Wastewater multi-stage treatment device based on ultraviolet light absorber production

Abstract

The invention discloses a wastewater multi-stage treatment device based on ultraviolet light absorber production, and belongs to the technical field of wastewater treatment.The wastewater multi-stage treatment device comprises a floating gas tank, the two sides of the floating gas tank are each fixedly connected with a pair of supporting rods, and the tops of one pair of supporting rods are fixedly connected with a first protective cover; and the tops of the other pair of supporting rods are fixedly connected with a second protective cover, and one side of the first protective cover is fixedly connected with a servo motor. The movable plate, the defoaming mechanism and the adjusting mechanism are arranged, the movable plate can drive the defoaming mechanism to move along the liquid level of sewage, the defoaming mechanism pushes floating foam on the surface of the sewage by blowing out airflow, a slag scraping plate is replaced by the airflow, floating foam residues are effectively reduced, and meanwhile the situation that the floating foam adheres to the slag scraping plate to cause secondary pollution is prevented; the adjusting mechanism can adjust the air flow in the defoaming mechanism, so that the air flow is gradually enhanced along with approaching the collecting tank, floating foam is ensured to be smoothly gathered into the tank, and the defoaming efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a multi-stage wastewater treatment device based on the production of ultraviolet absorbers. Background Art

[0002] Ultraviolet absorbers are a class of organic compounds that can absorb ultraviolet rays and convert them into heat energy or harmless radiation. They are widely used in plastics, coatings, cosmetics and other fields. They absorb ultraviolet light energy through a conjugated system and inhibit photoaging of materials. Their production wastewater contains benzene ring organic matter, formaldehyde, etc., which are highly toxic, highly chromatic, and poorly biodegradable. During treatment, they usually undergo pretreatment to remove suspended solids, and then use advanced oxidation to degrade difficult-to-degrade organic matter, combined with biochemical treatment to further remove COD. Flotation machines are a water treatment technology that uses bubbles to absorb flocs and separate them. In the treatment of ultraviolet absorber wastewater, coagulants and flocculants are added to aggregate pollutants into flocs. Microbubbles are generated through dissolved air release or mechanical aeration. The bubbles combine with the flocs and float to the liquid surface to form foam and scum, which are discharged through a scraping device. This can effectively remove colloids and fine suspended solids in the wastewater and improve the efficiency of subsequent treatment.

[0003] The existing multi-stage wastewater treatment device based on the production of ultraviolet absorbers still has the following shortcomings: 1. Existing multi-stage wastewater treatment devices based on ultraviolet absorber production have poor foam removal performance. Existing scraping devices use scraping plates to scrape away foam. However, there is a gap between the bottom of most scraping plates and the surface of the sewage, resulting in incomplete scraping of foam on the sewage surface. Because the foam contains sticky organic matter, the scraping plates will adhere to the foam, causing the scraping plates to bring the foam back into the pool the next time they scrape, causing secondary pollution. 2. The foam scraped off by existing multi-stage wastewater treatment devices based on ultraviolet absorber production tends to adhere to the collection tank. Although the bottom of the existing collection tank is tilted to guide the foam to slide down, some of the foam still adheres to the tank walls and bottom, forming a stubborn scale layer and reducing the flow cross-sectional area in the tank. 3. The existing multi-stage wastewater treatment device based on the production of ultraviolet absorbers cannot adapt to liquid level fluctuations. When the liquid level rises, the bottom of the scraper will contact the sewage, causing the sewage to be disturbed by the scraper, causing the foam to break. When the liquid level drops, the distance between the bottom of the scraper and the sewage liquid surface will increase, and the foam will easily leak through the gap, resulting in incomplete scraping. Summary of the Invention

[0004] In order to overcome the above-mentioned defects, the present invention provides a multi-stage wastewater treatment device based on the production of ultraviolet absorbers, which solves the problems existing in the existing multi-stage wastewater treatment devices based on the production of ultraviolet absorbers.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multi-stage wastewater treatment device based on the production of ultraviolet absorbers, comprising a flotation tank, wherein a pair of support rods are fixedly connected to both sides of the flotation tank, wherein the top of one pair of the support rods is fixedly connected to a protective cover 1, wherein the top of the other pair of the support rods is fixedly connected to a protective cover 2, one side of the protective cover 1 is fixedly connected to a servo motor, the output end of the servo motor passes through the protective cover 1 and is rotatably connected thereto, the output end of the servo motor is coaxially fixedly connected to a screw rod 1, a nut rod 1 is threadedly connected to the screw rod 1, a connecting block 1 is fixedly connected to the nut rod 1, and the connecting block 1 One side of the flotation tank is fixedly connected to a movable plate, and a guide mechanism is provided in the second protective cover, and a defoaming mechanism and an adjusting mechanism are respectively provided on the movable plates, and a partition plate one is fixedly connected to the inner wall of the flotation tank, and one side of the partition plate one is respectively fixedly connected to a guide block and a foam guide block one, and the other side of the partition plate one is connected to a connecting pipe, and one end of the connecting pipe is connected to a vertical pipe, a liquid level mechanism is provided on the top of the partition plate one, and a partition plate two is fixedly connected to the bottom of the flotation tank, and a foam guide block two is fixedly connected to the side wall of the flotation tank, and a collecting tank is fixedly connected to one side of the flotation tank, and a foam scraping mechanism is provided between the first and second protective covers; The defoaming mechanism includes a mounting base, a pair of electric telescopic rods and a mounting block, the mounting base is fixedly connected to the top of the movable plate, each of the electric telescopic rods is fixedly connected to the bottom of the movable plate, the mounting block is arranged at the bottom of the movable plate, a blower is fixedly connected to the mounting base, the output end of each electric telescopic rod is fixedly connected to the mounting block, a protrusion is fixedly connected to one side of the mounting block, a pressure switch is fixedly connected to the bottom of the protrusion, an air knife is fixedly connected to the mounting block, the output end of the blower is connected to a connecting pipe, and one end of the connecting pipe is connected to the input end of the air knife; The adjustment mechanism includes a shell, which is fixedly connected to the top of the movable plate, and a wiring port and a plurality of air vents are respectively opened on one side of the shell. A sliding rheostat is fixedly connected to the side wall of the shell, and a first terminal and a second terminal are respectively provided on the sliding rheostat. A lifting rod is slidably connected to the shell, and a spring is sleeved on the outer periphery of the lifting rod. A crossbar is fixedly connected to the top of the lifting rod, and an adjustment plate is fixedly connected to one side of the protective cover. The liquid level mechanism includes a support plate 1, the support plate 1 is fixedly connected to the top of the partition plate 1, a sliding rod is slidably connected to the support plate 1, the top of the sliding rod is fixedly connected to the contact plate, and the bottom of the sliding rod is fixedly connected to the float; The scraping mechanism includes a protective cover three and a screw two, the protective cover three is fixedly connected between the protective cover one and the protective cover two, the screw two is rotatably connected to the protective cover one, one end of the screw two is coaxially fixedly connected to the bevel gear one, and the other end of the screw two is rotatably connected to the protective cover two, the screw two is threadedly connected to a nut two, the nut two is fixedly connected to a connecting rod, and the bottom of the connecting rod is fixedly connected to a scraper.

[0006] As a further solution of the present invention: the guide mechanism includes a guide rod, the guide rod is fixedly connected to the inner wall of the second protective cover, the guide rod is slidably connected to a slip ring, the slip ring is fixedly connected to a connecting block 2, and one side of the connecting block 2 is fixedly connected to the movable plate.

[0007] As a further solution of the present invention: a mounting plate is fixedly connected to the inner wall of the protective cover, one end of the screw rod passes through the mounting plate and is rotatably connected thereto, one end of the screw rod is coaxially fixedly connected to a bevel gear rod, and the bevel gear rod and the bevel gear rod are meshed with each other.

[0008] As a further solution of the present invention: a pair of discharge ports are provided at the bottom of the collecting tank.

[0009] As a further solution of the present invention: a pair of support plates 2 are fixedly connected to the top of the flotation tank, the top of the partition plate 1 is fixedly connected to the support plate 2, each of the tops of the support plates 2 is fixedly connected to a motor, the output end of the motor passes through the support plate 2 and is rotatably connected thereto, the output end of the motor is coaxially fixedly connected to a stirring shaft, two pairs of stirring blades are coaxially fixedly connected to the stirring shaft, each of the tops of the support plates 2 is fixedly connected to a positioning block, the positioning block is fixedly connected to a dissolved air pipe, a plurality of air guide pipes are connected to the dissolved air pipe, one end of each of the air guide pipes passes through the partition plate 1 and is fixedly connected thereto, one end of each of the air guide pipes is connected to an aeration head, a water inlet is connected to one side of the flotation tank, and a water outlet is connected to the other side of the flotation tank.

[0010] As a further solution of the present invention: a control box is fixedly connected to the top of the movable plate, a control module is provided in the control box, the control module is electrically connected to the electric telescopic rod, and the control module is electrically connected to the pressure switch.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention is provided with a movable plate, a defoaming mechanism and an adjusting mechanism. The movable plate can drive the defoaming mechanism to move along the sewage liquid surface. The defoaming mechanism pushes the floating foam on the sewage surface by blowing out airflow, replacing the scraping plate with airflow, effectively reducing the residual floating foam and preventing the floating foam from adhering to the scraping plate and causing secondary pollution. The adjusting mechanism can adjust the size of the airflow in the defoaming mechanism so that the airflow gradually increases as it approaches the collection tank, ensuring that the floating foam is smoothly collected in the tank, thereby improving the defoaming efficiency. 2. The present invention is equipped with a connecting pipe, a vertical pipe and a liquid level mechanism. Sewage enters the vertical pipe through the connecting pipe. The sewage level in the vertical pipe is at the same height as the sewage level in the flotation tank. The liquid level mechanism can detect the liquid level of the sewage in the vertical pipe, so that the defoaming mechanism can be adjusted to the optimal operating height before starting operation, thereby improving the efficiency of flotation removal. 3. The present invention is provided with a collecting tank, a discharge port and a foam scraping mechanism. The foam scraping mechanism can reciprocate in the collecting tank so that the foam in the collecting tank is discharged through the discharge ports close to the inner walls on both sides, which facilitates the continuous discharge of foam and reduces the frequency of manual cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ; Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ; Figure 3 Schematic diagram of the cross-sectional structure of the flotation tank of the present invention; Figure 4 This is a schematic diagram of a cross-sectional structure of a protective cover according to the present invention; Figure 5 Schematic diagram of the movable plate, partition plate and defoaming mechanism of the present invention Figure 1 ; Figure 6 Schematic diagram of the movable plate, partition plate and defoaming mechanism of the present invention Figure 2 ; Figure 7 Schematic diagram of the cross-sectional structure of the shell of the present invention; Figure 8 A schematic diagram of the crossbar and adjustment plate of the present invention; Figure 9 It is a schematic structural diagram of a partition plate cross section, a guide block cross section, a foam guide block cross section, a connecting pipe cross section, a vertical pipe cross section and a support plate cross section of the present invention; Figure 10 Schematic diagrams of the structures of the first, second and third cross-sections of the protective cover of the present invention; Figure 11 Schematic diagram of the cross-section of the collecting tank and the scraper of the present invention; Figure 12This is a schematic diagram of the second cross-sectional structure of the protective cover of the present invention.

[0013] In the figure: 1. Floatation tank; 2. Support rod; 3. Protective cover 1; 4. Protective cover 2; 5. Servo motor; 6. Screw 1; 7. Nut 1; 8. Moving plate; 9. Partition 1; 10. Guide block; 11. Foam guide block 1; 12. Connecting pipe; 13. Vertical pipe; 14. Partition 2; 15. Foam guide block 2; 16. Collecting tank; 17. Electric telescopic rod; 18. Mounting block; 19. Blower; 20. Pressure switch; 21. Air knife; 22. Housing; 23. Sliding rheostat; 24. Terminal 1; 25. Terminal 2; 26. Lifting rod; 27. Spring; 28. Cross bar; 29. ​​Adjustment plate; 30. Support plate one; 31. Sliding rod; 32. Contact plate; 33. Float; 34. Protective cover three; 35. Screw two; 36. Bevel gear one; 37. Nut two; 38. Scraper; 39. Guide rod; 40. Slip ring; 41. Bevel gear two; 42. Discharge port; 43. Support plate two; 44. Motor; 45. Mixing blade; 46. Dissolved air pipe; 47. Aeration head; 48. Water inlet; 49. Water outlet; 50. Control box. DETAILED DESCRIPTION

[0014] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0015] like Figures 1-12 As shown, the present invention provides a technical solution: A multi-stage wastewater treatment device based on the production of ultraviolet absorbers includes a flotation tank 1, a pair of support rods 2 are fixedly connected to both sides of the flotation tank 1, one pair of support rods 2 is fixedly connected to the top of a protective cover 3, and the other pair of support rods 2 is fixedly connected to the top of a protective cover 2 4, a servo motor 5 is fixedly connected to one side of the protective cover 3, the output end of the servo motor 5 passes through the protective cover 3 and is rotatably connected thereto, the output end of the servo motor 5 is coaxially fixedly connected to a screw 6, a nut 7 is threadedly connected to the screw 6, a connecting block 1 is fixedly connected to the nut 7, a movable plate 8 is fixedly connected to one side of the connecting block 1, a guide mechanism is provided in the protective cover 2 4, and a defoaming mechanism and a defoaming mechanism are respectively provided on the movable plate 8. Adjustment mechanism, a partition 9 is fixedly connected to the inner wall of the flotation tank 1, and a guide block 10 and a foam guide block 11 are fixedly connected to one side of the partition 9 respectively, and a connecting pipe 12 is provided on the other side of the partition 9, and a vertical pipe 13 is provided at one end of the connecting pipe 12. A liquid level mechanism is provided on the top of the partition 9, a partition 2 is fixedly connected to the bottom of the flotation tank 1, a foam guide block 2 15 is fixedly connected to the side wall of the flotation tank 1, and a collecting tank 16 is fixedly connected to one side of the flotation tank 1. A scraping mechanism is provided between the protective cover 1 3 and the protective cover 2 4, and a pair of discharge ports 42 are provided at the bottom of the collecting tank 16, a water inlet 48 is provided on one side of the flotation tank 1, and a water outlet 49 is provided on the other side of the flotation tank 1; Specifically, a reaction zone is formed between partition 1 9 and the inner wall of the flotation tank 1 near the water inlet 48, an air dissolution zone is formed between partition 1 9 and partition 2 14, and a separation zone is formed between partition 2 14 and the inner wall of the flotation tank 1 near the water outlet 49. The sewage enters the flotation tank 1 through the water inlet 48, reacts with the coagulant and flocculant in the reaction zone to form flocs, and the sewage containing the flocs generates tiny bubbles through the air dissolution zone, which float up in combination with the floc suspended matter, and the sewage carrying the bubbles enters the separation zone through the guide block 10. The bubbles float up to form froth, and the liquid level of the sewage always submerges the outer edges of the foam guide block 11 and the foam guide block 2 15. The sewage enters the vertical pipe 13 through the connecting pipe 12. The sewage liquid level in the vertical pipe 13 is at the same height as the sewage liquid level in the flotation tank 1. The liquid level mechanism can detect the liquid level of the sewage in the reaction vertical pipe 13, so that the defoaming mechanism is adjusted to the optimal working height before starting the operation, and the servo is started. The motor 5 and the output end of the servo motor 5 drive the screw 6 to rotate, so that the nut 7 moves along the screw 6, and the nut 7 moves away from the servo motor 5. A through slide groove 1 is opened on one side of the protective cover 3. The nut 7 drives the connecting block 1 to slide along the through slide groove 1, and the connecting block 1 drives the movable plate 8 to move together. The movable plate 8 drives the defoaming mechanism to move along the sewage liquid surface. The defoaming mechanism pushes the floating foam on the surface of the sewage by blowing out air flow, and replaces the scraping plate with air flow, effectively reducing the residual floating foam, and preventing the floating foam from adhering to the scraping plate to cause secondary pollution. The adjustment mechanism can adjust the size of the air flow in the defoaming mechanism, so that the air flow gradually increases as it approaches the collection tank 16, ensuring that the floating foam smoothly passes through the foam guide block 2 15 and merges into the collection tank 16. At the same time, the scraping mechanism can reciprocate in the collection tank 16, so that the floating foam in the collection tank 16 is discharged through the discharge port 42 near the inner wall on both sides, and the sewage can be discharged through the outlet 49. The defoaming mechanism includes a mounting base, a pair of electric telescopic rods 17 and a mounting block 18. The mounting base is fixedly connected to the top of the movable plate 8. Each electric telescopic rod 17 is fixedly connected to the bottom of the movable plate 8. The mounting block 18 is arranged at the bottom of the movable plate 8. A blower 19 is fixedly connected to the mounting base. The output end of each electric telescopic rod 17 is fixedly connected to the mounting block 18. A protrusion is fixedly connected to one side of the mounting block 18. A pressure switch 20 is fixedly connected to the bottom of the protrusion. An air knife 21 is fixedly connected to the mounting block 18. The output end of the blower 19 is connected to a connecting pipe, one end of the connecting pipe is connected to the input end of the air knife 21. A control box 50 is fixedly connected to the top of the movable plate 8. A control module is arranged in the control box 50. The control module is electrically connected to the electric telescopic rod 17, and the control module is electrically connected to the pressure switch 20. Specifically, the air knife 21 is an accessory that can eject high-speed airflow through a specially designed narrow slit or blade to form a high-intensity, uniform airflow layer. When the electric telescopic rod 17 is started, the output end of the electric telescopic rod 17 drives the mounting block 18 to descend, and the pressure switch 20 descends together with the mounting block 18. When the pressure switch 20 contacts the liquid level mechanism and is triggered, the control module controls the electric telescopic rod 17 to stop extending and locking the electric telescopic rod 17. The blower 19 is started, and the output end of the blower 19 sends the high-speed airflow through the connecting pipe to the input end of the air knife 21, and the air knife 21 ejects a uniform airflow layer. The adjustment mechanism includes a housing 22, which is fixedly connected to the top of the movable plate 8. A wiring port and a plurality of vent holes are respectively opened on one side of the housing 22. A sliding rheostat 23 is fixedly connected to the side wall of the housing 22. The sliding rheostat 23 is respectively provided with a terminal 1 24 and a terminal 2 25. A lifting rod 26 is slidably connected to the housing 22. A spring 27 is sleeved on the outer periphery of the lifting rod 26. A crossbar 28 is fixedly connected to the top of the lifting rod 26. An adjustment plate 29 is fixedly connected to one side of the protective cover 3. The sliding rheostat 23 is a component that adjusts the resistance value by changing the length of the resistance wire connected to the circuit. The sliding rheostat 23 is connected in series in the control circuit of the blower 19. The terminal 1 24 and the terminal 2 25 are used to connect the wires. The wiring port on one side of the housing 22 can be used for the wires to pass through. The bottom of the lifting rod 26 is fixedly connected to the slider on the sliding rheostat 23. One end of the spring 27 is against the slider, and the other end is against the top of the housing 22. The spring 27 pushes the slider to make the cross bar 28 close to the top of the adjustment plate 29. The top profile of the adjustment plate 29 consists of a long inclined surface and short flat surfaces at both ends. The whole is in an inclined state. When the housing 22 moves with the moving plate 8, the cross bar 28 slides horizontally along the top of the adjustment plate 29 for a distance and then gradually descends along the inclined surface. After descending to a certain height, it continues to slide horizontally for a distance. The cross bar 28 drives the slider on the sliding rheostat 23 to gradually slide down along the metal rod on the sliding rheostat 23 through the lifting rod 26, so that the resistance of the sliding rheostat 23 gradually decreases and the power of the blower 19 gradually increases. The liquid level mechanism includes a support plate 30, which is fixedly connected to the top of the partition 9. A sliding rod 31 is slidably connected to the support plate 30, a contact plate 32 is fixedly connected to the top of the sliding rod 31, and a float 33 is fixedly connected to the bottom of the sliding rod 31. Specifically, when sewage enters the vertical pipe 13, the float 33 floats in the sewage, and the float 33 lifts the contact plate 32 through the sliding rod 31, and the pressure switch 20 is triggered by pressing the contact plate 32; The scraping mechanism includes a protective cover 34 and a screw 2 35. The protective cover 34 is fixedly connected between the protective cover 1 3 and the protective cover 2 4. The screw 2 35 is rotatably connected to the protective cover 1 3. One end of the screw 2 35 is coaxially fixedly connected to the bevel gear 1 36. The other end of the screw 2 35 is rotatably connected to the protective cover 2 4. The screw 2 35 is threadedly connected to a nut 2 37. The nut 2 37 is fixedly connected to a connecting rod. The bottom of the connecting rod is fixedly connected to a scraper 38. A mounting plate is fixedly connected to the inner wall of the protective cover 1 3. One end of the screw 1 6 passes through the mounting plate and is rotatably connected thereto. One end of the screw 1 6 is coaxially fixedly connected to the bevel gear 2 41. The bevel gear 2 41 and the bevel gear 1 36 are meshed with each other. Specifically, screw 1 (6) drives bevel gear 1 (36) to rotate via bevel gear 2 (41), which in turn drives screw 2 (35) to rotate, causing nut 2 (37) to move along screw 2 (35). An opening is provided at the bottom of protective cover 3 (34) for sliding of the connecting rod. Nut 2 (37) drives scraper 38 to move within collecting trough 16 via the connecting rod. When nut 1 (7) moves to either end of screw 1 (6), nut 2 (37) also moves to one end of screw 2 (35). The guide mechanism includes a guide rod 39, which is fixedly connected to the inner wall of the protective cover 4. A slip ring 40 is slidably connected to the guide rod 39, and a connecting block 2 is fixedly connected to the slip ring 40. One side of the connecting block 2 is fixedly connected to the movable plate 8. Specifically, a through-slot 2 is provided on one side of the protective cover 4 for the sliding of the connecting block 2, and the movable plate 8 drives the slip ring 40 to slide along the guide rod 39 through the connecting block 2; A pair of support plates 43 are fixedly connected to the top of the flotation tank 1, and the top of the partition 9 is fixedly connected to the support plate 43. A motor 44 is fixedly connected to the top of each support plate 43. The output end of the motor 44 passes through the support plate 43 and is rotatably connected thereto. The output end of the motor 44 is coaxially fixedly connected to a stirring shaft, and two pairs of stirring blades 45 are coaxially fixedly connected to the stirring shaft. A positioning block is fixedly connected to the top of each support plate 43, and an air dissolving tube 46 is fixedly connected to the positioning block. The air dissolving tube 46 is connected to a plurality of air guide tubes, and one end of each air guide tube passes through the partition 9 and is fixedly connected thereto, and one end of each air guide tube is connected to an aeration head 47. Specifically, the motor 44 is started, and the output end of the motor 44 drives the stirring blade 45 to rotate through the stirring shaft to mix the coagulant, flocculant and sewage. The dissolved air pipe 46 is connected to the gas pipeline. The gas passes through the dissolved air pipe 46 and the air guide pipe in sequence and is finally ejected from the aeration head 47.

[0016] The working principle of the present invention is: Sewage enters the vertical pipe 13 through the connecting pipe 12, and the float 33 floats in the sewage. The float 33 lifts the contact plate 32 via the sliding rod 31, and the sewage liquid level in the vertical pipe 13 is at the same height as the sewage liquid level in the flotation tank 1. Before starting, the electric telescopic rod 17 is started. The output end of the electric telescopic rod 17 drives the mounting block 18 to descend, and the pressure switch 20 descends together with the mounting block 18. When the pressure switch 20 contacts the contact plate 32 and is triggered, the control module controls the electric telescopic rod 17 to stop extending and retracting and keeps the electric telescopic rod 17 locked; First, start the blower 19. The output end of the blower 19 sends a high-speed airflow to the input end of the air knife 21 through the connecting pipe. The air knife 21 sprays a uniform airflow layer. Then start the servo motor 5. The output end of the servo motor 5 drives the screw 6 to rotate, causing the nut 7 to move along the screw 6. The nut 7 moves away from the servo motor 5. The nut 7 drives the moving plate 8 to move together through the connecting block 1. The moving plate 8 drives the air knife 21 to move along the sewage surface. The air knife 21 pushes the foam on the sewage surface by blowing out air, replacing the scraper with air, effectively reducing the foam residue and preventing the foam from adhering to the scraper and causing secondary pollution. When the housing 22 moves with the movable plate 8, the crossbar 28 slides horizontally for a distance along the top of the adjustment plate 29 and then gradually descends along the inclined surface. After descending to a certain height, it continues to slide horizontally for a distance. The crossbar 28 drives the slider on the sliding rheostat 23 to gradually slide down along the metal rod on the sliding rheostat 23 through the lifting rod 26, so that the resistance value of the sliding rheostat 23 gradually decreases, the power of the blower 19 gradually increases, and the airflow gradually increases as it approaches the collection tank 16, ensuring that the floating foam can smoothly pass through the second foam guide block 15 and flow into the collection tank 16. After the foam is removed, the blower 19 is turned off and the electric telescopic rod 17 is restarted. The output end of the electric telescopic rod 17 drives the mounting block 18 to rise, and at the same time, the servo motor 5 reverses to drive the movable plate 8 to reset. At the same time, screw 1 6 drives bevel gear 1 36 to rotate through bevel gear 2 41, and bevel gear 1 36 drives screw 2 35 to rotate, so that nut 2 37 moves along screw 2 35. An opening is provided at the bottom of protective cover 34 for sliding of connecting rod. Nut 2 37 drives scraper 38 to reciprocate in collecting trough 16 through connecting rod, so that the floating foam in collecting trough 16 is discharged through discharge ports 42 close to the inner walls on both sides.

[0017] The above describes in detail the preferred embodiments of this patent, but this patent is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. A multi-stage wastewater treatment device based on the production of ultraviolet absorbers, comprising a flotation tank (1), characterized in that: A pair of support rods (2) are fixedly connected to both sides of the flotation tank (1), wherein the top of one pair of support rods (2) is fixedly connected to a protective cover 1 (3), wherein the top of the other pair of support rods (2) is fixedly connected to a protective cover 2 (4), and one side of the protective cover 1 (3) is fixedly connected to a servo motor (5), the output end of the servo motor (5) passes through the protective cover 1 (3) and is rotatably connected thereto, the output end of the servo motor (5) is coaxially fixedly connected to a screw rod 1 (6), the screw rod 1 (6) is threadedly connected to a nut 1 (7), the nut 1 (7) is fixedly connected to a connecting block 1, and one side of the connecting block 1 is fixedly connected to a moving plate (8), a guide mechanism is provided in the protective cover 2 (4), and the moving plate (8) is fixedly connected to the connecting block 1. The plate (8) is provided with a defoaming mechanism and a regulating mechanism, respectively; a partition plate (9) is fixedly connected to the inner wall of the flotation tank (1); a guide block (10) and a foam guide block (11) are fixedly connected to one side of the partition plate (9); a connecting pipe (12) is provided on the other side of the partition plate (9); a vertical pipe (13) is provided at one end of the connecting pipe (12); a liquid level mechanism is provided on the top of the partition plate (9); a partition plate (14) is fixedly connected to the bottom of the flotation tank (1); a foam guide block (15) is fixedly connected to the side wall of the flotation tank (1); a collecting tank (16) is fixedly connected to one side of the flotation tank (1); a foam scraping mechanism is provided between the protective cover (3) and the protective cover (4); The defoaming mechanism comprises a mounting base, a pair of electric telescopic rods (17) and a mounting block (18), wherein the mounting base is fixedly connected to the top of the movable plate (8), each of the electric telescopic rods (17) is fixedly connected to the bottom of the movable plate (8), the mounting block (18) is arranged at the bottom of the movable plate (8), a blower (19) is fixedly connected to the mounting base, the output end of each electric telescopic rod (17) is fixedly connected to the mounting block (18), a convex block is fixedly connected to one side of the mounting block (18), a pressure switch (20) is fixedly connected to the bottom of the convex block, an air knife (21) is fixedly connected to the mounting block (18), the output end of the blower (19) is connected to a connecting pipe, and one end of the connecting pipe is connected to the input end of the air knife (21); The regulating mechanism comprises a shell (22), the shell (22) being fixedly connected to the top of the movable plate (8), a wiring port and a plurality of vent holes being respectively provided on one side of the shell (22), a sliding rheostat (23) being fixedly connected to the side wall of the shell (22), a terminal 1 (24) and a terminal 2 (25) being respectively provided on the sliding rheostat (23), a lifting rod (26) being slidably connected to the shell (22), a spring (27) being sleeved on the outer periphery of the lifting rod (26), a cross bar (28) being fixedly connected to the top of the lifting rod (26), and an regulating plate (29) being fixedly connected to one side of the protective cover 1 (3); The liquid level mechanism comprises a support plate (30), the support plate (30) being fixedly connected to the top of the partition plate (9), a sliding rod (31) being slidably connected to the support plate (30), a contact plate (32) being fixedly connected to the top of the sliding rod (31), and a float (33) being fixedly connected to the bottom of the sliding rod (31); The scraping mechanism includes a protective cover three (34) and a screw rod two (35), wherein the protective cover three (34) is fixedly connected between the protective cover one (3) and the protective cover two (4), and the screw rod two (35) is rotatably connected to the protective cover one (3). One end of the screw rod two (35) is coaxially fixedly connected to the bevel gear one (36), and the other end of the screw rod two (35) is rotatably connected to the protective cover two (4). The screw rod two (35) is threadedly connected to a nut two (37), and the nut two (37) is fixedly connected to a connecting rod, and the bottom of the connecting rod is fixedly connected to a scraper (38).

2. A multi-stage wastewater treatment device based on ultraviolet absorber production according to claim 1, characterized in that: The guide mechanism includes a guide rod (39), the guide rod (39) is fixedly connected to the inner wall of the second protective cover (4), a slip ring (40) is slidably connected to the guide rod (39), a connecting block 2 is fixedly connected to the slip ring (40), and one side of the connecting block 2 is fixedly connected to the movable plate (8).

3. A multi-stage wastewater treatment device based on ultraviolet absorber production according to claim 2, characterized in that: A mounting plate is fixedly connected to the inner wall of the protective cover 1 (3), one end of the screw 1 (6) passes through the mounting plate and is rotatably connected thereto, one end of the screw 1 (6) is coaxially fixedly connected to a bevel gear 2 (41), and the bevel gear 2 (41) and the bevel gear 1 (36) are meshed with each other.

4. A multi-stage wastewater treatment device based on ultraviolet absorber production according to claim 3, characterized in that: A pair of discharge ports (42) are provided at the bottom of the collecting tank (16).

5. The multi-stage wastewater treatment device based on the production of ultraviolet absorbers according to claim 4, characterized in that: A pair of support plates (43) are fixedly connected to the top of the flotation tank (1), and the top of the partition plate (9) is fixedly connected to the support plate (43). A motor (44) is fixedly connected to the top of each support plate (43). The output end of the motor (44) passes through the support plate (43) and is rotatably connected thereto. The output end of the motor (44) is coaxially fixedly connected to a stirring shaft. Two pairs of stirring blades (45) are coaxially fixedly connected to the stirring shaft. A positioning block is fixedly connected to the positioning block. A dissolving air pipe (46) is connected to the dissolving air pipe (46). A plurality of air guide pipes are connected to the air guide pipe (46). One end of each air guide pipe passes through the partition plate (9) and is fixedly connected thereto. One end of each air guide pipe is connected to an aeration head (47). A water inlet (48) is connected to one side of the flotation tank (1), and a water outlet (49) is connected to the other side of the flotation tank (1).

6. The multi-stage wastewater treatment device based on ultraviolet absorber production according to claim 5, characterized in that: A control box (50) is fixedly connected to the top of the movable plate (8), a control module is provided in the control box (50), the control module is electrically connected to the electric telescopic rod (17), and the control module is electrically connected to the pressure switch (20).

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