Dyeing machine for polyester fabric

Abstract

The application relates to a polyester fabric water- and energy-saving dyeing machine and relates to the technical field of printing and dyeing equipment, which comprises a dyeing machine body, a dyeing cavity is formed in the dyeing machine body, a dyeing mechanism is arranged in the dyeing machine body, an inlet is formed in one end of the dyeing machine body and communicates with the dyeing cavity, and a preheating mechanism for preheating the cloth at the inlet is arranged on the dyeing machine body. The dyeing liquid temporary storage box can receive the high-temperature dyeing liquid dripping from the cloth after dyeing, so that the dyeing liquid is prevented from directly flowing away. The preheating pipe introduces the external cold water and passes through the dyeing liquid temporary storage box, the cold water is heated by using the waste heat of the high-temperature dyeing liquid, the heated hot water is transported to the inlet, the cloth about to enter the dyeing cavity is preheated, an independent heating device does not need to be additionally arranged, the equipment manufacturing cost and assembly complexity are reduced, the waste heat of the dyeing liquid is recycled, energy consumption is reduced, and the energy-saving and environment-friendly concept is met.

Description

Technical Field

[0001] This application relates to the technical field of dyeing and printing equipment, and in particular to a water-saving and energy-saving dyeing machine for polyester fabrics. Background Technology

[0002] A dyeing machine is an industrial device specifically designed to uniformly attach dyes or pigments to the surface of textiles, fibers, yarns, fabrics, and other materials to achieve color imparting, pattern rendering, or functional modification. Its core function is to precisely control process parameters such as temperature, humidity, pressure, dye concentration, and reaction time to ensure that the dye undergoes physical adsorption or chemical bonding with the material being dyed, ultimately achieving a stable, uniform dyeing effect that meets quality standards. It is widely used in the textile printing and dyeing industry and has also extended to the coloring of non-textile materials such as leather, paper, and metals.

[0003] In related technologies, reference can be made to Chinese utility model patent CN210177145U, which discloses a high-efficiency weaving and dyeing machine, relating to the field of textile processing machinery technology, including a base plate; a mounting frame; the mounting frame is disposed on the base plate, and a fabric roll roller is mounted on the mounting frame; a fabric preheating and dehumidification mechanism, disposed on the base plate on one side of the mounting frame, and used to preheat and remove dust from the fabric released from the fabric roll roller before dyeing; and a fabric dyeing mechanism, disposed on the base plate on the side of the fabric preheating and dehumidification mechanism away from the fabric roll roller, used to dye the preheated and dust-removed fabric. However, the dyeing machines mentioned above require a separate preheating mechanism to preheat the fabric during actual operation. The manufacturing cost and assembly complexity of the equipment are high, and the energy consumption during operation is also large, which does not conform to the concept of environmentally friendly and energy-saving production. Utility Model Content

[0004] To address the problems of high manufacturing costs, complex assembly, and high energy consumption caused by the need for a separate preheating mechanism in existing dyeing machines, this application provides a water-saving and energy-efficient dyeing machine for polyester fabrics.

[0005] This application provides a water-saving and energy-efficient dyeing machine for polyester fabrics, which adopts the following technical solution: A water-saving and energy-efficient dyeing machine for polyester fabrics includes a dyeing machine body with a dyeing cavity inside. A dyeing mechanism is installed inside the dyeing machine body. One end of the dyeing machine body has a fabric inlet communicating with the dyeing cavity. Fabric is introduced into the dyeing machine body through the fabric inlet and dyed by the dyeing mechanism. The dyeing machine body is equipped with a preheating mechanism for preheating the fabric at the fabric inlet. The preheating mechanism includes: A dye liquor storage box is installed inside the dyeing cavity of the dyeing machine body. The top of the dye liquor storage box has a liquid inlet hole, through which the dye liquor flowing from the fabric is collected. A preheating pipe is installed on the body of the dyeing machine. One end of the preheating pipe is located outside the dyeing machine and is connected to a water source. The other end of the preheating pipe extends into the dyeing cavity of the dyeing machine body and passes horizontally through the dye liquor storage box before extending to the fabric inlet. A drain assembly is installed on the body of the dyeing machine and is used to drain the dye solution from the dye solution storage tank.

[0006] By adopting the above technical solution, the dye liquor storage box can receive the high-temperature dye liquor dripping from the fabric after dyeing, avoiding direct loss of dye liquor; the preheating pipe introduces cold water from the outside and passes through the dye liquor storage box, using the residual heat of the high-temperature dye liquor to heat the cold water, and the heated hot water is transported to the fabric inlet to preheat the fabric that is about to enter the dyeing cavity. There is no need to set up an additional independent heating device, which reduces the equipment manufacturing cost and assembly complexity, realizes the recovery and utilization of residual heat of dye liquor, reduces energy consumption, and conforms to the concept of environmental protection and energy conservation.

[0007] Optionally, the staining mechanism includes: A dyeing barrel is located on one side of the dyeing machine body and contains dye liquor. An overflow pipe is installed inside the dyeing machine, through which the fabric is dyed; A liquid-passing pipe is provided, with its two ends connected to a dyeing vat and an overflow pipe, respectively. A main pump and a heat exchanger are installed on the liquid-passing pipe.

[0008] By adopting the above technical solution, the dyeing barrel provides a stable source of dye liquor for the dyeing process; the main pump can drive the dye liquor in the dyeing barrel to be transported to the overflow pipe through the liquid pipe, and the heat exchanger can adjust the temperature of the dye liquor during the transportation process to ensure that the dye liquor reaches the preset dyeing temperature; when the fabric passes through the overflow pipe, it can fully contact the continuously flowing constant temperature dye liquor to ensure dyeing uniformity and dyeing quality, while the dye liquor circulation design also reduces dye liquor waste.

[0009] Optionally, the dyeing machine body is equipped with a return pipe, the outer wall of the dyeing barrel is equipped with a water tank, the water tank is equipped with a water pipe communicating with the inside of the dyeing barrel, the water pipe is equipped with a one-way valve, one end of the return pipe is connected to the water tank and communicates with the inside of the water tank, and the other end of the return pipe is connected to the preheating pipe and communicates with the inside of the preheating pipe.

[0010] By adopting the above technical solution, the hot water that has completed the preheating of the fabric in the preheating pipe can be transported to the water tank for temporary storage through the return pipe. The warm water in the water tank then enters the dyeing barrel through the water pipe to replenish the dye liquor in the dyeing barrel or help maintain the temperature of the dye liquor. The one-way valve can prevent the dye liquor in the dyeing barrel from flowing back into the water tank through the water pipe, avoiding the dye liquor from contaminating the water in the water tank. This realizes the secondary utilization of waste heat from the hot water and further improves the water-saving and energy-saving effect.

[0011] Optionally, the drainage assembly includes: A drain pipe is installed on the body of the dyeing machine. One end of the drain pipe is connected to the bottom of the dye liquor storage tank, and the other end of the drain pipe extends to the outside of the dyeing machine. A control valve is installed on the drain pipe.

[0012] By adopting the above technical solution, when the dye liquor in the temporary storage tank reaches a certain amount or the dye liquor deteriorates due to long-term storage, the operator can open the control valve to discharge the dye liquor in the temporary storage tank to the outside of the machine through the drain pipe (for subsequent recycling or discharge in compliance with standards). The timing and speed of the drain can be flexibly controlled by the control valve, which is convenient to operate and can prevent the dye liquor from accumulating excessively in the temporary storage tank.

[0013] Optionally, the dye solution storage box is equipped with a filter plate, which is horizontally positioned below the inlet hole.

[0014] By adopting the above technical solution, the filter plate can filter the dye liquor entering the dye liquor storage tank through the inlet hole, intercept fabric fibers, impurities, etc. that may be contained in the dye liquor, prevent impurities from clogging the preheating tube or causing pipe blockage when discharged with the dye liquor, ensure the normal liquid flow of the preheating tube and the smooth operation of the draining component, and also improve the convenience of subsequent dye liquor recycling and treatment.

[0015] Optionally, the portion of the preheating tube located inside the dye liquor storage tank is arranged in a spiral shape.

[0016] By adopting the above technical solution, the spiral structure can significantly increase the contact area between the preheating tube and the high-temperature dye liquor in the dye liquor storage box, improve the heat exchange efficiency, and enable the water source in the preheating tube to reach the preset preheating temperature more quickly, thereby enhancing the preheating effect on the fabric at the inlet and ensuring the temperature stability of the fabric before dyeing.

[0017] Optionally, a liquid level observation window is provided on the outer wall of the dyeing machine body, the liquid level observation window is aligned with the side wall of the dye liquor storage tank, and the liquid level observation window is marked with scale lines.

[0018] By adopting the above technical solution, operators can intuitively view the dye liquor level in the dye liquor storage tank through the liquid level observation window, which facilitates timely discharge of dye liquor through the drain component or determination of whether the filter plate needs to be cleaned, thus improving the convenience of equipment operation.

[0019] Optionally, a cleaning port is provided on the side wall of the dye storage box, and a sealing cover is detachably connected to the cleaning port by bolts. A rubber sealing ring is provided at the connection between the sealing cover and the cleaning port.

[0020] By adopting the above technical solution, when filter impurities accumulate in the dye liquor storage tank or internal maintenance is required, the removable sealing cover can be cleaned directly through the cleaning port without disassembling the entire dye liquor storage tank, reducing maintenance difficulty; the rubber sealing ring can ensure the sealing of the cleaning port and prevent dye liquor from leaking from the cleaning port.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. The dye liquor storage tank can collect the high-temperature dye liquor dripping from the fabric after dyeing, preventing the dye liquor from being directly lost. The preheating pipe introduces cold water from the outside and passes through the dye liquor storage tank. The residual heat of the high-temperature dye liquor is used to heat the cold water. The heated hot water is then transported to the fabric inlet to preheat the fabric that is about to enter the dyeing cavity. There is no need to set up an additional independent heating device, which reduces the manufacturing cost and assembly complexity of the equipment, and realizes the recovery and utilization of the residual heat of the dye liquor, reducing energy consumption and conforming to the concept of environmental protection and energy conservation. 2. The hot water used to preheat the fabric through the preheating pipe can be transported to the water tank for temporary storage through the return pipe. The warm water in the water tank then enters the dyeing barrel through the water pipe to replenish the dye liquor in the dyeing barrel or help maintain the temperature of the dye liquor. The one-way valve can prevent the dye liquor in the dyeing barrel from flowing back into the water tank through the water pipe, avoiding the dye liquor from contaminating the water in the water tank. This realizes the secondary utilization of the waste heat of the hot water and further improves the water-saving and energy-saving effect. 3. The dye liquor level in the dye liquor storage tank can be directly viewed through the liquid level observation window, which facilitates timely discharge of dye liquor through the drain component or determination of whether the filter plate needs to be cleaned, thus improving the ease of equipment operation. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of this application; Figure 2 This is a structural schematic diagram of the dyeing mechanism and the preheating mechanism in this application, in which the side wall of the dyeing machine body is shown in cross section.

[0023] Reference numerals: 1. Dyeing machine body; 11. Dyeing cavity; 12. Fabric inlet; 13. Liquid level observation window; 2. Dyeing mechanism; 21. Dyeing barrel; 22. Overflow pipe; 23. Liquid passage pipe; 24. Main pump; 25. Heat exchanger; 3. Preheating mechanism; 31. Dye liquor storage tank; 32. Preheating pipe; 33. Drainage assembly; 34. Filter plate; 35. Sealing cover; 36. Drainage pipe; 37. Control valve; 38. Return pipe; 39. Water tank. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1 - Appendix Figure 2 This application will be described in further detail.

[0025] This application discloses a water-saving and energy-efficient dyeing machine for polyester fabrics.

[0026] Reference Figure 1 The water-saving and energy-efficient dyeing machine for polyester fabrics includes a dyeing machine body 1, with a dyeing cavity 11 inside the dyeing machine body 1. A fabric inlet 12, communicating with the dyeing cavity 11, is located at one end of the dyeing machine body 1. A dyeing mechanism 2 is installed inside the dyeing machine body 1. The fabric is introduced into the dyeing machine body 1 through the fabric inlet 12 and then dyed by the dyeing mechanism 2. A preheating mechanism 3 is located at the fabric inlet 12 inside the dyeing machine body 1 to preheat the fabric at the fabric inlet 12.

[0027] Reference Figure 1 and Figure 2 The dyeing mechanism 2 includes a dyeing tank 21, an overflow pipe 22, and a liquid conveying pipe 23. The dyeing tank 21 is a cylindrical tank made of stainless steel and is fixed to the ground next to the dyeing machine body 1. The dyeing tank 21 stores a special dye solution for polyester fabrics. The overflow pipe 22 is fixed in the middle of the dyeing cavity 11, and the fabric can be inserted through the top opening of the overflow pipe 22 and exited through the bottom. The liquid conveying pipe 23 is a PVC pipe, one end of which is connected to the bottom of the dyeing tank 21, and the other end of which is connected to one end of the overflow pipe 22. A main pump 24 and a heat exchanger 25 are connected in series on the liquid conveying pipe 23.

[0028] Reference Figure 2 The dyeing tank 21 provides a stable source of dye liquor for the dyeing process. The main pump 24 drives the dye liquor in the dyeing tank 21 to be transported to the overflow pipe 22 through the liquid pipe 23. The heat exchanger 25 can regulate the temperature of the dye liquor during the transportation process to ensure that the dye liquor reaches the preset dyeing temperature. When the fabric passes through the overflow pipe 22, it can fully contact the continuously flowing, constant-temperature dye liquor, ensuring dyeing uniformity and quality. At the same time, the dye liquor circulation design also reduces dye liquor waste.

[0029] Reference Figure 1 and Figure 2 The preheating mechanism 3 includes a dye liquor storage tank 31, a preheating pipe 32, and a drain assembly 33. The dye liquor storage tank 31 is a cuboid structure and is fixedly installed at the bottom of the dyeing cavity 11. A rectangular inlet hole is provided at the top of the dye liquor storage tank 31. A filter plate 34 is horizontally welded inside the dye liquor storage tank 31. The filter plate 34 is located directly below the inlet hole. A rectangular cleaning port is provided on the front side wall of the dye liquor storage tank 31. A sealing cover 35 is detachably connected to the cleaning port by four bolts, and a rubber sealing ring is attached to the inner edge of the sealing cover 35.

[0030] Reference Figure 1 and Figure 2 The preheating pipe 32 is made of copper. One end of the preheating pipe 32 extends out of the dyeing machine body 1 and is connected to the external cold water pipe through a flange. The other end of the preheating pipe 32 passes through the side wall of the dyeing machine body 1, extends into the dyeing cavity 11, and passes horizontally through the dye liquor storage box 31. The part of the preheating pipe 32 located in the dye liquor storage box 31 is arranged in a spiral shape. Finally, the output end of the preheating pipe 32 extends to the fabric inlet 12.

[0031] Reference Figure 1 and Figure 2 The drain assembly 33 is installed on the dyeing machine body 1 and is used to drain the dye solution in the dye solution storage tank 31. The drain assembly 33 includes a drain pipe 36 and a control valve 37. One end of the drain pipe 36 is welded to the center of the bottom of the dye solution storage tank 31 and communicates with the inside of the storage tank. The other end of the drain pipe 36 extends through the bottom of the dyeing machine body 1 to the outside of the machine body. The control valve 37 is a manual ball valve, and the control valve 37 is fixed to the part of the drain pipe 36 located outside the machine body.

[0032] Reference Figure 1 and Figure 2 A return pipe 38 is fixed to the side wall of the dyeing machine body 1, and a water tank 39 is welded to the outer wall of the dyeing barrel 21. A water pipe is connected to the bottom of the water tank 39, and the other end of the water pipe is connected to the top of the dyeing barrel 21. A one-way valve is installed on the water pipe. One end of the return pipe 38 is connected to the part of the preheating pipe 32 near the fabric inlet 12, and the other end is connected to the top of the water tank 39.

[0033] Reference Figure 2 The hot water that has preheated the fabric in the preheating pipe 32 can be transported to the water tank 39 for temporary storage through the return pipe 38. The warm water in the water tank 39 then enters the dyeing barrel 21 through the water pipe to replenish the dye liquor in the dyeing barrel 21 or help maintain the temperature of the dye liquor. The one-way valve can prevent the dye liquor in the dyeing barrel 21 from flowing back to the water tank 39 through the water pipe, avoiding the dye liquor from contaminating the water in the water tank 39. This realizes the secondary utilization of waste heat from the hot water and further improves the water-saving and energy-saving effect.

[0034] Reference Figure 1 and Figure 2 A liquid level observation window 13 is fixedly installed on the outer wall of the dyeing machine body 1, aligned with the side wall of the dye liquor storage tank 31. The observation window 13 is marked with graduation lines. Operators can visually observe the dye liquor level in the dye liquor storage tank 31 through the observation window 13, facilitating timely discharge of the dye liquor via the drain assembly 33 or determining whether the filter plate 34 needs cleaning. When the filter plate 34 needs cleaning, the removable sealing cover 35 can be used for direct cleaning through the cleaning port, without disassembling the entire dye liquor storage tank 31, making it convenient and practical.

[0035] The working principle of this application embodiment is as follows: Dyeing preparation: Start the main pump 24 and heat exchanger 25. The main pump 24 draws the dye solution in the dyeing tank 21 into the liquid passage pipe 23. The heat exchanger 25 heats the dye solution to the preset dyeing temperature. Then the dye solution enters the overflow pipe 22 and overflows from the opening of the overflow pipe 22 to form a stable dye solution environment. Fabric preheating and dyeing: Cold water from the outside enters the spiral section of the dye liquor storage tank 31 through the preheating pipe 32, absorbing the residual heat of the high-temperature dye liquor (dripping from the dyed fabric) in the storage tank. The hot water formed by heating the cold water is transported to the fabric inlet 12 through the preheating pipe 32 to preheat the polyester fabric that is about to enter. The preheated fabric passes through the overflow pipe 22 and comes into full contact with the constant temperature dye liquor to complete the dyeing process. Waste heat and hot water recovery: After dyeing, the fabric passes through the overflow pipe 22, and the high-temperature dye liquor dripping from its surface enters the temporary storage tank through the inlet hole of the dye liquor storage tank 31. After being filtered by the filter plate 34, it is retained; the hot water that has been preheated in the preheating pipe 32 flows into the water tank 39 through the return pipe 38. The warm water in the water tank 39 enters the dyeing barrel 21 through the water pipe to help maintain the temperature of the dye liquor or to replenish the water. Maintenance and drainage: Operators can check the liquid level in the dye storage tank 31 through the liquid level observation window 13. When the liquid level reaches the target scale line, the control valve 37 is opened to drain the dye in the storage tank. If the liquid level is found to rise too quickly, the sealing cover 35 can be removed and the impurities on the filter plate 34 can be cleaned through the cleaning port.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A water-saving and energy-efficient dyeing machine for polyester fabrics, characterized in that: The dyeing machine includes a dyeing machine body (1), which has a dyeing cavity (11) inside. A dyeing mechanism (2) is installed inside the dyeing machine body (1). One end of the dyeing machine body (1) has a fabric inlet (12) communicating with the dyeing cavity (11). Fabric is introduced into the dyeing machine body (1) through the fabric inlet (12) and dyed by the dyeing mechanism (2). The dyeing machine body (1) is equipped with a preheating mechanism (3) for preheating the fabric at the fabric inlet (12). The preheating mechanism (3) includes: A dye liquor storage box (31) is set in the dyeing cavity (11) of the dyeing machine body (1). The top of the dye liquor storage box (31) is provided with a liquid inlet hole. The dye liquor storage box (31) receives the dye liquor flowing on the fabric through the liquid inlet hole. A preheating pipe (32) is installed on the body (1) of the dyeing machine. One end of the preheating pipe (32) is located outside the body (1) of the dyeing machine and is connected to the water source. The other end of the preheating pipe (32) extends into the dyeing cavity (11) of the body (1) of the dyeing machine and passes horizontally through the dye liquor storage box (31) before extending to the fabric inlet (12). Drainage assembly (33) is installed on the body (1) of the dyeing machine and is used to drain the dye solution in the dye solution storage tank (31).

2. The water-saving and energy-saving dyeing machine for polyester fabrics according to claim 1, characterized in that: The dyeing mechanism (2) includes: A dyeing barrel (21) is located on one side of the dyeing machine body (1), and dyeing liquid is stored in the dyeing barrel (21); Overflow pipe (22), the overflow pipe (22) is installed inside the dyeing machine body (1), and the fabric passes through the overflow pipe (22) for dyeing; Liquid passage pipe (23), the two ends of which are connected to dyeing barrel (21) and overflow pipe (22) respectively, and a main pump (24) and heat exchanger (25) are installed on the liquid passage pipe (23).

3. The water-saving and energy-saving dyeing machine for polyester fabrics according to claim 2, characterized in that: The dyeing machine body (1) is provided with a return pipe (38), and a water tank (39) is provided on the outer wall of the dyeing barrel (21). A water pipe communicating with the inside of the dyeing barrel (21) is provided on the water tank (39), and a one-way valve is provided on the water pipe. One end of the return pipe (38) is connected to the water tank (39) and communicates with the inside of the water tank (39), and the other end of the return pipe (38) is connected to the preheating pipe (32) and communicates with the inside of the preheating pipe (32).

4. The water-saving and energy-saving dyeing machine for polyester fabrics according to claim 1, characterized in that: The drainage assembly (33) includes: Drainage pipe (36) is installed on the body (1) of the dyeing machine. One end of the drainage pipe (36) is connected to the bottom of the dyeing solution storage box (31), and the other end of the drainage pipe (36) extends to the outside of the body (1) of the dyeing machine. A control valve (37) is provided on the drain pipe (36).

5. The water-saving and energy-saving dyeing machine for polyester fabrics according to claim 1, characterized in that: The dye solution storage box (31) is equipped with a filter plate (34), which is horizontally positioned below the inlet hole.

6. The water-saving and energy-saving dyeing machine for polyester fabrics according to claim 1, characterized in that: The portion of the preheating tube (32) located inside the dye liquor storage box (31) is arranged in a spiral shape.

7. The water-saving and energy-saving dyeing machine for polyester fabrics according to claim 1, characterized in that: A liquid level observation window (13) is provided on the outer wall of the dyeing machine body (1). The liquid level observation window (13) is aligned with the side wall of the dye liquor storage tank (31). The liquid level observation window (13) is marked with scale lines.

8. The water-saving and energy-saving dyeing machine for polyester fabrics according to claim 1, characterized in that: A cleaning port is provided on the side wall of the dye storage box (31). A sealing cover (35) is detachably connected to the cleaning port by bolts. A rubber sealing ring is provided at the connection between the sealing cover (35) and the cleaning port.

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