Full-automatic circulating recovery and regeneration device for environment-friendly paint stripping waste liquid

Abstract

The present application relates to paint stripping waste liquid treatment technical field, disclose an environmental protection type paint stripping waste liquid full-automatic recycling regenerative device, including the sedimentation tank, the drive motor of fixed installation in the outer wall of sedimentation tank, the output shaft of drive motor is equipped with drive shaft, still include setting in the sedimentation tank above the residue salvaging mechanism and setting in the sedimentation tank below the mud scraping subassembly, the residue salvaging mechanism includes a plurality of residue wrapping subassembly for collecting floating dregs, the translation subassembly for driving residue wrapping subassembly operation, and the lifting subassembly for the inclined state of residue wrapping subassembly, through the residue salvaging mechanism that sets, realizes the active, efficient and thorough recovery of liquid surface dispersion floating dregs, the mechanism when working, through translation subassembly drive all rotating plate synchronous inward rotation, with the horizontal bottom board enclose into multiple side-by-side closed type residue discharge cylinder, the floating dregs of whole liquid surface area is physically divided, gathered and closed in the cylinder, effectively solved the problem of floating dregs drift, adhesion.

Description

Technical Field

[0001] This invention relates to the field of paint stripping wastewater treatment technology, and in particular to an environmentally friendly fully automatic recycling and regeneration device for paint stripping wastewater. Background Technology

[0002] The environmentally friendly fully automated recycling and regeneration device for paint stripper wastewater is an integrated system for in-situ treatment of wastewater. Its core processes include pretreatment, separation and purification, deep regeneration, and automatic reuse. The separation and purification stage centers on a sedimentation tank, utilizing gravity settling to efficiently separate suspended solid particles and floating light pollutants from the wastewater. However, traditional paint stripper wastewater treatment relies heavily on manual sludge removal and discharge, resulting in low efficiency, a poor operating environment, and difficulty in achieving complete separation of paint residue, sludge, and supernatant. While existing equipment possesses some automation capabilities, it still has shortcomings in areas such as sludge aggregation, synchronous sludge scraping, interference prevention and isolation, and self-cleaning, easily leading to problems such as sludge residue and secondary sludge suspension, affecting the stable recovery and resource utilization of the water.

[0003] Patent publication number CN121292735A discloses a liquid collection device for preventing precipitation of PCB etching waste liquid, relating to the field of etching waste liquid collection technology. The device includes a collection tank with a multi-layer processing mechanism at its top. This mechanism is used to add a precipitant during the collection of etching waste liquid and to stir the waste liquid during addition. After stirring, the mechanism adsorbs the etching waste liquid. The rotation of the processing plate ensures thorough mixing of the precipitant and the etching waste liquid, facilitating the formation of solid particles. Furthermore, the mechanism buffers the solid particles within the etching waste liquid during collection, reducing wear between the particles and the separation structure. After treatment by the double-layer anti-precipitation mechanism, the rotation and reciprocating motion of the adsorption plate further adsorbs tiny particles within the etching waste liquid, ensuring that no particle precipitation occurs after collection. This benefits the user's subsequent treatment of the etching waste liquid.

[0004] The existing technology has the following drawbacks: Incomplete scum recovery and easy residue: Existing devices mostly use fixed scrapers or simple nets, which cannot actively gather and seal the scum dispersed on the liquid surface. During scum discharge, the scum easily adheres to the equipment or floats away, resulting in a large amount of light paint residue remaining in the pool. This not only reduces the recovery efficiency, but the residue will also contaminate the purified supernatant in subsequent cycles, seriously affecting water quality stability and reuse rate.

[0005] Sludge scraping operations disturb the sedimentation zone, resulting in poor separation: When the sludge scraping mechanism of the existing device is running, it is easy to stir up the sludge that has settled at the bottom of the tank, causing the bottom sludge to be resuspended and mixed with the supernatant. This destroys the stratification formed by static sedimentation, resulting in incomplete solid-liquid separation. The discharged "sludge" has a high water content, which increases the difficulty and cost of subsequent sludge treatment, and at the same time drags down the treatment efficiency and stability of the entire system. Summary of the Invention

[0006] Given that existing technologies suffer from problems such as incomplete scum recovery, easy residue, and poor separation effect due to disturbance of the sedimentation zone during sludge scraping operations, an environmentally friendly fully automatic recycling and regeneration device for paint stripping waste liquid is proposed.

[0007] This application provides an environmentally friendly fully automatic recycling and regeneration device for paint stripping waste liquid. Its purpose is to achieve active aggregation, closed collection and self-cleaning sludge discharge of floating sludge by integrating an automatic sludge removal mechanism composed of multiple openable and closable sludge-coating components. At the same time, it is combined with an isolation mechanism that can quickly move the closed sedimentation zone before sludge scraping to prevent secondary disturbance of the settled sludge during sludge scraping. This collaboratively achieves efficient and thorough separation of floating sludge and bottom sludge, and ensures stable water quality of the supernatant effluent, ultimately achieving fully automatic, continuous and resource-based recycling and regeneration.

[0008] The technical solution of the present invention is: an environmentally friendly fully automatic recycling and regeneration device for paint stripping waste liquid, including a sedimentation tank, a drive motor fixedly installed on the outer wall of the sedimentation tank, a drive shaft sleeved on the output shaft of the drive motor, and a slag removal mechanism set above the sedimentation tank and a sludge scraping assembly set below the sedimentation tank. The slag removal mechanism includes multiple slag-coating assemblies for collecting floating slag, a translation assembly for driving the slag-coating assemblies to operate, and a lifting assembly for the slag-coating assemblies to form an inclined state. The slag-coating assembly includes a second vertical plate rotatably connected to the outer wall of the sedimentation tank, and a first vertical plate placed on the outer wall of the sedimentation tank. A horizontal bottom plate is fixedly connected between the first and second vertical plates. Two rotating shafts are rotatably connected between the first and second vertical plates. The two rotating shafts are symmetrically arranged on both sides of the horizontal bottom plate. A rotating plate is fixedly connected to the outer wall of each of the two rotating shafts. The two rotating plates rotate with the horizontal bottom plate through the rotating shafts to form a slag discharge cylinder.

[0009] Using the above scheme, through the set slag-coating components, during the static sedimentation stage, multiple slag-coating components are placed horizontally with their rotating plates in the open state. When sedimentation is complete, the drive motor of the translation component drives multiple rotating shafts to rotate synchronously through a gear and rack system. All rotating plates rotate inward, forming multiple parallel slag discharge cylinders with the horizontal bottom plates of their respective components. This divides, gathers, and seals the slag in the entire liquid surface area within their respective cylinders. Then, by raising the component to control the tilt of the slag-removing mechanism to discharge the slag, the fully automated operation of slag collection, lifting, and discharge is achieved.

[0010] Furthermore, a first rotating gear and a second rotating gear are respectively fixedly connected to one end of the two rotating shafts passing through the first upright plate. The first rotating gear meshes with the second rotating gear, and a clean water pipe is fixedly connected between the tops of the plurality of first upright plates.

[0011] Furthermore, the translation component includes a connecting plate placed on the outer wall of the sedimentation tank. The connecting plate is fixedly connected to the bottom of a plurality of first upright plates. A translation rack is slidably connected to the top of the connecting plate. A drive motor is fixedly connected to the top of the connecting plate. A first drive gear is sleeved on the output shaft of the drive motor. The translation rack meshes with the first drive gear and a plurality of second rotating gears respectively.

[0012] Furthermore, the lifting assembly includes multiple support frames fixedly connected to the outer wall of the connecting plate, and multiple vertical racks slidably connected to the inner wall of the sedimentation tank. The vertical racks are provided with inclined swing grooves inside, and the ends of the support frames extend into the inclined swing grooves and can slide in the inclined swing grooves.

[0013] Furthermore, the outer wall of the drive shaft is fixedly connected with a plurality of second transmission gears, the vertical rack meshes with the corresponding second transmission gears, and the lifting assembly also includes a plurality of return springs fixedly installed on the inner wall of the sedimentation tank, the top of the return springs abutting against the outer wall of the vertical rack.

[0014] Furthermore, the inner wall of the sedimentation tank is fixedly connected with multiple baffles, and the multiple baffles are respectively located between two adjacent slag-coating components.

[0015] Using the above scheme, through the set slag removal mechanism, the drive motor drives the first drive gear to rotate, which in turn drives the translation rack meshing with it to move linearly. During the movement of the translation rack, it synchronously drives all the second rotating gears meshing with it to rotate. Each second rotating gear drives the rotating shaft and rotating plate coaxial with it to rotate, and through meshing with the first rotating gear, drives the rotating shaft and rotating plate on the other side to rotate in the opposite direction, thereby realizing that the two rotating plates of all slag-covering units close towards each other, forming a slag discharge cylinder with the horizontal bottom plate. The presence of the partition plate ensures that the slag in each compartment is collected independently. Subsequently, the drive motor drives multiple second drive gears to rotate through the drive shaft, driving all vertical racks to rise synchronously. During the rise, the inclined surface of the inclined swing groove of the vertical rack pushes the end of the support frame inserted therein, forcing the support frame and one side of the connecting plate fixedly connected to it to be lifted up. Since the connecting plate is connected to all the slag-coating components through the first vertical plate, and the second vertical plate of the slag-coating components is rotatably connected to the pool wall, the entire slag-removing mechanism is lifted and tilted as a whole around the second vertical plate as the axis. While tilting and discharging slag, the clean water pipe is turned on to rinse each slag discharge cylinder, completing the final removal of floating slag. After the operation is completed, the drive motor reverses, the second transmission gear reverses, the vertical rack descends and resets, and the support frame is guided back down through the inclined swing groove, driving the slag-removing mechanism to return to horizontal. At the same time, the transmission motor reverses, driving the translation rack to move in the opposite direction, causing each rotating plate to open, the slag discharge cylinder to disassemble, and all parts to return to the initial position, ready for the next work cycle.

[0016] Furthermore, the sludge scraping assembly includes two toothed threaded rods rotatably connected to the inner wall of the sedimentation tank, and a sludge scraper is threaded between the two toothed threaded rods. The bottom of the sludge scraper is slidably connected to the inner wall of the sedimentation tank. Two transmission helical gears are also fixedly connected to the outer wall of the drive shaft, and the two transmission helical gears mesh with the helical gears on the corresponding toothed threaded rods.

[0017] Furthermore, the sludge scraping assembly also includes two roller frames fixedly installed on the inner wall of the sedimentation tank, and two rope winding devices fixedly installed on the outer wall of the sedimentation tank. The rollers inside the roller frames are connected to partition moving rods, and both ends of the partition moving rods are fixedly connected to connecting ropes. The ends of the two connecting ropes on the same side away from the partition moving rods are connected to the rope winding devices.

[0018] Using the above scheme, the sludge scraping assembly, during the preparation stage of the sludge scraping operation, activates the rope winding device to wind up the connecting rope. The connecting rope pulls the partition moving rod smoothly out of the winding frame, quickly moves to the set position, and locks it, forming a reliable physical barrier between the sedimentation zone and the sludge discharge chamber, creating boundary conditions for subsequent orderly sludge discharge. Subsequently, the drive motor runs, and its power is transmitted through the drive shaft to two transmission helical gears fixed on it. These two transmission helical gears mesh with the helical gears at the ends of the left and right toothed threaded rods, respectively, transmitting power to the toothed threaded rods and ensuring that they rotate synchronously. The rotating toothed threaded rods drive the sludge scraper blades, which are threaded with them, to move linearly along the bottom of the pool towards the sludge discharge chamber. During the movement, the sludge scraper blades scrape and push the bottom sludge accumulated at the bottom of the pool forward, entering the sludge discharge chamber through the connecting port. After the sludge is discharged, all components reset in reverse coordination, ready to receive the next batch of waste liquid, thereby achieving full automation of sludge and sludge separation and removal.

[0019] Furthermore, the sedimentation tank has a slag discharge chamber and a sludge discharge chamber inside, and the sludge discharge chamber is connected to the interior of the sedimentation tank through a communication port. The inner walls of the slag discharge chamber and the sludge discharge chamber are connected to valved discharge pipes.

[0020] Furthermore, the outer wall of the sedimentation tank is connected to a drain pipe and a water inlet pipe, both of which are connected to the interior of the sedimentation tank.

[0021] Using the above scheme, a sedimentation tank is set up, an inlet pipe is responsible for inputting the purified liquid, and a drain pipe is responsible for outputting the purified liquid. The slag discharge chamber and the sludge discharge chamber receive and temporarily store scum and sludge respectively through a connection port and a mechanism. Finally, the solid waste is discharged by their respective valved discharge pipes, thus realizing a continuous and automated treatment process for paint stripping waste liquid.

[0022] The beneficial effects of this invention are: By integrating an automatic slag removal mechanism composed of multiple openable and closable slag-coating components, the active, efficient, and thorough recovery of dispersed slag on the liquid surface is achieved. During operation, the mechanism drives all rotating plates to rotate inward synchronously through the translation component, forming multiple parallel closed slag discharge cylinders with the horizontal bottom plate. This physically divides, gathers, and seals the slag in the entire liquid surface area within the cylinders, effectively solving the problems of slag dispersion and adhesion. During the slag discharge stage, the lifting component drives the entire slag removal mechanism to tilt around the second vertical plate as the axis, and the clean water pipe performs self-cleaning flushing inside the cylinders, ensuring that the slag is completely discharged into the slag discharge chamber without residue, thereby ensuring the stability and reuse rate of the system's effluent.

[0023] By setting up an independent sludge scraping component and a matching physical isolation mechanism, efficient and low-disturbance removal of bottom sludge in the sedimentation zone is achieved. Before the sludge scraping operation, the rope winding device pulls the partition moving rod to move quickly laterally, forming a reliable physical barrier between the sedimentation zone and the sludge discharge chamber, effectively isolating the area to be scraped from the settled area. Subsequently, the drive motor drives two toothed threaded rods to rotate synchronously through the transmission helical gear, driving the sludge scraper to move smoothly along the bottom of the pool, scraping and pushing the sludge in the isolation zone to the sludge discharge chamber. This significantly reduces the water content of the discharged sludge, making the solid-liquid separation more thorough, greatly reducing the load on subsequent sludge treatment, and ensuring the stability of the separation and purification effect of the entire system.

[0024] By operating the slag removal mechanism, lifting component, sludge scraping component, and isolation mechanism in a sequential and coordinated manner under the control of a unified drive system, the entire process of slag removal and bottom sludge discharge is automated and highly efficient. When the system is working, each mechanism executes automatically in sequence according to a preset program. This integrated and programmed design not only significantly reduces manual intervention but also achieves fully automated, continuous, and resource-based regeneration of paint stripping waste liquid from inlet, separation, purification to solid waste discharge, thereby improving the operational stability, processing efficiency, and economy of the entire device. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the slag removal mechanism of the present invention; Figure 3 This is a schematic diagram of the structure of the slag-coating component of the present invention; Figure 4 This is a schematic diagram of the water pipe structure of the present invention; Figure 5 This is a schematic diagram of the structure at the drive shaft of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram of point A in the middle; Figure 7 This is a schematic diagram of the structure at the vertical rack of the present invention; Figure 8 For the present invention Figure 7 A magnified structural diagram of point B in the middle section; Figure 9 This is a schematic diagram of the tilted state of the coating component of the present invention; Figure 10 This is a schematic diagram of the slag discharge chamber of the present invention; Figure 11 This is a schematic diagram of the structure of the scraper blade of the present invention; Figure 12 This is a schematic diagram of the structure of the movable partition rod of the present invention.

[0026] In the picture: 1. Sedimentation tank; 11. Drainage pipe; 12. Inlet pipe; 13. Slag discharge chamber; 14. Connecting port; 15. Sludge discharge chamber; 16. Valve-equipped discharge pipe; 2. Slag removal mechanism; 21. Translation assembly; 211. Translation rack; 212. Connecting plate; 213. First transmission gear; 214. Transmission motor; 22. Slag coating assembly; 221. First vertical plate; 222. Rotating shaft; 223. First rotating gear; 224. Second rotating gear; 225. Rotating plate; 2 26. Horizontal base plate; 227. Second vertical plate; 23. Lifting assembly; 231. Support frame; 232. Vertical rack; 233. Inclined swing groove; 234. Return spring; 24. Partition plate; 25. Clean water pipe; 3. Sludge scraping assembly; 31. Toothed threaded rod; 32. Sludge scraper; 33. Roller frame; 34. Partition moving rod; 35. Connecting rope; 36. Rope winding device; 4. Drive motor; 41. Drive shaft; 42. Second transmission gear; 43. Transmission helical gear. Detailed Implementation

[0027] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0028] Reference Figure 1 - Figure 12 An environmentally friendly fully automatic recycling and regeneration device for paint stripping waste liquid is provided, including a sedimentation tank 1, a drive motor 4 fixedly installed on the outer wall of the sedimentation tank 1, a drive shaft 41 sleeved on the output shaft of the drive motor 4, a slag removal mechanism 2 set above the sedimentation tank 1, and a sludge scraping assembly 3 set below the sedimentation tank 1. The slag removal mechanism 2 includes multiple slag-coating assemblies 22 for collecting floating slag, a translation assembly 21 for driving the slag-coating assemblies 22, and a lifting assembly 23 for the slag-coating assemblies 22 to form an inclined state.

[0029] Reference Figure 2 - Figure 6 The slag-coating assembly 22 includes a second vertical plate 227 rotatably connected to the outer wall of the sedimentation tank 1, and a first vertical plate 221 placed on the outer wall of the sedimentation tank 1. A horizontal bottom plate 226 is fixedly connected between the first vertical plate 221 and the second vertical plate 227. Two rotating shafts 222 are rotatably connected between the first vertical plate 221 and the second vertical plate 227. The two rotating shafts 222 are symmetrically arranged on both sides of the horizontal bottom plate 226. A rotating plate 225 is fixedly connected to the outer wall of each of the two rotating shafts 222. The two rotating plates 225 rotate with the horizontal bottom plate 226 through the rotating shafts 222 to form a slag discharge cylinder.

[0030] Specifically, the first vertical plate 221 is placed on the outer wall of the sedimentation tank 1 to fix one end of the horizontal bottom plate 226 and to provide a stable front support point for the operation of the entire assembly; the second vertical plate 227 is rotatably connected to the outer wall of the sedimentation tank 1 and is the rotation fulcrum of the entire slag removal mechanism 2 during the lifting and lowering process; the horizontal bottom plate 226 forms the bottom of the slag discharge cylinder, which is horizontally supported when the slag wrapping assembly 22 is in the open state, and serves as a base for containing scum after the slag discharge cylinder is formed, and as a channel for scum to slide out during slag discharge; during slag wrapping, the two rotating plates 225 rotate inward and surround the fixed horizontal bottom plate 226 to form a slag discharge cylinder that is closed on three sides and open at the top, completing the collection and gathering of scum on the liquid surface. After the slag discharge is completed, the rotating plates 225 rotate in the opposite direction to open, causing the slag discharge cylinder to disintegrate.

[0031] During the static sedimentation stage, multiple slag-coating components 22 are placed horizontally with their rotating plates 225 in the open state. When sedimentation is complete, the drive motor 214 of the translation component 21 drives multiple rotating shafts 222 to rotate synchronously through a gear and rack system. All rotating plates 225 rotate inward and form multiple parallel slag discharge cylinders with their respective component bottom plates 226, dividing, gathering, and sealing the slag in the entire liquid surface area within their respective cylinders. Then, the tilting of the slag-removing mechanism 2 is controlled by the lifting component 23 to discharge the slag, realizing a fully automated operation from slag collection, lifting, to discharge.

[0032] Reference Figure 2 - Figure 10Two rotating shafts 222 pass through one end of the first vertical plate 221 and are respectively fixedly connected to a first rotating gear 223 and a second rotating gear 224. The first rotating gear 223 meshes with the second rotating gear 224. A clear water pipe 25 is fixedly connected between the tops of the multiple first vertical plates 221. The translation component 21 includes a connecting plate 212 placed on the outer wall of the sedimentation tank 1. The connecting plate 212 is fixedly connected to the bottom of the multiple first vertical plates 221. A translation rack 211 is slidably connected to the top of the connecting plate 212. A drive motor 214 is fixedly connected to the top of the connecting plate 212. A first drive gear 213 is sleeved on the output shaft of the drive motor 214. The translation rack 211 meshes with the first drive gear 213 and the multiple second rotating gears 224 respectively. The lifting component 23 includes multiple support frames 231 fixedly connected to the outer wall of the connecting plate 212, and multiple vertical racks 232 slidably connected to the inner wall of the sedimentation tank 1. The vertical racks 232 have inclined swing grooves 233 inside, and the ends of the support frames 231 extend into the inclined swing grooves 233 and can slide in the inclined swing grooves 233. Multiple second transmission gears 42 are fixedly connected to the outer wall of the drive shaft 41, and the vertical racks 232 mesh with the corresponding second transmission gears 42. The lifting component 23 also includes multiple return springs 234 fixedly installed on the inner wall of the sedimentation tank 1, and the top of the return springs 234 abuts against the outer wall of the vertical racks 232. Multiple partitions 24 are fixedly connected to the inner wall of the sedimentation tank 1, and the multiple partitions 24 are respectively located between two adjacent slag-coating components 22.

[0033] Specifically, the first rotating gear 223 and the second rotating gear 224 form a reversing transmission pair, converting the unidirectional linear motion transmitted by the translation rack 211 into the opposing rotational motion of the two rotating shafts 222, thereby driving the two rotating plates 225 to synchronously close inward or open outward; the translation rack 211 meshes with the first transmission gear 213 on the transmission motor 214, converting the motor's rotational motion into its own linear reciprocating motion, and simultaneously meshes with multiple second rotating gears 224, directly transmitting its own linear motion to all slag-coating assemblies 22, driving the rotating plates 225 at each location to synchronously open and close. The support frame 231 extends into the inclined groove 233 of the vertical rack 232, and guides the vertical lifting and lowering movement of the vertical rack 232 through the inclined surface of the inclined groove 233, converting it into a lifting force on the connecting plate 212 and the entire slag removal mechanism 2 connected thereto; the top of the return spring 234 abuts against the outer wall of the vertical rack 232, and when the vertical rack 232 descends to the lowest position, it can ensure that the vertical rack 232 and the second transmission gear 42 are always engaged in the static state; the function of the partition plate 24 is to form a physical separation under the liquid, dividing the liquid surface area of ​​the sedimentation tank 1 into multiple independent slag removal compartments.

[0034] Through the slag removal mechanism 2, the drive motor 214 drives the first drive gear 213 to rotate, which in turn drives the translation rack 211 meshing with it to move linearly. During the movement, the translation rack 211 synchronously drives all the second rotating gears 224 meshing with it to rotate. Each second rotating gear 224 drives the rotating shaft 222 and rotating plate 225 coaxial with it to rotate, and through meshing with the first rotating gear 223, drives the rotating shaft 222 and rotating plate 225 on the other side to rotate in the opposite direction, thereby realizing that the two rotating plates 225 of all slag-coating units close towards each other and form a slag discharge cylinder with the horizontal bottom plate 226. The presence of the partition plate 24 ensures that the slag in each compartment is collected independently. Subsequently, the drive motor 4 drives multiple second drive gears 42 to rotate through the drive shaft 41, driving all vertical racks 232 to rise synchronously. During the rise, the inclined surface of the inclined swing groove 233 of the vertical rack 232 pushes the end of the support frame 231 inserted therein, forcing the support frame 231 and one side of the connecting plate 212 fixedly connected to it to be lifted up. Since the connecting plate 212 is connected to all the slag-coating components 22 through the first vertical plate 221, and the second vertical plate 227 of the slag-coating component 22 is rotatably connected to the pool wall, the entire slag-removing mechanism 2 is lifted and tilted as a whole with the second vertical plate 227 as the axis. While tilting and discharging slag, the clean water pipe 25 is opened to rinse each slag discharge cylinder and complete the final removal of floating slag. After the operation is completed, the drive motor 4 reverses, the second transmission gear 42 reverses, the vertical rack 232 descends and resets, and the support frame 231 is guided back down through the inclined swing groove 233, which drives the slag-removing mechanism 2 to return to the horizontal. At the same time, the transmission motor 214 reverses, drives the translation rack 211 to move in the opposite direction, so that each rotating plate 225 opens, the slag discharge cylinder disintegrates, and all parts return to the initial position to prepare for the next work cycle.

[0035] Reference Figure 2 - Figure 12 The sludge scraping assembly 3 includes two toothed threaded rods 31 rotatably connected to the inner wall of the sedimentation tank 1. A scraper plate 32 is threaded between the two toothed threaded rods 31. The bottom of the scraper plate 32 is slidably connected to the inner wall of the sedimentation tank 1. Two transmission helical gears 43 are also fixedly connected to the outer wall of the drive shaft 41. The two transmission helical gears 43 respectively mesh with the helical gears on the corresponding toothed threaded rods 31. The sludge scraping assembly 3 also includes two roller frames 33 fixedly installed on the inner wall of the sedimentation tank 1, and two rope winding devices 36 fixedly installed on the outer wall of the sedimentation tank 1. The roller inside the roller frame 33 is connected to a partition moving rod 34. Both ends of the partition moving rod 34 are fixedly connected to connecting ropes 35. The ends of the two connecting ropes 35 on the same side away from the partition moving rod 34 are connected to the rope winding devices 36.

[0036] Specifically, the toothed threaded rod 31, through its threaded structure, engages with the threaded hole on the scraper plate 32, converting its rotational motion into linear motion of the scraper plate 32 along the bottom of the tank. One end of the scraper plate 31 is equipped with a helical gear, which meshes with the transmission helical gear 43 on the drive shaft 41, thereby receiving power from the drive motor 4 to drive its own rotation. The scraper plate 32, via a threaded connection, straddles the two toothed threaded rods 31, its bottom sliding in contact with the bottom of the sedimentation tank 1. Driven by the toothed threaded rods 31, it moves along the bottom of the tank. The bottom reciprocates in a linear motion to scrape and push the sludge settled at the bottom of the pool to the designated sludge discharge area; the inside of the roller frame 33 houses the roller, which can be pulled by the partition moving rod 34; the function of the partition moving rod 34 is to quickly form a temporary barrier during the sludge scraping operation to prevent the scraped sludge from flowing back or spreading before being pushed into the sludge discharge chamber 15, ensuring that the sludge is pushed into the sludge discharge chamber 15 in an orderly and complete manner; the rope winding device 36 controls the extension and retraction of the partition moving rod 34 by winding or releasing the connecting rope 35.

[0037] During the preparation stage of the sludge scraping operation, the rope winding device 36 is activated via the sludge scraping assembly 3 to wind up the connecting rope 35. The connecting rope 35 pulls the partition moving rod 34 to extend smoothly from the roller frame 33, quickly move to the set position and lock it, forming a reliable physical partition between the sedimentation zone and the sludge discharge chamber 15, creating boundary conditions for subsequent orderly sludge discharge. Subsequently, the drive motor 4 operates, and its power is transmitted through the drive shaft 41 to two transmission helical gears 43 fixed on it. These two transmission helical gears 43 are respectively connected to the left and right sides. The helical gear at the end of the toothed threaded rod 31 engages to transmit power to the toothed threaded rod 31 and ensure that the two rotate synchronously. The rotating toothed threaded rod 31 drives the scraper 32, which is threaded with it, to move linearly along the bottom of the pool towards the sludge discharge chamber 15. During the movement, the scraper 32 scrapes and pushes the bottom sludge accumulated at the bottom of the pool forward, and enters the sludge discharge chamber 15 through the connecting port 14. After the sludge is discharged, all components reset in reverse coordination to prepare to receive the next batch of waste liquid, thereby realizing the full automation of sludge and sludge separation and removal.

[0038] Reference Figure 10 - Figure 11 The sedimentation tank 1 has a slag discharge chamber 13 and a sludge discharge chamber 15 inside. The sludge discharge chamber 15 is connected to the interior of the sedimentation tank 1 by a communication port 14. The inner walls of the slag discharge chamber 13 and the sludge discharge chamber 15 are connected to a valved discharge pipe 16. The outer wall of the sedimentation tank 1 is connected to a drain pipe 11 and a water inlet pipe 12. Both the drain pipe 11 and the water inlet pipe 12 are connected to the interior of the sedimentation tank 1.

[0039] The set sedimentation tank 1 is used for water inlet pipe 12 to input water and drain pipe 11 to output purified liquid. The slag discharge chamber 13 and sludge discharge chamber 15 receive and temporarily store scum and sludge respectively through the connection port 14 and the action of the mechanism. Finally, the solid waste is discharged by their respective valved discharge pipes 16, thus realizing a continuous and automated treatment process for paint stripping waste liquid.

[0040] Working principle of the invention: During operation, the paint stripping waste liquid to be treated is pumped into the sedimentation tank 1 through the inlet pipe 12 on the outer wall of the sedimentation tank 1. After the device stops feeding water, it enters the static sedimentation stage. Under the action of gravity, the heavier solid suspended matter such as paint residue and filler in the waste liquid gradually sinks to the bottom of the tank to form bottom sludge. At the same time, the lighter scum produced by density difference or chemical reaction floats to the surface of the liquid. During this period, the multiple scum-coating components 22 in the scum removal mechanism 2 are in the open state and placed horizontally in the tank, and the sludge scraping component 3 is also in the initial position.

[0041] After sedimentation is complete, the drive motor 214 in the translation component 21 starts, driving the first drive gear 213 on its output shaft to rotate. Since the first drive gear 213 meshes with the translation rack 211, it drives the translation rack 211 to slide along the top of the connecting plate 212. When the translation rack 211 slides, it drives the second rotating gear 224 to rotate. The first rotating gear 223, which meshes with the second rotating gear 224, rotates in the opposite direction. Thus, the two gears drive the two rotating shafts 222 connected to them and the rotating plate 225 fixed on them to rotate in opposite directions. Multiple slag-coating components 22 operate synchronously, causing all rotating plates 225 to rotate inward, eventually enclosing them together with the fixed horizontal bottom plate 226, forming a slag discharge cylinder with an open top at each slag-coating unit, which gathers, aggregates and seals the slag in the liquid surface area inside.

[0042] Meanwhile, to ensure that the sludge scraping operation is not disturbed, the rope winding device 36 in the sludge scraping assembly 3 starts to work. By winding the connecting rope 35, it pulls the partition moving rod 34, causing it to extend from the roller frame 33 and quickly move laterally to form a physical partition, temporarily isolating the sedimentation area from the sludge discharge chamber 15, ensuring that the sludge pushed by the scraper plate 32 enters the sludge discharge chamber 15 in an orderly manner.

[0043] After the slag discharge cylinder is formed, the drive motor 4 runs, and the drive shaft 41 drives the multiple second transmission gears 42 fixed on its outer wall to rotate. The second transmission gears 42 mesh with the vertical rack 232 that is slidably connected to the inner wall of the sedimentation tank 1, driving the vertical rack 232 to move upward. As the vertical rack 232 continues to rise, the inclined surface of its inclined swing groove 233 forces the end of the support frame 231 to slide in the groove, thereby lifting one side of the entire slag removal mechanism 2 connected by the connecting plate 212, so that all the slag-wrapping components 22 that have been formed into cylinders are lifted as a whole around the rotation connection point between its second vertical plate 227 and the tank wall, forming an inclined state for slag discharge.

[0044] When the slag-coating assembly 22 is raised to its highest position, the rack reaches the end of its stroke and generates intermittent tooth topping. Under the continuous rotation of the second transmission gear 42, it transmits slight vibrations to the entire slag-removing mechanism 2, which helps to shake off the stubborn floating slag attached to the inner wall of the slag discharge cylinder and improves the slag discharge efficiency. At the same time, the toothed threaded rod 31 begins to drive the sludge scraper 32 connected to it to slide along the bottom of the pool, pushing the sludge settled at the bottom toward the connecting port 14 in the direction of the sludge discharge chamber 15.

[0045] Next, the valves of the clean water pipes 25 fixedly connected to the top of the multiple first vertical plates 221 are opened, and high-pressure clean water is sprayed into the interior of the inclined slag discharge cylinder to thoroughly flush the inner wall of the cylinder, washing away all the residual scum, and discharging it along the inclined cylinder into the slag discharge chamber 13 on the side wall of the sedimentation tank 1. The flushing wastewater and scum enter the slag discharge chamber 13 together. At the same time, the sludge scraper 32 pushes the accumulated bottom sludge into the sludge discharge chamber 15 through the connecting port 14. Finally, the valved discharge pipes 16 connected to the inner walls of the slag discharge chamber 13 and the sludge discharge chamber 15 are opened respectively to discharge the scum slurry and concentrated sludge collected here from the system for subsequent treatment or external transportation.

[0046] After discharge, the drive motor 4 reverses, and the second transmission gear 42 reverses to release the vertical rack 232. The vertical rack 232 slides downward to reset, driving the support frame 231 and the entire slag removal mechanism 2 to descend and return to a horizontal state. At the same time, the drive motor 214 of the translation component 21 reverses, causing the rotating plate 225 to open, the slag discharge cylinder to disassemble, and the slag wrapping component 22 to return to its initial unfolded state. The scraper 32 also returns to its starting position under the drive of the toothed threaded rod 31; the partition moving rod 34 retracts the winding frame 33 under the action of the rope winding device 36. After all components are reset, the drain pipe 11 is opened to discharge the purified supernatant in the sedimentation tank 1 into the subsequent recycling system, thereby realizing a fully automatic and continuous paint stripping waste liquid recycling and regeneration operation.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An environmentally friendly fully automatic recycling and regeneration device for paint stripping waste liquid, comprising a sedimentation tank (1) and a drive motor (4) fixedly installed on the outer wall of the sedimentation tank (1), wherein a drive shaft (41) is sleeved on the output shaft of the drive motor (4), characterized in that: It also includes a slag removal mechanism (2) set above the sedimentation tank (1) and a sludge scraping assembly (3) set below the sedimentation tank (1). The slag removal mechanism (2) includes multiple slag-coating assemblies (22) for collecting slag, a translation assembly (21) for driving the slag-coating assembly (22) to run, and a lifting assembly (23) for the slag-coating assembly (22) to form an inclined state. The slag-coating assembly (22) includes a second vertical plate (227) rotatably connected to the outer wall of the sedimentation tank (1), and a first vertical plate (221) placed on the outer wall of the sedimentation tank (1). A horizontal bottom plate (226) is fixedly connected between the first vertical plate (221) and the second vertical plate (227). Two rotating shafts (222) are rotatably connected between the first vertical plate (221) and the second vertical plate (227). The two rotating shafts (222) are symmetrically arranged on both sides of the horizontal bottom plate (226). A rotating plate (225) is fixedly connected to the outer wall of each of the two rotating shafts (222). The two rotating plates (225) rotate with the horizontal bottom plate (226) through the rotating shafts (222) to form a slag discharge cylinder.

2. The environmentally friendly fully automatic recycling and regeneration device for paint stripping waste liquid according to claim 1, characterized in that: Two rotating shafts (222) pass through one end of the first vertical plate (221) and are respectively fixedly connected to a first rotating gear (223) and a second rotating gear (224). The first rotating gear (223) meshes with the second rotating gear (224), and a clean water pipe (25) is fixedly connected between the tops of the multiple first vertical plates (221).

3. The environmentally friendly fully automatic recycling and regeneration device for paint stripping waste liquid according to claim 2, characterized in that: The translation component (21) includes a connecting plate (212) placed on the outer wall of the sedimentation tank (1). The connecting plate (212) is fixedly connected to the bottom of a plurality of first upright plates (221). A translation rack (211) is slidably connected to the top of the connecting plate (212). A drive motor (214) is fixedly connected to the top of the connecting plate (212). A first drive gear (213) is sleeved on the output shaft of the drive motor (214). The translation rack (211) meshes with the first drive gear (213) and a plurality of second rotating gears (224) respectively.

4. The environmentally friendly fully automatic recycling and regeneration device for paint stripping waste liquid according to claim 3, characterized in that: The lifting assembly (23) includes multiple support frames (231) fixedly connected to the outer wall of the connecting plate (212) and multiple vertical racks (232) slidably connected to the inner wall of the sedimentation tank (1). The vertical racks (232) have inclined swing grooves (233) inside. The ends of the support frames (231) extend into the inclined swing grooves (233) and can slide in the inclined swing grooves (233).

5. The environmentally friendly fully automatic recycling and regeneration device for paint stripping waste liquid according to claim 4, characterized in that: The outer wall of the drive shaft (41) is fixedly connected with a plurality of second transmission gears (42), the vertical rack (232) meshes with the corresponding second transmission gear (42), and the lifting assembly (23) also includes a plurality of return springs (234) fixedly installed on the inner wall of the sedimentation tank (1), the top of the return spring (234) abuts against the outer wall of the vertical rack (232).

6. The environmentally friendly fully automatic recycling and regeneration device for paint stripping waste liquid according to claim 1, characterized in that: The inner wall of the sedimentation tank (1) is fixedly connected with multiple baffles (24), and the multiple baffles (24) are respectively located between two adjacent slag-coating components (22).

7. The environmentally friendly fully automatic recycling and regeneration device for paint stripping waste liquid according to claim 1, characterized in that: The sludge scraping assembly (3) includes two toothed threaded rods (31) rotatably connected to the inner wall of the sedimentation tank (1), and a scraper plate (32) is threaded between the two toothed threaded rods (31). The bottom of the scraper plate (32) is slidably connected to the inner wall of the sedimentation tank (1). The outer wall of the drive shaft (41) is also fixedly connected to two transmission helical gears (43), and the two transmission helical gears (43) respectively mesh with the helical gears on the corresponding toothed threaded rods (31).

8. The environmentally friendly fully automatic recycling and regeneration device for paint stripping waste liquid according to claim 1, characterized in that: The sludge scraping assembly (3) also includes two roller frames (33) fixedly installed on the inner wall of the sedimentation tank (1) and two rope winding devices (36) fixedly installed on the outer wall of the sedimentation tank (1). The roller inside the roller frame (33) is connected to a partition moving rod (34). Both ends of the partition moving rod (34) are fixedly connected to a connecting rope (35). The ends of the two connecting ropes (35) on the same side away from the partition moving rod (34) are connected to the rope winding device (36).

9. The environmentally friendly fully automatic recycling and regeneration device for paint stripping waste liquid according to claim 1, characterized in that: The sedimentation tank (1) has a slag discharge chamber (13) and a sludge discharge chamber (15) inside. The sludge discharge chamber (15) is connected to the interior of the sedimentation tank (1) by a communication port (14). The inner walls of the slag discharge chamber (13) and the sludge discharge chamber (15) are connected to valved discharge pipes (16).

10. The environmentally friendly fully automatic recycling and regeneration device for paint stripping waste liquid according to claim 1, characterized in that: The outer wall of the sedimentation tank (1) is connected to a drain pipe (11) and an inlet pipe (12), both of which are connected to the interior of the sedimentation tank (1).

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