A continuous drying equipment for dyed yarn

Abstract

This invention discloses a continuous drying device for dyed yarn, relating to the technical field of drying equipment. It includes a drying chamber, a chain conveyor, and conveying rollers. The drying chamber is divided into three zones along the conveying direction: a preheating zone, a constant-temperature drying zone, and a deceleration drying zone. The chain conveyor and conveying rollers are both located inside the drying chamber. Multiple sets of skeins are arranged outside the conveying rollers along the axis of the rollers, forming a circular ring. Multiple sets of upper support components and dispersing components are located below the conveying rollers. The dispersing components are located in the rear part of the constant-temperature drying zone and the front part of the deceleration drying zone. The upper support components are located in the preheating zone. Each upper support component includes a frame, which is composed of four steel plates spliced ​​together and has a U-shaped overall structure. The frame has multiple small holes, and multiple top blocks are located above the frame. The top blocks are arc-shaped to prevent snagging of the yarn. This invention features simultaneous and uniform drying of thick skeins both inside and out.

Description

Technical Field

[0001] This invention relates to the field of drying equipment technology, specifically to a continuous drying device for dyed yarn. Background Technology

[0002] After dyeing and dehydration, the yarn still has a high moisture content. It must be dried to reduce the moisture regain to the standard range. Continuous yarn drying equipment is a special equipment used to quickly and evenly dry dyed yarn. At present, industrial drying of dyed yarn mostly adopts tunnel-type continuous hot air drying room. The yarn is hung on a circulating chain or conveyor belt in the form of skeins, travels in the tunnel and is blown by high-temperature hot air sprayed from the air duct.

[0003] However, existing technology has significant drawbacks. Heat is conducted from the surface of the yarn to the interior, the moisture migration path is long, and the heat and mass transfer efficiency of hot air drying is low. This can easily lead to the internal moisture regain of thick skeins not meeting the process standards, while the surface is close to or even below the critical moisture regain of the fiber. If the drying time is extended and repeated, cotton yarn will become brittle and lose strength, wool will feel and shrink, and chemical fibers will feel hard and turn yellow. Irreversible color spots and blemishes will form on the yarn surface or in local areas, directly leading to product downgrading or scrapping.

[0004] Therefore, it is necessary to design a continuous drying equipment for dyed yarn that achieves synchronous and uniform drying inside and outside the thick skein yarn. Summary of the Invention

[0005] The purpose of this invention is to provide a continuous drying device for dyed yarn to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a continuous drying equipment for dyed yarn, comprising a drying chamber, a chain conveyor, and a conveying roller. The drying chamber is divided into three areas along the conveying direction: a preheating zone, a constant temperature drying zone, and a deceleration drying zone. The chain conveyor and the conveying roller are both located inside the drying chamber. Multiple sets of yarn strands are arranged outside the conveying rollers, and the multiple sets of yarn strands are arranged along the axis of the conveying rollers. The yarn strands are generally circular. Multiple sets of upper support components and dispersing components are arranged below the conveying rollers. The dispersing components are located in the rear part of the constant temperature drying zone and the front part of the deceleration drying zone, and the upper support components are located in the preheating zone.

[0007] According to the above technical solution, the upper support component includes a frame one, which is spliced ​​from four sets of steel plates and is in the shape of a U-shape. The frame one has multiple sets of small holes, and multiple sets of top blocks are set on the top of the frame one. The top of the top blocks is arc-shaped to prevent the wire from being snagged. The multiple sets of top blocks are symmetrically arranged along the axis of the length direction of the frame one. The two sides of the frame one along the axis of the width direction are fixedly connected to a rotating shaft one. The axis of the width direction of the frame one is parallel to the axis of the working direction of the chain conveyor.

[0008] According to the above technical solution, the rotating shaft is installed on both sides of the drying chamber. A bracket is fixedly connected to the outside of the drying chamber. A motor is fixedly connected to one side of the bracket. The output shaft of the motor is fixedly connected to the rotating shaft. By driving the motor, the top block lifts the twisted yarn, thereby creating some gaps between the twisted yarns and allowing a larger area to contact the hot air.

[0009] According to the above technical solution, the dispersing component includes a second frame and two sets of rotating shafts. The structure of the second frame is similar to that of the first frame. Multiple sets of top frames are fitted on both sides of the second frame along the axial direction of the length. The multiple sets of top frames are arranged symmetrically along the axial direction of the second frame. The top frame is rectangular in shape and has a convex arc shape on the side near the conveying roller. Multiple sets of springs are fixedly connected inside each set of top frames. The other end of the spring is fixedly connected to the second frame. Multiple sets of dispersing teeth are fixedly connected to one side of the top frame to disperse the concentrated yarn and thus increase the contact area with the hot air.

[0010] According to the above technical solution, each set of rotating shafts is externally fixedly connected to multiple sets of cam disks. Each set of cam disks is located inside the top frame and between two sets of springs. The two sets of rotating shafts are symmetrically arranged along the axis of the length direction of the frame.

[0011] According to the above technical solution, the frame two is fixedly connected to two sides symmetrically along the axis in the width direction. The fixed shaft and two sets of rotating shafts two pass through the drying chamber. The fixed shaft is fixedly connected to a push plate. The rotating shaft two is connected to the push plate bearing. Two sets of motors two are bolted to the side of the push plate away from the frame two. The output shaft of the motor two is fixedly connected to the rotating shaft two. By driving the motor two to operate, the cam plate continuously strikes the top frame upward.

[0012] According to the above technical solution, multiple control cabinets are set outside the drying chamber. Support 1 and motor 1 are located inside the control cabinet. Support 2 is set inside the control cabinet. A cylinder is fixedly connected above support 2. The piston rod of the cylinder is fixedly connected to the push plate. By driving the cylinder, the entire dispersing component moves back and forth, so that the dispersing teeth disperse the lower section of the yarn back and forth.

[0013] According to the above technical solution, the chain conveyor has multiple sets of bases bolted above the lugs. Each set of bases is L-shaped and has a placement seat fixedly connected inside. The placement seat is U-shaped in general. The conveying roller is set inside the placement seat. Both ends of the conveying roller are fixedly connected to driven wheels. The driven wheels are located between the placement seat and the base. The conveying roller has multiple sets of limiting grooves opened along the axial direction. Each set of limiting grooves has multiple sets of protrusions fixedly connected around the circumference to increase friction.

[0014] According to the above technical solution, a rack is fixedly connected above the side plate of the chain conveyor. The rack is located in the constant temperature drying zone and the deceleration drying zone. When the conveying roller conveys to the constant temperature drying zone and the deceleration drying zone, the rack and the driven wheel mesh.

[0015] According to the above technical solution, a sludge collection tank is provided at the bottom of the drying chamber. The sludge collection tank is cone-shaped and is used to collect falling dye liquid. An air outlet pipe is provided on one side of the sludge collection tank. A second temperature and humidity sensor is provided above the air outlet pipe. An air box is provided at the top of the drying chamber. A first temperature and humidity sensor is provided below the air outlet of the air box. The yarn strand is located between the first and second temperature and humidity sensors. The air outlet pipe and the upper air box form a loop. The upper support assembly is located above the sludge collection tank.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The present invention, by setting a conveyor roller with driven teeth, enables the skein yarn to continuously rotate and turn over in the constant speed drying zone and the deceleration drying zone, eliminating drying dead corners, avoiding color spots and discoloration caused by excessive differences in moisture regain inside and outside the yarn, and improving the finished product qualification rate; by setting an upper support component with an arc-shaped top block in the preheating zone, the wet skein yarn is gently loosened by intermittent flexible lifting, which increases the heating area of ​​the yarn and avoids damage to the wet low-strength fibers; by setting a dispersing component in the constant speed drying zone and the deceleration drying zone, the skein yarn is dispersed and laterally separated, expanding the hot air contact area. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a diagram showing the operating state of the yarn strands inside the drying chamber according to the present invention; Figure 3 This is a schematic diagram of the structure of the upper support component and the dispersion component inside the drying chamber of the present invention; Figure 4 This is a schematic diagram of the upper support component structure of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of point B in the middle; Figure 6 This is a schematic diagram of the distributed component mechanism of the present invention; Figure 7 This is a schematic diagram of the front view of the distributed component structure of the present invention; Figure 8 For the present invention Figure 1 Enlarged view of point A in the middle; Figure 9This is a side view of the structure of the present invention; Figure 10 For the present invention Figure 9 Enlarged view of point C in the middle; Figure 11 This is a diagram showing the working state of the upper support component of the present invention; Figure 12 For the present invention Figure 11 Enlarged view of point D; In the diagram: 1. Drying chamber; 2. Chain conveyor; 3. Conveyor roller; 4. Dispersion assembly; 5. Base; 6. Upper support assembly; 7. Frame 1; 8. Small hole; 9. Top block; 10. Rotating shaft 1; 11. Support 1; 12. Motor 1; 13. Frame 2; 14. Rotating shaft 2; 15. Cam plate; 16. Top frame; 17. Spring; 18. Fixed shaft; 19. Push plate; 20. Motor 2; 21. Dispersion gear; 22. Support 2; 23. Cylinder; 24. Placement seat; 25. Driven wheel; 26. Rack; 27. Sludge collection tank; 28. Control cabinet; 29. ​​Protruding strip; 30. Air outlet pipe; 31. Temperature and humidity sensor 1; 32. Temperature and humidity sensor 2. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figure 1-12 This invention provides a technical solution: a continuous drying device for dyed yarn, comprising a drying chamber 1, a chain conveyor 2, and conveyor rollers 3. The drying chamber 1 is divided into three zones along the conveying direction: a preheating zone, a constant temperature drying zone, and a deceleration drying zone. The chain conveyor 2 and conveyor rollers 3 are both located inside the drying chamber 1, and multiple sets of yarn strands (such as...) are arranged outside the conveyor rollers 3. Figure 2 As shown), multiple sets of yarn strands are arranged along the axis of the conveyor roller 3. The yarn strands are in a circular shape. The chain conveyor 2 consists of a chain with connecting lugs, sprockets, a geared motor, a drive shaft, side plates, etc. It is existing technology and will not be described in detail. Multiple sets of upper support components 6 and dispersion components 4 are set below the conveyor roller 3. The dispersion components 4 are located in the rear part of the constant temperature drying zone and the front part of the deceleration drying zone. The upper support components 6 are located in the preheating zone.

[0020] The upper support component 6 includes a frame 7, which is made of four sets of steel plates spliced ​​together and has an overall U-shape. The frame 7 has multiple sets of small holes 8. Multiple sets of top blocks 9 are set on the top of the frame 7. The top of the top blocks 9 is arc-shaped to prevent the wire from being snagged. The multiple sets of top blocks 9 are symmetrically arranged along the axis of the length direction of the frame 7. The two sides of the frame 7 along the axis of the width direction are fixedly connected to the rotating shafts 10. The axis of the width direction of the frame 7 is parallel to the axis of the working direction of the chain conveyor 2.

[0021] The rotating shaft 10 passes through both sides of the drying chamber 1. The drying chamber 1 is fixedly connected to the outside of the bracket 11. The bracket 11 is fixedly connected to one side of the motor 12. The output shaft of the motor 12 is fixedly connected to the rotating shaft 10. By driving the motor 12, the top block 9 lifts the twisted yarn, thereby creating some gaps between the twisted yarns and allowing a larger area to contact the hot air.

[0022] The dispersing component 4 includes a second frame 13 and two sets of rotating shafts 14. The structure of the second frame 13 is similar to that of the first frame 7. Multiple sets of top frames 16 are fitted on both sides of the second frame 13 along the axial direction of the length. The multiple sets of top frames 16 are arranged symmetrically along the axial direction of the second frame 13. The top frame 16 is rectangular in shape and has a convex arc shape on the side near the conveying roller 3. Multiple sets of springs 17 are fixedly connected inside each set of top frames 16. The other end of the spring 17 is fixedly connected to the second frame 13. Multiple sets of dispersing teeth 21 are fixedly connected to one side of the top frame 16 to disperse the concentrated yarn and thus increase the contact area with the hot air.

[0023] Each set of rotating shafts 14 is externally fixedly connected to multiple sets of cam disks 15. Each set of cam disks 15 is located inside the top frame 16 and between two sets of springs 17. The two sets of rotating shafts 14 are symmetrically arranged along the axis of the length direction of the frame 13.

[0024] Frame 2 13 is fixedly connected to two sides symmetrically along the axis in the width direction with fixed shafts 18. Fixed shafts 18 and two sets of rotating shafts 2 14 pass through the drying chamber 1. Push plates 19 are fixedly connected to fixed shafts 18. Rotating shafts 2 14 are connected to push plates 19 with bearings. Two sets of motors 2 20 are bolted to the side of push plates 19 away from frame 2 13. The output shaft of motors 2 20 is fixedly connected to rotating shafts 2 14. By driving motors 2 20 to operate, cam disc 15 continuously strikes the top frame 16 upward.

[0025] Multiple control cabinets 28 are installed outside the drying chamber 1. The first bracket 11 and the first motor 12 are located inside the control cabinet 28. The second bracket 22 is installed inside the control cabinet 28. A cylinder 23 is fixedly connected above the second bracket 22. The piston rod of the cylinder 23 is fixedly connected to the push plate 19. By driving the cylinder 23, the entire dispersing assembly 4 moves back and forth, so that the dispersing teeth 21 disperse the lower section of the yarn back and forth.

[0026] The chain conveyor 2 has multiple sets of bases 5 bolted above the lugs. Each set of bases 5 is L-shaped and has a placement seat 24 fixedly connected inside. The placement seat 24 is U-shaped. The conveying roller 3 is set inside the placement seat 24. Both ends of the conveying roller 3 are fixedly connected to driven wheels 25. The driven wheels 25 are located between the placement seat 24 and the base 5. The conveying roller 3 has multiple sets of limiting grooves along the axial direction. Each set of limiting grooves has multiple sets of protruding strips 29 fixedly connected around the circumference to increase friction.

[0027] A rack 26 is fixedly connected above the side plate of the chain conveyor 2. The rack 26 is located in the constant temperature drying zone and the deceleration drying zone. When the conveyor roller 3 conveys to the constant temperature drying zone and the deceleration drying zone, the rack 26 and the driven wheel 25 mesh.

[0028] A sludge collection tank 27 is provided at the bottom inside the drying chamber 1. The sludge collection tank 27 is cone-shaped and is used to collect the falling dye liquid. An air outlet pipe 30 is provided on one side of the sludge collection tank 27. A second temperature and humidity sensor 32 is provided above the air outlet pipe 30. An air box (not shown in the figure) is provided at the top inside the drying chamber 1. A first temperature and humidity sensor 31 is provided below the air outlet of the air box. The yarn strand is located between the first temperature and humidity sensor 31 and the second temperature and humidity sensor 32. The air outlet pipe 30 forms a loop with the upper air box. The upper support assembly 6 is located above the sludge collection tank 27.

[0029] Example 1: A method of using a continuous drying device for dyed yarn, comprising the following steps: Step 1: Feeding and hanging yarn.

[0030] Specifically, the dyed and dehydrated yarn is manually stretched into a ring shape. The yarn is then inserted from one end of the conveyor roller 3 and suspended on it, ensuring each strand is positioned within a limiting groove. The two ends of the conveyor roller 3 are then placed within the U-shaped mounting seats 24 of the base 5, with the driven wheels 25 at both ends of the conveyor roller 3 positioned between the mounting seats 24 and the base 5. The reduction motor of the chain conveyor 2 is then started, and the chain, through the lugs and base 5, drives the conveyor roller 3 and the yarn smoothly into the drying chamber 1.

[0031] Step 2: Gentle heating of the preheating zone.

[0032] Specifically, the yarn strand first enters the preheating zone of the drying chamber 1 via the chain conveyor 2. At this time, the upper support assembly 6 in the preheating zone begins to work. The motor 12 is started, causing the rotating shaft 10 to slowly rotate clockwise and counterclockwise around the output shaft axis, causing the frame 7 to slowly swing around its length axis. The multiple sets of top blocks 9 above the frame 7 then gently lift the bottom of the yarn strand from below (e.g., Figure 11As shown, the top of the top block 9 is arc-shaped, which prevents it from snagging the yarn fibers during lifting. Under the intermittent lifting action of the top block 9, the tightly packed yarn bundles, which were originally bound together due to moisture, are gently loosened, creating tiny gaps between the yarn layers. This allows the low-speed diffused hot air in the preheating zone to penetrate into the yarn bundles, achieving uniform and gentle heating of the entire yarn bundle. The multiple sets of small holes 8 on the frame 7 ensure that the airflow at the bottom passes through normally without affecting the airflow circulation.

[0033] Furthermore, during and after this process, the temperature and humidity sensor 31 at the air box and the temperature and humidity sensor 32 at the air outlet pipe 30 monitor the changes in temperature and humidity in real time, thereby indirectly reflecting the drying situation.

[0034] Step 3: Dehydration, loosening, and flipping operations in the constant-speed drying zone.

[0035] Specifically, the preheated yarn enters the constant-speed drying zone, where the hot air temperature and wind speed are highest. In the initial section of the constant-speed drying zone, when the conveyor roller 3 reaches the position where the rack 26 is laid, the driven wheels 25 at both ends of the conveyor roller 3 mesh with the rack 26. The forward movement of the chain, through meshing, forces the driven wheels 25 and the conveyor roller 3 to rotate uniformly around their own axis. The convex strip 29 increases the friction between the conveyor roller 3 and the yarn, thus causing the suspended yarn to continuously turn over, and the inner layer yarns originally pressed against the roller surface are alternately exposed to the hot air (e.g., ...). Figure 12 (As shown).

[0036] When the yarn reaches the latter part of the constant-speed drying zone, most of the moisture has evaporated, and the yarn becomes lighter and more resilient. The dispersing component 4 then begins operation, starting motor 20 and driving shaft 14 to rotate. This, in turn, causes multiple cam discs 15 to rotate. The cam discs 15 periodically strike the top frame 16 internally. Under the reset action of spring 17, the top frame 16 vibrates up and down. The raised arc shape on the top of the top frame 16 and the dispersing teeth 21 on its sides contact the lower part of the yarn, continuously striking it upwards and thus concentrating the heavy yarn bundle. Forced dispersion and loosening allow hot air to enter and dry the internal strands. At the same time, the piston rod of cylinder 23 drives the push plate 19 and the entire frame 13 to move back and forth along the conveying direction, causing the dispersing teeth 21 to vibrate up and down while generating lateral movement, further expanding the dispersion range of the strands. Under the dual action of flipping and rotation and the dispersion teeth 21 breaking apart, the internal fibers of the thick strands are fully exposed and come into large-area contact with the hot air penetrating from top to bottom. The internal moisture is rapidly vaporized and carried away, which greatly improves the heat and mass transfer efficiency of the constant speed drying stage and eliminates the internal and external moisture gradient.

[0037] Step 4: Equilibrium rehydration in the slow-drying zone.

[0038] Specifically, after the yarn enters the slow-down drying zone, the hot air temperature is reduced and the air speed is decreased. In the front section of the slow-down drying zone, the dispersing component 4 continues to work, the rotation of the conveyor roller 3 is still ongoing, and the motor 20 stops working. At this time, the highest point of the cam disk 15 abuts against the top frame 16, and the dispersing component 4 moves back and forth along the piston rod axis only through the extension and retraction of the piston rod of the cylinder 23. The dispersing teeth 21 are inserted into the bottom of the yarn to ensure that the yarn remains loose in the stage of slowing down the drying rate and to prevent it from re-closing due to shrinkage.

[0039] After entering the latter part of the deceleration drying zone, the dispersion component 4 stops working, leaving only the low-speed rotation of the conveyor roller 3 and gentle convection airflow. In this low-intensity heat environment, the yarn completes the slow diffusion of residual internal moisture and the uniform balance of surface moisture regain, ultimately achieving the required moisture regain standard, and resulting in a soft hand feel and no color difference.

[0040] Step 5: Feeding.

[0041] Specifically, the dried yarn strands are moved out of the drying chamber 1 by the chain conveyor 2. The operator removes the conveyor roller 3 from the placement seat 24 and then removes the yarn strands upwards along the axis of the conveyor roller 3, thus completing the entire continuous drying process. During the drying process, short fibers, dye droplets, and other impurities fall into the conical dirt collection trough 27 at the bottom of the drying chamber 1 and are collected. The hot and humid air that penetrates the yarn layer enters the circulating air duct through the air outlet 30 on the side of the dirt collection trough 27. The temperature and humidity sensor at the air outlet 30 monitors the temperature and humidity changes in real time, thus forming a closed loop with the upper air box to achieve energy-saving and efficient operation.

[0042] Example 2: This example is based on the operation method of Example 1. This example adjusts the moisture content of the yarn in real time during the drying process from step 2 to step 4 in Example 1.

[0043] Let the inlet air temperature of the air box be T1, the inlet air humidity be RH1, and the outlet air temperature and humidity of the outlet pipe 30 be T2 and RH2, respectively. In the preheating zone, the yarn is initially in a high moisture content state, and a large amount of moisture continues to evaporate. The evaporation process absorbs heat, causing the outlet air temperature T2 to be significantly lower than the inlet air temperature T1. The evaporated water vapor enters the return airflow, causing the outlet air humidity RH2 to be significantly higher than the inlet air humidity RH1. At this time, the temperature difference T1-T2 and the humidity difference RH2-RH1 between the inlet and outlet air are both at large values, maintaining the preset low chain speed in the preheating zone. A gentle air temperature ensures that the yarn is heated sufficiently but not excessively during this stage. The temperature difference and humidity difference recorded at this time are used as the initial baseline values. In the subsequent drying process, the ratio of the current temperature difference to the initial temperature difference (T0), the humidity difference, and the initial humidity difference (RH0) are calculated in real time. Evaporating moisture in the yarn requires heat absorption. The higher the moisture content of the yarn, the more free water on the surface, the faster the evaporation rate, and the more heat is "drawn" from the hot air per unit time. The lower the outlet air temperature (T2) is, the greater the temperature difference. Therefore, the larger T0 and RH0 are, the more moisture there is.

[0044] After the yarn enters the constant-speed drying zone, a large amount of surface free water is removed, the vaporization rate decreases, and the temperature and humidity difference between the inlet and outlet gradually narrows, indicating that the yarn is gradually drying. Specifically, if T0 > 0.7 and RH0 > 0.6 (selected based on the experience of the staff), it indicates that there is still a large amount of free water inside the yarn that is evaporating rapidly. In this case, the operating speed of the chain conveyor 2 is reduced to prolong the residence time of the yarn in the constant-speed drying zone. At the same time, the hot air temperature of the air box is increased to increase the heat transfer temperature difference, accelerate the evaporation of moisture, and the dispersion component 4 is not activated to prevent damage to the wet fibers, ensuring sufficient heat transfer.

[0045] If 0.3 < T0 < 0.7 and 0.3 < RH0 < 0.6, it indicates that most of the free water on the surface of the yarn has disappeared, but there is still a large amount of bound water and capillary water inside. The chain maintains a medium speed, and the heating power of the bellows gradually decreases to prevent the yarn surface from drying out due to high temperature. The cylinder 23 of the dispersion component 4 is started, and the stroke of the cylinder 23 is increased, so that the dispersion teeth 21 can laterally oscillate the yarn more significantly.

[0046] If T0 < 0.3 and RH0 < 0.3, it indicates that most of the free water inside the yarn has been discharged and the difference is small. The yarn begins to enter the slow-down drying stage. At this time, if this batch of yarn is in the constant speed drying zone, the speed of the chain conveyor 2 is increased to reduce the dwell time of the yarn and the movement of the dispersion component 4 is stopped. At the same time, the hot air temperature of the air box is reduced to match the heating rate with the internal migration rate of moisture.

[0047] After the yarn enters the deceleration drying zone, the dispersing component 4 retains only the lateral dispersing function, and the conveying roller 3 continues to rotate at a low speed. During this process, only a small amount of fiber-bound water remains in the yarn, the moisture evaporation is minimal, the hot air hardly absorbs any more moisture, and the temperature and humidity of the air outlet pipe 30 are very close to those of the air box outlet, with a very small difference and tending to stabilize. This indicates that the yarn drying is complete.

[0048] Specifically, if T0 and RH0 gradually approach zero in the early part of the slow-down drying zone, it indicates that the temperature and humidity have hardly changed after the hot air passes through the yarn, and the yarn is no longer evaporating moisture. In this case, the operating speed of the chain conveyor 2 should be increased to avoid energy waste and excessive heating of the fibers. If there is still a certain difference between T0 and RH0 at the end of the slow-down drying zone, it indicates that moisture is still evaporating inside the yarn. In this case, the speed of the chain conveyor 2 should be reduced to ensure that the target value is reached before discharge, thus achieving sufficient drying.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0050] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A continuous drying device for dyed yarn, comprising a drying chamber (1), a chain conveyor (2), and conveyor rollers (3), characterized in that, The drying chamber (1) is divided into three areas along the conveying direction: a preheating zone, a constant temperature drying zone, and a deceleration drying zone. The chain conveyor (2) and the conveying roller (3) are both located inside the drying chamber (1). Multiple sets of yarn are arranged on the outside of the conveying roller (3). The multiple sets of yarn are arranged along the axis of the conveying roller (3). The yarn is circular in shape. Multiple sets of upper support components (6) and dispersion components (4) are arranged below the conveying roller (3). The dispersion components (4) are located in the rear part of the constant temperature drying zone and the front part of the deceleration drying zone. The upper support components (6) are located in the preheating zone.

2. The continuous drying equipment for dyed yarn according to claim 1, characterized in that, The upper support component (6) includes a frame (7), which is made of four sets of steel plates and is in the shape of a U-shape. The frame (7) has multiple sets of small holes (8). Multiple sets of top blocks (9) are provided on the top of the frame (7). The top of the top blocks (9) is arc-shaped. The multiple sets of top blocks (9) are symmetrically arranged along the axis of the length direction of the frame (7). The two sides of the frame (7) along the axis of the width direction are fixedly connected to a rotating shaft (10). The axis of the width direction of the frame (7) is parallel to the axis of the chain conveyor (2) in the working direction.

3. The continuous drying equipment for dyed yarn according to claim 2, characterized in that, The rotating shaft (10) passes through both sides of the drying chamber (1). A bracket (11) is fixedly connected to the outside of the drying chamber (1). A motor (12) is fixedly connected to one side of the bracket (11). The output shaft of the motor (12) is fixedly connected to the rotating shaft (10).

4. The continuous drying equipment for dyed yarn according to claim 3, characterized in that, The dispersing component (4) includes a second frame (13) and two sets of rotating shafts (14). The structure of the second frame (13) is similar to that of the first frame (7). Multiple sets of top frames (16) are fitted on both sides of the second frame (13) along the length direction. The multiple sets of top frames (16) are arranged symmetrically along the length direction of the second frame (13). The top frame (16) is rectangular in shape and has a raised arc shape on the side near the conveying roller (3). Multiple sets of springs (17) are fixedly connected inside each set of top frames (16). The other end of the springs (17) is fixedly connected to the second frame (13). Multiple sets of dispersing teeth (21) are fixedly connected to one side of the top frame (16).

5. A continuous drying device for dyed yarn according to claim 4, characterized in that, Each set of rotating shafts (14) is externally fixedly connected to multiple sets of cam disks (15). Each set of cam disks (15) is located inside the top frame (16) and between two sets of springs (17). The two sets of rotating shafts (14) are symmetrically arranged along the axis of the length direction of the frame (13).

6. A continuous drying device for dyed yarn according to claim 5, characterized in that, The frame two (13) is fixedly connected to two fixed shafts (18) symmetrically along the axis in the width direction. The fixed shafts (18) and two sets of rotating shafts (14) pass through the drying chamber (1). The fixed shafts (18) are fixedly connected to push plates (19). The rotating shafts (14) are connected to the push plates (19) by bearings. Two sets of motors (20) are bolted to the side of the push plates (19) away from the frame two (13). The output shaft of the motors (20) is fixedly connected to the rotating shafts (14).

7. A continuous drying device for dyed yarn according to claim 6, characterized in that, The drying chamber (1) is equipped with multiple control cabinets (28) on the outside. The first bracket (11) and the first motor (12) are located inside the control cabinet (28). The second bracket (22) is installed inside the control cabinet (28). A cylinder (23) is fixedly connected above the second bracket (22). The piston rod of the cylinder (23) is fixedly connected to the push plate (19).

8. A continuous drying device for dyed yarn according to claim 7, characterized in that, The chain conveyor (2) has multiple sets of bases (5) bolted above the lugs. Each set of bases (5) is L-shaped and has a placement seat (24) fixedly connected inside. The placement seat (24) is U-shaped. The conveying roller (3) is located inside the placement seat (24). Both ends of the conveying roller (3) are fixedly connected to driven wheels (25). The driven wheels (25) are located between the placement seat (24) and the base (5). The conveying roller (3) has multiple sets of limiting grooves along the axial direction. Each set of limiting grooves has multiple sets of protrusions (29) fixedly connected around the circumference.

9. A continuous drying device for dyed yarn according to claim 8, characterized in that, A rack (26) is fixedly connected above the side plate of the chain conveyor (2). The rack (26) is located in the constant temperature drying zone and the deceleration drying zone. When the conveying roller (3) conveys to the constant temperature drying zone and the deceleration drying zone, the rack (26) and the driven wheel (25) mesh.

10. A continuous drying device for dyed yarn according to claim 9, characterized in that, A sludge collection tank (27) is provided at the bottom inside the drying chamber (1). The sludge collection tank (27) is cone-shaped. An air outlet pipe (30) is provided on one side of the sludge collection tank (27). A second temperature and humidity sensor (32) is provided above the air outlet pipe (30). A wind box is provided at the top inside the drying chamber (1). A first temperature and humidity sensor (31) is provided below the air outlet of the wind box. The yarn is located between the first temperature and humidity sensor (31) and the second temperature and humidity sensor (32). The air outlet pipe (30) forms a loop with the upper wind box. The upper support assembly (6) is located above the sludge collection tank (27).

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