A self-floating gravity-driven positioning pile and a stake-type aquaculture cage

Abstract

This invention relates to a self-buoyant gravity-driven positioning pile and a stake-type aquaculture cage, comprising a pile body, a pile tip fixed at the bottom end of the pile body, a pile lifting eye plate fixed at the top end of the pile body, and three watertight baffles arranged vertically within the pile body. This self-buoyant gravity-driven positioning pile and stake-type aquaculture cage features a simple and low-cost pile construction. It utilizes the cage's own buoyancy to achieve autonomous pile driving and lifting, which is significantly cheaper than traditional methods using lifting systems. Therefore, it greatly reduces the cost of the aquaculture cage. The cage is easy to operate, freely lifting and lowering using its own ballast system to assist in fish harvesting, maintenance, adapting to tidal changes, and providing full-submersion typhoon resistance. Through the balance between its own buoyancy and gravity, and with the adjustment of the float's weight and the ballast system, it achieves pile driving, lifting, and float raising / lowering operations, greatly reducing construction and operating costs.

Description

Technical Field

[0001] This invention relates to the technical field of self-floating gravity-pressed positioning piles and insert-type aquaculture cages, specifically to a self-floating gravity-pressed positioning pile and insert-type aquaculture cage. Background Technology

[0002] Cage aquaculture is an aquaculture technique, also known as floating cage aquaculture. It involves setting up cages in water bodies such as lakes, reservoirs, rivers, and seas, and then feeding the cages artificially. Because the water bodies have certain waves, the cages are easily moved by the waves. Usually, floating positioning stakes are set up to fix the aquaculture cages in place.

[0003] Currently, most existing floating body positioning piles are large-diameter steel pipe piles with open bottoms. Their disadvantages are: the positioning piles are generally long and heavy, requiring auxiliary vessels to transport them to the installation site, and offshore piling operations to be carried out using lifting equipment and piling vessels. For floating bodies that need to be moved frequently, the removal of the driven positioning piles is very troublesome. In general, the piles must be cut off first. In order to adapt to the needs of platform movement and the heavy use of the piles, special equipment must be used for the pile removal operation, resulting in high construction costs and poor economic efficiency.

[0004] In addition, existing stilt-lift marine aquaculture cages utilize a traditional gear and rack drive lifting system, allowing the main structure to move freely up and down along the stilt legs on and under the water surface, achieving functions such as aquaculture at specific water layers and typhoon protection. However, the transportation and installation of the cages require the use of specialized modular auxiliary towing platforms, which need to be connected to the cages via special devices and formed as a whole during towing. Once the cages reach the designated sea area, the stilt legs are inserted to the appropriate depth. The cage installation process requires specialized auxiliary installation equipment. After the towing platform for positioning the cages is completed, it is removed. If the cages need to be moved, the auxiliary towing platform must be reinstalled, the stilt legs pulled out, and the movement can be carried out, which is extremely inconvenient.

[0005] In view of this, this application proposes a self-floating gravity-pressed positioning pile and a stake-inserted aquaculture cage to solve the above problems. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a self-floating gravity-driven positioning pile and a pile-inserted aquaculture cage, which has the advantages of conveniently realizing pile insertion and positioning operations, reducing reliance on external auxiliary equipment and facilities, improving operational efficiency and reducing operating costs. It solves the problems of existing technologies that rely too much on external auxiliary equipment, are cumbersome to operate, have high costs, and low economic benefits.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a self-buoyant gravity-driven positioning pile, comprising a pile body, a pile tip fixed at the bottom end of the pile body, a pile lifting eye plate fixed at the top end of the pile body, three watertight baffles arranged vertically within the pile body, a second ballast chamber provided on the top surface of the top watertight baffle, a gravity-flow water inlet chamber provided between the top watertight baffle and the middle watertight baffle, and a buoyancy balance chamber provided between the middle watertight baffle and the bottom watertight baffle. The outer peripheral wall of the pile body is provided with a water inlet hole communicating with the gravity-flow water inlet chamber, a vent hole communicating with the gravity-flow water inlet chamber, a pile lifting bearing pin hole, a second pile pulling bearing pin hole, a pile driving bearing pin hole, and a first pile pulling bearing pin hole. A ballast water pipeline connecting the buoyancy balance chamber and the second ballast chamber is fixed on the inner peripheral wall of the pile body.

[0008] Furthermore, the pile tip is a truncated conical steel structure with a hollow interior, a missing top, and a closed bottom. The watertight baffle at the bottom is set on the top surface of the pile tip to separate the buoyancy balance chamber from the pile tip.

[0009] Furthermore, the pile body is composed of multiple pipe segments distributed vertically and spliced ​​together.

[0010] Furthermore, the water inlet is located near the top surface of the middle watertight partition, and the vent is located near the bottom surface of the top watertight partition.

[0011] Furthermore, the first pile extraction bearing pin hole, the pile driving bearing pin hole, the second pile extraction bearing pin hole, and the pile lifting bearing pin hole are arranged sequentially from top to bottom, with the top watertight partition located between the second pile extraction bearing pin hole and the pile lifting bearing pin hole, and the pile lifting bearing pin hole located above the middle watertight partition.

[0012] A stake-type aquaculture cage includes two floating boxes. Multiple uprights are fixed to the top surface of each floating box. Two horizontally distributed tubular support rods are fixed between adjacent left and right uprights and between opposite front and rear uprights. Two vertical support rods are fixed to the top and bottom surfaces of the top horizontal tubular support rods. Multiple first ballast tanks and multiple pump chambers are provided inside each floating box. A cage is fixed between the uprights. Netting support rods are fixed around the perimeter of each cage. A bottom net is fixed to the bottom surface of the cage. The outer surface of the cage... Side nets are fixed to the perimeter wall, and a top net is fixed to the top surface of the cage. Tensioning ropes are installed inside the top net, side nets, and bottom net. Five horizontal plate frame supports are provided on the top surface of the cage. The top of the column and the top of the vertical support are fixed to the bottom surface of the horizontal plate frame supports. Upper sleeves are fixed to the left and right ends of the front and rear horizontal plate frame supports. Lower sleeves are fixed to the left and right ends of the pontoon. The pile is inserted into the lower sleeve and vertically penetrates the upper sleeve. Centering limit devices are provided at the left and right ends of the front and rear horizontal plate frame supports.

[0013] Furthermore, a feed tank and a feeding system are provided on the middle horizontal tubular support rod, a signal light is fixed on the middle horizontal tubular support rod, a life raft is fixed on the horizontal plate frame support rod, and a fender is fixed on the horizontal plate frame support rod.

[0014] Furthermore, the cage is a rectangular cage, and of the five horizontal support rods, three are short rods and two are long rods. The two long rods are distributed front to back, and the three short rods are located between the two long rods and distributed left to right.

[0015] Furthermore, the fixation between the life raft and the horizontal support frame is detachable.

[0016] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0017] 1. This self-floating gravity-driven positioning pile and insertable aquaculture cage features simple and low-cost pile manufacturing. It utilizes the cage's own buoyancy to autonomously drive and pull the piles, significantly reducing costs compared to traditional methods using lifting systems. The cage is easy to operate, freely lifting and lowering itself via its ballast system to assist in fish harvesting, maintenance, adapting to tidal changes, and providing full-submersion typhoon resistance. By balancing its own buoyancy and gravity, and leveraging the weight of the float and the ballast system, it achieves pile insertion, removal, and float lifting operations, greatly reducing construction and operating costs.

[0018] 2. This self-floating gravity-driven positioning pile and insert-type aquaculture cage serves to limit and prevent slippage when the cage is bottom-mounted for aquaculture. When the cage is semi-submersible, it can adapt to changes in tidal range through buoyancy balance. It can also achieve full submersion to resist typhoons by adjusting the cage ballast. When the cage is fully submersible, the depth can be fixed by adjusting the cage ballast. The horizontal plate frame support structure is simple, easy to manufacture and process, and does not require additional design of walkways, handrails and other outfitting components, making the arrangement easier. It can effectively reduce the weight of the upper structure and outfitting components, lower the center of gravity of the cage, make the cage more stable in floating state, and reduce the impact force on the piles. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a side view of the cage of the present invention;

[0021] Figure 3 This is a top view of the cage of the present invention;

[0022] Figure 4 This is a top view schematic diagram of the horizontal tubular strut of the present invention;

[0023] Figure 5 This is a side view schematic diagram of the side mesh of the present invention.

[0024] In the diagram: 1. Pile body, 2. Horizontal plate support rod, 3. Upper sleeve, 4. Lower sleeve, 5. Float box, 6. Column, 7. Vertical support rod, 8. Horizontal tubular support rod, 9. First ballast tank, 10. Pump room, 11. Top net, 12. Side net, 13. Bottom net, 14. Feed tank and feeding system, 15. Net support rod, 16. Signal light, 17. Life raft, 18. Fender, 19. Cable, 20. Lifting pile bearing pin hole, 21. Driving pile bearing pin hole, 22. First extraction pile bearing pin hole, 23. Centering limit device, 24. Second extraction pile bearing pin hole, 25. Pile tip, 26. Watertight bulkhead, 27. Buoyancy balance tank, 28. Gravity inlet tank, 29. Inlet hole, 30. Ventilation hole, 31. Second ballast tank, 32. Ballast water regulating pipeline, 33. Pile lifting eye plate. Detailed Implementation

[0025] 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.

[0026] Please see Figure 1This embodiment of a self-buoyant gravity-driven positioning pile includes a pile body 1, a pile tip 25 fixed at the bottom end of the pile body 1, a pile lifting eye plate 33 fixed at the top end of the pile body 1, three watertight baffles 26 arranged vertically inside the pile body 1, a second ballast chamber 31 provided on the top surface of the top watertight baffle 26, a gravity-flow water inlet chamber 28 provided between the top watertight baffle 26 and the middle watertight baffle 26, and a buoyancy balance chamber 27 provided between the middle watertight baffle 26 and the bottom watertight baffle 26. The outer peripheral wall of the pile body 1 is opened... The pile body 1 is provided with an inlet hole 29 that communicates with the gravity-flow inlet chamber 28, a vent hole 30 that communicates with the gravity-flow inlet chamber 28 on the outer peripheral wall of the pile body 1, a lifting pile bearing pin hole 20 on the outer peripheral wall of the pile body 1, a second pulling pile bearing pin hole 24 on the outer peripheral wall of the pile body 1, a pressing pile bearing pin hole 21 on the outer peripheral wall of the pile body 1, a first pulling pile bearing pin hole 22 on the outer peripheral wall of the pile body 1, and a ballast water pipeline 32 that connects the buoyancy balance chamber 27 and the second ballast chamber 31 is fixed on the inner peripheral wall of the pile body 1.

[0027] During transportation, before the floating platform is moved and positioned for installation, a crane is used at the dock to vertically lift the pile 1 into a pair of concentric insertion holes on the floating platform using the lifting eye plate 33 of the pile. The height of the pile is adjusted until the lifting bearing pin hole 20 is in the operating position on the bearing pin seat on the upper part of the floating platform. The bearing pin is inserted into the lifting bearing pin hole 20 on the pile wall, and then the hook is slowly released. The weight of the pile 1 is completely borne by the bearing pin and the bearing pin seat. Before the pile 1 is transported, the lower locking position fastening installation work on the floating platform is completed.

[0028] In this embodiment, the pile tip 25 is a truncated conical steel structure with a hollow interior, missing top, and closed bottom. The bottom watertight baffle 26 is set on the top surface of the pile tip 25 to separate the buoyancy balance chamber 27 and the pile tip 25. The pile body 1 is composed of multiple pipe segments distributed vertically and spliced ​​together. The water inlet 29 is close to the top surface of the middle watertight baffle 26, and the vent 30 is close to the bottom surface of the top watertight baffle 26. The first pile pulling bearing pin hole 22, the pile driving bearing pin hole 21, the second pile pulling bearing pin hole 24, and the pile lifting bearing pin hole 20 are arranged sequentially from top to bottom. The top watertight baffle 26 is located between the second pile pulling bearing pin hole 24 and the pile lifting bearing pin hole 20, and the pile lifting bearing pin hole 20 is located above the middle watertight baffle 26.

[0029] The pile body 1 is simple and low in cost to manufacture, and it can achieve autonomous pile pressing and pulling by utilizing the buoyancy of the net cage itself. Its cost is lower than the traditional pile pressing and pulling process using a lifting system. Therefore, it can greatly reduce the cost of aquaculture net cages. The net cage is easy to operate and can be raised and lowered freely by utilizing its own ballast system to achieve multiple functions such as assisting in fish harvesting, assisting in maintenance, adapting to changes in tidal range, and resisting typhoons. Through the balance between its own buoyancy and gravity, as well as the adjustment effect of the weight of the float and the ballast system, the pile insertion, pulling and floating body lifting operations can be achieved, greatly reducing construction and operation costs.

[0030] Please see Figure 1-5A type of stake-type aquaculture cage includes two pontoons 5. Multiple uprights 6 are fixed to the top surface of each pontoon 5. Two horizontally distributed tubular support rods 8 are fixed between adjacent left and right uprights 6 and between two opposing front and rear uprights 6. Two vertical support rods 7 are fixed to the top and bottom surfaces of the top horizontal tubular support rods 8. Multiple first ballast chambers 9 are provided inside each pontoon 5. When the stake is pulled out, ballast water is injected into the first ballast chambers 9, and the cage submerges to the draft for stake extraction. A bearing pin is inserted into the first stake extraction bearing pin hole 22, discharging some ballast water from the stake body 1 and the first ballast chambers 9. Once the predetermined stake extraction force is reached, the discharge of ballast water stops, and the stake body 1 moves upward with the cage, pulling out the bearing pin from the first stake extraction bearing pin hole 22. The first ballast chambers 9 are then filled with... Ballast water is added, and the gabion sinks to the second extraction draft. The pin is inserted into the second extraction pile bearing pin hole 24, draining the ballast water from the first ballast tank 9. The pile 1 moves upward with the gabion until the silt is completely removed. Some of the ballast water in the pile 1 is slowly drained until the bearing pin is easily removed. After removing the bearing pin, the ballast water in the pile 1 continues to be slowly drained, and the pile 1 continues to float until the lifting pile bearing pin hole 20 is aligned with the main deck pin seat of the float. The bearing pin is then inserted into the lifting pile bearing pin hole 20, and the ballast water in the first ballast tank 9 is drained again. The gabion rises to the migration draft. Multiple pump rooms 10 are installed inside the float 5. The gabion is fixed between the columns 6. Netting support rods 15 are fixed around the gabion. A bottom net 13 is fixed to the bottom surface of the gabion, and side nets 12 are fixed to the outer perimeter wall of the gabion. The top surface of the gabion is fixed with a top net 11. Tensioning ropes 19 are installed inside the top net 11, side nets 12, and bottom net 13. It should be noted that the gabion consists of a top net 11, side nets 12, and a bottom net 13. The side net 12 is a ring net. The outer walls of the top net 11 and bottom net 13 are fixed to the inner walls of the side net 12. The top net 11, side nets 12, and bottom net 13 are supported and fixed together by hanging support rods 15, forming a rectangular gabion. The top surface of the gabion has five horizontal plate support rods 2. The top of the column 6 and the top of the vertical support rod 7 are fixed to the bottom surface of the horizontal plate support rods 2. Upper sleeves 3 are fixed to the left and right ends of the front and rear horizontal plate support rods 2, and lower sleeves 4 are fixed to the left and right ends of the pontoon 5. The pile 1 is inserted into the lower sleeve. The cylinder 4 penetrates vertically through the upper sleeve 3. Both ends of the front and rear horizontal support rods 2 are equipped with centering limiting devices 23. During pile insertion, all four pile bodies 1 must be operated simultaneously. After the net cage is towed to the aquaculture area, water is pumped into the first ballast tank 9 using the ballast pump in the pump room 10, causing the net cage to submerge. Once the pile body 1 reaches its draft, its buoyancy equals its weight. The centering limiting devices 23 on the horizontal support rod platform and the buoy 5 adjust the pile body 1 to be vertical. The bearing pin in the lifting pile bearing pin hole 20 is pulled out, and the pile body 1 detaches from the net cage. After ballast water is injected into the pile body 1, it sinks and penetrates to a certain depth into the seabed. The net cage discharges the ballast water, rises to the draft of the pile body 1, inserts the bearing pin in the pile bearing pin hole 21, and injects ballast water into the first ballast tank 9.At this point, the net cage uses its own gravity to reach the predetermined mud insertion depth using the pile body 1, restoring the centering limit device 23 to its initial position. Ballast water in the first ballast chamber 9 is discharged, the net cage floats, and the bearing pin in the pile bearing pin hole 21 is pulled out. The net cage is then adjusted to the aquaculture water level, completing the pile insertion process. At this point, the net cage can move up and down along the pile body 1 to adapt to tidal changes.

[0031] It should be noted that the centering limit device 23 is mainly composed of several sets of cylinders or electric push rods. Multiple cylinders are equidistantly distributed along the circumference of the pile body 1. Limit blocks are set at the output end of the cylinders. When multiple cylinders extend at the same time, the centering limit effect can be achieved.

[0032] In this embodiment, a feed tank and feeding system 14 are provided on the middle horizontal tubular support rod 8, a signal light 16 is fixed on the middle horizontal tubular support rod 8, a life raft 17 is fixed on the horizontal plate support rod 2, and a fender 18 is fixed on the horizontal plate support rod 2. During aquaculture, the auxiliary vessel moors to the fender 18 of the net cage and sends feed into the feed tank and feeding system 14 through the receiving stations on both sides. The feed tank and feeding system 14 are used to achieve gravity-driven autonomous feeding by utilizing the height difference between the feed tank and feeding system 14 and the water surface. When fish harvesting or net cage maintenance is required, the ballast water in the float box 5 can be discharged to make the net cage float to the draft required for fish harvesting or maintenance, thereby realizing fish harvesting or maintenance of the net cage body and netting.

[0033] The cage is a rectangular box with five horizontal support rods, three of which are short rods and two are long rods. The two long rods are distributed front to back, and the three short rods are located between the two long rods and distributed left to right.

[0034] The life raft 17 is fixed to the horizontal support rod 2 in a detachable manner.

[0035] The working principle of the above embodiments is as follows:

[0036] (1) During transportation, before the floating platform is moved and positioned for installation, the crane at the dock uses the lifting eye plate 33 of the pile to vertically lift the pile 1 into a pair of concentric pile holes on the floating platform. The height of the pile is adjusted until the lifting bearing pin hole 20 is in the operating position on the bearing pin seat at the top of the floating platform. The bearing pin is inserted into the lifting bearing pin hole 20 on the pile wall, and then the hook is slowly released. The weight of the pile 1 is completely borne by the bearing pin and the bearing pin seat. Before the pile 1 is transported, the lower locking position fastening installation work on the floating platform is completed.

[0037] (2) During the installation of the piles, four piles 1 need to be installed simultaneously. After the net cage is towed to the aquaculture area, the ballast pump in the pump room 10 pumps water into the first ballast tank 9 to submerge the net cage. After the net cage submerges to the draft of the lower pile 1, the buoyancy of the pile 1 equals its weight. The centering limit device 23 on the horizontal support platform and the floating box 5 adjusts the pile 1 to be vertical. The bearing pin in the lifting pile bearing pin hole 20 is pulled out, and the pile 1 is detached from the net cage. After ballast water is injected into the pile 1, it sinks and penetrates the seabed to a certain depth. The net cage drains the ballast water and floats to the water level of the pile body 1. The bearing pin is inserted into the bearing pin hole 21 of the pile, and ballast water is injected into the first ballast chamber 9. At this time, the net cage uses its own weight to reach the predetermined mud depth of the pile body 1, and the centering limit device 23 is restored to the initial position. The ballast water in the first ballast chamber 9 is discharged, the net cage floats up, the bearing pin in the bearing pin hole 21 of the pile is pulled out, and the net cage is adjusted to the water level of the aquaculture. The net cage completes the pile insertion process. At this time, the net cage can move up and down along the pile body 1 to adapt to tidal changes.

[0038] (3) During aquaculture, the auxiliary vessel moors to the fender 18 of the net cage and sends feed into the feed tank and feeding system 14 through the receiving stations on both sides. The feed tank and feeding system 14 are used to achieve gravity-driven feeding by utilizing the height difference between the feed tank and feeding system 14 and the water surface. When the auxiliary vessel needs to collect fish or the net cage needs maintenance, the ballast water in the float box 5 can be discharged to make the net cage float to the draft required for fish collection or maintenance, thereby realizing fish collection or maintenance of the net cage body and netting.

[0039] (4) During pile extraction, ballast water is injected into the first ballast chamber 9, the net cage submerges to the extraction draft, the bearing pin is inserted into the first extraction bearing pin hole 22, a portion of the ballast water in the pile body 1 is discharged, and the ballast water in the first ballast chamber 9 is discharged. After the predetermined extraction force is reached, the discharge of ballast water is stopped, the pile body 1 moves upward with the net cage, the bearing pin in the first extraction bearing pin hole 22 is pulled out, ballast water is injected into the first ballast chamber 9, the net cage sinks to the second extraction draft, and the pin is inserted into the second extraction pile. Through the bearing pin hole 24, the ballast water in the first ballast tank 9 is discharged, and the pile body 1 moves upward with the net cage until the silt is completely removed. Some of the ballast water in the pile body 1 is slowly discharged until the bearing pin is easy to pull out. After the bearing pin is pulled out, the ballast water in the pile body 1 continues to be slowly discharged, and the pile body 1 continues to float until the lifting pile bearing pin hole 20 is aligned with the main deck pin seat of the float. The bearing pin in the lifting pile bearing pin hole 20 is inserted, and the ballast water in the first ballast tank 9 is discharged. The net cage rises to the migration draft.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for using a stake-type aquaculture cage, wherein the stake-type aquaculture cage comprises two floating boxes (5), characterized in that: The top surface of the pontoon (5) is fixed with multiple columns (6). Between two adjacent columns (6) on the left and right sides and between two columns (6) facing each other front and back, there are two horizontal tubular support rods (8) distributed vertically. The top and bottom surfaces of the top horizontal tubular support rods (8) are fixed with two vertical support rods (7). The pontoon (5) is equipped with multiple first ballast tanks (9). The pontoon (5) is equipped with multiple pump rooms (10). A net box is fixed between the columns (6). Net support rods (15) are fixed around the net box. A bottom net (13) is fixed on the bottom surface of the net box. A side net (12) is fixed on the outer perimeter wall of the net box. A top net (11) is fixed on the top surface of the net box. The top net (11) and the side net (12) are fixed on the outer perimeter wall of the net box. The net (12) and the bottom net (13) are both equipped with tensioning ropes (19). The top surface of the net box is provided with five horizontal plate support rods (2). The top of the column (6) and the top of the vertical support rod (7) are fixed to the bottom surface of the horizontal plate support rods (2). The left and right ends of the front and rear horizontal plate support rods (2) are fixed with upper sleeves (3). The left and right ends of the float (5) are fixed with lower sleeves (4). The pile body (1) of the positioning pile is inserted into the lower sleeve (4) and vertically penetrates the upper sleeve (3). The left and right ends of the front and rear horizontal plate support rods (2) are provided with centering limit devices (23). The bottom end of the pile body (1) is fixed with a pile tip (25). The top end of the pile body (1) is fixed with a pile lifting eye plate (25). 33), three watertight baffles (26) are fixed inside the pile body (1) and arranged vertically. The top surface of the top watertight baffle (26) is provided with a second ballast chamber (31). A gravity-flow water inlet chamber (28) is provided between the top watertight baffle (26) and the middle watertight baffle (26). A buoyancy balance chamber (27) is provided between the middle watertight baffle (26) and the bottom watertight baffle (26). A water inlet hole (29) communicating with the gravity-flow water inlet chamber (28) is opened on the outer peripheral wall of the pile body (1). A vent hole (30) communicating with the gravity-flow water inlet chamber (28) is opened on the outer peripheral wall of the pile body (1). A pile lifting bearing pin hole (20) is opened on the outer peripheral wall of the pile body (1). A second pile-pulling bearing pin hole (24) is provided, a pile-driving bearing pin hole (21) is provided on the outer peripheral wall of the pile body (1), a first pile-pulling bearing pin hole (22) is provided on the outer peripheral wall of the pile body (1), and a ballast water pipeline (32) connecting the buoyancy balance chamber (27) and the second ballast chamber (31) is fixed on the inner peripheral wall of the pile body (1). The first pile-pulling bearing pin hole (22), the pile-driving bearing pin hole (21), the second pile-pulling bearing pin hole (24), and the pile-lifting bearing pin hole (20) are arranged sequentially from top to bottom. The top watertight partition (26) is located between the second pile-pulling bearing pin hole (24) and the pile-lifting bearing pin hole (20), and the pile-lifting bearing pin hole (20) is located above the middle watertight partition (26). The method of use includes: When inserting the pile, pull out the bearing pin in the pile bearing pin hole (20), the pile body (1) is separated from the net cage, ballast water is injected into the pile body (1) and it sinks and penetrates into the seabed to a certain depth. The net cage discharges the ballast water and floats up to the draft of the pile body (1). Insert the bearing pin in the pile bearing pin hole (21) and inject ballast water into the first ballast chamber (9). At this time, the net cage uses its own weight to make the pile body (1) sink to the predetermined mud penetration depth. Return the centering limit device (23) to the initial position, discharge the ballast water in the first ballast chamber (9), float up, pull out the bearing pin in the pile bearing pin hole (21), adjust the net cage to the aquaculture draft, and the net cage completes the pile insertion process. When the pile is pulled out, ballast water is injected into the first ballast chamber (9), the net box sinks to the pile extraction draft, inserts the bearing pin in the first pile extraction bearing pin hole (22), discharges part of the ballast water in the pile body (1), discharges the ballast water in the first ballast chamber (9), and stops discharging the ballast water after the predetermined pile extraction force is reached. The pile body (1) moves up with the net box, the bearing pin in the first pile extraction bearing pin hole (22) is pulled out, ballast water is injected into the first ballast chamber (9), the net box sinks to the second pile extraction draft, the pin is inserted into the second pile extraction bearing pin hole (24), the ballast water in the first ballast chamber (9) is discharged, the pile body (1) moves up with the net box until the silt is completely pulled out.

2. The method of using a stake-type aquaculture cage according to claim 1, characterized in that: The shape of the pile tip (25) is a truncated conical steel structure with a hollow interior, missing top and closed bottom. The watertight partition (26) at the bottom is set on the top surface of the pile tip (25) to separate the buoyancy balance chamber (27) and the pile tip (25).

3. The method of using a stake-type aquaculture cage according to claim 1, characterized in that: The pile body (1) is composed of multiple pipe segments distributed vertically and spliced ​​together.

4. The method of using a stake-type aquaculture cage according to claim 1, characterized in that: The water inlet (29) is close to the top surface of the middle watertight partition (26), and the vent (30) is close to the bottom surface of the top watertight partition (26).

5. The method of using a stake-type aquaculture cage according to claim 1, characterized in that: The middle horizontal tubular support rod (8) is equipped with a feed tank and a feeding system (14). A signal light (16) is fixed on the middle horizontal tubular support rod (8). A life raft (17) is fixed on the horizontal plate support rod (2). A fender (18) is fixed on the horizontal plate support rod (2).

6. The method of using a stake-type aquaculture cage according to claim 1, characterized in that: The cage is a rectangular cage. Of the five horizontal support rods (2), three are short rods and two are long rods. The two long rods are distributed front to back and the three short rods are located between the two long rods and distributed left to right.

7. The method of using a stake-type aquaculture cage according to claim 5, characterized in that: The life raft (17) is fixed to the horizontal plate support rod (2) in a detachable manner.

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