Dyeing equipment for dyeing polyester yarn with disperse dye

Abstract

The invention belongs to the technical field of dyeing equipment, and discloses dyeing equipment for dyeing polyester yarns by disperse dyes, which comprises a dyeing cylinder, a pneumatic top cover is arranged on the dyeing cylinder, one side of the dyeing cylinder is communicated with a three-way pipe, the bottom of the three-way pipe is communicated with a dye barrel, and the dyeing equipment further comprises a self-cleaning filter arranged in the three-way pipe. The self-cleaning filter part is arranged in the three-way pipe, when the pneumatic top cover is opened, the lifting assembly can be linked to drive the ring sleeve to move, and the ring sleeve drives the filter cartridge to move upwards to a preset cleaning position through the disc; then the timing control assembly triggers a cleaning water pump to start, the cleaning water pump injects clean water into a metal pipe and a flow guide pipe and then sprays the clean water out through a square pipe to conduct back flushing and dredging on the filter cartridge, impurities and waste water generated by flushing are synchronously discharged through a drainage pipe, manual disassembly and cleaning are not needed, and automatic cleaning can be achieved every time dyeing is completed; the machining efficiency is improved, and continuous machining is facilitated.

Description

Technical Field

[0001] This invention belongs to the field of dyeing equipment technology, specifically a dyeing equipment for dyeing polyester yarn with disperse dyes. Background Technology

[0002] In the field of polyester yarn dyeing and processing, disperse dyes have become the preferred dyes for polyester yarn dyeing due to their good hydrophobicity matching with polyester fibers and excellent color fastness. At present, the industry generally uses package dyeing machines for mass production. During the dyeing process, the disperse dyes need to be evenly delivered to the surface of the yarn through a dye liquor circulation system, and then the dyes are diffused and fixed into the fiber under high temperature conditions to ensure the dyeing effect.

[0003] However, during the dyeing process of disperse dyes, incompletely dissolved dye particles are easily generated, and polyester yarn will shed a small amount of yarn debris under the action of dye liquor rinsing and mechanical friction. If these impurities are not removed in time, they will adhere to the yarn surface with the dye liquor circulation, forming dyeing defects such as color spots and impurity spots. Patent publication number CN210596589U discloses a water-saving and high-efficiency packaged yarn dyeing machine, including a spray dyeing pipe, a bottom main channel pipe and a top main channel pipe. The spray dyeing pipe is set inside the dyeing tank, and the lower end of the spray dyeing pipe passes through the bottom of the dyeing tank and is connected to the left end of the first gear pump. The first gear pump is set below the dyeing tank, and the right end of the first gear pump is connected to the first three-way pipe. The lower side of the first three-way pipe is connected to the left side of the color mixing tank through a return pipe, and a filter bag is set at the connection between the first three-way pipe and the return pipe. The bottom main channel pipe is set at the bottom of the dyeing tank. This water-saving and high-efficiency packaged yarn dyeing machine can filter and reuse the dye liquor, saving water resources.

[0004] The existing technical solutions mentioned above have the following drawbacks: Currently, the filter bags of water-saving and high-efficiency yarn dyeing machines are fixedly installed. After the filter bags become clogged, they need to be manually disassembled and cleaned with tools, which is time-consuming and labor-intensive. This not only interrupts the production process and reduces processing efficiency, but may also cause the temperature inside the dyeing vat to drop due to machine shutdown, making continuous processing inconvenient. Summary of the Invention

[0005] To address the problems mentioned in the background art, the present invention provides a dyeing device for polyester yarn with disperse dyes, including a dyeing vat, a pneumatic top cover on the dyeing vat, a three-way pipe connected to one side of the dyeing vat, and a dye tank connected to the bottom of the three-way pipe, and further comprising: The self-cleaning filter element is installed inside the three-way pipe and is used to automatically filter and clean yarn debris in the dye liquor; The self-cleaning filter includes a guide tube, which is movably connected to the inside of a three-way pipe via a bearing. A square tube is connected to the bottom of the guide tube, a disc is fitted on the square tube, and a filter cylinder is fitted on the disc. A cleaning water pump is fixedly connected to the dye tank, and a metal pipe is connected to the drain end of the cleaning water pump. One end of the metal pipe is fitted onto the guide tube. A ring is fitted on the disc at the top of the filter cylinder, and a lifting assembly is provided on the ring. A timer control assembly connected to the lifting assembly is provided on one side of the dyeing tank, and a drain pipe is connected to one side of the guide tube. As the pneumatic top cover rotates forward / reverse, it drives the lifting assembly to move the filter cylinder along the direction closer to / away from the guide pipe, thereby moving it to / not moving it to the side of the drain pipe. A rotating spray element, mounted on a three-way pipe, is used to improve the backwashing effect of the square pipe on the filter cartridge.

[0006] In the above technical solution, preferably, the lifting assembly includes a top rod fixedly connected to the ring sleeve, the top end of the top rod extending through to the top of the three-way pipe and fixedly connected to a sleeve plate, a concave sleeve fixedly connected to one side of the dyeing cylinder, a trapezoidal rod slidably connected inside the concave sleeve, and the sleeve plate sleeved on the trapezoidal rod. A support rod is fixedly connected to the pneumatic top cover, and an elastic tensile member connected to the support rod is provided on the trapezoidal rod.

[0007] In the above technical solution, preferably, the elastic tensile member includes a rotating plate one sleeved on a trapezoidal rod, a positioning rod fixedly connected to the top of the rotating plate one, a tension spring fixedly connected to the top of the positioning rod, a rotating plate two slidably sleeved on the positioning rod, the top end of the tension spring fixedly connected inside the rotating plate two, and the rotating plate two sleeved on a support rod.

[0008] In the above technical solution, preferably, the timing control component includes a time control switch fixedly connected to the concave sleeve, an L-shaped plate fixedly connected to the bottom of the time control switch, an inclined plate slidably connected inside the L-shaped plate, and a one-way rotating plate hinged to one side of the sleeve plate via a torsion spring hinge.

[0009] In the above technical solution, preferably, two sliding sleeves are symmetrically fixedly connected to the inclined plate, two openings are symmetrically opened on the L-shaped plate, the sliding sleeves are slidably connected inside the openings, a limit rod is fixedly connected inside the openings, the sliding sleeves are slidably sleeved on the limit rods, a spring is fixedly connected to one side of the sliding sleeves, one end of the spring is fixedly connected inside the openings, and the spring is sleeved on the limit rods.

[0010] In the above technical solution, preferably, the rotating spray component includes a motor fixedly connected to a three-way pipe, a worm gear fixedly connected to the output end of the motor, a worm wheel meshing with the worm gear fixedly connected to the guide pipe, a protective sleeve fixedly connected to the three-way pipe, and the protective sleeve being fitted onto the top rod and the guide pipe.

[0011] In the above technical solution, preferably, a support seat is sleeved on the worm gear, the bottom of the support seat is fixedly connected to the tee pipe, and a rubber ring is fixedly connected to one end of the metal pipe, the inner wall of the rubber ring is in contact with the surface of the guide pipe.

[0012] In the above technical solution, preferably, the bottom of the disc is provided with a self-sealing anti-blocking component, the self-sealing anti-blocking component includes a sealing ring fixedly connected to the bottom of the disc, the inner wall of the sealing ring is in contact with the surface of the square tube, the bottom of the ring is fixedly connected with a sealing sleeve, the surface of the sealing sleeve is in contact with the inner wall of the tee tube, and the top of the sealing sleeve is in contact with the bottom of the disc. A spiral plate is fixedly connected to the bottom of the disc, and one side of the spiral plate is in contact with the surface of the filter cylinder.

[0013] In the above technical solution, preferably, the filter cylinder is provided with a baffle mechanism, the baffle mechanism includes an arc-shaped plate fixedly connected to the filter cylinder, a baffle ring fixedly connected to the bottom of the filter cylinder, two bottom rods symmetrically fixedly connected to the bottom of the filter cylinder, a bottom sleeve sleeved on the bottom rod, and one side of the bottom sleeve fixedly connected to the inside of the three-way pipe.

[0014] In the above technical solution, preferably, a retaining ring is fixedly connected to the trapezoidal rod, one side of the retaining ring is in contact with the surface of the sleeve plate, and a diagonal brace is fixedly connected to the right side of the sleeve plate, the top of the diagonal brace is in contact with the bottom of the one-way rotating plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention incorporates a self-cleaning filter element within a three-way pipe. When the pneumatic top cover is opened, it can be linked to a lifting assembly to move a ring sleeve. The ring sleeve, via a disc, drives the filter cylinder upwards to a preset cleaning position. Subsequently, a timer control assembly triggers the start of a cleaning water pump, which injects clean water into the metal pipe and guide pipe, and then sprays it out through a square pipe to backwash and unclog the filter cylinder. Impurities and wastewater generated during rinsing are simultaneously discharged through a drain pipe. This eliminates the need for manual disassembly and cleaning, and the system automatically cleans itself after each dyeing process, improving processing efficiency and preventing downtime due to cleaning, thus facilitating continuous processing.

[0016] Furthermore, while the square tube can spray water for rinsing, the spray angle is fixed, and the backwash water flow can only impact the filter cartridge in a fixed direction, resulting in limited rinsing coverage and the formation of cleaning dead zones. However, through the design of the motor, worm gear, and worm wheel in the rotating spray component, the motor can drive the guide tube and square tube to rotate synchronously through the worm gear and worm wheel, completely eliminating cleaning dead zones and ensuring that all areas of the filter cartridge can be rinsed evenly. This improves the ability to remove stubborn impurities, while the protective sleeve protects the motor and worm gear, preventing impurities from affecting their operation and ensuring the stability and reliability of the rotating spray.

[0017] Furthermore, during the dye liquor filtration process, impurities such as yarn dust and dye particles continuously adhere to the surface of the filter cylinder. These impurities easily accumulate quickly, forming a large-area blockage layer, which affects the dye liquor return speed. However, through the structural design of the sealing ring, sealing sleeve, and spiral plate in the self-sealing anti-blockage component, the spiral plate can rotate synchronously with the disc, continuously rotating and scraping the surface of the filter cylinder, promptly peeling off the newly attached impurities, causing the impurities to fall and accumulate, avoiding the situation of large-area accumulation of impurities in the filter cylinder, and ensuring smooth dye liquor circulation. At the same time, the sealing ring and sealing sleeve can seal the gaps, preventing the dye liquor from flowing into the top of the ring and being discharged from the drain pipe. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional schematic diagram of the drainage pipe of the present invention; Figure 3 This is a cross-sectional schematic diagram of the second rotating plate of the present invention; Figure 4 This is a schematic diagram of the concave sleeve of the present invention; Figure 5 This is a cross-sectional schematic diagram of the protective sleeve of the present invention; Figure 6 This is a cross-sectional schematic diagram of the L-shaped plate of the present invention; Figure 7 This is a schematic diagram of the structure of the sleeve plate of the present invention; Figure 8 This is a schematic diagram of the structure of the filter cartridge of the present invention; Figure 9 For the present invention Figure 2 Enlarged structural diagram at point A in the middle.

[0019] In the diagram: 1. Dyeing vat; 2. Pneumatic top cover; 3. T-pipe; 4. Dye tank; 5. Self-cleaning filter; 51. Guide pipe; 52. Square pipe; 53. Disc; 54. Filter cartridge; 55. Cleaning water pump; 56. Metal pipe; 57. Ring sleeve; 58. Lifting assembly; 581. Top rod; 582. Sleeve plate; 583. Concave sleeve; 584. Trapezoidal rod; 585. Support rod; 586. Elastic tensile component; 5861. Rotating plate one; 5862. Positioning rod; 5863. Tension spring; 5864. Rotating plate two; 59. Timing control assembly; 591. Timer. 592. Switch; 593. L-shaped plate; 594. Inclined plate; 595. One-way rotating plate; 510. Drain pipe; 6. Rotating spray component; 61. Motor; 62. Worm gear; 63. Worm wheel; 64. Protective sleeve; 7. Sliding sleeve; 8. Opening; 9. Limiting rod; 10. Spring; 11. Support base; 12. Rubber ring; 13. Self-sealing anti-clogging component; 131. Sealing ring; 132. Sealing sleeve; 133. Spiral plate; 14. Material blocking mechanism; 141. Arc plate; 142. Material blocking ring; 143. Bottom rod; 144. Bottom sleeve; 15. Retaining ring; 16. Diagonal brace plate. Detailed Implementation

[0020] 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.

[0021] like Figures 1 to 4 As shown, the present invention provides a dyeing device for polyester yarn with disperse dyes, including a dyeing tank 1, a pneumatic top cover 2 on the dyeing tank 1, a three-way pipe 3 connected to one side of the dyeing tank 1, and a dye tank 4 connected to the bottom of the three-way pipe 3, and further including: The self-cleaning filter element 5 is installed inside the three-way pipe 3 and is used to automatically filter and clean the yarn debris in the dye liquor. The self-cleaning filter element 5 includes a guide pipe 51, which is movably connected to the inside of the three-way pipe 3 via a bearing. The bottom of the guide pipe 51 is connected to a square pipe 52, a disc 53 is fitted on the square pipe 52, and a filter cylinder 54 is fitted on the disc 53. A cleaning water pump 55 is fixedly connected to the dye tank 4. The drain end of the cleaning water pump 55 is connected to a metal pipe 56, one end of which is fitted onto the guide pipe 51. A ring 57 located at the top of the filter cylinder 54 is fitted onto the disc 53, and a lifting component 58 is provided on the ring 57. A timer control component 59 connected to the lifting component 58 is provided on one side of the dyeing tank 1. A drain pipe 510 is connected to one side of the guide pipe 51. The pneumatic top cover 2 rotates in the forward / reverse direction, driving the lifting assembly 58 to move the filter cylinder 54 along the direction close to / away from the guide pipe 51, thereby moving it to / not moving it to the side of the drain pipe 510. The rotating spray element 6 is mounted on the three-way pipe 3 to improve the backwashing effect of the square pipe 52 on the filter cylinder 54.

[0022] Specifically, the pneumatic top cover 2 consists of a top cover, a rotating frame, and a cylinder. The cylinder can drive the top cover to rotate forward / backward through the rotating frame. The bottom of the dyeing tank 1 is connected to a circulation pump, and the water inlet of the circulation pump is connected to one side of the dye tank 4 through a connecting pipe. The dye tank 4 is equipped with a stirrer and an electric heating rod, which can heat and stir the dye liquor. The top of the dye tank 4 is connected to a feeding pipe. The water inlet of the cleaning water pump 55 is connected to an external tap water pipe through a connecting pipe. The metal pipe 56 is a stainless steel pipe. The filter cylinder 54 consists of a ring and a filter cylinder. The ring is fixedly connected to the bottom of the filter cylinder, and the surface of the ring is in contact with the inner wall of the three-way pipe 3. The square pipe 52 has several spray holes, and the disc 53 has a square opening. A square sleeve is fixedly connected to the disc 53. The square sleeve is fitted onto the square pipe 52, and the square pipe 52 can drive the disc 53 to rotate through the square opening and the square sleeve.

[0023] like Figures 1 to 3 As shown, the lifting assembly 58 includes a top rod 581 fixedly connected to the ring sleeve 57. The top end of the top rod 581 extends through to the top of the three-way pipe 3 and is fixedly connected to a sleeve plate 582. A concave sleeve 583 is fixedly connected to one side of the dyeing cylinder 1. A trapezoidal rod 584 is slidably connected inside the concave sleeve 583. The sleeve plate 582 is sleeved on the trapezoidal rod 584. A support rod 585 is fixedly connected to the pneumatic top cover 2, and an elastic tensile member 586 connected to the support rod 585 is provided on the trapezoidal rod 584.

[0024] Specifically, both the concave sleeve 583 and the trapezoidal rod 584 are made of stainless steel. The concave sleeve 583 can limit and guide the trapezoidal rod 584 to prevent it from shaking when moving, and at the same time prevent the trapezoidal rod 584 from moving too far upward, so as to ensure the accurate positioning of the filter cartridge 54 in the filtration and cleaning station.

[0025] like Figures 1 to 3 As shown, the elastic tensile member 586 includes a rotating plate 5861 sleeved on a trapezoidal rod 584. A positioning rod 5862 is fixedly connected to the top of the rotating plate 5861. A tension spring 5863 is fixedly connected to the top of the positioning rod 5862. A rotating plate 5864 is slidably sleeved on the positioning rod 5862. The top end of the tension spring 5863 is fixedly connected to the inside of the rotating plate 5864. The rotating plate 5864 is sleeved on a support rod 585.

[0026] Specifically, through the elastic extension and contraction characteristics of the tension spring 5863, even if the rotation angle of the pneumatic top cover 2 has too large or too small deviation, the tension spring 5863 can compensate by stretching or contracting, always providing a stable and appropriate tension, ensuring that the trapezoidal rod 584 can slide precisely into place, thereby driving the filter cartridge 54 to rise and fall reliably. At the same time, the tension spring 5863 can buffer the impact of lifting and falling, avoid rigid collision and wear of components, and has a compact structure and smooth transmission.

[0027] like Figures 4 to 7 As shown, the timing control component 59 includes a time control switch 591 fixedly connected to the concave sleeve 583. An L-shaped plate 592 is fixedly connected to the bottom of the time control switch 591. An inclined plate 593 is slidably connected inside the L-shaped plate 592. A one-way rotating plate 594 is hinged to one side of the sleeve 582 via a torsion spring hinge.

[0028] Specifically, the time control switch 591 is a microcomputer time control switch; one side of the inclined plate 593 contacts the control button of the time control switch 591. When the sleeve plate 582 drives the one-way rotating plate 594 to move upward with the trapezoidal rod 584, the one-way rotating plate 594 slides along the inclined plate 593 and pushes it to trigger the control button of the time control switch 591, starting the cleaning water pump 55 for backwashing. The one-way rotation design, combined with the torsion spring hinge, effectively avoids accidental triggering during the return stroke. The sliding adaptability of the inclined plate 593 ensures that the triggering action is stable and without deviation. Timed automatic cleaning can be completed without manual intervention, improving the degree of production automation and adapting to continuous processing needs.

[0029] like Figure 7 As shown, two sliding sleeves 7 are symmetrically fixedly connected to the inclined plate 593, and two openings 8 are symmetrically opened on the L-shaped plate 592. The sliding sleeves 7 are slidably connected inside the openings 8, and a limiting rod 9 is fixedly connected inside the openings 8. The sliding sleeves 7 are slidably sleeved on the limiting rod 9. A spring 10 is fixedly connected to one side of the sliding sleeves 7, and one end of the spring 10 is fixedly connected inside the openings 8. The spring 10 is sleeved on the limiting rod 9.

[0030] Specifically, the sliding sleeve 7 and the opening 8 can limit the tilting plate 593 to prevent it from detaching from the L-shaped plate 592. The spring 10 can drive the tilting plate 593 to quickly reset, ensuring accurate triggering next time. The limit rod 9 can prevent the spring 10 from twisting or deforming.

[0031] like Figure 5 As shown, the rotating spray component 6 includes a motor 61 fixedly connected to the three-way pipe 3, a worm gear 62 fixedly connected to the output end of the motor 61, a worm wheel 63 meshing with the worm gear 62 fixedly connected to the guide pipe 51, and a protective sleeve 64 fixedly connected to the three-way pipe 3. The protective sleeve 64 is fitted onto the top rod 581 and the guide pipe 51.

[0032] Specifically, motor 61 is a miniature waterproof motor; motor 61 can drive the guide pipe 51 and square pipe 52 to rotate synchronously through worm 62 and worm wheel 63, completely eliminating cleaning dead corners and ensuring that all areas of filter cartridge 54 can be rinsed evenly; improving the ability to peel off stubborn impurities, while the protective sleeve 64 protects motor 61 and worm 62 to prevent impurities from affecting their operation and ensure stable and reliable rotary spraying.

[0033] like Figures 3 to 5 As shown, a support seat 11 is sleeved on the worm gear 62. The bottom of the support seat 11 is fixedly connected to the three-way pipe 3. A rubber ring 12 is fixedly connected to one end of the metal pipe 56. The inner wall of the rubber ring 12 is in contact with the surface of the guide pipe 51.

[0034] Specifically, the support seat 11 can support one end of the worm 62, improving the stability of the worm 62 during rotation, and the rubber ring 12 seals the gap between the metal tube 56 and the guide tube 51 to prevent water from flowing out through the gap.

[0035] like Figures 7 to 9 As shown, a self-sealing anti-blocking component 13 is provided at the bottom of the disc 53. The self-sealing anti-blocking component 13 includes a sealing ring 131 fixedly connected to the bottom of the disc 53. The inner wall of the sealing ring 131 is in contact with the surface of the square tube 52. A sealing sleeve 132 is fixedly connected to the bottom of the ring 57. The surface of the sealing sleeve 132 is in contact with the inner wall of the three-way tube 3. The top of the sealing sleeve 132 is in contact with the bottom of the disc 53. A spiral plate 133 is fixedly connected to the bottom of the disc 53, and one side of the spiral plate 133 is in contact with the surface of the filter cylinder 54.

[0036] Specifically, the spiral plate 133 can rotate synchronously with the disc 53 to continuously rotate and scrape the surface of the filter cylinder 54, promptly peeling off the newly attached impurities, causing the impurities to fall and accumulate, avoiding the situation of large-area accumulation of impurities in the filter cylinder 54, and ensuring smooth circulation of dye liquor; at the same time, the sealing ring 131 and the sealing sleeve 132 can seal the gaps to prevent dye liquor from flowing into the top of the ring sleeve 57 and being discharged from the drain pipe 510.

[0037] like Figure 2 and Figure 8 As shown, a baffle mechanism 14 is provided on the filter cylinder 54. The baffle mechanism 14 includes an arc plate 141 fixedly connected to the filter cylinder 54, a baffle ring 142 fixedly connected to the bottom of the filter cylinder 54, and two bottom rods 143 symmetrically fixedly connected to the bottom of the filter cylinder 54. A bottom sleeve 144 is fitted on the bottom rod 143, and one side of the bottom sleeve 144 is fixedly connected to the inside of the three-way pipe 3.

[0038] Specifically, the arc plate 141 can protect the impurities accumulated on the filter cylinder 54, preventing the impurities from falling back into the air inside the dyeing tank 1 when the filter cylinder 54 moves upward. The baffle ring 142 can seal any gaps that may exist between the filter cylinder 54 and the drain pipe 510 after the filter cylinder 54 moves to a suitable position, preventing impurities from flowing back into the interior of the three-way pipe 3. The bottom rod 143 and the bottom sleeve 144 can limit the filter cylinder 54 to prevent the filter cylinder 54 from rotating.

[0039] like Figure 7 As shown, a retaining ring 15 is fixedly connected to the trapezoidal rod 584. One side of the retaining ring 15 is in contact with the surface of the sleeve plate 582. A diagonal brace 16 is fixedly connected to the right side of the sleeve plate 582. The top of the diagonal brace 16 is in contact with the bottom of the one-way rotating plate 594.

[0040] Specifically, the bottom of the one-way rotating plate 594 is chamfered to ensure that the one-way rotating plate 594 will not collide with the diagonal brace plate 16 when rotating; the retaining ring 15 can limit the sleeve plate 582 to prevent the sleeve plate 582 from detaching from the trapezoidal rod 584, while the diagonal brace plate 16 can support the one-way rotating plate 594 and improve the compressive strength of the one-way rotating plate 594.

[0041] Working principle and usage process of this invention: In use, the polyester yarn bobbin is first hoisted into the dyeing tank 1 through the external dyeing rack, the pneumatic top cover 2 is closed and sealed, and the disperse dye inside the dye tank 4 is driven by the circulation pump to circulate along the dyeing tank 1 and the three-way pipe 3. When it flows through the filter cylinder 54, the filter cylinder 54 intercepts impurities such as yarn debris and undissolved dye particles in the dye liquor, ensuring that the clean dye liquor is in full contact with the yarn and ensuring dyeing uniformity. The motor 61 is started, and the motor 61 drives the guide pipe 51 to rotate through the worm 62 and the worm wheel 63. The guide pipe 51 drives the spiral plate 133 to rotate through the square pipe 52 and the disc 53. The spiral plate 133 continuously scrapes the surface of the filter cylinder 54 to remove the newly attached impurities in time and avoid large-area blockage. After dyeing is completed, the pneumatic top cover 2 is activated to prepare to lift out the dyeing rack and polyester yarn bobbin. When the pneumatic top cover 2 is rotated open, the support rod 585 on it synchronously drives the rotating plate 2 5864 to move. The rotating plate 2 5864 pulls the rotating plate 1 5861 to move through the tension spring 5863 and the positioning rod 5862. The rotating plate 1 5861 drives the trapezoidal rod 584 to slide upward along the concave sleeve 583. The trapezoidal rod 584 drives the sleeve plate 582 and the top rod 581 to move upward. The top rod 581 drives the filter cylinder 54 to move upward to the preset cleaning position and align it with the drain pipe 510 through the ring sleeve 57 and the disc 53. As the filter cartridge 54 reaches the cleaning position, the sleeve plate 582 drives the one-way rotating plate 594 to move along the trapezoidal rod 584. The one-way rotating plate 594 slides along the inclined plate 593 and pushes it to trigger the control button of the time control switch 591. The time control switch 591 starts the cleaning water pump 55. Clean water is injected into the guide pipe 51 through the metal pipe 56 and then sprayed out through the square pipe 52. The square pipe 52 rotates to achieve full-area spraying, thoroughly eliminating cleaning dead corners. Impurities and wastewater generated by backwashing are discharged synchronously through the drain pipe 510 without manual disassembly and cleaning. The automatic cleaning can be completed in the time it takes for the polyester yarn bobbin dyeing rack to be hoisted out and hoisted in, without taking up extra production time, which is convenient for continuous processing.

[0042] 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.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dyeing device for polyester yarn with disperse dyes, comprising a dyeing vat (1), wherein a pneumatic top cover (2) is provided on the dyeing vat (1), a three-way pipe (3) is connected to one side of the dyeing vat (1), and a dye barrel (4) is connected to the bottom of the three-way pipe (3), characterized in that, Also includes: The self-cleaning filter element (5) is installed inside the three-way pipe (3) and is used to automatically filter and clean the yarn debris in the dye liquor; The self-cleaning filter element (5) includes a guide pipe (51), which is movably connected to the inside of the three-way pipe (3) via a bearing. The bottom of the guide pipe (51) is connected to a square pipe (52), a disc (53) is fitted on the square pipe (52), and a filter cylinder (54) is fitted on the disc (53). A cleaning water pump (55) is fixedly connected to the dye tank (4), and a metal pipe (56) is connected to the drain end of the cleaning water pump (55). One end of the metal pipe (56) is fitted on the guide pipe (51). A ring (57) is fitted on the disc (53) at the top of the filter cylinder (54). A lifting component (58) is provided on the ring (57). A timer control component (59) connected to the lifting component (58) is provided on one side of the dyeing tank (1). A drain pipe (510) is connected to one side of the guide pipe (51). As the pneumatic top cover (2) rotates in the forward / reverse direction, the lifting assembly (58) drives the filter cylinder (54) to move in the direction close to / away from the guide pipe (51), thereby moving to / not moving to the side of the drain pipe (510); A rotating spray element (6) is installed on a three-way pipe (3) to improve the backwashing effect of the square pipe (52) on the filter cartridge (54).

2. The dyeing equipment for polyester yarn with disperse dyes according to claim 1, characterized in that: The lifting assembly (58) includes a top rod (581) fixedly connected to the ring sleeve (57), the top end of the top rod (581) extends through to the top of the three-way pipe (3) and is fixedly connected to a sleeve plate (582), a concave sleeve (583) is fixedly connected to one side of the dyeing cylinder (1), a trapezoidal rod (584) is slidably connected inside the concave sleeve (583), and the sleeve plate (582) is sleeved on the trapezoidal rod (584); A support rod (585) is fixedly connected to the pneumatic top cover (2), and an elastic tensile member (586) connected to the support rod (585) is provided on the trapezoidal rod (584).

3. The dyeing equipment for polyester yarn with disperse dyes according to claim 2, characterized in that: The elastic tensile member (586) includes a rotating plate one (5861) sleeved on a trapezoidal rod (584), a positioning rod (5862) fixedly connected to the top of the rotating plate one (5861), a tension spring (5863) fixedly connected to the top of the positioning rod (5862), a rotating plate two (5864) slidably sleeved on the positioning rod (5862), the top end of the tension spring (5863) fixedly connected to the inside of the rotating plate two (5864), and the rotating plate two (5864) sleeved on a support rod (585).

4. The dyeing equipment for polyester yarn with disperse dyes according to claim 3, characterized in that: The timing control component (59) includes a time control switch (591) fixedly connected to a concave sleeve (583), an L-shaped plate (592) fixedly connected to the bottom of the time control switch (591), an inclined plate (593) slidably connected inside the L-shaped plate (592), and a one-way rotating plate (594) hinged to one side of the sleeve plate (582) by a torsion spring hinge.

5. The dyeing equipment for polyester yarn with disperse dyes according to claim 4, characterized in that: Two sliding sleeves (7) are symmetrically fixedly connected to the inclined plate (593). Two openings (8) are symmetrically opened on the L-shaped plate (592). The sliding sleeves (7) are slidably connected inside the openings (8). A limiting rod (9) is fixedly connected inside the openings (8). The sliding sleeves (7) are slidably sleeved on the limiting rod (9). A spring (10) is fixedly connected to one side of the sliding sleeves (7). One end of the spring (10) is fixedly connected inside the openings (8). The spring (10) is sleeved on the limiting rod (9).

6. The dyeing equipment for polyester yarn with disperse dyes according to claim 1, characterized in that: The rotating spray component (6) includes a motor (61) fixedly connected to a three-way pipe (3), a worm gear (62) fixedly connected to the output end of the motor (61), a worm wheel (63) meshing with the worm gear (62) fixedly connected to the guide pipe (51), and a protective sleeve (64) fixedly connected to the three-way pipe (3). The protective sleeve (64) is fitted onto the top rod (581) and the guide pipe (51).

7. The dyeing equipment for polyester yarn with disperse dyes according to claim 6, characterized in that: A support seat (11) is fitted on the worm (62). The bottom of the support seat (11) is fixedly connected to the three-way pipe (3). A rubber ring (12) is fixedly connected to one end of the metal pipe (56). The inner wall of the rubber ring (12) is in contact with the surface of the guide pipe (51).

8. The dyeing equipment for polyester yarn with disperse dyes according to claim 1, characterized in that: The bottom of the disc (53) is provided with a self-sealing anti-blocking component (13), which includes a sealing ring (131) fixedly connected to the bottom of the disc (53). The inner wall of the sealing ring (131) is in contact with the surface of the square tube (52). The bottom of the ring (57) is fixedly connected with a sealing sleeve (132). The surface of the sealing sleeve (132) is in contact with the inner wall of the three-way tube (3), and the top of the sealing sleeve (132) is in contact with the bottom of the disc (53). A spiral plate (133) is fixedly connected to the bottom of the disc (53), and one side of the spiral plate (133) is in contact with the surface of the filter cylinder (54).

9. The dyeing equipment for polyester yarn with disperse dyes according to claim 1, characterized in that: The filter cylinder (54) is provided with a baffle mechanism (14), which includes an arc plate (141) fixedly connected to the filter cylinder (54), a baffle ring (142) fixedly connected to the bottom of the filter cylinder (54), and two bottom rods (143) symmetrically fixedly connected to the bottom of the filter cylinder (54). A bottom sleeve (144) is fitted on the bottom rod (143), and one side of the bottom sleeve (144) is fixedly connected to the inside of the three-way pipe (3).

10. A dyeing apparatus for polyester yarn with disperse dyes according to claim 4, characterized in that: A retaining ring (15) is fixedly connected to the trapezoidal rod (584). One side of the retaining ring (15) is in contact with the surface of the sleeve plate (582). A diagonal brace (16) is fixedly connected to the right side of the sleeve plate (582). The top of the diagonal brace (16) is in contact with the bottom of the one-way rotating plate (594).

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