CN108866871B - Photocatalytic stripping device and method for bulk fiber - Google Patents

Abstract

The invention discloses a bulk fiber photocatalytic color stripping device and method. The device comprises: an opaque container and a first rotating mechanism, a photocatalytic color stripping solution is arranged in the opaque container, and a container with holes at the bottom is also arranged in the opaque container. The support and the second rotating mechanism, the second rotating mechanism is arranged under the container with a hole in the bottom, the oxygen increasing device is arranged on the second rotating mechanism, the top of the opaque container is provided with a first opening, and the container with a hole in the bottom can be entered from the first opening For the opaque container, the supporting member is used to support the container with a hole in the bottom. The top of the container with a hole in the bottom is provided with a second opening. The first rotating mechanism is provided with a reaction lamp, and the reaction lamp can enter the container with a hole in the bottom through the second opening. The bulk fiber photocatalytic stripping device and method of the present invention have simple equipment and convenient operation, do not need to use traditional oxidizing agents or reducing agents, and a large amount of acid and alkali, and have the advantages of ecological protection, energy saving and emission reduction.

Description

Photocatalytic color stripping device and method for bulk fiber

technical field

The invention relates to the technical field of textile printing and dyeing, in particular to a photocatalytic color stripping device and method for loose fibers.

Background technique

In recent years, with the continuous improvement and renewal of printing and dyeing processing technology and equipment, the authenticity rate of printing and dyeing processing products has continued to increase. However, in actual production, due to human error or printing and dyeing equipment stopping halfway, various printing and dyeing fabrics will also have printing and dyeing defects such as uneven dyeing, color jumping lights, color points, color spots, and color difference. Usually, when there is a problem with the printed and dyed fabric, two methods are often used to deal with the defective printed and dyed product. One is to change the dyed light-colored fabric to a dark-colored fabric, and the other is to re-dye the fabric after stripping the color. However, in actual production, re-dyeing after stripping the fabric is the most commonly used. Color stripping refers to using physical or/and chemical reaction methods to desorb and peel off the dyes on the fabrics or to destroy the structure of the fabrics that have defects during the printing and dyeing process without affecting the secondary use of the fabrics. In order to realize the fading or decolorization of the fabric. In the traditional chemical stripping method, it can be generally divided into two types according to the treatment process and method, one is the dipping method, and the other is the padding method. The equipment used in the dipping method is a dyeing vat. The process is mainly to place the fabric in a dyeing vat with a high-concentration stripping solution (such as hydrogen peroxide, sodium hypochlorite, hydrosulfite, carving white powder, etc.). , then take out the fabric, wash thoroughly with water and dry. Yet the dipping method is owing to needing the stripping liquid of the high concentration of dipping in the dye vat for a long time, although the stripping effect is good, the damage to fabric is very serious. The main equipment used in the padding method is a padding car, etc. The process is to pass the fabric through multiple padding high-concentration stripping solutions (such as hydrogen peroxide, sodium hypochlorite, hydrosulfite, carving white powder, etc.), and then remove the color after stripping. The peeling reaction is carried out in the unit, and finally it is dried by washing with water several times. However, although the padding method overcomes the shortcoming of causing damage to the fabric due to long-term immersion in the dipping method, it also has some defects, such as too short padding time, limited liquid rate on the fabric, low stripping efficiency, and unsatisfactory effect. wait. Although it has been suggested that the number of times of padding can be increased to improve it, it is still difficult to fundamentally solve the problem.

At the same time, these traditional stripping processes often need to use a large amount of chemicals such as reducing agents or oxidizing agents, and generally need to be carried out under high temperature and certain acid-base conditions to achieve the stripping of the dye in the inner phase of the fiber. And its process is long, consumes a lot of chemicals, consumes water resources and energy, and finally also needs to discharge a large amount of sewage, which has caused serious damage to the ecological environment. Therefore, the development of a green, ecological and efficient stripping method and its equipment system can not only realize the stripping of colored objects in a short period of time, so that the stripping effect can reach the expected value, but at the same time it will not cause serious pollution to the ecological environment , is imminent.

Usually in the dyeing and finishing process, different forms of products often have different requirements for the equipment and processing methods required for processing. Therefore, it is of great significance to design different stripping devices and processing methods according to the specific existence forms of colored products to meet the needs of good stripping. In colored products, the photocatalytic stripping process of bulk fibers is significantly different from that of conventional fabrics, so ordinary fabric photocatalytic stripping devices are not enough to effectively achieve the uniformity of bulk fiber stripping and the stripping of internal dyes. Therefore, in order to solve the above problems, a new photocatalytic stripping device is needed to realize the stripping of loose fibers.

Contents of the invention

Aiming at the deficiencies of the prior art, one of the purposes of the present invention is to provide an eco-friendly, energy-saving, emission-reducing, and evenly stripped fiber photocatalytic stripping device, which adopts the following technical solutions.

A photocatalytic stripping device for loose fibers, which includes: an opaque container and a first rotating mechanism, a photocatalytic stripping solution is arranged in the opaque container, a container with holes at the bottom, a support member and The second rotating mechanism, the second rotating mechanism is arranged under the container with a hole in the bottom, the oxygen increasing device is arranged on the second rotating mechanism, the top of the opaque container is provided with a first opening, and the bottom has a hole The container can enter the opaque container from the first opening, the support member is used to support the bottom holed container, the top of the bottom holed container is provided with a second opening, and the first rotating mechanism is provided with A reaction lamp is accessible from the second opening into the bottom perforated container.

As a further improvement of the present invention, a cleaning tank is also included, and a cleaning liquid is provided in the cleaning tank.

As a further improvement of the present invention, it also includes a linear module, the linear module is provided with a grasping mechanism, and the grasping mechanism is used to grasp the container with a hole at the bottom, and the opaque container and the cleaning tank reciprocating motion between them.

As a further improvement of the present invention, the grabbing mechanism is a manipulator.

As a further improvement of the present invention, the container with a hole in the bottom is provided with a protrusion cooperating with the grabbing mechanism.

As a further improvement of the present invention, a water inlet pipe and a water outlet pipe are connected to the cleaning tank.

As a further improvement of the present invention, the reaction lamp is a low-pressure ultraviolet mercury lamp.

As a further improvement of the present invention, the photocatalytic stripping solution uses nanopowder as the photocatalyst.

As a further improvement of the present invention, the number of the reaction lamps is three, wherein one reaction lamp is arranged on the rotation axis of the first rotation mechanism, and the other two reaction lamps are symmetrically arranged on both sides of the rotation axis of the first rotation mechanism. side.

The second object of the present invention is to provide an ecologically-friendly, energy-saving and emission-reducing method for photocatalytic stripping of loose fibers, which is applied to the above-mentioned photocatalytic stripping device for bulk fibers, which includes the following steps:

Loose fibers are placed in the container with a hole in the bottom and immersed in the photocatalytic stripping solution;

The first rotating mechanism drives the reaction lamp to rotate, and the second rotating mechanism drives the oxygen increasing device to rotate to strip the loose fiber.

Beneficial effects of the present invention:

1. The equipment is simple and easy to operate. Due to the use of photocatalytic stripping technology, there is no need to use traditional oxidants or reducing agents, as well as a large amount of acid and alkali. It is applicable to a wide range of pH values and can achieve stripping of fabrics under normal temperature and pressure. Color treatment, so it has the advantages of ecological environmental protection, energy saving and emission reduction;

2. The first rotating mechanism drives the reaction lamp to rotate, and the second rotating mechanism drives the oxygen increasing device to rotate, which can make the loose fiber stripping more uniform and reduce the difficulty of bulk fiber photocatalytic stripping;

The above description is only an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, it can be implemented according to the contents of the description, and in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable , the following preferred embodiments are specifically cited below, and are described in detail as follows in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is a schematic structural view of a bulk fiber photocatalytic stripping device in an embodiment of the present invention.

Marking description: 1. First rotating mechanism; 2. Reaction lamp; 3. Container with holes at the bottom; 4. Support member; 5. Aeration device; 6. Second rotating mechanism; 7. Opaque container; 8. Photocatalytic stripping Color solution; 9. Grabbing mechanism; 10. Water inlet pipe; 11. Water outlet pipe; 12. Cleaning tank; 13. Linear module; 14. Protrusion.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.

As shown in Figure 1, it is a photocatalytic stripping device for loose fibers in the embodiment of the present invention, the photocatalytic stripping device for loose fibers includes a first rotating mechanism 1 and an opaque container 7, and a photocatalytic stripping device is arranged in the opaque container 7. solution 8, the opaque container 7 is also provided with a bottom perforated container 3, a support member 4 and a second rotating mechanism 6, the second rotating mechanism 6 is located below the bottom perforated container 3, and the second rotating mechanism 6 is provided with an oxygen increasing device 5. The bottom of the container 3 with holes at the bottom is evenly provided with mesh holes, which can make the oxygen produced by the oxygen increasing device 5 evenly disperse into the photocatalytic stripping solution 8, which is beneficial to the uniform stripping. In this embodiment, the number of aeration devices 5 is four, and the four aeration devices 5 are evenly arranged around the rotation axis of the second rotation mechanism 6 . In other embodiments of the present invention, the number and positions of the oxygen increasing devices can be set freely according to needs. In this embodiment, the aeration device is an aeration pump.

The top of the opaque container 7 is provided with a first opening, and the container 3 with a hole at the bottom can enter the opaque container 7 through the first opening. The support member 4 is used to support the container 3 with a hole at the bottom, and the top of the container 3 with a hole at the bottom is provided with a second opening. The first rotating mechanism 1 is provided with a reaction lamp 2, which can enter the container 3 with a hole at the bottom through the second opening. The reaction lamp 2 is a low-pressure ultraviolet mercury lamp. In this embodiment, the number of reaction lamps 2 is three, one of which is disposed on the rotation axis of the first rotation mechanism 1 , and the other two reaction lamps 2 are symmetrically disposed on both sides of the rotation axis of the first rotation mechanism 1 . In other embodiments of the present invention, the number and positions of the reaction lamps can be freely set as required.

The bulk fiber photocatalytic stripping device also includes a cleaning tank 12, which is provided with a cleaning liquid, and the cleaning tank 12 is connected with an inlet pipe 10 and an outlet pipe 11, which is convenient for replacing the cleaning liquid and realizes repeated cleaning of the loose fiber , and the number of cleanings can be adjusted according to the actual situation. In this embodiment, the cleaning solution is water.

The bulk fiber photocatalytic stripping device also includes a linear module 13, the linear module 13 is provided with a grasping mechanism 9, and the container 3 with holes at the bottom is provided with a protrusion 14 that cooperates with the grasping mechanism 9. In this embodiment Among them, the grasping mechanism 9 is a manipulator, and the grasping mechanism 9 is used to cooperate with the protrusion 14 to grasp the container 3 with holes at the bottom and reciprocate between the opaque container 7 and the cleaning tank 12 .

In this embodiment, the photocatalytic color stripping solution 8 uses nano-powder as the photocatalyst, and its pH value can be adjusted by preparing the prefabricated nano-powder into a dispersed aqueous solution with a certain mass concentration.

In this embodiment, both the first rotating mechanism 1 and the second rotating mechanism 6 can realize two-way rotation, and the first rotating mechanism 1 and the second rotating mechanism 6 can be driven by a rotating motor.

In order to apply the bulk fiber photocatalytic stripping method in the embodiment of the present invention to the above-mentioned bulk fiber photocatalytic stripping device, the method includes the following steps:

Loose fibers are placed in a container with a hole in the bottom and immersed in a photocatalytic stripping solution;

The first rotating mechanism drives the reaction lamp to rotate, and the second rotating mechanism drives the oxygen increasing device to rotate to strip the loose fiber.

The method also includes the steps of:

The container with a mesh at the bottom is grabbed by the grabbing mechanism, and the reciprocating motion between the opaque container and the cleaning tank is carried out for multiple times of stripping and cleaning the loose fibers.

Beneficial effects of the present invention:

1. The equipment is simple and easy to operate. Due to the use of photocatalytic stripping technology, there is no need to use traditional oxidants or reducing agents, as well as a large amount of acid and alkali. It is applicable to a wide range of pH values and can achieve stripping of fabrics under normal temperature and pressure. Color treatment, so it has the advantages of ecological environmental protection, energy saving and emission reduction;

2. The first rotating mechanism drives the reaction lamp to rotate, and the second rotating mechanism drives the oxygen increasing device to rotate, which can make the loose fiber stripping more uniform and reduce the difficulty of bulk fiber photocatalytic stripping;

3. By setting the grasping mechanism and cleaning tank, the loose fiber can be stripped and cleaned multiple times.

The above embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or transformations made by those skilled in the art on the basis of the present invention are all within the protection scope of the present invention. The protection scope of the present invention shall be determined by the claims.

Claims (8)

1. A bulk fiber photocatalytic stripping device, characterized in that it comprises: an opaque container and a first rotating mechanism, a photocatalytic stripping solution is provided in the opaque container, and a bottom band hole is also provided in the opaque container a container, a support and a second rotating mechanism, the second rotating mechanism is arranged under the container with a hole at the bottom, the second rotating mechanism is provided with an oxygen increasing device, and the top of the opaque container is provided with a first opening, The bottom perforated container can enter the opaque container from the first opening, the support is used to support the bottom perforated container, the top of the bottom perforated container is provided with a second opening, the first A reaction lamp is provided on the rotating mechanism, and the reaction lamp can enter the container with a hole at the bottom through the second opening; It also includes a cleaning tank, the cleaning liquid is arranged in the cleaning tank, and the reaction lamp is a low-pressure ultraviolet mercury lamp. 2. loose fiber photocatalytic stripping device as claimed in claim 1, is characterized in that, also comprises linear module, and described linear module is provided with grasping mechanism, and described grasping mechanism is used for grasping described A container with a hole in the bottom and reciprocating movement between the opaque container and the cleaning tank. 3. The bulk fiber photocatalytic decolorization device according to claim 2, characterized in that, the grasping mechanism is a manipulator. 4 . The photocatalytic stripping device for loose fibers according to claim 2 , wherein a protrusion cooperating with the gripping mechanism is provided on the container with a hole at the bottom. 5 . 5 . The photocatalytic stripping device for loose fibers according to claim 1 , wherein a water inlet pipe and an outlet pipe are connected to the cleaning tank. 6 . 6. The bulk fiber photocatalytic decolorization device according to claim 1, wherein the photocatalytic decolorization solution uses nano powder as a photocatalyst. 7. The loose fiber photocatalytic stripping device as claimed in claim 1, wherein the quantity of the reaction lamps is three, wherein one reaction lamp is arranged on the rotation axis of the first rotating mechanism, and the other two reaction lamps are three. The lamps are arranged symmetrically on both sides of the rotation axis of the first rotation mechanism. 8. A bulk fiber photocatalytic stripping method, applied to the bulk fiber photocatalytic stripping device as claimed in any one of claims 1-7, characterized in that, comprising the following steps: Loose fibers are placed in the container with a hole in the bottom and immersed in the photocatalytic stripping solution; The first rotating mechanism drives the reaction lamp to rotate, and the second rotating mechanism drives the oxygen increasing device to rotate to strip the loose fiber.

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