A waterless dyeing device and a waterless dyeing method

Abstract

The present invention discloses a waterless dyeing device and a waterless dyeing method, characterized in that the sewage dyeing device comprises: a cloth spreading frame, a support frame provided on the right side of the cloth spreading frame, a plurality of drying cylinders provided on the support frame, two infrared heating boxes provided on the right side of the support frame, a medium tank and a dye tank provided below the two infrared heating boxes, a cloth discharging frame provided on the right side of the infrared heating boxes, a distribution roller provided on the cloth spreading frame, an inlet roller and an outlet roller provided below the infrared heating boxes, a driving roller provided above the infrared heating boxes, and a medium tank and a dye tank provided below the corresponding inlet rollers.

Description

Technical Field

[0001] The present invention relates to the technical field of printing and dyeing, and in particular to a waterless dyeing device and a waterless dyeing method. Background Art

[0002] Current dyeing methods consume a lot of water, electricity, steam, and labor. Large amounts of wastewater and sludge are discharged, which is environmentally unfriendly, has a significant impact on the climate, and poses significant health risks to workers during the production process. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a waterless dyeing device and a waterless dyeing method.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A waterless dyeing device includes a cloth spreading frame, a support frame is provided on the right side of the cloth spreading frame, a plurality of drying cylinders are provided on the support frame, two infrared heating boxes are provided on the right side of the support frame, a medium trough and a dye trough are provided below the two infrared heating boxes respectively, a cloth discharging frame is provided on the right side of the infrared heating boxes, a distribution roller is provided on the cloth spreading frame, an inlet roller and an outlet roller are provided below the infrared heating boxes, a driving roller is provided above the infrared heating boxes, the medium trough and the dye trough are provided below the corresponding inlet rollers, and a collecting cylinder is provided below the outlet roller.

[0006] Preferably, the medium tank includes a solution box, in which a three-roller pressing mechanism and a two-roller pressing mechanism are arranged. The two-roller pressing mechanism is located above the three-roller pressing mechanism. The three rollers in the three-roller pressing mechanism are arranged vertically, and the two rollers in the two-roller pressing mechanism are arranged horizontally. The structure of the dyeing tank is the same as that of the medium tank.

[0007] Preferably, a speed regulator is provided on the support frame, and the speed regulator is driven and connected to a tension roller.

[0008] Preferably, the drying cylinder includes a cylinder body and a central axis passing through the cylinder body, the cylinder body is connected with an end plate composed of several mounting plates, the outer side of the end plate is connected with a mounting sleeve, a bearing is arranged between the mounting sleeve and the central axis, water ring 1, water ring 2 and water ring 3 are arranged on the outer side of the central axis, several heating pipes and preheating pipes are installed on the central axis through support blocks, the preheating pipe is located below the heating pipe, a water inlet pipe and a water outlet pipe are arranged in the central axis, the water inlet pipe is connected with water ring 1, the water outlet pipe is connected with water ring 2, water pipe 1 is connected between water ring 1 and the heating pipe, water pipe 2 is connected between water ring 3 and the heating pipe, a one-way valve is arranged on water pipe 2, water pipe 3 is connected between water ring 3 and the preheating pipe, and water pipe 4 is connected between water ring 2 and the preheating pipe.

[0009] Preferably, a waist-shaped hole is provided on the mounting plate, a guide column is provided in the waist-shaped hole, a rotating shaft is passed through the guide column, a spring is connected between the rotating shaft and the waist-shaped hole, a thermal conductive cotton is connected to the inner end of the rotating shaft, a thermal conductive film is connected between the thermal conductive cotton and the cylinder body, the outer end of the rotating shaft extends out of the mounting plate and is provided with a roller for rotation, and a guide rail is provided on the inner side of the drying cylinder.

[0010] Preferably, the part of the central shaft located in the mounting sleeve is connected to the limiting ring 1, and the position on the inner side of the mounting sleeve corresponding to the limiting ring 1 is connected to the limiting ring 2. The bearing includes a bearing inner ring and a bearing outer ring. The inner side of the bearing inner ring abuts against the limiting ring 1, and the inner side of the bearing outer ring abuts against the limiting ring 2. A cover plate is fixedly installed on the outer side of the mounting sleeve by threads, and the inner side of the cover plate is connected to the limiting ring 3. The inner end of the limiting ring 3 abuts against the outer end of the bearing outer ring. The outer periphery of the central shaft is fixed with a limiting sleeve by bolts, and the inner end of the limiting sleeve abuts against the outer end of the bearing inner ring.

[0011] Preferably, a mounting groove is provided on the inner side of the mounting plate, a sealing lip is installed in the mounting groove, a sealing ring is connected to the position corresponding to the sealing lip on the outer side of the central axis, and sealing sheet 1 and sealing sheet 2 are provided on the sealing lip. Sealing sheet 1 is arranged to fit the inner side surface of the sealing ring, and sealing sheet 2 is arranged to fit the outer periphery of the sealing ring. A skeleton is provided inside the sealing lip.

[0012] A waterless dyeing method comprises the following steps:

[0013] Step 1: The fabric passes through the spreading rack and the distribution roller opens the fabric;

[0014] Step 2: The fabric passes through the drying drum on the support frame for drying, flattening and ironing;

[0015] Step 3: The fabric enters the medium tank with mordant added, and the mordant is pressed on the fabric by a three-roll pressing mechanism at room temperature and pressure. The fabric is then pressed by the three-roll pressing mechanism to remove excess mordant, and the fabric enters the infrared heating box for drying;

[0016] Step 4: The fabric enters the dyeing tank with dye added, and is dyed by a three-roller pressing mechanism under normal temperature and pressure. The three-roller pressing mechanism then presses the fabric to control the amount of dye on the fabric and thus the amount of coloring. The fabric enters the infrared heating box for drying.

[0017] Step 5: Steam dry the fabric and roll it up;

[0018] Step 6: The fabric enters the soft tank and is directly shaped and then rolled;

[0019] Step 7: Storage.

[0020] Preferably, in step 3 and step 4, the temperature in the infrared heating box is controlled at 60-260 degrees Celsius.

[0021] Compared with the prior art, the present invention has the following advantages: the fabric is directly dyed by adding a mordant to a dye, thereby reducing the generation of printing and dyeing wastewater, saving electricity, steam and labor; and the flat-width dyeing is adopted to avoid rope-like dyeing defects such as creases, stripes, pilling and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 Schematic diagram of the structure of the drying drum in the present invention;

[0024] Figure 3 for Figure 2 A magnified schematic diagram of point A in the middle;

[0025] Figure 4 for Figure 3 A magnified schematic diagram of point A in the middle;

[0026] Figure 5 for Figure 2 A magnified schematic diagram of point B in the middle;

[0027] Figure 6 It is a side view of the drying drum in the present invention.

[0028] Reference numerals: 1, cloth spreading frame; 2, distribution roller; 3, support frame; 4, drying drum; 5, tension roller; 6, speed regulator; 7, infrared heating box; 8, driving roller; 9, introduction roller; 10, outlet roller; 11, medium tank; 12, three-roller pressing mechanism; 13, two-roller pressing mechanism; 14, collecting drum; 15, guide roller; 16, solution tank; 17, dyeing tank; 18, cloth discharging frame; 19, center axis; 20, water inlet pipe; 21, water outlet pipe; 22, water ring 1; 23, water ring 2; 24, water ring 3; 25, heating pipe; 26, preheating pipe; 27, support block; 28, water pipe 1; 29, water pipe 2; 30 , one-way valve; 31. Water pipe three; 32. Water pipe four; 33. Installation sleeve; 34. Installation plate; 35. Cylinder body; 36. Fixed sleeve; 37. Limit ring one; 38. Limit ring two; 39. Bearing inner ring; 40. Bearing outer ring; 41. Limit ring three; 42. Cover plate; 43. Sealing ring one; 44. Limit sleeve; 45. Sealing ring two; 46. Installation groove; 47. Sealing lip; 48. Sealing disc one; 49. Sealing disc two; 50. Skeleton; 51. Waist hole; 52. Guide column; 53. Spring; 54. Thermal cotton; 55. Thermal film; 56. Rotating shaft; 57. Roller; 58. Guide rail; 59. Sealing ring. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1 -Attached Figure 6 The embodiments of the present invention are described in detail.

[0030] A waterless dyeing device includes a cloth spreading frame 1, a support frame 3 is provided on the right side of the cloth spreading frame 1, a number of drying cylinders 4 are provided on the support frame 3, two infrared heating boxes 7 are provided on the right side of the support frame 3, a medium trough 11 and a dyeing trough 17 are respectively provided below the two infrared heating boxes 7, a cloth discharging frame 18 is provided on the right side of the infrared heating box 7, a distribution roller 2 is provided on the cloth spreading frame 1, an introduction roller 9 and an outlet roller 10 are provided below the infrared heating box 7, a driving roller 8 is provided above the infrared heating box 7, the medium trough 11 and the dyeing trough 17 are provided below the corresponding introduction roller 9, a collecting cylinder 14 is provided below the outlet roller 10, the collecting cylinder 14 is used to collect the solution dripping from the fabric, a guide roller 15 is provided between the two infrared heating boxes 7, the guide roller 15 guides the fabric from the previous infrared heating box 7 to the next infrared heating box 7, and also includes a cloth guide roller provided on each mechanism to guide the fabric from the previous mechanism to the next mechanism.

[0031] The fabric enters the fabric spreading frame 1 and is guided by the distribution rollers 2. The non-slip separator rollers and edge suction device on the fabric spreading frame 1 drive the fabric forward while the fabric is opened. The fabric passes through the drying drum 4 on the support frame 3 for drying, smoothing, and ironing. The fabric enters the mordant tank 11 for mordant treatment and then enters the infrared heating box 7 above for drying. The fabric then enters the dye tank 17 for dyeing and then enters the upper dye tank 17 for drying. The dried fabric is then discharged from the fabric outlet rack 18.

[0032] Preferably, the medium tank 11 includes a solution tank 16, which is provided with a three-roller pressing mechanism 12 and a two-roller pressing mechanism 13. The two-roller pressing mechanism 13 is located above the three-roller pressing mechanism 12. The three rollers of the three-roller pressing mechanism 12 are arranged vertically from top to bottom, while the two rollers of the two-roller pressing mechanism 13 are arranged horizontally. The structure of the dyeing tank 17 is similar to that of the medium tank 11. From bottom to top, the fabric passes around the three rollers of the three-roller pressing mechanism 12 in sequence, and then passes between the two rollers of the two-roller pressing mechanism 13.

[0033] Preferably, a speed regulator 6 is provided on the support frame 3, and the speed regulator 6 is driven and connected to the tension roller 5. The fabric is arranged to pass around the tension roller 5, and the speed regulator 6 is used to control the rotation speed of the tension roller 5, thereby controlling the forward speed of the fabric, so that the fabric remains in a tensioned state.

[0034] Preferably, the existing drying drum 4 adopts an overall heating method, and the temperature of the entire surface of the drying drum 4 is the same. When the fabric passes through the drying drum 4, it will drive the drying drum 4 to rotate and will only contact a part of the drying drum 4, which will cause waste in heating the uncontacted part of the drying drum 4. The drying cylinder 4 includes a cylinder body 35 and a central shaft 19 passing through the cylinder body 35. The cylinder body 35 is connected to an end plate composed of several mounting plates 34. The outer side of the end plate is connected to a mounting sleeve 33. The end plate and the mounting sleeve 33 are connected by a fixing sleeve 36. One end of the fixing sleeve 36 is fixedly connected to the mounting plate 34 by a bolt, and the other end of the fixing sleeve 36 is fixedly connected to the mounting sleeve 33 by a bolt. A bearing is provided between the mounting sleeve 33 and the central shaft 19. Water ring 1 22, water ring 23 and water ring 3 24 are provided on the outer side of the central shaft 19. Several heating tubes 25 and preheating tubes 26 are installed on the central shaft 19 through a support block 27. The preheating tube 26 is located below the heating tube 25. There is a certain distance between the heating tubes 25, between the preheating tubes 26, and between the heating tubes 25 and the preheating tubes 26 to prevent heat from being transferred between the heating tubes 25 and the preheating tubes 26. The heating pipe 25 is installed at the part of the drying drum 4 that is in direct contact with the fabric, thereby heating the drying drum 4 at that location. The preheating pipe 26 is installed at the part of the drying drum 4 that is about to come into direct contact with the fabric, thereby preheating the drying drum 4 at that location, facilitating subsequent heating by the heating pipe 25 to the specified temperature.

[0035] A water inlet pipe 20 and a water outlet pipe 21 are provided in the central axis 19, and the water inlet pipe 20 and the water outlet pipe 21 are connected to the hot water circulation system. The water inlet pipe 20 is connected to the water ring 1 22, and the water outlet pipe 21 is connected to the water ring 2 23. A water pipe 1 28 is connected between the water ring 1 22 and the heating pipe 25, and a water pipe 29 is connected between the water ring 3 24 and the heating pipe 25. A one-way valve 30 is provided on the water pipe 29. The setting of the one-way valve 30 makes the water in the heating pipe 25 can only enter the water ring 3 24 through the water pipe 2 29, and cannot flow in the opposite direction. A water pipe 31 is connected between the water ring 3 24 and the preheating pipe 26, and a water pipe 4 32 is connected between the water ring 23 and the preheating pipe 26.

[0036] Hot water flowing in through water inlet pipe 20 enters water ring 1 22, which then flows through water pipe 1 28 into each heating tube 25. Heating tubes 25 are located inside the portion of the drying drum 4 that contacts the fabric, allowing them to heat the outer portion of the drum 35, which is the portion in contact with the fabric. The water in heating tubes 25 flows through water pipe 2 29 into water ring 3 24, then through water pipe 3 31 into preheating tube 26, at which point the water temperature drops slightly. After the water enters the preheating tube 26, the preheating tube 26 heats the barrel 35 located on the outside thereof. The barrel 35 here is the part that is about to come into contact with the fabric. The heating of the barrel 35 here has a preheating effect, which can make the barrel 35 here rise to a certain temperature first, so that it can reach the specified temperature during subsequent contact, thereby avoiding the situation where the heating tube 25 directly heats the barrel 35 with a lower temperature and fails to reach the specified temperature, and avoids the situation where the temperature of the barrel 35 is insufficient and affects the drying and ironing effects.

[0037] Preferably, the mounting plate 34 is provided with a circular hole 51, within which a guide post 52 is disposed. A rotating shaft 56 is passed through the guide post 52. A spring 53 is connected between the rotating shaft 56 and the circular hole 51. A heat-conducting pad 54 is connected to the inner end of the rotating shaft 56. A heat-conducting film 55 is connected between the heat-conducting pad 54 and the drum body 35. The outer end of the rotating shaft 56 extends out of the mounting plate 34 and is provided with a roller 57 for rotation. A guide rail 58 is provided inside the drying drum 4. The guide rail 58 is located on the side of the drying drum 4 facing the fabric. As the drying drum 4 rotates, when the mounting plate 34 approaches the fabric, the roller 57 is squeezed inward by the guide rail 58, causing the rotating shaft 56 to drive the heat-conducting pad 54 inward. The heat-conducting pad 54 can contact the preheating tube 26 or the heating tube 25. The heat from the heating tube 25 or the preheating tube 26 is transferred to the drum body 35 through the heat-conducting pad 54 and the heat-conducting film 55, thereby achieving better heat transfer. When the mounting plate rotates away from the fabric, the roller 57 disengages from the guide rail 58, and the rotating shaft 56 moves outward under the action of the spring 53, thereby moving the thermal cotton 54 toward the barrel 35, causing the thermal film 55 to fold.

[0038] Sealing blocks are overlapped and arranged outside the waist-round hole 51 to prevent the heat in the drying cylinder 4 from escaping from the waist-round hole 51 .

[0039] Preferably, the part of the central shaft 19 located inside the mounting sleeve 33 is connected to the limiting ring 1 37, and the position on the inner side of the mounting sleeve 33 corresponding to the limiting ring 1 37 is connected to the limiting ring 2 38. The bearing includes a bearing inner ring 39 and a bearing outer ring 40. The inner side of the bearing inner ring 39 abuts against the limiting ring 1 37, and the inner side of the bearing outer ring 40 abuts against the limiting ring 2 38. A cover plate 42 is fixedly installed on the outer side of the mounting sleeve 33 by threads, and the inner side of the cover plate 42 is connected to the limiting ring 31. The inner end of the limiting ring 31 abuts against the outer end of the bearing outer ring 40. A limiting sleeve 44 is fixedly installed on the outer periphery of the central shaft 19 by bolts, and the inner end of the limiting sleeve 44 abuts against the outer end of the bearing inner ring 39.

[0040] The inner ring 39 of the bearing is clamped and fixed by the action of the limiting sleeve 44 and the limiting ring 1 37 , and the outer ring 40 of the bearing is clamped and fixed by the action of the limiting ring 2 38 and the limiting ring 3 41 , so that the bearing is installed between the mounting sleeve 33 and the center shaft 19 .

[0041] A seal ring 1 43 is connected to the inner side of the stop ring 41, and a seal ring 2 45 is connected to the outer side of the stop sleeve 44. The seal rings 1 43 and 2 45 fit snugly together and prevent contamination when the mounting sleeve 33 rotates. The arrangement of the seal rings 2 45 and 1 43 prevents the ingress of foreign matter, thereby protecting the bearing.

[0042] Preferably, a mounting groove 46 is defined on the inside of the mounting plate 34, within which a sealing lip 47 is mounted. A sealing ring 59 is connected to the outside of the central axis 19 at a position corresponding to the sealing lip 47. Sealing lip 47 is provided with a first sealing piece 48 and a second sealing piece 49. Sealing piece 1 48 is positioned against the inner side of sealing ring 59, while sealing piece 2 49 is positioned against the outer periphery of sealing ring 59. A frame 50 is positioned within the sealing lip 47. The portion of frame 50 located within the mounting groove 46 is rolled, allowing the portion of sealing lip 47 located within the mounting groove 46 to be securely retained therein. The frame 50 also extends into sealing pieces 1 48 and 2 49, providing support within these two pieces, ensuring sufficient strength for better contact with the sealing ring 59, thereby achieving a good sealing effect and preventing heat from escaping through the gap.

[0043] A waterless dyeing method comprises the following steps:

[0044] Step 1: Select fabrics with a weight of 50-500 grams and a width of 50-500 cm. The fabrics pass through the fabric spreading rack 1 and the distribution roller 2 to open the fabric. The fabric spreading rack 1 is also provided with an anti-slip wire separation roller and an edge suction device to assist in opening the fabric.

[0045] Step 2: The fabric passes through the drying drum 4 on the support frame 3. There are two to ten drying drums 4 for drying, flattening and ironing. After the fabric is flattened, it is ensured that there is no trace of dyeing to ensure product quality.

[0046] Step 3: The fabric enters the medium tank 11 to which the mordant is added, and the mordant is pressed onto the fabric by the three-roll pressing mechanism 12 at room temperature and pressure. The fabric is then pressed by the three-roll pressing mechanism 12 to remove excess mordant to control the mordant uptake rate. The uptake rate is controlled at 10-120 m / min, and the fabric enters the infrared heating box 7 for drying. The temperature in the infrared heating box 7 is controlled at 60-260 degrees Celsius.

[0047] Step 4: The fabric enters a dyeing tank 17 containing dye. The dye is made from natural pigments derived from traditional Chinese medicine and is free of formaldehyde, heavy metals, and carcinogens such as 24 aromatic amines. The fabric is then dyed by a three-roller pressing mechanism 12 at room temperature and pressure. The three-roller pressing mechanism 12 controls the amount of dye applied to the fabric, thereby controlling the color depth. The fabric then enters an infrared heating chamber 7 for drying. The temperature within the infrared heating chamber 7 is controlled between 60 and 260 degrees Celsius.

[0048] After the mordant treatment, the fabric absorbs the required medium, allowing the dye to absorb and penetrate the treated fabric. After the fabric is dyed, it is dried to strengthen the bond between the fiber, the mordant, and the natural dye, meeting the physical and chemical requirements and achieving color fastness standards.

[0049] Flat-width dyeing avoids defects of rope dyeing such as creases, stripes, pilling, and solves the serious problem of overflow rope dyeing of knitted fabrics.

[0050] Taking the dyeing of 1 ton of cotton cloth with reactive dyes as an example, about 100 tons of wastewater will be generated. The daily processing of 20 tons of dyed fabrics will generate 2,000 tons of wastewater. The secondary pollutants such as ferrous sulfate and lime produced in the wastewater treatment are calculated at 0.5%, which consumes 10 tons per day. At present, the factory charges for sewage discharge on an in-and-out basis. Based on the average urban price of 10 yuan per ton, the use of waterless dyeing method can save 20,000 yuan in water charges per day.

[0051] Reactive dyeing of 1 ton of cotton cloth consumes about 5 tons of steam, while natural dyeing of cotton consumes about 3.5 tons, saving 1.5 tons of energy. At 350 yuan per ton, this saves 10,500 yuan per day, saving one-third of electricity compared with the same period last year. This reduces carbon emissions, reduces pollution sources, and solves the root causes of environmental pollution.

[0052] Step 5: Steam dry the fabric and roll it up.

[0053] Step 6: The fabric enters the soft tank and is directly shaped and then rolled.

[0054] Step 7: Storage.

[0055] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A waterless dyeing device, characterized in that: The invention comprises a cloth spreading frame (1), a support frame (3) is provided on the right side of the cloth spreading frame (1), a plurality of drying cylinders (4) are provided on the support frame (3), two infrared heating boxes (7) are provided on the right side of the support frame (3), a medium slot (11) and a dyeing slot (17) are provided below the two infrared heating boxes (7), a cloth discharging frame (18) is provided on the right side of the infrared heating box (7), a distribution roller (2) is provided on the cloth spreading frame (1), an introduction roller (9) and an outlet roller (10) are provided below the infrared heating box (7), a driving roller (8) is provided above the infrared heating box (7), and the medium slot (11) and the dyeing slot (17) are provided on the corresponding A collecting cylinder (14) is provided below the inlet roller (9) and the outlet roller (10); the drying cylinder (4) comprises a cylinder body (35) and a central shaft (19) passing through the cylinder body (35); an end plate formed by splicing a plurality of mounting plates (34) is connected to the cylinder body (35); a mounting sleeve (33) is connected to the outer side of the end plate; a bearing is provided between the mounting sleeve (33) and the central shaft (19); a water ring 1 (22), a water ring 2 (23) and a water ring 3 (24) are provided on the outer side of the central shaft (19); and a plurality of heating pipes (25) and a preheating pipe (26) are installed on the central shaft (19) through a support block (27). The preheating pipe (26) is located below the heating pipe (25). A water inlet pipe (20) and a water outlet pipe (21) are provided in the central axis (19). The water inlet pipe (20) is connected to the water ring 1 (22). The water outlet pipe (21) is connected to the water ring 2 (23). A water pipe 1 (28) is connected between the water ring 1 (22) and the heating pipe (25). A water pipe 2 (29) is connected between the water ring 3 (24) and the heating pipe (25). A one-way valve (30) is provided on the water pipe 2 (29). A water pipe 3 (31) is connected between the water ring 3 (24) and the preheating pipe (26). The water ring 2 (23 ) and the preheating tube (26) are connected with a water pipe four (32); a waist-shaped hole (51) is opened on the mounting plate (34), a guide column (52) is arranged in the waist-shaped hole (51), a rotating shaft (56) is passed through the guide column (52), a spring (53) is connected between the rotating shaft (56) and the waist-shaped hole (51), a heat-conducting cotton (54) is connected to the inner end of the rotating shaft (56), a heat-conducting film (55) is connected between the heat-conducting cotton (54) and the cylinder body (35), the outer end of the rotating shaft (56) extends out of the mounting plate (34) and is rotatably provided with a roller (57), and a guide rail (58) is provided at the inner side of the drying cylinder (4).

2. The waterless dyeing equipment according to claim 1, characterized in that: The medium tank (11) includes a solution box (16), wherein a three-roller pressing mechanism (12) and a two-roller pressing mechanism (13) are arranged in the solution box (16), wherein the two-roller pressing mechanism (13) is located above the three-roller pressing mechanism (12), wherein the three rollers in the three-roller pressing mechanism (12) are arranged vertically, and the two rollers in the two-roller pressing mechanism (13) are arranged horizontally. The structure of the dyeing tank (17) is the same as that of the medium tank (11).

3. The waterless dyeing equipment according to claim 1, characterized in that: A speed regulator (6) is provided on the support frame (3), and the speed regulator (6) is driven and connected to a tension roller (5).

4. The waterless dyeing equipment according to claim 1, characterized in that: The portion of the central shaft (19) located in the mounting sleeve (33) is connected to the limiting ring 1 (37), and the position of the inner side of the mounting sleeve (33) corresponding to the limiting ring 1 (37) is connected to the limiting ring 2 (38). The bearing comprises a bearing inner ring (39) and a bearing outer ring (40). The inner side of the bearing inner ring (39) abuts against the limiting ring 1 (37), and the inner side of the bearing outer ring (40) abuts against the limiting ring 2 (38). A cover plate (42) is fixedly installed on the outer side of the mounting sleeve (33) by means of threads. The inner side of the cover plate (42) is connected to the limiting ring 3 (41), and the inner end of the limiting ring 3 (41) abuts against the outer end of the bearing outer ring (40). The outer periphery of the central shaft (19) is fixedly installed with a limiting sleeve (44) by means of bolts, and the inner end of the limiting sleeve (44) abuts against the outer end of the bearing inner ring (39).

5. The waterless dyeing equipment according to claim 4, characterized in that: A mounting groove (46) is provided on the inner side of the mounting plate (34), a sealing lip (47) is installed in the mounting groove (46), a sealing ring (59) is connected to a position corresponding to the sealing lip (47) on the outer side of the central axis (19), a sealing sheet 1 (48) and a sealing sheet 2 (49) are provided on the sealing lip (47), the sealing sheet 1 (48) is arranged to fit the inner side surface of the sealing ring (59), and the sealing sheet 2 (49) is arranged to fit the outer periphery of the sealing ring (59), and a frame (50) is provided in the sealing lip (47).

6. A waterless dyeing method using the waterless dyeing equipment according to claim 1, characterized in that: The following steps are involved: Step 1: The fabric passes through a spreading frame (1) and a distribution roller (2) to open the fabric; Step 2: The fabric passes through the drying drum (4) on the support frame (3) for drying, flattening and ironing; Step 3: The fabric enters a medium tank (11) with a mordant added thereto, and the mordant is pressed onto the fabric by a three-roll pressing mechanism (12) at room temperature and pressure. The fabric is then pressed by the three-roll pressing mechanism (12) to remove excess mordant, and the fabric enters an infrared heating box (7) for drying. Step 4: The fabric enters a dyeing tank (17) with dye added thereto, and is dyed by a three-roller pressing mechanism (12) at room temperature and pressure. The three-roller pressing mechanism (12) then presses the fabric to control the amount of dye on the fabric and thus the amount of color applied. The fabric enters an infrared heating box (7) for drying. Step 5: Steam dry the fabric and roll it up; Step 6: The fabric enters the soft tank and is directly shaped and then rolled; Step 7: Storage.

7. A waterless dyeing method according to claim 6, characterized in that: In step 3 and step 4, the temperature in the infrared heating box (7) is controlled at 60-260 degrees Celsius.

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