Micro-nano bubble cyclone oil removal device

Abstract

This utility model discloses a micro / nano bubble cyclone flotation oil removal device, including a tank. A micro / nano bubble tube and a high-pressure water pipe are connected to the lower side of the tank. A pressure mixer, a micro / nano generator, and a water pump are sequentially connected to the inlet of the micro / nano bubble tube. A horizontally arranged air outlet pipe is connected to the outlet of the micro / nano bubble tube, and bubble outlet holes are evenly distributed on the surface of the air outlet pipe. A horizontal branch pipe is rotatably connected to the outlet of the high-pressure water pipe, and the outlet of the horizontal branch pipe is tangentially arranged relative to the inner wall of the tank. An oil outlet and a water outlet are provided on the upper side of the tank, with the oil outlet higher than the water outlet. A weir is provided on the inner side of the upper end of the tank, and a scum trough is formed between the outer side of the weir and the inner wall of the tank. A scraper is provided on the lower side of the tank cover, and a scum discharge port is provided at the bottom of the tank. This utility model solves the problems of high chemical reagent consumption, large equipment footprint, and high operating costs.

Description

Technical Field

[0001] This utility model belongs to the technical field of oil and gas field water treatment equipment, specifically relating to a micro-nano bubble vortex air flotation oil removal device. Background Technology

[0002] Traditional mainstream oil removal technologies primarily rely on coalescence oil removal equipment, which works by agglomerating small oil droplets into larger ones for gravity separation. This type of equipment often depends on chemical reagents to achieve the required standards, and its stability is highly dependent on parameters and reagents. Inappropriate parameters can easily lead to excessive oil content at the outlet. Furthermore, traditional air flotation technology typically requires large open facilities such as separation tanks, settling tanks, and flotation tanks for oil removal, resulting in large equipment footprints that are difficult to adapt to the specific needs of closed-loop operation on offshore platforms and in areas with limited space. Simultaneously, its effectiveness in treating emulsified oil and fine oil droplets is very limited, requiring continuous addition of flocculants and coagulants. This high dependence on chemical reagents keeps operating costs high, resulting in unsatisfactory environmental and economic benefits. Therefore, it is essential to develop an economical and efficient air flotation oil removal system, particularly suitable for use on offshore platforms or in onshore oil fields with limited space. Utility Model Content

[0003] The purpose of this invention is to provide a micro-nano bubble vortex flotation oil removal device to solve the problems of high chemical reagent consumption, large equipment footprint, and high operating costs in existing technologies.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a micro-nano bubble vortex flotation oil removal device, comprising a tank body, with micro-nano bubble tubes and high-pressure water pipes connected to the lower side of the tank body. A pressure mixer, a micro-nano generator, and a water pump are sequentially connected to the inlet of the micro-nano bubble tubes. A horizontally arranged air outlet pipe is connected to the outlet of the micro-nano bubble tubes, with bubble outlet holes evenly distributed on the surface of the air outlet pipe. A horizontal branch pipe is rotatably connected to the outlet of the high-pressure water pipe, with the outlet of the horizontal branch pipe tangentially arranged relative to the inner wall of the tank body. An oil outlet and a water outlet are provided on the upper side of the tank body, with the oil outlet higher than the water outlet. A weir is provided on the inner side of the upper end of the tank body, with multiple serrations along the upper edge of the weir. A scum trough is formed between the outer side of the weir and the inner wall of the tank body. A scraper is provided on the lower side of the tank cover, and a scum discharge port is provided at the bottom of the tank body.

[0005] The technical solution of this utility model also has the following characteristics:

[0006] There are multiple horizontal branch pipes, which are arranged at equal angles around the circumference. The water flowing out of the outlet of the horizontal branch pipe enters the tank tangentially.

[0007] Each horizontal branch pipe is equipped with a guide vane on its lower side. The guide vane is fixed to the outside of the sleeve. The horizontal branch pipe is connected to the outside of the sleeve. The sleeve is rotatably mounted to the outlet of the high-pressure water pipe.

[0008] A drive motor is installed on the outside of the can lid, and the drive end of the drive motor is connected to the scraper.

[0009] The tank is divided into an upper tank, a middle tank, and a lower tank. The upper tank is detachably connected to the upper end of the middle tank, and the lower tank is detachably connected to the lower end of the middle tank.

[0010] The lower end of the upper tank body is detachably assembled with the upper end of the middle tank body via a flange, and the upper end of the lower tank body is detachably assembled with the lower end of the middle tank body via a flange.

[0011] The inner cavity of the middle tank transitions into a trumpet shape towards both ends.

[0012] A slag discharge hopper is connected to the slag discharge port at the bottom of the tank.

[0013] The lower end of the tank is fixed with support legs.

[0014] The beneficial effects of this utility model are:

[0015] (1) The micro-nano bubble vortex air flotation oil removal device of this utility model enhances the separation of oil and water in a physical way through the fusion of micro-nano bubbles and the synergistic effect of vortex air flotation, and further realizes the integration of oil-water separation and filtration maintenance.

[0016] (2) The micro-nano bubble vortex air flotation oil removal device of this utility model adopts modular and skid-mounted assembly, with a compact overall structure and strong adaptability. It is particularly suitable for scenarios such as high emulsified oil, space-constrained offshore platforms, and site-constrained marginal oil fields, and naturally meets the requirements for fully enclosed safe operation.

[0017] (3) The micro-nano bubble vortex flotation oil removal device of this utility model can significantly reduce the use of chemical agents and save operating costs. Its efficient separation ability can also reduce the load on the subsequent filtration unit and extend its service life, thereby reducing the overall maintenance cost. Attached Figure Description

[0018] Figure 1 This is a front view of a micro-nano bubble vortex flotation oil removal device according to this utility model;

[0019] Figure 2 This is a side view of a micro / nano bubble vortex flotation oil removal device according to the present invention;

[0020] Figure 3 This is a top view of a micro / nano bubble vortex flotation oil removal device according to this utility model;

[0021] Figure 4 This is a schematic diagram of the arrangement of horizontal branch pipes in a micro-nano bubble vortex flotation oil removal device of this utility model.

[0022] Figure 5 This is a schematic diagram of the weir arrangement in a micro-nano bubble vortex flotation oil removal device of this utility model;

[0023] Figure 6 This is a schematic diagram of the air outlet pipe arrangement in a micro-nano bubble vortex air flotation oil removal device of this utility model.

[0024] In the diagram, 1. Water pump, 2. Micro / nano generator, 3. Pressure mixer, 4. Air outlet pipe, 401. Inner ring pipe, 402. Connecting pipe, 403. Outer ring pipe, 5. Tank body, 6. Casing, 7. Water outlet pipe, 8. Weir gate, 9. Drive motor, 10. Tank cover, 11. Oil outlet pipe, 12. Horizontal branch pipe, 13. Guide vane, 14. High-pressure water pipe, 15. Slag hopper, 16. Support leg, 17. Micro / nano bubble tube, 18. Flange, 19. Scraper, 20. Air inlet, 21. Scum trough. Detailed Implementation

[0025] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Example 1

[0027] like Figures 1 to 3 As shown, this utility model discloses a micro / nano bubble vortex flotation oil removal device, comprising a tank 5. A micro / nano bubble tube 17 and a high-pressure water pipe 14 are connected to the lower side of the tank 5. A pressure mixer 3, a micro / nano generator 2, and a water pump 1 are sequentially connected to the inlet of the micro / nano bubble tube 17. A horizontally arranged air outlet pipe 4 is connected to the outlet of the micro / nano bubble tube 17. Bubble outlet holes are evenly distributed on the surface of the air outlet pipe 4. A sleeve 6 is rotatably fitted to the outlet of the high-pressure water pipe 14. Figure 4 As shown, multiple horizontal branch pipes 12 are connected to the outside of the casing 6. Each horizontal branch pipe 12 has a guide vane 13 on its lower side, which is fixed to the outside of the casing. The outlets of the horizontal branch pipes 12 are tangentially arranged relative to the inner wall of the tank 5. An oil outlet and a water outlet are provided on the upper side of the tank 5, with the oil outlet higher than the water outlet. The oil outlet is connected to an oil pipe 11, and the water outlet is connected to a water pipe 7. Figure 5 As shown, a weir gate 8 is provided on the inner side of the upper end of the tank body 5. Multiple serrations are provided on the upper edge of the weir gate 8. A scum trough 21 is formed between the outer side of the weir gate 8 and the inner wall of the tank body 1. A scraper 19 is rotatably provided on the lower side of the tank cover 10 of the tank body 5. A scum discharge port is provided at the bottom of the tank body 5.

[0028] During operation, water pump 1 connects to a water source, delivering raw water at high pressure and high flow rate to the micro / nano bubble generator 2. Upon entering the generator 2, the high-pressure water flow undergoes high-speed shearing and collision with gas introduced from the gas source interface 20 within the generator 2's cavity structure, pulverizing the gas into micro / nano-sized bubbles and forming high-concentration micro / nano bubble water. This water is then injected into the pressure mixer 3 under pressure. The pressure mixer 3 forces some large bubbles to remix, transforming them into smaller bubbles with micron-sized or smaller particle sizes. With the pressure controlled within the system's requirements, this further generates more and more stable micron-sized and nano-sized bubbles, facilitating better capture of oil and suspended particles. The micro-nano bubbles output from the pressure mixer 3 are fed into the outlet pipe 4 through the micro-nano bubble tube 17, and flow out from the bubble outlet holes on the outlet pipe 4. They then float from the bottom of the liquid stored in the tank 5 to the surface. During the floating process, oil droplets and suspended solids adhering to the oily wastewater are quickly removed as scum. The scum enters the scum tank 21 through the serrated gaps along the upper edge of the weir gate 8, and is finally discharged from the oil outlet pipe 11. At the same time, the oil-water mixture enters through the high-pressure water pipe 14, and after being guided by the horizontal branch pipe 12, the water flows into the tank 5 through the high-efficiency, low-resistance tangential inlet. Under the enhancement effect of the guide vanes 13, a strong and stable swirling field is generated, providing kinetic energy for the efficient separation of the gas-liquid-solid three phases. The generation and stability of the swirling flow field are the kinetic basis for efficient gas-liquid-solid three-phase separation. Excessive centrifugal force may throw bubbles towards the wall, which is not conducive to the contact between bubbles and particles in the central region; insufficient centrifugal force will not be able to quickly separate heavy particles. Here, the gas-liquid mixture generates a high-speed rotating flow field through the swirling component, which is perfectly matched with the floating flow field of micro-nano bubbles. Its structural design, optimized by fluid mechanics, can promote the collision and adhesion of bubbles and particles, realizing a synergistic coupling mechanism of "swirling flow" and "air flotation". Due to the different densities of sand and water, during the swirling process, the less dense oily wastewater rises to the upper part of tank 5, while the denser sediment or sludge sinks to the bottom and is discharged from the sludge discharge port.

[0029] This utility model discloses a micro-nano bubble vortex flotation oil removal device, which removes oil by means of the following steps:

[0030] Step 1: Turn on water pump 1, micro / nano generator 2 and pressure mixer 3. Water pump 1 pressurizes the water and the gas introduced from the gas source interface, and the water is efficiently mixed with the gas in the micro / nano generator 2 to produce micro / nano bubble water (micro / nano bubble water contains ultra-micro bubbles with a particle size of 1μm-30μm and micro / nano bubbles with a particle size of 5nm-500nm). The micro / nano bubbles are then pressurized and output by pressure mixer 3.

[0031] Step 2: The oil-water mixture is output from the horizontal branch pipe 12 through the high-pressure water pipe 14 at a certain tangential high pressure, forming a stable swirling field in the tank 5, which sends larger particles or sludge into the slag discharge port for discharge.

[0032] Step 3: When the micro-nano bubbles generated in step 1 float to the surface, they adsorb oil droplets and suspended matter. The scum generated by the tangential water inlet is discharged into the scum tank 21 and then discharged through the oil outlet pipe 11.

[0033] Therefore, compared with the prior art, the present invention has the following advantages;

[0034] (1) The micro-nano bubble cyclone flotation oil removal device of this utility model integrates physical cyclone separation and flotation technology, which can efficiently and energy-savingly separate solids and liquids or oil and water. Its structure is highly integrated and occupies a small area: cyclone separation and flotation separation are organically integrated into a compact tank. First, the centrifugal force generated by the cyclone is used to initially separate heavy oil and heavy particles, and then the micro-nano bubbles generated by the micro-nano generator adhere and remove light oil and suspended solids. The process is compact and occupies only 1 / 2 to 1 / 3 of the area of ​​traditional combined processes.

[0035] (2) The micro-nano bubble swirling air flotation oil removal device of this utility model adopts a swirling shearing generation method for micro-nano bubbles. By optimizing its internal structural parameters (such as venturi tube size, swirling cavity angle, shear disk tooth shape, etc.), high gas transfer efficiency, low energy consumption and stable bubble particle size distribution (5nm ~500nm, 1μm ~30μm) can be achieved.

[0036] (3) The micro-nano bubble vortex air flotation oil removal device of this utility model perfectly matches the high-speed rotating flow field with the micro-nano bubble floating flow field, realizing the synergistic coupling of "vortex" and "air flotation", so that the bubble flocs or oil droplets are quickly and thoroughly separated and floated to form a stable oil-containing scum layer.

[0037] (4) Compared with the traditional method of discharging a large amount of water along with scum on the market, the micro-nano bubble vortex flotation oil removal device of this utility model greatly reduces the cost of sludge treatment by discharging scum at high concentration, while improving environmental and economic benefits.

[0038] (5) The micro-nano bubble vortex air flotation oil removal device of this utility model can effectively suppress the rupture of micro-nano bubbles in the pressure mixer 3, prolong their residence time in water, and ensure the stability and effectiveness of the effluent.

[0039] (6) The micro-nano bubble cyclone flotation oil removal device of this utility model is made of materials (such as SS316L stainless steel with ceramic coating on the surface) that can resist corrosion and wear. The internal structure of the micro-nano bubble generator and the inner wall of the cyclone are flat, smooth and without protrusions.

[0040] (7) The micro-nano bubble vortex air flotation oil removal device of this utility model can achieve precise and slow slag scraping through the upper oil outlet through the scraper 19, which has minimal disturbance to the hydraulic vortex in the middle of the tank 5, ensuring that the effluent meets the standards and has high stability.

[0041] Example 2

[0042] like Figures 1 to 5 As shown in Example 1, Example 2 of this utility model, a micro-nano bubble vortex flotation oil removal device, also includes a tank 5. A micro-nano bubble tube 17 and a high-pressure water pipe 14 are connected to the lower side of the tank 5. A pressure mixer 3, a micro-nano generator 2, and a water pump 1 are sequentially connected to the inlet of the micro-nano bubble tube 17. A horizontally arranged air outlet pipe 4 is connected to the outlet of the micro-nano bubble tube 17. Bubble outlet holes are evenly distributed on the surface of the air outlet pipe 4. A sleeve 6 is rotatably mounted at the outlet of the high-pressure water pipe 14. Multiple horizontal branch pipes 12 are connected to the outer side of the sleeve 6. A guide vane 13 is provided on the lower side of each horizontal branch pipe 12 and is fixed to the outer side of the sleeve. The outlet of the horizontal branch pipe 12 is tangentially arranged relative to the inner wall of the tank 5. An oil outlet and a water outlet are provided on the upper side of the tank 5, with the oil outlet higher than the water outlet. An oil outlet pipe 11 is connected to the oil outlet, and a water outlet pipe 7 is connected to the water outlet. A weir gate 8 is provided on the inner side of the upper end of the tank body 5. Multiple serrations are provided on the upper edge of the weir gate 8. A scum trough 21 is formed between the outer side of the weir gate 8 and the inner wall of the tank body 1. A scraper 19 is rotatably provided on the lower side of the tank cover 10 of the tank body 5. A scum discharge port is provided at the bottom of the tank body 5.

[0043] Combination Figure 5 Unlike Example 1, in Example 2, a micro-nano bubble vortex flotation oil removal device of this utility model has multiple horizontal branch pipes 12 arranged at equal angles in the circumferential direction.

[0044] This design ensures that multiple horizontal branches 12 can tangentially swirl in different circumferential directions, thus ensuring a more stable swirling field.

[0045] Example 3

[0046] like Figures 1 to 5As shown in Example 2, Example 3 of this utility model, a micro-nano bubble vortex flotation oil removal device, also includes a tank 5. A micro-nano bubble tube 17 and a high-pressure water pipe 14 are connected to the lower side of the tank 5. A pressure mixer 3, a micro-nano generator 2, and a water pump 1 are sequentially connected to the inlet of the micro-nano bubble tube 17. A horizontally arranged air outlet pipe 4 is connected to the outlet of the micro-nano bubble tube 17. Bubble outlet holes are evenly distributed on the surface of the air outlet pipe 4. A sleeve 6 is rotatably mounted at the outlet of the high-pressure water pipe 14. Multiple horizontal branch pipes 12 are connected to the outer side of the sleeve 6. A guide vane 13 is provided on the lower side of each horizontal branch pipe 12 and is fixed to the outer side of the sleeve. The outlet of the horizontal branch pipe 12 is tangentially arranged relative to the inner wall of the tank 5. An oil outlet and a water outlet are provided on the upper side of the tank 5, with the oil outlet higher than the water outlet. An oil outlet pipe 11 is connected to the oil outlet, and a water outlet pipe 7 is connected to the water outlet. A weir gate 8 is provided on the inner side of the upper end of the tank body 5. Multiple serrations are provided on the upper edge of the weir gate 8. A scum trough 21 is formed between the outer side of the weir gate 8 and the inner wall of the tank body 1. A scraper 19 is rotatably provided on the lower side of the tank cover 10 of the tank body 5. A scum discharge port is provided at the bottom of the tank body 5. Multiple horizontal branch pipes 12 are arranged at equal angles in the circumferential direction.

[0047] like Figures 1 to 3 As shown, unlike Example 2, in Example 3, a micro-nano bubble vortex flotation oil removal device of this utility model is provided with a drive motor 9 on the outside of the tank cover 5, and a scraper 19 is connected to the drive end of the drive motor 9.

[0048] The drive motor 9 can rotate the scraper 19 to scrape the floating scum into the scum tank so that the scum can be centrally processed and discharged smoothly from the oil outlet pipe 11.

[0049] This utility model discloses a micro-nano bubble vortex flotation oil removal device, which removes oil by means of the following steps:

[0050] Step 1: Turn on water pump 1, micro / nano generator 2 and pressure mixer 3. Water pump 1 pressurizes the water and the gas introduced from the gas source interface, and the water is efficiently mixed with the gas in the micro / nano generator 2 to output micro / nano bubble water (micro / nano bubble water contains ultra-micro bubbles with a particle size of 1-30μm and micro / nano bubbles with a particle size of 5-500nm). The micro / nano bubbles are then pressurized and output by pressure mixer 3.

[0051] Step 2: The oil-water mixture is output from the horizontal branch pipe 12 through the high-pressure water pipe 14 at a certain tangential high pressure, forming a stable swirling field in the tank 5, which sends larger particles or sludge into the slag discharge port for discharge.

[0052] Step 3: When the micro-nano bubbles generated in Step 1 float to the surface, they adsorb oil droplets and suspended matter. They generate swirling scum through tangential water inlet. The drive motor 9 is started to drive the scraper 19 to rotate. During the rotation of the scraper 19, the scum on the liquid surface is scraped from the serrated gaps on the upper edge of the weir gate 8 into the scum tank 21, and then discharged through the oil outlet pipe 11.

[0053] Example 4

[0054] like Figures 1 to 5 As shown in Example 3, Example 4 of this utility model, a micro-nano bubble vortex flotation oil removal device, also includes a tank 5. A micro-nano bubble tube 17 and a high-pressure water pipe 14 are connected to the lower side of the tank 5. A pressure mixer 3, a micro-nano generator 2, and a water pump 1 are sequentially connected to the inlet of the micro-nano bubble tube 17. A horizontally arranged air outlet pipe 4 is connected to the outlet of the micro-nano bubble tube 17. Bubble outlet holes are evenly distributed on the surface of the air outlet pipe 4. A sleeve 6 is rotatably mounted at the outlet of the high-pressure water pipe 14. Multiple horizontal branch pipes 12 are connected to the outside of the sleeve 6. A guide vane 13 is provided on the lower side of each horizontal branch pipe 12 and is fixed to the outside of the sleeve. The outlet of the horizontal branch pipe 12 is tangentially arranged relative to the inner wall of the tank 5. An oil outlet and a water outlet are provided on the upper side of the tank 5, with the oil outlet higher than the water outlet. An oil outlet pipe 11 is connected to the oil outlet, and a water outlet pipe 7 is connected to the water outlet. A weir gate 8 is provided on the inner side of the upper end of the tank body 5. Multiple serrations are provided on the upper edge of the weir gate 8. A scum trough 21 is formed between the outer side of the weir gate 8 and the inner wall of the tank body 1. A scraper 19 is rotatably provided on the lower side of the tank cover 10 of the tank body 5. A scum discharge port is provided at the bottom of the tank body 5. Multiple horizontal branch pipes 12 are arranged at equal angles in the circumferential direction. A drive motor 9 is provided on the outside of the tank cover 5. The drive end of the drive motor 9 is connected to the scraper 19.

[0055] like Figures 1 to 3 As shown, unlike Example 3, in Example 4 of the present invention, a micro-nano bubble vortex flotation oil removal device, the tank 5 is divided into an upper tank, a middle tank and a lower tank. The lower end of the upper tank and the upper end of the middle tank are detachably assembled together by flange 18, and the upper end of the lower tank and the lower end of the middle tank are detachably assembled together by flange 18.

[0056] The tank body is divided into three parts, each of which is detachably assembled together via flange 18 for easy maintenance.

[0057] Example 5

[0058] like Figures 1 to 3 As shown, unlike Example 4, in Example 5, the inner cavity of the central tank of this utility model transitions in a funnel shape towards both ends.

[0059] The two ends of the central tank are tangent to the center and smoothly connected, absolutely avoiding any steps or right-angle abrupt changes, otherwise the vortex will be instantly destroyed and serious eddies and energy loss will be generated.

[0060] Example 6

[0061] like Figure 1 As shown, unlike Example 5, in Example 6, a micro-nano bubble vortex flotation oil removal device of this utility model, a sludge discharge hopper 15 is connected to the sludge discharge port at the bottom of the tank 5 to prevent sludge from splashing and to facilitate collection.

[0062] Example 7

[0063] like Figures 1 to 3 As shown, unlike Example 6, in Example 7 of the micro-nano bubble vortex flotation oil removal device of this utility model, the lower end of the tank 5 is fixed with a support leg 16, which can ensure that the tank 5 is stably supported and is not easy to shake during operation.

[0064] Example 8

[0065] like Figure 1 and Figure 6 As shown, unlike Example 7, in Example 8, the micro-nano bubble vortex flotation oil removal device of this utility model includes an inner ring pipe 401 and an outer ring pipe 403. The inner ring pipe 401 and the outer ring pipe 403 are connected by multiple connecting pipes 402. The multiple connecting pipes 402 are arranged at equal angles in the circumferential direction. This design can ensure that micro-nano bubbles can flow out from different positions, so as to better adhere to oil droplets and suspended matter in the oil.

Claims

1. A micro / nano bubble cyclone flotation oil removal device, characterized in that, The system includes a tank body, with micro / nano bubble tubes and a high-pressure water pipe connected to the lower side of the tank body. The inlet of the micro / nano bubble tubes is sequentially connected to a pressure mixer, a micro / nano generator, and a water pump. The outlet of the micro / nano bubble tubes is connected to a horizontally arranged air outlet pipe, the surface of which is evenly distributed with bubble outlet holes. The outlet of the high-pressure water pipe is rotatably connected to a horizontal branch pipe, the outlet of which is tangentially arranged relative to the inner wall of the tank body. An oil outlet and a water outlet are provided on the upper side of the tank body, with the oil outlet being higher than the water outlet. A weir is provided on the inner side of the upper end of the tank body, with multiple serrations along the upper edge of the weir. A scum trough is formed between the outer side of the weir and the inner wall of the tank body. A scraper is provided on the lower side of the tank cover, and a scum discharge port is provided at the bottom of the tank body.

2. The micro / nano bubble cyclone flotation oil removal device according to claim 1, characterized in that, There are multiple horizontal branch pipes, which are arranged at equal angles around the circumference. The water flowing out of the outlet of the horizontal branch pipe enters the tank tangentially.

3. The micro / nano bubble vortex flotation oil removal device according to claim 2, characterized in that, Each horizontal branch pipe is equipped with a guide vane on its lower side. The guide vane is fixed to the outside of the sleeve. The horizontal branch pipe is connected to the outside of the sleeve. The sleeve is rotatably mounted to the outlet of the high-pressure water pipe.

4. The micro / nano bubble vortex flotation oil removal device according to claim 3, characterized in that, A drive motor is installed on the outside of the can lid, and the drive end of the drive motor is connected to the scraper.

5. The micro / nano bubble cyclone flotation oil removal device according to claim 4, characterized in that, The tank is divided into an upper tank, a middle tank, and a lower tank. The upper tank is detachably connected to the upper end of the middle tank, and the lower tank is detachably connected to the lower end of the middle tank.

6. The micro / nano bubble cyclone flotation oil removal device according to claim 5, characterized in that, The lower end of the upper tank body is detachably assembled with the upper end of the middle tank body via a flange, and the upper end of the lower tank body is detachably assembled with the lower end of the middle tank body via a flange.

7. The micro / nano bubble cyclone flotation oil removal device according to claim 6, characterized in that, The inner cavity of the middle tank transitions into a trumpet shape towards both ends.

8. The micro / nano bubble cyclone flotation oil removal device according to claim 7, characterized in that, A slag discharge hopper is connected to the slag discharge port at the bottom of the tank.

9. The micro / nano bubble cyclone flotation oil removal device according to claim 8, characterized in that, The lower end of the tank is fixed with a support leg.

Images