A capillary supercritical carbon dioxide dyeing reactor beam structure

Abstract

The application discloses a capillary supercritical carbon dioxide dyeing reactor beam structure and belongs to the field of beam dyeing. The core technology of the method is to longitudinally and transversely interlace micro-groove channels on the surface of the dyeing reactor beam. The dyed fabric is wound on the beam. The dyeing liquid flows into the micro-groove channels under the action of capillary force through the distribution sieve holes. The axial and ring grooves are connected, so that the surface of the beam is filled with the dyeing liquid. Then, under the concentration difference, the dyeing liquid gradually diffuses to the fabric fiber layer through penetration, and the mass transfer is completed. Through adsorption, the fabric fiber layer is uniformly dyed. Compared with the traditional beam structure with only holes, the application processes multi-channel grooves, fundamentally solves the problems of color difference and uneven dyeing of supercritical carbon dioxide dyeing, and thus high-quality dyeing is realized.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of warp dyeing, and is a capillary supercritical carbon dioxide dyeing reactor warp beam structure. BACKGROUND

[0002] As a dynamic dyeing process, the principle of warp dyeing is to set a hollow shaft in the dyeing kettle, the shaft is covered with a plurality of holes, and a plurality of layers of fiber fabric are wound outside the shaft. Through the pressurized pump, the circulating dyeing liquid is forced to pass through the fabric on the perforated shaft to achieve dynamic dyeing. The advantage of this structure is that the dyeing kettle has a small volume and a simple structure, and there are no moving parts, so it can be used for dyeing yarns and fabrics, and is particularly suitable for dyeing processes in high temperature and high pressure environments. At the same time, the warp beam structure of the dyeing device has its inherent limitations, mainly manifested in that as the fabric increases, the radius of the fabric to be dyed becomes larger, the resistance of the dyeing liquid passing through the fabric roll also becomes larger, thereby the dyeing speed becomes slower, and the dyeing of the inner and outer layers of the fabric is easily uneven.

[0003] At present, warp dyeing is mostly carried out in vertical and horizontal dyeing kettles. Patent No. CN 105177895A proposes a warp yarn dyeing device, which uses a horizontal warp dyeing kettle, and adds a baffle and a filter screen to improve the dyeing effect and quality of the yarn, and the structure is simple and easy to realize. Patent No. CN201821160619.9 proposes a supercritical CO2 dyeing device, which uses a vertical warp dyeing kettle, and cooperates with bearings and a rotating seat around the dyeing warp beam to enhance the stability of power transmission of the dyeing kettle and comprehensively improve the supercritical carbon dioxide dyeing effect. However, none of them solves the problem of uneven dyeing of warp dyeing. Usually, the form of the holes on the surface of the warp beam is changed, for example, the diameter of the holes is increased and the number of the holes is increased. Although this can increase the area of the dyeing liquid contacting the fiber fabric, too large diameter and too dense number of the holes will reduce the rigidity of the dyeing shaft and increase the thickness of the warp beam, which will waste materials and space. Although the form of the holes is changed, the uniformity of the dyeing is still not ideal. Therefore, it is of great significance to solve the unevenness of dyeing in the field of warp dyeing. SUMMARY

[0004] In view of the above problems, the present application provides a capillary supercritical carbon dioxide dyeing reactor warp beam structure. The surface of the warp beam is covered with grooves. Under the action of capillary force, the dyeing liquid enters the grooves and penetrates and adsorbs into the fiber fabric to dye it. The surface of the warp beam is covered with dyeing liquid, which can greatly improve the uniformity of dyeing.

[0005] The technical scheme of the present application is as follows:

[0006] A capillary supercritical carbon dioxide dyeing reactor with a warp shaft structure is disclosed. The warp shaft structure comprises grooves 5 and sieve holes 6 on a warp shaft 4. The warp shaft 4 is hollow, with one end connected to the dye liquor inlet and the other end closed. The sieve holes 6 are radial through holes on the warp shaft 4. The grooves 5 include axial grooves 5-1 and circumferential grooves 5-2 respectively disposed on the outer surface of the warp shaft 4 in the axial and circumferential directions. The axial grooves 5-1 and circumferential grooves 5-2 form a warp and weft grid on the outer surface of the warp shaft 4. The sieve holes 6 are located at the intersection of the axial grooves 5-1 and the circumferential grooves 5-2.

[0007] Furthermore, for warp shafts 4 of different diameters, the circumferential sieve holes 6 divide the circumference of the warp shaft 4 into 4-8 equal parts, and the axial sieve holes 6 are evenly distributed along the axial direction of the warp shaft 4. The distance between adjacent sieve holes 6 is 1 / 12-1 / 8 of the length of the warp shaft 4. The axial grooves 5-1 divide the circumference of the warp shaft 4 into 8-16 equal parts, ensuring that 1-2 axial grooves 5-1 are distributed between adjacent circumferential sieve holes 6. The distance between adjacent annular grooves 5-2 is 1 / 24-1 / 16 of the length of the warp shaft 4, ensuring that 1-2 annular grooves 5-2 are distributed between adjacent axial sieve holes 6. The depth H of the groove 5 is 1 / 15-1 / 10 of the diameter of the sieve hole 6, the width W of the groove 5 is 1 / 15-1 / 10 of the diameter of the sieve hole 6, and the aperture of the sieve hole 6 is 1 / 10-1 / 5 of the shaft diameter of the warp shaft 4.

[0008] Furthermore, baffles 3 are provided at both ends of the warp beam 4. The baffles 3 are used to position the fiber fabric 8 in front and behind, ensuring the tightness of each position of the fiber fabric 8. At the same time, a support ring is provided between the baffles 3 and the inner wall of the dyeing kettle cylinder 9, so that the warp beam 4 wrapped with the fiber fabric 8 can be easily installed and disassembled, ensuring that the dye liquor in the kettle circulates during the dyeing process, and providing support for the warp beam 4.

[0009] Furthermore, the left end of the cylinder 9 is connected to the flange of the end cap 2, and the end cap 2 is provided with a dye inlet 1; the top middle of the cylinder 9 is provided with a dye outlet 7, and the cylinder 9 is connected to the right end cap 11 by a clamp 10.

[0010] The advantages of this invention are as follows: By adding grooves to the existing sieve holes on the warp beam, the dye liquor, under capillary force, first enters the grooves, thus covering the surface of the warp beam with dye liquor. This allows the dye liquor to fully penetrate the fiber fabric for dyeing. Compared to traditional methods, this invention, with its multi-channel grooves, fundamentally solves the problems of color difference and uneven dyeing in supercritical carbon dioxide dyeing, thereby achieving high-quality dyeing. Attached Figure Description

[0011] Figure 1 This is a diagram of the warp beam structure of the present invention;

[0012] Figure 2 This is a cross-sectional view of the sieve holes and axial grooves;

[0013] Figure 3 is the screen hole and the groove top view;

[0014] In the figure: 1, dye inlet; 2, end cap; 3, baffle; 4, beam; 5-1, axial groove; 5-2, ring groove; 6, screen hole; 7, dye outlet; 8, fiber fabric; 9, cylinder; 10, clamp; 11, right end cover. DETAILED DESCRIPTION

[0015] The beam structure of the present application is described in detail below in combination with the drawings:

[0016] The present application adopts mm hollow beam 4, evenly set screen hole 6 with aperture Φ=40 mm on the surface of the beam 4, 10 axial holes 10 on the beam 4, 4 ring holes on the beam 4, at the same time, process axial grooves 5-1 along the axial line of the beam 4, process 8 axial grooves 5-1 on the surface of the beam 4, of which 4 are connected with the axial screen hole 6, process ring grooves 5-2 along the ring direction of the beam, process 19 axial grooves 5-1 on the surface of the beam 4, of which 10 are connected with the ring screen hole 6, ensure that there is one axial groove 5-1 between each adjacent ring screen hole 6, and there is one ring groove 5-2 between each adjacent axial screen hole 6, so that each groove is closely connected and evenly covers the entire beam 4, of which the groove width W=4 mm and the groove depth H=4 mm. The front end of the cylinder 9 is connected with the flange of the end cap 2, and the dye inlet 1 is arranged on the end cap 2; the dye outlet 7 is arranged on the top of the cylinder 9, and the cylinder 9 is connected with the right end cover 11 through the clamp 10.

[0017] Before dyeing, first, the fiber fabric 8 is wound on the beam 4, due to the effect of the baffle 3, the fiber fabric 8 can be fixedly wound, which can ensure the tightness of the fabric, then the beam 4 is pushed into the dyeing kettle, a supporting ring is arranged between the baffle 3 and the inner wall of the cylinder 9 of the dyeing kettle, which can support the beam 4 and the fiber fabric 8, and at the same time ensure the circulation of the dye inside the kettle, finally, the right end cover 11 is fixed by the clamp 10, and the preparation for dyeing is completed.

[0018] During the dyeing process, the dye first enters the inside of the beam 4, the axial grooves 5-1 and the ring grooves 5-2 of the groove 5 play the role of capillary tubes, when the dye passes through the screen hole 6, due to the resistance of the fiber fabric 8, the dye will enter the axial grooves 5-1 and the ring grooves 5-2 under the action of capillary force, and continuously advance along the inner wall of the groove 5, so that the dye fills all the grooves 5 on the beam 4, after the dye fills the surface of the beam 4, it gradually diffuses and adsorbs to the fiber layer of the fiber fabric 8 through penetration, thereby realizing dyeing. Since the surface of the beam is filled with dye, the opportunity for the dye to enter the fiber fabric 8 is more uniform, the diffusion of the dye is more uniform, and therefore the dyeing is more uniform, which can better reduce the color difference.

[0019] At the end of the dyeing, the right end cap 11 is opened and the beam 4 is removed together with the fibre fabric 8.

Claims

1. A capillary supercritical carbon dioxide dyeing reactor beam structure, characterized by, The supercritical carbon dioxide dyeing reactor beam structure is provided with a groove (5) and a sieve hole (6) on a beam (4), the beam (4) is a hollow beam, one end is communicated with a dye liquor inlet, and the other end is closed; the sieve hole (6) is a radial through hole on the beam (4); the groove (5) comprises an axial groove (5-1) and a ring groove (5-2) arranged on the outer surface of the beam (4) in the axial and ring directions respectively, the axial groove (5-1) and the ring groove (5-2) form a warp and weft net on the outer surface of the beam (4), and the sieve hole (6) is located at the intersection of the axial groove (5-1) and the ring groove (5-2).

2. A spool structure for a capillary supercritical carbon dioxide dyeing reactor according to claim 1, characterized in that, For beams (4) of different diameters, the beam ring sieve hole (6) equally divides the circumference of the beam (4) by 4-8, the axial sieve hole (6) is uniformly distributed on the beam (4) in the axial direction, the distance between adjacent sieve holes (6) is 1 / 12-1 / 8 of the length of the beam (4), the beam axial groove (5-1) equally divides the circumference of the beam (4) by 8-16, and 1-2 axial grooves (5-1) are distributed between adjacent ring sieve holes (6), the distance between adjacent ring grooves (5-2) is 1 / 24-1 / 16 of the length of the beam (4), 1-2 ring grooves (5-2) are distributed between adjacent axial sieve holes (6), the depth H of the groove (5) is 1 / 15-1 / 10 of the diameter of the sieve hole (6), the width W of the groove (5) is 1 / 15-1 / 10 of the diameter of the sieve hole (6), and the aperture of the sieve hole (6) is 1 / 10-1 / 5 of the shaft diameter of the beam (4).

3. A spool structure for a capillary supercritical carbon dioxide dyeing reactor according to claim 1, characterized in that, The beam (4) is provided with a baffle (3) at both ends, the baffle (3) is used for positioning the fiber fabric (8) front and back, ensuring the tightness of each position of the fiber fabric (8), meanwhile, a supporting ring is arranged between the baffle (3) and the inner wall of the dyeing kettle cylinder (9), so that the beam (4) wound with the fiber fabric (8) is convenient to install and disassemble, the dye liquor in the kettle is circulated and flows during the dyeing process, and the beam (4) is supported.

4. A spool structure for a capillary supercritical carbon dioxide dyeing reactor according to claim 3, characterized in that, The left end of the cylinder (9) is connected with the flange of the head (2), the dye liquor inlet (1) is arranged on the head (2); the dye liquor outlet (7) is arranged at the top of the cylinder (9), and the cylinder (9) is connected with the right end cover (11) through the clamp (10).

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