Cotton yarn spinning yarn surface treatment method

Abstract

The invention discloses a cotton yarn textile yarn surface treatment method, which effectively decomposes natural impurities and chemical residues in cotton yarns through biological enzyme pretreatment so as to reduce the use of traditional chemical cleaning agents and realize a more environment-friendly production mode, and adopts a carbon dioxide supercritical extraction technology to carry out waterless dyeing, so that the production efficiency is greatly improved. Water resource consumption and sewage discharge are remarkably reduced, impurities in fibers can be more effectively removed through ultrasonic-assisted cleaning, mechanical damage to cotton yarn fibers is reduced, and therefore the yarn quality is improved, residual impurities are removed in the carbon dioxide supercritical extraction process through accurate adjustment of the temperature and the pressure, and the carbon dioxide supercritical extraction efficiency is improved. By combining a photocatalyst and a natural air drying technology, the air drying rate is increased, toxic substances on the surface of the cotton yarn can be degraded through a photocatalytic reaction, the antibacterial property of the cotton yarn is enhanced, the fragrance is improved, and fine inspection and purification are performed through an inspection tube and activated carbon.

Description

Technical Field

[0001] The invention relates to the technical field of yarn textile, and more specifically to a surface treatment method for cotton textile yarn. Background Art

[0002] Cotton yarn is a natural yarn made from cotton fibers and is widely used in a variety of textiles. It has excellent moisture absorption, breathability and softness, making the made clothing and home textiles both comfortable and durable. During the production process, cotton is first carefully cleaned and pre-treated, and then converted into yarn through ring or open-end spinning technology. Finally, cotton yarn will also undergo a series of surface treatments, such as combing, bleaching and mercerizing, to improve its performance and appearance texture to meet different application requirements.

[0003] Existing cotton yarn surface treatment technologies are designed to enhance the performance and appearance of yarns, including combing to improve fiber uniformity and strength, bleaching to improve dyeing effects, mercerizing to increase gloss and smoothness, and shrinkage resistance to improve dimensional stability. In addition, antibacterial and anti-odor treatments keep textiles clean and hygienic by inhibiting bacterial growth, while soft treatments increase the softness of yarns and improve wearing comfort. These technologies not only improve the functionality of cotton yarns, but also expand their applications in various textile products, meeting the market demand for high-quality textiles.

[0004] Although existing cotton yarn surface treatment technologies have effectively improved the performance and appearance of yarn, these technologies have significant shortcomings in terms of environmental protection and sustainability. Key issues include the use of environmentally harmful chemicals, high energy consumption in the treatment process, and the potential health risks to consumers caused by residual chemicals after cotton yarn surface treatment.

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

[0006] The object of the present invention is to provide a method for surface treatment of cotton yarn 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:

[0008] A method for surface treatment of cotton yarn, comprising the following steps:

[0009] S1. Pre-treating cotton yarn using specific biological enzymes;

[0010] S2, using ultrasonic technology to assist in cleaning the treated cotton yarn;

[0011] S3, using carbon dioxide supercritical extraction technology to remove residual impurities in cotton yarn and perform waterless dyeing treatment;

[0012] S4, treating the dyed cotton yarn by natural air drying with a photocatalyst through a treatment device;

[0013] S5. The air-dried cotton yarn is inspected and purified by the processing equipment.

[0014] As a further improvement of the present invention, the preprocessing in step S1 specifically includes the following steps:

[0015] S101, selecting suitable enzymes including cellulase, pectinase and protease;

[0016] S102, preparing a solution with an enzyme having a concentration of 0.1% to 2% and water under the same conditions at a temperature of 40°C to 60°C and a pH of 5 to 9;

[0017] S103, completely immerse the cotton yarn in the pretreatment enzyme solution, and soak it for 8h-24h with intermittent stirring.

[0018] As a further improvement of the present invention, the frequency of the ultrasonic technology in step S2 is between 20kHz and 40kHz, and a periodic ultrasonic pulse mode is adopted.

[0019] As a further improvement of the present invention, in the carbon dioxide supercritical extraction technology in step S3, the temperature is adjusted to 40° C.-80° C. and the pressure is adjusted to 100 bar-400 bar.

[0020] As a further improvement of the present invention, the photocatalyst in step S4 is titanium dioxide, and naturally extracted vegetable oil is added.

[0021] As a further improvement of the present invention, the processing equipment in step S4 includes a workbench, a pair of processing frames are fixedly connected to the upper end of the workbench, a plurality of processing tubes are fixedly connected between the pair of processing frames, a plurality of pairs of guide wheels corresponding to the processing tubes are fixedly connected to the inner wall of the processing frame on one side close to the processing tube, a retracting roller is rotatably connected to the inner end of the processing frame, a water absorber is installed on the upper end of the workbench, and the water absorber is located between the pair of water absorbers.

[0022] As a further improvement of the present invention, the processing tube includes a transparent half tube, one end of the transparent half tube close to the processing frame is fixedly connected to an inspection tube, a plurality of convex panels are fixedly connected in the middle of the transparent half tube, a plurality of mounting grooves are opened at the upper end of the transparent half tube, and the plurality of mounting grooves and the plurality of convex panels are staggered, and an electric fan is rotatably connected in the middle of the mounting groove.

[0023] As a further improvement of the present invention, the convex panel includes a convex mirror, which is fixedly connected to the middle of the transparent half tube, a dark panel is fixedly connected to the lower end of the convex mirror, and a plurality of evenly distributed micro photovoltaic panels are fixedly connected to the middle of the convex mirror.

[0024] As a further improvement of the present invention, the inspection tube includes an inspection cylinder, which is fixedly connected to one end of a transparent half tube, and the end of the inspection tube away from the transparent half tube is fixedly connected to a demassification ring, and the inner wall of the inspection tube away from the demassification ring is fixedly connected to a spectrometer, and the inner end of the demassification ring is installed with a mounting ring, and the inner end of the mounting ring is inlaid with an inflatable bag, and the inner end of the inflatable bag is fixedly connected to an adsorption gauze bag, and the adsorption gauze bag is filled with activated carbon.

[0025] As a further improvement of the present invention, the inspection tube further comprises a pair of magnetic rings, which are respectively fixedly connected to the inner end of the demassing ring and the outer end of the mounting ring, and an auxiliary pull ring is fixedly connected to one end of the mounting ring away from the inspection tube.

[0026] Compared with the prior art, the advantages of the present invention are:

[0027] (1) This scheme can effectively decompose natural impurities and chemical residues in cotton yarn by using bio-enzyme to pretreat cotton yarn, reducing the use of traditional chemical cleaning agents and being more environmentally friendly. At the same time, it uses carbon dioxide supercritical extraction technology for waterless dyeing, reducing water resource consumption and sewage discharge, and supporting environmental protection and resource conservation.

[0028] (2) This scheme uses ultrasonic waves for auxiliary cleaning, which can more effectively remove impurities from the fibers, while reducing mechanical damage to the cotton yarn fibers, improving the quality of the yarn, adjusting the temperature and pressure to optimize the extraction process, effectively removing residual impurities, and improving dyeing quality and color fastness.

[0029] (3) This scheme combines photocatalysts and natural air drying to accelerate the air drying rate. At the same time, photocatalysts are used to degrade toxic substances on the surface of cotton yarn, enhancing the antibacterial property and fragrance of the cotton yarn. The treated cotton yarn is carefully inspected and purified through inspection tubes and activated carbon systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a flowchart of the processing method steps of the present invention;

[0031] Figure 2 It is a schematic diagram of the overall structure of the processing equipment of the present invention;

[0032] Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0033] Figure 4It is a schematic diagram of the front cross-sectional structure of the convex panel of the present invention;

[0034] Figure 5 It is a schematic diagram of the side cross-sectional structure of the inspection tube of the present invention;

[0035] Figure 6 It is a comparison table of experimental data of the present invention and prior art.

[0036] Description of the numbers in the figure:

[0037] 1. Workbench; 2. Processing frame; 3. Processing tube; 31. Transparent half tube; 32. Convex panel; 321. Convex mirror; 322. Dark panel; 323. Micro photovoltaic panel; 33. Inspection tube; 331. Inspection cylinder; 332. Demassification ring; 333. Spectrum analyzer; 334. Mounting ring; 335. Inflatable bag; 336. Adsorption yarn bag; 337. Magnetic ring; 338. Auxiliary pull ring; 34. Mounting slot; 35. Electric fan; 4. Guide wheel; 5. Retracting roller; 6. Water absorber. DETAILED DESCRIPTION

[0038] 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.

[0039] Embodiment 1:

[0040] See also Figure 1-5 , a cotton yarn surface treatment method, comprising the following steps:

[0041] S1. Pre-treating cotton yarn using specific biological enzymes;

[0042] S2, using ultrasonic technology to assist in cleaning the treated cotton yarn;

[0043] S3, using carbon dioxide supercritical extraction technology to remove residual impurities in cotton yarn and perform waterless dyeing treatment;

[0044] S4, treating the dyed cotton yarn by natural air drying with a photocatalyst through a treatment device;

[0045] S5, inspecting and purifying the air-dried cotton yarn by the processing equipment;

[0046] The cotton yarn is pretreated with biological enzymes to decompose natural impurities and possible chemical residues in the cotton yarn; ultrasonic technology is used for auxiliary cleaning to further remove decomposition products and incompletely decomposed residues; carbon dioxide supercritical extraction technology is used to remove residual impurities in the cotton yarn, and waterless dyeing treatment is performed; natural air drying and photocatalyst treatment are used to degrade and neutralize toxic substances that may remain on the surface of the cotton yarn; after all treatment steps, the treated cotton yarn is inspected by processing equipment.

[0047] The preprocessing in step S1 specifically includes the following steps:

[0048] S101, selecting suitable enzymes including cellulase, pectinase and protease;

[0049] S102, preparing a solution of an enzyme having a concentration of 0.1% at a temperature of 40° C. and a pH of 5 with water under the same conditions;

[0050] S103, completely immersing the cotton yarn in the pretreatment enzyme solution, and intermittently stirring and immersing for 8 hours;

[0051] Through bio-enzyme pretreatment, not only the quality and processing performance of cotton yarn can be improved, but also the impact on the environment can be reduced.

[0052] In step S2, the frequency of the ultrasonic technology is between 20 kHz to maximize the cleaning efficiency and reduce energy consumption, and a periodic ultrasonic pulse mode is adopted to reduce the mechanical damage to the cotton yarn fibers and improve the cleaning effect.

[0053] In step S3, the temperature is adjusted to 40° C. and the pressure is adjusted to 100 bar in the carbon dioxide supercritical extraction technology. The removal efficiency of residual impurities is optimized by adjusting the temperature and pressure during the treatment process.

[0054] In step S4, the photocatalyst uses titanium dioxide and is added with naturally extracted plant oils, such as lavender oil and tea tree oil, to provide natural fragrance and enhance antibacterial properties.

[0055] The processing equipment in step S4 includes a workbench 1, a pair of processing frames 2 are fixedly connected to the upper end of the workbench 1, a plurality of processing tubes 3 are fixedly connected between the pair of processing frames 2, a plurality of pairs of guide wheels 4 corresponding to the processing tubes 3 are fixedly connected to the inner wall of the processing frame 2 close to the processing tubes 3, a retractable roller 5 is rotatably connected to the inner end of the processing frame 2, a water absorber 6 is installed at the upper end of the workbench 1, the water absorber 6 is an existing device similar to a vacuum cleaner, which absorbs moisture from the bottom of the cotton yarn while also promoting air flow, and the water absorber 6 is located between the pair of water absorbers 6, and the cotton yarn is wound and carried by the retractable roller 5 in the processing frame 2, so that the cotton yarn passes through the middle of the processing tube 3 under the guidance of the two pairs of guide wheels 4, and the processed cotton yarn is dried and inspected by the processing tube 3.

[0056] The processing tube 3 includes a transparent half tube 31, one end of the transparent half tube 31 close to the processing frame 2 is fixedly connected to an inspection tube 33, a plurality of convex panels 32 are fixedly connected in the middle of the transparent half tube 31, a plurality of mounting grooves 34 are opened at the upper end of the transparent half tube 31, and the plurality of mounting grooves 34 are staggered with the plurality of convex panels 32, an electric fan 35 is rotatably connected in the middle of the mounting groove 34, the convex panel 32 captures the sunlight and irradiates it on the surface of the cotton yarn for natural air drying, and the rotation of the plurality of electric fans 35 is used to accelerate the flow of air around the cotton yarn, thereby improving the air drying rate, and then the inspection tube 33 is used to inspect and purify the air-dried cotton yarn.

[0057] The convex panel 32 includes a convex mirror 321, which is fixedly connected to the middle of the transparent half tube 31. A dark panel 322 is fixedly connected to the lower end of the convex mirror 321. A plurality of evenly distributed micro photovoltaic panels 323 are fixedly connected to the middle of the convex mirror 321. The convex mirror 321 can better refract light to the surface of the cotton yarn, and the dark panel 322 can absorb heat to increase its temperature, thereby improving the efficiency of air-drying the cotton yarn, and utilizing the micro photovoltaic panel 323 to provide power for the electric fan 35.

[0058] The inspection tube 33 includes an inspection cylinder 331, which is fixedly connected to one end of the transparent half tube 31. The end of the inspection cylinder 331 away from the transparent half tube 31 is fixedly connected with a decontamination ring 332. The inner wall of the inspection cylinder 331 away from the decontamination ring 332 is fixedly connected with a spectrometer 333. The inner end of the decontamination ring 332 is installed with a mounting ring 334. The inner end of the mounting ring 334 is inlaid with an inflatable bag 335. The inner end of the inflatable bag 335 is fixedly connected with an adsorption gauze bag 336. The adsorption gauze bag 336 is filled with activated carbon. After the spectrometer 333 detects that there are chemical substances remaining on the surface of the cotton yarn, the air pump is started to inflate the inflatable bag 335 to expand it and squeeze the adsorption gauze bag 336, so that the adsorption gauze bag 336 shrinks inward until it wraps the cotton yarn, and the activated carbon is used to absorb the chemical substances on its outer surface, thereby effectively playing a purification role.

[0059] The inspection tube 33 also includes a pair of magnetic rings 337, which are respectively fixedly connected to the inner end of the decontamination ring 332 and the outer end of the mounting ring 334. The mounting ring 334 is fixedly connected to one end away from the inspection tube 331 with an auxiliary pull ring 338. After the mounting ring 334 and its entirety are taken out by pulling the auxiliary pull ring 338, the adsorption gauze bag 336 and the activated carbon are replaced, thereby improving the purification efficiency.

[0060] Embodiment 2:

[0061] A method for surface treatment of cotton yarn, comprising the following steps:

[0062] S1. Pre-treating cotton yarn using specific biological enzymes;

[0063] S2, using ultrasonic technology to assist in cleaning the treated cotton yarn;

[0064] S3, using carbon dioxide supercritical extraction technology to remove residual impurities in cotton yarn and perform waterless dyeing treatment;

[0065] S4, treating the dyed cotton yarn by natural air drying with a photocatalyst through a treatment device;

[0066] S5, inspecting and purifying the air-dried cotton yarn by the processing equipment;

[0067] The cotton yarn is pretreated with biological enzymes to decompose natural impurities and possible chemical residues in the cotton yarn; ultrasonic technology is used for auxiliary cleaning to further remove decomposition products and incompletely decomposed residues; carbon dioxide supercritical extraction technology is used to remove residual impurities in the cotton yarn, and waterless dyeing treatment is performed; natural air drying and photocatalyst treatment are used to degrade and neutralize toxic substances that may remain on the surface of the cotton yarn; after all treatment steps, the treated cotton yarn is inspected by processing equipment.

[0068] The preprocessing in step S1 specifically includes the following steps:

[0069] S101, selecting suitable enzymes including cellulase, pectinase and protease;

[0070] S102, preparing a solution of 1% enzyme with water under the same conditions at a temperature of 50° C. and a pH of 7;

[0071] S103, completely immersing the cotton yarn in the pretreatment enzyme solution, and soaking for 16 hours with intermittent stirring;

[0072] Through bio-enzyme pretreatment, not only the quality and processing performance of cotton yarn can be improved, but also the impact on the environment can be reduced.

[0073] In step S2, the frequency of the ultrasonic technology is between 30kHz to maximize the cleaning efficiency and reduce energy consumption, and a periodic ultrasonic pulse mode is adopted to reduce the mechanical damage to the cotton yarn fibers and improve the cleaning effect.

[0074] In step S3, the temperature is adjusted to 60° C. and the pressure is adjusted to 250 bar in the carbon dioxide supercritical extraction technology. The temperature and pressure are adjusted during the treatment process to optimize the removal efficiency of residual impurities.

[0075] Embodiment 3:

[0076] A method for surface treatment of cotton yarn, comprising the following steps:

[0077] S1. Pre-treating cotton yarn using specific biological enzymes;

[0078] S2, using ultrasonic technology to assist in cleaning the treated cotton yarn;

[0079] S3, using carbon dioxide supercritical extraction technology to remove residual impurities in cotton yarn and perform waterless dyeing treatment;

[0080] S4, treating the dyed cotton yarn by natural air drying with a photocatalyst through a treatment device;

[0081] S5, inspecting and purifying the air-dried cotton yarn by the processing equipment;

[0082] The cotton yarn is pretreated with biological enzymes to decompose natural impurities and possible chemical residues in the cotton yarn; ultrasonic technology is used for auxiliary cleaning to further remove decomposition products and incompletely decomposed residues; carbon dioxide supercritical extraction technology is used to remove residual impurities in the cotton yarn, and waterless dyeing treatment is performed; natural air drying and photocatalyst treatment are used to degrade and neutralize toxic substances that may remain on the surface of the cotton yarn; after all treatment steps, the treated cotton yarn is inspected by processing equipment.

[0083] The preprocessing in step S1 specifically includes the following steps:

[0084] S101, selecting suitable enzymes including cellulase, pectinase and protease;

[0085] S102, preparing a solution of an enzyme having a concentration of 2% at a temperature of 60° C. and a pH of 9 with water under the same conditions;

[0086] S103, completely immersing the cotton yarn in the pretreatment enzyme solution, and soaking for 24 hours with intermittent stirring;

[0087] Through bio-enzyme pretreatment, not only the quality and processing performance of cotton yarn can be improved, but also the impact on the environment can be reduced.

[0088] In step S2, the frequency of the ultrasonic technology is between 40kHz to maximize the cleaning efficiency and reduce energy consumption, and a periodic ultrasonic pulse mode is adopted to reduce the mechanical damage to the cotton yarn fibers and improve the cleaning effect.

[0089] In step S3, the temperature is adjusted to 80° C. and the pressure is adjusted to 400 bar in the carbon dioxide supercritical extraction technology. The temperature and pressure are adjusted during the treatment process to optimize the removal efficiency of residual impurities.

[0090] according to Figure 6 It can be concluded from the table that the present invention not only improves product quality, but also reduces the burden on the environment.

[0091] It can be seen from the above technical solutions that the present invention has the following beneficial effects:

[0092] The present invention effectively decomposes natural impurities and chemical residues in cotton yarn through bio-enzyme pretreatment, thereby reducing the use of traditional chemical cleaning agents and achieving a more environmentally friendly production method. Carbon dioxide supercritical extraction technology is used for waterless dyeing. This technology significantly reduces water resource consumption and sewage discharge, further supporting environmental protection and resource conservation. Ultrasonic assisted cleaning with a frequency of 20kHz to 40kHz can more effectively remove impurities in the fiber and reduce mechanical damage to the cotton yarn fiber, thereby improving the quality of the yarn. The precise adjustment of temperature and pressure allows the carbon dioxide supercritical extraction process to remove residual impurities while also improving the quality and color fastness of dyeing. In the post-processing stage, the combination of photocatalyst and natural air drying technology not only accelerates the air drying rate, but also degrades toxic substances on the surface of the cotton yarn through photocatalytic reactions, thereby enhancing the antibacterial properties of the cotton yarn and improving the fragrance. After careful inspection and purification by the inspection tube 3 and the activated carbon system.

[0093] 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.

[0094] 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 method for surface treatment of cotton yarn, characterized in that: The following steps are involved: S1. Pre-treating cotton yarn using specific biological enzymes; S2, using ultrasonic technology to assist in cleaning the treated cotton yarn; S3, using carbon dioxide supercritical extraction technology to remove residual impurities in cotton yarn and perform waterless dyeing treatment; S4, treating the dyed cotton yarn by natural air drying with a photocatalyst through a treatment device; S5. The air-dried cotton yarn is inspected and purified by the processing equipment.

2. A method for surface treatment of cotton yarn according to claim 1, characterized in that: The pre-processing in step S1 specifically includes the following steps: S101, selecting suitable enzymes including cellulase, pectinase and protease; S102, preparing a solution with an enzyme having a concentration of 0.1% to 2% and water under the same conditions at a temperature of 40°C to 60°C and a pH of 5 to 9; S103, completely immerse the cotton yarn in the pretreatment enzyme solution, and soak it for 8h-24h with intermittent stirring.

3. The method for surface treatment of cotton yarn according to claim 1, characterized in that: The ultrasonic technology frequency in step S2 is between 20kHz and 40kHz, and a periodic ultrasonic pulse mode is adopted.

4. The method for surface treatment of cotton yarn according to claim 1, characterized in that: In the step S3, the temperature in the carbon dioxide supercritical extraction technology is adjusted to 40° C.-80° C. and the pressure is adjusted to 100 bar-400 bar.

5. The method for surface treatment of cotton yarn according to claim 1, characterized in that: In step S4, the photocatalyst is titanium dioxide and is added with naturally extracted vegetable oil.

6. A method for surface treatment of cotton yarn according to claim 1, characterized in that: The processing equipment in step S4 comprises a workbench (1), a pair of processing frames (2) are fixedly connected to the upper end of the workbench (1), a plurality of processing tubes (3) are fixedly connected between the pair of processing frames (2), a plurality of pairs of guide wheels (4) corresponding to the processing tubes (3) are fixedly connected to the inner wall of the processing frame (2) on one side close to the processing tubes (3), a retractable roller (5) is rotatably connected to the inner end of the processing frame (2), a water absorber (6) is installed on the upper end of the workbench (1), and the water absorber (6) is located between the pair of water absorbers (6).

7. A cotton yarn surface treatment method according to claim 6, characterized in that: The processing tube (3) comprises a transparent half tube (31), one end of the transparent half tube (31) close to the processing frame (2) is fixedly connected to a test tube (33), a plurality of convex panels (32) are fixedly connected in the middle of the transparent half tube (31), a plurality of mounting grooves (34) are opened at the upper end of the transparent half tube (31), and the plurality of mounting grooves (34) and the plurality of convex panels (32) are staggeredly distributed, and an electric fan (35) is rotatably connected in the middle of the mounting groove (34).

8. A method for surface treatment of cotton yarn according to claim 7, characterized in that: The convex panel (32) comprises a convex mirror (321), the convex mirror (321) is fixedly connected in the middle of the transparent half tube (31), a dark panel (322) is fixedly connected at the lower end of the convex mirror (321), and a plurality of uniformly distributed micro photovoltaic panels (323) are fixedly connected in the middle of the convex mirror (321).

9. A method for surface treatment of cotton yarn according to claim 7, characterized in that: The inspection tube (33) comprises an inspection tube (331), wherein the inspection tube (331) is fixedly connected to one end of the transparent half tube (31), and the end of the inspection tube (331) away from the transparent half tube (31) is fixedly connected to a decontamination ring (332), and the inner wall of the inspection tube (331) away from the decontamination ring (332) is fixedly connected to a spectrometer (333), and the inner end of the decontamination ring (332) is equipped with a mounting ring (334), and the inner end of the mounting ring (334) is inlaid with an inflatable bag (335), and the inner end of the inflatable bag (335) is fixedly connected to an adsorption gauze bag (336), and the adsorption gauze bag (336) is filled with activated carbon.

10. A method for surface treatment of cotton yarn according to claim 9, characterized in that: The inspection tube (33) further comprises a pair of magnetic rings (337), wherein the pair of magnetic rings (337) are respectively fixedly connected to the inner end of the demassing ring (332) and the outer end of the mounting ring (334), and an auxiliary pull ring (338) is fixedly connected to one end of the mounting ring (334) away from the inspection cylinder (331).

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