DE3605123A1 - Textile-treatment apparatus with fluid circulation - Google Patents

Abstract

A textile-treatment apparatus with fluid circulation comprises a textile stagnation tank (1) with treatment fluid stored therein, and a conveying tube (7) under the tank (1). The tank (1) and the conveying tube (7) are connected to one another at both ends, in order to provide an endless textile-transfer channel. An inclined portion (1a) for raising the textile web (10) is provided on one end portion of the tank (1), and injection units (5, 6) are arranged in the region of the inclined portion (1a) and on one end portion of the conveying tube (7) which is connected to the inclined portion (1a). The treatment fluid in the stagnation tank (1) is supplied by the injection units (5, 6) by means of a pump (2). The cloth web (10), which is to be treated in the apparatus, is introduced in endless form into the transfer channel and circulates through the latter after fluid is injected through the injection units (5, 6), with the result that treatment can take place. <IMAGE>

Description

The invention relates to a textile treatment

device with fluid circulation.

Figure 11 shows an essential part of a conventional dyeing machine with reel drive. The machine has a stagnation tank 1 ', a textile conveyor pipe 2 ', an injection unit 3' for the treatment liquid and a textile drive reel R on. A textile tape T is moved in the direction of the arrow for the purpose of coloring. In the known device, the injection force generated by the treatment liquid injection device is generated, and the mechanical torque of the reel is used to treat the Let the textile tape run around. (This is referred to as "substance" in the following.) These forces must be in a suitable manner according to the nature of the to be treated Fabric can be adjusted. If the setting is not done correctly, it results a remarkable difference between the speed of movement of the fabric and the peripheral speed of the rotating reel, especially in the area of this Drive reel, and this results in slippage between the fabric and the reel roller. Also, the treatment liquid that is contained in the fabric is used as a lubricant used, squeezed on the reel roller and the surface of the fabric can be damaged will. Furthermore, if a pump for conveying the treatment liquid from any Basically, it fails or the setting is made extremely incorrectly Difficulties in moving the fabric arise and the material could wrap around the reel. In this case the device would have to be as a whole be stopped.

In addition, with conventional devices of this type, then if at high speed of, for example, 400 to 500 m / min with such extremely low liquid ratio like 1: 5 to 1: 8 is working the pump Swing back and forth, or cavitation can result, so that the substance cannot be moved in a stable manner; and then it becomes difficult and arduous to regulate the flow of the treatment liquid. Next becomes unnecessarily electrical Energy consumed when treating certain tissues and a certain amount of fabric will. Also, it is difficult to control the fabric feed with the liquid recirculation at an initial stage of the high speed operation of the machine. Adjustment work for compensation takes a long time.

The resulting product can also differ in quality depending on the operator's experience.

The present invention is based on the object of creating a textile treatment device with liquid circulation, by means of which the described disadvantages of known machines are prevented and the circulation of the textiles takes place in a stable manner.

The invention is based on a textile treatment device Liquid circulation with a delivery pipe through which the textiles to be treated be moved in a straight line, with a stagnation tank through which the textiles pass be moved in a serpentine line, with conveyor pipe and stagnation pressure at both Ends are connected to one another in such a way that a closed textile transmission channel is formed, in which the textiles are arranged in endless form and circulate, with an injection unit at the upstream end of the delivery pipe and with one Pump, which after a treatment liquid under pressure from the stagnation tank the injection unit promotes in such a way that the textiles in the textile transfer channel circulate.

The problem is solved by the fact that åm downstream Section of the stagnation tank an inclined section is provided, which lifts the textiles and rises above the level of the treatment liquid extends in the tank that a textile inlet / outlet opening on the outside of the stagnation tank at the upper end of the inclined section it is provided that a further injection unit is arranged on the inclined portion, which is fed with treatment liquid is, which is pressurized by the pump, and that the delivery pipe on a opposite the stagnation tank runs lower-lying point.

Brief Description of the Drawings Figure 1 is a sectional view of a Fluid circulation textile treatment apparatus according to the present invention.

FIG. 2 shows the circuit A in FIG. 1 on a larger scale enclosed part.

Figure 3 is a perspective view of a guide tube which is installed in the device part shown in FIG.

FIG. 4 shows a sectional view of a further embodiment of the treatment device according to the invention.

FIGS. 5A, 5B and 5C are sectional views along the lines VA-VA, VB-VB and VC-VC according to Figure 4.

FIGS. 6A and 6B are sectional views of a modified embodiment according to Figure 4.

FIG. 7 shows a sectional view of a further invention according to the embodiment Contraption.

Figures 8, 9 and 10 representations showing the different modes of operation the embodiment according to FIG. 7 can be seen.

Figure 11 is a sectional view of the essential part of a conventional one known device.

Description of the Preferred Embodiments Embodiments of the invention described with reference to the drawing.

Figure 1 is a schematic sectional view of a fabric treatment apparatus with fluid circulation according to the present invention. The device has a cloth stagnation tank 1.

The tank 1 has an inclined section la at its outlet, to raise the panel. He is with treatment liquid up to a level 4 filled. The tank 1 exits with a slight incline towards the downstream End down.

Injectors 5 and 6 for the treatment liquid, the each comprising a venturi injector are at the outlet on the downstream Side of the tank 1 or at an inlet section or at the upstream end of one Conveying pipe 7 is arranged, this pipe running essentially under the tank 1. At the upstream end portion of the stagnation tank 1, housings 8 and 9 are provided, which are each equipped with porous plates, so that part of the treatment liquid this can flow downwards. The fabric 10 to be treated is in continuous form attached in the device.

A pump 2 is connected to a suction pipe 10 to which suction lines 11, 28 and 30 for the treatment liquid are connected, which in turn are connected to a front connection 40 and the middle housing 9 and the rear housing 8, respectively. Flow Control valves 29 and 31 are switched on in suction lines 28 and 30, respectively, to control the liquid rates in suction lines 28 and 30. An outlet control valve 15 is arranged in an outlet line 16 of the pump 2. The treatment liquid passing through the outlet flow control valve 15 further flows through a filter 17 and is heated to a predetermined temperature by a heat exchanger 18. An outlet pipe 19 of the heat exchanger 18 branches into two pipes 19a and 19b which are connected to the injection units 5 and 6, respectively. Flow control valves 20 and 21 are located in branch lines 19a and 1Fb, respectively. This adjusts the injection fluid pressure.

The reference numerals 22 and 26 denote liquid supply and Discharge valves.

FIG. 2 shows the part enclosed by the circle A according to FIG on a larger scale. A stock tube 35 is inserted into a stock inlet / outlet 37, which is normally closed by a cover 36. When the fabric is in the Device, for example a dyeing machine, is used, then the lid 36 removed from stock inlet / outlet 37 to dismantle stock guide tube 35. Then the treatment liquid is fed under pressure to the injection unit 6, so that an end section of the web of material enters the material conveying pipe 7. If the inserted end portion of the web returned into the inlet / outlet, then the inserted end is connected to the trailing end of the length of fabric to make the Panel of fabric available as an endless loop. After that, will the guide tube 35 built into the inlet / outlet again, -to the substance transfer channel to ver-'vo.flestand-igen and the cover is attached to the inlet / outlet to this close. Then normal operation of the device is started.

Figure 3 is a perspective view of the guide tube 35. The Guide tube 35 has a substance guide groove 38 which forms part of the substance transfer channel forms.

From the description of the embodiment it follows that in the device according to the invention, the substance to be treated by the action of inclined portion that lifts the fabric, and also through the two injection units for the treatment liquid, without any Reel or a winch would be required. It is also of practical benefit that the insertion of the panel into the tank and the removal of the panel from it easy by assembling or disassembling the guide tube above the liquid level the treatment liquid can be carried out. The special -technical Features, for example materials, size of the components of the device according to the invention, can be designed similarly to a conventional device and accordingly the respective conditions. Accordingly, is a detailed description these parts are provided.

Further exemplary embodiments are referred to below on Figure 4 to 10 described.

In these figures, the same reference numerals are used as in the arrangement used according to Figure 1 to identify the same components. Therefore, on a repeated description of these parts can be dispensed with.

The embodiment of Figure 4 is suitably stable treatment the fabric web 10 perform, even if the treatment liquid is high Has a flow rate and a fast operation, especially with a small one Liquid ratio is desired. In this embodiment there is a flow channel 42 provided to a bottom part of the porous middle housing 9 and the front Connection 40 of the stagnation tank 1 and the suction pipes 30 and 11 of the pump 2 are towards the bottom of the rear housing 8 and towards the opened by their terminal 40.

The fabric web 10 is through the action of the injection units 5 and 6 moves. The fabric web 10, which arrives from the fabric conveyor pipe 7, is according to Art a serpentine arranged in the rear housing 8 and into the stagnation tank 1 introduced to circulate in the transmission channel. The treatment liquid, which exits the tube 7 together with the web 10 abs is partially through the many openings in the rear housing 8 and in the middle housing 9 are separated. The treatment liquid, that was separated in this way, passes through an opening 8a in the rear housing 8 and an opening 9a in the central housing 9. The treatment liquid thus separated then flows through the channel 42 the front connection -40 to through the openings of the connection 40 after the pump 2 to be returned. The treatment liquid is thus in the stagnation tank l, when moving from the rear of the tank to the front port 40 flows, not deflected by any obstacles in the fabric web 10, but flows stably. Therefore, the liquid levels in the front and rear sections become of the tank 1 is held stable, so that the treatment liquid stored in the port 40 not affected by the substance, the temperature of the treatment liquid and additives will. A sufficient proportion of the treatment liquid can be held in the connection 40 be, s - o that the web of material 10 can float in the tank 1 without the suction vacuum Impact pump 2.

The normally constant level of the treatment liquid in the Front connection 40 makes it possible to have a constant tension on the cloth web 10 exert in the inclined portion 1a, thereby increasing the rate of recirculation the fabric is stabilized.

As described above in connection with the embodiment of Figure 1, becomes the treatment liquid from the tank to the pump 2 over circulated the suction pipes, which are connected directly to the suction pipe of pump 2 are. As described in the embodiment of Figure 1, the treatment liquid Forcibly guided from the tank to the pump 2 through the suction pipes, which are direct are connected to the suction side of the pump 2. There is therefore the possibility of that the suction vacuum of the pump causes the treatment liquid within the Tanks is sucked in. In this case, the fabric web 10 would also be together with the Treatment liquid sucked in.

In the exemplary embodiment according to FIG. 4, the suction pipe is 28 for the middle housing 9 not available in order to eliminate this possibility. Additionally the diameter of the suction pipe 31 for the rear housing 8 can be reduced to one Third of the diameter of the conventional pipeline can be reduced. At this Arrangement, the control valve 31 in the intake pipe 30 is also designed so that that it is a little open to the temperature distribution over the treatment liquid in the front and rear portions of the stagnation tank 1 to improve and so reduce the adverse effect of the pump suction vacuum.

The arrangement in which the treatment liquid in the rear Part of the stagnation tank 1 is recirculated through the two suction lines 28 and 30 is, as shown in Figure 1, is accordingly in the arrangement modified, in which the treatment liquid directly after the front drain from the rear Part of the tank 40 is transferred and then recirculated. Hence, in this latter case Arrangement of the fabric web 10 has almost no adverse effect of the suction vacuum exposed to the pump.

In the last-mentioned embodiment according to FIG.

4 is the channel 42 at a lower inner portion of the stagnation tank 1 arranged. However, this arrangement of the channel 42 is not mandatory. So can, as shown at 42 'in Figures 6A and 6B, the flow channel also on the lower Outside of the stagnation tank 1 are arranged.

In order to check the advantages of the arrangement according to FIG carried out the following experiments.

It became an inferior fabric that was breathable and permeable the pump suction could be impaired, for example 100% taffeta Polyester processed in the device. The total amount of fabric treated was increased to 1.5 times b-is-increased to 2 times and the amount of treatment liquid has been reduced by 30 to 40%. The rate of recirculation of the fabric was increased to 1.5 times to 2 times and the injection flow rate (pump flow rate) was 2 times or more compared with treatment in a conventional one Device increased where the web of fabric could be treated without damage.

Thus the operational advantages of the device were very remarkable.

Figure 7 shows a further embodiment. The embodiment according to Figure 7 differs from the embodiment of Figure 1 in that that a secondary pump 3 is provided in addition to the main pump 2, and that the recirculation pipe line system for the treatment liquid is designed so that either one of the pumps can work alone or both pumps at the same time. A suction line 32 for the secondary pump 3 is arranged on the suction pipe 13. The suction pipes 28 and 30 from the housing 9 and 8 go over into a suction ring line 32. An outlet pipe 34 of the The auxiliary pump is connected to a heat exchanger 18 via a flow rate control valve 24 and also connected to the suction pipe 13 via a pipe 41 and a flow control valve 23 connected so that a connection with the suction side of the main pump 2 is established is when the control valve 24 is closed when the pumps are operated in series. In addition, a flow retel valve 12 is in the suction line 13 between the use binding sections with the tubes 11 and 41 turned on. Another flow control valve 25 and an additional outlet valve 27 are in the suction line 13 between the Supply valve 22 and the suction line 32 are arranged.

FIGS. 8, 9 and 10 show the modes of operation of the device according to FIG Figure 7, which are suitable for too treating panels that be light, medium or heavy. In In these figures, the solid lines denote effective flow channels of the treatment liquid.

FIG. 8 shows the operating mode in which the main pump 2 is operated alone will. This mode of operation is essentially the same as that shown in FIG. In the mode of operation according to FIG. 8, both flow control valves 23 and 24 are on the outlet side of the sub pump 3 closed while the flow control valves 12, 25, 29 and 31 on the suction side of the main pump 2 are opened to a suitable extent are. This procedure is effective for coloring a sheet of fabric with little Weight, e.g.

Taffeta and silk crepe (Table 1). Figure 9 shows the mode of operation which is suitable for fabrics that have a low or medium weight, and here the main pump 2 is driven together with the sub pump 3 by motors M1 and M2 are driven, each of which has an output power of 5.5 kW. In this In this case, the flow control valves 12 and 24 are closed, while the flow control valves 25, 29 and '31 are kept open so that the main pump 2 and the sub pump 3 can work in series to circulate the treatment liquid.

Figure 10 shows the parallel operation which is suitable for substances that medium or heavy weight, the main pump 2 and the sub pump 3 operated by the motors M1 and M2 with 5.5 kW output power each will. Here, the flow control valves 23 and 25 are closed, while the Flow control valves 12, 29, 31 and 24 are kept open so that the main pump 2 and the auxiliary pump 3 work in parallel to the treatment liquid to overturn (see the data for normal crepe and cashmere doeskin in the table 1).

The following table 1 shows experimental results for comparison the device of Figure 7 with the conventional device, in both Cases typical panels of polyester were dyed.

Table 1 BACKGROUND ART INVENTION WEIGHT TO BE COLORED OF THE TOTAL MAIN SECONDARY VOLUME OF THE FABRIC FABRIC PUMP VOLUME FABRIC FABRIC WEIGHT PUMP PUMP OF SUPPLY SUPPLY LIQUID LIQUID LIQUID KEIT SPEED DIGNESS DIGNESS g / m roll kg kW kW 1 m / min m / min kW 1 1. Taffeta 56 16 44.8 5.5 - 700 380 250 15 800 2. Crepe 140 12 84 5.5 5.5 700 450 250 15 700 3. silk crepe 86 20 86 5.5 - 600 300 150 15 700 4. Cashmere Doeskin 343 6 112.2 5.5 5.5 1,000 650 400 15 1,000 The silk crepe according to No. 3 in Table 1 is a product reduced by 30% in weight and it is prone to "slippage" (this is damage to the fabric as a result of the dyeing process). Therefore, using a conventional apparatus, it was impossible to process the silk crepe at a high speed exceeding 150 m / min and to keep the quality at a satisfactory standard. With the apparatus of the present invention, however, it is possible to process silk crepe itself at high speeds, at speeds twice or more than conventional apparatus, while maintaining a satisfactory quality of the fabric. As can be seen from the results in Table 1, in the apparatus of the present invention, the dyeing time can be reduced by 20 to 40% because the cloth feeding speed has been increased considerably.

Since the exemplary embodiment according to FIG. 7 has the described arrangement it is possible to use the device even with an extremely low liquid ratio nis and a high stock feed speed for every type of fabric to operate a fiber product treated with devices of this type can. Even if one of the pumps goes into cavitation if both Pumps work at the same time, then the other pump still works in normal Way. In this case, the flow rate would be up to a certain point Degrees diminished, but the panel would continue in normally circulate. A suction effect that creates a desired arrangement of the fabric web in the fabric stagnation tank controls can also be improved.

In the exemplary embodiment according to FIG. 7, flow control valves can also be used are provided on the outlet sides of the pumps, the tendency of cavitation in both Pumps are suppressed, whereby the flow rate is further stabilized and the Material feed speed is evened out. When the flow rate or the feed speed is stabilized, the setting can the treatment by the bypass control valves can be simplified or at all fall away.

In the case of the arrangement according to FIG. 7, it is also possible to use the method to be carried out more economically and to avoid unnecessary energy consumption, using only one of the pumps, handling fabrics of any weight can be. Because a so-called "buffer start" is achieved by using two pumps there is an initial stabilization process for the fabric. aside from that it is possible to automatically control the flow control valves in a known manner.

In addition, it is sufficient for the operation of the device, the flow control valves 20 and 21 for the respective fabric of the fiber product to adjust. As the matter circulates, it becomes in everyone Section fully covered with treatment liquid and there is no slip between the material and mechanical parts in contact with the material. Difficult too Fiber products to be treated can be transported at stable speeds without damage be circulated and it becomes an effective and satisfactory dyeing process guaranteed for any type of fabric.

The invention has been described above with reference to specific exemplary embodiments described. However, the invention is not limited to these exemplary embodiments and modifications and changes can be made within the scope of the invention will.

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Claims (5)

Textile treatment device with liquid circulation Patent claims: 1. Textile treatment device with liquid circulation, with a conveying pipe, through which the textiles to be treated are moved in a straight line, with a stagnation tank, through which the textiles are moved along a serpentine line, with a conveyor tube and stagnation tank are connected to each other at both ends so that a closed Textile transmission channel is formed in which the textiles are arranged in an endless form are and circulate, with an injection unit at the upstream end of the delivery pipe and with a pump which draws a treatment liquid under pressure from the stagnation tank after the injection unit of the type that promotes the textiles in the textile transfer channel circulating, characterized in that on the downstream portion of the stagnation tank (1) an inclined section (la) is provided, which the textiles (10) lifts up and moves upwards over den = level (4) of the treatment liquid in the tank (1) that a textile inlet / outlet opening (37) extends on the outside of the stagnation tank (1) is provided at the upper end of the inclined portion (la) is that a further injection unit (5) is arranged on the inclined portion (la) is, which is fed with treatment liquid, which from the pump (2) below Pressure is set, and that the delivery pipe (7) at one opposite the stagnation tank (1) runs deeper. 2. Apparatus according to claim 1, characterized in that a guide tube (.35), which forms part of the textile transfer channel, detachable in the inlet / outlet opening (37) of the stagnation tank (1) is installed so that the textile transmission channel can be opened to make the inlet / outlet (37) accessible after the Guide tube (35) is removed, the inlet / outlet (37) being closed when the guide tube (35) is put back on. 3-. Device according to claims 1 or 2, characterized in that that this pump arrangement has at least two pumps (2, 3), and recirculation pipelines (11-13, 15, 16, 22-34) .are provided, which can be switched so that the pumps (2, 3) optionally in single pump operation, in series pump operation or can work in parallel pump operation. 4. Apparatus according to claim 1, characterized in that a flow channel (42) is provided to directly form a lower porous wall on the upstream side housing (8, 9) with a downstream side connection (40) of the stagnation tank (1) to connect, and that side suction pipes (11, 30) of the pump (2) to a section of the tank (1) under the upstream side casing (8,9) or the downstream one Side connection (40) of the tank (1) are connected. 5. Apparatus according to claim 4, characterized in that the stagnation tank (1) is arranged slightly inclined towards the downstream end.