Laboratory jet dyeing proofing machine with low bath ratio

Abstract

The invention relates to the technical field of textile dyeing equipment, and discloses a low-bath-ratio laboratory jet dyeing proofing machine, which comprises a vertical cabinet, a horizontal cabinet, a horizontal cabinet and a horizontal cabinet, the liquid storage tank is mounted on one side of the vertical cabinet and is used for bearing required dye liquor; the dyeing tank is mounted at the top of the liquid storage tank and is used as a space for dyeing operation; the switch valve is mounted on one side of the dye tank and used for controlling extraction of the dye liquor in the liquor storage tank; the spray head is mounted on one side of the dyeing tank and is used for dyeing and spraying; and the bearing mechanism is mounted in the dyeing tank and is used for bearing samples to be dyed and uniformly distributing the samples. By accurately controlling the temperature, the flow rate and the liquid level, stable supply and uniform distribution of dye liquor in the dyeing process are guaranteed, meanwhile, the temperature is dynamically adjusted, and uneven dyeing caused by temperature fluctuation is avoided; the flow and liquid level management ensures that the concentration of the dye liquor is stable under a low bath ratio, so that the dyeing uniformity is improved, and the laboratory sample effect is close to that of actual production.

Description

Technical Field

[0001] The invention relates to the technical field of textile dyeing equipment, in particular to a low bath ratio laboratory jet dyeing proofing machine. Background Art

[0002] The sample dyeing machine is a small batch equipment used for laboratory dyeing. It is mainly used to simulate the dyeing effect in large-scale production to test and optimize the dyeing process parameters. It can accurately control the temperature, flow rate and dyeing time of the dye solution so that the dye solution can penetrate into the textile evenly, thus ensuring that the dyeing effect of the sample is close to the actual production. The equipment has a compact structure and is easy to operate. It is suitable for use in R&D and small batch samples, providing reliable data support for production.

[0003] In the dyeing process, uniformity and stability are key factors to ensure dyeing quality.

[0004] First, traditional dyeing equipment mostly uses high bath ratio dyeing, which not only consumes a lot of water resources and dyes, but also brings high costs and environmental pressures for wastewater treatment. At the same time, the high bath ratio dyeing process is difficult to simulate the actual effect of large-scale production under laboratory conditions, resulting in a gap between laboratory proofing results and production dyeing effects.

[0005] In addition, traditional dyeing often relies on chemicals to stabilize the dyeing effect, but this increases the pollutant content in the wastewater and has adverse effects on the environment. In terms of control systems, traditional equipment has insufficient control accuracy for temperature, flow and liquid level, making it difficult to adapt to complex and changing dyeing needs, resulting in an unstable dyeing process and affecting product quality consistency.

[0006] Therefore, the current dyeing process urgently needs a laboratory equipment that can achieve uniform dyeing under low bath ratio conditions while having precise control and environmental protection characteristics. Summary of the invention

[0007] In view of the shortcomings of the prior art, the present invention provides a low bath ratio laboratory jet dyeing proofing machine, which solves the problems of high time cost and severe environmental pollution in traditional dyeing experiments.

[0008] To achieve the above purpose, the present invention is implemented by the following technical scheme: a low bath ratio laboratory jet dyeing proofing machine, comprising:

[0009] The cabinet serves as the central carrier of the overall fine equipment control;

[0010] A liquid storage tank, which is installed on one side of the cabinet and is used to carry the required dye solution;

[0011] Dye tank, which is installed on the top of the liquid storage tank and is used for the space where dyeing operations are carried out;

[0012] A switch valve, which is installed on one side of the dye tank and is used to control the extraction of dye liquid from the storage tank;

[0013] A spray head, which is installed on one side of the dye tank and is used for dyeing spraying operations;

[0014] A carrying mechanism, which is installed inside the dyeing tank and is used to carry the required dyeing samples for uniform distribution;

[0015] The control panel is installed inside the cabinet and is used to control the equipment to perform fine operations through the PLC control module;

[0016] The expansion mechanism is installed inside and is used to expand the support part according to the required experimental sample size.

[0017] Preferably, the bearing mechanism includes a motor 1, which is installed on one side of the dye tank, a turntable is fixed to the output end of the motor 1, a column 1 distributed in a circular array is fixed to one side of the turntable, a baffle is fixed inside the dye tank, and columns 2 distributed in a staggered manner are fixed inside the dye tank.

[0018] Preferably, a water pump is provided inside the liquid storage tank, a delivery pipe 1 is fixed to the output end of the water pump, one end of the delivery pipe 1 is connected to the delivery pipe 2, one end of the delivery pipe 2 is provided with a delivery pipe 3, one end of the delivery pipe 3 is connected to the nozzle, a booster pump is provided on one side of the cabinet, and the output end of the booster pump is connected to the nozzle.

[0019] Preferably, the expansion mechanism includes a fixing ring 1, which is rotatably connected to the inside of the dye tank, a fixing ring 2 is fixed to one side of the fixing ring 1, a gear ring is rotatably provided inside the turntable, rotating columns distributed in a ring array are rotatably provided inside the dye tank, gears are fixed to the outer walls of the rotating columns, a motor 2 is arranged inside the dye tank, and one of the rotating columns is fixedly connected to the output end of the motor 2.

[0020] Preferably, racks are slidably disposed inside the first fixing ring and the second fixing ring, the racks are meshed with gears, and one side of the racks is connected to a sliding plate inside the dye tank.

[0021] Preferably, the PLC control module includes:

[0022] The main control module is used to perform sequential control of the dyeing process, handle all operating instructions and signal transmission, and has data storage function to save dyeing parameters and historical records;

[0023] The temperature control module is used to connect the temperature sensor, which is installed inside the dye tank. It adjusts the heater and cooler in the dye tank through PID control to achieve precise temperature increase and decrease to meet the temperature requirements during the dyeing process;

[0024] The liquid level control module is arranged inside the liquid storage tank and connected to a liquid level sensor, which is used to monitor the liquid level of the dye in real time, and to automatically replenish and drain the liquid to ensure accurate control of the amount of dye;

[0025] A flow metering control module is arranged inside the liquid storage tank and is used to monitor and adjust the dye liquid flow rate through a metering pump to ensure that the dye dosage meets the low bath ratio condition;

[0026] Fabric transmission control module, used to control the speed and tension of the lifting roller and guide roller;

[0027] The salt-free dyeing control module is arranged inside the liquid storage tank and is used to detect the pH value of the dye solution through a pH sensor and give corresponding required operation suggestions.

[0028] Preferably, the main control module includes a CPU processor and a data storage device for processing all operating instructions and signal transmission, and has a data storage function to save the temperature, time, flow and liquid level process parameters during the dyeing process, and supports historical recording and tracing of data.

[0029] Preferably, in the temperature control module, the PID control algorithm formula is:

[0030]

[0031] Where u(t) is the adjustment amount for controlling the output heating or cooling, e(t) is the difference between the set temperature and the actual temperature, and K p , K i and K d are the proportional, integral and differential coefficients respectively.

[0032] Preferably, in the flow metering control module, the flow control formula is used for control, which is as follows:

[0033] Q set =K f (F set -F act )

[0034] Among them, Q set is the desired flow control output, F set is the set target flow rate, F act is the actual flow rate, K f is the flow feedback gain;

[0035] The specific control process is as follows:

[0036] S1. Real-time detection of actual flow rate F through flow sensor act , and the set flow rate F set Compare and get the error;

[0037] S2, the error is fed back to the flow controller to adjust the flow output of the metering pump to ensure that the dye flow meets the low bath ratio condition;

[0038] S3. Set the flow rate change rate according to the dyeing process to achieve dynamic adjustment of the flow rate.

[0039] Preferably, in the salt-free dyeing control module, the suggestion after the pH value detection adopts the following feedback formula:

[0040] ΔpH=K p ·(pH set -pH act )

[0041] Among them, ΔpH is the amount of acid or alkali that needs to be added, pH set is the target pH value, pH act is the current actual pH value;

[0042] The specific steps are as follows:

[0043] S11, detecting the pH value of the dye solution in real time through a pH sensor, comparing it with the set target pH value, and calculating the error;

[0044] S22. According to the error, accurately measure the amount of acid or alkali to be added and display it on the control panel:

[0045] S33. The staff adjusts the pH of the dye solution to the set range based on the displayed data. If the error is large, the amount of acid or alkali added will be increased. If the error is small, the amount added will be gradually reduced to avoid over-adjustment.

[0046] Working principle: When dyeing experiments are required, the liquid storage tank is connected to various raw material tanks through its bottom pipe. At this time, the samples required for the experiment are sent into the dye tank through the dye tank switch door position, and are multi-dimensionally deformed through column 2. After that, a part of the corresponding sample is still in contact with column 1. At this time, the water pump in the liquid storage tank is started, and the sample is transported to the position of the nozzle through delivery pipes 1, 2 and 3 for spraying. At the same time, the pressure pump pressurizes the spraying intensity of the nozzle to make it spray more powerful. At the same time as spraying, motor 1 also starts to drive the turntable to rotate, so that the turntable drives column 1 with the turntable as the center to rotate. Rotation allows the sample to be transferred back and forth for uniform spray dyeing. In order to cope with samples of different sizes, we can drive motor two so that it can drive a rotating column and a gear to rotate. At this time, the gear will drive the gear ring to rotate under the restriction of the turntable, so that all the gears will rotate synchronously due to the rotation of the gear ring. At this time, each gear can drive the corresponding rack to slide. At this time, the sliding rack will run stably under the restriction of fixed ring one and fixed ring two, thereby driving the corresponding interactive section, so that the distance between column one and column two used to limit the sample changes, so as to adapt.

[0047] The present invention provides a low bath ratio laboratory jet dyeing proofing machine, which has the following beneficial effects:

[0048] 1. The present invention realizes stable supply and uniform distribution of dye solution in the dyeing process through precise temperature, flow rate and liquid level control. The PID temperature control module can dynamically adjust heating and cooling according to temperature requirements to ensure that the dyeing temperature is always kept in the ideal range, avoiding the problem of uneven dyeing caused by temperature fluctuations. At the same time, the precise management of flow rate and liquid level ensures that the dye solution concentration always meets the low bath ratio requirements, thereby effectively improving the dyeing uniformity, making the laboratory dyeing effect close to the actual production level, and providing accurate data reference for mass production.

[0049] 2. The present invention reduces the amount of dye solution used, greatly improves the resource utilization rate of the dyeing process, and combines with the salt-free dyeing control module to achieve precise control of acid and alkali through dynamic monitoring and feedback of pH value, thereby reducing dependence on chemicals such as salt. This not only effectively reduces the salt discharge in the dyeing wastewater, but also reduces water resource consumption, and has significant environmental advantages.

[0050] 3. The present invention has a built-in data storage function, which can record and save key parameters such as temperature, flow, liquid level and pH during the dyeing process to ensure the traceability of each experimental data. This recording function enables the operator to monitor the process status in real time, and also provides data support for subsequent process optimization and fault analysis.

[0051] 4. The present invention can flexibly adapt to samples of different sizes by automatically adjusting the distance between columns, thereby improving the applicability and operating efficiency of the equipment. This design reduces the tedious steps of manual adjustment and ensures stable support of the sample during the dyeing process, thereby improving the dyeing uniformity and experimental repeatability, and enabling the equipment to more efficiently adapt to the experimental needs of samples of multiple specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 A perspective view of the present invention;

[0053] Figure 2 It is a three-dimensional side view of the present invention;

[0054] Figure 3 Schematic diagram of the internal structure of the dyeing tank of the present invention

[0055] Figure 4 It is a schematic diagram of the expansion mechanism of the present invention;

[0056] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0057] Figure 6 It is a schematic diagram of the PLC module of the present invention.

[0058] Among them, 1. cabinet; 2. liquid storage tank; 3. dye tank; 4. switch valve; 5. nozzle; 6. motor 1; 7. turntable; 8. column 1; 9. baffle; 10. column 2; 11. delivery pipe 1; 12. delivery pipe 2; 13. delivery pipe 3; 14. pressure pump; 15. control panel; 16. fixing ring 1; 17. fixing ring 2; 18. turntable; 19. rack; 20. gear ring; 21. motor 2; 22. rotating column; 23. gear. DETAILED DESCRIPTION

[0059] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0060] Embodiment 1:

[0061] Please see attached Figure 1 -Attached Figure 3 The embodiment of the present invention provides a low bath ratio laboratory jet dyeing proofing machine, comprising:

[0062] Cabinet 1, which serves as the central carrier of the overall fine equipment control;

[0063] A liquid storage tank 2, which is installed on one side of the cabinet 1 and is used to carry the required dye solution;

[0064] A dye tank 3, which is installed on the top of the liquid storage tank 2 and is used for dyeing operations;

[0065] The switch valve 4 is installed on one side of the dye tank 3 and is used to control the extraction of dye liquid in the liquid storage tank 2;

[0066] A spray head 5, which is installed on one side of the dye tank 3 and is used for dyeing spraying operation;

[0067] A carrying mechanism, which is installed inside the dyeing tank 3 and is used to carry the required dyeing samples for uniform distribution;

[0068] A control panel 15, which is installed inside the cabinet 1 and is used to control the equipment to perform fine operations through a PLC control module;

[0069] An expansion mechanism, which is installed inside 3 and is used to expand the support part according to the required experimental sample size;

[0070] The bearing mechanism includes a motor 6, which is installed on one side of the dye tank 3. A turntable 7 is fixed to the output end of the motor 6, and a column 8 distributed in a ring array is fixed to one side of the turntable 7. A baffle 9 is fixed inside the dye tank 3, and staggered columns 10 are fixed inside the dye tank 3. A water pump is arranged inside the liquid storage tank 2, and a delivery pipe 11 is fixed to the output end of the water pump. One end of the delivery pipe 11 is connected to a delivery pipe 2 12, and one end of the delivery pipe 2 12 is arranged with a delivery pipe 3 13, and one end of the delivery pipe 3 13 is connected to the nozzle 5. A pressure pump 14 is arranged on one side of the cabinet 1, and the output end of the pressure pump 14 is connected to the nozzle 5.

[0071] Specifically, the liquid storage tank 2 is first connected with each raw material tank through its bottom pipe to ensure that the required dye can be smoothly transported to the dyeing system; when the system is ready, the operator sends the sample to be dyed into the dye tank 3 through the switch door of the dye tank 3; after the sample enters the dye tank, it is subjected to multi-dimensional deformation treatment through the column 2 10, so that the sample can maintain sufficient stretching and dye contact surface during the dyeing process, effectively avoiding the problem of local uneven dyeing; in addition, a part of the sample will also contact with the column 1 8 during the deformation process, providing further support and positioning for subsequent uniform dyeing; when the sample is ready, the water pump in the liquid storage tank 2 starts to start, and the dye is transported to the nozzle 5 through the delivery pipe 1 11, the delivery pipe 2 12 and the delivery pipe 3 13; in this process, the pressure pump 14 works synchronously to adjust the spraying intensity of the nozzle 5 so that the dye can be sprayed at a higher pressure and a stronger jet force is sprayed on the surface of the sample; this strong jet can ensure that the dye solution fully penetrates into the fiber of the sample, thereby achieving efficient and uniform dyeing effect; at the same time, the motor 6 is also started, driving the turntable 7 to rotate at a fixed speed; through the rotation of the turntable 7, and the motor 6 can move with the movable plate at the position of the turntable 7, the column 8 and the sample move in a circle around the central axis of the turntable 7, so that the sample can be dynamically and multi-angle dyed in the dye tank 3; the rotation of the turntable 7 not only enables the sample to move fully in the dyeing area, but also further enhances the uniformity of the jet dyeing, avoiding the problem of dyeing dead corners or uneven colors on the sample surface; through the above-mentioned coordinated operation, the dyeing device ensures that the sample is fully and evenly covered with dye solution during the dyeing process, thereby achieving the high-quality dyeing effect required by the experiment.

[0072] Please see attached Figure 4 -Attached Figure 5 The expansion mechanism includes a fixed ring 16, which is rotatably connected to the inside of the dye tank 3. A fixed ring 2 17 is fixed on one side of the fixed ring 16. A gear ring 20 is rotatably provided inside the turn rail 18. Rotating columns 22 distributed in a ring array are rotatably provided inside the dye tank 3. Gears 23 are fixed on the outer walls of the rotating columns 22. A motor 21 is provided inside the dye tank 3. A rotating column 22 is fixedly connected to the output end of the motor 21. Racks 19 are slidably provided inside the fixed ring 16 and the fixed ring 2 17. The racks 19 are meshed with the gears 23. One side of the rack 19 is connected to a sliding plate inside the dye tank 3.

[0073] Specifically, in order to adapt to samples of different sizes, the device can drive the rotating column 22 and the gear 23 to rotate synchronously by driving the motor 21; when the motor 21 is started, the rotating column 22 is transmitted to the gear 23, so that the gear 23 is meshed with the gear ring 20; the gear ring 20 is driven to rotate under the restriction of the turn rail 18, so that the movement of all gears 23 and the gear ring 20 is synchronized and unified; through this design, each gear 23 rotates evenly under the synchronous rotation of the gear ring 20, thereby driving the corresponding rack 19 to slide stably. In this process, the sliding rack 19 will be affected by the fixed ring 16 and the fixed ring 2 17. Effective constraints ensure the smoothness and accuracy of sliding, and avoid affecting the stable support of the sample due to movement deviation; the stable sliding of the rack 19 enables the corresponding interactive module to be adjusted smoothly, so that the distance between the column 1 8 and the column 2 10 that restricts the sample can be flexibly changed to adapt to samples of different sizes. Through the above design, not only the precise adaptation of the sample size is achieved, but also the structure is compact and the operation is flexible; the system can quickly adjust the column spacing without changing accessories, which is convenient for adapting to a variety of sample specifications, thereby improving the scope of application and work efficiency of the device and effectively meeting the staining needs of diverse samples in the laboratory.

[0074] Embodiment 2:

[0075] Please see attached Figure 4 , PLC control module includes:

[0076] The main control module is used to perform sequential control of the dyeing process, handle all operating instructions and signal transmission, and has data storage function to save dyeing parameters and historical records;

[0077] The temperature control module is used to connect the temperature sensor, which is installed inside the dye tank 3 and adjusts the heater and cooler in the dye tank 3 through PID control to achieve accurate temperature increase and decrease to meet the temperature requirements during the dyeing process;

[0078] A liquid level control module is arranged inside the liquid storage tank 2 and is connected to a liquid level sensor for real-time monitoring of the liquid level of the dye solution to automatically perform liquid replenishment and drainage to ensure accurate control of the amount of the dye solution;

[0079] A flow metering control module is arranged inside the liquid storage tank 2 and is used to monitor and adjust the dye liquor flow rate through a metering pump to ensure that the dye dosage meets the low bath ratio condition;

[0080] Fabric transmission control module, used to control the speed and tension of the lifting roller and guide roller;

[0081] The salt-free dyeing control module is arranged inside the liquid storage tank 2 and is used to detect the pH value of the dye solution through a pH sensor and give corresponding required operation suggestions;

[0082] The main control module includes a CPU processor and a data storage device, which are used to process all operation instructions and signal transmission, and has a data storage function to save the temperature, time, flow rate and liquid level process parameters during the dyeing process, and supports the historical recording and tracing of data;

[0083] In the temperature control module, the PID control algorithm formula is:

[0084]

[0085] Where u(t) is the adjustment amount for controlling the output heating or cooling, e(t) is the difference between the set temperature and the actual temperature, and K p , K i and K d are the proportional, integral and differential coefficients respectively;

[0086] In the flow metering control module, it is controlled by the flow control formula, as follows:

[0087] Q set =K f (F set -F act )

[0088] Among them, Q set is the desired flow control output, F set is the set target flow rate, F act is the actual flow rate, K f is the flow feedback gain;

[0089] The specific control process is as follows:

[0090] S1. Real-time detection of actual flow rate F through flow sensor act , and the set flow rate F set Compare and get the error;

[0091] S2, the error is fed back to the flow controller to adjust the flow output of the metering pump to ensure that the dye flow meets the low bath ratio condition;

[0092] S3, setting the flow rate change rate according to the dyeing process to achieve dynamic adjustment of the flow rate;

[0093] In the salt-free dyeing control module, the pH value is tested and the following feedback formula is used:

[0094] ΔpH=K p ·(pH set -pH act )

[0095] Among them, ΔpH is the amount of acid or alkali that needs to be added, pH set is the target pH value, pHact is the current actual pH value;

[0096] The specific steps are as follows:

[0097] S11, detecting the pH value of the dye solution in real time through a pH sensor, comparing it with the set target pH value, and calculating the error;

[0098] S22. According to the error, the amount of acid or alkali added is accurately measured and displayed at position 15 of the control panel:

[0099] S33. The staff adjusts the pH of the dye solution to the set range based on the displayed data. If the error is large, the amount of acid or alkali added will be increased. If the error is small, the amount added will be gradually reduced to avoid over-adjustment.

[0100] Specifically, the PLC control module of the device includes multiple submodules to achieve precise control and stable operation of the dyeing process. First, the main control module is responsible for executing the sequential control of the entire dyeing process through the CPU processor and data storage device, processing all operating instructions and signal transmission, and ensuring the coordinated work of each module. At the same time, the data storage function can save key parameters of the dyeing process such as temperature, time, flow rate and liquid level, and support historical records and data traceability for subsequent analysis and process reproduction. The introduction of this storage function helps to improve the stability and repeatability of the process;

[0101] The temperature control module adopts PID control algorithm to achieve accurate temperature rise and fall inside the dye tank 3. The core of PID control lies in the proportional, integral and differential calculation of the temperature difference. By automatically adjusting the heater and cooler, the temperature change of the dye solution is accurate and stable, ensuring accurate temperature control during the dyeing process, thereby improving the uniformity and effect of dyeing. PID control can effectively reduce temperature fluctuations through real-time monitoring and dynamic adjustment, meet the temperature sensitivity requirements of different dyes, and further improve the dyeing quality;

[0102] The liquid level control module is installed in the liquid storage tank 2 and is connected to a liquid level sensor. It monitors and adjusts the liquid level of the dye in real time through automatic liquid replenishment and drainage functions. The accuracy of liquid level control is a crucial link in low bath ratio dyeing. By real-time monitoring and maintaining liquid level stability, the concentration and proportion of the dye can be effectively guaranteed, thereby improving the reproducibility and consistency of the dyeing process and avoiding the problem of uneven dyeing due to liquid level fluctuations;

[0103] The flow metering control module is also installed in the liquid storage tank 2, and accurate dye liquid flow regulation is achieved through the metering pump and the flow control formula. The specific process is: first, the flow sensor detects the actual flow in real time, compares it with the set value to obtain the error, and feeds the error back to the flow controller to adjust the flow output of the metering pump to meet the dyeing requirements of low bath ratio. In addition, according to the setting of the dyeing process, the flow rate change rate can also be adjusted to achieve dynamic adjustment of the flow rate. This flow control scheme can ensure the accurate dosage and distribution of the dye liquid, meet the needs of low bath ratio dyeing, effectively save dye liquid resources and improve dyeing uniformity;

[0104] The fabric transmission control module is used to control the speed and tension of the lifting roller and the guide roller to ensure the stable transmission of the fabric during the dyeing process. By adjusting the speed and tension settings of the transmission system, the fabric can be evenly immersed in the dye solution, avoiding the stretching deformation of the fabric and the dyeing dead corners, thereby improving the uniformity and effect of dyeing;

[0105] The salt-free dyeing control module mainly focuses on the pH value of the dye liquor. The pH value of the dye liquor in the liquid storage tank 2 is detected by a pH sensor, and operational suggestions for adding acid or alkali are given according to the detection results. The specific feedback process is: the pH sensor detects the pH value of the dye liquor in real time, and compares it with the target pH value to obtain the error. According to the size of the error, the system displays the required amount of acid or alkali on the control panel 15. The staff manually adjusts the pH value according to this prompt to adjust the pH value to the target range. If the error is large, the amount of acid or alkali is increased, and if the error is small, it is gradually reduced to avoid over-adjustment. The introduction of this feedback mechanism not only makes the pH adjustment of the salt-free dyeing process more accurate, but also avoids the influence of pH fluctuations on the dyeing effect, making the dyeing process more environmentally friendly and stable.

[0106] Although 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 appended claims and their equivalents.

Claims

1. A low bath ratio laboratory jet dyeing proofing machine, characterized in that: include: A cabinet (1) serving as a central carrier for overall fine equipment control; A liquid storage tank (2), which is installed on one side of the cabinet (1) and is used to carry the required dye solution; A dye tank (3), which is installed on the top of the liquid storage tank (2) and is used as a space for dyeing operations; A switch valve (4) is installed on one side of the dye tank (3) and is used to control the extraction of dye liquid from the liquid storage tank (2); A spray head (5) is installed on one side of the dye tank (3) and is used for performing dyeing spraying operations; A carrying mechanism, which is installed inside the dyeing tank (3) and is used to carry the required dyeing samples for uniform distribution; A control panel (15) is installed inside the cabinet (1) and is used to control the equipment to perform fine operations through a PLC control module; The expansion mechanism is installed inside (3) and is used to expand the support part according to the required experimental sample size.

2. A low bath ratio laboratory jet dyeing proofing machine according to claim 1, characterized in that, The bearing mechanism comprises a motor (6) which is mounted on one side of a dyeing tank (3); a turntable (7) is fixed to the output end of the motor (6); columns (8) arranged in a circular array are fixed to one side of the turntable (7); a baffle (9) is fixed inside the dyeing tank (3); and columns (10) arranged in a staggered manner are fixed inside the dyeing tank (3).

3. A low bath ratio laboratory jet dyeing proofing machine according to claim 1, characterized in that, A water pump is arranged inside the liquid storage tank (2); a delivery pipe 1 (11) is fixed to the output end of the water pump; one end of the delivery pipe 1 (11) is connected to a delivery pipe 2 (12); one end of the delivery pipe 2 (12) is arranged with a delivery pipe 3 (13); one end of the delivery pipe 3 (13) is connected to the nozzle (5); a booster pump (14) is arranged on one side of the cabinet (1); the output end of the booster pump (14) is connected to the nozzle (5).

4. A low bath ratio laboratory jet dyeing proofing machine according to claim 1, characterized in that, The expansion mechanism comprises a fixing ring 1 (16), the fixing ring 1 (16) being rotatably connected inside the dyeing tank (3), a fixing ring 2 (17) being fixed on one side of the fixing ring 1 (16), a gear ring (20) being rotatably arranged inside the turning rail (18), rotating columns (22) being rotatably arranged inside the dyeing tank (3), gears (23) being fixed on the outer walls of the rotating columns (22), a motor 2 (21) being arranged inside the dyeing tank (3), and a rotating column (22) being fixedly connected to an output end of the motor 2 (21).

5. A low bath ratio laboratory jet dyeing proofing machine according to claim 4, characterized in that, A rack (19) is slidably disposed inside the first fixing ring (16) and the second fixing ring (17), the rack (19) is meshed with a gear (23), and one side of the rack (19) is connected to a sliding plate inside the dye tank (3).

6. A low bath ratio laboratory jet dyeing proofing machine according to claim 1, characterized in that, The PLC control module comprises: The main control module is used to perform sequential control of the dyeing process, handle all operating instructions and signal transmission, and has data storage function to save dyeing parameters and historical records; A temperature control module, which is used to connect to a temperature sensor and is installed inside the dyeing tank (3), and adjusts the heater and cooler inside the dyeing tank (3) through PID control to achieve accurate temperature increase and decrease to meet the temperature requirements during the dyeing process; A liquid level control module is arranged inside the liquid storage tank (2) and is connected to a liquid level sensor, and is used to monitor the liquid level of the dye solution in real time, so as to automatically replenish and drain the liquid and ensure accurate control of the amount of the dye solution; A flow metering control module is arranged inside the liquid storage tank (2) and is used to monitor and adjust the dye liquor flow rate through a metering pump to ensure that the dye dosage meets the low bath ratio condition; Fabric transmission control module, used to control the speed and tension of the lifting roller and guide roller; The salt-free dyeing control module is arranged inside the liquid storage tank (2) and is used to detect the pH value of the dye solution through a pH sensor and give corresponding required operation suggestions.

7. A low bath ratio laboratory jet dyeing proofing machine according to claim 6, characterized in that, The main control module includes a CPU processor and a data storage device for processing all operation instructions and signal transmission, and has a data storage function to save the temperature, time, flow rate and liquid level process parameters during the dyeing process, and supports the historical recording and tracing of data.

8. A low bath ratio laboratory jet dyeing proofing machine according to claim 6, characterized in that, In the temperature control module, the PID control algorithm formula is: Where u(t) is the adjustment amount for controlling the output heating or cooling, e(t) is the difference between the set temperature and the actual temperature, and K p , K i and K d are the proportional, integral and differential coefficients respectively.

9. A low bath ratio laboratory jet dyeing proofing machine according to claim 6, characterized in that, In the flow metering control module, the flow control formula is used for control, which is as follows: Q set =K f (F set -F aCt ) Among them, Q set is the desired flow control output, F set is the set target flow rate, F act is the actual flow rate, K f is the flow feedback gain; The specific control process is as follows: S1. Real-time detection of actual flow rate F through flow sensor act , and the set flow rate F set Compare and get the error; S2, the error is fed back to the flow controller to adjust the flow output of the metering pump to ensure that the dye flow meets the low bath ratio condition; S3. Set the flow rate change rate according to the dyeing process to achieve dynamic adjustment of the flow rate.

10. A low bath ratio laboratory jet dyeing proofing machine according to claim 6, characterized in that: In the salt-free dyeing control module, the pH value is detected and the following feedback formula is used: ΔpH=K p ·(pH set -pH act ) Among them, ΔpH is the amount of acid or alkali that needs to be added, pH set is the target pH value, pH act is the current actual pH value; The specific steps are as follows: S11, detecting the pH value of the dye solution in real time through a pH sensor, comparing it with the set target pH value, and calculating the error; S22, accurately measuring the amount of acid or alkali to be added according to the error and displaying it on the control panel (15); S33. The staff adjusts the pH of the dye solution to the set range based on the displayed data. If the error is large, the amount of acid or alkali added will be increased. If the error is small, the amount added will be gradually reduced to avoid over-adjustment.

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