Continuous machine for bleaching and dyeing loose fibres

Abstract

This utility model relates to the field of fiber dyeing technology, specifically a continuous bleaching and dyeing machine for loose fibers. It includes bleaching devices, deoxygenation devices, dyeing devices, and post-dyeing treatment devices arranged continuously from front to back. The bleaching devices consist of 1 to 3 units arranged continuously from front to back, each including a bleaching tank and a steam chamber arranged continuously from front to back. The deoxygenation devices include a deoxygenation tank and a washing tank arranged continuously from front to back. The dyeing devices include a dyeing tank and a steam chamber arranged continuously from front to back. Each of the bleaching tank, deoxygenation tank, washing tank, and dyeing tank has a rolling mill device on its discharge side. The advantages of this utility model are: by integrating bleaching and dyeing into one machine, the production process is simplified, and energy consumption and labor costs are reduced.

Description

Technical Field

[0001] This utility model relates to the field of fiber dyeing technology, and in particular to a continuous machine for bleaching and dyeing loose fibers. Background Technology

[0002] In traditional techniques, loose fibers cannot be continuously dyed or bleached. Bleaching and dyeing are done by immersing in dye vats, which leads to a complex production process and high energy consumption. If cotton is dyed, the amount of wastewater discharged can reach 60 to 80 tons.

[0003] The inventor of this patent, Yang Lixin, discloses in Chinese patent document CN105155166A, "Method and Equipment for Continuous Dyeing and Bleaching of Cotton Fibers": Cotton fibers are processed into a substrate; then, the upper interlayer, substrate, and lower interlayer are sewn together by a sewing device to form a continuously transferable sewn body, thereby realizing continuous dyeing or bleaching of cotton fibers, greatly improving production efficiency and reducing costs.

[0004] However, in the current technology, bleaching and dyeing are produced separately using different equipment, and the production process is still complex and energy consumption is still high. Utility Model Content

[0005] The technical problem to be solved by this utility model is that in the prior art, bleaching and dyeing are produced separately by different equipment, which leads to a complex production process and high energy consumption.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a continuous bleaching and dyeing machine for loose fibers, including a bleaching device, a deoxygenation device, a dyeing device and a post-dyeing treatment device arranged continuously from front to back. The bleaching device has 1 to 3 units, arranged continuously from front to back. The bleaching device includes a bleaching tank and a steaming box arranged continuously from front to back. The deoxygenation device includes a deoxygenation tank and a washing tank arranged continuously from front to back. The dyeing device includes a dyeing tank and a steaming box arranged continuously from front to back. A rolling mill device is equipped on the discharge side of the bleaching tank, the deoxygenation tank, the washing tank and the dyeing tank.

[0007] In some embodiments, optionally, the deoxygenation tank is also equipped with an online concentration monitoring device for monitoring the concentration of the oxidant and an automatic deoxygenant feeding device. The first oxidation tank of the deoxygenation device has a drain outlet, and the last water washing tank of the deoxygenation device has a water inlet. The deoxygenation tank and the water washing tank are connected in sequence for backflow.

[0008] In some embodiments, optionally, the rolling mill device on the feed side of the dyeing tank is a hydraulic rolling mill device.

[0009] In some embodiments, the continuous bleaching and dyeing machine for loose fibers may optionally include a loose fiber suture preparation device and a dyeing post-treatment device. The loose fiber suture preparation device is used to prepare loose fibers into continuously transferable loose fiber sutures. The loose fiber suture preparation device is located before the bleaching device. The loose fiber sutures are continuously transferred into the bleaching device, the deoxygenation device, the dyeing device, and the dyeing post-treatment device in sequence.

[0010] In some embodiments, the dyeing post-treatment apparatus may optionally include a washing apparatus and a drying apparatus arranged continuously from front to back.

[0011] The beneficial effects of this utility model are: by rationally setting up the bleaching and dyeing related devices and by adding an oxygen removal device, bleaching and dyeing can be integrated into one device, which simplifies the production process and reduces energy consumption and labor costs.

[0012] By sewing loose fibers, such as cotton, into loose fiber sewn bodies, continuous conveying of loose fibers can be achieved, allowing the loose fibers to be continuously bleached and dyed through this loose fiber bleaching and dyeing continuous machine;

[0013] Intelligent automatic monitoring and feeding were achieved through online concentration monitoring devices and automatic oxygen scavenger feeding devices;

[0014] The continuous bleaching and dyeing machine for cotton fibers produces only less than 10% of the wastewater generated by conventional vat dyeing, generating only about 4 tons of wastewater per ton of cotton, with a production capacity of 2 tons per hour. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the two-stage bleaching device of this utility model;

[0018] Figure 3 This is a schematic diagram of the deoxygenation device and dyeing device of this utility model;

[0019] Figure 4 This is a schematic diagram of the dyeing post-treatment device of this utility model;

[0020] In the diagram, 1. Bleaching device, 1-1. Bleaching tank, 2. Deoxygenation device, 2-1. Deoxygenation tank, 3. Dyeing device, 3-1. Dyeing tank; 4. Post-dyeing treatment device, 4-1. Softening tank, 4-2. Drying device, 5. Steam box, 6. Washing tank, 7. Rolling device, 8. Loose fiber sewn body preparation device, 8-1. Storage device. Detailed Implementation

[0021] like Figures 1-4 As shown, a continuous bleaching and dyeing machine for loose fibers includes a bleaching device 1, a deoxygenation device 2, a dyeing device 3, and a post-dyeing treatment device 4 arranged continuously from front to back. There are 1 to 3 bleaching devices 1 arranged continuously from front to back. The bleaching device 1 includes a bleaching tank 1-1 and a steaming box 5 arranged continuously from front to back. The deoxygenation device 2 includes a deoxygenation tank 2-1 and a washing tank 6 arranged continuously from front to back. The dyeing device 3 includes a dyeing tank 3-1 and a steaming box 5 arranged continuously from front to back. A rolling device 7 is provided on the discharge side of the bleaching tank 1-1, the deoxygenation tank 2-1, the washing tank 6, and the dyeing tank 3-1.

[0022] The deoxygenation tank 2-1 is also equipped with an online concentration monitoring device for monitoring the concentration of oxidant and an automatic deoxygenant feeding device. The first oxidation tank of the deoxygenation device 2 has a drain outlet, and the last water washing tank 6 of the deoxygenation device 2 has a water inlet. The deoxygenation tank 2-1 and the water washing tank 6 are connected in sequence for backflow.

[0023] In bleaching tank 1-1, hydrogen peroxide is injected into the fibers.

[0024] The automatic oxygen scavenger feeding device is specifically a sodium hydrosulfite automatic feeding device, which automatically adds an appropriate amount of sodium hydrosulfite based on the monitoring results of the online concentration monitoring device.

[0025] When dyeing with reactive dyes, the padding device 7 on the feed side of dyeing tank 3-1 is a hydraulic padding device with a lower liquid extraction rate compared to a conventional padding device. The hydraulic padding device can provide greater pressure than a conventional padding device, controlling the liquid extraction rate of the fibers entering dyeing tank 3-1 to around 60%. Meanwhile, the padding device on the feed side of dyeing tank 3-1 is a conventional padding device, controlling the liquid extraction rate of the fibers exiting dyeing tank 3-1 to around 100%. This allows the dye to be injected using the padding difference.

[0026] This continuous bleaching and dyeing machine for loose fibers also includes a loose fiber suture preparation device 8 and a dyeing post-treatment device 4. The loose fiber suture preparation device 8 is used to prepare loose fibers into continuously transferable loose fiber sutures. The loose fiber suture preparation device 8 is located before the bleaching device 1. The loose fiber sutures are continuously transferred into the bleaching device 1, the deoxygenation device 2, the dyeing device 3, and the dyeing post-treatment device 4. The dyeing post-treatment device 4 includes a washing device and a drying device 4-2 arranged continuously from front to back.

[0027] To ensure the continuous delivery of loose fiber sutures, the loose fiber suture preparation device 8 has a storage device 8-1. The loose fiber sutures prepared by the loose fiber suture preparation device 8 are stored in the storage device 8-1, and the loose fiber sutures are continuously output from the storage device 8-1.

[0028] like Figures 2-4 As shown, there are two bleaching devices 1, each with one bleaching tank 1-1 and one steam chamber 5, namely bleaching tank No. 1, steam chamber No. 1, bleaching tank No. 2, and steam chamber No. 2. The deoxygenation device 2 has one deoxygenation tank 2-1 and two washing tanks 6. The dyeing device 3 has one dyeing tank 3-1 and one steam chamber 5. The post-dyeing treatment device 4 has four washing tanks 6 arranged continuously from front to back and one softening tank 4-1. A rolling mill device 7 is also provided on the discharge side of the softening tank 4-1.

[0029] The production process of continuous bleaching and dyeing of loose fibers, such as cotton fibers, using this continuous loose fiber bleaching and dyeing machine is as follows:

[0030] The cotton fibers are prepared into loose fiber sewn bodies by the loose fiber sewn body preparation device 8. The loose fiber sewn bodies are stored in the storage device 8-1. The storage device 8-1 continuously outputs the loose fiber sewn bodies to the No. 1 bleaching tank. The loose fiber sewn bodies are injected with hydrogen peroxide in the No. 1 bleaching tank, and then steam bleached in the No. 1 steam box. Then, the hydrogen peroxide is injected and steam bleached again in the No. 2 bleaching tank and the No. 2 steam box in sequence. The bleaching effect of loose fibers can be guaranteed after two steam bleaching processes.

[0031] After bleaching, the loose fiber suture enters the deoxygenation tank 2-1 of the deoxygenation device 2. In the deoxygenation tank 2-1, the residual hydrogen peroxide from the bleaching process is removed by sodium hydrosulfite. Then, it passes through two water washing tanks 6 in sequence to remove the residual sodium hydrosulfite. The clean water used for washing enters from the inlet of the last water washing tank 6 of the deoxygenation device 2, and then flows back to the deoxygenation tank 2-1 by reverse flow. Finally, it is discharged from the drain outlet of the deoxygenation tank 2-1.

[0032] After deoxygenation, the loose fiber suture enters the dyeing tank 3-1 of the dyeing device 3 to dye the fibers with dye. After dyeing, it enters the steaming box 5 for color fixing treatment.

[0033] After dyeing, the loose fiber suture body then enters the washing device of the dyeing post-treatment device 4, and is thoroughly cleaned and softened by passing through 4 washing tanks 6 and 1 softening tank 4-1 in sequence.

[0034] Finally, the loose fiber sutures, after being processed in the softening tank 4-1, are conveyed to the drying device 4-2 for drying.

[0035] The above-mentioned continuous bleaching and dyeing production process is suitable for dyeing light and medium-colored reactive dyes. When dyeing dark-colored reactive dyes, the bleaching device 1 and the deoxygenation device 2 can be skipped, and the dyeing device 3 can be directly entered for dyeing.

[0036] This continuous fiber bleaching and dyeing machine is suitable not only for cotton fibers, but also for cellulosic fibers such as linen, viscose, Tencel, and Modal.

[0037] This continuous fiber bleaching and dyeing machine is suitable not only for continuous bleaching and dyeing production, but also for continuous bleaching and whitening production, continuous bleaching and degreasing production, and continuous bleaching and modification production.

[0038] The continuous bleaching and whitening process of loose fibers, such as cotton fibers, using this continuous loose fiber bleaching and dyeing machine is as follows:

[0039] The cotton fibers are prepared into loose fiber sutures by the loose fiber suture preparation device 8. The loose fiber sutures are stored in the storage device 8-1. The storage device 8-1 continuously outputs the loose fiber sutures to the No. 1 bleaching tank. The loose fiber sutures are injected with hydrogen peroxide and whitening agent in the No. 1 bleaching tank, and then steamed and bleached in the No. 1 steaming box. Then, hydrogen peroxide and whitening agent are injected and steamed and bleached in the No. 2 bleaching tank and the No. 2 steaming box in sequence. Finally, they enter the steaming box 5 of the dyeing device 3 for steaming, thus completing the bleaching and whitening of the loose fibers.

[0040] After bleaching and whitening, the loose fiber sutures enter the dyeing post-treatment device 4 and are thoroughly cleaned and softened by passing through four washing tanks 6 and one softening tank 4-1 in sequence.

[0041] Finally, the loose fiber sutures, after being processed in the softening tank 4-1, are conveyed to the drying device 4-2 for drying.

[0042] The continuous bleaching and degreasing process of loose fibers, such as cotton fibers, using this continuous loose fiber bleaching and dyeing machine is as follows:

[0043] The cotton fibers are prepared into loose fiber sutures by the loose fiber suture preparation device 8. The loose fiber sutures are stored in the storage device 8-1. The storage device 8-1 continuously outputs the loose fiber sutures to the No. 1 bleaching tank. The loose fiber sutures are injected with hydrogen peroxide and degreasing agent in the No. 1 bleaching tank, and then steamed and bleached in the No. 1 steaming box. Then, hydrogen peroxide and degreasing agent are injected and steamed and bleached in the No. 2 bleaching tank and the No. 2 steaming box in sequence. Then, they enter the steaming box 5 of the dyeing device 3 for steaming to complete the bleaching and degreasing of the loose fibers.

[0044] After bleaching and degreasing, the loose fiber sutures enter the dyeing post-treatment device 4 and are thoroughly washed in four water washing tanks 6 in sequence.

[0045] Finally, the loose fiber sewn body, after being washed, is conveyed to the drying device 4-2 for drying.

[0046] The production process of continuous bleaching and modification of loose fibers, such as cotton fibers, using this continuous loose fiber bleaching and dyeing machine is as follows:

[0047] The cotton fibers are prepared into loose fiber sewn bodies by the loose fiber sewn body preparation device 8. The loose fiber sewn bodies are stored in the storage device 8-1. The storage device 8-1 continuously outputs the loose fiber sewn bodies to the No. 1 bleaching tank. The loose fiber sewn bodies are injected with hydrogen peroxide in the No. 1 bleaching tank, and then steamed and bleached in the No. 1 steaming box. Then, hydrogen peroxide is injected and steamed and bleached in the No. 2 bleaching tank and the No. 2 steaming box in sequence. Then, they enter one of the washing tanks 6 of the deoxygenation device 2 and a modifier such as cationic modifier is injected. Then, they enter the steaming box 5 of the dyeing device 3 for steaming, thus completing the bleaching and modification of the loose fibers.

[0048] After bleaching and modification, the loose fiber sutures are placed into the dyeing post-treatment device 4, where they are thoroughly cleaned and softened by passing through four washing tanks 6 and one softening tank 4-1 in sequence.

[0049] Finally, the loose fiber sutures, after being processed in the softening tank 4-1, are conveyed to the drying device 4-2 for drying.

Claims

1. A continuous open-width bleaching and dyeing machine, characterized in that: The device includes a bleaching device (1), a deoxygenation device (2), a dyeing device (3), and a post-dyeing treatment device (4) arranged continuously from front to back. There are 1 to 3 bleaching devices (1) arranged continuously from front to back. The bleaching device (1) includes a bleaching tank (1-1) and a steam box (5) arranged continuously from front to back. The deoxygenation device (2) includes a deoxygenation tank (2-1) and a washing tank (6) arranged continuously from front to back. The dyeing device (3) includes a dyeing tank (3-1) and a steam box (5) arranged continuously from front to back. The discharge side of the bleaching tank (1-1), the deoxygenation tank (2-1), the washing tank (6), and the dyeing tank (3-1) are all equipped with a rolling mill device (7).

2. The open fibre bleaching and dyeing continuous machine according to claim 1, characterized in that: The deoxygenation tank (2-1) is also equipped with an online concentration monitoring device for monitoring the concentration of oxidant and an automatic deoxygenator feeding device. The first oxidation tank of the deoxygenation device (2) has a drain outlet, and the last water washing tank (6) of the deoxygenation device (2) has a water inlet. The deoxygenation tank (2-1) and the water washing tank (6) are connected in sequence for backflow.

3. The open fiber bleaching and dyeing continuous machine according to claim 1, characterized in that: The rolling mill device (7) on the feeding side of the dyeing tank (3-1) is a hydraulic rolling mill device.

4. The open fiber bleaching and dyeing continuous machine according to claim 1, characterized in that: It also includes a loose fiber suture preparation device (8) and a dyeing post-treatment device (4). The loose fiber suture preparation device (8) is used to prepare loose fibers into a continuously transferable loose fiber suture. The loose fiber suture preparation device (8) is located before the bleaching device (1). The loose fiber suture enters the bleaching device (1), deoxygenation device (2), dyeing device (3) and dyeing post-treatment device (4) in sequence by continuous transmission.

5. The open fibre bleaching and dyeing continuous machine according to claim 4, characterized in that: The dyeing post-treatment device (4) includes a washing device and a drying device (4-2) arranged continuously from front to back.

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