WO1998031862A1

WO1998031862A1 - System and device for feeding a flotation agent to at least one treatment unit for strip-type textile material

Info

Publication number: WO1998031862A1
Application number: PCT/DE1998/000019
Authority: WO
Inventors: Werner Hartmann; Bernd Pesch; Jürgen BOSS
Original assignee: Küsters Prozesstechnik Gmbh
Priority date: 1997-01-17
Filing date: 1998-01-07
Publication date: 1998-07-23
Also published as: DE19701472C1

Abstract

The disclosed system (100) is intended to feed a flotation agent to at least one treatment unit for strip-type textile material. The flotation agent contains a number of components in a quantity ratio which may vary depending on the receipt. The components of the flotation agent are directed by means of dosing pumps from the various storage containers (10) to intermediate containers from where the flotation agent, prepared from said components, is pumped to the treatment units. The components are fed altogether during the loading time to other intermediate containers, with a quantity ratio, however, which may vary depending on the receipt.

Description

Method and system for supplying at least one treatment station for web-like textile goods

Treatment fleet

The invention relates to a method according to the preamble of claim 1 and a corresponding system according to the preamble of claim 5.

A generic method and such a system are known from DE 43 05 438 Cl. In this known embodiment, the components required to prepare a treatment liquor are metered from a plurality of storage containers to a distributor head, from which the components are discharged into collecting containers, from which they reach intermediate containers in which mixing devices are arranged. The number of components mixed therein to the treatment liquor is metered from the intermediate container to the treatment stations. In the known embodiment, as can be seen from column 5, lines 7 to 14 of DE 43 05 438 Cl, the respective component is dispensed from the storage container in question into the collecting container until the amount required according to the recipe is reached. It can the case thus occurs that the component in question runs out longer than another component of the treatment fleet to be produced from the outlet point of the one storage container in the distributor head. This can result in concentration differences in the total amount of liquor in the collecting container, which must be eliminated by prolonged mixing. It is also not easy to produce particularly small quantities of treatment liquor per unit of time with this method of working. The invention is based on the object of designing a generic method and such a system in such a way that no difficulties arise in the preparation of even small amounts of uniformly mixed treatment liquor. This object is achieved in its procedural aspect by the invention reproduced in claim 1.

With this procedure, a specific component is not added, as in the prior art, until the amount of the relevant component required for a specific batch quantity in the collecting container has been reached. Rather, all components are added at the same time, the flow quantities of the individual components being dimensioned in accordance with their recipe-related quantitative ratios. Everything that is brought up and brought together in components at any moment corresponds to the respective recipe portion in terms of its flow rate. A certain batch of batches is no longer prepared intermittently, which can only be further processed when all components have reached their recipe-based portion. Rather, the work is carried out continuously, and the flow of the components in the proportions corresponds to the recipe proportions. The supply of the components can be interrupted at any moment without any fluctuations in the composition occurring. The collecting containers of DE 43 05 438, which had to be filled first with a certain amount of the components until the correct composition was achieved, can be saved by the invention. A simultaneous inflow of all components in the recipe-related quantity ratios is fed to the intermediate container.

In principle, the invention can already be implemented if only one treatment station has to be loaded for which only one treatment liquor has to be able to be produced. Then only the components for this one treatment liquor are brought together at the same time in the recipe-related quantity ratio.

However, the preferred embodiment, which is more important in practice, provides for the loading of several treatment stations with different treatment fleets. It is then the procedure for each individual treatment fleet as it is for only one existing treatment fleet. With the different treatment fleets, the different components are then just in the corresponding formulations

Quantities brought together.

According to claim 3, in addition to the recipe-related quantitative ratio, the total amount of the components required for a specific treatment liquor can also be controlled, and in particular while maintaining the recipe-related quantitative ratio for each total amount. In this way, it is adapted to consumption. Depending on the type of treatment liquor, on the type of web-like textile goods to be treated and in particular on the working speed driven in the individual treatment station, the time required for the treatment liquor can be very different, which can be set by the control in question.

Another step is the automatic regulation of the total quantity according to claim 4. For example, the

Treatment fleet consumption determined in a foulard are when the web-shaped textile material in the pair of squeeze rollers is squeezed to a predetermined moisture content. The squeezed treatment liquor runs back into the trough of the foulard, and it can thus be determined how much treatment liquor is required to maintain a certain level in the treatment trough.

The apparatus of the invention is the subject of claim 5. Claim 6 reflects the extension to several treatment stations.

An important part of the system is the common distribution head according to claim 7, which, however, is already known per se from DE 43 05 438 Cl. The distribution head is for everyone

Storage container connected. It has a number of exit points equal to the number of storage containers. If there is only one treatment station with a specific treatment liquor, a number of outlet points of the distributor head which corresponds to the number of components of this one treatment liquor is sufficient. If, however, a plurality of treatment liquors are to be produced for a plurality of treatment stations, the distributor head has a correspondingly enlarged number of exit points, of which only those are opened during the production of a specific treatment liquor which bring in the components required for this specific treatment liquor.

The intermediate containers assigned to the various treatment stations are brought into alignment with the distributor head one after the other. As such, a relative movement between the intermediate containers and the distributor head is sufficient. However, since it is practically difficult to provide the distributor head in a larger number of movable feed lines and to move it over a greater distance, the preferred embodiment according to claim 9 is the movement of the intermediate container, be it as a rotary movement or as a linear movement. In practice, the procedure is such that the individual intermediate container is supplied with so much total amount of components in their recipe-related quantity ratio that the demand can be covered from the intermediate container for a certain time. The distributor head then serves the other intermediate containers. If the fill level in one of the intermediate containers falls below a certain level, which is dimensioned such that in any case there is no interruption to the supply of the treatment station, this intermediate container is replaced by the

In accordance with the recipe applicable to this intermediate container, the supply head is supplied with an inflow of all components at the same time in the recipe-related quantity ratio until an upper fill level is reached.

A system according to the invention is shown schematically in the drawing.

The system, designated as a whole by 100, comprises a series of storage containers 10 for the components of all treatment fleets. In the schematic representation, only two such storage containers are shown completely, while in practice, when several, e.g. four treatment stations are to be loaded to handle thirty to fifty such storage containers 10. Each storage container 10 is connected via a filter 1 and a metering pump 2 to a line 3 which leads to a distributor head designated as a whole by 20. In the distributor head 20, the line 3 opens into a 2-way valve which, in a first position, the line 3 with a short supply line 5 to an outlet element

6 connects, which is essentially designed as a horizontal plate, on the underside of which the outlet points 7 are attached in the form of short outlet nozzles and are combined in a dense arrangement. In the second position of valve 4, line 3 is connected to a

Return line 8 connected at a point 9 between the filter 1 and the metering pump 2 in the feed line to the Dosing pump 2 opens. The metering pump 2 thus runs continuously and either delivers its delivery rate via the supply line 5 at the assigned outlet point 7 or allows it to circulate via the lines 3 and 8. When switching over, there are no pressure surges that could distort the dosage. There are also no start-up problems. The arrangement of elements 1 to 9 is present for each of the approximately thirty to fifty storage containers 10 of the system 100. A corresponding number of valves 4 must be provided. Because these valves are significant

Take up space, it is not possible in practice to arrange the outlet points 7 directly on the valves. This would have the consequence that the exit points 7 extend over a too large floor plan. The valves 4 are rather arranged separately and connected via the short feed lines to the outlet element 6, in which the outlet points 7 can be arranged close to one another in plan view.

The reason for this close arrangement is that the entirety of the exit points 7 must be located inside the opening plan of intermediate containers 30 provided under the exit element 6. The component emerging at the exit points 7 namely falls into the intermediate container 30. Since the treatment liquors are composed differently, all the outlet points 7 must fit over the intermediate containers 30 and are therefore so close to one another.

In the exemplary embodiment there are four intermediate containers 30 which are assigned to four treatment stations (not shown) in which the treatment liquor is applied to a textile web, for which purpose any known application device can be used.

The intermediate containers 30 are each connected via a flexible line 11 to a quantity-controlled pump 12, the outputs 13 of which lead to the supply line to the respective one

Treatment station are connected.

The lines 11 are movable because the four intermediate Container 30 of the embodiment are arranged on a common base plate 14 which can be shifted in such a straight line by a drive shown only by the arrow 15 that an arbitrarily selectable intermediate container 30 can be brought under the distributor head 20 one after the other. It goes without saying that a rotating arrangement could also be chosen.

Each of the intermediate containers 30 has a fill level sensor 16 for a lower fill level and a fill level sensor 17 for an upper fill level. This is only indicated in the intermediate container 30 on the left in the drawing. When the lower fill level is reached, the base plate 14 is displaced such that the intermediate container in question passes under the distributor head 20 and the components resulting in the corresponding treatment liquor are refilled until the upper fill level is reached, whereupon the inflow is stopped.

The system is controlled by a control device 40. The control device 40 contains a memory part in which the recipes for the individual treatment liquors are stored.

The most important function of the control device 40 is to control the metering pumps 2 in such a way that they always convey the components from the storage containers 10 that are required for the treatment liquor of a particular treatment station in the ratio of the quantities required for the formulation. In the relevant intermediate containers 30, mass flows of the individual components are thus simultaneously conveyed during the loading time, the ratio of which corresponds to the recipe at any moment. The valves 4 responsible for these components are opened and closed or reversed at the same time.

In addition, the control device 40 controls the total quantity of components dispensed per unit of time in their recipe-related temporal quantity ratio. No matter how much in total an intermediate container 30 per unit of time, the recipe is always followed.

The control device 40 also controls the start and the end of the loading of an individual intermediate container 30 via the sensors 16 and 17. When the upper sensor 17 is reached, all valves 4 involved in the treatment fleet concerned are switched over to circulation. The delivery of components from the exit points 7 stops suddenly. The drive 15 for the selection of the intermediate containers 30 to be loaded can also be controlled by the control device 40, although manual control would also be possible in this respect.

The most important thing is that the total flow supplied to the individual intermediate container 30 has the recipe-related composition at every moment and for every size. It is therefore also possible to produce only very small quantities of a particular treatment liquor without a corresponding fluctuation in the composition, with a correspondingly low requirement. The same applies to very large ones

Amounts. The system can therefore cope with a very different need for several treatment stations running in parallel.

The sensor control of the fill level of the intermediate container 30 can be dispensed with under certain circumstances if the total quantity of the components supplied by the metering pumps 2 corresponds exactly to the consumption per unit of time. Then the components run continuously in the relevant intermediate container 30 and become the same without changing the level in the respective one

Pump 12 supplied to the treatment station concerned.

It also goes without saying that it is not absolutely necessary to always fill the intermediate containers 30 between the lower and upper levels determined by the positions of the fill level sensors 16, 17. Any intermediate quantity can also be added. For example, at the end of a batch by measuring fleet consumption and measurement of the remaining length of the batch, the remaining need for treatment liquor is determined and added. The switching times of the valves 4 for the last addition in a batch can thus result from a calculation.

Means for mixing the components can be provided in the intermediate containers 30 in the usual manner.

Another important moment is that when the supply in one of the intermediate containers 30 for

Neige goes and has to be topped up, no differences in the composition of the added amount, however large it may be, are to be expected, since the control device precisely sets the previous proportions and the previous total flow in the

Location is.

Claims

Patent claims

1. Method for supplying at least one treatment station for sheet-like textile goods with a treatment liquor assigned to the treatment station and to be applied there to the textile goods, in which the treatment liquor is produced from a number of components in a recipe-related quantity ratio, in which the components are separated until the treatment liquor is produced held and brought together and mixed in the manufacture of the treatment liquor and in which the treatment liquor thus produced is fed to the treatment station, characterized in that the components of the treatment liquor are all brought together only at the same time and always with a constant recipe-related quantity ratio.

2. The method according to claim 1, characterized in that a plurality of treatment stations are present and an individual treatment liquor is produced separately for each treatment station and is fed to the respective treatment station separately.

3. The method according to claim 1 or 2, characterized in that the total amount of the components brought together for a treatment station per time unit is controlled in compliance with the recipe-related quantity ratio.

4. The method according to any one of claims 1 to 3, characterized in that the total amount of the components brought together for a treatment station per unit of time is regulated in compliance with the recipe-related quantity ratio in accordance with the consumption of the web-like textile material.

5. Plant for supplying at least one treatment station for sheet-like textile goods with one of the

Treatment station assigned and there to be applied to the textile material, consisting of several components in a recipe-related quantity ratio, with a number of storage containers (10) corresponding to the total number of components for keeping the components ready, with an intermediate container assigned to the treatment station and connected to it via a line (30), each with a device (2) assigned to a storage container (10) for metered conveying of the respective component from the storage container (10), with a separate line (3) connected to the conveying device (2) for each component of the storage container (10) to an exit point (7) from which the component enters the intermediate container (30) and with a conveyor (12) for conveying the components brought together in the intermediate container (30) via a line to the associated one Treatment station, characterized in that a control device (40) is provided, by means of which the devices (2) for the metered conveying of the components of a treatment liquor can be controlled in such a way that the components of the treatment liquor are all associated with the associated intermediate container only at the same time and always with a constant recipe-related quantity ratio per unit time (30).

6. Plant according to claim 5, characterized in that a plurality of treatment stations and an equal number of intermediate containers (30) are present, each of which is uniquely assigned to a treatment station, and that by means of the control device (40) all of the components for each individual treatment fleet only can be fed to the associated intermediate container (30) at the same time and in an always constant recipe-related quantity ratio per unit time.

7. Plant according to claim 5 or 6, characterized in that on all storage containers (10) common distributor head (20) is provided, which has at least one of the number of components of a treatment liquor corresponding number of downwardly open exit points (7), each are separately connected to one of the lines (3) of the conveying device (2) and are arranged closely next to one another in a floor plan area which is located entirely within the opening floor plan of the respective intermediate container (30) arranged under the distributor head (20).

8. Plant according to claim 7, characterized in that the distributor head (20) is connected at several treatment stations with the storage containers (10) for all components required for all treatment liquors and has an exit point (7) for each of these components.

9. Plant according to claim 7 or 8, characterized in that the assigned intermediate containers (30) can be brought alternately under the distributor head (20) at several treatment stations.

10. Plant according to one of claims 5 to 9, characterized in that the intermediate containers (30) have level sensors (16, 17) which are connected to the control device (40).