A micro-nano high-speed horizontal flow air flotation machine

Abstract

The present invention relates to the technical field of sewage treatment, and discloses a micro-nano high-speed horizontal flow air flotation machine, which includes an air flotation machine main body, an air compressor, a dissolved air tank and a water pump. A stirring chamber, a gas release chamber and a reaction zone are provided inside the air flotation machine main body. A stirring and aeration mechanism is provided inside the stirring chamber, and a releaser is provided inside the gas release chamber. The releaser is connected to the dissolved air tank through pipeline three. The releaser consists of a container water inlet and a number of pipe bodies. Each pipe body includes an outer flow channel pipe and an inner flow channel pipe. An expansion mechanism is provided inside the inner flow channel pipe, and the expansion mechanism is connected to the outer flow channel pipe. A slag scraper is provided at the upper part on the side far away from the gas release chamber inside the reaction zone, and a slag collection tank is provided below the right side of the slag scraper. Beneficial effects: The sufficiency of the contact between the dissolved air water and the sewage, and the expansion mechanism inside the pipeline can facilitate the solution of blockage and achieve the effect of sufficient contact.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and more specifically, to a micro-nano high-speed horizontal flow air flotation machine. Background Art

[0002] As is well known, with the increasing amount of sewage discharge and the decreasing amount of available water resources, in order to ensure the recycling of water resources, sewage needs to be purified. Among them, the dissolved air flotation machine used for sewage treatment has a very large usage amount in existing environmental protection equipment. The main principle of the dissolved air flotation machine is to expose the fine bubbles dissolved in high-pressure water into the sewage, so that the tiny bubbles adsorb the suspended substances in the sewage. By using the upward floating effect of the bubbles, the suspended substances float to the surface of the sewage, and then the suspended substances floating on the sewage surface are fished out, so as to achieve the purification effect of the sewage.

[0003] When the existing dissolved air flotation machine is in use, the traditional release channel is narrow, tortuous, circuitous and prone to blockage. At the same time, the dissolved air water and the sewage do not contact sufficiently, resulting in poor mixing uniformity of the bubbles and the sewage, and the adsorption effect of the bubbles on the impurities in the sewage will become poor, leading to poor sewage purification effect. At the same time, the impurities float evenly on the sewage surface, and the fluidity of the impurities on the water surface is poor, making it difficult to aggregate and fish out the floating impurities, resulting in more residual impurities on the water surface. The impurities float on the water surface for a long time. When the bubbles burst, the impurities on the water surface are easy to sink into the sewage, causing secondary pollution of the sewage by the impurities and poor sewage purification effect. Summary of the Invention

[0004] The technical task of the present invention is to provide a micro-nano high-speed horizontal flow air flotation machine to solve the above problems in view of the above deficiencies.

[0005] The technical solution of the present invention is realized as follows:

[0006] A micro-nano high-speed horizontal flow air flotation machine, comprising an air flotation machine main body, an air compressor, a dissolved air tank and a water pump. The air flotation machine main body is provided with a stirring chamber, a gas release chamber and a reaction zone. The stirring chamber is provided with a stirring and aeration mechanism. The gas release chamber is provided with a releaser. The releaser is connected to the dissolved air tank through pipeline three. The releaser consists of a container water inlet and several pipe bodies. Each pipe body includes an outer flow channel pipe and an inner flow channel pipe. An expansion mechanism is arranged in the inner flow channel pipe and is connected to the outer flow channel pipe. On the upper side of the reaction zone away from the gas release chamber, there is a slag scraper, and a slag collection tank is arranged below the right side of the slag scraper. On one side of the slag collection tank of the air flotation machine main body, there is a water outlet. At the lower part of the air flotation machine main body on the side away from the water outlet, there is a raw water inlet. Several drain openings are arranged at the bottom of the air flotation machine main body. A swirl mixer is arranged on the outer side of the air flotation machine main body, and one end of the pipeline on the swirl mixer is connected to the air flotation machine main body. The air compressor is connected to the dissolved air tank through an air introduction pipe. The dissolved air tank is connected to the water pump through pipeline one. The water pump is connected to the air flotation machine main body through pipeline two.

[0007] Preferably, an air tank is arranged between the air compressor and the dissolved air tank. The air compressor is connected to the air tank through pipe one, and the air tank is connected to the dissolved air tank through pipe two.

[0008] Preferably, the stirring and aeration mechanism includes a motor. The motor is installed on one side of the top of the air flotation machine main body. A fixed disk one is arranged at the bottom of the motor and is fixed on the top of the inner part of the stirring chamber. An output shaft is arranged at the bottom of the motor. The output shaft penetrates through the air flotation machine main body and the fixed disk one. A rotating column one is arranged at the bottom of the output shaft. A fixed disk two is arranged below the rotating column one. A rotating column two is arranged below the fixed disk two. A fixed disk three is arranged below the rotating column two. The bottom of the fixed disk three is fixed at the bottom of the inner part of the stirring chamber.

[0009] Preferably, several tracks are arranged between the fixed disk one and the fixed disk two and between the fixed disk two and the fixed disk three at the outer side of the rotating column. Sliders that match with the tracks are arranged on the tracks. T-shaped lifting plates are arranged on the sides of the sliders away from the tracks. At the top center of the sides of the T-shaped lifting plates close to the rotating column one and the rotating column two, L-shaped seats are arranged, and limiting sliding rods are arranged on the L-shaped seats.

[0010] Preferably, guiding grooves are arranged on the surfaces of the rotating column one and the rotating column two. The inner ends of the limiting sliding rods are located in the guiding grooves. Several air vent holes are arranged on the T-shaped lifting plates.

[0011] Preferably, a baffle is provided at the outlet end of the outer flow channel pipe. The expansion mechanism includes a micro driver fixed at the center of the inner side of the baffle. On the other side of the micro driver, there is a threaded rod which passes through the center position inside the inner flow channel pipe. A second matching sleeve block is sleeved on the side of the threaded rod away from the micro driver.

[0012] Preferably, a hollow cylinder is sleeved on the side of the threaded rod close to the micro driver. One side of the hollow cylinder is fixed to the side of the micro driver. On both outer sides of the hollow cylinder, there are first sleeve blocks, and several first support blocks are provided on the outer sides of the first sleeve blocks. A first set of driving blocks is provided on each of the first support blocks; several second support blocks are provided on the outer side of the second sleeve block, and a second set of driving blocks is provided on each of the second support blocks. Scrapers are connected to the outer sides of the second driving blocks and the first driving blocks.

[0013] Preferably, the inner flow channel pipe is a corrugated pipe, the outer flow channel pipe is a stainless steel conduit, and a filler is provided between the inner wall of the outer flow channel pipe and the outer wall of the inner flow channel pipe. The filler includes sponge, elastic member, rubber foam, etc.; the baffle is a stainless steel filter plate.

[0014] Preferably, the slag scraper includes a driving motor. A main sprocket is connected to the driving motor. A first chain is provided on the main sprocket. The other side of the first chain is wound around a first secondary sprocket. A first shaft rod is inserted through the middle of the first secondary sprocket. A second secondary sprocket is provided at the other end of the first shaft rod. A second shaft rod is inserted through the middle of the second secondary sprocket. A third secondary sprocket is provided at the other end of the second shaft rod. A second chain is provided on the third secondary sprocket. The other side of the second chain is wound around a fourth secondary sprocket. A third shaft rod is inserted through the middle of the fourth secondary sprocket. A fifth secondary sprocket is provided on the other side of the third shaft rod. The fifth secondary sprocket is connected to the third secondary sprocket through a third chain. Several slag scraping plates are provided between the upper and lower sides of the second chain and the third chain.

[0015] Preferably, supports are provided at both ends of the second shaft rod and the third shaft rod. The supports are fixed on the main body of the air flotation machine. The driving motor is connected to the main body of the air flotation machine through a second support; the slag scraping and discharging direction of the slag scraper is reverse to the sewage flow direction, and a slag collecting tank is provided at the water inlet end.

[0016] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0017] 1. The air sent by the air compressor into the air tank is brought into the dissolved air tank through the jet device, and is forced to dissolve in water under a pressure of 0.35 Mpa to form dissolved air water, which is then sent to the flotation tank. In the case of sudden release, the air dissolved in the water precipitates to form a large number of microbubble groups. The raw sewage water added with flocculant is fully flocculated through stirring. The flocculated suspended solids in the sewage come into full contact with the microbubble groups, and are adsorbed in the well-flocculated suspended solids during the slow rising process, causing their density to decrease and floating to the water surface, achieving the purpose of removing SS and COD.

[0018] 2. By setting a double-tube type release device, the problems of narrow, tortuous, circuitous and blocked flow channels in the existing release device are solved, achieving the sufficiency of contact between the dissolved air water and the sewage. The expansion mechanism inside the pipeline can facilitate the solution of blockage and sufficient contact effects.

[0019] 3. The device has a high dissolved air efficiency (80%-90%) and a large dissolved air volume. Microbubbles with a fine particle size (10-20μm) are released through the release device, and the residence time in the reaction zone is 25-30 minutes, resulting in good floating scum separation effect, and having the characteristics of compact structure, beautiful shape and stable performance.

[0020] 4. It has a high degree of automation, is easy to operate and manage simply. Just operate the start-stop button to turn it on and off.

[0021] 5. The slag scraping frequency can be set according to requirements, with good slag scraping effect, and the moisture content of the floating scum can be adjusted according to requirements.

[0022] 6. It is applied to the sewage treatment of petroleum, chemical industry, printing and dyeing, papermaking, oil refining, leather, steel, machining, starch, food, breeding, slaughtering, etc. The dissolved air flotation machine is a common solid-liquid separation equipment in the sewage treatment industry, which can effectively remove non-dissolved substances such as suspended solids, oils and fats, and colloidal substances in sewage, and is the main equipment for the preliminary treatment of sewage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 is the overall structure connection schematic diagram according to the embodiment of the present invention;

[0025] Figure 2 is the end structure schematic diagram of the cyclone mixer according to the embodiment of the present invention;

[0026] Figure 3Schematic diagram of the releaser end structure according to an embodiment of the present invention Figure 1 ;

[0027] Figure 4 Schematic diagram of the releaser end structure according to an embodiment of the present invention Figure 2 ;

[0028] Figure 5 Schematic diagram of the stirring and aeration mechanism end structure according to an embodiment of the present invention;

[0029] Figure 6 Schematic diagram of the rotating column end structure according to an embodiment of the present invention;

[0030] Figure 7 Schematic diagram of the guide groove end structure according to an embodiment of the present invention;

[0031] Figure 8 Schematic diagram of the T-shaped lifting plate end structure according to an embodiment of the present invention;

[0032] Figure 9 Schematic diagram of the releaser end structure according to an embodiment of the present invention;

[0033] Figure 10 Schematic diagram of the inner and outer flow channel pipe end structure according to an embodiment of the present invention;

[0034] Figure 11 Schematic diagram of the outer flow channel pipe outlet end structure according to an embodiment of the present invention;

[0035] Figure 12 Schematic diagram of the expansion mechanism end structure according to an embodiment of the present invention.

[0036] In the figure:

[0037] 1. Main body of air flotation machine; 2. Air compressor; 3. Dissolved air tank; 4. Water pump; 5. Stirring chamber; 6. Air release chamber; 7. Reaction zone; 8. Release device; 9. Pipe three; 10. Container water inlet; 11. Pipe body; 12. Outer flow channel pipe; 13. Inner flow channel pipe; 14. Expansion mechanism; 15. Scraper; 16. Slag collection tank; 17. Water outlet; 18. Raw water inlet; 19. Drain port; 20. Swirl mixer; 21. Air inlet pipe; 22. Pipe one; 23. Pipe two; 24. Motor; 25. Fixed disk one; 26. Rotating column one; 27. Fixed disk two; 28. Rotating column two; 29. Fixed disk three; 30. Track; 31. Slide block; 32. T-shaped lifting plate; 33. L-shaped seat; 34. Limit slide bar; 35. Guide groove; 36. Aeration hole; 37. Baffle; 38. Micro driver; 39. Threaded rod; 40. Sleeve block two; 41. Hollow cylinder; 42. Sleeve block one; 43. Support block one; 44. Driving block one; 45. Support block two; 46. Driving block two; 47. Scraper; 48. Driving motor; 49. Main sprocket; 50. Chain one; 51. Secondary sprocket one; 52. Shaft rod one; 53. Secondary sprocket two; 54. Shaft rod two; 55. Secondary sprocket three; 56. Chain two; 57. Secondary sprocket four; 58. Shaft rod three; 59. Secondary sprocket five; 60. Chain three; 61. Scraper plate; 62. Support one; 63. Support two. Detailed implementation mode

[0038] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be further described below with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0039] The present invention will be further described below with reference to the drawings and specific embodiments.

[0040] According to the embodiments of the present invention, as Figures 1-12 shown in:

[0041] The present invention provides a micro-nano high-speed horizontal flow air flotation machine, which includes an air flotation machine main body 1, an air compressor 2, a dissolved air tank 3 and a water pump 4. It is characterized in that a stirring chamber 5, a gas release chamber 6 and a reaction zone 7 are provided inside the air flotation machine main body 1. A stirring and aeration mechanism is provided inside the stirring chamber 5. A releaser 8 is provided inside the gas release chamber 6. The releaser 8 is connected to the dissolved air tank 3 through a third pipeline 9. The releaser 8 is composed of a container water inlet 10 and a plurality of pipe bodies 11. The pipe body 11 includes an outer flow channel pipe 12 and an inner flow channel pipe 13. An expansion mechanism 14 is provided inside the inner flow channel pipe 13. The expansion mechanism 14 is connected to the outer flow channel pipe 12. A slag scraper 15 is provided at the upper part on the side far from the gas release chamber 6 inside the reaction zone 7. A slag collection tank 16 is provided below the right side of the slag scraper 15. An outlet 17 is provided on one side of the air flotation machine main body 1 where the slag collection tank 16 is located. A raw water inlet 18 is provided at the lower part on the side of the air flotation machine main body 1 far from the outlet 17. A plurality of drain ports 19 are provided at the bottom of the air flotation machine main body 1. A swirl mixer 20 is provided on the outer side of the air flotation machine main body 1. One end of the pipeline on the swirl mixer 20 is connected to the air flotation machine main body 1. The air compressor 2 is connected to the dissolved air tank 3 through an air introduction pipe 21. The dissolved air tank 3 is connected to the water pump 4 through a first pipeline 22. The water pump 4 is connected to the air flotation machine main body 1 through a second pipeline 23. An air tank is provided between the air compressor 2 and the dissolved air tank 3. The air compressor 2 is connected to the air tank through a first pipe. The air tank is connected to the dissolved air tank 3 through a second pipe.

[0042] The air sent by the air compressor 2 into the air tank is brought into the dissolved air tank 3 through a jet device and is forced to dissolve in water under a pressure of 0.35 Mpa to form dissolved air water, which is sent to the air flotation pool. In the case of sudden release, the air dissolved in water precipitates to form a large number of microbubble groups. The sewage raw water added with a flocculant is fully flocculated through stirring. The flocculated suspended substances in the sewage are in full contact with the microbubble groups and are adsorbed in the well-flocculated suspended substances during the slow rising process, causing their density to decrease and float to the water surface, achieving the purpose of removing SS and COD.

[0043] The swirl mixer 20 utilizes the kinetic energy provided by the inlet lift pump, saving energy consumption and occupying less land. The sewage and the flocculation agent generate swirl and turbulence inside the swirl flocculation coil. A chemical addition port and an artificial sampling port are provided, which is convenient for observing the chemical addition reaction effect and adjusting the chemical addition amount. At the same time, the fully enclosed swirl flocculation coil can avoid the problems of scum accumulation and overflow at the top of the traditional chemical addition reaction tank, with a beautiful appearance, a clean site, and convenient daily maintenance.

[0044] In addition, the stirring and aeration mechanism includes a motor 24, which is installed on one side of the top of the air flotation machine body 1. A fixed disk one 25 is provided at the bottom of the motor 24, and the fixed disk one 25 is fixed on the inner top of the stirring chamber 5. An output shaft is provided at the bottom of the motor 24, and the output shaft penetrates through the air flotation machine body 1 and the fixed disk one 25. A rotating column one 26 is provided at the bottom of the output shaft. A fixed disk two 27 is provided at the lower part of the rotating column one 26. A rotating column two 28 is provided below the fixed disk two 27. A fixed disk three 29 is provided below the rotating column two 28, and the bottom of the fixed disk three 29 is fixed at the inner bottom of the stirring chamber 5. A number of tracks 30 are provided between the fixed disk one 25 and the fixed disk two 27 and between the fixed disk two 27 and the fixed disk three 29 on the outer side of the rotating column. Sliders 31 that are matched with the tracks 30 are provided on the tracks 30. T-shaped lifting plates 32 are provided on the sides of the sliders 31 away from the tracks 30. L-shaped seats 33 are provided at the centers of the tops of the sides of the T-shaped lifting plates 32 close to the rotating column one 26 and the rotating column two 28. Limit slide bars 34 are provided on the L-shaped seats 33. Guide grooves 35 are provided on the surfaces of the rotating column one 26 and the rotating column two 28, and the inner ends of the limit slide bars 34 are located in the guide grooves 35. A number of air holes 36 are provided on the T-shaped lifting plates 32.

[0045] A stirring and aeration mechanism is arranged in the stirring chamber 5. After being driven by the stirring and aeration mechanism, the fluid flow rate inside will be increased, and the flocculation effect will be enhanced. Among them, after multiple rotating columns rotate, the T-shaped lifting plates 32 are driven to move up and down through the guide grooves 35 on the surfaces of the rotating columns, so that the fluids in the upper and lower regions are driven to penetrate and merge with each other. After the fluid velocity changes, the flocculation effect will change.

[0046] In addition, a baffle 37 is provided at the outlet end of the outer flow channel pipe 12. The expansion mechanism 14 includes a micro driver 38 which is fixed at the center inside of the baffle 37. On the other side of the micro driver 38, there is a threaded rod 39 which passes through the center position inside the inner flow channel pipe 13. A matching second sleeve block 40 is sleeved on the side of the threaded rod 39 far from the micro driver 38. A hollow cylinder 41 is sleeved on the side of the threaded rod 39 close to the micro driver 38. One side of the hollow cylinder 41 is fixed on the side of the micro driver 38. First sleeve blocks 42 are sleeved on both outer sides of the hollow cylinder 41. A number of first support blocks 43 are provided on the outer sides of the first sleeve blocks 42. A set of first driving blocks 44 are provided on each of the first support blocks 43. A number of second support blocks 45 are provided on the outer side of the second sleeve block 40. A set of second driving blocks 46 are provided on each of the second support blocks 45. Scrapers 47 are connected to the outer sides of the second driving blocks 46 and the first driving blocks 44. The inner flow channel pipe 13 is arranged as a corrugated pipe, and the outer flow channel pipe 12 is arranged as a stainless steel conduit. A filler is provided between the inner wall of the outer flow channel pipe 12 and the outer wall of the inner flow channel pipe 13. The filler includes sponge, elastic member, rubber foam, etc.; the baffle 37 is arranged as a stainless steel filter plate.

[0047] The pipe body on the releaser 8 is arranged in a double-pipe structure. The outer pipe is a hard pipe and the inner pipe is a flexible pipe. When the expansion mechanism 14 in the inner pipe expands around, it will support the inner pipe to expand outwards against the outer pipe, making the inner diameter of the inner pipe larger and increasing the internal fluid volume. At the same time, a rotary driver can be provided at the end of the micro driver 38. The rotary driver can be arranged outside the baffle 37 of the outer flow channel pipe 12. A waterproof housing can be arranged outside the rotary driver. The whole expansion mechanism 14 is driven by this rotary driver to rotate inside the inner flow channel pipe 13, so that the expanded scrapers 47 rotate along the inner wall of the inner flow channel pipe 13. During the rotation, the internal fluid will be driven to roll, and the adhesions adhering to its inner wall will be scraped off, effectively avoiding the blockage phenomenon.

[0048] Meanwhile, the slag scraper 15 includes a driving motor 48. A main sprocket 49 is connected to the driving motor 48. A first chain 50 is provided on the main sprocket 49. The other side of the first chain 50 is wound around a first secondary sprocket 51. A first shaft rod 52 is inserted through the middle of the first secondary sprocket 51. A second secondary sprocket 53 is provided at the other end of the first shaft rod 52. A second shaft rod 54 is inserted through the middle of the second secondary sprocket 53. A third secondary sprocket 55 is provided at the other end of the second shaft rod 54. A second chain 56 is provided on the third secondary sprocket 55. The other side of the second chain 56 is wound around a fourth secondary sprocket 57. A third shaft rod 58 is inserted through the middle of the fourth secondary sprocket 57. A fifth secondary sprocket 59 is provided on the other side of the third shaft rod 58. The fifth secondary sprocket 59 is connected to the third secondary sprocket 55 through a third chain 60. A plurality of slag scraping plates 61 are provided between the upper and lower sides of the second chain 56 and the third chain 60. Support seats 62 are provided at both ends of the second shaft rod 54 and the third shaft rod 58. The support seats 62 are fixed on the air flotation machine main body 1. The driving motor 48 is connected to the air flotation machine main body 1 through a support seat 63. The slag scraping and discharging direction of the slag scraper 15 is reverse to the sewage flow direction. The slag collection tank is arranged at the water inlet end.

[0049] The slag scraper 15 is realized by the reverse concentration slag scraping and discharging method. The slag scraping and discharging direction is reverse to the sewage flow direction. The slag scraping plates are arranged on the entire pool surface. The number of slag scraping plates is large, about 3-5 times that of the traditional air flotation slag scraping plates. The slag scraping and discharging efficiency is high. The slag collection tank is arranged at the water inlet end. The floating slag generated by air flotation is scraped off nearby, and the travel of the floating slag on the surface of the air flotation pool is the shortest; the floating slag is concentrated at the water inlet end, where the amount of microbubbles released by the dissolved air water is the largest, which can continuously provide buoyancy for the floating slag to ensure that the floating slag will not be broken and settled due to the disturbance of the slag scraping plate, affecting the air flotation effect; when scraping and discharging the slag, the clear liquid can flow back to the air flotation pool by itself through the clear liquid return groove on the slag scraping plate under the action of gravity. The moisture content of the scraped floating slag is low, and the floating slag concentration effect is good, reducing the volume of the floating slag and the subsequent floating slag treatment difficulty and treatment cost; among them, the slag scraping plate is provided with a clear liquid return groove.

[0050] The detailed usage method and function of this embodiment:

[0051] The air sent by the air compressor 2 to the air tank is brought into the dissolved air tank 3 through the jet device and is forced to dissolve in water under a pressure of 0.35 Mpa to form dissolved air water, which is sent to the air flotation pool. In the case of sudden release, the air dissolved in the water precipitates to form a large number of microbubble groups. The sewage raw water added with flocculant is fully flocculated by stirring. The flocculated suspended matter in the sewage is fully contacted with the microbubble groups and adsorbed in the flocculated suspended matter during the slow rising process, reducing its density and floating to the water surface to achieve the purpose of removing SS and COD.

[0052] After the water body enters the mixing chamber 5, the driving motor 24 operates, and the motor 24 drives the first rotating column 26 to rotate. The second rotating column 28 rotates along with it. After the first rotating column 26 and the second rotating column 28 rotate together, the guiding grooves 35 on the surface drive the internally engaged limiting slide rods 34 to slide within the guiding grooves 35. Since the limiting slide rods 34 are fixed on the T-shaped lifting plate 32, and the T-shaped lifting plate 32 is clamped on the longitudinally arranged track 30 through the sliders 31, under the limitation of the track 30, the T-shaped lifting plate 32 is always kept moving up and down. When the T-shaped lifting plate 32 moves up and down, it will mix the water bodies in the upper and lower areas. The velocity of the fluid increases with the up and down movement. Compared with the traditional horizontal rotational movement, the longitudinal lifting movement can reduce the trajectory distance, so that the reaction effect is more sufficient with the change of the fluid velocity and the trajectory distance. After the mixed water body enters the air release chamber 6, the formed dissolved air water is sent into the release device 8. During the release process, the micro driver 38 is driven to operate, and the threaded rod 39 is driven to rotate by the micro driver 38. The second sleeve 40 on the threaded rod 39 will move left and right along the thread structure on the surface of the threaded rod 39. During the movement, after the angle of the driving block two 46 changes, it will push the scraping plate 47 outwards. The scraping plate 47 will support the inner wall of the inner flow channel pipe 13 and push the inner flow channel pipe 13 outwards. The inner diameter of the inner flow channel pipe 13 will increase. After the pressure relief valve is opened, the dissolved air water is released to form fine bubbles. At this time, the flocculated suspended solids in the sewage will come into full contact with the micro bubbles and be adsorbed in the well-flocculated suspended solids during the slow upward movement. Then, the slag scraper 15 scrapes off the generated floating slag.

[0053] Through the above specific embodiments, those skilled in the technical field can easily implement the present invention. However, it should be understood that the present invention is not limited to the above specific embodiments. On the basis of the disclosed embodiments, those skilled in the technical field can arbitrarily combine different technical features to implement different technical solutions.

Claims

1. A micro-nano high-speed horizontal flow air flotation machine, comprising an air flotation machine body (1), an air compressor (2), an air dissolving tank (3) and a water pump (4), characterized in that: The air flotation machine body (1) is provided with a stirring chamber (5), a gas release chamber (6) and a reaction zone (7). The stirring chamber (5) is provided with a stirring aeration mechanism. The gas release chamber (6) is provided with a releaser (8). The releaser (8) is connected to the gas dissolving tank (3) through a pipeline (9). The releaser (8) comprises a container water inlet (10) and a plurality of pipe bodies (11). The pipe bodies (11) comprise an outer flow channel pipe (12) and an inner flow channel pipe (13). An expansion mechanism (14) is provided in the inner flow channel pipe (13). The expansion mechanism (14) is connected to the outer flow channel pipe (12). A scraper (15) is provided on the upper part of a side of the reaction zone (7) away from the gas release chamber (6). A scraper (15) is provided on the lower right side of the scraper (15). A slag collecting tank (16) is provided; a water outlet (17) is provided on one side of the slag collecting tank (16) of the air flotation machine body (1); a raw water inlet (18) is provided on the lower part of the air flotation machine body (1) away from the water outlet (17); a plurality of emptying ports (19) are provided at the bottom of the air flotation machine body (1); a cyclone mixer (20) is provided on the outer side of the air flotation machine body (1); one end of a pipeline on the cyclone mixer (20) is connected to the air flotation machine body (1); the air compressor (2) is connected to the air dissolving tank (3) via an air introduction pipe (21); the air dissolving tank (3) is connected to the water pump (4) via a first pipeline (22); the water pump (4) is connected to the air flotation machine body (1) via a second pipeline (23); The stirring aeration mechanism comprises a motor (24), the motor (24) being mounted on one side of the top of the air flotation machine body (1), the motor (24) being provided with a fixing plate 1 (25) at the bottom, the fixing plate 1 (25) being fixed on the top of the stirring chamber (5), the motor (24) being provided with an output shaft at the bottom, the output shaft passing through the air flotation machine body (1) and the fixing plate 1 (25), the output shaft being provided with a rotating column 1 (26) at the bottom, the fixing plate 2 (27) being provided at the bottom of the fixing plate 2 (27), the fixing plate 2 (28) being provided at the bottom of the fixing plate 2 (28), the fixing plate 3 (29) being provided at the bottom of the fixing plate 3 (29), the fixing plate 1 (25) and the fixing plate 1 (28) being fixed to the bottom of the stirring chamber (5), A plurality of tracks (30) are provided between the second fixed plate (27) and between the second fixed plate (27) and the third fixed plate (29) at the outer side of the rotating column. A matching slider (31) is provided on the track (30). A T-shaped lifting plate (32) is provided on the side of the slider (31) away from the track (30). An L-shaped seat (33) is provided at the top center of the side of the T-shaped lifting plate (32) close to the first rotating column (26) and the second rotating column (28). A limiting slide bar (34) is provided on the L-shaped seat (33). A guide groove (35) is provided on the surface of the first rotating column (26) and the second rotating column (28). The inner side end of the limiting slide bar (34) is located in the guide groove (35). A plurality of aeration holes (36) are provided on the T-shaped lifting plate (32). The outlet end of the outer flow channel tube (12) is provided with a baffle (37), and the expansion mechanism (14) includes a micro-actuator (38), the micro-actuator (38) is fixed at the inner center of the baffle (37), and a threaded rod (39) is provided on the other side of the micro-actuator (38), and the threaded rod (39) crosses the inner center of the inner flow channel tube (13), and a matching sleeve block (40) is sleeved on the side of the threaded rod (39) away from the micro-actuator (38), and a hollow cylinder (41) is sleeved on the side of the threaded rod (39) close to the micro-actuator (38), and one side of the hollow cylinder (41) is fixed to the side of the micro-actuator (38), and both sides of the outer side of the hollow cylinder (41) are The sleeve is provided with a sleeve block 1 (42), and a plurality of support blocks 1 (43) are provided on the outer side of the sleeve block 1 (42), and a group of driving blocks 1 (44) are provided on the support blocks 1 (43); a plurality of support blocks 2 (45) are provided on the outer side of the sleeve block 2 (40), and a group of driving blocks 2 (46) are provided on the support blocks 2 (45), and the outer sides of the driving blocks 2 (46) and the driving blocks 1 (44) are connected with scrapers (47); the inner flow channel tube (13) is provided as a corrugated tube, and the outer flow channel tube (12) is provided as a stainless steel conduit; a filler is provided between the inner wall of the outer flow channel tube (12) and the outer wall of the inner flow channel tube (13), and the filler includes a sponge, an elastic member, a rubber foam, etc.; and the baffle (37) is provided as a stainless steel filter plate.

2. A micro-nano high-speed advection air flotation machine according to claim 1, characterized in that: An air tank is provided between the air compressor (2) and the air dissolving tank (3); the air compressor (2) is connected to the air tank via a first pipe, and the air tank is connected to the air dissolving tank (3) via a second pipe.

3. A micro-nano high-speed advection air flotation machine according to claim 1, characterized in that: The scraper (15) comprises a driving motor (48), the driving motor (48) is connected to a main sprocket (49), a chain (50) is provided on the main sprocket (49), the other side of the chain (50) is wound around a secondary sprocket (51), a shaft (52) is inserted through the middle of the secondary sprocket (51), a secondary sprocket (53) is provided at the other end of the shaft (52), a shaft (54) is inserted through the middle of the secondary sprocket (53), a secondary sprocket (53) is provided at the other end of the shaft (54), Sprocket three (55), chain two (56) is arranged on the secondary sprocket three (55), the other side of chain two (56) is wound around secondary sprocket four (57), a shaft rod three (58) is inserted in the middle of the secondary sprocket four (57), the other side of the shaft rod three (58) is provided with secondary sprocket five (59), the secondary sprocket five (59) is connected to the secondary sprocket three (55) through chain three (60), and a plurality of scraper plates (61) are arranged between the upper and lower parts of chain two (56) and chain three (60).

4. A micro-nano high-speed advection air flotation machine according to claim 3, characterized in that: Both ends of the second shaft (54) and the third shaft (58) are provided with a support seat (62), the support seat (62) is fixed on the air flotation machine body (1), and the drive motor (48) is connected to the air flotation machine body (1) via the support seat (63); The scraping and discharging direction of the scraper (15) is opposite to the flow direction of sewage, and the slag collecting tank is arranged at the water inlet end.

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