Dyeing device for low-temperature enzyme-oxygen refining of knitted fabric

Abstract

The invention relates to the technical field of textile dyeing, in particular to a dyeing device for low-temperature enzyme-oxygen refining of knitted fabric, comprising a dyeing tank, a dye liquor adding structure and a circulating filtering structure, the dye liquor adding structure is arranged on one side of the dyeing tank and communicated with the dyeing tank, and the circulating filtering structure is arranged on the other side of the dyeing tank; the circulating filtering structure is connected between the dyeing pool and the dye liquor adding structure in series, a spraying assembly and a cloth guide roller are arranged on the dyeing pool, the spraying assembly is arranged on the upper portion of the interior of the dyeing pool and communicated with the dye liquor adding structure, the spraying assembly is used for spraying dye liquor to knitted fabric in the dyeing pool, and the cloth guide roller is communicated with the dye liquor adding structure. The cloth guide roller is arranged in the dyeing pool and located below the spraying assembly, and the cloth guide roller is used for guiding knitted cloth to be conveyed in the dyeing pool. The method has the following effects that the contact uniformity of the dye liquor and the knitted fabric is improved, and finally the appearance quality of the knitted fabric is improved.

Description

Technical Field

[0001] This application relates to the technical field of textile dyeing, and in particular to a dyeing apparatus for low-temperature enzymatic oxygen refining of knitted fabrics. Background Technology

[0002] As people's requirements for textile quality and environmental protection continue to increase, knitted fabric dyeing technology is also developing. Low-temperature enzyme oxygen refining dyeing technology, as an emerging dyeing method, can be dyed at lower temperatures, effectively reducing energy consumption and damage to knitted fabric fibers, while also improving dyeing uniformity and color brightness, and is gradually gaining attention and favor in the industry.

[0003] In the dyeing process of knitted fabrics, the knitted fabric is usually dyed by immersing it in dye solution. The dye solution is injected into a dyeing container, and the knitted fabric is mainly guided by rollers within the dyeing container. However, the immersion dyeing method results in uneven contact between the dye solution and the knitted fabric, which can easily lead to uneven dyeing and ultimately affect the appearance quality of the knitted fabric. Summary of the Invention

[0004] In order to improve the uniformity of contact between the dye liquor and the knitted fabric, and ultimately improve the appearance quality of the knitted fabric, this application provides a dyeing apparatus for low-temperature enzymatic oxygen refining of knitted fabric.

[0005] This application provides a dyeing apparatus for low-temperature enzymatic oxygen refining of knitted fabrics, employing the following technical solution: It includes a dyeing tank, a dye liquor addition structure, and a circulating filtration structure. The dye liquor addition structure is located on one side of the dyeing tank and connected to it. The circulating filtration structure is connected in series between the dyeing tank and the dye liquor addition structure. A spray assembly and a guide roller are provided on the dyeing tank. The spray assembly is located inside and above the dyeing tank and connected to the dye liquor addition structure. The spray assembly is used to spray dye liquor onto the knitted fabric in the dyeing tank. The guide roller is located inside the dyeing tank and below the spray assembly, and is used to guide the knitted fabric within the dyeing tank.

[0006] By adopting the above technical solution, a spray component connected to the dye liquor addition structure is added and located inside and above the dyeing tank, forming a dual dye liquor contact mode of soaking and spraying. The spray component can directly spray the dye liquor onto the knitted fabric in the dyeing tank, which makes up for the defect that the dye liquor is difficult to penetrate into the gaps between the knitted fabric fibers quickly and evenly when simply soaking. By actively spraying, the dye liquor can cover the fabric surface more comprehensively, improving the uniformity of contact between the dye liquor and the knitted fabric, and ultimately improving the appearance quality of the knitted fabric.

[0007] Preferably, the spray assembly includes a spray pipe and spray heads. The spray pipe is arranged in a direction perpendicular to the knitted fabric conveying direction, and the spray heads are evenly distributed on the spray pipe along the length direction of the spray pipe. Both ends of the spray pipe are movably connected to the inner wall of the dyeing tank through swing connectors, and the spray pipe can reciprocate around the swing connectors.

[0008] By adopting the above technical solution, the spray pipe is set perpendicular to the conveying direction of the knitted fabric, and with the evenly distributed spray heads, the full coverage of the fabric surface can be achieved. The reciprocating swing function of the spray pipe through the swing connector further expands the spray range, allowing all areas of the knitted fabric to be evenly contacted by the low-temperature enzyme oxygen dyeing solution, effectively improving the consistency of scouring.

[0009] Preferably, multiple guide rollers are provided, and the multiple guide rollers are staggered up and down along the knitted fabric conveying direction. The two ends of the guide rollers are connected to the inner sidewall of the dyeing tank through lifting connectors, and the lifting connectors drive the guide rollers to move up and down in the vertical direction.

[0010] By adopting the above technical solution, multiple guide rollers are arranged in an alternating manner, which extends the residence path and time of the knitted fabric in the dyeing pool, allowing the knitted fabric and dye liquor to react fully and improve the refining effect. The vertical movement function of the guide rollers through the lifting connector can flexibly adjust the height and spacing of the fabric path to adapt to knitted fabrics of different thicknesses and elasticities, avoid the stretching and deformation caused by the fixed fabric path during the conveying process, and at the same time facilitate the optimization of the dye liquor contact angle according to process requirements.

[0011] Preferably, the swing connector of the spray pipe includes a swing rod and a swing drive. The swing rod is symmetrically arranged at both ends of the spray pipe. One end of the swing rod is coaxially connected to the spray pipe, and the other end of the swing rod is rotatably mounted on the inner wall of the dyeing tank. The swing drive is located on the outside of the dyeing tank. The output end of the swing drive is connected to one end of the swing rod. The swing drive is used to drive the swing rod to drive the spray pipe to swing back and forth.

[0012] By adopting the above technical solution, one end of the symmetrically arranged swing rod is coaxially connected to the spray pipe, and the other end is rotatably assembled to the inner wall of the dyeing tank, providing a stable support structure for the swing of the spray pipe and reducing the offset during the swing process; the swing drive component set on the outside is connected to the swing rod for transmission, which can accurately control the swing amplitude and frequency of the spray pipe, avoid the error of manual adjustment, ensure that the spray direction is matched with the knitted fabric conveying rhythm, further improve the spray uniformity, and at the same time reduce the intensity of manual operation.

[0013] Preferably, the lifting connector includes a vertical guide rail, a sliding seat, and a lifting drive. The vertical guide rail is symmetrically arranged on the inner side wall of the dyeing tank, and its length direction is vertical. The sliding seat is slidably mounted on the vertical guide rail, and both ends of the guide roller are rotatably connected to the sliding seat through bearings. The lifting drive is disposed on the side wall of the dyeing tank, and its output end is connected to the sliding seat and is used to drive the sliding seat to move up and down along the length direction of the vertical guide rail.

[0014] By adopting the above technical solution, the cooperation between the vertical guide rail and the sliding seat provides precise guidance for the lifting and lowering of the guide roller, avoiding skewing during the lifting and lowering process, ensuring that the axis of the guide roller is always parallel, ensuring uniform force on the knitted fabric, and the precise adjustment of the height of the guide roller to adapt to the fabric path requirements under different processes. Especially for knitted fabrics of different thicknesses, the distance between the guide roller and the spraying component can be flexibly adjusted to optimize the dye spraying effect, while avoiding the guide roller jamming from affecting the continuity of production.

[0015] Preferably, the dye liquor adding structure includes a dye liquor tank, a stirring assembly, and a heat preservation and heating assembly. The heat preservation and heating assembly includes a heat preservation jacket and a heating wire. The heat preservation jacket and the dye liquor tank are coaxially arranged inside the dye liquor tank. The heat preservation jacket divides the dye liquor tank into a heating and heat preservation chamber and a dye liquor containing chamber. The heating wire is spirally wound inside the heating and heat preservation chamber. The stirring assembly is arranged inside the dye liquor containing chamber. The stirring assembly includes a stirring shaft, a stirring paddle, and a stirring drive. The stirring drive is arranged outside the dye liquor tank. The output shaft of the stirring drive is drivenly connected to the top end of the stirring shaft. The stirring shaft is arranged at the center of the dye liquor containing chamber. The stirring paddle is fixed to the end of the stirring shaft away from the stirring drive.

[0016] By adopting the above technical solution, uniform temperature control of the dye solution can be achieved, accurately matching the temperature environment required for low-temperature enzyme oxygen refining, avoiding local overheating that could lead to enzyme inactivation or decomposition of activated oxygen; the stirring component in the dye solution container chamber drives the stirring shaft and stirring paddle to rotate through the stirring drive, which can fully mix the dye solution with enzyme preparations, activated oxygen agents and other agents, thereby improving the stability of the dye solution.

[0017] Preferably, the circulating filtration structure includes a self-cleaning filter component and a return pipeline. The self-cleaning filter component is disposed between the outlet of the dyeing tank and the return port of the dye liquor adding structure. The dye liquor in the dyeing tank flows out through the outlet of the dyeing tank, is filtered by the self-cleaning filter component, and then flows back to the dye liquor adding structure through the return pipeline.

[0018] By adopting the above technical solutions, the closed-loop circulation of dye liquor can not only significantly reduce the consumption of dye liquor and lower production costs, but also remove impurities such as cottonseed hulls and fiber debris from the dye liquor through self-cleaning filter components, preventing impurities from adhering to the surface of knitted fabric and affecting the refining quality. At the same time, it prevents impurities from clogging the spray head or pipeline, and is suitable for the high requirements of low-temperature enzyme oxygen refining for the cleanliness of dye liquor.

[0019] Preferably, the self-cleaning filter assembly includes a circulating inlet pipe, an outer filter cylinder, and an inner filter core. The outer filter cylinder and the inner filter core are coaxially arranged. Multiple filter holes are formed on the side wall of the inner filter core, and the multiple filter holes are evenly distributed along the circumference of the inner filter core. The circulating inlet pipe passes through the top of the outer filter cylinder and connects to the top of the inner filter core. A collection funnel is provided at the bottom of the inner filter core, and a slag discharge pipe is connected to the bottom of the collection funnel. The slag discharge pipe extends out of the bottom of the outer filter cylinder and is fixedly connected to the outer filter cylinder. The bottom of the outer filter cylinder is connected to the return pipe.

[0020] By adopting the above technical solution, the filter holes evenly distributed on the side wall of the filter core can ensure uniform penetration and filtration of the dye liquor, thereby improving the filtration accuracy. The collection funnel at the bottom can collect the impurities trapped by the filter, and together with the slag discharge pipe, the impurities can be discharged quickly, avoiding the accumulation of impurities in the filter assembly and thus reducing the filtration efficiency. At the same time, it simplifies the impurity cleaning process, and the slag discharge can be completed without disassembling the filter assembly.

[0021] Preferably, a rotating scraper is provided between the inner wall of the outer filter cylinder and the outer wall of the inner filter core. The rotating scraper has a pointed surface extending from the side wall near the inner filter core. The pointed surface of the rotating scraper is used to abut against the outer wall of the inner filter core. A rotating drive is provided on the outer filter cylinder to drive the rotating scraper to rotate circumferentially along the outer filter cylinder.

[0022] By adopting the above technical solution, the tip of the rotating scraper contacts the outer wall of the filter core, and can efficiently scrape off the impurities attached to the surface of the filter core during the rotation process, thereby preventing the filter holes from becoming clogged, maintaining a stable filtration flow, and extending the service life of the filter core.

[0023] Preferably, the rotary drive component includes a rotary drive motor and an annular mounting base. The output end of the rotary drive motor is connected to the center of the annular mounting base via a transmission connection. Multiple rotary scrapers are provided, and the multiple rotary scrapers are arranged at equal angular intervals along the circumference of the annular mounting base.

[0024] By adopting the above technical solution, the transmission cooperation between the rotary drive motor and the ring mounting base can drive multiple rotating scrapers to rotate synchronously, ensuring that the scrapers can scrape the filter core without dead angles. Moreover, the motor drive can precisely control the scraper speed, adapt to the filtration needs of dye liquor with different impurity contents, further improve the self-cleaning effect, and reduce manual maintenance costs.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. A spray component connected to the dye liquor addition structure is added and located inside the dyeing tank, forming a dual dye liquor contact mode of soaking and spraying. The spray component can directly spray the dye liquor onto the knitted fabric in the dyeing tank, which makes up for the defect that the dye liquor is difficult to penetrate into the gaps between the knitted fabric fibers quickly and evenly when simply soaking. By actively spraying, the dye liquor can cover the fabric surface more comprehensively, improve the uniformity of contact between the dye liquor and the knitted fabric, and ultimately improve the appearance quality of the knitted fabric. 2. The reciprocating swing function of the spray pipe through the swing connector further expands the spray range, allowing all areas of the knitted fabric to be evenly contacted by the low-temperature enzyme oxygen dyeing solution, effectively improving the consistency of scouring. 3. During rotation, it can efficiently scrape off impurities attached to the surface of the filter core, preventing filter pore blockage at the source, maintaining a stable filtration flow, and extending the service life of the filter core. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a cross-sectional schematic diagram of a portion of the structure of this application; Figure 3 This is a cross-sectional schematic diagram of a portion of the structure of this application; Figure 4 yes Figure 1 A magnified view of part A in the middle; Figure 5 This is a cross-sectional schematic diagram of a portion of the structure of this application.

[0027] Explanation of reference numerals in the attached drawings: 110, dyeing tank; 111, fabric inlet; 112, fabric outlet; 113, dye liquor inlet; 120, spray assembly; 121, branch pipeline; 122, spray pipe; 123, spray head; 124, swing connector; 125, swing rod; 126, swing drive; 130, guide roller; 131, lifting connector; 132, vertical guide rail; 133, sliding seat; 134, lifting drive; 140, dye liquor tank; 141, reagent addition port; 142, heating and insulation chamber; 143, dye liquor receiving chamber; 144, main... 150. Liquid supply pipe; 151. Stirring assembly; 152. Stirring paddle; 153. Stirring drive component; 160. Heat preservation and heating assembly; 161. Heat preservation jacket; 162. Heating wire; 170. Self-cleaning filter assembly; 171. Circulating liquid inlet pipe; 172. Filter outer cylinder; 173. Filter inner core; 174. Filter hole; 175. Collection funnel; 176. Slag discharge pipe; 177. Filtrate outlet; 180. Return pipeline; 190. Rotary scraper; 191. Rotary drive component; 192. Rotary drive motor; 193. Annular mounting base. Detailed Implementation

[0028] The present application will be further described in detail below with reference to the accompanying drawings.

[0029] This application discloses a dyeing apparatus for low-temperature enzymatic oxygen refining of knitted fabrics, which improves the uniformity of contact between the dye liquor and the knitted fabric, and ultimately improves the appearance quality of the knitted fabric.

[0030] refer to Figures 1-5 A dyeing apparatus for low-temperature enzyme-oxygen refining of knitted fabrics includes a dyeing tank 110, a dye liquor adding structure, and a circulating filtration structure. The dye liquor adding structure is fixedly installed on one side of the dyeing tank 110 and is used to continuously supply low-temperature enzyme-oxygen refining dye liquor into the dyeing tank 110. A fabric inlet 111 is opened on the upper part of one side wall of the dyeing tank 110, and a fabric outlet 112 is opened on the lower part of the opposite side wall. A dye liquor inlet 113 is also opened on the side wall of the dyeing tank 110, and the dye liquor inlet 113 is connected to the dye liquor adding structure through a pipeline. The structures are interconnected. The circulating filtration structure is connected in series between the outlet of the dyeing tank 110 and the return port of the dye liquor addition structure through a pipeline, forming a closed-loop circulation path for the dye liquor. A spray assembly 120 is installed above the dyeing tank 110. The spray assembly 120 is connected to the dye liquor addition structure through a branch pipeline 121 and is used to actively spray dye liquor onto the knitted fabric in the dyeing tank 110. A guide roller 130 is installed inside the dyeing tank 110. The guide roller 130 is located below the spray assembly 120 and is used to guide the knitted fabric to be transported in the dye liquor in an orderly manner.

[0031] The spray assembly 120 includes a spray pipe 122 and a spray head 123. The spray pipe 122 is a hollow tubular structure that spans across the upper part of the internal cavity of the dyeing tank 110 in a direction perpendicular to the direction of fabric conveying. The spray heads 123 are evenly distributed along the length of the spray pipe 122 and spray downwards, directly facing the guide roller 130 and the fabric below. Both ends of the spray pipe 122 are movably connected to the inner wall of the dyeing tank 110 through a swing connector 124.

[0032] The swing connector 124 includes a swing rod 125 and a swing drive 126. The swing rod 125 is symmetrically arranged at both ends of the spray pipe 122. One end of the swing rod 125 is coaxially welded and fixed to the end of the spray pipe 122. The other end of the swing rod 125 is rotatably mounted in a bearing seat preset on the inner side wall of the dyeing tank 110 through a bearing. The swing drive 126 is a motor, which is fixedly set on the outer side wall of the dyeing tank 110. The output end of the swing drive 126 passes through the side wall of the dyeing tank 110 and is connected to the end of the swing rod 125 for transmission. The swing rod 125 drives the spray pipe 122 to swing back and forth around the axis of the swing rod 125, thereby expanding the spraying range of the spray head 123.

[0033] One end of the spray pipe 122 is connected to the branch pipe 121 via a rotary joint, and the other end of the branch pipe 121 is connected to the dye liquor adding structure. The rotary joint ensures that the branch pipe 121 remains connected during the reciprocating swing of the spray pipe 122, without any tangling or jamming.

[0034] Multiple guide rollers 130 are provided, and the multiple guide rollers 130 are arranged alternately up and down along the conveying direction of the knitted fabric to form a meandering fabric conveying path. The two ends of the guide rollers 130 are connected to the inner wall of the dyeing tank 110 through lifting connectors 131. The lifting connectors 131 include vertical guide rails 132, sliding seats 133 and lifting drive components 134. The vertical guide rails 132 are strip-shaped groove structures, symmetrically welded and fixed to the inner wall of the dyeing tank 110, and the length direction of the vertical guide rails 132 is set in the vertical direction. The sliding seats 133 are block structures and are slidably assembled in the groove of the vertical guide rails 132. The two ends of the guide rollers 130 are rotatably connected to the sliding seats 133 through bearings to ensure that the guide rollers 130 can rotate synchronously with the knitted fabric conveying.

[0035] The lifting drive component 134 is a cylinder, which is fixedly installed on the side wall of the dyeing pool 110. The output end of the lifting drive component 134 passes through the side wall of the dyeing pool 110 and is fixedly connected to the sliding seat 133. It is used to drive the sliding seat 133 to move up and down along the length of the vertical guide rail 132, thereby driving the guide roller 130 to adjust its height position.

[0036] In addition, the dye liquor adding structure includes a dye liquor tank 140, a stirring assembly 150, and a heat preservation and heating assembly 160. The dye liquor tank 140 is a vertical cylindrical tank with a reagent adding port 141 at the top for adding enzyme preparations, activating oxygen agents, and refining auxiliaries into the dye liquor tank 140. The heat preservation and heating assembly 160 includes a heat preservation jacket 161 and a heating wire 162. The heat preservation jacket 161 is coaxially arranged with the dye liquor tank 140 inside the dye liquor tank 140, dividing the internal space of the dye liquor tank 140 into two parts: a heating and heat preservation chamber 142 and a dye liquor containing chamber 143. The heating wire 162 is spirally wound inside the heating and heat preservation chamber 142. The two ends of the heating and heat preservation chamber 142 are connected to an external heat-conducting medium circulation system through pipelines to maintain the temperature stability inside the dye liquor containing chamber 143.

[0037] The stirring assembly 150 is disposed in the dye liquor containing cavity 143 and includes a stirring shaft 151, a stirring paddle 152 and a stirring drive 153. The stirring drive 153 is a motor, which is fixedly disposed on the top outer side of the dye liquor tank 140. The output shaft of the stirring drive 153 passes through the top of the dye liquor tank 140 and is coaxially connected to the top end of the stirring shaft 151. The stirring shaft 151 is vertically suspended at the center of the dye liquor containing cavity 143. The stirring paddle 152 includes multiple arc-shaped blades, which are equally spaced along the circumference of the stirring shaft 151. A gap is left between the edge of the blade of the stirring paddle 152 and the inner wall of the dye liquor tank 140 to avoid collision with the tank wall during the stirring process.

[0038] The bottom of the dyeing tank 140 is provided with a main supply pipe 144. The main supply pipe 144 is divided into two branches through a diverter. One branch is connected to the dyeing inlet 113 of the dyeing pool 110, and the other branch is connected to the spray pipe 122 through a branch pipe 121.

[0039] The circulating filtration structure includes a self-cleaning filter assembly 170 and a return pipe 180. The self-cleaning filter assembly 170 is fixedly installed on the outside of the dyeing tank 110 through the pipe, and is connected in series between the outlet of the dyeing tank 110 and the return port of the dyeing solution addition structure through the return pipe 180. The self-cleaning filter assembly 170 includes a circulating inlet pipe 171, an outer filter cylinder 172, and an inner filter core 173. The outer filter cylinder 172 is a vertical cylindrical tank, and the inner filter core 173 is a cylindrical porous structure. The inner filter core 173 and the outer filter cylinder 172 are coaxially arranged inside the outer filter cylinder 172. Multiple filter holes 174 are opened on the side wall of the inner filter core 173, and the multiple filter holes 174 are evenly distributed along the circumference of the inner filter core 173 on the side wall of the inner filter core 173.

[0040] One end of the circulating inlet pipe 171 is connected to the outlet of the dyeing tank 110, and the other end passes through the top of the outer filter cylinder 172 and extends into the interior of the inner filter core 173. It is used to guide the dye solution in the dyeing tank 110 into the inner filter core 173. A collection funnel 175 is welded and fixed to the bottom of the inner filter core 173. The collection funnel 175 has an inverted conical structure. The bottom of the collection funnel 175 is connected to a slag discharge pipe 176. The slag discharge pipe 176 passes through the bottom of the outer filter cylinder 172 and is welded and fixed to the outer filter cylinder 172. In another embodiment, a mechanical valve is also installed on the slag discharge pipe 176 for periodically discharging the trapped impurities. A filtrate outlet 177 is opened at the bottom of the outer filter cylinder 172. The filtrate outlet 177 is connected to the return port of the dye solution addition structure through the return pipe 180. The return port is opened on the upper part of the side wall of the dye solution tank 140 for returning the filtered clean dye solution to the dye solution receiving cavity 143.

[0041] A rotating scraper 190 is disposed between the inner wall of the outer filter cylinder 172 and the outer wall of the inner filter core 173. One side wall of the rotating scraper 190 extends a pointed surface, which elastically abuts against the outer wall of the inner filter core 173. A rotating drive component 191 is disposed on the outer filter cylinder 172 to drive the rotating scraper 190 to rotate circumferentially around the outer filter cylinder 172. The rotating drive component 191 includes a rotating drive motor 192 and an annular mounting base 193. The rotating drive motor 192 is fixedly disposed on the top outer side of the outer filter cylinder 172. The output end of the machine 192 passes through the top of the filter outer cylinder 172 and is connected to the center of the annular mounting base 193. The annular mounting base 193 is horizontally suspended inside the filter outer cylinder 172. Multiple rotating scrapers 190 are welded and fixed at equal angles along the circumference of the annular mounting base 193. When the rotating drive motor 192 drives the annular mounting base 193 to rotate, it drives the rotating scrapers 190 to rotate along the circumference of the outer wall of the filter inner core 173, scraping off the impurities attached to the surface of the filter inner core 173. The impurities fall into the collection funnel 175 under the action of gravity.

[0042] The implementation principle of a dyeing device for low-temperature enzyme-oxygen refining of knitted fabrics according to an embodiment of this application is as follows: First, enzyme preparation, activating oxygen agent and refining auxiliaries are added to the reagent addition port 141 of the dye bath tank 140. The stirring component 150 is started, driving the stirring paddle 152 to rotate, so that the reagents and water are fully mixed to form a low-temperature enzyme-oxygen refining dye bath. At the same time, the heat preservation and heating component 160 is started to maintain the stable temperature of the dye bath. The dye bath is divided into two paths through the main supply pipe 144. One path enters the dyeing pool 110 to form an immersion dye bath, and the other path is sprayed onto the surface of the knitted fabric through the spray pipe 122 and the spray head 123. The swing drive component 126 is started to drive the spray pipe 122 to swing back and forth to expand the spraying range.

[0043] The knitted fabric is fed into the dyeing tank 110 through the inlet 111, bypassing the guide roller 130 to form a meandering conveying path, and exiting through the outlet 112. According to the thickness and elasticity of the knitted fabric, the height of the guide roller 130 is adjusted by the lifting drive component 134 to optimize the fabric conveying path. Under the guidance of the guide roller 130, the knitted fabric is continuously output from the outlet 112 after contact with the dual dye liquor of soaking and spraying, completing the low-temperature enzyme oxygen refining dyeing operation. This makes up for the defect of uneven dye liquor penetration in traditional simple soaking dyeing. With the reciprocating swing of the spray pipe 122 and the height adjustment of the guide roller 130, uniform contact between each area of ​​the knitted fabric and the dye liquor is achieved.

[0044] In addition, the circulating filtration structure is activated periodically. Under the action of gravity, the dye liquor in the dyeing tank 110 flows into the filter core 173 of the self-cleaning filter assembly 170 through the outlet. After being filtered through the filter holes 174 on the side wall of the filter core 173, it flows back to the dye liquor tank 140 through the return pipeline 180. The rotating drive component 191 is activated to drive the rotating scraper 190 to rotate and scrape off the impurities on the surface of the filter core 173. The impurities fall into the collection funnel 175. The valve of the slag discharge pipe 176 is opened periodically to discharge the impurities.

[0045] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A dyeing apparatus for low temperature enzyme oxygen refining of knitted fabric, characterized in that: The application relates to a dyeing pool (110), a dye solution adding structure and a circulating filtering structure, the dye solution adding structure is arranged on one side of the dyeing pool (110) and communicates with the dyeing pool (110), the circulating filtering structure is connected in series between the dyeing pool (110) and the dye solution adding structure, a spraying assembly (120) and a cloth guide roller (130) are arranged on the dyeing pool (110), the spraying assembly (120) is arranged on the upper side of the inside of the dyeing pool (110) and communicates with the dye solution adding structure, the spraying assembly (120) is used for spraying dye solution towards knitted cloth in the dyeing pool (110), and the cloth guide roller (130) is arranged in the inside of the dyeing pool (110) and is located below the spraying assembly (120), and the cloth guide roller (130) is used for guiding the conveying of the knitted cloth in the dyeing pool (110).

2. A dyeing apparatus for low temperature enzyme oxygen refining of knitted fabric according to claim 1, characterized in that: The spraying assembly (120) comprises a spraying pipe (122) and a spraying head (123), the spraying pipe (122) is arranged along the direction perpendicular to the conveying direction of the knitted cloth, the spraying head (123) is uniformly distributed on the spraying pipe (122) along the length direction of the spraying pipe (122), and the two ends of the spraying pipe (122) are movably connected with the inner side wall of the dyeing pool (110) through swing connecting pieces (124), and the spraying pipe (122) can swing reciprocatingly around the swing connecting pieces (124).

3. A dyeing apparatus for low temperature enzyme oxygen refining of knitted fabric according to claim 2, characterized in that: The cloth guide roller (130) is arranged in a plurality of numbers, the plurality of cloth guide rollers (130) are arranged in an up-and-down staggered mode along the conveying direction of the knitted cloth, the two ends of the cloth guide roller (130) are connected with the inner side wall of the dyeing pool (110) through lifting connecting pieces (131), and the lifting connecting pieces (131) drive the cloth guide roller (130) to move up and down along the vertical direction.

4. A dyeing apparatus for low temperature enzyme oxygen refining of knitted fabric according to claim 3, characterized in that: The swing connecting piece (124) of the spraying pipe (122) comprises a swing rod (125) and a swing driving piece (126), the swing rod (125) is symmetrically arranged at the two ends of the spraying pipe (122), one end of the swing rod (125) is coaxially connected with the spraying pipe (122), the other end of the swing rod (125) is rotatably arranged on the inner wall of the dyeing pool (110), the swing driving piece (126) is arranged on the outside of the dyeing pool (110), the output end of the swing driving piece (126) is in transmission connection with one end of the swing rod (125), and the swing driving piece (126) is used for driving the swing rod (125) to drive the spraying pipe (122) to swing reciprocatingly.

5. A dyeing apparatus for low temperature enzyme oxygen refining of knitted fabric according to claim 4, characterized in that: The lifting connecting piece (131) comprises vertical guide rails (132), a sliding seat (133) and a lifting driving piece (134), the vertical guide rails (132) are symmetrically arranged on the inner side wall of the dyeing pool (110), the length direction of the vertical guide rails (132) is arranged along the vertical direction, the sliding seat (133) is slidingly assembled on the vertical guide rails (132), and the two ends of the cloth guide roller (130) are rotationally connected with the sliding seat (133) through bearings; the lifting driving piece (134) is arranged on the side wall of the dyeing pool (110), the output end of the lifting driving piece (134) is connected with the sliding seat (133) and is used for driving the sliding seat (133) to move up and down along the length direction of the vertical guide rails (132).

6. A dyeing apparatus for low temperature enzyme oxygen refining of knitted fabric according to claim 5, characterized in that: The dye solution adding structure comprises a dye solution tank (140), a stirring assembly (150) and a heat preservation and heating assembly (160), the heat preservation and heating assembly (160) comprises a heat preservation sandwich layer (161) and a heating wire (162), the heat preservation sandwich layer (161) and the dye solution tank (140) are coaxially arranged in the dye solution tank (140), the heat preservation sandwich layer (161) divides the dye solution tank (140) into a heating and heat preservation cavity (142) and a dye solution containing cavity (143), the heating wire (162) is spirally wound in the heating and heat preservation cavity (142), the stirring assembly (150) is arranged in the dye solution containing cavity (143), the stirring assembly (150) comprises a stirring shaft (151), a stirring paddle (152) and a stirring driving piece (153), the stirring driving piece (153) is arranged outside the dye solution tank (140), the output shaft of the stirring driving piece (153) is in transmission connection with the top end of the stirring shaft (151), and the stirring shaft (151) is arranged in the center of the dye solution containing cavity (143).

7. A dyeing apparatus for low temperature enzyme oxygen refining of knitted fabric according to claim 6, characterized in that: The circulating filtering structure comprises a self-cleaning filtering assembly (170) and a backflow pipeline (180), the self-cleaning filtering assembly (170) is arranged between the liquid outlet of the dyeing pool (110) and the liquid return port of the dye solution adding structure, the dye solution in the dyeing pool (110) flows out through the liquid outlet of the dyeing pool (110), is filtered through the self-cleaning filtering assembly (170) and then flows back to the dye solution adding structure through the backflow pipeline (180).

8. A dyeing apparatus for low temperature enzyme oxygen refining of knitted fabric according to claim 7, characterized in that: The self-cleaning filter assembly (170) comprises a circulating liquid inlet pipe (171), a filter outer cylinder (172) and a filter inner core (173), the filter outer cylinder (172) and the filter inner core (173) are coaxially arranged, a plurality of filter holes (174) are arranged on the side wall of the filter inner core (173), the plurality of filter holes (174) are uniformly distributed on the side wall of the filter inner core (173) in the circumferential direction of the filter inner core (173), the circulating liquid inlet pipe (171) is connected to the top of the filter inner core (173) after penetrating through the top of the filter outer cylinder (172), the bottom of the filter inner core (173) is provided with a collecting funnel (175), the bottom of the collecting funnel (175) is connected with a residue discharge pipe (176), the residue discharge pipe (176) penetrates through the bottom of the filter outer cylinder (172) and is fixedly connected with the filter outer cylinder (172), and the bottom of the filter outer cylinder (172) is connected with the return pipe (180).

9. A dyeing apparatus for low temperature enzyme oxygen refining of knitted fabric according to claim 8, characterized in that: A rotating scraper (190) is arranged between the inner wall of the filter outer cylinder (172) and the outer wall of the filter inner core (173), the side wall of the rotating scraper (190) close to the filter inner core (173) extends a pointed end face, the pointed end face of the rotating scraper (190) is used for abutting against the outer wall of the filter inner core (173), and the filter outer cylinder (172) is provided with a rotating driving member (191) for driving the rotating scraper (190) to rotate in the circumferential direction of the filter outer cylinder (172).

10. A dyeing apparatus for low temperature enzyme oxygen refining of knitted fabric according to claim 9, characterized in that: The rotating driving member (191) comprises a rotating driving motor (192) and an annular mounting seat (193), the output end of the rotating driving motor (192) is drivingly connected with the center of the annular mounting seat (193), and a plurality of rotating scrapers (190) are arranged at equal angles in the circumferential direction of the annular mounting seat (193).

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