Knitted fabric dyeing uniformity improving device

Abstract

The utility model relates to the technical field of knitting cloth dyeing, disclose a kind of knitting cloth dyeing uniformity promotion device, including support one and support two, and support one and support two between fixed installation have dyeing box, dyeing box top fixed installation has liquid storage tank, and liquid storage tank top fixed installation has micro pump, and micro pump output end is connected with conveying pipe, and conveying pipe side is fixedly connected with spray pipe, and spray pipe is fixedly connected with spray head away from conveying pipe one end.The knitting cloth dyeing uniformity promotion device, by left and right sides independent liquid storage tank respectively store cleaning agent and demineralizer, cooperate micro pump, conveying pipe and the accurate conveying system of spray head composition, realize the segmented pretreatment of knitting cloth, and cleaning agent can efficiently remove cloth surface oil stain, impurity, avoid stain to block the influence of dye liquor adhesion;Demineralizer can be targeted to remove cloth surface metal ion, prevent its and dye liquor occur adverse reaction, eliminate the inducement of dyeing unevenness from source.

Description

Technical Field

[0001] This utility model belongs to the field of knitted fabric dyeing technology, specifically, it relates to a device for improving the uniformity of knitted fabric dyeing. Background Technology

[0002] In the production and processing of knitted fabrics, dyeing is a crucial step that determines the product's appearance quality and market competitiveness. Currently, commonly used knitted fabric dyeing equipment in the industry generally suffers from insufficient pretreatment before dyeing: On the one hand, knitted fabrics are prone to adhering to impurities such as oil and dust during weaving and handling. Existing equipment often relies on a single cleaning method, which is insufficient to completely remove stubborn stains, resulting in the stained areas not fully combining with the dye liquor during dyeing, leading to color differences. On the other hand, the metal ions contained in the knitted fabric itself, such as calcium and magnesium ions, can react with the dye liquor components, altering the stability of the dye liquor. Moreover, existing equipment lacks a targeted demineralization treatment module, and residual metal ions further exacerbate uneven dyeing, ultimately resulting in patches of varying shades on the finished fabric surface, a high defect rate, and an inability to meet the quality requirements of high-end textile products. Utility Model Content

[0003] The purpose of this invention is to provide a device for improving the dyeing uniformity of knitted fabrics, so as to solve the problems mentioned in the background art.

[0004] A device for improving the uniformity of dyeing of knitted fabric includes a conveyor box one and a conveyor box two. The bottom of the conveyor box one is fixedly connected to a support one, and the bottom of the conveyor box two is fixedly connected to a support two. A dyeing box is fixedly installed between the support one and the support two.

[0005] A liquid storage tank is fixedly installed on the top of the dyeing box, and a micro pump is fixedly installed on the top of the liquid storage tank. The output end of the micro pump is connected to a delivery pipe, and a spray pipe is fixedly connected to the side of the delivery pipe. A nozzle is fixedly connected to the end of the spray pipe away from the delivery pipe. A one-way valve and a flow meter are installed at the connection between the micro pump and the delivery pipe.

[0006] The dyeing box has storage tanks installed on the top left and right sides, and the bottom of each storage tank is equipped with a liquid inlet pipe. The storage tank on the left is filled with cleaning agent, and the storage tank on the right is filled with demineralizing agent. The demineralizing agent comprises: disodium ethylenediaminetetraacetate (EDTA-2Na): 15%-20%; sodium citrate: 10%-15%; sodium gluconate: 8%-12%; and deionized water: 53%-67%. The cleaning agent contains: fatty alcohol polyoxyethylene ether (AEO-9): 8%-12%; cocamidopropyl betaine (CAB): 5%-8%; polyethylene glycol 400 (PEG-400): 3%-5%; citric acid: 0.5%-1%; and deionized water: 74%-83.5%.

[0007] In a preferred embodiment of this utility model, the detection ends of both the check valve and the flow meter extend into the interior of the delivery pipe, and both the check valve and the flow meter are electrically connected to the controller via a PLC program.

[0008] In a preferred embodiment of this utility model, a baffle is fixedly connected to the top of the dyeing box, and a high-pressure nozzle is rotatably connected to one side of the two baffles that are close to each other via a universal joint.

[0009] In a preferred embodiment of this utility model, a motor is fixedly installed on the left side of the dyeing box, the output end of the motor is connected to a rotating shaft, a support frame is fixedly connected to the outer surface of the rotating shaft, and a roller is fixedly connected to the outer surface of the support frame.

[0010] In a preferred embodiment of this utility model, the end of the rotating shaft away from the motor is connected to the inner wall of the dyeing box through a bearing seat. A through hole is provided on the left side of the dyeing box, and a ball bearing is installed in the through hole through a bearing seat. The outer surface of the rotating shaft is connected to the inner ring of the ball bearing.

[0011] In a preferred embodiment of this utility model, a diffusion box is fixedly connected to both sides of the outer surface of the roller, a liquid outlet is fixedly connected to the side of the diffusion box away from the roller, a replenishment pipe is fixedly connected to the top of the diffusion box, a telescopic spring is fixedly connected to one side of the inner wall of the diffusion box, and a movable plate is fixedly connected to the end of the telescopic spring away from the inner wall of the diffusion box. The outer surface of the movable plate is slidably connected to the inner wall of the diffusion box through a sealing ring, and the top of the movable plate does not contact the inner wall of the diffusion box.

[0012] In a preferred embodiment of this utility model, the conveyor box one and the conveyor box two have the same structure and are symmetrically distributed. Multiple conveyor rollers are movably installed inside the conveyor box one. A pressure roller is fixedly connected to the bottom of the conveyor box one near the dyeing box. A dustproof net is fixedly installed on the top of the conveyor box one.

[0013] Compared with the prior art, the present invention has the following advantages: 1. This device for improving the uniformity of dyeing knitted fabrics uses independent storage tanks on the left and right sides to store cleaning agents and demineralizing agents respectively. Combined with a precise delivery system consisting of a micro pump, delivery pipe, and nozzle, it achieves segmented pretreatment of knitted fabrics. The cleaning agent can efficiently remove oil stains and impurities from the fabric surface, preventing stains from obstructing the adhesion of the dye liquor. The demineralizing agent can specifically remove metal ions from the fabric surface, preventing them from reacting adversely with the dye liquor, thus eliminating the cause of uneven dyeing from the source.

[0014] 2. This device for improving the uniformity of dyeing of knitted fabrics uses the centrifugal force generated by the rotation of the drum to push the movable plate to seep out evenly. The dye solution is precisely attached to the surface of the drum through the outlet, and then the dye solution is evenly transferred to the fabric surface through the rolling contact between the drum and the knitted fabric. The motor speed can be flexibly adjusted, and the drum rotation speed can be adjusted according to the material and thickness of the knitted fabric, thereby controlling the contact time and penetration depth between the dye solution and the fabric surface.

[0015] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0016] In the attached diagram: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the conveyor box structure of this utility model; Figure 3 This is a schematic diagram of the internal structure of the dyeing box of this utility model; Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle; Figure 5 This is a schematic diagram of the roller structure of this utility model; Figure 6 This is a cross-sectional view of the diffusion box of this utility model.

[0017] In the diagram: 1. Conveyor box one; 101. Dustproof net; 102. Conveyor roller; 103. Pressing roller; 2. Support one; 3. Dyeing box; 301. Baffle; 302. High-pressure nozzle; 303. Motor; 304. Rotating shaft; 305. Roller; 306. Diffuser box; 3061. Liquid outlet; 3062. Liquid replenishment pipe; 3063. Telescopic spring; 3064. Movable plate; 3065. Sealing ring; 307. Support frame; 308. Bearing seat; 309. Liquid storage tank; 310. Micro pump; 311. Conveyor pipe; 312. Spray pipe; 313. Nozzle; 314. Check valve; 315. Flow meter; 4. Support two; 5. Conveyor box two. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0019] Example 1: like Figures 1 to 6 As shown, a device for improving the uniformity of dyeing of knitted fabric includes a conveyor box 1 and a conveyor box 2 5. A support 2 is fixedly connected to the bottom of the conveyor box 1, and a support 4 is fixedly connected to the bottom of the conveyor box 2 5. A dyeing box 3 is fixedly installed between the support 2 and the support 4.

[0020] Conveyor box 1 and conveyor box 2 5 have the same structure and are symmetrically distributed. Conveyor box 1 has multiple conveyor rollers 102 that are movably and fixedly installed. A pressure roller 103 is fixedly connected to the bottom of the side of conveyor box 1 near the dyeing box 3. A dustproof net 101 is fixedly installed on the top of conveyor box 1.

[0021] Since conveyor boxes 1 and 2 are structurally identical and symmetrically distributed, taking conveyor box 1 as an example, a conveyor roller 102 is fixedly installed inside it. The installation position of the conveyor roller 102 must ensure that the knitted fabric can be conveyed smoothly. A pressure roller 103 is fixedly connected to the bottom of the side of conveyor box 1 near the dyeing box 3. The distance between the pressure roller 103 and the conveyor roller 102 needs to be adjusted according to the thickness of the knitted fabric to ensure that the knitted fabric is pressed down without being excessively squeezed and damaged. Finally, a dustproof net 101 is fixedly installed on the top of conveyor box 1. The dustproof net 101 can effectively prevent external dust from entering the inside of the conveyor box and contaminating the knitted fabric.

[0022] A liquid storage tank 309 is fixedly installed on the top of the dyeing box 3. A micro pump 310 is fixedly installed on the top of the liquid storage tank 309. The output end of the micro pump 310 is connected to a delivery pipe 311. A spray pipe 312 is fixedly connected to the side of the delivery pipe 311. A nozzle 313 is fixedly connected to the end of the spray pipe 312 away from the delivery pipe 311. A one-way valve 314 and a flow meter 315 are installed at the connection between the micro pump 310 and the delivery pipe 311. The detection ends of the one-way valve 314 and the flow meter 315 extend into the interior of the delivery pipe 311. The one-way valve 314 and the flow meter 315 are electrically connected to the controller through a PLC program.

[0023] One-way valve 314 prevents backflow of pretreatment reagents or dye liquor, avoiding cross-contamination. Flow meter 315 monitors liquid flow in real time and feeds it back to the controller, automatically adjusting the working status of micro pump 310 to ensure stable reagent supply and reduce human error. Meanwhile, dustproof netting 101 on top of the conveyor box blocks external dust from entering, preventing secondary contamination of the knitted fabric during transport. Pressure rollers flatten the knitted fabric, preventing wrinkles that could lead to uneven dyeing. These multiple dimensions ensure the stability of the production process and improve the finished product qualification rate.

[0024] A baffle 301 is fixedly connected to the top of the dyeing box 3. A high-pressure nozzle 302 is rotatably connected to the side of the two baffles 301 that are close to each other through a universal joint. A motor 303 is fixedly installed on the left side of the dyeing box 3. A rotating shaft 304 is connected to the output end of the motor 303. A support frame 307 is fixedly connected to the outer surface of the rotating shaft 304. A roller 305 is fixedly connected to the outer surface of the support frame 307. The end of the rotating shaft 304 away from the motor 303 is connected to the inner wall of the dyeing box 3 through a bearing seat 308. A through hole is opened on the left side of the dyeing box 3. A ball bearing is installed in the through hole through the bearing seat 308. The outer surface of the rotating shaft 304 is connected to the inner ring of the ball bearing.

[0025] The dyeing box 3 has storage tanks 309 installed on the top left and right sides, and the bottom of each storage tank 309 is equipped with a liquid inlet pipe. The left storage tank 309 is filled with cleaning agent, and the right storage tank 309 is filled with demineralizing agent. The demineralizing agent contains: disodium EDTA-2Na (15%-20%); sodium citrate (10%-15%); sodium gluconate (8%-12%); and deionized water (53%-67%). The cleaning agent contains fatty alcohol polyoxyethylene ether AEO-9: 8%-12%; cocamidopropyl betaine CAB: 5%-8%; polyethylene glycol 400 PEG-400: 3%-5%; citric acid: 0.5%-1%; and deionized water: 74%-83.5%.

[0026] Example 2: Based on Embodiment 1, a diffusion box 306 is fixedly connected to both sides of the outer surface of the roller 305. A liquid outlet 3061 is fixedly connected to the side of the diffusion box 306 away from the roller 305. A replenishment pipe 3062 is fixedly connected to the top of the diffusion box 306. A telescopic spring 3063 is fixedly connected to one side of the inner wall of the diffusion box 306. A movable plate 3064 is fixedly connected to the end of the telescopic spring 3063 away from the inner wall of the diffusion box 306. The outer surface of the movable plate 3064 is slidably connected to the inner wall of the diffusion box 306 through a sealing ring 3065. The top of the movable plate 3064 does not contact the inner wall of the diffusion box 306. The inside of the diffusion box 306 is filled with dyeing solution.

[0027] Installation and commissioning before equipment use: Two liquid storage tanks 309 are fixedly installed on the top of the dyeing tank 3, located on the left and right sides of the top of the dyeing tank 3 respectively. Each liquid storage tank 309 has an inlet pipe installed at its bottom for replenishing the corresponding liquid. The left liquid storage tank 309 is filled with cleaning agent, and the right liquid storage tank 309 is filled with demineralizing agent.

[0028] A micro pump 310 is fixedly installed on the top of the storage tank 309. The output end of the micro pump 310 is connected to the delivery pipe 311. A spray pipe 312 is fixedly connected to the side of the delivery pipe 311, and a spray nozzle 313 is fixedly connected to the end of the spray pipe 312 away from the delivery pipe 311. At the same time, a one-way valve 314 and a flow meter 315 are installed at the connection between the micro pump 310 and the delivery pipe 311. The detection ends of both the one-way valve 314 and the flow meter 315 extend into the interior of the delivery pipe 311. The one-way valve 314 and the flow meter 315 are electrically connected to the controller through a PLC program to achieve automated control.

[0029] A baffle 301 is fixedly connected to the top of the dyeing chamber 3. The two baffles 301 are rotatably connected to a high-pressure nozzle 302 via a universal joint on their closest side. The spray angle of the high-pressure nozzle 302 can be adjusted via the universal joint to ensure thorough cleaning of the knitted fabric. A motor 303 is fixedly installed on the left side of the dyeing chamber 3. The output end of the motor 303 is connected to a rotating shaft 304. A support frame 307 is fixedly connected to the outer surface of the rotating shaft 304, and a roller 305 is fixedly connected to the outer surface of the support frame 307. The end of the rotating shaft 304 away from the motor 303 is connected to the inner wall of the dyeing chamber 3 via a bearing seat 308. A through hole is provided on the left side of the dyeing chamber 3. A ball bearing is installed in the through hole via the bearing seat 304. The outer surface of the rotating shaft 304 is connected to the inner ring of the ball bearing to ensure that the rotating shaft 304 can rotate freely.

[0030] A diffusion box 306 is fixedly connected to both sides of the outer surface of the roller 305. An outlet 3061 is fixedly connected to the side of the diffusion box 306 away from the roller 305. A replenishment pipe 3062 is fixedly connected to the top of the diffusion box 306 for replenishing the dyeing solution into the diffusion box 306. A telescopic spring 3063 is fixedly connected to one side of the inner wall of the diffusion box 306. A movable plate 3064 is fixedly connected to the end of the telescopic spring 3063 away from the inner wall of the diffusion box 306. The outer surface of the movable plate 3064 is slidably connected to the inner wall of the diffusion box 306 through a sealing ring 3065, and the top of the movable plate 3064 does not contact the inner wall of the diffusion box 306, ensuring that the movable plate 3064 can slide freely within the diffusion box 306.

[0031] Prepare the solution according to the following proportions: 15%-20% disodium ethylenediaminetetraacetate (EDTA-2Na), 10%-15% sodium citrate, 8%-12% sodium gluconate, and 53%-67% deionized water. First, add the disodium ethylenediaminetetraacetate (EDTA-2Na), sodium citrate, and sodium gluconate sequentially to the deionized water. Then, stir thoroughly using a stirring device until the solid reagents are completely dissolved. After preparation, pour the demineralizing agent into the right-hand storage tank 309.

[0032] Prepare the cleaning solution according to the following proportions: fatty alcohol polyoxyethylene ether (AEO-9) 8%-12%, cocamidopropyl betaine (CAB) 5%-8%, polyethylene glycol 400 (PEG-400) 3%-5%, citric acid 0.5%-1%, and deionized water 74%-83.5%. First, add fatty alcohol polyoxyethylene ether (AEO-9), cocamidopropyl betaine (CAB), polyethylene glycol 400 (PEG-400), and citric acid sequentially to the deionized water. Then, stir thoroughly using a stirring device to ensure complete mixing of all components. After preparation, pour the cleaning solution into the left-side storage tank 309.

[0033] Working principle: The knitted fabric first enters conveyor box 1, where it is smoothly conveyed forward by conveyor rollers 102. When the fabric reaches the side of conveyor box 1 near dyeing box 3, pressure rollers 103 press it down to keep it flat as it enters dyeing box 3, preventing wrinkles from forming and affecting the uniformity of subsequent dyeing. Simultaneously, the dustproof net 101 at the top of conveyor box 1 blocks external dust from entering, preventing contamination of the fabric.

[0034] When the knitted fabric enters the dyeing tank 3, the cleaning agent in the left-side storage tank 309 is first transported to the spray pipe 312 through the delivery pipe 311 by the micro pump 310, and then evenly sprayed onto the surface of the knitted fabric through the nozzle 313. Simultaneously, the high-pressure nozzle 302 on the top baffle 301 of the dyeing tank 3 also sprays high-pressure water, working in conjunction with the cleaning agent to thoroughly clean the knitted fabric, removing oil, impurities, and other contaminants from its surface. During the cleaning process, the one-way valve 314 prevents backflow of the cleaning agent, and the flow meter 315 monitors the flow rate of the cleaning agent in real time and transmits the flow data to the controller. The controller adjusts the operating status of the micro pump 310 through a PLC program to ensure a stable supply of cleaning agent.

[0035] After cleaning, the knitted fabric continues to be conveyed forward. Meanwhile, the demineralizing agent in the right-side storage tank 309, driven by the micro-pump 310, is sprayed onto the surface of the knitted fabric through the delivery pipe 311, spray pipe 312, and nozzle 313 to demineralize the fabric, removing metal ions and preventing them from affecting subsequent dyeing quality. During this process, the one-way valve 314 and flow meter 315 respectively prevent backflow of the demineralizing agent and monitor its flow rate. The controller adjusts the micro-pump 310 based on the data from the flow meter 315 to ensure a stable supply of the demineralizing agent.

[0036] The pre-treated knitted fabric continues to be conveyed to the roller 305 inside the dyeing box 3. The motor 303 starts, driving the rotating shaft 304 to rotate. The rotating shaft 304 drives the roller 305 to rotate via the support frame 307. During the rotation of the roller 305, the dyeing solution in the diffusion box 306 is pushed by the centrifugal force to the movable plate 3064, causing the telescopic spring 3063 to deform. When the movable plate 3064 moves to a certain position, the dyeing solution will seep evenly through the outlet 3061 on the diffusion box 306 onto the surface of the roller 305. Then, as the roller 305 rotates, it evenly coats the knitted fabric with the dyeing solution, thus dyeing the knitted fabric. At the same time, the replenishment pipe 3062 at the top of the diffusion box 306 can replenish the dyeing solution in the diffusion box 306 in a timely manner to ensure that the dyeing process continues. During the dyeing process, the rotation speed of the roller 305 can be controlled by adjusting the speed of the motor 303, thereby adjusting the coating time and uniformity of the dyeing solution on the knitted fabric surface to achieve the best dyeing effect.

[0037] The dyed knitted fabric continues to be conveyed forward from roller 305 into conveyor box 2 5. The conveying roller 102 and pressure roller 103 inside conveyor box 2 5 will, like conveyor box 1 1, smoothly and evenly convey the dyed knitted fabric out of dyeing box 3, completing the entire knitted fabric dyeing process.

Claims

1. A device for improving the uniformity of dyeing of knitted fabric, comprising a first conveyor box (1) and a second conveyor box (5), wherein a first support (2) is fixedly connected to the bottom of the first conveyor box (1), and a second support (4) is fixedly connected to the bottom of the second conveyor box (5), characterized in that: A dyeing box (3) is fixedly installed between the first bracket (2) and the second bracket (4); A storage tank (309) is fixedly installed on the top of the dyeing box (3), and a micro pump (310) is fixedly installed on the top of the storage tank (309). The output end of the micro pump (310) is connected to a delivery pipe (311), and a spray pipe (312) is fixedly connected to the side of the delivery pipe (311). A nozzle (313) is fixedly connected to the end of the spray pipe (312) away from the delivery pipe (311). A one-way valve (314) and a flow meter (315) are installed at the connection between the micro pump (310) and the delivery pipe (311). The dyeing box (3) has a liquid storage tank (309) installed on the top left and right sides, and a liquid inlet pipe is installed at the bottom of the liquid storage tank (309). The liquid storage tank (309) on the left is filled with cleaning agent, and the liquid storage tank (309) on the right is filled with demineralizing agent.

2. The device for improving the dyeing uniformity of knitted fabrics according to claim 1, characterized in that: The detection ends of the one-way valve (314) and the flow meter (315) extend into the interior of the delivery pipe (311), and the one-way valve (314) and the flow meter (315) are electrically connected to the controller through a PLC program.

3. The device for improving the dyeing uniformity of knitted fabrics according to claim 1, characterized in that: The top of the dyeing box (3) is fixedly connected to a baffle (301), and a high-pressure nozzle (302) is rotatably connected to one side of the two baffles (301) through a universal joint.

4. The device for improving the dyeing uniformity of knitted fabrics according to claim 1, characterized in that: A motor (303) is fixedly installed on the left side of the dyeing box (3). The output end of the motor (303) is connected to a rotating shaft (304). A support frame (307) is fixedly connected to the outer surface of the rotating shaft (304). A roller (305) is fixedly connected to the outer surface of the support frame (307).

5. The device for improving the dyeing uniformity of knitted fabrics according to claim 4, characterized in that: The end of the rotating shaft (304) away from the motor (303) is connected to the inner wall of the dyeing box (3) through the bearing seat (308). A through hole is provided on the left side of the dyeing box (3). A ball bearing is installed in the through hole through the bearing seat (308). The outer surface of the rotating shaft (304) is connected to the inner ring of the ball bearing.

6. The device for improving the dyeing uniformity of knitted fabrics according to claim 4, characterized in that: A diffusion box (306) is fixedly connected to both sides of the outer surface of the roller (305). A liquid outlet (3061) is fixedly connected to the side of the diffusion box (306) away from the roller (305). A replenishment pipe (3062) is fixedly connected to the top of the diffusion box (306). A telescopic spring (3063) is fixedly connected to one side of the inner wall of the diffusion box (306). A movable plate (3064) is fixedly connected to the end of the telescopic spring (3063) away from the inner wall of the diffusion box (306). The outer surface of the movable plate (3064) is slidably connected to the inner wall of the diffusion box (306) through a sealing ring (3065). The top of the movable plate (3064) does not contact the inner wall of the diffusion box (306).

7. The device for improving the dyeing uniformity of knitted fabrics according to claim 1, characterized in that: The conveyor box 1 (1) and conveyor box 2 (5) have the same structure and are symmetrically distributed. Multiple conveyor rollers (102) are movably installed inside the conveyor box 1 (1). A pressure roller (103) is fixedly connected to the bottom of the side of the conveyor box 1 (1) near the dyeing box (3). A dustproof net (101) is fixedly installed on the top of the conveyor box 1 (1).

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