An electrophoretic coating wastewater treatment device

Abstract

This invention belongs to the field of wastewater treatment, specifically an electrophoretic coating wastewater treatment device, including a treatment tank. A lifting frame is installed on the top side of the treatment tank, and a receiving cover is fixed to the outside of the frame. A mixing discharge pipe is installed in the middle of the treatment tank, and an air flotation pipe is installed inside the mixing discharge pipe. Multiple release devices are installed on the outside of the air flotation pipe, and multiple discharge holes are opened on the surface of the mixing discharge pipe. A drain valve is installed at the bottom of the treatment tank, and recovery tanks are opened on both sides of the treatment tank. This design achieves efficient transfer and cleaning of waste on the water surface. The cleaning process includes slow discharge and timed large-volume cleaning, ensuring no cleaning dead corners. Furthermore, because it utilizes the ripples of the water flow for cleaning, it reduces the energy consumption required for cleaning. The overall structural design is simple and convenient, reducing the failure rate of the cleaning structure and the steps involved in post-treatment and maintenance.

Description

Technical Field

[0001] This invention belongs to the field of wastewater treatment, specifically an electrophoretic coating wastewater treatment device. Background Technology

[0002] Electrophoretic coating wastewater is a complex type of industrial wastewater that mainly originates from multiple stages of the electrophoretic coating production line, including ultrafiltration liquid, rinsing water, equipment cleaning water, and pretreatment wastewater. Its main pollutants include high concentrations of organic matter, suspended solids, heavy metal ions, phosphates, etc.

[0003] In the pretreatment stage, electrophoretic coating wastewater is generally treated using an air flotation device to remove suspended solids and grease from the wastewater. The air flotation device generates a large number of microbubbles, which adsorb the suspended solids and grease in the wastewater onto the bubbles, forming scum, thereby achieving solid-liquid separation.

[0004] In traditional electrophoretic wastewater flotation treatment equipment, movable scrapers are generally used to remove the waste that floats to the surface of the water to one side. However, the waste on the surface of the water is not stable. When using active cleaning parts such as scrapers for cleaning, it is necessary to ensure that the cleaning parts can perfectly smooth the water surface and prevent the waste from escaping from the bottom of the scraper. In addition, mechanically driven scrapers also require regular maintenance, replacement and upkeep.

[0005] Therefore, the present invention provides an electrophoretic coating wastewater treatment device. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: The electrophoretic coating wastewater treatment equipment of the present invention includes a treatment tank, a lifting frame is provided on the outside of the treatment tank near the top, a receiving cover is fixed to the outside of the frame, a mixing discharge pipe is provided in the middle of the treatment tank, an air flotation pipe is provided inside the mixing discharge pipe, multiple release devices are installed on the outside of the air flotation pipe, multiple discharge holes are opened on the surface of the mixing discharge pipe, a sewage valve is installed at the bottom of the treatment tank, and a recovery tank is opened on both sides of the treatment tank.

[0008] Wastewater mixed with flocculant is fed into a mixing discharge pipe, while dissolved air water (DAW) is injected into a flotation pipe. DAW refers to water in which air or gas is dissolved, creating a supersaturated state with a high concentration of gas. The DAW is released into the mixing discharge pipe via a release device, where it comes into contact with the wastewater. The released DAW rapidly releases a large number of tiny bubbles, which combine with particles in the wastewater, causing the particles to rise and separating the lighter particles. Heavier impurities settle to the bottom under gravity, and these particles are periodically discharged through a drain valve. Clean water is discharged through a recovery tank, completing the wastewater treatment process. As particles accumulate on the upper surface of the treatment tank, the mixing discharge pipe, located in the center, causes a large number of bubbles from the discharge port to rise from the center of the tank, creating outward-moving waves on the water surface. The particles transferred to the water surface will concentrate at the edge of the treatment tank. As wastewater is continuously injected, excess water will be discharged from the perimeter of the treatment tank and collected by the receiving hood, thus continuously transferring the particulate waste outward. After a period of time, the frame and receiving hood can be controlled to move downward, so that the wastewater above will no longer be supported and can be quickly transferred outward into the receiving hood, thus clearing a large amount of waste at the edge at once. Alternatively, the frame can be kept stationary, allowing the waste to be discharged under the action of water waves. Through this setting, the function of efficiently transferring and cleaning waste on the water surface is achieved. The cleaning process includes slow discharge and timed large-scale cleaning, which can ensure that there are no dead corners in the cleaning. Since the cleaning is carried out by the flow ripples of the water itself, the energy consumption required for cleaning is reduced. At the same time, the overall structural design is simple and convenient, reducing the failure rate of the cleaning structure and the steps of post-processing and maintenance.

[0009] Preferably, recycling tanks are fixed to both sides of the treatment tank, and the recycling tanks are connected to the recycling trough. A clean water pipe is fixed to the bottom of the recycling tank. Two dissolved air tanks are arranged on the outside of the treatment tank. The clean water pipe is connected to the dissolved air tanks through a transmission pipe. The air flotation pipe is connected to the dissolved air tanks. A filter valve is installed at the end of the recycling tank, allowing the clean water entering the recycling tank to undergo a final filtration. The recycling trough is inclined, and the filtered particles will eventually move along the recycling trough to the bottom of the treatment tank. At the same time, the opening size of the filter valve can be controlled to control the water output speed. The dissolved air tank is used to dissolve compressed air into the clean water. Part of the recycled clean water is reused and injected into the dissolved air tank through the transmission pipe. The dissolved air tank turns the clean water into dissolved air water and then passes it to the air flotation pipe, so that the equipment can work without the input of an external water source.

[0010] Preferably, the mixing discharge pipe consists of a vertical pipe and a horizontal pipe. The air flotation pipe has the same shape as the mixing discharge pipe. A pressure valve is fixed to the top of the air flotation pipe. The pressure valve is located on the outer side of the top of the mixing discharge pipe. The mixing discharge pipe is designed so that the mixed water discharged from the discharge hole can be injected into the treatment tank relatively evenly. The pressure valve depressurizes part of the dissolved water and discharges it upwards, thereby generating a large number of bubbles in the middle of the treatment tank, thus ensuring that ripples are generated on the water surface above to push the waste outwards.

[0011] Preferably, the top surface of the receiving cover is recessed, and recycling pipes are fixed to both sides of the receiving cover near the top. The ends of the recycling pipes are made of elastic material. The structure of the receiving cover can effectively catch the wastewater overflowing from around the processing tank and the waste carried in the wastewater. At the same time, the wastewater flows along the receiving cover and is eventually discharged outward from the recycling pipes. During the raising and lowering of the frame and the receiving cover, the elastic material at the end of the recycling pipes can deform, which facilitates a stable connection between the recycling pipes and external pipelines.

[0012] Preferably, two parallel hydraulic rods are provided on one side of the receiving cover, and a telescopic rod is provided on the other side of the receiving cover. The top of the telescopic rod is fixed to the bottom of the receiving cover, and the bottom of the telescopic rod is fixed to the outside of the processing box. The lifting and lowering of the receiving cover and the surrounding frame are controlled by the extension and retraction of the hydraulic rods. The telescopic rod is provided to ensure the balance of the lifting and lowering of the receiving cover.

[0013] Preferably, the treatment tank is equipped with two sets of baffles, which are located on both sides of the mixing discharge pipe. Each set contains multiple baffles that are inclined and arranged in parallel. When wastewater and air bubbles are discharged from the mixing discharge pipe, some of them will move to the sides and come into contact with the inclined baffles. Heavier particles in the wastewater will move downwards along the baffles, while lighter particles will move upwards with the water flow and eventually float to the surface. Large particles that were originally carried upwards by the water flow and air bubbles will also move downwards along the surface of the baffles if they fall midway, eventually concentrating at the bottom of the treatment tank. At the same time, the baffles will also prevent the water flow from moving directly to the recovery tank, reducing the particle content of the clean water in the recovery tank.

[0014] Preferably, a supply box is fixed to the outside of the treatment box, the supply box is connected to the mixing discharge pipe, and a raw material pipe is provided on the outside of the supply box. The raw material pipe is connected to a hydraulic rod, and the hydraulic rod and the supply pipe are connected by a connecting pipe. The hydraulic rod can use conventional hydraulic equipment, or the wastewater from the raw material pipe can be introduced into the bottom of the outer cylinder of the hydraulic rod, thereby lifting the inner rod of the hydraulic rod upward. Due to the large bottom area of ​​the hydraulic rod, the lifting force is multiplied several times, so a low water pressure is not required to lift the receiving cover upward. When it is necessary to shorten the hydraulic rod, the connecting pipe is opened; this can be controlled by a solenoid valve; the wastewater in the hydraulic rod is discharged into the supply box. Under the weight of the receiving cover, the receiving cover sinks quickly, and the wastewater in the supply box continues to be injected into the mixing discharge pipe at a predetermined speed. Through this setting, the water pressure of the wastewater is utilized, and the receiving cover can be raised and lowered periodically.

[0015] Preferably, the top of both the hydraulic rod and the telescopic rod is fixedly connected to a support platform, the top of which is adapted to the shape of the bottom of the receiving cover, and multiple baffles are fixedly connected to the outer side of the top surface of the receiving cover. The support platform is used to ensure that the hydraulic rod and the telescopic rod can stably support the receiving cover, and the baffles are used to reduce the splashing of wastewater from the top surface of the receiving cover.

[0016] Preferably, the baffle plate has multiple longitudinal vertical grooves on the side facing the mixing discharge pipe. The multiple vertical grooves are arranged in parallel. When the wastewater enters the vertical groove, the force of the water flow on the wastewater will be reduced, so that the particles in the wastewater can float or sink according to their own gravity.

[0017] Preferably, the baffle plate has multiple transverse grooves on the side away from the mixing discharge pipe. The output end of the dissolved gas tank is connected to the baffle plate through a supply pipe. Multiple connecting holes are provided in the transverse grooves. The dissolved gas water from the dissolved gas tank is directly fed into the connecting holes of the baffle plate through the supply pipe. The dissolved gas water discharged from the connecting holes quickly depressurizes and releases bubbles, allowing particles passing through adjacent baffle plates to adhere to the baffle plate a second time. This allows the particles in the wastewater to increase their buoyancy again, thereby transferring them upwards and further ensuring the treatment effect of the equipment.

[0018] The beneficial effects of this invention are as follows:

[0019] 1. The electrophoretic coating wastewater treatment equipment of this invention introduces wastewater mixed with flocculant into a mixing discharge pipe, while simultaneously injecting dissolved air water into an air flotation pipe. Dissolved air water refers to water in which air or gas is dissolved, creating a supersaturated state with a high concentration of gas. The dissolved air water is released into the mixing discharge pipe through a release device, contacting the wastewater. The released dissolved air water rapidly releases a large number of microbubbles, which combine with particles in the wastewater, thereby transferring the particles upwards and separating the light particles. Heavier impurities settle to the bottom under gravity, and the bottom particles are periodically discharged through a drain valve. Clean water is discharged through a recovery tank, thus completing the wastewater treatment process. As particles accumulate on the upper surface of the treatment tank, because the mixing discharge pipe is located in the middle of the treatment tank, a large number of bubbles discharged from the discharge hole rise from the middle of the treatment tank, forming a continuous layer of bubbles in the middle of the water surface. The outward-pushing waves cause particles transferred to the water surface to concentrate at the edge of the treatment tank. As wastewater is continuously injected, excess water is discharged from around the treatment tank and collected by the receiving hood, thus continuously transferring particulate waste outward. After a period of time, the frame and receiving hood can be controlled to move downward, so that the wastewater above, without support, can quickly be transferred outward into the receiving hood, thus clearing a large amount of waste at the edge at once. Alternatively, the frame can remain stationary, allowing only the waste to be discharged under the action of water waves. This design achieves the function of efficiently transferring and cleaning waste from the water surface. The cleaning process includes slow discharge and timed large-scale cleaning, ensuring no cleaning dead corners. Since it utilizes the flow ripples of the water itself for cleaning, the energy consumption required for cleaning is reduced. At the same time, the overall structural design is simple and convenient, reducing the failure rate of the cleaning structure and the steps of post-processing and maintenance.

[0020] 2. The electrophoretic coating wastewater treatment equipment of the present invention has a filter valve installed at the end of the recovery tank, which allows the clean water entering the recovery tank to be filtered once last time. The recovery tank is inclined, and the filtered particles will eventually move along the recovery tank to the bottom of the treatment tank. At the same time, the opening size of the filter valve can be controlled to control the water outflow rate. The dissolved air tank is used to dissolve compressed air into the clean water. Part of the recovered clean water is reused and injected into the dissolved air tank through the transmission pipe. After the dissolved air tank turns the clean water into dissolved air water, it is then transmitted to the air flotation tube, so that the equipment can work without the input of an external water source. Attached Figure Description

[0021] The invention will now be further described with reference to the accompanying drawings.

[0022] Figure 1 This is a first-view perspective perspective view of the present invention;

[0023] Figure 2 This is a second-view perspective perspective view of the present invention;

[0024] Figure 3 This is a perspective view of the processing box and baffle of the present invention;

[0025] Figure 4 This is a cross-sectional view of the processing box of the present invention;

[0026] Figure 5 This is a perspective view of the mixing discharge pipe of the present invention;

[0027] Figure 6 This is a perspective view of the hydraulic rod of the present invention;

[0028] Figure 7 This is a perspective view of the frame and receiving cover of the present invention;

[0029] Figure 8 This is a perspective view of the baffle plate of the present invention;

[0030] In the diagram: 1. Processing box; 2. Enclosure; 3. Receiving cover; 4. Recovery pipe; 5. Hydraulic rod; 6. Supply box; 7. Raw material pipe; 8. Recovery box; 9. Supply pipe; 10. Baffle plate; 11. Dissolved gas tank; 12. Telescopic rod; 13. Transmission pipe; 14. Mixed discharge pipe; 15. Clean water pipe; 16. Sewage valve; 17. Recovery tank; 18. Discharge hole; 19. Pressure valve; 20. Air flotation pipe; 21. Release device; 23. Connecting pipe; 24. Baffle plate; 25. Vertical trough; 26. Horizontal trough. Detailed Implementation

[0031] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0032] like Figures 1 to 8 As shown in the figure, an electrophoretic coating wastewater treatment device according to an embodiment of the present invention includes a treatment tank 1. A lifting frame 2 is provided on the outer side of the treatment tank 1 near the top. A receiving cover 3 is fixed to the outer side of the frame 2. A mixing discharge pipe 14 is provided in the middle of the treatment tank 1. An air flotation pipe 20 is provided inside the mixing discharge pipe 14. Multiple release devices 21 are installed on the outer side of the air flotation pipe 20. Multiple discharge holes 18 are opened on the surface of the mixing discharge pipe 14. A sewage valve 16 is installed at the bottom of the treatment tank 1. A recycling tank 17 is opened on both sides of the treatment tank 1.

[0033] Wastewater mixed with flocculant is introduced into the mixing discharge pipe 14, while dissolved air water is injected into the flotation pipe 20. Dissolved air water refers to water in which air or gas is dissolved, making the water supersaturated with a high concentration of gas. The dissolved air water is released into the mixing discharge pipe 14 through the release device 21 and comes into contact with the wastewater. The released dissolved air water will quickly release a large number of microbubbles, which will combine with the particles in the wastewater, thereby transferring the particles in the wastewater upward and separating the light particles in the wastewater. The heavier impurities will sink to the bottom under the action of gravity. The bottom particles are discharged through the drain valve 16 at regular intervals, and the clean water will be discharged out through the recovery tank 17, thus completing the wastewater treatment process. As the particles accumulate on the upper surface of the treatment tank 1, since the mixing discharge pipe 14 is located in the middle of the treatment tank 1, a large number of bubbles discharged from the discharge hole 18 float upward from the middle of the treatment tank 1, thus forming a continuous outward push in the middle of the water surface. The waves cause particles transferred to the water surface to concentrate at the edge of the treatment tank 1. As wastewater is continuously injected, excess water is discharged from around the treatment tank 1 and collected by the receiving hood 3, thus continuously transferring the particulate waste outwards. After a period of time, the enclosure 2 and the receiving hood 3 can be moved downwards, so that the wastewater above is no longer supported and can be quickly transferred outwards into the receiving hood 3, thus clearing a large amount of waste at the edge at once. Alternatively, the enclosure 2 can be kept stationary, allowing the waste to be discharged under the action of water waves. This setup achieves the function of efficiently transferring and cleaning waste on the water surface. The cleaning process includes slow discharge and timed large-scale cleaning, ensuring no cleaning dead corners. Since the cleaning is carried out using the flow ripples of the water itself, the energy consumption required for cleaning is reduced. At the same time, the overall structural design is simple and convenient, reducing the failure rate of the cleaning structure and the steps of post-processing and maintenance.

[0034] Both sides of the processing box 1 are fixedly connected to a recycling box 8, which is connected to a recycling tank 17. A clean water pipe 15 is fixedly connected to the bottom of the recycling box 8. Two dissolved air tanks 11 are arranged on the outside of the processing box 1. The clean water pipe 15 is connected to the dissolved air tank 11 through a transmission pipe 13. The air flotation pipe 20 is connected to the dissolved air tank 11.

[0035] During operation, a filter valve is installed at the end of the recycling tank 8, allowing the clean water entering the recycling tank 8 to undergo a final filtration. The recycling tank 17 is inclined, and the filtered particles will eventually move along the recycling tank 17 to the bottom of the treatment tank 1. At the same time, the opening size of the filter valve can be controlled to control the water output speed. The dissolved air tank 11 is used to dissolve compressed air into the clean water. Part of the recycled clean water is reused and injected into the dissolved air tank 11 through the transmission pipe 13. After the dissolved air tank 11 turns the clean water into dissolved air water, it is then transmitted to the air flotation pipe 20, so that the equipment can operate without the input of an external water source.

[0036] The mixing discharge pipe 14 consists of a vertical pipe and a horizontal pipe. The air flotation pipe 20 has the same shape as the mixing discharge pipe 14. A pressure valve 19 is fixed to the top of the air flotation pipe 20. The pressure valve 19 is located on the outside of the top of the mixing discharge pipe 14.

[0037] During operation, the mixing discharge pipe 14 allows the mixed water discharged from the discharge hole 18 to be injected into the treatment tank 1 relatively evenly. The pressure valve 19 depressurizes part of the dissolved water and discharges it upwards, thereby generating a large number of bubbles in the middle of the treatment tank 1, thus ensuring that ripples are generated on the water surface above to push the waste outwards.

[0038] The top surface of the receiving cover 3 is recessed, and recycling tubes 4 are fixed to both sides of the receiving cover 3 near the top. The ends of the recycling tubes 4 are made of elastic material.

[0039] During operation, the structure of the receiving cover 3 can effectively catch the wastewater and waste materials carried in the wastewater overflowing from around the processing tank 1. At the same time, the wastewater flows along the receiving cover 3 and is eventually discharged outward from the recycling pipe 4. During the lifting and lowering process of the frame 2 and the receiving cover 3, the elastic material at the end of the recycling pipe 4 can deform, which facilitates a stable connection between the recycling pipe 4 and the external pipeline.

[0040] Two parallel hydraulic rods 5 are provided on one side of the receiving cover 3, and a telescopic rod 12 is provided on the other side of the receiving cover 3. The top of the telescopic rod 12 is fixed to the bottom of the receiving cover 3, and the bottom of the telescopic rod 12 is fixed to the outside of the processing box 1.

[0041] During operation, the receiving cover 3 and the frame 2 are raised and lowered by the extension and retraction of the hydraulic rod 5, and the extension rod 12 is set to ensure the balance of the raising and lowering of the receiving cover 3.

[0042] The processing box 1 is equipped with two sets of baffles 10. The two sets of baffles 10 are located on both sides of the mixing discharge pipe 14. Each set contains multiple baffles 10 that are inclined and the multiple baffles 10 in each set are arranged in parallel.

[0043] During operation, when wastewater and air bubbles are discharged from the mixing discharge pipe 14, some of them will move to both sides and come into contact with the inclined baffle plate 10. The heavier particles in the wastewater will move downward along the baffle plate 10, while the lighter particles will move upward with the water flow and eventually float to the surface. If the large particles that were originally carried up by the water flow and air bubbles fall down in the middle, they will also move downward along the surface of the baffle plate 10 and eventually concentrate at the bottom of the treatment tank 1. At the same time, the baffle plate 10 will also prevent the water flow from moving directly to the position of the recovery tank 17, reducing the particle content of the clean water in the recovery tank 17.

[0044] A supply box 6 is fixedly connected to the outside of the processing box 1. The supply box 6 is connected to the mixing discharge pipe 14. A raw material pipe 7 is provided on the outside of the supply box 6. The raw material pipe 7 is connected to the hydraulic rod 5. The hydraulic rod 5 and the supply pipe 9 are connected through a connecting pipe 23.

[0045] During operation, the hydraulic rod 5 can be operated using traditional hydraulic equipment, or wastewater from the raw material pipe 7 can be introduced into the bottom of the outer cylinder of the hydraulic rod 5, thereby lifting the inner rod of the hydraulic rod 5 upward. Due to the large bottom area of ​​the hydraulic rod 5, the lifting force is multiplied several times, so a low water pressure is not required to lift the receiving cover 3 upward. When it is necessary to shorten the hydraulic rod 5, the connecting pipe 23 is opened; this can be controlled by a solenoid valve; the wastewater in the hydraulic rod 5 is discharged into the supply tank 6. Under the weight of the receiving cover 3, the receiving cover 3 sinks rapidly, and the wastewater in the supply tank 6 continues to be injected into the mixing discharge pipe 14 at a predetermined speed. Through this setting, the water pressure of the wastewater is utilized, and the receiving cover 3 can be raised and lowered periodically.

[0046] The top of both the hydraulic rod 5 and the telescopic rod 12 is fixedly connected to a support platform. The top of the support platform is adapted to the shape of the bottom of the receiving cover 3. Multiple blocking plates 24 are fixedly connected to the outer side of the top surface of the receiving cover 3.

[0047] During operation, the support platform is used to ensure that the hydraulic rod 5 and the telescopic rod 12 can stably support the receiving cover 3, and the baffle plate 24 is used to reduce the splashing of wastewater from the top surface of the receiving cover 3.

[0048] The baffle plate 10 has multiple longitudinal vertical grooves 25 on the side facing the mixing discharge pipe 14, and the multiple vertical grooves 25 are arranged in parallel.

[0049] During operation, the force exerted by the water flow on the wastewater entering the vertical trough 25 is reduced, allowing the particles in the wastewater to float or sink according to their own gravity.

[0050] The baffle plate 10 has multiple transverse grooves 26 on the side away from the mixing discharge pipe 14. The output end of the dissolved gas tank 11 is connected to the baffle plate 10 through the supply pipe 9. Multiple connecting holes are provided in the transverse grooves 26.

[0051] During operation, the dissolved air water portion of the dissolved air tank 11 is directly fed into the connecting hole of the baffle plate 10 through the supply pipe 9. The dissolved air water discharged from the connecting hole is rapidly depressurized and releases bubbles, allowing particles passing through the adjacent baffle plate 10 to adhere to it a second time. This allows the particles in the wastewater to increase their buoyancy again, thereby transferring them upwards and further ensuring the treatment effect of the equipment.

[0052] During operation, wastewater mixed with flocculant is introduced into the mixing discharge pipe 14, while dissolved air water is injected into the flotation pipe 20. Dissolved air water refers to water in which air or gas is dissolved, making the water supersaturated with a high concentration of gas. The dissolved air water is released into the mixing discharge pipe 14 through the release device 21 and comes into contact with the wastewater. The released dissolved air water will quickly release a large number of microbubbles, which will combine with the particles in the wastewater, thereby transferring the particles in the wastewater upward and separating the light particles in the wastewater. The heavier impurities will sink to the bottom under the action of gravity and the bottom particles will be discharged through the drain valve 16 at regular intervals. The clean water will be discharged outward through the recovery tank 17, thus completing the wastewater treatment process. As the particles accumulate on the upper surface of the treatment tank 1, since the mixing discharge pipe 14 is located in the middle of the treatment tank 1, a large number of bubbles discharged from the discharge hole 18 will rise from the middle of the treatment tank 1, thus forming a continuous outward movement in the middle of the water surface. The pushing waves cause the particles transferred to the water surface to concentrate at the edge of the treatment tank 1. As wastewater is continuously injected, excess water is discharged from the periphery of the treatment tank 1 and collected by the receiving hood 3, thus continuously transferring the particulate waste outward. After a period of time, the enclosure 2 and the receiving hood 3 can be controlled to move downward, so that the wastewater above is no longer supported and can be quickly transferred outward into the receiving hood 3, thus clearing a large amount of waste at the edge at once. Alternatively, the enclosure 2 can be kept stationary, allowing the waste to be discharged under the action of water waves. Through this setting, the function of efficiently transferring and cleaning waste on the water surface is achieved. The cleaning process includes slow discharge and timed large-scale cleaning, which can ensure that there are no dead corners in the cleaning. Since the cleaning is carried out by the flow ripples of the water itself, the energy consumption required for cleaning is reduced. At the same time, the overall structural design is simple and convenient, reducing the failure rate of the cleaning structure and the steps of post-processing and maintenance.

[0053] A filter valve is installed at the end of the recycling tank 8, allowing the clean water entering the recycling tank 8 to undergo a final filtration. The recycling tank 17 is inclined, and the filtered particles will eventually move along the recycling tank 17 to the bottom of the treatment tank 1. At the same time, the opening size of the filter valve can be controlled to control the water output speed. The dissolved air tank 11 is used to dissolve compressed air into the clean water. Part of the recycled clean water is reused and injected into the dissolved air tank 11 through the transmission pipe 13. The dissolved air tank 11 turns the clean water into dissolved air water and then transmits it to the air flotation pipe 20, so that the equipment can work without the input of an external water source.

[0054] The mixing discharge pipe 14 allows the mixed water discharged from the discharge hole 18 to be injected into the treatment tank 1 more evenly. The pressure valve 19 depressurizes part of the dissolved water and discharges it upwards, thereby generating a large number of bubbles in the middle of the treatment tank 1, thus ensuring that ripples that push the waste outwards are generated on the water surface above.

[0055] The structure of the receiving cover 3 can effectively catch the wastewater and waste carried in the wastewater overflowing from around the processing box 1. At the same time, the wastewater flows along the receiving cover 3 and is eventually discharged outward from the recycling pipe 4. During the lifting and lowering process of the frame 2 and the receiving cover 3, the elastic material at the end of the recycling pipe 4 can deform, which facilitates the stable connection between the recycling pipe 4 and the external pipe.

[0056] The receiving cover 3 and the frame 2 are raised and lowered by the extension and retraction control of the hydraulic rod 5, and the extension rod 12 is set to ensure the balance of the raising and lowering of the receiving cover 3.

[0057] When wastewater and air bubbles are discharged from the mixing discharge pipe 14, some of them will move to both sides and come into contact with the inclined baffle 10. The heavier particles in the wastewater will move downward along the baffle 10, while the lighter particles will move upward with the water flow and eventually float to the surface. If the large particles that were originally carried up by the water flow and air bubbles fall down in the middle, they will also move downward along the surface of the baffle 10 and eventually concentrate at the bottom of the treatment tank 1. At the same time, the baffle 10 will also prevent the water flow from moving directly to the position of the recovery tank 17, reducing the particle content of the clean water in the recovery tank 17.

[0058] The hydraulic rod 5 can use traditional hydraulic equipment, or the wastewater from the raw material pipe 7 can be introduced into the bottom of the outer cylinder of the hydraulic rod 5, thereby lifting the inner rod of the hydraulic rod 5 upward. Due to the large bottom area of ​​the hydraulic rod 5, the lifting force is multiplied several times, so a low water pressure is not required to lift the receiving cover 3 upward. When it is necessary to shorten the hydraulic rod 5, the connecting pipe 23 is opened; it can be controlled by a solenoid valve; the wastewater in the hydraulic rod 5 is discharged into the supply tank 6. Under the weight of the receiving cover 3, the receiving cover 3 sinks quickly, and the wastewater in the supply tank 6 is still injected into the mixing discharge pipe 14 at a predetermined speed. Through this setting, the water pressure of the wastewater is utilized, and the receiving cover 3 can be raised and lowered periodically.

[0059] The support platform is used to ensure that the hydraulic rod 5 and the telescopic rod 12 can stably support the receiving cover 3, and the baffle plate 24 is used to reduce wastewater splashing out from the top surface of the receiving cover 3.

[0060] When wastewater enters vertical channel 25, the force of the water flow on the wastewater will be reduced, so that the particles in the wastewater can float up and sink according to their own gravity.

[0061] The dissolved air water from the dissolved air tank 11 is directly fed into the connecting hole of the baffle plate 10 through the supply pipe 9. The dissolved air water discharged from the connecting hole is rapidly depressurized and releases bubbles, allowing the particles passing through the adjacent baffle plate 10 to adhere to the baffle plate a second time. This allows the particles in the wastewater to increase their buoyancy again, thereby moving upward and further ensuring the treatment effect of the equipment.

[0062] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electrophoretic painting wastewater treatment apparatus characterized by comprising: Including processing box, the outside of processing box is provided with the frame that can lift near top, the outside of frame is fixedly connected with receiving cover, the middle part of processing box is provided with mixed discharge pipe, the inside of mixed discharge pipe is provided with air float pipe, the outside of air float pipe is installed with multiple releasers, the surface of mixed discharge pipe is provided with multiple exhaust holes, the bottom of processing box is installed with sewage valve, both sides of processing box are provided with recovery groove; Both sides of processing box are fixedly connected with recovery box, recovery box communicates with recovery groove, the bottom of recovery box is fixedly connected with clean water pipe, the outside of processing box is provided with two dissolved air tanks, clean water pipe communicates with dissolved air tank through transmission pipe, air float pipe communicates with dissolved air tank; The inside of processing box is provided with two groups of baffle plates, two groups of baffle plates are located on both sides of mixed discharge pipe respectively, each group contains multiple baffle plates arranged obliquely, and multiple baffle plates in each group are arranged in parallel; The side of baffle plate towards mixed discharge pipe is provided with multiple longitudinal vertical grooves, multiple vertical grooves are arranged in parallel; The side of baffle plate away from mixed discharge pipe is provided with multiple horizontal grooves, the output end of dissolved air tank communicates with baffle plate through supply pipe, multiple communication holes are arranged in horizontal groove; The mixed discharge pipe is composed of a vertical pipe and a horizontal pipe, the air float pipe is the same shape as the mixed discharge pipe, the top of air float pipe is fixedly connected with pressure valve, the pressure valve is located on the outside of the top of mixed discharge pipe; The outside of processing box is fixedly connected with supply box, supply box communicates with mixed discharge pipe, the outside of supply box is provided with raw material pipe.

2. The electrophoretic painting wastewater treatment apparatus according to claim 1, characterized by: The top surface of receiving cover is concave, both sides of receiving cover are fixedly connected with recovery pipe near top, the end of recovery pipe is made of elastic material.

3. The apparatus for treating electrophoretic painting wastewater according to claim 2, wherein: One side of receiving cover is provided below with two hydraulic rods arranged in parallel, the other side of receiving cover is provided below with telescopic rod, the top of telescopic rod is fixedly connected with the bottom of receiving cover, the bottom of telescopic rod is fixedly connected with the outside of processing box.

4. The electrophoretic painting wastewater treatment apparatus according to claim 3, characterized by: Raw material pipe communicates with hydraulic rod, hydraulic rod communicates with supply pipe through communication pipe.

5. The electrophoretic painting wastewater treatment apparatus according to claim 4, wherein: The top of hydraulic rod and telescopic rod is fixedly connected with supporting table, the top of supporting table is matched with the shape of the bottom of receiving cover, the top surface of receiving cover is fixedly connected with multiple blocking pieces outside.

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