A reactive dye yarn impregnation device and process

Abstract

This application relates to a reactive dyeing yarn immersion apparatus and process, including a dyeing vat. The vat includes a vat body and a vat cover hinged to the vat body. A horizontal groove is formed on the side wall of the vat body, connecting the inner and outer sides of the vat body. A slider is provided in the groove, and a horizontally arranged locking rod is fixedly connected to one end of the slider away from the inside of the vat body. A locking groove is formed on the vat cover. When the vat cover is engaged with the vat body, the locking groove is positioned directly opposite the locking rod. After the dyeing process begins, the pressure inside the vat increases, creating a pressure difference between the two ends of the slider, which then begins to slide. The slider drives the locking rod to engage in the locking groove, locking the vat cover. After dyeing is completed, the vat cover cannot be opened directly; the pressure inside the vat needs to be reduced to atmospheric pressure before the slider drives the locking rod to disengage from the locking groove. This reduces the risk of the vat cover accidentally popping open. This application improves the safety of the dyeing machine.

Description

Technical Field

[0001] This application relates to the field of dyeing machines, and in particular to a reactive dye yarn impregnation device and process. Background Technology

[0002] A high-temperature dyeing machine is a device used to dye textiles. By controlling temperature and pressure, it firmly penetrates the dye into the textile fibers, achieving a uniform and long-lasting dyeing effect. High-temperature dyeing machines are typically used for the mass production of dyed products, such as clothing fabrics and home textiles. These machines are commonly used in textile factories and dyeing plants and can be adjusted and operated according to different dyeing needs.

[0003] To facilitate the batch dyeing of yarn, high-temperature dyeing machines are usually used with a fixed frame. The fixed frame includes a tray and several guide rods vertically fixed to the tray. The yarn bobbins are placed on the guide rods. During dyeing, the fixed frame and yarn bobbins are hoisted into the high-temperature dyeing machine as a whole using hoisting equipment. The cover is closed and high-pressure air is introduced into the dyeing machine for dyeing. After dyeing is completed, the air pressure inside the dyeing machine needs to be gradually reduced until the internal and external air pressure of the dyeing machine reaches a state of equilibrium. Only then can the cover be opened, the fixed frame and yarn be removed, and the dyeing process is completed.

[0004] Regarding the aforementioned technologies, the lid can only be opened when the internal and external air pressure of the dyeing machine reaches a state of equilibrium. However, due to the large amount of repetitive work done by staff every day, there is a possibility of misoperation. If the locking mechanism of the lid is released before the air pressure inside the dyeing machine has dropped to the standard atmospheric pressure, the lid may pop open directly, posing a certain safety hazard. Summary of the Invention

[0005] To improve the safety of dyeing machines, this application provides a reactive dye yarn impregnation device and process.

[0006] This application provides a reactive dye yarn impregnation device and process, which adopts the following technical solution:

[0007] A reactive dyeing yarn impregnation device and process includes a dyeing vat, a heater for heating the dye, and a circulation pump for driving the dye circulation. The dyeing vat includes a vat body and a vat cover hinged to the vat body. The dyeing vat is connected to a pressurization pipe for introducing high-pressure gas into the vat. A horizontal groove is provided on the side wall of the vat body, connecting the inner and outer sides of the vat body. A slider is provided in the groove, the shape and size of which are adapted to the groove and are slidably connected to the vat body. A horizontally arranged locking rod is fixedly connected to one end of the slider away from the inside of the vat body. A locking groove with a shape and size adapted to the locking rod is provided on the vat cover. When the vat cover is fastened to the vat body, the locking groove is located directly opposite the locking rod. When the pressure inside the dyeing vat increases, the slider drives the locking rod to slide towards and embed into the locking groove.

[0008] By adopting the above technical solution, when the cylinder head and cylinder body are engaged, the locking groove is positioned directly opposite the locking rod. After the dyeing process begins, high-pressure air is introduced into the dyeing tank through the pressurization pipe. The pressure inside the dyeing tank increases, creating a pressure difference between the two ends of the slider, which then begins to slide. The slider drives the locking rod to move closer to the locking groove, eventually embedding it into the locking groove and locking the cylinder head. After dyeing is completed, the cylinder head cannot be opened directly; the pressure inside the cylinder needs to be reduced to atmospheric pressure before the slider drives the locking rod to disengage from the locking groove. This reduces the risk of the cylinder head accidentally popping open and improves the safety of the dyeing machine.

[0009] Optionally, the dyeing vat is provided with a fixing frame for supporting the yarn bobbin. The fixing frame includes a tray and several guide rods vertically fixed to the tray. Several limiting holes are opened on the vat cover. The limiting holes and guide rods are arranged in a one-to-one correspondence in position, and the shape and size of the limiting holes are adapted to the guide rods. The side wall of one end of the limiting hole opening is inclined away from the central axis of the limiting hole. When the vat cover is fastened to the vat body, the end of the guide rod is embedded in the limiting hole.

[0010] By adopting the above technical solution, during the dyeing process, dye is continuously sprayed onto the guide rods and yarn bobbins, causing irregular shaking of the guide rods and generating noise, which affects the stability of the cylinder. By creating limiting holes on the cylinder cover that correspond one-to-one with the guide rods, when the cylinder cover is fastened to the cylinder body, the ends of the guide rods are embedded in the corresponding limiting holes, which helps to reduce the shaking of the guide rods and thus improve the stability of the cylinder body.

[0011] Optionally, the cylinder head includes a cover body and a limiting plate. The cover body is hinged to the cylinder body, and a limiting hole is opened on the limiting plate. A connecting rod is fixedly connected to the side of the cover body near the opening of the cylinder body. The limiting plate is hinged to the connecting rod, and the hinge axis of the limiting plate hinged to the connecting rod is parallel to the hinge axis of the cover body hinged to the cylinder body.

[0012] By adopting the above technical solution, the cylinder head includes a cover body and a limiting plate. The limiting hole is opened on the limiting plate. A connecting rod is fixedly connected to the side of the cover body near the cylinder opening. The limiting plate is hinged to the connecting rod. Before the cover body and the cylinder body are fastened together, the limiting plate will reach a horizontal state under its own weight, so that the length direction of the limiting hole is parallel to the guide rod, which helps to reduce the resistance of the guide rod being embedded in the limiting hole.

[0013] Optionally, the connecting rod includes a buffer cylinder fixedly connected to the cover and a slide rod hinged to the limiting plate. A piston plate is slidably connected inside the buffer cylinder. A first elastic element is connected between the piston plate and the bottom wall of the buffer cylinder. The end of the piston plate away from the first elastic element is fixedly connected to the slide rod.

[0014] By adopting the above technical solution, after the cover and cylinder are fastened together, the guide rod is embedded in the limiting hole. After the guide rod abuts against the bottom wall of the limiting hole, it will push the limiting plate to move closer to the cover, thereby causing the slide rod to drive the piston plate to slide in the same direction, so that the first elastic element is in a compressed state, which helps to press the guide rod in the vertical direction, further reducing the shaking of the guide rod and improving the stability of the cylinder.

[0015] Optionally, the cylinder block is equipped with a temperature sensor for detecting the cylinder block temperature.

[0016] By adopting the above technical solution and setting up a temperature sensor, staff can know the temperature inside the dyeing vat at any time. If the temperature exceeds the applicable range of the reactive dye, the heating machine can be turned off immediately to prevent the reactive dye from losing its dyeing effect.

[0017] Optionally, the cylinder block is equipped with a detection and control circuit, which includes a sensing module, a comparison module, and a control module.

[0018] The sensing module includes a temperature sensor, which is mounted on the cylinder block to detect the temperature inside the cylinder and output a sensing signal.

[0019] The comparison module is electrically connected to the sensing module. The comparison module is used to receive the sensing signal from the sensing module. When the comparison module receives the sensing signal, it compares the voltage value corresponding to the sensing signal with a preset voltage value. The preset voltage value corresponds to the highest working temperature for normal dyeing. If the voltage value of the sensing signal is greater than the preset voltage value, the comparison module outputs a stop signal.

[0020] The control module is electrically connected to the comparison module. The control module receives the stop signal from the comparison module. When the control module receives the stop signal, it outputs a control signal to stop the heater from working.

[0021] By adopting the above technical solution, the temperature sensor of the sensing module detects the temperature inside the dyeing vat and outputs a sensing signal. The comparison module receives the sensing signal and compares the voltage value of the received sensing signal with a preset voltage value, which corresponds to the highest temperature at which the reactive dye is normally used. If the voltage value corresponding to the sensing signal is greater than the preset voltage value, a stop signal is output. The control module receives the stop signal and outputs a control signal, which controls the heater to stop working. This allows the heater to automatically stop working when the temperature inside the dyeing vat is higher than the highest temperature at which the reactive dye is normally used, thus preventing the reactive dye from losing its dyeing effect.

[0022] Optionally, the cylinder body is provided with a pressure cylinder with a single-sided opening. A pressure-sensing plate is slidably connected inside the pressure cylinder. A pressure pipe is connected between the cylinder body and the pressure cylinder. The connection position between the pressure pipe and the pressure cylinder is located between the pressure-sensing plate and the bottom wall of the pressure cylinder. An adjusting rack 711 is fixedly connected to the end of the pressure-sensing plate away from the bottom wall of the pressure cylinder. A control valve for controlling the opening and closing degree of the pressure pipe is provided on the pressurization pipe. An opening and closing gear for adjusting the opening and closing degree of the control valve is provided on the control valve. The opening and closing gear meshes with the adjusting rack 711. When the pressure-sensing plate slides away from the bottom wall of the pressure-sensing cylinder, the adjusting rack 711 drives the opening and closing gear to rotate in the direction of reducing the opening and closing degree of the control valve.

[0023] By adopting the above technical solution, a pressure cylinder is set up and connected to the cylinder body through a pressure pipe. This ensures that the air pressure between the pressure-sensing plate and the bottom wall of the pressure cylinder is synchronized with the air pressure inside the dyeing vat. When the air pressure inside the dyeing vat increases, the pressure-sensing plate moves away from the bottom wall of the pressure cylinder, thereby driving the adjusting rack 711 to move closer to the control valve. This drives the opening and closing gear to rotate in the direction of reducing the opening degree of the control valve, thus reducing the speed at which high-pressure gas enters the dyeing vat until the control valve is completely closed. This automatically controls the pressure inside the dyeing vat, reducing safety hazards.

[0024] Optionally, a limiting ring is fixedly connected to the opening position of the pressure cylinder to prevent the pressure-sensing plate from falling out of the pressure cylinder, and a second elastic element is provided between the limiting ring and the pressure-sensing plate to limit the initial position of the pressure-sensing plate.

[0025] By adopting the above technical solution, when the second elastic element is in its natural state, the pressure-sensing plate is in its initial position. The pressure-sensing plate can automatically slide to its initial position when the air pressure inside and outside the cylinder is balanced, which helps to save manpower.

[0026] In summary, this application includes at least one of the following beneficial technical effects of reactive dye yarn impregnation apparatus and process:

[0027] 1. During dyeing, high-pressure air is introduced into the dyeing tank through the pressurization pipe, which increases the pressure inside the dyeing tank. A pressure difference is generated at both ends of the slider and it begins to slide. The slider drives the locking rod to move towards the locking groove and finally embeds it into the locking groove, locking the tank cover. After dyeing is completed, the tank cover is difficult to open directly. The pressure inside the tank needs to be reduced to atmospheric pressure before the slider drives the locking rod to disengage from the locking groove. This reduces the risk of the tank cover accidentally popping open and improves the safety of the dyeing machine.

[0028] 2. During the dyeing process, dye is continuously sprayed onto the guide rod and yarn bobbin, causing irregular shaking of the guide rod and generating noise, which affects the stability of the cylinder. The cylinder cover has several limiting holes, which correspond one-to-one with the guide rod in position, and the shape and size of the limiting holes are adapted to the guide rod. The side wall at one end of the limiting hole opening is inclined away from the central axis of the limiting hole. When the cylinder cover is fastened to the cylinder body, the end of the guide rod is embedded in the corresponding limiting hole, which helps to reduce the shaking of the guide rod and thus improve the stability of the cylinder body. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0030] Figure 2 This is a schematic diagram of the internal structure of an embodiment of this application.

[0031] Figure 3 yes Figure 2 An enlarged schematic diagram of part A in the middle.

[0032] Figure 4 This is an exploded schematic diagram used to illustrate the cylinder head in an embodiment of this application.

[0033] Figure 5 yes Figure 2 Enlarged diagram of part B.

[0034] Figure 6 This is a schematic diagram illustrating the sensing module, comparison module, and control module in an embodiment of this application.

[0035] Figure 7 This is a schematic diagram illustrating the internal structure of the pressure cylinder in an embodiment of this application.

[0036] Explanation of reference numerals in the attached drawings: 1. Dyeing vat; 11. Vat body; 111. Slide groove; 112. Slider; 113. Locking rod; 114. Temperature sensor; 12. Vat cover; 121. Locking groove; 122. Cover body; 123. Connecting rod; 1231. Buffer slide cylinder; 1232. Slide rod; 1233. Piston plate; 1234. First elastic element; 124. Limiting plate; 1241. Limiting hole; 2. Heating machine; 3. Circulating pump; 4. Pressurization pipeline; 41. Control valve; 411. Opening and closing gear; 5. Fixing frame; 51. Tray; 52. Guide rod; 61. Sensing module; 62. Comparison module; 63. Control module; 7. Pressure cylinder; 71. Pressure sensing plate; 711. Adjusting rack; 72. Pressure pipe; 73. Second elastic element. Detailed Implementation

[0037] The present application will be further described in detail below with reference to all the accompanying drawings.

[0038] This application discloses an apparatus and process for dyeing yarn with reactive dyes.

[0039] Reference Figure 1 , Figure 2 and Figure 3 A reactive dyeing yarn impregnation device and process are disclosed, comprising a dyeing vat 1, a heater 2, and a circulating pump 3. The heater 2 is connected to the dyeing vat 1 via a pipeline and is used to heat the reactive dye to the optimal dyeing temperature range. The circulating pump 3 is installed on the pipeline between the heater 2 and the dyeing vat 1 and is used to provide power for the circulation of the dyeing agent. The dyeing vat 1 includes a vat body 11 and a vat cover 12, with the vat cover 12 hinged to the vat body 11. The dyeing vat 1 is connected to a pressurized pipeline 4 for introducing high-pressure gas into the dyeing vat 1. If the gas pressure in the dyeing vat 1 is not reduced to standard atmospheric pressure before the vat cover 12 is opened, the vat cover 12 may pop open directly, posing a certain safety hazard. In this embodiment, a locking rod 113 is provided on the lower cylinder 11 and a locking groove 121 corresponding to the locking rod 113 is opened on the cylinder cover 12. When the air pressure inside the dyeing cylinder 1 is higher than the external standard atmospheric pressure, the locking rod 113 will be embedded in the locking groove 121 to lock the cylinder cover 12. This helps to reduce the risk of the cylinder cover 12 accidentally popping open and improves the safety of the dyeing machine.

[0040] Reference Figure 1 and Figure 3 A horizontal groove 111 is formed on the side wall of the cylinder body 11, connecting the inner and outer sides of the cylinder body 11. A slider 112 is provided inside the groove 111, the shape and size of which are adapted to the groove 111 and slidably connected to the cylinder body 11. A horizontally set locking rod 113 is fixedly connected to the end of the slider 112 away from the inside of the cylinder body 11. When the cylinder cover 12 is fastened to the cylinder body 11, the locking groove 121 is located directly opposite the locking rod 113. After the dyeing work begins, high-pressure gas is introduced into the dyeing cylinder 1 through the pressurization pipe 4, increasing the pressure inside the dyeing cylinder 1. The gas pressure inside the dyeing cylinder 1 is greater than the external atmospheric pressure, and the slider 112 begins to slide. The locking rod 113 slides in the same direction as the slider 112. The cylinder cover 12 has a locking groove 121 whose shape and size are adapted to the locking rod 113. Finally, the locking rod 113 is embedded in the locking groove 121, locking the cylinder cover 12. After dyeing is completed, the pressure inside the cylinder 11 needs to be reduced to atmospheric pressure before the slider 112 will drive the locking rod 113 to disengage from the locking groove 121, reducing the risk of the cylinder cover 12 accidentally popping open and improving the safety of the dyeing machine.

[0041] Reference Figure 2 and Figure 4The dyeing vat 1 is equipped with a fixing frame 5 for supporting the yarn bobbin. The fixing frame 5 includes a tray 51 and several guide rods 52 vertically fixed to the tray 51. During the dyeing process, dye is continuously sprayed onto the guide rods 52 and the yarn bobbin, causing irregular shaking of the guide rods 52 and generating noise, which affects the stability of the vat body 11. The vat cover 12 has several limiting holes 1241. The limiting holes 1241 correspond one-to-one with the guide rods 52 in position, and the shape and size of the limiting holes 1241 are adapted to the guide rods 52. The side wall of the opening end of the limiting hole 1241 is inclined away from the central axis of the limiting hole 1241. When the vat cover 12 is fastened to the vat body 11, the end of the guide rod 52 is embedded in the corresponding limiting hole 1241, which helps to reduce the shaking of the guide rod 52 and thus improve the stability of the vat body 11.

[0042] Reference Figure 2 and Figure 5 The cylinder head 12 is hinged to the cylinder body 11. Before the cylinder head 12 and the cylinder body 11 are fully engaged, there will be a certain angle between the limiting hole 1241 and the guide rod 52. The guide rod 52 needs to be inserted into the limiting hole 1241 by utilizing the inclined side wall of the opening end of the limiting hole 1241 and its own elasticity, which presents a certain resistance. The cylinder head 12 includes a cover body 122 and a limiting plate 124. The cover body 122 is hinged to the cylinder body 11, and the limiting hole 1241 is opened on the limiting plate 124. A connecting rod 123 is fixedly connected to the side of the cover body 122 near the opening of the cylinder body 11. The limiting plate 124 is hinged to the connecting rod 123, and the hinge axis of the limiting plate 124 hinged to the connecting rod 123 is parallel to the hinge axis of the cover body 122 hinged to the cylinder body 11. Before the cover 122 is fastened to the cylinder 11, the limiting plate 124 will reach a horizontal state under its own weight, thereby making the length direction of the limiting hole 1241 parallel to the guide rod 52, which helps to reduce the resistance of the guide rod 52 being embedded in the limiting hole 1241.

[0043] Reference Figure 2 and Figure 5 The connecting rod 123 includes a buffer cylinder 1231 fixedly connected to the cover 122 and a slide rod 1232 hinged to the limiting plate 124. A piston plate 1233 is slidably connected inside the buffer cylinder 1231. A first elastic element 1234 is connected between the piston plate 1233 and the bottom wall of the buffer cylinder 1231. The first elastic element 1234 is a spring. The end of the piston plate 1233 facing away from the first elastic element 1234 is fixedly connected to the slide rod 1232. During the process of the cover 122 and the cylinder 11 being fastened together, after the guide rod 52 abuts against the bottom wall of the limiting hole 1241, it will push the limiting plate 124 to move closer to the cover 122, thereby causing the slide rod 1232 to drive the piston plate 1233 to slide in the same direction, so that the first elastic element 1234 is in a compressed state, which helps to press the guide rod 52 in the vertical direction, further reducing the shaking of the guide rod 52 and improving the stability of the cylinder 11.

[0044] Reference Figure 1 The dyeing effect of reactive dyes is positively correlated with temperature; that is, the higher the temperature, the better the dyeing effect. However, the effect will gradually decrease or even be lost if the applicable temperature range is exceeded. A temperature sensor 114 is installed on the dyeing tank 1, so that the operator can know the temperature inside the dyeing tank 1 at any time. If the temperature exceeds the applicable range of the reactive dye, the heating machine 2 can be turned off immediately to prevent the reactive dye from losing its dyeing effect.

[0045] Reference Figure 1 and Figure 6 The cylinder block 11 is equipped with a detection and control circuit, which includes a sensing module 61, a comparison module 62, and a control module 63.

[0046] The sensing module 61 includes a temperature sensor 114, which is disposed on the cylinder 11 and is used to detect the temperature inside the cylinder 11 and output a sensing signal.

[0047] Comparison module 62 includes:

[0048] Comparator T, the positive input terminal of comparator T is electrically connected to the output terminal of temperature sensor 114;

[0049] Transistor Q, the base of transistor Q is electrically connected to the output of comparator T;

[0050] Resistor R1, one end of resistor R1 is electrically connected to the collector of transistor Q, and the other end of resistor R1 is electrically connected to power supply VCC.

[0051] The relay's electromagnetic coil KA1 has one end electrically connected to the emitter of the transistor Q.

[0052] Resistor R2, one end of which is electrically connected to the end of the relay's electromagnetic coil KA1 that is furthest from the transistor Q, and the other end of resistor R2 is grounded;

[0053] Control module 63 includes:

[0054] The normally closed switch KA1-2 of the relay is electrically connected at one end between the electromagnetic coil KA1 of the relay and the resistor R2.

[0055] Heater 2, one end of which is electrically connected to the end of normally closed switch KA1-2 of the relay away from resistor R2;

[0056] Resistor R3 is connected at one end to the normally closed switch KA1-2 of the heater 2 away from the relay, and the other end of resistor R3 is grounded.

[0057] Reference Figure 1and Figure 6 The temperature sensor 114 of the sensing module 61 detects the temperature inside the dyeing vat 1 and outputs a sensing signal. The comparison module 62 receives the sensing signal and compares the voltage value of the received sensing signal with a preset voltage value. The preset voltage value corresponds to the highest temperature at which the reactive dye is normally used. If the voltage value corresponding to the sensing signal is greater than the preset voltage value, a stop signal is output. The control module 63 receives the stop signal and outputs a control signal. The control signal controls the heater 2 to stop working. When the temperature inside the dyeing vat 1 is higher than the highest temperature at which the reactive dye is normally used, the heater 2 can be automatically controlled to stop working, thus preventing the reactive dye from losing its dyeing effect.

[0058] Reference Figure 1 and Figure 7 If high-pressure gas is continuously introduced into dyeing vat 1 during the dyeing process, the air pressure inside dyeing vat 1 will become too high, posing a certain safety hazard. This requires dedicated personnel to check it regularly, thus consuming considerable labor. A pressure cylinder 7 is installed outside the vat body 11. The pressure cylinder 7 has an opening on one side and a pressure-sensing plate 71 is slidably connected inside it. A pressure pipe 72 connects the vat body 11 and the pressure cylinder 7, with the connection point between the pressure-sensing plate 71 and the bottom wall of the pressure cylinder 7. The air pressure between the pressure-sensing plate 71 and the bottom wall of the pressure cylinder 7 is synchronized with the air pressure inside dyeing vat 1. When the air pressure inside dyeing vat 1 increases, the pressure-sensing plate 71 moves away from the bottom wall of the pressure cylinder 7. An adjusting rack 711 is fixedly connected to the end of the pressure-sensing plate 71 away from the bottom wall of the pressure cylinder 7, and the adjusting rack 711 moves synchronously with the pressure-sensing plate 71. The pressurized pipeline 4 is equipped with a regulating valve 41 to control the opening and closing degree of the pressurized pipeline 4. The regulating valve 41 is equipped with an opening and closing gear 411 to adjust the opening and closing degree of the regulating valve 41. The opening and closing gear 411 meshes with an adjusting rack 711. When the air pressure in the dyeing tank 1 increases, the adjusting rack 711 drives the opening and closing gear 411 to rotate in the direction of reducing the opening and closing degree of the regulating valve 41, thereby reducing the speed at which high-pressure gas enters the dyeing tank 1, until the regulating valve 41 is completely closed. This can automatically control the pressure in the dyeing tank 1 and reduce safety hazards.

[0059] Reference Figure 1 and Figure 7 When hoisting the fixing frame 5, the cylinder cover 12 needs to be opened. At this time, the air pressure inside and outside the cylinder 11 is balanced, and the pressure-sensing plate 71 can slide freely. Before dyeing, the operator needs to manually slide the pressure-sensing plate 71 back to its initial position, which increases the operation steps. A limiting ring is fixedly connected to the opening of the pressure cylinder 7 to prevent the pressure-sensing plate 71 from falling out of the pressure cylinder 7. A second elastic element 73 is provided between the limiting ring and the pressure-sensing plate 71 to limit the initial position of the pressure-sensing plate 71. When the second elastic element 73 is in its natural state, the pressure-sensing plate 71 is in its initial position. The pressure-sensing plate 71 can automatically slide back to its initial position when the air pressure inside and outside the cylinder 11 is balanced, which helps to save manpower.

[0060] The implementation principle of the reactive dye yarn impregnation device and process in this application embodiment is as follows: During dyeing, the yarn bobbins are first placed in rows on the guide rod 52 of the fixed frame 5, and the fixed frame 5 is hoisted into the cylinder 11. The cylinder cover 12 is fastened to the cylinder 11, at which time the locking groove 121 is located directly opposite the locking rod 113. After the dyeing work begins, high-pressure gas is introduced into the dyeing cylinder 1 through the pressurization pipe 4, increasing the pressure inside the dyeing cylinder 1. A pressure difference is generated at both ends of the slider 112, and the slider 112 drives the locking rod 113 to move towards the locking groove 121, eventually embedding it into the locking groove 121 and locking the cylinder cover 12. After dyeing is completed, the pressure inside the cylinder 11 needs to be reduced to atmospheric pressure before the slider 112 drives the locking rod 113 to disengage from the locking groove 121, reducing the risk of the cylinder cover 12 accidentally popping open and improving the safety of the dyeing machine.

[0061] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A reactive dye yarn dip dyeing device comprising a dye vat (1), a heating machine (2) for heating the dye and a circulating pump (3) for driving the circulation of the dye, the dye vat (1) comprising a vat body (11) and a vat cover (12) hinged to the vat body (11), the dye vat (1) being connected with a pressurizing pipeline (4) for feeding high-pressure gas into the dye vat (1), characterized in that: A horizontal groove (111) is provided on the side wall of the cylinder (11). The groove (111) connects the inner and outer sides of the cylinder (11). A slider (112) is provided in the groove (111). The shape and size of the slider (112) are adapted to the groove (111) and are slidably connected to the cylinder (11). A horizontally arranged locking rod (113) is fixedly connected to one end of the slider (112) away from the inside of the cylinder (11). A locking groove (121) with a shape and size adapted to the locking rod (113) is provided on the cylinder cover (12). When the cylinder cover (12) is fastened to the cylinder (11), the locking groove (121) is located directly opposite the locking rod (113). When the pressure inside the dyeing cylinder (1) increases, the slider (112) drives the locking rod (113) to slide towards and embed into the locking groove (121). The dyeing vat (1) is provided with a fixing frame (5) for supporting the yarn bobbin. The fixing frame (5) includes a tray (51) and several guide rods (52) vertically fixed on the tray (51). The vat cover (12) is provided with several limiting holes (1241). The limiting holes (1241) and the guide rods (52) are arranged in a one-to-one correspondence in position, and the shape and size of the limiting holes (1241) are adapted to the guide rods (52). The side wall of the opening end of the limiting hole (1241) is inclined away from the central axis of the limiting hole (1241). When the vat cover (12) is fastened to the vat body (11), the end of the guide rod (52) is embedded in the limiting hole (1241). The cylinder head (12) includes a cover body (122) and a limiting plate (124). The cover body (122) is hinged to the cylinder body (11). A limiting hole (1241) is opened on the limiting plate (124). A connecting rod (123) is fixedly connected to the side of the cover body (122) near the opening of the cylinder body (11). The limiting plate (124) is hinged to the connecting rod (123). The hinge axis of the limiting plate (124) hinged to the connecting rod (123) is parallel to the hinge axis of the cover body (122) hinged to the cylinder body (11). The connecting rod (123) includes a buffer cylinder (1231) fixedly connected to the cover (122) and a slide rod (1232) hinged to the limiting plate (124). A piston plate (1233) is slidably connected inside the buffer cylinder (1231). A first elastic element (1234) is connected between the piston plate (1233) and the bottom wall of the buffer cylinder (1231). The end of the piston plate (1233) facing away from the first elastic element (1234) is fixedly connected to the slide rod (1232).

2. The reactive dye yarn impregnation device according to claim 1, characterized in that: The cylinder (11) is equipped with a temperature sensor (114) for detecting the temperature of the cylinder (11).

3. The reactive dye yarn impregnation device according to claim 2, characterized in that: The cylinder body (11) is provided with a detection and control circuit, which includes a sensing module (61), a comparison module (62), and a control module (63): The sensing module (61) includes a temperature sensor (114), which is disposed on the cylinder (11) to detect the temperature inside the cylinder (11) and output a sensing signal. The comparison module (62) is electrically connected to the sensing module (61). The comparison module (62) is used to receive the sensing signal from the sensing module (61). When the comparison module (62) receives the sensing signal, it compares the voltage value corresponding to the sensing signal with the preset voltage value. The preset voltage value corresponds to the highest working temperature for normal dyeing. If the voltage value of the sensing signal is greater than the preset voltage value, the comparison module (62) outputs a shutdown signal. The control module (63) is electrically connected to the comparison module (62). The control module (63) is used to receive the stop signal from the comparison module (62). When the control module (63) receives the stop signal, it outputs a control signal, which controls the heater (2) to stop working.

4. The reactive dye yarn impregnation device according to claim 1, characterized in that: The cylinder body (11) is provided with a pressure cylinder (7) with a single-sided opening. A pressure-sensing plate (71) is slidably connected inside the pressure cylinder (7). A pressure pipe (72) is connected between the cylinder body (11) and the pressure cylinder (7). The connection position between the pressure pipe (72) and the pressure cylinder (7) is located between the pressure-sensing plate (71) and the bottom wall of the pressure cylinder (7). An adjusting rack (711) is fixedly connected to the end of the pressure-sensing plate (71) away from the bottom wall of the pressure cylinder (7). A regulating valve (41) for controlling the opening and closing degree of the pressurizing pipe (4) is provided on the pressurizing pipe (4). An opening and closing gear (411) for adjusting the opening and closing degree of the regulating valve (41) is provided on the regulating valve (41). The opening and closing gear (411) meshes with the adjusting rack (711). When the pressure-sensing plate (71) slides away from the bottom wall of the pressure-sensing cylinder, the adjusting rack (711) drives the opening and closing gear (411) to rotate in the direction of reducing the opening and closing degree of the regulating valve (41).

5. The reactive dye yarn impregnation device according to claim 4, characterized in that: The opening of the pressure cylinder (7) is fixedly connected with a limiting ring to prevent the pressure plate (71) from coming out of the pressure cylinder (7). A second elastic element (73) is provided between the limiting ring and the pressure plate (71) to limit the initial position of the pressure plate (71).

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