Uniform flow dyeing machine for knitted fabric production

Abstract

The utility model relates to the technical field of dyeing machines, and provides a uniform flow dyeing machine for knitted fabric production, which comprises a plurality of mixing barrels arranged on one side of a dyeing barrel, communicated with a dye liquor outlet and used for collecting and mixing dye flowing out of the dye liquor outlet; the material mixing shaft is rotationally arranged in the material mixing barrel, and the material mixing shaft is used for stirring dye in the material mixing barrel; the plurality of mixing pumps are communicated with the mixing barrel, and the mixing pumps are used for pumping out the dye in the mixing barrel; one end of the heat exchanger is communicated with the outlet of the mixing pump, and the other end of the heat exchanger is communicated with the dye liquor inlet. By means of the technical scheme, the problem that in the prior art, color difference occurs in the dyeing process due to the fact that dye liquor flows unevenly in the dyeing process is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of dyeing machines, in particular to a uniform flow dyeing machine for knitted fabric production. Background Art

[0002] Knitted fabrics are widely used in clothing, home furnishings, and other fields. The vividness, uniformity, and color fastness of their colors are crucial to the quality and appearance of the product. Dyeing is a key step in the production of knitted fabrics, not only imparting a variety of colors but also enhancing their added value and market competitiveness.

[0003] Traditional dyeing machines circulate the dye liquor after it enters the dyeing machine to ensure dyeing quality and efficiency. However, during this process, uneven dye liquor flow often leads to uneven dyeing of knitted fabrics. This not only affects product quality but also increases subsequent finishing costs. Utility Model Content

[0004] The utility model provides a uniform flow dyeing machine for knitted fabric production, which solves the problem in the related art that color difference may occur during the dyeing process due to the uneven flow of the dye liquid itself during dyeing.

[0005] The technical solution of the utility model is as follows:

[0006] A uniform flow dyeing machine for knitted fabric production, comprising:

[0007] A dyeing drum having a dyeing space and a plurality of cloth inlets and outlets connected to the dyeing drum, a plurality of dye liquid inlets and a plurality of dye liquid outlets, wherein the plurality of dye liquid outlets are located at the bottom of the dyeing drum, and the dyeing space is used to accommodate the cloth to be dyed and dye it;

[0008] A mixing cylinder is provided on one side of the dyeing cylinder, the mixing cylinder is connected to the dye liquid outlet, and a plurality of the mixing cylinders are used to collect and mix the dyes flowing out of the dye liquid outlet;

[0009] A mixing shaft, rotatably disposed in the mixing barrel, and used for stirring the dye in the mixing barrel;

[0010] There are several mixing pumps, which are connected to the mixing cylinder and are used to pump out the dye in the mixing cylinder;

[0011] A heat exchanger, one end of which is connected to the outlet of the mixing pump and the other end of which is connected to the dye liquor inlet, is used to heat the dye.

[0012] As a further technical solution, the mixing barrel has a mixing space therein and further comprises:

[0013] The turbulence plate is arranged in the mixing barrel, and the turbulence plate divides the mixing space.

[0014] As a further technical solution, the turbulent plate is provided with a plurality of flow holes, and the plurality of flow holes are used to disrupt the flow of the dye solution.

[0015] As a further technical solution, it also includes:

[0016] A spiral mixing plate is arranged on the mixing shaft, and the spiral mixing plate is used for stirring the dye.

[0017] As a further technical solution, the turbulence plate is arc-shaped, and the spiral mixing plate abuts against the turbulence plate.

[0018] As a further technical solution, it also includes:

[0019] A discharging rack is provided on the side of the dyeing drum located at the cloth inlet and outlet;

[0020] A feeding shaft is rotatably arranged on the discharging rack, and the feeding shaft is used to carry and assist the dyed cloth to leave the dyeing drum through the cloth inlet and outlet.

[0021] As a further technical solution, the mixing barrel is provided with a waste liquid outlet, and the waste liquid outlet is located at the bottom of the mixing barrel.

[0022] The working principle and beneficial effects of the utility model are as follows:

[0023] In the present invention, the design of multiple fabric inlets and outlets, dye liquor inlet and outlet within the dyeing drum allows the dye liquor to more fully contact the fabric to be dyed, thereby improving dyeing uniformity. The different inlets and outlets ensure a more uniform flow of dye liquor within the dyeing chamber, preventing localized dyeing unevenness. The provision of a mixing drum collects and mixes the dye liquor flowing out of the dyeing drum, ensuring a uniform composition of the dye liquor. The stirring action of the mixing shaft further enhances the mixing effect of the dye liquor, allowing the dye to be more evenly distributed throughout the dye liquor, thereby providing a more stable and uniform dye liquor for the subsequent dyeing process. The use of a heat exchanger heats the dye liquor, improving dyeing efficiency. By heating the dye liquor pumped out of the mixing pump through the heat exchanger before feeding it into the dyeing drum, the dye liquor is ensured to be at the appropriate temperature upon entering the dyeing chamber, thereby accelerating the diffusion and adsorption of the dye and increasing the dyeing speed. The structure of this uniform flow dyeing machine is relatively compact, and the connections and coordination between the various components are relatively smooth. Operators can easily control the operation of equipment such as mixing pumps and heat exchangers through simple operations, effectively monitoring and adjusting the dyeing process. Uniform dyeing improves the quality of knitted fabrics and reduces the defective rate caused by uneven dyeing. Stable dye liquor composition and temperature control ensure consistent dyeing results for each batch of knitted fabric, improving product consistency and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The preferred embodiments will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0025] Figure 1 This is a schematic diagram of the structure of the utility model;

[0026] Figure 2 This is a structural diagram of the utility model from another perspective;

[0027] Figure 3 This is a schematic diagram of the structure inside the mixing cylinder of the utility model;

[0028] Figure 4 For this utility model Figure 3 A partial enlarged view of the .

[0029] In the figure: 1. Dyeing cylinder, 2. Dyeing space, 3. Fabric inlet and outlet, 4. Dye liquid inlet, 5. Dye liquid outlet, 6. Mixing cylinder, 7. Mixing shaft, 8. Mixing pump, 9. Heat exchanger, 10. Mixing space, 11. Turbulence plate, 12. Flow hole, 13. Spiral mixing plate, 14. Discharge rack, 15. Feed shaft, 16. Waste liquid outlet. DETAILED DESCRIPTION

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, they can also be understood as further technical solutions without paying creative work. In some figures, components with the same structure or function are schematically illustrated, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0031] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0032] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0033] Reference Figures 1 to 4 , which is the first embodiment of the utility model, proposes a uniform flow dyeing machine for knitted fabric production, comprising: a dyeing cylinder 1 having a dyeing space 2 and a plurality of cloth inlets and outlets 3 connected to the dyeing cylinder 1, a plurality of dye liquid inlets 4 and a plurality of dye liquid outlets 5, the plurality of dye liquid outlets 5 being located at the bottom of the dyeing cylinder 1, the dyeing space 2 being used to accommodate the cloth to be dyed and dye it; a mixing cylinder 6 being arranged on one side of the dyeing cylinder 1, the mixing cylinder 6 being connected to the dye liquid outlet 5, the plurality of mixing cylinders 6 being used to collect and mix the dye flowing out of the dye liquid outlet 5; a mixing shaft 7 being rotatably arranged in the mixing cylinder 6, the mixing shaft 7 being used to stir the dye in the mixing cylinder 6; a plurality of mixing pumps 8 being connected to the mixing cylinder 6, the mixing pump 8 being used to pump out the dye in the mixing cylinder 6; a heat exchanger 9 being connected at one end to the outlet of the mixing pump 8 and at the other end to the dye liquid inlet 4, the heat exchanger 9 being used to heat the dye.

[0034] In this embodiment, the design of multiple fabric inlets and outlets 3, dye liquor inlet 4, and dye liquor outlet 5 in the dyeing drum 1 allows the dye liquor to more fully contact the fabric to be dyed, thereby improving the uniformity of dyeing. The inlets and outlets at different positions can ensure that the dye liquor flows more evenly within the dyeing space 2, avoiding the occurrence of localized uneven dyeing. The setting of the mixing drum 6 can collect and mix the dye liquor flowing out of the dyeing drum 1, ensuring that the composition of the dye liquor is uniform. The stirring action of the mixing shaft 7 further enhances the mixing effect of the dye liquor, allowing the dye to be more evenly distributed in the dye liquor, thereby providing a more stable and uniform dye liquor for the subsequent dyeing process. The use of the heat exchanger 9 can heat the dye liquor, improving dyeing efficiency. By heating the dye liquor pumped out by the mixing pump 8 through the heat exchanger 9 before sending it into the dyeing drum 1, it can be ensured that the dye liquor has a suitable temperature when entering the dyeing space 2, thereby accelerating the diffusion and adsorption process of the dye and increasing the dyeing speed. The structure of this uniform flow dyeing machine is relatively compact, and the connection and coordination between the various components are relatively smooth. Operators can easily control the operation of equipment such as the mixing pump 8 and heat exchanger 9 through simple operations, effectively monitoring and adjusting the dyeing process. Uniform dyeing improves the quality of knitted fabrics and reduces the defective rate caused by uneven dyeing. Stable dye liquor composition and temperature control ensure consistent dyeing results for each batch of knitted fabrics, improving product consistency and stability.

[0035] As a further technical solution, the mixing barrel 6 has a mixing space 10 therein, and further comprises: a turbulence plate 11 disposed in the mixing barrel 6 , the turbulence plate 11 dividing the mixing space 10 .

[0036] In this embodiment, turbulence is promoted: the presence of the turbulence plates 11 prevents the flow of the dye liquor within the mixing drum 6 from being a simple laminar flow. As the dye liquor flows through the turbulence plates 11, its flow direction and velocity change, generating turbulence. Turbulence allows the different components in the dye liquor to mix more thoroughly, improving the uniform distribution of the dye within the dye liquor. After the turbulence plates 11 divide the mixing space 10, the dye liquor needs to flow around the turbulence plates 11, which increases the contact area between the dye liquor and the inner wall of the mixing drum 6 and the surface of the turbulence plates 11. More contact area means more opportunities for the dye molecules to interact and mix with other substances within the mixing drum 6, further improving the mixing effect of the dye liquor. By enhancing the mixing effect of the dye liquor, the turbulence plates 11 ensure that the composition of the dye liquor flowing out of the mixing drum 6 is more uniform. This is crucial for the dyeing process of knitted fabrics, as a uniform dye liquor ensures that the knitted fabrics achieve the same dyeing effect in different dyeing batches, reducing color differences and uneven dyeing problems, and improving the stability of dyeing quality.

[0037] As a further technical solution, the turbulence plate 11 is provided with a plurality of flow holes 12 , and the plurality of flow holes 12 are used to disrupt the flow of the dye solution.

[0038] In this embodiment, the dye liquid's originally relatively stable flow state is disrupted when it flows through the turbulence plate 11. The presence of the flow holes 12 causes the flow velocity and flow direction of the dye liquid to change dramatically when passing through these small holes. The dye liquid suddenly enters the smaller flow hole 12 from the larger space and then sprays out from the flow hole 12. This process produces a strong turbulent effect. The area around the flow hole 12 will form a local high-speed flow and low-pressure area, which further aggravates the disturbance of the dye liquid. The dye liquid sprayed from different flow holes 12 collides and intersects with each other, allowing the dye molecules, auxiliaries, etc. in the dye liquid to mix more thoroughly, greatly improving the mixing uniformity of the dye liquid. The provision of the flow holes 12 increases the flow path and contact opportunities of the dye liquid in the mixing space 10. In the process of passing through the flow holes 12, the dye liquid contacts and exchanges more frequently with the surface of the turbulence plate 11 and the surrounding dye liquid, thereby accelerating the diffusion and mixing process of the dye.

[0039] As a further technical solution, the invention further comprises: a spiral mixing plate 13 is arranged on the mixing shaft 7, and the spiral mixing plate 13 is used to stir the dye.

[0040] In the present embodiment, the spiral mixing plate 13 can form a spiral stirring path in the mixing drum 6 along with the rotation of the mixing shaft 7. Compared with traditional straight stirring blades, the stirring range of the spiral mixing plate 13 is larger, and can cover more areas in the mixing drum 6, ensuring that the dye liquor is more fully stirred. The spiral structure of the spiral mixing plate 13 makes the dye liquor not only subject to the driving force in the horizontal direction during stirring, but also subject to the lifting force in the vertical direction. This three-dimensional stirring action can make the dye liquor form a more complicated flow pattern in the mixing drum 6, increase the turbulence level of the dye liquor, thereby improve the stirring force, and make dyestuff and other auxiliary agents more evenly mixed in the dye liquor. In the rotation process, the spiral mixing plate 13 can, like a screw conveyor, lift the dye liquor upwards from the bottom of the mixing drum 6, and promote the dye liquor to spread to all around at positions of different heights. This effect helps to promote the circulation of the dye liquor in the mixing drum 6, avoids the dye liquor to occur local stagnation or stratification phenomenon. The stirring method of the spiral mixing plate 13 can be used as a further technical solution. For dye solutions with higher viscosity, the rotation speed of the mixing shaft 7 can be appropriately reduced to avoid excessive stirring that causes the dye solution to heat up too quickly or generate too much foam. For dye solutions containing larger particles, a spiral mixing plate 13 with a larger pitch can be selected to prevent particles from clogging the stirring device.

[0041] As a further technical solution, the turbulence plate 11 is arc-shaped, and the spiral mixing plate 13 abuts against the turbulence plate 11 .

[0042] In this embodiment, the turbulence plate 11 is curved and can guide the dye liquid to form a specific flow trajectory in the mixing barrel 6. When the dye liquid flows through the curved turbulence plate 11, its flow direction will change continuously, increasing the turbulence level and mixing effect of the dye liquid. This curved flow path can make the dye liquid more fully contact with other components in the mixing barrel 6, improving the uniformity of the dye liquid. The spiral mixing plate 13 abuts the curved turbulence plate 11, further optimizing the flow path of the dye liquid. During the rotation process, the spiral mixing plate 13 can fit closely with the curved turbulence plate 11, stirring and pushing the dye liquid along the curved surface of the turbulence plate 11. This can avoid the occurrence of dead corners or local poor flow of the dye liquid in the mixing barrel 6, ensuring that the dye liquid is fully mixed in the entire mixing space 10. The spiral mixing plate 13 abuts the curved turbulence plate 11, increasing the contact area between the two. During the stirring process, the dye liquor will generate strong shearing force and friction force between the spiral mixing plate 13 and the turbulent plate 11, which helps to further break the agglomeration state of the dye molecules and promote the dispersion and dissolution of the dye in the dye liquor.

[0043] As a further technical solution, it also includes: a discharge rack 14 is arranged on the side of the dyeing drum 1 located at the cloth inlet and outlet 3; a feeding shaft 15 is rotatably arranged on the discharge rack 14, and the feeding shaft 15 is used to carry and assist the dyed cloth to leave the dyeing drum 1 through the cloth inlet and outlet 3.

[0044] In this embodiment, the discharge rack 14 provides a stable support platform for the dyed fabric. As the fabric exits the fabric inlet / outlet 3 of the dyeing drum 1, the discharge rack 14 ensures that the fabric remains in a stable position during its exit from the dyeing drum 1, preventing the fabric from sagging or tangling due to gravity or other external forces. A feed shaft 15 is rotatably mounted on the discharge rack 14, supporting and assisting in the smooth exit of the dyed fabric from the fabric inlet / outlet 3 through the dyeing drum 1. The rotation of the feed shaft 15 reduces friction between the fabric and the discharge rack 14, allowing the fabric to pass more smoothly through the discharge rack 14 and improving discharge efficiency. Without the feed shaft 15, the fabric might directly contact the surface of the discharge rack 14, potentially causing scratches and wear. The presence of the feed shaft 15 separates the fabric from the discharge rack 14, preventing direct friction between the fabric and the discharge rack 14, thereby protecting the fabric's surface quality and reducing the risk of defects and damage.

[0045] As a further technical solution, a waste liquid outlet 16 is provided in the mixing barrel 6 , and the waste liquid outlet 16 is located at the bottom of the mixing barrel 6 .

[0046] In the present embodiment, waste liquid outlet 16 is arranged at the bottom of mixing drum 6, can make full use of gravity, make the waste liquid in mixing drum 6 can flow to outlet naturally.Can ensure that waste liquid can be discharged smoothly like this, avoid waste liquid to accumulate in mixing drum 6, affect the mixing effect and dyeing quality of dye liquor.When needing to discharge waste liquid, because waste liquid outlet 16 is located at the bottom, after opening outlet valve, waste liquid can flow out rapidly, reduces discharge time.This is very advantageous for the situation that needs to frequently change dye liquor or carry out equipment cleaning, can improve production efficiency.The waste liquid outlet 16 at the bottom can make the waste liquid in mixing drum 6 be drained as much as possible, reduces waste liquid residue.If waste liquid outlet 16 position is higher, may cause part of waste liquid to be unable to be discharged completely, long-term accumulation can affect the composition and performance of dye liquor, even may cause corrosion to equipment.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A uniform flow dyeing machine for knitted fabric production, characterized in that: include: A dyeing drum (1), wherein the dyeing drum (1) has a dyeing space (2) and a plurality of cloth inlets and outlets (3) connected to the dyeing drum (1), a plurality of dye liquid inlets (4) and a plurality of dye liquid outlets (5), wherein the plurality of dye liquid outlets (5) are located at the bottom of the dyeing drum (1), and the dyeing space (2) is used to accommodate cloth to be dyed and dye it; A mixing cylinder (6) is arranged on one side of the dyeing cylinder (1), the mixing cylinder (6) is connected to the dye liquid outlet (5), and a plurality of the mixing cylinders (6) are used to collect and mix the dyes flowing out of the dye liquid outlet (5); A mixing shaft (7) is rotatably disposed in the mixing barrel (6), and the mixing shaft (7) is used to stir the dye in the mixing barrel (6); There are a plurality of mixing pumps (8) connected to the mixing barrel (6), and the mixing pumps (8) are used to pump out the dye in the mixing barrel (6); A heat exchanger (9) is connected at one end to the outlet of the mixing pump (8) and at the other end to the dye liquor inlet (4). The heat exchanger (9) is used to heat the dye.

2. A uniform flow dyeing machine for knitted fabric production according to claim 1, characterized in that: The mixing cylinder (6) has a mixing space (10) therein and further comprises: A turbulence plate (11) is arranged in the mixing barrel (6), and the turbulence plate (11) divides the mixing space (10).

3. A uniform flow dyeing machine for knitted fabric production according to claim 2, characterized in that: The turbulent plate (11) is provided with a plurality of flow holes (12), and the plurality of flow holes (12) are used to disrupt the flow of the dye solution.

4. A uniform flow dyeing machine for knitted fabric production according to claim 2, characterized in that: Also includes: A spiral mixing plate (13) is arranged on the mixing shaft (7), and the spiral mixing plate (13) is used to stir the dye.

5. A uniform flow dyeing machine for knitted fabric production according to claim 4, characterized in that: The turbulence plate (11) is arc-shaped, and the spiral mixing plate (13) abuts against the turbulence plate (11).

6. A uniform flow dyeing machine for knitted fabric production according to claim 1, characterized in that: Also includes: A discharge rack (14) is arranged on one side of the dyeing drum (1) located at the cloth inlet and outlet (3); A feeding shaft (15) is rotatably mounted on the discharge rack (14), and the feeding shaft (15) is used to carry and assist the dyed cloth to leave the dyeing drum (1) through the cloth inlet and outlet (3).

7. The uniform flow dyeing machine for knitted fabric production according to claim 1, characterized in that: The mixing barrel (6) has a waste liquid outlet (16) therein, and the waste liquid outlet (16) is located at the bottom of the mixing barrel (6).

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