Self-cleaning modular gravity type net cage culture system

Abstract

The invention relates to a self-cleaning module type gravity type net cage culture system which comprises a floating mat assembly, a floating mat assembly and a gravity type net cage culture system. The cage frame assembly comprises frames and floaters, each frame is arranged on two adjacent floating mat units, the two ends of each frame are connected with the two ends of the two adjacent floating mat units respectively, and the floaters are fixedly arranged below the frames; the plurality of oyster cages are hung on the frame and are used for culturing fresh oysters; the cleaning assembly comprises a mounting frame and cleaning mechanisms, the mounting frame is connected with the floating mat assembly, the mounting frame can swing relative to the floating mat assembly, the multiple cleaning mechanisms are arranged along the mounting frame at intervals, and each cleaning mechanism can make contact with at least two adjacent oyster cages; and / or each oyster cage is in contact with at least one cleaning mechanism. Compared with the prior art, the cleaning assembly cleans the oyster cage under the action of water flow and stormy waves, so that the time interval for cleaning the oyster cage on water is prolonged to 3-6 months.

Description

Technical Field

[0001] The invention relates to the technical field of marine aquaculture equipment, and in particular to a self-cleaning modular gravity cage aquaculture system. Background Art

[0002] Oysters, also known as oysters, are the world's largest farmed shellfish and one of the important marine biological resources available to humans. They are a globally distributed species. Oyster meat is fresh, delicious, nutritious, and has unique health functions and medicinal value. It is a seafood delicacy with high nutritional value. It is an important marine aquaculture target in countries around the world and the largest economic shellfish in China and even the world.

[0003] China ranks first in the world in oyster production, accounting for more than 83% of the world's oyster production. At present, the main method of oyster farming at sea is to use floating rafts (rafts). This method uses PE floats, inflatable floats or foam floats as floating objects, and uses bamboo and wood floating rafts to hang oysters in oyster cages. Oyster cages are placed in seawater for a long time. Water flowing through the breeding area will carry particles such as mud and sand, as well as attached organisms such as mussels and mussels. These particles and attached organisms are easy to deposit or attach to the oyster cages, blocking the mesh of the oyster cages, affecting the exchange of water inside and outside the oyster cages, and then affecting the oysters' filtration of microalgae, plankton and other nutrients. It will also cause the water environment conditions in the breeding space inside the oyster cages to deteriorate, and the dissolved oxygen supply is insufficient, affecting the growth of oysters. In addition, attached organisms will compete with oysters for nutrients in the water, prolonging the growth cycle of oysters. What's more serious is that some attached organisms will drill into or penetrate the oyster shells, increasing the frequency of oyster diseases and reducing the survival rate of oysters. In addition, in recent years, due to the serious impact of human activities on the nearshore estuary area, heavy metal pollution and frequent harmful algal blooms, in order to pursue high-quality oysters, oyster farming has gradually developed towards the deep sea. However, the wind and waves in the deep sea are strong, which can easily cause direct damage such as the fall apart of floating racks and the loss of oyster seedlings. It can also lead to an increase in the sediment content in the water, exacerbating the sediment adhesion phenomenon on the oyster cages.

[0004] In order to promote the growth of oysters, it is necessary to remove the silt and attached organisms on the oyster cages in time. However, the current oyster cage cleaning method is relatively primitive. Usually, the oyster cages need to be taken out of the water one by one every 1 to 2 months, and the oyster cages are sprayed in multiple directions with high-pressure water to remove the sediment and attached organisms deposited on the oyster cages. The oyster cages that have been cleaned need to be put back into the floating row one by one to continue to be cultivated. This cleaning process is time-consuming, and farmers need to work on the floating row for a long time, which increases labor costs. In addition, during the entire deep-sea oyster cultivation period, the oyster cages need to be cleaned many times. The multiple round trips of the ships increase the labor costs and consume a lot of diesel. The discharge of diesel combustion products brings pollution to the sea area and affects the quality of oysters. In addition, when the oyster cages are cleaned, only the top of the oyster cages is usually fixed. Therefore, when the high-pressure water flow is sprayed on the oyster cages, the bottom of the oyster cages is easy to swing, which affects the cleaning efficiency and increases the cost. The swing of the bottom of the oyster cages will also cause the oysters to collide with each other, thereby causing partial damage to the oysters. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art and to provide a self-cleaning modular gravity cage culture system.

[0006] The present invention is realized by the following technical scheme: a self-cleaning modular gravity cage culture system, comprising:

[0007] A floating row assembly comprises a truss and connecting pipes, wherein a plurality of the connecting pipes are connected to the inside of the truss, and the connecting pipes and the truss and / or the plurality of connecting pipes are enclosed to form a plurality of floating row units arranged in a rectangular array;

[0008] The cage assembly comprises a frame and floats, each frame is arranged on two adjacent floating row units, two ends of the frame are respectively connected to two ends of the two adjacent floating row units, and a plurality of floats are fixedly arranged under the frame;

[0009] A plurality of oyster cages, hung on the frame, for oyster farming;

[0010] The cleaning assembly comprises a mounting frame and a cleaning mechanism, wherein the mounting frame is connected to the floating row assembly and can swing relative to the floating row assembly. A plurality of cleaning mechanisms are arranged at intervals along the mounting frame, each of the cleaning mechanisms can contact with at least two adjacent oyster cages, and / or each of the oyster cages contacts with at least one cleaning mechanism.

[0011] Compared with the prior art, the present invention arranges a cleaning component between adjacent oyster cages. Driven by water flow, wind and waves, the cleaning component swings and / or rotates, thereby colliding or rubbing against the oyster cages, causing the sediment deposited on the oyster cages to be shaken off or rubbed off, and the organisms that are about to attach or have just attached to the oyster cages are promptly shaken off or rubbed off in the early stages of attachment, thereby promoting sufficient exchange of water in the oyster cages with external water, so that the water in the oyster cages has sufficient nutrients and oxygen for the growth of oysters, thereby extending the time interval for cleaning the oyster cages on the water to 3 to 6 months.

[0012] Furthermore, the mounting frame includes a hanging rope and a mounting rod, the hanging rope connects the two ends of the mounting rod to the truss and / or the connecting pipe, the mounting rod is roughly parallel to the length direction or width direction of the truss; the cleaning mechanism includes a cleaning rack and a brush, a plurality of the cleaning racks are arranged at intervals along the length direction of the mounting rod, the cleaning rack is connected to the mounting rod, the brush is connected to the cleaning rack, and is roughly parallel to the oyster cage, and the length of the brush is equal to or similar to the length of the oyster cage; the mounting rod and / or the brush are rotatably connected to the cleaning rack. Through this setting, the water flow, wind and waves can drive the brush to rotate, so that the brush can clean multiple oyster cages, while reducing the area of ​​the brush blocking the water flow.

[0013] Furthermore, each cleaning rack is arranged between two to four adjacent oyster cages, and the spacing between the two to four adjacent oyster cages is roughly equal, and each oyster cage is adjacent to only one cleaning rack; the end of the brush part away from the cleaning rack contacts the oyster cage, and is arranged in a serrated or wavy shape, or a plurality of silicone bristles are arranged at the end of the brush part contacting the oyster cage. Through this setting, the total number of cleaning groups, especially cleaning mechanisms, is reduced, the resistance of the cleaning components, especially the cleaning mechanisms, to the water flow and the adsorption of plankton are reduced, the water flow in the area where the entire cage culture system is located is promoted, and the cost can be saved at the same time.

[0014] Furthermore, the brush part includes a plurality of brush heads, which are arranged along the length direction of the cleaning rack and fixed to the cleaning rack, and the projections of the plurality of brush heads on the horizontal plane at least partially do not overlap. Through this setting, the water flow in the same direction has a larger area when contacting the cleaning rack at different rotation angles, which is enough to push the cleaning rack to rotate a larger angle or rotate for a longer time, thereby promoting full contact between the brush head and the oyster cage, and at the same time, avoiding the brush head located below from obstructing the attachments and sediments cleaned above, causing them to be re-deposited on the oyster cage.

[0015] Furthermore, the included angle of the projections of any two brush heads in the brush section on the horizontal plane is less than 180°. Through this setting, the blocking area of ​​the water flow by a single brush section is reduced, so that the water flow is smooth, and the smooth water flow will drive the brush section to rotate at a suitable speed, thereby reducing damage to the oyster cage while cleaning it.

[0016] Furthermore, the main body of the brush is made of silicone, PTFE or graphene, or the main body of the brush is coated with a fluororesin coating, a nano coating, a polydimethylsilane coating or PTFE. This setting reduces the adsorption of algae and other plankton by the brush, thereby reducing the impact of the cleaning component on the growth of oysters and extending the service life of the cleaning component.

[0017] Furthermore, the cleaning component includes a lifting mechanism, which is fixed to the truss. The lifting mechanism includes a winding portion. One end of a suspension rope of the cleaning component is fixed to the winding portion, and the other end is fixed to an end of the truss away from the lifting mechanism. The winding portion controls the depth of the cleaning mechanism by winding or releasing the suspension rope, so that the cleaning mechanism overlaps or is offset from the plane where the oyster cage is located. Through this setting, the mounting frame and the cleaning mechanism are lowered during extreme weather such as typhoons, and are offset from the plane where the oyster cages are located, so as to avoid damage to the mounting frame, the cleaning mechanism and the oyster cages caused by excessive collision between the mounting frame and the cleaning mechanism and the oyster cages, affecting the subsequent cleaning effect and the growth state of oysters, causing economic losses, etc. At the same time, the cleaning component is fixedly connected to the floating row component and swings under the action of water flow and waves, which can dissipate the energy input of wind and waves to the floating row, thereby reducing the impact of wind and waves on the overall cage culture system, and keeping the floating row in a relatively stable state in wind and waves. At the same time, this swing enables the floating row component to adapt to changes in wind and waves more flexibly, reduce excessive stress and deformation caused by wind and waves, and help to extend the service life of the floating row and reduce maintenance costs.

[0018] Furthermore, the floating row body includes a truss and a connecting pipe, the truss includes a floating pipe, a number of the floating pipes are arranged in a U-shaped or U-shaped shape, and the floating pipes are connected by hot-melt; a number of the connecting pipes are connected to the inside of the truss, and the connecting pipes and / or the connecting pipes and the truss are enclosed to form a plurality of floating row units arranged in a rectangular array. By setting the truss of the floating row assembly to a U-shaped shape connected together by hot-melt, and connecting adjacent floating pipes together by a plurality of connecting pieces, it is not easy to fall apart, thereby improving the stability and wind and wave resistance of the truss. At the same time, by connecting a plurality of connecting pipes to the inner side of the truss to form a stable mesh structure, the stability of the truss is further enhanced, and the serious impact of the truss falling apart on the environment, oyster production, etc. is avoided.

[0019] Furthermore, the middle part of each cage is laid on the common connecting pipe of two adjacent floating row units, and the ends of the frame are laid on the floating pipes and / or connecting pipes on both sides of the two adjacent floating row units, and / or the frame is connected to the floating pipes and / or connecting pipes on both sides of the two adjacent floating row units through cables or fasteners; a plurality of floats are respectively arranged in the area of ​​the frame located in each floating row unit; a plurality of hooks are arranged on the frame for connecting the boom. By laying the two ends and the middle part of the long tube on the floating pipe and the connecting pipe, a more stable support of the cage assembly is achieved, and the force of the cage assembly on the floating pipe and / or the connecting pipe is avoided to be mainly concentrated on the connection of the binding rope or the fastener, which makes the connection between the floating pipe and / or the connecting pipe and the binding rope or the fastener easy to be damaged.

[0020] Furthermore, the self-cleaning modular gravity cage culture system also includes a net with an aperture smaller than the aperture of the oyster cage, and several of the nets are detachably connected to the outside of the several oyster cages; or, the net is detachably connected to the cage frame, the floating row unit or the truss, and is sleeved on the outside of all oyster cages on the cage frame, the floating row unit or the truss. Through this setting, the net can filter the sediment, attached organisms, etc. in the water flow, reduce the deposition of sediment and attached organisms in the oyster cage, and by regularly replacing the net, the net is transported to the factory for cleaning, thereby reducing the frequency of cleaning the oyster cage, and further reducing the impact of the oyster cage cleaning process on the growth of oysters. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of oyster farming according to Example 1 of the present invention.

[0022] Figure 2 for Figure 1 BB cross-section diagram.

[0023] Figure 3 for Figure 1 A partial enlarged view of .

[0024] Figure 4 It is a schematic diagram of the structure of the floating row body.

[0025] Figure 5 for Figure 4 A schematic structural diagram of the truss of the floating row body is shown.

[0026] Figure 6 for Figure 2 A top view of the cage and cleaning assembly is shown.

[0027] Figure 7 for Figure 6 CC cross-section diagram.

[0028] Figure 8 for Figure 7Schematic diagram of the sinking state of the cleaning component shown.

[0029] Fig. 9 for Figure 6 DD cross-section diagram.

[0030] Fig.10 A schematic diagram of the structure of the connector.

[0031] Fig.11 Schematic diagram of the cage structure.

[0032] Fig.12 This is a schematic diagram of the structure of the cleaning mechanism described in Example 3.

[0033] Fig.13 for Fig.12 Schematic diagram of the sinking state of the cleaning component shown.

[0034] Fig.14 This is a schematic diagram of the structure of the cleaning mechanism described in Example 4, wherein each cleaning mechanism is at a different rotation angle.

[0035] Fig.15 for Fig.14 Side view of the cleaning mechanism shown.

[0036] Fig.16 for Fig.14 A top view of the cleaning mechanism shown.

[0037] The technical solution of the present invention is described in detail below in conjunction with the accompanying drawings. DETAILED DESCRIPTION

[0038] Example 1

[0039] See also Figures 1 to 5 , which is a structural schematic diagram of the self-cleaning modular gravity cage culture system provided in this embodiment. The culture system includes a floating row assembly 10, a cage assembly 20, an oyster cage 30, an anchor assembly 40 and a cleaning assembly 50. The floating row assembly 10 includes a plurality of floating row units A arranged in a rectangular array, and a plurality of the cage assemblies 20 are detachably connected to at least one of the floating row units A, and the oyster cage 30 is hung on the cage assembly 20 for oyster culture; the anchor assembly 40 is arranged 6 meters below the seabed and connected to the floating row assembly 10, and is used to fix the floating row assembly 10, thereby enhancing the stability of the oyster row; the cleaning assembly 50 is connected to the floating row assembly 10, and is arranged between at least two oyster cages 30, and the oyster cage 30 is cleaned under the action of waves and water flow.

[0040] Specifically, the floating row assembly 10 includes a truss 11 and a connecting pipe, wherein the connecting pipe is connected to the inside of the truss 11 to form a plurality of floating row units A arranged in a rectangular array. In some embodiments, a floating barrel is provided at the bottom of the truss 11 and / or the connecting pipe to enhance the buoyancy of the floating row assembly 10.

[0041] The truss 11 includes a transverse floating tube 111 and a vertical floating tube 112. A plurality of the transverse floating tubes 111 and a plurality of the vertical floating tubes 112 are connected by heat-melting at the head and tail parts in sequence to form a truss 11 arranged in a U-shaped or quasi-U-shaped shape. Between two adjacent transverse floating tubes 111, two vertical floating tubes 112 are arranged in parallel with each other through a plurality of connectors 14. Preferably, the head and tail parts of the two transverse floating tubes 111 and the two vertical floating tubes 112 are connected by heat-melting in sequence to form a first rectangular frame, and the two transverse floating tubes 111 and the two vertical floating tubes 112 are surrounded to form a second rectangular frame slightly smaller than the first rectangular frame. One end of the two transverse floating tubes 111 and the two vertical floating tubes 112 in the second rectangular frame protrudes from the second rectangular frame and is connected to the vertical floating tubes 112 or the transverse floating tubes 111 of the first rectangular frame to form a quasi-U-shaped rectangular truss 11. In this embodiment, the ends of each floating tube are connected to other floating tubes by hot-melt, the middle of each floating tube is connected to other floating tubes by a plurality of connectors 14, and the ends of each connecting tube are fixedly connected to the second rectangular frame to enhance the stability of the truss 11 and prevent the truss 11 from falling apart due to wind and waves.

[0042] The connecting pipes include a transverse connecting pipe 121 and a vertical connecting pipe 122. The transverse connecting pipe 121 includes a first transverse connecting pipe 121a and a second transverse connecting pipe 121b. The first transverse connecting pipe 121a is disposed in the middle of the truss 11 in the second direction, and its two ends are respectively fixedly connected to the width direction of the truss 11, and two first transverse connecting pipes 121a are connected in parallel to each other through a plurality of connecting members 14. A plurality of vertical connecting pipes 122 and a plurality of second transverse connecting pipes 121b are spaced between the transverse floating pipe 111 and the adjacent first transverse connecting pipe 121a. One end of the vertical connecting pipe 122 is fixedly connected to the transverse floating pipe 121b or the first transverse connecting pipe 121a, and the other end is fixedly connected to the second transverse connecting pipe 121b. The two ends of the second transverse connecting pipe 121b are respectively fixedly connected to the two vertical floating pipes 122b. In this embodiment, the first direction is the length direction of the floating row assembly 10, the second direction is the width direction of the floating row assembly 10, the widths of the floating row units A in the second direction of the truss 11 are consistent, and at least two floating row units A have different lengths. Preferably, the lengths of the floating row units A at both ends of the truss 11 in the first direction are less than the lengths of the floating row units A in the middle of the truss 11 in the first direction, and the lengths of the floating row units A in the second direction are different. In other embodiments, the first direction may also be the width direction, and the second direction may also be the length direction, without limitation thereto.

[0043] Furthermore, the width direction of the floating row assembly 10 is arranged in the direction of the water flow to reduce the force of the water flow and the waves on the floating row assembly 10 and improve the stability of the floating row assembly 10.

[0044] See also Figures 2 to 9The cage culture system includes several rows and columns of oyster cages 30, and a cleaning assembly 50 is arranged on one side or both sides of each row or column of oyster cages 30, so that each oyster cage 30 can contact the cleaning assembly 50, so that the cleaning assembly 50 can clean the oyster cage 30. The cleaning assembly 50 includes a mounting frame 51, a cleaning mechanism 52, and a lifting mechanism 53. The mounting frame 51 is connected to the floating row assembly 10, and the mounting frame 51 is arranged between two adjacent rows of oyster cages 30, parallel to the horizontal floating tube 111 or the vertical floating tube 112. The top of at least one cleaning mechanism 52 is connected to the mounting frame 51. The length of the cleaning mechanism 52 is equal to or similar to that of the oyster cage 30. The cleaning mechanism 52 includes a vertically arranged cleaning frame 521 and a brush portion 522 arranged along the length direction of the cleaning frame 521. The mounting frame 51 swings under the impact of water flow and waves, driving the cleaning mechanism 52 to swing, so that the mounting frame 51 and / or the brush portion 522 collide and rub with the oyster cage 30 adjacent to the mounting frame 51, so as to clean the deposited mud, attached organisms, etc. on the oyster cage 30. The lifting mechanism 53 drives the cleaning mechanism 52 to move up and down in the vertical direction, so that the projection of the cleaning mechanism 52 on the vertical plane can overlap or stagger with the oyster cage 30. By controlling the depth of the cleaning mechanism 52, it is possible to avoid the mounting frame 51 and / or the cleaning mechanism 52 from swinging too much at an angle causing a large impact force on the oyster cage 30. Specifically, in extreme weather such as typhoons, the lifting mechanism 53 is started to sink the cleaning mechanism 52 and stagger it with the plane where the oyster cage 30 is located, so as to avoid excessive collision between the cleaning mechanism 52 and the oyster cage 30, resulting in damage to the cleaning mechanism 52 and the oyster cage 30, thereby affecting the subsequent cleaning effect and the growth state of the oysters. In this embodiment, the oyster cages 30 arranged along the length direction of the cage frame assembly 20 are used as the oyster cages 30 of each row, and the oyster cages 30 arranged along the width direction of the cage frame assembly 20 are used as the oyster cages 30 of each column.

[0045] In some embodiments, a cleaning assembly 50 is provided between every two adjacent rows and / or two columns of oyster cages 30, and in each cleaning assembly 50, a plurality of cleaning mechanisms 52 are provided along the length direction of the mounting frame 51, and the plurality of cleaning mechanisms 52 are respectively located between two adjacent oyster cages 30 in the same row or column, so that each oyster cage 30 can contact with one to eight cleaning mechanisms 52, and multiple surfaces can be effectively cleaned, thereby maximizing the underwater cleaning effect of the oyster cage 30, promoting the exchange of water inside and outside the oyster cage 30, extending the time interval for cleaning the oyster cage 30 above water, and saving costs.

[0046] In some embodiments, only one side of each row of oyster cages 30 is provided with a cleaning assembly 50, and only one side of each oyster cage 30 is provided with a cleaning mechanism 52, that is, each oyster cage 30 is in contact with only one cleaning mechanism 52. While ensuring that each oyster cage 30 can be cleaned, the total number of cleaning assemblies 50, especially the cleaning mechanisms 52, is reduced, the resistance of the cleaning assemblies 50, especially the cleaning mechanisms 52 to the water flow and the adsorption of plankton are reduced, the water flow in the area where the entire cage culture system is located is promoted, and costs can be saved at the same time.

[0047] Further, in some embodiments, the mounting frame 51 includes a suspension rope 511 and a mounting rod 512, wherein the suspension rope 511 connects the mounting rod 512 to the floating row assembly 10, and the narrow side of the mounting rod 512 is arranged in the direction of the water flow, that is, the mounting rod 512 is parallel to the transverse floating tube 111. The top of the cleaning rack 521 is rotatably connected to the mounting rod 512, and a plurality of the cleaning racks 521 are arranged at intervals along the length direction of the mounting rod 512, each cleaning rack 521 is adjacent to at least two oyster cages 30, and each oyster cage 30 is adjacent to a cleaning rack 521, and preferably, at least some of the cleaning racks 521 are adjacent to four oyster cages 30. Under the action of water flow and waves, the rotation of the cleaning rack 521 relative to the mounting rod 512 drives the brush portion 522 to rotate, thereby preventing the brush portion 522 from obstructing the passage of water flow. At the same time, the rotation of the brush portion 522 causes the free end of the brush portion 522 to collide and rub against the oyster cage 30, which helps to clean the sediment and attachments on the oyster cage 30 and promote the circulation of water inside and outside the oyster cage 30.

[0048] In some embodiments, the top end of the cleaning rack 521 is fixedly connected or rotatably connected to the mounting rod 512, and the brush portion 522 is rotatably connected to the cleaning rack 521, and can rotate relative to the cleaning rack 521 under the action of water flow and waves.

[0049] In some embodiments, a swing groove is provided in the mounting rod 512, and the top end of the cleaning rack 521 is movably disposed in the swing groove. The cleaning rack 521 can swing relative to the mounting rod 512 under the action of water flow and waves.

[0050] Furthermore, in some embodiments, the free end of the brush portion 522 in contact with the oyster cage 30 is designed to be serrated, wavy, or the like, or the free end of the brush portion 522 is provided with bristles, or the contact surface between the brush portion 522 and the oyster cage 30 is provided with a friction surface with a large friction coefficient, so as to enhance the cleaning effect on the oyster cage 30. In other embodiments, the brush portion 522 may be a brush.

[0051] Preferably, the bristles of the brush portion 522 are made of a flexible material such as silicone to avoid damaging the oyster cage 30 , while the silicone can reduce the attachment and deposition of organisms and sediment on the brush portion 522 .

[0052] Preferably, the main body of the brush portion 522 is made of an anti-adhesion material such as silicone, PTFE or graphene, or the main body of the brush portion 522 is coated with an anti-adhesion material such as a fluororesin coating, a nano coating, a polydimethylsilane coating or PTFE to reduce the adhesion between the attached organisms and the brush portion 522 and reduce the maintenance cycle of the brush portion 522. More preferably, the surfaces of the mounting rod 512 and the cleaning rack 521 are coated with an anti-adhesion material such as a fluororesin coating, a nano coating, a polydimethylsilane coating or PTFE to reduce the adhesion of organisms to the cleaning component 50 and enhance the service life of the cleaning component 50.

[0053] In some embodiments, the brush portion 522 may be configured as an integrated structure, and its length is similar to that of the cleaning frame.

[0054] In some embodiments, a through hole is provided in the middle of the brush portion 522 to reduce the blocking effect of the brush portion 522 on water flow.

[0055] Furthermore, when the water flow is still or in a natural state, the distances between the cleaning rack 521 and two to four adjacent oyster cages 30 are substantially equal, so that the brush 522 can act on each oyster cage 30 more evenly.

[0056] In some embodiments, the length of the cleaning rack 521 is equal to or similar to the length of the oyster cage 30 , and the brushes are evenly arranged on the periphery of the cleaning rack 521 to increase the cleaning effect of the brushes on the oyster cage 30 .

[0057] Furthermore, the lifting mechanism 53 is arranged on a vertical floating tube 112, and includes a reeling portion 531 for reeling in the sling 511. One end of the sling 511 is connected to the reeling portion 531 of the lifting mechanism 53, and the other end passes through the mounting rod 512 and is fixedly connected to another vertical floating tube 112 away from the lifting mechanism 53. The lifting mechanism 53 raises the mounting frame 51 and the cleaning mechanism 52 by reeling in the sling 511, and overlaps with the plane where the oyster cage 30 is located, so that the swinging of the mounting frame 51 and the rotation and / or swinging of the cleaning mechanism 52 can clean the oyster cage 30; the lifting mechanism 53 lowers the mounting frame 51 and the cleaning mechanism 52 by releasing the sling 511, and staggers with the plane where the oyster cage 30 is located. In extreme weather such as typhoons, the lifting mechanism 53 is used to lower the mounting frame 51 and the cleaning mechanism 52, and stagger them from the plane where the oyster cage 30 is located, so as to avoid excessive collision between the cleaning mechanism 52 and the oyster cage 30, which may cause damage to the cleaning mechanism 52 and the oyster cage 30, affecting the subsequent cleaning effect and the growth state of oysters, causing economic losses, etc. At the same time, the cleaning component 50 is fixedly connected to the floating row component 10, and swings under the action of water flow and waves, which can dissipate the energy input of wind and waves to the floating row, thereby reducing the impact of wind and waves on the overall cage culture system, so that the floating row can maintain a relatively stable state in the wind and waves. At the same time, this swing allows the floating row component to adapt to the changes of wind and waves more flexibly, reduce excessive stress and deformation caused by wind and waves, and help to extend the service life of the floating row and reduce maintenance costs.

[0058] Furthermore, in some embodiments, the lifting mechanism 53 includes an operating part and a locking part. The reeling part 531 of the lifting mechanism 53 is a rotating roller. The operating part rotates the rotating roller under the action of an external force to reel in or release the sling 511. The locking part is used to lock the rotating roller and lock the length of the released sling 511, thereby maintaining the desired depth of the mounting rod 512. When the depth of the mounting rod 512 needs to be adjusted, the locking part is in an unlocked state, and the operating part is controlled to reel in or release the sling 511. After the mounting rod 512 reaches the desired position, the locking part locks the rotating roller.

[0059] Furthermore, in some embodiments, the lifting mechanism 53 includes a controller, which is electrically connected to the reeling portion 531 and is used to control the reeling portion 531 to reel in or release the sling 511 .

[0060] In some embodiments, at least two mounting frames 51 are controlled by the same lifting mechanism 53 to improve the convenience of operation. The lifting mechanism 53 also includes a mounting plate 532. Several mounting plates 532 are arranged at intervals along the winding portion 531. Several winding grooves are formed on the winding portion 531. The winding grooves are used to fix the suspension rope 511 of a mounting frame 51, so as to avoid the suspension ropes 511 of several mounting frames 51 from being entangled with each other and affecting the lifting effect. At the same time, the weight of the mounting frame 51 is evenly distributed to make the entire cleaning assembly 50 and the floating row assembly 10 more stable.

[0061] In some embodiments, each cleaning assembly 50 is provided with two lifting mechanisms 53 , which are respectively arranged on the vertical floating tubes 112 at both ends of the floating row assembly 10 , and both ends of the suspension rope 511 are respectively fixed to the winding part of a lifting mechanism 53 .

[0062] Furthermore, the floating raft assembly 10 also includes a float barrel, a connecting piece 14, a pedal 15 and a fixed pipe 16. Several of the float barrels are fixed to the bottom of the truss 11 and / or the bottom of the two first transverse connecting pipes 121a, and the narrow sides of the float barrels are arranged in the direction of the water flow to reduce the force of the water flow and waves on the floating raft body 10 and improve the stability of the floating raft body 10.

[0063] See also Fig.10 The connecting member 14 includes a bracket 141, which is an integrally formed bracket structure. The left and right sides of the bracket 141 are provided with plug holes 142. The floating tube or the connecting tube passes through the plug holes 142 to achieve the connection between the connecting member 14 and two adjacent floating tubes or two adjacent connecting tubes. The connecting member 14 connected to the floating tube also includes a handrail column 143 fixed on the top of the bracket 141. The handrail column 143 is located on the outside of the truss 11, and a plurality of connecting holes 143a are provided on the handrail column 143. The fixed tube 16 passes through the corresponding connecting holes 143a of each connecting member 14 in sequence, and is connected end to end in sequence to form a fixed frame. The multi-layer fixed frame further enhances the stability of the truss 11 and protects people walking on the pedals. Preferably, two connection holes 143a are provided on the handrail column 143, the distance between the two connection holes 143a is 50-70cm, and the height of the connection piece 14 with the handrail column 143 is 110-130cm.

[0064] The pedal 15 is arranged above the truss 11 and / or the connecting pipe. Specifically, a pedal mounting base is arranged on the top of the bracket 141, and the pedal 15 is fixedly connected to the pedal mounting base through a locking piece. Preferably, the width of the pedal is greater than 350 mm and the thickness is greater than 65 mm.

[0065] See also Fig.11The cage assembly 20 includes a frame 21 and a float 22, wherein the float 22 is disposed below the frame 21 and connected by a binding rope or a fastener. Specifically, the frame 21 includes a long tube 211, a short tube 212 and a support tube 213, wherein a plurality of the long tubes 211 and a plurality of the short tubes 212 are connected to each other to form the main body of the frame 21, and a plurality of support tubes 213 are disposed at intervals above the main body of the frame 21 for hanging the oyster cage 30.

[0066] In some embodiments, at least two of the long tubes 211 and at least two of the short tubes 212 are perpendicular to each other to form a rectangular frame body, a plurality of the support tubes 213 are spaced apart above the long tubes 211, extend along the length direction of the short tubes 212, and are fixedly connected to at least two of the long tubes 211, and at least two of the floats 22 are symmetrically arranged at the bottom of the frame 21 and are fixedly connected to the corresponding long tubes 211 and / or the short tubes 212, so as to provide buoyancy for the cage assembly 20 and maintain the balance and stability of the cage assembly 20.

[0067] Further, each of the cage assemblies 20 is arranged on at least two floating row units A. Specifically, the frame 21 of the cage assembly 20 is set on a common connecting pipe between at least two adjacent floating row units A, and the cage assembly 20 is located in the region of each floating row unit A. A plurality of oyster cages 30 are hung on the frame 21, and a plurality of floats 22 are fixed at the bottom. By setting the cage assembly 20 to be set on the connecting pipe between at least two floating row units A, it is convenient to mechanizedly install the cage assembly 20 and harvest the cage assembly 20. Further, the cage assembly 20 is connected to the truss 11 and / or the connecting pipe forming the floating row unit A by cables or fasteners, so as to improve the stability and wind and wave resistance of the oyster rack and prevent the cage assembly 20 from being separated from the floating row assembly 10.

[0068] Furthermore, in this embodiment, the frame 21 includes four long tubes 211 vertically arranged on two short tubes 212, and the short tubes 212 and the long tubes 211 are connected by a four-way piece or a hot-melt connection. The long tube 211 located outside the frame 21 and the adjacent long tubes 211 form a long tube assembly, and the two long tube assemblies are respectively arranged at the two ends of the short tubes 212, and extend to the outside of the two short tubes 212 in a direction perpendicular to the short tubes 212, so as to be connected to the floating row assembly 10. A plurality of support tubes 213 are arranged on the long tubes 211 at intervals, and are fixedly connected to the four long tubes 211. The support tubes 213 and the short tubes 212 extend to the outside of the four long tubes 211 in a direction perpendicular to the long tubes 211, so as to increase the number of oyster cages 30 that can be hung on the cage assembly 20.

[0069] Specifically, the frame 21 of the cage 20 is set on a common connecting pipe between at least two adjacent floating row units A, and a plurality of oyster cages are hung on the frame 21 of the cage 20 located in the area of ​​each floating row unit A, and a plurality of floats 22 are fixed at the bottom, and at least two cages are set on the two adjacent floating row units. By setting the cage 20 to be set on the connecting pipe between at least two floating row units A, it is convenient to mechanizedly install the cage 20 and harvest the cage 20. Furthermore, the cage 20 is connected to the truss 11 and / or the connecting pipe forming the floating row unit A by cables or fasteners, so as to improve the stability and wind and wave resistance of the oyster rack and prevent the cage 20 from being separated from the floating row body 10.

[0070] Furthermore, one end of the long tube 211 of the cage 20 is laid on the truss 11 and is clamped with the connecting piece 14 on the truss 11, and one end is laid on the first transverse connecting pipe 121a and is clamped with the connecting piece 14 on the first transverse connecting pipe 121a, thereby facilitating the rapid installation of the cage 20 and the floating row body 10.

[0071] Furthermore, the cage 20 also includes hooks, and a plurality of the hooks are symmetrically arranged on the frame 21 . The hooks cooperate with the hooks of the boom to facilitate the installation or harvesting of the cage 20 by the boom of the work boat.

[0072] In some embodiments, the oyster cage 30 includes a mesh cage and a multi-layer partition disposed in the mesh cage. The mesh cage is provided with a plurality of flexible cables passing through and fixing the partition. The mesh cage is divided into a plurality of culture chambers by the partition. The top of the mesh cage is connected to the cage frame assembly 20 by cables. When the oyster cage 30 is used, the flexible cables increase the flexibility of the entire oyster cage 30, so that the flexible cables can move with the wind and waves, which can improve the wind and wave resistance and unit water yield of the oyster cage 30. A plurality of small holes are provided on the partition for water circulation, providing a good growth environment for oysters, and improving the meat quality and meat yield of oysters. When not in use, the partitions can be stacked to reduce the occupied space and be convenient to use.

[0073] In some embodiments, the cage assembly 20 further includes fasteners, and a plurality of the fasteners are fixedly mounted on the support tube 213 and / or the short tube 212. The oyster cage 30 is connected to the fasteners by cables, and the fasteners are manually opened and closed to facilitate quick installation or removal of the oyster cage 30. When the brush portion 522 of the cleaning assembly 50 contacts the oyster cage 30, the brush portion 522 directly rubs against at least part of the mesh cage to clean up the sediment deposited on the mesh cage, and at the same time helps to rub off the organisms that are about to attach to the mesh cage, thereby reducing the attached organisms and avoiding cleaning after the organisms are firmly attached, which increases the difficulty of cleaning. In addition, the brush portion 522 collides with the partition to promote the shaking off of the sediment on the partition and the surface of the mesh cage, thereby improving the cleaning effect.

[0074] Furthermore, a knot for fixing the partition is provided on the flexible cable under each partition, the flexible cable is formed by cross-weaving multiple fiber strands, the partition is a horizontally arranged partition, or a conical plate or an arc plate that is concave downward, the conical plate and the arc plate can save breeding space and increase the oyster yield, and at the same time can reduce the impact of wind and waves on the oyster cage 30 and oysters, and extend the service life.

[0075] Further, in some embodiments, the net cage culture system includes a net, and the outer side of the net cage 31 of each oyster cage 30 is detachably connected to a net, the aperture of the net is smaller than the aperture of the net cage 31, and is used to filter the sediment, attached organisms, etc. in the water flow, and reduce the deposition of sediment and attached organisms at the oyster cage 30. By regularly replacing the net, the net is transported to the factory for cleaning, thereby reducing the frequency of cleaning the oyster cage 30, and further reducing the impact of the cleaning process on the growth of oysters. Preferably, the net is detachably connected to the cage frame 20, and is sleeved on the outside of all oyster cages 30 on the cage frame 20, or the net is detachably connected to the floating row assembly 10, and is sleeved on the outside of each floating row unit A or all oyster cages 30 in the floating row assembly 10.

[0076] Furthermore, the anchoring assembly 40 includes anchor piles 41, and a plurality of the anchor piles 41 are symmetrically arranged on the outside of the floating row assembly 10 and are respectively connected to the width direction of the floating row assembly 10. By fixing the anchor piles 41 on both sides of the width direction of the floating row assembly 10, the influence of wind and waves on the width direction of the floating row assembly 10 is reduced, thereby further improving the wind and wave resistance of the oyster rack.

[0077] Furthermore, in some embodiments, the cage culture system further includes a remote communication module for realizing remote signal interaction between the controller and the external control terminal, so as to facilitate the farmer to remotely control the lifting mechanism 53. When the farmer receives a wind and wave warning, he can timely control the sinking of the cleaning rack 521 through the remote communication module to stagger the oyster cage 30, thereby reducing the excessive collision of the cleaning rack 521 with the oyster cage 30 in extreme weather such as typhoons.

[0078] Furthermore, the buoyancy of the cleaning assembly 50 is set to be equal to or slightly smaller than its gravity, so as to reduce the force exerted by the cleaning assembly 50 on the floating assembly 10, especially the force exerted in the vertical direction.

[0079] Furthermore, the truss 11 and the connecting pipe are made of high-density polyethylene (HDPE) material, and the connecting piece 14 is injection molded using HDPE raw material. More preferably, the second transverse connecting pipe 121b is an HDPE pipe with reinforcing ribs or reinforcing layers inside to withstand the downward pressure of the cage assembly 20 on the second transverse connecting pipe 121b. By enhancing the strength of the local position of the floating raft body 10, the floating raft body 10 can reduce the gravity and increase the buoyancy as much as possible while increasing the strength of the position that mainly bears the gravity or pressure of the oyster cage, thereby preventing the floating raft body 10 from being damaged or falling apart due to insufficient strength, resulting in the loss of the oyster cage and affecting economic benefits. In addition, the floating raft body made of HDPE raw material has the advantages of being more wear-resistant, UV-resistant, better ductility, corrosion-resistant and high-temperature-resistant, and can avoid seawater immersion and long-term sun and rain corrosion of the floating raft body, resulting in its damage and difficulty in repair.

[0080] Furthermore, in some embodiments, the floating pipe uses a HDPE pipe with an outer diameter of 315 mm and a wall thickness greater than or equal to 12 mm, the connecting pipe uses a HDPE pipe with an outer diameter greater than 300 mm and a wall thickness greater than or equal to 15 mm, the long pipe 212 and the short pipe 211 use a HDPE pipe with an outer diameter of 125 mm and a wall thickness greater than or equal to 7.4 mm, the supporting pipe 213 uses a HDPE pipe with an outer diameter of 90 mm and a wall thickness greater than or equal to 6.7 mm, and the specifications of the floating barrel and the float 22 are 0.94 m long, 0.58 m wide, and 0.62 m high. In other embodiments, the sizes of the truss 11, the connecting pipe, the long pipe 212, the short pipe 211, and the supporting pipe 213 can be set according to specific needs.

[0081] Further, in some embodiments, the support tube 213 and the short tube 212 are provided with reinforcing ribs or reinforcing layers inside to improve the strength of the HDPE tube, and the materials of the reinforcing ribs or reinforcing layers include reinforcing materials such as glass fiber. By enhancing the strength of the support tube 213 and the short tube 212, they can withstand the pulling force of the support tube 213 and the short tube 212 by a number of oyster cages 30 when the cage assembly 20 is hoisted, thereby improving the strength and stability of the cage assembly 20. In addition, when the support tube 213 is damaged by force, the support tube 213 and / or the short tube 212 detachably connected by a four-way piece can facilitate the farmers to repair and replace; the long tube 211 is HDPE, and the interior is hollow or filled with hydrophobic rock wool or other environmentally friendly fillers, so as to provide better buoyancy support at sea and ensure safety in use. The long tube 211 and the float 22 provide buoyancy for the cage assembly 20 together, reduce the pressure of the cage assembly 20 on the floating row assembly, and reduce the damage of the connecting pipe after being compressed. By setting up local strength reinforcement of the frame 21 and local buoyancy reinforcement, the cage assembly 20 can reduce gravity as much as possible, increase buoyancy, and improve the strength of the position where the cage assembly 20 hangs the oyster cage 30, thereby preventing the cage assembly 20 from being damaged or falling apart due to insufficient strength, resulting in the loss of the oyster cage and affecting economic benefits.

[0082] Furthermore, the second transverse connecting tube 121b is a HDPE tube with a reinforcing rib or a reinforcing layer inside to withstand the downward pressure of the cage assembly 20 on the second transverse connecting tube 121b. In some embodiments, the first transverse connecting tube 121a and the transverse floating tube 111b are reinforced tubes, and the connection between the connecting tube and the truss 11 is strengthened by a member.

[0083] Furthermore, a reinforcement structure is provided on the outside of the connection between the floating tube and the connecting tube, the connection between the floating tube and the connecting tube and the connecting piece 14, and the connection between the floating tube and the suspension rope 511 or the lifting mechanism 53, and / or a reinforcement structure is provided on the inside of the corresponding connection of the floating tube to enhance the strength of the connection and avoid deformation or damage of the connection due to stress.

[0084] In some embodiments, the structure of the float 22 is similar to that of the floating bucket, except that the diameter of the insertion hole of the float 22 is smaller than that of the insertion hole of the floating bucket. In some embodiments, the float 22 includes a floating bucket body 131 and a connecting member 132, and the floating bucket body 131 includes a streamlined barrel body and a raised portion provided above the streamlined barrel body, and the raised portion is provided with a recessed placement groove. The support pipe 213 can pass through the placement groove and be connected to the float 22, further enhancing the stability of the cage assembly 20 and preventing the cage assembly 20 from being blown away by strong winds.

[0085] Affected by prevailing winds, the deflection of the earth's rotation, etc., the direction of water flow in the sea area where the cage culture system is located is usually mainly in one direction, but the intersection of cold and warm currents, the influence of terrain, seasonal changes, tides and other factors will cause the direction and intensity of water flow, wind and waves to change frequently, and these changes will cause the mounting frame 51 to swing and the cleaning mechanism 52 to rotate. In this embodiment, during the oyster farming process, the cleaning mechanism 52 rotates and / or swings under the influence of water flow, wind and waves, causing the free end of the brush part 522 to rub and collide with the oyster cage 30, and then at least a part of the sediment and attached organisms deposited on the oyster cage 30 are cleaned by the brush part 522, thereby extending the time interval for cleaning the oyster cage 30 on the water from 1 to 2 months to 3 to 5 months, reducing the workload and cost of farmers in oyster farming, and also reducing the impact of water cleaning on oysters.

[0086] Example 2

[0087] The structure of the self-cleaning modular gravity cage culture system provided in this embodiment is similar to that of Embodiment 1, except that the length direction of the mounting rod 512 is arranged in the direction of the water flow, that is, the mounting rod 512 is parallel to the vertical floating tube 112, the lifting mechanism 53 is installed on the transverse floating tube 111, and the lifting rope 511 is connected to the transverse floating tube 111 and / or the lifting mechanism 53.

[0088] In some embodiments, each cleaning assembly 50 is disposed between the transverse floating tube 111 and the first transverse connecting tube 121a adjacent thereto. Preferably, each cage assembly 20 includes two short tubes 212 and six supporting tubes 213, on which 4 to 6 oyster cages 30 can be hung, and each cleaning assembly 50 is provided with four cleaning mechanisms 52, each cleaning mechanism 52 being responsible for cleaning 3 to 4 adjacent oyster cages 30.

[0089] In some embodiments, each cleaning assembly 50 is disposed between the transverse floating tubes 111 at both ends of the floating row assembly 10. Preferably, each cleaning assembly 50 is provided with eight cleaning mechanisms 52, and each cleaning mechanism 52 is responsible for cleaning 3 to 4 adjacent oyster cages 30.

[0090] In this embodiment, affected by the main water flow direction, the mounting rod 512 swings and collides with the oyster cage 30. At the same time, the water flow and wind and waves will cause the cleaning mechanism 52 to rotate, causing the brush portion 522 to rub and collide with the oyster cage 30. The synergistic effect of the swing of the mounting rod 512 and the rotation of the cleaning mechanism 52 can increase the contact surface between the brush portion 522 and the oyster cage 30, thereby enhancing the cleaning effect of the brush portion 522 on the oyster cage 30, thereby extending the time interval for cleaning the oyster cage 30 on the water from 1 to 2 months to 4 to 5 months, reducing the workload and cost of farmers in oyster farming, and also reducing the impact of water cleaning on oysters.

[0091] Example 3

[0092] See also Figure 12-13 The structure of the self-cleaning modular gravity cage culture system provided in this embodiment is similar to that of Embodiment 1 or Embodiment 2, except that the cleaning mechanism 52 is arranged between two adjacent oyster cages 30, the two adjacent oyster cages 30 are respectively located on both sides of the mounting rod 512, the cleaning rack 521 is fixed to the mounting rod 512, and a brush 522 is respectively arranged on both sides of the cleaning rack 521 close to the two adjacent oyster cages 30. Under the action of water flow and waves, the mounting rod 512 swings between the two adjacent oyster cages 30, driving the cleaning rack 521 to swing, so that the brush 522 contacts the adjacent oyster cages 30, and the oyster cages 30 are cleaned.

[0093] Preferably, the brush portion 522 is an inverted triangle structure, that is, the length of the upper end of the brush portion 522 is greater than the length of the lower end. When the cleaning rack 521 swings to form a certain angle with the vertical plane, the free end of the brush portion 522 collides and rubs with one of the two adjacent oyster cages 30, thereby cleaning the oyster cage 30 and reducing the obstruction and adsorption of the brush portion 522 on the water flow. Preferably, the plane formed by the free end of the brush portion 522 forms an angle a with the vertical plane. When the cleaning rack 521 swings to form an angle greater than the angle a with the vertical plane, the free end of the brush portion 522 collides and rubs with the oyster cage 30.

[0094] In other embodiments, the top end of the cleaning rack 521 is movably connected to the mounting rack 512, and the cleaning rack 521 can swing relative to the mounting rod 512 between the two adjacent oyster cages 30, approaching or moving away from one oyster cage 30, so that the free end of the brush portion 522 collides and rubs against the oyster cage 30.

[0095] In some embodiments, the mounting rod 512 is provided with at least one slide rail along its length direction, and a plurality of the cleaning racks 521 are respectively slidably disposed in a slide rail, and the length of the slide rail is equal to the distance between two to four oyster cages 30 continuously arranged along the length direction or the width direction of the floating row assembly 10. Under the action of water flow, wind and waves, the cleaning rack 521 slides along the slide rail. At the same time, the mounting rod 512 and / or the cleaning rack 521 swing, so that the brush portion 522 collides and rubs against the oyster cages 30 on both sides of the mounting rod 512.

[0096] In this embodiment, affected by the main water flow direction, the swing of the mounting rod 512 drives the cleaning mechanism 52 to swing, causing the brush portion 522 to collide and rub against the oyster cages 30 on both sides, thereby causing at least a portion of the sediment and attached organisms on the oyster cages 30 to be cleaned by the brush portion 522, thereby extending the time interval for cleaning the oyster cages 30 on the water from 1 to 2 months to 3 to 5 months, thereby reducing the workload and cost of farmers in oyster farming, and also reducing the impact of water cleaning on oysters.

[0097] Example 4

[0098] See also Figure 14-16 The structure of the self-cleaning modular gravity cage culture system provided in this embodiment is similar to that of Embodiment 1 or Embodiment 2, except that the structure of the brush portion 522 is different: the brush portion 522 includes a plurality of brush heads 523 with similar structures, the plurality of brush heads 523 are arranged along the length direction of the cleaning rack 521 and are fixedly connected to the cleaning rack 521, and the projections of the plurality of brush heads 523 on the horizontal plane at least partially do not overlap, that is, the angles between the plurality of brush heads and the mounting rod 512 are not equal, so that the water flow in the same direction has a larger area when contacting the cleaning rack 521 at different rotation angles, which is sufficient to push the cleaning rack 521 to rotate a larger angle or rotate for a longer time, thereby promoting the brush head 523 to fully contact the oyster cage 30. At the same time, it is prevented that the brush head 523 located below causes obstruction to the attachments and sediments cleaned above, causing them to be re-deposited on the oyster cage 30.

[0099] Preferably, the angle between any two brush heads 523 is less than 180°, so that when the cleaning rack 521 is rotated to any angle, the blocking area of ​​the water flow is small, reducing the obstruction to the water flow, promoting the flow of water, and allowing the water in the cage culture system area to fully exchange with the external water body, thereby improving the cleanliness and nutrient content of the water body and promoting the growth of oysters. More preferably, the angle between any two brush heads 523 is 60-120°, more preferably 90°, further reducing the blocking area of ​​the brush part 522 to the water flow, allowing the water flow to flow smoothly, and at the same time, the smooth water flow will drive the brush part 522 to rotate at a suitable speed, while cleaning the oyster cage 30, while reducing damage to the oyster cage 30.

[0100] In this embodiment, affected by the main water flow direction, the mounting rod 512 swings and collides with the oyster cage 30. At the same time, the water flow and wind and waves will cause the cleaning mechanism 52 to rotate, causing the brush portion 522 to rub and collide with the oyster cage 30. The synergistic effect of the swing of the mounting rod 512 and the rotation of the cleaning mechanism 52 can increase the contact surface between the brush portion 522 and the oyster cage 30, thereby enhancing the cleaning effect of the brush portion 522 on the oyster cage 30, thereby extending the time interval for cleaning the oyster cage 30 on the water from 1 to 2 months to 4 to 6 months, reducing the workload and cost of farmers in oyster farming, and also reducing the impact of water cleaning on oysters.

[0101] In summary, compared with the prior art, the oyster culture method and the fish-oyster polyculture method provided by the present invention have the following beneficial effects:

[0102] (1) Compared with the prior art that requires oyster cages to be lifted out of the water for cleaning every 1 to 2 months, the present invention arranges cleaning components between adjacent oyster cages. Driven by water flow, wind and waves, the cleaning components swing and / or rotate, thereby colliding or rubbing against the oyster cages, causing the sediment deposited on the oyster cages to be shaken off or rubbed off, and the organisms that are about to attach or have just attached to the oyster cages are promptly shaken off or rubbed off in the early stages of attachment, thereby promoting sufficient exchange of water in the oyster cages with external water, so that the water in the oyster cages has sufficient nutrients and oxygen for the growth of oysters, thereby extending the time interval for cleaning the oyster cages on the water to 3 to 6 months.

[0103] (2) Compared with the prior art, in which the oyster cages need to be lifted out of the water for cleaning each time, the present invention provides the oyster rack with three separable modules: a floating rack, an oyster cage, and a cage frame assembly, so that farmers can use the crane arm of the working boat to lift the cage frame out of the sea or connect it to the floating rack body, thereby facilitating farmers to clean the oyster cages and cage frames and observe the oyster farming conditions, thereby reducing the time and cost of manually cleaning each oyster cage one by one. At the same time, farmers can fix or separate the oyster cages from the cage frames on the working boat or on the shore, which makes it easier and safer to harvest and raise oysters. On the other hand, it can reduce the farmers' offshore operation time and prevent offshore operations from being affected by weather, thereby affecting the progress of oyster farming. At the same time, it also improves the safety of the farmers' working environment.

[0104] (3) By setting up a lifting mechanism, the mounting frame and the cleaning mechanism can be lowered in extreme weather such as typhoons, and staggered from the plane where the oyster cages are located, so as to avoid damage to the mounting frame, the cleaning mechanism, and the oyster cages caused by excessive collision between the mounting frame and the cleaning mechanism and the oyster cages, affecting the subsequent cleaning effect and the growth state of oysters, causing economic losses, etc. At the same time, the cleaning component is fixedly connected to the floating row component and swings under the action of water flow and waves, which can dissipate the energy input of wind and waves to the floating row, thereby reducing the impact of wind and waves on the overall cage culture system, so that the floating row can maintain a relatively stable state in wind and waves. At the same time, this swing enables the floating row component to adapt to changes in wind and waves more flexibly, reduce excessive stress and deformation caused by wind and waves, and help to extend the service life of the floating row and reduce maintenance costs.

[0105] (4) By configuring the brush portion to have an inverted triangle structure, a separated structure, or an internally hollow structure, the brush portion's blocking effect on water flow is reduced, allowing the water in the cage culture system to be fully exchanged with the external water, providing a better growth environment for oysters. At the same time, it helps to reduce the brush portion's blocking or adsorption effect on algae and other plankton, allowing oysters to be exposed to sufficient nutrients, thereby promoting oyster growth.

[0106] (5) By setting the free end of the brush to a silicone brush or other irregular shapes instead of a bristle brush, the adsorption effect of the brush on algae and other plankton is reduced, and further coating the surface of the brush body, the mounting rod, and the cleaning rack with anti-adhesion material to reduce the adsorption effect of the brush on algae and other plankton, thereby reducing the impact of the cleaning component on the growth of oysters and extending the service life of the cleaning component.

[0107] (6) The oyster rack described in the present invention is mainly made of HDPE raw material, which has the advantages of being more wear-resistant, UV-resistant, better ductile, corrosion-resistant and high-temperature-resistant; in addition, the connecting pipe of the supporting cage assembly and the supporting pipe of the oyster cage are arranged as reinforced pipes to improve the strength and service life of the oyster rack, so that the floating rack can still maintain the structural integrity and stability under severe sea conditions; while other parts are not reinforced to reduce the weight of the oyster rack and improve the buoyancy of the oyster rack. The increase in buoyancy helps to offset the downward pressure on the oyster rack caused by wind and waves, and reduce the possibility of the floating rack tilting, sinking or even capsizing.

[0108] (7) The self-cleaning modular gravity cage culture system provided by the present invention maintains stability through anchoring components and its own weight, and has the advantages of strong wind and wave resistance (15-level typhoon) and good stability. It has the characteristics of wide application sea area, large culture capacity, high efficiency, friendly to seawater environment, long service life, easy anchoring, and matching mechanized operation, and is very suitable for the construction of COSCO oyster farms.

[0109] (8) By setting the width direction of the floating row assembly to face the water flow, the waves mainly act on the width direction of the floating row assembly rather than the length direction, thereby reducing the impact of the waves on the floating row assembly by reducing the effective area; at the same time, by setting anchor piles and cement sinkers on both sides of the width direction of the floating row assembly to fix the floating row assembly, the influence of the wave impact on the stability of the floating row assembly is reduced.

[0110] (9) By setting the truss of the floating row assembly to be a U-shaped structure connected together by hot melting, and connecting adjacent floating tubes together through multiple connectors, it is not easy to fall apart, thereby improving the stability and wind and wave resistance of the truss; by setting the corners of the truss to be streamlined, the stress concentration phenomenon at the edge of the truss is reduced, and damage caused by excessive local stress is avoided. At the same time, the streamlined design can reduce the friction resistance and shape resistance between the floating row assembly and the water flow, and reduce the adverse conditions such as tilting and rolling caused by wave action; by connecting multiple connecting tubes to the inner side of the truss to form a stable mesh structure, and connecting multiple fixed tubes to form a multi-layer rectangular frame through the handrail columns of the connecting parts, further The stability of the truss is enhanced, and the multi-layer rectangular frame can protect people walking on the pedals, which is convenient for farmers to work and for tourists to go on leisure fishing sightseeing; the vertical connecting pipes on both sides of the second horizontal connecting pipe are connected to the second horizontal connecting pipe through tees respectively, so that the force application points of the vertical connecting pipes on both sides on the second horizontal connecting pipe are more dispersed, and the force points of the second horizontal connecting pipe are prevented from being easily damaged due to stress concentration. By opening a through hole in the connecting piece, the weight of the connecting piece is reduced, and the buoyancy of the floating row assembly is increased. At the same time, the waves can partially pass through the through hole of the connecting piece, thereby reducing the direct impact force of the waves on the front of the connecting piece, thereby reducing the damage and shaking of the floating row assembly.

[0111] The present invention is not limited to the above-mentioned embodiments. If various changes or modifications to the present invention do not depart from the spirit and scope of the present invention, and if these changes and modifications fall within the scope of the claims and equivalent technologies of the present invention, the present invention is also intended to include these changes and modifications.

Claims

1. A self-cleaning modular gravity cage culture system, characterized in that: include: A floating row assembly comprises a truss and connecting pipes, wherein a plurality of the connecting pipes are connected to the inside of the truss, and the connecting pipes and the truss and / or the plurality of connecting pipes are enclosed to form a plurality of floating row units arranged in a rectangular array; The cage assembly comprises a frame and floats, each frame is arranged on two adjacent floating row units, two ends of the frame are respectively connected to two ends of the two adjacent floating row units, and a plurality of floats are fixedly arranged under the frame; A plurality of oyster cages, hung on the frame, for oyster farming; The cleaning assembly comprises a mounting frame and a cleaning mechanism, wherein the mounting frame is connected to the floating row assembly and can swing relative to the floating row assembly; a plurality of cleaning mechanisms are arranged at intervals along the mounting frame; each cleaning mechanism can contact at least two adjacent oyster cages, and / or each oyster cage can contact at least one cleaning mechanism.

2. The self-cleaning modular gravity cage culture system according to claim 1, characterized in that: The mounting frame includes a hanging rope and a mounting rod, the hanging rope connects two ends of the mounting rod to the truss and / or the connecting pipe, and the mounting rod is roughly parallel to the length direction or width direction of the truss; the cleaning mechanism includes a cleaning rack and a brush part, a plurality of the cleaning racks are arranged at intervals along the length direction of the mounting rod, the cleaning rack is connected to the mounting rod, the brush part is connected to the cleaning rack, is roughly parallel to the oyster cage, and the length of the brush part is equal to or similar to the length of the oyster cage; the mounting rod and / or the brush part are rotatably connected to the cleaning rack.

3. The self-cleaning modular gravity cage culture system according to claim 2, characterized in that: Each cleaning rack is arranged between two to four adjacent oyster cages, and the spacing between the two to four adjacent oyster cages is roughly equal, and each oyster cage is adjacent to only one cleaning rack; the end of the brush portion away from the cleaning rack contacts the oyster cage and is arranged in a serrated or wavy shape, or a plurality of silicone bristles are arranged on the end of the brush portion that contacts the oyster cage.

4. The self-cleaning modular gravity cage culture system according to claim 2, characterized in that: The brush portion includes a plurality of brush heads, which are arranged along the length direction of the cleaning frame and fixed to the cleaning frame, and the projections of the plurality of brush heads on the horizontal plane at least partially do not overlap.

5. The self-cleaning modular gravity cage culture system according to claim 4, characterized in that: The included angle of projections of any two brush heads in the brush portion on a horizontal plane is less than 180°.

6. The self-cleaning modular gravity cage culture system according to claim 2, characterized in that: The main body of the brush part is made of silicone, PTFE or graphene, or the surface of the main body of the brush part is coated with a fluororesin coating, a nano coating, a polydimethylsilane coating or PTFE.

7. The self-cleaning modular gravity cage culture system according to any one of claims 2 to 6, characterized in that: The cleaning component includes a lifting mechanism, which is fixed to the truss. The lifting mechanism includes a winding portion. One end of a suspension rope of the cleaning component is fixed to the winding portion, and the other end is fixed to an end of the truss away from the lifting mechanism. The winding portion controls the depth of the cleaning mechanism by winding or releasing the suspension rope, so that the cleaning mechanism overlaps or is offset from the plane where the oyster cage is located.

8. The self-cleaning modular gravity cage culture system according to claim 7, characterized in that: The floating row body includes a truss and connecting pipes. The truss includes floating pipes. Several of the floating pipes are arranged in a U-shape or a quasi-U-shape, and the floating pipes are connected by hot melting. Several connecting pipes are connected to the inside of the truss, and the connecting pipes and / or the connecting pipes and the truss are enclosed to form a plurality of floating row units arranged in a rectangular array.

9. The self-cleaning modular gravity cage culture system according to claim 8, characterized in that: The middle part of each cage frame is laid on the common connecting pipe of two adjacent floating row units, and the ends of the frame are laid on the floating pipes and / or connecting pipes on both sides of the two adjacent floating row units, and / or the frame is connected to the floating pipes and / or connecting pipes on both sides of the two adjacent floating row units through cables or fasteners; a plurality of floats are respectively arranged in the area of ​​the frame located in each floating row unit; a plurality of hooks are arranged on the frame for connecting the boom.

10. The self-cleaning modular gravity cage culture system according to claim 9, characterized in that: It also includes a net with an aperture smaller than that of the oyster cage, and several of the nets are detachably connected to the outsides of the several oyster cages; or, the net is detachably connected to the cage frame, the floating row unit or the truss, and is mounted on the outsides of all oyster cages on the cage frame, the floating row unit or the truss.

Images