A method for dyeing polyester yarn based on disperse dyes
By using negative pressure tanks, magnetic rollers and superconducting dyeing cylinders in polyester yarn dyeing, and using pressurization and heating technology, the dye is quickly soaked and attached to the yarn, solving the problem of water pollution in traditional dyeing processes and achieving efficient and environmentally friendly dyeing effects.
Patent Information
- Application Number
- CN202310236097.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-03-13
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2043-03-13
AI Technical Summary
The use of water as a medium in traditional dyeing processes causes the wastewater to contain heavy metals and difficult-to-decompose organic dyeing additives, causing water pollution and affecting the environment.
The polyester yarn dyeing technology based on dispersed dyes is adopted, and devices such as negative pressure tanks, magnetic rollers and superconducting dyeing cylinders are used to quickly soak the dye and adhere to the yarn by pressurization and heating to achieve dyeing of anhydrous medium.
It effectively reduces water pollution, reduces the viscous force of dyes, improves dyeing efficiency, and realizes an environmentally friendly dyeing process.
Smart Images
Figure CN116590863B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of sewing thread dyeing, in particular to polyester yarn dyeing based on disperse dyes. Background Art
[0002] In today's society that pursues environmental protection, the industry hopes to reduce waste in production and processing, use renewable materials or energy as much as possible, and strengthen the treatment of post-production waste for recycling and reuse. The traditional dyeing process uses water as the medium. The wastewater generated after the dyeing process contains heavy metals and organic dyeing auxiliaries that are difficult to decompose. The water pollution caused by the wastewater containing the above chemical substances puts great pressure on the restoration of the natural and ecological environment. Summary of the invention
[0003] The technical problem to be solved by the present invention is: in order to overcome the above problems, a polyester yarn dyeing based on disperse dyes is provided, which solves the above problems.
[0004] The present invention solves the technical problem by adopting the following technical solutions:
[0005] A disperse dye-based polyester yarn dyeing method includes a negative pressure tank whose end is closed by a flange end cover fixed by bolts, a magnetic roller is arranged in the negative pressure tank, and a superconducting dyeing cylinder mounted on the magnetic roller, the superconducting dyeing cylinder includes a ceramic end head fixed at both ends and an aluminum alloy tube rotatably arranged between the ceramic end heads, a plurality of penetrating sieve holes are arranged at intervals on the aluminum alloy tube, a nozzle is arranged in the aluminum alloy tube at both ends fixed on the ceramic end head, the superconducting dyeing cylinder also includes a feeding neck tube fixed on one side of the ceramic end head and connected to the aluminum alloy tube, the other end of the feeding neck tube is connected to a dye storage box, a cavity for storing dye and a pit pressure plate for sliding left and right to adjust the size of the cavity are arranged in the dye storage box, an inflatable support block for driving the pit pressure plate to move is fixed in the dye storage box, an air supply pipe is connected in series to the inflatable support block, air is pumped into the inflatable support block by an air compressor to control the size of the inflatable support block and thus adjust the position of the pit pressure plate.
[0006] Preferably, an exhaust pipe port is welded and fixed on the upper side of the middle position of the negative pressure tank, and the exhaust pipe port is connected to the inner cavity of the negative pressure tank, and the upper end of the exhaust pipe port is connected to the air compressor. During operation, the air compressor exhausts the negative pressure tank through the exhaust pipe port to accelerate the rapid penetration of the dye.
[0007] Preferably, a front-to-back symmetrical electromagnetic induction heating body is bolted to the inner wall of the negative pressure tank, and a metal thermal induction tube surrounding the ceramic conduit is fixed in the aluminum alloy tube, and the metal thermal induction tube does not block the nozzle.
[0008] Preferably, a gas injection end connected to the inner cavity of the aluminum alloy tube is fixedly embedded at the left end of the ceramic end cap, and the gas injection end cap is aligned with the embedded pressurizing pipe mouth and carbon dioxide gas is delivered into the aluminum alloy tube through the embedded pressurizing pipe mouth via a connecting pipe.
[0009] Preferably, the pit pressure plate is in the shape of a disc and a cylindrical pit consistent with the inner diameter of the feed neck tube is provided in the middle of the disc.
[0010] Preferably, a filling pipe is bolted to the dye storage box, and a one-way air valve for controlling the passage of the feeding neck tube is serially connected in the feeding neck tube.
[0011] Preferably, a working bushing is embedded in the aluminum alloy tube, the working bushing is through and has an opening of not less than sixty degrees on its side wall, and the side wall opening of the working bushing is always facing downward.
[0012] Preferably, an electromagnet is fixedly provided inside the negative pressure tank, and the electromagnet is fixed to the top of the negative pressure tank by bolts and is symmetrically arranged on the left and right. When the electromagnet is energized, it generates a magnetic attraction force on the working bushing so that the outer cylindrical side wall surface of the working bushing is kept in contact with the inner wall of the aluminum alloy tube while keeping the side opening of the working bushing always pointing downward.
[0013] Preferably, sliding rails are symmetrically arranged at intervals on the inner walls at both ends of the aluminum alloy tube, and raised alloy bearing strips are welded and fixed at both ends of the working bushing, and the alloy bearing strips are slidably embedded in the sliding rails.
[0014] The advantages and positive effects of the present invention are as follows: during operation, the air compressor presses air into the inflatable support block to press the dye stored in the dye storage box into the ceramic conduit. At the same time, the electromagnetic induction heating body heats the metal tube sleeve wrapped around the outside of the ceramic conduit and thereby heats the dye. Within 0.5 seconds after the dye is ejected from the ceramic conduit, another air compressor pressurizes the carbon dioxide gas and introduces it into the aluminum alloy tube, so that the air pressure in the aluminum alloy tube increases to more than two standard atmospheric pressures within 0.5 seconds. After the gas injection end is ventilated for 0.5 seconds, another air compressor is used to inhale air through the exhaust pipe port. Then, the air pressure in the negative pressure tank is quickly reduced, so that the dye can reduce the viscosity under the coagulation of carbon dioxide and quickly penetrate and adhere to the yarn, realizing dyeing that does not rely on water as a medium. The pressurization pressure and action time at the gas injection end, the pressure and operation time at the exhaust pipe port, and the interval time between ventilation at the gas injection end and ventilation at the exhaust pipe port can be adjusted by the thickness, coarseness and viscosity of the yarn. When the gas injection end is ventilated after the dye leaves the ceramic conduit, the yarn and the aluminum alloy tube are driven by the magnetic roller to rotate one and a half circles. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The present invention is further described below in conjunction with the accompanying drawings and embodiments.
[0016] Figure 1 It is a schematic diagram of the internal structure of the present invention;
[0017] Figure 2 It is a schematic diagram of the internal structure of the present invention;
[0018] Figure 3 It is a structural schematic diagram of the superconducting dyeing cylinder 14 in the present invention;
[0019] Figure 4 It is a structural schematic diagram of the superconducting dyeing cylinder 14 in the present invention;
[0020] Figure 5 It is a structural schematic diagram of the superconducting dyeing cylinder 14 in the present invention;
[0021] Figure 6 It is a schematic structural diagram of the working bushing 30 in the present invention.
[0022] The marks in the accompanying drawings are described as follows: 10, negative pressure tank; 11, exhaust pipe outlet; 12, magnetic roller; 13, embedded pressurized pipe outlet; 14, superconducting dyeing cylinder; 15, gas injection terminal; 16, yarn; 17, dye storage box; 18, feed neck tube; 19, ceramic terminal; 20, sieve hole; 21, sliding rail; 22, ceramic conduit; 23, nozzle; 25, filling pipe; 26, inflation support block; 27, air supply pipe; 28, pit pressure plate; 29, one-way air valve; 30, working bushing; 31, alloy bearing strip; 33, flange end cover; 34, aluminum alloy tube; 35, electromagnet; 36, electromagnetic induction heating body. DETAILED DESCRIPTION
[0023] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.
[0024] The embodiments of the present invention are further described in detail below with reference to the accompanying drawings:
[0025] like Figure 1-6 As shown, the polyester yarn dyeing based on disperse dyes described in the present invention includes a negative pressure tank 10 whose end is closed by a flange end cover 33 fixed by bolts, a magnetic roller 12 is arranged in the negative pressure tank 10, and also includes a superconducting dyeing cylinder 14 mounted on the magnetic roller 12, the superconducting dyeing cylinder 14 includes a ceramic end 19 fixed at both ends and an aluminum alloy tube 34 rotatably arranged between the ceramic end 19, a plurality of penetrating sieve holes 20 are arranged on the aluminum alloy tube 34 at intervals, a nozzle 23 is arranged in the aluminum alloy tube 34, and the superconducting dyeing cylinder 14 includes a ceramic end 19 fixed at both ends and an aluminum alloy tube 34 rotatably arranged between the ceramic end 19, a plurality of penetrating sieve holes 20 are arranged at intervals, a nozzle 23 is arranged in the aluminum alloy tube 34, and the superconducting dyeing cylinder 14 includes a ceramic end 19 fixed at both ends. The cylinder 14 also includes a feed neck tube 18 fixed on one side of the ceramic end cap 19 and connected to the aluminum alloy tube 34. The other end of the feed neck tube 18 is connected to the dye storage box 17. The dye storage box 17 is provided with a cavity for storing the dye and a recessed pressure plate 28 that slides left and right to adjust the size of the cavity. An inflatable support block 26 that drives the recessed pressure plate 28 to move is fixed in the dye storage box 17. The inflatable support block 26 is connected in series with an air supply pipe 27. Air is pumped into the inflatable support block 26 by an air compressor to control the size of the inflatable support block 26 and then adjust the position of the recessed pressure plate 28.
[0026] Preferably, an exhaust pipe port 11 is welded and fixed on the upper side of the middle position of the negative pressure tank 10, and the exhaust pipe port 11 is connected to the inner cavity of the negative pressure tank 10, and the upper end of the exhaust pipe port 11 is connected to the air compressor. During operation, the air compressor exhausts the negative pressure tank 10 through the exhaust pipe port 11 to accelerate the rapid penetration of the dye.
[0027] Preferably, a front-to-rear symmetrical electromagnetic induction heating body 36 is bolted to the inner wall of the negative pressure tank 10 , and a metal thermal induction tube surrounding the ceramic conduit 22 is fixed in the aluminum alloy tube 34 , and the metal thermal induction tube does not block the nozzle 23 .
[0028] Preferably, a gas injection terminal 15 connected to the inner cavity of the aluminum alloy tube 34 is fixedly embedded at the left end of the ceramic terminal 19, and the gas injection terminal 15 is aligned with the embedded pressurizing pipe mouth 13 and delivers carbon dioxide gas into the aluminum alloy tube 34 through the embedded pressurizing pipe mouth 13 via a connecting pipe.
[0029] Preferably, the concave pressure plate 28 is in the shape of a disc and a cylindrical pit consistent with the inner diameter of the feed neck tube 18 is provided in the middle of the disc.
[0030] Preferably, a filling pipe 25 is bolted to the dye storage box 17 , and a one-way air valve 29 for controlling the passage of the supply neck tube 18 is connected in series in the supply neck tube 18 .
[0031] Preferably, a working bushing 30 is embedded in the aluminum alloy tube 34 , the working bushing 30 is through and has an opening of not less than sixty degrees on its side wall, and the side wall opening of the working bushing 30 is always facing downward.
[0032] Preferably, an electromagnet 35 is fixedly provided inside the negative pressure tank 10. The electromagnet 35 is fixed to the top of the negative pressure tank 10 by bolts and is symmetrically arranged on the left and right. When the electromagnet 35 is energized, it generates a magnetic attraction force on the working bushing 30 so that the outer cylindrical side wall surface of the working bushing 30 is kept in contact with the inner wall of the aluminum alloy tube 34 while keeping the side opening of the working bushing 30 always pointing downward.
[0033] Preferably, sliding rails 21 are symmetrically spaced on the inner walls at both ends of the aluminum alloy tube 34 , and raised alloy bearing strips 31 are welded and fixed on both ends of the working bushing 30 , and the alloy bearing strips 31 are slidably embedded in the sliding rails 21 .
[0034] In specific implementation, during operation, the air compressor presses air into the inflatable support block 26 to press the dye stored in the dye storage box 17 into the ceramic conduit 22. At the same time, the electromagnetic induction heating body 36 heats the metal tube sleeve wrapped outside the ceramic conduit 22 and then heats the dye. Within 0.5 seconds after the dye is ejected from the ceramic conduit 22, another air compressor pressurizes the carbon dioxide gas and introduces it into the aluminum alloy tube 34, so that the air pressure in the aluminum alloy tube 34 increases to more than two standard atmospheres within 0.5 seconds. After the gas injection end 15 is ventilated for 0.5 seconds, another air compressor is used to ventilate through the exhaust pipe port 11. Inhalation rapidly reduces the air pressure in the negative pressure tank 10, so that the dye can reduce the viscosity under the coagulation of carbon dioxide and quickly penetrate and adhere to the yarn 16. The pressurization pressure and action time at the gas injection end 15, the pressure and operation time at the exhaust pipe port 11, and the interval time between the ventilation at the gas injection end 15 and the ventilation at the exhaust pipe port 11 can be adjusted by the thickness, coarseness and viscosity of the yarn 16. When the gas injection end 15 is ventilated after the dye leaves the ceramic conduit 22, the yarn 16 and the aluminum alloy tube 34 are driven by the magnetic roller 12 to rotate one and a half circles.
[0035] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive, and therefore the present invention is not limited to the embodiments described in the specific implementation manners. Any other implementation manners derived by those skilled in the art based on the technical solutions of the present invention also fall within the scope of protection of the present invention.
Claims
1. A polyester yarn dyeing method based on disperse dyes, characterized in that: The invention comprises a negative pressure tank (10) whose end is closed by a flange end cover (33) fixed by bolts, a magnetic roller (12) being arranged in the negative pressure tank (10), and a superconducting dyeing cylinder (14) mounted on the magnetic roller (12), the superconducting dyeing cylinder (14) comprising a ceramic end head (19) fixed at both ends and an aluminum alloy tube (34) rotatably arranged between the ceramic end heads (19), a plurality of sieve holes (20) penetrating the aluminum alloy tube (34) being arranged at intervals, and a nozzle being arranged in the middle of the aluminum alloy tube (34) with both ends fixed on the ceramic end heads (19). The superconducting dyeing cylinder (14) further comprises a feed neck tube (18) fixed to one side of the ceramic end head (19) and connected to the aluminum alloy tube (34); the other end of the feed neck tube (18) is connected to a dye storage box (17); a cavity for storing dye and a recessed pressure plate (28) for sliding left and right to adjust the size of the cavity are provided in the dye storage box (17); an inflatable support block (26) for driving the recessed pressure plate (28) to move is fixed in the dye storage box (17); an air supply pipe (27) is connected to the inflatable support block (26) in series to the outside, and a gas supply pipe (27) is connected to the inflatable support block (26) to the outside. Air is pumped into the inflatable support block (26) through an air compressor to control the size of the inflatable support block (26) and thus adjust the position of the pit pressure plate (28); in addition, an embedded pressurizing pipe port (13) is arranged at the end of the negative pressure tank (10); an exhaust pipe port (11) is welded and fixedly provided on the upper side of the middle position of the negative pressure tank (10); the exhaust pipe port (11) is communicated with the inner cavity of the negative pressure tank (10); the upper end of the exhaust pipe port (11) is connected to the air compressor; the air compressor exhausts air from the negative pressure tank (10) through the exhaust pipe port (11) to accelerate the rapid penetration of the dye; An electromagnetic induction heating body (36) is bolted to the inner wall of the negative pressure tank (10) and is symmetrical in front and back. A metal heat induction tube is fixedly provided in the aluminum alloy tube (34) and surrounds the ceramic conduit (22). The metal heat induction tube does not block the nozzle (23). A gas injection terminal (15) connected to the inner cavity of the aluminum alloy tube (34) is fixedly embedded at the left end of the ceramic terminal (19). The gas injection terminal (15) is aligned with the embedded pressurizing pipe port (13) and carbon dioxide gas is delivered into the aluminum alloy tube (34) through the embedded pressurizing pipe port (13) via a connecting pipe.
2. The method for dyeing polyester yarn based on disperse dyes according to claim 1, characterized in that: The concave pressure plate (28) is in the shape of a disc and has a cylindrical pit in the middle of the disc that is consistent with the inner diameter of the feed neck tube (18).
3. The method for dyeing polyester yarn based on disperse dyes according to claim 2, characterized in that: A filling pipe (25) is bolted to the dye storage box (17), and a one-way air valve (29) is connected in series to the supply neck tube (18) for controlling the passage of the supply neck tube (18).
4. The method for dyeing polyester yarn based on disperse dyes according to claim 3, characterized in that: A working bushing (30) is embedded in the aluminum alloy tube (34); the working bushing (30) is through-through and has an opening of not less than sixty degrees on its side wall; the side wall opening of the working bushing (30) always faces downward.
5. The method for dyeing polyester yarn based on disperse dyes according to claim 4, characterized in that: An electromagnet (35) is fixedly provided inside the negative pressure tank (10). The electromagnet (35) is fixed to the top of the negative pressure tank (10) by bolts and is symmetrically arranged on the left and right sides. When the electromagnet (35) is energized, it generates a magnetic attraction force on the working bushing (30), so that the outer cylindrical side wall surface of the working bushing (30) is kept in contact with the inner wall of the aluminum alloy tube (34) while keeping the side opening of the working bushing (30) always pointing downward.
6. The method for dyeing polyester yarn based on disperse dyes according to claim 5, characterized in that: Sliding rails (21) are symmetrically spaced apart on the inner walls of both ends of the aluminum alloy tube (34), and raised alloy bearing strips (31) are welded and fixedly provided on both ends of the working bushing (30), and the alloy bearing strips (31) are slidably embedded in the sliding rails (21).
Citation Information
Patent Citations
Production system adopting super-critical fluid to conduct continnous dyeing and production technology
CN101024922A
Horizontal dyeing kettle of supercritical CO2 (Carbon Dioxide) anhydrous rotating beam and dyeing system thereof
CN203782399U