Recycled polyester yarn level-dyeing circulating dyeing equipment and method

Abstract

The invention relates to the field of polyester yarn dyeing, and discloses recycled polyester yarn level-dyeing circulating dyeing equipment which comprises a plurality of winding rollers, the winding rollers are rotationally arranged in a dyeing pool, a plurality of rotating grooves are formed in the two sides of the interior of the dyeing pool respectively, rotating columns are fixed to the two ends of each winding roller respectively, and the rotating columns are arranged in the dyeing pool. A bearing is arranged in the rotating groove, a plurality of spiral microgrooves are formed in the surface of the winding roller, a mounting plate is slidably arranged on the top face of the dyeing pool, and two dyeing inlets and outlets are formed in the top face of the mounting plate. The polyester yarn wound on the surface is completely immersed in the dyeing liquid in the dyeing pool through the winding roller, the polyester yarn can be attached to the winding roller when dyed in the dyeing pool, the multiple spiral microgrooves are formed in the surface of the winding roller, the dyeing liquid can be guided to permeate to the attaching face of the polyester yarn and the winding roller, full contact is ensured, and the dyeing effect is improved. The dyeing uniformity of the polyester yarns is improved.

Description

Technical Field

[0001] This invention relates to the technical field of polyester yarn dyeing, specifically to a recycling dyeing equipment and method for recycled polyester yarn. Background Technology

[0002] Recycled polyester yarn leveling and recycling technology is an environmentally friendly and efficient textile processing technique. It typically uses recycled polyester (such as PET bottle flakes) as raw material, which is melt-spun into recycled yarn. A closed-loop dyeing system, combined with low-temperature dyeing auxiliaries and leveling agents, ensures uniform dye adsorption and reduces color difference.

[0003] According to Chinese Patent No. CN221344944U, an energy-saving dyeing machine for polyester chenille yarn includes a dyeing box and a heat exchanger. The dyeing box has an inlet and an outlet on both sides of its top. The dyeing box also has a recycling component at the outlet for extruding excess dye from the yarn. A bracket is installed on the inner and outer walls of the inlet and outlet. A conveyor roller is rotatably mounted on the bracket. Multiple conveyor rollers are rotatably mounted inside the dyeing box. A stirring component for stirring the dye is provided at the bottom of the dyeing box. The heat exchanger is installed on the top of the dyeing box. A circulation component for circulating the dye is provided between the heat exchanger and the dyeing box.

[0004] In the above scheme, the yarn in the dyeing process is transported by the conveyor roller inside the dyeing box, which still has the following disadvantages: at the point where the yarn and the conveyor roller are in contact, the dyeing solution cannot fully contact the yarn due to their overlapping and sticking. Summary of the Invention

[0005] The purpose of this invention is to provide a recycling dyeing equipment and method for recycled polyester yarn, in order to solve the problem that the dyeing solution cannot fully contact the yarn at the point where the yarn and the conveyor roller are in contact due to their overlapping.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: a recycled polyester yarn uniform dyeing and circulating dyeing device, comprising a plurality of winding rollers, all of which are rotatably disposed inside a dyeing tank. A plurality of rotating grooves are respectively opened on both sides of the inside of the dyeing tank. Rotating columns are fixed at both ends of each winding roller. Bearings are disposed inside the rotating grooves. The surface of the rotating column is fixed to the inner wall of the inner ring of the bearing. A plurality of spiral microgrooves are opened on the surface of the winding rollers. An mounting plate is slidably disposed on the top surface of the dyeing tank. Two dyeing inlets and outlets are opened on the top surface of the mounting plate.

[0007] Preferably, the top surface of the dyeing pool has two sliding grooves, the bottom surface of the mounting plate has two sliding strips fixed, the sliding grooves and the sliding strips are slidably arranged, and a positioning rod is fixed inside the sliding grooves, and the sliding strips and the positioning rods are slidably inserted into each other.

[0008] Preferably, the top surface of the mounting plate is fixed with a plurality of fixing plates, wherein two fixing plates form a group, and a lower circulating roller is rotatably arranged between each group of fixing plates. The two ends of the lower circulating roller are respectively fixed with positioning posts. A positioning hole is opened on one side of the fixing plate, and the positioning post is rotatably inserted into the positioning hole. An upper circulating roller is rotatably arranged between each group of fixing plates. The two ends of the upper circulating roller are respectively fixed with connecting posts. A connecting hole is opened on one side of the fixing plate, and the connecting post is rotatably inserted into the connecting hole.

[0009] Preferably, a drying chamber is provided above the mounting plate, two support plates are fixed on the top surface of the mounting plate, drying inlets and outlets are respectively opened on both sides of the drying chamber, the top surface of the support plates is fixed to the bottom surface of the drying chamber, a number of electric heating tubes are provided inside the drying chamber, and a rolling roller is rotatably provided inside the drying chamber.

[0010] Preferably, the bottom surface of the dyeing pool is provided with a sleeve hole, a rotating shaft is rotatably inserted into the sleeve hole, an installation ring is slidably inserted on the rotating shaft, two stirring plates are fixed on the surface of the installation ring, a sealing ring is fixed inside the sleeve hole, and the inner wall surface of the sealing ring is tightly fitted with the surface of the rotating shaft.

[0011] Preferably, the surface of the rotating shaft is fixed with two limiting strips, and the inner wall of the mounting ring is provided with two limiting grooves, and the limiting strips slide in conjunction with the limiting grooves.

[0012] Preferably, a motor is provided on the bottom surface of the dyeing pool, a drive gear is fixedly sleeved on the output shaft of the motor, and a driven gear is fixedly sleeved on the rotating shaft, with the drive gear and the driven gear meshing with each other.

[0013] Preferably, the top end of the rotating shaft is provided with a threaded groove, and the internal thread of the threaded groove is connected to a mounting bolt.

[0014] This invention also provides a circulating dyeing method for a recycled polyester yarn leveling and circulating dyeing device, the specific steps of which are as follows:

[0015] Step 1: The polyester yarn first enters the dyeing pool from the dyeing inlet and outlet on the left, then goes around the winding roller and is immersed in the dyeing solution, and finally slides out of the dyeing pool from the dyeing inlet and outlet on the right, completing the first dyeing of the polyester yarn.

[0016] Step 2: The polyester yarn that slides out from the dyeing inlet and outlet on the right side will first go around the lower circulation roller on the right side, and then go around the upper circulation roller on the right side.

[0017] Step 3: The polyester yarn that slides out from the upper circulating roller on the right side will pass through the drying box and slide on the rolling roller. The dyed polyester yarn is dried by the electric heating tube.

[0018] Step 4: Then, bypass the lower and upper circulating rollers on the left in the reverse order, and enter the dyeing pool through the dyeing inlet and outlet on the left to perform circulating dyeing of the polyester yarn.

[0019] Compared with existing technologies, a recycled polyester yarn leveling and circulating dyeing equipment that adopts the above-mentioned technical solution has the following beneficial effects:

[0020] 1. The polyester yarn wound on the surface is completely immersed in the dyeing solution inside the dyeing tank by the winding roller, so that the polyester yarn and the dyeing solution are in full contact. When the polyester yarn is dyed inside the dyeing tank, it will stick together with the winding roller. Since the surface of the winding roller has multiple spiral micro-grooves, it can guide the dyeing solution to penetrate to the contact surface between the polyester yarn and the winding roller, ensuring full contact and increasing the uniformity of dyeing of the polyester yarn.

[0021] Second, the polyester yarn extending from the dyeing inlet and outlet on the right side of the mounting plate will pass under the lower circulating roller on the right side and pass over the upper circulating roller on the right side. Then, following the reverse order of the above steps, the polyester yarn is fed back into the dyeing pool from the dyeing inlet and outlet on the left side. This allows for the cyclic dyeing of the polyester yarn, preventing missed dyeing in a single dyeing cycle and improving the dyeing yield of the polyester yarn.

[0022] 3. When the dyed polyester yarn slides between the two upper circulating rollers, it will pass through the drying inlet and outlet of the drying box. The electric heating tube at the bottom of the drying box will accelerate the drying speed of the dyed polyester yarn. When the polyester yarn moves inside the drying box, it will be supported upward by the rolling roller to prevent the polyester yarn from melting in contact with the high temperature electric heating tube.

[0023] IV. If the agitator plate is damaged, the staff will first drain the dyeing solution from the dyeing tank, then remove the mounting bolts, and then replace the damaged mounting ring and agitator plate. When assembling the mounting ring, it is necessary to ensure that the limit strip and the limit groove are aligned. During the dyeing process, the effective components in the dyeing solution will gradually decrease as dyeing continues, resulting in uneven distribution of the effective components in the dyeing solution. At this time, the output shaft of the motor will drive the drive gear to rotate synchronously. Through the meshing of the drive gear and the driven gear, the rotating shaft will rotate synchronously, which will drive the mounting ring and agitator plate to rotate, thereby driving the dyeing solution to be agitated inside the dyeing tank, so that the effective components in the dyeing solution are redistributed evenly. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of an embodiment.

[0025] Figure 2 This is an exploded three-dimensional schematic diagram of an embodiment.

[0026] Figure 3 This is an exploded view of the dyeing pool and winding roller in the embodiment.

[0027] Figure 4 This is an exploded view of the rotating shaft and mounting ring in the embodiment.

[0028] Figure 5 This is an exploded view of the rotating column and the spiral microgroove in the embodiment.

[0029] Figure 6 This is an exploded view of the fixed plate and support plate in the embodiment.

[0030] Figure 7 This is an exploded view of the drying chamber and the drying inlet / outlet in the embodiment.

[0031] In the diagram: 1. Dyeing tank; 2. Winding roller; 3. Rotating groove; 4. Rotating column; 5. Bearing; 6. Spiral micro-groove; 7. Mounting plate; 8. Dyeing inlet / outlet; 9. Sliding groove; 10. Sliding strip; 11. Positioning rod; 12. Fixing plate; 13. Lower circulating roller; 14. Positioning column; 15. Positioning hole; 16. Upper circulating roller; 17. Connecting column; 18. Connecting hole; 19. Drying box; 20. Support plate; 21. Drying inlet / outlet; 22. Electric heating tube; 23. Rolling roller; 24. Sleeve hole; 25. Rotating shaft; 26. Mounting ring; 27. Stirring plate; 28. Sealing ring; 29. ​​Limiting strip; 30. Limiting groove; 31. Motor; 32. Driving gear; 33. Driven gear; 34. Threaded groove; 35. Mounting bolt. Detailed Implementation

[0032] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0033] like Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, a recycled polyester yarn uniform dyeing and circulating dyeing device includes several winding rollers 2, which are rotatably arranged inside a dyeing tank 1. Several rotating grooves 3 are respectively opened on both sides of the inside of the dyeing tank 1. Rotating columns 4 are fixed at both ends of the winding rollers 2. Bearings 5 ​​are arranged inside the rotating grooves 3. The surface of the rotating column 4 is fixed to the inner wall of the inner ring of the bearing 5. Several spiral micro-grooves 6 are opened on the surface of the winding rollers 2. An installation plate 7 is slidably arranged on the top surface of the dyeing tank 1. Two dyeing inlets and outlets 8 are opened on the top surface of the installation plate 7. Two sliding grooves 9 are opened on the top surface of the dyeing tank 1. Two sliding strips 10 are fixed on the bottom surface of the installation plate 7. The sliding grooves 9 and the sliding strips 10 are slidably arranged. A positioning rod 11 is fixed inside the sliding groove 9. The sliding strips 10 and the positioning rod 11 are slidably inserted.

[0034] In use, before dyeing the polyester yarn, the operator will first push the mounting plate 7 on the top surface of the dyeing tank 1. When the mounting plate 7 slides on the top surface of the dyeing tank 1, the sliding strip 10 will slide inside the sliding groove 9. The sliding cooperation between the sliding strip 10 and the positioning rod 11 prevents the mounting plate 7 from falling off the top surface of the dyeing tank 1, allowing the operator to manually interfere with the dyeing state of the polyester yarn inside the dyeing tank 1. The distribution and position of the polyester yarn on the winding roller 2 can be manually adjusted. When the polyester yarn contacts the surface of the winding roller 2, the dyeing liquid inside the dyeing tank 1 will contact the polyester yarn through multiple spiral micro-grooves 6 on the winding roller 2 for dyeing. As the polyester yarn moves inside the dyeing tank 1, it will drive the winding roller 2 to rotate. During the rotation, the rotating column 4 will rotate inside the rotating groove 3. At the same time, the bearing 5 is used to reduce the friction of the winding roller 2 during rotation.

[0035] The polyester yarn wound on the surface is completely immersed in the dyeing solution inside the dyeing pool 1 by the winding roller 2, so that the polyester yarn and the dyeing solution are in full contact. When the polyester yarn is dyed inside the dyeing pool 1, it will stick together with the winding roller 2. Since the surface of the winding roller 2 is provided with multiple spiral microgrooves 6, the dyeing solution can be guided to penetrate to the contact surface between the polyester yarn and the winding roller 2, ensuring full contact and increasing the uniformity of dyeing of the polyester yarn.

[0036] like Figure 2 and Figure 6 As shown, a number of fixing plates 12 are fixed on the top surface of the mounting plate 7. Two fixing plates 12 form a group. A lower circulating roller 13 is rotatably arranged between each group of fixing plates 12. Positioning posts 14 are fixed at both ends of the lower circulating roller 13. A positioning hole 15 is opened on one side of the fixing plate 12. The positioning post 14 is rotatably inserted into the positioning hole 15. An upper circulating roller 16 is rotatably arranged between each group of fixing plates 12. A connecting post 17 is fixed at both ends of the upper circulating roller 16. A connecting hole 18 is opened on one side of the fixing plate 12. The connecting post 17 is rotatably inserted into the connecting hole 18.

[0037] In use, the polyester yarn extending from the dyeing inlet / outlet 8 on the right side of the mounting plate 7 will pass under the lower circulating roller 13 on the right side and pass over the upper circulating roller 16 on the right side. Then, following the reverse order of the above steps, the polyester yarn is fed back into the dyeing pool 1 from the left dyeing inlet / outlet 8. This allows for the cyclic dyeing of the polyester yarn, preventing missed dyeing in a single dyeing cycle and improving the yield of dyed polyester yarn.

[0038] like Figure 2 , Figure 6 and Figure 7 As shown, a drying chamber 19 is provided above the mounting plate 7. Two support plates 20 are fixed on the top surface of the mounting plate 7. Drying inlets and outlets 21 are respectively opened on both sides of the drying chamber 19. The top surface of the support plates 20 is fixed to the bottom surface of the drying chamber 19. Several electric heating tubes 22 are provided inside the drying chamber 19. A rolling roller 23 is rotatably provided inside the drying chamber 19.

[0039] During use, when the dyed polyester yarn slides between the two upper circulating rollers 16, it passes through the drying inlet and outlet 21 and then through the drying chamber 19. The electric heating tube 22 at the bottom of the drying chamber 19 accelerates the drying speed of the dyed polyester yarn. When the polyester yarn moves inside the drying chamber 19, it is supported upward by the rolling roller 23 to prevent the polyester yarn from contacting and melting with the high temperature electric heating tube 22.

[0040] like Figure 4 As shown, the bottom surface of the dyeing pool 1 has a fitting hole 24, and a rotating shaft 25 is rotatably inserted inside the fitting hole 24. An installation ring 26 is slidably inserted on the rotating shaft 25. Two agitator plates 27 are fixed on the surface of the installation ring 26. A sealing ring 28 is fixed inside the fitting hole 24. The inner wall of the sealing ring 28 is tightly fitted with the surface of the rotating shaft 25. Two limiting strips 29 are fixed on the surface of the rotating shaft 25. Two limiting grooves 30 are opened on the inner wall of the installation ring 26. The limiting strips 29 and the limiting grooves 30 slide in cooperation. A motor 31 is installed on the bottom surface of the dyeing pool 1. A drive gear 32 is fixedly fitted on the output shaft of the motor 31. A driven gear 33 is fixedly fitted on the rotating shaft 25. The drive gear 32 and the driven gear 33 mesh with each other. A threaded groove 34 is opened at the top of the rotating shaft 25. A mounting bolt 35 is connected to the threaded groove 34.

[0041] If the agitator plate 27 is damaged during use, the operator will first drain the dyeing solution inside the dyeing tank 1, then remove the mounting bolt 35, and then replace the damaged mounting ring 26 and agitator plate 27. When assembling the mounting ring 26, it is necessary to ensure that the limit strip 29 is aligned with the limit groove 30. During the dyeing process, the effective components in the dyeing solution inside the dyeing tank 1 will gradually decrease as the dyeing continues, resulting in uneven distribution of the effective components in the dyeing solution. At this time, the output shaft of the motor 31 will drive the drive gear 32 to rotate synchronously. Through the meshing of the drive gear 32 and the driven gear 33, the rotating shaft 25 will rotate synchronously, thereby driving the mounting ring 26 and agitator plate 27 to rotate, which will drive the dyeing solution to be agitated inside the dyeing tank 1, so that the effective components in the dyeing solution are redistributed evenly.

[0042] This invention also provides a circulating dyeing method for a recycled polyester yarn leveling and circulating dyeing device, the specific steps of which are as follows:

[0043] Step 1: The polyester yarn first enters the dyeing pool 1 from the dyeing inlet 8 on the left, then goes around the winding roller 2 and is immersed in the dyeing solution, and finally slides out of the dyeing pool 1 from the dyeing inlet 8 on the right, completing the first dyeing of the polyester yarn.

[0044] Step 2: The polyester yarn that slides out from the dyeing inlet / outlet 8 on the right side will first go around the lower circulation roller 13 on the right side, and then go around the upper circulation roller 16 on the right side.

[0045] Step 3: The polyester yarn that slides out from the upper circulating roller 16 on the right side will pass through the drying box 19 and slide on the rolling roller 23. The dyed polyester yarn will be dried by the electric heating tube 22.

[0046] Step 4: Then, bypass the lower circulating roller 13 and the upper circulating roller 16 on the left in the reverse order, and enter the interior of the dyeing pool 1 through the dyeing inlet and outlet 8 on the left to perform circulating dyeing of the polyester yarn.

[0047] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A recycled polyester yarn leveling and circulating dyeing device, comprising a plurality of winding rollers (2), wherein the plurality of winding rollers (2) are rotatably disposed inside a dyeing tank (1), characterized in that, The dyeing pool (1) has several rotating grooves (3) on both sides inside. The two ends of the winding roller (2) are fixed with rotating columns (4). The rotating groove (3) is provided with a bearing (5). The surface of the rotating column (4) is fixed to the inner wall of the inner ring of the bearing (5). The surface of the winding roller (2) is provided with several spiral micro-grooves (6). The top surface of the dyeing pool (1) is slidably provided with an installation plate (7). The top surface of the installation plate (7) has two dyeing inlets and outlets (8).

2. The recycled polyester yarn leveling and circulating dyeing equipment according to claim 1, characterized in that: The top surface of the dyeing pool (1) has two sliding grooves (9), and the bottom surface of the mounting plate (7) has two sliding strips (10). The sliding grooves (9) and the sliding strips (10) are slidably arranged. A positioning rod (11) is fixed inside the sliding grooves (9), and the sliding strips (10) and the positioning rod (11) are slidably inserted.

3. The recycled polyester yarn leveling and circulating dyeing equipment according to claim 1, characterized in that: The top surface of the mounting plate (7) is fixed with several fixing plates (12), two fixing plates (12) form a group, and a lower circulating roller (13) is rotatably arranged between each group of fixing plates (12). The two ends of the lower circulating roller (13) are respectively fixed with positioning columns (14). A positioning hole (15) is opened on one side of the fixing plate (12). The positioning column (14) is rotatably inserted into the positioning hole (15). An upper circulating roller (16) is rotatably arranged between each group of fixing plates (12). A connecting column (17) is fixed at both ends of the upper circulating roller (16). A connecting hole (18) is opened on one side of the fixing plate (12). The connecting column (17) is rotatably inserted into the connecting hole (18).

4. The recycled polyester yarn leveling and circulating dyeing equipment according to claim 1, characterized in that: A drying chamber (19) is provided above the mounting plate (7). Two support plates (20) are fixed on the top surface of the mounting plate (7). Drying inlets and outlets (21) are respectively opened on both sides of the drying chamber (19). The top surface of the support plate (20) is fixed to the bottom surface of the drying chamber (19). Several electric heating tubes (22) are provided inside the drying chamber (19). A rolling roller (23) is rotatably arranged inside the drying chamber (19).

5. The recycled polyester yarn leveling and circulating dyeing equipment according to claim 1, characterized in that: The bottom surface of the dyeing pool (1) is provided with a sleeve hole (24). A rotating shaft (25) is rotatably inserted inside the sleeve hole (24). An installation ring (26) is slidably inserted on the rotating shaft (25). Two stirring plates (27) are fixed on the surface of the installation ring (26). A sealing ring (28) is fixed inside the sleeve hole (24). The inner wall surface of the sealing ring (28) is tightly fitted with the surface of the rotating shaft (25).

6. The recycled polyester yarn leveling and circulating dyeing equipment according to claim 5, characterized in that: Two limiting strips (29) are fixed on the surface of the rotating shaft (25), and two limiting grooves (30) are opened on the inner wall of the mounting ring (26). The limiting strips (29) and the limiting grooves (30) slide together.

7. The recycled polyester yarn leveling and circulating dyeing equipment according to claim 6, characterized in that: A motor (31) is provided on the bottom surface of the dyeing pool (1). A drive gear (32) is fixedly sleeved on the output shaft of the motor (31), and a driven gear (33) is fixedly sleeved on the rotating shaft (25). The drive gear (32) and the driven gear (33) mesh with each other.

8. The recycled polyester yarn leveling and circulating dyeing equipment according to claim 6, characterized in that: The top end of the rotating shaft (25) is provided with a threaded groove (34), and the internal thread of the threaded groove (34) is connected to the mounting bolt (35).

9. A circulating dyeing method based on the circulating dyeing equipment for recycled polyester yarn according to any one of claims 1-8, characterized in that, The specific steps are as follows: Step 1: The polyester yarn first enters the dyeing pool (1) from the dyeing inlet (8) on the left, then goes around the winding roller (2) and is immersed in the dyeing solution. Finally, it slides out of the dyeing pool (1) from the dyeing inlet (8) on the right to complete the first dyeing of the polyester yarn. Step 2: The polyester yarn that slides out from the dyeing inlet / outlet (8) on the right side will first go around the lower circulation roller (13) on the right side, and then go around the upper circulation roller (16) on the right side. Step 3: The polyester yarn that slides out from the upper circulating roller (16) on the right side will pass through the drying box (19) and slide on the rolling roller (23) to dry the dyed polyester yarn using the electric heating tube (22). Step 4: Then, in the reverse order, bypass the lower circulating roller (13) and upper circulating roller (16) on the left, and enter the interior of the dyeing pool (1) through the dyeing inlet and outlet (8) on the left to perform circulating dyeing of the polyester yarn.

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