Method for dyeing purple by using strobilanthes

Abstract

The invention discloses a method for dyeing purple with strobilanthes, and relates to the technical field of dyeing. The method for dyeing purple with strobilanthes cusia comprises S1, raw material preparation: picking fresh strobilanthes cusia leaves, washing the picked leaves with clear water, and removing dust and impurities on the surfaces, S2, dye liquor preparation: putting the washed strobilanthes cusia leaves into a clean soaking fermentation device according to the weight ratio of the fresh strobilanthes cusia leaves to water being 1: 500, soaking the soaked strobilanthes cusia leaves in water for 1-2 hours, and carrying out fermentation for 1-2 hours to obtain the dye liquor. S3, a dyeing process: taking the soaked liquid for dyeing, and weighing the dyeing liquid according to the proportion of 10 times of the weight of the fabric. It is guaranteed that the natural strobilanthes cusia leaves are used in the method, no chemical auxiliaries need to be added, operation is easy and convenient, effective dyeing can be achieved within a short time, and purple obtained through dyeing has good light fastness and washing fastness and is suitable for silk fabrics, chinlon and other different kinds of fiber fabrics.

Description

Technical Field

[0001] The invention relates to the technical field of dyeing, in particular to a method for dyeing purple using indigo. Background Art

[0002] In recent years, plant indigo (especially dyeing with indigo leaves) has attracted much attention due to its sustainability and cultural value. However, the industrialization process is still limited by the supply of indigo raw materials, dyeing efficiency, cost control and the stability of large-scale production. Existing research has not yet formed a mature industrial solution. The equipment scale is adjusted according to the dyeing object (fabric or silk thread) to achieve flexible production. Fabric dyeing uses large immersion tanks equipped with robotic arms to flip to ensure uniformity. Silk thread dyeing uses small circulating dye vats combined with yarn reels to avoid entanglement.

[0003] However, the dyeing methods currently available on the market are inefficient, costly, and cannot be scaled up when used to dye purple. The reduction efficiency and color fastness cannot be improved, while water consumption and the amount of chemical additives used increase, resulting in a high overall cost. Summary of the Invention

[0004] The object of the present invention is to provide a method for dyeing purple using indigo to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a method for dyeing purple using indigo, comprising the following steps:

[0006] S1. Raw material preparation: Pick fresh indigofera leaves, wash them with clean water, and remove surface dust and impurities;

[0007] S2 dye preparation: according to the ratio of fresh blue leaves and water is 1: 500 (weight ratio), the washed blue leaves into a clean soaking fermentation device, filter the residue leaves available dye liquid;

[0008] S3 dyeing process: take the liquid after soaking for dyeing, according to the ratio of 10 times the weight of the fabric to take the dye;

[0009] The immersion fermentation device includes a base, an upper surface of the base is provided with a storage assembly, one side of the storage assembly is provided with a cleaning assembly, the storage assembly includes a shell fixedly mounted on the base, one side of the shell is connected to a slag discharge pipe, and the front surface of the shell is connected to a liquid discharge pipe;

[0010] The cleaning assembly includes a mesh plate fixedly installed inside the shell, a push rod and a cleaning rod are inserted on one side of the shell, a scraper is fixedly installed on one end of the push rod, and a rubber plate is fixedly installed on one end of the cleaning rod.

[0011] Preferably, the top of the shell is connected to a feed pipe, the top of the feed pipe is connected to a hopper, the top of the liquid outlet pipe is fixedly installed with a plug plate, the top of the plug plate is fixedly installed with a baffle, a screw rod is inserted on the baffle, the bottom of the screw rod is rotatably connected to the top of the liquid outlet pipe through a bearing, a rotating disk is fixedly installed on the top of the screw rod, a wire hole for the screw rod to pass through is opened on the baffle, and the wire hole is threadedly connected to the screw rod.

[0012] Through the provided screw rod, the position of the baffle can be easily adjusted during use, thereby facilitating its position adjustment, and also facilitating the position adjustment of the plug board, which is convenient for subsequent use.

[0013] Preferably, a gate plate is inserted at the top of the slag discharge pipe, a horizontal plate is fixedly installed on the top of the gate plate, a vertical plate is fixedly installed on the top of the shell, a connecting plate is fixedly installed on one side of the vertical plate, a motor is provided at the bottom of the connecting plate, a threaded rod is fixedly installed on the output shaft of the motor, the bottom of the threaded rod passes through the horizontal plate and extends to the outside of the horizontal plate, a threaded hole for the threaded rod to pass through is opened on the horizontal plate, and the threaded hole is threadedly connected to the threaded rod.

[0014] The gate plate is provided to facilitate the plugging operation of the slag discharge pipe during use, thereby facilitating subsequent opening and positioning operations, thereby also improving the convenience of using the slag discharge pipe.

[0015] Preferably, a bolt is inserted into the connecting plate, the bottom of the bolt is threadedly connected to the top of the motor, and a threaded hole is opened on the connecting plate for the bolt to pass through, the bottom of the threaded rod is sleeved with a sleeve, and the bottom of the sleeve is fixedly connected to the top of the slag discharge pipe.

[0016] The provided sleeve can limit the bottom of the threaded rod during use, thereby preventing the threaded rod from shaking during use and maintaining the stability of the threaded rod.

[0017] Preferably, a circular tube is provided on one side of the scraper, a return spring is fixedly installed on one side of the inner wall of the circular tube, a slide is fixedly installed on one end of the return spring, a touch switch is fixedly installed on one side of the slide, one side of the touch switch passes through the circular tube and extends to the outside of the circular tube, a protective plate is fixedly installed on one end of the touch switch, one side of the protective plate contacts one side of the inner wall of the shell, a circular hole is provided on one side of the circular tube for the touch switch to pass through, the inner wall of the circular hole is slidably connected to the surface of the touch switch, a groove is provided on the bottom of the rubber plate, an extrusion spring is fixedly installed on the inner bottom wall of the groove, a silicone plate is fixedly installed on the top of the extrusion spring, and bristles are fixedly installed on the top of the silicone plate.

[0018] Preferably, a cover body is fixedly installed on one side of the shell, one end of the push rod and the cleaning rod is fixedly connected through an oblong plate, a threaded column is inserted into one side of the cover body, one end of the threaded column located inside the cover body passes through the oblong plate and extends to the outside of the oblong plate, a threaded hole for the threaded column to pass through is provided on the oblong plate, the threaded hole is threadedly connected to the threaded column, one end of the threaded column is rotatably connected to one side of the shell through a bearing, and a circular hole for the threaded column to pass through is provided on one side of the cover body.

[0019] By setting up a storage component and a cleaning component, the screen plate can be cleaned and the waste residue can be discharged at the same time during use, thereby improving the purity of the liquid during use, avoiding impurities in the dyeing liquid, reducing the impact during dyeing, and improving the color uniformity and dyeing efficiency of the fabric during dyeing.

[0020] Preferably, the soaking step is to soak the leaves in clean water at room temperature for 48 hours, during which the indirubin component is extracted from the leaves of the indigofera scabra.

[0021] Preferably, before dyeing, the dye liquor needs to be poured into a heat-resistant container and heated to boiling. After boiling, the fabric to be dyed is completely immersed in the boiling dye liquor and dyed at a temperature of 100°C for 10 minutes. During the dyeing process, the fabric is properly stirred to ensure uniform dyeing. After dyeing is completed, the fabric is taken out, cooled and rinsed with clean water to remove excess dye liquor and impurities, and the fabric is hung to dry to complete the dyeing process.

[0022] Preferably, during the dyeing process, dyeing experiments of different types of fabrics are required, and the materials are as follows: 30 grams of fresh indigofera leaves are soaked in 15 liters of water for 48 hours according to the proportion, and 0.5 grams of different fabrics are selected for the experiment.

[0023] When dyeing, it is necessary to use dyeing experiments on different types of fabrics. The materials are as follows: take 30 grams of fresh indigo leaves, soak them in 15 liters of water according to proportion for 48 hours, and select 0.5 grams of different fabrics for experiments.

[0024] Specific steps: According to the method described in the invention summary, obtain a dye solution and heat it to boiling, then put different types of fabrics into the dye solution and boil and dye for 10 minutes. The experimental results show that the following fabrics can all be dyed into a stable purple color, indicating that this method is suitable for a wide range of applications for natural and synthetic fibers;

[0025] Dyeing experiments using dye solutions with different soaking times

[0026] Materials: Take 30 grams of fresh indigofera leaves and soak them in 15 liters of water for 24, 48, 54, and 72 hours respectively. Use 0.5 grams of silk crepe fabric for the experiment.

[0027] Steps: Following the method described in the Summary of the Invention, obtain a dye solution and heat it to a boil. Then, place the silk crepe satin fabric in the dye solution and boil for 10 minutes. Experimental results show that the dye solution produced a purple color after different soaking times. The dye solution produced a bluish-purple color after 24 hours of soaking, while the dye solution produced a purple-red color after 48, 54, and 72 hours of soaking.

[0028] Dyeing experiments using dye solutions with different storage times

[0029] Materials: 30 grams of fresh indigofera leaves were soaked in 15 liters of water for 48 hours and then stored for 2, 7, 10, and 15 days. 0.5 grams of silk crepe satin and 0.5 grams of plain nylon fabric were used for the experiment.

[0030] Steps: Follow the method described in the invention content to obtain a dye solution and heat it to boiling. Then, place the experimental fabrics into the dye solution and boil and dye for 10 minutes. The experimental results show that the dye solution stored for different times can all be dyed purple. The longest storage time is currently known to be 15 days.

[0031] Preferably, during the fermentation, the soaking fermentation treatment is carried out by controlling variables such as temperature and time, and then a screw press is used to crush the raw materials and separate the residue and juice. The pH and pigment concentration of the extracted juice are tested to ensure the extraction rate. During dyeing, specific dyeing parameters (temperature, time, stirring frequency, etc.) are controlled to achieve different dyeing effects. After dyeing is completed, post-processing is carried out by cleaning, and the wastewater is managed and recycled.

[0032] The method set up uses natural indigofera leaves, does not require the addition of any chemical additives, is easy to operate, and can achieve effective dyeing in a short time. The purple color obtained by dyeing has good light resistance and wash resistance, and is suitable for a variety of different types of fiber fabrics such as silk and nylon. This method improves reduction efficiency and color fastness, while reducing water consumption and the amount of chemical additives used, and reduces overall costs through process integration or by-product development.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] (1) The method of dyeing purple using indigo plant uses natural indigo plant leaves without adding any chemical additives. The method is easy to operate and can achieve effective dyeing in a short time. The purple color obtained by dyeing has good light resistance and wash resistance and is suitable for various types of fiber fabrics such as silk fabrics and nylon.

[0035] (2) This method of using indigo to dye purple improves reduction efficiency and color fastness, while reducing water consumption and the amount of chemical additives used, and reduces overall costs through process integration or by-product development.

[0036] (3) This method of using indigo to dye purple, by providing a storage component and a cleaning component, can facilitate the discharge of waste residues while cleaning the screen during use, thereby facilitating the improvement of the purity of the liquid during use, avoiding the inclusion of impurities in the dyeing liquid, reducing the impact of dyeing, and improving the color uniformity and dyeing efficiency of the fabric during dyeing. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention from a first viewing angle;

[0038] Figure 2 is a schematic diagram of the third perspective structure of the present invention;

[0039] Figure 3 This is a schematic diagram of the three-dimensional cross-sectional structure of the present invention from a first viewing angle;

[0040] Figure 4 This is a schematic diagram of a three-dimensional cross-sectional structure of the present invention from a second viewing angle;

[0041] Figure 5 Schematic diagram of the three-dimensional cross-sectional structure of the rubber sheet of the present invention;

[0042] Figure 6 For the present invention Figure 1 A schematic diagram of the structure at center A;

[0043] Figure 7 For the present invention Figure 2 A magnified schematic diagram of the structure at point B in the middle;

[0044] Figure 8 For the present invention Figure 3 A magnified schematic diagram of the structure at point C in the middle;

[0045] Figure 9 For the present invention Figure 4 A magnified schematic diagram of the structure at D in the middle;

[0046] Figure 10 The present invention is a flowchart of the industrial application of indigo plant stem and leaf dyeing.

[0047] In the figure: 1. Base; 2. Storage component; 200. Shell; 201. Slag discharge pipe; 202. Liquid discharge pipe; 203. Feed pipe; 204. Hopper; 205. Insert plate; 206. Baffle; 207. Screw rod; 208. Gate; 209. Horizontal plate; 210. Vertical plate; 211. Connecting plate; 212. Motor; 213. Threaded rod; 214. Bolt; 3. Cleaning component; 300. Mesh plate; 301. Push rod; 302. Cleaning rod; 303. Scraper; 304. Rubber plate; 305. Round tube; 306. Return spring; 307. Slide plate; 308. Touch switch; 309. Cover; 310. Oblong plate; 311. Threaded column; 312. Extrusion spring; 313. Silicone plate; 314. Bristles; 315. Protective plate. DETAILED DESCRIPTION

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0049] See also Figures 1-10 The present invention provides a technical solution: a method for dyeing purple using indigo, comprising the following steps:

[0050] S1. Raw material preparation: Pick fresh indigofera leaves, wash them with clean water, and remove dust and impurities on the surface.

[0051] S2. Preparation of dye solution: Place the washed indigofera leaves into a clean soaking and fermentation device at a weight ratio of fresh indigofera leaves to water of 1:500, and filter the residue leaves to obtain a usable dye solution.

[0052] S3. Dyeing process: Take the liquid after soaking for dyeing, and take the dye liquid in a ratio of 10 times the weight of the fabric.

[0053] The immersion fermentation device includes a base 1, a storage component 2 is provided on the upper surface of the base 1, a cleaning component 3 is provided on one side of the storage component 2, the storage component 2 includes a shell 200 fixedly mounted on the base 1, one side of the shell 200 is connected to a slag discharge pipe 201, and the front surface of the shell 200 is connected to a liquid discharge pipe 202.

[0054] The cleaning assembly 3 includes a mesh plate 300 fixedly mounted inside the housing 200 , a push rod 301 and a cleaning rod 302 are inserted into one side of the housing 200 , a scraper 303 is fixedly mounted on one end of the push rod 301 , and a rubber plate 304 is fixedly mounted on one end of the cleaning rod 302 .

[0055] See also Figure 1-Figure 2 and Figure 6-Figure 7 The top of the shell 200 is connected to the feed pipe 203, and the top of the feed pipe 203 is connected to the hopper 204. The top of the liquid outlet pipe 202 is fixedly installed with a plug plate 205, and the top of the plug plate 205 is fixedly installed with a baffle 206. A screw rod 207 is inserted on the baffle 206, and the bottom of the screw rod 207 is rotatably connected to the top of the liquid outlet pipe 202 through a bearing. A rotating disk is fixedly installed on the top of the screw rod 207, and a wire hole for the screw rod 207 to pass through is opened on the baffle 206. The wire hole is threadedly connected to the screw rod 207. The screw rod 207 is arranged, which makes it convenient to adjust the position of the baffle 206 during use, thereby facilitating its position adjustment, and also facilitates the position adjustment of the plug plate 205, which is convenient for subsequent use.

[0056] See also Figure 6 A gate plate 208 is inserted at the top of the slag discharge pipe 201, and a horizontal plate 209 is fixedly installed on the top of the gate plate 208. A vertical plate 210 is fixedly installed on the top of the shell 200, and a connecting plate 211 is fixedly installed on one side of the vertical plate 210. A motor 212 is provided at the bottom of the connecting plate 211, and a threaded rod 213 is fixedly installed on the output shaft of the motor 212. The bottom of the threaded rod 213 passes through the horizontal plate 209 and extends to the outside of the horizontal plate 209. A threaded hole for the threaded rod 213 to pass through is opened on the horizontal plate 209, and the threaded hole is threadedly connected to the threaded rod 213. The gate plate 208 is provided, which facilitates the plug-in operation of the slag discharge pipe 201 during use, thereby facilitating the subsequent opening and positioning operations, thereby improving the convenience of using the slag discharge pipe 201.

[0057] See also Figure 6 A bolt 214 is inserted into the connecting plate 211, and the bottom of the bolt 214 is threadedly connected to the top of the motor 212, and a threaded hole for the bolt 214 to pass through is opened on the connecting plate 211. A sleeve is sleeved at the bottom of the threaded rod 213, and the bottom of the sleeve is fixedly connected to the top of the slag discharge pipe 201. The sleeve can limit the bottom of the threaded rod 213 during use, thereby avoiding the threaded rod 213 from shaking during use and maintaining the stability of the threaded rod 213.

[0058] See also Figure 8A circular tube 305 is provided on one side of the scraper 303, and a return spring 306 is fixedly installed on one side of the inner wall of the circular tube 305, and a slide plate 307 is fixedly installed on one end of the return spring 306. A touch switch 308 is fixedly installed on one side of the slide plate 307, and one side of the touch switch 308 passes through the circular tube 305 and extends to the outside of the circular tube 305. A protective plate 315 is fixedly installed on one end of the touch switch 308, and one side of the protective plate 315 contacts one side of the inner wall of the shell 200. A circular hole for the touch switch 308 to pass through is opened on one side of the circular tube 305, and the inner wall of the circular hole is slidably connected to the surface of the touch switch 308. A groove is opened at the bottom of the rubber plate 304, and an extrusion spring 312 is fixedly installed on the inner bottom wall of the groove. A silicone plate 313 is fixedly installed on the top of the extrusion spring 312, and bristles 314 are fixedly installed on the top of the silicone plate 313.

[0059] See also Figure 1 and Figure 3 The cam 310 of the embodiment of the present invention is a kind of cam 311 that is fixed on the outer cover 309, and the cam 311 of the embodiment of the present invention is a kind of cam 311 that is fixed on the outer cover 309, and the cam 311 of the embodiment of the present invention is a kind of cam 311 that is fixed on the outer cover 309.

[0060] When soaking, it is necessary to soak in clean water at room temperature for 48 hours. This process will extract the ingredient indigo from the leaves of Indigofera tinctoria. Before dyeing, the dye liquid needs to be poured into a heat-resistant container and heated to boiling. After boiling, the fabric to be dyed is completely immersed in the boiling dye liquid, and the temperature is maintained at 100°C for dyeing for 10 minutes. Stir properly during the period to ensure uniform dyeing. After dyeing is completed, the fabric is taken out, cooled and rinsed with clean water to remove excess dye and impurities. The fabric is hung to dry to complete the dyeing process. When dyeing, it is necessary to use dyeing experiments of different types of fabrics. The materials are as follows: Take 30 grams of fresh Indigofera tinctoria leaves and soak them in 15 liters of water in proportion for 48 hours. Select 0.5 grams of different fabrics for the experiment.

[0061] When dyeing, it is necessary to use dyeing experiments on different types of fabrics. The materials are as follows: take 30 grams of fresh indigo leaves, soak them in 15 liters of water according to proportion for 48 hours, and select 0.5 grams of different fabrics for experiments.

[0062] Specific steps: Follow the method described in the invention content to obtain a dye solution and heat it to boiling, then put different types of fabrics into the dye solution and boil and dye for 10 minutes. The experimental results show that the following fabrics can all be dyed into a stable purple, indicating that this method is suitable for a wide range of natural and synthetic fibers.

[0063] Dyeing experiments using dye solutions with different immersion times.

[0064] Materials: Take 30 grams of fresh indigofera leaves and soak them in 15 liters of water for 24, 48, 54, and 72 hours respectively. Use 0.5 grams of silk crepe fabric for the experiment.

[0065] Steps: Following the method described in the Summary of the Invention, a dye solution was prepared and heated to a boil. Silk crepe satin fabrics were then placed in the dye solution and boiled for 10 minutes. Experimental results showed that the dye solution produced a purple color after different soaking times. The dye solution produced a bluish-purple color after 24 hours of soaking, while the dye solution produced a purple-red color after 48, 54, and 72 hours of soaking.

[0066] Staining experiments using dyes stored for different times.

[0067] Materials: Take 30 grams of fresh indigofera leaves, soak them in 15 liters of water for 48 hours, and then store them for 2 days, 7 days, 10 days, and 15 days respectively. Use 0.5 grams of silk crepe satin fabric and 0.5 grams of plain nylon fabric for the experiment.

[0068] Materials: 30 grams of fresh indigofera leaves were soaked in 15 liters of water for 48 hours and then stored for 2, 7, 10, and 15 days. 0.5 grams of silk crepe satin and 0.5 grams of plain nylon fabric were used for the experiment.

[0069] During fermentation, the soaking and fermentation treatment is carried out by controlling variables such as temperature and time. Secondly, a screw press is used to crush the raw materials and separate the residue and juice. The pH and pigment concentration of the extracted juice are tested to ensure the extraction rate. During dyeing, different dyeing effects are achieved by controlling specific dyeing parameters such as temperature, time, and stirring frequency. After dyeing is completed, post-treatment is carried out by washing, and the wastewater is managed and recycled. The method uses natural indigo leaves and does not require the addition of any chemical additives. It is easy to operate and can achieve effective dyeing in a short time. The purple color obtained by dyeing has good light resistance and wash resistance, and is suitable for various types of fiber fabrics such as silk fabrics and nylon. This method improves reduction efficiency and color fastness, while reducing water consumption and the amount of chemical additives used, and reduces overall costs through process integration or by-product development.

[0070] Working Principle: When using, the bluegrass raw material is first pre-treated by washing and soaking to remove sediment and reduce impurities. The soaking and fermentation process is carried out by controlling variables such as temperature and time. Secondly, a screw press is used to crush the raw material and separate the residue and juice. The pH and pigment concentration of the extracted juice are tested to ensure the extraction rate. During dyeing, specific dyeing parameters such as temperature, time, and stirring frequency are controlled to achieve different dyeing effects. After dyeing is completed, it is post-processed by washing, and the wastewater is managed and recycled.

[0071] First, prepare the raw materials: pick fresh indigo leaves, wash the picked leaves with clean water, and remove dust and impurities on the surface.

[0072] Then the dye solution is prepared: according to the weight ratio of fresh indigofera leaves to water of 1:500, the washed indigofera leaves are placed in a clean container and soaked in clean water at room temperature for 48 hours. This process will extract the indigo red from the indigofera leaves, and after filtering the residue leaves, a usable dyeing liquid is obtained.

[0073] After the preparation is completed, take the liquid after soaking for 48 hours for dyeing. Take the dye liquid at a ratio of 10 times the weight of the fabric, pour the dye liquid into a heat-resistant container, and heat it to boiling. After boiling, immerse the fabric to be dyed completely in the boiling dye liquid, maintain the temperature at 100℃ and dye for 10 minutes. Stir properly during the period to ensure uniform dyeing. After dyeing is completed, take out the fabric, cool it and rinse it with clean water to remove excess dye and impurities, hang the fabric to dry, and complete the dyeing process.

[0074] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology. It will not be described in detail here. The content not described in detail in this specification belongs to the existing technology known to professional and technical personnel in this field.

[0075] The present invention and its embodiments are described above. This description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A method for dyeing purple using indigo, characterized in that: The following steps are involved: S1. Raw material preparation: Pick fresh indigofera leaves, wash them with clean water, and remove surface dust and impurities; S2 dye preparation: according to the ratio of fresh blue leaves and water is 1: 500 (weight ratio), the washed blue leaves into a clean soaking fermentation device, filter the residue leaves available dye liquid; S3 dyeing process: take the liquid after soaking for dyeing, according to the ratio of 10 times the weight of the fabric to take the dye; The soaking and fermenting device comprises a base (1), a storage assembly (2) is provided on the upper surface of the base (1), a cleaning assembly (3) is provided on one side of the storage assembly (2), the storage assembly (2) comprises a shell (200) fixedly mounted on the base (1), a slag discharge pipe (201) is connected to one side of the shell (200), and a liquid discharge pipe (202) is connected to the front surface of the shell (200); The cleaning assembly (3) comprises a mesh plate (300) fixedly mounted inside a housing (200); a push rod (301) and a cleaning rod (302) are inserted into one side of the housing (200); a scraper (303) is fixedly mounted on one end of the push rod (301); and a rubber plate (304) is fixedly mounted on one end of the cleaning rod (302).

2. The method for dyeing purple using indigo according to claim 1, wherein: The top of the shell (200) is connected to a feed pipe (203), the top of the feed pipe (203) is connected to a hopper (204), a plug plate (205) is fixedly installed on the top of the liquid outlet pipe (202), a baffle (206) is fixedly installed on the top of the plug plate (205), a screw rod (207) is inserted on the baffle (206), the bottom of the screw rod (207) is rotatably connected to the top of the liquid outlet pipe (202) through a bearing, a rotating disk is fixedly installed on the top of the screw rod (207), a threaded hole for the screw rod (207) to pass through is opened on the baffle (206), and the threaded hole is threadedly connected to the screw rod (207).

3. The method for dyeing purple using indigo according to claim 1, wherein: A gate plate (208) is inserted at the top of the slag discharge pipe (201), a horizontal plate (209) is fixedly installed at the top of the gate plate (208), a vertical plate (210) is fixedly installed at the top of the shell (200), a connecting plate (211) is fixedly installed on one side of the vertical plate (210), a motor (212) is provided at the bottom of the connecting plate (211), a threaded rod (213) is fixedly installed on the output shaft of the motor (212), the bottom of the threaded rod (213) passes through the horizontal plate (209) and extends to the outside of the horizontal plate (209), a threaded hole for the threaded rod (213) to pass through is opened on the horizontal plate (209), and the threaded hole is threadedly connected to the threaded rod (213).

4. The method for dyeing purple using indigo according to claim 3, wherein: A bolt (214) is inserted into the connecting plate (211), the bottom of the bolt (214) is threadedly connected to the top of the motor (212), and a threaded hole for the bolt (214) to pass through is opened on the connecting plate (211), and a sleeve is sleeved on the bottom of the threaded rod (213), and the bottom of the sleeve is fixedly connected to the top of the slag discharge pipe (201).

5. The method for dyeing purple using indigo according to claim 1, characterized in that: A circular tube (305) is provided on one side of the scraper (303), a return spring (306) is fixedly installed on one side of the inner wall of the circular tube (305), a slide plate (307) is fixedly installed on one end of the return spring (306), a touch switch (308) is fixedly installed on one side of the slide plate (307), one side of the touch switch (308) passes through the circular tube (305) and extends to the outside of the circular tube (305), a protective plate (315) is fixedly installed on one end of the touch switch (308), and the protective plate One side of (315) contacts one side of the inner wall of the shell (200), a circular hole for the touch switch (308) to pass through is opened on one side of the circular tube (305), the inner wall of the circular hole is slidably connected to the surface of the touch switch (308), a groove is opened at the bottom of the rubber plate (304), an extrusion spring (312) is fixedly installed on the inner bottom wall of the groove, a silicone plate (313) is fixedly installed on the top of the extrusion spring (312), and a brush bristle (314) is fixedly installed on the top of the silicone plate (313).

6. The method for dyeing purple using indigo according to claim 1, characterized in that: A cover body (309) is fixedly installed on one side of the housing (200), and one end of the push rod (301) and the cleaning rod (302) are fixedly connected through an oblong plate (310). A threaded column (311) is inserted on one side of the cover body (309). One end of the threaded column (311) located inside the cover body (309) passes through the oblong plate (310) and extends to the outside of the oblong plate (310). A threaded hole for the threaded column (311) to pass through is provided on the oblong plate (310). The threaded hole is threadedly connected to the threaded column (311). One end of the threaded column (311) is rotatably connected to one side of the housing (200) through a bearing. A circular hole for the threaded column (311) to pass through is provided on one side of the cover body (309).

7. The method for dyeing purple using indigo according to claim 1, characterized in that: During the soaking, the leaves need to be soaked in clean water at room temperature for 48 hours. During this process, the component indirubin is leached from the indigofera leaves.

8. The method for dyeing purple using indigo according to claim 1, characterized in that: Before dyeing, the dye liquor needs to be poured into a heat-resistant container and heated to boiling. After boiling, the fabric to be dyed is completely immersed in the boiling dye liquor and dyed at a temperature of 100° C. for 10 minutes. During the dyeing process, the fabric is properly stirred to ensure uniform dyeing. After dyeing is completed, the fabric is taken out, cooled and rinsed with clean water to remove excess dye liquor and impurities, and the fabric is hung to dry to complete the dyeing process.

9. The method for dyeing purple using indigo according to claim 1, characterized in that: During the dyeing process, dyeing experiments of different types of fabrics are required. The materials are as follows: 30 grams of fresh indigofera leaves are soaked in 15 liters of water for 48 hours according to the proportion, and 0.5 grams of different fabrics are selected for the experiment. Specific steps: According to the method described in the invention summary, obtain a dye solution and heat it to boiling, then put different types of fabrics into the dye solution and boil and dye for 10 minutes. The experimental results show that the following fabrics can all be dyed into a stable purple color, indicating that this method is suitable for a wide range of applications for natural and synthetic fibers; Dyeing experiments using dye solutions with different soaking times Materials: Take 30 grams of fresh indigofera leaves and soak them in 15 liters of water for 24, 48, 54, and 72 hours respectively. Use 0.5 grams of silk crepe fabric for the experiment. Steps: Following the method described in the Summary of the Invention, obtain a dye solution and heat it to a boil. Then, place the silk crepe satin fabric in the dye solution and boil for 10 minutes. Experimental results show that the dye solution produced a purple color after different soaking times. The dye solution produced a bluish-purple color after 24 hours of soaking, while the dye solution produced a purple-red color after 48, 54, and 72 hours of soaking. Dyeing experiments using dye solutions with different storage times Materials: 30 grams of fresh indigofera leaves were soaked in 15 liters of water for 48 hours and then stored for 2, 7, 10, and 15 days. 0.5 grams of silk crepe satin and 0.5 grams of plain nylon fabric were used for the experiment. Steps: Follow the method described in the Summary of the Invention to obtain a dye solution, heat it to a boil, and then place the test fabrics in the dye solution and boil for 10 minutes. Experimental results show that the dye solution can produce a purple color regardless of storage time, with the longest storage time known being 15 days.

10. The method for dyeing purple using indigo according to claim 1, characterized in that: During the fermentation, the temperature, time and other variables are controlled to carry out soaking and fermentation treatment, and then a screw press is used to crush the raw materials and separate the residue and juice. The pH and pigment concentration of the extracted juice are tested to ensure the extraction rate. During dyeing, specific dyeing parameters (temperature, time, stirring frequency, etc.) are controlled to achieve different dyeing effects. After the dyeing is completed, post-treatment is carried out by cleaning, and the wastewater is managed and recycled.

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