EP0433228B1 - Procédé et appareil de lavage en continu d'une bande textile - Google Patents

Procédé et appareil de lavage en continu d'une bande textile Download PDF

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Publication number
EP0433228B1
EP0433228B1 EP90810939A EP90810939A EP0433228B1 EP 0433228 B1 EP0433228 B1 EP 0433228B1 EP 90810939 A EP90810939 A EP 90810939A EP 90810939 A EP90810939 A EP 90810939A EP 0433228 B1 EP0433228 B1 EP 0433228B1
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EP
European Patent Office
Prior art keywords
compartment
nozzles
immersion
web
arrangement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90810939A
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German (de)
English (en)
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EP0433228A1 (fr
Inventor
Hans Weber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Benninger AG Maschinenfabrik
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Benninger AG Maschinenfabrik
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication of EP0433228A1 publication Critical patent/EP0433228A1/fr
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B3/00—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating
    • D06B3/10—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics
    • D06B3/20—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics with means to improve the circulation of the treating material on the surface of the fabric
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B1/00—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating
    • D06B1/02—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating by spraying or projecting

Definitions

  • the invention relates to a method for continuously washing a textile web according to the preamble of claim 1, and to an apparatus for carrying out the method according to the preamble of claim 6.
  • Such methods and devices for the continuous wet treatment of textile webs have been known and used for a long time. They are used to wash out superfluous chemicals, e.g. Sizing, lye, etc. from previous treatments, for post-treatment, for general cleaning or in certain cases also to achieve an effect on the textile web. As a rule, the highest possible washing efficiency is sought, i.e. An intensive washing effect per kilogram of goods passing through with the least possible outlay on equipment and with a low fresh water supply.
  • FR-A-2014106 discloses a device for cleaning a textile web, in which the stretched web is guided past rotating cleaning elements in a closed treatment chamber, which act on the surface of the web.
  • the web is guided over upper and lower deflecting rollers at least in one treatment area and sprayed with a washing liquid from spray channels which are arranged in the area of the upper deflecting rollers.
  • the lower deflection rollers are arranged in a common trough under the fleet level.
  • the material web Before entering the treatment chamber, the material web is also passed over upper and lower deflecting rollers and is immersed in a vessel and wetted with a dampening liquid. This pre-moistening is intended to the web Make it receptive for the absorption of the actual washing liquid in the treatment chamber.
  • the mechanical loading of the web used in this device is not possible with sensitive fabrics. This is all the less because rotating treatment elements are required in large numbers, which could damage the surface.
  • this object is achieved with a method with the features of claim 1 and in terms of the device with a device with the features of claim 6.
  • a diving compartment known per se with a nozzle compartment in which the textile web of nozzles is pressurized with a treatment medium, leads to a very considerable reduction in the overall length of the entire system.
  • the nozzle compartment itself only requires one relative takes up little space and has only a few, for example only three, deflection rollers. Nevertheless, a very high proportion of the impurities are removed in the nozzle compartment, so that only a few washing steps or a few immersion chambers are required in the subsequent immersion compartment in order to achieve the desired degree of purity. This significantly reduces the total number of rollers, which among other things also allows higher fabric speeds.
  • the tension in the fabric can also be reduced, which in turn significantly reduces or even eliminates the distortion in width and length.
  • the still clean tissue sections do not necessarily have to be immersed in heavily contaminated washing liquor. Rather, the wastewater can be discharged directly from the nozzle compartment, in which the impurities are present in highly concentrated form, without mixing the remaining wash liquor, which considerably facilitates the treatment. In certain cases, individual chemicals can be recovered from the wastewater, but this is only possible in a rational manner if they are obtained in a certain purity and concentration.
  • the nozzle arrangement is at least partially fed with treatment medium from the diving compartment.
  • This treatment medium is in fact only relatively slightly loaded with impurities and is therefore completely sufficient for removing the coarsest impurities in the nozzle arrangement.
  • a particularly good effect is achieved in the nozzle compartment if the treatment medium is applied to an ascending and a descending run of the web. At least a portion of the wash liquor passed through the immersion compartment in countercurrent can be fed to the nozzle arrangement as a treatment medium. This is possible because the washing liquor from the diving compartment is only relatively small Contamination is loaded. The countercurrent principle can thus be continued from the individual washing chambers to the nozzle arrangement, with various combinations being possible.
  • a particularly efficient cleaning is achieved in the nozzle compartment if at least one liquid and at least one gaseous or vaporous medium is applied to the web from the nozzle arrangement.
  • at least part of the vapors obtained in the diving compartment can be fed to the nozzle arrangement as a vaporous treatment medium. This results in a particularly optimal heat balance in the entire system and reduces the installations for collecting and cleaning the vapors. Additionally or alternatively, hot air could also be used as the treatment medium.
  • the invention is not limited to the combination of a single nozzle compartment with a single diving compartment. In certain applications, several nozzle or immersion compartments could also be combined. Post-treatment systems such as Dryers etc. could still be integrated.
  • FIG. 1 shows a washing installation 1 according to the invention, consisting of a nozzle compartment 17 and a diving compartment 13.
  • the nozzle compartment has two lower rollers 16 and one upper roller 14, so that an ascending strand 19 and a descending strand 20 are formed.
  • the two runs run approximately parallel or at an acute angle to one another, so that the overall length of the nozzle compartment 17 is relatively small.
  • the ascending strand is guided in the ascending shaft 22 and the descending strand in the descending shaft 24.
  • the nozzle arrangements 21a, 21b, or 23a and 23b, which are effective on both sides of the web, are arranged on the two shafts. Their construction is explained below with reference to Figures 3 to 5.
  • the fabric web 2 is guided from the second lower roller 16 to a transfer roller 18 between the nozzle compartment and the immersion compartment. From there, the material web reaches the diving compartment 13 of a construction known per se. It has lower trough rollers 4 which are arranged in the individual chambers 12. The upper rollers 5 are arranged in the upper area, so that the fabric web 2 can be guided in a meandering manner in the so-called double feed. But simple guidance would of course also be conceivable. From the first chamber 6 to the last chamber 7, the individual chambers are arranged in steps with a gradient, so that the washing liquor flows in the direction of arrow 10 in countercurrent against the first chamber 6. The fresh water is applied to the removed fabric web via a spray pipe 8 and then already collects in the last chamber 7 with a small proportion of impurities.
  • the washing liquor flows from the first chamber 6 into the overflow 25, where part is discharged via the outlet 26. Another part reaches the nozzle arrangement 23a, 23b on the descending shaft 24 via a feed pump 27 and is sprayed there as a liquid treatment medium onto the continuous web.
  • the sprayed-on liquor now flows, loaded with a higher proportion of impurities, via the descending shaft 24 into the chamber 28b at the nozzle compartment. From there, a portion is in turn fed via the feed pump 29 into the nozzle arrangement 21a, 21b.
  • the delivery rate of the pump 27 is set such that only a small proportion of the washing liquor flows from the chamber 28b via the partition 30 into the chamber 28a.
  • the chamber 28a is not designed as an immersion bath, but merely serves to collect the washing liquor flowing through the ascending shaft 22 out of the nozzle arrangement 21a, 21b.
  • the highly concentrated washing liquor flows off via the outlet 35 and is reused.
  • the fabric web 2 is thus not impregnated with wash liquor in the chamber 28a, which, as mentioned at the beginning, can have advantages with regard to the cleaning effect.
  • the chamber 28a could also be designed as an immersion bath.
  • heaters 32 are arranged in the chambers 12 of the diving compartment 13, so that the washing liquor can be kept at the boiling temperature.
  • the heating power can be set so that it becomes lower towards the end of the machine.
  • the rising vapor is drawn in via a fan 33 and via a steam line of the nozzle arrangement 23a, 23b supplied as a further treatment medium.
  • a steam heater 42 can be installed in the line to keep the temperature constant or to increase it.
  • FIG. 2 shows an alternative exemplary embodiment of a washing system 1.
  • the structure is essentially the same as in the exemplary embodiment according to FIG. 1 and there is only a difference when using the treatment media.
  • the washing liquor is also conducted in counterflow from the last chamber 7 to the first chamber 6 in the direction of the arrow 10.
  • part of the washing liquor is discharged directly via the outlet 26 at the overflow 25.
  • a remaining amount reaches the two nozzle arrangements 21a, 21b and 23a, 23b via the pump 27, but in equal parts.
  • the chamber 28b is also not designed as an immersion bath here, so that the loaded liquor flows out of both chambers 28a and 28b directly via the outlets 35.
  • a first immersion in the liquor and thus an impregnation of the fabric web thus takes place only in the first chamber 6 after most of the impurities in the nozzle compartment 17 have already been removed and washed away.
  • the vapors from the diving compartment 13 are likewise fed uniformly to all the nozzle arrangements via the blower 33 without repeated suctioning off at the descending shaft 24.
  • the exemplary embodiments according to FIGS. 1 and 2 could also be combined, for example by the washing liquor is guided according to FIG. 1 and the vapor is guided according to FIG. 2.
  • FIG. 3 again shows the overall arrangement with top roller 14 and with the two bottom rollers 16a and 16b.
  • the latter are stored in a trough 3, which can be designed with or without subdivision 30, depending on the intended use.
  • the trough has an inlet 9, via which the washing liquor is fed from the diving compartment into the chamber 28b.
  • the drain 35 is arranged at the bottom of the chamber 28a, but could also be attached to the side.
  • the chamber 28b is also provided with a drain connector 38. This drain socket could be closed by a valve if necessary.
  • the trough is also largely sealed by covers 31 or by the cover 37 against the escape of steam, the fabric web 2 entering the trough 3 via an inlet opening 43 and being withdrawn from the trough via an outlet opening 44.
  • the tissue outlet opening 44 could also be connected directly to the diving compartment in the form of a shaft.
  • the two shafts 22 and 24 are arranged, so that the ascending and descending run of the fabric web guided over the upper roller 14 each run in a separate shaft.
  • Side covers 11 are provided on the shafts, which facilitate the pulling in of the fabric web and which allow the material web to be observed.
  • the upper roller 14 is mounted in an upper housing part 45, which is also sealed with a cover 46, so that the fabric web is easily accessible from all sides.
  • each nozzle arrangement consist of three collector tubes 59, 60 and 61 which are rectangular in cross section.
  • the tubes could possibly also be of exactly square design.
  • the tubes are welded to one another in a gas-tight manner, a fastening strip 57 being welded to the uppermost tube 59 and the lowest tube 61.
  • the individual collectors are thus formed directly as a gas-tight wall section of the treatment zone 47.
  • the collectors also each form a connecting wall between the shafts 22 and 24 on the one hand and the upper housing part 45 on the other.
  • Intermediate pieces 54 are installed in order to enable the roller rollers to be displaced laterally in the simplest way.
  • a side wall 62 is provided, which is pressed sealingly against the collectors.
  • This side wall could possibly also seal the individual collector tubes directly to the side.
  • the collectors are laterally sealed with a bellows or with another flexible wall, for example made of rubber or the like.
  • Each collector pipe 59 to 61 is provided with a separate connection piece 58, each connection piece being arranged approximately in the middle of the collector pipe. This ensures a uniform distribution across the entire width. Under certain circumstances, however, several connecting pieces could also be distributed over the entire length of a collector tube.
  • support bolts 48 can be welded into the pipes at certain intervals.
  • the collector pipes 59 carry steam or vapors
  • the collector pipes 60 hot air and the collector pipes 61 carry water or wash liquor.
  • the nozzles directed against the fabric web 2 can be designed in very different ways.
  • the tubes 59 and 60 are provided with a multiplicity of outlet openings 49 and 51, through which the treatment medium fed in can strike the fabric web at an angle 52 at an angle.
  • larger outlet openings 53 are arranged in the collector tube 61 and are directed at a right angle against the fabric web.
  • these could possibly also be inclined relative to the fabric web.
  • a slot nozzle could extend over the entire length of a collector tube.
  • the nozzles of the collector tubes are arranged on a plane running parallel to the fabric web. It would of course also be conceivable that each individual collector tube of a nozzle arrangement can be adjusted separately, so that the nozzles are arranged at different distances from the fabric web can. However, it would also be conceivable for the individual collector tubes to be connected to one another in such a way that the nozzles of the individual tubes are at different fixed distances from the fabric web. Finally, it would even be conceivable that the nozzle cross section can be changed from the outside with a slide or the like, or that individual nozzle openings can be completely covered in the same way.
  • the diameters of the outlet openings 49 and 51 are in the range of approximately 1 mm and the diameter of the outlet openings 53 in the range of approximately 4 mm.
  • the distance between the shaft walls of the shafts 22 and 24 is generally approximately the same as the distance 50 between the nozzle arrangements 21a and 22b, or 23a and 23b, i.e. approximately 14 mm, with different distances already mentioned above between the individual collector tubes possible are.
  • the distance could also be larger and up to 40 mm. So that the fabric web 2 is not damaged by the very close collector tubes, these are provided with relatively large rounded radii at the corners. These also allow a recessed welding, whereby no protruding weld seams are formed.
  • FIGS. 6 and 7 finally show the comparison of the washing action of a conventional and an inventive washing system in the diagram.
  • FIG. 6 shows a total of 7 conventional washing compartments 15a to 15g connected in series over the abscissa 39.
  • the ordinate 36 shows in curve 40 the washing efficiency, expressed in the loading of the washing liquor in the relevant chamber 12 with impurities.
  • Curve 41 also shows the temperature profile in the wash liquor in ° C.
  • the loading curve 40 shows that only after passing through at least three washing compartments 15a, 15b and 15c a substantial proportion of the impurities have been removed. Then the curve is flatter, but four wash compartments are still required to achieve an acceptable load in the last compartment.
  • the conventional washing compartments also have six individual compartments, such as the diving compartment 13 in the device according to the invention, which is expressed on the abscissa 39 by the division into six fields per washing compartment.
  • Figure 7 shows the abscissa 39, the nozzle compartment 17 with the two chambers 28a and 28b and the diving compartment 13 with the six individual chambers 12.
  • the loading curve 40 here is quite different from that in Figure 6. More than 80% of the contaminants are already after Passing through the nozzle compartment 17 is reduced and the desired degree of purity is reached at the end of the diving compartment 13.
  • the temperature curve 41 is also steep, which obviously reduces the overall energy requirement.
  • the fabric web in the device according to the invention only comes into contact with the heavily loaded washing liquor for a very short time and, moreover, not by complete immersion, but sometimes only by vertical pouring.
  • the fabric web stays in a heavily loaded fleet for a much longer time, which can lead to permanent discoloration in the case of printed white fabrics.
  • the long dwell time for washing out the size leads to similar difficulties, since the size to be dismantled gels in the hot liquor and remains adhering to the fabric surface with a longer dwell time. This makes washing out and recovering the size considerably more difficult.
  • the size is removed immediately without changing the state and can be removed and reprocessed via the chambers 28a and 28b become.
  • Chemicals could also be sprayed onto the fabric web via the nozzle arrangements, which, for example, facilitate the breakdown of size or other substances.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)

Claims (12)

  1. Procédé pour le lavage en continu d'une bande textile (2), selon lequel la bande est guidée dans un compartiment d'immersion (13) par l'intermédiaire de cylindres de guidage supérieurs et inférieurs (5, 4) et est plongée de préférence dans plusieurs chambres (12) contenant un bain de détergent, caractérisé en ce qu'on fait passer la bande (2), avant son entrée dans le compartiment d'immersion (13), par un compartiment à buses (17) qui comporte une gaine montante (22) et une gaine descendante (24) et dans lequel la surface de ladite bande est sollicitée sous pression à l'aide d'au moins un agent de traitement à partir d'un dispositif de buses (21a, 21b, 23a, 23b), à l'extrémité supérieure des gaines (22, 24), étant précisé que le dispositif de buses est au moins partiellement alimenté en agent de traitement à partir du compartiment d'immersion, et que la sollicitation à l'aide de l'agent de traitement a lieu au niveau d'un brin montant (19) et d'un brin descendant (20) de la bande.
  2. Procédé selon la revendication 1, caractérisé en ce qu'une partie au moins du bain de détergent guidé à contre-courant à travers le compartiment d'immersion (13) est amenée dans le dispositif de buses sous la forme d'un agent de traitement.
  3. Procédé selon la revendication 2, caractérisé en ce que le brin descendant (20) de la bande est plongé, avant d'entrer dans le compartiment d'immersion, dans une chambre (28b) prévue dans le compartiment à buses et contenant un bain de détergent qui est amené à contre-courant à partir du compartiment d'immersion, et en ce que le dispositif de buses (23a, 23b) prévu au niveau du brin descendant est alimenté en bain de détergent à partir d'une première chambre (6) du compartiment d'immersion, tandis que le dispositif de buses (21a, 21b) prévu au niveau du brin montant (19) est alimenté en bain de détergent à partir de la chambre (28b) prévue dans le compartiment à buses.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que la bande (2) est sollicitée à partir du dispositif de buses à l'aide d'au moins un agent liquide et d'au moins un agent gazeux ou à l'état de vapeur.
  5. Procédé selon la revendication 4, caractérisé en ce qu'une partie au moins des vapeurs produites dans le compartiment d'immersion (13) est amenée dans le dispositif de buses sous la forme d'un agent de traitement.
  6. Dispositif pour le lavage en continu d'une bande (2), comprenant un compartiment d'immersion (13) dans lequel sont disposés des cylindres de guidage supérieurs et inférieurs (5, 4) pour la bande, les cylindres de guidage inférieurs étant disposés dans des chambres (12) destinées à recevoir un bain de détergent, caractérisé en ce qu'un compartiment à buses (17) contenant une gaine montante (22) et une gaine descendante (24) est disposé avant le compartiment d'immersion (13), et en ce qu'il est prévu, à l'extrémité supérieure des gaines, un dispositif de buses (21a, 21b, 23a, 23b) à partir duquel la bande est apte à être sollicitée sous pression à l'aide d'au moins un agent de traitement apte à être amené au moins partiellement à partir du compartiment d'immersion.
  7. Dispositif selon la revendication 6, caractérisé en ce qu'il comporte une pompe de circulation (27) à l'aide de laquelle une partie au moins du bain de détergent traversant le compartiment d'immersion (13) à contre-courant est apte à être amenée dans le dispositif de buses sous la forme d'un agent de traitement.
  8. Dispositif selon la revendication 7, caractérisé en ce que la gaine descendante (24) mène dans une chambre (28b), prévue au niveau du compartiment à buses (17), qui est apte à être alimentée en bain de détergent à partir du compartiment d'immersion (13), en ce que le dispositif de buses (21a, 21b) prévu au niveau de la gaine montante (22) est relié par l'intermédiaire d'une conduite à la chambre (28b) prévue au niveau du compartiment à buses, et en ce que le dispositif de buses (23a, 23b) prévu au niveau de la gaine descendante (24) est relié par l'intermédiaire d'une conduite à la première chambre (6) du compartiment d'immersion ou à la conduite d'écoulement (26) de celui-ci, une pompe (27, 29) étant disposée dans les deux conduites.
  9. Dispositif selon l'une des revendications 6 à 8, caractérisé en ce que le dispositif de buses est formé par au moins deux tubes collecteurs (59, 60, 61), disposés les uns derrière les autres dans le sens d'avance, qui s'étendent sur toute la largeur de la bande de matériau, chaque tube collecteur comportant une conduite d'amenée séparée (58).
  10. Dispositif selon la revendication 9, caractérisé en ce que l'un au moins des tubes collecteurs (59) est relié par l'intermédiaire d'une conduite de vapeur à l'atmosphère de vapeur de la chambre d'immersion (13), et en ce qu'il est prévu, dans la conduite de vapeur, un ventilateur pour acheminer les vapeurs dans le tube collecteur.
  11. Dispositif selon la revendication 9, caractérisé en ce que l'un au moins des tubes collecteurs prévus au niveau de la gaine montante (22) est relié par l'intermédiaire d'une conduite de vapeur à la gaine descendante (24), et en ce qu'il est prévu, dans la conduite de vapeur, un ventilateur (34) pour acheminer les vapeurs dans le tube collecteur.
  12. Dispositif selon la revendication 10 ou 11, caractérisé en ce qu'un appareil de chauffage de vapeur (42) est disposé dans la conduite de vapeur.
EP90810939A 1989-12-15 1990-12-03 Procédé et appareil de lavage en continu d'une bande textile Expired - Lifetime EP0433228B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4526/89 1989-12-15
CH452689 1989-12-15

Publications (2)

Publication Number Publication Date
EP0433228A1 EP0433228A1 (fr) 1991-06-19
EP0433228B1 true EP0433228B1 (fr) 1995-05-24

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EP90810939A Expired - Lifetime EP0433228B1 (fr) 1989-12-15 1990-12-03 Procédé et appareil de lavage en continu d'une bande textile

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EP (1) EP0433228B1 (fr)
DE (1) DE59009133D1 (fr)
ES (1) ES2071806T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE232248T1 (de) 1999-04-12 2003-02-15 Benninger Ag Maschf Verfahren und vorrichtung zum kontinuierlichen waschen einer textilen bahn
DE102007031657A1 (de) 2007-07-06 2009-01-08 Küsters Textile GmbH Verfahren und Vorrichtung zum kontinuierlichen Waschen einer textilen Warenbahn
ITTO20130263A1 (it) * 2013-03-29 2014-09-30 Bianco Spa Macchina e metodo per purgare in continuo un nastro di tessuto

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2729537A (en) * 1951-04-03 1956-01-03 Springs Cotton Mills Inc Open width wet processing apparatus and process
FR1206759A (fr) * 1957-05-09 1960-02-11 S T S Installation pour le lavage des tissus imprimés
DE1460272A1 (de) * 1964-03-13 1968-12-19 H Kranz Fa Verfahren und Anlage zum Bleichen von Textilstoffen mit gasfoermigem Chlordioxyd
FR2014106A1 (en) * 1969-09-30 1970-04-17 Arnaud Auguste Fabric scourer machine
JPS528184A (en) * 1975-07-09 1977-01-21 Nippon Dyeing Machine Mfg Co Apparatus for continuously treating broad textile goods
US4479370A (en) * 1981-12-10 1984-10-30 Burlington Industries, Inc. Full counterflow mini-bath open-width fabric washer

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Publication number Publication date
ES2071806T3 (es) 1995-07-01
EP0433228A1 (fr) 1991-06-19
DE59009133D1 (de) 1995-06-29

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