EP1526206B1 - Machine for the wet treatment of textile fabrics in roped form - Google Patents

Abstract

The assembly to give textile piecegoods a wet treatment process, e.g. dyeing, has a closed vessel (1) with a venturi jet (6) using a gas transport medium of air or an air/steam mixture to move the fabric (4) in a closed loop in a given direction (10). The jet has a ring jet gap, defined on one side by a jet cone with a channel passages. The dyestuff is delivered (21,39) for application to the moving fabric, in the direction of material movement, between the jet opening and a reel (5) which lifts the fabric out of the vessel dwell chamber.

Description

The invention relates to a wet treatment machine for rope-shaped textile material with a closed container and a Venturi transport nozzle system, which is acted upon by a transport medium flow to drive a circulating in the container endless strand of goods in a predetermined direction of rotation.

Such wet processing machines known in practice in several embodiments as JET dyeing machines and the like operate according to the hydraulic or aerodynamic principle, depending on whether the transport medium stream is liquid or gaseous. The conveyed through the transport nozzle system endless strand of goods is tabulated at the exit from the transport nozzle system by a Abtaflungseinrichtung and then stored in a memory, from which it is continuously removed and supplied to the goods Strangeinlauf the transport nozzle system. To lift out the strand from the memory and its introduction into the Warenstrangeinlauf the transport nozzle system this reel means are assigned, which generally have a reel for each transport nozzle of the transport nozzle system. The electric motor-driven reel is located in the goods flow path in front of the Warenstrangeinlauf their associated transport nozzle and directs the lifted substantially vertically out of the memory goods strand by at least 90 ° before it enters the Warenstrangeinlauf the transport nozzle. On the substantially vertical section of the fabric strand travel path between the reel and the storage, part of the treatment liquor entrained by the product strand drips off, which is assisted by the fact that the product strand rests on the reel surface with its weight and is therefore more or less compressed.

In order to apply the treatment liquor as uniformly as possible to the circulating goods strand, the treatment liquor is circulated through a liquor circulating pump and brought into action in cooperation with the transport medium flow on the strand of goods. At one of the EP 0078022 known wet treatment machine of this type treatment agent is added in atomized form a gas stream, which serves as a transport medium flow for the circulating strand of goods. In another according to the aerodynamic principle piece dyeing machine after the EP 0945538 the treatment agent is introduced into the nozzle housing of the transport nozzle, wherein the Behandlungsmittelteilchen are applied by the gaseous transport medium flow through the nozzle annulus evenly on the continuous strand of goods, in which they einalte the further passage through the intensive section of the transport nozzle become. At one of the GB-A-2380205 known wet processing machine, the means for applying a treatment liquor are provided on the fabric strand in a portion of the fabric strand path, which lies between the region of the reel and the nozzle ring gap of the transport nozzle system. For this purpose, the treated by the gaseous transport medium flow nozzle annulus in Warenstranglaufrichtung a treatment liquor jet nozzle is connected upstream, which is traversed by the strand of goods and having an annular gap through which the treatment liquor is applied to the continuous strand of goods.

In practice, it has been found that the amount of liquid treatment liquor that can be injected into a gaseous transport medium stream in a JET wet processing machine operating on the aerodynamic principle is limited. In fact, the liquid droplets of the treatment liquor introduced into the transport medium stream have to be accelerated in the direction of product flow, for which purpose a considerable energy of the transport medium flow is required, which must be applied via the blower which pumps them. In particular, when rinsing the fabric strand but it would be desirable to have a high fleet throughput through the transport nozzle to abbreviate the purge time and to achieve a good rinsing effect.

The object of the invention is therefore to show a way that makes it possible to improve the application of the treatment liquor to the product strand in a simple manner.

To achieve this object, the wet treatment machine according to the invention has the features of patent claim 1 on.

The new wet processing machine is equipped with means for applying treatment liquor to the fabric strand in a portion of the fabric strand travel path between the area of the reel means and the nozzle annulus of the transport nozzle system having means for injecting a treatment liquor into the passageway of the nozzle cone surrounding the passageway therearound Channel wall open. About these injectables the treatment liquor, i. the treatment agent, applied separately from the transport medium flow to the transport line passing through the product strand. The loading of the goods strand with the treatment liquor is independent of the speed of the inflowing into the annular gap transport medium flow, which causes the promotion of the goods. Since the injection means are arranged in the region of the nozzle cone, the fabric strand is already pretreated with the exiting from the injection agent treatment liquor when it enters the annular gap and is there acted upon by the transport medium. As the injecting means are distributed around the passageway wall, the passage of material passing through the passageway of the nozzle cone passes through a "treatment liquor curtain" concentric with the nozzle orifice. This results in a very gentle admission of the goods with the treatment liquor.

In a preferred embodiment, the injection means open with respect to the longitudinal center axis of the passage so that the emerging from them in the passageway treatment liquor has a component of movement in the direction of travel. For this purpose, the injection means are advantageously arranged at an angle to the longitudinal central axis opening, the apex points in the direction of travel of the fabric. By means of these measures it is achieved that the mentioned "treatment fleet curtain" has a component pointing in the direction of travel of the goods, which component can be made so large that it approximately has the speed of the continuous strand of goods. As a result, the treatment liquor introduced into the passageway via the injection means, as mentioned, does not first have to be accelerated by the entraining continuous strand of goods, which would lead to a braking effect on the product strand.

In a preferred embodiment, the injection means have injection channels, which open around the channel wall in the through-channel, with their mouths are preferably evenly distributed over the circumference of the passageway. Alternatively or additionally, however, the injection means may also have at least one circumferential annular gap penetrating the wall of the through-channel, which surrounds the continuous strand of goods and applies the treatment liquor uniformly to the product strand. In any case, however, as already mentioned, a very gentle admission of the strand of goods with the treatment liquor. The required Einwalken or "massaging" the treatment liquor into the product is carried by the Transportmediumsstrom during the passage of the fabric strand through the subsequent intensive section of the transport nozzle, which extends from the annular gap in the direction of web travel. By injecting the treatment liquor in the nozzle cone, the treatment liquor does not need to be diverted. It passes directly and 100 percent on the passing flow of goods, because there is no throwing away or separation of liquid particles, as can not be avoided when the treatment liquor is added to the transport medium flow.

In addition, the treatment liquor application means in the areas of the reel means have sprays that have a spray nozzle. This spray nozzle has an orifice axis in the region of its nozzle orifice, which encloses an angle of less than 90 ° with the product strand running direction.

Constructively simple conditions arise when the reel means have at least one rotatable about an axis reel and treatment liquor application means, for example, open in a region above the reel so that the exiting treatment liquor flows downwards and impinges on the passing strand of goods. Alternatively, treatment liquor application means may also open in a region lying between the axis of rotation of the reel and a nozzle cone of the transport nozzle system, if this is possible with regard to the structural conditions.

It is possible to surround the transport nozzle in the usual way with its own nozzle housing in the region of the annular gap, which is connected via a corresponding line with a transport medium source. In particular, in so-called multi-storage machines, in which a plurality of transport nozzles lying adjacent to a single container assigned, the arrangement can be made such that the transport nozzles of the nozzle system are all arranged with their annular gap in a common transfer medium distribution chamber lying, which acts on the gaseous transport medium is. This distribution space may conveniently be formed in an elongated transport medium distribution box, which is connected to the Tränsportmediumsquelle and in which the transport nozzles are used directly.

Fig. 1

eine Nassbehandlungsmaschine gemäß der Erfindung in Form einer Stückfärbemaschine, im Querschnitt in einer schematischen Seitenansicht,

Fig. 2

den Behandlungsbehälter der Stückfärbemaschine nach Fig. 1, in einer Seitenansicht unter Weglassung aller Zusatzeinrichtungen,

Fig. 3

eine Venturi-Transportdüse der Stückfärbemaschine nach Fig. 1, im Ausschnitt in einem vergrößertem Maßstab und in einer Seitenansicht, teilweise im Schnitt,

Fig. 4

den Behandlungsbehälter einer Stückfärbemaschine gemäß der Erfindung, in einer abgewandelten Ausführungsform, im Längsschnitt, in einer Seitenansicht und in schematischer Darstellung,

Fig. 5

die Anordnung nach Fig. 4, geschnitten längs der Line I-I der Fig. 4, in einer Seitenansicht und

Fig. 6

einen Ausschnitt der Fig. 5 zur Veranschaulichung des Wareneinlaufbereichs der in Fig. 5 veranschaulichten Transportdüse.

Further developments of the invention are the subject of dependent claims. In the drawing, an embodiment of the object of the invention is shown. Show it:

Fig. 1

a wet treatment machine according to the invention in the form of a piece dyeing machine, in cross section in a schematic side view,

Fig. 2

the treatment container of the piece dyeing machine Fig. 1 in a side view omitting all ancillary equipment,

Fig. 3

a venturi transport nozzle of the piece dyeing machine behind Fig. 1 , in section on an enlarged scale and in a side view, partly in section,

Fig. 4

the treatment container of a piece dyeing machine according to the invention, in a modified embodiment, in longitudinal section, in a side view and in a schematic representation,

Fig. 5

the arrangement after Fig. 4 , cut along the line II of Fig. 4 in a side view and

Fig. 6

a section of the Fig. 5 to illustrate the goods entry area of the Fig. 5 illustrated transport nozzle.

In the FIG. 1 schematically shown high temperature (HT) -Stückfärbemaschine has a pressure-resistant cylindrical container 1, in which a closable by a cover 2 operating opening 3, through which a strand of goods 4 can be introduced. The product strand 4 is introduced via a foreign-driven reel 5 in a Venturi transport nozzle 6, to which a Abtafler 7 connects. The Abtafler 7 sets the emerging from the transport nozzle 6 strand of goods 4 in a store 8 from which the endless strand of goods through the reel 5 is pulled out again. The product strand 4, as follows Fig. 1 to take a substantially vertical Warenstranglaufweg between the memory 8 and the reel 5. The reel 5 and the transport nozzle 6 are housed in housing parts 9, which are liquid-tightly connected to the container 1. The product strand 4 was connected after insertion through the operating opening 3 at its ends to an endless loop of goods.

The transport nozzle 6 is acted upon by a gaseous transport medium flow, which circulates the continuous strand of goods 4 in a direction of rotation indicated by an arrow 10. The transport medium in the present case is air or an air-vapor mixture, which is sucked out of the container 1 by a blower 11 and a suction line 12 and conveyed via a pressure line 13 into the transport nozzle 6.

At the bottom of the container 1, a float sump 14 is arranged, which contains a float screen 15 and which is connected to a suction line 16 of a liquor circulating pump 17 whose pressure line 18 contains a heat exchanger 19 and opens into the transport nozzle 6 via a control valve 20 and a line 21. The liquor circulation pump 17 makes it possible to circulate from the container 1 sucked treatment liquor via the transport nozzle 6 and the container 1. The circulation path is in Fig. 1 indicated darkly. Parallel to the heat exchanger 19 and the liquor circulating pump 17 is a bypass line 22 which contains a shut-off valve 23 and connects the sump 14 with the pressure line 21.

Finally, there is also provided a starting agent container 24 which contains in aqueous solution, emulsion or dispersion a chemical treatment agent which can be fed via a treatment agent pump 25 and a connecting line 26 into the suction line 16 of the liquor circulating pump 17. How out FIG. 2 to be taken is the described Piece dyeing machine designed as a multi-storage machine, which contains in the present case four in the axial direction of the cylindrical container 1 adjacent memory 8. Each of the memory 8 is associated with a transport nozzle 6. The four transport nozzles 6 form a transport nozzle system. In this nozzle system, each transport nozzle 6 is a driven reel 5 in the off FIG. 1 associated clear manner, the drive is not shown in detail. The reels 5 with their drives and housing parts 9 form reel means.

The extent described, working on the aerodynamic principle piece dyeing machine is known per se.

At this piece dyeing machine additional means are provided to apply treatment liquor to the fabric strand 4 in the areas of the reel means. For this purpose, each transport nozzle 6 upstream in the direction of product flow, a reel 5 rotatable around an axis of rotation 28 in the housing 9 is a treatment flotation nozzle 29 (FIG. Fig. 3 ), which is arranged in a connecting piece 30 of the housing 9. The optionally designed as a spray or injection nozzle treatment flotation nozzle 29 is connected via a line 31 (FIG. FIG. 1 ) and a control valve 32 are connected to the treatment liquor pressure line 21. How out FIG. 2 can be seen in the present case, the leading to the four treatment flotation nozzles 29 lines 31 are connected in parallel to a manifold 33 which is connected to the pressure line 21.

FIG. 3 shows that the Behandlungsflottendüse 29 is bent in the region of its mouth from the vertical direction in a direction of the goods strand passage direction 10 approximately, such that the nozzle orifice axis 34 with the goods strand transport direction 10 at an acute angle includes, whose vertex is in front in the direction of travel. It is thereby achieved that the treatment liquor emerging from the nozzle 29 has a movement component in the running direction 10 of the goods strand 4.

As in FIG. 3 indicated, the transport nozzle 6 has a nozzle cone 35 with a coaxial through-channel 36 for the product strand 4, to which a diffuser 37 connects in goods strand running direction, which forms an annular gap 38 with the nozzle cone 35. The annular gap 38 is disposed in a surrounding tubular nozzle housing 39 into which the treatment liquor pressure line 21 and (in FIG. 3 not shown), the blower pressure line 13 open.

The mouth of the treatment liquor pressure line 21 in the nozzle housing 39 via an in FIG. 3 in its details, not shown further mouth, which may also be arranged directed in the direction of rotation 10 of the fabric strand 4 and from which the liquid droplets of the injected treatment liquor are introduced from the transport medium flow in the annular gap 38.

In addition to the injection or pressure line 21 opening into the nozzle housing 39, the arrangement is made such that, as in FIG FIG. 3 represented, in the nozzle cone 35 injection channels 40 are arranged, which open around the passageway 36 evenly distributed in this. The injection channels 40 are as shown FIG. 3 can be seen, with its central axis with respect to the fabric running direction 10 inclined, such that the emerging from them treatment liquor jets have a component of movement in the strand 10. As can be seen, the axes of the injection channels 40 (only one of which is shown) enclose an angle of less than 90 ° with the axis of the through-channel 36.

The injection channels 40 are based on an annular cone 410 placed on the nozzle cone 35, which is connected via a line 21a to the pressure line 21 of the liquor circulating pump 17.

In operation, the liquor circulating pump 17 on the in FIG. 1 dark circulatory shown circulating treatment liquor, if necessary, from the batch tank 24 special treatment agents, eg. Dyestuffs are added and placed in the heat exchanger to the respective required treatment temperature, injected via the pressure line 21 into the nozzle housing 39 of each of the transport nozzles and there with the transport medium flow applied to the continuous strand of goods 4. At the same time treatment liquor is applied via the line 21 and the nozzle 29 in the areas of the respective reel 5 on the fabric strand 4 before it enters the nozzle cone 35. The division of the treatment liquor onto the nozzle housing 39 and the treatment flotation nozzle 29 can be carried out with the two control valves 20, 32 (FIG. FIG. 1 ). As already mentioned, treatment liquor is also via the line 21 a of FIG. 3 and applied to the product strand 4 via the injection channels 40.

While in the described embodiment the treatment flotation nozzle 29 opens above the reel 5, the arrangement can also be made such that the mouth of the treatment flotation nozzle 29 lies in the area between the axis of rotation 28 of the reel 5 and the fabric strand inlet into the nozzle cone 35. This is in FIG. 1 schematically by a line indicated by dashed lines possible, which includes a control valve 32a. It is also conceivable, the application of the treatment liquor on the strand of goods prior to its entry into the nozzle cone 35 distributed over a surface or at several locations in the section between the rotation axis 28 and the nozzle cone 35.

In the FIGS. 4 to 6 As a further example of a wet treatment machine according to the invention, a high-temperature (HT) piece dyeing machine is illustrated according to the aerodynamic principle, of which FIG Fig., 4 essentially only the container 1 is shown, which is designed as a closed, cylindrical pressure vessel. The machine is a so-called multi-storage machine and again contains four Venturi transport nozzles 6, which are arranged in the container 1 in the axial direction next to each other. The each transport nozzle 6 associated reel 5 is in this case arranged such that there is a substantially horizontal path of the product strand 4 between the reel 5 and the transport nozzle 6.

With the FIGS. 1 to 3 the same parts are provided with the same reference numerals and not explained again. In the figures not essential parts of the machine are not shown for the invention. For details, reference is also made, for example, to the EP 0 945 538 A1 ,

The drive of the product strand 4 in the respective transport nozzle 9 is effected by the application of a gaseous transport medium, ie, as a rule, air, steam or an air-vapor mixture. For this purpose, the blower 11 is arranged in the container 1 in the region of a container end side, which is driven by an electric motor 11a and a pressure channel 13 which opens into a substantially over the axial length of the four memory 3 extending transport medium distribution box 41. The fan 11 is connected on the suction side with the coaxial with the cylindrical container 1 suction pipe 42 which extends over the axial length of the container 1 extends and has on its wall a corresponding perforation.

The transport medium distribution box 41 is closed on one end face 150 and connected on its opposite end face to the pressure channel 13 of the blower 11. It has a substantially rectangular shape (see. Fig. 2 ). Its upper, top wall 43 is designed to adapt to the curvature of the shell of the container 1 roof-shaped.

In the transport medium distribution box 41, the four transport nozzles 6 in the particular from Fig. 4 apparent way parallel to the axis used side by side. Each of the transport nozzles 6 has a nozzle cone 35 which, with a part of a coaxial diffuser 37 widened to a catching nozzle 37, delimits the coaxial annular gap 38 through which the transport medium flows uniformly into the diffuser 37. The nozzle cone 35 includes the coaxial passageway 36 for the product strand 4, wherein the passageway 36 consists of a cylindrical part and a fabric strand inlet forming funnel-shaped widening coaxial part 46, to which the cylindrical part adjoins.

How out Fig. 5 can be seen, the transport nozzles 6 are inserted into the transport medium distribution box 41 with horizontally oriented nozzle longitudinal axis such that their nozzle cone 35 and its diffuser 37 penetrate each sealed box side walls each sealed.

In operation, the space enclosed by the transport medium distribution box 41, in which the annular gaps 38 of the transport nozzles 6 lie, is acted on by the blower 11 with transport medium, so that all four transport nozzles 6 promote their respective product strand 4 evenly. The transport medium distribution box 41 with inserted transport nozzles 6 operates according to the so-called common rail principle and allows to ensure a very uniform Transportmediumsbeaufschlagung all transport nozzles.

As in particular from Fig. 6 can be seen, the nozzle cone 35 of each of the transport nozzles 6 is provided with means for injecting a treatment liquor in the passage 36, which, as indicated by arrows 240, circumferentially around the wall of the passage channel 36 evenly distributed. These injection means have the injection channels 40, which are formed in the nozzle cone 35 and open into the funnel-shaped widening portion 46 of the through-channel 36. The mouths of the injection channels 40 are, as already mentioned, evenly distributed in the circumferential direction over the passage wall. FIG. 6 shows that the injection channels with respect to the nozzle longitudinal center axis 47 are arranged inclined so that their axis with the longitudinal central axis 47 each includes an angle whose apex points in the direction of web travel 10. On its side opposite the mouth side, the injection channels are connected to the interior of the patch on the nozzle cone 35 and surrounding this annular channel 410, which is connected to the not shown line 21 a of FIG. 3 connected.

The treatment liquor entering from the injection channels 40 into the through-channel of the nozzle cone 35 is brought into intimate contact with the continuous strand of goods 4 at the exit from the injection channels 40. Since the injection channels 40 are arranged inclined with respect to the longitudinal axis of the nozzle in the direction of travel of the web, the treatment liquor emerging from the injection channels here too has a component of movement in the direction of travel of the web supports the product strand transport. The loading of the annular channel 410 with the treatment liquor takes place under a pressure which is selected such that the speed of the component of the treatment liquor entering into the through-passage 36 is approximately equal to the running speed of the commodity strand 4. However, depending on the particular process conditions, the velocity of the motion component may be greater or less.

Alternatively, the injection channels 40 may also be replaced by an annular annular gap which communicates with the annular channel 410. Embodiments are also conceivable in which a plurality of adjacent rows of injection channels 40 and / or a plurality of correspondingly arranged annular gaps are present in the axial direction of the through-channel 36.

In principle, there is also the possibility of arranging injection channels or annular gaps in the cylindrical section 45 of the through-channel 36, which is indicated for the sake of order.

Also in this embodiment, similar as in FIG. 1 further means for applying treatment liquor are provided on the product strand, which open in the Warenstranglaufwegabschnitt between the reel 5 and the nozzle cone 35. The reel 5 is arranged here, moreover, directly in the area of the operating opening 2 in the container 1, as this FIG. 6 shows.

Finally, it should be mentioned that the invention is not limited to use in a wet treatment machine according to the aerodynamic principle. She can also join JET wet treatment machines are used, which work with a liquid transport medium.

Claims (19)

1. Wet treatment machine for textile fabrics in rope form, with

   • a closed container (1),

   • a venturi transport system (6), to which a stream of transport medium can be applied to drive a continuous rope of material (4) circulating in the container (1) in a predetermined direction of circulation (10) and which has a nozzle ring gap (38), through which the stream of transport medium flows and which is delimited on one side by a cone (35) with a through channel (36),

   • winch elements (5), which are arranged in front of the transport system in the running path of the rope of material and by means of which the respective rope of material can be directed into the transport system,

   • elements for applying a treatment liquor to the rope of material (4) in a section of the running path of the rope of material lying between the region of the winch elements (5) and the nozzle ring gap (38) of the transport system,

   characterised in that the elements for applying a treatment liquor to the rope of material (4) have elements for injecting treatment liquor into the through channel (36) of the cone (35), which discharge around the channel wall delimiting the through channel (36).
2. Machine according to claim 1, characterised in that the elements for applying treatment liquor to the rope of material are arranged so that the treatment liquor discharging from them has at least one movement component in the running direction (10) of the rope of material.
3. Machine according to claim 1 or 2, characterised in that the winch elements have at least one winch (5) rotatable around a rotational axis and elements (29) for applying treatment liquor discharge in a region above the winch (5).
4. Machine according to claim 1 or 2, characterised in that the winch elements have a winch (5) rotatable around a rotational axis and elements (29) for applying treatment liquor discharge in a region located between the rotational axis (28) and the cone (17) of the transport system.
5. Device according to claim 3 or 4, characterised in that elements for applying treatment liquor discharge in the region of the winch elements via spray elements (29).
6. Machine according to claim 5, characterised in that the spray elements have a spray nozzle (29).
7. Machine according to claim 6, characterised in that in the region of its nozzle opening the spray nozzle has an opening axis (34), which encloses an angle of less than 90° with the running direction (10) of the rope of material.
8. Machine according to one of the preceding claims, characterised in that a treatment liquor pressure pipe (21) discharges in a nozzle housing (39) of the transport system surrounding the nozzle ring gap (38).
9. Machine according to claim 1, characterised in that the injection elements discharge in such a way in relation to the longitudinal centre axis (47) of the through channel (36) that treatment liquor entering the through channel from them has a movement component in the running direction (10) of the material.
10. Transport means according to claim 9, characterised in that the injection elements are arranged to discharge at an angle to the longitudinal centre axis (47), the vertex of which points in the running direction (10) of the material.
11. Transport means according to claim 1, characterised in that the injection elements have injection channels (40), which discharge in the through channel (36) and are distributed around the channel wall.
12. Machine according to claim 11, characterised in that the injection channels (40) are arranged so that their openings are distributed uniformly over the periphery of the through channel (36).
13. Machine according to one of claims 9 to 12, characterised in that the injection elements have at least one circumferential ring gap penetrating the wall of the through channel (36).
14. Machine according to claim 1, characterised in that the through channel (36) of the cone has a section (46), which widens out in a funnel shape and forms a feed funnel for the rope of material (4), and that the injection elements are arranged to discharge in the region of this section.
15. Machine according to claim 1, characterised in that a distribution area with treatment liquor applied to it and injection elements connected to it is provided.
16. Machine according to claim 15, characterised in that the distribution area is formed by a ring channel (410) attached to the cone.
17. Machine according to claim 1, characterised in that it has a transport medium distribution area (41), which can have a gaseous transport medium applied to it, and that the transport nozzle (6) is arranged so that its ring gap (38) lies in this area.
18. Machine according to claim 17, characterised in that it has a plurality of transport nozzles (6) and that all transport nozzles are arranged so that their ring gap (38) lies in the common area.
19. Machine according to claim 15 or 16, characterised in that the distribution area is configured in an elongated transport medium distribution box (41), which is connected to a transport medium source and into which the transport nozzles (6) are directly inserted.

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