Multistage filtration deep purification treatment device for coating wastewater

Abstract

The utility model relates to the technical field of coating wastewater purification treatment, in particular to a coating wastewater multi-stage filtration deep purification treatment device which comprises a mixing bin, the mixing bin is composed of a vertical section and an inclined section, first filter plates are evenly distributed and fixedly connected to the outer surface of the transmission belt, the rotation track of the outer side edge of each first filter plate intersects with the inner wall of the inclined section, an opening is formed in the side edge of the vertical section, the opening is connected with the biochemical bin through an inclined corridor, and a second filter plate is installed in the opening in the side edge of the vertical section. A filter assembly is arranged in the biochemical bin, nozzles are uniformly distributed and mounted on a grading branch pipe, and a first filter plate can push caked impurities gathered at the joint of a vertical section and an inclined section to a sewage draining exit in the moving process, so that the effect of multi-stage filtration of the coating wastewater is achieved in a matched manner; compared with a traditional coating wastewater treatment device, the coating wastewater treatment device is better in coating water treatment effect, and the situation that impurities generated in the coating water treatment process are accumulated in the device to affect normal use of the device is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of purification treatment of painting wastewater, in particular to a multi-stage filtration and deep purification treatment device for painting wastewater. Background Technique

[0002] In the surface manufacturing process, in order to improve the aesthetic effect of the workpiece surface and enhance its corrosion and rust prevention performance, the surface of the workpiece will be painted after manufacturing. By spraying a film on the workpiece surface, its service life and aesthetics can be improved. However, a large amount of wastewater will be generated during the painting process. Due to the complex components and high concentration in the wastewater, direct discharge will cause great damage to the ecological environment. Therefore, it is necessary to purify the painting wastewater so that the wastewater meets the discharge standards and ensures that the wastewater discharge will not damage the ecological environment.

[0003] A Chinese patent with the publication number of CN 208632182 U discloses a painting wastewater treatment device, including a regulating chamber and a support rod. A grille is arranged inside the regulating chamber. The regulating chamber is connected to a coagulation reaction chamber through a pipeline. One side of the inner wall of the coagulation reaction chamber is fixed with a base by bolts. A servo motor is installed on one side of the base by screws. The output end of the servo motor is connected to a rotating rod through a coupling. A stirring rod is sleeved outside the rotating rod. A cam is sleeved outside the rotating rod. A fixed block is welded on the top of the coagulation reaction chamber. A gravity rod is arranged inside the fixed block. One side of the gravity rod is fixed with a connecting rod by screws. One side of the connecting rod is fixed with a lifting rod by bolts. Through the settings of structures such as a cam, a spray head, a linkage rod, a baffle, a push plate, a fixed block, a gravity rod, a roller rod, etc., when the servo motor rotates, the medicine storage tank automatically feeds the inside of the reaction chamber, saving a large amount of human resources. The device can operate automatically without manual supervision.

[0004] Since the existing painting wastewater treatment device cannot remove the impurities filtered by the grille, the impurities brushed by the brush will still remain in the regulating chamber. After long-term use, the impurities will accumulate in the regulating chamber, affecting normal use. Moreover, the filtering effect of the painting wastewater is poor, and the heavy metal ions contained in the painting wastewater cannot be effectively removed. Therefore, a multi-stage filtration and deep purification treatment device for painting wastewater is proposed to solve the above problems. Content of the Utility Model

[0005] In order to make up for the deficiencies of the prior art and solve the problems existing in the prior art, the utility model proposes a multi-stage filtration and deep purification treatment device for painting wastewater.

[0006] The technical solution adopted by the present utility model to solve its technical problems is as follows: A multi-stage filtration and deep purification treatment device for painting wastewater of the present utility model includes a mixing bin; the mixing bin is composed of a vertical section and an inclined section. The upper part of the vertical section is provided with a filling port with an open top, and the end of the inclined section is provided with a sewage discharge port with an open end.

[0007] A first rotating shaft is rotatably installed at the center of the corner between the inclined section and the vertical section. A second rotating shaft is rotatably supported by a support plate at the opening of the sewage discharge port. A transmission belt for transmission is arranged between the first rotating shaft and the second rotating shaft. The outer surface of the transmission belt is evenly distributed and fixedly connected with first filter plates, and the rotation trajectory of the outer side edge of the first filter plates intersects with the inner wall of the inclined section.

[0008] An opening is provided on the side of the vertical section. The opening is connected to a biochemical bin through an inclined corridor, and the inclined corridor is arranged to slope downwards. A second filter plate is installed in the opening on the side of the vertical section.

[0009] A filtering component is arranged in the biochemical bin. A gas supply pipe is horizontally fixedly connected to the outer wall of the biochemical bin. The gas supply pipe is evenly distributed and installed with grading branch pipes, and the ends of the grading branch pipes horizontally penetrate into the biochemical bin and are located below the filtering component. The grading branch pipes are evenly distributed and installed with spray nozzles, which cooperate to achieve the function of filtering and discharging impurities in the painting wastewater and improve the multi-stage filtering effect of the painting water.

[0010] Preferably, a drain pipe is fixedly connected to the bottom of the outer wall of the biochemical bin, and the installation position of the drain pipe is below the filtering component. A drainage pump is installed on the drain pipe, which cooperates to achieve the function of discharging the treated painting water.

[0011] Preferably, an anti-overflow elbow pipe is fixedly connected to the end of the gas supply pipe. The anti-overflow elbow pipe is arranged in an inverted U shape. An air injection pump is installed on the anti-overflow elbow pipe. The intake end of the air injection pump is connected to a high-pressure gas storage tank filled with ozone through a pipeline, which cooperates to achieve the function of ozone aeration to improve the water quality and enhance the treatment effect of the painting water.

[0012] Preferably, the stirring component includes a second motor, a first stirring rod and a second stirring rod. The first stirring rod and the second stirring rod are symmetrically installed in the vertical section and are both located above the rotation trajectory of the first filter plates, which cooperate to achieve the function of mixing the painting water and the coagulant, so as to remove the particulate impurities in the painting water by agglomeration.

[0013] Preferably, a first gear and a second gear are respectively fixedly connected to the rotating shafts of the first stirring rod and the second stirring rod, and the first gear and the second gear are meshed with each other. The second motor is fixed to the outer wall of the vertical section through a fixing frame, and the rotating shaft of the second stirring rod is fixedly connected to the output end of the second motor, which cooperates to achieve the function of driving the stirring component.

[0014] Preferably, the height of the sewage outlet is higher than that of the filling port, a stirring assembly is provided in the filling port, a No. 1 motor is installed on the outer wall of the support plate through a fixing part, the output shaft of the No. 1 motor passes through the support plate and is fixedly connected to the rotating shaft of the No. 2 rotating shaft, and the cooperation achieves the effect of transmission belt drive so as to discharge the agglomerated impurities.

[0015] Preferably, the filter assembly includes an activated carbon filter layer and an ion exchange resin filter layer, and the activated carbon filter layer and the ion exchange resin filter layer are horizontally sealed and installed in the biochemical bin, and supporting legs are installed under the mixing bin, so as to achieve the effect of multi-stage filtration and enhance the water quality improvement effect.

[0016] The utility model is beneficial in that:

[0017] 1. The utility model uses a coagulant to adsorb and agglomerate particulate impurities in the coating wastewater. During the movement, the No. 1 filter plate will push the agglomerated impurities gathered at the connection between the vertical section and the inclined section to the sewage outlet, thereby separating the agglomerated impurities from the coating wastewater.

[0018] 2. The utility model can adsorb organic matter, odor, pigment and some heavy metal ions in water under the action of activated carbon filter layer and ion exchange resin filter layer, exchange ions in water to soften water quality, control the operation of air injection pump, and blow ozone in ozone high-pressure gas storage tank into biochemical chamber through nozzles evenly distributed on graded branch pipes when the air injection pump is running, so as to aerate the coating wastewater in biochemical chamber to kill bacteria, viruses, algae and other microorganisms in water, decompose organic matter and remove odor, so as to deeply treat the water after filtration and impurity removal and improve water quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 is a schematic diagram of a first three-dimensional structure;

[0021] Figure 2 Provide a cutaway enlarged schematic diagram of the main structure of the mixing bin;

[0022] Figure 3 This is an enlarged schematic diagram of the cutaway main structure of the biochemical warehouse;

[0023] Figure 4 This is an enlarged schematic diagram of area A in the main structure diagram of the mixing bin.

[0024] In the figure: 1, mixing bin; 2, vertical section; 3, inclined section; 4, first rotating shaft; 5, second rotating shaft; 6, transmission belt; 7, first filter plate; 8, first stirring rod; 9, second stirring rod; 10, filling port; 11, sewage discharge port; 12, second filter plate; 13, biochemical bin; 14, inclined connecting corridor; 15, air supply pipe; 16, grading branch pipe; 17, spray nozzle; 18, anti-overflow elbow pipe; 19, air injection pump; 20, drain pipe; 21, drainage pump; 22, first motor; 23, first gear; 24, second gear; 25, second motor; 26, support leg; 27, support plate; 28, activated carbon filter layer; 29, ion exchange resin filter layer. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

[0026] Please refer to Figures 1-4 As shown, a multi-stage filtration and deep purification treatment device for painting wastewater includes a mixing bin 1; the mixing bin 1 is composed of a vertical section 2 and an inclined section 3. A filling port 10 is arranged at the upper opening of the vertical section 2, and a sewage discharge port 11 is arranged at the end opening of the inclined section 3;

[0027] A first rotating shaft 4 is rotatably installed at the corner center of the inclined section 3 and the vertical section 2. A second rotating shaft 5 is rotatably installed by being supported by a support plate 27 at the opening of the sewage discharge port 11. A transmission belt 6 for transmission is arranged between the first rotating shaft 4 and the second rotating shaft 5. First filter plates 7 are uniformly distributed and fixedly connected to the outer surface of the transmission belt 6, and the rotation trajectory of the outer side edge of the first filter plate 7 intersects with the inner wall of the inclined section 3;

[0028] An opening is arranged on the side of the vertical section 2, and a biochemical bin 13 is connected through an inclined connecting corridor 14 at the opening. The inclined connecting corridor 14 is arranged to slope downwards, and a second filter plate 12 is installed in the opening on the side of the vertical section 2;

[0029] A filtering component is arranged in the biochemical bin 13. An air supply pipe 15 is horizontally fixedly connected to the outer wall of the biochemical bin 13. Grading branch pipes 16 are uniformly distributed and installed on the air supply pipe 15. The ends of the grading branch pipes 16 horizontally penetrate into the biochemical bin 13 and are located below the filtering component. Spray nozzles 17 are uniformly distributed and installed on the grading branch pipes 16.

[0030] The bottom of the outer wall of the biochemical chamber 13 is fixedly connected with a drain pipe 20, and the installation position of the drain pipe 20 is below the filtration component. A drain pump 21 is installed on the drain pipe 20.

[0031] The end of the air supply pipe 15 is fixedly connected with an anti-overflow elbow pipe 18. The anti-overflow elbow pipe 18 is arranged in an inverted U shape. An air injection pump 19 is installed on the anti-overflow elbow pipe 18. The air inlet end of the air injection pump 19 is connected to a high-pressure gas storage tank filled with ozone through a pipeline.

[0032] The stirring component includes a second motor 25, a first stirring rod 8 and a second stirring rod 9. The first stirring rod 8 and the second stirring rod 9 are symmetrically installed in the vertical section 2 and are both above the rotation trajectory of the first filter plate 7.

[0033] One-way gears 23 and second gears 24 are respectively fixedly connected to the rotating shafts of the first stirring rod 8 and the second stirring rod 9, and the first gear 23 and the second gear 24 mesh with each other. The second motor 25 is fixed to the outer wall of the vertical section 2 through a fixing frame, and the rotating shaft of the second stirring rod 9 is fixedly connected to the output end of the second motor 25.

[0034] The height of the sewage outlet 11 is higher than that of the filling port 10. A stirring component is arranged in the filling port 10. A first motor 22 is installed on the outer side wall of the support plate 27 through a fixing member. The output shaft of the first motor 22 penetrates through the support plate 27 and is fixedly connected to the rotating shaft of the second rotating shaft 5.

[0035] The filtration component includes an activated carbon filtration layer 28 and an ion exchange resin filtration layer 29. The activated carbon filtration layer 28 and the ion exchange resin filtration layer 29 are horizontally and hermetically installed in the biochemical chamber 13. Support legs 26 for support are installed below the mixing chamber 1.

[0036] During operation, since the existing coating wastewater treatment device cannot remove the impurities filtered by the grille, the impurities brushed by the brush will still remain in the regulation chamber. After long-term use, the impurities will accumulate in the regulation chamber, affecting normal use. In this solution, the coating wastewater is poured into the mixing chamber 1 from the filling port 10, and then a coagulant is put into the mixing chamber 1. The second motor 25 is controlled to operate. When the second motor 25 operates, it drives the second stirring rod 9 to rotate. When the second stirring rod 9 rotates, it drives the first stirring rod 8 to rotate through the first gear 23 and the second gear 24. Then, the coating wastewater with the coagulant added is stirred by the first stirring rod 8 and the second stirring rod 9 so that the coating wastewater reacts with the coagulant. The coagulant adsorbs and agglomerates the particulate impurities in the coating wastewater. At the same time, the first motor 22 is controlled to operate. When the first motor 22 operates, it drives the second rotating shaft 5 to rotate. Then, through the second rotating shaft 5 and the first rotating shaft 4, the transmission belt 6 is driven to operate in the inclined section 3. When the transmission belt 6 operates, it drives the first filter plate 7 to move around the direction of the transmission belt 6. In cooperation with controlling the first filter plate 7 to move from the bottom of the inclined section 3 to the top of the inclined section 3, the first filter plate 7 also stirs the coating wastewater in the mixing chamber 1 during the movement to improve the mixing effect of the coating wastewater and the coagulant. And during the movement of the first filter plate 7, the agglomerated impurities accumulated at the connection of the vertical section 2 and the inclined section 3 are pushed towards the sewage outlet 11. During the pushing process, the first filter plate 7 filters the coating wastewater, separating the agglomerated impurities from the coating wastewater. The pushed agglomerated impurities are discharged from the sewage outlet 11. When the height of the coating wastewater in the mixing chamber 1 reaches the second filter plate 12, the coating wastewater in the mixing chamber 1 overflows into the biochemical chamber 13 through the inclined connecting corridor 14. And under the filtration of the second filter plate 12, it prevents the particulate impurities in the mixing chamber 1 from following the overflow into the biochemical chamber 13. When the wastewater after filtration and impurity removal enters the biochemical chamber 13, it is filtered again by the activated carbon filter layer 28 and the ion exchange resin filter layer 29. Under the action of the activated carbon filter layer 28 and the ion exchange resin filter layer 29, the organic matters, odors, pigments and some heavy metal ions in the water are adsorbed, and the ions in the water are exchanged to soften the water quality. The air injection pump 19 is controlled to operate. When the air injection pump 19 operates, the ozone in the ozone high-pressure gas storage tank is pumped into the grading branch pipe 16 through the anti-overflow elbow 18 and the air delivery pipe 15, and is blown into the biochemical chamber 13 through the nozzles 17 evenly distributed on the grading branch pipe 16, thereby aerating the coating wastewater located in the biochemical chamber 13 to kill microorganisms such as bacteria, viruses and algae in the water, decompose organic matters and remove odors, so as to carry out in-depth treatment on the water after filtration and impurity removal and improve the water quality. By controlling the drainage pump 21 to operate, the treated water can be pumped out through the drain pipe 20 when the drainage pump 21 operates, cooperating to achieve the function of multi-stage filtration of the coating wastewater. Compared with the traditional coating wastewater treatment device, the coating water treatment effect is better, and it effectively avoids the accumulation of impurities generated during the coating water treatment process in the device, affecting the normal use of the device.

[0037] Working principle: The painting wastewater is poured into the mixing chamber 1 from the filling port 10, and then a coagulant is put into the mixing chamber 1. The second motor 25 is controlled to operate. When the second motor 25 operates, it drives the second stirring rod 9 to rotate. When the second stirring rod 9 rotates, it drives the first stirring rod 8 to rotate through the first gear 23 and the second gear 24. Then, the painting wastewater with the coagulant added is stirred by the first stirring rod 8 and the second stirring rod 9, so that the painting wastewater reacts with the coagulant. The coagulant adsorbs and agglomerates the particulate impurities in the painting wastewater. At the same time, the first motor 22 is controlled to operate. When the first motor 22 operates, it drives the second rotating shaft 5 to rotate. Then, through the second rotating shaft 5 and the first rotating shaft 4, the conveyor belt 6 is driven to operate in the inclined section 3. When the conveyor belt 6 operates, it drives the first filter plate 7 to move around the conveyor belt 6. In cooperation with the control, the first filter plate 7 moves from the bottom of the inclined section 3 to the top of the inclined section 3. During the movement, the first filter plate 7 also stirs the painting wastewater in the mixing chamber 1 to improve the mixing effect of the painting wastewater and the coagulant. During the movement, the first filter plate 7 pushes the agglomerated impurities gathered at the connection of the vertical section 2 and the inclined section 3 towards the sewage outlet 11. During the pushing process, the first filter plate 7 filters the painting wastewater to separate the agglomerated impurities from the painting wastewater. The pushed agglomerated impurities are discharged from the sewage outlet 11. When the height of the painting wastewater in the mixing chamber 1 reaches the second filter plate 12, the painting wastewater in the mixing chamber 1 overflows into the biochemical chamber 13 through the inclined connecting corridor 14. And under the filtration of the second filter plate 12, the particulate impurities in the mixing chamber 1 are prevented from following the overflow into the biochemical chamber 13. When the wastewater after filtration and impurity removal enters the biochemical chamber 13, it is filtered again by the activated carbon filter layer 28 and the ion exchange resin filter layer 29. Under the action of the activated carbon filter layer 28 and the ion exchange resin filter layer 29, the organic matters, odors, pigments and some heavy metal ions in the water are adsorbed, and the ions in the water are exchanged to soften the water quality. The air injection pump 19 is controlled to operate. When the air injection pump 19 operates, the ozone in the ozone high-pressure gas storage tank is pumped into the grading branch pipe 16 through the anti-overflow elbow 18 and the air delivery pipe 15, and is blown into the biochemical chamber 13 through the nozzles 17 evenly distributed on the grading branch pipe 16. Then, the painting wastewater in the biochemical chamber 13 is aerated to kill microorganisms such as bacteria, viruses and algae in the water, decompose the organic matters and remove the odors, so as to perform deep treatment on the water after filtration and impurity removal, improve the water quality. By controlling the drainage pump 21 to operate, the treated water can be pumped out through the drain pipe 20 when the drainage pump 21 operates, and the multi-stage filtration of the painting wastewater is achieved. Compared with the traditional painting wastewater treatment device, the painting water treatment effect is better, and the accumulation of impurities generated during the painting water treatment process in the device is effectively avoided, which affects the normal use of the device.

[0038] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. A multi-stage filtration and deep purification treatment device for painting wastewater, characterized in that: It includes a mixing bin (1); the mixing bin (1) is composed of a vertical section (2) and an inclined section (3). The upper part of the vertical section (2) is provided with a filling port (10) in an open manner, and the end of the inclined section (3) is provided with a sewage discharge port (11) in an open manner; At the center of the corner between the inclined section (3) and the vertical section (2), a first rotating shaft (4) is rotatably installed. At the opening of the sewage discharge port (11), a second rotating shaft (5) is rotatably installed through support by a support plate (27). A transmission belt (6) for transmission is arranged between the first rotating shaft (4) and the second rotating shaft (5). A first filter plate (7) is fixedly connected to the outer surface of the transmission belt (6) in a uniformly distributed manner, and the rotation trajectory of the outer side of the first filter plate (7) intersects with the inner wall of the inclined section (3); An opening is provided on the side of the vertical section (2). A biochemical bin (13) is connected through an inclined corridor (14) at the opening, and the inclined corridor (14) is arranged in a downward inclined manner. A second filter plate (12) is installed in the opening on the side of the vertical section (2); A filtering component is arranged in the biochemical bin (13). A gas supply pipe (15) is horizontally and fixedly connected to the outer wall of the biochemical bin (13). Hierarchical branch pipes (16) are uniformly distributed and installed on the gas supply pipe (15), and the ends of the hierarchical branch pipes (16) horizontally penetrate through and are located in the biochemical bin (13) and are below the filtering component. Spray nozzles (17) are uniformly distributed and installed on the hierarchical branch pipes (16).

2. The multi-stage filtration and deep purification treatment device for painting wastewater according to claim 1, wherein: A drain pipe (20) is fixedly connected to the bottom of the outer wall of the biochemical bin (13), and the installation position of the drain pipe (20) is below the filtering component. A drainage pump (21) is installed on the drain pipe (20).

3. A multi-stage filtration and deep purification treatment device for painting wastewater according to claim 1, characterized in that: An anti-overflow elbow pipe (18) is fixedly connected to the end of the gas supply pipe (15). The anti-overflow elbow pipe (18) is arranged in an inverted U shape. An air injection pump (19) is installed on the anti-overflow elbow pipe (18), and the air inlet end of the air injection pump (19) is connected to a high-pressure gas storage tank filled with ozone through a pipeline.

4. A multi-stage filtration and deep purification treatment device for painting wastewater according to claim 1, characterized in that: The stirring component includes a second motor (25), a first stirring rod (8) and a second stirring rod (9). The first stirring rod (8) and the second stirring rod (9) are symmetrically installed in the vertical section (2) and are both above the rotation trajectory of the first filter plate (7).

5. A multi-stage filtration and deep purification treatment device for painting wastewater according to claim 4, characterized in that: A first gear (23) and a second gear (24) are respectively fixedly connected to the rotating shafts of the first stirring rod (8) and the second stirring rod (9), and the first gear (23) and the second gear (24) are meshed with each other. The second motor (25) is fixed to the outer wall of the vertical section (2) through a fixing frame, and the rotating shaft of the second stirring rod (9) is fixedly connected to the output end of the second motor (25).

6. The multi-stage filtration and advanced purification treatment device for painting wastewater according to claim 1, wherein: The height of the sewage discharge port (11) is higher than that of the filling port (10). A stirring component is arranged in the filling port (10). A first motor (22) is installed on the outer side wall of the support plate (27) through a fixing member, and the output shaft of the first motor (22) penetrates through the support plate (27) and is fixedly connected to the rotating shaft of the second rotating shaft (5).

7. A multi-stage filtration and deep purification treatment device for painting wastewater according to claim 1, characterized in that: The filtering component includes an activated carbon filtering layer (28) and an ion exchange resin filtering layer (29). The activated carbon filtering layer (28) and the ion exchange resin filtering layer (29) are horizontally and hermetically installed in the biochemical chamber (13). Legs (26) for support are installed under the mixing chamber (1).

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