A textile dyeing and printing wastewater treatment device and method

Abstract

This invention relates to the field of waste filament recycling technology, specifically to a textile dyeing and printing wastewater treatment device and method. The device includes a treatment tank, with a partition fixedly installed inside to divide the tank into a filtration tank and a sedimentation tank. A waste filament filtration assembly is rotatably installed inside the filtration tank, and a material guiding assembly is rotatably installed on the bottom surface of the filtration tank. A mixing tank is located on the outer side of the treatment tank near the filtration tank. This invention, through the synergistic effect of the waste filament filtration assembly and the material guiding assembly, can efficiently separate and automatically recover solid waste filaments from wastewater. The rotating filter plate automatically switches its working state during continuous filtration. After one filter plate completes its filtration operation, it can be driven by a servo motor to rotate to a vertical position. At this time, the winding needles in the waste filament recovery assembly move back and forth along the surface of the filter plate to recover the waste filaments remaining on the filter plate surface. This not only solves the problem of easy clogging of traditional fixed filter screens but also enables automatic recovery of waste filaments.

Description

Technical Field

[0001] This invention relates to the field of waste silk recycling technology, and in particular to a textile dyeing and printing wastewater treatment device and method. Background Technology

[0002] The textile printing and dyeing industry, as an important traditional industry in my country, generates a large amount of industrial wastewater containing cellulose and waste silk every year. The cellulose contained in this wastewater is an important raw material for manufacturing rayon and has extremely high recycling value. However, current treatment of textile printing and dyeing wastewater mainly focuses on pollutant removal, while the utilization of recyclable resources is seriously insufficient.

[0003] In traditional treatment processes, cellulose is often landfilled or incinerated along with sludge, resulting in resource waste and potential secondary pollution. Existing technologies face numerous challenges in treating this type of wastewater: First, cellulose exists in diverse and complex forms, including dissolved modified cellulose and suspended solid waste fibers; second, existing recovery devices are often single-function, either processing solid waste fibers or recovering only dissolved cellulose, lacking a systematic overall solution. Furthermore, traditional processes involve multiple independent treatment units, requiring large floor space and exhibiting low efficiency, failing to meet the needs of continuous production in modern textile enterprises. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a textile dyeing and printing wastewater treatment device and method.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A textile dyeing and printing wastewater treatment device includes a treatment tank. A partition is fixedly installed inside the treatment tank, dividing it into a filtration tank and a sedimentation tank. A waste filament filtration assembly is rotatably installed inside the filtration tank, and a material guiding assembly is rotatably installed on the bottom surface of the filtration tank. A mixing tank is located near the outer side of the filtration tank, and a stirring assembly is installed inside the mixing tank. A first water supply pipe is fixedly connected between the stirring assembly and the outer wall of the sedimentation tank. A waste filament recycling assembly is also installed inside the filtration tank, and a raw material recycling assembly is installed inside the sedimentation tank. Specifically, the waste filament filtration assembly includes a rotatable first rotating rod. A fourth servo motor for driving the first rotating rod is fixedly installed on the outer wall of the treatment tank at a position corresponding to the end of the first rotating rod. Four filter plates with multiple filter holes are fixedly installed on the outer wall of the first rotating rod. The waste filament recycling assembly includes a slidable sliding seat, the bottom surface of which is detachable. The system includes a strip plate for unloading, with multiple winding needles fixedly connected to the outer wall of the strip plate near the filter plate; the material guiding assembly includes a rotatable second rotating rod, with a stationary guide plate fixedly installed on the outer wall of the second rotating rod, and a sliding guide plate slidably installed at the end of the stationary guide plate; a fifth servo motor is fixedly installed on the outer wall of the treatment tank at a position corresponding to the end of the second rotating rod, and the output end of the fifth servo motor is fixedly connected to the end of the second rotating rod; the raw material recycling assembly includes two fixed guide rails fixedly installed inside the sedimentation tank, with multiple sliding blocks slidably installed on each of the two fixed guide rails, and a metal filter screen movably connected between the two fixed guide rails; both sides of the metal filter screen are fixedly connected to the multiple sliding blocks on the two fixed guide rails respectively; the outer wall of the treatment tank is provided with a driving structure for driving the metal filter screen to rotate; a drying chamber is fixedly installed on the outer wall of the treatment tank outside the metal filter screen, and multiple scrapers are fixedly installed on the bottom surface of the drying chamber.

[0007] Preferably, a hot air blower is fixedly installed on the outer wall of the drying chamber, and the hot air blower is connected to the interior of the drying chamber. Two opposing slide rails are fixedly installed on the bottom surface of the drying chamber, and a recycling box is slidably installed between the two slide rails. Multiple discharge ports are opened through the bottom surface of the drying chamber above the recycling box.

[0008] Preferably, a drain outlet is provided through the upper half of the outer wall of the mixing tank near the treatment tank. The mixing tank and the treatment tank are internally connected. The stirring assembly includes a rotating shaft rotatably installed inside the mixing tank. A second servo motor is fixedly installed on the top of the mixing tank corresponding to the rotating shaft. The output end of the second servo motor is fixedly connected to the rotating shaft. A first stirring rod is fixedly installed at the end of the rotating shaft. A drive gear is fixedly installed on the outer wall of the rotating shaft. Driven gears that mesh with the drive gear are rotatably installed on both sides of the upper surface of the mixing tank. A second stirring rod is fixedly connected to the center of the driven gear. The second stirring rod is located inside the mixing tank and works in conjunction with the first stirring rod. A premixing box is also provided on the upper surface of the mixing tank. A feed pipe is fixedly connected to the bottom surface of the premixing box. A valve is movably installed inside the feed pipe. The lower end of the feed pipe is fixedly connected to the upper surface of the mixing tank. A third stirring rod is rotatably installed inside the premixing box. A third servo motor is fixedly installed on the outer wall of the end of the premixing box. The output end of the third servo motor is fixedly connected to the outer wall of the end of the third stirring rod. A support rod is fixedly installed on the bottom surface of the other end of the premixing box.

[0009] Preferably, multiple scraper rods are fixedly installed on the lower outer wall of the first stirring rod, and each scraper rod has a scraper strip fixedly connected to its end. The scraper strip is curved and flexible.

[0010] Preferably, a buffer block is fixedly installed inside the sedimentation tank, and the buffer block has a stepped structure.

[0011] Preferably, a second fixing frame is fixedly installed on the upper surface of the treatment pool, a water storage tank is rotatably installed on the upper end of the second fixing frame, and a sixth servo motor is fixedly installed on the outer wall of the second fixing frame, driving the water storage tank to rotate through the sixth servo motor.

[0012] Preferably, a second water supply pipe is fixedly connected to the outer wall of the sedimentation tank. One end of the second water supply pipe is fixedly connected to the upper half of the outer wall of the sedimentation tank, and the other end is fixedly connected to the outer wall of the water storage tank away from the sixth servo motor. The water storage tank rotates around the connection point between the second water supply pipe and the water storage tank.

[0013] Preferably, a threaded rod is rotatably connected between the lower ends of the second fixed frame, the sliding seat is threadedly connected to the threaded rod, a limit rod is fixedly connected between the lower ends of the second fixed frame, and the upper end of the sliding seat is slidably connected to the limit rod. A seventh servo motor is fixedly installed at the corresponding position of the outer wall of the second fixed frame and the end of the threaded rod, and the output end of the seventh servo motor is fixedly connected to the outer wall of the end of the threaded rod.

[0014] Preferably, the driving structure includes a first fixed frame fixedly installed on the outer wall of the sedimentation tank, a transmission roller rotatably connected between the first fixed frames, the transmission roller driving the metal filter screen to move, a first servo motor fixedly installed on the outer wall of the first fixed frame, the output end of the first servo motor fixedly connected to the center position of the transmission roller, and multiple support legs fixedly installed on the bottom surface of the treatment tank, and the multiple support legs are fixedly connected on both sides of the treatment tank.

[0015] A method for treating textile dyeing and printing wastewater includes the following steps:

[0016] Step 1: The wastewater generated from textile printing and dyeing is fed into the filtration tank. After being filtered by the filter plate above the material guiding assembly, the wastewater is introduced into the interior of the mixing tank under the action of the stationary guide plate and the sliding guide plate. The waste filaments in the wastewater are filtered and left on the surface of the filter plate. Then, the fifth servo motor drives the stationary guide plate and the sliding guide plate to rotate. The end of the sliding guide plate scrapes away the debris on the bottom surface of the filter plate. After the stationary guide plate is adjusted to a vertical position, the fourth servo motor drives the first rotating rod to rotate 90 degrees clockwise, so that the filter plate with the waste filaments left on the surface rotates to a vertical position. At this time, the sliding seat drives the strip plate to slide back and forth along the outer wall of the filter plate. The multiple winding pins fixedly installed on the outer wall of the strip plate collect the waste filaments left on the outer wall of the filter plate.

[0017] Step 2: After filtration, the wastewater is introduced into the mixing tank through the feeding component. Then, the acidic agent is mixed with the solvent in the premixing box. After that, the valve is opened to introduce the solvent containing the acidic agent into the mixing tank. The wastewater and the acidic agent are fully mixed by the cooperation of the first and second stirring rods inside the mixing tank.

[0018] Step 3: Under the action of the first water supply pipe, the wastewater mixed with acidic agents is input into the treatment tank. The wastewater flows into the treatment tank from the first water supply pipe and is buffered by the buffer block before concentrating at the bottom of the sedimentation tank. The wastewater mixed with acidic agents settles inside the sedimentation tank. The cellulose flocculent precipitate in the wastewater adheres to the outer wall of the metal filter screen. When the drive roller rotates, it can drive the metal filter screen to slide along the track of the fixed guide rail. When the metal filter screen with cellulose flocculent precipitate moves into the drying chamber, the cellulose flocculent precipitate attached to the metal filter screen can be dried by the hot air blower. Then the metal filter screen continues to move along the outer wall of the fixed guide rail. After passing over multiple scrapers, the dried cellulose flocculent precipitate attached to the metal filter screen can be peeled off by the upper end of the multiple scrapers. The scraped cellulose flocculent precipitate falls into the recycling box through the discharge port for recycling.

[0019] Step 4: After the wastewater settles inside the sedimentation tank, some of the supernatant liquid inside the sedimentation tank is pumped into the water storage tank through the second water supply pipe. After the supernatant liquid accumulates in the water storage tank, it washes one of the filter plates. The supernatant liquid washes out the impurities on the filter plate and carries the impurities through the gap between the lower end of the material guide component and the bottom inner wall of the treatment tank into the mixing tank.

[0020] Step 5: The second water supply pipe is connected to the outer wall of the treatment tank, and an outlet pipe is also installed. The outlet pipe can discharge the wastewater after cellulose recovery.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] This invention achieves efficient separation and automatic recycling of solid waste filaments in wastewater through the synergistic effect of a waste filament filtration component and a material guiding component. The rotary filter plate automatically switches its working state during continuous filtration. After a filter plate completes its filtration operation, it can be driven by a servo motor to rotate to a vertical position. At this time, the winding needles in the waste filament recycling component move back and forth along the surface of the filter plate to recycle the waste filaments left on the surface of the filter plate. This not only solves the problem of easy clogging of traditional fixed filter screens, but also realizes the automatic recycling of waste filaments.

[0023] This invention incorporates a raw material recycling component. A metal filter screen, driven by a servo motor, circulates along a fixed guide rail, continuously adsorbing cellulose flocs from wastewater. When the filter screen carrying the cellulose flocs enters the drying chamber, hot air generated by a hot air blower quickly dries and solidifies the cellulose layer. Subsequently, a specially designed serrated scraper easily peels the dried cellulose flakes off the filter screen. Through physical separation, high-purity cellulose with low moisture content is obtained, achieving the recycling and reuse of cellulose raw materials from wastewater. The entire device is automated from wastewater feeding to waste fiber and cellulose recovery through a control system that coordinates the various components.

[0024] This invention incorporates a water storage tank. The clear liquid from the upper layer of the sedimentation tank is transported to the water storage tank via a second water supply pipeline. The pre-treated wastewater is used to rinse the filter components, making the filter components cleaner and ensuring the filter plates' filtration effect on waste fibers during the next use. This also prevents the filter plates from becoming clogged after prolonged use, which would affect filtration efficiency. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present invention;

[0027] Figure 2 This is a front view of the overall structure in an embodiment of the present invention;

[0028] Figure 3 This is a schematic cross-sectional view of the overall structure in an embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the waste filament filtration assembly in an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the raw material recycling component structure in an embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of the internal structure of the mixing tank in an embodiment of the present invention;

[0032] Figure 7 As described in the embodiments of the present invention Figure 3 A magnified view of the structure at point A in the middle;

[0033] Figure 8 As described in the embodiments of the present invention Figure 3 A magnified schematic diagram of the structure at point B in the middle;

[0034] Figure 9 As described in the embodiments of the present invention Figure 3 A magnified schematic diagram of the structure at point C in the middle;

[0035] Figure 10 As described in the embodiments of the present invention Figure 5 A magnified schematic diagram of the structure at point D in the middle;

[0036] Figure 11 This is a schematic diagram of the water outlet pipe structure installation in an embodiment of the present invention.

[0037] In the diagram: 1. Processing tank; 2. Baffle plate; 3. Mixing tank; 4. First water supply pipe; 5. Second water supply pipe; 6. Water storage tank; 7. Raw material recycling assembly; 701. Fixed guide rail; 702. Sliding block; 703. Metal filter screen; 704. Drying chamber; 705. Hot air blower; 706. Scraper; 707. Recycling box; 708. Discharge port; 709. Slide rail; 710. Drive roller; 711. First servo motor; 712. First fixed frame; 8. Buffer block; 9. Support leg; 10. Water outlet pipe; 11. Stirring assembly; 1101. Rotating shaft; 1102. Second servo motor; 1103. Drive gear; 1104. First stirring rod; 1105. Second stirring rod; 1106. Driven gear ; 1107, Feed pipe; 1108, Valve; 1109, Premix box; 1110, Third servo motor; 1111, Support rod; 1112, Third stirring rod; 1113, Scraper; 1114, Scraper strip; 12, Waste filament filter assembly; 1201, First rotating rod; 1202, Fourth servo motor; 1203, Filter plate; 1204, Filter hole; 13, Material guiding assembly; 1301, Stationary guide plate; 1302, Sliding guide plate; 1303, Second rotating rod; 1304, Fifth servo motor; 14, Drain outlet; 15, Waste filament recycling assembly; 1501, Sliding seat; 1502, Threaded rod; 1503, Limiting rod; 1504, Strip plate; 1505, Winding needle. Detailed Implementation

[0038] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0039] Reference Figure 1-11 A textile dyeing and printing wastewater treatment device includes a treatment tank 1. A partition 2 is fixedly installed inside the treatment tank 1 to divide the interior of the treatment tank 1 into a filtration tank and a sedimentation tank. A waste filament filtration assembly 12 is rotatably installed inside the filtration tank. A material guiding assembly 13, which works in conjunction with the waste filament filtration assembly 12, is rotatably installed on the bottom surface of the filtration tank on the side away from the sedimentation tank. A mixing tank 3 is arranged on the outer side of the treatment tank 1 near the filtration tank. A stirring assembly 11 is arranged inside the mixing tank 3. A first water supply pipe 4 is fixedly connected between the stirring assembly 11 and the outer wall of the sedimentation tank. A waste filament recycling assembly 15 is also arranged inside the filtration tank on the side of the waste filament filtration assembly 12. A raw material recycling assembly 7 is arranged inside the sedimentation tank.

[0040] The waste filament filtration assembly 12 specifically includes a first rotating rod 1201, the two ends of which are rotatably connected to the inner wall of the treatment tank 1. A fourth servo motor 1202 is fixedly installed on the outer wall of the treatment tank 1 at a position corresponding to the end of the first rotating rod 1201. The output end of the fourth servo motor 1202 is fixedly connected to the end of the first rotating rod 1201. Four filter plates 1203 are fixedly installed on the outer wall of the first rotating rod 1201, and multiple filter holes 1204 are opened on the filter plates 1203. Waste filament recycling assembly The component 15 is located on the outside of one of the vertically arranged filter plates 1203. The waste filament recycling component 15 includes a slidable sliding seat 1501. A strip plate 1504 is detachably connected to the bottom surface of the sliding seat 1501. Multiple winding needles 1505 are fixedly connected to the outer wall of the strip plate 1504 near the filter plate 1203. By driving the strip plate 1504 to slide along the outer wall of the filter plate 1203 through the sliding seat 1501, the waste filaments filtered out by the outer wall of the filter plate 1203 can be collected and wound around the outer wall of the multiple winding needles 1505.

[0041] The material guiding assembly 13 includes a second rotating rod 1303 rotatably connected to the inner walls of both sides of the processing pool 1. A stationary guide plate 1301 is fixedly installed on the outer wall of the second rotating rod 1303. A sliding guide plate 1302 is slidably installed at the end of the stationary guide plate 1301. A fifth servo motor 1304 is fixedly installed on the outer wall of the processing pool 1 at a position corresponding to the end of the second rotating rod 1303, and the output end of the fifth servo motor 1304 is fixedly connected to the end of the second rotating rod 1303. Multiple springs are provided inside the second rotating rod 1303, and the two ends of the springs are fixedly connected to the inner wall of the second rotating rod 1303 and the end of the sliding guide plate 1302, respectively.

[0042] The raw material recycling component 7 includes two fixed guide rails 701 fixedly installed inside the sedimentation tank. Multiple sliding blocks 702 are slidably installed on each of the two fixed guide rails 701. A metal filter screen 703 is movably connected between the two fixed guide rails 701. The metal filter screen 703 has a closed structure. Both sides of the metal filter screen 703 are fixedly connected to the multiple sliding blocks 702 on the two fixed guide rails 701 respectively. The outer wall of the treatment tank 1 is provided with a drive structure to drive the metal filter screen 703 to rotate. A drying chamber 704 is fixedly installed on the outer wall of the treatment tank 1 outside the metal filter screen 703. Multiple scrapers 706 are fixedly installed on the bottom surface of the drying chamber 704. The upper end of the scraper 706 is serrated. The upper end of the scraper 706 is used to process the outer wall of the metal filter screen 703.

[0043] A large amount of wastewater is generated in textile printing and dyeing production lines. The wastewater contains some waste fibers and recyclable cellulose. Cellulose can be recovered through acid precipitation, salt precipitation, or organic solvent precipitation. Taking acid precipitation for the recovery of waste fibers and cellulose from wastewater as an example, the filter tank in the treatment tank 1 of this device is equipped with four filter plates 1203. The four filter plates 1203 can be switched between horizontal and vertical positions by rotation. Wastewater is introduced from above the filter plate 1203 on the side closest to the mixing tank 3. The wastewater is filtered by the filter plate 1203, leaving waste fibers on the surface of the filter plate 1203. At this time, the material guiding component 13 located below the filter plate 1203 is inclined. The filtered wastewater is introduced into the mixing tank 3 by the feeding assembly 13 and mixed with acidic agents (such as sulfuric acid and hydrochloric acid). The acidic agents lower the pH value of the wastewater, causing the carboxylic acid groups to protonate, reducing the solubility of cellulose and forming flocculent precipitates. Then, under the action of the first water supply pipe 4, the mixture of wastewater and cellulose flocculent precipitate is fed into the sedimentation tank of the treatment tank 1 for sedimentation. The first water supply pipe 4 is connected to a water pump, and its end is connected to the lower end of the outer wall of the mixing tank 3. After the wastewater mixed with acidic agents enters the treatment tank 1, the cellulose flocculent precipitate in the wastewater adheres to the surface of the metal filter screen 703 under static conditions, and the metal filter screen 703 can move along the driving structure. Moving along the trajectory of the fixed guide rail 701, the metal filter screen 703 can move the part with attached cellulose flocculent precipitate to the outside of the sedimentation tank for recycling when it moves. When the wastewater stops being introduced into the treatment tank 1, the waste filaments filtered by the filter plate 1203 are driven to rotate by the fifth servo motor 1304. The sliding guide plate 1302 at the end of the stationary guide plate 1301 can slide. The spring located inside the stationary guide plate 1301 ensures that the end of the sliding guide plate 1302 is always in contact with the bottom surface of the filter plate 1203. When the stationary guide plate 1301 rotates, the bottom surface of the filter plate 1203 can be cleaned through the end of the sliding guide plate 1302. When the stationary guide plate 1301 rotates to the vertical position... In the upright position, the four filter plates 1203 can be repositioned to allow for rotation. Under the action of the fourth servo motor 1202, the filter plate 1203 with waste filaments on its outer wall can be rotated clockwise to a vertical position. Then, the sliding seat 1501 drives the strip 1504 to slide along the surface of the filter plate 1203, thus recovering the filtered waste filaments. It is worth mentioning that there is a gap between the ends of the multiple filter plates 1203 and the inner wall of the treatment tank 1 that matches the width of the strip 1504. Therefore, the setting of the strip 1504 does not affect the normal rotation of the filter plates 1203. The upper end of the strip 1504 can be detached from the sliding seat 1501. After the user removes the strip 1504, the recovered waste filaments can be taken off and reused.The electrical components in this device, such as the electric telescopic mast and servo motor, are all controlled by a PLC controller.

[0044] As a technical optimization of the present invention, a hot air blower 705 is fixedly installed on the outer wall of the drying chamber 704. The hot air blower 705 is connected to the interior of the drying chamber 704. Two opposing slide rails 709 are fixedly installed on the bottom surface of the drying chamber 704. A recycling box 707 is slidably installed between the two slide rails 709. Multiple discharge ports 708 are opened through the bottom surface of the drying chamber 704 above the recycling box 707. Hot air is continuously input into the drying chamber 704 through the hot air blower 705, which can accelerate the agglomeration of cellulose flocculent precipitate attached to the outer wall of the metal filter screen 703. This facilitates the scraper 706 to scrape off the cellulose flocculent precipitate agglomerated on the metal filter screen 703. The cellulose flocculent precipitate peeled off from the metal filter screen 703 falls into the recycling box 707 through the discharge ports 708 for recycling. The recycling box 707 is located inside the two slide rails 709 and can be slid outwards and removed.

[0045] As a technical optimization of the present invention, a drain outlet 14 is provided through the upper half of the outer wall of the mixing tank 3 near the treatment tank 1. The mixing tank 3 is internally connected to the treatment tank 1. The stirring assembly 11 includes a rotating shaft 1101 rotatably mounted inside the mixing tank 3. A second servo motor 1102 is fixedly mounted on the top of the mixing tank 3 corresponding to the rotating shaft 1101. The output end of the second servo motor 1102 is fixedly connected to the rotating shaft 1101. A first stirring rod 1104 is fixedly mounted on the end of the rotating shaft 1101. An active gear is fixedly mounted on the outer wall of the rotating shaft 1101. The upper surface of the mixing tank 3 is equipped with driven gears 1106 on both sides of the driving gear 1103, which mesh with the driving gear 1103. A second stirring rod 1105 is fixedly connected to the center of the driven gear 1106. The second stirring rod 1105 is located inside the mixing tank 3 and works in conjunction with the first stirring rod 1104. A premixing box 1109 is also provided on the upper surface of the mixing tank 3. A feed pipe 1107 is fixedly connected to the bottom surface of the premixing box 1109. A valve 1108 is movably installed inside the feed pipe 1107. The lower part of the feed pipe 1107... The premixing box 1109 is fixedly connected to the upper surface of the mixing tank 3. A third stirring rod 1112 is rotatably mounted inside the premixing box 1109. A third servo motor 1110 is fixedly mounted on the outer wall of the end of the premixing box 1109. The output end of the third servo motor 1110 is fixedly connected to the outer wall of the end of the third stirring rod 1112. A support rod 1111 is fixedly mounted on the bottom surface of the other end of the premixing box 1109, providing support for the other end of the premixing box 1109. The acidic reagent and a soluble solvent (such as water) are premixed inside the premixing box 1109. The acidic agent is stirred and mixed evenly by the third stirring rod 1112 inside the premixing box 1109. After mixing, the acidic agent is added into the mixing tank 3 and mixed with the wastewater. Under the meshing action between the driving gear 1103 and the driven gear 1106, the first stirring rod 1104 and the second stirring rod 1105 can be driven to rotate simultaneously by the second servo motor 1102 to mix the acidic agent and the wastewater, thereby accelerating the reaction rate of the acidic agent and the carboxylic acid groups in the wastewater. After mixing with the agent, the wastewater is fed into the sedimentation tank for static sedimentation by the first water supply pipe 4.

[0046] As a technical optimization of the present invention, multiple scraper rods 1113 are fixedly installed on the lower outer wall of the first stirring rod 1104, and scraper strips 1114 are fixedly connected to the ends of the multiple scraper rods 1113. The scraper strips 1114 are arranged in an arc shape and are flexible. When the first stirring rod 1104 rotates, the multiple scraper rods 1113 rotate synchronously. At the same time, the scraper strips 1114 located at the ends of the scraper rods 1113 deform according to the shape of the bottom surface of the mixing tank 3 when rotating. The scraper rods 1113 and scraper strips 1114 can prevent sedimentation from appearing on the bottom surface of the mixing tank 3, so that the mixed liquid inside the mixing tank 3 is always in a suspended state after the reaction.

[0047] As a technical optimization of the present invention, a buffer block 8 is fixedly installed inside the sedimentation tank. The buffer block 8 has a stepped structure. The lower outer wall of the buffer block 8 is inclined and the cross-section is generally stepped. The outlet of the first water supply pipe 4 is located at the highest point of the buffer block 8. When wastewater is input into the sedimentation tank from the first water supply pipe 4, the gravitational potential energy of the wastewater can be reduced by the buffer block 8, thereby reducing the fluctuation of the water flow inside the sedimentation tank and making it easier for the cellulose flocs in the wastewater inside the sedimentation tank to settle.

[0048] As a technical optimization of the present invention, a second fixing frame is fixedly installed on the upper surface of the treatment tank 1, and a water storage tank 6 is rotatably installed on the upper end of the second fixing frame. A sixth servo motor is fixedly installed on the outer wall of the second fixing frame, and the water storage tank 6 is driven to rotate by the sixth servo motor. The interior of the water storage tank 6 can be used to store the supernatant clear liquid after the wastewater has settled. After the filter plate 1203 filters the waste filaments in the wastewater, its bottom outer wall can be scraped and cleaned by the material guiding component 13. Then, when the filter plate 1203 rotates clockwise... When the needle rotates to a vertical position, the waste filaments on the outer wall are recovered by the winding needle 1505. Then, the filter plate 1203 continues to rotate clockwise to a horizontal position. The supernatant of the wastewater accumulated in the water storage tank 6 can be used to rinse the multiple filter holes 1204 on the filter plate 1203. During the rinsing process, the sixth servo motor drives the water storage tank 6 to swing, which can make the supernatant of the wastewater in the water storage tank 6 rinse a larger range. The setting of the water storage tank 6 can make the filter plate 1203 more thoroughly cleaned after use.

[0049] As a technical optimization of the present invention, a second water supply pipe 5 is fixedly connected to the outer wall of the sedimentation tank. One end of the second water supply pipe 5 is fixedly connected to the upper half of the outer wall of the sedimentation tank, and the other end is fixedly connected to the outer wall of the water storage tank 6 away from the sixth servo motor. The water storage tank 6 rotates around the connection point between the second water supply pipe 5 and the water storage tank 6. The second water supply pipe 5 can draw out the upper clear liquid inside the sedimentation tank. The other end of the second water supply pipe 5 is located at the center of the rotation of the water storage tank 6. Therefore, no matter what angle the water storage tank 6 rotates to, the upper clear liquid of wastewater can be input into the interior of the water storage tank 6 through the second water supply pipe 5.

[0050] As a technical optimization of the present invention, a threaded rod 1502 is rotatably connected between the lower ends of the second fixed frame, and a sliding seat 1501 is threadedly connected to the threaded rod 1502. A limiting rod 1503 is fixedly connected between the lower ends of the second fixed frame, and the upper end of the sliding seat 1501 is slidably connected to the limiting rod 1503. A seventh servo motor is fixedly installed at the corresponding position of the outer wall of the second fixed frame and the end of the threaded rod 1502. The output end of the seventh servo motor is fixedly connected to the outer wall of the end of the threaded rod 1502. The threaded rod 1502 is driven to rotate by the seventh servo motor, and the upper end of the sliding seat 1501 is limited by the limiting rod 1503. Under the threaded transmission action between the threaded rod 1502 and the sliding seat 1501, the sliding seat 1501 can slide stably along the threaded rod 1502, thereby allowing the strip plate 1504 to slide along the outer wall of the filter plate 1203.

[0051] As a technical optimization of the present invention, the driving structure includes a first fixed frame 712 fixedly installed on the outer wall of the sedimentation tank, a transmission roller 710 rotatably connected between the first fixed frames 712, the transmission roller 710 driving the metal filter screen 703 to move, a first servo motor 711 fixedly installed on the outer wall of the first fixed frame 712, the output end of the first servo motor 711 fixedly connected to the center position of the transmission roller 710, and multiple support legs 9 fixedly installed on the bottom surface of the treatment tank 1, and the multiple support legs 9 are fixedly connected on both sides of the treatment tank 1; the first servo motor 711 drives the transmission roller 710 to rotate, the outer wall of the transmission roller 710 is multi-serrated, when the transmission roller 710 rotates, the serrations on its outer wall insert into the pores on the metal filter screen 703, thereby driving the metal filter screen 703 to move along the trajectory of the fixed guide rail 701.

[0052] A method for treating textile dyeing and printing wastewater includes the following steps:

[0053] Step 1: Wastewater from textile printing and dyeing is fed into a filtration tank. After being filtered by the filter plate 1203 above the material guiding assembly 13, the wastewater is introduced into the mixing tank 3 under the action of the stationary guide plate 1301 and the sliding guide plate 1302. Waste fibers in the wastewater are filtered and left on the surface of the filter plate 1203. Then, the fifth servo motor 1304 drives the stationary guide plate 1301 and the sliding guide plate 1302 to rotate. The end of the sliding guide plate 1302 presses against the bottom surface of the filter plate 1203. Debris removal: After the stationary guide plate 1301 is adjusted to a vertical position, the first rotating rod 1201 is driven to rotate 90 degrees clockwise by the fourth servo motor 1202, so that the filter plate 1203 with waste filaments on the surface rotates to a vertical position. At this time, the sliding seat 1501 drives the strip 1504 to slide back and forth along the outer wall of the filter plate 1203, and the waste filaments left on the outer wall of the filter plate 1203 are collected by the multiple winding needles 1505 fixedly installed on the outer wall of the strip 1504.

[0054] Step 2: The filtered wastewater is introduced into the mixing tank 3 through the feeding component 13. Then, the acidic agent is mixed with the solvent in the premixing box 1109. Then, the valve 1108 is opened to introduce the solvent containing the acidic agent into the mixing tank 3. The wastewater and the acidic agent are fully mixed by the cooperation of the first stirring rod 1104 and the second stirring rod 1105 inside the mixing tank 3.

[0055] Step 3: Under the action of the first water supply pipe 4, the wastewater mixed with acidic agents is input into the treatment tank 1. The wastewater flows into the treatment tank 1 from the first water supply pipe 4, and after being buffered by the buffer block 8, it is concentrated at the bottom of the sedimentation tank. The wastewater mixed with acidic agents settles inside the sedimentation tank. The cellulose flocculent precipitate in the wastewater adheres to the outer wall of the metal filter screen 703. When the drive roller 710 rotates, it can drive the metal filter screen 703 to slide along the trajectory of the fixed guide rail 701. When the metal filter screen with cellulose flocculent precipitate is attached... When the screen 703 moves into the drying chamber 704, the cellulose flocs attached to the metal screen 703 can be dried by the hot air blower 705. Then the metal screen 703 continues to move along the outer wall of the fixed guide rail 701. After passing above the multiple scrapers 706, the dried cellulose flocs attached to the metal screen 703 can be peeled off from the metal screen 703 by the upper end of the multiple scrapers 706. The scraped cellulose flocs fall into the recycling box 707 through the discharge port 708 for recycling.

[0056] Step 4: After the wastewater settles inside the sedimentation tank, a portion of the supernatant liquid inside the sedimentation tank is pumped into the water storage tank 6 through the second water supply pipe 5. After the supernatant liquid accumulates in the water storage tank 6, it washes one of the filter plates 1203. The supernatant liquid washes out the impurities on the filter plate 1203 and carries the impurities through the gap between the lower end of the material guide assembly 13 and the bottom inner wall of the treatment tank 1 into the interior of the mixing tank 3.

[0057] Step 5: The second water supply pipe 5 is connected to the outer wall of the treatment tank 1 and an outlet pipe 10 is also provided. The outlet pipe 10 can discharge the wastewater after cellulose recovery.

[0058] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

[0059] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A textile dyeing and printing wastewater treatment device, comprising a treatment tank (1), characterized in that... The treatment tank (1) is fixedly installed with a partition (2) to divide the interior of the treatment tank (1) into a filtration tank and a sedimentation tank. The filtration tank is rotatably installed with a waste filament filtration assembly (12) and a material guiding assembly (13) is rotatably installed on the bottom surface of the filtration tank. The treatment tank (1) is provided with a mixing tank (3) near the outer side of the filtration tank. The mixing tank (3) is provided with a stirring assembly (11). The stirring assembly (11) is fixedly connected to the outer wall of the sedimentation tank with a first water supply pipe (4). The filtration tank is also provided with a waste filament recycling assembly (15), and the sedimentation tank is provided with a raw material recycling assembly (7). The waste filament filtration assembly (12) specifically includes a rotatable first rotating rod (1201). A fourth servo motor (1202) for driving the first rotating rod (1201) to rotate is fixedly installed on the outer wall of the treatment tank (1) at a position corresponding to the end of the first rotating rod (1201). Four filter plates (1203) are fixedly installed on the outer wall of the first rotating rod (1201). Multiple filter holes (1204) are opened on the filter plates (1203). The waste filament recycling assembly (15) includes a slidable sliding seat (1501). A strip plate (1504) is detachably connected to the bottom surface of the sliding seat (1501). Multiple winding needles (1505) are fixedly connected to the outer wall of the strip plate (1504) on the side close to the filter plate (1203). The material guiding assembly (13) includes a rotatable second rotating rod (1303), a stationary guide plate (1301) is fixedly installed on the outer wall of the second rotating rod (1303), a sliding guide plate (1302) is slidably installed at the end of the stationary guide plate (1301), a fifth servo motor (1304) is fixedly installed on the outer wall of the treatment tank (1) at the corresponding position of the end of the second rotating rod (1303), and the output end of the fifth servo motor (1304) is fixedly connected to the end of the second rotating rod (1303); The raw material recycling component (7) includes two fixed guide rails (701) fixedly installed inside the sedimentation tank. Multiple sliding blocks (702) are slidably installed on both fixed guide rails (701). A metal filter screen (703) is movably connected between the two fixed guide rails (701). The two sides of the metal filter screen (703) are fixedly connected to multiple sliding blocks (702) on the two fixed guide rails (701). The outer wall of the treatment tank (1) is provided with a driving structure to drive the metal filter screen (703) to rotate. A drying chamber (704) is fixedly installed on the outer wall of the treatment tank (1) outside the metal filter screen (703). Multiple scrapers (706) are fixedly installed on the bottom surface of the drying chamber (704).

2. The textile dyeing and printing wastewater treatment device according to claim 1, characterized in that, A hot air blower (705) is fixedly installed on the outer wall of the drying chamber (704). The hot air blower (705) is connected to the interior of the drying chamber (704). Two opposing slide rails (709) are fixedly installed on the bottom surface of the drying chamber (704). A recycling box (707) is slidably installed between the two slide rails (709). Multiple discharge ports (708) are opened through the bottom surface of the drying chamber (704) above the recycling box (707).

3. The textile dyeing and printing wastewater treatment device according to claim 2, characterized in that, The mixing tank (3) has a drain outlet (14) extending through the upper half of its outer wall near the treatment tank (1). The mixing tank (3) and the treatment tank (1) are internally connected. The stirring assembly (11) includes a rotating shaft (1101) rotatably mounted inside the mixing tank (3). A second servo motor (1102) is fixedly mounted on the top of the mixing tank (3) corresponding to the rotating shaft (1101). The output end of the second servo motor (1102) is fixedly connected to the rotating shaft (1101). A first stirring rod (1104) is fixedly mounted at the end of the rotating shaft (1101). A drive gear (1103) is fixedly mounted on the outer wall of the rotating shaft (1101). A driven gear (1106) is rotatably mounted on both sides of the upper surface of the mixing tank (3) and meshes with the drive gear (1103). The center position of the driven gear (1106) is fixed. A second stirring rod (1105) is fixedly connected to the mixing tank (3). The second stirring rod (1105) is located inside the mixing tank (3) and works in conjunction with the first stirring rod (1104). A premixing box (1109) is also provided on the upper surface of the mixing tank (3). A feed pipe (1107) is fixedly connected to the bottom surface of the premixing box (1109). A valve (1108) is movably installed inside the feed pipe (1107). The lower end of the feed pipe (1107) is fixedly connected to the upper surface of the mixing tank (3). A third stirring rod (1112) is rotatably installed inside the premixing box (1109). A third servo motor (1110) is fixedly installed on the outer wall of the end of the premixing box (1109). The output end of the third servo motor (1110) is fixedly connected to the outer wall of the end of the third stirring rod (1112). A support rod (1111) is fixedly installed on the bottom surface of the other end of the premixing box (1109).

4. The textile dyeing and printing wastewater treatment device according to claim 3, characterized in that, Multiple scraper rods (1113) are fixedly installed on the lower outer wall of the first stirring rod (1104). Each scraper rod (1113) has a scraper strip (1114) fixedly connected to its end. The scraper strip (1114) is curved and flexible.

5. The textile dyeing and printing wastewater treatment device according to claim 4, characterized in that, The sedimentation tank is equipped with a buffer block (8) which has a stepped structure.

6. The textile dyeing and printing wastewater treatment device according to claim 5, characterized in that, The upper surface of the treatment tank (1) is fixedly installed with a second fixed frame, and a water storage tank (6) is rotatably installed at the upper end of the second fixed frame. A sixth servo motor is fixedly installed on the outer wall of the second fixed frame, and the water storage tank (6) is driven to rotate by the sixth servo motor.

7. The textile dyeing and printing wastewater treatment device according to claim 6, characterized in that, The outer wall of the sedimentation tank is fixedly connected to a second water supply pipe (5). One end of the second water supply pipe (5) is fixedly connected to the upper half of the outer wall of the sedimentation tank, and the other end is fixedly connected to the outer wall of the water storage tank (6) away from the sixth servo motor. The water storage tank (6) rotates around the connection between the second water supply pipe (5) and the water storage tank (6).

8. The textile dyeing and printing wastewater treatment device according to claim 7, characterized in that, A threaded rod (1502) is rotatably connected between the lower ends of the second fixed frame. The sliding seat (1501) is threadedly connected to the threaded rod (1502). A limit rod (1503) is fixedly connected between the lower ends of the second fixed frame. The upper end of the sliding seat (1501) is slidably connected to the limit rod (1503). A seventh servo motor is fixedly installed on the outer wall of the second fixed frame at the corresponding position of the end of the threaded rod (1502). The output end of the seventh servo motor is fixedly connected to the outer wall of the end of the threaded rod (1502).

9. A textile dyeing and printing wastewater treatment device according to claim 8, characterized in that, The driving structure includes a first fixed frame (712) fixedly installed on the outer wall of the sedimentation tank, a transmission roller (710) rotatably connected between the first fixed frames (712), the transmission roller (710) drives the metal filter screen (703) to move, a first servo motor (711) is fixedly installed on the outer wall of the first fixed frame (712), the output end of the first servo motor (711) is fixedly connected to the center position of the transmission roller (710), and multiple support legs (9) are fixedly installed on the bottom surface of the treatment tank (1), and the multiple support legs (9) are fixedly connected on both sides of the treatment tank (1).

10. The treatment method of the textile dyeing and printing wastewater treatment device according to claim 9, characterized in that, Specifically, the following steps are included: Step 1: The wastewater generated from textile printing and dyeing is fed into the filter tank. After being filtered by the filter plate (1203) above the material guiding assembly (13), the wastewater is introduced into the interior of the mixing tank (3) under the action of the stationary guide plate (1301) and the sliding guide plate (1302). The waste fibers in the wastewater are filtered and left on the surface of the filter plate (1203). Then, the fifth servo motor (1304) drives the stationary guide plate (1301) and the sliding guide plate (1302) to rotate. The end of the sliding guide plate (1302) presses against the bottom surface of the filter plate (1203). The debris is scraped off. After the stationary guide plate (1301) is adjusted to a vertical position, the first rotating rod (1201) is driven to rotate 90 degrees clockwise by the fourth servo motor (1202), so that the filter plate (1203) with waste filaments left on the surface rotates to a vertical position. At this time, the sliding seat (1501) drives the strip plate (1504) to slide back and forth along the outer wall of the filter plate (1203). The waste filaments left on the outer wall of the filter plate (1203) are collected by the multiple winding needles (1505) fixedly installed on the outer wall of the strip plate (1504). Step 2: The filtered wastewater is introduced into the mixing tank (3) through the feeding component (13). Then, the acidic agent is mixed with the solvent in the premixing box (1109). Then, the valve (1108) is opened to introduce the solvent containing the acidic agent into the mixing tank (3). The wastewater and the acidic agent are fully mixed by the cooperation of the first stirring rod (1104) and the second stirring rod (1105) inside the mixing tank (3). Step 3: Under the action of the first water supply pipe (4), the wastewater mixed with acidic agents is input into the treatment tank (1). The wastewater flows into the treatment tank (1) from the first water supply pipe (4), and after being buffered by the buffer block (8), it is concentrated at the bottom of the sedimentation tank. The wastewater mixed with acidic agents settles inside the sedimentation tank. The cellulose flocculent precipitate in the wastewater adheres to the outer wall of the metal filter screen (703). When the drive roller (710) rotates, it can drive the metal filter screen (703) to slide along the trajectory of the fixed guide rail (701). When the metal filter screen (703) with cellulose flocculent precipitate is attached... 03) When moving to the inside of the drying chamber (704), the cellulose flocs attached to the metal filter screen (703) can be dried by the hot air blower (705). Then the metal filter screen (703) continues to move along the outer wall of the fixed guide rail (701). After passing above the multiple scrapers (706), the dried cellulose flocs attached to the metal filter screen (703) can be peeled off from the metal filter screen (703) by the upper end of the multiple scrapers (706). The scraped cellulose flocs fall into the inside of the recycling box (707) through the discharge port (708) for recycling. Step 4: After the wastewater settles inside the sedimentation tank, a portion of the supernatant inside the sedimentation tank is pumped into the water storage tank (6) through the second water supply pipe (5). After the supernatant accumulates in the water storage tank (6), it washes one of the filter plates (1203). The supernatant washes out the impurities on the filter plate (1203) and carries the impurities through the gap between the lower end of the material guide assembly (13) and the bottom inner wall of the treatment tank (1) into the mixing tank (3). Step 5: The second water supply pipe (5) is connected to the outer wall of the treatment tank (1). The water outlet pipe (10) can discharge the wastewater after cellulose recovery.

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