A high-oil and high-pollution multi-phase cyclone mixing air flotation reaction device is applied

Abstract

The application discloses a high-oil and high-pollution multi-phase cyclone mixing air flotation reaction device applied to the pretreatment technical field of sewage treatment, belongs to the pretreatment technical field of sewage treatment, and cancels a traditional dissolved air tank and a dissolved air releaser. After 5% to 100% raw water is pressurized to 8-10 bar, the raw water is directly introduced into high-pressure gas to form high-saturation dissolved air water, and 1-micron-level uniform micro-bubbles are generated through a cyclone mixer. Remaining raw water forms a cyclone with a rotation direction opposite to that of the dissolved air water along a spiral mixed flow plate, high-turbulence strong mixing is realized, and the device comprises a dissolved air water preparation pipeline, a mixed flow pipe, a mixed flow plate, a cyclone mixer, a quick-connection clamp and a fixing block. The cyclone mixer is composed of an outer cylinder, an inner cylinder and a positioning piece. The inner cylinder is provided with a gradient length top plug, the outer cylinder can rotate relative to the inner cylinder, and flow regulation is realized through the top plug to grade block jet holes. The device can stably treat 1000-2000 mg / L SS, 500-1000 mg / L high-pollution sewage of animal and vegetable oils and petroleum, has strong water quality and quantity impact resistance, saves 20%-50% of system land occupation compared with a traditional air flotation, and is free of blockage and maintenance.

Description

Technical Field

[0001] This invention belongs to the field of wastewater treatment technology, specifically relating to a vortex mixing flotation device without dissolved air tanks or traditional releasers, with high load capacity and anti-clogging properties. It is particularly suitable for the pretreatment of highly polluting industrial wastewater from industries such as oil refining, chemical manufacturing, papermaking, leather making, printing and dyeing, food processing, and pharmaceutical manufacturing, which have high suspended solids concentrations, large water quality fluctuations, and are prone to clogging of traditional flotation systems. Background Technology

[0002] Dissolved air flotation is a core process for solid-liquid separation. Traditional pressurized dissolved air flotation requires systems such as dissolved air tanks, release devices, reflux pumps, and packing materials. It has drawbacks such as large bubble diameter, low efficiency, easy clogging of release devices, low processing load, large footprint, and poor shock resistance.

[0003] A search revealed that patent publication number CN206735964U discloses a novel fully dissolved gas high-pressure cyclone flotation device, comprising a reaction system and a flotation tank. The flotation tank has an exhaust port at the top, an oil outlet on the side, and a sludge discharge port at the bottom. The flotation tank includes an outer tank and a cyclone inner cylinder housed within the outer tank. The reaction system is connected to the cyclone inner cylinder via an inlet pipe. The flotation tank is connected to an automatic water level regulator, and an oil-water interface measuring instrument for use with the automatic water level regulator is installed at its top. An oil skimmer is installed above the cyclone inner cylinder, and the oil outlet is located on the side wall of the outer tank below the oil skimmer. This device uses a fully dissolved gas cyclone tank and a three-phase mixer, but still relies on traditional dissolved gas and release structures, failing to solve the clogging problem. Existing patent publication number CN206587609U discloses a high-pressure multiphase vortex mixer, including a cylindrical mixer shell and a tubular mixer core disposed therein. The two ends of the mixer shell are fixedly connected to the two ends of the mixer shell, and are respectively provided with a high-pressure air inlet and a multiphase mixture outlet. An annular cylindrical cavity is formed between the outer wall of the mixer core and the inner wall of the mixer shell. A sewage inlet pipe with a reagent dosing port is provided on the outer wall of the mixer shell. The ratio of the inner diameter to the outer diameter of the mixer core is one-third to two-thirds. Multiple threaded through holes with an angle of 55° to 85° with the inner wall are provided on its side wall. This mixer is a vortex mixer, which requires an external release device and still has the risk of blockage. It does not have a graded adjustment or reverse swirl enhancement mechanism.

[0004] To address the aforementioned shortcomings, this invention provides a complete device for high-pressure direct air dissolution, swirling mixing, reverse swirling enhancement, and graded flow rate adjustment, thus completely resolving the pain points of air flotation treatment for highly polluted wastewater. Summary of the Invention

[0005] The purpose of this invention is to overcome the problems of low efficiency, easy clogging, low load, large footprint, and poor adaptability of traditional air flotation, and to provide a vortex mixing air flotation device with simple structure, reliable connection, convenient adjustment, and suitable for highly polluted wastewater.

[0006] To achieve the above objectives, this invention proposes a multiphase swirl mixing flotation reactor for high-oil and high-pollution environments, comprising: a dissolved air-water preparation pipeline, a mixing pipe, a mixing plate, a swirl mixer, quick-connect clamps, and a fixing block.

[0007] 1. Dissolved air water preparation pipeline: - Function: Transports 5% to 100% raw water, pressurizes it to 8-10 bar, and connects it to high-pressure air / nitrogen to directly form highly saturated dissolved air water in the pipeline.

[0008] - Connection: The water outlet end is quickly and securely connected to the upper end of the inner cylinder via a quick-connect clamp, enabling detachable and sealed assembly.

[0009] 2. Mixing tube: - Structure: The upper and lower sections are sealed together, and the connection is made by flange / quick coupling.

[0010] - Upper part: Axially penetrating and fixing the dissolved air water preparation pipeline, both are sealed and fixed.

[0011] -Lower part: Located on the outside of the outer cylinder, forming an annular cavity, with a spiral mixing plate welded / bolted inside.

[0012] - Top: Open the water inlet to introduce the remaining raw water.

[0013] 3. Mixing plate: - Structure: Spiral plate type, fixed to the lower inner wall of the mixing tube.

[0014] - Connection: Welded and fixed to the inner wall of the mixing pipe.

[0015] - Function: To cause the remaining raw water to swirl downwards along a spiral trajectory, with the swirling direction opposite to that of the dissolved air water ejected from the jet orifice.

[0016] 4. Swirl mixer: It consists of three parts: outer cylinder, inner cylinder, and positioning element.

[0017] ① The outer cylinder components include: outer cylinder body, fixed plate, outflow port, swirl plate, jet hole, and arc-shaped guide plate.

[0018] - Fixed plate: welded and fixed to the upper and lower ends of the outer cylinder. - Outlet: evenly spaced along the circumference of the outer cylinder.

[0019] - Swirl plate: radially welded to the outer wall of the outer cylinder, located on the side of the outflow port.

[0020] -Jet holes: Holes are equidistantly spaced along the length of the swirl plate.

[0021] - Arc-shaped guide plate: Welded adjacent swirl plates, together with the swirl plates and outer cylinder, to form the top plug rotation area.

[0022] - Support: The lower end of the outer cylinder is supported by a fixing block, which is welded to the inner wall of the mixing pipe.

[0023] ② The inner cylinder components include: inner cylinder body, inner outlet, raised edge, top plug, chuck, and positioning hole.

[0024] -Inner cylinder: The bottom is closed, and the upper end is connected to the dissolved air water preparation pipeline via quick-connect clamps.

[0025] -Inner outlet: It is opened at equal intervals along the circumference of the inner cylinder and is connected to the outer outlet.

[0026] - Curved edge: formed by the radial outward extension of the outer wall of the inner cylinder.

[0027] -Top plugs: They are fixed in groups on the side of the vortex plate facing the curved edge, with their lengths set in a gradient. When rotating, they can block the jet holes in stages.

[0028] - Chuck: Welded / integrated into the upper part of the inner cylinder.

[0029] - Positioning holes: Several holes are evenly spaced along the circumference of the chuck for fixing the gear position.

[0030] ③ The positioning components include: guide block, threaded rod, pull ring, nut, compression spring, and magnetic block.

[0031] -Guide block: Bolted / welded to the side of the swirl plate.

[0032] - Threaded rod: vertically sliding through the guide block.

[0033] - Pull ring: Fixedly connected to the lower end of the threaded rod.

[0034] - Nut: A threaded connection on the outer side of the upper end of a threaded rod.

[0035] - Compression spring: Sleeve over the threaded rod, with both ends abutting against the nut and guide block respectively, to maintain the compressed state and achieve gear self-locking.

[0036] - Magnetic block: Fixed to the top surface of the guide block, it magnetically attracts and fixes the threaded rod, making it easy to adjust the hole position for turning.

[0037] - Positioning fit: The threaded rod is inserted into the positioning hole of the chuck under the action of spring force to achieve graded fixation.

[0038] 5. Quick-connect clamps: Quickly seal and lock the outlet of the dissolved air water preparation pipeline to the upper end of the inner cylinder; detachable.

[0039] 6. Fixing block: Welded to the lower inner wall of the mixing pipe. - Function: The upper end face supports the outer cylinder, ensuring stable rotation.

[0040] Workflow: (1) 5%~100% raw water → pressurized to 8-10 bar → high pressure gas dissolves → dissolved air water preparation pipeline → inner cylinder → inner outlet → outer outlet → swirl plate → jet hole high-speed swirling jet, producing μm-level microbubbles.

[0041] (2) Remaining raw water → top of the mixing pipe → spirals downward along the mixing plate.

[0042] (3) The two fluids rotate in opposite directions and collide with each other under high turbulence. The microbubbles and flocs adhere fully to each other, forming air-entrained flocs that float rapidly to complete solid-liquid separation.

[0043] (4). Flow rate adjustment: Pull up the pull ring → the threaded rod disengages from the positioning hole and is automatically magnetically attracted → rotate the outer cylinder → the gradient top plug seals the jet hole in stages → release the pull ring (push to break the magnetic attraction) → the spring automatically locks the position.

[0044] Compared with related technologies, the present invention provides a multiphase swirling mixing flotation reactor for high-oil and high-pollution environments with the following advantages: 1. This invention eliminates the need for a dissolved gas tank and a traditional release device; the gas is dissolved directly in the pipeline, preventing blockage at the source.

[0045] 2. This invention can generate microbubbles at the 1μm level, with an adsorption efficiency far exceeding that of traditional air flotation.

[0046] 3. This invention employs reverse swirling strong mixing, which improves efficiency by more than 30%.

[0047] 4. This invention uses a gradient top plug and magnetic self-locking, with multiple precise adjustment levels and strong self-adaptation.

[0048] 5. The present invention has a high treatment load: it can stably treat highly polluted wastewater with SS of 1000~2000mg / L and animal and vegetable oils and petroleum products of 500~1000mg / L.

[0049] 6. This invention saves 20% to 50% of the floor space, has a simple system, and low operation and maintenance costs.

[0050] 7. This invention features reliable connection and quick assembly / disassembly: quick-connect clamps and welded supports provide strong industrial stability. Attached Figure Description

[0051] Figure 1 This is a schematic diagram of the principle of a multiphase swirling mixing air flotation reactor for high oil and high pollution applications proposed in this invention; Figure 2 This is a schematic diagram of the overall cyclone mixer proposed in this invention; Figure 3 This is a schematic cross-sectional view of the cyclone mixer proposed in this invention; Figure 4 This is a schematic diagram of the outer cylinder component proposed in this invention; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 This is a schematic diagram of the inner cylinder component proposed in this invention; Figure 7 for Figure 6 Enlarged view of point B in the middle; Figure 8 This is a schematic diagram of the overall process of applying the present invention to the treatment of high-oil and high-pollution wastewater.

[0052] In the diagram: 1. Dissolved air water preparation pipeline; 2. Mixing pipe; 3. Mixing plate; 4. Swirl mixer; 41. Outer cylinder; 411. Outer cylinder body; 412. Fixing plate; 413. Outer outlet; 414. Swirl plate; 415. Jet hole; 416. Arc-shaped guide plate; 42. Inner cylinder; 421. Inner cylinder body; 422. Inner outlet; 423. Edge; 424. Top plug; 425. Chuck; 426. Positioning hole; 43. Positioning component; 431. Guide block; 432. Threaded rod; 433. Pull ring; 434. Nut; 435. Spring; 436. Magnetic block; 5. Quick-connect clamp; 6. Fixing block. Detailed Implementation

[0053] The present invention will be further described in detail below with reference to specific embodiments, so that those skilled in the art can understand it.

[0054] Please see Figures 1-7 This invention proposes a multiphase vortex mixing flotation reactor for high-oil and high-pollution environments: A dissolved air water preparation pipeline 1 is supplied with raw water pressurized to 8-10 bar at 5-100% pressure. The outlet of the dissolved air water preparation pipeline 1 is connected to the inner cylinder 42 of a vortex mixer 4 via a quick-connect clamp 5. The vortex mixer 4 includes an outer cylinder 41, an inner cylinder 42, and a positioning element 43. The outer cylinder 41 has several equidistantly distributed outflow ports 413, and each outflow port 413 is surrounded by a row of jet holes 415. The flow hole 415 discharges dissolved air water from the outflow port 413 and introduces it into the mixing tube 2 in a swirling manner. The mixing tube 2 is composed of two connected parts, the upper part of which is fixed with a dissolved air water preparation pipeline 1, and the lower part of which is fixed with a spirally arranged mixing plate 3 in the annular cavity outside the outer cylinder 41. The top of the mixing tube 2 is filled with the remaining raw water, which can move downwards in a spiral motion along the mixing plate 3 under the action of gravity, and the rotation direction of the raw water is opposite to the rotation direction of the dissolved air water discharged from the jet hole 415.

[0055] The inner cylinder 42 is disposed inside the outer cylinder 41. The outer cylinder 41 can rotate relative to the inner cylinder 42 to adjust the flow rate of the jet hole 415. The bottom of the inner cylinder 42 is closed. Several fixing blocks 6 supporting the outer cylinder 41 are fixed on the inner wall of the mixing pipe 2. Several equidistant inner flow ports 422 are provided on the inner cylinder 42. Each inner flow port 422 is provided with a top plug 424 corresponding to the jet hole 415.

[0056] The outer cylinder 41 includes an outer cylinder body 411, with fixed plates 412 fixed at both ends of the outer cylinder body 411. Outflow ports 413 are evenly distributed on the outer cylinder body 411. Swirl plates 414 are fixed between the two fixed plates 412 and radially arranged outside the outer cylinder body 411 on one side of the outflow ports 413. Jet holes 415 are evenly arranged in a straight line on the swirl plates 414. An arc-shaped guide plate 416 is fixed between two adjacent swirl plates 414.

[0057] The inner cylinder 42 includes an inner cylinder body 421, with inner inlets 422 evenly distributed on the inner cylinder body 421. The inner cylinder body 421 has a raised edge 423 extending radially outward on one side of the inner inlets 422. The arc-shaped guide plate 416, the swirl plate 414, and the outer cylinder body 411 enclose a rotating area for the raised edge 423. The top plug 424 is evenly arranged on the raised edge 423 and can block the jet hole 415 when rotating towards the swirl plate 414.

[0058] The top plugs 424 are arranged in groups, with each group of top plugs 424 having a gradient in length, for graded blocking of the jet orifice 415 to regulate its flow rate.

[0059] The positioning component 43 includes a guide block 431, which is fixed to the side of the swirl plate 414. A vertically distributed threaded rod 432 is slidably arranged on the inner side of the guide block 431. The lower end of the threaded rod 432 passes through the guide block 431 and is fixed with a pull ring 433. A nut 434 is threadedly connected to the outer side of the upper end of the threaded rod 432. A spring 435 is sleeved on the threaded rod 432. The spring 435 is a compression spring, and its two ends abut against the nut 434 and the guide block 431 respectively. A magnetic block 436 that can attract the nut 434 is fixed on the top surface of the guide block 431.

[0060] A chuck 425 is fixed to the upper end of the inner cylinder 421. Several positioning holes 426 are opened on the bottom surface of the chuck 425, which are used to fix the outer cylinder 41 in stages.

[0061] The following provides a complete embodiment of this device, taking into account its specific structural parameters, operating conditions, and processing effects.

[0062] Example 1 (Treatment of High-Concentration Chemical Wastewater) (1). Device structural parameters: 1. Dissolved air water preparation pipeline: - Pipe diameter: DN50, material: 304 stainless steel; -Working pressure: 8-10 bar -Dissolved gas; Ratio: 30% of the raw water is taken into the dissolved air pipeline, and high-pressure air is introduced. The air-to-water volume ratio is 1:10, and saturated dissolved air water is formed directly in the pipeline. 2. Mixing flow tube: -Inner diameter: Φ325mm, with upper and lower flange sections connected for sealing; -Top inlet: DN150, for the remaining 70% of raw water; 3. Mixing plate: - Helix angle: 30°, pitch: 150mm, thickness: 6mm; - Rotation direction: Clockwise downward swirling; 4. Swirl mixer: -Outer cylinder components: outer cylinder body Φ273mm, 24 outflow ports Φ8mm, 8 swirl plates, jet holes Φ2.5mm, 6 swirl plates per jet plate; -Inner cylinder: The inner cylinder is Φ159mm, and the inner and outer outlets correspond one-to-one; the top plugs are divided into 3 groups with length gradients of 8mm, 12mm and 16mm, which can block the jet holes in stages. - Positioning components: 8 positioning holes, equally divided into circumferences, spring preload 50N, magnetic block attraction force 80N, realizing 3-level flow rate adjustment; 5. Quick-connect clamps: DN50 quick-connect sanitary clamps, with fluororubber gaskets; 6. Fixing blocks: 8 evenly distributed blocks, 12mm thick, supporting the outer cylinder.

[0063] (2). Operation process: 1.30% raw water is pressurized to 8-10 bar by a pump, and then mixed with high-pressure air in the dissolved air pipeline to form saturated dissolved air water, which then enters the inner cylinder; 2. Dissolved water enters the vortex plate through the inner and outer inlets and is ejected at high speed in a counterclockwise vortex through the jet holes, generating 1–5μm microbubbles; 3. The remaining 70% of the raw water enters from the top of the mixing pipe and flows clockwise downwards along the spiral mixing plate; 4. The two fluid streams swirl in opposite directions, causing microbubbles to quickly adhere to suspended solids and oils in the wastewater; 5. Adjustment: The pull ring is magnetically secured to unlock. Rotate the outer cylinder to the corresponding position. After releasing, the spring will automatically lock. The top plug seals the jet holes in stages to adapt to water quality fluctuations.

[0064] (3). Treatment effect: - Water quality treated: Chemical wastewater, SS=1500mg / L, oil content 850mg / L; - Treatment capacity: 25 m³ / h - Effluent parameters: SS ≤ 30 mg / L, oil content ≤ 30 mg / L; -Removal efficiency: SS removal rate 98%, oil removal rate 96.5%; - Compared to traditional air flotation: 35% higher efficiency, no clogging, and 40% less floor space.

[0065] Example 2 (Pretreatment of Papermaking Black Liquor) (1). Device structural parameters: 1. Dissolved air water preparation pipeline: - Pipe diameter: DN65, material: 316L stainless steel; -Work pressure: 8-10 bar; - Dissolved air ratio: Take 50% dissolved air from the raw water and introduce high-pressure nitrogen (to prevent oxidation); 2. Inner diameter of the mixing pipe: Φ400mm, quick-connect sealing structure; 3. Helix angle of the mixing plate: 25°, clockwise; 4. Swirl mixer: -Jet holes: Φ3mm, 8 per swirl plate; -Top plug: 4 sets of gradient lengths to achieve 4 levels of flow adjustment; - Rotation direction: Dissolved water is sprayed out counterclockwise.

[0066] (2). Operation process: 1.50% raw water is pressurized and dissolved in air, and microbubbles are released at high speed through the inner cylinder and jet holes; 2.50% of the remaining raw water flows downwards in a reverse spiral along the mixing plate; 3. Strong mixing through counter-current swirling allows fibers, colloids, and bubbles to quickly combine and float to the surface; 4. The positioning element is magnetically self-locking, which stably maintains the processing flow rate.

[0067] (3). Treatment effect: -Inlet water: Papermaking black liquor, SS=2000mg / L; - Effluent: SS≤48mg / L, removal rate 97.6%; - Runs continuously for 30 days without clogging, no need to clean the release device; - The system's energy consumption is reduced by 25% compared to traditional air flotation.

[0068] Example 3 (High-concentration food processing wastewater) (1). Device structural parameters: - Dissolved air ratio: 20% dissolved air from raw water, 80% raw water directly enters the mixing pipe; - Jet orifice rotation direction: counterclockwise; mixing plate rotation direction: clockwise; - Positioning levels: 3 levels, corresponding to flow rates of 10m³ / h, 15m³ / h, and 20m³ / h.

[0069] (2). Treatment effect: -Influent SS = 1800 mg / L, effluent SS ≤ 72 mg / L; - The microbubble particle size is stable at 1–3 μm, resulting in high adhesion efficiency; - No dissolved gas tank or release device, reducing operation and maintenance costs by 60%.

[0070] From the above embodiments, we can conclude that: 1. The dissolved air water pressure is constant at 8-10 bar, and the raw water reuse ratio is adjustable from 5% to 100% to suit different water qualities; 2. The jet orifice and the mixing plate rotate in opposite directions, creating strong turbulent opposing mixing; 3. Gradient top plug and magnetic positioning enable graded flow regulation, adapting to highly polluted and fluctuating wastewater; 4. The entire process is free of traditional release devices and dissolved gas tanks, eliminating the possibility of blockages from the structural design. 5. The microbubble particle size is 1–5 μm, and the solid-liquid separation efficiency is more than 30% higher than that of traditional air flotation.

[0071] The overall process flow of this invention is described below: Please see Figure 8 Raw water (raw water indicators: SS: 1000~2000mg / L, animal and vegetable oils and petroleum hydrocarbons: 500~1000mg / L) is pressurized by a high-pressure water pump, and pressurized air is introduced at the inlet to directly complete the pressurized dissolved air process in the raw water. Chemical agents are directly added to the dissolved air water through a multiphase cyclone mixer, and the resulting flocs are a solid-liquid-gas mixture under high pressure. Wastewater is gradually released from the multi-stage multiphase cyclone mixer, and the pressure decreases, squeezing out the water from the flocs. As the water content of the flocs decreases significantly, their specific gravity also decreases, allowing them to float to the surface within seconds without external force, achieving solid-liquid separation. After solid-liquid separation, the clear water is discharged (SS removal rate: 95~98%, animal and vegetable oils and petroleum hydrocarbons removal rate: 95~98%), and the scum is dewatered.

[0072] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of the present invention according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of the present invention. These technical solutions are also within the scope of protection of the present invention.

Claims

1. A multiphase swirling mixing flotation reactor for high-oil, high-pollution environments, characterized in that, Includes dissolved air water preparation pipeline (1), mixing pipe (2), mixing plate (3), swirl mixer (4), quick-connect clamp (5), and fixing block (6); The cyclone mixer (4) includes an outer cylinder (41), an inner cylinder (42), and a positioning component (43); The dissolved air water preparation pipeline (1) is used to transport raw water pressurized to 8-10 bar at 5% to 100% and connected to high pressure gas. Its outlet end is sealed to the upper end of the inner cylinder (42) by quick-connect clamp (5). The mixing pipe (2) is a sealed structure with two sections connected together. The upper part of the mixing pipe (2) is radially penetrated and fixed to the dissolved air water preparation pipeline (1). The lower part of the mixing pipe (2) is fixedly installed in the annular cavity outside the outer cylinder (41). The remaining raw water is introduced into the top opening of the mixing pipe (2). The outer cylinder (41) is provided with an outflow port (413), a swirl plate (414), and jet holes (415) arranged in a straight line evenly; the inner cylinder (42) is provided with an inner outflow port (422), a raised edge (423), and top plugs (424) arranged in groups; the outer cylinder (41) can rotate relative to the axis of the inner cylinder (42), and the top plugs (424) seal the jet holes (415) in stages as they rotate to achieve flow rate regulation; The positioning element (43) is used to fix the outer cylinder (41) to the inner cylinder (42) in stages. The inner wall of the mixing pipe (2) is uniformly fixed with a fixing block (6), and the upper end face of the fixing block (6) supports the outer cylinder (41). The direction of the dissolved air water sprayed out through the jet hole (415) is opposite to the direction of the remaining raw water spiraling down along the mixing plate (3), forming a reverse swirling mixture.

2. The multiphase swirling mixing flotation reactor for high-oil, high-pollution environments according to claim 1, characterized in that, The outer cylinder (41) includes an outer cylinder (411), a fixed plate (412), an outflow port (413), a swirl plate (414), a jet hole (415), and an arc-shaped guide plate (416). The fixed plate (412) is fixedly connected to the upper and lower ends of the outer cylinder (411). The outflow port (413) is evenly distributed at equal intervals along the circumference of the outer cylinder (411). The swirl plate (414) is radially fixed to the outer wall of the outer cylinder (411) and located on one side of the outflow port (413). The jet hole (415) is arranged at equal intervals in a straight line along the length of the swirl plate (414). The arc-shaped guide plate (416) is fixedly connected to adjacent swirl plates (414) and is used to guide the flow direction of dissolved water.

3. The multiphase swirling mixing flotation reactor for high-oil, high-pollution environments according to claim 2, characterized in that, The inner cylinder component (42) includes an inner cylinder body (421), an inner inlet (422), a raised edge (423), a top plug (424), a chuck (425), and a positioning hole (426); the bottom of the inner cylinder body (421) is closed, the inner inlet (422) is equidistantly distributed along the circumference of the inner cylinder body (421) and corresponds to the position of the outer inlet (413); the raised edge (423) is formed by extending radially outward from the outer wall of the inner cylinder body (421).

4. The multiphase swirling mixing flotation reactor for high-oil, high-pollution environments according to claim 3, characterized in that, The top plugs (424) are fixed in groups on the side of the raised edge (423) facing the swirl plate (414), and the length of each group of top plugs (424) is set in a gradient, which is used to block the jet holes (415) in stages.

5. The multiphase swirling mixing flotation reactor for high-oil, high-pollution environments according to claim 4, characterized in that, The chuck (425) is fixedly connected to the upper end of the inner cylinder (421), and several positioning holes (426) are evenly opened along the circumference of the chuck (425) for use in conjunction with the positioning component (43) for graded fixation.

6. The multiphase swirling mixing flotation reactor for high-oil, high-pollution environments according to claim 3, characterized in that, The arc-shaped guide plate (416), the swirl plate (414), and the outer cylinder (411) enclose an active area for the rotation of the raised edge (423) and the top plug (424).

7. The multiphase swirling mixing flotation reactor for high-oil, high-pollution environments according to claim 5, characterized in that, The positioning component (43) includes a guide block (431), a threaded rod (432), a pull ring (433), a nut (434), a compression spring (435), and a magnetic block (436). The compression spring (435) is sleeved on the outside of the threaded rod (432), and its two ends abut against the nut (434) and the guide block (431) respectively. The magnetic block (436) is fixed to the top surface of the guide block (431) and attracts the nut (434) to achieve gear self-locking. The positioning component (43) cooperates with the positioning hole (426) on the chuck (425) to achieve graded fixation.

8. A multiphase swirling mixing flotation reactor for high-oil, high-pollution environments according to claim 7, characterized in that, The guide block (431) of the positioning component (43) is fixedly connected to the side of the swirl plate (414). The threaded rod (432) slides vertically through the inside of the guide block (431). The pull ring (433) is fixedly connected to the lower end of the threaded rod (432). The nut (434) is threadedly connected to the outer side of the upper end of the threaded rod (432). The compression spring (435) is in a compressed state. The magnetic block (436) attracts and fixes the nut (434) to achieve gear self-locking.

9. A multiphase swirling mixing flotation reactor for high-oil, high-pollution environments according to claim 1, characterized in that, The mixing plate (3) is fixed in a spiral shape to the lower inner wall of the mixing pipe (2). The remaining raw water flows downward spirally along the mixing plate (3), and the direction of the spiral is opposite to the direction of the dissolved air water sprayed out by the jet hole (415), forming a highly turbulent opposing mixing.

10. A multiphase swirling mixing flotation reactor for high-oil, high-pollution environments according to claim 1, characterized in that, The quick-connect clamp (5) is a sealed quick-installation structure, which enables quick disassembly and sealing connection between the dissolved air water preparation pipeline (1) and the upper end of the inner cylinder (421).

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