An air float

Abstract

The utility model provides a kind of air flotation machine, including air flotation machine body, scrape foam mechanism, support frame, spray pipe, multiple nozzle body, water supply mechanism and rotary drive assembly. The inside of air flotation machine body is divided into separation zone and collection area, and scrape foam mechanism includes rotary drive assembly and two scraper bodies. Support frame is installed on air flotation machine body, spray pipe can be rotated around its own axis and be arranged on support frame, spray pipe is arranged above separation zone, water supply mechanism is used to supply water to spray pipe, and rotary drive assembly is used to drive spray pipe to rotate by certain angle. By design rotatable spray pipe, nozzle body jet direction can be adjusted according to the position of scraper body, so that, it is realized that using a group of nozzle body can clean both sides of scraper body, reduce the use number of pipeline and nozzle body, reduce cost, solve the problem that traditional fixed spray can only clean single side.

Description

Technical Field

[0001] This utility model relates to the technical field of sewage treatment equipment, specifically to an air flotation machine. Background Technology

[0002] A dissolved air flotation (DAF) machine is a wastewater treatment device that uses microbubbles to adhere to suspended particles (scum) in wastewater, making them less dense than water and causing them to float to the surface. The scum is then scraped off by a scraper mechanism. Existing DAF machines suffer from the following problems during long-term operation: after scraping, scum and oil residue easily remain on the scraper surface. If not cleaned promptly, these residues dry and harden, leading to difficulties in subsequent cleaning and incomplete scraping. To solve these problems, a solution using high-pressure water jets from nozzles to directly wash the scraper surface is employed. This method is simple in structure, low in cost, and currently the most widely used solution.

[0003] However, traditional spray cleaning devices typically have fixed spray pipes that cannot be adjusted in angle, allowing cleaning only one side of the scraper. Multiple sets of nozzles are needed on both sides of the scraper to achieve double-sided cleaning, resulting in numerous components, complex piping, and high costs. Therefore, designing a single set of nozzles that can clean both sides of the scraper when it is on its return path is a problem urgently needing to be solved by those skilled in the art. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of this utility model is to provide an air flotation machine to solve or at least alleviate one or more of the above-mentioned technical problems or other problems existing in the prior art.

[0005] To achieve the above objectives, this utility model provides an air flotation machine, including an air flotation machine body having a separation zone and a collection zone; a skimming mechanism including a rotary drive assembly and at least one scraper body, the rotary drive assembly driving the scraper body to rotate to scrape the scum from the separation zone to the collection zone; a support frame disposed on the air flotation machine body; a spray pipe rotatably disposed on the support frame about its own axis, the spray pipe being arranged above the separation zone, the length direction of the spray pipe being parallel to the width direction of the air flotation machine body; a plurality of nozzle bodies spaced apart along the length direction of the spray pipe, the nozzle bodies facing the separation zone, the horizontal height of the lowest position of the nozzle body being higher than the horizontal height of the highest position of the scraper body; a water supply mechanism for supplying water to the spray pipe so that the nozzle bodies spray the scraper body located on the return path; and a rotary drive assembly for driving the spray pipe to rotate at a certain angle.

[0006] Preferably, the support frame includes two baffles arranged parallel to each other on both sides of the separation zone, and the two baffles extend along the length of the air flotation machine body; the spray pipe is rotatably fitted on the two baffles, and the rotation drive assembly is disposed on one of the baffles.

[0007] Preferably, the top of the baffle is recessed downward to form an installation notch for inserting the spray pipe, and the baffle is provided with a mounting seat, the spray pipe being rotatably fitted into two of the mounting seats.

[0008] Preferably, the mounting base includes a detachable upper body and a lower body, the lower body being fixed to the side of the baffle away from the other baffle; a limiting protrusion is provided in the semi-circular groove of the lower body, and two annular limiting grooves are provided on the spray pipe, the two limiting grooves being close to both ends of the spray pipe respectively, and each limiting groove cooperating with the corresponding limiting protrusion.

[0009] Preferably, it also includes two proximity sensors, which are disposed on one of the baffles and respectively arranged on both sides of the spray pipe. The proximity sensors are used to detect the position of the scraper body located on the return path.

[0010] Preferably, the support frame further includes multiple connecting rods, with each end of the connecting rod connected to one of the two baffles.

[0011] Preferably, the nozzle body is a fan-shaped nozzle.

[0012] Preferably, the water supply mechanism includes a water supply pipe, and the spray pipe is rotatably connected to the water supply pipe via a rotary joint.

[0013] The beneficial effects of this utility model are:

[0014] This utility model discloses an air flotation machine that, through the design of a rotatable spray pipe, allows the nozzle body's spray direction to be adjusted according to the position of the scraper body. This enables the cleaning of both sides of the scraper body using only one set of nozzles, reducing the number of pipes and nozzles required, lowering costs, and solving the problem of traditional fixed spray systems only cleaning one side. It also addresses the high cost of using multiple sets of nozzles without requiring significant modifications to the existing equipment. Furthermore, cleaning is completed during the "idle time" of the scraper body's return stroke, achieving non-stop cleaning of the equipment. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the 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.

[0016] Figure 1 This is a schematic diagram of the structure of an air flotation machine provided in an embodiment of the present invention;

[0017] Figure 2 This is a structural diagram showing the structure of the air flotation machine after it has been concealed.

[0018] Figure 3 This is a structural schematic diagram of the support frame;

[0019] Figure 4 for Figure 3 A partial schematic diagram of point A in the middle;

[0020] Figure 5 This is a schematic diagram of the spray pipe structure;

[0021] Figure 6 This is a partial schematic diagram near the closed end of the spray pipe;

[0022] Figure 7 This is a schematic diagram showing the structure before the scraper body reaches the cleaning area.

[0023] Figure 8 A schematic diagram of the structure of the front side of the cleaning scraper body for the nozzle body;

[0024] Figure 9 A schematic diagram of the structure of the nozzle body cleaning scraper body rear side;

[0025] Figure label:

[0026] 10. Air flotation machine body; 11. Separation zone; 12. Collection zone; 20. Scraping mechanism; 21. Rotary drive assembly; 22. Scraper body; 30. Support frame; 31. Baffle; 311. Mounting notch; 32. Mounting seat; 321. Upper seat; 322. Lower seat; 323. Limiting protrusion; 33. Connecting rod; 40. Spray pipe; 41. Annular limiting groove; 50. Nozzle body; 60. Rotary drive assembly; 70. Proximity sensor. Detailed Implementation

[0027] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0028] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0029] 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 this utility model 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 this utility model.

[0030] 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 utility model, "a plurality of" means two or more, unless otherwise explicitly defined.

[0031] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," 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 utility model according to the specific circumstances.

[0032] 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," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates 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 indicates that the first feature is at a lower horizontal level than the second feature.

[0033] like Figure 1-9As shown, in one embodiment of this utility model, an air flotation machine is provided, including an air flotation machine body 10, a skimming mechanism 20, a support frame 30, a spray pipe 40, multiple nozzle bodies 50, a water supply mechanism, and a rotary drive assembly 60. The air flotation machine body 10 is internally divided into a separation zone 11 and a collection zone 12. The separation zone 11 is used for air bubbles to combine with scum and float to the surface, while the collection zone 12 is used to temporarily store the scum scraped off by the scraper body 22. The air flotation machine body 10 is prior art and will not be described in detail in this embodiment. The skimming mechanism 20 includes a rotary drive assembly 21 and two scraper bodies 22. The rotary drive assembly 21 is used to drive the scraper bodies 22 to rotate, so as to scrape the scum in the separation zone 11 to the collection zone 12. The rotary drive assembly 21 adopts an existing sprocket and chain drive structure, and the two ends of the scraper bodies 22 are respectively fixed on two chains.

[0034] A support frame 30 is mounted on the air flotation machine body 10 to provide support for the spray pipe 40. The spray pipe 40 is rotatably mounted on the support frame 30 around its own axis. The spray pipe 40 is arranged above the separation zone 11, and its length direction is parallel to the width direction of the air flotation machine body 10. In this embodiment, there are five nozzle bodies 50, which are arranged at intervals along the length direction of the spray pipe 40. The nozzle bodies 50 face the separation zone 11, and the horizontal height of the lowest position of the nozzle body 50 is higher than the horizontal height of the highest position of the scraper body 22 to avoid the scraper body 22 colliding with the nozzle body 50 during operation. A water supply mechanism is used to supply water to the spray pipe 40 so that the nozzle bodies 50 spray the scraper body 22 located on the return path. The return path is the unloaded running trajectory of the scraper body 22 from the collection zone 12 back to the starting end of the separation zone 11. A rotary drive assembly 60 is used to drive the spray pipe 40 to rotate at a certain angle. The rotary drive assembly 21 adopts an existing reducer structure, which will not be described in detail in this embodiment.

[0035] When the scraper body 22, located on the return path, has not yet moved below the nozzle body 50, the rotary drive assembly 60 drives the spray pipe 40 to rotate, causing the nozzle body 50 to face the front of the scraper body 22 (at this time, the spray angle of the nozzle body 50 is approximately 45° to 60° downwards). The high-pressure water jet sprayed by the nozzle body 50 can directly act on the front of the scraper body 22. As the scraper body 22 moves, after the scraper body 22 passes the nozzle body 50, the rotary drive assembly 60 drives the spray pipe 40 to rotate again, causing the nozzle body 50 to face the rear of the scraper body 22. The high-pressure water jet sprayed by the nozzle body 50 can directly act on the rear of the scraper body 22.

[0036] This embodiment discloses an air flotation machine that, through the design of a rotatable spray pipe 40, allows the nozzle body 50 to be adjusted in spray direction according to the position of the scraper body 22. This enables the cleaning of both sides of the scraper body 22 using only one set of nozzle bodies 50, reducing the number of pipes and nozzle bodies 50 required, lowering costs, and solving the problem that traditional fixed spray systems can only clean one side. It also addresses the high cost of using multiple sets of nozzles without requiring significant modifications to the existing equipment. Furthermore, cleaning is completed during the "idle time" of the scraper body 22's return stroke, achieving non-stop cleaning of the equipment.

[0037] In one embodiment, the support frame 30 includes two baffles 31 arranged parallel to each other on both sides of the separation zone 11, with the two baffles 31 extending along the length of the flotation machine body 10. A spray pipe 40 is rotatably fitted onto the two baffles 31, and a rotary drive assembly 60 is mounted on one of the baffles 31. The baffles 31, extending along the length of the flotation machine body 10, provide stable support for the spray pipe 40 and prevent water splashes generated by high-pressure spraying from overflowing. By directly mounting the rotary drive assembly 60 onto the baffles 31, there is no need to design additional fixing brackets for mounting on the flotation machine body 10, reducing the space occupied.

[0038] In one embodiment, the top of the baffle 31 is recessed downward to form an installation notch 311 for inserting the spray pipe 40. The baffle 31 is provided with mounting seats 32, and the spray pipe 40 is rotatably fitted within the two mounting seats 32. The installation notch 311 at the top of the baffle 31 can directly guide the spray pipe 40 into a preset position, improving assembly efficiency. The rotatable fit between the spray pipe 40 and the mounting seats 32 provides radial support for the spray pipe 40, ensuring smooth rotation and precise spraying position of the nozzle body 50.

[0039] See Figure 3 and Figure 4In one embodiment, the mounting base 32 includes a detachable upper body 321 and a lower body 322, with the lower body 322 fixed to the side of the baffle 31 facing away from the other baffle 31. A limiting protrusion 323 is provided in the semi-circular groove of the lower body 322, and two annular limiting grooves 41 are provided on the spray pipe 40. The two limiting grooves are respectively close to both ends of the spray pipe 40, and each limiting groove cooperates with the corresponding limiting protrusion 323. When the nozzle is blocked or the spray pipe 40 malfunctions, the spray pipe 40 can be removed by disassembling the two upper bodies 321 and disconnecting the connection between the spray pipe 40 and the rotary drive assembly 60, without removing the entire baffle 31, thus improving maintenance convenience. The limiting protrusion 323 of the lower body 322 cooperates with the annular limiting grooves 41 of the spray pipe 40, which on the one hand restricts the axial displacement of the spray pipe 40 (preventing the spray pipe 40 from sliding along its length during rotation, causing the nozzle body 50 to shift position). On the other hand, it can assist the spray pipe 40 in rotating around its own axis, reducing radial sway.

[0040] In one embodiment, the air flotation machine further includes two proximity sensors 70 (which may be infrared sensors). The two proximity sensors 70 are mounted on one of the baffles 31 and are respectively arranged on both sides of the spray pipe 40. The proximity sensors 70 are used to detect the position of the scraper body 22 located on the return path. The two proximity sensors 70 respectively detect the position of the scraper body 22 when it reaches the cleaning area (the area where the nozzle body 50 can spray cleaning material onto the scraper body 22) and the position when the scraper body 22 leaves the cleaning area, thus enabling cleaning to start when the scraper body 22 arrives and stop when it leaves, avoiding water waste caused by traditional fixed-time cleaning.

[0041] The proximity sensor 70 is electrically connected to the solenoid valve (not shown in the attached diagram) and the rotary drive assembly 60 of the water supply mechanism (this structure uses existing technology and will not be described further in this example). See also... Figures 7 to 9 The arrows in the diagram indicate the direction of movement of the scraper body 22. When the scraper body 22 triggers the proximity sensor 70 at the inlet end, the solenoid valve opens, the rotary drive assembly 60 starts, the spray pipe 40 adjusts its angle, and the nozzle body 50 begins spraying. When the scraper body 22 triggers the proximity sensor 70 at the outlet end, the solenoid valve closes, the rotary drive assembly 60 resets, and cleaning stops. Of course, during the movement of the scraper body 22 in the cleaning area, the rotary drive assembly 60 can also adaptively drive the spray pipe 40 to rotate, thereby adjusting the spray angle of the nozzle body 50.

[0042] In one embodiment, the support frame 30 further includes multiple connecting rods 33, with two baffles 31 fixedly connected to both ends of the connecting rods 33 respectively, forming a frame structure and improving its strength.

[0043] In one embodiment, the nozzle body 50 adopts a fan-shaped nozzle, and the water flow sprayed from the fan-shaped nozzle is in a fan shape. Compared with the traditional columnar nozzle, the cleaning coverage of a single nozzle is improved, thus reducing the number of nozzle bodies 50 used.

[0044] In one embodiment, the water supply mechanism includes a water supply pipe (not shown in the figure). To facilitate the rotation of the spray pipe 40, the spray pipe 40 has a closed structure at one end. The open end of the spray pipe 40 is sealed and rotatably connected to the water supply pipe through a rotary joint (not shown in the figure). The closed end of the spray pipe 40 is connected to the rotary drive assembly 60.

[0045] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of this 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.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model 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. 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 this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. An air flotation machine, characterized in that, include: The air flotation machine body (10) has a separation zone (11) and a collection zone (12); The scum removal mechanism (20) includes a rotary drive assembly (21) and at least one scraper body (22). The rotary drive assembly (21) is used to drive the scraper body (22) to rotate so as to scrape the scum in the separation zone (11) to the collection zone (12). A support frame (30) is provided on the air flotation machine body (10); The spray pipe (40) is rotatably mounted on the support frame (30) around its own axis. The spray pipe (40) is arranged above the separation zone (11). The length direction of the spray pipe (40) is parallel to the width direction of the air flotation machine body (10). Multiple nozzle bodies (50) are arranged at intervals along the length of the spray pipe (40), the nozzle bodies (50) face the separation zone (11), and the horizontal height of the lowest position of the nozzle body (50) is higher than the horizontal height of the highest position of the scraper body (22). A water supply mechanism for supplying water to the spray pipe (40) so that the nozzle body (50) sprays the scraper body (22) located on the return path; and A rotary drive assembly (60) is used to drive the spray pipe (40) to rotate at a certain angle.

2. The air flotation machine according to claim 1, characterized in that, The support frame (30) includes two baffles (31) arranged in parallel on both sides of the separation zone (11), and the two baffles (31) extend along the length of the air flotation machine body (10); the spray pipe (40) is rotatably fitted on the two baffles (31), and the rotation drive assembly (60) is located on one of the baffles (31).

3. The air flotation machine according to claim 2, characterized in that, The top of the baffle (31) is recessed downward to form an installation notch (311) for inserting the spray pipe (40). The baffle (31) is provided with a mounting seat (32), and the spray pipe (40) is rotatably fitted in the two mounting seats (32).

4. The air flotation machine according to claim 3, characterized in that, The mounting base (32) includes a detachable upper body (321) and a lower body (322). The lower body (322) is fixed to the side of the baffle (31) away from the other baffle (31). A limiting protrusion (323) is provided in the semi-circular groove of the lower body (322). Two annular limiting grooves (41) are provided on the spray pipe (40). The two limiting grooves are respectively close to the two ends of the spray pipe (40). Each limiting groove cooperates with the corresponding limiting protrusion (323).

5. The air flotation machine according to claim 2, characterized in that, It also includes two proximity sensors (70), which are mounted on one of the baffles (31) and arranged on both sides of the spray pipe (40). The proximity sensors (70) are used to detect the position of the scraper body (22) located on the return path.

6. The air flotation machine according to claim 2, characterized in that, The support frame (30) also includes multiple connecting rods (33), with each end of the connecting rod (33) connected to one of the two baffles (31).

7. The air flotation machine according to any one of claims 1 to 6, characterized in that, The nozzle body (50) adopts a fan-shaped nozzle.

8. The air flotation machine according to any one of claims 1 to 6, characterized in that, The water supply mechanism includes a water supply pipe, and the spray pipe (40) is rotatably connected to the water supply pipe via a rotary joint.

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