Marine micro-plastic collecting device based on microbubble adsorption

Abstract

The invention discloses an ocean micro-plastic collecting device based on microbubble adsorption, the device comprises a filter box, the filter box is provided with a power generation mechanism and a fixed-point anchoring mechanism, the device is characterized in that floating blocks are arranged on two sides of the filter box, a microbubble generator is arranged at the bottom of the filter box, and the floating blocks are connected with the microbubble generator. A filter plate is arranged at the top of the filter box, a rolling brush is arranged above the filter plate, a conveying belt is obliquely arranged behind the filter plate, a scraping plate is arranged below the conveying belt, the scraping plate is used for scraping micro-plastics attached to the conveying belt, and the scraped micro-plastics fall into a collecting box located below the scraping plate. A water inlet and a water outlet are respectively formed in two ends of the filter tank, seawater flows into the filter tank from the water inlet to be filtered, and the filtered seawater is discharged from the water outlet. The device is simple in structure, stable in working performance and capable of efficiently collecting and separating out the micro-plastics in the water body when the marine micro-plastics are collected, and the marine ecological environment is improved.

Description

Technical Field

[0001] The present invention relates to the field of ecological environment protection, and in particular to a marine microplastic collection device based on microbubble adsorption. Background Art

[0002] With the rapid development of human society, the use of plastic products is increasing. When dealing with waste plastics, the natural degradation time of plastics is relatively long, and burning will cause serious environmental pollution, resulting in a large amount of waste plastics that cannot be properly handled. Some of these plastics enter the ocean from land and cause water pollution. Plastics in the ocean will be decomposed into microplastics with a diameter of no more than 5mm under the influence of various factors. Compared with ordinary plastics, microplastics have small particles, large numbers, wide distribution and are easy to be ingested by aquatic organisms. They will cause immeasurable damage to the water environment and aquatic organisms, and ultimately threaten the human living environment.

[0003] At present, in the process of collecting microplastics in seawater, the existing technologies mainly include two methods: radiation-type fixed-point collection and ship collection. Although the radiation-type fixed-point collection is more efficient, it requires the absorption of seawater for seawater treatment, which makes its energy consumption high and the energy supply problem difficult to solve. It is only suitable for sea areas near the shore. As for the ship collection method, although its collection range is expanded, it can only collect areas near the ship, and the energy utilization rate is low, which does not play a good role in promoting the collection of marine microplastics.

[0004] In order to eliminate marine microplastics, which are unable to be efficiently collected and separated from polluted water bodies due to high energy consumption and limited collection range, technical personnel in this field have been seeking effective collection methods for marine microplastics so as to efficiently collect and separate microplastics from polluted water bodies and improve the marine ecological environment. Summary of the invention

[0005] The purpose of the present invention is to provide a marine microplastic collection device based on microbubble adsorption with a simple and compact structure, easy assembly and stable working performance. The device can efficiently collect and separate microplastics in water when collecting marine microplastics, thereby improving the marine ecological environment.

[0006] To achieve the above-mentioned purpose, the marine microplastic collection device based on microbubble adsorption designed by the present invention includes a filter box, on which a power generation mechanism and a fixed-point anchoring mechanism are provided. The special feature is that: floating blocks are provided on both sides of the filter box, a microbubble generator is provided at the bottom of the filter box, a filter plate is provided on the top of the filter box, a roller brush is provided above the filter plate, a conveyor belt is provided obliquely behind the filter plate, and a scraper is provided below the conveyor belt. The scraper is used to scrape off the microplastics attached to the conveyor belt, and the scraped microplastics fall into a collection box located below the scraper. A water inlet and a water outlet are respectively provided at both ends of the filter box, and seawater flows into the filter box from the water inlet for filtration, and the filtered seawater is discharged from the water outlet.

[0007] As a preferred embodiment, the power generation mechanism includes a hydro-turbine generator connected to the water inlet of the filter box, the other end of the hydro-turbine generator is connected to a retractable fan, and a filter screen is provided on the water-facing surface of the retractable fan; the rotor of the hydro-turbine generator is connected to an eccentric rotor; when waves pass by, the eccentric rotor swings with the movement of the waves, driving the rotor of the hydro-turbine generator to rotate, thereby generating current and converting wave energy into electrical energy.

[0008] Furthermore, a plurality of partition plates are arranged at intervals inside the filter box, each partition plate is provided with a notch at one end facing the inner cavity, and the notches between the two partition plates are staggered, thereby slowing down the speed of the water flow and prolonging the reaction time between the nanobubbles and the microplastics in the seawater.

[0009] Furthermore, a bionic fin is also provided at the bottom of the filter box. There are two bionic fins, which are arranged mirror-symmetrically on the left and right sides of the filter box. The bionic fin includes a fin, which is fixedly mounted on one end of the transmission shaft, and the other end of the transmission shaft is connected to a coupling, which is connected through a commutator. When the direction of the wave changes, the two bionic fins can rotate in the opposite direction, so that the device faces the direction of the wave.

[0010] As a preferred embodiment, a bionic fish tail is provided at the rear end of the filter box, and the bionic fish tail includes a shell, a skeleton is provided inside the shell, the shell is hinged to one end of the skeleton, the other end of the skeleton is connected to one end of the joint through a hinge, and the other end of the joint is connected to the tail fin through a hinge, so that the device can adjust its posture according to the wave state.

[0011] Furthermore, the fixed-point anchoring mechanism includes a storage bin fixedly installed at the bottom of the filter box, a winding motor is provided inside the storage bin, a winding wheel is provided on one side of the winding motor, one end of the fiber rope is connected to the winding wheel, and the other end of the fiber rope is provided with an anchor body, so that the device is fixed at a fixed point in the sea area.

[0012] As a preferred solution, a sliding block is provided at the bottom of the collection box, and the collection box is assembled to the slide rail through the sliding block and is slidably connected to the slide rail, and a limiting block is provided at the tail end of the slide rail.

[0013] Furthermore, a microbubble jet port is provided at the bottom of the filter box, and the microbubble jet port is connected to a microbubble generator, and the microbubble generator is configured to release nanobubbles into the filter box, and the bubbles can attach to microplastics and float up to be collected.

[0014] Furthermore, the pore size of the filter plate is 35-40 μm.

[0015] Furthermore, the speed of the drying conveyor belt is 4-5 km / h, so that the microplastics are dried by sunlight.

[0016] The advantages of the present invention are as follows: the designed marine microplastic collection device generates microbubbles to absorb microplastics in the ocean by setting a microbubble generator and a microbubble jet nozzle, and guides microplastics to the filter plate by utilizing the principle that the density of microplastics decreases and they float after combining with bubbles. The effective separation and collection of microplastics are achieved through the synergistic effect of the roller brush, conveyor belt, scraper and collection box. The overall structure of the device is simple, and it can efficiently collect microplastics from the marine environment and reduce marine microplastic pollution. At the same time, combined with the design of the floating block, the device can float on the water surface and adapt to the marine environment; further, by setting a hydro-turbine generator and retracting the fan, wave energy is used to generate electricity to provide part or all of the electricity for the device, so as to achieve energy self-sufficiency and reduce operating costs; by setting bionic fins and bionic fish tails, the device can automatically adjust its direction and posture according to the direction and state of the waves, thereby enhancing the stability of the device in complex sea conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the structure of a marine microplastic collection device based on microbubble adsorption.

[0018] Figure 2 for Figure 1 Schematic diagram of the assembly structure of the power generation mechanism.

[0019] Figure 3 for Figure 1 Schematic diagram of the structure of the bionic fin.

[0020] Figure 4 for Figure 3 Schematic diagram of the assembly structure at A in the figure.

[0021] Figure 5 for Figure 1 Schematic diagram of the assembly structure of the filter box.

[0022] Figure 6 for Figure 1 Schematic diagram of the assembly structure of the conveyor belt.

[0023] Figure 7 for Figure 6 Schematic diagram of the assembly structure of the collection box.

[0024] Figure 8 for Figure 1 Schematic diagram of the assembly structure of the bionic fish tail.

[0025] Fig. 9 for Figure 1 Schematic diagram of the assembly structure of the fixed-point anchoring mechanism.

[0026] Fig.10 for Figure 1 Schematic diagram of the cross-sectional structure of the marine microplastic collection device based on microbubble adsorption.

[0027] The components in the figure are numbered as follows: power generation mechanism 1; filter box 2 (including partition plate 21, filter plate 22, roller brush 23, microbubble generator 24, first motor 25, first pulley 26); conveyor belt 3 (including scraper 31, second motor 32, second pulley 33); collection box (4) (including slide rail 41, slider 42); floating block 5; bionic fin 6 (including fin 61, transmission shaft 62, coupling 63, commutator 64); bionic fish tail 7 (including skeleton 71, hinge 72, joint 73, tail fin 74, shell 75); fixed-point anchoring mechanism 8.

[0028] The power generation mechanism 1 comprises: a filter screen 11 ; a retractable fan 12 ; and a hydro-generator 13 .

[0029] The fixed-point anchoring mechanism 8 comprises: a fiber rope 81 and an anchor body 82 . DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the embodiments should not be construed as limiting the present invention.

[0031] like Figures 1 to 10As shown, the marine microplastic collection device based on microbubble adsorption described in this embodiment includes a filter box 2, on which a power generation mechanism 1 and a fixed-point anchoring mechanism 8 are provided, and is characterized in that: floating blocks 5 are provided on both sides of the filter box 2, a microbubble generator 24 is provided at the bottom of the filter box 2, a filter plate 22 is provided on the top of the filter box 2, a roller brush 23 is provided above the filter plate 22, a conveyor belt 3 is obliquely provided behind the filter plate 22, and a scraper 31 is provided below the conveyor belt 3, the scraper 31 is used to scrape off the microplastics attached to the conveyor belt 3, and the scraped microplastics fall into the collection box 4 located below the scraper 31, and a water inlet and a water outlet are respectively provided at both ends of the filter box 2, and seawater flows into the filter box 2 from the water inlet for filtration, and the filtered seawater is discharged from the water outlet.

[0032] The power generation mechanism 1 includes a hydro-turbine generator 13 connected to the water inlet of the filter box 2, the other end of the hydro-turbine generator 13 is connected to a retracted fan 12, and a filter screen 11 is arranged on the water-facing surface of the retracted fan 12; the rotor of the hydro-turbine generator 13 is connected to an eccentric rotor; when waves pass by, the eccentric rotor swings with the movement of the waves, driving the rotor of the hydro-turbine generator 13 to rotate, thereby generating current and converting wave energy into electrical energy.

[0033] The filter box 2 is internally provided with a plurality of partition plates 21 , each of which is provided with a notch at one end facing the inner cavity, and the notches between the two partition plates 21 are staggered, thereby slowing down the speed of the water flow and prolonging the reaction time between the nanobubbles and the microplastics in the seawater.

[0034] A bionic fin 6 is also provided at the bottom of the filter box 2. There are two bionic fins 6, which are arranged mirror-symmetrically on the left and right sides of the filter box 2. The bionic fin 6 includes a fin 61, and the fin 61 is fixedly mounted on one end of the transmission shaft 62. The other end of the transmission shaft 62 is connected to a coupling 63, and the coupling 63 is connected through a commutator 64. When the direction of the wave changes, the two bionic fins can rotate in the opposite direction, so that the device faces the direction of the wave.

[0035] A bionic fish tail 7 is provided at the rear end of the filter box 2. The bionic fish tail 7 includes a shell 75. A skeleton 71 is provided inside the shell 75. The shell 75 is hinged to one end of the skeleton 71. The other end of the skeleton 71 is connected to one end of a joint 73 through a hinge 72. The other end of the joint 73 is connected to a tail fin 74 through a hinge 72, so that the device can adjust its posture according to the wave state.

[0036] The fixed-point anchoring mechanism 8 includes a storage bin fixedly installed at the bottom of the filter box 2, a winding motor is provided inside the storage bin, a winding wheel is provided on one side of the winding motor, one end of the fiber rope 81 is connected to the winding wheel, and the other end of the fiber rope 81 is provided with an anchor body 82, so that the device is fixed at a fixed point in the sea area.

[0037] A slider 42 is provided at the bottom of the collection box 4. The collection box 4 is assembled to the slide rail 41 through the slider 42 and is slidably connected to the slide rail 41. A limit block is provided at the tail end of the slide rail.

[0038] A microbubble jet port is provided at the bottom of the filter box 2, and the microbubble jet port is connected to a microbubble generator 24. The microbubble generator 24 is configured to release nanobubbles into the filter box. The bubbles can attach to microplastics and float up to be collected.

[0039] The pore size of the filter plate 22 is 35-40 μm; the speed of the drying conveyor belt is 4-5 km / h, so that the microplastics are dried by sunlight.

[0040] During collection, seawater is guided in through the retracted fan 12 arranged at the front end of the water inlet. The seawater first passes through the filter screen 11 for preliminary filtration to remove larger impurities. With the surge of waves, the waves drive the eccentric rotor to swing, and then drive the rotor of the hydro-generator 13 to rotate, converting the wave energy into electrical energy. The seawater after preliminary filtration enters the filter box 2, and the microbubble generator 24 installed at the bottom of the filter box 2 generates nanobubbles, which are released into the water body inside the filter box 2 through the microbubble jet port. The multiple partition plates 21 arranged inside the filter box 2 are arranged at intervals, and the notches on adjacent partition plates 21 are staggered to form a tortuous water flow channel, which prolongs the residence time of seawater in the filter box 2 and ensures that the nanobubbles fully contact and react with the microplastics in the seawater. Due to the buoyancy of the bubbles, the bubble aggregates that adsorb the microplastics gradually float to the water surface. , the floating microplastic bubble aggregates reach the filter plate 22 at the top of the filter box 2, and the filter plate 22 intercepts the floating microplastic bubble aggregates to separate the microplastics from the water body; at the same time, the roller brush 23 arranged above the filter plate 22 drives the first pulley 26 to rotate through the first motor 25, sweeping the microplastic bubble aggregates retained on the surface of the filter plate 22 to the rear conveyor belt 3, and the swept microplastic bubble aggregates fall onto the inclined conveyor belt 3, and the conveyor belt 3 drives the second pulley 33 to rotate through the second motor 32, and uses sunlight to dry the microplastics. When reaching the end of the conveyor belt 3, the scraper 31 scrapes off the microplastics attached to the conveyor belt 3, so that it falls into the collection box 4 located below, and the collection box 4 is slidably connected to the slide rail 41 through the slider 42. When the collection box 4 is full of microplastics, it can be taken out for cleaning or replacement. The device realizes adaptive adjustment to the waves through the bionic fins 6 and the bionic fish tail 7. When the direction of the waves changes, the bionic fin 6 can rotate in the opposite direction under the coordinated action of the transmission shaft 62, the coupling 63 and the commutator 64, so that the device faces the direction of the waves and maintains a wave-facing posture. The skeleton 71, hinge 72, joint 73 and tail fin 74 structure of the bionic fish tail 7 enable it to adjust its posture according to the wave state. The fixed-point anchoring mechanism 8 drives the winding wheel to retract and release the fiber rope 81 through the winding motor, and cooperates with the anchor body 82 to realize the fixed-point fixation of the device in a specific sea area, ensuring that the device continues to collect microplastics in the predetermined area.

[0041] In the present invention, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the description of this specification, if the terms "one embodiment", "some embodiments", "specific embodiments" and the like appear, it means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A marine microplastic collection device based on microbubble adsorption, comprising a filter box (2), wherein the filter box (2) is provided with a power generation mechanism (1) and a fixed-point anchoring mechanism (8), characterized in that: Floating blocks (5) are arranged on both sides of the filter box (2), a microbubble generator (24) is arranged at the bottom of the filter box (2), a filter plate (22) is arranged at the top of the filter box (2), a roller brush (23) is arranged above the filter plate (22), a conveyor belt (3) is arranged obliquely behind the filter plate (22), a scraper (31) is arranged below the conveyor belt (3), the scraper (31) is used to scrape off microplastics attached to the conveyor belt (3), and the scraped microplastics fall into a collection box (4) located below the scraper (31), and a water inlet and a water outlet are respectively opened at both ends of the filter box (2), seawater flows into the filter box (2) from the water inlet for filtration, and the filtered seawater is discharged from the water outlet.

2. The marine microplastic collection device based on microbubble adsorption according to claim 1 is characterized in that: The power generation mechanism (1) comprises a hydro-turbine generator (13) connected to the water inlet of the filter box (2); the other end of the hydro-turbine generator (13) is connected to a retracted fan (12); the water-facing surface of the retracted fan (12) is provided with a filter screen (11); the rotor of the hydro-turbine generator (13) is connected to an eccentric rotor; when waves pass by, the eccentric rotor swings with the movement of the waves, driving the rotor of the hydro-turbine generator (13) to rotate, thereby generating current and converting wave energy into electrical energy.

3. The marine microplastic collection device based on microbubble adsorption according to claim 2 is characterized in that: The filter box (2) is provided with a plurality of partition plates (21) at intervals inside, each partition plate (21) is provided with a notch at one end facing the inner cavity, and the notches between the two partition plates (21) are arranged in a staggered manner, thereby slowing down the speed of the water flow and prolonging the reaction time between the nanobubbles and the microplastics in the seawater.

4. The marine microplastic collection device based on microbubble adsorption according to claim 3 is characterized in that: The bottom of the filter box (2) is also provided with a bionic fin (6), and there are two bionic fins (6). The two bionic fins (6) are arranged on the left and right sides of the filter box (2) in a mirror-symmetrical manner. The bionic fin (6) comprises a fin (61), and the fin (61) is fixedly mounted on one end of the transmission shaft (62). The other end of the transmission shaft (62) is connected to a coupling (63), and the coupling (63) is connected via a commutator (64). When the direction of the wave changes, the two bionic fins can rotate in the opposite direction, so that the device faces the direction of the wave.

5. The marine microplastic collection device based on microbubble adsorption according to claim 4 is characterized in that: A bionic fish tail (7) is provided at the rear end of the filter box (2), and the bionic fish tail (7) comprises a shell (75), a frame (71) is provided inside the shell (75), the shell (75) is hinged to one end of the frame (71), the other end of the frame (71) is connected to one end of a joint (73) through a hinge (72), and the other end of the joint (73) is connected to a tail fin (74) through the hinge (72), so that the device can adjust its posture according to the wave state.

6. The marine microplastic collection device based on microbubble adsorption according to claim 1 is characterized in that: The fixed-point anchoring mechanism (8) comprises a storage bin fixedly mounted on the bottom of the filter box (2), a winding motor is arranged inside the storage bin, a winding wheel is arranged on one side of the winding motor, one end of the fiber rope (81) is connected to the winding wheel, and the other end of the fiber rope (81) is arranged with an anchor body (82), so that the device is fixed at a fixed point in the sea area.

7. The marine microplastic collection device based on microbubble adsorption according to claim 1 is characterized in that: A slider (42) is provided at the bottom of the collection box (4); the collection box (4) is assembled to the slide rail (41) via the slider (42) and is slidably connected to the slide rail (41); a limit block is provided at the rear end of the slide rail.

8. The marine microplastic collection device based on microbubble adsorption according to claim 1 is characterized in that: A microbubble jet outlet is provided at the bottom of the filter box (2), and the microbubble jet outlet is connected to a microbubble generator (24). The microbubble generator (24) is configured to release nanobubbles into the filter box, and the bubbles can attach to microplastics and float up to be collected.

9. The marine microplastic collection device based on microbubble adsorption according to claim 1 is characterized in that: The pore size of the filter plate (22) is 35-40 μm.

10. The marine microplastic collection device based on microbubble adsorption according to claim 1, characterized in that: The speed of the drying conveyor belt is 4-5 km / h, so that the microplastics are dried by sunlight.

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