Wool fabric waterless dyeing device and dyeing method thereof

Abstract

The invention discloses a wool fabric waterless dyeing device and a dyeing method thereof in the technical field of fabric processing, the wool fabric waterless dyeing device comprises a reaction kettle main body, a support is arranged on the reaction kettle main body, a hoisting piece, a plurality of outer dyeing columns and a plurality of inner dyeing columns are arranged on the support, and the outer dyeing columns and the inner dyeing columns are arranged on the hoisting piece. The inner dyeing columns are located on the inner sides of the outer dyeing columns, and second through holes used for being communicated with the inner dyeing columns and first through holes used for being communicated with the outer dyeing columns are formed in the support; a fixing piece for fixing the outer dyeing column is arranged on the bracket; the outer dyeing column can move in the axial direction (such as downward) by relieving the fixed limitation on the outer dyeing column, so that the operation space for the inner dyeing column is directly reserved, an operator can directly and conveniently get close to the inner dyeing column without shuttling back and forth in a narrow fixed column gap with great effort or detaching the outer dyeing column in advance, and the operation efficiency is greatly improved. The wool fabric is loaded or unloaded, so that the manual working efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of fabric processing, and specifically to an anhydrous dyeing apparatus and dyeing method for wool fabrics. Background Technology

[0002] Supercritical carbon dioxide anhydrous dyeing technology, as a revolutionary green dyeing process, has shown great application potential in the field of wool fabric processing. This technology uses supercritical CO2 as the dyeing medium, replacing the traditional water dyeing process, completely avoiding wastewater discharge, and has outstanding advantages such as water saving, energy saving, environmental protection, and excellent dyeing product quality.

[0003] Existing supercritical carbon dioxide anhydrous dyeing equipment typically includes a high-pressure reactor, a circulation system, a separation system, and a dyeing assembly placed inside the reactor. Among these, the dyeing assembly is the core component that carries the fabric, and its design directly affects dyeing uniformity, production efficiency, and ease of operation. To increase single-batch capacity, a common industrial design involves arranging multiple independent tubular dyeing columns parallel to each other along the axial direction inside a cylindrical reactor. These dyeing columns have through holes evenly distributed on their walls, allowing supercritical CO2-dyed fluid to penetrate the through holes and dye the fabrics rolled or stacked around the outer periphery of the columns. However, the dyeing columns are usually fixedly installed on a support frame inside the reactor. When it is necessary to load or unload wool fabrics onto the inner dyeing columns, the operating space is extremely limited, requiring the operator to pass through the narrow gaps between the outer dyeing columns. This process is not only extremely inconvenient to operate, but also time-consuming, labor-intensive, and inefficient. Summary of the Invention

[0004] The purpose of this invention is to provide a waterless dyeing apparatus and dyeing method for wool fabrics, which solves the problems existing in the actual production of the existing structure with multiple dyeing columns arranged side by side.

[0005] The present invention achieves the above-mentioned objective through the following technical solution: a waterless dyeing device for wool fabrics, comprising: a reaction vessel body, a support provided on the reaction vessel body, a lifting device, an outer dyeing column and an inner dyeing column provided on the support, a plurality of outer dyeing columns and an inner dyeing column, the plurality of inner dyeing columns being located inside the plurality of outer dyeing columns, the support being provided with a second through hole for communicating with the inner dyeing column and a first through hole for communicating with the outer dyeing column; The bracket is equipped with a fixing member for fixing the outer dyeing column. The fixing member releases the restriction on the outer dyeing column, so that the outer dyeing column can move downward through the first through hole and expose the inner dyeing column.

[0006] Preferably, the fastener includes a kit mounted on the bracket and a positioning element mounted on the kit for fixing the outer dyeing column, the outer dyeing column being inserted into the kit.

[0007] Preferably, the bracket is provided with an annular groove, and an annular block is provided in the annular groove, with the second through hole provided on the annular block.

[0008] Preferably, the annular block includes several mounting blocks and a movable block disposed between adjacent mounting blocks. Both ends of the mounting blocks are provided with storage grooves, and the movable block is slidably inserted into the storage groove. Several second through holes correspond one-to-one with several mounting blocks.

[0009] Preferably, the inner wall of the second through hole is provided with a through groove for communicating with the storage groove.

[0010] Preferably, several of the external staining columns are provided with connectors, and the connectors are provided with buffers.

[0011] Preferably, the buffer is hinged to the connector via a torsion spring shaft, and the reactor body is provided with a support for supporting the buffer.

[0012] Preferably, a method for anhydrous dyeing of wool fabrics, utilizing the aforementioned anhydrous dyeing apparatus for wool fabrics, includes the following steps: S1: Open the main body of the reactor and use the lifting device to move the support, outer dyeing column and inner dyeing column to the outside of the main body of the reactor; S2: Release the restriction of the fixing component on the outer dyeing column, allowing the outer dyeing column to move downward through the first through hole, exposing the inner dyeing column. After installing part of the wool fabric onto the inner dyeing column, drive the outer dyeing column to reset, install the remaining wool fabric onto the outer dyeing column, move the bracket back into the interior of the reactor body, and close the reactor body. S3: Supercritical CO fluid carrying dye enters from the inlet of the reactor body and dyes wool fabrics through the outer and inner dyeing columns.

[0013] The beneficial effects of this invention are as follows: by removing the fixed restrictions on the outer dyeing column, it can be moved axially (e.g., downwards), thereby directly freeing up the operating space for the inner dyeing column. Operators no longer need to laboriously shuttle between narrow fixed column gaps, nor do they need to disassemble the outer dyeing column first. They can directly and conveniently approach the inner dyeing column to load or unload wool fabrics, which improves manual work efficiency. More importantly, it reduces the waiting idle time of the high-pressure reactor, thereby improving the overall operating efficiency and production capacity of the equipment. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of the waterless dyeing apparatus for wool fabrics of the present invention. Figure 2 This is a schematic diagram of the main structure of the reaction vessel of the present invention; Figure 3This is a schematic diagram of the connection structure between the support and the outer dyeing column of the present invention; Figure 4 For the present invention Figure 3 Enlarged schematic diagram of the structure at point A in the middle; Figure 5 This is a schematic diagram of the connection structure between the fixing member and the outer dyeing column of the present invention; Figure 6 This is a schematic diagram of the connection structure between the bracket and the annular block of the present invention; Figure 7 This is a schematic diagram of the connection structure between the mounting block and the movable block of the present invention.

[0015] In the diagram: 1. Reactor body; 2. Support frame; 3. Outer dyeing column; 4. Lifting component; 5. Fixing component; 6. Connecting component; 7. Buffer component; 8. Support component; 9. Torsion spring shaft; 10. First through hole; 11. Annular groove; 12. Annular block; 121. Mounting block; 122. Movable block; 123. Storage groove; 124. Through groove; 13. Second through hole; 14. Inner dyeing column. Detailed Implementation

[0016] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0017] Example 1 Please see Figure 1 , Figure 2 , Figure 3 and Figure 5 A waterless dyeing device for wool fabrics includes: a reaction vessel body 1, with a support 2 inside the reaction vessel body 1 (a support block is installed inside the reaction vessel body 1 to support the support 2), and a lifting component 4 (such as a lifting lug), an outer dyeing column 3 and an inner dyeing column 14 (both the outer dyeing column 3 and the inner dyeing column 14 are made of sintered metal porous filter material) on the top wall of the support 2. There are several outer dyeing columns 3 and several inner dyeing columns 14, which are arranged in a ring. The several inner dyeing columns 14 are located inside the several outer dyeing columns 3. A second through hole 13 and a first through hole 10 are opened through the bottom wall of the support 2. The second through hole 13 is connected to the second through hole 14 inside the inner dyeing column 14, and the first through hole 10 is connected to the inner dyeing column 3. A fixing component 5 is provided on the support 2 to fix the outer dyeing column 3.

[0018] A method for anhydrous dyeing of wool fabrics includes the following steps: First: Open the cover of the reactor body 1, connect the lifting hook of the hoisting equipment to the hoisting component 4, and move the bracket 2, the outer dyeing column 3 and the inner dyeing column 14 to the outside of the reactor body 1 using the hoisting equipment; Second: Release the restriction of the fixing piece 5 on the outer dyeing column 3, so that the outer dyeing column 3 can move downward through the first through hole 10, exposing the inner dyeing column 14. Then, after installing part of the wool fabric on the inner dyeing column 14, drive the outer dyeing column 3 to reset and fix it through the fixing piece 5. Install the remaining wool fabric on the outer dyeing column 3. Then, use the hoisting equipment to move the bracket 2 back into the interior of the reactor body 1 and close the reactor body 1. Third: Supercritical CO2 fluid carrying dye enters from the air inlet of the reactor body 1 and dyes the wool fabric through the outer dyeing column 3 and the inner dyeing column 14 (the supercritical CO2 fluid flows through the dye chamber, efficiently dissolving and dispersing the dye particles to form a "dye-CO2" solution. This solution is forced to penetrate the wool fibers under the drive of the circulation pump. Due to the extremely low viscosity and strong diffusivity of CO2, it can quickly enter the scale layer and internal hydrophobic region of the wool. The dye molecules are adsorbed by the fibers. The CO2 fluid circulates continuously in the reactor to ensure uniform dye concentration until the dye reaches a distribution equilibrium between the fiber and the fluid phase, achieving uniform dyeing. The above process belongs to the prior art and will not be described in detail here). Fourth: After dyeing is completed (after dyeing, the fabric is rinsed by reducing the pressure or using pure supercritical CO2 to remove floating dye. The dyeing waste liquid (i.e. CO2 containing residual dye) enters the separation vessel through the pressure reducing valve. After the pressure is reduced, the solubility of CO2 for dye decreases sharply, and dye powder will precipitate and deposit at the bottom of the separation vessel. The gaseous CO2 is condensed and liquefied and returned to the storage tank for recycling. The above process is existing technology and will not be described in detail here), slowly release the pressure in the reactor body 1 to atmospheric pressure, and open the reactor body 1. Use the hoisting equipment to move the support 2, the outer dyeing column 3 and the inner dyeing column 14 to the outside of the reactor body 1. First, remove the wool fabric on the outer dyeing column 3, then move the outer dyeing column 3 to expose the inner dyeing column 14, and then remove the wool fabric on the inner dyeing column 14.

[0019] It should be noted that by moving the outer dyeing column 3, it is possible to avoid affecting the installation or removal of the inner dyeing column 14 for wool fabric.

[0020] In this embodiment, as a further optimization, please refer to... Figure 1 , Figure 3 and Figure 5The fastener 5 includes a kit and a positioning element (such as a bolt) on the side wall of the kit; the kit is located on the top wall of the bracket 2, and the end of the outer dyeing column 3 is inserted into the inner cavity of the kit. The positioning element is used to fix the outer dyeing column 3; the positioning element is turned so that it does not contact the outer dyeing column 3, thereby releasing the restriction of the positioning element on the outer dyeing column 3, allowing it to move downward under the action of gravity.

[0021] In this embodiment, as a further optimization, please refer to... Figure 1 , Figure 2 and Figure 4 A number of outer dyeing columns 3 are provided with connecting members 6. The connecting members 6 are ring-shaped and are connected together with the outer dyeing columns 3. The connecting members 6 are provided with buffer members 7. The buffer members 7 include a support block, a slot on the support block, a movable block that slides into the slot, and a buffer spring between the movable block and the support block. During the downward movement of the outer dyeing columns 3, the buffer members 7 contact the top wall of the support 2, which plays a buffering role (the movable block moves into the slot, compressing the buffer spring), reducing the collision force generated by the downward movement of the outer dyeing columns 3. The buffer members 7 can also prevent the outer dyeing columns 3 from completely passing through the first through hole 10. Furthermore, the connecting members 6 are fixedly connected to all the outer dyeing columns 3, so that when the connecting members 6 move, all the outer dyeing columns 3 can be pulled up at the same time, making it easy to reset the outer dyeing columns 3.

[0022] It should be noted that, in order to facilitate the removal of the restriction of the fixing part 5 on the outer dyeing column 3, the number of positioning parts can be reduced, and it is not necessary to install a positioning part on each kit; two positioning parts can be used, and the two positioning parts are set on two symmetrical positioning parts (at this time, the side wall of the outer dyeing column 3 is provided with a groove, and the end of the positioning part will be inserted into the groove to increase the stability of the fixation).

[0023] In this embodiment, as a further optimization, please refer to... Figure 3 and Figure 4 The buffer 7 is hinged to the connector 6 via a torsion spring shaft 9. A support 8 is provided on the inner wall of the reactor body 1. The support 8 is annular, and its top wall fits against the buffer 7 to support it. When the buffer 7 is in a horizontal state, the upper part of the support block away from the moving block fits against the side wall of the connector 6, ensuring that the buffer 7 will not continue to rotate upward when it rotates to a horizontal position. This allows the support 8 to apply a supporting force to the buffer 7, ensuring that the bracket 2, the outer dyeing column 3, and the inner dyeing column 14 will not tilt when installed inside the reactor body 1. When the bracket 2 is removed from inside the reactor body 1, the buffer 7 and the support 8 are no longer in contact. Under the action of the torsion spring shaft 9, the buffer 7 rotates downward to provide cushioning protection.

[0024] Example 2 As a further optimization of Example 1, please refer to Figure 5 and Figure 6 An annular groove 11 is provided on the top wall of the bracket 2, and an annular block 12 is slidably provided in the inner cavity of the annular groove 11. A second through hole 13 is provided on the annular block 12. The position of the inner dyeing column 14 is changed by the movement of the annular block 12 in the inner cavity of the annular groove 11, so as to facilitate the installation of wool fabric onto the inner dyeing column 14.

[0025] In this embodiment, as a further optimization, please refer to... Figure 6 The annular block 12 includes several mounting blocks 121 and movable blocks 122 disposed between adjacent mounting blocks 121. Both ends of the mounting blocks 121 are provided with storage grooves 123. The movable blocks 122 are slidably inserted into the storage grooves 123. Several second through holes 13 correspond one-to-one with several mounting blocks 121. By sliding the movable blocks 122 in the inner cavity of the storage grooves 123, the spacing between adjacent mounting blocks 121 can be adjusted according to requirements. When installing wool fabric, by increasing the spacing between adjacent mounting blocks 121, the spacing between adjacent inner dyeing columns 14 is increased, thereby making it easier for wool fabric to be installed on the corresponding inner dyeing column 14.

[0026] In this embodiment, as a further optimization, please refer to... Figure 7 A through groove 124 is provided on the inner wall of the second through hole 13. The through groove 124 is used to connect the second through hole 13 with the receiving groove 123. When CO2 fluid passes through the second through hole 13, it will apply pressure to the movable block 122 through the through groove 124 and the receiving groove 123 to ensure that the spacing between each mounting block 121 is consistent.

[0027] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A device for the anhydrous dyeing of wool fabrics, characterized in that, include: The reactor body (1) is provided with a support (2), and the support (2) is provided with a hoisting component (4), an outer dyeing column (3) and an inner dyeing column (14). There are several outer dyeing columns (3) and several inner dyeing columns (14). Several inner dyeing columns (14) are located inside several outer dyeing columns (3). The support (2) is provided with a second through hole (13) for communicating with the inner dyeing column (14) and a first through hole (10) for communicating with the outer dyeing column (3). The bracket (2) is provided with a fixing member (5) for fixing the outer dyeing column (3). The fixing member (5) releases the restriction on the outer dyeing column (3) so that the outer dyeing column (3) moves downward through the first through hole (10) and exposes the inner dyeing column (14).

2. A device for the non-aqueous dyeing of wool fabric according to claim 1, characterised in that, The fastener (5) includes a kit on the bracket (2) and a positioning element on the kit for fixing the outer dyeing column (3), which is inserted into the kit.

3. A device for the non-aqueous dyeing of wool fabric according to claim 1, characterised in that, The bracket (2) is provided with an annular groove (11), and an annular block (12) is provided in the annular groove (11). The second through hole (13) is provided on the annular block (12).

4. A device for the non-aqueous dyeing of wool fabric according to claim 3, characterised in that, The annular block (12) includes several mounting blocks (121) and a movable block (122) disposed between adjacent mounting blocks (121). Both ends of the mounting block (121) are provided with a storage groove (123). The movable block (122) is slidably inserted into the storage groove (123). Several second through holes (13) correspond one-to-one with several mounting blocks (121).

5. A device for the non-aqueous dyeing of wool fabric according to claim 4, characterised in that, The inner wall of the second through hole (13) is provided with a through groove (124) for communicating with the storage groove (123).

6. A device for the non-aqueous dyeing of wool fabric according to claim 1, characterised in that, A number of the external staining columns (3) are provided with connectors (6), and the connectors (6) are provided with buffers (7).

7. A device for the non-aqueous dyeing of wool fabric according to claim 6, characterised in that, The buffer (7) is hinged to the connector (6) via a torsion spring shaft (9), and the reactor body (1) is provided with a support (8) for supporting the buffer (7).

8. A method for non-aqueous dyeing of wool fabric using a non-aqueous dyeing apparatus for wool fabric according to any one of claims 1 to 7, characterized in that, Includes the following steps: S1: Open the reactor body (1), and use the hoisting device (4) to move the support (2), the outer dyeing column (3) and the inner dyeing column (14) to the outside of the reactor body (1); S2: Release the fastener (5) from the restriction of the outer dyeing column (3), so that the outer dyeing column (3) moves downward through the first through hole (10) and exposes the inner dyeing column (14). After installing part of the wool fabric on the inner dyeing column (14), drive the outer dyeing column (3) to reset, install the remaining wool fabric on the outer dyeing column (3), move the bracket (2) back into the reactor body (1), and close the reactor body (1). S3: Supercritical CO2 fluid carrying dye enters from the inlet of the reactor body (1) and dyes the wool fabric through the outer dyeing column (3) and the inner dyeing column (14).

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