A biological device for preventing fouling in pearl oyster aquaculture on remote islands and reefs

Abstract

The present invention discloses an anti-fouling biological device for pearl oysters in offshore reefs, which relates to the field of artificial breeding technology, and comprises a buoyancy unit, a damping unit, an anti-fouling outer frame and a gravity unit connected in sequence from top to bottom, a breeding unit is located in the anti-fouling outer frame, the upper end of the breeding unit is connected to the damping unit, a cleaning unit is inserted in the anti-fouling outer frame and used to clean the anti-fouling outer frame, and a hydrodynamic rotating unit is connected below the cleaning unit. The present invention is driven by natural ocean wave power, and can achieve the anti-fouling effect without the need for an additional powered cleaning machine, thereby reducing the investment cost of breeding facilities and the cost of manpower cleaning, and preventing the cultured pearl oysters from being affected by stress, fouling and cleaning damage.

Description

Technical Field

[0001] The invention relates to the technical field of artificial breeding, in particular to an anti-fouling biological device for increasing and breeding pearl oysters on remote islands and reefs. Background Art

[0002] The breeding process of seawater pearls generally includes three stages: cultivating pearl oysters, artificial nucleus insertion and pearl formation. The entire breeding cycle is generally 2-5 years. Due to the long breeding time, seaweed and debris are easily attached to the surface of pearl oyster shells, affecting the growth and pearl breeding of pearl oysters. There are three main anti-fouling methods: underwater machine cleaning, anti-fouling coating on the shell surface and manual cleaning. Underwater machine cleaning has high requirements for equipment and requires high material costs. In addition, it is easy to cause malfunctions under high sea conditions on offshore islands and reefs, and it is inconvenient to repair, which limits large-scale use. Anti-fouling coatings have good anti-attachment effects in a short period of time, but the long-term protection effect is limited, and it has a certain impact on the growth of pearl oysters. Although manual cleaning has simple equipment requirements, it consumes a lot of manpower. In addition, manual cleaning usually uses sharp tools to scrape and cut the attachments on the surface of the shells, which can easily damage the cuticle of the shells and affect the growth of pearl oysters. In addition, when cleaning, the pearl oysters need to be fished out of the sea water and brought back to the shore or boat. During this period, drying and exposure can cause stress to the pearl oysters, and bumping during movement can damage the shells, which is not conducive to the survival and pearl cultivation of pearl oysters and affects the quality of pearls. In addition, the existing shell cages are easily affected by waves and swing, which affects the growth of pearl oysters. Therefore, in the process of pearl oyster farming, there is an urgent need for a device that can effectively remove attachments, has little impact on pearl oysters, and has low investment. Summary of the invention

[0003] The purpose of the present invention is to provide an anti-fouling biological device for the aquaculture of pearl oysters on distant islands and reefs to solve the problems existing in the above-mentioned prior art, which can effectively remove the attachments on the surface of pearl oysters, avoid damage and influence on the pearl oysters during manual cleaning, and reduce labor costs.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] The present invention provides an anti-fouling biological device for pearl oyster aquaculture on remote islands and reefs, comprising a buoyancy unit, a damping unit, an anti-fouling outer jacket frame and a gravity unit which are sequentially connected from top to bottom, a breeding unit is located in the anti-fouling outer jacket frame, the upper end of the breeding unit is connected to the damping unit, a cleaning unit is inserted into the anti-fouling outer jacket frame and is used for cleaning the anti-fouling outer jacket frame, and a hydrodynamic rotating unit is connected below the cleaning unit.

[0006] Preferably, the buoyancy unit includes a buoyancy ball, a transverse rope and a longitudinal rope, the buoyancy ball is provided with a connecting hole, the transverse rope passes through the connecting hole, the upper end of the longitudinal rope is connected to the buoyancy ball through the connecting hole, and the lower end of the longitudinal rope is connected to the damping unit.

[0007] Preferably, the damping unit includes an outer shell and a damping structure arranged inside the outer shell, a plurality of fixing rings are arranged on the outer shell, the cleaning unit is connected to each of the fixing rings by a first connecting rope, the damping structure includes an upper spring and a lower spring, the upper end of the upper spring is in contact with the upper cover of the outer shell, the lower end of the lower spring is in contact with the lower cover of the outer shell, a damping disk is arranged between the upper spring and the lower spring, a damping rod is arranged at the lower end of the damping disk, the damping rod passes through the lower spring and is connected to the anti-fouling outer casing frame by a main rope.

[0008] Preferably, the anti-fouling outer casing frame is in the shape of a truncated cone, and includes an upper bottom surface, a side surface and a lower bottom surface connected in sequence from top to bottom, and the upper bottom surface, the side surface and the lower bottom surface are all wrapped with a corrosion-resistant mesh, and the upper bottom surface and the lower bottom surface have the same structure, and the upper bottom surface and the lower bottom surface both include a first outer circular bracket and a second outer circular bracket arranged opposite to each other up and down, and the first outer circular bracket and the second outer circular bracket are connected by a number of longitudinal connecting rods, and an inner circular bracket is arranged at the center of the upper bottom surface and the lower bottom surface, and the inner circular bracket is connected to the first outer circular bracket by a number of radiation brackets, and a hydrodynamic cleaning brush is arranged on the upper bottom surface and the lower bottom surface, and the hydrodynamic cleaning brush is used to remove fouling organisms attached to the upper bottom surface and the lower bottom surface.

[0009] Preferably, the hydrodynamic cleaning brush comprises a plurality of cleaning brushes, a plurality of hydrodynamic plates and a sleeve arranged above the inner circular bracket, one ends of the plurality of hydrodynamic cleaning brushes are evenly arranged along the outer circumference of the sleeve, the other ends of the plurality of hydrodynamic cleaning brushes are slidably connected to the track ring formed by the first outer circular bracket and the second outer circular bracket, and each of the cleaning brushes is fixedly connected to one of the hydrodynamic plates.

[0010] Preferably, the side includes an upper bracket, an oblique connecting rod and a lower bracket, the upper bracket includes a first inner bracket and a first outer bracket arranged concentrically, the first inner bracket and the first outer bracket are connected by a plurality of first connecting rods, the lower bracket includes a second inner bracket and a second outer bracket arranged concentrically, the second inner bracket and the second outer bracket are connected by a plurality of second connecting rods, the first inner bracket and the second inner bracket are connected by a plurality of the oblique connecting rods, a transverse connecting rod is arranged on the first inner bracket and the second inner bracket, the upper bottom surface is located on the first inner bracket, and the lower bottom surface is located on the second inner bracket, the cleaning unit passes through the gap formed by the first inner bracket, the first outer bracket and the first connecting rod and the gap formed by the second inner bracket, the second outer bracket and the second connecting rod in sequence, the first inner bracket is connected to the damping unit by a plurality of ropes, and the second inner bracket is connected to the gravity unit by a plurality of third connecting ropes.

[0011] Preferably, the breeding unit comprises a support frame, the support frame is fixedly connected to the anti-fouling outer casing frame, a double-layer grille is arranged inside the support frame, the double-layer grille comprises a plurality of placement grids, and the placement grids are used to place pearl oysters.

[0012] Preferably, the cleaning unit comprises a plurality of cleaning brushes, the upper end of each of the cleaning brushes is connected to the damping unit, and the lower end of each of the cleaning brushes is connected to the hydrodynamic rotating unit via a second connecting rope.

[0013] Preferably, the cleaning brush comprises a fixed structure and a plurality of brush filaments, the plurality of brush filaments are evenly arranged along the circumference and axial direction of the fixed structure, the fixed structure is two fixed wires arranged in a twisted shape, and the plurality of brush filaments are fixed by the two fixed wires.

[0014] Preferably, the hydrodynamic rotating unit is a rotating gyroscope; and the gravity unit is a gravity hanger.

[0015] Compared with the prior art, the present invention has achieved the following technical effects:

[0016] The present invention solves the problem of a large number of organisms attached to the surface of pearl oysters by setting an anti-fouling outer frame outside the breeding unit. The anti-fouling outer frame also has the function of preventing harmful animals from preying on pearl oysters; the attachments on the surface of the anti-fouling outer frame are cleaned by setting a cleaning unit; the damping unit is used to slow down the swing of the device as a whole with the waves, and the cleaning unit and the anti-fouling outer frame are formed to move relative to each other up and down, so as to achieve the purpose of up and down cleaning; when the water flows in all directions through the hydrodynamic rotating unit, the hydrodynamic rotating unit is driven to rotate, and the hydrodynamic rotating unit drives the cleaning unit connected thereto to rotate, so as to achieve the purpose of cleaning around the anti-fouling outer frame; the damping unit is connected to the buoyancy unit, and the buoyancy unit provides buoyancy for the device as a whole. The present invention is driven by natural ocean wave power, and the anti-fouling effect can be achieved without the need to provide an additional powered cleaning machine, which reduces the investment cost of breeding facilities and the cost of manpower cleaning, and avoids the cultured pearl oysters from the influence of stress, fouling and cleaning damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, 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.

[0018] Figure 1 A schematic diagram of the anti-fouling biological device for increasing the culture of pearl oysters on remote islands and reefs of the present invention;

[0019] Figure 2 It is a schematic diagram of the buoyancy unit of the present invention;

[0020] Figure 3 It is a schematic diagram of the external structure of the damping unit of the present invention;

[0021] Figure 4 It is a schematic diagram of the internal structure of the damping unit of the present invention;

[0022] Figure 5 It is a schematic diagram of the anti-fouling outer casing frame and the breeding unit of the present invention;

[0023] Figure 6 It is a schematic diagram of the upper bottom surface and the lower bottom surface of the anti-fouling outer casing frame of the present invention;

[0024] Figure 7 It is a side view of the anti-fouling outer cover frame of the present invention;

[0025] Figure 8 It is a schematic diagram of a breeding unit of the present invention;

[0026] Fig. 9 It is a schematic diagram of the cleaning unit and the hydrodynamic rotating unit of the present invention;

[0027] Fig.10 It is a schematic diagram of the cleaning brush of the present invention;

[0028] Fig.11 It is a schematic diagram of the hydrodynamic rotating unit of the present invention;

[0029] Among them: 1-buoyancy unit, 2-damping unit, 3-anti-fouling jacket frame, 4-breeding unit, 5-cleaning unit, 6-hydrodynamic rotation unit, 7-gravity unit;

[0030] 11- floating ball, 12- connection hole, 13- longitudinal rope, 14- transverse rope;

[0031] 23-housing, 24-first connecting rope;

[0032] 211-upper spring, 212-lower spring, 221-damping plate, 222-damping rod, 251-main rope, 252-branch rope;

[0033] 31-upper bottom surface, 34-side surface, 35-lower bottom surface;

[0034] 312-radiation bracket, 3111-first outer circular bracket, 3112-second outer circular bracket, 3113-inner circular bracket, 3114-longitudinal connecting rod, 3131-sleeve, 3132-stainless steel screw, 3134-hydraulic plate, 3135-cleaning brush, 3136-track ring;

[0035] 322- oblique connecting rod, 325- transverse connecting rod, 332- third connecting rope, 3211- first outer bracket, 3212- first inner bracket, 3231- first connecting rod, 3232- second connecting rod, 3241- second outer bracket, 3242- second inner bracket;

[0036] 41- double-layer grille, 42- pearl shell, 43- bracket frame;

[0037] 51 - cleaning brush, 52 - second connecting rope, 511 - brush wire, 512 - fixing wire. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] The purpose of the present invention is to provide an anti-fouling biological device for the aquaculture of pearl oysters on distant islands and reefs to solve the problems existing in the above-mentioned prior art, which can effectively remove the attachments on the surface of pearl oysters, avoid damage and influence on the pearl oysters during manual cleaning, and reduce labor costs.

[0040] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0041] like Figure 1 As shown: This embodiment provides an anti-fouling biological device for pearl oyster aquaculture on distant islands and reefs, comprising a buoyancy unit 1, a damping unit 2, an anti-fouling outer jacket frame 3 and a gravity unit 7 connected in sequence from top to bottom, a breeding unit 4 is located in the anti-fouling outer jacket frame 3, the upper end of the breeding unit 4 is connected to the damping unit 2, a cleaning unit 5 is inserted into the anti-fouling outer jacket frame 3 and is used for cleaning the anti-fouling outer jacket frame 3, and a hydrodynamic rotating unit 6 is connected below the cleaning unit 5. This embodiment solves the problem of a large number of organisms attached to the surface of pearl oysters 42 by setting an anti-fouling outer frame 3 outside the breeding unit 4. The anti-fouling outer frame 3 also has the function of preventing harmful animals from preying on the pearl oysters 42; the attachments on the surface of the anti-fouling outer frame 3 are cleaned by setting a cleaning unit 5; the damping unit 2 slows down the swing of the device as a whole with the waves, and forms a relative movement between the cleaning unit 5 and the anti-fouling outer frame 3, so as to achieve the purpose of up and down cleaning; when the water flows in all directions through the hydrodynamic rotating unit 6, the hydrodynamic rotating unit 6 is driven to rotate, and the hydrodynamic rotating unit 6 drives the cleaning unit 5 connected thereto to rotate, so as to achieve the purpose of cleaning around the anti-fouling outer frame 3; the damping unit 2 is connected to the buoyancy unit 1, and the buoyancy unit 1 provides buoyancy for the device as a whole. This embodiment uses natural ocean wave power for driving, and can achieve the anti-fouling effect without the need to provide an additional powered cleaning machine, which reduces the investment cost of breeding facilities and the cost of manpower cleaning, and avoids the cultured pearl oysters 42 from being affected by stress, fouling and cleaning damage.

[0042] like Figure 2 As shown, the buoyancy unit 1 includes a buoyancy ball 11, a transverse rope 14 and a longitudinal rope 13. The buoyancy ball 11 is provided with a connection hole 12. The transverse rope 14 passes through the connection hole 12. The upper end of the longitudinal rope 13 is connected to the buoyancy ball 11 through the connection hole 12, and the lower end of the longitudinal rope 13 is connected to the damping unit 2. Through the transverse rope 14, multiple embodiments of the present invention can be connected together.

[0043] like Figure 3 and Figure 4As shown, the damping unit 2 includes a shell 23 and a damping structure arranged inside the shell 23. A plurality of fixing rings are arranged on the shell 23, three of which are arranged in this embodiment. The cleaning unit 5 is connected to each fixing ring through a first connecting rope 24. The first connecting rope 24 is made of polyethylene and has a certain elasticity. When the cleaning unit 5 rotates to a certain extent, it can provide the cleaning unit 5 with the torque required for reverse rotation. The damping structure includes an upper spring 211 and a lower spring 212. The upper end of the upper spring 211 is in contact with the upper cover of the shell 23, and the lower end of the lower spring 212 is in contact with the lower cover of the shell 23. A damping disk 221 is arranged between the upper spring 211 and the lower spring 212. A damping rod 222 is arranged at the lower end of the damping disk 221. The damping rod 222 passes through the lower spring 212 and is connected to the anti-fouling outer cover frame 3 through the main rope 251. The upper spring 211 and the lower spring 212 realize the buffering effect of the anti-fouling outer jacket frame 3 to prevent the swing of waves from affecting the pearl shell 42 and the device as a whole, and the cleaning unit 5 can form an upward and downward relative movement with the anti-fouling outer jacket frame 3 to realize the upward and downward cleaning of the anti-fouling outer jacket frame 3.

[0044] like Figure 5 and Figure 6 As shown, the anti-fouling outer shell frame 3 is in a truncated cone shape, and the anti-fouling outer shell frame 3 includes an upper bottom surface 31, a side surface 34 and a lower bottom surface 35 connected in sequence from top to bottom, and the upper bottom surface 31, the side surface 34 and the lower bottom surface 35 are all wrapped with corrosion-resistant mesh, and the pore size of the corrosion-resistant mesh is 1-2mm. The upper bottom surface 31 and the lower bottom surface 35 have the same structure, and the upper bottom surface 31 and the lower bottom surface 35 both include a first outer circular bracket 3111 and a second outer circular bracket 3112 arranged opposite to each other in upper and lower directions, and the first outer circular bracket 3111 and the second outer circular bracket 3112 have the same size ... The circular bracket 3111 and the second outer circular bracket 3112 are connected by a plurality of longitudinal connecting rods 3114, which are three longitudinal connecting rods 3114 in this embodiment. An inner circular bracket 3113 is arranged at the center of the upper bottom surface 31 and the lower bottom surface 35. The inner circular bracket 3113 is connected to the first outer circular bracket 3111 by a plurality of radiation brackets 312, which are three radiation brackets 312 in this embodiment. A hydrodynamic cleaning brush is arranged on both the upper bottom surface 31 and the lower bottom surface 35, and the hydrodynamic cleaning brush is used to remove the fouling organisms attached to the upper bottom surface 31 and the lower bottom surface 35.

[0045] Specifically, the hydrodynamic cleaning brush includes a plurality of cleaning brushes 3135, a plurality of hydrodynamic plates 3134 and a sleeve 3131 arranged above the inner circular bracket 3113. The stainless steel screw 3132 passes through the sleeve 3131 and is threadedly connected to the inner circular bracket 3113. The stainless steel screw 3132 limits the vertical displacement of the sleeve 3131 and the sleeve 3131 can rotate around the stainless steel screw 3132. This embodiment has three cleaning brushes 3135 and three hydrodynamic plates 3134. One ends of the plurality of hydrodynamic cleaning brushes are evenly arranged along the outer circumference of the sleeve 3131, and the other ends of the plurality of hydrodynamic cleaning brushes are slidably connected to the track ring 3136 formed by the first outer circular bracket 3111 and the second outer circular bracket 3112. Each cleaning brush 3135 is fixedly connected to a hydrodynamic plate 3134. Under the action of the water flow, the hydrodynamic plate 3134 drives the cleaning brush 3135 to rotate around the center of the upper bottom surface 31 and the lower bottom surface 35 to remove the fouling organisms attached to the upper bottom surface 31 and the lower bottom surface 35 .

[0046] like Figure 7As shown, the side 34 includes an upper bracket, an oblique connecting rod 322 and a lower bracket, the upper bracket includes a first inner bracket 3212 and a first outer bracket 3211 arranged concentrically, the first inner bracket 3212 and the first outer bracket 3211 are connected by a plurality of first connecting rods 3231, and in this embodiment, there are three first connecting rods 3231, the lower bracket includes a second inner bracket 3242 and a second outer bracket 3241 arranged concentrically, the second inner bracket 3242 and the second outer bracket 3241 are connected by a plurality of second connecting rods 3232, and in this embodiment, there are three second connecting rods 3232, the positions of each first connecting rod 3231 and each second connecting rod 3232 correspond respectively, the first inner bracket 3212 and the second inner bracket 3242 are connected by a plurality of oblique connecting rods 322, and in this embodiment, there are three oblique connecting rods 322, the first inner bracket 3212 and the second inner bracket 3242 are both provided with a transverse connecting rod 325, and the two transverse connecting rods 325 are respectively connected by the first inner bracket 3212 and the first At the center of the second inner bracket 3242, the transverse connecting rod 325 improves the firmness of the anti-fouling outer frame 3 and provides a fixed position for the breeding unit 4. The upper bottom surface 31 is located on the first inner bracket 3212, and the lower bottom surface 35 is located on the second inner bracket 3242. The cleaning unit 5 passes through the gap formed by the first inner bracket 3212, the first outer bracket 3211 and the first connecting rod 3231 and the gap formed by the second inner bracket 3242, the second outer bracket 3241 and the second connecting rod 3232 in sequence. The gap formed by the first inner bracket 3212, the first outer bracket 3211 and the first connecting rod 3231 and the gap formed by the second inner bracket 3242, the second outer bracket 3241 and the second connecting rod 3232 provide a movable space for the cleaning unit 5 to prevent the cleaning units 5 from being entangled with each other. The first inner bracket 3212 is connected to the main rope 251 of the damping unit 2 through a plurality of branch ropes 252, and the second inner bracket 3242 is connected to the gravity unit 7 through a plurality of third connecting ropes 332.

[0047] In this embodiment, the connecting rods and brackets in the upper bottom surface 31, the side surface 34 and the lower bottom surface 35 are all made of 316 stainless steel.

[0048] like Figure 8 As shown, the breeding unit 4 includes a support frame 43, the upper and lower ends of the support frame 43 are respectively fixedly connected to a horizontal connecting rod 325, the support frame 43 is fixedly connected to the anti-fouling outer jacket frame 3, and a double-layer grille 41 is arranged in the support frame 43. The double-layer grille 41 includes a plurality of placement grids, which are used to place pearl oysters 42. The independent space of the placement grids avoids mutual interference between the pearl oysters 42.

[0049] like Fig. 9As shown, the cleaning unit 5 includes a plurality of cleaning brushes 51, three cleaning brushes 51 in this embodiment, the upper end of each cleaning brush 51 is connected to the damping unit 2 via a first connecting rope 24, and the lower end of each cleaning brush 51 is connected to the hydrodynamic rotating unit 6 via a second connecting rope 52.

[0050] like Fig.10 As shown, the cleaning brush 51 includes a fixed structure and a plurality of brush filaments 511. The brush filaments 511 are nylon filaments. The plurality of brush filaments 511 are evenly arranged along the circumference and axial direction of the fixed structure. The cleaning brush 51 is cylindrical as a whole. The fixed structure is two fixed wires 512 arranged in a twisted shape. The plurality of brush filaments 511 are fixed by the two fixed wires 512, and the fixed wires 512 are steel wires.

[0051] like Fig.11 As shown, the hydrodynamic rotating unit 6 is a rotating gyroscope, whose diameter increases and then decreases from top to bottom. The surface of the rotating gyroscope is provided with spiral protrusions, which can drive it to rotate under the action of water flows in different directions, thereby providing the cleaning unit 5 with the torque required for rotation. Driven by the water flow, the hydrodynamic rotating unit 6 drives the cleaning brush 51 to rotate between the first inner bracket 3212 and the first outer bracket 3211, and between the second inner bracket 3242 and the second outer bracket 3241, thereby achieving the effect of cleaning the fouling organisms on the surface of the side 34 of the anti-fouling outer frame 3.

[0052] In this embodiment, the gravity unit 7 is a gravity hanging block, specifically a cement block or a metal block. The gravity unit 7 is used together with the damping unit 2 to reduce the swing of the entire device under the action of waves.

[0053] This embodiment has low material cost, simple structure, easy maintenance, can achieve the effect of long-term protection of attached organisms, and is harmless to the growth of pearl oysters 42. Compared with manual cleaning, this embodiment greatly reduces the investment of labor costs; and no manual cleaning is required, which greatly reduces the mechanical damage to the pearl oysters 42 caused by sharp tools during manual cleaning, and avoids the stress caused to the pearl oysters 42 by drying and moving when manually cleaning the attached organisms on the surface of the pearl oysters 42; the anti-fouling outer shell frame 3 effectively isolates the predators of the pearl oysters 42, and has the function of preventing the cultured pearl oysters 42 from being preyed on.

[0054] The present specification uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A biofouling prevention device for pearl oysters in offshore reefs, characterized by: It comprises a buoyancy unit, a damping unit, an anti-fouling jacket frame and a gravity unit which are sequentially connected from top to bottom, the breeding unit is located in the anti-fouling jacket frame, the upper end of the breeding unit is connected to the damping unit, the cleaning unit is inserted in the anti-fouling jacket frame and used for cleaning the anti-fouling jacket frame, and the hydrodynamic rotating unit is connected below the cleaning unit; The anti-fouling outer shell frame is in the shape of a truncated cone, and includes an upper bottom surface, a side surface and a lower bottom surface connected in sequence from top to bottom, and the upper bottom surface, the side surface and the lower bottom surface are all wrapped with corrosion-resistant mesh. The upper bottom surface and the lower bottom surface have the same structure, and the upper bottom surface and the lower bottom surface both include a first outer circular bracket and a second outer circular bracket arranged opposite to each other up and down, and the first outer circular bracket and the second outer circular bracket are connected by a number of longitudinal connecting rods, and an inner circular bracket is arranged at the center of the upper bottom surface and the lower bottom surface, and the inner circular bracket is connected to the first outer circular bracket by a number of radiation brackets, and a hydrodynamic cleaning brush is arranged on the upper bottom surface and the lower bottom surface, and the hydrodynamic cleaning brush is used to remove the fouling organisms attached to the upper bottom surface and the lower bottom surface.

2. The anti-fouling biological device for increasing the culture of pearl oysters on distant islands and reefs according to claim 1 is characterized by: The buoyancy unit includes a buoyancy ball, a transverse rope and a longitudinal rope. The buoyancy ball is provided with a connecting hole, the transverse rope passes through the connecting hole, the upper end of the longitudinal rope is connected to the buoyancy ball through the connecting hole, and the lower end of the longitudinal rope is connected to the damping unit.

3. The anti-fouling biological device for increasing the culture of pearl oysters on remote islands and reefs according to claim 1 is characterized by: The damping unit includes an outer shell and a damping structure arranged inside the outer shell, a plurality of fixing rings are arranged on the outer shell, the cleaning unit is connected to each of the fixing rings by a first connecting rope, the damping structure includes an upper spring and a lower spring, the upper end of the upper spring is in contact with the upper cover of the outer shell, the lower end of the lower spring is in contact with the lower cover of the outer shell, a damping disk is arranged between the upper spring and the lower spring, a damping rod is arranged at the lower end of the damping disk, the damping rod passes through the lower spring and is connected to the anti-fouling outer casing frame by a main rope.

4. The anti-fouling biological device for increasing the culture of pearl oysters on distant islands and reefs according to claim 1 is characterized by: The hydrodynamic cleaning brush includes a plurality of cleaning brushes, a plurality of hydrodynamic plates and a sleeve arranged above the inner circular bracket. One ends of the plurality of hydrodynamic cleaning brushes are evenly arranged along the outer circumference of the sleeve, and the other ends of the plurality of hydrodynamic cleaning brushes are slidably connected to the track ring formed by the first outer circular bracket and the second outer circular bracket, and each of the cleaning brushes is fixedly connected to one of the hydrodynamic plates.

5. The anti-fouling biological device for increasing the culture of pearl oysters on distant islands and reefs according to claim 1 is characterized by: The side includes an upper bracket, an oblique connecting rod and a lower bracket, the upper bracket includes a first inner bracket and a first outer bracket arranged concentrically, the first inner bracket and the first outer bracket are connected by a plurality of first connecting rods, the lower bracket includes a second inner bracket and a second outer bracket arranged concentrically, the second inner bracket and the second outer bracket are connected by a plurality of second connecting rods, the first inner bracket and the second inner bracket are connected by a plurality of the oblique connecting rods, a transverse connecting rod is arranged on both the first inner bracket and the second inner bracket, the upper bottom surface is located on the first inner bracket, the lower bottom surface is located on the second inner bracket, the cleaning unit passes through the gap formed by the first inner bracket, the first outer bracket and the first connecting rod and the gap formed by the second inner bracket, the second outer bracket and the second connecting rod in sequence, the first inner bracket is connected to the damping unit by a plurality of ropes, and the second inner bracket is connected to the gravity unit by a plurality of third connecting ropes.

6. The anti-fouling biological device for increasing the culture of pearl oysters on distant islands and reefs according to claim 1 is characterized by: The breeding unit comprises a support frame, the support frame is fixedly connected to the anti-fouling outer casing frame, a double-layer grille is arranged inside the support frame, the double-layer grille comprises a plurality of placement grids, and the placement grids are used to place pearl oysters.

7. The anti-fouling biological device for increasing the culture of pearl oysters on remote islands and reefs according to claim 1 is characterized by: The cleaning unit comprises a plurality of cleaning brushes, the upper end of each of the cleaning brushes is connected to the damping unit, and the lower end of each of the cleaning brushes is connected to the hydrodynamic rotating unit via a second connecting rope.

8. The anti-fouling biological device for increasing the culture of pearl oysters on distant islands and reefs according to claim 7 is characterized by: The cleaning brush comprises a fixed structure and a plurality of brush filaments, wherein the plurality of brush filaments are evenly arranged along the circumference and axial direction of the fixed structure, and the fixed structure is two fixed filaments arranged in a twisted shape, and the plurality of brush filaments are fixed by the two fixed filaments.

9. The anti-fouling biological device for increasing the culture of pearl oysters on distant islands and reefs according to claim 1, characterized in that: The hydrodynamic rotating unit is a rotating gyroscope; the gravity unit is a gravity hanging block.

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