A dyeing pre-treatment scouring and bleaching system and process for uniform coloring of dark fabric

Abstract

This invention discloses a pre-dyeing treatment system and process for uniformly coloring dark-colored fabrics, specifically relating to the field of fabric production technology. The system includes a workbench with a desizing tank, a scouring tank, and a bleaching tank installed sequentially from left to right on its surface. Fabric passes through these tanks in sequence. The invention utilizes a mixing mechanism to drive the desizing solution to mix and flow within the desizing tank. With the assistance of a beating mechanism, the fabric is continuously patted during rotation, accelerating the removal of residual sizing solution. A pneumatic mechanism delivers gas evenly to the desizing tank via a gas supply component, forcing the desizing solution to agitate and mix. This allows the desizing solution to penetrate the fabric under the pressure of the gas, resulting in more stable contact between the desizing solution and the fabric. The pneumatic mechanism achieves multiple contact methods between the fabric and the desizing solution, effectively improving desizing efficiency.

Description

Technical Field

[0001] This invention relates to the field of fabric production technology, specifically to a dyeing pretreatment scouring and bleaching system and process for uniformly coloring dark fabrics. Background Technology

[0002] Before weaving, the warp yarns of cotton fabrics are usually sized. After being soaked in sizing solution, the warp yarns are dried, which causes the fibers in the yarn to stick together and form a thin film on the yarn surface to cover the fuzz on the surface of the warp yarns and improve the abrasion resistance of the warp yarns, making it easier to weave. However, the sizing on cotton fabrics will affect the hand feel and the normal progress of subsequent printing and dyeing processes. Therefore, the sizing on the warp yarns of cotton fabrics must be removed before printing and dyeing. This process is called desizing.

[0003] In order to make cotton fabrics have a certain degree of water absorption, which is conducive to the adsorption and diffusion of dyes during the printing and dyeing process, after desizing, they must be scouring to remove most of the natural impurities in the cotton fibers. After scouring, the impurities in the cotton fabrics are significantly reduced and the water absorption is greatly improved. However, since there are still natural pigments on the fibers, their appearance is not white enough. Except for a few varieties, they generally need to be bleached, otherwise it will affect the brightness of the dyeing or printing colors.

[0004] Referring to the one-bath desizing, scouring and bleaching system and method for short-process pretreatment of pure cotton woven fabric disclosed in patent application CN113914045A, this one-bath desizing, scouring and bleaching system achieves the mixing of desizing liquid by the stirring paddle through the setting of the reciprocating stirring mechanism, which is conducive to the thorough desizing of the desizing liquid on the fabric surface. Moreover, through the reciprocating motion of the stirring wheel on the front and back sides, the stirring wheel drives the stirring paddle and brush to perform mobile cleaning of the fabric surface, which meets the cleaning needs of fabric surfaces of different widths and greatly improves the efficiency of fabric desizing.

[0005] Although the aforementioned one-bath desizing and bleaching system can complete the desizing treatment of fabrics, its desizing method for fabrics is relatively simple. It only relies on a reciprocating stirring mechanism to stir and mix the desizing solution and bring it into contact with the fabric, which cannot allow the desizing solution to penetrate into the fabric well. As a result, the desizing solution cannot make good contact with the fabric to complete the desizing process, which can easily lead to a decrease in desizing effect, unsatisfactory desizing efficiency, increased desizing cycle, and increased rework volume. Summary of the Invention

[0006] The purpose of this invention is to provide a dyeing pretreatment scouring and bleaching system and process for uniformly coloring dark fabrics, in order to solve the above-mentioned technical problems.

[0007] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution.

[0008] This invention relates to a pre-dyeing treatment system for uniformly coloring dark-colored fabrics, comprising a workbench. On the upper surface of the workbench, from left to right, are sequentially installed a desizing tank, a scouring tank, and a bleaching tank. Fabric passes through each of these tanks sequentially. A splined shaft is rotatably mounted inside the desizing tank. A geared motor is mounted on one side of the desizing tank via a bracket, and its output is connected to the splined shaft. A mixing mechanism is mounted on the outside of the splined shaft. This mixing mechanism mixes and stirs the desizing solution in the desizing tank and cleans the fabric. Multiple beating mechanisms are added to the mixing mechanism, and these mechanisms work in conjunction with the mixing mechanism to actively beate and clean the fabric. A pneumatic mechanism is also installed on the mixing mechanism. This pneumatic mechanism works in conjunction with the mixing mechanism to desizing the fabric. The pneumatic mechanism drives the mixing mechanism to move back and forth on the splined shaft and uniformly delivers gas into the desizing tank to ensure thorough mixing and contact between the desizing solution and the fabric.

[0009] Furthermore, the mixing mechanism includes a spline sleeve that is slidably fitted onto the spline shaft and can move back and forth on the spline shaft. Multiple stirring elements are arranged in a circular array on the sidewalls around the spline sleeve, and strip brushes can be detachably installed on each of the multiple stirring elements.

[0010] Furthermore, the pneumatic mechanism includes a main pipe installed on one side of the deslurry tank via a bracket, a high-pressure air pipe connected to one side of the main pipe, and a No. 1 pipe and a No. 2 pipe connected to both ends of the main pipe, respectively. A reciprocating assembly is installed on one side of the deslurry tank, and the reciprocating assembly is connected to the No. 1 pipe via a pipe. The reciprocating assembly is used to push the spline sleeve to move back and forth on the spline shaft. An air supply assembly is installed concentrically with the spline shaft on one side inside the deslurry tank, and the air supply assembly is connected to the No. 2 pipe via a pipe. The air supply assembly is used to uniformly deliver gas into the deslurry tank.

[0011] Furthermore, the air supply assembly includes an annular cavity installed on one side of the deslurry tank. The front end of the annular cavity is open. An end cap is rotatably installed at the open front end of the annular cavity. A blocking block is installed at the top of the annular cavity. An air inlet pipe is connected to one side of the annular cavity. The air inlet pipe is connected to the second pipe through a pipe. Multiple first air supply pipes are arranged in a circular array on the end cap, with the number of the mixing components matching the number of first air supply pipes. Multiple air chambers are arranged in a circular array outside the spline sleeve through a bracket. Multiple nozzles are evenly connected to the top of the multiple air chambers. Second air supply pipes are connected to one side of each of the multiple air chambers. The multiple second air supply pipes are connected to the multiple first air supply pipes through spring tubes.

[0012] Furthermore, guide seats extend from one side of each of the multiple air chambers, and synchronizing rods slide through each of the multiple guide seats. One end of each of the multiple synchronizing rods is detachably and fixedly connected to the end cover.

[0013] Furthermore, the reciprocating assembly includes a circular cavity mounted on one side of the deslurry tank via a bracket. The bottom of the circular cavity is open, and a bottom cover is detachably and sealed at the bottom of the cavity via bolts. An impeller is concentrically mounted inside the circular cavity, and the top of the impeller rotates through the center of the top of the circular cavity. A No. 3 air pipe is connected to and installed on one side of the circular cavity. The No. 3 air pipe is connected to the No. 1 pipe via a pipeline. A No. 4 air pipe is connected to and installed on the side of the No. 3 air pipe on the circular cavity. A turntable is concentrically mounted on the top of the impeller, and a transmission arm is rotatably mounted on the upper surface of the turntable, offset from its center.

[0014] Furthermore, a ring track is concentrically fixed at one end of the spline sleeve, and a linkage arm is slidably installed on the ring track. A limiting rod is installed on one side of the inner wall of the deslurry tank. The limiting rod slides through the linkage arm, and the tail of the transmission arm is hinged to one side of the linkage arm. The transmission arm and the linkage arm work together to push the spline sleeve to move back and forth on the spline shaft.

[0015] Furthermore, each of the multiple patting mechanisms includes multiple sliding frames, which are installed side by side at intervals on one side of the strip brush. A counterweight is slidably installed in each of the multiple sliding frames, and a moving rod is installed on the top of each of the multiple counterweights. The top of the moving rod corresponds to the sliding frame, and a patting rod is installed on the top of the moving rod in the multiple sliding frames. The patting action on the fabric is completed by the patting rod.

[0016] Furthermore, a return spring is fitted on the outside of each of the multiple moving rods, and the return spring is located between the counterweight and the top of the sliding frame. The return spring pushes the counterweight to retract into the sliding frame so that the striking rod does not contact the fabric.

[0017] This invention also provides a pre-dyeing treatment process for uniformly coloring dark-colored fabrics, which specifically includes the following steps:

[0018] Step 1: First, add desizing solution to the desizing tank and pass the fabric through the desizing tank to ensure it is in full contact with the desizing solution to complete the desizing process;

[0019] Step 2: The mixing mechanism drives the desizing liquid to mix and flow in the desizing tank, so that the desizing liquid comes into full contact with the fabric. With the help of the beating mechanism, the fabric is continuously beated by the beating mechanism during rotation, which accelerates the removal of residual sizing liquid from the fabric.

[0020] Step 3: With the help of the pneumatic mechanism, one gas stream is evenly sprayed into the desizing tank through the gas supply component, forcing the desizing liquid to be agitated and mixed, so that the desizing liquid is pushed into the fabric by the gas, making the contact between the desizing liquid and the fabric more stable. The other gas stream enters the reciprocating component, which pushes the mixing mechanism to slide back and forth on the spline shaft, increasing the cleaning range of the mixing mechanism.

[0021] Step 4: Then add scouring liquid into the scouring tank and introduce the fabric drawn out from the desizing tank into the scouring tank for high-temperature scouring.

[0022] Step 5: Finally, add bleach to the bleaching tank and introduce the fabric drawn from the scouring tank into the bleaching tank for bleaching to improve the whiteness of the fabric and facilitate subsequent dyeing.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. The present invention has a mixing mechanism that drives multiple stirring components to rotate, thereby achieving continuous stirring and mixing of the desizing liquid in the desizing tank, so that the desizing liquid can come into contact with the fabric. A strip brush is detachably installed on the stirring component. As the stirring component rotates, the strip brush comes into contact with the fabric to complete the cleaning, which can remove the residual sizing liquid on the surface of the fabric, so that the desizing liquid can quickly enter the fabric.

[0025] 2. The present invention is equipped with a beating mechanism. The reduction motor is started, which drives the counterweight to slide in the sliding frame and compress the return spring, so that the beating rod extends out of the strip brush to contact the fabric. At the same time, the beating rod continuously beats the fabric during rotation, so that the residual sizing liquid on the fabric surface is quickly discharged, and the desizing liquid is stirred, so that the desizing liquid can quickly enter the fabric.

[0026] 3. This invention incorporates an air supply component, utilizing high-pressure gas ejected from the nozzle to propel the desizing liquid in the working area, accelerating the flow rate of the desizing liquid. This allows the desizing liquid to fully contact the fabric and complete the desizing process, enabling the desizing liquid to quickly penetrate the fabric and improving desizing efficiency. Furthermore, the end cap is rotatably connected to the annular cavity, allowing the end cap to work in conjunction with the spline sleeve, preventing motion interference between the spline sleeve and the first air supply pipe during rotation.

[0027] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0028] Figure 1 This is the overall front view of the invention;

[0029] Figure 2 This is a schematic diagram showing the distribution of the desizing tank, boiling tank, and bleaching tank of the present invention;

[0030] Figure 3 This is a schematic diagram of the fabric of the present invention installed in the desizing tank;

[0031] Figure 4 This is a schematic diagram of the internal structure of the desizing tank of the present invention;

[0032] Figure 5This is a schematic diagram of the mixing mechanism of the present invention installed in the desizing tank;

[0033] Figure 6 This is a schematic diagram of the hybrid mechanism of the present invention;

[0034] Figure 7 This is a schematic diagram of the pneumatic mechanism of the present invention;

[0035] Figure 8 This is a schematic diagram showing the distribution of the linkage arm and spline sleeve of the present invention;

[0036] Figure 9 This is a schematic diagram showing the separation of the strip brush and the stirring component according to the present invention;

[0037] Figure 10 This is a schematic diagram of the gas supply component structure of the present invention;

[0038] Figure 11 This is a schematic diagram showing the distribution of the air chambers on the splined sleeve according to the present invention;

[0039] Figure 12 This is a schematic diagram of the guide seat and air cavity distribution of the present invention;

[0040] Figure 13 This is a schematic diagram of the tapping mechanism of the present invention;

[0041] Figure 14 This is a schematic diagram of the internal structure of the circular cavity of the present invention.

[0042] In the diagram: 1. Workbench; 2. Desizing tank; 3. Scouring tank; 4. Bleaching tank; 5. Fabric; 6. Splined shaft; 7. Gear motor; 8. Guide roller; 9. Restricting roller; 10. Heater; 11. Vertical plate; 12. Rotating roller; 13. Splined sleeve; 14. Agitator; 15. Strip brush; 1501. Mounting groove; 1502. Mounting block; 1503. Reinforcing bolt; 16. Main pipe; 17. High-pressure air pipe; 18. Pipe No. 1; 19. Pipe No. 2; 20. Annular cavity; 21. 1. End cap; 22. Blocking block; 23. Air inlet pipe; 24. No. 1 air supply pipe; 25. Air chamber; 26. Nozzle; 27. No. 2 air supply pipe; 28. Guide seat; 29. ​​Synchronizing rod; 30. Circular cavity; 31. Bottom cover; 32. Impeller; 33. No. 3 air pipe; 34. No. 4 air pipe; 35. Turntable; 36. Transmission arm; 37. Circular track; 38. Linkage arm; 39. Limiting rod; 40. Sliding frame; 41. Counterweight; 42. Moving rod; 43. Beating rod; 44. Return spring. Detailed Implementation

[0043] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0044] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0045] Example 1: The present invention provides a technical solution: such as Figures 1-6 and Figure 9 As shown, a pre-dyeing treatment system for uniformly coloring dark fabric includes a workbench 1. A desizing tank 2, a scouring tank 3, and a bleaching tank 4 are sequentially installed from left to right on the upper surface of the workbench 1, with all three tanks having the same dimensions. Fabric 5 passes through each tank sequentially. A splined shaft 6 is rotatably installed inside the desizing tank 2. A geared motor 7 is mounted on one side of the desizing tank 2 via a bracket. The output of the geared motor 7 is connected to the splined shaft 6. A mixing mechanism is sleeved outside the splined shaft 6. Two guide rollers 8 are symmetrically rotatably installed on both sides of the mixing mechanism inside the desizing tank 2. The guide rollers 8 guide the fabric 5 to contact the mixing mechanism. The position of the guide rollers 8 can be freely adjusted up and down as needed. A limiting roller 9 is rotatably installed in the middle of both the scouring tank 3 and the bleaching tank 4. A heater 10 is installed on one side of the scouring tank 3. The heating tank 3 is used to heat the fabric 5. Conveying units for guiding the fabric 5 are installed on both sides of the top of the desizing tank 2, the boiling tank 3, and the bleaching tank 4. Each conveying unit includes two parallel vertical plates 11. Two rotating rollers 12 are rotatably installed between the two vertical plates 11. The fabric 5 is conveyed by the two rotating rollers 12. The mixing mechanism is used to mix and stir the desizing liquid in the desizing tank 2 and to clean the fabric 5. Multiple beating mechanisms are added to the mixing mechanism. The multiple beating mechanisms are linked with the mixing mechanism to actively beat and clean the fabric 5. A pneumatic mechanism is installed on the mixing mechanism. The pneumatic mechanism works with the mixing mechanism to complete the desizing operation of the fabric 5. The pneumatic mechanism is used to drive the mixing mechanism to move back and forth on the spline shaft 6 and to evenly send gas into the desizing tank 2 so that the desizing liquid and the fabric 5 are fully mixed and contacted.

[0046] The mixing mechanism includes a splined sleeve 13, which is slidably fitted onto a splined shaft 6. Power is transmitted to the splined sleeve 13 via the splined shaft 6, and the splined sleeve 13 can move back and forth on the splined shaft 6. Multiple agitators 14 are arranged in a circular array on the side walls of the splined sleeve 13. Strip brushes 15 are detachably mounted on each of the agitators 14. Cleaning is achieved by the strip brushes 15 contacting the cloth 5. Three inwardly recessed features are provided on the top of each agitator 14. Mounting slot 1501, mounting blocks 1502 are inserted into each of the three mounting slots 1501, and the three mounting blocks 1502 are respectively fixedly connected to the bottom of the corresponding strip brush 15. Reinforcing bolts 1503 are slidably inserted on the multiple mixing components 14 at the positions of the three mounting slots 1501. The reinforcing bolts 1503 pass through the mixing components 14, the mounting blocks 1502 and the mounting slots 1501 respectively, and the mounting blocks 1502 are fixed in the mounting slots 1501 by the reinforcing bolts 1503.

[0047] It is worth noting that during mixing: by activating the mixing mechanism, the geared motor 7 is started, which drives the splined shaft 6 to rotate. The splined shaft 6 drives the splined sleeve 13 to rotate, which in turn drives multiple agitators 14 to rotate. This achieves continuous mixing of the desizing liquid in the desizing tank 2, allowing the desizing liquid to come into contact with the fabric 5. A strip brush 15 is detachably installed on the agitator 14. As the agitator 14 rotates, the strip brush 15 comes into contact with the fabric 5 to clean it, removing any residual slurry from the surface of the fabric 5. This allows the desizing liquid to quickly enter the fabric 5. The strip brush 15 can be quickly detached from the agitator 14 via the mounting block 1502, facilitating subsequent replacement and maintenance.

[0048] All electrical components on the pneumatic mechanism, as well as the geared motor 7, heater 10, and other electrical components, are connected to switches via wires, and the switches are electrically connected to controllers. The specific structure of the controllers is not limited.

[0049] Example 2: Based on the pneumatic mechanism provided in Example 1, this example provides a further technical solution for the pneumatic mechanism.

[0050] like Figure 7 , Figure 8 , Figures 10-12 and Figure 14As shown, the pneumatic mechanism includes a main pipe 16 mounted on one side of the deslurry tank 2 via a bracket. A high-pressure air pipe 17 is connected to one side of the main pipe 16. A solenoid valve No. 1 is installed at the end of the high-pressure air pipe 17 to control its opening and closing. A first pipe 18 and a second pipe 19 are connected to both ends of the main pipe 16, and a second solenoid valve No. 2 is installed at the ends of both the first pipe 18 and the second pipe 19 to control their opening and closing. A reciprocating assembly is installed on one side of the deslurry tank 2. The reciprocating assembly is connected to the first pipe 18 via a pipe. The reciprocating assembly is used to push the spline sleeve 13 to move back and forth on the spline shaft 6. An air supply assembly is installed concentrically with the spline shaft 6 on one side inside the deslurry tank 2. The air supply assembly is connected to the second pipe 19 via a pipe. The air supply assembly is used to uniformly deliver gas into the deslurry tank 2.

[0051] In this embodiment of the invention, the air supply assembly includes an annular cavity 20 installed on one side of the deslurry tank 2. The annular cavity 20 is concentrically arranged with the spline shaft 6. The front end of the annular cavity 20 is open. An end cap 21 is rotatably installed at the open front end of the annular cavity 20. A blocking block 22 is installed at the top of the annular cavity 20 to seal the top area inside the annular cavity 20. An air inlet pipe 23 is connected to one side of the annular cavity 20. The air inlet pipe 23 is connected to the second pipe 19 through a pipe. A third solenoid valve is installed at the end of the air inlet pipe 23 to control its opening and closing. The air inlet pipe 23 is connected to the inside of the annular cavity 20. Multiple first air supply pipes 24, the same number as the number of agitators 14, are arranged in a circular array on the end cap 21. All multiple first air supply pipes 24 pass through the end cap 21 and are connected to the inside of the annular cavity 20. Multiple air chambers 25 are arranged in a circular array outside the spline sleeve 13 through a bracket. The multiple air chambers 25 are respectively located in multiple agitators. On one side of the mixing component 14, multiple nozzles 26 are evenly connected to the top of multiple air chambers 25. To prevent the desizing liquid from entering the air chambers 25 in large quantities through the nozzles 26, a one-way valve is installed at the end of the nozzles 26 to control the one-way discharge of gas from the air chambers 25. The working height of the multiple nozzles 26 is lower than the height of the strip brush 15. A second air supply pipe 27 is connected to one side of each of the multiple air chambers 25. The multiple second air supply pipes 27 are connected to multiple first air supply pipes 24 through spring tubes. High-pressure gas is sent into the desizing tank 2 through the multiple nozzles 26 to make the desizing liquid contact the fabric 5. A guide seat 28 extends to one side of each of the multiple air chambers 25. A synchronizing rod 29 is slidably passed through the multiple guide seats 28. One end of each synchronizing rod 29 is detachably fixed to the end cover 21. The guide seat 28 and the synchronizing rod 29 cooperate to guide and restrict the forward and backward movement of the spline sleeve 13. A limiting head is installed at the end of each synchronizing rod 29 away from the end cover 21.

[0052] It is worth noting that during pneumatic mixing: An air supply assembly is provided, and the second pipe 19 is opened to introduce gas into the air inlet pipe 23. After entering the annular cavity 20, the gas enters multiple first air supply pipes 24, and then is delivered into the air chamber 25 via the second air supply pipe 27. Finally, the gas is sprayed out through the nozzle 26. In conjunction with the mixing mechanism, while the strip brush 15 cleans the fabric 5, the gas sprayed out through the nozzle 26 pushes the desizing liquid, allowing it to quickly and effectively penetrate the fabric. Within fabric 5, high-pressure gas ejected from nozzle 26 propels the desizing liquid in the working area, accelerating its flow and ensuring sufficient contact between the liquid and fabric 5 to complete the desizing process. This allows the desizing liquid to quickly penetrate the fabric 5, improving desizing efficiency. Furthermore, end cap 21 is rotatably connected to annular cavity 20, enabling it to move in conjunction with spline sleeve 13. This prevents interference between spline sleeve 13 and air delivery pipe 24 during rotation. The spline sleeve 13 is connected to the No. 2 air supply pipe 27 by a spring tube, which allows the spline sleeve 13 to avoid obstacles when moving back and forth, ensuring the stable operation of the equipment. At the same time, under the guidance of the guide seat 28 and the synchronizing rod 29, the spline sleeve 13 and the end cover 21 are connected as one unit, making the air supply of the No. 1 air supply pipe 24 and the No. 2 air supply pipe 27 more stable. The synchronizing rod 29 can slide on the guide seat 28, making the spline sleeve 13 more stable when sliding back and forth, avoiding motion interference. Furthermore, the top area of ​​the annular cavity 20 is blocked by the blocking block 22, which blocks the top of the annular cavity 20 during gas delivery, restricting the gas flow. This prevents the air chamber 25 located in the area of ​​the blocking block 22 from supplying gas, thus preventing the gas from being ineffectively discharged from the top air chamber 25. Since the gas ejected from the top air chamber 25 does not come into contact with the fabric, there will be a problem of ineffective gas discharge. By blocking the top area of ​​the annular cavity 20 by the blocking block 22, the problem of ineffective gas discharge from the top can be effectively avoided.

[0053] In this embodiment of the invention, the reciprocating assembly includes a circular cavity 30 mounted on one side of the deslurry tank 2 via a bracket. The bottom of the circular cavity 30 is open, and a bottom cover 31 is detachably and sealed at the bottom of the circular cavity 30 by bolts. An impeller 32 is concentrically mounted inside the circular cavity 30, with its top rotating through the center of the top of the circular cavity 30. A third air pipe 33 is connected to one side of the circular cavity 30 and is connected to a first pipe 18 via a pipe. A fourth air pipe 34 is connected to one side of the third air pipe 33 on the circular cavity 30. A fourth solenoid valve is installed at the ends of both the third and fourth air pipes 33 to control their opening and closing. A turntable 35 is concentrically mounted on the top of the impeller 32, and a surface is mounted on the turntable 35. A transmission arm 36 is mounted off-center from its center. An annular track 37 is fixedly mounted concentrically at one end of the splined sleeve 13. A linkage arm 38 is slidably mounted on the annular track 37. A limiting rod 39 is mounted on one side of the inner wall of the deslurry tank 2. The limiting rod 39 slides through the linkage arm 38. The linkage arm 38 completes the back-and-forth sliding restriction under the guidance of the limiting rod 39. Protrusions are mounted on both sides of the limiting rod 39. A groove is opened on the linkage arm 38 to cooperate with the protrusions. The linkage arm 38 slides back and forth under the guidance of the limiting rod 39 through the protrusions and the groove. The tail of the transmission arm 36 is hinged to one side of the linkage arm 38. The transmission arm 36 and the linkage arm 38 work together to push the splined sleeve 13 to move back and forth on the splined shaft 6.

[0054] It is worth noting that during reciprocating propulsion: A reciprocating assembly is installed, introducing high-pressure gas from the outside into the main pipe 16 via high-pressure pipe 17. Then, pipe 18 is opened, introducing gas into pipe 33. Gas is then sent into the circular cavity 30 via pipe 33. Within the circular cavity 30, the impeller 32 divides it into multiple chambers. Thus, after entering the circular cavity 30, the gas drives the impeller 32 to rotate. Subsequently, the gas is discharged via pipe 4. Repeating this process drives the impeller 32 to rotate continuously. The impeller 32 then drives the turntable 35 to rotate, utilizing the transmission arm... Power is transmitted to the linkage arm 38 by 36, which pushes the linkage arm 38 to slide back and forth. Since the linkage arm 38 is slidably connected to the annular track 37, the linkage arm 38 can push the spline sleeve 13 without motion interference. The linkage arm 38 is restricted and guided by the limiting rod 39, so that the power of the transmission arm 36 can stably push the linkage arm 38 to move back and forth, which can drive the spline sleeve 13 to move back and forth synchronously, increasing the working range of the mixing mechanism, and can restrict the mixing mechanism to different positions within the adjustment range to process the fabric 5.

[0055] Example 3: Based on the slapping mechanism provided in Example 1, this example provides a further technical solution for the slapping mechanism.

[0056] like Figure 13As shown, each of the multiple tapping mechanisms includes multiple sliding frames 40, which are installed side-by-side at intervals on one side of the strip brush 15. The sliding frames 40 are spaced apart from the air chamber 25. A counterweight 41 is slidably installed within each of the multiple sliding frames 40. The weight of the counterweight 41 can be freely increased or decreased. The rotational speed of the spline sleeve 13 is adjusted by changing the weight of the counterweight 41. A moving rod 42 is installed on the top of each of the multiple counterweights 41, and the top of the moving rod 42 corresponds to the sliding frame 40. A striking rod 43 is installed on the top of each movable rod 42 in the sliding frame 40. Normally, the striking rod 43 is lower than the height of the strip brush 15 to avoid accidental contact between the striking rod 43 and the fabric 5. The striking rod 43 is used to perform the beating action on the fabric 5. A return spring 44 is sleeved on the outside of each movable rod 42. The return spring 44 is located between the counterweight 41 and the top of the sliding frame 40. The return spring 44 pushes the counterweight 41 to retract into the sliding frame 40 so that the striking rod 43 does not contact the fabric 5.

[0057] It is worth noting that during the beating process: With the beating mechanism in place, the beating rod 43 is normally retracted and does not contact the fabric 5. During operation, only the reduction motor 7 needs to be started and rotated at a controlled speed, causing the counterweight 41 to generate centrifugal force. This forces the counterweight 41 to slide within the sliding frame 40 and compress the return spring 44, causing the beating rod 43 to extend out and contact the strip brush 15 with the fabric 5. Simultaneously, during rotation, the beating rod 43 continuously beats the fabric 5, quickly discharging any residual sizing liquid from the fabric 5 surface and agitating the desizing liquid, allowing it to quickly enter the fabric 5. Afterward, simply reduce the rotation of the reduction motor 7. At this point, the elasticity of the return spring 44 pulls the beating rod 43 back to its original position. This allows workers to freely choose the appropriate method based on processing needs. Furthermore, the weight of the counterweight 41 can be freely adjusted. By controlling the weight of the counterweight 41, the centrifugal action can be achieved at different speed ranges for the reduction motor 7, facilitating worker adjustments.

[0058] Example 4: A pre-dyeing treatment process for uniformly coloring dark fabrics, which specifically includes the following steps:

[0059] Step 1: First, add desizing liquid into the desizing tank 2, and then pass the fabric 5 through the desizing tank 2 to make it fully contact the desizing liquid to complete the desizing action;

[0060] Step 2: With the assistance of the mixing mechanism, the action of the mixing mechanism drives the desizing liquid to mix and flow in the desizing tank 2, so that the desizing liquid comes into full contact with the fabric 5. With the cooperation of the beating mechanism, by simply increasing the rotation speed of the spline sleeve 13, the beating mechanism is driven to extend under the action of centrifugal force. During the rotation, the beating mechanism continuously beats the fabric 5, which accelerates the removal of residual sizing liquid on the fabric 5 and promotes the desizing liquid to penetrate into the fabric 5, thereby improving the desizing effect.

[0061] Step 3: With the assistance of the pneumatic mechanism, one gas stream is evenly sprayed into the desizing tank 2 via the gas supply component, forcing the desizing liquid to be agitated and mixed. This allows the desizing liquid to penetrate into the fabric 5 under the push of the gas, making the contact between the desizing liquid and the fabric 5 more stable. The pneumatic mechanism achieves multiple ways of contact between the fabric 5 and the desizing liquid, effectively improving the desizing efficiency. In addition, with the assistance of the reciprocating component, another gas stream enters the reciprocating component, which pushes the spline sleeve 13 to slide back and forth on the spline shaft 6, increasing the cleaning range of the mixing mechanism.

[0062] Step 4: Then add scouring liquid into scouring tank 3 and start heater 10 to complete the heating action. Then introduce the fabric 5 drawn out from desizing tank 2 into scouring tank 3 for high-temperature scouring.

[0063] Step 5: Finally, add bleach to the bleaching tank 4 and introduce the fabric 5 drawn from the boiling tank 3 into the bleaching tank 4 for bleaching to improve the whiteness of the fabric 5 and facilitate subsequent dyeing.

[0064] This invention provides a dyeing pretreatment scouring and bleaching system and process for uniformly dyeing dark fabrics. The specific working principle is as follows: First, desizing solution is added to the desizing tank 2, and the fabric 5 is passed through the desizing tank 2 to make it fully contact the desizing solution to complete the desizing action.

[0065] With the assistance of the mixing mechanism, the action of the mixing mechanism drives the desizing liquid to mix and flow in the desizing tank 2, so that the desizing liquid comes into full contact with the fabric 5. With the cooperation of the beating mechanism, by simply increasing the rotation speed of the spline sleeve 13, the beating mechanism is driven to extend under the action of centrifugal force. During the rotation, the beating mechanism continuously beats the fabric 5, which accelerates the removal of residual sizing liquid on the fabric 5 and promotes the desizing liquid to penetrate into the fabric 5, thereby improving the desizing effect.

[0066] Furthermore, with the assistance of the pneumatic mechanism, one gas stream is evenly sprayed into the desizing tank 2 via the gas supply component, forcing the desizing liquid to be agitated and mixed. This allows the desizing liquid to penetrate into the fabric 5 under the push of the gas, making the contact between the desizing liquid and the fabric 5 more stable. The pneumatic mechanism achieves multiple ways of contact between the fabric 5 and the desizing liquid, effectively improving the desizing efficiency. With the assistance of the reciprocating component, another gas stream enters the reciprocating component, which pushes the spline sleeve 13 to slide back and forth on the spline shaft 6, increasing the cleaning range of the mixing mechanism. Then, scouring liquid is added to the scouring tank 3, and the heater 10 is activated to complete the heating action. The fabric 5 drawn out from the desizing tank 2 is introduced into the scouring tank 3 for high-temperature scouring. Finally, bleaching liquid is added to the bleaching tank 4, and the fabric 5 drawn out from the scouring tank 3 is introduced into the bleaching tank 4 for bleaching, improving the whiteness of the fabric 5 and facilitating subsequent dyeing.

[0067] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0068] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A dyeing pretreatment scouring and bleaching system for uniformly dyeing dark fabrics, comprising a workbench (1), wherein a desizing tank (2), a scouring tank (3), and a bleaching tank (4) are sequentially installed from left to right on the upper surface of the workbench (1), and fabric (5) passes through the desizing tank (2), the scouring tank (3), and the bleaching tank (4) in sequence, characterized in that: A splined shaft (6) is rotatably installed inside the desizing tank (2). A geared motor (7) is installed on one side of the desizing tank (2) via a bracket. The output end of the geared motor (7) is connected to the splined shaft (6) for transmission. A mixing mechanism is installed outside the splined shaft (6) for transmission. The mixing mechanism is used to mix and stir the desizing liquid in the desizing tank (2) and to clean the fabric (5) through the mixing mechanism. Multiple beating mechanisms are added to the mixing mechanism. These multiple beating mechanisms work together with the mixing mechanism to actively beat and clean the fabric (5). A pneumatic mechanism is installed on the mixing mechanism. This pneumatic mechanism works with the mixing mechanism to complete the desizing operation of the fabric (5). This pneumatic mechanism is used to drive the mixing mechanism to move back and forth on the spline shaft (6). The pneumatic mechanism also evenly sends gas into the desizing tank (2) so that the desizing liquid and the fabric (5) are fully mixed and contacted. The mixing mechanism includes a spline sleeve (13), which is slidably sleeved on the spline shaft (6) and can move back and forth on the spline shaft (6). Multiple stirring elements (14) are arranged in a circular array on the side walls of the spline sleeve (13), and strip brushes (15) can be detachably installed on each of the multiple stirring elements (14). The pneumatic mechanism includes a main pipe (16) installed on one side of the deslurry tank (2) via a bracket. A high-pressure air pipe (17) is connected to one side of the main pipe (16). A first pipe (18) and a second pipe (19) are connected to both ends of the main pipe (16). A reciprocating assembly is installed on one side of the deslurry tank (2). The reciprocating assembly is connected to the first pipe (18) via a pipe. The reciprocating assembly is used to push the spline sleeve (13) to move back and forth on the spline shaft (6). An air supply assembly is installed concentrically with the spline shaft (6) on one side inside the deslurry tank (2). The air supply assembly is connected to the second pipe (19) via a pipe. The air supply assembly is used to uniformly deliver gas to the deslurry tank (2). The air supply assembly includes an annular cavity (20) installed on one side of the deslurry tank (2). The front end of the annular cavity (20) is open. An end cap (21) is installed at the open front end of the annular cavity (20) and a blocking block (22) is installed at the top inside the annular cavity (20). An air inlet pipe (23) is connected to one side of the annular cavity (20) and is connected to the second pipe (19) through a pipe. Multiple first air supply pipes (24) are arranged in a circular array on the end cap (21), the same number as the number of stirring components (14). Multiple air chambers (25) are arranged in a circular array outside the spline sleeve (13) via a bracket. Multiple nozzles (26) are evenly connected to the top of the multiple air chambers (25), and a second air supply pipe (27) is connected to one side of each of the multiple air chambers (25). The multiple second air supply pipes (27) are respectively connected to the multiple first air supply pipes (24) via spring tubes.

2. The pre-dyeing treatment scouring and bleaching system for uniformly coloring dark fabrics according to claim 1, characterized in that: Guide seats (28) extend from one side of each of the multiple air chambers (25), and synchronizing rods (29) slide through each of the multiple guide seats (28). One end of each of the multiple synchronizing rods (29) is detachably and fixedly connected to the end cap (21).

3. The pre-dyeing treatment scouring and bleaching system for uniformly coloring dark fabrics according to claim 2, characterized in that: The reciprocating assembly includes a circular cavity (30) mounted on one side of the deslurry tank (2) via a bracket. The bottom of the circular cavity (30) is open. A bottom cover (31) is detachably and sealed at the bottom of the circular cavity (30) by bolts. An impeller (32) is concentrically mounted inside the circular cavity (30). The top of the impeller (32) rotates through the center of the top of the circular cavity (30). A No. 3 air pipe (33) is connected to one side of the circular cavity (30). The No. 3 air pipe (33) is connected to the No. 1 pipe (18) via a pipe. A No. 4 air pipe (34) is connected to one side of the No. 3 air pipe (33) on the circular cavity (30). A turntable (35) is concentrically mounted on the top of the impeller (32). A transmission arm (36) is rotatably mounted on the upper surface of the turntable (35) off-center from its center.

4. A dyeing pre-treatment scouring and bleaching system for uniform dyeing of dark colored fabrics according to claim 3, characterized in that: A ring track (37) is concentrically fixed at one end of the spline sleeve (13), and a linkage arm (38) is slidably installed on the ring track (37). A limiting rod (39) is installed on one side of the inner wall of the deslurry tank (2). The limiting rod (39) slides through the linkage arm (38), and the tail of the transmission arm (36) is hinged to one side of the linkage arm (38). The transmission arm (36) and the linkage arm (38) work together to push the spline sleeve (13) to move back and forth on the spline shaft (6).

5. A dyeing pre-treatment scouring and bleaching system for uniform dyeing of dark colored fabrics according to claim 4, characterized in that: Each of the multiple patting mechanisms includes multiple sliding frames (40), which are installed side by side at intervals on one side of the strip brush (15). A counterweight (41) is slidably installed in each of the multiple sliding frames (40), and a moving rod (42) is installed on the top of each of the multiple counterweights (41). The top of the moving rod (42) corresponds to the sliding frame (40). A patting rod (43) is installed on the top of the moving rod (42) in the multiple sliding frames (40). The patting action on the fabric (5) is completed by the patting rod (43).

6. A dyeing pre-treatment scouring and bleaching system for uniform dyeing of dark colored fabrics according to claim 5, characterized in that: A reset spring (44) is fitted on the outside of each of the multiple moving rods (42), and the reset spring (44) is located between the counterweight (41) and the top of the sliding frame (40). The reset spring (44) pushes the counterweight (41) to retract into the sliding frame (40) so that the striking rod (43) does not contact the fabric (5).

7. A dyeing pre-treatment scouring and bleaching process for the uniform colouration of dark coloured fabrics, characterised in that: The dyeing pretreatment scouring and bleaching system for uniformly coloring dark fabrics, according to any one of claims 1-6, specifically includes the following steps: Step 1: First, add desizing liquid into the desizing tank (2), and pass the fabric (5) through the desizing tank (2) so that it is in full contact with the desizing liquid to complete the desizing action; Step 2: The mixing mechanism drives the desizing liquid to mix and flow in the desizing tank (2), so that the desizing liquid comes into full contact with the fabric (5). With the cooperation of the beating mechanism, the fabric (5) is continuously beated by the beating mechanism during rotation, which accelerates the removal of residual sizing liquid from the fabric (5). Step 3: With the help of the pneumatic mechanism, one gas is evenly sprayed into the desizing tank (2) through the gas supply component, which forces the desizing liquid to complete the stirring and mixing, so that the desizing liquid is pushed into the fabric (5) under the gas, making the contact between the desizing liquid and the fabric (5) more stable. The other gas enters the reciprocating component, and the reciprocating component pushes the mixing mechanism to slide back and forth on the spline shaft (6), which increases the cleaning range of the mixing mechanism. Step 4: Then add boiling liquid into boiling tank (3) and introduce the fabric (5) drawn out from desizing tank (2) into boiling tank (3) for high-temperature boiling. Step 5: Finally, add bleach to the bleaching tank (4) and introduce the fabric (5) drawn out from the boiling tank (3) into the bleaching tank (4) for bleaching to improve the whiteness of the fabric (5) and facilitate subsequent dyeing.

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