A fish farming net cage apparatus, system and method of operation thereof

Abstract

This invention discloses a fish farming cage device, system, and operating method, relating to the field of aquaculture technology. The device includes a floating frame that floats on the water surface, with flexible retaining walls surrounding its sides. A cage body is suspended from the bottom of the floating frame, and a water-passing device communicating with external water is provided on the side of the cage body. A sewage discharge module is located at the bottom of the cage body, capable of discharging fish waste into an external solid-liquid separation device. An inner liner-type catching cage is placed inside the cage body, its internal space forming a fish farming space, and can be lifted upwards from within the cage body. The fish farming cage system and operating method formed by multiple fish farming cage devices of this invention allow for convenient catching of fish within the cage by lifting the inner liner-type catching cage, without needing to drain the pond water.

Description

Technical Field

[0001] This invention relates to the field of aquaculture technology, and in particular to a fish farming cage device, system, and operating method thereof. Background Technology

[0002] With global population growth and increasing demand for high-protein foods, the aquaculture industry is facing unprecedented pressure. Traditional aquaculture methods not only consume vast amounts of land resources but also easily lead to water pollution and ecological damage. Therefore, developing efficient and environmentally friendly aquaculture technologies has become an urgent issue. Integrated, fixed-type, water-based environmentally friendly fish cage technology has emerged to address this need. By setting up fixed cages of specific sizes and shapes in the water, fish are raised using natural water resources, effectively solving many problems associated with traditional aquaculture methods.

[0003] However, existing integrated fixed water-based cages require draining the entire pond before fish can be caught inside, making fishing difficult. Therefore, there is an urgent need to design a cage device that allows for convenient fishing without draining the entire pond. Summary of the Invention

[0004] The purpose of this invention is to provide a fish farming cage device, system and its operation method to solve the problems existing in the prior art. By lifting the inner liner of the fishing cage upward, the fish inside can be easily caught without draining the pond water.

[0005] To achieve the above objectives, the present invention provides the following solution:

[0006] This invention provides a fish farming cage device, comprising:

[0007] A floating frame that floats on the water surface, with a flexible retaining wall surrounding its sides;

[0008] The box body is suspended at the bottom of the floating frame, and the side of the box body is provided with a water passage device that communicates with the external water body;

[0009] The sewage discharge module is located at the bottom of the box body and can discharge fish feces into an external solid-liquid separation device;

[0010] The inner liner of the fishing box is placed inside the box body, and its internal space forms a fish farming space, which can be lifted upward from inside the box body.

[0011] Optionally, the box body includes multiple boxes with openings at both the top and bottom, and adjacent boxes are connected by a water-passing device; the top of the uppermost box is connected to the bottom of the floating frame by a clamp.

[0012] Optionally, the water-passing device includes multiple nylon mesh water-passing windows, which are arranged around the side of the tank body and located between two adjacent tank bodies, and are fixedly connected to the adjacent tank bodies. A nylon mesh water-passing window is a filter window made of nylon mesh, commonly used in water treatment systems to filter impurities and suspended solids in water. This design ensures that larger particles of impurities are intercepted while water flows through, thus providing a preliminary filtration effect.

[0013] Optionally, both the flexible retaining wall and the box body are made of PVC knife-coated cloth. PVC knife-coated cloth is a special PVC (polyvinyl chloride) coated fabric. It is coated with PVC resin on a base fabric through a knife-coating process to form a material with high strength and wear resistance.

[0014] Optionally, the sewage discharge module includes a conical sewage discharge hood fixedly installed at the bottom of the box body. A sewage discharge port is provided at the conical end of the bottom of the conical sewage discharge hood. An L-shaped sewage discharge pipe is fixedly connected to the sewage discharge port through a metal connector. The L-shaped sewage discharge pipe is connected to the solid-liquid separation device through a pipeline with a valve and a sewage pump.

[0015] Optionally, the metal connector includes an iron clamp and a drain pipe clamp. The iron clamp is located at the bottom of the conical drain cover and has a through hole coaxial with the drain outlet. The inner diameter of the through hole is not less than the inner diameter of the drain outlet. The drain pipe clamp is fixedly sleeved on the upper outer wall of the L-shaped drain pipe. After the top of the L-shaped drain pipe passes through the drain outlet, the iron clamp and the drain pipe clamp are fixedly connected by bolts.

[0016] Optionally, the inner liner fishing box has the same structure as the box body, with its top suspended from the bottom of the floating frame; and the bottom of the inner liner fishing box is provided with a conical cover, the bottom of the conical cover has a circular hole at the conical end, and a magnetic pressure strip washer is provided at the outer edge of the circular hole, the magnetic pressure strip washer can be attracted to the metal connector; a fishing pull rope is fixedly connected to the circular hole, and the end of the fishing pull rope is connected to the floating frame.

[0017] Optionally, it also includes a positioning rod, the bottom of which is fixedly provided with a threaded rod, and the inner wall of the top opening of the L-shaped sewage pipe is fixedly provided with an internal thread. The threaded rod can be threadedly connected to the top opening of the L-shaped sewage pipe, and the circular hole can be movably inserted through the positioning rod.

[0018] The present invention also provides a fish farming cage system, comprising a plurality of fish farming cage devices as described above;

[0019] The sewage discharge module of the fish farming cage device is connected to a sewage discharge branch pipe. The sewage discharge branch pipe is equipped with a solenoid valve, and the solenoid valve is connected to a control device. The end of the sewage discharge branch pipe is connected to a main sewage discharge pipe, and the main sewage discharge pipe is connected to the solid-liquid separation device through a sewage pump.

[0020] The present invention also provides an operation method for a fish farming cage system, comprising the following steps:

[0021] Step 1: Suspend the assembled box body and sewage discharge module at the bottom of the floating frame;

[0022] Step two: Insert the positioning rod into the housing and connect it to the L-shaped drain port via the threaded rod.

[0023] Step 3: Pass the circular hole of the inner liner fishing box through the top of the positioning rod, then place the inner liner fishing box inside the box body, and use the push rod to push the magnetic pressure strip washer downward to make it adsorb and connect with the iron clamp plate.

[0024] Step 4: Rotate the positioning rod in the opposite direction to disengage the threaded rod from the L-shaped drain port, then remove the positioning rod.

[0025] Step 5: Fish farming operations are carried out inside the inner liner fishing box. When inspecting or catching fish, the positioning rod is reinserted and the fishing rope is pulled upwards to make the inner liner fishing box move up along the positioning rod to the set height.

[0026] When discharging waste, the solenoid valve and waste pump are opened, and the uneaten food and waste will be sucked into the main waste pipe through the waste discharge branch pipe, and then lifted to the solid-liquid separation device on the shore by the waste discharge pump. After solid-liquid separation, the fish waste can be utilized as a resource.

[0027] The present invention achieves the following technical effects compared to the prior art:

[0028] This invention features an upward-liftable inner liner for catching fish. By simply lifting the inner liner, the fish raised inside can be simultaneously pulled upwards, enabling catching without draining the pond. The wastewater discharge module facilitates the timely discharge of feed, waste, and other pollutants into a solid-liquid separation device on the shore, preventing water pollution. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the fish farming net cage device of the present invention;

[0031] Figure 2 This is a schematic diagram of the inner lining of the fish farming net cage device of the present invention;

[0032] Figure 3 This is a schematic diagram of the L-shaped sewage pipe and positioning rod of the present invention;

[0033] Figure 4 This is a schematic diagram of the fish farming cage system of the present invention.

[0034] In the diagram: 1-Floating frame, 2-Flexible retaining wall, 3-Clamping hoop, 4-Box body, 5-Nylon mesh water passage window, 6-Conical sewage hood, 7-L-shaped sewage pipe, 8-Inner liner of the fishing box body, 9-Conical cover, 10-Magnetic pressure strip washer, 11-Iron clamp, 12-Sewage pipe clamp, 13-Positioning rod, 14-Sewage branch pipe, 15-Solenoid valve, 16-Sewage main pipe, 17-Solid-liquid separation device, 18-Automatic control cabinet, 19-Threaded rod, 20-Sewage pump, 21-Fishing rope. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] The purpose of this invention is to provide a fish farming cage device, system and its operation method to solve the problems existing in the prior art. By lifting the inner liner of the fishing cage upward, the fish inside can be easily caught without draining the pond water.

[0037] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] refer to Figure 1 , Figure 2 and Figure 3As shown, one objective of this invention is to provide a fish farming cage device, comprising a floating frame 1, which is a three-dimensional frame structure composed of polyethylene pipes connected together, and floats on the water surface. Flexible baffles 2 surround the sides of the floating frame 1. The flexible baffles 2 are made of PVC scraped cloth and are held upright on the water surface by the buoyancy of the floating frame 1 to prevent fish from jumping out of the cage during the farming process. The cage body is suspended from the bottom of the floating frame 1 by clamps 3, and a water-passing device communicating with the external water body is provided on the side of the cage body. A sewage discharge module is located at the bottom of the cage body, capable of discharging fish waste into an external solid-liquid separation device 17. An inner liner-type catching cage 8 is placed inside the cage body, its internal space forming a fish farming space, and can be lifted upwards from inside the cage body. By installing an upward-liftable inner liner fishing box 8 inside the box body, the fish raised inside the inner liner fishing box can be lifted upwards simultaneously to achieve the fishing operation without draining the pond water; the sewage discharge module facilitates the timely discharge of feed, feces, etc. into the solid-liquid separation device 17 on the shore to avoid water pollution.

[0039] In a preferred embodiment, the cage body includes multiple cages 4 with openings at both the top and bottom. Adjacent cages 4 are connected by a water-passing device. The top of the uppermost cage 4 is connected to the bottom of the floating frame 1 via a clamp 3, and the uppermost cage 4 hangs 30cm below the water surface on all four sides. This design prevents the extruded pellet feed from overflowing the cage 4 when it is fed inside. The cage 4's design maintains a water-blocking effect, preventing fish waste from floating out of the cage and polluting the water due to the swaying of the water. In this embodiment, the water-passing device uses nylon mesh water-passing windows 5, which are arranged around the sides of the cage body and located between adjacent cages, and are fixedly connected to them. The purpose of the nylon mesh water-passing windows 5 is to facilitate water exchange between the cage body and the external environment.

[0040] In this embodiment, the inner liner fishing box 8 has the same structure as the box body. Its top is suspended from the bottom of the floating frame 1. The inner liner fishing box 8 is connected to the floating frame 1 at the water surface using stainless steel clamps 3. The inner diameter of the nylon net water passage window 5 in the box body is larger than that in the inner liner fishing box 8. The purpose of the nylon net water passage window 5 in the inner liner fishing box 8 is to block fish, while the purpose of the nylon net water passage window 5 in the box body is to maintain the permeability of the water. The bottom of the inner liner fishing box 8 is provided with a conical cover 9. The conical end of the conical cover 9 has a circular hole. A magnetic pressure strip washer 10 is provided on the outer edge of the circular hole. The magnetic pressure strip washer 10 can be attracted to the metal connector. A fishing pull rope 21 is fixedly connected to the circular hole. The end of the fishing pull rope 21 is connected to the floating frame 1.

[0041] In this embodiment, the inner liner fishing box 8 requires the assistance of a positioning rod 13 during installation. One end of the positioning rod 13 is equipped with a threaded rod 19. During initial installation or cyclic fishing operations, the threaded rod 19 at the bottom of the positioning rod 13 is inserted into the circular hole of the inner liner fishing box 8. Then, the threaded rod 19 is inserted into the top opening of the L-shaped sewage pipe 7. The threaded rod 19 is screwed into the internal thread of the top opening of the L-shaped sewage pipe 7 to achieve positioning. The operator holds a bamboo pole or push rod and pushes the magnetic pressure strip washer 10 of the inner liner fishing box 8 underwater, causing the bottom of the inner liner fishing box 8 to sink quickly. This causes the magnetic pressure strip washer 10 to attract the iron clamp at the bottom of the conical sewage collection hood under the action of magnetism, thus achieving the installation of the inner liner fishing box 8. After installation, the positioning rod 13 is rotated in the opposite direction to disengage the threaded rod 19 from the L-shaped sewage pipe 7. The positioning rod 13 can then be pulled out to expose the sewage outlet. A fishing rope is connected to the magnetic pressure strip washer 10. The other end of the fishing rope protrudes from the water surface and is usually tied to the flexible retaining wall 2. When it is time for regular inspection or fishing, first insert the positioning rod 13 and then pull the fishing rope upward to pull the magnetic pressure strip washer 10 along the positioning rod 13 upward to pull it out of the water surface and then you can retrieve the net to catch fish.

[0042] To achieve better sewage discharge, the sewage discharge module in this embodiment includes a conical sewage hood 6 fixedly installed at the bottom of the box body. The bottom of the box body is the box body, and the conical sewage hood is connected to the bottom box body to prevent fish feces from overflowing from the bend between the conical sewage hood and the box body. A sewage outlet is provided at the conical end of the bottom of the conical sewage hood 6. An L-shaped sewage pipe 7 is fixedly connected to the sewage outlet through a metal connector. The top opening of the L-shaped sewage pipe 7 is exposed inside the conical sewage hood for easy sewage discharge. Fish feces during the breeding process fall into the bottom of the conical sewage hood through natural sedimentation and accumulate at the top opening of the L-shaped sewage pipe 7. The L-shaped sewage pipe 7 is connected to the solid-liquid separation device 17 through a pipeline with a valve and a sewage pump 20.

[0043] To facilitate the installation of the L-shaped sewage pipe 7, the metal connector in this embodiment adopts a plate-like structure, which includes an iron clamp 11 and a sewage pipe clamp 12. The iron clamp 11 is located at the bottom of the conical sewage hood 6 and has a through hole coaxial with the sewage outlet. The inner diameter of the through hole is not less than the inner diameter of the sewage outlet. The sewage pipe clamp 12 is fixedly sleeved on the upper outer wall of the L-shaped sewage pipe 7. After the top of the L-shaped sewage pipe 7 passes through the sewage outlet, the iron clamp 11 and the sewage pipe clamp 12 are joined along the outer edge of the sewage outlet and fixedly connected by bolts, so that the top opening of the L-shaped sewage pipe 7 passes through the sewage outlet and is fixedly connected to the sewage outlet.

[0044] like Figure 4As shown, another objective of this invention is to provide a fish farming cage system, in which multiple fish farming cage devices as described above are evenly distributed in a body of water. The sewage discharge module of each fish farming cage device is connected to a sewage discharge branch pipe 14, and a solenoid valve 15 is installed on the sewage discharge branch pipe 14. The solenoid valve 15 is externally connected to a control device. The end of the sewage discharge branch pipe 14 is connected to a main sewage discharge pipe 16, which is connected to a solid-liquid separation device 17 via a sewage pump 20. The control line of the solenoid valve 15 is connected to an onshore automated control cabinet 18. The automated control cabinet 18 is equipped with a programming system and is an electrical control cabinet used for centralized management and control of various devices in an automated system. It includes various electrical and electronic components, such as relays, contactors, programmable logic controllers, frequency converters, and touch screens, used to monitor and control automated systems. This is existing technology. The programming system, or programmable logic controller, is also existing technology and will not be elaborated upon. The programming system sets the sewage discharge time and controls the solenoid valves 15 on each sewage branch pipe 14 to open and close the sewage discharge in a timed and sequential manner. The solenoid valves 15 connect the sewage branch pipes 14 to the main sewage pipe 16. The top of the main sewage pipe 16 is connected to the sewage pump 20. The control line of the sewage pump 20 is synchronously connected to the onshore automated control cabinet 18. When the programming system triggers the solenoid valves 15 to discharge sewage, it also triggers the start of the sewage pump 20. The residual feed and feces accumulated at the top opening of the L-shaped sewage pipe 7 will be instantly sucked into the main sewage pipe 16 through the sewage branch pipe 14 and then lifted by the sewage pump 20 to the onshore solid-liquid separation device 17. The fish feces separated by the solid-liquid separation device 17 can be utilized as a resource. The solid-liquid separation device 17 used in this invention is a device for separating solids and liquids. This device has wide applications in many industries, mainly in wastewater treatment, food processing, and chemical production, and is considered existing technology.

[0045] The present invention also provides an operation method for a fish farming cage system, comprising the following steps:

[0046] The assembled tank body and sewage discharge module are suspended at the bottom of the floating frame 1; the positioning rod 13 is inserted into the tank body and connected to the L-shaped sewage discharge port through the threaded rod 19; the circular hole of the inner liner catching tank 8 passes through the top of the positioning rod 13, and then the inner liner catching tank 8 is placed inside the tank body; the magnetic pressure strip washer 10 is pushed down by the push rod to make it adsorb and connect with the iron clamp 11; the positioning rod 13 is rotated in the opposite direction so that the threaded rod 19 is disengaged from the L-shaped sewage discharge port, and then removed. Positioning rod 13; fish farming operations are carried out inside the inner liner fishing box 8. When inspecting or fishing, the positioning rod 13 is reinserted and the fishing rope is pulled upwards, so that the inner liner fishing box moves up along the positioning rod 13 to the set height. When discharging sewage, the solenoid valve 15 and sewage pump 20 are opened. Uneaten feed and sewage will be sucked into the sewage main pipe 16 through the sewage branch pipe 14, and then lifted to the solid-liquid separation device 17 on the shore by the sewage pump 20. The fish excrement after solid-liquid separation can be utilized as a resource.

[0047] This invention solves the problem of having to drain the entire pond before catching fish in an integrated fixed water-based tank when fishing. It also overcomes the limitation of designing water-based tanks for large water bodies. The inner lining of the catching tank 8 allows for easy removal of the tank during the aquaculture process to inspect the fish, observe their growth, or conduct timed centralized fish collection. The fish can then be brought to the surface naked for small-dose drug soaking to prevent diseases and pests. This significantly reduces the drawbacks of using large doses of antibiotics in traditional high-density aquaculture models and avoids excessive antibiotic use in aquaculture.

[0048] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A fish farming cage device, characterized in that: include: A floating frame that floats on the water surface, and the sides of the floating frame are surrounded by flexible retaining walls; The box body is suspended at the bottom of the floating frame, and the side of the box body is provided with a water passage device that communicates with the external water body; The sewage discharge module is located at the bottom of the box body and can discharge fish feces into an external solid-liquid separation device; The inner liner of the fishing box is placed inside the box body, and its internal space forms a fish farming space. It can be lifted upward from inside the box body. The sewage discharge module includes a conical sewage discharge hood fixedly installed at the bottom of the box body. A sewage discharge port is provided at the conical end of the bottom of the conical sewage discharge hood. An L-shaped sewage discharge pipe is fixedly connected to the sewage discharge port through a metal connector. The L-shaped sewage discharge pipe is connected to the solid-liquid separation device through a pipeline with a valve and a sewage pump. The inner liner fishing box has the same structure as the main box, with its top suspended from the bottom of the floating frame. The bottom of the inner liner fishing box is provided with a conical cover, and the bottom of the conical cover has a circular hole at the conical end. A magnetic pressure strip washer is provided at the outer edge of the circular hole, and the magnetic pressure strip washer can be attracted to the metal connector. A fishing pull rope is fixedly connected to the circular hole, and the end of the fishing pull rope is connected to the floating frame. It also includes a positioning rod, the bottom of which is fixedly provided with a threaded rod, and the inner wall of the top opening of the L-shaped sewage pipe is fixedly provided with an internal thread. The threaded rod can be threadedly connected to the top opening of the L-shaped sewage pipe, and the circular hole can be movably inserted through the positioning rod.

2. The fish farming cage device according to claim 1, characterized in that: The box body includes multiple boxes with openings at both the top and bottom, and adjacent boxes are connected by a water-passing device; the top of the uppermost box is connected to the bottom of the floating frame by a clamp.

3. The fish farming cage device according to claim 2, characterized in that: The water passage device includes multiple nylon mesh water passage windows, which are arranged around the side of the box body and located between two adjacent boxes, and are fixedly connected to the adjacent boxes.

4. The fish farming net cage device according to claim 2, characterized in that: Both the flexible retaining wall and the box body are made of PVC knife-coated cloth.

5. The fish farming cage device according to claim 3, characterized in that: The metal connector includes an iron clamp and a drain pipe clamp. The iron clamp is located at the bottom of the conical drain cover and has a through hole coaxial with the drain outlet. The inner diameter of the through hole is not less than the inner diameter of the drain outlet. The drain pipe clamp is fixedly sleeved on the upper outer wall of the L-shaped drain pipe. After the top of the L-shaped drain pipe passes through the drain outlet, the iron clamp and the drain pipe clamp are fixedly connected by bolts.

6. A fish farming cage system, characterized in that: Includes multiple fish farming cage devices as described in any one of claims 1 to 5; The sewage discharge module of the fish farming cage device is connected to a sewage discharge branch pipe. The sewage discharge branch pipe is equipped with a solenoid valve, and the solenoid valve is connected to a control device. The end of the sewage discharge branch pipe is connected to a main sewage discharge pipe, and the main sewage discharge pipe is connected to the solid-liquid separation device through a sewage pump.

7. A method for operating the fish farming cage system as described in claim 6, characterized in that: Includes the following steps: Step 1: Suspend the assembled box body and sewage discharge module at the bottom of the floating frame; Step two: Insert the positioning rod into the housing and connect it to the L-shaped drain port via the threaded rod. Step 3: Pass the circular hole of the inner liner fishing box through the top of the positioning rod, then place the inner liner fishing box inside the box body, and use the push rod to push the magnetic pressure strip washer downward to make it adsorb and connect with the iron clamp plate. Step 4: Rotate the positioning rod in the opposite direction to disengage the threaded rod from the L-shaped drain port, then remove the positioning rod. Step 5: Fish farming operations are carried out inside the inner liner fishing box. When inspecting or catching fish, the positioning rod is reinserted and the fishing rope is pulled upwards to make the inner liner fishing box move up along the positioning rod to the set height. When discharging waste, the solenoid valve and waste pump are opened, and the uneaten food and waste will be sucked into the main waste pipe through the waste discharge branch pipe, and then lifted to the solid-liquid separation device on the shore by the waste discharge pump. After solid-liquid separation, the fish waste can be utilized as a resource.

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