Truss type aquaculture net cage fishing-suitable stagnation flow equipment

Abstract

The invention discloses a truss-type aquaculture net cage fishing-suitable stagnant flow device, and belongs to the technical field of mariculture net cages, the truss-type aquaculture net cage fishing-suitable stagnant flow device comprises two net cage main bodies, the number of the net cage main bodies is two, a first fixing rod is fixedly connected between the front ends of the two net cage main bodies, and a second fixing rod is fixedly connected between the rear ends of the two net cage main bodies; the two first fixing rods and the two second fixing rods are arranged in parallel, a front viscous flow assembly is fixed between the side walls of the two first fixing rods, a rear viscous flow assembly is fixed between the side walls of the two second fixing rods, the front viscous flow assembly and the rear viscous flow assembly are oppositely arranged in parallel, and an inclined viscous flow mechanism is connected between the front viscous flow assembly and the rear viscous flow assembly. The front stagnation flow assembly and the rear stagnation flow assembly are oppositely arranged in parallel, double-layer foundation stagnation flow of water flow is achieved, the two inclined stagnation flow mechanisms are connected between the front stagnation flow assembly and the rear stagnation flow assembly, vortex generation is promoted, and the water flow velocity is effectively reduced.

Description

Technical Field

[0001] This application relates to the field of marine aquaculture cage technology, and more specifically, to a truss-type aquaculture cage suitable for fishing and its current retention device. Background Technology

[0002] Truss-type aquaculture cages, with their advantages of structural stability, strong resistance to wind and waves, and large aquaculture space, have become core equipment for large-scale deep-sea and near-shore aquaculture. They are widely used in fish, shellfish, and other aquaculture fields, effectively resisting harsh marine environments and providing a stable growth space for farmed organisms. Flow stabilization devices, as key supporting components of truss-type aquaculture cages, primarily function to regulate the water flow velocity inside and outside the cage, stabilize the flow field within the cage, reduce water flow impact, and create a suitable water flow environment to meet the needs of different farmed species and different growth stages. They also reduce the stress response of fish caused by water flow impact, improving survival rates and growth quality. Furthermore, they help prevent some debris and impurities from entering the cage, improving the water quality within the cage.

[0003] Currently, the flow retention structure of truss-type net cages mainly involves fixing single or multiple layers of rigid flow retention netting at the inlet or inside. This utilizes the pore resistance of the netting to slow down the water flow and achieve a basic flow retention effect. However, this flow retention structure is a fixed structure, and the flow retention intensity cannot be flexibly adjusted according to changes in water flow velocity and aquaculture species. It also cannot meet the needs of strong flow retention at high flow velocities and weak flow retention at low flow velocities. Either the water flow resistance is too high, leading to stagnant water areas and water quality deterioration in the net cage, resulting in increased fish mortality, or the flow retention is insufficient, leading to unstable flow field in the net cage. The water flow impact can easily disturb the fish and damage the flow retention netting. The flow retention effect is singular and unstable.

[0004] In view of this, this application proposes a highly adaptable fishing device for stagnant water. Summary of the Invention

[0005] Technical problem to be solved: The purpose of this application is to provide a truss-type aquaculture cage suitable for fish stagnant water, which solves the technical problem mentioned in the background art above.

[0006] Technical Solution: This application provides a truss-type aquaculture cage suitable for fish-keeping flow retention device, including a cage body. Two cage bodies are mirror-arranged. A first fixed rod is fixedly connected between the front ends of the two cage bodies, and a second fixed rod is fixedly connected between the rear ends of the two cage bodies. Two first and second fixed rods are arranged in parallel. A front flow retention component is fixed between the side walls of the two first fixed rods, and a rear flow retention component is fixed between the side walls of the two second fixed rods. The front and rear flow retention components are arranged in parallel and opposite to each other. An inclined flow retention mechanism is connected between the front and rear flow retention components. Two sets of inclined flow retention mechanisms are mirror-arranged. A diversion plate for diverting water flow is fixed between the side walls of the two sets of inclined flow retention mechanisms. The oblique flow retention mechanism includes an electric drum fixedly connected to one side of the front flow retention component, a steering component slidably connected to one side of the rear flow retention component, and a take-up component fixedly connected to one side of the rear flow retention component. The rear flow retention component includes an electric screw disposed inside, on which two threaded sections are disposed in a mirror image. The electric screw is used to drive the steering component to slide. An oblique flow retention net is wound inside the electric drum. One side of the oblique flow retention net bypasses the inside of the steering component to achieve steering. Two reinforcing belts are connected to the side of the oblique flow retention net away from the electric drum. The reinforcing belts are wound inside the take-up component. Furthermore, the inclined flow net is configured with an inclined section and a horizontal section by a steering component. The horizontal section of the inclined flow net is arranged parallel to the rear flow assembly. The steering component is driven by an electric screw to slide on the rear flow assembly to synchronously adjust the length of the inclined section and the horizontal section, so that the inclined flow net can be set in two states. In the first state, the steering component is attached to the tape take-up component on one side, and the length of the inclined section of the inclined flow net is greater than the length of the horizontal section. The inclined section of the inclined flow net is used for strong flow retention between the front flow retention component and the rear flow retention component. In the second state, the steering component slides away from the take-up component to reduce the length of the inclined section of the inclined flow net and increase the length of the horizontal section. The inclined section of the inclined flow net is used for weak flow stabilization between the front flow stabilization component and the rear flow stabilization component, and the horizontal section of the inclined flow net is used for flow stabilization buffering between the front flow stabilization component and the rear flow stabilization component.

[0007] Furthermore, the inclined flow net is configured with a third state through electric drum winding and synchronous unwinding by the winding assembly; In the third state, the electric drum winds up the inclined flow-retaining net so that the inclined flow-retaining net is separated between the electric drum and the steering assembly, and the take-up assembly unwinds the reinforcing belt so that the reinforcing belt is placed between the take-up assembly and the steering assembly, so that the front flow-retaining assembly and the rear flow-retaining assembly are connected.

[0008] Furthermore, the angle between the inclined section and the horizontal section of the inclined flow network is adjusted by the translation of the steering component, and the angle is 90°-120°.

[0009] Furthermore, the rear flow retention assembly also includes two first fixed boxes respectively fixed to the side walls of the two second fixed rods, a rear flow retention mesh fixed between the two first fixed boxes, an electric lead screw disposed inside the top first fixed box, a steering assembly slidably connected to the inside of the first fixed box on one side, and a steering assembly threadedly sleeved to the outer wall of the electric lead screw on the other side. Slide rails are fixed to the side walls of both first fixed boxes, and the steering assembly is slidably connected to the two slide rails.

[0010] Furthermore, the steering assembly includes two third sliders that are slidably connected to two slide rails respectively. A fixing block is fixed on one side of the third slider, and two positioning rods are rotatably connected between the two fixing blocks. An inclined flow-retardant mesh is fitted between the side walls of the two positioning rods. A push block is fixed on the other side of the top third slider. The push block is slidably connected to the inside of the first fixing box. The push block is threaded onto the outer wall of the screw. A mesh brush is fixed between the side walls of the two third sliders, and one side of the mesh brush is fitted with the rear flow-retardant mesh.

[0011] Furthermore, the tape take-up assembly includes a second fixed box that spans the side walls of the two first fixed boxes. A motor is provided on the top surface of the second fixed box, and a rotating shaft is connected to the rotating end of the motor. The rotating shaft is rotatably connected inside the second fixed box, and two tape reeling drums are sleeved on the outer wall of the rotating shaft. Reinforcing tape is wound inside the tape reeling drums.

[0012] Furthermore, the take-up assembly also includes a rolling bearing connected to the end of the tape drum. The inner ring of the rolling bearing is fixed to the end of the tape drum. Four retaining rings are fixed to the outer wall of the shaft. A limit block is fixed between two retaining rings. The tape drum is disposed between two retaining rings and is slidably sleeved on the outer wall of the limit block. A second spring is connected between the end of the inner ring of the rolling bearing and the retaining rings to allow the tape drum to slide elastically along the axial direction on the outer wall of the shaft.

[0013] Furthermore, the tape take-up assembly also includes two sets of stop components disposed inside the second fixed box. One side of the stop component is connected through to the outer wall of the second fixed box. The stop component is used to fit against and stop the bottom of the outer ring of the rolling bearing. The stop component is pushed to move inside the second fixed box by the third slider so as to separate the stop component from the rolling bearing. The stop component includes a stop block for fitting against the bottom end of the outer ring of the stop rolling bearing. The stop block has an arc-shaped structure. A first slider is fixed to one end of the stop block, and a second slider is fixed to the other end of the stop block. A push rod is connected to the side wall of the first slider. One end of the push rod is connected through to the outer wall of the second fixed box. The push rod and the third slider are located on the same horizontal center line. A first spring is sleeved on the outer wall of the push rod. The first spring is connected between the side wall of the first slider and the inner wall of the second fixed box. A sliding rod is inserted into the second slider and fixed inside the second fixed box.

[0014] Furthermore, the pre-retention assembly includes two fixing plates respectively fixed to the side walls of two first fixing rods, a pre-retention mesh fixed between the two fixing plates, two screws rotatably connected to one side of the fixing plates, a positioning plate threaded between the outer walls of the two screws, and an electric drum fixed across the side walls of the two positioning plates.

[0015] Beneficial effects: One or more technical solutions provided in this application have at least the following technical effects or advantages: 1. By arranging the front and rear flow retention components in parallel, a double-layer foundation flow retention is achieved. Two sets of inclined flow retention mechanisms are connected between the front and rear flow retention components to promote the generation of vortices, effectively reducing the flow velocity. Combined with the flow divider plate, the flow is evenly distributed to avoid excessively high local flow velocities and improve the flow retention effect.

[0016] 2. By driving the steering assembly to slide via an electric screw, the stagnant angle of the stagnant net can be adjusted, enabling stepless adjustment of strong and weak stagnant effects. This adapts to the water flow requirements of different fish species, improving the survival rate and growth rate of aquaculture.

[0017] 3. When adjusting the inclination angle of the inclined section of the stagnant flow net, simultaneously adjust the length of the inclined and horizontal sections of the stagnant flow net. Utilize the horizontal section of the stagnant flow net as a buffer to prevent the water flow from directly impacting the stagnant flow components, thereby reducing stimulation to the fish and improving the safety of the net structure.

[0018] 4. The reinforcing strip of the inclined current-retarding net is wound inside the take-up assembly to ensure that the net remains taut during the current-retarding process. The taut net also ensures that it maintains the preset facing area and tilt angle during current-retarding, thus ensuring a stable and controllable current-retarding effect and guaranteeing the current-retarding effect of this aquaculture net cage against the impact of seawater during marine aquaculture.

[0019] 5. By setting the third state, the front and rear flow retention components are fully connected, eliminating the flow retention effect of the inclined flow retention net and realizing free exchange of water flow inside and outside the net cage. This adapts to various working conditions such as fish fry release and adult fish harvesting, improving the equipment's multifunctionality and ease of operation.

[0020] 6. The push block is threaded onto the electric lead screw, which drives the third slider to slide along the slide rail to achieve overall translation. The two positioning rods are rotatably connected between the fixed blocks, and the inclined flow retention net is attached between the two positioning rods to provide rolling steering support for the net body, reduce wear and ensure the net body is taut, and ensure stable flow retention effect.

[0021] 7. The brush is fixed between the two third sliders and fits in contact with the rear flow retention net. During the translation of the steering component, the brush simultaneously washes the rear flow retention net, achieving automatic cleaning without manual operation, reducing maintenance costs, and ensuring long-term stable flow retention effect.

[0022] 8. The reinforcing belt is connected to the inclined flow net. The winding and unwinding of the tape drum and the winding and unwinding of the electric drum are synchronized to achieve the flat stretching and winding of the inclined flow net. The unwinding and winding speed of the inclined flow net is controllable, which improves the adjustment accuracy of the inclined flow net.

[0023] 9. The take-up assembly is equipped with two sets of stop components, which are set inside the second fixed box and penetrate the outer wall. They can fit against the bottom of the outer ring of the rolling bearing to achieve axial locking of the take-up drum, so that the reinforcing belt pulls the inclined flow net to keep it open and positioned, so that the tension of the inclined flow net is stable, the flow retention effect is stable at low flow rates, and the flow field control accuracy is high.

[0024] 10. By rotating the screw, the positioning plate is moved horizontally, thereby adjusting the installation position of the electric drum and realizing flexible adjustment of the minimum tilt angle of the inclined flow net, further improving the adaptability of the equipment and meeting the personalized fishery suitability needs of different aquaculture species and different aquaculture stages. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the truss-type aquaculture cage suitable for fish stagnant water flow device of the present invention.

[0026] Figure 2 This is a schematic diagram of the overall rear structure of the present invention.

[0027] Figure 3 This is a schematic diagram of the connection structure between the oblique flow stabilization mechanism and the post-flow stabilization component of the present invention.

[0028] Figure 4 This is a schematic diagram of the connection structure between the steering component and the retractable belt component of the present invention.

[0029] Figure 5 This is a schematic diagram of the steering component structure of the present invention.

[0030] Figure 6 This is a schematic diagram of the connection structure between the pusher block and the electric lead screw of the present invention.

[0031] Figure 7 This is a schematic diagram of the internal structure of the tape receiving component of the present invention.

[0032] Figure 8 This is a schematic diagram of the connection structure between the reinforcing strip and the inclined flow net of the present invention.

[0033] Figure 9 This is a cross-sectional view of the connection structure between the tape reel and the shaft of the present invention.

[0034] Figure 10 This is a schematic diagram of the stop component structure of the present invention.

[0035] Figure 11 This is a schematic diagram of the front flow lag component structure of the present invention.

[0036] Figure 12 This is a schematic diagram of the overall structure of the present invention in the buffer state of the horizontal section of the inclined flow network.

[0037] Figure 13This is a schematic diagram of the overall structure of the present invention in the state where the front and rear flow retention networks are connected.

[0038] Explanation of the labels in the diagram: 100, main body of the cage; 200, first fixing rod; 300, second fixing rod; 400, front flow retention assembly; 410, fixing plate; 420, screw; 430, positioning plate; 440, front flow retention net; 500, rear flow retention assembly; 510, first fixing box; 511, electric lead screw; 520, slide rail; 530, rear flow retention net; 600, inclined flow retention mechanism; 610, electric drum; 620, inclined flow retention net; 621, reinforcing belt; 630, belt take-up assembly; 631, second fixing box. 632. Motor; 633. Shaft; 6331. Retaining ring; 6332. Limiting block; 634. Tape drum; 635. Stop component; 6351. Stop block; 6352. First slider; 6353. Push rod; 6354. First spring; 6355. Second slider; 6356. Slide rod; 636. Rolling bearing; 637. Second spring; 640. Steering assembly; 641. Push block; 642. Third slider; 643. Fixing block; 644. Positioning rod; 645. Mesh brush; 700. Diverter plate. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0041] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or a link; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0042] Reference Figures 1-13 This application provides a truss-type aquaculture cage suitable for fish flow retention device, including a cage body 100. Two cage bodies 100 are mirror-arranged. A first fixing rod 200 is fixedly connected between the front ends of the two cage bodies 100, and a second fixing rod 300 is fixedly connected between the rear ends of the two cage bodies 100. Two first fixing rods 200 and two second fixing rods 300 are arranged in parallel. A front flow retention component 400 is fixed between the side walls of the two first fixing rods 200, and a rear flow retention component 500 is fixed between the side walls of the two second fixing rods 300. The front flow retention component 400 and the rear flow retention component 500 are arranged in parallel and opposite to each other. An inclined flow retention mechanism 600 is connected between the front flow retention component 400 and the rear flow retention component 500. Two sets of inclined flow retention mechanisms 600 are mirror-arranged. A diversion plate 700 for diverting water flow is fixed between the side walls of the two sets of inclined flow retention mechanisms 600. The oblique flow stabilization mechanism 600 includes an electric drum 610 fixedly connected to one side of the front flow stabilization component 400, a steering component 640 slidably connected to one side of the rear flow stabilization component 500, and a take-up component 630 fixedly connected to one side of the rear flow stabilization component 500. The rear flow stabilization component 500 includes an electric lead screw 511 disposed inside, which has two threaded sections arranged in a mirror image. The electric lead screw 511 is used to drive the steering component 640 to slide. An oblique flow stabilization net 620 is wound inside the electric drum 610. One side of the oblique flow stabilization net 620 bypasses the interior of the steering component 640 to achieve steering. Two reinforcing belts 621 are connected to the side of the oblique flow stabilization net 620 away from the electric drum 610. The reinforcing belts 621 are wound inside the take-up component 630.

[0043] In this embodiment, the inclined flow stabilization net 620 is provided with an inclined section and a horizontal section by a steering component 640. The horizontal section of the inclined flow stabilization net 620 is arranged parallel to the rear flow stabilization component 500. The steering component 640 is driven by an electric lead screw 511 to slide on the rear flow stabilization component 500 to synchronously adjust the length of the inclined section and the horizontal section so that the inclined flow stabilization net 620 is provided with two states. In the first state, the steering component 640 is attached to the tape take-up component 630 on one side, and the length of the inclined section of the inclined flow net 620 is greater than the length of the horizontal section. The inclined section of the inclined flow net 620 is used for strong flow retention between the front flow retention component 400 and the rear flow retention component 500. In the second state, the steering component 640 slides away from the take-up component 630 to reduce the length of the inclined section of the inclined flow net 620 and increase the length of the horizontal section. The inclined section of the inclined flow net 620 is used for weak flow stabilization between the front flow stabilization component 400 and the rear flow stabilization component 500, and the horizontal section of the inclined flow stabilization net 620 is used for flow stabilization buffering between the front flow stabilization component 400 and the rear flow stabilization component 500.

[0044] By arranging the front flow retention component 400 and the rear flow retention component 500 in parallel and opposite directions, a double-layer basic flow retention is achieved for the water flow. Two sets of inclined flow retention mechanisms 600 are connected between the front flow retention component 400 and the rear flow retention component 500 to promote the generation of vortices, effectively reduce the water flow velocity, and combine with the flow divider plate 700 to achieve uniform flow distribution of the water flow, avoid excessive local flow velocity, and improve the flow retention effect. By driving the steering assembly 640 to slide via the electric lead screw 511, the stagnant angle of the stagnant net can be adjusted, which can achieve stepless adjustment of strong and weak stagnant effects, adapt to the water flow requirements of different fish species, and improve the survival rate and growth rate of aquaculture. When adjusting the inclination angle of the inclined section of the inclined flow retention net 620, the lengths of the inclined and horizontal sections of the inclined flow retention net 620 are adjusted simultaneously. The horizontal section of the inclined flow retention net 620 is used as a buffer to prevent the water flow from directly impacting the flow retention component 500, thereby reducing the stimulation to the fish and improving the safety of the net structure. The reinforcing strip 621 of the inclined flow-retarding net 620 is wound inside the take-up assembly 630 to ensure that the net remains taut during the flow retardation process. The taut net also ensures that it maintains the preset flow-facing area and angle during the flow retardation process, thus ensuring a stable and controllable flow retardation effect and guaranteeing the flow retardation effect of this aquaculture net cage against the impact of seawater during marine aquaculture.

[0045] In this embodiment, the inclined flow net 620 is configured in a third state by being wound up by an electric drum 610 and unwound synchronously by a take-up assembly 630. In the third state, the electric drum 610 winds up the inclined flow retention net 620 so that the inclined flow retention net 620 is separated between the electric drum 610 and the steering assembly 640, and the take-up assembly 630 unwinds the reinforcing belt 621 so that the reinforcing belt 621 is placed between the take-up assembly 630 and the steering assembly 640, so that the front flow retention assembly 400 and the rear flow retention assembly 500 are connected. By setting the third state, the front flow retention component 400 and the rear flow retention component 500 are fully connected, eliminating the flow retention effect of the inclined flow retention net 620 and enabling free exchange of water flow inside and outside the net cage. This adapts to various working conditions such as fish fry release and adult fish harvesting, improving the equipment's versatility and ease of operation. The free exchange of water flow inside and outside the net cage improves the water quality environment inside the net cage and reduces the occurrence of diseases. The synchronous winding and unwinding of the electric drum 610 and the winding component 630 ensures that the inclined flow retention net 620 remains flat during winding, without wrinkles or tangling, extending the service life of the net. Furthermore, it can quickly restore the flow retention function when unwound again without manual adjustment.

[0046] In this embodiment, the angle between the inclined and horizontal sections of the oblique flow retention net 620 is adjusted by the translation of the steering component 640, and the angle is 90°-120°. The steering component 640 translates along the rear flow retention component 500, which can simultaneously adjust the angle between the inclined and horizontal sections of the oblique flow retention net 620, realize flexible adjustment of the inclination angle, further refine the control precision of the flow retention effect, and better adapt to the fishing suitability requirements of different flow velocities and different fish species. The angle adjustment range is clearly defined as 90°-120°. This angle range ensures that the oblique flow retention net effectively blocks and guides the water flow, while avoiding the problems of insufficient flow retention due to excessive inclination angle and excessive water flow resistance due to excessive inclination angle. While ensuring the flow retention effect, it reduces the impact of the water flow on the oblique flow retention net 620 and extends the service life of the net. The angle adjustment is carried out simultaneously with the adjustment of the length of the inclined and horizontal sections to ensure the synergistic optimization of the flow retention effect and the buffering effect.

[0047] In this embodiment, the rear flow retention assembly 500 further includes two first fixing boxes 510 respectively fixed to the side walls of two second fixing rods 300, a rear flow retention net 530 fixed between the two first fixing boxes 510, an electric lead screw 511 disposed inside the top first fixing box 510, a steering assembly 640 slidably connected to the inside of the first fixing box 510 on one side, and a steering assembly 640 threadedly sleeved to the outer wall of the electric lead screw 511 on one side. Slide rails 520 are fixed to the side walls of both first fixing boxes 510, and the steering assembly 640 is slidably connected to the two slide rails 520. The electric lead screw 511 is installed inside the top first fixing box 510 to improve the protection and installation stability of the electric lead screw 511. The side walls of both first fixing boxes 510 are equipped with slide rails 520. The steering component 640 is threaded onto the outer wall of the electric lead screw 511 and slidably connected to the slide rail 520, providing dual guidance and positioning for the steering component 640. This ensures that there is no deviation or jamming during translation, achieving precise linear translation and making the tilt angle and length adjustment of the inclined flow net 620 more accurate.

[0048] In this embodiment, the steering assembly 640 includes two third sliders 642 that are slidably connected to two slide rails 520 respectively. A fixing block 643 is fixed on one side of the third slider 642. Two positioning rods 644 are rotatably connected between the two fixing blocks 643. The inclined flow-retardant net 620 is fitted between the side walls of the two positioning rods 644. A push block 641 is fixed on the other side of the top third slider 642. The push block 641 is slidably connected to the inside of the first fixing box 510. The push block 641 is threaded onto the outer wall of the screw 420. A mesh brush 645 is fixed between the side walls of the two third sliders 642. One side of the mesh brush 645 is fitted with the rear flow-retardant net 530. The push block 641 is threaded onto the electric lead screw 511, driving the third slider 642 to slide along the slide rail 520, achieving overall translation. The two positioning rods 644 are rotatably connected between the fixed blocks 643. The inclined flow retention net 620 is attached between the two positioning rods 644, providing rolling steering support for the net body, reducing wear and ensuring the net body is taut, thus ensuring stable flow retention effect. The brush 645 is fixed between the two third sliders 642 and is attached to the rear flow retention net 530. During the translation of the steering component 640, the brush 645 simultaneously brushes the rear flow retention net 530, achieving automatic cleaning without manual operation, reducing maintenance costs, and ensuring long-term stable flow retention effect. The push block 641 is fixedly connected to the third slider 642, realizing the integration of driving and sliding, simplifying the structure.

[0049] In this embodiment, the take-up assembly 630 includes a second fixed box 631 that spans the side walls of the two first fixed boxes 510. A motor 632 is provided on the top surface of the second fixed box 631. The rotating end of the motor 632 is connected to a rotating shaft 633. The rotating shaft 633 is rotatably connected to the inside of the second fixed box 631. Two tape reeling drums 634 are sleeved on the outer wall of the rotating shaft 633. A reinforcing tape 621 is wound inside the tape reeling drums 634. Motor 632 is mounted on the top surface of the second fixed box 631, driving the rotating shaft 633 to rotate and providing power for the winding of the reinforcing belt 621. Two winding drums 634 are sleeved on the outer wall of the rotating shaft 633, which wind the two reinforcing belts 621 respectively, achieving synchronous winding and unwinding. This ensures that the force on both sides of the inclined flow retention net 620 is uniform, preventing twisting and damage to the inclined flow retention net 620 and ensuring stable flow retention effect. The reinforcing belt 621 is connected to the inclined flow retention net 620. The winding and unwinding of the winding drum 634 is synchronized with the winding and unwinding of the electric drum 610, achieving flat stretching and winding of the inclined flow retention net 620. The unwinding and winding speed of the inclined flow retention net 620 is controllable, improving the adjustment accuracy of the inclined flow retention net 620.

[0050] In this embodiment, the take-up assembly 630 further includes a rolling bearing 636 connected to the end of the tape drum 634. The inner ring of the rolling bearing 636 is fixed to the end of the tape drum 634. Four retaining rings 6331 are fixed on the outer wall of the rotating shaft 633. A limiting block 6332 is fixed between two retaining rings 6331. The tape drum 634 is disposed between two retaining rings 6331. The tape drum 634 is slidably sleeved on the outer wall of the limiting block 6332. A second spring 637 is connected between the end of the inner ring of the rolling bearing 636 and the retaining rings 6331 so that the tape drum 634 can slide elastically along the axial direction on the outer wall of the rotating shaft 633. The tape reel 634 is sleeved on the outer wall of the rotating shaft 633 via a rolling bearing 636, and a second spring 637 is connected between its end and the retaining ring 6331, so that the tape reel 634 can slide elastically along the axial direction of the rotating shaft 633, effectively buffering the sudden change in tension caused by water flow fluctuations, effectively preventing the reinforcing belt 621 from breaking, and significantly reducing the breakage rate of the inclined flow net 620. Four retaining rings 6331 are provided on the outer wall of the rotating shaft 633. Two retaining rings 6331 form a group. The winding drum 634 is set between each group of retaining rings 6331 to achieve axial limiting and prevent winding deviation. A limiting block 6332 is set between the retaining rings 6331. The winding drum 634 is slidably sleeved on the outer wall of the limiting block 6332 to ensure the stability of the rotation and sliding of the winding drum 634. When the reinforcing belt 621 is subjected to a sudden change in tension, the tape drum 634 slides axially and compresses or stretches the second spring 637 to achieve tension buffering.

[0051] In this embodiment, the tape take-up assembly 630 further includes two sets of stop members 635 disposed inside the second fixing box 631. One side of the stop member 635 is connected through to the outer wall of the second fixing box 631. The stop member 635 is used to fit and stop against the bottom of the outer ring of the rolling bearing 636. The stop member 635 is pushed to translate inside the second fixing box 631 by the third slider 642 so that the stop member 635 is separated from the rolling bearing 636. The take-up assembly 630 is equipped with two sets of stop components 635, which are set inside the second fixed box 631 and penetrate the outer wall. They can fit against the bottom of the outer ring of the rolling bearing 636 to achieve axial locking of the take-up drum 634, so that the reinforcing belt 621 pulls the inclined flow retention net 620 to keep it open and positioned, so that the tension of the inclined flow retention net 620 is stable, the flow retention effect is stable at low flow rate, and the flow field control accuracy is high. The stop component 635 can be moved inside the second fixed box 631 by the push of the third slider 642, so as to realize the linkage unlocking with the adjustment of the steering component 640 without the need for separate operation; The stop component 635 includes a stop block 6351 for fitting the bottom end of the outer ring of the stop rolling bearing 636. The stop block 6351 has an arc-shaped structure. A first slider 6352 is fixed to one end of the stop block 6351, and a second slider 6355 is fixed to the other end of the stop block 6351. A push rod 6353 is connected to the side wall of the first slider 6352. One end of the push rod 6353 is connected through the outer wall of the second fixed box 631. The push rod 6353 and the third slider 642 are located on the same horizontal center line. A first spring 6354 is sleeved on the outer wall of the push rod 6353. The first spring 6354 is connected between the side wall of the first slider 6352 and the inner wall of the second fixed box 631. A sliding rod 6356 is inserted inside the second slider 6355 and is fixed inside the second fixed box 631. The first slider 6352 and the second slider 6355 are respectively connected to the two ends of the stop block 6351. The push rod 6353 is connected to the first slider 6352 and passes through the second fixed box 631. The slide rod 6356 is inserted into the second slider 6355 to provide double sliding guidance for the stop component 635 and prevent translational displacement. The outer wall of the push rod 6353 is sleeved with the first spring 6354 and connected between the first slider 6352 and the inner wall of the second fixed box 631 to realize the automatic reset of the stop component 635.

[0052] In this embodiment, the front flow retention assembly 400 includes two fixing plates 410 respectively fixed to the side walls of two first fixing rods 200, a front flow retention net 440 fixed between the two fixing plates 410, two screws 420 rotatably connected to one side of the fixing plate 410, a positioning plate 430 threaded between the outer walls of the two screws 420, and an electric drum 610 fixed across the side walls of the two positioning plates 430. By rotating the screw 420, the positioning plate 430 is moved horizontally, thereby adjusting the installation position of the electric drum 610 and flexibly adjusting the minimum tilt angle of the inclined flow net 620. This further enhances the adaptability of the equipment and meets the personalized fishery suitability needs of different aquaculture species and different aquaculture stages.

[0053] Specifically, according to Figures 1-13 As shown, according to the fish suitability requirements of aquaculture, the minimum tilt angle of the inclined current net 620 is adjusted. The worker rotates the screw 420, and the positioning plate 430 drives the electric drum 610 to move horizontally, so as to adjust the position of the electric drum 610 to wind up the inclined current net 620, thereby changing the minimum tilt angle of the inclined current net 620. When the water flow velocity is high, the electric screw 511 is controlled to rotate by the main controller. The electric screw 511 drives two push blocks 641 to move towards the take-up assembly 630 through two mirrored threaded sections, so that the steering assembly 640 is closer to the take-up assembly 630. The inclined flow-retarding net 620 is mainly set between the front flow-retarding net 440 and the rear flow-retarding net 530. The inclined flow-retarding net 620 promotes the generation of internal vortices, thereby increasing the flow-retarding effect and ensuring the stability of the water flow for fish in the net cage behind the rear flow-retarding net 530. When the push block 641 moves horizontally towards the second fixing box 631, the third slider 642 pushes the push rod 6353 to extend into the second fixing box 631. In this section, push rod 6353 pushes first slider 6352 to translate, first slider 6352 stretches first spring 6354, first slider 6352 drives stop block 6351 to translate and separate from the outer ring of rolling bearing 636, second slider 6355 slides on slide rod 6356, releases the stop on rolling bearing 636, at this time the second spring 637 can make the winding drum 634 slide elastically on the rotating shaft 633, the fixed belt wound on the winding drum 634 can drive the inclined flow net 620 to elastically contract and expand in the vertical direction to adapt to large water flow fluctuations, ensure the safety of inclined flow net 620, and improve the service life of inclined flow net 620; When the water flow velocity is low, the main controller controls the electric screw 511 to rotate in the reverse direction, and starts the electric drum 610 to unwind the inclined flow-retarding net 620. The two push blocks 641 drive the third slider 642 away from the take-up assembly 630. The third slider 642 separates from the push rod 6353, and the first spring 6354 pulls the first slider 6352 back to its original position, causing the stop block 6351 to move horizontally and stop at the bottom of the outer ring of the rolling bearing 636, keeping the drum 634 in position. At the same time, the third slider 642 drives the positioning rod 644 and the net brush 645 to move horizontally. The net brush 645 can scrub the flow-retarding net 530, cleaning up the residue or feces produced and blocked by the fish, ensuring the flow-retarding effect. The positioning rod 644 adheres to and pushes the inclined flow-retarding net 620. The sliding change of the steering support position on the net 620 allows the inclined flow-delaying net 620 to remain taut while being unrolled, and increases the inclination angle of the inclined section of the inclined flow-delaying net 620, reducing the flow-delaying effect on the water flow. It also lengthens the horizontal section of the inclined flow-delaying net 620, which stops in front of the rear flow-delaying net 530. While reducing the flow-delaying effect, it also buffers the water flow that is about to reach the rear flow-delaying net 530, preventing the water flow from directly hitting the rear flow-delaying net 530 and causing impact, thus ensuring the safety of the rear flow-delaying net 530. It also reduces the disturbance to the fish due to large changes in water flow velocity, thereby preventing the fish from being disturbed and further impacting the rear flow-delaying net 530. This improves the safety of the rear flow-delaying net 530 and the fish while reducing the flow-delaying effect. After the horizontal section of the inclined flow-stabilizing net 620 buffers the water flow, the main controller starts the electric drum 610 to wind up the inclined flow-stabilizing net 620. At the same time, the main controller starts the motor 632, which drives the shaft 633 to rotate, causing the winding drum 634 to rotate and unwind the reinforcing belt 621. With the stop block 6351 stopping the rolling bearing 636, the two winding drums 634 are positioned to unwind the reinforcing belt 621, keeping the inclined flow-stabilizing net 620 vertically flat, making it easy for the electric drum 610 to wind up the inclined flow-stabilizing net 620 smoothly until the inclined flow-stabilizing net is fully wound up. When the connection point of 620 and the reinforcing strip 621 reaches the slide bar 6356, the front and rear stagnant nets 440 and 530 are connected. The inclined section of the inclined stagnant net 620 still maintains a small stagnant effect. If it is necessary to remove the stagnant effect of the inclined stagnant net 620, the main controller can control the electric drum 610 to further wind up the inclined stagnant net 620 and control the motor 632 to further unwind the reinforcing strip 621, so that the front and rear stagnant nets 440 and 530 are fully connected, achieving the minimum stagnant effect to further meet the requirements for fisheries suitability.

[0054] 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. All electrical components mentioned herein are electrically connected to the main controller and 220V AC mains power, and the main controller is a common existing technology such as a computer that performs control functions. Content not described in detail in this specification is prior art known to those skilled in the art.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A truss-type aquaculture cage suitable for fish stabilization device, characterized in that: The system includes a net cage body, of which two net cage bodies are mirror-arranged. A first fixing rod is fixedly connected between the front ends of the two net cage bodies, and a second fixing rod is fixedly connected between the rear ends of the two net cage bodies. Two first fixing rods and two second fixing rods are arranged in parallel. A front flow retention component is fixed between the side walls of the two first fixing rods, and a rear flow retention component is fixed between the side walls of the two second fixing rods. The front flow retention component and the rear flow retention component are arranged in parallel and opposite to each other. An oblique flow retention mechanism is connected between the front flow retention component and the rear flow retention component. Two sets of oblique flow retention mechanisms are mirror-arranged. A flow divider plate for diverting water flow is fixed between the side walls of the two sets of oblique flow retention mechanisms. The oblique flow retention mechanism includes an electric drum fixedly connected to one side of the front flow retention component, a steering component slidably connected to one side of the rear flow retention component, and a take-up component fixedly connected to one side of the rear flow retention component. The rear flow retention component includes an electric lead screw disposed inside, on which two threaded sections are arranged in a mirror image. The electric lead screw is used to drive the steering component to slide. An oblique flow retention net is wound inside the electric drum. One side of the oblique flow retention net bypasses the inside of the steering component to achieve steering. Two reinforcing belts are connected to the side of the oblique flow retention net away from the electric drum. The reinforcing belts are wound inside the take-up component.

2. The truss-type aquaculture cage suitable for fish farming and its current retention device according to claim 1, characterized in that: The inclined flow network is configured with inclined and horizontal sections by a steering component. The horizontal section of the inclined flow network is set parallel to the rear flow assembly. The steering component is driven by an electric screw to slide on the rear flow assembly to synchronously adjust the length of the inclined and horizontal sections so that the inclined flow network can be set in two states. In the first state, the steering component is attached to the tape take-up component on one side, and the length of the inclined section of the inclined flow net is greater than the length of the horizontal section. The inclined section of the inclined flow net is used for strong flow retention between the front flow retention component and the rear flow retention component. In the second state, the steering component slides away from the take-up component to reduce the length of the inclined section of the inclined flow net and increase the length of the horizontal section. The inclined section of the inclined flow net is used for weak flow stabilization between the front flow stabilization component and the rear flow stabilization component, and the horizontal section of the inclined flow net is used for flow stabilization buffering between the front flow stabilization component and the rear flow stabilization component.

3. The truss-type aquaculture cage suitable for fish farming and its current retention device according to claim 1, characterized in that: The inclined flow net is set to a third state by being wound up by an electric drum and unwound synchronously by a take-up assembly. In the third state, the electric drum winds up the inclined flow-retaining net so that the inclined flow-retaining net is separated between the electric drum and the steering assembly, and the take-up assembly unwinds the reinforcing belt so that the reinforcing belt is placed between the take-up assembly and the steering assembly, so that the front flow-retaining assembly and the rear flow-retaining assembly are connected.

4. The truss-type aquaculture cage suitable for fish farming and its flow retention device according to claim 1, characterized in that: The angle between the inclined and horizontal sections of the inclined flow network is adjusted by the translation of the steering component, and the angle is 90°-120°.

5. The truss-type aquaculture cage suitable for fish farming and its flow retention device according to claim 4, characterized in that: The rear flow retention assembly also includes two first fixed boxes respectively fixed to the side walls of two second fixed rods, a rear flow retention mesh fixed between the two first fixed boxes, an electric screw set inside the top first fixed box, a steering assembly slidably connected to the inside of the first fixed box on one side, and a steering assembly threadedly sleeved to the outer wall of the electric screw on the other side. Slide rails are fixed to the side walls of both first fixed boxes, and the steering assembly is slidably connected to the two slide rails.

6. The truss-type aquaculture cage suitable for fish farming and its current retention device according to claim 5, characterized in that: The steering assembly includes two third sliders that are slidably connected to two slide rails respectively. A fixing block is fixed on one side of the third slider. Two positioning rods are rotatably connected between the two fixing blocks. An inclined flow-retardant mesh is fitted between the side walls of the two positioning rods. A push block is fixed on the other side of the top third slider. The push block is slidably connected to the inside of the first fixing box. The push block is threaded onto the outer wall of the screw. A mesh brush is fixed between the side walls of the two third sliders. One side of the mesh brush is fitted with the rear flow-retardant mesh.

7. The truss-type aquaculture cage suitable for fish farming and its current retention device according to claim 6, characterized in that: The take-up assembly includes a second fixed box that spans the side walls of the two first fixed boxes. A motor is provided on the top surface of the second fixed box. The rotating end of the motor is connected to a rotating shaft. The rotating shaft is rotatably connected to the inside of the second fixed box. Two tape reels are sleeved on the outer wall of the rotating shaft. Reinforcing tape is wound inside the tape reels.

8. The truss-type aquaculture cage suitable for fish farming and its flow retention device according to claim 7, characterized in that: The take-up assembly also includes a rolling bearing connected to the end of the tape drum. The inner ring of the rolling bearing is fixed to the end of the tape drum. Four retaining rings are fixed on the outer wall of the shaft. A limit block is fixed between two retaining rings. The tape drum is disposed between two retaining rings and is slidably sleeved on the outer wall of the limit block. A second spring is connected between the end of the inner ring of the rolling bearing and the retaining rings so that the tape drum can slide elastically along the axial direction on the outer wall of the shaft.

9. The truss-type aquaculture cage suitable for fisheries with a current-delaying device according to claim 8, characterized in that: The tape take-up assembly also includes two sets of stop components disposed inside the second fixed box. One side of the stop component is connected through to the outer wall of the second fixed box. The stop component is used to fit against and stop the bottom of the outer ring of the rolling bearing. The stop component is pushed to move inside the second fixed box by the third slider so as to separate the stop component from the rolling bearing. The stop component includes a stop block for fitting against the bottom end of the outer ring of the stop rolling bearing. The stop block has an arc-shaped structure. A first slider is fixed to one end of the stop block, and a second slider is fixed to the other end of the stop block. A push rod is connected to the side wall of the first slider. One end of the push rod is connected through to the outer wall of the second fixed box. The push rod and the third slider are located on the same horizontal center line. A first spring is sleeved on the outer wall of the push rod. The first spring is connected between the side wall of the first slider and the inner wall of the second fixed box. A sliding rod is inserted into the second slider and fixed inside the second fixed box.

10. The truss-type aquaculture cage suitable for fish farming and its current retention device according to claim 1, characterized in that: The pre-retention assembly includes two fixed plates respectively fixed to the side walls of two first fixed rods, a pre-retention net fixed between the two fixed plates, two screws rotatably connected to one side of the fixed plates, a positioning plate threaded between the outer walls of the two screws, and an electric drum fixed across the side walls of the two positioning plates.

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