Bionic jellyfish device for recycling marine micro-plastics and implementation method of bionic jellyfish device

Abstract

The invention discloses a bionic jellyfish device for recycling marine micro-plastics and an implementation method of the bionic jellyfish device. The bionic jellyfish device comprises a bionic jellyfish shell, a multi-stage separation assembly, an integrated control module and a power propelling assembly. Multi-stage separation assemblies are adopted for cooperative operation, in the micro-plastic separation module, a filter can rotate forwards and backwards, inner and outer water scrapers are uniquely designed to prevent blockage and assist separation, the micro-plastic rotational flow duration is prolonged through a special structure, the separation efficiency is effectively improved, and it is ensured that micro-plastic smaller than 500 microns smoothly enters the electro-adsorption module for secondary treatment; and the first separation screen is arc-shaped and optimized, large-particle organic matter impurities are accurately intercepted, it is guaranteed that the follow-up treatment process of micro-plastics is smooth, and the overall separation efficiency and precision are greatly improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of garbage recycling, and in particular relates to a bionic jellyfish device for recycling marine microplastics and a method for implementing the device. Background Art

[0002] In today's environmental science field, marine microplastic pollution has become a severe global challenge. With the widespread use and improper disposal of plastic products, a large amount of plastic waste enters the marine environment and gradually breaks down into microplastics under the action of physical, chemical and biological factors. According to relevant studies, microplastics in the ocean are widely distributed, from nearshore waters to the deep ocean, and their number is increasing year by year, posing a serious threat to the balance and stability of the marine ecosystem.

[0003] Microplastics exist in the marine environment in various forms, including particles, fibers, and films. Their particle size is usually less than 5 mm. Microplastics with a particle size of less than 500 microns are difficult to recycle effectively due to their tiny size. These microplastics can be ingested by marine organisms, affecting their digestive system functions, leading to growth stunting, reduced reproductive capacity, and even death. At the same time, microplastics may also absorb harmful substances in the marine environment, such as heavy metals and organic pollutants. As they are passed through the food chain, they may eventually enter the human body, posing a potential risk to human health.

[0004] Screening technology, as a traditional and effective means of particle separation, has been widely used in many fields. Its basic principle is to separate and screen the mixture through a screen with a specific aperture based on the difference in particle size. In industrial production, screening technology is often used in mineral processing, grain screening, building material grading and other fields. It can achieve efficient separation of particles of different sizes and improve product quality and production efficiency. In the field of environmental protection, screening technology has also been used in sewage treatment, garbage disposal and other aspects, playing an important role in the separation and recycling of solid waste.

[0005] However, there are many technical challenges when applying screening technology to the separation and recovery of marine microplastics. The marine environment is complex and changeable, and seawater is corrosive, highly fluid, and contains many impurities, which places higher requirements on the material, structure, and stability of screening equipment. Traditional screening equipment is prone to screen clogging when dealing with marine microplastics. This is because the microplastic particles are small and have special surface properties, which easily adhere to the screen, reducing screening efficiency and increasing equipment maintenance costs. In addition, marine microplastics have a wide range of sources and complex compositions, and microplastics of different types and particle sizes are unevenly distributed in seawater, making it difficult for a single screening technology to achieve efficient and accurate separation.

[0006] At present, there are many shortcomings in the existing marine microplastic separation and recovery devices. Although some devices adopt the screening principle, the screen structure design is unreasonable and cannot effectively adapt to the characteristics of marine microplastics, resulting in low collection efficiency of small-particle microplastics. At the same time, some devices do not fully consider the diversity and complexity of microplastics during the separation process, lack the ability to grade microplastics of different particle sizes, and affect the recovery effect. In addition, when dealing with complex marine environments, the existing devices lack reliability and stability, are prone to failure, and have high maintenance costs. Moreover, in large-scale marine microplastic recovery operations, the processing capacity of existing devices is limited and it is difficult to meet actual needs.

[0007] In summary, given the severity of marine microplastic pollution and the limitations of existing technologies in the separation and recovery of marine microplastics, there is an urgent need to develop an efficient, reliable and marine microplastic separation device based on screening technology to improve the efficiency of microplastic recycling, reduce marine microplastic pollution, and protect the marine ecological environment and human health. Summary of the invention

[0008] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and to provide a marine microplastic recycling bionic jellyfish device and a method for implementing the same.

[0009] The present invention is implemented as follows: In a first aspect, the present invention provides a bionic jellyfish device for recovering marine microplastics, comprising a bionic jellyfish shell, a multi-stage separation component, an integrated control module, and a power propulsion component; Preferably, the bionic jellyfish shell comprises a bionic jellyfish cap and a plurality of bionic jellyfish tentacles; a diversion pipe is provided inside each bionic jellyfish tentacle; one end of the diversion pipe is located at the bottom end of the bionic jellyfish tentacle and is provided with a first separation screen, and the other end is connected to the water inlet of the multi-stage separation component; Preferably, a water pump is provided in the diversion pipe; The multi-stage separation component includes a microplastic separation module, a collection chamber, an electric adsorption separation module, and a second separation screen; The microplastic separation module comprises an outer shell, a filter, an outer wiper, and an inner wiper, wherein the filter is arranged inside the outer shell; the inner wiper is arranged inside the filter; the outer wiper is arranged between the filter and the outer shell; wherein the filter is driven by a first motor and can rotate forward or reversely; Preferably, the inner wiper and the outer wiper each independently include a downward spiraling guide blade; the edge of the guide blade of the outer wiper is offset from the edge of the guide blade of the inner wiper in the rotation direction, and the offset angle is preferably 1°-30°.

[0010] Preferably, the bottom of the collecting chamber adopts a detachable structure.

[0011] Preferably, the upper end of the filter serves as a water inlet, the lower end serves as a water outlet, and the side wall thereof is provided with a plurality of filtering holes.

[0012] The collecting chamber is in communication with the lower end of the outer wiper; The water inlet of the electric adsorption separation module is connected to the lower end of the inner wiper; The second separation screen is located at the water outlet of the electric adsorption separation module.

[0013] Preferably, the electro-adsorption separation module comprises an electro-adsorption shell, at least one negative conductive metal, at least one positive conductive metal, an insulating layer, and a plurality of electro-adsorption filter elements; the insulating layer is located in the electro-adsorption shell, and at least one negative conductive metal and at least one positive conductive metal are distributed between the insulating layer and the electro-adsorption shell; the plurality of electro-adsorption filter elements are arranged inside the insulating layer, and there is a gap layer between adjacent electro-adsorption filter elements, and the gap layer forms a particle passing channel of the electro-adsorption filter element; one end of the particle passing channel faces the water inlet of the electro-adsorption filter element, and the other end faces the water outlet of the electro-adsorption filter element.

[0014] Each electro-adsorption filter element includes a positive electrode sheet, a negative electrode sheet, and an insulating layer located between the positive electrode sheet and the negative electrode sheet; the polarities of the electrode sheets of adjacent electro-adsorption filter elements close to the gap layer are opposite; The second separation screen is located at the water outlet of the electric adsorption separation module.

[0015] The integrated control module is used to control the water pump, the first motor, and the second motor; The power propulsion assembly includes an inner fixing frame, an outer fixing frame, a connecting rod, a second motor, and a propeller; the inner fixing frame is arranged inside the outer fixing frame and is used to fix a plurality of bionic jellyfish tentacles; the bionic jellyfish tentacles are fixed to the inner fixing frame through the connecting rod; a propeller is arranged on the connecting rod; and the motor is used to drive the propeller.

[0016] In a second aspect, the present invention provides a method for recovering marine microplastics based on the above-mentioned bionic jellyfish device, comprising the following steps: Step 1: According to the preset planned route, the power propulsion assembly is controlled by the integrated control module to enable the bionic jellyfish device to move on the sea surface.

[0017] Step 2: The water flows through the first separation screen into the diversion pipe. At this time, large organic impurities are intercepted outside the first separation screen, and the unfiltered microplastic particles follow the water flow through the diversion pipe into the multi-stage separation component; Step 3: The multi-stage separation component performs multi-stage separation on the impurities in the water flow: The water flows from the water inlet of the microplastic separation module to the outer wiper, and enters the inner wiper through the filter hole of the filter under the action of cyclonic pressure; the water flow on the inner wiper finally flows into the electric adsorption separation module, and the large-size microplastics separated by the filter enter the collection chamber through the guide blade of the outer wiper; The water entering the electrosorption separation module flows through the gap layer of each electrosorption filter element. Under the action of the electric field force, the microplastic particles are adsorbed on the gap layer of each adsorption chip and the negative electrode sheet; The water flow after electrical adsorption separation is finally filtered through the separation filter and then flows out.

[0018] The beneficial effects of the present invention are: The present invention adopts multi-stage separation components to work together. In the microplastic separation module, the filter can rotate forward and backward. The unique design of the internal and external wipers prevents clogging and assists separation. The special structure prolongs the vortex time of microplastics, effectively improving the separation efficiency and ensuring that microplastics smaller than 500 microns can smoothly enter the electrosorption module for secondary treatment. The arc shape of the first separation screen is optimized to accurately intercept large-particle organic impurities, ensuring a smooth subsequent treatment process for microplastics and greatly improving the overall separation efficiency and accuracy.

[0019] The guide blade used in the inner wiper of the filter of the present invention spirals downward to the water outlet of the filter. During the spiral motion, the water flow can exert pressure on the microplastics and debris stuck in the filter holes, causing them to loosen and fall off. It can also lengthen the flow path of the water flow, thereby increasing the residence time of the subsequent seawater and the electro-adsorption filter element. The guide blade used in the outer wiper spirals downward around the outside of the filter, and is offset in the direction of rotation from the edge of the guide blade of the inner wiper. When the filter rotates, the edge of the guide blade of the outer wiper can impact and remove residual impurities in the filter holes of the filter. The two work together to effectively solve the problem of easy clogging of the screen of traditional screening equipment, avoid reducing the screening efficiency and increasing maintenance costs due to clogging, and ensure the sustainable and stable operation of the device.

[0020] (2) The electro-adsorption filter element of the present invention utilizes an electric field to adsorb microplastics, and the electrodes are not easily clogged, thereby ensuring continuous and efficient adsorption. The detachable design simplifies the collection process, facilitates the separation of microplastics and the recycling of the filter element, and is environmentally friendly and economical.

[0021] (3) The present invention adopts the adaptability and stability of the bionic jellyfish shell lifting device; the integrated control module realizes intelligent control and optimizes operation; the power propulsion component ensures stable movement and efficient operation according to the planned route, effectively expanding the recovery range and improving efficiency, and has both environmental protection and practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the structure of a bionic jellyfish device for recycling marine microplastics provided in an embodiment of the present invention.

[0024] Figure 2 It is a schematic diagram of the structure of a power propulsion assembly provided in an embodiment of the present invention.

[0025] Figure 3 It is a schematic diagram of the structure of a multi-stage separation component provided in an embodiment of the present invention.

[0026] Figure 4 It is a schematic diagram of the structure of a microplastic separation module provided in an embodiment of the present invention.

[0027] Figure 5 It is a schematic diagram of the structure of the internal wiper in the microplastic separation module provided in an embodiment of the present invention.

[0028] Figure 6 It is a schematic diagram of the structure of the electric adsorption separation module provided in an embodiment of the present invention.

[0029] Markings in the figure: 1. Bionic jellyfish shell; 11. Bionic jellyfish umbrella cap; 12. Bionic jellyfish tentacle; 121. Diversion pipe; 122. Water pump; 123. First separation screen; 2. Multi-stage separation component; 21. Microplastic separation module; 211. Outer shell; 212. Filter; 213. External wiper; 214. Internal wiper; 22. Collection chamber; 23. Electro-adsorption separation module; 231. Electro-adsorption outer shell; 232. Negative conductive metal; 233. Positive conductive metal; 234. Insulating layer; 235. Electro-adsorption filter element; 2351. Positive electrode sheet; 2352. Negative electrode sheet; 2353. Insulating layer; 24. Second separation screen; 3. Integrated control module; 41. Internal fixing frame; 42. External fixing frame; 43. Connecting rod; 44. Second motor; 45. Propeller. DETAILED DESCRIPTION

[0030] The following will comprehensively and in-depth explain the specific implementation methods of the marine microplastic recycling bionic jellyfish device and its implementation method of the present invention in conjunction with the accompanying drawings, aiming to enable those skilled in the art to clearly understand and accurately implement the present invention.

[0031] This embodiment provides a bionic jellyfish device for recycling marine microplastics, see Figure 1The device comprises a bionic jellyfish shell 1, a multi-stage separation component 2, an integrated control module 3, and a power propulsion component 4; The bionic jellyfish shell 1 is the external structure of the whole device, which includes a bionic jellyfish umbrella cover 11 and a plurality of bionic jellyfish tentacles 12. The bionic jellyfish umbrella cover 11 is made of high-strength, corrosion-resistant and flexible materials, such as high-performance engineering plastics or composite materials, to ensure that it can withstand harsh conditions such as water flow impact and seawater corrosion in the marine environment, while providing effective protection for internal components.

[0032] Each bionic jellyfish tentacle 12 is provided with a diversion pipe 121; one end of the diversion pipe 121 is located at the bottom end of the bionic jellyfish tentacle 12 and is provided with a first separation screen 123, and the other end is connected to the water inlet of the multi-stage separation component 2 through a conduit 13 located in the bionic jellyfish umbrella cover 11.

[0033] The diversion pipe 121 uses a pipe with a smooth inner wall to reduce water flow resistance and improve water flow transmission efficiency. The water pump 122 installed in the diversion pipe 121 uses a submersible water pump suitable for use in the marine environment, which has the characteristics of high efficiency, energy saving, corrosion resistance, and good waterproof performance. The power and flow of the water pump 122 can be selected according to actual needs to ensure that it can operate stably under different marine environmental conditions and effectively drive the water flow to carry microplastic particles into the subsequent treatment process.

[0034] The first separation screen 123 located at the bottom of the guide pipe 121 adopts an arc structure with a span of 2a, an arch height of h, and a radius of R. , and the angle between the arc separation screen and the conduit can be set to 10-20 degrees, which is obtained through precise calculation and optimized design. In the manufacturing process, high-strength, corrosion-resistant and good filtering performance metal or synthetic materials are selected, and formed through precision machining technology to ensure that the screen aperture is uniform and the surface is smooth, which can effectively intercept large particles of organic impurities and prevent them from entering the device to cause blockage or interfere with the subsequent separation process, and minimize the obstruction to water flow and microplastic particles, so that microplastic particles can smoothly enter the multi-stage separation component 2 under the action of water flow. In one embodiment, the aperture of the first separation screen is 5 mm.

[0035] The multi-stage separation assembly 2 includes a microplastic separation module 21, a collection chamber 22, an electrosorption separation module 23, and a second separation screen 24, see Figure 3 ; See also Figure 4, the microplastic separation module 21 includes an outer shell 211, a filter 212, an outer wiper 213, and an inner wiper 214. The filter 212 is arranged inside the outer shell 211, and the filter 212 and the outer shell 211 are cylindrical structures of different sizes on the same axis. The inner wiper 214 is arranged inside the filter 212, and the outer wiper 213 is arranged between the filter 212 and the outer shell 211. There is a very small gap between the outer wiper 213 and the filter 212, so that the filter 212 can be rotated, and the same applies to the inner wiper 214. The filter 212 is cylindrical or inverted truncated cone-shaped, and its filter mesh aperture is 500 microns, which can filter out microplastics and other residues with a diameter within this range. When water passes through the filter 212, microplastics and debris are blocked by the filter mesh, and the filtered water continues to flow to the electrosorption module. If the filter 212 adopts an inverted truncated cone structure design, that is, the lower opening is small, this structure helps to form a stable cyclone field when water flows in, thereby enhancing the separation effect. The material is selected from high-strength stainless steel or engineering plastics with good corrosion resistance and mechanical properties to ensure that it will not be deformed or damaged when exposed to seawater for a long time and subjected to water flow impact. The pore size distribution of the filter holes on the filter 212 is carefully designed, and the appropriate pore size range is selected according to the particle size distribution characteristics of the microplastic particles.

[0036] The inner wiper 214 is working, and the first motor drives the filter 212 to rotate in the outer shell 211, and the rotational power can be provided by the first motor. The inner wiper 214 is located inside the filter 212 and is stationary. The inner wiper 214 includes a central column and a first guide blade in a downward spiral, and the first guide blade extends from the central column to the inner wall of the filter 212, and is in a convex curve shape. When the first motor drives the filter 212 to rotate, the water inside it rotates therewith, and the first guide blade guides part of the rotating water to flow back. The backflowing water exerts pressure on the microplastics and debris stuck in the filter holes of the filter 212, causing them to loosen and fall off, thereby preventing the filter 212 from being blocked.

[0037] The outer wiper 213 is working, and the outer wiper 213 includes a second guide blade in a downward spiral; the second guide blade is spirally wrapped around the outside of the filter 212, and its leading edge and the trailing edge of the first guide blade of the inner wiper 214 are offset in the rotation direction, for example, 1°-30°, and there is a certain distance between the leading edge and the filter 212, which does not affect the rotation of the filter 212. When the filter 212 rotates, the leading edge of the outer wiper 213 hits and removes the microplastics and debris that are still stuck in the pores of the filter 212 and are not washed away by the backflow. The outer wiper 213 guides the removed microplastics and debris to the detachable collection chamber 22. The detachable collection chamber 22 is located at the bottom of the outer shell 211, is detachable, and is used to collect the microplastics and debris filtered out by the filter 212.

[0038] The filter 212 is made of a metal wire mesh or synthetic fiber filter with certain strength and good filtering performance. The pore size of the filter is strictly controlled to be 500 microns. It can effectively collect large-sized microplastic particles separated from the microplastic separation module 21, while allowing smaller-sized microplastic particles and seawater to continue to pass through and enter the next separation link.

[0039] The overall structural design of the collection chamber 22 should be easy to disassemble and clean, so that the collected microplastics can be cleaned and recycled regularly.

[0040] See also Figure 6 The electro-adsorption separation module 23 includes an electro-adsorption shell 231, at least one negative conductive metal 232, at least one positive conductive metal 233, an insulating layer 234, and multiple electro-adsorption filter elements 235; the insulating layer 234 is located in the electro-adsorption shell 231, and at least one negative conductive metal 232 and at least one positive conductive metal 233 are distributed between the insulating layer 234 and the electro-adsorption shell 231; the multiple electro-adsorption filter elements 235 are arranged inside the insulating layer 234, and there is a gap layer between adjacent electro-adsorption filter elements 235, and the gap layer forms a particle passing channel for the electro-adsorption filter element 235; one end of the particle passing channel is toward the water inlet of the electro-adsorption filter element 235, and the other end is toward the water outlet of the electro-adsorption filter element 235.

[0041] The electrosorption separation module 23 is one of the core components. The electrosorption filter element 235 includes a positive electrode sheet 2351, a negative electrode sheet 2352, and an insulating layer 2353 located between the positive electrode sheet 2351 and the negative electrode sheet 2352; the polarities of the electrode sheets of adjacent electrosorption filter elements 235 close to the gap layer are opposite; The positive electrode sheet 2351 of each electric adsorption filter element 235 contacts the positive electrode conductive metal 233, but not the negative electrode conductive metal 232; the negative electrode sheet 2352 contacts the negative electrode conductive metal 232, but not the positive electrode conductive metal 233. The electric isolation layer 234 is disposed between the electric adsorption filter element 235 and the conductive metal, and is cylindrical in shape and has contact holes. For example, there are holes at the contact point between the positive electrode sheet 2351 and the positive electrode conductive metal 233 for contact, and the same is true for the negative electrode. Since the conductive metal provides electricity to the electric adsorption filter element 235, it can also be replaced by other supply methods such as wires.

[0042] The positive electrode sheet 2351 is made of titanium-based mixed metal oxide (TiMMO), the negative electrode sheet 2352 is made of a carbon electrode, and the insulating layer 2353 is made of a material that is resistant to high temperatures and has excellent insulating properties (such as ceramics, high-performance plastics, etc.).

[0043] The gap layer can be air or filled with materials (such as graphite felt, granular activated carbon (GAC), carbon foam or a combination thereof), which optimizes the electrode material and electric field distribution, enhances the performance and life of the carbon material, reduces carbon corrosion, and improves the ability to remove microplastics.

[0044] As a cathode material, TiMMO has good conductivity and stability in the electrochemical process. Under the action of the electric field, it can effectively conduct current and provide an electron transfer channel for the electrochemical reaction. At the same time, its surface characteristics are conducive to the conduction of certain redox reactions. As a negative electrode, the carbon material has a rich pore structure and a large specific surface area, which enables it to be polarized under the action of the electric field and produce a strong electric field gradient. Under the action of the electric field, microplastic particles will attract each other due to their charge, and thus gather together and be captured by the gap layer material. The gap layer filling material will be polarized under the action of the electric field, generating an electric field gradient. Charged particles (small-size microplastic particles) will move to the electrode surface driven by the electric field force. Since the carbon electrode surface has a certain adsorption capacity, the charged particles will be adsorbed on the electrode surface, thereby achieving removal from the water.

[0045] The positive conductive metal and the negative conductive metal can be connected to the power supply by wires to ensure that a stable and uniform electric field can be generated in the adsorption chip after the power supply is connected. The power supply can be a DC power supply with adjustable output voltage and current. According to the actual microplastic pollution situation and adsorption effect, the electric field strength can be flexibly adjusted to achieve the best adsorption and separation effect.

[0046] The second separation screen 24 is located at the water outlet of the electro-adsorption separation module 23, and the aperture of the screen hole is selected according to the residual microplastic particles after electro-adsorption separation (for example, it can be set to a smaller aperture range to further intercept microplastic particles that may not be completely adsorbed), ensuring that the content of microplastic particles in the water flow after electro-adsorption separation is reduced to a minimum. The material of the second separation screen 232 is also required to be corrosion-resistant and high-strength to ensure that it will not be damaged or deformed during long-term use.

[0047] The integrated control module 3 includes a main control unit, a multi-axis motor controller, and a communication module. Main control unit: usually a high-performance microprocessor or programmable logic controller (PLC), etc. As the core of the entire control system, it receives signals from various sensors, performs calculations based on preset control algorithms, and then issues instructions to the multi-axis motor controller. Commonly used ARM architecture processors, with their powerful computing power and rich interfaces, can well undertake the main control tasks.

[0048] Multi-axis motor controller: A device specifically used to control the motors corresponding to each independent propeller. It has multiple independent control channels and can accurately adjust the speed, direction and other parameters of each motor. It can convert electrical signals into appropriate drive signals to drive the motor according to the instructions sent by the main control unit. There are many models available on the market. Some advanced multi-axis motor controllers also have functions such as fault detection and overload protection.

[0049] Communication module: realizes data interaction with external devices (such as host computer monitoring system, remote control, etc.). Common communication methods include wired Ethernet, wireless Wi-Fi, Bluetooth, or underwater acoustic communication module, etc. For example, the operator can use the communication module to send steering and movement instructions of the vehicle to the main control unit through a wireless remote control device.

[0050] The main control unit performs calculations based on preset mission objectives (such as sailing along a predetermined route, arriving at a designated recovery point, turning in place, etc.) and pre-processed sensor data. For example, if the recovery device is to turn left to a certain angle, the main control unit will calculate the required speed and steering adjustment of each propeller motor based on the current yaw angle and the target yaw angle through the corresponding control algorithm (such as PID control algorithm, fuzzy control algorithm and other common algorithms), and generate specific control instructions. These control instructions will be packaged in the format corresponding to each channel of the multi-axis motor controller and prepared to be sent to the multi-axis motor controller.

[0051] After receiving the control command from the main control unit, the multi-axis motor controller will parse the command content, perform power amplification and other processing on the corresponding speed and steering control signals for each independent motor control channel (to ensure that the signal strength is sufficient to drive the motor to work as required), and then output the appropriate drive signal to the corresponding motor.

[0052] After receiving the driving signal, each motor adjusts its own speed and direction according to the instructions, driving the propeller connected to it to produce corresponding changes in thrust. The thrust size and direction of multiple propellers change in this coordinated manner, enabling the recovery device to achieve the expected motion state changes such as turning and lateral shifting, and complete the corresponding control task.

[0053] See also Figure 2 The power propulsion assembly 4 includes an inner fixing frame 41, an outer fixing frame 42, a support arm, a motor 44, a propeller 45, and a connecting rod 43; the inner fixing frame 41 is arranged inside the outer fixing frame 42, and is used to fix multiple bionic jellyfish tentacles 12; the outer fixing frame 42 is connected to the inner fixing frame 41 through the support arm; the support arm is provided with a propeller 45; the bionic jellyfish tentacle 12 is fixed to the inner fixing frame 41 through the connecting rod 43; the motor 44 is used to drive the propeller 45.

[0054] The present invention adopts a vector propulsion system, which realizes the steering of the recovery device by changing the thrust direction of the propeller, rather than relying solely on traditional steering surfaces. The vector propulsion system is usually composed of four propellers, each of which can independently control the thrust direction. By coordinating the thrust size and direction of each propeller, the recovery device can turn and move sideways in situ, and has higher maneuverability and flexibility.

[0055] Since the vector propulsion system is equipped with four independently controllable propellers, each driven by an independent motor, the multi-axis motor controller can accurately control the speed and direction of each motor. For example, in the underwater microplastic recycling navigation scenario, it can coordinate four groups of motors at the same time according to instructions to achieve a complex power output combination.

[0056] It corresponds one to one with the propeller in the vector propulsion system and provides power for the propeller rotation. The type of motor is selected according to the actual application scenario. The brushless DC motor has the advantages of high efficiency, long life, and good control accuracy. It is often used in the vector propulsion system of underwater vehicles with high control requirements.

[0057] In one implementation method, a flow sensor can be installed on the surface of the device to detect the speed and direction of the surrounding water flow. Since the water flow will affect the movement of the vehicle, understanding the water flow conditions will help to more accurately control the vector propulsion system to offset the water flow interference and ensure accurate steering and stable movement.

[0058] The inner fixing frame 41, the outer fixing frame 42 and the support arm are made of high-strength aluminum alloy or stainless steel, and are assembled into a stable frame structure by precision welding or mechanical connection, providing a reliable installation foundation and support for the second motor 44, the propeller 45 and the connecting rod 43. The design of the frame structure should fully consider the center of gravity distribution and fluid mechanics performance of the device to ensure the stability and flexibility of the device during propulsion.

[0059] The second motor 44 is a waterproof and corrosion-resistant motor suitable for use in a marine environment, and its power and torque are reasonably selected according to the overall size, weight and required propulsion of the device. The second motor 44 is connected to the propeller 45 through a high-precision coupling or gear transmission mechanism to ensure high efficiency and stability of power transmission.

[0060] Propeller 45 uses a specially designed marine propulsion propeller, whose blade shape, pitch and diameter and other parameters are optimized according to the principles of fluid mechanics to improve propulsion efficiency and reduce energy loss. Propeller 45 is made of high-strength, corrosion-resistant alloy materials (such as nickel-aluminum bronze, etc.), and the surface is specially treated (such as anti-corrosion coating, polishing, etc.) to enhance its durability and corrosion resistance in seawater.

[0061] This embodiment also provides a method for recycling marine microplastics based on the above device, including: Step S1: Device travel control Before the device is put into use, the operator pre-plans the route of the device through the host computer software or the human-computer interaction interface according to the marine environmental characteristics of the target sea area (such as water flow direction, flow rate, water depth, terrain, etc.) and the distribution of microplastic pollution, and inputs the relevant parameters into the integrated control module 3. After starting the device, the integrated control module 3 accurately controls the second motor 44 in the power propulsion component 4 to start according to the preset route parameters. The second motor 44 drives the propeller 45 to rotate at a suitable speed, and the propeller 45 generates thrust in the sea water to drive the bionic jellyfish device to move forward steadily on the sea surface according to the predetermined route. During the process of travel, the integrated control module 3 monitors the location information of the device in real time (which can be obtained through the GPS positioning system or other marine positioning technology, and compared with the preset route, and adjusts the speed and direction of the second motor 44 in time according to the deviation to ensure that the device always accurately travels along the planned route, efficiently covers the target sea area, and improves the efficiency and comprehensiveness of microplastic recycling.

[0062] Step S2: Preliminary separation and collection of microplastics After the device reaches the predetermined operation area, the integrated control module 3 starts the water pump 122 in the diversion pipe 121. The water pump 122 starts working, generating suction, so that the surrounding seawater carries microplastic particles to flow to the first separation screen 123 of the bionic jellyfish tentacle 12. When the water flows through the first separation screen 123, due to the aperture design of the screen, large organic impurities such as branches, leaves, and large algae are effectively intercepted outside the screen to prevent them from entering the device and causing blockage or interfering with the subsequent separation process. The unfiltered microplastic particles and seawater, under the action of the water pump 122, smoothly pass through the first separation screen 123 and enter the diversion pipe 121. Driven by the water pump 122, the water flow entering the diversion pipe 121 flows along the diversion pipe 121 to the conduit 13 in the bionic jellyfish umbrella cover 11 at a certain flow rate and pressure, and finally enters the multi-stage separation component 2 for further separation treatment.

[0063] Step S3: Multi-stage separation component workflow Cyclone separation: The water flow entering the microplastic separation module 21 first flows along the set flow path (external wiper 213) to the filter 212 and enters the internal wiper 214. The filter 212 is controlled by the first motor to rotate forward or reversely, and the water rotates inside the internal wiper 214. The spiral curved wall guides part of the rotating water to flow back. The returned water exerts pressure on the microplastics and debris stuck in the filter holes of the filter 212, causing them to loosen and fall onto the guide blades of the external wiper 213, thereby preventing the fine filter from being blocked.

[0064] The approximate movement direction of seawater with microplastic particles smaller than 500 microns is affected by the inner wiper 214 (consistent with the flow path set by the outer wiper 213), and the rotation direction of the filter 212 can be clockwise (i.e., forward rotation, speeding up the movement speed of seawater) or counterclockwise (i.e., reverse rotation, slowing down the movement speed of seawater). For example, this embodiment is a clockwise spiral motion trend to achieve the speed of seawater before entering the electrosorption module. For example, if there are many microplastic particles smaller than 500 microns in seawater, the rotation direction of the filter 212 can be counterclockwise, slowing down the speed of seawater before entering the electrosorption module and increasing the reaction time.

[0065] The first guide blade of the inner wiper 214 adopts a spiral line trend, which makes the flow path of seawater in the filter element longer and more complicated. Compared with straight-line flow, seawater has more opportunities to contact the surface of the electro-adsorption filter element. The spiral line trend makes the seawater stay in the filter element for a relatively longer time, which increases the action time of the microplastic particles in the electric field accordingly. Under the action of the electric field, the microplastic particles constantly roll, rotate and collide in it. This movement helps to make the charge distribution on the surface of the particles more uniform, making it easier to be polarized by the electric field. The electrostatic attraction between the polarized particles and the electro-adsorption filter element is enhanced, making the particles easier to be adsorbed on the surface of the filter element.

[0066] In a (straight plate) electric adsorption filter, if the seawater flows in a straight line, the seawater flow rate may be too fast in some areas, forming a short-circuit channel, resulting in some areas of the filter failing to fully exert the adsorption effect. The spiral line trend can make the seawater more evenly distributed on the entire filter cross section, avoiding the short-circuit area with too fast flow rate, allowing all parts of the filter to fully contact with the seawater and adsorb, thereby improving the overall utilization rate of the filter.

[0067] The large-sized microplastics separated by the filter 212 enter the collection chamber 22 through the second guide blade of the outer wiper 213. Since the second guide blade of the outer wiper 213 adopts a downward spiral trend, the large-sized microplastics will not return from the lower end to the upper end.

[0068] Primary collection: The large-sized microplastic particles that enter the collection chamber 22 are regularly disassembled and cleaned (for example, at regular intervals or after a certain amount of microplastics are collected according to actual operating conditions), and the collected large-sized microplastic particles are recycled to prevent excessive accumulation of microplastics in the collection chamber 22 that affects the normal operation of the device.

[0069] Electrosorption separation: When the water flow entering the electrosorption separation module 23 flows through the electrosorption filter element 235, due to the electric field effect generated after the positive conductive metal 233 and the negative conductive metal 232 are connected to the power supply, the microplastic particles, as charged or polarizable particles, will be affected by the electric field force. According to the calculation formula of the electric field force F=q×E (where F is the electric field force, q is the charge or polarized charge carried by the microplastic particles, and E is the electric field strength), the microplastic particles are driven by the electric field force to move toward the positive electrode sheet 2351 and the negative electrode sheet 2352 of the electrosorption filter element 235 and are adsorbed on the electrode surface. During the electrosorption separation process, the operator can adjust the output voltage and current of the power supply through the integrated control module 3 according to the actual microplastic pollution situation (such as microplastic concentration, particle size distribution, composition, etc.) and adsorption effect, thereby changing the electric field strength to achieve the best adsorption separation effect. At the same time, in order to ensure the stability and efficiency of the electrosorption separation process, the electrosorption filter element 235 is inspected and maintained regularly (such as at regular intervals) to clean impurities that may be adsorbed on the electrode surface and ensure the adsorption performance of the electrode.

[0070] The water flow after the electro-adsorption separation is finally filtered through the second separation screen 24. With its high-precision filtration aperture, the second separation screen 24 can effectively intercept the tiny particle impurities and microplastic particles that may still remain after the previous multi-stage separation treatment, ensuring that the water discharged from the device meets the predetermined environmental protection standards. The filtered water can be directly discharged back to the marine environment without causing secondary pollution to the marine ecosystem. Regularly check the second separation screen 24 to ensure its long-term stable filtration performance and ensure that the separation and recovery effect of the entire device is always in the best state.

[0071] Through the above detailed and comprehensive specific implementation methods, the marine microplastic recycling bionic jellyfish device of the present invention and its implementation method can effectively recycle microplastics in a complex and changeable marine environment, give full play to the synergistic effect of each component, overcome many problems existing in the prior art, and realize efficient, environmentally friendly, and intelligent microplastic recycling operations. In the actual application process, the various parameters and components of the device can be further optimized and adjusted according to the specific conditions and actual needs of different sea areas to continuously improve the performance and adaptability of the device, and provide a practical technical solution to solve the problem of marine microplastic pollution.

[0072] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A bionic jellyfish device for recycling marine microplastics, characterized in that: It comprises a bionic jellyfish shell (1), a multi-stage separation component (2), an integrated control module (3), and a power propulsion component (4); The multi-stage separation component (2) comprises a microplastic separation module (21), a collection chamber (22), an electric adsorption separation module (23), and a second separation screen (24); The microplastic separation module (21) comprises an outer shell (211), a filter (212), an outer wiper (213), and an inner wiper (214); the filter (212) is arranged inside the outer shell (211); the inner wiper (214) is arranged inside the filter (212); the outer wiper (213) is arranged between the filter (212) and the outer shell (211); wherein the filter (212) is driven by a first motor and can rotate in a forward or reverse direction; The collecting chamber (22) is in communication with the lower end of the outer wiper (213); The water inlet of the electric adsorption separation module (23) is in communication with the lower end of the inner wiper; The second separation screen (24) is located at the water outlet of the electric adsorption separation module (23).

2. The device according to claim 1, characterized in that: The bionic jellyfish shell (1) comprises a bionic jellyfish cap (11) and a plurality of bionic jellyfish tentacles (12); a diversion pipe (121) is provided inside each bionic jellyfish tentacle (12); one end of the diversion pipe (121) is located at the bottom end of the bionic jellyfish tentacle (12) and is provided with a first separation screen (123); the other end is connected to the water inlet of the multi-stage separation component (2).

3. The device according to claim 2, characterized in that: A water pump (122) is provided in the diversion pipe (121).

4. The device according to claim 1, characterized in that: The inner wiper (214) and the outer wiper (213) each independently include a downward spiral guide scraper blade.

5. The device according to claim 1, characterized in that: The edge of the guide blade of the outer wiper (213) is offset from the edge of the guide blade of the inner wiper in the rotation direction.

6. The device according to claim 5, characterized in that: The upper end of the filter (212) serves as a water inlet, and the lower end serves as a water outlet, and a plurality of filtering holes are provided on its side wall.

7. The device according to claim 5, characterized in that: The bottom of the collecting chamber (22) adopts a detachable structure.

8. The device according to claim 5, characterized in that: The electrosorption separation module (23) comprises an electrosorption shell (231), at least one negative electrode conductive metal (232), at least one positive electrode conductive metal (233), an insulating layer (234), and a plurality of electrosorption filter elements (235); the insulating layer (234) is located in the electrosorption shell (231), and at least one negative electrode conductive metal (232) and at least one positive electrode conductive metal (233) are distributed between the insulating layer (234) and the electrosorption shell (231); the plurality of electrosorption filter elements (235) are arranged inside the insulating layer (234), and there is a gap layer between adjacent electrosorption filter elements (235), and the gap layer forms a particle passing channel of the electrosorption filter element (235); One end of the particle passage faces the water inlet of the electric adsorption filter element (235), and the other end faces the water outlet of the electric adsorption filter element (235); Each electric adsorption filter element (235) includes a positive electrode sheet (2351), a negative electrode sheet (2352), and an insulating layer (2353) located between the positive electrode sheet (2351) and the negative electrode sheet (2352); the polarities of the electrode sheets close to the gap layer of adjacent electric adsorption filter elements (235) are opposite.

9. The device according to claim 5, characterized in that: The power propulsion assembly (4) comprises an inner fixing frame (41), an outer fixing frame (42), a connecting rod (43), a second motor (44), and a propeller (45); the inner fixing frame (41) is arranged inside the outer fixing frame (42) and is used to fix a plurality of bionic jellyfish tentacles (12); the bionic jellyfish tentacles (12) are fixed to the inner fixing frame (41) via the connecting rod (43); a propeller (45) is arranged on the connecting rod (43); the second motor (44) is used to drive the propeller (45); and the integrated control module (3) is used to control the water pump (122), the first motor, and the second motor (44).

10. A method for recycling marine microplastics, implemented based on the device according to any one of claims 1 to 9, characterized in that The method comprises the following steps: Step 1: According to a preset planned route, the integrated control module (3) controls the power propulsion assembly (4) to enable the device according to any one of claims 1 to 9 to move on the sea surface; Step 2: The water flows through the first separation screen (123) and enters the diversion pipe (121). At this time, large organic impurities are intercepted outside the first separation screen (123), and the unfiltered microplastic particles follow the water flow through the diversion pipe (121) and enter the multi-stage separation component (2); Step 3: The multi-stage separation component (2) performs multi-stage separation on the impurities in the water flow: Water flows from the water inlet of the microplastic separation module (21) into the outer wiper (213), and enters the inner wiper (214) through the filter holes of the filter (212) under the action of cyclonic pressure; the water flow on the inner wiper (214) finally flows into the electric adsorption separation module (23), and the large-size microplastics separated by the filter (212) enter the collection chamber (22) through the guide blade of the outer wiper (213); The water entering the electric adsorption separation module (23) flows through the gap layer of each electric adsorption filter element (235), and under the action of the electric field force, the microplastic particles are adsorbed on the gap layer of each adsorption chip (2311) and the negative electrode sheet (2352); The water flow separated by electrical adsorption is finally filtered through a separation filter (24) and then flows out.

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