Electrophoretic coating wastewater treatment equipment

Abstract

The invention belongs to the field of wastewater treatment, and particularly relates to electrophoretic coating wastewater treatment equipment which comprises a treatment box, a liftable enclosure frame is arranged on the outer side, close to the top, of the treatment box, a receiving cover is fixedly connected to the outer side of the enclosure frame, and a mixed discharge pipe is arranged in the middle of the treatment box. An air flotation pipe is arranged in the mixed discharge pipe, a plurality of releasers are installed on the outer side of the air flotation pipe, a plurality of discharge holes are formed in the surface of the mixed discharge pipe, a blow-down valve is installed at the bottom of the treatment box, and recovery grooves are formed in the two sides of the treatment box. The function of efficiently transferring and cleaning waste on the water surface is achieved, the cleaning process comprises slow discharging and timed large-scale cleaning, it can be guaranteed that no cleaning dead angle exists, due to the fact that cleaning is conducted through flowing ripples of water flow, energy consumption needed by cleaning is reduced, meanwhile, the overall structural design is simple and convenient, and cost is low. And the fault rate, post-treatment, maintenance and other steps of the cleaning structure are reduced.

Description

Technical Field

[0001] The invention belongs to the field of wastewater treatment, in particular to an electrophoretic coating wastewater treatment device. Background Art

[0002] Electrophoretic coating wastewater is a kind of industrial wastewater with complex components. It mainly comes from multiple links of the electrophoretic coating production line, including ultrafiltrate, flushing water, equipment cleaning water and pre-treatment wastewater. Its main pollutants include high concentrations of organic matter, suspended matter, heavy metal ions, phosphates, etc.

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

[0004] In traditional electrophoretic wastewater flotation treatment equipment, a movable scraper is generally used to remove the waste that floats to the water surface to one side. However, the waste on the water surface floats unsteadily. When using active cleaning parts such as scrapers for cleaning, it is necessary not only to ensure that the cleaning parts can perfectly smooth the water surface, but also to prevent the waste from escaping from the bottom of the scraper. In addition, the mechanically driven scraper also needs to be regularly maintained, replaced and serviced.

[0005] To this end, the present invention provides an electrophoretic coating wastewater treatment device. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: the electrophoretic coating wastewater treatment equipment described in the present invention comprises a treatment box, a lifting frame is arranged on the outside of the treatment box near the top, a receiving cover is fixedly connected to the outside of the frame, a mixing discharge pipe is arranged in the middle of the treatment box, an air flotation pipe is arranged inside the mixing discharge pipe, a plurality of releasers are installed on the outside of the air flotation pipe, a plurality of discharge holes are opened on the surface of the mixing discharge pipe, a sewage valve is installed on the bottom of the treatment box, and recovery tanks are opened on both sides of the treatment box; The wastewater mixed with flocculants is introduced into the mixed discharge pipe, and dissolved air water is injected into the flotation tube at the same time. Dissolved air water refers to air or gas dissolved in water, making the water supersaturated with high concentration of gas; the dissolved air water is released into the mixed discharge pipe through the releaser to contact with the wastewater. The released dissolved air water will quickly release a large number of tiny bubbles and combine with the particles in the wastewater, thereby transferring the particles in the wastewater upward, thereby separating the light particles in the wastewater, and the heavier impurities will sink to the bottom under the action of gravity, and the bottom particles will be discharged regularly through the sewage valve, and the clean water will be discharged outward through the recovery tank, thereby completing the wastewater treatment process; as the particles accumulate on the upper surface of the treatment box, since the mixed discharge pipe is set in the middle position of the treatment box, a large number of bubbles discharged from the discharge hole float upward from the middle of the treatment box, thereby forming waves that continuously push outward in the middle of the water surface, so that The particles transferred to the water surface will be concentrated at the edge of the treatment box. With the continuous injection of wastewater, excess water will be discharged from the periphery of the treatment box and recovered by the receiving cover, thereby continuously transferring the particle waste outward. After a period of time, the frame and the receiving cover can be controlled to move downward, so that the wastewater above can be quickly transferred outward to the receiving cover without support, so that the waste at the edge can be emptied in large quantities at one time; the frame can also be kept still and the waste can only be discharged under the action of water waves. Through this setting, the function of efficiently transferring and cleaning the waste on the water surface is realized, and the cleaning process includes slow discharge and regular large-scale cleaning, which can ensure that there are no cleaning dead corners. Moreover, since the flowing ripples of the water flow itself are used for cleaning, the energy consumption required for cleaning is reduced. At the same time, the overall structural design is simple and convenient, which reduces the failure rate of the cleaning structure, post-processing, maintenance and other steps.

[0008] Preferably, recovery boxes are fixedly connected to both sides of the treatment box, the recovery box is connected to the recovery tank, a clean water pipe is fixedly connected to the bottom of the recovery box, two dissolved air tanks are arranged on the outside of the treatment box, the clean water pipe is connected to the dissolved air tank through a transmission pipe, the flotation pipe is connected to the dissolved air tank, a filter valve is installed at the end of the recovery box, so that the clean water entering the recovery box can be filtered for the last time, and the recovery tank is inclined, and the filtered particulate matter will eventually move along the recovery tank to the bottom of the treatment box, and at the same time, the opening size of the filter valve can be controlled, thereby controlling the water outlet speed of the clean water, and the dissolved air tank is used to dissolve compressed air into clean water; part of the recovered clean water is reused and injected into the dissolved air tank through the transmission pipe, and the dissolved air tank makes the clean water into dissolved air water and then passes it to the flotation pipe, so that the equipment can work without inputting external water source.

[0009] Preferably, the mixing discharge pipe is composed of a vertical pipe and a horizontal pipe, the flotation pipe has the same shape as the mixing discharge pipe, a pressure valve is fixedly connected to the top of the flotation pipe, and the pressure valve is located on the outside of the top of the mixing discharge pipe. The arrangement of the mixing discharge pipe allows the mixed water discharged from the discharge hole to be injected into the treatment box more evenly, and the pressure valve reduces the pressure of part of the dissolved water and discharges it upward in a concentrated manner, thereby generating a large number of bubbles in the middle of the treatment box, thereby ensuring that ripples are generated on the water surface above to push the waste outward.

[0010] Preferably, the top surface of the receiving cover is concave, and recovery pipes are fixedly connected to the top of both sides of the receiving cover. The ends of the recovery pipes are made of elastic material. The structure of the receiving cover can well catch the wastewater overflowing from around the treatment box and the waste carried in the wastewater. At the same time, the wastewater flows along the receiving cover and is finally discharged outward from the recovery pipe. During the lifting and lowering process of the frame and the receiving cover, the elastic material at the end of the recovery pipe can be deformed, which facilitates the stable connection of the recovery pipe with the external pipeline.

[0011] Preferably, two hydraulic rods arranged in parallel are provided under one side of the receiving cover, and a telescopic rod is provided under the other side of the receiving cover. The top of the telescopic rod is fixedly connected to the bottom of the receiving cover, and the bottom of the telescopic rod is fixedly connected to the outer side of the processing box. The receiving cover and the surrounding frame are lifted and lowered by controlling the extension and retraction of the hydraulic rod, and the telescopic rod is provided to ensure the lifting balance of the receiving cover.

[0012] Preferably, two groups of baffles are provided inside the treatment box, and the two groups of baffles are respectively located on both sides of the mixing discharge pipe, each group includes a plurality of baffles arranged at an inclination, and the plurality of baffles in each group are arranged in parallel. When the wastewater and bubbles are discharged from the mixing discharge pipe, some of them will move to both sides. After contacting the inclined baffles, the heavier particles in the wastewater will move downward along the baffles, and the lighter particles will move upward with the water flow and finally float to the water surface. When the large mass particles originally washed up by the water flow and bubbles fall in the middle, they will also move downward along the surface of the baffles and finally concentrate at the bottom of the treatment box. At the same time, the baffles will also block the water flow from moving directly to the recovery tank, thereby reducing the particle content of the clean water in the recovery tank.

[0013] Preferably, a supply box is fixedly connected to the outside of the treatment box, and the supply box is connected to the mixed discharge pipe. A raw material pipe is arranged on the outside of the supply box, and the raw material pipe is connected to the hydraulic rod. The hydraulic rod and the supply pipe are connected through a connecting pipe. The hydraulic rod can use traditional hydraulic equipment, or the waste water in the raw material pipe can be passed into the bottom of the outer cylinder of the hydraulic rod, thereby lifting the inner rod of the hydraulic rod upward. Since the bottom area of ​​the hydraulic rod is large, the lifting force is increased several times, so it does not require much water pressure to lift the receiving cover upward. When the hydraulic rod needs to be shortened, the connecting pipe is opened; the solenoid valve can be used for control; the waste water in the hydraulic rod is discharged into the supply box, and under the gravity pressure of the receiving cover, the receiving cover sinks quickly, and the waste water in the supply box is still injected into the mixed discharge pipe at a predetermined speed. Through this arrangement, the water pressure of the waste water is utilized, and the receiving cover can be raised and lowered regularly.

[0014] Preferably, the tops of the hydraulic rod and the telescopic rod are fixedly connected with a support platform, the top of the support platform is adapted to the bottom shape of the receiving cover, and a plurality of blocking plates 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 lift the receiving cover, and the blocking plates are used to reduce waste water splashing out of the top surface of the receiving cover.

[0015] Preferably, the baffle is provided with a plurality of longitudinal vertical grooves on one side facing the mixing discharge pipe, and the plurality of vertical grooves are arranged in parallel. When wastewater enters the vertical grooves, 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.

[0016] Preferably, a plurality of transverse grooves are provided on the side of the baffle away from the mixing discharge pipe, the output end of the dissolved air tank is connected to the baffle through a supply pipe, a plurality of connecting holes are provided in the transverse groove, the dissolved air water portion of the dissolved air tank is directly fed into the connecting holes of the baffle through the supply pipe, the dissolved air water discharged from the connecting holes is quickly decompressed to release bubbles, and the particles passing through the adjacent baffles are subjected to secondary attachment, so that the particles in the wastewater can increase their buoyancy again, thereby transferring upward, further ensuring the treatment effect of the equipment.

[0017] The beneficial effects of the present invention are as follows: 1. The electrophoretic coating wastewater treatment equipment described in the present invention passes the wastewater mixed with flocculant into the mixing discharge pipe, and at the same time injects dissolved air into the flotation tube. Dissolved air water refers to air or gas dissolved in water, so that the water becomes a supersaturated state containing high-concentration gas; the dissolved air water is released into the mixing discharge pipe through the releaser to contact the wastewater, and the released dissolved air water will quickly release a large number of tiny bubbles and combine with particles in the wastewater, thereby transferring the particles in the wastewater upward, thereby separating the light particles in the wastewater, while the heavier impurities will sink to the bottom under the action of gravity, and the bottom particles will be discharged regularly through the sewage valve, and the clean water will be discharged outward through the recovery tank, thereby completing the wastewater treatment process; as the particles accumulate on the upper surface of the treatment box, since the mixing discharge pipe is set in the middle position of the treatment box, a large number of bubbles discharged from the discharge hole float upward from the middle of the treatment box, thereby forming a continuous The waves push outward, so that the particles transferred to the water surface will be concentrated at the edge of the treatment box. With the continuous injection of wastewater, excess water will be discharged outward from the periphery of the treatment box and recovered by the receiving cover, thereby continuously transferring the particle waste outward, and after a period of time, the frame and the receiving cover can be controlled to move downward, so that the wastewater above has no support and can be quickly transferred outward to the receiving cover, so that the waste at the edge can be emptied in large quantities at one time; the frame can also be kept still, and the waste is only discharged under the action of water waves. Through this arrangement, the function of efficiently transferring and cleaning the waste on the water surface is realized, and the cleaning process includes slow discharge and regular large-scale cleaning, which can ensure that there is no cleaning dead corner, and because the flow ripples of the water flow itself are used for cleaning, the energy consumption required for cleaning is reduced, and the overall structural design is simple and convenient, which reduces the failure rate of the cleaning structure, post-processing, maintenance and other steps.

[0018] 2 In the electrophoretic coating wastewater treatment equipment described in the present invention, a filter valve is installed at the end of the recovery box, so that the clean water entering the recovery box can be filtered for the last time, and the recovery tank is inclined, and the filtered particulate matter will eventually move along the recovery tank to the bottom of the treatment box. At the same time, the opening size of the filter valve can be controlled to control the water outlet speed of the clean water. The air dissolving tank is used to dissolve compressed air into the clean water; part of the recovered clean water is reused and injected into the air dissolving tank through the transmission pipe. The air dissolving tank makes the clean water into dissolved air water and then passes it to the flotation tube, so that the equipment can work without inputting external water source. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 is a first perspective stereogram of the present invention; Figure 2 is a second viewing angle stereogram of the present invention; Figure 3 is a three-dimensional diagram of the processing box and the baffle of the present invention; Figure 4 is a cross-sectional view of a processing box of the present invention; Figure 5 is a stereoscopic view of a mixing discharge pipe of the present invention; Figure 6 is a three-dimensional diagram of the hydraulic rod of the present invention; Figure 7 is a three-dimensional diagram of the surrounding frame and the receiving cover of the present invention; Figure 8 is a three-dimensional diagram of a baffle of the present invention; In the figure: 1. treatment 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; 11. dissolved gas tank; 12. telescopic rod; 13. transmission pipe; 14. mixed discharge pipe; 15. clean water pipe; 16. drain valve; 17. recovery tank; 18. discharge hole; 19. pressure valve; 20. flotation tube; 21. releaser; 23. connecting pipe; 24. blocking plate; 25. vertical slot; 26. horizontal slot. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0022] like Figures 1 to 8 As shown, an electrophoretic coating wastewater treatment device according to an embodiment of the present invention comprises a treatment box 1, a lifting and lowering enclosure frame 2 is arranged on the outside of the treatment box 1 near the top, a receiving cover 3 is fixedly connected to the outside of the enclosure frame 2, a mixing discharge pipe 14 is arranged in the middle of the treatment box 1, an air flotation pipe 20 is arranged inside the mixing discharge pipe 14, a plurality of releasers 21 are installed on the outside of the air flotation pipe 20, a plurality of discharge holes 18 are opened on the surface of the mixing discharge pipe 14, a sewage valve 16 is installed on the bottom of the treatment box 1, and recovery tanks 17 are opened on both sides of the treatment box 1; The wastewater mixed with flocculants is introduced into the mixing discharge pipe 14, and the dissolved air water is injected into the flotation tube 20 at the same time. The dissolved air water refers to air or gas dissolved in water, so that the water becomes a supersaturated state containing a high concentration of gas; the dissolved air water is released into the mixing discharge pipe 14 through the releaser 21 to contact with the wastewater. The released dissolved air water will quickly release a large number of tiny bubbles and combine with the particles in the wastewater, thereby transferring the particles in the wastewater upward, thereby separating the light particles in the wastewater, and the heavier impurities will sink to the bottom under the action of gravity, and the bottom particles will be discharged regularly through the sewage valve 16, and the clean water will be discharged outward through the recovery tank 17, thereby completing the wastewater treatment process; as the particles accumulate on the upper surface of the treatment box 1, since the mixing discharge pipe 14 is set in the middle position of the treatment box 1, a large number of bubbles discharged from the discharge hole 18 float upward from the middle of the treatment box 1, thereby forming a continuous outward push in the middle of the water surface. The waves of the water waves will cause the particles transferred to the water surface to be concentrated at the edge of the treatment box 1. As the wastewater is continuously injected, the excess water will be discharged from the periphery of the treatment box 1 and recovered by the receiving cover 3, thereby continuously transferring the particle waste outwards. After a period of time, the frame 2 and the receiving cover 3 can be controlled to move downwards, so that the wastewater above can be quickly transferred outwards to the receiving cover 3 without support, so that the waste at the edge can be emptied in large quantities at one time; the frame 2 can also be kept stationary, and the waste can only be discharged under the action of the water waves. Through this arrangement, the function of efficiently transferring and cleaning the waste on the water surface is realized, and the cleaning process includes slow discharge and regular large-scale cleaning, which can ensure that there is no cleaning dead corner. Moreover, since the flowing ripples of the water flow itself are used for cleaning, the energy consumption required for cleaning is reduced. At the same time, the overall structural design is simple and convenient, which reduces the failure rate of the cleaning structure, post-processing, maintenance and other steps.

[0023] Recovery boxes 8 are fixedly connected to both sides of the treatment box 1, and the recovery boxes 8 are connected to the recovery tank 17. A clean water pipe 15 is fixedly connected to the bottom of the recovery box 8. Two dissolved air tanks 11 are arranged outside the treatment box 1. The clean water pipe 15 is connected to the dissolved air tank 11 through a transmission pipe 13, and the air flotation pipe 20 is connected to the dissolved air tank 11. During operation, a filter valve is installed at the end of the recovery box 8, so that the clean water entering the recovery box 8 can be filtered for the last time, and the recovery tank 17 is set at an angle, and the filtered particulate matter will eventually move along the recovery tank 17 to the bottom of the treatment box 1. At the same time, the opening size of the filter valve can be controlled to control the water outlet speed of the clean water. The air dissolving tank 11 is used to dissolve compressed air into the clean water; part of the recovered clean water is reused and injected into the air dissolving tank 11 through the transmission pipe 13. The air dissolving tank 11 makes the clean water into dissolved air water and then passes it to the flotation tube 20, so that the equipment can work without inputting external water source.

[0024] The mixing discharge pipe 14 is composed 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 fixedly connected to the top of the air flotation pipe 20. The pressure valve 19 is located outside the top of the mixing discharge pipe 14. During operation, the setting of the mixing discharge pipe 14 allows the mixed water discharged from the discharge hole 18 to be injected into the treatment box 1 more evenly, and the pressure valve 19 reduces the pressure of part of the dissolved water and discharges it upward in a concentrated manner, thereby generating a large number of bubbles in the middle of the treatment box 1, thereby ensuring that ripples are generated on the water surface above to push the waste outward.

[0025] The top surface of the receiving cover 3 is concave, and recovery pipes 4 are fixedly connected to the top of both sides of the receiving cover 3, and the ends of the recovery pipes 4 are made of elastic material; During operation, the structure of the receiving cover 3 can well catch the wastewater overflowing from the surrounding of the treatment box 1 and the waste carried in the wastewater. At the same time, the wastewater flows along the receiving cover 3 and is finally discharged outward from the recovery pipe 4. During the lifting process of the frame 2 and the receiving cover 3, the elastic material at the end of the recovery pipe 4 can be deformed, which facilitates the stable connection of the recovery pipe 4 with the external pipeline.

[0026] Two hydraulic rods 5 are arranged in parallel at the bottom of one side of the receiving cover 3, and a telescopic rod 12 is arranged at the bottom of the other side of the receiving cover 3. The top of the telescopic rod 12 is fixedly connected to the bottom of the receiving cover 3, and the bottom of the telescopic rod 12 is fixedly connected to the outer side of the processing box 1. During operation, the receiving cover 3 and the surrounding frame 2 are lifted or lowered by controlling the extension and retraction of the hydraulic rod 5 , and the telescopic rod 12 is provided to ensure the lifting balance of the receiving cover 3 .

[0027] Two groups of baffles 10 are arranged inside the processing box 1. The two groups of baffles 10 are respectively located on both sides of the mixing discharge pipe 14. Each group includes a plurality of baffles 10 arranged in an inclined manner, and the plurality of baffles 10 in each group are arranged in parallel. During operation, after the wastewater and bubbles are discharged from the mixing discharge pipe 14, some of them will move to both sides. After contacting the inclined baffle 10, the heavier particles in the wastewater will move downward along the baffle 10, and the lighter particles will move upward with the water flow and finally float to the water surface. When the large mass particles originally washed up by the water flow and bubbles fall in the middle, they will also move downward along the surface of the baffle 10 and finally gather at the bottom of the treatment box 1. At the same time, the baffle 10 will also block the water flow from moving directly to the position of the recovery tank 17, thereby reducing the particle content of the clean water in the recovery tank 17.

[0028] A supply box 6 is fixedly connected to the outside of the processing box 1, and the supply box 6 is connected to the mixed discharge pipe 14. A raw material pipe 7 is arranged on the outside of the supply box 6, and the raw material pipe 7 is connected to the hydraulic rod 5. The hydraulic rod 5 is connected to the supply pipe 9 through a connecting pipe 23. During operation, the hydraulic rod 5 can use traditional hydraulic equipment, or the waste water from the raw material pipe 7 can be passed into the bottom of the outer tube of the hydraulic rod 5, thereby lifting the inner rod of the hydraulic rod 5 upward. Since the bottom area of ​​the hydraulic rod 5 is large, the lifting force is increased several times, so it does not require much water pressure to lift the receiving cover 3 upward. When the hydraulic rod 5 needs to be shortened, the connecting pipe 23 is opened; the solenoid valve can be used for control; the waste water in the hydraulic rod 5 is discharged into the supply box 6, and under the downward pressure of the gravity of the receiving cover 3, the receiving cover 3 sinks quickly, and the waste water in the supply box 6 is still injected into the mixed discharge pipe 14 at a predetermined speed. Through this arrangement, the water pressure of the waste water is utilized, and the receiving cover 3 can be raised and lowered regularly.

[0029] The tops of the hydraulic rod 5 and the telescopic rod 12 are both fixedly connected with a support platform, the top of the support platform is adapted to the shape of the bottom of the receiving cover 3, and a plurality of blocking sheets 24 are fixedly connected to the outer side of the top surface of the receiving cover 3; During operation, the support platform is used to ensure that the hydraulic rod 5 and the telescopic rod 12 can stably lift the receiving cover 3 , and the blocking sheet 24 is used to reduce waste water splashing out from the top surface of the receiving cover 3 .

[0030] The baffle plate 10 is provided with a plurality of longitudinal vertical grooves 25 on one side facing the mixing discharge pipe 14, and the plurality of vertical grooves 25 are arranged in parallel; During operation, the wastewater entering the vertical trough 25 will have its force on the wastewater reduced, so that particles in the wastewater can float up and sink according to their own gravity.

[0031] The baffle plate 10 is provided with a plurality of transverse grooves 26 on one side away from the mixing discharge pipe 14. The output end of the gas dissolving tank 11 is connected to the baffle plate 10 via the supply pipe 9. The transverse grooves 26 are provided with a plurality of communication holes. During operation, the dissolved air water in the dissolved air tank 11 is directly fed into the connecting hole of the baffle 10 through the supply pipe 9. The dissolved air water discharged from the connecting hole is quickly decompressed to release bubbles, and the particles passing through the adjacent baffle 10 are attached for the second time, so that the particles in the wastewater can increase their buoyancy again, thereby transferring upward, further ensuring the treatment effect of the equipment.

[0032] During operation, wastewater mixed with flocculants is introduced into the mixing discharge pipe 14, and dissolved air water is injected into the flotation pipe 20. Dissolved air water refers to air or gas dissolved in water, making the water supersaturated with high-concentration gas; dissolved air water is released into the mixing discharge pipe 14 through the releaser 21 to contact with the wastewater, and the released dissolved air water will quickly release a large number of tiny bubbles and combine with the particles in the wastewater, thereby transferring the particles in the wastewater upward, thereby separating the light particles in the wastewater, while the heavier impurities will sink to the bottom under the action of gravity, and the bottom particles will be discharged regularly through the sewage valve 16, and the clean water will be discharged outward through the recovery tank 17, thereby completing the wastewater treatment process; as the particles accumulate on the upper surface of the treatment box 1, since the mixing discharge pipe 14 is set in the middle position of the treatment box 1, a large number of bubbles discharged from the discharge hole 18 float upward from the middle of the treatment box 1, thereby forming a continuous outward flow in the middle of the water surface. The waves pushed by the water will cause the particles transferred to the water surface to be concentrated at the edge of the treatment box 1. As the wastewater is continuously injected, the excess water will be discharged from the periphery of the treatment box 1 and recovered by the receiving cover 3, thereby continuously transferring the particle waste outward. After a period of time, the frame 2 and the receiving cover 3 can be controlled to move downward, so that the wastewater above has no support and can be quickly transferred outward to the receiving cover 3, so that the waste at the edge can be emptied in large quantities at one time; the frame 2 can also be kept stationary, and the waste can only be discharged under the action of water waves. Through this arrangement, the function of efficiently transferring and cleaning the waste on the water surface is realized, and the cleaning process includes slow discharge and regular large-scale cleaning, which can ensure that there is no cleaning dead corner, and because the flowing ripples of the water flow itself are used for cleaning, the energy consumption required for cleaning is reduced, and the overall structural design is simple and convenient, which reduces the failure rate of the cleaning structure, post-processing, maintenance and other steps; A filter valve is installed at the end of the recovery box 8, so that the clean water entering the recovery box 8 can be filtered for the last time, and the recovery tank 17 is set at an angle, and the filtered particles will eventually move along the recovery tank 17 to the bottom of the treatment box 1. At the same time, the opening size of the filter valve can be controlled to control the water outlet speed of the clean water. The air dissolving tank 11 is used to dissolve compressed air into the clean water; part of the recovered clean water is reused and injected into the air dissolving tank 11 through the transmission pipe 13. The air dissolving tank 11 makes the clean water into dissolved air water and then passes it to the air flotation tube 20, so that the equipment can work without inputting external water source; The arrangement of the mixing discharge pipe 14 allows the mixed water discharged from the discharge hole 18 to be injected into the treatment box 1 more evenly, and the pressure valve 19 discharges part of the dissolved water upward after reducing the pressure, thereby generating a large number of bubbles in the middle of the treatment box 1, thereby ensuring that ripples are generated on the water surface above to push the waste outward; The structure of the receiving cover 3 can well receive the wastewater overflowing from the surrounding of the treatment box 1 and the waste materials carried in the wastewater. At the same time, the wastewater flows along the receiving cover 3 and is finally discharged outward from the recovery pipe 4. During the lifting process of the surrounding frame 2 and the receiving cover 3, the elastic material at the end of the recovery pipe 4 can be deformed, which facilitates the stable connection of the recovery pipe 4 with the external pipeline. The receiving cover 3 and the surrounding frame 2 are lifted and lowered by telescoping the hydraulic rod 5, and the telescopic rod 12 is provided to ensure the lifting balance of the receiving cover 3; When the wastewater and air bubbles are discharged from the mixed discharge pipe 14, part of them will move to both sides. After contacting the inclined baffle 10, the heavier particles in the wastewater will move downward along the baffle 10, and the lighter particles will move upward with the water flow, and finally float to the water surface. If the large mass particles originally washed up by the water flow and air bubbles fall in the middle, they will also move downward along the surface of the baffle 10, and finally gather at the bottom of the treatment box 1. At the same time, the baffle 10 will also block the water flow from moving directly to the recovery tank 17, reducing the particle content of the clean water in the recovery tank 17. The hydraulic rod 5 can use conventional hydraulic equipment, or the waste water from the raw material pipe 7 can be passed into the bottom of the outer tube of the hydraulic rod 5, so as to push the inner rod of the hydraulic rod 5 upward. Since the bottom area of ​​the hydraulic rod 5 is large, the pushing force is increased several times, so it does not require much water pressure to push the receiving cover 3 upward. When the hydraulic rod 5 needs to be shortened, the connecting pipe 23 is opened; the electromagnetic valve can be used for control; the waste water in the hydraulic rod 5 is discharged into the supply box 6, and the receiving cover 3 sinks rapidly under the gravity pressure of the receiving cover 3, and the waste water in the supply box 6 is still injected into the mixed discharge pipe 14 at a predetermined speed. Through this arrangement, the water pressure of the waste water is utilized, and the receiving cover 3 can be raised and lowered regularly; The support platform is used to ensure that the hydraulic rod 5 and the telescopic rod 12 can stably lift the receiving cover 3, and the blocking sheet 24 is used to reduce the splashing of waste water from the top surface of the receiving cover 3; When the wastewater enters the vertical trough 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; The dissolved air water portion of the dissolved air tank 11 is directly fed into the connecting hole of the baffle 10 through the supply pipe 9. The dissolved air water discharged from the connecting hole is quickly decompressed to release bubbles, and the particles passing through the adjacent baffle 10 are attached for the second time, so that the particles in the wastewater can increase their buoyancy again, thereby transferring upward, further ensuring the treatment effect of the equipment.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An electrophoretic coating wastewater treatment equipment, characterized in that: It includes a processing box, a lifting frame is arranged on the outside of the processing box near the top, a receiving cover is fixedly connected to the outside of the frame, a mixing discharge pipe is arranged in the middle of the processing box, an air flotation pipe is arranged inside the mixing discharge pipe, a plurality of releasers are installed on the outside of the air flotation pipe, a plurality of discharge holes are provided on the surface of the mixing discharge pipe, a sewage valve is installed on the bottom of the processing box, and recovery grooves are provided on both sides of the processing box.

2. The electrophoretic coating wastewater treatment equipment according to claim 1, characterized in that: Recovery boxes are fixedly connected to both sides of the treatment box, and the recovery boxes are connected to the recovery tank. A clean water pipe is fixedly connected to the bottom of the recovery box. Two dissolved air tanks are arranged on the outside of the treatment box. The clean water pipe is connected to the dissolved air tank through a transmission pipe, and the air flotation pipe is connected to the dissolved air tank.

3. The electrophoretic coating wastewater treatment equipment according to claim 2 is characterized in that: The mixing discharge pipe is composed 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 fixedly connected to the top of the air flotation pipe. The pressure valve is located outside the top of the mixing discharge pipe.

4. The electrophoretic coating wastewater treatment equipment according to claim 3 is characterized in that: The top surface of the receiving cover is concave, and recovery pipes are fixedly connected to the top of both sides of the receiving cover, and the ends of the recovery pipes are made of elastic material.

5. The electrophoretic coating wastewater treatment equipment according to claim 4 is characterized in that: Two parallel hydraulic rods are arranged below one side of the receiving cover, and a telescopic rod is arranged below the other side of the receiving cover. The top of the telescopic rod is fixedly connected to the bottom of the receiving cover, and the bottom of the telescopic rod is fixedly connected to the outer side of the processing box.

6. The electrophoretic coating wastewater treatment equipment according to claim 5 is characterized by: Two groups of baffles are arranged inside the processing box. The two groups of baffles are respectively located on both sides of the mixing discharge pipe. Each group includes a plurality of baffles arranged in an inclined manner, and the plurality of baffles in each group are arranged in parallel.

7. The electrophoretic coating wastewater treatment equipment according to claim 6 is characterized by: A supply box is fixedly connected to the outside of the processing box, and the supply box is connected to the mixed discharge pipe. A raw material pipe is arranged on the outside of the supply box, and the raw material pipe is connected to the hydraulic rod. The hydraulic rod and the supply pipe are connected through a connecting pipe.

8. The electrophoretic coating wastewater treatment equipment according to claim 7 is characterized by: The tops of the hydraulic rod and the telescopic rod are both fixedly connected with a support platform, the top of the support platform is adapted to the shape of the bottom of the receiving cover, and a plurality of blocking sheets are fixedly connected to the outer side of the top surface of the receiving cover.

9. The electrophoretic coating wastewater treatment equipment according to claim 8, characterized in that: A plurality of longitudinal vertical grooves are formed on one side of the baffle plate facing the mixing discharge pipe, and the plurality of vertical grooves are arranged in parallel.

10. The electrophoretic coating wastewater treatment equipment according to claim 9, characterized in that: A plurality of transverse grooves are provided on one side of the baffle away from the mixing discharge pipe, the output end of the dissolved gas tank is connected with the baffle through a supply pipe, and a plurality of communication holes are provided in the transverse grooves.

Images