Cotton yarn continuous dyeing device

Abstract

The invention discloses a cotton yarn continuous dyeing device which comprises a dyeing bin, a dyeing supplementing assembly, an alkali detection box and an alkali removal assembly, the inner end of the dyeing bin is fixedly connected with a dyeing box and a washing box, uniformity detection is carried out through the dyeing supplementing assembly so that dyeing supplementing can be carried out on a less-dyeing area or a dyeing missing area, and in the process, a threading barrel is tightly attached to yarn to detect chromatic aberration; if the alkaline value is lower than the standard value, air supply equipment is started to enable the annular inflatable bag to expand, the yarn is pressed, dye is released through the annular elastic cotton for secondary dyeing, then the alkali detection box is used for evaluating the residual condition of alkaline substances in the dyed yarn to prevent fibers from being damaged, and if it is detected that the alkaline value is increased, the electromagnetic plate pushes the acid solution to enter the alkali removal cotton; and alkali removal treatment is carried out, so that residual alkaline substances are removed, the fibers are protected, the strength and durability of the yarns are improved, and the series of measures not only ensure the dyeing quality, but also maintain the structural integrity of the fibers.

Description

Technical Field

[0001] The invention relates to the field of textile technology, and more specifically to a cotton yarn continuous dyeing device. Background Art

[0002] The cotton yarn continuous dyeing device is a device used to dye cotton yarn in the textile industry. This device can achieve continuous dyeing of cotton yarn during the spinning and weaving process, improve production efficiency, reduce costs, and also has advantages in dyeing quality and consistency.

[0003] Generally, the continuous dyeing device for cotton yarn consists of the following main parts: the yarn feeding system, which feeds the cotton yarn to be dyed into the dyeing device through a conveying system or other devices. Pretreatment, before entering the dyeing device, the cotton yarn may be subjected to some pretreatment, such as cleaning, degreasing, pre-shrinking, etc., to ensure the dyeing effect and dyeing quality. The dyeing tank, which is the core component in the continuous dyeing device for cotton yarn, is used to fully mix and contact the dye with the cotton yarn to realize the dyeing process; the dyeing tank usually has a certain capacity and a temperature control system to ensure the stability of the dye and the dyeing effect. The heating system, which is used to control the temperature of the dye in the dyeing tank, usually adopts steam heating or other heating methods to ensure the temperature control and dyeing effect during the dyeing process. The circulation system, the dyeing device is usually equipped with a circulation system for circulating the dyeing liquid to maintain the uniform distribution and concentration of the dye in the dyeing liquid to improve the dyeing effect and consistency. The discharge system, after the dyeing is completed, the cotton yarn is sent out of the dyeing device through the discharge system and enters the subsequent processing stage, such as cleaning, drying, etc.

[0004] However, the existing cotton yarn continuous dyeing device has inconsistent dyeing liquid flow rate or uneven spraying, which causes uneven distribution of dyes and chemical additives, resulting in uneven dyeing of cotton yarn and too little color on some cotton yarns; at the same time, in the dyeing process, especially when using reactive dyes, alkaline substances (such as sodium hydroxide) are usually added to increase the pH value and promote the combination of dyes and fibers, but the washing and neutralization steps after dyeing are not properly performed, and there may be residual alkali in the yarn. Long-term residual alkaline substances may damage cotton and other cellulose fibers, resulting in decreased fiber strength and reduced durability, and alkaline substances may irritate human skin, especially for people with sensitive skin, and residual alkali may affect the color fastness and overall aesthetics of the dyed product.

[0005] Therefore, in view of the above-mentioned technical problems, it is necessary to provide a cotton yarn continuous dyeing device. Summary of the invention

[0006] The object of the present invention is to provide a cotton yarn continuous dyeing device to solve the above-mentioned problems.

[0007] In order to achieve the above purpose, the technical solution provided by an embodiment of the present invention is as follows: A cotton yarn continuous dyeing device comprises a dyeing bin, a re-dyeing component, an alkali detection box and an alkali removal component, the inner ends of the dyeing bin are respectively fixedly connected with a dyeing box and a washing box, the inner wall of the dyeing box is fixedly connected with a monitoring pH meter, the outer end of the dyeing bin is fixedly connected with a pair of mounting plates, the upper ends of the pair of mounting plates are respectively fixedly connected with a pay-off roller and a take-up roller, a plurality of auxiliary rollers are arranged in the dyeing bin, and the plurality of auxiliary rollers are respectively located at the upper ends of the dyeing box and the washing box, the inner end of the dyeing box is fixedly connected with a dyeing roller, the inner end of the washing box is fixedly connected with a washing roller, the upper inner walls of the dyeing bin are respectively fixedly connected with a first delivery box, a second delivery box and a water storage tank, and alkaline substances and acidic substances are respectively arranged in the first delivery box and the second delivery box, a flushing head is fixedly connected at the lower end of the water storage tank, and the first delivery box and the second delivery box are located above the dyeing box, and the water storage tank is located above the washing box, and the re-dyeing component, the alkali detection box and the alkali removal component are all arranged inside the dyeing bin.

[0008] As a further improvement of the present invention, a heating plate is fixedly connected to the inner end of the dyeing box, and a monitoring pH meter is located on the inner wall of the heating plate.

[0009] As a further improvement of the present invention, a recycling box is fixedly connected to the inner end of the dyeing bin, and the recycling box is located at the end of the washing box away from the dyeing box. The recycling box is connected to the washing box, and a water pump is provided at the connection between the recycling box and the washing box, and the water pump is located at the inner end of the recycling box.

[0010] As a further improvement of the present invention, the re-dyeing component, alkali detection box and alkali removal component are fixedly connected to the upper end of the recovery box in sequence, and one of the auxiliary rollers is located at the upper end of the recovery box away from the washing box.

[0011] As a further improvement of the present invention, the re-dyeing component includes a threading spool, which is fixedly connected to the upper end of the recovery box, the inner end of the threading spool close to the washing box is fixedly connected to a colorimeter, the inner end of the threading spool is inlaid with an annular air bag, the inner end of the annular air bag is fixedly connected to an annular elastic cotton, a liquid supply groove is opened in the middle of the upper half of the threading spool, the liquid supply groove is filled with dye liquid, and the liquid supply groove is fixedly connected to the annular elastic cotton through a liquid guide tube, and the side end of the lower half of the threading spool is inlaid with an air supply device, and the air supply device is fixedly connected to the annular air bag.

[0012] As a further improvement of the present invention, the alkali detection box includes a liquid box, which is fixedly connected to the upper end of the recovery box, and the upper end of the liquid box is rotatably connected to a pair of auxiliary wheels, the inner end of the liquid box is fixedly connected to a relief wheel, and the outer end of the liquid box is fixedly connected to a detection pH meter, and the detection pH meter passes through the liquid box and extends to the inside of the liquid box.

[0013] As a further improvement of the present invention, the liquid storage box is filled with deionized water, and the water level of the deionized water is higher than the soothing wheel.

[0014] As a further improvement of the present invention, the alkali removal component includes an annular plate, which is fixedly connected to the upper end of the recovery box, the inner end of the annular plate is fixedly connected to the alkali removal cotton, and a threading hole is opened in the middle of the alkali removal cotton, the annular plate is provided with a liquid storage box, the liquid storage box is filled with an acidic solution, the inner end of the liquid storage box is slidably connected to a magnetic push plate, the lower end of the magnetic push plate is fixedly connected to a piston plate, the upper end of the liquid storage box is fixedly connected to an electromagnetic plate, and the side end of the liquid storage box is provided with a sealing plug.

[0015] As a further improvement of the present invention, the alkali removal component also includes a clean water tank, a clean water tank is opened in the middle of the upper half of the annular plate, a water spray head is fixedly connected to the inner end of the annular plate, and the water spray head is connected to the clean water tank, and a recovery tank is opened in the middle of the lower half of the annular plate.

[0016] As a further improvement of the present invention, a soft brush strip is provided at the outer end of the washing roller.

[0017] Compared with the prior art, the advantages of the present invention are: The purpose of this scheme is to detect the uniformity of the dyed cotton yarn through the supplementary dyeing component, so as to supplement the dyeing of the less dyed or missed dyed parts, and to detect the color difference of the cotton yarn by the threading tube close to the cotton yarn. If the color difference is lower than the predetermined value, the air supply device is started to inflate the annular air bag, so that the annular air bag expands and squeezes the annular elastic cotton close to the cotton yarn, and the dye liquid releases the dye liquid to the annular elastic cotton to perform secondary dyeing on this part of the cotton yarn, and then the neutralization of the dyed cotton yarn is detected by the alkali detection box to prevent the residual alkaline substances, and the cotton yarn slowly enters the alkali detection box and passes through the soothing wheel, and the liquid in the liquid storage box is detected by the detection pH meter. At the same time, the residual alkaline substances are removed by the alkali removal component, and the electromagnetic plate is activated to magnetize the piston plate when the alkaline value of the pH meter is detected to push the acid solution into the de-alkali cotton, and the de-alkali cotton is used to de-alkali this part of the cotton yarn to prevent the residual alkaline substances from damaging the cotton and other cellulose fibers, thereby improving the fiber strength and durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a side cross-sectional structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the side cross-sectional structure of the re-dyeing component of the present invention; Figure 4 It is a schematic diagram of the side cross-sectional structure of the alkali detection box of the present invention; Figure 5 It is a schematic diagram of the side cross-sectional structure of the alkali removal component of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram at A in the middle.

[0019] Description of the numbers in the figure: 1. Dyeing chamber; 2. Dyeing box; 3. Washing box; 4. Mounting plate; 5. Pay-off roller; 6. Take-up roller; 7. Auxiliary roller; 8. Dyeing roller; 9. Washing roller; 10. First delivery box; 11. Second delivery box; 12. Heating plate; 13. Monitoring pH meter; 14. Water storage tank; 15. Rinse head; 16. Recovery box; 17. Pump; 18. Supplementary dyeing assembly; 181. Threading drum; 182. Colorimeter; 183. Ring-shaped inflatable bag; 184 , annular elastic cotton; 185, dye liquid; 186, air supply equipment; 19, alkali detection box; 191, liquid storage box; 192, auxiliary wheel; 193, soothing wheel; 194, detection pH meter; 20, alkali removal component; 201, annular plate; 202, alkali removal cotton; 203, liquid storage box; 204, magnetic push plate; 205, piston plate; 206, electromagnetic plate; 207, sealing plug; 208, clean water tank; 209, sprinkler head; 210, recovery tank. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0021] The first implementation method:

[0022] See also Figure 1-6 A cotton yarn continuous dyeing device comprises a dyeing chamber 1, a re-dyeing component 18, an alkali detection box 19 and an alkali removal component 20. The inner ends of the dyeing chamber 1 are respectively fixedly connected with a dyeing box 2 and a washing box 3. The inner wall of the dyeing box 2 is fixedly connected with a monitoring pH meter 13. The inner end of the dyeing box 2 is fixedly connected with a heating plate 12, and the monitoring pH meter 13 is located on the inner wall of the heating plate 12. When the cotton yarn is dyed in the dyeing box 2, the heating plate 12 is used to heat the dye liquor to an appropriate temperature, usually 60°C to 80°C, to accelerate the reaction process. At the same time, the monitoring pH meter 13 monitors the alkalinity in the dye liquor.

[0023] A pair of mounting plates 4 are fixedly connected to the outer end of the dyeing chamber 1, and a pay-off roller 5 and a take-up roller 6 are fixedly connected to the upper ends of the pair of mounting plates 4, respectively. A plurality of auxiliary rollers 7 are arranged in the dyeing chamber 1, and the plurality of auxiliary rollers 7 are respectively located at the upper ends of the dyeing box 2 and the washing box 3, a dyeing roller 8 is fixedly connected to the inner end of the dyeing box 2, and a washing roller 9 is fixedly connected to the inner end of the washing box 3, and a soft brush strip is arranged at the outer end of the washing roller 9, and when the cotton yarn passes through the washing roller 9 for washing, the soft brush strip is used to brush the textiles during the rinsing process. This can help remove the dye particles adhering to the fibers.

[0024] The soft-bristle brush strip can also be replaced with a rubber scraper, which is suitable for flat textile surfaces, such as fabric strips. The rubber scraper can scrape off excess moisture and unfixed dyes on the surface, while reducing the dye carried away by moisture; the pressure roller, by applying pressure, the roller can help squeeze out excess moisture and chemicals from the fibers, while physically cleaning the textiles.

[0025] The upper inner wall of the dyeing chamber 1 is fixedly connected with a first delivery box 10, a second delivery box 11 and a water storage tank 14, and the first delivery box 10 and the second delivery box 11 are respectively provided with alkaline substances and acidic substances. A flushing head 15 is fixedly connected to the lower end of the water storage tank 14, and the first delivery box 10 and the second delivery box 11 are located above the dyeing box 2, and the water storage tank 14 is located above the washing box 3. Alkaline substances, usually sodium hydroxide, are delivered through the first delivery box 10 to increase the pH value, so as to promote the active groups of the dye to form covalent bonds with the fiber, so that the dyeing effect is more durable and the color is more stable. According to the monitoring of the pH meter 13, an appropriate amount of acidic substances is delivered from the second delivery box 11 to neutralize the residual alkali in the dye solution. Then, clean water is provided by the water storage tank 14 to use the flushing head 15 to fully wash the dyed cotton yarn and remove the unfixed dyes and chemicals.

[0026] A recovery box 16 is fixedly connected to the inner end of the dyeing chamber 1, and the recovery box 16 is located at the end of the washing box 3 away from the dyeing box 2. The recovery box 16 is connected to the washing box 3. A water pump 17 is provided at the connection between the recovery box 16 and the washing box 3, and the water pump 17 is located at the inner end of the recovery box 16. The water in the washing box 3 is pumped into the recovery box 16 through the water pump 17 for centralized recovery and treatment.

[0027] The re-dyeing component 18, the alkali detection box 19 and the alkali removal component 20 are all arranged inside the dyeing chamber 1. The re-dyeing component 18, the alkali detection box 19 and the alkali removal component 20 are fixedly connected to the upper end of the recovery box 16 in sequence, and one of the auxiliary rollers 7 is located at the upper end of the recovery box 16 away from the washing box 3. The cotton yarn is re-dyed, the alkali content is tested and the alkaline substances are removed in sequence through the re-dyeing component 18, the alkali detection box 19 and the alkali removal component 20.

[0028] The dyeing component 18 includes a threading drum 181, which is fixedly connected to the upper end of the recovery box 16. The inner end of the threading drum 181 close to the washing box 3 is fixedly connected to a colorimeter 182. The inner end of the threading drum 181 is inlaid with an annular air bag 183, and the inner end of the annular air bag 183 is fixedly connected to an annular elastic cotton 184. A liquid supply tank is opened in the middle of the upper half of the threading drum 181, and the liquid supply tank is filled with dye liquid 185. The liquid supply tank is fixed to the annular elastic cotton 184 through a liquid guide tube. The lower half of the threading tube 181 is inlaid with an air supply device 186, and the air supply device 186 is fixedly connected to the annular air bag 183. The cotton yarn passes through the colorimeter 182. According to the preset color difference value, if the color difference value of the cotton yarn is low, the air supply device 186 is started to inflate the annular air bag 183, so that the annular air bag 183 expands and squeezes the annular elastic cotton 184, so that the annular elastic cotton 184 wraps and fits tightly against the cotton yarn to supplement the dyeing of this part.

[0029] The alkali detection box 19 includes a liquid box 191, which is fixedly connected to the upper end of the recovery box 16, and a pair of auxiliary wheels 192 are rotatably connected to the upper end of the liquid box 191. The inner end of the liquid box 191 is fixedly connected to a soothing wheel 193, and the outer end of the liquid box 191 is fixedly connected to a detection pH meter 194, and the detection pH meter 194 penetrates the liquid box 191 and extends to the inside of the liquid box 191. The liquid box 191 is filled with deionized water, and the water level of the deionized water is higher than the soothing wheel 193. The cotton yarn slowly passes through the soothing wheel 193, and the deionized water is tested by the pH meter 194. If the alkalinity value rises, the alkali removal component 20 is started to remove the alkaline substance on the outer end of the cotton yarn. The deionized water can also be replaced by distilled water. This is because the water quality is pure and does not contain other chemicals, which can avoid interference with the pH value. At the same time, when the dyed cotton yarn enters the liquid box 191 containing alkaline deionized water, the alkaline substance there can also be used to quickly fix this part of the dye liquid.

[0030] It should be noted that only the rising change of the alkalinity value of the pH meter 194 is detected to start the de-alkali component 20, while the residual alkalinity in the deionized water is detected and the de-alkali component 20 cannot be started.

[0031] The de-alkali component 20 includes an annular plate 201, which is fixedly connected to the upper end of the recovery box 16. The inner end of the annular plate 201 is fixedly connected with a de-alkali cotton 202, and a threading hole is opened in the middle of the de-alkali cotton 202. A liquid storage box 203 is arranged in the annular plate 201, and the liquid storage box 203 is filled with an acidic solution. The inner end of the liquid storage box 203 is slidably connected with a magnetic push plate 204, and the lower end of the magnetic push plate 204 is fixedly connected with a piston plate 205. The upper end of the liquid storage box 203 is fixedly connected with an electromagnetic plate 206, and a sealing plug 207 is arranged at the side end of the liquid storage box 203. The de-alkali component 20 is triggered and started by the alkali detection box 19, so that the electromagnetic plate 206 activates the magnetization to repel the magnetic push plate 204, so that the piston plate 205 pushes the acidic solution in the liquid storage box 203 to be discharged and adsorbed on the de-alkali cotton 202, and the de-alkali cotton 202 is used to neutralize and remove the alkaline substances.

[0032] The de-alkali component 20 also includes a clean water tank 208. The clean water tank 208 is opened in the middle of the upper part of the annular plate 201. A water spray head 209 is fixedly connected to the inner end of the annular plate 201, and the water spray head 209 is connected to the clean water tank 208. A recovery tank 210 is opened in the middle of the lower part of the annular plate 201. The cotton yarn passing through the de-alkali component 20 is rinsed for the second time through the water spray head 209 to wash away the unfixed and other chemical substances, and the sewage flows into the recovery tank 210 for recovery.

[0033] Working principle: The pay-off roller 5 is used to pay off the yarn, and the take-up roller 6 is used to take up the yarn. When the cotton yarn passes through the dyeing roller 8, the first delivery box 10 delivers alkaline substances into the dye solution, and at the same time, the heating plate 12 is started to heat it to an appropriate temperature to accelerate the reaction process. Then, under the monitoring of the pH meter 13, according to the acid-base value of the pH meter 13, the acidic substances are delivered through the second delivery box 11 to neutralize the remaining alkaline substances. Then, through the washing box 3, under the action of the washing roller 9 and the soft brush, the unfixed dyes and chemical residues are washed away. Then, the cotton yarn passes through the colorimeter 182. According to the preset color difference value, if the color difference value of the cotton yarn is low, the air supply device 186 is started to inflate the annular air bag 183, so that the annular air bag 183 expands to squeeze the annular elastic cotton 184. Thereby, the annular elastic cotton 184 wraps and clings to the cotton yarn to supplement the dyeing of this part. The dyed cotton yarn slowly passes through the soothing wheel 193, and the deionized water is detected by the detection pH meter 194. If the alkalinity value rises, the alkali removal component 20 is started to remove the alkaline substance at the outer end of the cotton yarn. At the same time, when the cotton yarn after supplementary dyeing enters the liquid box 191 containing alkaline deionized water, the alkaline substance there can also be used to quickly fix this part of the dye liquid. The alkali detection box 19 triggers the start of the alkali removal component 20, so that the electromagnetic plate 206 activates the magnetization to repel the magnetic push plate 204, so that the piston plate 205 pushes the acidic solution in the liquid storage box 203 to be discharged and adsorbed on the alkali removal cotton 202, and the alkali removal cotton 202 is used to neutralize and remove the alkaline substance part.

[0034] It can be seen from the above technical solutions that the present invention has the following beneficial effects: The purpose of this scheme is to detect the uniformity of the dyed cotton yarn through the supplementary dyeing component 18, so as to supplement the dyeing of the less dyed or missed dyed parts, and to detect the color difference of the cotton yarn by the threading tube 181 close to the cotton yarn. If the color difference is lower than the predetermined value, the air supply device 186 is started to inflate the annular air bag 183, so that the annular air bag 183 expands and squeezes the annular elastic cotton 184 close to the cotton yarn, and the dye liquid 185 releases the dye liquid to the annular elastic cotton 184 to perform secondary dyeing on this part of the cotton yarn, and then the neutralization of the dyed cotton yarn is detected by the alkali detection box 19 to prevent alkali from The residual alkaline substances slowly enter the alkali detection box 19 through the cotton yarn and pass through the soothing wheel 193. The liquid in the liquid box 191 is detected by the detection pH meter 194. At the same time, the residual alkaline substances are removed by the alkali removal component 20. When the alkaline value of the pH meter 194 rises, the electromagnetic plate 206 is activated to magnetize the piston plate 205, so that the magnetic push plate 204 pushes the acidic solution into the alkali-removing cotton 202. The alkali-removing cotton 202 is used to remove the alkali of this part of the cotton yarn to prevent the residual alkaline substances from damaging the cotton and other cellulose fibers, thereby improving the fiber strength and durability.

[0035] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0036] In addition, it should be understood that although the present specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that those skilled in the art can understand.

Claims

1. A cotton yarn continuous dyeing device, characterized in that: include: A dyeing chamber (1), wherein the inner end of the dyeing chamber (1) is fixedly connected to a dyeing box (2) and a washing box (3), the inner wall of the dyeing box (2) is fixedly connected to a monitoring pH meter (13), the outer end of the dyeing chamber (1) is fixedly connected to a pair of mounting plates (4), the upper ends of the pair of mounting plates (4) are fixedly connected to a wire-releasing roller (5) and a wire-receiving roller (6), a plurality of auxiliary rollers (7) are arranged in the dyeing chamber (1), and the plurality of auxiliary rollers (7) are respectively located at the upper ends of the dyeing box (2) and the washing box (3); The inner end of the dyeing box (2) is fixedly connected to a dyeing roller (8), and the inner end of the washing box (3) is fixedly connected to a washing roller (9); The upper inner wall of the dyeing chamber (1) is respectively fixedly connected with a first delivery box (10), a second delivery box (11) and a water storage tank (14), and the first delivery box (10) and the second delivery box (11) are respectively provided with alkaline substances and acidic substances, a flushing head (15) is fixedly connected to the lower end of the water storage tank (14), and the first delivery box (10) and the second delivery box (11) are located above the dyeing chamber (2), and the water storage tank (14) is located above the washing chamber (3); A re-dyeing component (18), an alkali detection box (19) and an alkali removal component (20), wherein the re-dyeing component (18), the alkali detection box (19) and the alkali removal component (20) are all arranged inside the dyeing chamber (1); The inner end of the dyeing chamber (1) is fixedly connected to a recovery box (16), and the recovery box (16) is located at an end of the washing box (3) away from the dyeing box (2), the recovery box (16) is connected to the washing box (3), and a water pump (17) is provided at the connection between the recovery box (16) and the washing box (3), and the water pump (17) is located at the inner end of the recovery box (16); The re-dyeing component (18), the alkali detection box (19) and the alkali removal component (20) are fixedly connected to the upper end of the recovery box (16) in sequence, and one of the auxiliary rollers (7) is located at the upper end of the recovery box (16) away from the washing box (3); The re-dyeing component (18) comprises a threading barrel (181), the re-dyeing component (18) is fixedly connected to the upper end of the recovery box (16), the inner end of the threading barrel (181) close to the washing box (3) is fixedly connected to a colorimeter (182), the inner end of the threading barrel (181) is inlaid with an annular air bag (183), the inner end of the annular air bag (183) is fixedly connected to an annular elastic cotton (184), a liquid supply groove is provided in the middle of the upper half of the threading barrel (181), the liquid supply groove is filled with dye liquid (185), and the liquid supply groove is fixedly connected to the annular elastic cotton (184) via a liquid guide tube, and an air supply device (186) is inlaid on the side end of the lower half of the threading barrel (181), and the air supply device (186) is fixedly connected to the annular air bag (183).

2. A cotton yarn continuous dyeing device according to claim 1, characterized in that: A heating plate (12) is fixedly connected to the inner end of the dyeing box (2), and a monitoring pH meter (13) is located on the inner wall of the heating plate (12).

3. A cotton yarn continuous dyeing device according to claim 1, characterized in that: The alkali detection box (19) comprises a liquid storage box (191), the liquid storage box (191) is fixedly connected to the upper end of the recovery box (16), the upper end of the liquid storage box (191) is rotatably connected to a pair of auxiliary wheels (192), the inner end of the liquid storage box (191) is fixedly connected to a relief wheel (193), the outer end of the liquid storage box (191) is fixedly connected to a detection pH meter (194), and the detection pH meter (194) passes through the liquid storage box (191) and extends into the interior of the liquid storage box (191).

4. A cotton yarn continuous dyeing device according to claim 3, characterized in that: The liquid storage box (191) is filled with deionized water, and the water level of the deionized water is higher than the soothing wheel (193).

5. The cotton yarn continuous dyeing device according to claim 1, characterized in that: The de-alkali component (20) comprises an annular plate (201), wherein the annular plate (201) is fixedly connected to the upper end of the recovery box (16), an alkali-removing cotton (202) is fixedly connected to the inner end of the annular plate (201), and a threading hole is provided in the middle of the alkali-removing cotton (202), a liquid storage box (203) is provided in the annular plate (201), and the liquid storage box (203) is filled with an acid solution, a magnetic push plate (204) is slidably connected to the inner end of the liquid storage box (203), a piston plate (205) is fixedly connected to the lower end of the magnetic push plate (204), an electromagnetic plate (206) is fixedly connected to the upper end of the liquid storage box (203), and a sealing plug (207) is provided at the side end of the liquid storage box (203).

6. A cotton yarn continuous dyeing device according to claim 5, characterized in that: The de-alkali component (20) further comprises a clean water bin (208), wherein the clean water bin (208) is provided in the middle of the upper part of the annular plate (201), a water spray head (209) is fixedly connected to the inner end of the annular plate (201), and the water spray head (209) is connected to the clean water bin (208), and a recovery bin (210) is provided in the middle of the lower part of the annular plate (201).

7. A cotton yarn continuous dyeing device according to claim 1, characterized in that: The outer end of the washing roller (9) is provided with a soft brush strip.

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