Knitted fabric dyeing device

Abstract

The invention discloses a knitted fabric dyeing device which comprises a fabric feeding frame, a scouring tank, a washing tank, a dyeing tank and a drying cylinder drying machine which are sequentially connected, the drying cylinder drying machine comprises a stand column, a plurality of sets of drying cylinders, a steam inlet system and a drainage system, the steam inlet system inputs high-temperature steam into the drying cylinders, and the drainage system discharges condensate water in the drying cylinders; the drying cylinder drying machine comprises a plurality of pre-drying cylinders, the pre-drying cylinders are located in front of the multiple sets of drying cylinders, knitted fabric is heated through the pre-drying cylinders from front to back in sequence and then dried through the multiple sets of drying cylinders, each pre-drying cylinder comprises an outer cylinder and an inner cylinder, and a jacket containing cavity is formed between the outer cylinder and the inner cylinder. The jacket containing cavities of the front pre-drying cylinder and the rear pre-drying cylinder are sequentially connected through a pipeline, the jacket containing cavity of the last pre-drying cylinder is connected with the drainage system, and condensate water sequentially passes through the multiple pre-drying cylinders from back to front and then is drained. The knitted fabric dyeing device provided by the invention can stably heat and dry the knitted fabric and is beneficial to keeping the stability of the conveying tension of the knitted fabric.

Description

Technical Field

[0001] The invention relates to a knitted cloth dyeing device, belonging to the technical field of printing and dyeing equipment. Background Art

[0002] The dyeing of knitted fabrics requires the procedures of scouring, washing, dyeing and drying. At present, the drying usually uses a drum dryer to achieve flat-width drying. The current drum dryer is composed of a column, a drying drum, a transmission mechanism, a steam inlet and a drainage system, etc. It is often used in conjunction with some related unit machines. When in use, the drying drum uses water vapor as a heat source, and the flat-width wet knitted fabric is tightly attached to each actively rotating hot drum surface with a certain wrap angle. During the operation, the heat energy conducted by the drum surface is absorbed to vaporize the moisture to achieve the drying of the knitted fabric, and the water vapor in the drum is cooled by heat conduction to form condensed water that is discharged through the drainage system. The drying drums on the current dryers all dry the knitted fabrics at the same temperature, and the temperature of the knitted fabrics that have just entered the dryer is relatively low. Direct contact with the high-temperature drying drum will cause the surface area of ​​the knitted fabric to change too quickly due to too fast heating, which will affect the tension stability of the knitted fabric, easily cause the knitted fabric to deform or be damaged, and affect the quality of the knitted fabric. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a knitted fabric dyeing device, which can steadily heat up and dry the knitted fabric, thereby helping to maintain the stability of its conveying tension and solving the shortcomings of the prior art.

[0004] The technical solution of the present invention is: a knitted fabric dyeing device, comprising a cloth feeding rack, a scouring tank, a washing tank, a dyeing tank, and a drum dryer connected in sequence, the drum dryer comprising a column, a plurality of groups of drying drums, a steam inlet system and a drainage system, the steam inlet system inputs high-temperature steam into the drying drum, and the drainage system discharges condensed water in the drying drum, the drum dryer comprises a plurality of pre-drying drums, the plurality of pre-drying drums are located in front of the plurality of groups of drying drums, the knitted fabric is heated from front to back in sequence by the plurality of pre-drying drums and then dried by the plurality of groups of drying drums, the pre-drying drum comprises an outer drum and an inner drum, a jacket cavity is formed between the outer drum and the inner drum, the jacket cavities of the front and rear pre-drying drums are connected in sequence through pipelines, the jacket cavity of the rearmost pre-drying drum is connected to the drainage system, and the condensed water is discharged from the back to the front in sequence after passing through the plurality of pre-drying drums.

[0005] Furthermore, the drying cylinder includes a cylinder body with hollow shafts at both ends, a turbulator is provided in the cylinder body, the turbulator includes multiple connecting rings and multiple spoiler rods, the multiple connecting rings are coaxially arranged in the cylinder body, the spoiler rods are evenly distributed along the circumference and fixed on the outer edge of the connecting ring and contact the inner wall of the cylinder body, the connecting ring is an elastic ring with an opening on the circumference, the opening of the elastic ring is provided with an inner folded flange, and a corresponding right-angle diverter is provided at the opening of each connecting ring, the right-angle diverter has an output shaft and an input shaft extending through its two ends and distributed at right angles, the two ends of the output shaft are respectively spirally connected to the inner folded flanges on both sides of the opening, and the input shafts of several right-angle diverters are located on the same axis and connected in sequence.

[0006] Further, at least one of the steering gears is provided with a fastener for fixing the input shaft.

[0007] The drainage system further comprises a siphon tube extending into the cylinder through a hollow shaft, the spoiler rod having a drainage channel distributed along its length, the spoiler rod having an opening connected to the drainage channel on the rotating side of the drying cylinder, and a branch pipe connecting the drainage channel with the siphon tube at one end of the spoiler rod.

[0008] Furthermore, the spoiler rod is arranged obliquely on the outer edge of the connecting ring, and is provided with a branch pipe end located behind the other end.

[0009] Furthermore, the spoiler rod has a folded edge, the spoiler rod and the inner wall of the cylinder form the drainage channel, and the folded edge cooperates with the inner wall of the cylinder to form the opening.

[0010] It further includes a bearing seat with a cavity inside, and the drying cylinder is rotatably installed in the bearing seat through the rotating shaft. The bearing seat is provided with a nozzle for filling lubricating oil into the cavity. A bearing shaft and a pair of shaft sealing assemblies are limitedly installed in the cavity. The pair of shaft sealing assemblies are respectively located on both sides of the bearing shaft and cooperate with the rotating shaft of the drying cylinder for sealing. The shaft sealing assembly has an oil storage tank connected to the cavity.

[0011] Furthermore, the shaft seal assembly includes an inner shaft seal and an outer shaft seal which are arranged inside and outside. The inner shaft seal and the outer shaft seal respectively have a lip extending inwardly and contacting the hollow shaft, and the oil storage tank is formed between the two lips. The shaft seal assembly has a refueling hole connected to the oil storage tank on the side close to the bearing shaft.

[0012] Furthermore, a valve membrane is provided at the refueling hole, and the valve membrane prevents the lubricating oil in the oil storage tank from flowing into the cavity.

[0013] By implementing the present invention, both ends of the input shaft of each diverter are spirally connected with the inner folded flanges on both sides of the opening of the corresponding elastic ring. When the output shaft rotates, the opening is synchronously expanded to both sides or contracted inward. The input shafts of multiple diverters are connected in sequence. The input shafts of multiple diverters are synchronously rotated by driving the input shafts to achieve synchronous expansion and contraction of multiple elastic rings. During installation, the multiple elastic rings are first contracted to make the diameter of the turbulator smaller than the inner diameter of the drying drum, and the turbulator can be easily placed in the drying drum. Then, the input shaft is operated to synchronously expand the multiple elastic rings, so that the spoiler rods on the elastic rings contact the inner wall of the drying drum, and the turbulator is tightly installed in the drying drum, which is convenient for installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the present invention;

[0015] Figure 2 is a schematic diagram of a pre-drying cylinder;

[0016] Figure 3 This is a schematic diagram of the connection of the pre-drying cylinder;

[0017] Figure 4 is a schematic diagram of a drying drum;

[0018] Figure 5 It is a schematic diagram of the connection between the turbulator and the siphon device;

[0019] Figure 6 It is a top view of the drying drum;

[0020] Figure 7 for Figure 6 A-direction sectional view;

[0021] Figure 8 for Figure 6 B-direction cross-sectional view;

[0022] Fig. 9 for Figure 8 Enlarged view of point C;

[0023] Fig.10 A cross-sectional view of the shaft seal assembly.

[0024] As shown in the figure: cloth inlet rack 1; scouring tank 2; washing tank 3; dyeing tank 4; drying drum dryer 5; padder 6; drying drum 7; siphon 8; pre-drying drums 9, 9A, 9B, 9C; outer cylinder 10; inner cylinder 11; turbulator 12; connecting ring 13; spoiler rod 14; inner folding flange 15; right-angle steering gear 16; output shaft 17; input shaft 18; fastening screw 19; jacket cavity 20; opening 21; branch pipe 22; drainage channel 23; folding edge 24; cavity 25; bearing cover 26; oiling nozzle 27; bearing shaft 28; shaft seal assembly 29; annular groove 30; oil storage tank 31; inner shaft seal 32; outer shaft seal 33; lip 34; oiling hole 35; valve membrane 36. DETAILED DESCRIPTION

[0025] Embodiments of the present invention: Figures 1 to 10 As shown, a knitted fabric dyeing device comprises a cloth feeding rack 1, a scouring tank 2, a washing tank 3, a dyeing tank 4, and a drum dryer 5 which are connected in sequence. A padder 6 is arranged between the scouring tank 2 and the washing tank 3, between the washing tank 3 and the dyeing tank 4, and between the dyeing tank 4 and the drum dryer 5. The drum dryer 5 comprises a column, a plurality of drying drums 7, a steam inlet system and a drainage system. The drying drum 7 comprises a cylinder body with hollow shafts at both ends. After passing through the column, the heated steam is introduced into the drying drum 7 through the hollow shaft on one side of the drying drum 7. The condensed water in the drying drum 7 is discharged from the drying drum through the hollow shaft on the other side through a drainage device such as a siphon 8. 7, the drying drum drying machine 5 comprises a plurality of pre-drying drums 9, 9A, 9B, 9C, and the plurality of pre-drying drums 9, 9A, 9B, 9C are arranged in front of the plurality of drying drums 7. The knitted fabric is heated by the plurality of pre-drying drums 9 from front to back and then dried by the plurality of drying drums 7. The pre-drying drum 9 comprises an outer drum 10 and an inner drum 11, and the inner drum 11 is coaxially fixed in the outer drum 11. A jacket cavity 20 is formed between the inner wall of the outer drum 10 and the outer wall of the inner drum 11. Hollow shafts connected to the jacket cavity 10 are arranged at both ends of the outer drum 10. The hollow shaft at one end is a water inlet end, and the hollow shaft at the other end is a water outlet end. The outlet of the latter pre-drying drum 9 is connected to the outer wall of the outer drum 10. The water end is connected to the water inlet end of the previous pre-drying cylinder 9 through a pipeline. If there are four pre-drying cylinders distributed front and back, namely pre-drying cylinders 9, 9A, 9B, and 9C, the pre-drying cylinder 9C is located at the rear, and its water inlet end is connected to the drainage system, and its water outlet end is connected to the water inlet end of the pre-drying cylinder 9B. The water outlet end of the pre-drying cylinder 9B is connected to the water inlet end of the previous pre-drying cylinder 9A, and the water outlet end of the pre-drying cylinder 9A is connected to the water inlet end of the pre-drying cylinder 9. The condensed water discharged from the drying cylinder 7 passes through the pre-drying cylinder 9C, pre-drying cylinder 9B, pre-drying cylinder 9A, and pre-drying cylinder 9 in sequence. The knitted fabric is dyed in the dyeing tank 4 and then passed through the padder 6, and then passes through the pre-drying cylinder 9 in sequence. After drying cylinders 9, 9A, 9B, and 9C, the condensed water continues to be dried by drying cylinder 7. The condensed water just discharged from drying cylinder 7 has a temperature close to that of drying cylinder 7. The knitted fabric is heated by pre-drying cylinder 9C, pre-drying cylinder 9B, pre-drying cylinder 9A, and pre-drying cylinder 9 in sequence, and the heat loss during the transportation process causes the temperature of the condensed water in pre-drying cylinder 9C, pre-drying cylinder 9B, pre-drying cylinder 9A, and pre-drying cylinder 9 to gradually decrease, so that the knitted fabric is gradually heated up when passing through pre-drying cylinders 9, 9A, 9B, and 9C, and then continues to be dried by drying cylinder 7, so that the knitted fabric is steadily heated up and dried, which is beneficial to maintaining the stability of its conveying tension.

[0026] As a preferred embodiment, the drying cylinder 7 includes a cylinder body with hollow shafts at both ends. In order to prevent condensed water from forming a water film on the inner surface of the drying cylinder 7 as the drying cylinder 7 rotates at high speed and affects heat conduction, a turbulator 12 is provided in the cylinder body. The turbulator 12 includes a plurality of connecting rings 13 and a plurality of spoiler rods 14. The plurality of connecting rings 13 are coaxially arranged in the cylinder body. The spoiler rods 14 are evenly distributed and fixed on the outer edges of the connecting rings 13 along the circumference and contact the inner wall of the cylinder body. The connecting ring 13 is made of cast iron and has an elastic ring with an opening on the circumference. The opening of the elastic ring is provided with an inner folded flange 15. A corresponding right-angle deflector 16 is provided at the opening of each connecting ring 13. The right-angle deflector 16 has an output shaft 17 and an input shaft 18 extending through its two ends and distributed at right angles. The output shaft 18 has external threads at both ends, and the inner folded flanges 15 on both sides are provided with matching internal threads The output shaft 18 is spirally connected to the inner folded flanges 10 on both sides of the opening, and the input shafts 17 of multiple right-angle diverters 16 are located on the same axis and connected in sequence. Before being placed in the cylinder, the multiple right-angle diverters 16 are synchronously driven to shrink the opening of the connecting ring 13 so that the diameter of the turbulator is smaller than the inner diameter of the cylinder, and the turbulator can be easily placed in the cylinder. Then the input shaft 17 is operated to synchronously expand the multiple connecting rings 13 so that the spoiler rods 14 on the elastic ring contact the inner wall of the cylinder. After the turbulator is tightly installed in the cylinder 4, the end plates and the hollow shafts are installed at both ends of the cylinder. Due to the synchronous transmission of multiple right-angle diverters 16, it is only necessary to operate the right-angle diverter 16 close to the end of the cylinder during installation. The installer does not need to enter the cylinder, which is convenient for installation. The connecting ring 5 is synchronously expanded to evenly distribute the force, which is conducive to the installation of the turbulator.

[0027] As a preference, at least one right-angle steering gear 16 is provided with a fastener for fixing the input shaft 17. During operation, the input shaft 17 of the right-angle steering gear 16 close to the end of the cylinder can be rotated to achieve synchronous transmission of multiple right-angle steering gears 16. A fastening screw 19 can be screwed on the right-angle steering gear 16 close to the end. After the turbulator is expanded and installed by rotating the input shaft 17 of the right-angle steering gear 16 close to the end of the cylinder, the fastening screw 19 is tightened to fix the input shaft 17 to prevent it from rotating and prevent it from loosening during use.

[0028] As a preferred embodiment, the drainage system includes a siphon tube 8 extending into the cylinder through a hollow shaft on one side of the drying cylinder 7, the spoiler rod 14 has a drainage channel 23 distributed along its length, the spoiler rod 14 is provided with an opening 21 on the side facing the rotation direction of the drying cylinder 7, and one end of the spoiler rod 14 is provided with a branch pipe 22 connected to the siphon tube 8. Due to the partition of the spoiler rod 14, the drying cylinder 7 cannot form a uniform water film when it rotates. When the condensed water gathers toward the spoiler rod 14 under the action of centrifugal force, it quickly enters the drainage channel 23 through the opening 21, and is transported to the siphon tube 8 by the respective branch pipes 22, and is collected through hydrophobicity and then sent to the pre-drying cylinder for use, thereby preventing the formation of a uniform water film and allowing the condensed water to be quickly absorbed and discharged by the spoiler rod 14.

[0029] As a preferred embodiment, the spoiler rod 14 is obliquely arranged on the outer edge of the connecting ring 13, and is provided with a branch pipe end located behind the other end. When the drying cylinder 7 rotates along the needle, the spoiler rod 14 is provided with a branch pipe end located at the ten o'clock direction, and the other end is located at the twelve o'clock direction. On the one hand, it further prevents the condensed water from forming a uniform water film. On the other hand, under the action of centrifugal force, the condensed water entering the drainage channel 23 of the spoiler rod 14 is guided with a branch pipe end, which is further conducive to the discharge of the condensed water.

[0030] As a preferred embodiment, the spoiler rod 14 has an L-shaped cross-section, one end of which contacts the inner wall of the cylinder, and the other end is provided with an inverted folded edge 24. An end plate is provided at the end of the connecting branch pipe 22. The spoiler rod 14 and the inner wall of the cylinder form a drainage channel 23, and the above-mentioned opening 21 is formed between the folded edge 24 and the inner wall of the cylinder. There is no gap between the opening 21, the drainage channel 23 and the inner wall of the cylinder. To prevent scratches on the cylinder wall, a traditional siphon tube is extended into the cylinder, and there will be a gap of 5 to 8 mm with the inner wall of the drying cylinder, which makes it difficult to completely discharge a small amount of condensed water. As soon as there is condensed water on the inner wall of the cylinder of the present invention, it enters the drainage channel 23 through the opening 21 and is quickly discharged. The inverted folded edge 24 blocks the condensed water entering the drainage channel 23 from escaping, thereby achieving rapid and complete discharge of the condensed water.

[0031] As a preferred embodiment, the invention comprises a bearing seat with a cavity 25, wherein the drying cylinder 7 is rotatably installed in the bearing seat through a hollow shaft, wherein the bearing seat comprises a seat body and a matching bearing cover 26, wherein the bearing cover 26 is provided with a grease nipple 27 for filling lubricating oil into the cavity 25, wherein a bearing shaft 28 and a pair of shaft seal assemblies 29 are limitedly installed in the cavity 25, wherein the pair of shaft seal assemblies 29 are respectively located on both sides of the bearing shaft 28 and are sealed with the hollow shaft 3, wherein an annular groove 30 is provided on the outer surface of the outer ring of the bearing shaft 28, and a through hole is provided on the outer ring for connecting the annular groove 30 with the interior, wherein the shaft seal assembly 29 has an oil storage tank 31 connected with the cavity 25, and specifically, the shaft seal assembly comprises an inner shaft seal 32 and an outer shaft seal 33 which are arranged inside and outside, wherein the inner shaft seal 32 and the outer shaft seal 33 respectively have a lip 34 extending inwardly and contacting the hollow shaft, and the oil storage tank 3 is formed between the two lips 34 1. The inner shaft seal 32 has a refueling hole 35 connected with the oil storage tank 31. Lubricating oil is added to the cavity 25 through the refueling nozzle 27. The lubricating oil first enters the annular groove 30 and then enters between the outer ring and the inner ring through the through hole and then flows into the oil storage tank 31 of the shaft seal 19 through the refueling hole 35 on both sides. The lip 34 contacts the hollow shaft 3 to achieve sealing. The structure of the shaft seal assembly 29 in which the inner shaft seal 32 and the outer shaft seal 33 cooperate with each other can enhance the sealing performance on the one hand, and on the other hand, an oil storage tank 31 can be formed between the outer shaft seal 33 and the lip 34 of the inner shaft seal 32, and the oil storage tank 31 is connected with the cavity 25. When lubricating oil is added to the bearing shaft 28 in the bearing seat through the refueling nozzle 27, the lubricating oil can be automatically added to the oil storage tank 31 of the shaft seal assembly 29, so that the shaft seal assembly 29 is kept in a state of being full of lubricating oil for use, thereby reducing wear and extending the service life.

[0032] As a preferred embodiment, a valve membrane 36 is provided at the filling hole 35. The valve membrane 36 is made of rubber and plays a one-way blocking role. When lubricating oil is added to the cavity 25, the valve membrane 36 is lifted up, and the lubricating oil can be automatically added to the oil storage tank 31 through the filling hole 35. Then the valve membrane 36 blocks the filling hole 35, and the lubricating oil in the oil storage tank 31 cannot flow back to the cavity 25, so that the shaft seal assembly 29 is kept full of lubricating oil. When the bearing shaft 28 is filled with lubricating oil, the shaft seal assembly 29 can also be supplemented with lubricating oil.

Claims

1. A knitted fabric dyeing device, comprising a cloth feeding rack, a scouring tank, a washing tank, a dyeing tank, and a drum dryer connected in sequence, wherein the drum dryer comprises a column, a plurality of drying drums, a steam inlet system and a drainage system, wherein the steam inlet system inputs high-temperature steam into the drying drum, and the drainage system discharges condensed water in the drying drum, and wherein the device is characterized in that: The drying drum dryer comprises a plurality of pre-drying drums, which are located in front of the plurality of groups of drying drums. The knitted fabric is heated by the plurality of pre-drying drums from front to back and then dried by the plurality of groups of drying drums. The pre-drying drum comprises an outer drum and an inner drum, a jacket cavity is formed between the outer drum and the inner drum, the jacket cavities of the front and rear pre-drying drums are connected in sequence through pipelines, the jacket cavity of the rearmost pre-drying drum is connected to the drainage system, and the condensed water is discharged from the back to the front after passing through the plurality of pre-drying drums in sequence.

2. The knitted fabric dyeing device according to claim 1, characterized in that: The drying cylinder comprises a cylinder body with hollow shafts at both ends, a turbulator is arranged in the cylinder body, the turbulator comprises a plurality of connecting rings and a plurality of spoiler rods, the plurality of connecting rings are coaxially arranged in the cylinder body, the spoiler rods are evenly fixed on the outer edges of the connecting rings along the circumference and contact the inner wall of the cylinder body, the connecting ring is an elastic ring with an opening on the circumference, an inner folded flange is arranged at the opening of the elastic ring, a corresponding right-angle diverter is arranged at the opening of each connecting ring, the right-angle diverter has an output shaft and an input shaft extending through its two ends and distributed at right angles, the two ends of the output shaft are respectively spirally connected to the inner folded flanges on both sides of the opening, and the input shafts of several right-angle diverters are located on the same axis and connected in sequence.

3. The knitted fabric dyeing device according to claim 2, characterized in that: At least one of the steering gears is provided with a fastener for fixing the input shaft.

4. The knitted fabric dyeing device according to claim 2, characterized in that: The drainage system includes a siphon tube extending into the cylinder through a hollow shaft. The spoiler rod has a drainage channel distributed along its length. The spoiler rod has an opening connected to the drainage channel on the rotating side of the drying cylinder. One end of the spoiler rod is provided with a branch pipe connecting the drainage channel with the siphon tube.

5. The knitted fabric dyeing device according to claim 4, characterized in that: The spoiler rod is arranged obliquely on the outer edge of the connecting ring, and is provided with a branch pipe end located behind the other end.

6. The knitted fabric dyeing device according to claim 4 or 5, characterized in that: The spoiler rod has a folded edge, the spoiler rod and the inner wall of the cylinder form the drainage channel, and the folded edge cooperates with the inner wall of the cylinder to form the opening.

7. The drying device for fabric dyeing and finishing according to claim 1, characterized in that: It comprises a bearing seat with a cavity inside, and the drying cylinder is rotatably installed in the bearing seat through the rotating shaft. The bearing seat is provided with a nozzle for filling lubricating oil into the cavity. A bearing shaft and a pair of shaft sealing assemblies are limitedly installed in the cavity. The pair of shaft sealing assemblies are respectively located on both sides of the bearing shaft and cooperate with the rotating shaft of the drying cylinder for sealing. The shaft sealing assembly has an oil storage tank connected to the cavity.

8. The drying device for fabric dyeing and finishing according to claim 7, characterized in that: The shaft seal assembly comprises an inner shaft seal and an outer shaft seal which are arranged inside and outside. The inner shaft seal and the outer shaft seal respectively have a lip extending inwardly and contacting the hollow shaft, and the oil storage tank is formed between the two lips. The shaft seal assembly has a refueling hole connected to the oil storage tank on the side close to the bearing shaft.

9. The drying device for fabric dyeing and finishing according to claim 8, characterized in that: A valve film is arranged at the oil filling hole, and the valve film prevents the lubricating oil in the oil storage tank from flowing into the containing cavity.

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