WO2019043258A1

WO2019043258A1 - System for the wet treatment of textile material

Info

Publication number: WO2019043258A1
Application number: PCT/EP2018/073754
Authority: WO
Inventors: Johannes Schmitz
Original assignee: Fong's Europe Gmbh
Priority date: 2017-09-04
Filing date: 2018-09-04
Publication date: 2019-03-07
Also published as: TW201920799A; KR20200046039A; JP2020532665A

Abstract

A system for the wet treatment of textile material has a treatment container (1) for holding treatment baths for chemical processes and/or washing or rinsing operations and a single mixing container (27) for the addition of additives to the particular liquor forming a treatment bath. Assigned to the mixing container (27) is a delivery device (34), through which additives introduced into the mixing container in solid and/or concentrated form and in small quantities are able to be admixed with the treatment liquor.

Description

Plant for the wet treatment of textile goods

The invention relates to a system for the wet treatment of textile material with a treatment container for receiving treatment baths for chemical processes and / or

Washing or rinsing operations and with a batch tank for addition of additives to the respective liquor forming a treatment bath. The treatment tank and the batch tank are in fluid communication with each other via conduits containing a pump connected to the batch tank for conveying the contents thereof into the treatment tank and having associated therewith control means by which the addition of additives to the liquor can be controlled as required.

For example, dyeing processes for textile products are usually made in several treatment steps, such as pre-treatment, pre-bleach, full bleaching, dyeing, rinsing and Rei ^¬ nigungsbehandlung and treatment. For these treatments, different treatment baths are used in the example pressure-resistant treatment container. For this purpose, the treatment container corresponding chemicals and dyes are fed sequentially in a specific for each fiber type sequence.

In practice, this usually three to four sample containers are used per dyeing plant, of which used for the preparation of initial baths batch tank with 100 percent of the liquor volume of the treatment tank and for the preparation of the dye batch tanks with 12% to 18% of the total fleet volume, while come the dye extract effecting Che ^¬ cals (liquor at reactive dyes, acid dyes at PA, etc.), mixing container with 8% to 10% of the Flot ^¬ tenvolumens for the addition of the used. Since the chemicals have a great influence on the levelness of the dye, they are metered into the treatment tank relatively slowly, typically between 30 minutes and 60 minutes, linear, progressive or degressive. It is known to measure the liquid level of the particular approach to container Steue ^¬ tion of dosage and to use as a control variable for the do ^¬ siervorgang. In order to achieve sufficient accuracy Dosiergenau ^¬, these containers must therefore have a sufficient height with a useful feedback signal can be won th ^¬ NEN. The level signal is readjusted by a controller of the linear, progressive or degressive setpoint curve. For this reason, these chemicals can not be supplied from a larger batch tank, but it must be used in its volume adapted smaller container, which allows to obtain a usable Ni ^¬ veausignal with the required accuracy. For the addition of solids, a separate container with a volume of about 7% to 15% of the liquor volume of the treatment tank is used.

The majority of these different approach container takes up a considerable part of the AufStellfläche the dyeing system ^¬ claim. In addition, results in a high manufacturing gungs- and material costs, with the result that the on ^¬ wall for the container almost 40% of the cost of the whole dyeing machine can make.

From WO 2011/104665 a system for Nassbehand ^¬ development of yarns or textile products is known, which works with two Ansätzbehältern, both of which are provided with its own pump and the fluid communication with each other and stand with a metering valve, can be introduced into the treatment container via the added in the Ansatzbehäl ^¬ tern addition agent. One of the two mixing container is adapted to receive the entire fleet volume of the treatmen ^¬ lung container and formed with a cylindrical upper part and a conical lower part, where ^¬ at two container parts level sensors are assigned and a heater is provided in the lower container part. The container is not designed for the addition of solids and concentrated additives. Concentrated additives must usually be added by adding

Fresh water diluted, mixed and heated and then introduced into the treatment bath of the treatment tank.

The object of the invention is to provide a system of the type mentioned for the wet treatment of textile, which is characterized by a small footprint and is universally applicable with high efficiency.

To solve this problem, the system according to the invention has the features of claim 1.

The new plant works with only one approach tank for receiving the liquor volume of a treatment bath, ie the batch tank is sized in size so that it can absorb 100% of the liquor volume. In addition, the batch container is adapted to receive and dispense adding agents having a volume smaller than the liquor volume. In this case, the container Ansatzbe ^¬ a conveyor is associated, are ^¬ miscible to by the introduced in solid and / or concentrated form and in small quantity in the tank approach addition means the fleet. The conveyor allows a dosage even small amounts of additives in the treatment tank. For example, minimum volumes of about le ^¬ diglich 1% of the total liquor volume can min to 60 min linear, progressive or degressive the treatment containers are supplied in a period of about 30 minutes.

In a preferred embodiment, the conveying device has an ejector with a motive nozzle and a mixing chamber, whose motive nozzle is acted upon by a float propelling flow conveyed by the pump and whose

Mixing chamber is connected to the batch tank. The system may include a pump containing flushing circuit for pumped liquor that passes through the batch tank, contains the conveyor and is selectively operable.

The batch container is connected to the treatment tank with advantage via lines containing the pump and a downstream of this volumetric metering device, so that a volumetric dosing of the additive is possible. Particularly cost Ver ^¬ ratios result if the existing pump with a nachgeschal ^¬ ended metering valve is used for promoting additive. This dispensing valve can be for example an on-off valve, which is controlled according to the program of the control ^¬ means, it zweckmäßi ^¬ gerweise is controlled by the control means with a pulse-width modulation according to the respectively desired Dosiercha ^¬ rakteristik. In principle, however, other metering valves are also useful which allow a suitable volumetric time-dependent control of the metering of the feed additive to be added to the liquor.

As already mentioned, in the case of textile edelungsprozessen, performed in the course of process control, depending on the method used for about three to ten conducting liquid as chemicals dissolved solids or to the treatment ^¬. These liquids are often used in practice in a generally open container by adding

Fresh water diluted, mixed and heated and then introduced into the treatment bath. To prepare the flues ^¬ fluids containers of different sizes are used today. Each of these containers is provided with a pump, Hei ^¬ tion, mixing device and a water supply.

The amount of fresh water supplied but increase the liquor ratio in the treatment tank considerably. For example, the liquor ratio for medium to dark color depths increases from 1: 3.5 to 1: 6 to 1: 7. Many Che ^¬ icals and excipients must in milliliters per liter of liquor, based on the final volume, in the above example 1: 7, the treatment bath be formulated. For the ^¬ se group of chemicals and auxiliaries an additional water consumption, which would not be necessary for the actual refining process is created by the addition of fresh water. The thus unnecessarily prolonged treatment bath must be heated entirely and cooled, additional Ener ^¬ energy requirement (steam), and an increased consumption of cooling water entails.

The approach tank of the new plant is designed to accommodate introduced in small amounts additives that are present in solid and / or concentrated form. The chemicals that make up these additives and

Excipients can be introduced directly into the batch container. However, the arrangement can also be such that at least one buffer container arranged to receive such additives is assigned to the batch container, which is connected to the batch container in fluid connection. tion and is set up to contain additives in concentrated form. This allows the Chemi ^¬ chemicals and auxiliary products initially at least one fill buffer ^¬ container in in concentrated form. At a given time by the controller, the liquids can be transferred by associated valve means, for example pulse ^¬ manner with an open-close valve or with a proportional opening valve in the batch tank, or preferably by gravity, be discharged into the treatment tank. From the batch container, the so introduced adding means reach the conveyor, by which they are admixed to the liquor. In this way, Kings ^¬ nen chemicals and additives, that are generally supplied to the addition means without the use of diluted quantities of fresh water to the treatment. As mentioned, this results in a reduced consumption of chemicals, instruments, steam and cooling water, with shorter process ^¬ times can be achieved because of a reduced number of rinsing steps.

Further embodiments and advantages of the new system will become apparent from the following description of an embodiment of the invention.

In the drawing show:

1 shows a jet dyeing plant according to the invention, in a plan view and a schematic representation,

FIG. 2 shows the hydraulic line diagram of the jet dyeing plant according to FIG. 1 in a schematic representation, illustrating the parts essential for the invention,

Figure 3, 4 the secondary fleet cycle of the pipe plan 2, in a schematic representation illustrating different operating states,

5, 6 are diagrams for illustrating different modes of operation of the metering valve and the secondary fleet circuit according to FIG. 3, FIG.

7 shows the ejector of the auxiliary fleet cycle according to FIG. 3, 4, in a schematic sectional illustration,

FIG. 8 shows the preparation vessel of the jet dyeing plant according to FIG. 1, in a schematic partial representation,

FIG. 9 shows the attachment container according to FIG. 8 in conjunction with a buffer container and an ejector, in a corresponding perspective schematic illustration and FIG

Figure 10 shows the approach container of the jet dyeing plant of Figure 1, in a modified embodiment and in a schematic representation.

The illustrated in Figure 1 in a schematic exemplary representation of wet treatment plant for textile material is a so-called jet-dyeing machine for diskontinu ^¬ ous treatment of cord fabrics. It has a closed treatment tank 1 in the form of a pressure-resistant boiler with a cylindrical container wall 2, the ends of which is welded pressure-tight with dished or basket bottom sheets 3. The container wall 2 is provided on the operator side with a closable loading and Entladeöff ^¬ tion 4. In the treatment tank 1, as can be seen from the schematic representation of Figure 2, a transport nozzle assembly 5 is arranged, which allows to put an indicated at 6 in Figure 2 endless strand of goods in an arrow 7 for the purpose of treatment in circulation.

The transport nozzle assembly 5 has a hydraulically operated transport nozzle 9, the details of which are described in ^¬ example in DE 10 2013 110 491 B4. The transport nozzle 9 is provided on one side with a goods strangeinlassöffnung 10 and connected on the other side with a transport tube 11, through which the suctioned via the inlet opening product strand 6 is conveyed to an outlet sheet 12, from which passes the goods strand in a goods storage , The emerging from the outlet sheet 12 strand of goods is thereby tabulated to produce a moving in the store bundle of goods. The belonging to ^¬ tablature, which acts on the transport tube 11 and / or the outlet sheet 12 is indicated schematically at 13, while 14 an associated fan is illustrated schematically. For further Einzelhei ^¬ th is, for example, to DE 10 2005 022 453 B3 ^¬ reported ver.

The transport nozzle 9 is located in a in Figure 2 with strong lines drawn main fleet cycle 15, which contains a main fleet pump 16 and in a departing from the fleet bottom of the treatment tank 1 main ^¬ fleet line 17, a transport nozzle 9 feeding main fleet flow generated, the flow direction is indicated by an arrow 18 and not by a heater 19 and others further shown per se known devices, such as filter 20 (Figure 1), etc. runs.

From the main fleet line 17 branches off at 21 (Figure 2) from a secondary fleet cycle, the line system 22 is shown in Figure 2 with thin lines and in the figures 3, 4 explained with its details. The conduit system 22 of the sub-fleet circuit has an associated at 21 with the main liquor line 17 feed line 23 containing a stop valve 24, and this downstream fleets ^¬ pump 25, which promotes a secondary fleet current in an arrow direction 26th The secondary liquor flow produced in this way is used to prepare treatment baths for the product strand 6 in the treatment tank 1 and to add chemicals, auxiliaries, etc., in short addition means, to these treatment baths as they are required for the respective treatment process.

For this purpose, in addition to the treatment tank 1, a batch container 27 is arranged, which has a substantially square cross- ^sectional shape in the illustrated embodiment, without being limited to this shape. The batch container 27 may also be cylindrical, polygonal or designed in another appropriate form. It has, how and a line 30 connected from the Figures 8, 9 erse ^¬ hen, a tapered for diagonal intersection of conical bottom 28 and is connected via a shut-off valve 29 (Figure 2) with the pressure side of the bath pump 25th The batch tank 27 is equipped with a level sensor 30, which allows to measure and display the liquid level of the liquid contained in the batch tank. At the lowest point of its bottom 28, the attachment container 27 is provided with a liquid outlet 31, which is connected via a line 32 to the mixing chamber 33 of an ejector 34, the basic structure of which can be seen from FIG. In the mixing chamber 33 opens a motive nozzle 35, which communicates via a line 36 and a valve 37 as the conduit 30 with the pressure side of the liquor pump 25 in connection. On the side opposite the motive nozzle 35 side, the mixing chamber 33 is connected via a short piece of pipe with a diffuser 38, to which a line 39 connects, which contains a check valve 40 and is connected behind this with the main fleet 17. The mixing chamber 33 is also connected via a line 41 and a check valve 42 on the suction side of the liquor pump 25 with the feed line 23 in connection.

From the verbun ^¬ with the pressure side of the liquor pump 25 which line 30 also goes from a line 43, which is connected via a metering valve 44 to the main fleet 17 and from the front of the check valve 44, a bypass line 45 goes off, which has a larger diameter and a shut-off valve 46 and also connected to the main fleet 17.

The approach tank 27 can be filled via valves 460, 47 and a line 48 from a water source, not shown, with three different fresh water types. In addition, can be fed directly into the line 45 in the region between the valve 46 and the main fleet 17 via a line branched off from the line 48 before the valve 47 and a line 51 in this angeord ^¬ netes valve. The JET dyeing system described so far operates as follows:

The approach container 27 is dimensioned for receiving the entire bath volume of the treatment bath of the respective treatment ^¬ step in the treatment tank 1. To give an example, the batch tank 27 contains a liquor ratio of 1: 4, ie, 300 kg of fabric

1200 1 liquid.

In a first treatment step of Ansatzbe ^¬ container 27 is filled via the line 48 with open valve 47 and an open valve 460 to the BE for a treatment ^¬ voted fresh water volume which is determined by the level sensor 30th

The valves 29, 37 40, 42, 44, 46 and 51 are closed ge ^¬ .

Depending on the treatment process the contents of the batch vessel can 27 without addition of any Zugabemit ^¬ tel directly from the liquor pump 25 on the dotted in Figure 3 the flow path through the mixing chamber 33 of the ejector 34, the open valve 42, the open valve 46 and via the bypass line 45 in the main fleet cycle

15 are fed. The bypass valve 46 is, as the conduit 45 is formed with a relatively large passage ^¬ cross-section, so that a rapid emptying of the neck tank 27 is ensured. The main fleet pump

16 conveys the liquor ^volume fed into the conduit 17 directly into the treatment vessel 1.

In a further treatment step, for example, a small amount of adding agent is to be metered into the treatment tank 1. This will add up to the total amount of introduced liquid volume in the approach tank 27 and detected there by the level sensor 30 and reported to the indicated in Figure 1 at 520 control device. For example, 10 1 metering agent should be metered at a 1000 1 container 1. The minimum volumes of the addition agent occasionally amount to only 1 percent of the total liquor volume of a treatment bath and must be metered in a period of 30 to 60 minutes linear, progressive or degressive depending on the formulation of the treatment bath in the treatment tank.

Since a desired actual value control would be too inaccurate during a 30 to 60 minute dosage via the level signal of the level sensor 30, the dosage is volumetric. To achieve this purpose and with the aim of a kostengüns possible ^¬ term development of the overall system, the existing fleet pump 25 used without ^¬ toward the downstream on-off metering valve 44 for this purpose. The Do ^¬ sierventil is driven by the control device 520 corresponding with the desired metering characteristic pulse width modulation. The volumetrically controlled feeding of the adding agents can take place in various ways, for which two possibilities are mentioned merely as examples:

1st metering valve 44 with constant flowcharacteristics ^¬ ristics

The metering valve 44 has a constant Druckcharak ^¬ teristics. Thus, the delivery of a Öffnungsim ^¬ pulse of the valve is maintained independently of the back pressure of the treatmen ^¬ lung container 1 constant, with the result that the delivery rate of the dosing unit in each metering pulse is exactly predetermined. For example, for an opening pulse of the valve of 0.1 s, for example the delivery rate independent of the back pressure of the treatment ^¬ container 1 is always 50 ml. For another dosing with an opening pulse of eg 3 s, the delivery ^¬ amount, regardless of the back pressure, always 1500 ml. The volume fractions during the opening and closing sections of the Valves are deposited in the controller.

The control of the control device 520 calculates the pulse times of the metering valve 44 required for the respective metering section and subtracts the quantities already conveyed into the treatment tank 1 from the total quantity determined at the beginning of the metering. The determination of the pulse width ratio is carried out by calculating the pulse and pause times in comparison with the respective desired progressive, linear or degressive metering of the medium to be dosed. The level sensor 30 of the batch tank 27 is not abge ^¬ asks during the dosage.

2. In the control curve stored in pumps Ver ^¬ connection with a pressure measurement in the treatment tank. 1

The delivery characteristic of the liquor pump 25 formed for example as Zentrifu ^¬ galpumpe is deposited approximately in the form ei ^¬ nes function graph in the control device 520th The static pressure in the treatment tank 1 is measured by a pressure sensor and supplied to the controller. By this two information, the operating point of the liquor pump 25 and thus the flow rate of the liquor pump for each back pressure can be determined without additional sensors. Because of the knowledge of the delivery rate of the liquor pump 25 and the selection of suitable pulse-pause widths for the metering valve 44 can each progressive, linear or degressive Feed characteristic can be realized in the desired feed times. Again, the level signal of the level ^¬ sensor 30 of the batch tank 27 is not used.

The basic control of the metering valve 44 is illustrated in the two diagrams of Figure 5, 6. In the illustration of Figure 5, the metering valve 44 is fully opened at each pulse and then immediately closed again. By appropriate choice of the opening and closing times and in particular the temporal Pulsab ^¬ states the continuous through the metering valve 44 För ^¬ amount is controlled as needed.

The illustrated in Figure 6 for the pulse shape Publ ^¬ nen and closing of the metering valve 44 differs from that of Figure 5 in that the dosing valve is kept open after the opening for a longer period of time before it is closed again. This type of pulse ^¬ wide control is determined in particular for relatively large flow rates.

The flow path in the described auxiliary metering of an addition agent from the batch tank 27 follows with closed valve 46 to the flow path shown in Figure 3, which extends in this case through the metering valve 44 in the main fleet 17, as in Figure 3 in the region of the metering 44th indicated by dash-dotted lines.

With the single approach tank 27, even small volumes of additives in volumetrically determinable increments up to minimal amounts of only 1 percent of the total volume can be added to the treatment tank 1 with the existing liquor pump 25 into the treatment tank 1, using the batch tank 27 for all feed operations. be brought. Such an operation is exemplified in FIG. 4:

In the approach container 27 is a small amount of an addition agent introduced, as is interpreted in Figure 8 at 500 ^¬ . After opening the valves 24, 37 and 40, the liquor pump 25 sucks liquor from the Hauptflottenlei ^¬ tion 17 and thus the treatment tank 1 and thus feeds the motive nozzle 35 of the ejector 34, which thus held on the line 32 in the approach tank 27 and preferably accumulated in the conical bottom region zugabemit ^¬ tel and mixed in the mixing chamber 33 with the liquor driving stream. The intensive mixing of the agent with the addition treatmen ^¬ lung fleet takes place in the mixing chamber. At the same time, the supplied liquid assumes the temperature of the treatment liquor. Subsequent to the mixing chamber 33, the mixture of the added liquid and the treatment liquor passes into the diffuser 38 of the ejector 34. Here, another finds

Mixing of the supplied liquid with the treatment liquor and a conversion of the flow energy into pressure energy instead. Behind the thus a conveyor and

Mixing device forming ejector 34 leads the line 39 into the main fleet 17 and thus directly into the main fleet cycle which passes through the treatment tank 1. If necessary, in the line 39 between the diffuser 38 and the main fleet line 17 bez. the static mixer or additional Ejekto- ren for further mixing and optionally Druckerhö ^¬ hung be added to the treatment tank 1.

The flow path in this mode of operation of the new system is indicated by dashed lines in Figure 4. As can be seen, the entry point 210 is at which the fleet coming from the ejector 34 via the line 39 into the Hauptflottenlei- tion 17 is fed in the flow direction 18 of the main fleet cycle seen behind the point 21 at which the line 23 of the secondary fleet cycle branches off from the main ^¬ fleet line 17, so that the liquor pump 25 sucks in ^¬ mer fleet from the treatment tank 1.

The added in the approach tank 27 addition agent can also be mixed or diluted in the approach tank 27 with liquor, for which purpose the valve 29 in the Lei ^¬ tion 30 is opened in a corresponding manner.

The batch tank 27 may also be used to introduce solids, for example, reactive dye salt. The solids are introduced into the batch tank 27 where they can be dissolved with liquor introduced via the duct 30 and the opened valve 29 before being or being sucked by the ejector 34 via the duct 32 and admixed to the liquor flow as described above.

The the side liquor cycle and the suction of introduced into the mixing container 27 the addition means controlled valves are controlled accordingly by the control device 520, whereby also in this case, a volumetric specific dosage, e.g., by appropriately Pulswei ^¬ least inflation in particular the valves 37, 40 in already he ^¬ Purified way can be done.

Many larger dyers now have automatic ^¬-specific delivery systems for chemical and / or dyes, that generally means addition. In order to avoid waiting times, it may be expedient to assign at least one buffer container 55 to the described central multifunctional batch container 27. Even with smaller systems, it may be useful to have a plurality of such buffer containers 55 len neck tank assign 27 to perform, for example, has already begun stains on the night shift and unmanned automatic ^¬ table over.

Such a buffer container 55 is shown by way of example in FIGS. 2 to 4. It is connected to the attachment tank 27 via a line 56 leading from its bottom, which contains a valve 57. In addition, it is a level sensor fed assigns ^¬ for it contains fluid 58th Via a line 59 and connected to the line 50 valve 60 can be supplied to the buffer tank 55 Frischwas ^¬ ser. The buffer tank 55 has a conical bottom 60, from the lowest point of the line 56 goes off, so that even small amounts of addition agent can flow without residue from the buffer tank 55.

In a preferred embodiment illustrated schematically in FIG. 9, the buffer container 55 is arranged laterally next to the attachment container 27 such that its liquid line 56 opens above the bottom 28 of the attachment container 27. Thus, the buffer tank 55 is connected to the batch tank 27 such that its contents, including the rinse water used for cleaning the buffer tank, can flow to the header tank 27 by gravity. The so introduced into the mixing container 27 the addition means are further blended according to the process conditions in the mixing container 27 and the subsequent mixing path and then returned to the treatmen ^¬ lung container 1, as has already been explained in detail.

In a typical mode of operation, feeds in the form of chemicals and excipients in concentrated form are charged into one of the buffer tanks 55. At a given by the controller 520 time are this adding means by discharging the located at the lower end of the buffer tank 55 valve 57 pulse manner with an open-close valve or with a proportional opening valve by gravity in the approach tank 27. This discharge process can take place over a predetermined time in the control of the apparatus linear, progressive or degressive. The liquid addition agent exits at the bottom of the buffer tank 55 placed valve 57 and runs to the lowest point of the bottom 28 of the conical ^¬ formed neck tank 27, from where it can be sucked off from the injector 34 in the manner already described, to that of to be added to the liquor pump 25 promoted liquor flow. Alternatively or simultaneously, such concentrated addition agent can also be introduced directly into the batch container 27, as has already been explained.

The new system thus allows a controlled supply of additives to ^¬ without additional fresh water consumption which represents a significant advantage of the system, as already explained. About the conveyor formed by the injector 34 can be sucked from the container and introduced into the approach tank 27 introduced additive in a small amount and concentrated form additive and then intimately mixed with the liquor stream are fed to the treatment tank. This eliminates the need for fresh water addition, which unnecessarily prolongs the treatment bath in the treatment tank. The waiver of the use of diluting fresh water quantities, which are supplied to the treatment bath, causes a verrin ^¬ siege consumption of chemicals, auxiliaries, steam, cooling water and results in shorter process times by a reduced number of rinsing steps, as already explained in the beginning ^¬ . In addition, the improved so fleets ^¬ ratio resulting, for example, in the discontinuous education Dyeing to improve the levelness of the dyeing or if the levelness is already sufficient, to a shortening of the dyeing times.

As already explained, the batch container exemplified in FIGS. 8, 9 allows the use of only one container for all feed operations to the treatment tank 1. It can optionally also be assigned a solid feed device (for example for salt for reactive dyeings) ,

For smaller dyeing machines, the batch tank 27 typically has a height of about 1100 mm and can be operated from above. As a rule, the container is closed at the top. On the lid there is a flap for the manual addition of additives.

For larger dyeing plants, the batch tank typically has a height of up to about 2300 mm. However, only the lower part of the container is often required for Dosiervor ^¬ sunsets, Färbebadansätze and Post. For these cases, the sample container 27a, which is only shown very schematically in FIG. 10, may advantageously be used. For the manual addition of additives, ie chemicals, dyes and solids typically at a height of about 1100 mm, a tight-closing flap 600 is ^{¬ introduced} , through which the additive can be filled. By the flap 600 such additives are, for example, filled into the container up to a filling height of about 1050 mm. A floating edge of 50 mm prevents leakage of the additives at the lower edge of the flap. This fill level then corresponds to approximately 25 to 35% of the Gesamtvo ^¬ lumen of the vessel, which is sized for receiving the Gesamtvolu ^¬ mens of a treatment bath. Also, this approach container 27a may of course have any appropriate shape, he may, for example, be cylindrical or polygonal. In any case, but it has a downwardly tapered bottom similar to the bottom 28 of the embodiment of Figures 8, 9th

The described container arrangement can be used for all types of discontinuous wet treatment plants, such as yarn, tree, jigger, jet strand dyeing plants, etc. Applications are also conceivable for continuous wet treatment plants and systems with non-pressurized treatment tank.

Claims

Claims:

1. Plant for the wet treatment of textile goods, comprising a treatment tank (1) for receiving treatment baths for chemical processes and / or washing or rinsing operations and with a batch tank (27) for addition of additives to the respective, a treatment bath-forming liquor, wherein the treatment tank and the batch tank are in fluid communication with each other via conduits containing a pump (25) connected to the batch tank for conveying the contents thereof into the treatment tank (1) and associated with control means (520) by which addition of adding agents to the tank is provided Liquor is controlled according to need, wherein the approach container (27) is dimensioned for receiving the liquor volume of a treatment bath, the batch container for receiving and dispensing Zugabemit ^¬ stuffs is set up with a volume that is smaller than the liquor volume and the approach container a conveyor (34) is assigned by the in solid and / or he concentrated form and in small amount in the approach container (27) introduced additives of the liquor are immiscible.

2. Installation according to claim 1, characterized in that it comprises a pump (25) and the conveyor (34) containing mixing circuit for pumped by the pump Flot ^¬ te, which is settable in fluid communication with the treatment tank (1).

3. Plant according to claim 1 or 2, characterized in that the conveying device an ejector (34) having a driving nozzle (35) and a mixing chamber (33) whose driving nozzle with a pumped by the pump (25) supplied liquor driving current and whose Mixing chamber with the approach container (27) is connected.

4. Plant according to claim 2 or 3, characterized in that it comprises a the pump (25) containing flushing circuit (29/30) for pumped by the pump liquor, which passes through the approach container (27) and optionally is effectively feasible.

5. Plant according to claim 4, characterized in that the flushing circuit passes through the conveyor (34).

6. Installation according to one of the preceding claims, characterized in that the batch tank (27) with the treatment tank (1) is connected via lines containing the pump (25) and one of these downstream, volumetrically operating metering device (44).

7. Installation according to claim 6, characterized in that the metering device has a metering valve (44), which is controlled by the control means (520) according to the program.

8. Plant according to claim 7, characterized in that the metering valve (44) is driven by a pulse width modulation.

9. Plant according to claim 8, characterized in that the metering valve (44) has a constant pressure characteristic, such that the flow rate per unit time is independent of a back pressure in the treatment tank (1).

10. Installation according to claim 8, characterized in that the pump (25) has a predetermined conveying characteristic and by the control means (520) in dependence on the pressure prevailing in the treatment vessel each a desired flow rate per unit time determining Be ^¬ operating point on the delivery curve according to the program is festleg ^¬ bar.

11. Installation according to one of claims 3 to 10, characterized ge ^¬ indicates that the ejector (34) is arranged at the bottom of the Ansatzbe ^¬ container (27).

12. Installation according to one of the preceding claims, characterized in that the approach container (27) is assigned at least one set up for receiving means of addition buffer container (55), which is in fluid communication with the Ansatzbe ^¬ container.

13. Plant according to claim 12, characterized in that the at least one buffer container (55) is adapted to receive additives in concentrated form.

14. Plant according to claim 12 or 13, characterized in that the at least one buffer container (55) with the approach container (27) is connected via lines containing the control device (520) controlled valve means (37) through which the flow of the Addition agent in the approach container (27) is programmable controllable.

15. Plant according to claim 14, characterized in that the at least one buffer container (55) arranged such is that its contents flow under gravity into the batch tank (27).