CN218372771U - Spray set, popped case and washing equipment - Google Patents

Abstract

The present disclosure relates to a spray device, characterized in that the spray device is arranged in a bulking box of a washing apparatus for textile printing, at least one drawing roll is arranged in the bulking box, the drawing roll is used for drawing textiles, the spray device is provided with a spray mechanism, the spray mechanism is configured for spraying liquid to a preset textile separation area of a last drawing roll in a textile traveling direction in the at least one drawing roll, so that the tension of the textiles is increased through the gravity and the surface tension of the liquid, and the textiles can be separated from the last drawing roll by overcoming the attaching force between the textiles and the last drawing roll. Thus, the fabric can be separated from the pulling roll by increasing the tension of the fabric using the gravity and the surface tension of the liquid sprayed to a predetermined fabric separating region by the spraying mechanism of the spraying device. The disclosure also relates to a puffing box and a washing device.

Description

Spray set, popped case and washing equipment

Technical Field

The disclosure relates to the field of fabric printing and dyeing equipment, in particular to a spraying device, a puffing box comprising the spraying device and washing equipment comprising the puffing box.

Background

Along with the continuous progress and development of society, the quality of the public life is improved, more and more people select the nylon fabric of the light and warm down jacket, at present, 20D ultrathin nylon is used as the fabric of the down jacket, and the quality of the whole piece of clothes with the filler is only 90-120 g. Is light and convenient to wear and warm, and is popular with consumers. Such lighter and thinner fabrics have become the mainstream trend in the development of down jackets.

Nylon belongs to synthetic fibers, and due to good hydrophilicity and elasticity, especially ultrathin nylon fabrics have been used as the mainstream cloth of down jacket fabrics. At present, the nylon woven ultrathin fabric is usually washed by an open-width washing machine after being printed and dyed. However, in a specific production application, in a bulking box of a washing machine, the fabric is easy to be attached to a drawing roller of conveying equipment due to the light gram weight of the 20D nylon fabric in the drawing process of the drawing roller. Especially at high speeds, the fabric may not be timely stripped from the pull roll and become wound up on the pull roll, thereby causing the fabric to run poorly. In particular, in the bulkers known in the prior art, the fabric tends to stick to the surface of the drawing roller after coming out of the upper drawing roller, thus resulting in a dipping roller, on which the fabric is wound continuously, so that it cannot fall onto the subsequent conveyor belt. Therefore, the fabric cannot be normally and stably washed in the open-width washing machine, the machine is frequently stopped, and the production efficiency is seriously restricted. In other words, the ultra-thin fabric is very easy to stick to the surface of the drawing roll after coming out from the upper drawing roll in the bulking box, and the problem of winding failure is caused.

SUMMERY OF THE UTILITY MODEL

The object of the present disclosure is to propose a spraying device and a puffing box comprising such a spraying device, which are able to overcome at least one of the drawbacks of the prior art.

A first aspect of the present disclosure relates to a spray device, characterized in that the spray device is disposed in a bulking tank of a washing apparatus for textile printing, at least one drawing roll for drawing a textile is disposed in the bulking tank, and the spray device has a spray mechanism configured to spray a liquid to a predetermined textile separation region of a last drawing roll of the at least one drawing roll in a traveling direction of the textile, thereby increasing a tension of the textile by a gravity and a surface tension of the liquid so that the textile can be separated from the last drawing roll against a bonding force between the textile and the last drawing roll.

In the present disclosure, in a washing operation after printing and dyeing of fabric, by additionally providing the spray device according to the present disclosure in the expansion tank, the tension of the fabric can be increased by using the gravity and the surface tension of the liquid sprayed to a predetermined fabric separating region by the spray mechanism of the spray device to overcome the attaching force between the fabric and the pulling roll, thereby forming an effective traction force applied to the fabric and thus separating the fabric from the pulling roll. Therefore, the technical problem that the fabric is stained with the roller or wound around the roller is effectively solved.

In some embodiments, the spray mechanism may be disposed laterally over the last pull roll.

In some embodiments, the spray mechanism may be configured as a spray bar on which a liquid ejection portion for ejecting liquid toward the last drawing roll is provided.

In some embodiments, the liquid ejection portion may be configured as an elongated spray opening.

In some embodiments, the liquid ejection portion may be configured as a plurality of spray ports spaced apart from each other.

In some embodiments, the plurality of spray openings may be spaced apart from each other by a distance of 2cm to 50cm, preferably by a distance of 5cm to 30cm.

In some embodiments, at least one of the plurality of spray openings may be configured as a circular hole, and the aperture of the circular hole is between 0.1mm and 5mm, preferably between 0.5mm and 2mm, particularly preferably 1mm.

In some embodiments, at least one of the plurality of spray openings may be configured to be elongated.

In some embodiments, the liquid ejection portion may have at least one of the following operating parameters: the angle between the liquid jet ejected from the liquid ejecting part and the fabric is 15-45 degrees, preferably 25-30 degrees; the distance between the liquid ejecting part and the surface of the last drawing roll is 2cm-75cm, preferably 5cm-50cm.

In some embodiments, the liquid squirt section may extend in the cross direction of the bulking tank for a length greater than or equal to the width of the fabric.

In some embodiments, the spray mechanism may have at least one of the following operating parameters: the spraying pressure of the liquid is 1kg/cm ² -5kg/cm ² Preferably 2kg/cm ² -3kg/cm ² (ii) a The spraying liquid amount of the spraying device is 5m ³ /h-50m ³ H, preferably 10m ³ /h-30m ³ /h。

In some embodiments, the spray mechanism can be fixedly disposed on the wall of the shell of the expansion tank.

In some embodiments, the spray device may further have a liquid receiving mechanism configured to receive liquid falling from the last pull roll, the liquid receiving mechanism having an outlet for discharging liquid.

In some embodiments, the liquid-receiving mechanism may be configured as a separate liquid-receiving pan disposed below the last pull roll; and/or the bottom of the expansion tank serves as a liquid receiving mechanism.

In some embodiments, the spray device may further have a liquid tank configured to store a liquid, the liquid tank having a liquid inlet in fluid communication with the outlet of the liquid receiving mechanism and a liquid outlet in fluid communication with the spray mechanism.

In some embodiments, the spray device may further have a liquid circulation pump arranged between the liquid outlet of the liquid tank and the spray mechanism, the liquid circulation pump being configured to apply a pumping pressure to the liquid flowing to the spray mechanism.

In some embodiments, the liquid tank may have a liquid injection port configured to inject liquid into the liquid tank.

In some embodiments, the fabric may be a nylon fabric, particularly an ultra-thin nylon fabric.

A second aspect of the disclosure relates to a puffing box, characterized in that it comprises a spraying device according to the disclosure.

A third aspect of the present disclosure relates to a water washing apparatus for textile printing and dyeing, characterized in that it comprises a puffer tank according to the present disclosure.

The above-mentioned features and the features to be mentioned below as well as the features shown in the drawings can be combined with one another as desired, provided that the individual features to be combined are not mutually inconsistent. All technically feasible combinations of features are the technical contents contained in the description.

Drawings

The disclosure is further explained below with the aid of exemplary embodiments with reference to the schematic drawings.

Wherein:

FIG. 1 is a schematic diagram of a construction of an expansion tank for a water wash apparatus according to an exemplary embodiment of the present disclosure;

FIG. 2 is a schematic structural view of a spray device according to an exemplary embodiment of the present disclosure.

Detailed Description

Fig. 1 is a schematic diagram of a construction of an expansion tank 100 for a water washing apparatus according to an exemplary embodiment of the present disclosure. As shown in fig. 1, the bulking box 100 may include a manual cloth tightener 1, a first traction mechanism 2, a beater 3, a conveyor belt 4, a second traction mechanism 5, a interlock expander roll 6, a third traction mechanism 7, a pressure tension roll 8, and a centering roll 9, which are sequentially arranged in the traveling direction of the fabric 20. The web 20, after being centered by the centering roller 9, can be deflected by a turning roller and then leave the bulking box 100. A steam seal mechanism 12 may be provided upstream of the manual cloth tensioner 1. On the bottom of the expansion tank 100 there can also be provided a saturated steam generator 10 for generating steam, which saturated steam generator 10 has substantially an extension corresponding to the extension of the conveyor belt 4. Above the conveyor belt 4 there may be provided a heating coil 11. A water seal 13 can be arranged below the pressure tension roller 8, wherein the water seal 13 is arranged adjacent below the pressure tension roller 8. In the present disclosure, the fabric 20 may be configured as a nylon fabric, particularly an ultra-thin nylon fabric. Of course, other types of fabrics are also contemplated. The first pulling mechanism 2 may comprise at least one pulling roll. In the embodiment shown in fig. 1, the first pulling mechanism 2 comprises three pulling rolls. In other embodiments, the first pulling means 2 may also comprise only one pulling roll. The second and third pulling means 7 can also be configured as pulling rolls.

In order to be able to effectively separate the fabric 20 from the drawing rolls 21, instead of the fabric 20 being dipped or entangled at the drawing rolls 21 of the first drawing mechanism 2 as in the prior art, a spraying mechanism 210 of a spraying device 200 may be arranged above the side of the last drawing roll 21 in the traveling direction of the fabric 20 among the drawing rolls of the first drawing mechanism 2. The spraying mechanism 210 may spray liquid toward a predetermined fabric separating region of the last drawing roll 21 to increase the tension of the fabric 20 by the gravity and the surface tension of the liquid so that the fabric 20 is separated from the last drawing roll 21. After the fabric 20 is sprayed with the liquid by the spraying mechanism 210, a downward tension is rapidly formed by the surface tension of the liquid and the gravity, so that the fabric 20 is separated from the last drawing roll 21, and the fabric 20 is smoothly dropped on the conveyor belt 4 at the lower part of the bulking box 100 under the tension, thereby the fabric 20 can smoothly enter a subsequent washing unit which is not shown.

In this embodiment, the spray mechanism 210 may be configured as a spray bar. The cross section of the spray rod can be round, oval, square, rectangular and the like. When the spray bar is circular in cross-sectional shape, the spray bar may also be referred to as a shower. The spray bar may extend in the transverse direction of the puffing chamber 100. In other words, the spray bar may extend perpendicular to the direction of travel of the fabric 20 when viewed from above. In addition, the effective active length of the spray bar is preferably greater than or equal to the width of the fabric 20. Thus, the liquid sprayed from the spray bar can be sprayed onto substantially the entire fabric 20. The spray bar may be fixedly disposed on the wall of the shell of the expansion tank 100. The spray bar may be secured at both ends to the walls of the puffing chamber 100 by material or force locking. For example, the spray bar can be welded at both ends to the walls of the shell of the expansion tank 100. Also, for example, the spray bar may be secured at both ends to the walls of the expansion tank 100 by a threaded connection. In this embodiment, the spray bar is disposed above the side of the last drawing roll 21, in which case the spray bar can spray liquid obliquely downward toward a predetermined fabric-separating region. In other embodiments, spray bars may also be arranged laterally below the last drawing roll 21, in which case the spray bars may spray liquid obliquely upwards facing the intended fabric separation zone.

It is noted here that in the present disclosure, for the case where the first traction means 2 comprises only one traction roller 21, the "last traction roller 21" is the one traction roller 21.

The structure of the shower device 200 will be further described below with the aid of fig. 2. Fig. 2 is a schematic structural diagram of a spray device 200 according to an exemplary embodiment of the present disclosure.

In the embodiment shown in fig. 2, the first pulling means 2 comprises only one pulling roll 21. The spray mechanism 210 is disposed above the side of the pull roll 21. In other embodiments, the spray mechanism 210 may be disposed at other locations, as described above. For example, the spray mechanism 210 may be disposed below the side of the pull roll 21. The spray mechanism 210 can be fixedly disposed on a housing wall, such as a housing sidewall, of the puffing chamber 100 as described above. The spray mechanism 210 may be configured as a spray bar. The shower rod may be provided with a liquid ejecting portion 211 for ejecting liquid toward the pulling roller 21. The liquid ejection portion 211 may spray liquid toward a predetermined fabric separation region. Thus, good separation of the web 20 from the pull roll 21 at the predetermined web separation zone can be achieved by the spray mechanism 210 of the present disclosure. The extension length of the coverage of the liquid ejecting section 211 in the transverse direction of the puffing chamber 100 may be greater than or equal to the width of the web 20, that is, the extension length of the effective action area of the liquid ejected by the liquid ejecting section 211 in the transverse direction of the puffing chamber 100 is greater than or equal to the width of the web 20. This makes it possible to achieve full coverage of the fabric 20 with the liquid jet discharged from the liquid discharge portion 211.

In the embodiment of the present disclosure, the angle of the liquid jet ejected from the liquid ejecting portion 211 to the fabric 20 may be 15 ° to 45 °, and preferably 25 ° to 30 °. In other words, the liquid ejecting section 211 may have a spraying angle of 15 ° to 45 °, preferably 25 ° to 30 °, with respect to the cloth 20. The distance between the liquid ejecting section 211 and the surface of the drawing roll 21 may be 2cm to 75cm, preferably 5cm to 30cm. The liquid may be subjected to a spray pressure of 1kg/cm ² -5kg/cm ² Preferably 2kg/cm ² -3kg/cm ² . The spraying liquid amount of the spraying device 200 is 5m ³ /h-50m ³ H, preferably 10m ³ /h-30m ³ /h。

In this embodiment, the liquid ejection portion 211 is configured as a plurality of shower ports spaced apart from each other. The plurality of shower openings are preferably spaced apart from one another by the same distance. By the plurality of spraying ports spaced apart from each other at the same interval, uniform spraying of the fabric 20 can be achieved. The plurality of shower openings may be spaced apart from each other by a distance of 2cm to 50cm, preferably by a distance of 5cm to 30cm. In other embodiments, the liquid ejecting portion 211 may be configured as a single elongated shower opening. The single elongated spray opening can be designed as an elongated slot, from which a planar liquid jet can be emitted, so that a uniform spray can also be achieved.

The plurality of spray openings are all configured as round holes with a hole diameter of between 0.1mm and 5mm, preferably between 0.5mm and 2.0mm, particularly preferably 1mm. In other embodiments, at least one of the plurality of spray openings is configured to be elongated. For example, the spray openings can be elongated or elongated. For another example, some of the spray openings may be configured as circular holes, while the remaining spray openings may be configured as elongated, i.e. the spray openings are arranged in a mixed manner. When the hybrid arrangement is employed, the spray openings configured as circular holes and the spray openings configured as elongated holes may be arranged alternately with each other. Therefore, the specific forms and the arrangement modes of the plurality of spraying openings can be selected according to actual requirements by configuring the spraying openings as round holes or long holes and different arrangement modes.

The spraying device 200 may also have a liquid receiving mechanism. The liquid receiving means is configured to receive liquid falling from the pull roll 21. The liquid receiving means may be configured as a separate liquid receiving pan 220, said liquid receiving pan 220 being arranged below the drawing roll 21. Alternatively or additionally, the bottom of the puffing chamber can also act as a liquid receiving means. To prevent liquid accumulation, the liquid receiving mechanism may have a discharge port for discharging the liquid. To this end, the bottom of the liquid receiving pan 220 or the bottom of the expansion tank itself may be configured to be sloped. The discharge opening may preferably be arranged at the lowest point of the ramp structure.

The spraying device 200 may also have a liquid tank 230, the liquid tank 230 being configured to store liquid. The liquid tank 230 may have a liquid inlet and a liquid outlet. The liquid inlet may be in fluid communication with the outlet of the liquid-receiving mechanism, while the liquid outlet may be in fluid communication with the spray mechanism 210.

The spraying device 200 may further have a liquid circulation pump 240, the liquid circulation pump 240 may be arranged between the liquid outlet of the liquid tank 230 and the spraying mechanism 210, said liquid circulation pump 240 being configured for applying a pumping pressure to the liquid flowing to the spraying mechanism 210. The inlet end of the liquid circulation pump 240 may be connected to the liquid tank 230, and the outlet end of the liquid circulation pump 240 may be connected to the spraying mechanism 210

A liquid line 250 may be provided between the liquid tank 230 and the spray mechanism 210. The liquid line 250 may be, for example, a hose or a metal pipe. A liquid circulation pump 240 may be disposed in the liquid line 250.

The liquid tank 230 may have a liquid injection port 231, the liquid injection port 231 configured to inject liquid into the liquid tank 230. Of course, the liquid injection port 231 may be provided at other positions in the circulation system. For example, the liquid injection port 231 may be provided at a specific portion of the liquid line 250.

With the liquid receiving mechanism, the liquid tank 230 and the liquid circulation pump 240 according to the present disclosure, recycling of liquid for spraying can be achieved, thereby making the spraying device 200 more resource-saving and environment-friendly. Of course, the spray device 200 according to the present disclosure may also operate normally without a circulation system. For example, the spray mechanism 210 may be connected to an external liquid supply mechanism. The liquid from the liquid supply mechanism may be ejected from the liquid ejection portion 211 after being pressurized via the pressurization mechanism. The falling liquid can then be drained from the expansion tank 100 via the drain of the liquid receiving mechanism.

In the present disclosure, the liquid may be water. Of course, other types of liquids are also conceivable.

The present disclosure is further illustrated by the following non-limiting application examples, but it should be noted that the application examples should not be construed as limiting the present disclosure.

Example 1:

a washing equipment that is used for printing and dyeing production of 20D nylon fabrics.

The following description is made of the washing apparatus for printing and dyeing ultra-thin nylon fabric using 20D nylon fabric as an example.

The major structure of washing equipment is open width rinsing machine structure, includes: the device comprises a cloth feeding unit, a centering device, a soaking unit, a puffing box 100, 3 groups of padders 3T-drum-shaped washing units, a heavy padder 10T, a soaking unit, a liquid supplementing system, a steam box, a water overflow part, 2 groups of drum-shaped washing units-padders 3T, PH liquid supplementing systems, drum-shaped washing units, padders 3T, drum-shaped washing units, a heavy padder 10T and a cloth discharging and arranging unit.

The puffing box 100 structurally comprises: the device comprises a manual cloth tightener 1, a first traction mechanism 2, a beater 3, a conveying belt 4, a second traction mechanism 5, a double-rib open width roller 6, a third traction mechanism 7, a pressure tension roller 8, a centering roller 9, a saturated steam generator 10, a heating coil 11, a steam seal mechanism 12, a water seal mechanism 13 and a spraying device 200.

The shower apparatus 200 includes: a shower rod located above the last drawing roll 21 side in the first drawing mechanism 2. In addition, the spraying device 200 optionally includes a liquid receiving pan 220 positioned below the last drawing roll 21, a liquid tank 230 connected to the liquid receiving pan 220 or the discharge opening of the bottom of the expansion tank by a liquid line 250, a liquid circulation pump 240, and a liquid line 250.

The liquid inlet end of the liquid circulating pump 240 is connected with the liquid tank 230, and the liquid outlet end is connected with the spray rod.

The length of the spray bar is greater than or equal to the width of the fabric 20 or the length of the last draw roll 21.

Spraying openings are formed in the spraying rod at intervals of 5-30cm in the direction facing the last drawing roller 21. The aperture of the spray opening is 0.5-2.0mm, preferably 1.0mm. The spray nozzles on the spray bar are arranged above the side of the last drawing roller 21 and are 5-50cm away from the surface of the last drawing roller 21.

The spraying water amount of the spraying device 200 is 10-30m3/h. The spraying pressure provided by the liquid circulating pump 240 is 2-3kg/cm ² . The spraying angle of the spraying opening (namely the included angle between the sprayed waterline of the spraying opening and the fabric 20) is 25-30 degrees.

After the printing and dyeing of the 20D nylon fabric, the washing equipment for printing and dyeing the ultrathin nylon fabric is washed with water. Specifically, the 20D nylon fabric is guided by the fabric feeding unit, centered by the centering device, impregnated by the impregnation unit, and introduced into the swelling box 100, sprayed by the spraying mechanism 210 of the spraying device 200 at the last drawing roll 21 of the first drawing mechanism 2 in the swelling box 100, and added with water, and rapidly forms a downward tension under the action of the surface tension and gravity of water, so that the fabric 20 is separated from the last drawing roll 21, and the fabric 20 is stably dropped on the conveyor belt 4 at the lower part of the swelling box 100 under the tension traction, so that the fabric 20 smoothly enters the subsequent washing unit. The flush water flows into the liquid receiving pan 220 or directly to the bottom of the expansion tank, then flows into the liquid tank 230, is pressurized by the circulation pump, and is pumped into the spray bars above the side of the last pull roll 21, forming circulating water.

After the fabric 20 and the fabric 20 are fully bulked in the bulking box 100, the fabric is subjected to 3 groups of padders 3T-drum-shaped washing units, a heavy-duty padder 10T, a dipping unit, a liquid supplementing system, a steam box, a water overflow part, 2 groups of drum-shaped washing units-padders 3T, PH liquid supplementing system, drum-shaped washing units, padders 3T, drum-shaped washing units and a heavy-duty padder 10T, and finally, the water washing is finished after the fabric is discharged through the fabric discharging and arranging unit.

It is noted that the terminology used herein is for the purpose of describing particular aspects only and is not intended to be limiting of the disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be understood that the terms "comprises" and "comprising," and other similar terms, when used in this specification, specify the presence of stated operations, elements, and/or components, but do not preclude the presence or addition of one or more other operations, elements, components, and/or groups thereof. The term "and/or" as used herein includes all arbitrary combinations of one or more of the associated listed items. In the description of the drawings, like reference numerals refer to like elements throughout.

The thickness of elements in the figures may be exaggerated for clarity. It will be further understood that if an element is referred to as being "on," "coupled to" or "connected to" another element, it can be directly on, coupled or connected to the other element or intervening elements may be present. Conversely, if the expressions "directly on … …", "directly coupled with … …" and "directly connected with … …" are used herein, then there are no intervening elements present. Other words used to illustrate the relationship between elements should be similarly interpreted, such as "between … …" and "directly between … …", "attached" and "directly attached", "adjacent" and "directly adjacent", and so forth.

Terms such as "top," "bottom," "above," "below," "over," "under," and the like, may be used herein to describe one element, layer or region's relationship to another element, layer or region as illustrated in the figures. It will be understood that these terms are intended to encompass other orientations of the device in addition to the orientation depicted in the figures.

It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. Thus, a first element could be termed a second element without departing from the teachings of the disclosed concept.

It is also contemplated that all of the exemplary embodiments disclosed herein may be combined with each other as desired.

Finally, it is noted that the above-mentioned embodiments are only for understanding the present disclosure, and do not limit the scope of the present disclosure. It will be apparent to those skilled in the art that modifications may be made in the foregoing embodiments without departing from the scope of the disclosure.

Claims (20)

1. A spraying device, wherein the spraying device is arranged in a bulking box of a washing device for textile printing and dyeing, at least one drawing roller is arranged in the bulking box and is used for drawing textiles, the spraying device is provided with a spraying mechanism, the spraying mechanism is configured to spray liquid to a preset textile separation area of the last drawing roller in the traveling direction of the textiles in the at least one drawing roller, so that the tension of the textiles is increased through the gravity and the surface tension of the liquid, and the textiles can be separated from the last drawing roller by overcoming the attaching force between the textiles and the last drawing roller.

2. The spray device of claim 1, wherein the spray mechanism is disposed laterally above the last pull roll.

3. The spray device of claim 1, wherein the spray mechanism is configured as a spray bar on which a liquid ejection portion for ejecting liquid toward the last pulling roll is provided.

4. The spray device of claim 3, wherein said liquid discharge portion is configured as an elongated spray opening.

5. The spray device of claim 3, wherein the liquid emitting portion is configured as a plurality of spray ports spaced apart from each other.

6. The spray device of claim 5, wherein the plurality of spray openings are spaced apart from one another at a spacing of 2cm to 50cm.

7. The spray device of claim 5, wherein at least one of said plurality of spray openings is configured as a circular hole, and wherein said circular hole has an aperture of between 0.1mm and 5 mm.

8. The spray device of claim 5, wherein at least one of said plurality of spray openings is configured to be elongated.

9. The spray device of claim 3, wherein the liquid ejection portion has at least one of the following operating parameters:

the included angle between the liquid jet flow sprayed by the liquid spraying part and the fabric is 15-45 degrees;

the distance between the liquid spraying part and the surface of the last drawing roller is 2cm-75cm.

10. The spraying device according to claim 3, wherein the liquid ejecting portion extends in a transverse direction of the puffing chamber by a length greater than or equal to a width of the fabric.

11. The spray device of claim 1, wherein said spray mechanism has at least one of the following operating parameters:

the spraying pressure of the liquid is 1kg/cm ² -5kg/cm ² ；

The spraying liquid amount of the spraying device is 5m ³ /h-50m ³ /h。

12. The spraying device of claim 1, wherein the spray mechanism is fixedly disposed on a wall of a housing of the expansion tank.

13. The spray assembly of claim 1 further comprising a liquid receiving mechanism configured to receive liquid falling from said last pull roll, said liquid receiving mechanism having an exit port for exiting liquid.

14. The spray assembly of claim 13 wherein said liquid receiving mechanism is configured as a separate liquid receiving pan disposed below said last pull roll; and/or the bottom of the expansion tank serves as a liquid receiving mechanism.

15. The spray device of claim 13, further comprising a liquid tank configured to store a liquid, the liquid tank having a liquid inlet in fluid communication with the outlet of the liquid receiving mechanism and a liquid outlet in fluid communication with the spray mechanism.

16. The spray device of claim 15, further comprising a liquid circulation pump disposed between the liquid outlet of the liquid tank and the spray mechanism, the liquid circulation pump configured to apply a pumping pressure to the liquid flowing to the spray mechanism.

17. The spray device of claim 15, wherein the liquid tank has a liquid injection inlet configured to inject liquid into the liquid tank.

18. The spray device of claim 1, wherein the fabric is a nylon fabric.

19. Expansion tank, characterized in that it comprises a spraying device according to any one of claims 1 to 18.

20. A washing apparatus for textile printing and dyeing, characterized in that it comprises a swelling tank according to claim 19.

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