An integrated device for oil spill recovery and deep processing under the sea

The design of the integrated subsea oil spill recovery and deep treatment device solves the problems of uneven utilization and clogging of the coalescing components, realizes efficient separation and continuous treatment of subsea oil spills, and improves the service life and operation and maintenance efficiency of the equipment.

CN123041650APending Publication Date: 2026-11-06CHINA NAT OFFSHORE OIL CORP +1
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Patent Information

Application Number
CN202611447179.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-09-17
Publication Date
2026-11-06

AI Technical Summary

Technical Problem

Existing split-type oil spill treatment equipment suffers from problems such as uneven utilization of coalescing components, easy clogging, frequent equipment maintenance, and low oil-water separation accuracy, resulting in poor deep treatment effect of seabed oil spills and low operational continuity.

Method used

An integrated device for seabed oil spill recovery and deep treatment was designed. Through the combination of recovery pipes, demulsifying stirring rods, and coalescing filter layers, the device achieves uniform stirring and rotary distribution of the emulsion, avoids blockage caused by local flushing, improves coalescence effect and separation accuracy, and reduces operation and maintenance costs through a flexible oil discharge structure to adapt to different working conditions.

Benefits of technology

It improves the effectiveness and continuity of deep-sea oil spill treatment, extends the service life of coalescing filter layers, reduces the frequency of downtime maintenance and filter media replacement, and enhances the accuracy of oil-water separation and the adaptability of the equipment.

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Abstract

This application provides an integrated device for seabed oil spill recovery and deep treatment, relating to the field of seabed oil spill remediation equipment. It includes an upper tank, inside which a recovery pipe is fixedly installed. The upper end of the recovery pipe is connected to an external pipeline via a flange. Four rotating rods are rotatably connected to the top wall of the upper tank, and each of the four rotating rods has a demulsification and stirring rod fixedly connected to its surface. A cavity is formed inside the top plate of the upper tank. Through the coordinated arrangement of the recovery pipe, upper tank, motor, second gear, second tooth, rotating ring, first tooth, first gear, rotating rods, demulsification and stirring rods, and cavity, this application achieves gentle demulsification and uniform stirring of the seabed oil spill emulsion. It utilizes low-speed shear force to tear the oil-water interface film, allowing micron-sized oil droplets to be fully released, while avoiding strong turbulence that could cause re-emulsification of the oil and water. This creates stable conditions for subsequent coalescence and separation, thereby improving the deep treatment effect of seabed oil spills.
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Description

Technical Field

[0001] This invention relates to the field of subsea oil spill remediation equipment, and more specifically, to an integrated device for subsea oil spill recovery and deep treatment. Background Technology

[0002] When leaks occur in subsea pipelines or underwater oil production equipment, the spilled oil mixes with seawater and easily forms stable emulsified oily wastewater. The large number of micron-sized micro-emulsified oil droplets in the water are difficult to separate by conventional gravity settling methods, which is the core challenge of marine oil spill remediation.

[0003] Currently, the industry generally adopts split-type processing equipment. After breaking the oil-water emulsion interface through oil-water demulsification and disturbance, the coalescence component is used to achieve the adsorption and coalescence of micro oil droplets, so that the micro oil droplets aggregate, grow and float to the surface for separation, thereby completing the deep purification treatment of oily seawater.

[0004] However, existing split-type oil spill treatment equipment mostly uses fixed-structure tank connection pipes. After demulsification, the oily liquid can only be sent to another tank from a fixed position, continuously flushing a local area of ​​the coalescing module. This cannot fully cover the effective working surface of the coalescing module, resulting in a serious problem of uneven utilization of the coalescing module. After long-term operation, the coalescing filter layer in the liquid flushing area is easily saturated, clogged and ineffective, while the unflushed idle area can never play a coalescing role, significantly shortening the service life of the coalescing module. The equipment needs frequent shutdowns for maintenance and replacement of filter media. At the same time, localized concentrated liquid inflow will cause turbulent flow field in the lower tank. Some fine oil droplets will be discharged directly with the water without coalescing treatment, greatly reducing the oil-water separation accuracy. This leads to poor deep treatment effect of seabed oil spills, low operational continuity and high operation and maintenance costs. In view of this, we propose an integrated device for seabed oil spill recovery and deep treatment to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to solve the problems mentioned in the background section.

[0006] To achieve the aforementioned objectives and address the aforementioned problems, this invention provides an integrated device for seabed oil spill recovery and deep treatment, comprising an upper tank. A recovery pipe is fixedly fitted inside the upper tank, and the upper end of the recovery pipe is connected to an external pipeline via a flange. Four rotating rods are rotatably connected to the top wall of the upper tank, and demulsifying and stirring rods are fixedly connected to the surfaces of each of the four rotating rods. A cavity is formed inside the top plate of the upper tank, and a driving mechanism is installed inside the cavity. A lower tank is located below the upper tank, and the lower tank and the upper tank... Support columns are fixedly connected between the bodies. A liquid outlet pipe is fixedly connected to the lower surface of the upper tank, and a solenoid valve is matched on the liquid outlet pipe. A liquid distribution pipe is rotatably arranged inside the lower tank. A second rotating ring is installed on the outside of the liquid distribution pipe. The liquid distribution pipe is rotatably sleeved inside the lower tank through the second rotating ring. A rotating flange is installed between the upper end of the liquid distribution pipe and the lower end of the liquid outlet pipe. A coalescing mechanism is arranged inside the lower tank. A transmission mechanism is arranged on the outside of the upper end of the liquid distribution pipe. An oil discharge mechanism is arranged inside the lower tank.

[0007] As a preferred technical solution of this application, the coalescing mechanism includes two fixed rings, both of which are fixedly connected to the inside of the lower tank. A central ring is provided inside the fixed ring. A support rod is fixedly connected between the outer circumferential surface of the central ring and the inner circumferential surface of the fixed ring. A coalescing filter layer is provided between the inner circumferential surface of the fixed ring and the outer circumferential surface of the central ring. The coalescing filter layer is located between the two longitudinally arranged support rods.

[0008] As a preferred technical solution of this application, the driving mechanism includes a first rotating ring, which is rotatably connected to the inside of the cavity. The inner ring surface of the first rotating ring is fixedly connected with a first tooth, and the upper ends of the four rotating rods all rotatably penetrate into the inside of the cavity.

[0009] As a preferred technical solution of this application, each of the four rotating rods is fixedly fitted with a first gear at one end inside the cavity, and the four first gears are connected by meshing with a first rotating ring through first teeth.

[0010] As a preferred technical solution of this application, a motor is fixedly connected to the upper surface of the upper tank, and a second gear is rotatably connected to the inside of the cavity through a shaft. The output shaft of the motor rotatably penetrates into the inside of the cavity and is fixedly connected to the shaft of the second gear. A second tooth is fixedly connected to the outer circumferential surface of the first rotating ring, and the second gear is meshed with the first rotating ring through the second tooth.

[0011] As a preferred technical solution of this application, the transmission mechanism includes a third gear, which is fixedly sleeved on the outside of the liquid distribution pipe. A transmission rod is fixedly connected to the lower end of one of the rotating rods. The lower end of the transmission rod rotatably passes through the bottom of the upper tank. A fourth gear is fixedly connected to the lower end of the transmission rod. The fourth gear and the third gear are meshed together.

[0012] As a preferred technical solution of this application, the oil discharge mechanism includes a fixed pipe, which is fixedly sleeved inside the top plate of the lower tank. The upper end of the fixed pipe is connected to an external pipeline, and a telescopic pipe is provided on the lower side of the fixed pipe. A connecting flange is provided between the telescopic pipe and the fixed pipe, and a fixed plate is fixedly connected to the lower end of the telescopic pipe.

[0013] As a preferred technical solution of this application, the surface of the fixing plate is fixedly connected to two connecting plates. A guide rod is fixedly connected to the upper surface of the left connecting plate, and a threaded rod is rotatably connected to the upper surface of the right connecting plate. The upper ends of the guide rod and the threaded rod can movably penetrate through the top plate of the lower tank.

[0014] As a preferred technical solution of this application, a nut is fixedly installed on the upper surface of the lower tank, the threaded rod and the nut are threadedly engaged, and a knob is fixedly connected to the upper end of the threaded rod.

[0015] As a preferred technical solution of this application, a corrugated sleeve is fixedly connected to the upper surface of the connecting plate on the right side. The upper end of the corrugated sleeve is fixedly connected to the top wall of the lower tank, and the corrugated sleeve surrounds the outside of the threaded rod.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: In the scheme of this application: 1. Through the coordinated structure of the recovery pipe, upper tank, motor, second gear, second tooth, rotating ring, first tooth, first gear, rotating rod, demulsifying stirring rod, and cavity, the system achieves gentle demulsification and uniform stirring of the seabed oil spill emulsion. It utilizes low-speed shear force to tear the oil-water interface film, allowing micron-sized oil droplets to be fully released. At the same time, it avoids strong turbulence that could cause the oil and water to re-emulsify, creating stable conditions for subsequent coalescence and separation, thereby improving the deep treatment effect and operational continuity of seabed oil spills. 2. Through the coordination of structures such as the outlet pipe, solenoid valve, rotating flange, distribution pipe, rotating ring, third gear, fourth gear, transmission rod, rotating rod, fixed ring, support rod, central ring, and coalescing filter layer, the uniform distribution of the demulsified liquid is achieved, ensuring that the oily seawater fully covers the effective working surface of the coalescing filter layer. This avoids localized continuous scouring that causes saturation and blockage, and prevents idle areas from failing to function, thus extending the service life of the coalescing filter layer. At the same time, it promotes the adsorption, coalescence, and flotation of fine oil droplets, improving the oil-water separation accuracy and reducing the frequency of downtime for maintenance and filter media replacement. 3. Through the coordination of various structures such as fixed pipes, telescopic pipes, connecting flanges, fixed plates, connecting plates, guide rods, threaded rods, knobs, nuts, corrugated sleeves, lower tanks, support columns, and bases, flexible adjustment of the oil outlet height and stable oil discharge are achieved. Operators can rotate the knob according to the oil level in the lower tank to accurately extend the lower end of the telescopic pipe into the oil layer, avoiding obstruction of water pumping or oil discharge. The corrugated sleeve protects the threaded rod, and the support columns and base ensure the stability of the overall structure, thereby improving the adaptability of the device to different working conditions and reducing operation and maintenance costs. Attached Figure Description

[0017] Figure 1 A schematic diagram of the integrated subsea oil spill recovery and deep treatment device provided in this application; Figure 2 A cross-sectional structural diagram of the integrated subsea oil spill recovery and deep treatment device provided in this application; Figure 3 This is a cross-sectional structural diagram of the upper tank in the integrated subsea oil spill recovery and deep treatment device provided in this application; Figure 4 This is a first schematic cross-sectional view of the lower tank of the integrated subsea oil spill recovery and deep treatment device provided in this application. Figure 5 A schematic diagram of the structure of the fixed ring in the integrated subsea oil spill recovery and deep treatment device provided in this application; Figure 6 A schematic diagram of the fixed pipe in the integrated subsea oil spill recovery and deep treatment device provided in this application; Figure 7 This is a second schematic cross-sectional view of the lower tank of the integrated subsea oil spill recovery and deep treatment device provided in this application. Figure 8 Provided for this application Figure 7 Enlarged view of point A in the middle.

[0018] The image shows: 1. Upper tank; 2. Recovery pipe; 3. Rotating rod; 4. Demulsifying stirring rod; 5. Cavity; 6. Lower tank; 7. Support column; 8. Discharge pipe; 9. Distribution pipe; 10. Rotating flange; 11. Fixed ring; 12. Support rod; 13. Central ring; 14. Coalescing filter layer; 15. Solenoid valve; 16. First rotating ring; 17. First tooth; 18. First gear; 19. Motor; 20. Second gear; 21. Second tooth; 22. Third gear; 23. Transmission rod; 24. Fourth gear; 25. Second rotating ring; 26. Fixed tube; 27. Telescopic tube; 28. Connecting flange; 29. ​​Fixed plate; 30. Connecting plate; 31. Guide rod; 32. Threaded rod; 33. Knob; 34. Nut; 35. Corrugated sleeve. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0020] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the embodiments of the present invention can be combined with each other.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] Please refer to Figures 1-8 An integrated device for seabed oil spill recovery and deep treatment includes an upper tank 1. A recovery pipe 2 is fixedly fitted inside the upper tank 1, and the upper end of the recovery pipe 2 is connected to an external pipeline via a flange. Four rotating rods 3 are rotatably connected to the top wall of the upper tank 1, and demulsifying and stirring rods 4 are fixedly connected to the surfaces of the four rotating rods 3. A cavity 5 is formed inside the top plate of the upper tank 1, and a driving mechanism is installed inside the cavity 5. A lower tank 6 is located below the upper tank 1, and a support column 7 is fixedly connected between the lower tank 6 and the upper tank 1. A liquid outlet pipe 8 is fixedly connected to the lower surface of the tank body 1, and a solenoid valve 15 is matched on the liquid outlet pipe 8. A liquid distribution pipe 9 is rotatably arranged inside the lower tank body 6. A second rotating ring 25 is installed on the outside of the liquid distribution pipe 9. The liquid distribution pipe 9 is rotatably sleeved inside the lower tank body 6 through the second rotating ring 25. A rotating flange 10 is installed between the upper end of the liquid distribution pipe 9 and the lower end of the liquid outlet pipe 8. A coalescence mechanism is provided inside the lower tank body 6. A transmission mechanism is provided on the outside of the upper end of the liquid distribution pipe 9. An oil discharge mechanism is provided inside the lower tank body 6.

[0023] With this setup, the seabed oil spill is transported to the interior of the upper tank 1 via the recovery pipe 2. Then, a drive mechanism drives several rotating rods 3 to rotate at low speed. The rotation of the rotating rods 3 drives the demulsification stirring rods 4 to rotate at low speed, thereby applying a slight shear force to the emulsion. The emulsified oil is coated with a water film (emulsion film). This shear force is used to tear and destroy the stable emulsion interface film between oil and water, releasing the tightly wrapped tiny oil droplets. Moreover, the low-speed stirring can effectively avoid strong turbulence and prevent the re-formation of new emulsions. After the demulsification is completed, the liquid collects at the bottom of the upper tank 1. Subsequently, the solenoid valve 15 on the liquid outlet pipe 8 is opened, and the liquid flows through the liquid outlet pipe 8 into the rotating liquid distribution pipe 9 and is sent downward into the interior of the lower tank 6.

[0024] Furthermore, the coalescing mechanism includes two fixed rings 11, both of which are fixedly connected inside the lower tank 6. A central ring 13 is provided inside the fixed ring 11. A support rod 12 is fixedly connected between the outer circumferential surface of the central ring 13 and the inner circumferential surface of the fixed ring 11. A coalescing filter layer 14 is provided between the inner circumferential surface of the fixed ring 11 and the outer circumferential surface of the central ring 13. The coalescing filter layer 14 is located between the two longitudinally arranged support rods 12.

[0025] Among them, the coalescing filter layer 14 is made of polypropylene oleophilic and hydrophobic fiber material. The fiber is an ultra-fine fiber felt. When oil droplets come into contact with the fiber surface, they will be adsorbed on the fiber filaments, while water does not easily adhere to the fiber surface, and water can pass through the filter layer smoothly.

[0026] With this setup, by rotating the liquid distribution pipe 9, the liquid flowing out of the liquid distribution pipe 9 can be evenly distributed on the surface of the coalescing filter layer 14, thereby achieving local saturation and effectively improving the coalescing effect.

[0027] Furthermore, the drive mechanism includes a first rotating ring 16, which is rotatably connected to the inside of the cavity 5. The inner ring surface of the first rotating ring 16 is fixedly connected with a first tooth 17, and the upper ends of the four rotating rods 3 all rotate through into the inside of the cavity 5.

[0028] Furthermore, each of the four rotating rods 3 has a first gear 18 fixedly fitted at one end inside the cavity 5, and the four first gears 18 are connected by meshing with the first teeth 17 and the first rotating ring 16.

[0029] With this configuration, when the first rotating ring 16 rotates, the first gear 18 can be driven to rotate by the engagement of the first tooth 17, and the rotation of the first gear 18 can drive the rotation of the rotating rod 3.

[0030] Furthermore, a motor 19 is fixedly connected to the upper surface of the upper tank 1, and a second gear 20 is rotatably connected to the inside of the cavity 5 via a shaft. The output shaft of the motor 19 rotates through the inside of the cavity 5 and is fixedly connected to the shaft of the second gear 20. A second tooth 21 is fixedly connected to the outer circumferential surface of the first rotating ring 16, and the second gear 20 is meshed with the first rotating ring 16 via the second tooth 21.

[0031] With this setup, starting the motor 19 via an external controller will drive the rotation of the second gear 20, which in turn will drive the rotation of the first rotating ring 16 with the cooperation of the second teeth 21.

[0032] Furthermore, the transmission mechanism includes a third gear 22, which is fixedly sleeved on the outside of the liquid distribution pipe 9. The lower end of one of the rotating rods 3 is fixedly connected to a transmission rod 23, and the lower end of the transmission rod 23 rotates through the bottom of the upper tank 1. The lower end of the transmission rod 23 is fixedly connected to a fourth gear 24, which meshes with the third gear 22.

[0033] With this setup, the rotation of one of the rotating rods 3 can drive the rotation of the transmission rod 23, which in turn drives the rotation of the fourth gear 24, which in turn drives the rotation of the third gear 22, which in turn drives the rotation of the liquid distribution pipe 9.

[0034] Furthermore, the oil discharge mechanism includes a fixed pipe 26, which is fixedly sleeved inside the top plate of the lower tank 6. The upper end of the fixed pipe 26 is connected to an external pipeline. A telescopic pipe 27 is provided on the lower side of the fixed pipe 26. A connecting flange 28 is provided between the telescopic pipe 27 and the fixed pipe 26. A fixed plate 29 is fixedly connected to the lower end of the telescopic pipe 27.

[0035] Furthermore, two connecting plates 30 are fixedly connected to the surface of the fixing plate 29. A guide rod 31 is fixedly connected to the upper surface of the left connecting plate 30, and a threaded rod 32 is rotatably connected to the upper surface of the right connecting plate 30. The upper ends of both the guide rod 31 and the threaded rod 32 can movably pass through the top plate of the lower tank 6.

[0036] Furthermore, a nut 34 is fixedly installed on the upper surface of the lower tank 6, and the threaded rod 32 is threadedly engaged with the nut 34. A knob 33 is fixedly connected to the upper end of the threaded rod 32.

[0037] With this setup, the operator can rotate the threaded rod 32 using the knob 33, which, in conjunction with the nut 34, will cause the fixing plate 29 to move downwards. The movement of the fixing plate 29 will then cause the telescopic tube 27 to move, allowing the lower end of the telescopic tube 27 to extend into the oil, facilitating subsequent oil extraction. Furthermore, the position of the lower end of the telescopic tube 27 can be flexibly adjusted according to the actual liquid level, effectively improving the flexibility of the device.

[0038] Furthermore, a corrugated sleeve 35 is fixedly connected to the upper surface of the right connecting plate 30. The upper end of the corrugated sleeve 35 is fixedly connected to the top wall of the lower tank 6, and the corrugated sleeve 35 surrounds the outside of the threaded rod 32.

[0039] With this setup, the corrugated sleeve 35 can be used to protect the threaded rod 32.

[0040] The integrated subsea oil spill recovery and deep treatment device provided by this invention is used as follows: First, the seabed oil spill enters the upper tank 1 through the recovery pipe 2. Then, after the external controller starts the motor 19, the output shaft of the motor 19 drives the second gear 20 in the cavity 5 to rotate. The second gear 20 drives the first rotating ring 16 to rotate through the second teeth 21. The first teeth 17 on the inner ring surface of the first rotating ring 16 drive the four first gears 18 to rotate synchronously, thereby causing the four rotating rods 3 and the demulsifying stirring rod 4 to rotate at low speed. The demulsifying stirring rod 4 applies a slight shear force to the emulsion, tearing the stable emulsion interface film between oil and water, releasing micron-sized fine oil droplets, while avoiding strong turbulence that causes re-emulsification. The demulsified liquid gradually collects at the bottom of the upper tank 1.

[0041] Then, the solenoid valve 15 on the outlet pipe 8 is opened. After demulsification, the liquid enters the distribution pipe 9 through the outlet pipe 8 and the rotating flange 10. Since the lower end of one of the rotating rods 3 is fixedly connected to the transmission rod 23, and the fourth gear 24 at the lower end of the transmission rod 23 meshes with the third gear 22 outside the distribution pipe 9, the rotating rod 3 can drive the distribution pipe 9 to rotate through the transmission rod 23, the fourth gear 24 and the third gear 22 when rotating. The distribution pipe 9 is rotated and sleeved inside the lower tank 6 through the second rotating ring 25, and with the cooperation of the rotating flange 10, it can rotate and distribute the liquid downwards, so that the oily seawater is evenly sprayed onto the coalescing filter layer 14 from different directions, avoiding the continuous flushing of local areas by the liquid.

[0042] In addition, when the oily seawater passes through the coalescing filter layer 14, the fine oil droplets are adsorbed by the fiber surface and gradually coalesce and grow, while the water passes through the filter layer smoothly. The coalesced oil droplets float to the surface and form an oil layer on the upper part of the lower tank 6. When discharging oil, the operator rotates the knob 33, which drives the threaded rod 32 to rotate in the nut 34. The fixed plate 29 moves downward under the guidance of the connecting plate 30 and the guide rod 31, and drives the telescopic tube 27 to move downward. The telescopic tube 27 is connected to the fixed tube 26 through the connecting flange 28. After its lower end extends into the upper oil layer, the oil is discharged through the fixed tube 26. The corrugated sleeve 35 protects the threaded rod 32.

[0043] Finally, the treated aqueous phase can be discharged from the lower part of the lower tank 6, thus completing the process of recovering, demulsifying, coalescing, separating and discharging the subsea oil spill.

[0044] In this invention, unless otherwise explicitly 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, an electrical connection, or a connection that allows communication between them; 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] Obviously, the embodiments described above are merely some embodiments of the present invention, not all embodiments. The accompanying drawings show preferred embodiments of the present invention, but do not limit the patent scope of the present invention. The present invention can be implemented in many different forms; rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this invention.

Claims

1. An integrated device for seabed oil spill recovery and deep treatment, characterized in that, The system includes an upper tank (1), inside which a recovery pipe (2) is fixedly fitted. The upper end of the recovery pipe (2) is connected to an external pipe via a flange. Four rotating rods (3) are rotatably connected to the top wall of the upper tank (1). Each of the four rotating rods (3) is fixedly connected to a demulsifying stirring rod (4). A cavity (5) is opened inside the top plate of the upper tank (1). A driving mechanism is installed inside the cavity (5). A lower tank (6) is provided on the lower side of the upper tank (1). A support column (7) is fixedly connected between the lower tank (6) and the upper tank (1). The lower surface of the upper tank (1) is fixedly... A liquid outlet pipe (8) is fixedly connected, and a solenoid valve (15) is matched on the liquid outlet pipe (8). A liquid distribution pipe (9) is rotatably arranged inside the lower tank body (6). A second rotating ring (25) is installed on the outside of the liquid distribution pipe (9). The liquid distribution pipe (9) is rotatably sleeved inside the lower tank body (6) through the second rotating ring (25). A rotating flange (10) is installed between the upper end of the liquid distribution pipe (9) and the lower end of the liquid outlet pipe (8). A coalescence mechanism is provided inside the lower tank body (6). A transmission mechanism is provided on the outside of the upper end of the liquid distribution pipe (9). An oil discharge mechanism is provided inside the lower tank body (6).

2. The integrated device for seabed oil spill recovery and deep treatment according to claim 1, characterized in that, The coalescing mechanism includes two fixed rings (11), both of which are fixedly connected to the inside of the lower tank (6). A central ring (13) is provided inside the fixed ring (11). A support rod (12) is fixedly connected between the outer circumferential surface of the central ring (13) and the inner circumferential surface of the fixed ring (11). A coalescing filter layer (14) is provided between the inner circumferential surface of the fixed ring (11) and the outer circumferential surface of the central ring (13). The coalescing filter layer (14) is located between the two longitudinally arranged support rods (12).

3. The integrated device for seabed oil spill recovery and deep treatment according to claim 2, characterized in that, The driving mechanism includes a first rotating ring (16), which is rotatably connected to the inside of the cavity (5). The inner ring surface of the first rotating ring (16) is fixedly connected with a first tooth (17), and the upper ends of the four rotating rods (3) all rotate through into the inside of the cavity (5).

4. The integrated device for seabed oil spill recovery and deep treatment according to claim 3, characterized in that, The four rotating rods (3) are all fixedly fitted with a first gear (18) at one end inside the cavity (5). The four first gears (18) are connected by meshing with the first teeth (17) and the first rotating ring (16).

5. The integrated device for seabed oil spill recovery and deep treatment according to claim 4, characterized in that, A motor (19) is fixedly connected to the upper surface of the upper tank (1). A second gear (20) is rotatably connected to the inside of the cavity (5) through a shaft. The output shaft of the motor (19) rotates through the inside of the cavity (5) and is fixedly connected to the shaft of the second gear (20). A second tooth (21) is fixedly connected to the outer circumferential surface of the first rotating ring (16). The second gear (20) is meshed with the first rotating ring (16) through the second tooth (21).

6. The integrated device for seabed oil spill recovery and deep treatment according to claim 5, characterized in that, The transmission mechanism includes a third gear (22), which is fixedly sleeved on the outside of the liquid distribution pipe (9). The lower end of one of the rotating rods (3) is fixedly connected to a transmission rod (23). The lower end of the transmission rod (23) rotates through the bottom of the upper tank (1). The lower end of the transmission rod (23) is fixedly connected to a fourth gear (24), which meshes with the third gear (22).

7. The integrated device for seabed oil spill recovery and deep treatment according to claim 6, characterized in that, The oil discharge mechanism includes a fixed pipe (26), which is fixedly sleeved inside the top plate of the lower tank (6). The upper end of the fixed pipe (26) is connected to an external pipe. A telescopic pipe (27) is provided on the lower side of the fixed pipe (26). A connecting flange (28) is provided between the telescopic pipe (27) and the fixed pipe (26). A fixed plate (29) is fixedly connected to the lower end of the telescopic pipe (27).

8. The integrated device for seabed oil spill recovery and deep treatment according to claim 7, characterized in that, The surface of the fixed plate (29) is fixedly connected to two connecting plates (30). The upper surface of the left connecting plate (30) is fixedly connected to a guide rod (31), and the upper surface of the right connecting plate (30) is rotatably connected to a threaded rod (32). The upper ends of the guide rod (31) and the threaded rod (32) can movably pass through the top plate of the lower tank (6).

9. The integrated device for seabed oil spill recovery and deep treatment according to claim 8, characterized in that, A nut (34) is fixedly installed on the upper surface of the lower tank (6), the threaded rod (32) and the nut (34) are threaded together, and a knob (33) is fixedly connected to the upper end of the threaded rod (32).

10. The integrated device for seabed oil spill recovery and deep treatment according to claim 9, characterized in that, A corrugated sleeve (35) is fixedly connected to the upper surface of the connecting plate (30) on the right side. The upper end of the corrugated sleeve (35) is fixedly connected to the top wall of the lower tank (6), and the corrugated sleeve (35) surrounds the outside of the threaded rod (32).