A dyeing method for a dyeing machine

Abstract

A dyeing method of a dyeing machine comprises a fabric circulation system and a mixing system; the fabric circulation system comprises a fabric lifting device, a cylinder body and a fabric guide pipe, the cylinder body is connected with the fabric guide pipe, the fabric lifting device is installed at the front of the cylinder body, so that the fabric is circulated and dyed in the cylinder body and the fabric guide pipe; the mixing system comprises a mixing device and a plurality of barrels, and the discharge ends of the plurality of barrels are all connected with the mixing device; the mixed dye liquid pumped out from the cylinder body can flow back into the mixing device and be mixed with the dye and auxiliary agent in the mixing device, thereby improving the uniformity of dyeing and further improving the dyeing quality; the dyeing production process is optimized, the production cost is reduced, and the dyeing time is shortened, thereby improving the production efficiency; in addition, after the fabric dyeing is completed, the fabric circulation system and the mixing system can be cleaned to ensure the dyeing quality of the fabric when it is dyed with other colors next time.

Description

Technical Field

[0001] The invention relates to the technical field of dyeing machines, in particular to a dyeing method of a dyeing machine. Background Art

[0002] At present, dyeing machines in the textile industry are usually mainly intermittent dyeing machines. Dyeing machines have many uses. For example, they can be mainly used for dyeing, bleaching, scouring and washing processes of ready-made clothes such as wool sweaters, acrylic and cotton sweaters. They can also be used for bleaching and dyeing of finished products such as gloves, socks and towels. It is a bleaching and dyeing equipment with a wide range of applications.

[0003] The dyeing machines in the prior art are usually provided with a feeding system, and dyes and chemical additives are added from time to time during the dyeing process. The general structure is to use a mixing barrel. The dyes and chemical additives are stirred evenly in the mixing barrel and then injected into the main pump. The dye liquid in the mixing barrel is directly pumped to the water nozzle through the main pump and the connecting pipeline for spraying the cloth.

[0004] Although this dyeing machine has a simple structure, it has a long dyeing time, low production efficiency, and high production cost, and cannot meet the needs of energy conservation, emission reduction, and low-carbon environmental protection. In addition, after the feeding system is filled with materials, a small amount of residual dye liquid will be hidden in the filling pipe. This phenomenon will cause color spots to appear on the fabric when it is dyed with other colors next time. Summary of the invention

[0005] In view of the above-mentioned defects, the purpose of the present invention is to propose a dyeing method using a dyeing machine, which can improve the uniformity of dyeing and thus improve the dyeing quality; optimize the dyeing production process, reduce the production cost, and shorten the dyeing time, thereby improving production efficiency. In addition, after the fabric dyeing is completed, the fabric circulation system and the mixing system can be cleaned to ensure the dyeing quality of the fabric when it is dyed other colors next time.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A dyeing method using a dyeing machine, comprising a fabric circulation system and a mixing system;

[0008] The fabric circulation system comprises a fabric lifting device, a cylinder body and a fabric guide pipe, the cylinder body is connected to the fabric guide pipe, the fabric lifting device is installed at the front of the cylinder body, so that the fabric is circulated and dyed in the cylinder body and the fabric guide pipe;

[0009] The mixing system comprises a first drainage valve, a mixing device and a plurality of barrels, wherein the discharge ends of the plurality of barrels are connected to the mixing device, and the first drainage valve is connected to the mixing device and an external pipeline;

[0010] The dyeing method of the dyeing machine comprises the following steps:

[0011] S0, the fabric enters the cylinder from the inlet of the cylinder, and the fabric lifting device makes the fabric circulate in the cylinder and the fabric guide pipe;

[0012] S1. Different dyes and auxiliaries are injected into barrels, and the dyes and auxiliaries in one or several barrels of the multiple barrels enter the mixing device and are evenly mixed to form a mixed dye solution;

[0013] S2, the mixed dye liquid in the mixing device enters the fabric guide pipe and the cylinder body to dye the fabric in the cylinder body and the fabric guide pipe;

[0014] S3, the mixed dye liquor discharged from the cylinder body flows back into the mixing device, mixes with the dye and auxiliary agent in the mixing device, and dilutes the dye and auxiliary agent in the mixing device;

[0015] S4, repeating steps S2-S3 to achieve multiple dyeing of the fabric in the cylinder body and the fabric guide tube until the fabric is dyed evenly;

[0016] S5. After the fabric dyeing is completed, clean water is injected into the cylinder body. After the clean water is discharged from the cylinder body, part of the clean water flows into the mixing device and is discharged through the first drain valve, and the other part of the clean water flows back to the cylinder body, flows out of the cylinder body, flows into the mixing device, and is discharged through the first drain valve.

[0017] Furthermore, the discharge end of each of the barrels is provided with a feeding pump and a first injection valve;

[0018] A plurality of the material barrels are arranged side by side, and the dyes and additives outputted from the plurality of material barrels are merged into a second confluence branch, and the second confluence branch is provided with a valve assembly;

[0019] In the step S1, the feeding pumps and the first injection valves at the discharge ends of the different barrels are opened, and the dye and the auxiliary agent enter the second reflux branch from the barrel through the first injection valve, and the dye and the auxiliary agent enter the mixing device through the valve assembly.

[0020] Furthermore, a main pump is provided at the output end of the mixing device;

[0021] In the step S2, the mixed dye solution is pumped from the mixing device into the fabric guide pipe and the cylinder through the main pump.

[0022] Furthermore, a heat exchanger is provided at the output end of the main pump;

[0023] In step S2, after the mixed dye liquid is pumped out from the main pump, it is heated by the heat exchanger, and part of the dye and auxiliary agent of the heated mixed dye liquid is sprayed to various parts of the cylinder body, and the other part of the dye and auxiliary agent flows into the fabric guide pipe.

[0024] Furthermore, in step S3, the mixed dye liquor passes through the cylinder and the mixing valve in sequence and enters the mixing device.

[0025] Furthermore, the step S5 includes the following steps:

[0026] S501, pour clean water into the cylinder through the inlet of the cylinder, and the clean water is pumped from the cylinder into the mixing device through the main pump or flows back to the cylinder or back to the fabric guide pipe;

[0027] S502, the clean water that flows back to the cylinder body or the fabric guide pipe is collected in the cylinder body, and is pumped from the cylinder body into the mixing device through the main pump; the clean water pumped into the mixing device passes through the valve assembly and is discharged from the first drain valve;

[0028] S503, repeating step S501-step S502 until the fabric circulation system and the mixing system are cleaned.

[0029] Furthermore, the step S5 further includes step S504: injecting clean water into the material barrel, opening the feed pump and the first water injection valve, and allowing the clean water to pass through the feed pump and the first water injection valve from the material barrel and be discharged from the first drain valve.

[0030] Furthermore, the step S5 includes the following steps:

[0031] S501, inject clean water into the material barrel, open the feed pump and the first water injection valve, and the clean water passes through the feed pump and the first water injection valve from the material barrel and is discharged from the first drain valve;

[0032] S502, pour clean water into the cylinder through the inlet of the cylinder, the clean water is pumped from the cylinder into the mixing device through the main pump or flows back to the cylinder or the fabric guide pipe; the clean water flowing back to the cylinder or the fabric guide pipe is collected in the cylinder, and is pumped from the cylinder into the mixing device through the main pump; the clean water pumped into the mixing device passes through the valve assembly and is discharged from the first drain valve;

[0033] S503, repeating step S501-step S502 until the fabric circulation system and the mixing system are cleaned.

[0034] Furthermore, the dyeing method of the dyeing machine also includes a dye liquor circulation system, and the dye liquor circulation system includes a dye output branch and a dye return branch;

[0035] The discharge end of the dye output branch and the discharge end of the dye return branch form a first confluence branch, and the main pump is located at the first confluence branch;

[0036] The dye output branch is connected to the fabric guide pipe and the mixing device, and the dye return branch is connected to the cylinder body and the mixing device.

[0037] Furthermore, the cylinder body comprises a cylinder head, a cylinder body and a cylinder tail which are connected in sequence;

[0038] The fabric moves from the cylinder tail to the cylinder head in the cylinder body, the cylinder head is inclined upward along the moving direction of the fabric, and the cylinder tail is inclined downward along the moving direction of the fabric;

[0039] A working door is provided at the front end of the cylinder head, and the cloth lifting device is installed at the front part of the cylinder head;

[0040] A water nozzle is installed below the cloth lifting device, the water nozzle is connected to the cylinder head and one end of the cloth guide pipe, and the other end of the cloth guide pipe is connected to the cylinder tail;

[0041] A water outlet is provided at the bottom of the cylinder body, the water outlet is connected to the dye reflux branch and the cylinder body, and the water nozzle is connected to the dye output branch and the fabric guide pipe.

[0042] Furthermore, the cloth lifting device comprises a motor, a frequency converter and a cloth lifting roller, the motor is electrically connected to the frequency converter, and the output end of the motor is connected to the cloth lifting roller;

[0043] The motor drives the cloth lifting roller to rotate, so that the cloth lifting roller drives the fabric to move in the cylinder, and the frequency converter is used to adjust the speed of the cloth lifting roller;

[0044] The step S0 also includes a method for controlling the rotation speed of the cloth lifting roller, and the method for controlling the rotation speed of the cloth lifting roller includes the following steps:

[0045] S000, in the initial state, the torque value of the cloth lifting roller is a, and the speed of the cloth lifting roller is b;

[0046] S001. During the operation of the motor, the torque value of the cloth lifting roller is continuously detected;

[0047] S002. If the torque value of the cloth lifting roller during operation is greater than a, adjust the torque of the frequency converter to reduce the speed of the cloth lifting roller;

[0048] S003, re-determine the torque value of the cloth lifting roller;

[0049] S004. If the torque value of the cloth lifting roller is still greater than a, the cloth lifting device is turned off, and manual intervention is performed to adjust the fabric to ensure normal operation;

[0050] S005. If the torque value of the cloth lifting roller is less than or equal to a, adjust the torque of the frequency converter so that the speed of the cloth lifting roller returns to the speed state b.

[0051] The technical solution provided by the present invention may include the following beneficial effects:

[0052] In the present invention, by repeatedly recycling dyes and auxiliaries, the dyeing production process is optimized, the production cost is reduced, and the dyeing time is shortened, thereby improving the production efficiency. At the same time, the fabric circulation system and the mixing system can be cleaned after the fabric dyeing is completed, which solves the problem that after the feeding system of the dyeing machine in the prior art is filled with material, a small amount of residual dye liquid will be hidden in the filling pipe, thereby causing the fabric to have color spots when dyeing other colors next time. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 It is a structural schematic diagram of an embodiment of a dyeing method of a dyeing machine of the present invention;

[0054] Figure 2 yes Figure 1 Schematic diagram of dye liquor circulation direction and clean water rinsing direction in the illustrated embodiment;

[0055] Figure 3 yes Figure 1 A schematic structural diagram of a fabric circulation system of the illustrated embodiment;

[0056] Figure 4 yes Figure 1 A schematic structural diagram of a cloth lifting device in the illustrated embodiment;

[0057] Figure 5 yes Figure 1 The schematic diagram of the flow chart of the method for controlling the rotation speed of the cloth lifting roller in the illustrated embodiment;

[0058] Among them: 1- fabric circulation system, 11- cloth lifting device, 111- motor, 112- cloth lifting roller, 12- cylinder body, 121- cylinder head, 122- cylinder body, 123- cylinder tail, 124- working door, 125- water nozzle, 126- water outlet, 13- cloth guide pipe; 2- dye liquid circulation system, 21- dye output branch, 211- heat exchanger, 212- shower balancing device, 22- dye return branch, 221- mixing valve, 23- first confluence branch, 24- main pump, 25- scraper; 3- mixing system, 31- mixing device, 32- barrel, 33- feeding pump, 34- first injection valve, 35- second confluence branch, 36- valve assembly, 361- quantitative valve, 362- manual valve group, 3621- manual valve, 3622- second injection valve, 37- first drain valve. DETAILED DESCRIPTION

[0059] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0060] In the description of the present invention, it should be understood that the terms "front", "rear", "left", "right", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of the features, and are used to distinguish and describe features, without distinction of order or importance.

[0061] In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0062] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] Combine the following Figures 1 to 5 , describes a dyeing method of a dyeing machine according to an embodiment of the present invention, comprising a fabric circulation system 1 and a mixing system 3;

[0064] The fabric circulation system 1 includes a fabric lifting device 11, a cylinder 12 and a fabric guide pipe 13. The cylinder 12 is connected to the fabric guide pipe 13. The fabric lifting device 11 is installed at the front of the cylinder 12 so that the fabric is circulated and dyed in the cylinder 12 and the fabric guide pipe 13. The mixing system 3 includes a mixing device 31 and a plurality of barrels 32. The discharge ends of the plurality of barrels 32 are all connected to the mixing device 31.

[0065] The dyeing method of the dyeing machine comprises the following steps:

[0066] S0, the fabric enters the cylinder 12 from the inlet of the cylinder 12, and the fabric lifting device 11 makes the fabric circulate in the cylinder 12 and the fabric guide pipe 13;

[0067] S1, different dyes and auxiliaries are injected into different barrels 32, and the dyes and auxiliaries in one or several barrels 32 among the multiple barrels 32 enter the mixing device 31 and are evenly mixed to form a mixed dye solution;

[0068] S2, the mixed dye liquid in the mixing device 31 enters the fabric guide pipe 13 and the cylinder body 12, and the fabric in the cylinder body 12 and the fabric guide pipe 13 is dyed once;

[0069] S3, the mixed dye liquid discharged from the cylinder 12 flows back into the mixing device 31, and is mixed with the dye and auxiliary agent in the mixing device 31 to dilute the dye and auxiliary agent in the mixing device 31;

[0070] S4, repeating steps S1-S3 to achieve multiple dyeing of the fabric in the cylinder 12 and the fabric guide tube 13 until the fabric is dyed evenly;

[0071] S5. After the fabric dyeing is completed, clean water is injected into the cylinder 12. After the clean water is discharged from the cylinder 12, part of the clean water flows into the mixing device 31 and is discharged through the first drain valve 37. The other part of the clean water flows back to the cylinder 12, flows out of the cylinder 12, and flows into the mixing device 31 and is discharged through the first drain valve 37.

[0072] In the present invention, during the dyeing process of the dyeing machine, step S0 and step S1 are performed synchronously. After step S1 is completed, the injection of dyes and additives into the barrel 32 is stopped, and then the dyes and additives in one or more of the barrels 32 are injected into the mixing device 31 and mixed evenly to form a mixed dye solution according to the dyes and additives required in the dyeing process. This method can mix the dyes and additives as needed during the dyeing process, without the need to mix the dyes and additives in advance and then inject them into the cylinder 12 to dye the fabric, thereby shortening the time required for production. In addition, after the fabric dyeing is completed, the fabric circulation system 1 and the mixing system 3 can be cleaned to ensure the dyeing quality of the fabric when it is dyed with other colors next time.

[0073] In the present invention, the dyeing uniformity is improved by recycling the dye and the auxiliary agent for many times, and then the dyeing quality is improved; the dyeing production process is optimized, the production cost is reduced, and the dyeing time is shortened, thereby improving the production efficiency. In addition, after the fabric is dyed, the fabric circulation system 1 and the mixing system 3 can be cleaned, which solves the problem that after the feeding system of the dyeing machine in the prior art is filled with material, a small amount of residual dye liquid will be hidden in the filling pipe, thereby causing the fabric to have color spots when it is dyed with other colors next time.

[0074] Furthermore, each material barrel 32 is provided with a feeding pump 33 and a first injection valve 34 at the discharge end; multiple material barrels 32 are arranged side by side, and the dyes and additives output by the multiple material barrels 32 are merged into the second confluence branch 35, and the second confluence branch 35 is provided with a valve assembly 36; in step S1, the feeding pumps 33 and the first injection valves 34 at the discharge ends of different material barrels are opened, and the dyes and additives enter the second reflux branch 35 from the material barrel through the first injection valve 34, and the dyes and additives enter the mixing device 31 through the valve assembly.

[0075] The discharge end of each material barrel 32 is provided with a feeding pump 33 and a first injection valve 34, and the dye and auxiliary agent are pumped out through the feeding pump 33. In addition, during the dyeing process, the dyeing machine can open or close the first injection valve 34 of the corresponding material barrel 32 according to the process requirements of the dyeing process. After the precise delivery of different dyes and auxiliary agents is achieved through the first injection valve, the dye and auxiliary agent pass through the valve assembly 36, so that during the dyeing process, the delivery amount and delivery speed of the dye and auxiliary agent of the dyeing machine can be controlled, thereby improving the dyeing quality of the fabric.

[0076] It is worth noting that the valve assembly 36 includes a metering valve 361 and a manual valve group 362, and the metering valve 361 is connected to the manual valve group 362 in parallel; the manual valve group 362 includes a manual valve 3621 and a second injection valve 3622 that are connected, the feed end of the manual valve 3621 is connected to the feed end of the metering valve 361, and the discharge end of the injection valve is connected to the discharge end of the metering valve 361; the metering valve 361 allows the dye and the auxiliary agent to flow into the mixing device 31 in a timely and quantitative manner according to the demand for the dye and the auxiliary agent during the operation of the dyeing machine, thereby improving the working efficiency of the dyeing machine; and the setting of the manual valve group 362 allows the manual valve group 362 to control the dyeing flow in the mixing device 31 when the metering valve 361 fails, thereby improving the usability of the dyeing machine.

[0077] Furthermore, a main pump 24 is provided at the output end of the mixing device 31; in step S2, the mixed dye liquor is pumped from the mixing device 31 into the fabric guide pipe 13 and the cylinder body 12 through the main pump 24. After the different dyes and auxiliaries enter the mixing device 31 and are mixed evenly to form a mixed dye liquor, the main pump 24 needs to be turned on first, and the dyes and auxiliaries are pumped from the mixed dye liquor into the fabric guide pipe 13 and the cylinder body 12 through the main pump 24 to dye the fabric.

[0078] The output end of the main pump 24 is provided with a heat exchanger 211; in step S2, after the mixed dye liquid is pumped out by the main pump 24, it is heated by the heat exchanger 211, and part of the dye and auxiliaries of the heated mixed dye liquid are sprayed to various parts of the cylinder body 12, and the other part of the dye and auxiliaries flow into the fabric guide pipe 13. During the dyeing process, the dye and auxiliaries are heated in a linear proportion by the heat exchanger 211, and chemical auxiliaries are added from time to time during the dyeing process. Due to the long length of the cylinder body 122, the concentration and temperature of the dye and auxiliaries at the front of the cylinder body 122 will be lower than the concentration and temperature of the dye and auxiliaries at the tail of the cylinder body 122, resulting in uneven coloring of the fabric, resulting in color flower phenomenon; at the same time, when dyeing temperature-sensitive fabrics, the large temperature difference causes uneven shrinkage of the fabric surface, resulting in permanent creases. Therefore, in the present invention, part of the dye and auxiliary agent heated by the heat exchanger 211 is sprayed into the cylinder 12, and the fabrics at different positions in the cylinder 12 are spray-dyed, thereby ensuring the balance of concentration difference and temperature difference of the fabrics at different positions in the cylinder 12, thereby improving the dyeing quality of the dyeing machine.

[0079] It is worth noting that the process of spraying the heated part of the mixed dye liquid to the cylinder body 12 is realized by the shower balancing device, and the shower balancing device 212 extends from the front end to the rear end of the cylinder body 12; the spray dye flow rate distributed to the cylinder body 12 by the shower balancing device 212 gradually decreases from the front to the back. Specifically, the water outlet holes of the shower balancing device 212 at the front of the cylinder body 12 are dense, the water outlet holes of the shower balancing device 212 in the middle of the cylinder body 12 are second, and the water outlet holes of the shower balancing device 212 at the tail of the cylinder body 12 are the sparsest; the concentration difference and temperature difference of the dye and the auxiliary agent at each place in the cylinder body 12 are quantitatively compensated by the shower balancing device 212, so that the concentration difference and temperature difference of the dye and the auxiliary agent in the cylinder body 12 are small, and the balance is reached quickly.

[0080] Preferably, the shower balancing device 212 adopts a double spray structure. A small spray is used during dyeing, which does not affect the nozzle pressure and satisfies the compensation for the concentration difference and temperature difference of the dye and the auxiliary agent without damaging the fabric, while preventing the accumulation of the dye and the auxiliary agent, which causes uneven dyeing of the fabric; when the cylinder body 12 is cleaned, a large spray is used to ensure sufficient water volume and water pressure, and the cylinder wall is rinsed more thoroughly. Combined with the shape design of the cylinder body 122, every corner of the cylinder body 12 can be rinsed. Specifically, after the clean water flows along the dye output branch 21 to the heat exchanger 211, part of the water flow is sprayed into the cylinder body 12 through the shower balancing device 212 to achieve all-round spraying of the cylinder body 12.

[0081] In step S3, the dye and the auxiliary agent sequentially pass through the cylinder 1 and the mixing valve 221 into the mixing device 31. The setting of the mixing valve 221 enables the dyeing machine to open or close the mixing valve according to the actual production needs; when secondary dilution and mixing are not required, the mixing valve 221 can be closed, thereby improving the usability of the dyeing machine.

[0082] Since different dyes and auxiliaries are added during the dyeing process, the dyes and auxiliaries will flow through various flow channels of the dyeing machine to circulate and dye the fabric. Due to the high concentration of dyes and auxiliaries, a small amount of residual dye and auxiliaries liquid will be hidden in the flow channel of the dyeing machine after dyeing, which will cause color spots to appear when the fabric is dyed with other colors next time, resulting in poor fabric dyeing quality. Therefore, the dyeing method of the dyeing machine also provides a step of cleaning the fabric circulation system 1 and the mixing system 3. The entire dyeing machine can be cleaned by utilizing the fluidity of the various pipes in the fabric circulation system 1 and the mixing system 3, which greatly reduces production costs, optimizes production processes and shortens processing time.

[0083] Furthermore, the step S5 includes the following steps:

[0084] S501, pour clean water into the cylinder 12 through the inlet of the cylinder 12, and the clean water is pumped from the cylinder 12 into the mixing device 31 through the main pump 24 or flows back to the cylinder 12 or flows back to the fabric guide pipe 13;

[0085] S502, the clean water that flows back to the cylinder body 12 or the fabric guide pipe 13 is collected in the cylinder body 12, and is pumped into the mixing device 31 from the cylinder body 12 through the main pump 24; the clean water pumped into the mixing device 31 passes through the valve assembly 36 and is discharged by the first drain valve 37;

[0086] S503, repeating step S501-step S502 until the fabric circulation system 1 and the mixing system 3 are cleaned.

[0087] Furthermore, the step S5 further includes step S504: injecting clean water into the material barrel 32, opening the feed pump 33 and the first water injection valve 34, and the clean water passes through the feed pump 33 and the first water injection valve 34 from the material barrel 32 and is discharged from the first drain valve 37.

[0088] Specifically, there are multiple first drain valves 37, and the position of the first drain valves 37 is opposite to the material barrel 32. After clean water is injected into the material barrel 32, the pipeline where the material barrel 34 is located can be directly cleaned and the sewage can be discharged by the first drain valve 37 without causing secondary pollution to other pipelines; in addition, in step S501, when the clean water is pumped out from the cylinder body 12 through the main pump 24, the clean water will be diverted, part of the clean water will be used to clean the cylinder body 12 and the fabric guide pipe 13, and the other part of the clean water will be used to clean the mixing device 31, which greatly shortens the cleaning time; in addition, in some embodiments, steps S501-step S503 and step S504 can be performed simultaneously, which further shortens the processing time of the dyeing machine and improves production efficiency.

[0089] It is worth noting that if Figure 1 As shown, the cylinder body 12 is also provided with a second drain valve (not shown in the figure), and the water outlet 126 of the cylinder body 12 is connected to the material barrel 32. In step S5, after the clean water finishes running in the cylinder body 12, part of the clean water is discharged through the second drain valve, and the other part of the clean water flows back into the material barrel 32 and is discharged through the first drain valve 37.

[0090] Furthermore, the dyeing method of the dyeing machine also provides a dye liquid circulation system, the dye liquid circulation system 2 includes a dye output branch 21 and a dye return branch 22; the discharge end of the dye output branch 21 and the discharge end of the dye return branch 22 are a first confluence branch 23, and the main pump 24 is located at the first confluence branch 23; the dye output branch 21 is connected to the fabric guide pipe 13 and the mixing device 31, and the dye return branch 22 is connected to the cylinder body 12 and the mixing device 31.

[0091] The dye and auxiliary agent in the dyeing process flow from the barrel 32 through the second confluence branch 35 and then enter the mixing device 31 to be mixed evenly to form a mixed dye liquid. The mixed dye liquid flows from the mixing device 31 through the dye output branch 21 through the main pump 24 and then enters the fabric guide pipe 13. The dye and auxiliary agent flowing through the fabric guide pipe 13 flow radially along the fabric guide pipe 13 and then enter the cylinder body 12. The dye and auxiliary agent are pumped out of the cylinder body 12 through the main pump 24, and then flow through the dye return branch 22 and then enter the mixing device 31.

[0092] The clean water for cleaning the fabric circulation system 1 and the mixing system 3 is pumped out from the cylinder 12 by the main pump 24, and then diverted to the dye output branch 21 and the dye return branch 22. The clean water flowing through the dye output branch 21 enters the fabric guide pipe 13 and the cylinder 14 respectively, and finally converges in the cylinder 14. After being pumped out by the main pump 24, it flows through the dye return branch 22 and then enters the mixing device 31. The clean water flows from the mixing device 31 through the second confluence branch 35 and is discharged by the first drain valve 37. The clean water flowing through the dye return branch 22 flows into the mixing device 31 and then flows through the second confluence branch 35 and is discharged by the first drain valve 37.

[0093] Specifically, the output end of the dye output branch 21 and the output end of the dye return branch 22 can merge to form a first confluence branch 23, and the dye output branch 21 and the dye return branch 22 share a main pump 24, which further reduces the production cost and achieves the purpose of energy saving, emission reduction, low carbon and environmental protection;

[0094] It is worth noting that the dye and auxiliary agent refluxed by the dye reflux branch 22 are pumped out by the main pump 24, and then enter the mixing device 31 through the scraper 25 for circulation. The setting of the scraper 25 ensures that there will be no broken hairs in the dye and auxiliary agent entering the fabric circulation system 1.

[0095] It can be understood that the heat exchanger 211 is located in the dye output branch 21; the mixing valve 221 is located in the dye return branch 22; when the dye and auxiliary agent are circulated or the fabric circulation system 1 and the mixing system 3 are cleaned by clean water, the heat exchanger 211 and the mixing valve 221 need to be opened.

[0096] Furthermore, the cylinder body 12 includes a cylinder head 121, a cylinder body 122 and a cylinder tail 123 which are connected in sequence; the fabric moves from the cylinder tail 123 to the cylinder head 121 in the cylinder body 12, the cylinder head 121 is inclined upward along the moving direction of the fabric, and the cylinder tail 123 is inclined downward along the moving direction of the fabric; a working door 124 is provided at the front end of the cylinder head 121, and the cloth lifting device 11 is installed at the front part of the cylinder head 121; a water nozzle 125 is installed below the cloth lifting device 11, the water nozzle 125 is connected to the cylinder head 121 and one end of the cloth guide pipe 13, and the other end of the cloth guide pipe 13 is connected to the cylinder tail 123; a water outlet 126 is provided at the bottom of the cylinder body 122, the water outlet 126 is connected to the dye reflux branch 22 and the cylinder body 12, and the water nozzle 125 is connected to the dye output branch 21 and the cloth guide pipe 13.

[0097] The fabric enters the cylinder body 12 through the working door 124, and enters the fabric guide pipe 13 along the water nozzle 125. The fabric entering the fabric guide pipe 13 moves along the radial direction of the pipe, enters the cylinder tail 123, and moves from the cylinder tail 123 to the cylinder head 121, and is sleeved in the fabric lifting device 11. As the fabric lifting device 11 is started, the fabric is driven to re-enter the water nozzle 125, thereby realizing the cyclic dyeing of the fabric in the fabric guide pipe 13 and the cylinder body 12. In addition, since the water nozzle 125 is connected to the dye output branch 21 and the fabric guide pipe 13, the dye at the dye output end is sprayed on the fabric through the water nozzle 125.

[0098] It is worth noting that a fabric storage tank is provided in the cylinder 12, and water flows in the fabric storage tank. The fabric moves smoothly in the fabric storage tank by combining water flow and gravity. At the same time, the dye and the auxiliary agent are sprayed from the water nozzle 125 to contact the fabric. The fabric, the dye and the auxiliary agent enter the fabric storage tank of the cylinder 12 through the fabric guide tube 13, and the fabric is repeatedly circulated by the cloth lifting roller 112 to complete the dyeing process of the fabric. Preferably, the fabric storage tank is a gradual structure. When the fabric moves in the fabric guide tube 13, it is in a bundle shape, but after entering the fabric storage tank at the tail of the cylinder 122, the fabric is circumferentially expanded along the notch of the fabric storage tank. This structure can make the easy-to-curl fabric well untied and relaxed, reducing the probability of creases.

[0099] Preferably, the water nozzle 125 is an intelligent automatic adjustment nozzle. By adopting an electric actuator and a PLC closed-loop control system, the water nozzle 125 can be accurately adjusted. The flow rate and pressure of the water nozzle 125 can be automatically adjusted to the optimal state according to different fabric types, different process stages, different water levels, etc., thereby improving the spraying effect. In addition, the intelligent automatic adjustment nozzle does not require manual replacement of nozzles of different sizes according to changes in fabric types, thereby reducing labor intensity and saving labor time. At the same time, it also avoids damage to the dyeing machine during the nozzle replacement process, thereby avoiding dyeing problems caused by the damage.

[0100] Specifically, the cylinder head 121 is inclined upward along the moving direction of the fabric, and the cylinder tail 123 is inclined downward along the moving direction of the fabric, so that the overall shape of the cylinder body 12 is a " " shape. The shape of the cylinder body 12 allows the fabric to move forward under the combined action of water flow and gravity, and at the same time, the dye and auxiliary agent at the cylinder tail 123 can quickly flow to the cylinder body 122, and at the same time, the fabric will be piled up in the cylinder body 122, and the dye and auxiliary agent in the cylinder body 122 play a role in soaking the fabric, thereby improving the fabric levelness. In addition, the " "-shaped structure has a large inclination angle, and the dye and auxiliary agent return water speed is fast, which reduces the dyeing bath ratio. At the same time, the fabric can be pushed in the fabric trough by its own gravity at a certain distance, and less water is required; and under the condition of the same water pump circulation flow, the lower the dyeing machine bath ratio, the easier it is to achieve uniform temperature and concentration of the dyeing machine, and the better the levelness of the dyeing machine; therefore, the " "-shaped structure can effectively reduce the dyeing bath ratio and improve the dyeing quality, while also achieving the effects of energy saving, consumption reduction, quality improvement and efficiency enhancement.

[0101] Preferably, the fabric guide tube 13 in the present invention is a variable cross-section fabric guide tube 13, that is, the front end of the variable cross-section fabric guide tube 13 is circular, the middle section is an elliptical structure, and the rear section is circular. Since a certain vortex will be generated when a strong water flow passes through the water nozzle 125 during the dyeing process, the fabric will be twisted along the direction of the water flow, which will cause creases, color spots, etc. on the fabric. Therefore, the variable cross-section fabric guide tube 13 can effectively prevent the generation of water flow vortices and make the fabric move forward smoothly. In addition, the variable cross-section fabric guide tube 13 structure allows the fabric to continuously unfold during the movement of the fabric guide tube 13, so that temporary creases and wrinkles can be continuously changed in position without forming permanent creases, greatly reducing the probability of creases and wrinkles.

[0102] The cloth lifting device 11 comprises a motor 111, a frequency converter and a cloth lifting roller 112, the motor 111 is electrically connected to the frequency converter, and the output end of the motor 111 is connected to the cloth lifting roller 112;

[0103] The motor 111 drives the cloth lifting roller 112 to rotate, so that the cloth lifting roller 112 drives the fabric to move in the cylinder body 12, and the frequency converter is used to adjust the speed of the cloth lifting roller 112;

[0104] Step S0 also includes a method for controlling the rotation speed of the cloth lifting roller, and the method for controlling the rotation speed of the cloth lifting roller includes the following steps:

[0105] S000, in the initial state, the torque value of the cloth lifting roller 112 is a, and the speed of the cloth lifting roller 112 is b;

[0106] S001, during the operation of the motor 111, the torque value of the cloth lifting roller 112 is continuously detected;

[0107] S002, if the torque value of the cloth lifting roller 112 during operation is greater than a, adjust the torque of the frequency converter to reduce the speed of the cloth lifting roller 112;

[0108] S003, re-determine the torque value of the cloth lifting roller 112;

[0109] S004, if the torque value of the cloth lifting roller 112 is still greater than a, the cloth lifting device 11 is turned off, and manual intervention is performed to adjust the fabric to enable normal operation;

[0110] S005. If the torque value of the cloth lifting roller 112 is less than or equal to a, adjust the torque of the frequency converter so that the speed of the cloth lifting roller 112 returns to the speed state b.

[0111] During the dyeing process, the fabric is easily entangled in the cloth lifting roller 112 or the fabric cannot enter the water nozzle 125 and accumulates in the cylinder head 121, causing wear on the fabric. When the fabric is entangled in the cloth lifting roller 112 or the fabric cannot enter the water nozzle 125, the torque of the cloth lifting roller 112 is greater than the torque during normal operation. Therefore, the present invention provides a method for controlling the rotation speed of the cloth lifting roller. When the torque of the cloth lifting roller 112 is greater than the torque value during normal operation, the torque of the frequency converter is adjusted to reduce the speed of the cloth lifting wheel to reduce the relative movement of the fabric to the cloth lifting roller. 112 slides, thereby reducing the friction between the fabric and the cloth lifting roller 112, and ultimately reducing the mechanical damage of the cloth lifting roller 112 to the fabric, so that the fabric can circulate smoothly in the cylinder 12 and the cloth guide tube 13; in addition, when the torque of the cloth lifting roller 112 is abnormal, the cloth lifting wheel will automatically reverse to unwind, reducing machine failure and damage to the fabric or manual intervention during machine failure; in addition, the method for controlling the rotation speed of the cloth lifting roller can also increase the speed of the cloth lifting roller 112 accordingly, thereby shortening the fabric dyeing cycle time, improving dyeing levelness and increasing the cloth loading capacity.

[0112] Other structures and operations of the dyeing method of a dyeing machine according to the embodiment of the present invention are known to ordinary technicians in the field and will not be described in detail here.

[0113] In the description of this specification, the description with reference to the terms "embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0114] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A dyeing method using a dyeing machine, characterized in that: Including fabric circulation system and mixing system; The fabric circulation system comprises a fabric lifting device, a cylinder body and a fabric guide pipe, the cylinder body is connected to the fabric guide pipe, the fabric lifting device is installed at the front of the cylinder body, so that the fabric is circulated and dyed in the cylinder body and the fabric guide pipe; The cloth guide pipe is a variable-section cloth guide pipe, the front end of which is circular, the middle section is an elliptical structure, and the rear section is circular; The mixing system comprises a first drainage valve, a mixing device and a plurality of barrels, wherein the discharge ends of the plurality of barrels are connected to the mixing device, and the first drainage valve is connected to the mixing device and an external pipeline; The discharge end of each barrel is provided with a feeding pump and a first injection valve; A plurality of the material barrels are arranged side by side, and the dyes and additives outputted from the plurality of material barrels are merged into a second confluence branch, and the second confluence branch is provided with a valve assembly; The output end of the mixing device is provided with a main pump; A heat exchanger is provided at the output end of the main pump; It also includes a dye liquor circulation system, which includes a dye output branch and a dye return branch; The discharge end of the dye output branch and the discharge end of the dye return branch form a first confluence branch, and the main pump is located at the first confluence branch; The dye output branch is connected to the fabric guide pipe and the mixing device, and the dye return branch is connected to the cylinder and the mixing device; The cylinder body comprises a cylinder head, a cylinder body and a cylinder tail which are connected in sequence; The fabric moves from the cylinder tail to the cylinder head in the cylinder body, the cylinder head is inclined upward along the moving direction of the fabric, and the cylinder tail is inclined downward along the moving direction of the fabric; A working door is provided at the front end of the cylinder head, and the cloth lifting device is installed at the front part of the cylinder head; A water nozzle is installed below the cloth lifting device, the water nozzle is connected to the cylinder head and one end of the cloth guide pipe, and the other end of the cloth guide pipe is connected to the cylinder tail; The bottom of the cylinder body is provided with a water outlet, the water outlet is connected with the dye return branch and the cylinder body, and the water nozzle is connected with the dye output branch and the fabric guide pipe; The dyeing method of the dyeing machine comprises the following steps: S0, the fabric enters the cylinder from the inlet of the cylinder, and the fabric lifting device makes the fabric circulate in the cylinder and the fabric guide pipe; S1. Different dyes and auxiliaries are injected into a barrel, and the dyes and auxiliaries in one or several barrels of the multiple barrels enter a mixing device and are evenly mixed to form a mixed dye solution; S2, the mixed dye liquid in the mixing device enters the fabric guide pipe and the cylinder body to dye the fabric in the cylinder body and the fabric guide pipe; S3, the mixed dye liquor discharged from the cylinder body flows back into the mixing device, mixes with the dye and auxiliary agent in the mixing device, and dilutes the dye and auxiliary agent in the mixing device; S4, repeating steps S2-S3 to achieve multiple dyeing of the fabric in the cylinder body and the fabric guide tube until the fabric is dyed evenly; S5, after the fabric dyeing is completed, clean water is injected into the cylinder body, and after the clean water is discharged from the cylinder body, part of the clean water flows into the mixing device and is discharged through the first drain valve, and the other part of the clean water flows back to the cylinder body, flows out of the cylinder body, flows into the mixing device, and is discharged through the first drain valve; In the step S1, the feed pumps and the first injection valves at the discharge ends of the different barrels are opened, and the dye and the auxiliary agent enter the second confluence branch from the barrel through the first injection valve, and the dye and the auxiliary agent enter the mixing device through the valve assembly; In the step S2, the mixed dye liquor is pumped from the mixing device into the fabric guide pipe and the cylinder through the main pump; In the step S2, after the mixed dye liquid is pumped out from the main pump, it is heated by the heat exchanger, and part of the heated mixed dye liquid is sprayed to various parts of the cylinder body, and the other part of the mixed dye liquid flows into the fabric guide pipe; In the step S3, the mixed dye liquor passes through the cylinder and the mixing valve in sequence and enters the mixing device; The step S5 includes the following steps: S501, pour clean water into the cylinder through the inlet of the cylinder, and the clean water is pumped from the cylinder into the mixing device through the main pump or flows back to the cylinder or back to the fabric guide pipe; S502, the clean water that flows back to the cylinder body or the fabric guide pipe is collected in the cylinder body, and is pumped from the cylinder body into the mixing device through the main pump; the clean water pumped into the mixing device passes through the valve assembly and is discharged from the first drain valve; S503, repeating step S501-step S502 until the fabric circulation system and the mixing system are cleaned.

2. The dyeing method according to claim 1, characterized in that: The step S5 further includes step S504: injecting clean water into the material barrel, opening the feed pump and the first water injection valve, and allowing the clean water to pass through the feed pump and the first water injection valve from the material barrel and be discharged from the first drainage valve.

3. The dyeing method of claim 1, characterized in that: The cloth lifting device comprises a motor, a frequency converter and a cloth lifting roller, the motor is electrically connected to the frequency converter, and the output end of the motor is connected to the cloth lifting roller; The motor drives the cloth lifting roller to rotate, so that the cloth lifting roller drives the fabric to move in the cylinder, and the frequency converter is used to adjust the speed of the cloth lifting roller; The step S0 also includes a method for controlling the rotation speed of the cloth lifting roller, and the method for controlling the rotation speed of the cloth lifting roller includes the following steps: S000, in the initial state, the torque value of the cloth lifting roller is a, and the speed of the cloth lifting roller is b; S001. During the operation of the motor, the torque value of the cloth lifting roller is continuously detected; S002. If the torque value of the cloth lifting roller during operation is greater than a, adjust the torque of the frequency converter to reduce the speed of the cloth lifting roller; S003, re-determine the torque value of the cloth lifting roller; S004. If the torque value of the cloth lifting roller is still greater than a, the cloth lifting device is turned off, and manual intervention is performed to adjust the fabric to ensure normal operation; S005. If the torque value of the cloth lifting roller is less than or equal to a, adjust the torque of the frequency converter so that the speed of the cloth lifting roller returns to the speed state b.

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