MACHINE FOR TREATING TEXTILE MATERIAL, ESPECIALLY FOR BEAM DYEING FABRIC

Abstract: In order to optimize the ration of the bath (kilograms of material to be dyed to kilograms of bath) as the treated quantity varies, the unit comprises a kier (2) and a reservoir (3), interconnected by a hydraulic line including at least one variable flow pump (8, 9), a flow controlling device (17) and a level controlling device (18) for the dyeing bath (10). The flow rate of the pumps (8, 9) is set by an electronic control unit (19), so as to ensure that the flow rate of a first pump (8) is adequate to guarantee the proper completion of the chemical dyeing process, and that the flow rate of a second pump (9) is high enough to ensure that the free liquid level of the bath will not contact the cloth during the treating phase, or that the cloth is never dipped into the dyeing bath (10).

Description: MACHINE FOR TREATING TEXTILE MATERIAL, ESPECIALLY FOR BEAM DYEING FABRIC The object of this invention is a unit for treating textile material, especially for dyeing and preferably on a cloth beam. The traditional dyeing units currently utilize a single container, both for treating the material and for holding the process liquid. For any given kier, the bathing ratio therefore changes with every change in the quantity of the material treated, resulting in negative effects on both the treating economy (increased energy outlays for chemicals and wastewater treatment per unit product) and the quantity of active ingredients, which in turn depend on the quantity of material treated and on the bathing ratio. The scope of this invention is to provide a unit for treating textile material, especially for dyeing and preferably on a cloth beam, capable of overcoming the mentioned drawbacks and of optimizing the bathing ratio. Another scope of this invention is to offer a unit for treating textile material, capable of minimizing the bathing volume at the same quantity of material treated, or of maximizing the quantity of material to be treated per bathing unit. A further scope of the invention is to offer a dyeing unit capable of guaranteeing a permanently constant and optimum bathing ratio, independently of the quantities of cloth to be treated and of the machine's nominal capacity. Not the least scope of this invention is to offer a unit for treating textile material, especially for dyeing and preferably on a cloth beam, of a simple type and limited cost in relation to its resulting advantages. These scopes are attained by a unit for treating textile materials, especially for dyeing and preferably on a cloth beam, according to claim 1, which is being referred to for brevity. It is advantageously possible, by varying the pumping flow rate based on the hydraulic parameters, to vary the pressures and flow velocities of the bath crossing the material treated, and therefore also the impregnating and dyeing action of the bath in relation to the material treated. This makes it possible to treat various quantities of cloth with the ideal bathing volume, independently of the kier's nominal capacity; this determines a savings of water, chemicals and energy higher than that obtainable by known units. The characteristics of the invention will become more evident from the following description and drawing, referred to an example of embodiment supplied for exemplifying but non-limiting purposes, where Figure 1 is a simplified view of a dyeing unit on a cloth beam according to this invention, where the kier is of a horizontal or torpedo-like type. However, the invention is also applicable to treating units comprising other types of kiers of a kind equipped with or without a rotating cloth beam or operating under partially or totally filled conditions. For these reasons, the enclosed figure illustrates the kier in a simplified manner avoiding the reproduction of its structural details, which may threfore vary depending on the type of kier employed. With reference to the mentioned figure, the unit for treating textile material, especially for dyeing on a cloth beam according to the invention is indicated as a whole by the number 1 and essentially comprises a kier 2 and a lateral reservoir 3. In alternative embodiments, this reservoir 3 may be placed above or below the kier 2 or in some other remote position, or may even, for certain very special treatments, be totally missing. The kier 2 is preferably of a horizontal type and preferably also houses a fixed or rotating cloth beam 4 capable of being loaded with the material to be dyed 5. The kier 2 and reservoir 3 are interconnected by a first branch 6 and a second branch 7 of a hydraulic line, equipped with a first pump 8 and a second pump 9, respectively, for circulating the dyeing bath 10. The first pump 8 is of a variable flow type, while its suction 11 is connected with the bottom 12 of the lateral reservoir 3 and its discharge 13 is connected with the inside of the cloth beam 4. The second pump 9 is of a variable flow type, while its suction 14 is connected with the bottom 15 of the kier 2, and its discharge 16 with the inside of the lateral reservoir 3. The first branch 6 of the hydraulic line is equipped with a flow controlling device 17, while the kier 2 is fitted with a level controlling device 18 for the dyeing batch 10. The flow rates of the pumps 8, 9 are determined by an electronic control unit 19 which processes, thanks to an electronic computer application program, the data originating from the devices 17 and 18, in ways capable of guaranteeing that the flow rate of the first pump 8 is adequate to guarantee a chemically correct dyeing process, and that the flow rate of the second pump 9 is high enough to ensure that the free liquid level of the bath cannot contact the material 5 under treatment, or that the mentioned material 5 will never dip into the dyeing batch 10 collecting on the bottom of the kier 2. The given description clarifies the characteristics and the resulting advantages of the unit for treating textile material, especially for dyeing, preferably on a cloth beam. It is in particular worth noting that it is possible to treat various quantities of cloth with a bathing volume which is of an ideal size and simultaneously independent of the nominal volume of the kier 2. This means that the savings of water, chemicals and energy is greater than that obtained by traditional units. Finally, it is at any rate clear that numerous variants may be applied to the unit for treating textile material as an object of this invention, without thereby abandoning the innovative principles inherent in the inventive idea. It is likewise clear that in the practical implementation of the invention the materials, shapes, forms and dimensions of the illustrated details may be of any type depending on the requirements, and that the same may be substituted with others of a technically equivalent type. For example, the dyeing unit 1 may also comprise a device 20 or heating valve 20 for the dyeing bath 10, preferably connected to a true heating unit 21, mounted inside the reservoir 3 and governed by the electronic heating control center 19. In this manner, even the temperature of the dyeing bath 10 may be automatically controlled, so as to optimize the use of the bath and to increase its effectiveness . Again for the purpose of optimizing the use of the bath, the first branch 6 of the hydraulic line may comprise a further derivation 22 ending inside the kier 2, outside the cloth beam 4, through a row of nozzles 23 directed at least against the cloth beam 4, so as to drench the material 5 in a dyeing phase. List of Reference Numbers 1. Dyeing unit 2. Kier 3. Lateral reservoir 4. Cloth beam 5. Material to be dyed 6. First branch of the hydraulic line 7. Second branch of the hydraulic line 8. First pump 9. Second pump 10. Dyeing bath 11. First pump suction 12. Bottom of lateral reservoir 13. First pump discharge 14. Second pump discharge 15. Bottom of the kier 16. Second pump discharge 17. Flow controlling device 18. Bath level controlling device 19. Electrical control center 20. Heating device or valve 21. Heating unit 22. Derivation of the first branch of the hydraulic line 23. Nozzles

Claims: CLAIMS 1. A unit (1) for treating textile material, especially for dyeing, comprising at least one pump (8, 9) for circulating a dyeing batch (10) and a kier (2), equipped with at least one level controlling device (18) for said dyeing bath (10) and immersed in the same, and some means (4) capable of being loaded with the material (5) to be dyed, characterized in that said pump (8, 9) works at a variable flow rate, where the flow rate is governed by an electronic unit (19) based on a computer application program and by the inlet data originating from at least said level controlling device (18) , so as to guarantee a chemically correct dyeing process, while holding the dyeing bath level (10) inside said kier (2) at a point below the established threshold. 2. A unit (1) according to claim 1, characterized in that said kier (2) is interconnected, by at least one branch (6, 7) of a hydraulic line, with a reservoir (3) containing at least a portion of said dyeing bath (10), where said kier (2) and said reservoir (3) are each fitted with at least one pump (8, 9) for circulating said dyeing bath (10) . 3. A unit (1) according to claim 2, characterized in that said kier (2) and said reservoir (3) are equipped with a first pump (8) and a second pump (9) respectively, where said first pump (8) is of a variable flow rate type, fitted with a suction duct (11) connected to the bottom surface (12) of said reservoir (3) and a discharge duct (13) connected to the inside of said means (4) loaded with material to be dyed, where the said second pump (9) is of a variable flow rate type, fitted with a suction duct (14) connected to the bottom surface (15) of said kier (2) and a discharge duct (16) connected with the inside of said reservoir (3) . 4. A unit (1) according to claim 3, characterized in that at least said branch (6, 7) is equipped with at least one flow controlling device (17) capable of guaranteeing that said second pump (9) exhibits a flow rate such as to prevent said material to be dyed (6) from contacting said dyeing bath (10) during the treatment, or said material (5) from contacting said dyeing bath (5) collected on said bottom surface (15) of said kier (2) . 5. A unit (1) according to claim 2, characterized in that said reservoir (3) is installed above or below or in a lateral position with respect to said kier (2) . 6. A unit (1) according to claim 1, characterized in that said kier (2) is of a horizontal type comprising a cloth beam (4) as a means capable of being loaded with the material to be dyed (5) . 7. A unit (1) according to claim 2, characterized in that it comprises a heating device (20) for said dyeing bath (10) , equipped with a heating unit (21) placed inside said reservoir (3) and controlled by said electronic control center (19) . 8. A unit (1) according to claim 2 and 6, characterized in that at least said branch (6, 7) of the hydraulic line comprises a derivation (22) ending inside said kier (2) outside of said cloth beam (4) , by a row of nozzles (23) directed against at least said cloth beam (4) so as to drench said material to be dyed (5) during a dyeing phase. 9. A unit (1) according to claim 1, characterized in that said kier (2) is of a horizontal or vertical type. 10. A unit (1) according to claim 6, characterized in that said cloth beam (4) is of a static or rotating type.

Inventors: CORBELLINI LUCIO, CORBELLINI, LUCIO
Applicants: CORBELLINI LUCIO, CORBELLINI, LUCIO
Application year: 1999
Main classification: D06B5
IPC codes: D06B5