Loose fiber dyeing raw material coloring point testing equipment and method thereof

Abstract

The invention relates to the technical field of textile printing and dyeing, and discloses a loose fiber dyeing raw material coloring point testing device and a method thereof.The device comprises a dye vat body and a control panel, a top cover is arranged at the top of the dye vat body, and an uncovering mechanism is arranged between the dye vat body and the top cover; the dye vat comprises a dye vat body, a material vat mixing mechanism is arranged on the outer side of the dye vat body, a center water spraying column is arranged in the dye vat body, a center rod is arranged in the center water spraying column, and the top of the center rod is in threaded connection with a detachable bolt. The method comprises the following steps: charging, setting parameters, injecting a mixed additive, starting cyclic heating, automatically sampling, discharging liquid, taking materials and analyzing color difference. Through centralized program control of the control panel on the air cylinder, the dye liquor circulation assembly, the automatic material receiving and sampling controller and the water inlet and drainage system, full-process automatic operation from raw material cylinder filling, dye liquor circulation, multi-period sampling to equipment cleaning is achieved, and the dyeing process does not need to be manually intervened.

Description

Technical Field

[0001] The present invention relates to the technical field of textile printing and dyeing, and particularly to an equipment and method for testing the coloring points of loose fiber dyeing raw materials. Background Technique

[0002] Testing the coloring points of loose fiber dyeing raw materials refers to determining the dyeing effects of loose fiber raw materials under different process parameters (such as heating rate, holding time) in a simulated industrial dyeing environment (temperature, pressure, dye liquor circulation) through specific equipment and methods, so as to determine the key process nodes (i.e., "coloring points") for achieving uniform and stable coloring.

[0003] In the existing loose fiber dyeing process, the coloring uniformity directly affects the quality of the finished product. If there are differences between the coloring points of the raw materials and the coloring points set in the production process, it is extremely easy to cause coloring unevenness problems and affect the product quality. At the same time, the raw materials used for loose fiber dyeing will have different coloring points due to different manufacturers and different raw material types. The traditional method for testing the coloring points of loose fiber dyeing relies on manual sampling at regular intervals, and has the following defects: manual operation leads to poor sampling time and temperature accuracy, low data reliability; manual sampling under high temperature and high pressure environments has safety hazards; it is difficult to achieve synchronous monitoring of multiple time points during the dynamic dyeing process.

[0004] Therefore, the present invention proposes an equipment and method for testing the coloring points of loose fiber dyeing raw materials to solve the deficiencies of the existing technology. Summary of the Invention

[0005] In view of the deficiencies of the existing technology, the present invention provides an equipment and method for testing the coloring points of loose fiber dyeing raw materials, which solves the problems of low accuracy of manual sampling, great safety hazards, and difficulty in synchronous monitoring of multiple time points in traditional loose fiber dyeing tests.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: An equipment for testing the coloring points of loose fiber dyeing raw materials includes a dye vat body and a control panel. A top cover is provided at the top of the dye vat body, an opening mechanism is provided between the dye vat body and the top cover, a material tank mixing mechanism is provided outside the dye vat body, a central water spraying column is provided inside the dye vat body, a central rod is provided inside the central water spraying column, a detachable bolt is threadedly connected to the top of the central rod, a loose fiber yarn cage is installed inside the dye vat body, a dye liquor circulation component is provided at the bottom of the dye vat body, a material receiving mechanism is provided outside the dye vat body, a heating component is provided at the outer side of the dye vat body near the bottom, a heating, cooling water and drainage component is provided at the bottom of the dye vat body, a first water inlet and drainage component is provided at the outer side of the dye vat body near the bottom, a second water inlet and drainage component is provided at the bottom of the material tank mixing mechanism, and a plurality of fixed bases are equidistantly distributed at the bottom of the dye vat body; The material receiving mechanism includes a fixed shell and a floating color receiving pipe. The fixed shell is installed on the outside of the dye vat body. The floating color receiving pipe is connected to the dye vat body. An automatic material receiving sampling controller is provided on the outside of the floating color receiving pipe. Motor 2 is installed on the inner bottom wall of the fixed shell. The output end of motor 2 is fixedly connected to a material receiving rotary disk. A plurality of material receiving test tubes are clamped on the top of the material receiving rotary disk.

[0007] Preferably, the cover opening mechanism includes a connecting frame, which is fixedly connected to the top of the top cover, and the outer side of the dye vat body is rotatably connected to a cylinder, the output end of the cylinder is rotatably connected to the end of the connecting frame away from the top cover, and the outer side of the dye vat body is fixedly connected to a connecting rod, and the connecting rod is rotatably connected to the connecting frame.

[0008] Preferably, the material cylinder mixing mechanism includes a material cylinder body, a motor 1 is installed on the top of the material cylinder body, a mixing rod is fixedly connected to the output end of the motor 1, and the bottom side of the material cylinder body is connected to the dye vat body through a liquid inlet pipe, and a liquid inlet controller is provided on the outside of the liquid inlet pipe.

[0009] Preferably, the second inlet and outlet assembly includes a cylinder water inlet pipe, the cylinder water inlet pipe is connected to the bottom of the cylinder body, a cylinder water inlet controller is installed on the outside of the cylinder water inlet pipe, the cylinder water inlet pipe is connected to the cylinder drainage pipe, and a cylinder drainage controller is provided on the outside of the cylinder drainage pipe.

[0010] Preferably, the heating and cooling water drainage assembly includes a dye vat heating and cooling water drainage pipe, the dye vat heating and cooling water drainage pipe is connected to the bottom of the dye vat body, and a dye vat heating and cooling water drainage controller is provided on the outside of the dye vat heating and cooling water drainage pipe.

[0011] Preferably, the dye liquid circulation component includes a motor three and a dye circulation pump, the motor three is installed between multiple fixed bases, the output end of the motor three is connected to the dye circulation pump, the outlet of the dye circulation pump is connected to the bottom of the central water spray column through a pipe, and the inlet of the dye circulation pump is connected to the bottom of the dye vat body through a return liquid pipe.

[0012] Preferably, the heating component includes a direct heating pipe, which is connected to the bottom of the outer side of the dye vat body, and the outer side of the direct heating pipe is connected to an indirect heating pipe, and the outer side of the direct heating pipe is provided with a dye vat direct heating valve controller, and the outer side of the indirect heating pipe is provided with a dye vat indirect heating valve controller.

[0013] Preferably, the water inlet and outlet assembly includes a dye vat drainage pipe, the dye vat drainage pipe is connected to the outer bottom of the dye vat body, the outer side of the dye vat drainage pipe is connected to the dye vat water inlet pipe, the outer side of the dye vat drainage pipe is provided with a dye vat drainage controller, and the outer side of the dye vat water inlet pipe is provided with a dye vat water inlet controller.

[0014] Preferably, the control panel is connected to the cylinder, motor 1, liquid inlet controller, automatic material sampling controller, motor 2, motor 3, dye circulation pump, dye vat direct heating valve controller, dye vat indirect heating valve controller, dye vat heating and cooling water drainage controller, material vat drainage controller, dye vat drainage controller, dye vat water inlet controller and material vat water inlet controller.

[0015] The present invention also provides a method for testing color points of bulk fiber dyeing raw materials, comprising the following steps: S1. The control panel activates the cylinder of the lid-opening mechanism, driving the top lid open. The loose fiber material is loaded into the loose fiber yarn cage inside the dye vat. The top lid is then tightened with removable bolts and closed. S2. Edit the coloring point test process parameters on the control panel, including heating rate, target temperature, and holding time. S3 add dyeing auxiliaries to the cylinder mixing mechanism of the cylinder body, start the motor to drive the mixing rod to stir and mix, and the mixture is injected into the dye vat body through the liquid inlet pipe through the liquid inlet controller; S4. Start the dye circulation assembly's motor 3 and the dye circulation pump, allowing the dye to flow vertically through the loose-fiber yarn cage via the central water jet. Simultaneously, the dye vat direct heating valve controller and the dye vat indirect heating valve controller control the heating of the direct heating pipe and the indirect heating pipe, respectively, to maintain a stable dye solution temperature. S5. After the holding time is reached, the automatic sampling controller starts the second motor to drive the rotary disk to switch the material tube, and the dye sample is exported through the floating color access pipe, and the sampling information is fed back to the control panel; S6 control panel prompts the test is complete, the dye vat heating cooling water drainage controller starts the dye vat heating cooling water drainage pipe to discharge cooling water, the dye vat drainage controller controls the dye vat drainage pipe to discharge waste liquid; S7. Then open the top cover and take out the loose fiber yarn cage, and confirm the coloring point according to the color difference and coloring rate of the sample in the material test tube.

[0016] The present invention provides a device and method for testing the color points of loose fiber dyeing materials. It has the following beneficial effects: 1. Through the centralized program control of the cylinder, dye liquor circulation component, automatic material receiving and sampling controller, and water inlet and drainage system by the control panel of the present invention, the full-process automation operation from raw material loading into the cylinder, dye liquor circulation, multi-period sampling to equipment cleaning is realized, without manual intervention in the dyeing process, significantly improving the test efficiency and data reliability.

[0017] 2. Through the coordinated control of the control panel with the direct heating valve controller of the dyeing cylinder, the indirect heating valve controller of the dyeing cylinder, and the material receiving rotating disk of the present invention, the direct heating pipe is quickly heated to the target temperature, the indirect heating pipe maintains a constant temperature, the material receiving rotating disk automatically switches the material receiving test tubes at preset intervals, and the floating color receiving pipeline quantitatively exports the dye liquor samples, realizing the isolated storage and accurate analysis of multi-period samples.

[0018] 3. Through the hollow grid structure (grid aperture 0.3 - 0.5 cm) of the loose fiber yarn cage and the high-pressure jet penetration design of the central water spray column of the present invention, only 300 - 1000 g of loose fiber raw materials are required to simulate the industrial-level dyeing effect, and it is applicable to various raw material types such as cotton, linen, and chemical fibers, breaking through the dependence of traditional equipment on a large sample size. Brief Description of the Drawings

[0019] Figure 1 is a perspective view of the present invention; Figure 2 is a side view of the present invention; Figure 3 is a schematic structural diagram of the fixed shell of the present invention; Figure 4 is a schematic internal structure diagram of the dyeing cylinder body of the present invention; Figure 5 is of the present invention Figure 4 enlarged view of A in; Figure 6 is a schematic structural diagram of the material cylinder mixing mechanism of the present invention; Figure 7 is a schematic structural diagram of the material receiving mechanism of the present invention; Figure 8 is a flowchart of the method for testing the coloring points of the loose fiber dyeing raw materials of the present invention.

[0020] Among them, 1. Dyeing vat body; 2. Top cover; 3. Open cover mechanism; 301. Cylinder; 302. Connecting frame; 303. Connecting rod; 4. Material cylinder mixing mechanism; 401. Material cylinder body; 402. Motor 1; 403. Mixing rod; 404. Liquid inlet pipe; 405. Liquid inlet controller; 5. Central water spray column; 6. Central rod; 7. Loose fiber yarn cage; 8. Removable bolt; 9. Material receiving mechanism; 901. Fixed shell; 902. Floating color receiving pipeline; 903. Automatic material receiving and sampling controller; 904. Motor 2; 905. Material receiving rotating disk; 906. Material receiving test tube; 10. Motor 3; 11. Dye circulation pump; 12. Direct heating pipe; 13. Dyeing vat direct heating valve controller; 14. Indirect heating pipe; 15. Dyeing vat indirect heating valve controller; 16. Dyeing vat heating cooling water drainage pipeline; 17. Dyeing vat heating cooling water drainage controller; 18. Material cylinder drainage pipeline; 19. Material cylinder drainage controller; 20. Dyeing vat drainage pipeline; 21. Dyeing vat drainage controller; 22. Dyeing vat water inlet pipeline; 23. Dyeing vat water inlet controller; 24. Fixed base; 25. Control panel; 26. Material cylinder water inlet pipeline; 27. Material cylinder water inlet controller; 28. Return liquid pipe. Detailed implementation manner

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings of the present invention specification. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the protection scope of the present invention.

[0022] Please refer to the attached Figure 1 、attached Figure 2 and attached Figure 4 . The embodiments of the present invention provide a loose fiber dyeing raw material coloring point testing device, including a dyeing vat body 1 and a control panel 25. A top cover 2 is provided on the top of the dyeing vat body 1. A central water spray column 5 is provided inside the dyeing vat body 1. A central rod 6 is provided inside the central water spray column 5. A removable bolt 8 is threadedly connected to the top of the central rod 6. A loose fiber yarn cage 7 is installed inside the dyeing vat body 1. A plurality of fixed bases 24 are equidistantly distributed at the bottom of the dyeing vat body 1.

[0023] Specifically, through the cooperation of the central water spray column 5 and the loose fiber yarn cage 7, with multi-directional spray holes inside the central water spray column 5, the dye liquor is vertically sprayed onto the surface of the loose fiber yarn cage 7 to simulate the industrial dyeing scouring environment, achieving all-round penetration and uniform coloring of the loose fiber raw materials; through the cooperation of the loose fiber yarn cage 7 and the detachable bolts 8, the loose fiber yarn cage 7 is fixed to the top of the central rod 6 by the detachable bolts 8, and the bolt pre-tightening force locks the bottom flange of the yarn cage to ensure that the yarn cage has no displacement or looseness during the scouring process of the dye liquor, realizing the stable loading of the loose fiber raw materials and the test reliability. Through the cooperation of the fixed base 24 and the dyeing vat body 1, multiple fixed bases 24 are equidistantly distributed to support the dyeing vat body 1, and a shock-absorbing rubber layer is provided at the bottom of the base to absorb the vibration energy during the operation of the dye circulation pump 11 and the motor three 10, avoiding the deviation of test data caused by equipment resonance. Through the cooperation of the central rod 6 and the central water spray column 5, the central rod 6 penetrates through the inside of the central water spray column 5 to form a double-layer dye liquor diversion channel, and the dye liquor is laterally sprayed from the central water spray column 5 after being guided by the bottom of the central rod 6, enhancing the penetration of the dye liquor into the loose fiber yarn cage 7 and improving the coloring efficiency. Through the cooperation of the loose fiber yarn cage 7 and the dyeing vat body 1, the loose fiber yarn cage 7 adopts a hollow grid structure, and the grid size of the loose fiber yarn cage 7 is 0.3 - 0.5 cm, and the grid aperture is smaller than the minimum particle size of the loose fiber raw materials to prevent the raw materials from leaking out; through the cooperation of the detachable bolts 8 and the central rod 6, the threaded end of the detachable bolt 8 is embedded in the pre-set threaded hole at the top of the central rod 6, and the bolt head presses the top flange of the loose fiber yarn cage 7 to form an axial locking force to ensure the structural stability of the yarn cage under the impact of high-pressure dye liquor.

[0024] Please refer to the attached Figure 2 , the attached Figure 3 and the attached Figure 7 , a material receiving mechanism 9 is arranged on the outer side of the dyeing vat body 1. The material receiving mechanism 9 includes a fixed shell 901 and a floating color receiving pipeline 902. The fixed shell 901 is installed on the outer side of the dyeing vat body 1, the floating color receiving pipeline 902 is communicated with the dyeing vat body 1, an automatic material receiving and sampling controller 903 is arranged on the outer side of the floating color receiving pipeline 902, a motor two 904 is installed on the inner bottom wall of the fixed shell 901, the output end of the motor two 904 is fixedly connected with a material receiving rotating disk 905, and a plurality of material receiving test tubes 906 are clamped on the top of the material receiving rotating disk 905.

[0025] Specifically, through the cooperation of the floating color extraction pipeline 902 and the material receiving rotating disk 905, the floating color extraction pipeline 902 directionally exports the dyestuff floating color sample, and the material receiving rotating disk 905 periodically switches the material receiving test tubes 906 to realize the automatic sub-packaging and isolated storage of the dyestuff samples in multiple time periods; through the cooperation of the automatic material receiving and sampling controller 903 and the second motor 904, the automatic material receiving and sampling controller 903 triggers the second motor 904 to rotate the material receiving rotating disk 905 at a preset time interval, and the material receiving test tubes 906 are successively aligned with the outlet of the floating color extraction pipeline 902 to realize unattended continuous sampling; through the cooperation of the material receiving rotating disk 905 and the material receiving test tubes 906, the top card slots of the material receiving rotating disk 905 are distributed in an array, and the material receiving test tubes 906 are vertically clamped into the card slots to ensure that the test tubes do not overturn or leak during rotation; through the cooperation of the fixed shell 901 and the floating color extraction pipeline 902, the fixed shell 901 hermetically wraps the material receiving rotating disk 905 and the material receiving test tubes 906 to isolate external pollution and ensure the accuracy of the sample test data; through the cooperation of the transparent material of the material receiving test tubes 906 and the scale markings, precision scale lines are printed on the side walls of the material receiving test tubes 906 to facilitate direct reading of the sample volume and color change by manual or optical detection equipment.

[0026] Please refer to the appendix Figure 1 and the appendix Figure 3 As shown in the figure, between the dye vat body 1 and the top cover 2, there is an opening mechanism 3. The opening mechanism 3 includes a connecting frame 302. The connecting frame 302 is fixedly connected to the top of the top cover 2. A cylinder 301 is rotatably connected to the outside of the dye vat body 1. The output end of the cylinder 301 is rotatably connected to one end of the connecting frame 302 away from the top cover 2. An adapter rod 303 is fixedly connected to the outside of the dye vat body 1. The adapter rod 303 is rotatably connected to the connecting frame 302.

[0027] Specifically, through the cooperation of the cylinder 301 and the connecting frame 302, the output end of the cylinder 301 pushes the connecting frame 302 to rotate around the axis of the adapter rod 303, driving the top cover 2 to open at a constant angular velocity, realizing the stable lifting and lowering of the top cover 2, and avoiding equipment collision or sealing surface wear caused by uneven force during manual opening; through the cooperation of the adapter rod 303 and the connecting frame 302, the adapter rod 303 restricts the unidirectional rotation of the connecting frame 302 in the vertical plane, eliminating the risk of lateral offset during the opening process of the top cover 2 and ensuring the alignment accuracy of the sealing surfaces of the top cover 2 and the dye vat body 1; through the lever-type structural design of the connecting frame 302, the connecting frame 302 converts the linear thrust of the cylinder 301 into the rotational torque of the top cover 2, amplifying the mechanical gain, reducing the load power requirement of the cylinder 301, and realizing low-energy consumption and efficient opening of the cover.

[0028] Please refer to the appendix Figure 1 and the appendix Figure 6, a material cylinder mixing mechanism 4 is arranged on the outer side of the dyeing vat body 1. The material cylinder mixing mechanism 4 includes a material cylinder body 401. A motor 402 is installed at the top of the material cylinder body 401. The output end of the motor 402 is fixedly connected with a mixing rod 403. One side of the bottom of the material cylinder body 401 is communicated with the dyeing vat body 1 through a liquid inlet pipe 404. A liquid inlet controller 405 is arranged on the outer side of the liquid inlet pipe 404.

[0029] Specifically, through the cooperation of the motor 402 and the mixing rod 403, the motor 402 drives the mixing rod 403 to rotate at a high speed. The spiral blades on the surface of the mixing rod 403 cut the interface between the dyeing auxiliary and the solvent, accelerating the dissolution and dispersion of the auxiliary, and realizing the rapid homogenization mixing of the dye liquor mother liquor; through the cooperation of the conical bottom of the material cylinder body 401 and the liquid inlet pipe 404, the inner wall of the bottom of the material cylinder body 401 is inclined. The mixed liquid converges towards the liquid inlet pipe 404 under the action of gravity, avoiding the precipitation and residue of the auxiliary, and ensuring that the whole amount of the mixed liquid is transported to the dyeing vat body 1; the liquid inlet controller 405 dynamically adjusts the injection flow rate of the mixed liquid according to the real-time dye liquor demand of the dyeing vat body 1 to ensure the concentration consistency of the dyeing process.

[0030] Please refer to the appendix Figure 1 and appendix Figure 2 and appendix Figure 4 and appendix Figure 6 , a second inlet and drain assembly is arranged at the bottom of the material cylinder mixing mechanism 4. The second inlet and drain assembly includes a material cylinder water inlet pipe 26. The material cylinder water inlet pipe 26 is communicated at the bottom of the material cylinder body 401. A material cylinder water inlet controller 27 is installed on the outer side of the material cylinder water inlet pipe 26. The material cylinder water inlet pipe 26 is communicated with a material cylinder drain pipe 18. A material cylinder drain controller 19 is arranged on the outer side of the material cylinder drain pipe 18.

[0031] Specifically, through the cooperation of the material cylinder water inlet pipe 26 and the material cylinder water inlet controller 27, the material cylinder water inlet pipe 26 injects cleaning water into the bottom of the material cylinder body 401. The material cylinder water inlet controller 27 adjusts the water inlet speed according to the preset flow rate to realize the rapid flushing and cleaning of the residual auxiliary on the inner wall of the material cylinder body 401 and the mixing rod 403; through the cooperation of the material cylinder drain pipe 18 and the material cylinder drain controller 19, the material cylinder drain pipe 18 directs and discharges the cleaning waste water. The material cylinder drain controller 19 automatically opens and closes the drain port according to the liquid level signal of the material cylinder body 401 to prevent the backflow or overflow of the waste liquid from polluting the equipment.

[0032] Please refer to the appendix Figure 1 and appendix Figure 4 , a heating and cooling water drain assembly is arranged at the bottom of the dyeing vat body 1. The heating and cooling water drain assembly of the dyeing vat includes a dyeing vat heating and cooling water drain pipe 16. The dyeing vat heating and cooling water drain pipe 16 is communicated with the bottom of the dyeing vat body 1. A dyeing vat heating and cooling water drain controller 17 is arranged on the outer side of the dyeing vat heating and cooling water drain pipe 16.

[0033] Specifically, through the cooperation of the dyeing vat heating cooling water drainage pipe 16 and the dyeing vat heating cooling water drainage controller 17, the dyeing vat heating cooling water drainage controller 17 adjusts the drainage speed according to the temperature condition inside the dyeing vat body 1, realizing the rapid discharge of cooling water and avoiding the influence of residual water on the temperature control accuracy of subsequent dyeing tests.

[0034] Please refer to the appendix Figure 1 , the appendix Figure 2 and the appendix Figure 4 , a dye liquor circulation component is arranged at the bottom of the dyeing vat body 1. The dye liquor circulation component includes a motor three 10 and a dye circulation pump 11. The motor three 10 is installed between a plurality of fixed bases 24. The output end of the motor three 10 is connected to the dye circulation pump 11. The outlet of the dye circulation pump 11 is communicated with the bottom of the central water spray column 5 through a pipeline, and the inlet of the dye circulation pump 11 is communicated with the bottom of the dyeing vat body 1 through a return pipe 28.

[0035] Specifically, through the cooperation of the motor three 10 and the dye circulation pump 11, the motor three 10 drives the dye circulation pump 11 to operate in a variable frequency speed regulation mode, dynamically adjusting the dye liquor circulation flow according to the dyeing stage to realize the precise control of the dye liquor penetration rate in the loose fiber yarn cage 7; through the cooperation of the diversion structure of the central water spray column 5 and the outlet pipeline of the dye circulation pump 11, the dye liquor after being pressurized by the dye circulation pump 11 forms a high-pressure vertical jet flow through the multi-stage diversion channels inside the central water spray column 5, uniformly penetrating the mesh pores of the loose fiber yarn cage 7 to improve the color uniformity of the loose fiber raw materials; through the cooperation of the return pipe 28 and the bottom of the dyeing vat body 1, a multi-layer filter screen is arranged at the inlet end of the return pipe 28. After the fiber impurities in the circulating dye liquor are intercepted, the clean dye liquor flows back to the inlet of the dye circulation pump 11 to avoid impurities blocking the pump body or the central water spray column 5; through the cooperation of the shock absorption groove of the fixed base 24 and the motor three 10, the shock absorption groove inside the fixed base 24 absorbs the vibration energy during the operation of the motor three 10, reducing the pressure fluctuation during the dye liquor circulation process and ensuring the stability of the dyeing test data.

[0036] Please refer to the appendix Figure 1 and the appendix Figure 4 , a heating component is arranged at the outer side and near the bottom of the dyeing vat body 1. The heating component includes a direct heating pipe 12. The direct heating pipe 12 is communicated with the outer side and near the bottom of the dyeing vat body 1. An indirect heating pipe 14 is communicated with the outer side of the direct heating pipe 12. A dyeing vat direct heating valve controller 13 is arranged on the outer side of the direct heating pipe 12, and a dyeing vat indirect heating valve controller 15 is arranged on the outer side of the indirect heating pipe 14.

[0037] Specifically, by cooperating the direct heating pipe 12 with the dyeing vat body 1, the high-temperature heat medium in the direct heating pipe 12 contacts the dyeing vat body 1, improving the heat conduction efficiency and realizing the rapid heating of the dye liquor to the process target temperature; by cooperating the indirect heating pipe 14 with the dyeing vat body 1, the coloring difference of the loose fiber raw materials caused by the temperature gradient is eliminated; through the coordinated adjustment of the dyeing vat direct heating valve controller 13 and the dyeing vat indirect heating valve controller 15, the dyeing vat direct heating valve controller 13 is fully opened at the initial stage of dyeing to achieve rapid heating, and the dyeing vat indirect heating valve controller 15 finely adjusts the heat medium flow rate during the heat preservation stage to maintain the temperature fluctuation of the dye liquor ≤ ±0.5 °C, ensuring the process stability.

[0038] Please refer to the appendix Figure 2 and the appendix Figure 4 As shown in the figure, a first water inlet and drainage assembly is arranged at the outer side and near the bottom of the dyeing vat body 1. The first water inlet and drainage assembly includes a dyeing vat drainage pipe 20, the dyeing vat drainage pipe 20 communicates with the outer side and near the bottom of the dyeing vat body 1, a dyeing vat water inlet pipe 22 is communicated with the outer side of the dyeing vat drainage pipe 20, a dyeing vat drainage controller 21 is arranged on the outer side of the dyeing vat drainage pipe 20, and a dyeing vat water inlet controller 23 is arranged on the outer side of the dyeing vat water inlet pipe 22.

[0039] Specifically, by cooperating the dyeing vat drainage pipe 20 with the dyeing vat drainage controller 21, the dyeing vat drainage controller 21 adjusts the drainage speed in stages according to the liquid level signal inside the dyeing vat body 1, realizing the rapid discharge of the waste liquid after the dyeing test and avoiding the deviation of the test data caused by the residual dye liquor.

[0040] By cooperating the dyeing vat water inlet pipe 22 with the dyeing vat water inlet controller 23, the dyeing vat water inlet controller 23 injects cleaning water into the bottom of the dyeing vat body 1 at a preset flow rate, and the water flow flushes the inner wall of the dyeing vat body 1 and the residual dye on the loose fiber yarn cage 7 in the reverse direction, ensuring the equipment cleanliness and test repeatability.

[0041] Please refer to the appendix Figure 1 As shown in the figure, the control panel 25 is connected to the air cylinder 301, the first motor 402, the liquid inlet controller 405, the automatic feeding and sampling controller 903, the second motor 904, the third motor 10, the dye circulation pump 11, the dyeing vat direct heating valve controller 13, the dyeing vat indirect heating valve controller 15, the dyeing vat heating and cooling water drainage controller 17, the material cylinder drainage controller 19, the dyeing vat drainage controller 21, the dyeing vat water inlet controller 23 and the material cylinder water inlet controller 27.

[0042] Specifically, for the start-stop and stroke control of the air cylinder 301: The control panel 25 presets the opening angle parameter of the top cover 2, and adjusts the lifting speed of the top cover 2 through the feedback of the telescopic amount of the air cylinder 301 to ensure the accurate alignment of the sealing surface; For the rotation speed and rotation direction control of the first motor 402: The control panel 25 automatically matches the rotation speed and the positive and negative rotation cycle of the mixing rod 403 according to the type of dyeing assistant (powder / liquid) to avoid the precipitation or caking of the assistant; Flow and timing control of the liquid inlet controller 405: The liquid level sensor of the cylinder mixing mechanism 4 is linked to the control panel 25, triggering the liquid inlet controller 405 to inject the mixed liquid in gradients to ensure the consistency of the dye solution concentration ratio; Timing trigger of the automatic material receiving and sampling controller 903: The control panel 25 sets the sampling interval (such as every 5 minutes), and the automatic material receiving and sampling controller 903 synchronously triggers the motor two 904 to rotate the material receiving rotating disk 905 to complete multi-period sample collection; Frequency conversion linkage of the motor three 10 and the dye circulation pump 11: The control panel 25 automatically adjusts the speed of the motor three 10 according to the dyeing stage (penetration / heat preservation) to match the output pressure of the dye circulation pump 11, realizing the dynamic circulation and penetration of the dye solution; Temperature control coordination of the direct heating valve controller 13 and the indirect heating valve controller 15 of the dyeing vat: The control panel 25 switches the heat medium flow rates of the direct heating pipe 12 and the indirect heating pipe 14 in stages based on the data of the temperature sensor inside the dyeing vat body 1 to balance the heating rate and the constant temperature accuracy; Process linkage of the dyeing vat heating and cooling water drainage controller 17, the cylinder drainage controller 19, the dyeing vat drainage controller 21, and the dyeing vat water inlet controller 23: The dyeing vat heating and cooling water drainage controller 17 automatically triggers drainage during the cooling stage; The cylinder drainage controller 19 is started synchronously when the cylinder mixing mechanism 4 is cleaned; The dyeing vat drainage controller 21 and the dyeing vat water inlet controller 23 are linked to realize automatic water injection and cleaning after drainage, reducing manual intervention.

[0043] User interface and data recording: The control panel 25 integrates a touch screen, supports the setting of process parameters (temperature, time, speed, etc.), and real-time displays the operating status and historical data curves, and supports the export of test reports.

[0044] Please refer to the appendix Figure 8 For this, the present invention also provides a method for testing the coloring points of the raw materials for loose fiber dyeing, including the following steps: S1. Start the cylinder 301 of the cover opening mechanism 3 through the control panel 25, drive the top cover 2 to open, load the loose fiber raw materials into the loose fiber yarn cage 7 inside the dyeing vat body 1, and close the top cover 2 after pressing and fixing with the detachable bolt 8; S2. Edit the coloring point test process parameters on the control panel 25, including the heating rate, the target temperature, and the heat preservation time; S3. Add dyeing assistants to the cylinder body 401 of the cylinder mixing mechanism 4, start the motor one 402 to drive the mixing rod 403 to stir and mix, and inject the mixed liquid into the dyeing vat body 1 through the liquid inlet controller 405 via the liquid inlet pipe 404; S4. Start the motor three 10 of the dye solution circulation component and the dye circulation pump 11, so that the dye solution vertically flushes the loose fiber yarn cage 7 through the central water spraying column 5. At the same time, control the heating of the direct heating pipe 12 and the indirect heating pipe 14 respectively through the dye vat direct heating valve controller 13 and the dye vat indirect heating valve controller 15 to maintain the stability of the dye solution temperature; S5. After reaching the heat preservation time, the automatic feeding and sampling controller 903 starts the motor two 904 to drive the feeding rotary disk 905 to switch the feeding test tube 906, exports the dye solution sample through the floating color extraction pipeline 902, and feeds back the sampling information to the control panel 25; S6. The control panel 25 prompts that the test is completed. The dye vat heating cooling water drainage controller 17 starts the dye vat heating cooling water drainage pipeline 16 to drain the cooling water, and the dye vat drainage controller 21 controls the dye vat drainage pipeline 20 to discharge the waste liquid; S7. Then open the top cover 2 to take out the loose fiber yarn cage 7, and confirm the coloring points according to the color difference and coloring rate of the sample in the feeding test tube 906.

[0045] Specifically: Step S1: Loading and fixing of loose fiber raw materials Top cover opening operation: Select the "open cover" instruction through the control panel 25. The output end of the air cylinder 301 pushes the connecting frame 302 to rotate around the axis of the connecting rod 303, and the top cover 2 is lifted at a constant angular velocity to expose the inside of the dye vat body 1.

[0046] Loading of loose fibers: Uniformly fill the loose fiber raw materials to be tested into the hollow grid of the loose fiber yarn cage 7 (the grid aperture is 0.3 - 0.5 cm) to ensure that the raw materials completely cover the internal space of the yarn cage.

[0047] Fixing of the yarn cage: Align the bottom flange of the loose fiber yarn cage 7 with the top threaded hole of the central rod 6, tighten the detachable bolt 8, and press the top flange of the yarn cage through the pre-tightening force of the bolt to prevent the displacement of the yarn cage during the flushing process of the dye solution.

[0048] Verification of top cover closing: The control panel 25 triggers the air cylinder 301 to retract. After the top cover 2 is closed, the pressure sensor detects the contact pressure of the sealing surface. If the pressure value is lower than the threshold, an alarm prompt will be issued.

[0049] Step S2: Process parameter setting Input of parameter classification: Select "new test" on the touch interface of the control panel 25 and input the following parameters: Heating parameters: Set the initial heating rate (such as linear heating mode), target temperature (such as 80 °C) and heat preservation time (such as 30 minutes).

[0050] Circulation parameters: Define the working mode of the dye circulation pump 11 (high-pressure penetration stage / low-pressure heat preservation stage).

[0051] Sampling parameters: Set the automatic sampling interval (e.g., every 5 minutes) and the total sampling volume.

[0052] Parameter verification: The control panel 25 automatically verifies the logic of the parameters (e.g., the target temperature shall not be higher than the equipment tolerance value). After passing the verification, a test process instruction set is generated.

[0053] Step S3: Preparation and injection of the dye mother liquor Addition of auxiliaries: Add dyeing auxiliaries (powder or liquid) and solvents (such as water) into the cylinder body 401 of the cylinder mixing mechanism 4 according to the ratio.

[0054] Start mixing: The control panel 25 automatically matches the rotation speed and the forward and reverse cycle of the first motor 402 according to the type of auxiliaries (powder / liquid), drives the mixing rod 403 to rotate at high speed, and the mixing blades shear the interface between the auxiliaries and the solvent to form a homogenized dye mother liquor.

[0055] Transport of the mixed liquid: The liquid inlet controller 405 is started, and the mixed liquid is quantitatively injected into the dyeing cylinder body 1 through the liquid inlet pipe 404. After the injection is completed, a start signal for the dye liquid circulation component is triggered.

[0056] Step S4: Dye liquid circulation and temperature control execution Start the circulation pump: The control panel 25 sends an instruction to start the third motor 10. The third motor 10 drives the dye circulation pump 11 to operate at a preset frequency. The dye liquid is sucked from the bottom of the dyeing cylinder body 1 through the return pipe 28 into the circulation pump and then transported to the central spray column 5 after pressurization.

[0057] High-pressure penetration and flushing: The dye liquid forms a vertical high-pressure jet flow through the multi-stage diversion channels inside the central spray column 5, penetrates the mesh pores of the loose fiber yarn cage 7, and forces the dye liquid to penetrate into the interior of the loose fiber raw material.

[0058] Dual-mode temperature control: Rapid heating stage: The direct heating valve controller 13 of the dyeing cylinder is fully opened, and the high-temperature heat medium (such as steam) in the direct heating pipe 12 contacts the inside of the dyeing cylinder body 1 to quickly heat the dye liquid to the target temperature.

[0059] Constant temperature maintenance stage: After the dye liquid reaches the target temperature, the indirect heating valve controller 15 of the dyeing cylinder adjusts the heat medium flow rate of the indirect heating pipe 14 to uniformly heat the dye liquid through the shunt hole array. The temperature sensor feeds back data to the control panel 25 in real time to dynamically adjust the valve opening to maintain the temperature fluctuation ≤ ±0.5°C.

[0060] Step S5: Automatic sampling and sample management Sampling trigger: The control panel 25 sends a pulse signal to the automatic material receiving and sampling controller 903 according to the preset sampling interval (e.g., every 5 minutes).

[0061] Sample Sub - packaging: The automatic feeding and sampling controller 903 triggers the second motor 904 to rotate the feeding rotary disk 905, aligning the next empty feeding test tube 906 with the outlet of the floating color extraction pipeline 902. The floating color sample on the surface of the dye solution flows into the test tube through the pipeline.

[0062] Sample Identification: The control panel 25 records the sampling time points of each feeding test tube 906 and generates a unique code (such as T1 - T6), which is synchronously stored in the test report.

[0063] Pollution Prevention and Control: The fixed shell 901 seals and isolates the feeding rotary disk 905 and the feeding test tube 906 to prevent sample contamination.

[0064] Step S6: Test Completion and Equipment Reset Cooling Water Discharge: When the control panel 25 detects the end of the heat preservation time, the dye vat heating cooling water drainage controller 17 starts. The dye vat heating cooling water drainage pipeline 16 discharges the cooling water at a preset flow rate. After the drainage is completed, a cleaning instruction is triggered.

[0065] Waste Liquid Discharge and Cleaning: Waste Liquid Discharge: The dye vat drainage controller 21 opens the dye vat drainage pipeline 20, and the waste liquid is directed through the dye vat drainage pipeline 20 to the external treatment system.

[0066] Reverse Flushing: The dye vat water inlet controller 23 starts. The cleaning water is sprayed backward through the multi - hole nozzles at the end of the dye vat water inlet pipeline 22 to scour the inner wall of the dye vat body 1 and the loose fiber cage 7, and the residual dye is discharged with the water flow.

[0067] Feed Tank Cleaning: The feed tank water inlet controller 27 injects cleaning water into the feed tank body 401. The mixing rod 403 rotates at a low speed to assist in scouring, and the waste water is discharged through the feed tank drainage pipeline 18.

[0068] Step S7: Result Analysis and Color - Uptake Point Judgment Sample Detection: Take out the feeding test tube 906, and measure the color difference value (ΔE) and color - uptake rate of the samples at each time period through a spectrophotometer or manual colorimetry.

[0069] Cage Disassembly: Loosen the detachable bolt 8, take out the loose fiber cage 7, and observe the color consistency between the inside and the surface of the loose fiber raw material after disassembly.

[0070] Color - Uptake Point Judgment: If the sample color difference ΔE ≤ 1.0 (compared with the standard color card) and the colors of the inner and outer layers of the loose fiber are uniform, it is judged as a qualified color - uptake point; if the color difference exceeds the standard or there is a locally uncolored area, adjust the process parameters and retest.

[0071] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A testing device for coloring points of loose fiber dyeing raw materials, comprising a dye vat body (1) and a control panel (25), characterized in that, A top cover (2) is provided at the top of the dyeing vat body (1). An opening cover mechanism (3) is arranged between the dyeing vat body (1) and the top cover (2). A material cylinder mixing mechanism (4) is arranged outside the dyeing vat body (1). A central water spray column (5) is arranged inside the dyeing vat body (1). A central rod (6) is arranged inside the central water spray column (5). A detachable bolt (8) is threadedly connected to the top of the central rod (6). A loose fiber yarn cage (7) is installed inside the dyeing vat body (1). A dye liquor circulation component is arranged at the bottom of the dyeing vat body (1). A material receiving mechanism (9) is arranged outside the dyeing vat body (1). A temperature raising component is arranged at the outer side of the dyeing vat body (1) near the bottom. A heating cooling water drainage component is arranged at the bottom of the dyeing vat body (1). A first water inlet and drainage component is arranged at the outer side of the dyeing vat body (1) near the bottom. A second water inlet and drainage component is arranged at the bottom of the material cylinder mixing mechanism (4). A plurality of fixed bases (24) are equidistantly distributed at the bottom of the dyeing vat body (1); The material receiving mechanism (9) includes a fixed shell (901) and a floating color receiving pipeline (902). The fixed shell (901) is installed outside the dyeing vat body (1). The floating color receiving pipeline (902) is communicated with the dyeing vat body (1). An automatic material receiving and sampling controller (903) is arranged outside the floating color receiving pipeline (902). A second motor (904) is installed on the inner bottom wall of the fixed shell (901). An output end of the second motor (904) is fixedly connected to a material receiving rotating disk (905). A plurality of material receiving test tubes (906) are clamped on the top of the material receiving rotating disk (905).

2. The color application point testing device for loose fiber dyeing raw materials according to claim 1, wherein The opening cover mechanism (3) includes a connecting frame (302). The connecting frame (302) is fixedly connected to the top of the top cover (2). A cylinder (301) is rotatably connected to the outside of the dyeing vat body (1). An output end of the cylinder (301) is rotatably connected to one end of the connecting frame (302) away from the top cover (2). An adapter rod (303) is fixedly connected to the outside of the dyeing vat body (1). The adapter rod (303) is rotatably connected to the connecting frame (302).

3. The coloring point testing device for loose fiber dyeing raw materials according to claim 1, characterized in that, The material cylinder mixing mechanism (4) includes a material cylinder body (401). A first motor (402) is installed on the top of the material cylinder body (401). An output end of the first motor (402) is fixedly connected to a mixing rod (403). One side of the bottom of the material cylinder body (401) is communicated with the dyeing vat body (1) through a liquid inlet pipe (404). A liquid inlet controller (405) is arranged outside the liquid inlet pipe (404).

4. The coloring point testing device for loose fiber dyeing raw materials according to claim 1, characterized in that, The second water inlet and drainage component includes a material cylinder water inlet pipeline (26). The material cylinder water inlet pipeline (26) is communicated at the bottom of the material cylinder body (401). A material cylinder water inlet controller (27) is installed outside the material cylinder water inlet pipeline (26). The material cylinder water inlet pipeline (26) is communicated with a material cylinder drainage pipeline (18). A material cylinder drainage controller (19) is arranged outside the material cylinder drainage pipeline (18).

5. The color application point testing device for loose fiber dyeing raw materials according to claim 1, characterized in that The heating and cooling water drainage assembly includes a dyeing vat heating and cooling water drainage pipe (16), which is connected to the bottom of the dyeing vat body (1), and a dyeing vat heating and cooling water drainage controller (17) is arranged outside the dyeing vat heating and cooling water drainage pipe (16).

6. The coloring point testing device for loose fiber dyeing raw materials according to claim 1, characterized in that, The dye liquor circulation assembly includes a motor three (10) and a dye circulation pump (11). The motor three (10) is installed between a plurality of fixed bases (24). The output end of the motor three (10) is connected to the dye circulation pump (11). The outlet of the dye circulation pump (11) is communicated with the bottom of the central water spraying column (5) through a pipe, and the inlet of the dye circulation pump (11) is communicated with the bottom of the dyeing vat body (1) through a return pipe (28).

7. The color application point testing device for loose fiber dyeing raw materials according to claim 1, characterized in that, The temperature rising assembly includes a direct temperature rising pipe (12), which is communicated with the outer side of the dyeing vat body (1) at a position slightly below the bottom. An indirect temperature rising pipe (14) is communicated with the outside of the direct temperature rising pipe (12). A dyeing vat direct temperature rising valve controller (13) is arranged outside the direct temperature rising pipe (12), and a dyeing vat indirect temperature rising valve controller (15) is arranged outside the indirect temperature rising pipe (14).

8. An apparatus for testing the coloring points of raw materials for loose fiber dyeing according to claim 1, characterized in that, The first water inlet and drainage assembly includes a dyeing vat drainage pipe (20), which is communicated with the outer side of the dyeing vat body (1) at a position slightly below the bottom. A dyeing vat water inlet pipe (22) is communicated with the outside of the dyeing vat drainage pipe (20). A dyeing vat drainage controller (21) is arranged outside the dyeing vat drainage pipe (20), and a dyeing vat water inlet controller (23) is arranged outside the dyeing vat water inlet pipe (22).

9. A testing device for coloring points of loose fiber dyeing raw materials according to claim 1, characterized in that, The control panel (25) is connected to the cylinder (301), motor one (402), liquid inlet controller (405), automatic feeding and sampling controller (903), motor two (904), motor three (10), dye circulation pump (11), dyeing vat direct temperature rising valve controller (13), dyeing vat indirect temperature rising valve controller (15), dyeing vat heating and cooling water drainage controller (17), material cylinder drainage controller (19), dyeing vat drainage controller (21), dyeing vat water inlet controller (23) and material cylinder water inlet controller (27).

10. A method for testing the coloring points of loose fiber dyeing raw materials, according to the loose fiber dyeing raw material coloring point testing device described in any one of claims 1-9, characterized in that, It includes the following steps: S1. Start the cylinder (301) of the open cover mechanism (3) through the control panel (25), drive the top cover (2) to open, load the loose fiber raw materials into the loose fiber yarn cage (7) in the dyeing vat body (1), and close the top cover (2) after pressing and fixing with the detachable bolts (8). S2. Edit the process parameters of the coloring point test on the control panel (25), including the heating rate, target temperature and heat preservation time. S3. Add dyeing auxiliaries to the material cylinder body (401) of the material cylinder mixing mechanism (4), start the motor one (402) to drive the mixing rod (403) to stir and mix, and inject the mixed liquid into the dyeing vat body (1) through the liquid inlet pipe (404) by the liquid inlet controller (405). S4. Start the motor three (10) of the dye liquor circulation component and the dye circulation pump (11), so that the dye liquor vertically flushes the loose fiber yarn cage (7) through the central water spray column (5). At the same time, control the heating of the direct heating pipe (12) and the indirect heating pipe (14) respectively through the dye vat direct heating valve controller (13) and the dye vat indirect heating valve controller (15) to maintain the stability of the dye liquor temperature; S5. After reaching the heat preservation time, the automatic feeding and sampling controller (903) starts the motor two (904) to drive the feeding rotary disk (905) to switch the feeding test tube (906), exports the dye liquor sample through the floating color extraction pipeline (902), and feeds back the sampling information to the control panel (25); S6. The control panel (25) prompts that the test is completed. The dye vat heating cooling water drainage controller (17) starts the dye vat heating cooling water drainage pipeline (16) to drain the cooling water, and the dye vat drainage controller (21) controls the dye vat drainage pipeline (20) to discharge the waste liquid; S7. Then open the top cover (2) to take out the loose fiber yarn cage (7), and confirm the coloring point according to the color difference and coloring rate of the sample in the feeding test tube (906).

Images