CN114636297A - Fabric web drying device - Google Patents
Fabric web drying device Download PDFInfo
- Publication number
- CN114636297A CN114636297A CN202110352930.3A CN202110352930A CN114636297A CN 114636297 A CN114636297 A CN 114636297A CN 202110352930 A CN202110352930 A CN 202110352930A CN 114636297 A CN114636297 A CN 114636297A
- Authority
- CN
- China
- Prior art keywords
- web
- flexible
- web drying
- drying apparatus
- surface 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.)
- Pending
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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
-
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Drying Of Solid Materials (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
The invention relates to a web drying device (1) comprising at least one heated drying cylinder (2) and a heat shield (3). It is desirable to keep the heat losses small and to ensure good accessibility to the drying cylinder (2) in a cost-effective manner. The heat protection shield (3) is designed as a bell which is open downward in the direction of gravity.
Description
Technical Field
The invention relates to a web drying device with at least one heated drying cylinder and a heat shield.
Background
Such drying devices are used for drying textile materials which can be designed to be suspended together or fabric webs which are likewise designed as yarn webs (textile webs, sometimes referred to as clothing webs). Such drying is required many times when the textile web is to be applied with a dye liquor (flowte) in the case of sizing, dyeing or finishing (auser ü sten).
The fabric web is guided through the at least one heated drying cylinder and is in contact with the drying cylinder. The drying cylinder heats the web of fabric so that the steam can evaporate.
In order to keep the energy losses small, it is known to use heat shields, which form thermal insulation. Thus, the heat loss to the outside can be kept small.
However, in the textile industry, cylinder dryers with heat shields are used only very individually. In most uses, such cylinder dryers have hitherto been operated in a workshop completely open without any shielding at all.
This is possible because equipping the drying device with a heat shield requires, on the one hand, relatively high investment costs and, on the other hand, makes access to the drying cylinder difficult. In the textile industry, however, accessibility is a requirement of certain importance.
Disclosure of Invention
The invention is based on the following tasks: the heat losses are kept small in a cost-effective manner and good accessibility to the drying cylinder is ensured.
This object is achieved in the case of a web drying device of the type mentioned at the outset in that the heat shield is designed as a bell which opens downward in the direction of gravity.
The construction scheme is based on the following points: the heat escapes into the surroundings by thermal radiation on the one hand and by heating of the air (in which the air rises) on the other hand. Both loss types can be kept small in a simple manner by configuring the heat shield as a bell which opens downward in the direction of gravity. The bell here surrounds at least a part of the heated drying cylinder. A complete enclosure is not necessarily required. Thereby, radiation losses are kept small. The bell captures the hot air rising from the drying cylinder and thus keeps it in the surroundings of the drying cylinder. Since the bell is open downwards, the accessibility to the drying cylinder is likewise ensured. The heat shield therefore does not form a completely closed envelope.
Preferably, the heat shield has a flexible surface material with an inner side facing the drying cylinder. The face material is not hard but deformable so that a worker who needs to enter the drying cylinder can deform or displace the face material in a simple manner in order to gain access to the drying cylinder. The surface material at least prevents as far as possible the escape of hot air from the surroundings of the drying cylinder. Furthermore, it is possible to keep the heat radiation from the surroundings of the drying cylinder low with the surface material as well.
Preferably, the flexible face material is suspended downwardly from the carrier in the direction of gravity. The carrier can be constructed to be rigid, for example in the form of a cover made of metal or another stable material. The carrier is arranged above the drying cylinder in the direction of gravity and therefore does not form a barrier against entry into the drying cylinder. The flexible surface material does not need to be supported below in the direction of gravity. It is sufficient that it hangs down from the carrier.
Preferably, the flexible surface material is connected to the tensioning device. This can occur if the flexible surface material has a low inherent rigidity, which is deformed in an undesirable manner by the air flow in the plant. Such deformations can be kept small by the tensioning device. The tensioning device can be formed in a simple manner by a weight which is fixed to the surface material in the region of the end of the surface material lying below in the direction of gravity. It is also possible that the surface material is connected to the base via a spring.
Preferably, the inner side is provided with a heat reflective layer. The heat reflective layer reflects heat radiation inwardly. The heat-reflecting layer can be of relatively thin construction. The heat reflective layer may be formed, for example, by a thin aluminum layer.
Preferably, the inner side forms a moisture barrier. It is thus ensured that the flexible surface material is not wetted through by the hot air (which has a relatively high humidity due to the moisture transported out of the textile web). The flexible surface material can thus be kept dry, which has a favourable effect on the service life and is more comfortable for the worker when he has to pass the flexible surface material to gain access to the drying cylinder.
Preferably, the flexible face material is loadable up to a continuous working temperature of at least 70 ℃. The drying cylinder can therefore also be operated at a higher drying temperature.
Preferably, the flexible surface material is constructed in multiple layers. It is even sufficient in principle for the flexible surface material to be formed by a single layer, which can likewise be relatively thin. The choice of multiple layers but gives better design possibilities.
Preferably, the flexible surface material has a film and/or a textile material. The film and textile material are sufficiently flexible. The flexible surface material should have a low air permeability and therefore not have to be designed to be air-tight. The air exchange from the inside to the outside is therefore not excluded, but is strongly impeded.
Preferably, the flexible surface material has a carrier layer and at least one functional layer, in particular an aluminum vapor-deposited (aluminum vapor deposited) film on the inside. The carrier layer ensures the mechanical loadability of the flexible surface material. The functional layer is responsible for this, i.e. the heat radiation and heat transport through the surface material can be kept small. This is the case in particular in the case of films of aluminum vapor-deposited metal. The aluminum vapor-deposited film reflects thermal radiation and is sufficiently sealed against air penetration. When combining the functional layer with the carrier layer, the functional layer can be made to merely coordinate the desired task. The mechanical stability of the functional layer does not have to be taken into account in the design thereof.
Preferably, the flexible face material has a plurality of webs which partially overlap one another. This has the following advantages: a web of flexible web material having a limited width can be used, which simplifies handling. When the webs overlap, the space enclosed by the heat protection shield is closed sufficiently outwards. The partially overlapping webs also allow simple accessibility to the drying cylinder.
Preferably, at least two adjacent webs have releasable connecting members. This ensures that the heat shield can be kept closed during operation, but on the other hand makes it possible to produce the access opening in a simple manner when the connecting assembly is released.
Preferably, the releasable connecting assembly has a magnet and/or a resilient clip. The magnet at a web then co-acts with another magnet or iron or ferrous strip at an adjacent web. The holding force loaded by the magnets is sufficient to hold adjacent webs together. Alternatively, spring clips can also be used, which then engage with corresponding counterparts at the adjacent webs, for example in the manner of buttons.
Preferably, a device for rolling up, lifting up or folding the flexible web material is provided. When greater access to the drum is required in greater maintenance work, the face material can be rolled up, lifted or folded. The rolling-up expediently takes place counter to the direction of gravity, i.e. from the bottom upwards. The lifting or folding of the flexible web material can take place transversely to the direction of gravity, for example by the web material being suspended at a rail via slides or rollers.
Preferably, the bell is provided with a suction device above in the direction of gravity, from which the flexible surface material hangs down. The suction device then has the task of not only sucking the air which is heated by the drying cylinder and is enriched with moisture from the fabric web, but also of using it as a carrier for the flexible surface material.
Drawings
The invention is described below with the aid of preferred embodiments. Wherein:
figure 1 shows a schematic view of a web drying apparatus,
figure 2 shows a schematic view for explaining a first embodiment of a flexible face material,
FIG. 3 shows a schematic diagram for explaining a second embodiment of a flexible face material, an
Fig. 4 shows a schematic representation of a third embodiment of a flexible surface material.
Detailed Description
The web drying device 1 has at least one drying cylinder 2, through which the web is guided in a manner not shown in more detail, in order to dry the web. The textile web can already be present here as an open-width structure (Fl ä chengbilde), i.e. as a woven, knitted or knitted web or as a nonwoven (Vlies). The fabric web may however also be present in the form of a sliver.
The drying cylinder 2 is heated. For this purpose, for example, steam can be guided into the interior of the drying cylinder 2.
The drying device 1 furthermore has a heat shield 3. Since the drying device serves for drying the fabric web, the wet fabric web is guided through the drying cylinder 2 in use according to the regulations and is subjected to an elevated temperature there. The increased temperature causes the moisture contained in the fabric web to evaporate. Here, however, the air in the surroundings of the fabric web and of the drying cylinder is likewise heated. In addition, heat is radiated from the drying cylinder 2 and from the web of fabric outward. The heat shield is responsible for this, i.e. the heat losses and thus also the energy losses associated therewith can be kept small.
The heat shield 3 is designed as a bell which opens downward in the direction of gravity. The heat shield has a suction device 4 of the type: the suction device simultaneously forms a carrier from which the flexible web material 5 hangs down in the direction of gravity.
The flexible surface material 5 surrounds the drying cylinder 2 on all sides extending in the direction of gravity. The drying cylinder 2 is covered upwards (in the direction of gravity) by a suction device 4. There is no cover provided downwards.
The drying device 1 can have at least one further drying cylinder 6 which is not covered by the flexible surface material 5. Here, an inlet 7 for the drying device 1 is then formed, through which the fabric web can be supplied.
It is possible that the flexible surface material 5 is extended further downwards in the direction of gravity at the end sides of the drying cylinder or cylinders 2,6 than at the side at which the feed 7 is arranged. However, it is also possible to provide other devices for blocking the heat radiation, for example the door 8.
The suction device 4 has rails 9 on its longitudinal sides, at which the flexible surface material 5 arranged on the end sides of the drying cylinders 2,6 can be moved via corresponding slides, rollers or the like. The flexible surface material 5 expediently has a plurality of webs 10,11, which at least partially overlap one another. When accessibility to the drying cylinders 2,6 is required, the web 10 may then for example be moved onto the web 11.
At the end side of the suction device 4, a web 12 of the surface material is arranged, which can be rolled up at the suction device 4 with means not present, in order to make greater access possible at the end side.
It is also possible to fold or lift the web 10-12 when access to the drying cylinders 2,6 or generally to the interior of the drying apparatus 1 is required.
The surface material 5 can have different designs.
In the case of a construction which requires minimal effort, the surface material 5 has only a film of an aluminum coating. The film is excellent in reflecting the heat generated in the interior of the drying device 1 by the drying cylinder inwards. It can be constructed relatively thin, for example with a thickness of 20-100 μm. Continuous use temperatures of more than 100 ℃ are possible when the film is provided as a base material, for example with polyester. The film is furthermore resistant to moisture. This satisfies all functionally required boundary conditions for the surface material. However, such a membrane is so light and has so low self-rigidity that it can be tensioned advantageously. It is sufficient for the tensioning that some weight is suspended at the end of the film that is below in the direction of gravity or the film is connected, for example via a spring or a rubber rope, with a base on which the drying device 1 stands.
A further embodiment of the surface material 5 is represented schematically in fig. 2. The surface material 5 is in this case constructed in two layers. It has an inner side 13 which, in use according to regulations, faces the drying cylinder 2, 6. A metallized membrane 14 is arranged on the inner side 13. On the side of the metallized film 14 facing away from the inner side 13, a carrier layer 15 is arranged, which can be constructed, for example, as a textile material. Textile materials are in particular textile fabrics or textile knitwear. Needle felts can also be provided here.
Fig. 3 shows a further possible embodiment of the surface material 5. Here, a metallized film 14 is again provided on the inner side, which is connected to a carrier layer 15 on the side opposite the inner side 13. On the side facing away from the metallized film 14, the carrier layer 15 is provided with a further layer 16, which can be provided, for example, for an improvement in the appearance (Optik). For example, an embossed textile web can be provided.
As the carrier layer 15, textile material, in particular in the form of a fabric, a knit or a needle-punched nonwoven, can again be provided.
The metallized film 14 on the inside then forms, on the one hand, a reflective layer in order to reflect the thermal radiation back into the interior of the drying device 1, and, on the other hand, likewise forms a moisture barrier, so that the carrier layer 15 can be kept dry.
Fig. 4 shows a further embodiment of the surface material 5. This embodiment essentially corresponds to the embodiment according to fig. 3, i.e. a metallized film 14 is provided on the inner side 13, which is connected to a carrier layer 15 made of a textile material. The carrier layer 15, which can be designed in particular as a needle felt, a fabric or a knitted fabric, is provided on the outside with a further layer 16.
In addition, the surface material 5 according to fig. 4 has magnets 17, for example in the form of strips of magnetic foil. At the other end, a further magnet 18 or an iron-containing element, for example a ferritized film strip, can be provided. Adjacent webs of flexible web material 5 can be arranged in such a way that the magnetic film strips 17 of the webs overlap the magnetic or ferritized film strips 18 of the adjacent webs. This therefore results in: the web is releasably connected to one another in the region of the magnetic foil strip 17 and the magnetic or ferritized foil strip 18. The connection is sufficiently stable to ensure that it remains together during operation of the drying apparatus 1. The connection can however easily be released by a worker who needs to enter the interior of the drying apparatus 1.
Instead of a "magnet assembly" with a magnetic membrane strip 17 and a magnetic or ferritized membrane strip 18, a clip connection with a spring clip, for example in the form of a button, can also be provided.
Claims (15)
1. A web drying device (1) having at least one heated drying cylinder (2) and a heat protection hood (3), characterized in that the heat protection hood (3) is designed as a bell which is open downwards in the direction of gravity.
2. The web drying apparatus according to claim 1, characterized in that the heat protection shield (3) has a flexible face material (5) with an inner side (13) facing the drying cylinder (2).
3. The fabric web drying apparatus according to claim 2, characterized in that the flexible face material (5) is suspended downwards from the carrier in the direction of gravity.
4. The web drying apparatus according to claim 2 or 3, characterized in that the flexible web material (5) is connected to a tensioning device.
5. The web drying device according to any of claims 2 to 4, characterized in that the inner side (13) is provided with a heat-reflecting layer.
6. The web drying arrangement according to any of claims 2 to 5, characterized in that the inner side (13) forms a moisture barrier.
7. The web drying apparatus according to any of claims 2 to 6, characterized in that the flexible web material (5) is loadable up to a continuous working temperature of at least 70 ℃.
8. The web drying device according to any of claims 2 to 7, characterized in that the flexible surface material (5) is constructed in multiple layers.
9. The web drying device according to any of claims 2 to 8, characterized in that the flexible surface material (5) has a film (14) and/or a textile material (15).
10. The web drying device according to claim 8 or 9, characterized in that the flexible surface material (5) has a carrier layer and at least one functional layer, in particular an aluminum vapor-sprayed film at the inner side.
11. The web drying apparatus according to any of claims 2 to 10, characterized in that the flexible web material (5) has a plurality of webs (11,12) which partially overlap one another.
12. The fabric web drying apparatus according to claim 10, wherein at least two adjacent webs (11,12) have releasable connecting assemblies.
13. Fabric web drying apparatus according to claim 12, characterized in that the releasable connecting assembly has a magnet (17) and/or a spring clip.
14. The web drying apparatus according to any of claims 2 to 13, characterized in that means are provided for rolling, lifting or folding the flexible web material (5).
15. The web drying apparatus according to any of claims 2 to 14, characterized in that the bell is provided with a suction device (4) above in the direction of gravity, from which suction device the flexible web material (5) hangs down.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP20214410.1 | 2020-12-16 | ||
| EP20214410.1A EP4015954B1 (en) | 2020-12-16 | 2020-12-16 | Textile sheet drying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114636297A true CN114636297A (en) | 2022-06-17 |
Family
ID=74175565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110352930.3A Pending CN114636297A (en) | 2020-12-16 | 2021-03-31 | Fabric web drying device |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4015954B1 (en) |
| JP (1) | JP7323595B2 (en) |
| CN (1) | CN114636297A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB773908A (en) * | 1954-01-12 | 1957-05-01 | Borje Valentin Leckner | Paper-drying apparatus |
| US3605282A (en) * | 1968-06-10 | 1971-09-20 | Benninger Ag Maschf | Apparatus for drying fabric |
| DE2934033A1 (en) * | 1978-12-13 | 1980-07-03 | Tsnii Promy Lubjanych Volokon | DRYING SYSTEM |
| 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 |
| CN104976879A (en) * | 2015-06-24 | 2015-10-14 | 亿和精密工业（苏州）有限公司 | Infrared drying machine |
| DE202018102456U1 (en) * | 2017-05-05 | 2018-05-14 | Valmet Technologies Oy | Hoist element for the hood of the cylinder dryer section of a fiber web machine and hood of the cylinder dryer section of a fiber web machine |
| CN111380342A (en) * | 2020-03-18 | 2020-07-07 | 盛亚明 | Drying treatment method for concrete additive |
Family Cites Families (9)
| 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 |
| 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 |
| ATE241306T1 (en) * | 1994-03-23 | 2003-06-15 | Rockland Ind Inc | MAGNETIC SEALING STRIPS FOR CURTAINS AND LINERS |
| 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 |
-
2020
- 2020-12-16 EP EP20214410.1A patent/EP4015954B1/en active Active
-
2021
- 2021-03-31 CN CN202110352930.3A patent/CN114636297A/en active Pending
- 2021-12-10 JP JP2021201142A patent/JP7323595B2/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB773908A (en) * | 1954-01-12 | 1957-05-01 | Borje Valentin Leckner | Paper-drying apparatus |
| US3605282A (en) * | 1968-06-10 | 1971-09-20 | Benninger Ag Maschf | Apparatus for drying fabric |
| DE2934033A1 (en) * | 1978-12-13 | 1980-07-03 | Tsnii Promy Lubjanych Volokon | DRYING SYSTEM |
| 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 |
| CN104976879A (en) * | 2015-06-24 | 2015-10-14 | 亿和精密工业（苏州）有限公司 | Infrared drying machine |
| DE202018102456U1 (en) * | 2017-05-05 | 2018-05-14 | Valmet Technologies Oy | Hoist element for the hood of the cylinder dryer section of a fiber web machine and hood of the cylinder dryer section of a fiber web machine |
| CN111380342A (en) * | 2020-03-18 | 2020-07-07 | 盛亚明 | Drying treatment method for concrete additive |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4015954B1 (en) | 2024-02-28 |
| TW202315996A (en) | 2023-04-16 |
| EP4015954A1 (en) | 2022-06-22 |
| JP2022095562A (en) | 2022-06-28 |
| JP7323595B2 (en) | 2023-08-08 |
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