A vertical air flotation machine

Abstract

This invention provides a vertical air flotation machine, including a cylinder, a wastewater input component, an aerated water input component, a clean water discharge component, and a scum scraping mechanism. The wastewater input component is used to input wastewater into the bottom of the cylinder, the aerated water input component is used to input aerated water into the bottom of the cylinder, the clean water discharge component is used to discharge clean water from the cylinder, and the scum scraping mechanism is used to scrape away scum from the cylinder and discharge it out of the cylinder. The scum scraping mechanism includes a scraper plate, a scum discharge component, and a drive component. This invention drives the scraper plate to rotate via the drive component, concentrating the scum floating on the water surface inside the cylinder to the center of the scraper plate, and then discharging the scum from this point to the outside of the cylinder via the scum discharge component. In this process, the scraper plate mainly rotates, while the scum moves roughly radially along the cylinder, covering a short distance. Therefore, the air bubbles supporting the scum are less likely to break, allowing more scum to be concentrated and transported to the outside of the cylinder before settling, thus improving the scum scraping efficiency.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment equipment technology, specifically to a vertical air flotation machine. Background Technology

[0002] The air flotation machine uses air to adhere to the scum in the form of highly dispersed tiny bubbles, creating a state where the density is less than that of water. The buoyancy then lifts the scum to the water surface, thus achieving solid-liquid separation.

[0003] In existing technologies, a reciprocating scraper is typically used to remove scum floating on the water surface. However, when the scraper removes scum, some of the scum comes into contact with the scraper first and is pushed. This part of the scum travels the farthest and more air bubbles break during the process of being pushed by the scraper, causing the scum to sink again, thus reducing the scraping efficiency. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the present invention provides a vertical air flotation machine, which can solve or at least alleviate one or more of the above-mentioned problems and other problems existing in the prior art.

[0005] This invention provides a vertical air flotation machine, comprising:

[0006] A cylindrical body, wherein the upper end of the cylindrical body is open and the lower end is sealed;

[0007] Wastewater inlet assembly for introducing wastewater into the bottom of the cylinder;

[0008] A sparkling water inlet assembly is used to inlet sparkling water into the bottom of the cylinder.

[0009] A clean water discharge assembly is used to discharge clean water from the cylinder; and

[0010] A slag scraping mechanism, located in the upper part of the cylinder, is used to scrape off the slag inside the cylinder and discharge it from the cylinder.

[0011] The slag scraping mechanism includes:

[0012] The scraper plate has an Archimedean spiral shape when projected onto a horizontal plane. The scraper plate extends downward and is rotatably disposed inside the cylinder with the axis of the cylinder as its center line. The lower end of the scraper plate is in contact with the water surface inside the cylinder.

[0013] A scum discharge assembly for collecting scum accumulated in the middle of the scraper and conveying it to the outside of the cylinder; and

[0014] A drive assembly for driving the scraper blade to rotate.

[0015] Preferably, the scum discharge assembly includes:

[0016] A first collecting cylinder is coaxially rotatably disposed inside the cylinder, and a first collecting window is provided on the side of the first collecting cylinder;

[0017] The second collecting cylinder is coaxially disposed inside the first collecting cylinder and fixedly connected to the first collecting cylinder. A second collecting window is provided on the side of the second collecting cylinder, and the second collecting cylinder can discharge scum to the outside of the cylinder.

[0018] A connecting plate is arranged horizontally, with one end connected to the inner wall of the first collecting cylinder and the other end connected to the outer wall of the second collecting cylinder. The other end of the connecting plate corresponds to the opening of the second collecting window.

[0019] The first baffle is located on one side of the connecting plate and connected to the connecting plate. The two ends of the first baffle are respectively connected to the inner wall of the first collecting cylinder and the outer wall of the second collecting cylinder.

[0020] The second baffle is located on the other side of the connecting plate and connected to the connecting plate. The two ends of the first baffle are respectively connected to the inner wall of the first collecting cylinder and the outer wall of the second collecting cylinder; and

[0021] A guide plate is provided, wherein the guide plate is inclined, and both ends of the guide plate are respectively connected to the inner wall of the first collecting cylinder and the outer wall of the second collecting cylinder, and the upper end of the guide plate is connected to the upper end of the first baffle.

[0022] The first collection window, the guide plate, the first baffle, the connecting plate, and the second baffle are arranged sequentially around the circumference of the second collection cylinder, and the order is opposite to the rotation direction of the scraper plate; one end of the scraper plate near the axis of the cylinder is connected to the outer wall of the first collection cylinder; the first collection window corresponds to the one end of the scraper plate; the first baffle, the second baffle, and the connecting plate form a recessed guide groove.

[0023] Preferably, the scum discharge assembly further includes:

[0024] A scum discharge pipe is fixedly connected to the cylinder body. The upper end of the scum discharge pipe is coaxially opposite to the lower end of the second collection cylinder, and the other end of the scum discharge pipe extends out of the cylinder body.

[0025] Preferably, the wastewater input component includes:

[0026] A sewage inlet pipe is fixedly connected to the cylinder body, one end of the sewage inlet pipe is coaxial with the cylinder body and faces the bottom of the cylinder body, and the other end of the sewage inlet pipe extends outside the cylinder body; and

[0027] The diversion seat is connected to the bottom of the inner side of the cylinder, and its upper end face is a conical surface and is opposite to one end of the sewage inlet pipe.

[0028] Preferably, the sparkling water input component includes:

[0029] A limiting cylinder, open at the top, is fitted over one end of the sewage inlet pipe; and

[0030] A bubble water inlet pipe is fixedly connected to the cylinder body. One end of the bubble water inlet pipe is connected to the bottom of the limiting cylinder, and the other end of the wastewater inlet pipe extends out of the cylinder body.

[0031] Preferably, the sparkling water input component further includes:

[0032] A mixing cylinder, sleeved outside the limiting cylinder, with its lower end connected to the cylinder body; and

[0033] The outer ring is connected to the upper end of the mixing cylinder, and the inner ring is connected to the outer wall of the limiting cylinder.

[0034] An annular mixing cavity is formed between the mixing cylinder, the mating ring, the cylinder body, and the limiting cylinder; the lower end of the limiting cylinder is provided with multiple mixing holes, which are evenly distributed around the axis of the limiting cylinder; the mixing holes are connected to the annular mixing cavity; one end of the bubble water input pipe is connected to the annular mixing cavity.

[0035] Preferably, the clean water discharge component includes:

[0036] An annular discharge pipe with a notch, wherein the inner diameter of the annular discharge pipe is larger than the outer diameter of the upper end of the limiting cylinder; and

[0037] A connecting pipe is fixedly connected to the cylinder body, with one end connected to the annular discharge pipe and the other end extending out of the cylinder body.

[0038] Preferably, the driving component includes:

[0039] Install a crossbeam and connect it to the cylinder;

[0040] The motor is connected to the mounting beam; and

[0041] A rotating shaft is rotatably mounted on the mounting beam, and one end of the rotating shaft is fixedly connected to the second collecting cylinder.

[0042] The motor is used to drive the end of the shaft away from the second collecting cylinder to rotate.

[0043] Preferably, the inner wall of the cylinder is provided with a plurality of nozzles distributed circumferentially; the nozzles are used to spray water onto the water surface of the cylinder; the orientation of the nozzles is perpendicular to the radial direction of the cylinder; the orientation of the plurality of nozzles is opposite to the rotation direction of the scraper.

[0044] Preferably, the cylinder is provided with an annular water storage tank; the nozzle is connected to the annular water storage tank;

[0045] The nozzle includes:

[0046] The first nozzle has one end connected to the annular water storage tank, and the other end has a through outlet on its side wall.

[0047] A truncated cone is coaxially connected to the end of the first nozzle away from the annular water tank, and the diameter of the end of the truncated cone near the first nozzle is smaller than the diameter of the end away from the first nozzle.

[0048] A connecting ring is sleeved on one end of the first nozzle;

[0049] An elastic bellows is fitted over the first nozzle, with one end coaxially connected to the outer ring of the connecting ring.

[0050] The second nozzle is sleeved outside the first nozzle and the truncated cone, and the end of the second nozzle is coaxially connected to the end of the elastic bellows away from the connecting ring.

[0051] The guide block is provided in multiple parts. One end of the guide block is connected to the inner wall of the second nozzle, and the other end of the guide block is slidably engaged with the outer wall of the first nozzle along its axial direction.

[0052] A mating ring, the outer ring of which is connected to the inner wall of the second nozzle, the inner ring of which has a conical surface, the inner diameter of the inner ring of which is closer to the connecting ring is smaller than the inner diameter of the inner ring of which is farther from the connecting ring, and the conical surface on the inner ring of which can fit against the outer wall of the truncated cone; and

[0053] A trigger ring is fitted onto the end of the second nozzle away from the connecting ring, and the trigger ring can abut against the end of the scraper.

[0054] Compared with the prior art, the present invention has the following beneficial effects:

[0055] In this invention, a drive assembly rotates a scraper plate, concentrating scum floating on the water surface inside the cylinder to the center of the scraper plate. The scum is then discharged outside the cylinder by a scum discharge assembly. During this process, the scraper plate rotates primarily, while the scum moves roughly radially along the cylinder, covering a short distance. This prevents the air bubbles supporting the scum from breaking, allowing more scum to be collected and transported outside the cylinder before settling, thus improving scraping efficiency. Attached Figure Description

[0056] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0057] Figure 1 This is a schematic diagram of the structure of a vertical air flotation machine according to one embodiment of the present invention;

[0058] Figure 2 for Figure 1 A three-dimensional view of the slag scraping mechanism;

[0059] Figure 3 for Figure 2 Another 3D image;

[0060] Figure 4 for Figure 1 A three-dimensional view of the lower part of the middle cylinder;

[0061] Figure 5 for Figure 4 Internal diagram of the middle cylinder;

[0062] Figure 6 for Figure 5 A schematic diagram of the internal structure of the wastewater input component and the aerated water input component in operation;

[0063] Figure 7 for Figure 2 Another 3D image;

[0064] Figure 8 for Figure 7 Schematic diagram of the internal structure of the central nozzle;

[0065] Figure 9 for Figure 1 Another schematic diagram;

[0066] Figure 10 for Figure 9 Sectional view of the SS plane (at the slag scraping mechanism).

[0067] Figure label:

[0068] 10. Cylinder body;

[0069] 20. Wastewater inlet assembly; 21. Wastewater inlet pipe; 22. Diversion seat;

[0070] 30. Sparkling water input assembly; 31. Limiting cylinder; 32. Sparkling water input pipe; 33. Mixing cylinder; 34. Sealing ring; 35. Annular mixing chamber; 36. Mixing orifice;

[0071] 40. Clean water discharge assembly; 41. Ring discharge pipe; 42. Connecting pipe;

[0072] 50. Slag scraping mechanism; 51. Slag scraper; 52. Scum discharge assembly; 521. First collection cylinder; 522. First collection window; 523. Second collection cylinder; 524. Second collection window; 525. Connecting plate; 526. First baffle; 527. Second baffle; 528. Guide plate; 529. Scum discharge pipe; 53. Drive assembly; 54. Mounting beam; 55. Motor; 56. Rotating shaft;

[0073] 60. Nozzle; 61. First nozzle; 62. Outlet; 63. Frustum; 64. Connecting ring; 65. Elastic bellows; 66. Second nozzle; 67. Guide block; 68. Mating ring; 69. Trigger ring;

[0074] 70. Circular water storage tank. Detailed Implementation

[0075] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0076] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0077] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0078] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly defined.

[0079] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0080] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0081] See Figures 1 to 10 This embodiment provides a vertical air flotation machine, including a cylinder 10, a wastewater input component 20, an air bubble water input component 30, a clean water discharge component 40, and a sludge scraping mechanism 50.

[0082] The cylinder 10 is open at the top and sealed at the bottom. The wastewater inlet assembly 20 is used to input wastewater into the bottom of the cylinder 10. The aerated water inlet assembly 30 is used to input aerated water into the bottom of the cylinder 10; when the aerated water comes into contact with the wastewater, the bubbles will cause the scum to rise to the surface. The clean water outlet assembly 40 is used to discharge the clean water from the cylinder 10.

[0083] The slag scraping mechanism 50 is located in the upper part of the cylinder 10. The slag scraping mechanism 50 is used to scrape off the floating slag in the cylinder 10 and discharge it from the cylinder 10.

[0084] The slag scraping mechanism 50 includes a slag scraper 51, a slag discharge assembly 52, and a drive assembly 53.

[0085] The scraper 51, projected onto the horizontal plane in an Archimedean spiral shape, extends downwards and is rotatably disposed within the cylinder 10 about its central axis. The lower end of the scraper 51 contacts the water surface inside the cylinder 10. The scum discharge assembly 52 collects the scum accumulated in the middle of the scraper 51 and transports it outside the cylinder 10. The drive assembly 53 drives the scraper 51 to rotate.

[0086] In this embodiment, after the bubble water comes into contact with the sewage, the scum in the sewage floats to the surface. The drive component 53 drives the scraper plate 51 to rotate, concentrating the scum floating on the water surface inside the cylinder 10 to the middle of the scraper plate 51. Then, the scum discharge component 52 discharges the scum from this location to the outside of the cylinder 10. In the above process, the scraper plate 51 mainly rotates, while the scum moves roughly radially along the cylinder 10. The movement distance is short, so the bubbles supporting the scum are less likely to break. This allows more scum to be concentrated and transported to the outside of the cylinder 10 before it sinks, improving the scraping efficiency.

[0087] In one embodiment, the scum discharge assembly 52 includes a first collection cylinder 521, a second collection cylinder 523, a connecting plate 525, a first baffle 526, a second baffle 527, and a guide plate 528.

[0088] A first collecting cylinder 521 is coaxially rotatably disposed inside the cylinder body 10, and a first collecting window 522 is provided on the side of the first collecting cylinder 521. A second collecting cylinder 523 is coaxially disposed inside the first collecting cylinder 521 and is fixedly connected to the first collecting cylinder 521, and a second collecting window 524 is provided on the side of the second collecting cylinder 523. The second collecting cylinder 523 can discharge scum to the outside of the cylinder body 10.

[0089] The connecting plate 525 is arranged horizontally, with one end connected to the inner wall of the first collecting cylinder 521 and the other end connected to the outer wall of the second collecting cylinder 523. The other end of the connecting plate 525 corresponds to the opening of the second collecting window 524. The end of the connecting plate 525 near the opening of the second collecting window 524 is lower than the end connected to the first collecting cylinder 521.

[0090] The first baffle 526 is located on one side of the connecting plate 525 and connected to the connecting plate 525. Both ends of the first baffle 526 are connected to the inner wall of the first collecting cylinder 521 and the outer wall of the second collecting cylinder 523, respectively. The second baffle 527 is located on the other side of the connecting plate 525 and connected to the connecting plate 525. Both ends of the first baffle 526 are connected to the inner wall of the first collecting cylinder 521 and the outer wall of the second collecting cylinder 523, respectively. The guide plate 528 is inclined, with both ends connected to the inner wall of the first collecting cylinder 521 and the outer wall of the second collecting cylinder 523, respectively. The upper end of the guide plate 528 is connected to the upper end of the first baffle 526.

[0091] The first collection window 522, the guide plate 528, the first baffle 526, the connecting plate 525, and the second baffle 527 are arranged sequentially around the circumference of the second collection cylinder 523, and the order is opposite to the rotation direction of the scraper plate 51; the end of the scraper plate 51 near the axis of the cylinder 10 is connected to the outer wall of the first collection cylinder 521; the first collection window 522 corresponds to one end of the scraper plate 51; the first baffle 526, the second baffle 527, and the connecting plate 525 form a recessed guide groove.

[0092] In this embodiment, the scraper plate 51 rotates, and the first collection cylinder 521 and the second collection cylinder 523 connected to the scraper plate 51 rotate synchronously. The rotation of the scraper plate 51 carries the scum on the water surface to the first collection window 522. The water surface height is higher than the lower end of the first collection window 522. Therefore, the scum can pass through the first collection window 522 and move in the space between the first collection cylinder 521 and the second collection cylinder 523. Then, the scum enters the guide channel along the guide plate 528. The scum in the guide channel flows into the second collection cylinder 523 through the second collection window 524 and is transported to the outside of the cylinder 10.

[0093] In one embodiment, the scum discharge assembly 52 further includes a scum discharge pipe 529.

[0094] The scum discharge pipe 529 is fixedly connected to the cylinder 10. The upper end of the scum discharge pipe 529 is coaxially aligned with the lower end of the second collecting cylinder 523, so that the upper end of the scum discharge pipe 529 can receive the scum flowing downward from the second collecting cylinder 523. The other end of the scum discharge pipe 529 extends outside the cylinder 10. Specifically, the upper end of the scum discharge pipe 529 is inserted into the lower end of the second collecting cylinder 523, and a mating ring is connected inside the lower end of the second collecting cylinder 523. The outer circumference of the mating ring is connected to the inner circumferential wall of the second collecting cylinder 523, and the inner circumference of the mating ring can be clearance-fitted with the upper end of the scum discharge pipe 529. The mating ring can also dynamically seal with the scum discharge pipe 529.

[0095] In one embodiment, the wastewater inlet assembly 20 includes a wastewater inlet pipe 21 and a diversion seat 22.

[0096] The sewage inlet pipe 21 is fixedly connected to the cylinder 10. One end of the sewage inlet pipe 21 is coaxial with the cylinder 10 and faces the bottom of the cylinder 10, while the other end of the sewage inlet pipe 21 extends outside the cylinder 10. The diverter seat 22 is connected to the bottom inner side of the cylinder 10, and its upper end face is a conical surface, opposite to one end of the sewage inlet pipe 21. Multiple diverter grooves are also formed on the conical surface of the diverter seat 22, and the diverter grooves are evenly distributed circumferentially around the axis of the cylinder 10.

[0097] In this embodiment, the sewage input pipe 21 inputs sewage, which is evenly diverted at the diversion seat 22, so that the sewage can spread evenly in all directions, thereby better mixing with the bubbles in the input bubble water, and carrying more scum to the water surface.

[0098] In one embodiment, the sparkling water input assembly 30 includes a limiting cylinder 31 and a sparkling water input pipe 32.

[0099] The upper end of the limiting cylinder 31 is open, and the limiting cylinder 31 is sleeved outside one end of the sewage inlet pipe 21. The aerated water inlet pipe 32 is fixedly connected to the cylinder body 10, with one end of the aerated water inlet pipe 32 communicating with the bottom of the limiting cylinder 31, and the other end of the sewage inlet pipe 21 extending outside the cylinder body 10. The inner diameter of the upper end of the limiting cylinder 31 is larger than that of its lower end, so that the aerated water fully combines with the sewage at the lower end of the limiting cylinder 31. As the scum in the sewage floats to the surface, the inner diameter of the limiting cylinder 31 increases, giving the scum more room to move, thus allowing a large amount of scum to float to the surface quickly.

[0100] In this embodiment, the limiting cylinder 31 restricts the range of sewage flowing out of the sewage inlet pipe 21 (increasing the concentration). After the bubble water inlet pipe 32 introduces bubble water into the bottom of the limiting cylinder 31, the high-content bubble water can mix with the sewage containing a high content of scum, thereby bringing a large amount of scum to the water surface. In addition, the design of the limiting cylinder 31 provides a uniform mixing environment for the bubble water and sewage with a decreasing hydraulic gradient.

[0101] In one embodiment, the sparkling water inlet assembly 30 further includes a mixing cylinder 33 and a sealing ring 34.

[0102] A mixing cylinder 33 is fitted over a limiting cylinder 31, with its lower end connected to the cylinder body 10. The outer ring of a sealing ring 34 is connected to the upper end of the mixing cylinder 33 (using bolted flanges), and its inner ring is connected to the outer wall of the limiting cylinder 31 (using welding). An annular mixing cavity 35 is formed between the mixing cylinder 33, the sealing ring 34, the cylinder body 10, and the limiting cylinder 31. Multiple mixing holes 36 are provided at the lower end of the limiting cylinder 31, and these holes are evenly distributed circumferentially around the axis of the limiting cylinder 31. The mixing holes 36 communicate with the annular mixing cavity 35. One end of the aerated water input pipe 32 is connected to the annular mixing cavity 35.

[0103] In this embodiment, after the bubble water is fed into the annular mixing chamber 35 through the bubble input pipe, the bubble water enters the limiting cylinder 31 from all sides through the circumferentially distributed mixing holes 36, thereby making the bubble water and sewage mix more evenly, and thus increasing the amount of scum floating.

[0104] In one embodiment, the clean water discharge assembly 40 includes an annular discharge pipe 41 and a connecting pipe 42.

[0105] A notch is provided on the annular discharge pipe 41. This notch can be obtained by disconnecting the annular discharge pipe 41 according to this design, or by creating an opening. See [reference needed]. Figure 5 The left side of the annular discharge pipe 41 is disconnected to obtain a notch, and the two sides of the notch are the openings of the annular discharge pipe 41. The inner circle size of the annular discharge pipe 41 is larger than the upper outer diameter of the limiting cylinder 31. The connecting pipe 42 is fixedly connected to the cylinder 10, one end of the connecting pipe 42 is connected to the annular discharge pipe 41, and the other end of the connecting pipe 42 extends to the outside of the cylinder 10.

[0106] In this embodiment, the scum floats upward from the upper end of the limiting cylinder 31 and is eventually collected and discharged by the scraper plate 51 towards the middle of the cylinder 10. The size of the annular discharge pipe 41 is larger than the size of the upper end of the limiting cylinder 31, so the water vertical in the annular discharge pipe 41 is clean water, which can be discharged through the notch on the annular discharge pipe 41.

[0107] In one embodiment, the drive assembly 53 includes a mounting beam 54, a motor 55, and a shaft 56.

[0108] The mounting beam 54 is connected to the cylinder 10. The motor 55 is connected to the mounting beam 54. The rotating shaft 56 is rotatably mounted on the mounting beam 54, and one end of the rotating shaft 56 is fixedly connected to the second collecting cylinder 523. For details, see [link to details]. Figure 10 The second collecting cylinder 523 has a circular top plate 57 connected to its top, and the lower end of the rotating shaft 56 is fixedly connected to the circular top plate 57. Additionally, a slag pusher plate 58 can be installed on both the first collecting cylinder 521 and the second collecting cylinder 523. The rotating shaft 56 is a hollow structure, with an inner shaft 59 rotatably mounted inside. The upper end of the inner shaft 59 is rotatably connected to the mounting beam 54, and the lower end of the inner shaft 59 is connected to a support arm 80 behind the rotating shaft 56. The support arm 80 is rotatably connected to the upper end of the slag pusher plate 58. A bevel gear is coaxially connected to the upper end of the rotating shaft 56 and the upper end of the inner shaft 59. A bevel gear is connected to the output end of the motor 55. The bevel gear on the output end of the motor 55 meshes with the two bevel gears on the rotating shaft 56 and the inner shaft 59 to achieve opposite rotation of the rotating shaft 56 and the inner shaft 59. This results in the slag pusher 58 rotating in the opposite direction to the slag scraper 51. When the slag scraper 51 gathers the scum towards the center, the scum overlaps and becomes uneven. The lower end of the slag pusher 58 passes over the upper end of the scum, pushing the contacting scum through the guide plate 528 and onto the connecting plate 525. The upper end of the gathered scum is scraped off by the slag pusher 58. The remaining scum has a uniform thickness and moderate weight. When the guide plate 528 passes by, it can stably guide this part of the scum onto the connecting plate 525.

[0109] In one embodiment, a plurality of nozzles 60 are arranged circumferentially on the inner wall of the cylinder 10. The nozzles 60 are used to spray water onto the water surface of the cylinder 10. The water sprayed from the nozzles 60 has a low flow velocity, typically 0.1 m / s. The nozzles 60 are oriented perpendicular to the radial direction of the cylinder 10, and their axes can also be approximately perpendicular to the radial direction of the cylinder 10, but not necessarily perpendicular, as long as the water sprayed from the nozzles 60 allows the scum on the water surface near the inner wall of the cylinder 10 to rotate within the cylinder 10, and the direction of rotation is opposite to the direction of rotation of the scraper plate 51. The orientation of the plurality of nozzles 60 is opposite to the direction of rotation of the scraper plate 51.

[0110] In this embodiment, the nozzle 60 sprays water onto the water surface inside the cylinder 10, thereby causing the scum on the part of the water surface inside the cylinder 10 that is close to the inner wall of the cylinder 10 to be moved on the water surface by the water separated by the nozzle 60, and the direction of movement is opposite to the direction of movement of the scraper 51. On the one hand, there is a certain distance between the end of the scraper 51 and the inner wall of the cylinder 10. The nozzle 60 sprays water at this location to prevent scum from accumulating there and to avoid the scum affecting the rotation of the scraper 51. On the other hand, the air bubbles that lift the scum are constantly bursting. The water sprayed by the nozzle 60 causes the scum in the areas that the scraper 51 cannot reach to rotate in the opposite direction. This rotation, combined with the rotation of the scraper 51, allows the scum to move quickly from the outer end of the scraper 51 towards the center. Before the air bubbles that lift the scum burst, the scum can be sent away from the cylinder 10 more quickly, thereby improving the scum removal efficiency. Moreover, the water sprayed by the nozzle 60 causes the scum to move slowly, causing the scum on the water surface inside the cylinder 10 to clump together. Even if some air bubbles burst, there are enough air bubbles to lift the clump of scum, preventing the scum from sinking due to the bursting of air bubbles and avoiding the need for some scum to be lifted by air bubbles again before being scraped, thus improving the scum removal efficiency.

[0111] In one embodiment, an annular water storage tank 70 is provided on the cylinder 10; the nozzle 60 is connected to the annular water storage tank 70. The water in the annular water storage tank 70 can be supplied from the outside, and can also be discharged to the outside of the cylinder 10 using the connecting pipe 42.

[0112] The nozzle 60 includes a first nozzle 61, a truncated cone 63, a connecting ring 64, an elastic bellows 65, a second nozzle 66, a guide block 67, a mating ring 68, and a trigger ring 69.

[0113] One end of the first nozzle 61 is connected to the annular water storage tank 70, and a through outlet 62 is provided on the side wall of the other end of the first nozzle 61. A truncated cone 63 is coaxially connected to the end of the first nozzle 61 away from the annular water storage tank 70, and the diameter of the end of the truncated cone 63 near the first nozzle 61 is smaller than the diameter of the end away from the first nozzle 61. A connecting ring 64 is fitted onto one end of the first nozzle 61.

[0114] A flexible bellows 65 is fitted over the first nozzle 61, with one end coaxially connected to the outer ring of the connecting ring 64. A second nozzle 66 is fitted over the first nozzle 61 and the truncated cone 63, with its end coaxially connected to the end of the flexible bellows 65 away from the connecting ring 64. Multiple guide blocks 67 are provided, one end of which is connected to the inner wall of the second nozzle 66, and the other end of which slides axially with the outer wall of the first nozzle 61. A mating ring 68 is provided, with its outer ring connected to the inner wall of the second nozzle 66. The inner ring of the mating ring 68 has a conical surface, and the inner diameter of the inner ring of the mating ring 68 near the connecting ring 64 is smaller than the inner diameter of the end away from the connecting ring 64. The conical surface on the inner ring of the mating ring 68 can fit against the outer wall of the truncated cone 63. The trigger ring 69 is sleeved on the end of the second nozzle 66 away from the connecting ring 64, and the outer ring of the trigger ring 69 can abut against the end of the scraper 51.

[0115] In this embodiment, the annular water tank 70 supplies water to the first nozzle 61, and the water in the first nozzle 61 flows into the second nozzle 66 through the outlet 62. Due to the presence of the connecting ring 64 and the elastic bellows 65, the water in the second nozzle 66 will not leak from the end of the second nozzle 66 near the annular water tank 70.

[0116] When the end of the scraper 51 rotates to the end of the second nozzle 66 and abuts against the trigger ring 69, the scraper 51 drives the second nozzle 66 to slide on the first nozzle 61, thereby causing the mating ring 68 inside the second nozzle 66 to slide towards the connecting ring 64, thus creating a gap between the mating ring 68 and the truncated cone 63. Water in the second nozzle 66 flows out from this gap, thereby pushing the scum on the water surface inside the cylinder 10.

[0117] As the scraper plate 51 rotates further, the trigger ring 69 moves a certain distance on the first nozzle 61 along with the second nozzle 66. Then, the trigger ring 69 disengages from the scraper plate 51. At this time, the thrust of the water in the first nozzle 61 acts on the mating ring 68, thereby causing the second nozzle 66 to be driven away from the connecting ring 64 until the mating ring 68 and the truncated cone 63 re-fit, and the water in the second nozzle 66 no longer flows out.

[0118] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0119] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A vertical air flotation machine, characterized in that, include: The cylinder (10) has an open upper end and a sealed lower end; Wastewater inlet assembly (20) for inletting wastewater into the bottom of the cylinder (10); A sparkling water input component (30) is used to input sparkling water into the bottom of the cylinder (10); A clean water discharge assembly (40) is used to discharge clean water from the cylinder (10); as well as The slag scraping mechanism (50) is located in the upper part of the cylinder (10) and is used to scrape off the slag inside the cylinder (10) and discharge it from the cylinder (10). The slag scraping mechanism (50) includes: The scraper (51) is projected on the horizontal plane in the shape of an Archimedean spiral. The scraper (51) extends downward and is rotated inside the cylinder (10) with the axis of the cylinder (10) as the center line. The lower end of the scraper (51) is in contact with the water surface inside the cylinder (10). A scum discharge assembly (52) is used to collect scum accumulated in the middle of the scraper (51) and convey it to the outside of the cylinder (10); and A drive assembly (53) is used to drive the scraper (51) to rotate; The scum discharge assembly (52) includes: The first collection cylinder (521) is coaxially rotatably disposed inside the cylinder body (10), and the first collection window (522) is provided on the side of the first collection cylinder (521). The second collecting cylinder (523) is coaxially disposed inside the first collecting cylinder (521) and fixedly connected to the first collecting cylinder (521). The second collecting cylinder (523) has a second collecting window (524) on its side. The second collecting cylinder (523) can discharge scum to the outside of the cylinder body (10). The connecting plate (525) is arranged horizontally, with one end connected to the inner wall of the first collecting cylinder (521) and the other end connected to the outer wall of the second collecting cylinder (523). The other end of the connecting plate (525) corresponds to the opening of the second collecting window (524). The first baffle (526) is located on one side of the connecting plate (525) and connected to the connecting plate (525). The two ends of the first baffle (526) are respectively connected to the inner wall of the first collecting cylinder (521) and the outer wall of the second collecting cylinder (523). The second baffle (527) is located on the other side of the connecting plate (525) and connected to the connecting plate (525). The two ends of the first baffle (526) are respectively connected to the inner wall of the first collecting cylinder (521) and the outer wall of the second collecting cylinder (523); and A guide plate (528) is inclined and its two ends are respectively connected to the inner wall of the first collecting cylinder (521) and the outer wall of the second collecting cylinder (523). The upper end of the guide plate (528) is connected to the upper end of the first baffle (526). The first collection window (522), the guide plate (528), the first baffle (526), ​​the connecting plate (525), and the second baffle (527) are arranged sequentially around the second collection cylinder (523) in the circumferential direction and in the opposite direction to the rotation of the scraper plate (51); the end of the scraper plate (51) near the axis of the cylinder (10) is connected to the outer wall of the first collection cylinder (521); the first collection window (522) corresponds to the end of the scraper plate (51); the first baffle (526), ​​the second baffle (527), and the connecting plate (525) form a recessed guide groove.

2. A vertical air flotation machine as described in claim 1, characterized in that, The scum discharge assembly (52) also includes: The scum discharge pipe (529) is fixedly connected to the cylinder (10). The upper end of the scum discharge pipe (529) is coaxially opposite to the lower end of the second collection cylinder (523). The other end of the scum discharge pipe (529) extends to the outside of the cylinder (10).

3. A vertical air flotation machine as described in claim 2, characterized in that, The wastewater input component (20) includes: A sewage inlet pipe (21) is fixedly connected to the cylinder (10). One end of the sewage inlet pipe (21) is coaxial with the cylinder (10) and faces the bottom of the cylinder (10). The other end of the sewage inlet pipe (21) extends outside the cylinder (10). The diversion seat (22) is connected to the bottom of the inner side of the cylinder (10), and its upper end face is a conical surface and is opposite to one end of the sewage input pipe (21).

4. A vertical air flotation machine as described in claim 3, characterized in that, The sparkling water input component (30) includes: A limiting cylinder (31), open at the upper end, is fitted over one end of the sewage inlet pipe (21); and A bubble water inlet pipe (32) is fixedly connected to the cylinder (10). One end of the bubble water inlet pipe (32) is connected to the bottom of the limiting cylinder (31), and the other end of the sewage inlet pipe (21) extends to the outside of the cylinder (10).

5. A vertical air flotation machine as described in claim 4, characterized in that, The sparkling water input component (30) also includes: A mixing cylinder (33) is fitted outside the limiting cylinder (31), and the lower end of the mixing cylinder (33) is connected to the cylinder body (10); and A sealing ring (34) has its outer ring connected to the upper end of the mixing cylinder (33) and its inner ring connected to the outer wall of the limiting cylinder (31). An annular mixing cavity (35) is formed between the mixing cylinder (33), the sealing ring (34), the cylinder body (10), and the limiting cylinder (31); the lower end of the limiting cylinder (31) is provided with a plurality of mixing holes (36), and the plurality of mixing holes (36) are evenly distributed around the axis of the limiting cylinder (31); the mixing holes (36) are connected to the annular mixing cavity (35); one end of the bubble water input pipe (32) is connected to the annular mixing cavity (35).

6. A vertical air flotation machine as described in claim 5, characterized in that, The clean water discharge component (40) includes: An annular discharge pipe (41) with a notch is provided thereon, wherein the inner diameter of the annular discharge pipe (41) is larger than the outer diameter of the upper end of the limiting cylinder (31); and The connecting pipe (42) is fixedly connected to the cylinder (10), with one end connected to the annular discharge pipe (41) and the other end extending to the outside of the cylinder (10).

7. A vertical air flotation machine as described in claim 6, characterized in that, The driving component (53) includes: Install the crossbeam (54) and connect it to the cylinder (10); The motor (55) is connected to the mounting beam (54); and A rotating shaft (56) is rotatably mounted on the mounting beam (54), and one end of the rotating shaft (56) is fixedly connected to the second collecting cylinder (523); The motor (55) is used to drive the shaft (56) to rotate away from the end of the second collecting cylinder (523).

8. A vertical air flotation machine as described in any one of claims 1-7, characterized in that, The inner wall of the cylinder (10) is provided with a plurality of nozzles (60) distributed circumferentially; the nozzles (60) are used to spray water onto the water surface of the cylinder (10); the orientation of the nozzles (60) is perpendicular to the radial direction of the cylinder (10); the orientation of the plurality of nozzles (60) is opposite to the rotation direction of the scraper (51).

9. A vertical air flotation machine as described in claim 8, characterized in that, An annular water storage tank (70) is provided on the cylinder (10); the nozzle (60) is connected to the annular water storage tank (70); The nozzle (60) includes: The first nozzle (61) is connected at one end to the annular water storage tank (70), and a through outlet (62) is provided on the side wall of the other end. The truncated cone (63) is coaxially connected to the end of the first nozzle (61) away from the annular water tank (70), and the diameter of the end of the truncated cone (63) near the first nozzle (61) is smaller than the diameter of the end away from the first nozzle (61). A connecting ring (64) is sleeved on one end of the first nozzle (61); The elastic bellows (65) is sleeved outside the first nozzle (61), and one end is coaxially connected to the outer ring of the connecting ring (64); The second nozzle (66) is sleeved outside the first nozzle (61) and the truncated cone (63), and the end of the second nozzle (66) is coaxially connected to the end of the elastic bellows (65) away from the connecting ring (64). A guide block (67) is provided in multiple parts. One end of the guide block (67) is connected to the inner wall of the second nozzle (66), and the other end of the guide block (67) is slidably engaged with the outer wall of the first nozzle (61) along its axial direction. A mating ring (68) is provided, the outer edge of which is connected to the inner wall of the second nozzle (66). The inner ring of the mating ring (68) has a conical surface. The inner diameter of the inner ring of the mating ring (68) near the connecting ring (64) is smaller than the inner diameter of the end away from the connecting ring (64). The conical surface on the inner ring of the mating ring (68) can fit against the outer wall of the truncated cone (63). A trigger ring (69) is fitted around the end of the second nozzle (66) away from the connecting ring (64), and the trigger ring (69) can abut against the end of the scraper (51).

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