material at least largely prevents warm air from escaping from the environment of the drying cylinder. In addition, it is possible to use the surface material to keep the heat radiation from the surroundings of the drying cylinder to a minimum.
- the flexible surface material is connected to a clamping device. If the flexible surface material has a low inherent rigidity, it can happen that it is undesirably deformed by a draft in the production hall. Such a deformation can be kept small using the clamping device.
- the tensioning device can be formed in a simple manner by weights which are attached to the surface material in the area of the lower end of the surface material in the direction of gravity. It is also possible to connect the surface material to the floor using springs.
- the inside is preferably provided with a heat-reflecting layer.
- the heat reflection layer reflects heat radiation inwards.
- the heat reflection layer can be made relatively thin. It can, for example, be formed by a thin aluminum layer.
- the inside forms a moisture barrier. This ensures that the flexible surface material is not soaked by the warm air, which has a relatively high moisture content due to the moisture removal from the textile web.
- the flexible surface material can therefore be kept dry, which has a positive effect on its service life and is more pleasant for the worker if he has to gain access to the drying cylinder past the flexible surface material.
- the flexible surface material can preferably be resilient up to a continuous working temperature of at least 70° C. This means that the drying cylinder can also be operated at higher drying temperatures.
- the flexible surface material is preferably designed in multiple layers. In principle, it is sufficient if the flexible surface material is formed by a single layer, which can also be relatively thin. However, choosing several layers results in better design options.
- the flexible surface material preferably has a film and/or a textile material. Films and textile materials are sufficiently flexible.
- the flexible surface material may have a low air permeability and therefore does not have to be designed to be airtight. An exchange of air from the inside to the outside is not excluded, but it is strongly inhibited.
- the flexible surface material preferably has a carrier layer and at least one functional layer, in particular an aluminum-coated film on the inside.
- the carrier layer ensures the mechanical resilience of the flexible surface material.
- the functional layer ensures that heat radiation and heat transport through the surface material can be kept small. This is particularly the case with an aluminum-coated film.
- An aluminum-coated film reflects heat radiation and is sufficiently sealed against the passage of air. If you combine the functional layer with the carrier layer, you can tailor the functional layer exclusively to the desired task. It is not necessary to take its mechanical stability into account when designing the functional layer.
- the flexible surface material has a plurality of partially overlapping webs. This has the advantage that you can use sheets of flexible sheet material that have a limited width, which makes handling easier. If the panels overlap, the space surrounded by the thermal insulation cover is sufficiently sealed off from the outside. The partially overlapping panels also allow easy access to the drying cylinder.
- At least two adjacent tracks have a detachable connection arrangement.
- this ensures that the thermal protection cover can be kept closed during operation, but on the other hand it enables an access opening to be easily created when the connection arrangement is released.
- the releasable connection arrangement has a magnet and/or a spring clip.
- a magnet on one track then interacts with another magnet or an iron strip or an iron-containing strip on an adjacent track.
- the holding force exerted by the magnet is sufficient to hold adjacent tracks together.
- a device for winding, gathering or folding the flexible sheet material is preferably provided. If greater access to the cylinder drum is required for major maintenance work, the sheet material can be coiled, gathered or folded.
- the winding is expediently carried out against the direction of gravity, i.e. from bottom to top.
- the gathering or folding of the flexible sheet material can occur transversely to the direction of gravity can be done, for example, by hanging the surface material on a rail using sliders or rollers.
- the bell is provided with a suction device at the top in the direction of gravity, from which the flexible surface material hangs down.
- the suction device then not only has the task of extracting the air heated by the drying cylinder and enriched with moisture from the textile web, but it also serves as a carrier for the flexible surface material.
- a textile web drying device 1 has at least one drying cylinder 2 over which a textile web is guided in a manner not shown in order to dry the textile web.
- the textile web can already be present as a flat structure, i.e. as a woven, knitted or knitted web or as a fleece.
- the textile web can also be in the form of a group of threads.
- the drying cylinder 2 is heated.
- steam can be directed into the interior of the drying cylinder 2.
- the drying device 1 also has a thermal protection cover 3. Since the drying device is used to dry the textile web, when used as intended, a damp textile web is guided over the drying cylinder 2 and exposed to an increased temperature there. The increased temperature causes the moisture contained in the textile web to evaporate. However, the air in the area around the textile web and in the area around the drying cylinder also heats up. Furthermore, heat radiates from the drying cylinder 2 and from the textile web to the outside.
- the thermal insulation cover is intended to ensure that the associated heat loss and thus also the energy loss can be kept small.
- the heat protection cover 3 is designed as a bell that is open downwards in the direction of gravity.
- the heat protection cover has a suction device 4, which at the same time forms a support from which a flexible surface material 5 hangs downwards in the direction of gravity.
- the flexible surface material 5 surrounds the drying cylinder 2 on all sides running in the direction of gravity.
- the drying cylinder 2 is covered at the top (in the direction of gravity) by the suction device 4. There is no cover provided at the bottom.
- the drying device 1 can have at least one further drying cylinder 6, which is not covered by the flexible surface material 5. An inlet 7 for the drying device 1 is then formed here, through which the textile web can be fed.
- the suction device 4 has rails 9 on its long sides, on which the flexible surface material 5, which is arranged on the end faces of the drying cylinders 2, 6, can be moved using appropriate sliders, rollers or the like.
- the flexible surface material 5 expediently has several webs 10, 11 which at least partially overlap one another. If access to the drying cylinders 2, 6 is required, then, for example, a web 10 can be moved over the web 11.
- a web 12 of the surface material is arranged, which can be wound on the suction device 4 using a device (not shown) in order to enable greater access to this front side.
- the surface material 5 can have different designs.
- the surface material 5 only has an aluminum-coated film. This reflects heat that is generated inside the drying device 1 by the drying cylinder excellently inwards. It can be relatively thin, for example with a thickness of 20-100 ⁇ m. If the foil as a base material For example, polyester has a continuous operating temperature of over 100° C. The film is also moisture-resistant. This means that all functionally required boundary conditions for the surface material are met. However, such a film is so light and has such low inherent rigidity that it is an advantage if it can be tensioned. To tension it, it is sufficient to hang a few weights on the lower end of the film in the direction of gravity or to connect the film, for example via springs or rubber ropes, to the floor on which the drying device 1 stands.
- FIG. 2 A further design of the surface material 5 is shown schematically in Fig. 2 shown.
- the surface material 5 is designed in two layers. It has an inside 13 which faces the drying cylinders 2, 6 when used as intended.
- a metallized film 14 is arranged on the inside 13.
- a carrier layer 15 is arranged, which can be designed, for example, as a textile material.
- a textile fabric or textile knitted fabric is particularly suitable as a textile material.
- a needle felt can also be provided here.
- Fig. 3 shows a further possible embodiment of the surface material 5.
- a metallized film 14 is provided on the inside, which is connected to the carrier layer 15 on the side opposite the inside 13.
- the carrier layer 15 is provided with a further layer 16, which can be provided, for example, to improve the optics.
- a printed textile web can be provided here.
- the carrier layer 15 can in turn be a textile material, in particular in the form of a woven fabric, knitted fabric or needle felt.
- the metallized film 14 on the inside forms, on the one hand, a reflection layer in order to reflect heat radiation back into the interior of the drying device 1, and on the other hand also forms a moisture barrier so that the carrier layer 15 can remain dry.
- Fig. 4 shows a further design of the surface material 5.
- This design essentially corresponds to the design Fig. 3 , ie on the inside 13 a metallized film 14 is provided, which is connected to a carrier layer 15 made of a textile material.
- the carrier layer 15, which can be designed in particular as needle felt, woven or knitted fabric, is provided with a further layer 16 on the outside.
- the surface material 5 proves Fig. 4 a magnet 17, for example in the form of a magnetic film strip.
- Another magnet 18 or an iron-containing element, for example a ferritic foil strip, can be provided at the other end.
- This connection is stable enough to ensure cohesion during operation of the drying device 1. However, it can be easily solved by a worker who needs access to the interior of the drying device 1.
- a clip connection with a spring clip for example in the form of a push button, can also be provided.
Description
Die vorliegende Erfindung betrifft eine Textilbahn-Trocknungsvorrichtung mit mindestens einem beheizten Trockenzylinder und einer Wärmeschutzhülle.The present invention relates to a textile web drying device with at least one heated drying cylinder and a thermal protection cover.
Eine derartige Trocknungsvorrichtung wird verwendet, um eine Textilbahn, die als zusammenhängendes textiles Material oder auch als Fadenschar ausgebildet sein kann, zu trocknen. Ein derartiges Trocknen ist vielfach erforderlich, wenn die Textilbahn beim Schlichten, Färben oder Ausrüsten mit einer Flotte beaufschlagt worden ist.Such a drying device is used to dry a textile web, which can be designed as a coherent textile material or as a sheet of threads. Such drying is often necessary if the textile web has been exposed to a liquor during sizing, dyeing or finishing.
Die Textilbahn wird dabei über den mindestens einen beheizten Trockenzylinder geleitet und liegt dabei an dem Trockenzylinder an. Der Trockenzylinder erwärmt die Textilbahn, so dass die Feuchtigkeit verdampfen kann.The textile web is passed over the at least one heated drying cylinder and lies against the drying cylinder. The drying cylinder heats the textile web so that the moisture can evaporate.
Um den Energieverlust kleinzuhalten, ist es bekannt, eine Wärmeschutzhülle zu verwenden, die eine thermische Isolierung bildet. Damit kann der Wärmeverlust nach außen kleingehalten werden.In order to keep the energy loss small, it is known to use a heat protection cover that forms thermal insulation. This means that heat loss to the outside can be kept small.
Allerdings werden in der Textilindustrie Zylindertrockner mit einer Wärmeschutzhülle nur sehr vereinzelt verwendet. In der Mehrzahl der Anwendungen werden derartige Zylindertrockner bis heute komplett ohne jede Abschirmung vollkommen offen in einer Produktionshalle betrieben.However, cylinder dryers with a thermal protection cover are only used very occasionally in the textile industry. In the majority of applications, such cylinder dryers are still operated completely open in a production hall without any shielding.
Möglicherweise liegt dies daran, dass die Ausrüstung der Trocknungsvorrichtung mit einer Wärmeschutzhülle zum einen relativ hohe Investitionskosten erfordert und zum anderen die Zugänglichkeit zum Trockenzylinder erschwert. In der Textilindustrie ist die Zugänglichkeit aber ein Erfordernis, dem eine gewisse Wichtigkeit zukommt.This may be due to the fact that equipping the drying device with a heat protection cover requires relatively high investment costs and makes access to the drying cylinder more difficult. In the textile industry, however, accessibility is a requirement that is of certain importance.
Eine Textilbahn-Trocknungsvorrichtung gemäß dem Oberbegriff des Anspruchs 1 ist aus der
Der Erfindung liegt die Aufgabe zugrunde, auf kostengünstige Weise Wärmeverluste kleinzuhalten und eine gute Zugänglichkeit zum Trockenzylinder zu gewährleisten.The invention is based on the object of keeping heat losses low in a cost-effective manner and ensuring good accessibility to the drying cylinder.
Diese Aufgabe wird bei einer Textilbahn-Trocknungsvorrichtung der eingangs genannten Art dadurch gelöst, dass die Wärmeschutzhülle als Glocke ausgebildet ist, die in Schwerkraftrichtung nach unten offen ist.This task is achieved in a textile web drying device of the type mentioned in that the heat protection cover is designed as a bell which is open downwards in the direction of gravity.
Man geht bei dieser Ausbildung davon aus, dass die Wärme zum einen durch eine Wärmestrahlung in die Umgebung entweicht und zum anderen durch das Erwärmen von Luft, wobei die Luft aufsteigt. Beide Verlustarten kann man auf einfache Weise dadurch kleinhalten, dass man die Wärmeschutzhülle als Glocke ausbildet, die in Schwerkraftrichtung nach unten offen ist. Die Glocke umgibt dabei zumindest einen Teil des beheizten Trockenzylinders. Ein vollständiges Einschließen ist nicht unbedingt erforderlich. Damit werden Strahlungsverluste kleingehalten. Die Glocke fängt die von dem Trockenzylinder aufsteigende warme Luft auf und hält sie damit in der Umgebung des Trockenzylinders. Da die Glocke nach unten offen ist, ist auch die Zugänglichkeit zum Trockenzylinder gewährleistet. Die Wärmeschutzhülle bildet also keine komplett geschlossene Einhausung.This design assumes that the heat escapes into the environment through thermal radiation and through the heating of air, causing the air to rise. Both types of loss can be easily kept small by designing the thermal insulation envelope as a bell that is open downwards in the direction of gravity. The bell surrounds at least part of the heated drying cylinder. Complete enclosure is not absolutely necessary. This keeps radiation losses small. The bell catches the warm air rising from the drying cylinder and thus keeps it in the area around the drying cylinder. Since the bell is open at the bottom, accessibility to the drying cylinder is also guaranteed. The thermal insulation cover does not form a completely closed enclosure.
Die Wärmeschutzhülle weist ein flexibles Flächenmaterial mit einer dem Trockenzylinder zugewandten Innenseite auf. Das Flächenmaterial ist nicht starr, sondern kann verformt werden, so dass ein Werker, der einen Zugang zum Trockenzylinder benötigt, das Flächenmaterial auf einfache Weise verformen oder verlagern kann, um einen Zugang zum Trockenzylinder zu erhalten. Das Flächenmaterial verhindert zumindest weitgehend, dass warme Luft aus der Umgebung des Trockenzylinders entweicht. Darüber hinaus ist es möglich, mit dem Flächenmaterial auch die Wärmestrahlung aus der Umgebung des Trockenzylinders heraus kleinzuhalten.The thermal protection cover has a flexible surface material with an inside facing the drying cylinder. The sheet material is not rigid, but can be deformed, so that a worker who needs access to the drying cylinder can easily deform or displace the sheet material to gain access to the drying cylinder. The surface material at least largely prevents warm air from escaping from the environment of the drying cylinder. In addition, it is possible to use the surface material to keep the heat radiation from the surroundings of the drying cylinder to a minimum.
Vorzugsweise ist das flexible Flächenmaterial mit einer Spanneinrichtung verbunden. Wenn das flexible Flächenmaterial eine geringe Eigensteifigkeit aufweist, kann es vorkommen, dass es durch einen Luftzug in der Produktionshalle in unerwünschter Weise verformt wird. Eine derartige Verformung kann man durch die Spanneinrichtung kleinhalten. Die Spanneinrichtung kann auf einfache Weise durch Gewichte gebildet sein, die im Bereich des in Schwerkraftrichtung unteren Endes des Flächenmaterials am Flächenmaterial befestigt sind. Es ist auch möglich, das Flächenmaterial über Federn mit dem Fußboden zu verbinden.Preferably, the flexible surface material is connected to a clamping device. If the flexible surface material has a low inherent rigidity, it can happen that it is undesirably deformed by a draft in the production hall. Such a deformation can be kept small using the clamping device. The tensioning device can be formed in a simple manner by weights which are attached to the surface material in the area of the lower end of the surface material in the direction of gravity. It is also possible to connect the surface material to the floor using springs.
Vorzugsweise ist die Innenseite mit einer Wärme-Reflektionsschicht versehen. Die Wärme-Reflektionsschicht reflektiert Wärmestrahlung nach innen. Die Wärme-Reflektionsschicht kann hierbei relativ dünn ausgebildet sein. Sie kann beispielsweise durch ein dünne Aluminiumschicht gebildet sein.The inside is preferably provided with a heat-reflecting layer. The heat reflection layer reflects heat radiation inwards. The heat reflection layer can be made relatively thin. It can, for example, be formed by a thin aluminum layer.
Vorzugsweise bildet die Innenseite eine Feuchtigkeitsbarriere. Damit wird sichergestellt, dass das Flächenmaterial durch die warme Luft, die aufgrund der Feuchtigkeitsabfuhr von der Textilbahn eine relativ hohe Feuchtigkeit aufweist, das flexible Flächenmaterial nicht durchnässt. Das flexible Flächenmaterial kann also trocken gehalten werden, was sich günstig auf die Lebensdauer auswirkt und für den Werker angenehmer ist, wenn er sich am flexiblen Flächenmaterial vorbei einen Zugang zum Trockenzylinder verschaffen muss.Preferably the inside forms a moisture barrier. This ensures that the flexible surface material is not soaked by the warm air, which has a relatively high moisture content due to the moisture removal from the textile web. The flexible surface material can therefore be kept dry, which has a positive effect on its service life and is more pleasant for the worker if he has to gain access to the drying cylinder past the flexible surface material.
Vorzugsweise ist das flexible Flächenmaterial bis zu einer Dauer-Arbeitstemperatur von mindestens 70° C belastbar. Damit kann man den Trockenzylinder auch mit höheren Trocknungstemperaturen betreiben.The flexible surface material can preferably be resilient up to a continuous working temperature of at least 70° C. This means that the drying cylinder can also be operated at higher drying temperatures.
Vorzugsweise ist das flexible Flächenmaterial mehrschichtig ausgebildet. Zwar reicht es im Prinzip aus, wenn das flexible Flächenmaterial durch eine einzige Schicht gebildet ist, die auch relativ dünn sein kann. Die Wahl von mehreren Schichten ergibt aber bessere Gestaltungsmöglichkeiten.The flexible surface material is preferably designed in multiple layers. In principle, it is sufficient if the flexible surface material is formed by a single layer, which can also be relatively thin. However, choosing several layers results in better design options.
Vorzugsweise weist das flexible Flächenmaterial eine Folie und/oder ein textiles Material auf. Folien und textile Materialien sind ausreichend flexibel. Das flexible Flächenmaterial darf dabei eine geringe Luftpermeabilität aufweisen, muss also nicht luftdicht ausgestaltet sein. Ein Luftaustausch von innen nach außen ist damit nicht ausgeschlossen, aber stark gehemmt.The flexible surface material preferably has a film and/or a textile material. Films and textile materials are sufficiently flexible. The flexible surface material may have a low air permeability and therefore does not have to be designed to be airtight. An exchange of air from the inside to the outside is not excluded, but it is strongly inhibited.
Vorzugsweise weist das flexible Flächenmaterial eine Trägerschicht und mindestens eine Funktionsschicht, insbesondere eine aluminiumbedampfte Folie an der Innenseite, auf. Die Trägerschicht stellt dabei die mechanische Belastbarkeit des flexiblen Flächenmaterials sicher. Die Funktionsschicht sorgt dafür, dass die Wärmestrahlung und der Wärmetransport durch das Flächenmaterial hindurch kleingehalten werden kann. Dies ist insbesondere bei einer aluminiumbedampften Folie der Fall. Eine aluminiumbedampfte Folie reflektiert Wärmestrahlung und ist gegenüber einem Luftdurchgang ausreichend dicht. Wenn man die Funktionsschicht mit der Trägerschicht kombiniert, kann man die Funktionsschicht ausschließlich auf die gewünschte Aufgabe hin abstimmen. Man muss bei der Ausgestaltung der Funktionsschicht nicht ihre mechanische Stabilität berücksichtigen.The flexible surface material preferably has a carrier layer and at least one functional layer, in particular an aluminum-coated film on the inside. The carrier layer ensures the mechanical resilience of the flexible surface material. The functional layer ensures that heat radiation and heat transport through the surface material can be kept small. This is particularly the case with an aluminum-coated film. An aluminum-coated film reflects heat radiation and is sufficiently sealed against the passage of air. If you combine the functional layer with the carrier layer, you can tailor the functional layer exclusively to the desired task. It is not necessary to take its mechanical stability into account when designing the functional layer.
Vorzugsweise weist das flexible Flächenmaterial mehrere einander teilweise überlappende Bahnen auf. Dies hat den Vorteil, dass man Bahnen des flexiblen Flächenmaterials verwenden kann, die eine begrenzte Breite aufweisen, was die Handhabung erleichtert. Wenn sich die Bahnen überlappen, wird der von der Wärmeschutzhülle umgebende Raum ausreichend nach außen abgeschlossen. Die teilweise überlappenden Bahnen erlauben auch eine leichte Zugänglichkeit zum Trockenzylinder.Preferably, the flexible surface material has a plurality of partially overlapping webs. This has the advantage that you can use sheets of flexible sheet material that have a limited width, which makes handling easier. If the panels overlap, the space surrounded by the thermal insulation cover is sufficiently sealed off from the outside. The partially overlapping panels also allow easy access to the drying cylinder.
Vorzugsweise weisen zumindest zwei benachbarte Bahnen eine lösbare Verbindungsanordnung auf. Dies stellt zum einen sicher, dass die Wärmeschutzhülle im Betrieb geschlossen gehalten werden kann, ermöglicht aber zum anderen auf einfache Weise die Herstellung einer Zugangsöffnung, wenn die Verbindungsanordnung gelöst wird.Preferably, at least two adjacent tracks have a detachable connection arrangement. On the one hand, this ensures that the thermal protection cover can be kept closed during operation, but on the other hand it enables an access opening to be easily created when the connection arrangement is released.
Vorzugsweise weist die lösbare Verbindungsanordnung einen Magneten und/oder einen Federclip auf. Ein Magnet an einer Bahn wirkt dann mit einem anderen Magneten oder einem Eisenstreifen oder einem eisenhaltigen Streifen an einer benachbarten Bahn zusammen. Die von dem Magneten ausgeübte Haltekraft reicht aus, um benachbarte Bahnen zusammenzuhalten. Alternativ kann man auch einen Federclip verwenden, der dann mit einem entsprechenden Gegenstück an der benachbarten Bahn in Eingriff kommt, beispielsweise nach Art eines Druckknopfes.Preferably, the releasable connection arrangement has a magnet and/or a spring clip. A magnet on one track then interacts with another magnet or an iron strip or an iron-containing strip on an adjacent track. The holding force exerted by the magnet is sufficient to hold adjacent tracks together. Alternatively, you can also use a spring clip, which then engages with a corresponding counterpart on the adjacent track, for example in the manner of a push button.
Vorzugsweise ist eine Einrichtung zum Aufwickeln, Raffen oder Falten des flexiblen Flächenmaterials vorgesehen. Wenn bei größeren Wartungsarbeiten ein größerer Zugang zur Zylindertrommel erforderlich ist, kann man das Flächenmaterial aufwickeln, Raffen oder Falten. Das Aufwickeln erfolgt zweckmäßigerweise entgegen der Schwerkraftrichtung, also von unten nach oben. Das Raffen oder Falten des flexiblen Flächenmaterials kann quer zur Schwerkraftrichtung erfolgen, beispielsweise dadurch, dass man das Flächenmaterial über Gleiter oder Rollen an einer Schiene aufhängt.A device for winding, gathering or folding the flexible sheet material is preferably provided. If greater access to the cylinder drum is required for major maintenance work, the sheet material can be coiled, gathered or folded. The winding is expediently carried out against the direction of gravity, i.e. from bottom to top. The gathering or folding of the flexible sheet material can occur transversely to the direction of gravity can be done, for example, by hanging the surface material on a rail using sliders or rollers.
Die Glocke ist in Schwerkraftrichtung oben mit einer Absaugeinrichtung versehen, von der das flexible Flächenmaterial herabhängt. Die Absaugeinrichtung hat dann nicht nur die Aufgabe, die vom Trockenzylinder erwärmte und von der Textilbahn mit Feuchtigkeit angereicherte Luft abzusaugen, sondern sie dient auch als Träger für das flexible Flächenmaterial.The bell is provided with a suction device at the top in the direction of gravity, from which the flexible surface material hangs down. The suction device then not only has the task of extracting the air heated by the drying cylinder and enriched with moisture from the textile web, but it also serves as a carrier for the flexible surface material.
Die Erfindung wird im Folgenden anhand eines bevorzugten Ausführungsbeispiels beschrieben. Darin zeigen:
- Fig. 1
- eine schematische Darstellung einer Textilbahn-Trocknungsvorrichtung,
- Fig. 2
- eine schematische Darstellung zur Erläuterung einer ersten Ausführungsform eines flexiblen Flächenmaterials,
- Fig. 3
- eine schematische Darstellung zur Erläuterung einer zweiten Ausführungsform eines flexiblen Flächenmaterials, und
- Fig. 4
- eine schematische Darstellung einer dritten Ausführungsform eines flexiblen Flächenmaterials.
- Fig. 1
- a schematic representation of a textile web drying device,
- Fig. 2
- a schematic representation to explain a first embodiment of a flexible surface material,
- Fig. 3
- a schematic representation to explain a second embodiment of a flexible surface material, and
- Fig. 4
- a schematic representation of a third embodiment of a flexible surface material.
Eine Textilbahn-Trocknungsvorrichtung 1 weist mindestens einen Trockenzylinder 2 auf, über den in einer nicht näher dargestellten Weise eine Textilbahn geführt wird, um die Textilbahn zu trocknen. Die Textilbahn kann dabei bereits als Flächengebilde vorliegen, also als gewebte, gewirkte oder gestrickte Bahn oder als Vlies. Die Textilbahn kann aber auch in Form einer Fadenschar vorliegen.A textile web drying device 1 has at least one drying cylinder 2 over which a textile web is guided in a manner not shown in order to dry the textile web. The textile web can already be present as a flat structure, i.e. as a woven, knitted or knitted web or as a fleece. The textile web can also be in the form of a group of threads.
Der Trockenzylinder 2 ist beheizt. Hierzu kann man beispielsweise Dampf in das Innere des Trockenzylinders 2 leiten.The drying cylinder 2 is heated. For this purpose, for example, steam can be directed into the interior of the drying cylinder 2.
Die Trocknungsvorrichtung 1 weist weiterhin eine Wärmeschutzhülle 3 auf. Da die Trocknungsvorrichtung zum Trocknen der Textilbahn dient, wird im bestimmungsgemäßen Gebrauch eine feuchte Textilbahn über den Trockenzylinder 2 geführt und dort mit erhöhter Temperatur beaufschlagt. Die erhöhte Temperatur führt dazu, dass die in der Textilbahn enthaltene Feuchtigkeit verdampft. Dabei erwärmt sich aber auch die Luft in der Umgebung der Textilbahn und in der Umgebung des Trockenzylinders. Weiterhin strahlt Wärme vom Trockenzylinder 2 und von der Textilbahn nach außen ab. Die Wärmeschutzhülle soll dafür sorgen, dass der damit verbundene Wärmeverlust und damit auch der Energieverlust kleingehalten werden kann.The drying device 1 also has a thermal protection cover 3. Since the drying device is used to dry the textile web, when used as intended, a damp textile web is guided over the drying cylinder 2 and exposed to an increased temperature there. The increased temperature causes the moisture contained in the textile web to evaporate. However, the air in the area around the textile web and in the area around the drying cylinder also heats up. Furthermore, heat radiates from the drying cylinder 2 and from the textile web to the outside. The thermal insulation cover is intended to ensure that the associated heat loss and thus also the energy loss can be kept small.
Die Wärmeschutzhülle 3 ist als Glocke ausgebildet, die in Schwerkraftrichtung nach unten offen ist. Die Wärmeschutzhülle weist eine Absaugeinrichtung 4 auf, die gleichzeitig einen Träger bildet, von dem ein flexibles Flächenmaterial 5 in Schwerkraftrichtung nach unten hängt.The heat protection cover 3 is designed as a bell that is open downwards in the direction of gravity. The heat protection cover has a suction device 4, which at the same time forms a support from which a
Das flexible Flächenmaterial 5 umgibt den Trockenzylinder 2 an allen in Schwerkraftrichtung verlaufenden Seiten. Nach oben (in Schwerkraftrichtung) ist der Trockenzylinder 2 durch die Absaugeinrichtung 4 abgedeckt. Nach unten ist keine Abdeckung vorgesehen.The
Die Trocknungsvorrichtung 1 kann mindestens einen weiteren Trockenzylinder 6 aufweisen, der vom flexiblen Flächenmaterial 5 nicht abgedeckt wird. Hier ist dann ein Einlass 7 für die Trocknungsvorrichtung 1 gebildet, durch den die Textilbahn zugeführt werden kann.The drying device 1 can have at least one further drying
Es ist möglich, das flexible Flächenmaterial 5 an den Stirnseiten des oder der Trockenzylinder 2, 6 in Schwerkraftrichtung weiter nach unten zu verlängern als an der Seite, an der der Eingang 7 vorgesehen ist. Es ist aber auch möglich, hier andere Einrichtungen zur Verhinderung einer Wärmeabstrahlung vorzusehen, beispielsweise Türen 8.It is possible to extend the
Die Absaugeinrichtung 4 weist an ihren Längsseiten Schienen 9 auf, an denen das flexible Flächenmaterial 5, das an den Stirnseiten der Trockenzylinder 2, 6 angeordnet ist, über entsprechende Gleiter, Rollen oder dergleichen verschoben werden kann. Hierzu weist das flexible Flächenmaterial 5 zweckmäßigerweise mehrere Bahnen 10, 11 auf, die einander zumindest teilweise überlappen. Wenn eine Zugänglichkeit zu den Trockenzylindern 2, 6 erforderlich ist, dann kann beispielsweise eine Bahn 10 über die Bahn 11 verschoben werden.The suction device 4 has rails 9 on its long sides, on which the
An der Stirnseite der Absaugeinrichtung 4 ist eine Bahn 12 des Flächenmaterials angeordnet, die mit einer nicht dargestellten Vorrichtung an der Absaugeinrichtung 4 aufgewickelt werden kann, um an dieser Stirnseite einen größeren Zugang zu ermöglichen.On the front side of the suction device 4, a
Es ist auch möglich, die Bahnen 10-12 zu falten oder zu raffen, wenn man einen Zugang zu den Trockenzylindern 2, 6 oder allgemein zum Inneren der Trocknungsvorrichtung 1 benötigt.It is also possible to fold or gather the panels 10-12 if one needs access to the drying
Das Flächenmaterial 5 kann unterschiedliche Ausgestaltungen aufweisen.The
Bei einem Aufbau, der einen minimalen Aufwand erfordert, weist das Flächenmaterial 5 lediglich eine Aluminium-beschichtete Folie auf. Diese reflektiert Wärme, die im Inneren der Trocknungsvorrichtung 1 durch den Trockenzylinder entsteht, hervorragend nach innen. Sie kann relativ dünn ausgebildet sein, beispielsweise mit einer Dicke von 20-100 µm. Wenn die Folie als Grundstoff beispielsweise Polyester aufweist, ist eine Dauereinsatztemperatur von über 100° C möglich. Die Folie ist zudem feuchtebeständig. Somit sind alle funktional erforderlichen Randbedingungen für das Flächenmaterial erfüllt. Allerdings ist eine derartige Folie so leicht und weist eine so geringe Eigensteifigkeit auf, dass es von Vorteil ist, wenn man sie spannen kann. Zum Spannen reicht es aus, wenn man einige Gewichte an das in Schwerkraftrichtung untere Ende der Folie hängt oder die Folie beispielsweise über Federn oder Gummiseile mit dem Fußboden verbindet, auf dem die Trocknungsvorrichtung 1 aufsteht.In a structure that requires minimal effort, the
Eine weitere Ausbildung des Flächenmaterials 5 ist schematisch in
Als Trägerschicht 15 kann man wiederum ein textiles Material, insbesondere in Form eines Gewebes, Gewirkes oder Nadelvlieses vorsehen.The
Die metallisierte Folie 14 an der Innenseite bildet wiederum einerseits eine Reflektionsschicht, um Wärmestrahlung wieder zurück in das Innere der Trocknungsvorrichtung 1 zu reflektieren, andererseits auch eine Feuchtigkeitssperre, so dass die Trägerschicht 15 trocken bleiben kann.The metallized
Zusätzlich weist das Flächenmaterial 5 nach
Anstelle der "Magnetanordnung" mit dem magnetischen Folienstreifen 17 und dem magnetischen oder ferritischen Folienstreifen 18 kann man auch eine Clipverbindung mit einem Federclip, beispielsweise in Form eines Druckknopfes, vorsehen.Instead of the “magnet arrangement” with the
Claims (12)
- Textile sheet drying device (1) with at least one heated drying cylinder (2) and a thermal protection cover (3) which is designed as a bell, which is open downwards in the direction of gravity and is provided with a suction device (4) at the top in the direction of gravity, characterized in that that the thermal protection cover (3) comprises a flexible sheet material (5) with an inner surface (13) facing towards the drying cylinder (2), which hangs down from the suction device (4).
- Textile sheet drying device according to claim 1, wherein the flexible sheet material (5) is connected to a tensioning device.
- Textile sheet drying device according to claim 1 or 2, wherein the inner surface (13) is provided with a heat reflection layer.
- Textile sheet drying device according to one of claims 1 to 3, wherein the inner surface (13) forms a moisture barrier.
- Textile sheet drying device according to one of claims 1 to 4, wherein the flexible sheet material (5) can be subjected to a continuous working temperature of at least 70°C.
- Textile sheet drying device according to one of claims 1 to 5, wherein the flexible sheet material (5) is designed in the form of multiple layers.
- Textile sheet drying device according to one of claims 1 to 6, wherein the flexible sheet material (5) has a film (14) and/or a textile material (15).
- Textile sheet drying device according to claim 6 or 7, wherein the flexible sheet material (5) has a backing layer and at least one functional layer, in particular a vaporised aluminium film on the inner surface.
- Textile sheet drying device according to one of claims 1 to 38 wherein the flexible sheet material (5) has a plurality of partially overlapping webs (11, 12).
- Textile sheet drying device according to one of claims 1 to 9, wherein at least two adjacent webs (11, 12) have a releasable connection arrangement.
- Textile sheet drying device according to Claim 10, wherein the releasable connection arrangement has a magnet (17) and/or a spring clip.
- Textile sheet drying device according to one of claims 1 to 11, wherein a device for winding, gathering, or folding the flexible sheet material (5) is provided.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20214410.1A EP4015954B1 (en) | 2020-12-16 | 2020-12-16 | Textile sheet drying device |
CN202110352930.3A CN114636297A (en) | 2020-12-16 | 2021-03-31 | Fabric web drying device |
TW110145926A TW202315996A (en) | 2020-12-16 | 2021-12-08 | Textile web drying device |
JP2021201142A JP7323595B2 (en) | 2020-12-16 | 2021-12-10 | fiber web dryer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20214410.1A EP4015954B1 (en) | 2020-12-16 | 2020-12-16 | Textile sheet drying device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP4015954A1 EP4015954A1 (en) | 2022-06-22 |
EP4015954B1 true EP4015954B1 (en) | 2024-02-28 |
Family
ID=74175565
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20214410.1A Active EP4015954B1 (en) | 2020-12-16 | 2020-12-16 | Textile sheet drying device |
Country Status (4)
Country | Link |
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EP (1) | EP4015954B1 (en) |
JP (1) | JP7323595B2 (en) |
CN (1) | CN114636297A (en) |
TW (1) | TW202315996A (en) |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2824383A (en) * | 1952-04-17 | 1958-02-25 | Joseph Dvorak | Apparatus and method for electrically heating wet porous sheets |
GB773908A (en) * | 1954-01-12 | 1957-05-01 | Borje Valentin Leckner | Paper-drying apparatus |
CH471359A (en) * | 1968-06-10 | 1969-04-15 | Benninger Ag Maschf | A device upstream of a contact drum dryer for pre-drying a chain of fabric continuously fed to the drum dryer by means of hot air |
SU949302A2 (en) * | 1978-12-13 | 1982-08-07 | Центральный научно-исследовательский институт промышленности лубяных волокон | Drying installation |
JPS5747995A (en) * | 1980-09-05 | 1982-03-19 | Sasakura Eng Co Ltd | Heat recovery from drying part of papermaking machine |
JPS60132499U (en) * | 1984-02-15 | 1985-09-04 | 製紙技術研究組合 | Paper machine drying section hood |
JPS6115494U (en) * | 1984-07-03 | 1986-01-29 | 横浜ゴム株式会社 | Heat generating curtain for drying room |
WO1995025456A1 (en) * | 1994-03-23 | 1995-09-28 | Rockland Industries, Inc. | Magnetic sealing strips for draperies and linings |
DE19524438A1 (en) * | 1995-07-05 | 1997-01-09 | Sucker Mueller Hacoba Gmbh | Drying of yarn sheets esp. warps after sizing - uses inclined yarn path with tension sensing roller integrated into heating arrangement to give good access and save space |
DE10047663A1 (en) * | 2000-09-26 | 2002-04-11 | Voith Paper Patent Gmbh | Drying station, for a wet paper web, has a series of rollers in succession to give a pure air drying action on the web to reduce the draw forces on it as it passes through the drying stage(s) |
JP2007170716A (en) | 2005-12-20 | 2007-07-05 | Tokuoka Plant:Kk | Drying device for printed matter |
DE102006040508A1 (en) * | 2006-08-30 | 2008-03-13 | Voith Patent Gmbh | Paper mill drying station for wet web of paper, carton or tissue paper. Has hot air or steam impingement section and drying belt |
EP3037156A1 (en) * | 2014-12-22 | 2016-06-29 | Gambro Lundia AB | On-line drying of hollow fiber membranes |
CN104976879B (en) * | 2015-06-24 | 2018-05-04 | 亿和精密工业(苏州)有限公司 | Infrared drier |
FI11691U1 (en) * | 2017-05-05 | 2017-06-09 | Valmet Technologies Oy | Lift wall element for the cap of a fiber web machine's cylinder wiper portion and cap for a fiber web machine's cylinder wiper portion |
CN111380342B (en) * | 2020-03-18 | 2021-10-08 | 安徽明达外加剂有限公司 | Drying treatment method for concrete additive |
-
2020
- 2020-12-16 EP EP20214410.1A patent/EP4015954B1/en active Active
-
2021
- 2021-03-31 CN CN202110352930.3A patent/CN114636297A/en active Pending
- 2021-12-08 TW TW110145926A patent/TW202315996A/en unknown
- 2021-12-10 JP JP2021201142A patent/JP7323595B2/en active Active
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CN114636297A (en) | 2022-06-17 |
JP2022095562A (en) | 2022-06-28 |
TW202315996A (en) | 2023-04-16 |
EP4015954A1 (en) | 2022-06-22 |
JP7323595B2 (en) | 2023-08-08 |
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