KR20080097901A - Nozzle for jet fabric dyeing machine - Google Patents

Abstract

A nozzle for jet textile dyeing is provided to occupy no large volume, to optimize a liquor ratio and to perform a uniform dyeing. A tube shape nozzle member(23) is formed by four side walls, has a parallelogram shape of cross section and passes fabric. A nozzle gap(24) is at the first lateral wall(26A) of the nozzle member and passes the fluid jet applied in the fabric which is in the nozzle member.

Description

NOZZLE FOR JET FABRIC DYEING MACHINE}

The present invention relates to a nozzle for a jet textile dyeing machine.

The fabric is usually dyed in a high speed jet dyeing machine. Such dyeing machines include a series of pipes, tubes, and chambers arranged in order to communicate in order to form an infinite fabric travel path. Fabrics constructed as endless ropes pass around the path and are led by one or more high pressure fluid (saline) jets directed over the ropes.

The fluid jet is applied by the nozzle. The nozzle includes a tubular opening through which the fabric rope passes. One or more gaps in the wall of the opening direct the jet at high pressure and over the rope inside the opening, causing the rope to move forward along the path of travel.

The configuration of such nozzles can be problematic. On the one hand, the nozzle should not occupy too much space, which causes too much volume of fluid to be filled inside the dyeing machine and the liquid ratio (the ratio of the volume of salt solution to the weight / amount of fabric required to achieve the desired dyeing result). Because it affects. In contrast, the nozzle must be able to transport a sufficiently strong saline jet and a sufficient volume of saline so that the saline solution penetrates uniformly over and into the fabric.

Typically, the nozzle opening is circular in cross section. The opening is mounted to a nozzle casing that forms a chamber around the opening. The casing has an inlet pipe, which is fed to the chamber through the inlet pipe, which communicates with the nozzle gap to transport the fluid jet through the wall of the opening and onto the fabric.

To achieve a uniform dyeing effect, the fabric rope is preferably exposed across the width of the fabric during dyeing and its position is changed each time it passes through the nozzle. This allows the salt solution to be applied effectively and evenly onto the fabric and into the fabric. However, circular nozzles tend to compress and compress the fabric passing through the nozzle rather than allowing the fabric to extend in the width direction.

Nozzles with elliptical cross sections have been proposed to provide a wide range in the width direction so that the fabric does not fold when fluid is ejected onto the fabric. However, the elliptic shape was found to still tend to press and compress the fabric.

In addition, as the salt solution moves through the inlet pipe on the side of the nozzle casing to the nozzle gap, different fluid pressures are generated in the fluid exiting different portions of the nozzle gap. This may also be the cause of nonuniformity in dyeing.

It is an object of the present invention to provide a nozzle assembly for a jet fabric dyeing machine and a jet fabric dyeing machine equipped with the nozzle assembly, which can optimize the liquid ratio and perform uniform dyeing without taking up too much volume.

Thus, one aspect of the invention is a tubular nozzle member formed by four sidewalls and having a cross-sectional cross-sectional shape passing through the fabric as it moves, and the fabric running along the path of travel along the first sidewall of the nozzle member. And a nozzle gap through which a fluid jet that can be applied to the fabric in the nozzle member passes.

The nozzle member having a parallelogram cross section provides space for the fabric to bend and unfold by the force of a fluid jet applied to the fabric. Exposing the fabric in this way also allows a greater dyeing effect to be obtained, as well as making the fabric less dense, resulting in less wrinkles. Although any parallelogram shape can be used, it has been found that rectangular parallelograms are better to manufacture, and that rectangles can provide more adequate space to spread the fabric wider than squares. Thus, in some embodiments, the nozzle member may have a substantially rectangular cross section.

The fabric inlet end of the nozzle member may have a cross section that narrows along the direction of travel of the fabric. This allows the fabric to concentrate down to the nozzle gap and also reduces the likelihood that the fabric will get caught by the edge of the nozzle member.

The nozzle assembly may further include an outer casing having a nozzle member mounted therein and forming a chamber around the nozzle assembly, and fluid may be transferred from the chamber to the nozzle gap.

The outer casing may have a fluid inlet pipe, and fluid may be transferred to the chamber through the fluid inlet pipe. In some embodiments, the fluid inlet pipe may be aligned with the first sidewall of the nozzle chamber. This provides the shortest path to the fluid from the inlet pipe to the nozzle gap, thus requiring less volume of fluid in the chamber. However, a straight line of this type results in non-uniform jets through the nozzle gaps and non-uniformity. Therefore, the nozzle assembly may further comprise a deflection plate mounted in the outer casing to block the passage through which the fluid flows straight from the inlet pipe to the nozzle gap. The deflection plate distributes the incoming fluid, allowing the incoming fluid to be distributed more evenly over the nozzle gap.

In some examples, the outer casing can be cylindrical. This provides a manufacturing convenience.

In some embodiments, the nozzle assembly further comprises a fluid diverter, the fluid diverter blocking a portion of the fluid jet applied through the nozzle gap such that the blocked fluid described above is different from the direction of the unblocked portion of the fluid jet. Is directed onto the fabric in the nozzle member. The direction of application of the second fluid can provide a more uniform staining effect. The fluid diverter may be configured such that the blocked portion of the fluid jet is directed to the fabric portion substantially opposite the fabric portion to which the unblocked portion of the fluid jet is applied.

The fluid diverter includes an inner wall of the nozzle member spaced inward from a side wall adjacent to the first side wall to separate the nozzle gap into two portions, and an extension between the first side wall and the inner wall such that the blocked portion of the fluid jet is separated from the first side wall. It may include a blade facing down a portion of the distant inner wall.

In some embodiments, the nozzle assembly may further comprise a guide tube extending from the fluid outlet of the nozzle member, the guide tube having a cross-sectional cross-sectional shape, which crosses along the direction of travel of the fabric. . The guide tube provides an expanded space to allow the fabric to unfold inside, which also helps to improve the dyeing effect. The distal end of the guide tube may form an open fan shaped trap.

The nozzle assembly can be configured to be mounted inside a jet fabric dyeing machine so that the first sidewall of the nozzle member is lower than the other three sidewalls. This configuration allows the fluid jet to be applied to the bottom of the fabric, so that the fabric is pushed upwards and then falls under gravity, which further improves the opening-up of the fabric.

A second aspect of the invention relates to a jet fabric dyeing machine comprising a nozzle assembly according to the first aspect. The nozzle assembly can be mounted inside a jet fabric dyeing machine, such that the first sidewall of the nozzle member is lower than the other three sidewalls.

According to the present invention, it is possible to provide a nozzle assembly for a jet fabric dyeing machine and a jet fabric dyeing machine equipped with the nozzle assembly capable of optimizing liquid ratio and performing uniform dyeing without taking up too much volume.

For a better understanding of the invention and to show how the invention may be practiced and to take effect, reference is made to the accompanying drawings by way of example.

1 is a side view of an example of a conventional jet fabric dyeing machine. The dyeing machine 1 comprises a cylindrical main chamber 11 and a small diameter moving tube 13 arranged below the main chamber 11 and connected to each end of the main chamber 11. Thus, the main chamber 11 and the moving tube 13 form a continuous and closed path, around which the endless rope of the fabric can be circulated in contact with the saline solution or other processing fluid. The fabric is dyed or otherwise processed during certain processing times circulating around the dyeing machine.

The fabric rope is led along the path of travel around the dyeing machine by the nozzle assembly 12, which is located at the inlet to the moving tube 13 and at one end of the main chamber 11. Typically the nozzle assembly comprises a tubular nozzle member through which the fabric passes (thus the nozzle member forms part of the fabric travel path). High pressure fluid jets, such as saline or other processing fluids, are directed onto the fabric through a gap in the side wall of the nozzle member, and the pressure of the fluid causes the fabric to be pushed along its path. A rotating roller is provided near the inlet of the nozzle assembly 12 to feed the fabric from the main chamber to the tubular nozzle member.

2 is a perspective view of the outside of a nozzle assembly according to an embodiment of the present invention that may be employed in a jet fabric dyeing machine, such as in a jet fabric dyeing machine as shown in FIG. 1.

The nozzle assembly 10 comprises a nozzle portion 2 connected to a guide tube 3. The nozzle portion 2 has a central opening (see FIG. 3) extending therethrough, which communicates with the guide tube 3 to form an extended tubular opening. When included in a jet fabric dyeing machine, the elongated tubular opening forms part of a continuous path of travel of the fabric rope, the fabric rope passing through the tubular opening. Arrow T in FIG. 2 indicates the direction of movement of the fabric through the nozzle assembly.

3 is a perspective view illustrating the inside of the nozzle portion 2 of the nozzle assembly 10. The nozzle portion 2 comprises a tubular nozzle member 23, which forms a central opening through the nozzle portion 2. The nozzle member 23 is formed of four side walls, and these four side walls are arranged so that the nozzle member 23 has a substantially rectangular cross section. In FIG. 3, a first sidewall 26A, a second sidewall 26B opposite the first sidewall, and a third sidewall 26C connecting the first sidewall and the second sidewall are shown. The fourth side wall opposite to the third side wall is cut and cannot be seen in this figure. The side walls extend from the fabric inlet end 29 of the nozzle member 23 to the fabric outlet end 30 of the nozzle member 23. Again, the arrow T indicates the direction in which the fabric moves through the nozzle member 23, from the fabric inlet end 29 to the fabric outlet end 30. In this example, the side wall 26 extends outward toward the fabric inlet end 29, so that the cross section of the nozzle member 23 narrows along the direction of movement of the fabric. This helps the fabric rope pass into the nozzle member and reduces the risk of the fabric catching on the edge of the nozzle member, but is not essential.

The nozzle gap 24 is formed in the first sidewall 26A of the nozzle member 23. In this example, the nozzle gap 24 extends across the width of the first sidewall and is a slot formed between two parallel slant plates 31A and 31B, so that the nozzle gap 24 is inclined along the axis of the nozzle member 23. You lose. Thus, the jet of fluid from the nozzle gap 24 is directed substantially along the direction of travel of the fabric, thus causing the fabric at the nozzle member 23 to advance in the forward direction along the path of travel of the fabric.

Fluid is transferred from the fluid chamber 32 out of the nozzle member 23 through the nozzle gap 24. An outer casing or shell 22 is provided around the nozzle member 23, which is mounted inside the outer casing 22. An empty space between the outer casing 22 and the nozzle member 23 forms the chamber 32. In this example, the outer casing 22 is cylindrical and the nozzle member 23 has a circular cross section in a plane having a rectangular cross section. This shape of the outer casing is easier to manufacture compared to square or rectangular outer casing, but does not exclude other shapes.

In the outer casing 22 the fluid inlet pipe 21 is directed into the side wall of the outer casing, through which the fluid enters the chamber 32 and is transferred to the nozzle gap 24. The fluid inlet pipe 21 may be connected to the fluid circulation pipe of the textile dyeing machine to supply fluid to the inlet pipe by a pump in the pipe. The fluid inlet pipe 21 can be located anywhere on the outer casing 22. However, in the example shown, the fluid inlet pipe 21 is positioned to align with the first sidewall 26A of the nozzle member 23 where the nozzle gap 24 is located. In other words, the fluid inlet pipe 21 comes closest to the first sidewall 26A and is substantially orthogonal to the first sidewall 26A.

In such a configuration, fluid entering the chamber 32 from the fluid inlet pipe 21 may flow straight through the nozzle gap 24, which may be used to transfer the fluid through the nozzle gap 24. This reduces the volume of fluid that must be present in 32). This may also be beneficial in reducing the liquid volume of the fabric dyeing machine (the volume of saline solution per fabric weight required for satisfactory dyeing results). However, it can be seen that this path of fluid directing from the fluid inlet pipe 21 to the nozzle gap 24 prevents the fluid from being evenly distributed across the nozzle gap 24, resulting in a non-uniform fluid jet. . To solve this, the deflection plate 28 may be provided. The deflection plate is mounted to the outer casing 22 slightly past the inlet of the fluid inlet pipe 21 and blocks the path where the fluid flows directly between the fluid inlet pipe 21 and the nozzle gap 24, so that the fluid is in the nozzle gap. Redistribute the fluid before reaching (24). The deflection plate 28 may be convex to the incoming fluid to provide less resistance.

In FIG. 3, the nozzle assembly 2 is shown inclined at an angle, so that the fabric path through the nozzle member 23 is inclined downward. The nozzle assembly 2 may be configured to be mounted inside the fabric dyeing machine in an inclined state by a predetermined angle. The nozzle assembly is also arranged such that the first sidewall 26A with the nozzle gap 24 of the nozzle members 23 is the lowest of the four sidewalls 26. When so arranged, the fluid jet from the nozzle gap 24 is applied to the bottom surface of the fabric rope. This causes the fabric rope to face upward, facing the opposite sidewall 26B. This movement up and away from the fluid jet, combined with the subsequent falling of the fabric under gravity, as the fabric moves past the fluid jet, allows the fabric to reposition itself as it bends greatly apart. The rectangular shape of the nozzle element 23 controls this opening-up of the fabric rope to reduce the denseness of the fabric and also to obtain a better dyeing effect.

Despite the advantages provided by this configuration, it can be seen that applying fluid to only one side of the fabric rope results in uneven dyeing. To solve this, the nozzle assembly may further comprise a fluid diverting device for directing a portion of the fluid jet towards the other side of the fabric rope as the fabric rope passes through the nozzle member 23. Specifically, with respect to the fabric rope to which fluid is directly applied through the nozzle gap 24, a portion of the jet can be transferred to the opposite side of the fabric rope.

This may be accomplished by blocking a portion of the fluid jet passing through the nozzle gap 24, redirecting away from the nearest bottom of the fabric rope to the other side of the rope. This can be accomplished using any suitable structure, an example of which is shown in FIG. 3. The nozzle member 23 includes an additional wall portion in the form of an inner wall 25 spaced in parallel from the third sidewall 26C adjacent to the first sidewall 26A and disposed substantially parallel thereto. The inner wall 25 extends across the sidewall 26C to reach the nozzle gap 24 at the first sidewall 26A. Thus, the nozzle gap 24 is divided into two parts in terms of its height. Fluid passing through the major portion of the nozzle gap 24 is applied directly to the fabric at the nozzle member 23. The fluid passing through the other portion of the nozzle gap enters the space between the inner wall 25 and the third sidewall 26C and is separated from the fabric in the nozzle member 23.

A blade 27, which may be curved or twisted to improve the orientation and transport of the fluid, is disposed between the inner wall 25 and the third sidewall 26C, between two walls downstream from the nozzle gap 24. Extends across the space. The blade is inclined downward with respect to the direction of movement of the fabric to orient the fluid entering the space below the lower side of the inner wall 25, i.e., near the second sidewall 26B opposite the first sidewall 26A. . Thus, the fluid is transported onto the fabric in the nozzle member 23 substantially opposite the fabric portion to which the fluid is applied directly from the nozzle gap 24.

4 shows the inner wall 25 and the blade 27 in more detail. Note the outward bending of the leading edge of the inner wall 25, which reduces the fabric entering the nozzle member 23 over the inner wall 25.

Returning to FIG. 2, the nozzle assembly 10 also includes a guide tube 3 connected to the fabric outlet end 30 of the nozzle member 23. The guide tube 3 is formed of four side walls and has a rectangular cross section. Since the side walls are arranged to spread outward, the cross section is widened along the direction of movement of the fabric. Thus, the guide tube provides an additional space of a wider rectangle, in which the fabric can unfold and unfold under the action of an applied fluid jet.

At the downstream end of the guide tube 3, there is provided a distal trape 32, which has no upper side wall and at least the lower of the remaining walls continues outward. The distal end is thus provided with a fan-shaped or shovel-shaped trap to accommodate the stretched fabric rope before the fabric passes through the next part of the dyeing machine so that the fabric is not dense over the path of travel of the fabric. The length of the part is extended.

The nozzle assembly 2 shown in FIGS. 2, 3 and 4 is only an example of the present invention. The invention may be practiced using elements of a different shape and configuration than shown. The deflection plate 28, the fluid diverter, the outer casing 22, and the guide tube 3 may be omitted or included as necessary, and may have a shape different from that shown while performing each of the functions described above. In addition, the nozzle member 23 may have a square cross section. The term "rectangle" as used herein is to be understood to include a special example of "square". Parallelogram shapes with angles other than right angles may also be used, and it should be understood that the term "rectangle" also includes these shapes.

1 is a side view of a conventional jet fabric dyeing machine in which a nozzle assembly according to the invention can be used.

2 is an outer perspective view of a nozzle assembly according to an embodiment of the present invention.

3 is a perspective view of the inside of a part of the nozzle assembly of FIG. 2;

4 is a perspective view of a fluid diverter included in the nozzle assembly of FIG. 2.

<Explanation of symbols for main parts of the drawings>

1: jet fabric dyeing machine

3: tube

10: nozzle assembly

11: main chamber

12: nozzle assembly

13: moving tube

21: fluid inlet pipe

22: outer casing

23: tubular nozzle member

24: nozzle gap

25, 27: fluid diverter

26: sidewall

29: entrance

30: exit stage

32: trap part

T: travel path

Claims (16)

Nozzle assembly 10 for jet fabric dyeing machine 1, A tubular nozzle member 23 formed by four side walls 26 and having a cross-sectional shape in parallelogram shape and passing through the fabric as it moves; And A nozzle gap 24 at the first sidewall 26A of the nozzle member through which fluid jets are applied to the fabric at the nozzle member to advance the fabric along the travel path T. The nozzle assembly comprising a. The nozzle assembly of claim 1, wherein the nozzle member has a substantially rectangular cross section. 3. The nozzle assembly of claim 1 or 2, wherein the fabric inlet end (29) of the nozzle member has a cross section that narrows along the direction of travel of the fabric. 4. The nozzle of claim 1, further comprising an outer casing 22, wherein the nozzle member is mounted therein and forms a chamber 32 around the nozzle assembly, wherein the fluid is nozzle from the chamber. Nozzle assembly that can be conveyed to the gap. 5. The nozzle assembly of claim 4, wherein the outer casing has a fluid inlet pipe (21), and the fluid can be conveyed through the fluid inlet pipe to the chamber. 6. The nozzle assembly of claim 5, wherein the fluid inlet pipe is aligned with the first sidewall of the nozzle member. 7. The nozzle assembly of claim 6, further comprising a deflection plate (28) mounted inside the outer casing to block a path through which fluid flows directly from the fluid inlet pipe to the nozzle gap. 8. The nozzle assembly of claim 4, wherein the outer casing is cylindrical. The nozzle according to any one of claims 1 to 8, wherein the part of the fluid jet applied through the nozzle gap is blocked so that the blocked fluid jet is different from the direction of the unblocked part of the fluid jet. And a fluid diverter (25, 27) configured to face over the fabric in the member. 10. The nozzle assembly of claim 9, wherein the fluid diverter is configured to direct a blocked fluid jet over a portion of the fabric that substantially faces a portion of the fluid jet to which an unblocked portion is applied. The inner wall 25 of the nozzle member according to claim 9 or 10, wherein the fluid diverter is spaced inward from the side wall 26C adjacent to the first side wall and divides the nozzle gap into two parts, and the first portion. And a blade (27) extending between the sidewall and the inner wall to direct the blocked portion of the fluid jet down the portion away from the first sidewall of the inner wall. 12. A guide according to any one of the preceding claims, wherein the guide extends from the fluid outlet end 30 of the nozzle member and has a cross-section of parallelogram shape, which crosses along the direction of travel of the fabric. Nozzle assembly further comprising a tube (3). 13. The nozzle assembly of claim 12, wherein the distal end of the guide tube is formed of an open fan shaped trapped portion (32). 14. The nozzle assembly according to any one of the preceding claims, wherein the first sidewall of the nozzle member is lower than the other three sidewalls so as to be mountable inside the jet fabric dyeing machine (1). A jet fabric dyeing machine comprising a nozzle assembly (10) according to any one of the preceding claims. The jet fabric dyeing machine according to claim 15, wherein a nozzle assembly having a first sidewall of the nozzle member lower than the remaining three sidewalls is mounted therein.

Images