Intelligent waste gas treatment equipment and process based on blended composite fabric dyeing

Abstract

This invention discloses an intelligent waste gas treatment device and process for dyeing blended composite fabrics, relating to the field of waste gas treatment technology. It includes a spray cooling tower, an electrostatic precipitator, a photocatalytic oxidation reactor, an activated carbon adsorber, and a main fan module connected in sequence. The key feature is that a multi-stage filter box mechanism for backflushing and cleaning filter plate lint is provided between the spray cooling tower and the electrostatic precipitator. This mechanism includes a reciprocating backflushing unit and a graded baffle unit. The reciprocating backflushing unit contains a filter box with three-stage filter plates. A limiting shell is provided at the top of the filter box. The reciprocating drive assembly uses a worm gear to drive a reciprocating gear to mesh with a reciprocating rack, converting rotational motion into linear reciprocating motion. This drives a wind box with pulse nozzles to move up and down at a uniform speed, coordinating with high-pressure hot air to achieve full-width pulse backflushing of the filter plates, thoroughly removing attached lint without requiring manual cleaning, stabilizing system air resistance, and ensuring continuous equipment operation.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment technology, specifically to an intelligent waste gas treatment device and process for dyeing blended composite fabrics. Background Technology

[0002] Blended composite fabrics, as highly innovative and practical materials in the textile industry, are shining brightly in various fields such as clothing, home furnishings, and industrial textiles due to their unique performance advantages. They are made by combining two or more different fibers through a specific process, cleverly integrating the advantages of each component fiber.

[0003] According to the patent titled "A Waste Gas Treatment Equipment for the Textile Printing and Dyeing Industry" (Patent Publication No.: CN110215791A, Patent Publication Date: 2019-09-10), it includes a filtration unit, a heat exchange unit, and a swirling tower. The filtration unit includes a first automatic filtration device and a second automatic filtration device. The heat exchange unit includes a high-temperature gas-water heat exchange device and a low-temperature gas-water heat exchange device connected to each other. The swirling tower is connected to the end of the low-temperature gas-water heat exchange device. Its end is connected in series along the direction of waste gas flow, including an electrostatic adsorption tower, an aluminum profile liquid removal tank, a dual-media barrier deodorization device, and a white vapor removal unit. The white vapor removal unit includes a first-stage high-temperature water white vapor removal device and a second-stage steam white vapor removal device. A circulating water pipeline is provided between the high-temperature gas-water heat exchange device and the first-stage high-temperature white vapor removal device. The waste gas passes through the filtration unit, heat exchange unit, swirling tower, electrostatic adsorption tower, aluminum profile liquid removal tank, dual-media barrier deodorization device, and white vapor removal unit in sequence. The purification coverage is wide, the purification effect is excellent, and it achieves colorless and odorless emissions.

[0004] Based on the aforementioned existing technologies, the current intelligent waste gas treatment equipment and processes for dyeing blended composite fabrics still have the following problems: the pre-filter section of the existing equipment can only achieve basic lint interception and cannot clean the lint adhering to the filter plate surface or even adhering due to oil mist. After the filter plate is blocked, the system wind resistance will increase sharply and the treatment efficiency will decrease significantly. It is necessary to stop the machine and manually disassemble and clean it, which will increase the operation and maintenance costs and seriously affect the continuous operation capability of the dyeing and printing production line and the waste gas treatment system. Therefore, the present invention provides an intelligent waste gas treatment equipment and process for dyeing blended composite fabrics. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an intelligent waste gas treatment device and process for dyeing blended composite fabrics. It solves the problem that existing pre-filters can only intercept basic lint and cannot remove lint that adheres to the filter plate due to oil mist, leading to blockages that require manual cleaning after shutdown, increasing maintenance costs and affecting continuous system operation.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an intelligent waste gas treatment device for dyeing blended composite fabrics, comprising a spray cooling tower, an electrostatic oil and dust collector, a photocatalytic oxidation reactor, an activated carbon adsorber, and a main fan module connected in sequence. A multi-stage filter box mechanism for backwashing and cleaning filter plate lint is provided between the spray cooling tower and the electrostatic oil and dust collector. This mechanism includes: The reciprocating backwash unit contains a filter box with three-stage filter plates. The top of the filter box is equipped with a limiting shell, and a reciprocating rack slides within the limiting shell. The bottom of the reciprocating rack is fixedly and sealed to an air box that extends into the filter box. The air box is equipped with several pulse air nozzles. Air is supplied to the air box through the air flushing component and backwashes the filter plates under high pressure through the air nozzles. The reciprocating drive component drives the rack to move the air box up and down reciprocally, thereby realizing the reciprocating backwashing of the filter plates. The grading and baffle unit is located below the reciprocating backwash unit and is used to grade and baffle the three-stage filter plates to achieve independent backwash cleaning of each filter plate.

[0007] Preferably, the air-flushing assembly includes a hot air blower and a compressor fixedly installed on the front side of the filter box, and the hot air blower and the compressor are connected and installed in communication. The output end of the compressor is fixedly installed with a main air duct, and three branch air ducts are fixedly installed on the main air duct. One end of the branch air duct is inserted into the limiting shell and passes through the reciprocating rack, the top box and the air box for fixed connection. Two brackets are fixedly installed on the top of the filter box for supporting the main air duct.

[0008] Preferably, the graded isolation unit further includes a recycling unit, which includes a bag filter module, a main suction pipe and three branch suction pipes. The main suction pipe is connected to the input end of the bag filter module, and the branch suction pipes are fixedly installed on the main suction pipe, with one end inserted into the interior of the filter box.

[0009] Preferably, the reciprocating drive assembly includes a mounting housing fixedly mounted on the top box, a rotating shaft rotatably mounted inside the mounting housing, a worm gear and a reciprocating gear fixedly mounted on the rotating shaft, the reciprocating gear meshing with a reciprocating rack, a worm rotatably mounted inside the mounting housing, the worm meshing with a worm gear, and a first motor fixedly mounted on one side of the mounting housing, with its output end penetrating into the interior of the mounting housing and fixedly connected to the worm.

[0010] Preferably, the graded partition unit includes two first frames and a second frame fixedly installed inside the filter box. A third filter plate and a second filter plate are respectively inserted and installed in the left side groove of the two first frames. A first filter plate is inserted and installed inside the second frame. Sealing gaskets are provided on both sides of the third filter plate, the second filter plate and the first filter plate to achieve sealing.

[0011] Preferably, two partition plates are slidably installed in the internal through groove of the first frame, and a linkage seat is fixedly installed at the bottom of the partition plate. The linkage seat slides inside the bottom groove of the first frame. The linkage reset component is driven by the graded drive component to drive the two linkage seats to move synchronously towards each other and in opposite directions, thereby blocking the right side of the third filter plate and the second filter plate.

[0012] Preferably, the linkage reset assembly includes a mounting bracket fixedly installed at the bottom of the filter box, and two central gears are rotatably mounted on the mounting bracket. A first limit bracket and a second limit bracket are fixedly installed at the bottom of the filter box. A first slider is slidably mounted on the first limit bracket, and a second slider is slidably mounted on the second limit bracket. A first rack and a second rack are fixedly mounted on the inner sides of the first and second sliders, respectively, and their outer ends are fixedly connected to the two linkage seats. The first rack and the second rack are both meshed with the central gears. The rotation of the central gears drives the first rack and the second rack to move towards each other. A first spring and a second spring are respectively installed on the crossbars of the first and second limit brackets, and the first rack and the second rack are reset by their own elasticity.

[0013] Preferably, the graded drive assembly includes left and right slides fixedly mounted on the mounting frame, and upper and lower slides are slidably mounted inside the left and right slides, and upper and lower sliders are slidably mounted inside the upper and lower slides, and a graded rack is fixedly mounted on the rear side of the upper and lower sliders, wherein the graded rack meshes with the central gear.

[0014] Preferably, the graded drive assembly further includes a fixed plate fixedly mounted on the mounting frame, and a main sprocket and a secondary sprocket are rotatably mounted on the rear side of the fixed plate, and a chain is installed between the main sprocket and the secondary sprocket. A connecting post is fixedly mounted on the rear side of the chain, and the rear end of the connecting post is rotatably connected to the upper and lower sliders, so that the upper and lower sliders move along the path of the chain. A second motor is fixedly mounted on the front side of the fixed plate, and the output end of the second motor passes through the fixed plate and is fixedly connected to the main sprocket.

[0015] This invention also discloses an intelligent treatment process for waste gas from dyeing blended composite fabrics, comprising the following steps: S1: The waste gas generated from dyeing blended composite fabrics is passed into a spray cooling tower for spray cooling treatment. The cooled waste gas is then sent into the filter box of the multi-stage filter box mechanism, where the three-stage filter plates built into the filter box filter and intercept the lint and impurities in the waste gas. S2: When the filter plates need to be backwashed, the three-stage filter plates are graded and separated by the grading and blocking unit to form an independent backwashing chamber for each filter plate. S3: High-pressure airflow is supplied to the air box through the air flushing component. The high-pressure airflow is sprayed onto the surface of the filter plate behind the corresponding partition through the pulse nozzle on the air box, and the lint attached to the filter plate is removed by backflushing. At the same time, the reciprocating drive component drives the reciprocating rack to slide along the limiting shell in a limited reciprocating motion, which drives the air box to move up and down reciprocally, so as to achieve full-width reciprocating backflushing cleaning of the filter plate. S4: The exhaust gas, after being filtered by the multi-stage filtration system, is sequentially passed through the electrostatic oil and dust collector, the photocatalytic oxidation reactor, and the activated carbon adsorber for deep purification, and finally discharged through the main fan module to meet the standards.

[0016] This invention provides an intelligent waste gas treatment device and process for dyeing blended composite fabrics. Compared with the prior art, it has the following advantages: 1. This intelligent waste gas treatment equipment and process based on the dyeing of blended composite fabrics uses a worm gear drive of the reciprocating drive component to drive the reciprocating gear to mesh with the reciprocating rack, converting the rotary motion into linear reciprocating motion, driving the air box with pulse nozzles to move up and down at a uniform speed, and cooperating with high-pressure hot air to achieve full-width pulse backwashing of the filter plate, completely removing the attached lint, eliminating the need for manual cleaning and stabilizing the system air resistance, ensuring continuous operation of the equipment.

[0017] 2. This intelligent waste gas treatment equipment and process based on the dyeing of blended composite fabrics uses a graded drive component to drive the linkage reset component to drive the partition plate to open and close synchronously. It seals and separates the three-stage filter plates in stages, forming an independent backwash chamber for each filter plate. This avoids airflow interference, secondary pollution, or even reverse pollution of other filter plates. It ensures stable and concentrated backwash air pressure, greatly improves the lint removal rate, achieves precise uninterrupted cleaning, and ensures continuous and stable operation of the waste gas treatment system. 3. This intelligent waste gas treatment equipment and process based on the dyeing of blended composite fabrics utilizes a second motor in a graded drive assembly to drive the main sprocket, secondary sprocket, and chain. Through connecting columns, the upper and lower sliders move along a rectangular path on the chain, causing the graded racks to sequentially engage or disengage with different central gears. When the central gear rotates, it drives the first and second racks to move towards each other, causing the separator plates to seal the corresponding filter plates. After backflushing, the first and second springs, relying on their own elasticity, push the first and second sliders back to their original positions, achieving automatic return of the separator plates. This sequential control mechanism enables the three-stage filter plates to undergo alternating backflushing without shutting down the system, ensuring the long-term continuous and stable operation of the waste gas treatment equipment. Attached Figure Description

[0018] Figure 1 This is a frontal perspective view of the three-dimensional structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the multi-stage filter box mechanism of the present invention; Figure 3 This is a cross-sectional perspective view of the multi-stage filter box mechanism of the present invention, showing the hidden filter screen in three dimensions. Figure 4 This is a partial cross-sectional three-dimensional structural diagram of the reciprocating recoil unit of the present invention; Figure 5 This is a partial cross-sectional right-side perspective view of the reciprocating recoil unit of the present invention; Figure 6 This is a partial cross-sectional left-side perspective view of the reciprocating recoil unit of the present invention; Figure 7 This is a right-side perspective view of the hidden filter structure of the graded barrier unit of the present invention. Figure 8 This is a right-side perspective view of the three-screen structure of the present invention; Figure 9 This is a three-dimensional structural diagram of the linkage reset component of the present invention; Figure 10 This is a three-dimensional structural diagram of the hierarchical driving component of the present invention.

[0019] In the diagram: 11. Spray cooling tower; 12. Electrostatic oil and dust removal device; 13. Photocatalytic oxidation reactor; 14. Activated carbon adsorber; 15. Main fan module; 2. Multi-stage filter box mechanism; 21. Reciprocating backflushing unit; 211. Filter box; 212. Bottom box; 213. Top box; 214. Limiting shell; 215. Reciprocating rack; 216. Air box; 217. Rubber ring; 218. Pulse nozzle; 22. Graded partition unit; 221. First frame; 222. Sealing gasket; 223. Partition plate; 224. Linkage seat; 225. Second frame; 226. First filter plate; 227. Second filter plate; 228. Third filter plate; 3. Air flushing assembly; 31. Hot air blower; 32. Compressor; 33. Main air duct; 34. Branch air duct; 35. Support frame; 4. Recycling unit; 41. Bag dust collection module; 42. Main suction pipe; 43. Suction branch pipe; 5. Reciprocating drive assembly; 51. Mounting housing; 52. Rotating shaft; 53. Worm gear; 54. Reciprocating gear; 55. Worm; 56. First motor; 6. Linkage reset assembly; 61. Mounting bracket; 62. Central gear; 63. First limit bracket; 64. First slider; 65. First spring; 66. First rack; 67. Second limit bracket; 68. Second slider; 69. Second spring; 610. Second rack; 7. Grading drive assembly; 71. Left and right slides; 72. Upper and lower slides; 73. Upper and lower sliders; 74. Grading rack; 75. Fixing plate; 76. Main sprocket; 77. Secondary sprocket; 78. Chain; 79. Second motor; 710. Connecting column. 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1-10 The present invention provides a technical solution: A smart waste gas treatment device and process for dyeing blended composite fabrics includes a spray cooling tower 11, an electrostatic oil and dust collector 12, a photocatalytic oxidation reactor 13, an activated carbon adsorber 14, and a main fan module 15 connected in sequence. A multi-stage filter box mechanism 2 for backwashing and cleaning of filter plate lint is provided between the spray cooling tower 11 and the electrostatic oil and dust collector 12. This mechanism includes: The reciprocating backwash unit includes a filter box 211 with three-stage filter plates. The top of the filter box 211 is provided with a limiting shell 214. A reciprocating rack 215 slides within the limiting shell 214. The bottom of the reciprocating rack 215 is fixedly and sealed to an air box 216 that extends into the filter box 211. The air box 216 is provided with several pulse nozzles 218. Air is supplied to the air box 216 through the air flushing assembly 3 and backwashes the filter plates under high pressure through the nozzles. The reciprocating drive assembly 5 drives the rack to move the air box 216 up and down reciprocally, thereby realizing the reciprocating backwashing of the filter plates. The grading and blocking unit 22 is located below the reciprocating backwashing unit 21 and is used to grade and block the three-stage filter plates to achieve independent backwashing cleaning of each filter plate.

[0022] The spray cooling tower 11, model PT-5000 PP spray tower, has built-in multi-faceted hollow spherical packing and is equipped with an ISG25-125 0.75kW circulating water pump, which is installed at the exhaust gas inlet at the front end of the system. Electrostatic oil and dust removal device 12, model JD-YW-5000 industrial electrostatic oil removal equipment; Photocatalytic oxidation reactor 13, model GY-5000 UV photocatalytic oxidation equipment; Activated carbon adsorber 14, model HXT-5000 honeycomb activated carbon adsorption box; Main fan module 15, model is centrifugal induced draft fan 4-72-5A; The 218 model pulse nozzle is a 304 stainless steel high-pressure pulse nozzle. Valves are installed on the connecting pipes at both ends of filter box 211. Double-acting pneumatic flange-type centerline soft-seal butterfly valves are used. When the valves are open, exhaust gas is treated, and when they are closed, backwashing is performed. The multi-stage filter box mechanism 2 is connected to an external PLC controller. The PLC controller model is Siemens S7-200 SMART CPU SR40. The PLC controls the start and stop of corresponding solenoid valves, motors, hot air blowers and other components according to a preset program to realize the fully automatic operation of the backwashing process. The solenoid valve group controls the opening and closing of the corresponding air path to ensure that the corresponding air path is open when a single filter plate is backwashed, and the other air paths are closed.

[0023] In this embodiment, the air-flushing assembly 3 includes a hot air blower 31 and a compressor 32 fixedly installed on the front side of the filter box 211, and the hot air blower 31 and the compressor 32 are connected and installed together. The output end of the compressor 32 is fixedly installed with a main air duct 33, and three branch air ducts 34 are fixedly installed on the main air duct 33. One end of the branch air duct 34 is inserted into the limiting shell 214 and passes through the reciprocating rack 215, the top box 213 and the air box 216 for fixed connection. Two brackets 35 are fixedly installed on the top of the filter box 211 for supporting the main air duct 33.

[0024] The three branch ducts 34 are equipped with a first intake solenoid valve, a second intake solenoid valve, and a third intake solenoid valve, respectively, from right to left. The exhaust solenoid valve is a stainless steel solenoid ball valve Q911F-16P. The hot air blower 31 is an industrial hot air blower 31HAG-HP3A-21, and the compressor 32 is a scroll air compressor OX-0.66 / 8; these provide a stable high-pressure hot air source for pulse backflushing, and simultaneously control the on / off of each branch duct 34 independently through solenoid valves, achieving selective opening of the air path during single filter plate backflushing, avoiding airflow waste and crosstalk.

[0025] In this embodiment, the graded partition unit 22 also includes a recycling unit 4, which includes a bag filter module 41, a main suction pipe 42 and three suction branch pipes 43. The main suction pipe 42 is connected to the input end of the bag filter module 41, and the suction branch pipes 43 are fixedly installed on the main suction pipe 42, with one end inserted into the interior of the filter box 211.

[0026] The three intake manifolds 43 are equipped with a first exhaust solenoid valve, a second exhaust solenoid valve and a third exhaust solenoid valve from right to left.

[0027] The exhaust solenoid valve is a stainless steel solenoid ball valve, model Q911F-16P.

[0028] The bag filter module 41, model DMC-24, is equipped with a 1.1kW induced draft fan and is connected to the filter box 211 through the main suction pipe 42 and the branch suction pipe 43. It is installed on the outside of the filter box 211.

[0029] To prevent lint from settling again inside the filter box 211, and to ensure that the corresponding air path is opened only when the corresponding filter plate is backflushed through independent control of the exhaust solenoid valve, the recovery efficiency is improved.

[0030] In this embodiment, the reciprocating drive assembly 5 includes a mounting shell 51 fixedly mounted on the top box 213. A rotating shaft 52 is rotatably mounted inside the mounting shell 51, and a worm gear 53 and a reciprocating gear 54 are fixedly mounted on the rotating shaft 52. The reciprocating gear 54 meshes with a reciprocating rack 215. A worm 55 is rotatably mounted inside the mounting shell 51, and the worm 55 meshes with the worm gear 53. A first motor 56 is fixedly mounted on one side of the mounting shell 51, and its output end penetrates into the interior of the mounting shell 51 and is fixedly connected to the worm 55.

[0031] The first motor 56 is a stepper motor 42BYGH4818. The first motor 56 drives the worm gear 55 and worm wheel 53 to reduce speed and increase torque and lock itself, which drives the reciprocating gear 54 to precisely mesh with the reciprocating rack 215, converting the rotational motion into vertical linear reciprocating motion, driving the air box 216 to move up and down at a uniform speed, realizing pulse backwashing across the entire width of the filter plate without blind spots, and greatly improving the cleaning efficiency.

[0032] In this embodiment, the graded partition unit 22 includes two first frames 221 and a second frame 225 fixedly installed inside the filter box 211. A third filter plate 228 and a second filter plate 227 are respectively inserted and installed in the left groove of the two first frames 221. A first filter plate 226 is inserted and installed inside the second frame 225. Sealing gaskets 222 are provided on both sides of the third filter plate 228, the second filter plate 227 and the first filter plate 226 to achieve sealing.

[0033] The third filter plate 228, the second filter plate 227, and the first filter plate 226 are PTFE-coated stainless steel filter plates. They are arranged sequentially along the airflow direction as coarse, medium, and fine filters. Sealing gaskets 222 are installed on both sides of the filter plates, allowing the three filter plates to form independent filtration channels within the filter box 211. The sealing gaskets 222 ensure airtightness between each filter plate and the frame, preventing unfiltered exhaust gas from bypassing and ensuring effective staged filtration.

[0034] In this embodiment, two partition plates 223 are slidably installed in the internal through groove of the first frame 221, and a linkage seat 224 is fixedly installed at the bottom of the partition plate 223. The linkage seat 224 slides inside the bottom groove of the first frame 221. The linkage reset component 6 is driven by the graded drive component 7 to drive the two linkage seats 224 to move synchronously towards each other and in opposite directions, thereby blocking the right side of the third filter plate 228 and the second filter plate 227.

[0035] This allows the partition plate 223 to move synchronously towards each other and block the right-side channel of the filter plate when a certain filter plate is backwashed, forming an independent backwash chamber. This prevents the backwash airflow and the removed lint from interfering with other filter plates, ensuring concentrated and stable backwash air pressure and improving the lint removal rate.

[0036] In this embodiment, the linkage reset assembly 6 includes a mounting bracket 61 fixedly installed at the bottom of the filter box 211, and two central gears 62 are rotatably mounted on the mounting bracket 61. A first limit bracket 63 and a second limit bracket 67 are fixedly installed at the bottom of the filter box 211. A first slider 64 is slidably installed on the first limit bracket 63, and a second slider 68 is slidably installed on the second limit bracket 67. A first rack 66 and a second rack 610 are fixedly installed on the inner sides of the first slider 64 and the second slider 68, respectively, and their outer ends are fixedly connected to two linkage seats 214. The first rack 66 and the second rack 610 are both meshed with the central gears 62. The rotation of the central gears 62 drives the first rack 66 and the second rack 610 to move towards each other. A first spring 65 and a second spring 69 are respectively installed on the crossbars of the first limit bracket 63 and the second limit bracket 67, and the first rack 66 and the second rack 610 are reset by their own elasticity.

[0037] When the central gear 62 rotates, it drives the first rack 66 and the second rack 610 to move towards each other, thereby driving the partition plate 223 to close and seal synchronously. After the backflush is completed, the partition plate 223 is automatically reset by the elastic force of the first spring 65 and the second spring 69, thus realizing the precise opening and closing control of the partition plate 223.

[0038] In this embodiment, the graded drive assembly 7 includes left and right slides 71 fixedly mounted on the mounting bracket 61, and upper and lower slides 72 are slidably mounted inside the left and right slides 71. Upper and lower sliders 73 are slidably mounted inside the upper and lower slides 72, and a graded rack 74 is fixedly mounted on the rear side of the upper and lower sliders 73. The graded rack 74 meshes with the central gear 62.

[0039] This allows the grading rack 74 to achieve a combined horizontal and vertical movement through the cooperation of the upper and lower slides 72 and the left and right slides 71, thereby selectively engaging the central gears 62 at different positions, driving the corresponding filter plate separators 223 to move, and realizing the independent backwash control of the three-stage filter plates.

[0040] In this embodiment, the graded drive assembly 7 further includes a fixed plate 75 fixedly mounted on the mounting bracket 61. A main sprocket 76 and a secondary sprocket 77 are rotatably mounted on the rear side of the fixed plate 75. A chain 78 is installed between the main sprocket 76 and the secondary sprocket 77. A connecting post 710 is fixedly mounted on the rear side of the chain 78. The rear end of the connecting post 710 is rotatably connected to the upper and lower sliders 73, so that the upper and lower sliders 73 move along the path of the chain 78. A second motor 79 is fixedly mounted on the front side of the fixed plate 75. The output end of the second motor 79 passes through the fixed plate 75 and is fixedly connected to the main sprocket 76.

[0041] The second motor 79 is a stepper motor 42BYGH4818. The second motor 79 drives the sprocket and chain mechanism 78, causing the connecting column 710 to move along the rectangular path of the chain 78. This allows the grading rack 74 to sequentially engage or disengage with different central gears 62, achieving sequential grading, blocking, and resetting of the three-stage filter plates. This eliminates the need for multiple drive sources, resulting in simple control and precise sequencing.

[0042] This invention also discloses an intelligent treatment process for waste gas from dyeing blended composite fabrics, comprising the following steps: S1: The waste gas generated from dyeing the blended composite fabric is passed into the spray cooling tower 11 for spray cooling treatment. The cooled waste gas is sent into the filter box 211 of the multi-stage filter box mechanism 2. The three-stage filter plates built into the filter box 211 filter and intercept the lint and impurities in the waste gas. S2: When the filter plates need to be backwashed, the three-stage filter plates are graded and separated by the grading and blocking unit 22 to form an independent backwashing chamber for each filter plate. S3: High-pressure airflow is supplied to the air box 216 through the air flushing component 3. The high-pressure airflow is sprayed onto the surface of the filter plate behind the corresponding partition through the pulse nozzle 218 on the air box 216, and the lint attached to the filter plate is removed by backflushing. At the same time, the reciprocating drive component 5 drives the reciprocating rack 215 to slide back and forth along the limiting shell 214, which drives the air box 216 to move up and down back and forth, so as to realize the full-width backflushing cleaning of the filter plate. S4: The exhaust gas filtered by the multi-stage filter box mechanism 2 is sequentially passed into the electrostatic oil and dust collector 12, the photocatalytic oxidation reactor 13, and the activated carbon adsorber 14 to complete deep purification, and finally discharged through the main fan module 15 to meet the standards.

[0043] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0044] During operation, the exhaust gas first enters the interior of the spray cooling tower 11 for spray cooling treatment. After spray cooling treatment, the exhaust gas enters the interior of the multi-stage filter box mechanism 2 and is filtered by the third filter plate 228, the second filter plate 227 and the first filter plate 226 to remove the lint in the exhaust gas. After filtration, the exhaust gas enters the interior of the electrostatic oil and dust collector 12 to remove the oil fumes, oil mist and fine particulate dust in the exhaust gas. Then it enters the interior of the photocatalytic oxidation reactor 13 to decompose the organic pollutants in the exhaust gas, deodorize and sterilize. Then it enters the interior of the activated carbon adsorber 14 to physically adsorb the remaining low concentration of organic pollutants and odor molecules. After the end, it is discharged through the main fan module 15. Secondly, during backwashing of the third filter plate 228, the second filter plate 227, and the first filter plate 226, the second and third intake solenoid valves are closed, the first intake solenoid valve is opened, the second and third exhaust solenoid valves on the intake branch pipe 43 are closed, the second motor 79 runs and drives the main sprocket 76 to rotate, the main sprocket 76 drives the chain 78 to rotate through the secondary sprocket 77, the chain 78 drives the upper and lower sliders 73 and the upper and lower slide frames 72 to slide linearly inside the left and right slide frames 71 through the connecting column 710, so that the grading rack 74 meshes with the right center gear 62 and rotates. When the center gear 62 rotates, it drives the first rack 66 and the second rack 610 to move towards each other, and drives the two partition plates 223 on the right first frame 221 to move towards each other synchronously, thus sealing the right side of the second filter plate 227. Next, the hot air blower 31 generates hot air, which is pressurized by the compressor 32 and enters the right branch pipe 34 through the main air pipe 33 and the first intake solenoid valve. It then enters the right air box 216 and is sprayed out through the pulse nozzle 218. At the same time, the first motor 56 drives the worm gear 53 to rotate. The worm gear 53 drives the reciprocating gear 54 to rotate through the rotating shaft 52, which drives the reciprocating rack 215 to move up and down. The reciprocating rack 215 drives the air box 216 and the pulse nozzle 218 to move synchronously, performing up and down backwashing on the first filter plate 226. Meanwhile, the bag filter module 41 operates by sucking the washed lint into the bag filter module 41 through the right intake branch pipe 43 and the first exhaust solenoid valve. Then, the grading drive assembly 7 operates again, causing the grading rack 74 to separate from the right-side central gear 62. The right-side first spring 65 and second spring 69, through their own elastic force, push the right-side first slider 64, first rack 66, second slider 68, and second rack 610, causing the linkage seat 224 and the partition plate 223 on the right-side first frame 221 to move in opposite directions and reset. The grading rack 74 then moves to the left, meshing with the left-side central gear 62 and rotating. The central gear 62 moves in the same direction, causing the partition plate 223 and the linkage seat 224 on the left-side first frame 221 to move towards each other, sealing the right side of the third filter plate 228. The first and third intake solenoid valves close, the second intake solenoid valve opens, the first and third exhaust solenoid valves close, and the second exhaust solenoid valve... When the solenoid valve is opened, the main air duct 33, branch air duct 34, reciprocating rack 215, air box 216, pulse nozzle 218 and reciprocating drive assembly 5 in the middle of the filter box 211 operate in the same way to backwash the second filter plate 227. The dust is then sucked up by the recycling unit 4 in sync with the above operations. After the operation is completed, the grading rack 74 moves to the left again and separates from the left center gear 62. When the upper and lower slide frame 72 moves to the leftmost end by the chain 78, the upper and lower sliders 73 move downward inside the upper and lower slide frame 72 by the arc of the left end of the chain 78, so that they follow the lower line of the chain 78 to move to the right. Their travel path does not mesh with the center gear 62. The upper and lower sliders 73 move upward inside the upper and lower slide frame 72 by the arc of the right side of the chain 78 to reset and wait for the next operation. Finally, the first and second intake solenoid valves are closed, the third intake solenoid valve is opened, the first and second exhaust solenoid valves are closed, and the third exhaust solenoid valve is opened to backwash the third filter plate 228.

[0045] 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.

[0046] 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 variations 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 smart waste gas treatment device for dyeing blended composite fabrics, comprising a spray cooling tower, an electrostatic oil and dust collector, a photocatalytic oxidation reactor, an activated carbon adsorber, and a main fan module connected in sequence, characterized in that: A multi-stage filtration box mechanism for backflushing and cleaning of filter plate lint is provided between the spray cooling tower and the electrostatic oil and dust removal device. This mechanism includes: The reciprocating backwash unit contains a filter box with three-stage filter plates. The top of the filter box is equipped with a limiting shell, and a reciprocating rack slides within the limiting shell. The bottom of the reciprocating rack is fixedly and sealed to an air box that extends into the filter box. The air box is equipped with several pulse air nozzles. Air is supplied to the air box through the air flushing component and backwashes the filter plates under high pressure through the air nozzles. The reciprocating drive component drives the rack to move the air box up and down reciprocally, thereby realizing the reciprocating backwashing of the filter plates. The grading and baffle unit is located below the reciprocating backwash unit and is used to grade and baffle the three-stage filter plates to achieve independent backwash cleaning of each filter plate.

2. The intelligent waste gas treatment equipment for dyeing blended composite fabrics according to claim 1, characterized in that: The air-flushing assembly includes a hot air blower and a compressor fixedly installed on the front side of the filter box, and the hot air blower and the compressor are connected and installed together. The output end of the compressor is fixedly installed with a main air duct, and three branch air ducts are fixedly installed on the main air duct. One end of the branch air duct is inserted into the limiting shell and passes through the reciprocating rack, the top box and the air box for fixed connection. Two brackets are fixedly installed on the top of the filter box for supporting the main air duct.

3. The intelligent waste gas treatment equipment for dyeing blended composite fabrics according to claim 1, characterized in that: The graded isolation unit also includes a recycling unit, which includes a bag filter module, a main suction pipe and three suction branch pipes. The main suction pipe is connected to the input end of the bag filter module, and the suction branch pipes are fixedly installed on the main suction pipe, with one end inserted into the interior of the filter box.

4. The intelligent waste gas treatment equipment for dyeing blended composite fabrics according to claim 1, characterized in that: The reciprocating drive assembly includes a mounting housing fixedly mounted on the top box. A rotating shaft is rotatably mounted inside the mounting housing, and a worm gear and a reciprocating gear are fixedly mounted on the rotating shaft. The reciprocating gear meshes with a reciprocating rack. A worm is rotatably mounted inside the mounting housing, and the worm meshes with a worm gear. A first motor is fixedly mounted on one side of the mounting housing, and its output end penetrates into the interior of the mounting housing and is fixedly connected to the worm.

5. The intelligent waste gas treatment equipment for dyeing blended composite fabrics according to claim 1, characterized in that: The graded partition unit includes two first frames and a second frame fixedly installed inside the filter box. A third filter plate and a second filter plate are respectively inserted and installed in the left groove of the two first frames. A first filter plate is inserted and installed inside the second frame. Sealing gaskets are provided on both sides of the third filter plate, the second filter plate and the first filter plate to achieve sealing.

6. The intelligent waste gas treatment equipment for dyeing blended composite fabrics according to claim 5, characterized in that: Two partition plates are slidably installed in the internal through groove of the first frame, and a linkage seat is fixedly installed at the bottom of the partition plate. The linkage seat slides inside the bottom groove of the first frame. The linkage reset component is driven by the graded drive component to drive the two linkage seats to move synchronously towards each other and in opposite directions, thereby blocking the right side of the third filter plate and the second filter plate.

7. The intelligent waste gas treatment equipment for dyeing blended composite fabrics according to claim 6, characterized in that: The linkage reset assembly includes a mounting bracket fixedly installed at the bottom of the filter box, and two central gears are rotatably mounted on the mounting bracket. A first limit bracket and a second limit bracket are fixedly installed at the bottom of the filter box. A first slider is slidably mounted on the first limit bracket, and a second slider is slidably mounted on the second limit bracket. A first rack and a second rack are fixedly mounted on the inner sides of the first and second sliders, respectively, and their outer ends are fixedly connected to the two linkage seats. The first rack and the second rack are both meshed with the central gears. The rotation of the central gears drives the first rack and the second rack to move towards each other. A first spring and a second spring are respectively installed on the crossbars of the first and second limit brackets, and the first rack and the second rack are reset by their own elasticity.

8. The intelligent waste gas treatment equipment for dyeing blended composite fabrics according to claim 7, characterized in that: The graded drive assembly includes left and right slides fixedly mounted on the mounting bracket, and upper and lower slides are slidably mounted inside the left and right slides. Upper and lower sliders are slidably mounted inside the upper and lower slides, and a graded rack is fixedly mounted on the rear side of the upper and lower sliders. The graded rack meshes with the central gear.

9. The intelligent waste gas treatment equipment for dyeing blended composite fabrics according to claim 8, characterized in that: The graded drive assembly also includes a fixed plate fixedly mounted on the mounting frame, and a main sprocket and a secondary sprocket are rotatably mounted on the rear side of the fixed plate. A chain is installed between the main sprocket and the secondary sprocket, and a connecting post is fixedly mounted on the rear side of the chain. The rear end of the connecting post is rotatably connected to the upper and lower sliders, so that the upper and lower sliders move along the path of the chain. A second motor is fixedly mounted on the front side of the fixed plate, and the output end of the second motor passes through the fixed plate and is fixedly connected to the main sprocket.

10. A smart waste gas treatment process for dyeing blended composite fabrics, employing the smart waste gas treatment equipment for dyeing blended composite fabrics as described in any one of claims 1-9, characterized in that: Includes the following steps: S1: The waste gas generated from dyeing blended composite fabrics is passed into a spray cooling tower for spray cooling treatment. The cooled waste gas is then sent into the filter box of the multi-stage filter box mechanism, where the three-stage filter plates built into the filter box filter and intercept the lint and impurities in the waste gas. S2: When the filter plates need to be backwashed, the three-stage filter plates are graded and separated by the grading and blocking unit to form an independent backwashing chamber for each filter plate. S3: High-pressure airflow is supplied to the air box through the air flushing component. The high-pressure airflow is sprayed onto the surface of the filter plate behind the corresponding partition through the pulse nozzle on the air box, and the lint attached to the filter plate is removed by backflushing. At the same time, the reciprocating drive component drives the reciprocating rack to slide along the limiting shell in a limited reciprocating motion, which drives the air box to move up and down reciprocally, so as to achieve full-width reciprocating backflushing cleaning of the filter plate. S4: The exhaust gas, after being filtered by the multi-stage filtration system, is sequentially passed through the electrostatic oil and dust collector, the photocatalytic oxidation reactor, and the activated carbon adsorber for deep purification, and finally discharged through the main fan module to meet the standards.

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