Gravity type net cage

Abstract

The invention discloses a gravity type net cage, and relates to the technical field of aquaculture, the gravity type net cage comprises a feed distribution box, a plurality of feeding pipes, a floating device and a feeding device, the feed distribution box comprises an input port and a plurality of output ports, and the multiple output ports are arranged at intervals in the circumferential direction of the feed distribution box; the plurality of feeding pipes extend obliquely and upwards, the upper ends of the plurality of feeding pipes are correspondingly communicated with the plurality of output ports of the feed distribution box, and a plurality of feeding holes are formed in the lower side of each feeding pipe; the floating device is annularly arranged, a plurality of mounting parts are arranged on the upper side of the floating device and used for being correspondingly connected with the lower ends of the feeding pipes, and the floating device is used for supporting the gravity type net cage to float on the horizontal plane; the feeding device comprises a feeding pipe, one end of the feeding pipe is communicated with the input port, and the other end of the feeding pipe is used for being communicated with an external breeding ship so that feed can be provided for the feed distribution box through the feeding pipe. Therefore, the service life is prolonged, the feed feeding efficiency is improved, and uniform feeding is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aquaculture, in particular to a gravity type net cage. BACKGROUND

[0002] The traditional gravity type net cage (generally with a circumference of 40m-160m and a diameter of about 13m-51m) generally adopts manual feeding, which is low in efficiency, uneven in distribution and causes fish to rush to the middle for food and waste of feed. SUMMARY

[0003] The main purpose of the present application is to provide a gravity type net cage, which aims to increase the service life, improve the feeding efficiency and achieve uniform feeding.

[0004] To achieve the above purpose, the gravity type net cage provided by the present application comprises:

[0005] A feed distribution box comprising an input port and a plurality of output ports, the plurality of output ports being arranged in a circumferential direction of the feed distribution box;

[0006] A plurality of feeding pipes arranged in an inclined upward direction, having opposite upper ends and lower ends, and lower sides facing the horizontal plane and upper sides away from the horizontal plane, the upper ends of the plurality of feeding pipes being in communication with the plurality of output ports of the feed distribution box, and a plurality of feeding holes being formed in the lower side of each feeding pipe;

[0007] A floating device arranged in a ring shape, the upper side of the floating device being provided with a plurality of mounting portions for connecting the lower ends of the feeding pipes, the floating device being used to support the gravity type net cage to float on the horizontal plane; and

[0008] A feeding device comprising a feeding pipe, one end of the feeding pipe being in communication with the input port, and the other end being in communication with an external breeding ship, so as to provide feed to the feed distribution box through the feeding pipe.

[0009] In an embodiment, the diameters of the plurality of feeding holes gradually increase from the upper end of the feeding pipe to the lower end of the feeding pipe.

[0010] The distribution density of the plurality of feeding holes gradually decreases from the upper end of the feeding pipe to the lower end of the feeding pipe.

[0011] In an embodiment, the feeding pipe comprises a plurality of sections, and the gravity type net cage further comprises:

[0012] At least one connecting portion for detachably connecting two adjacent sections of the feeding pipe.

[0013] In an embodiment, the connecting portion comprises:

[0014] A connecting pipe is sleeved on opposite ends of two adjacent feeding pipes, and a through hole is formed in the circumferential wall of the part where the connecting pipe is sleeved on the feeding pipes.

[0015] A connecting member is arranged in the through hole.

[0016] A sealing member is arranged in the form of a ring and abuts against the inner wall of the connecting pipe and the outer circumferential surface of the feeding pipe.

[0017] In an embodiment, the material strength of the connecting pipe is less than that of the feeding pipe.

[0018] In an embodiment, the through hole extends along the axial direction of the connecting pipe.

[0019] The feeding pipe further comprises:

[0020] Two rotating parts are arranged at the upper end and the lower end of the feeding pipe, respectively, and the rotating part arranged at the lower end of the feeding pipe is rotatably installed on the mounting part, and the rotating part arranged at the upper end of the feeding pipe is rotatably installed on the output port, so as to adjust the inclination angle of the feeding pipe.

[0021] The connecting member is movably arranged in the through hole along the axial direction of the connecting pipe, so as to adjust the length of the telescopic pipe when the feeding pipe rotates relative to the floating device and / or the feed distribution box.

[0022] In an embodiment, the angle between the feeding pipe and the horizontal plane is A, wherein 10°≤A≤20°.

[0023] In an embodiment, the gravity-type net cage further comprises:

[0024] The backwashing pipeline comprises a plurality of water outlets corresponding to the plurality of feeding holes, so as to supply water to the feeding pipe.

[0025] A plurality of first air valves are arranged on the plurality of backwashing pipelines, so as to control the opening and closing of the backwashing pipelines.

[0026] An air compression device is in communication with the backwashing pipeline and is drivingly connected to the plurality of first air valves, so as to drive the water in the backwashing pipeline to flow to the feeding holes and control the opening and closing of the plurality of first air valves.

[0027] In an embodiment, the feed supply device further comprises:

[0028] A support ring is fixedly connected to the circumferential upper side of the floating device, so as to form a through hole with an axis parallel to the horizontal plane, and the feed supply pipe is arranged in the through hole.

[0029] The support ring is arranged in a staggered manner with the lower end of the feeding pipe.

[0030] In an embodiment, the gravity type net cage further comprises:

[0031] A blocking member is arranged in the feeding pipe and between the feeding hole and the lower end of the feeding pipe, so as to prevent the accumulation of feed at the lower end of the feeding pipe.

[0032] In the technical solution of the present application, the feed enters the distribution box through the feeding pipe and then enters each feeding pipe through the circumferentially distributed outlets. Due to the upward inclination of the pipe, the feed naturally slides to the feeding hole at the lower part under the action of gravity. The floating device maintains the horizontal position of the lower end of the feeding pipe, so that the feeding hole and the feed distribution box are always at a predetermined height above the water surface, so that the feed is naturally dispersed during the falling process, and the feed distribution box is not in direct contact with the sea level, thereby avoiding the frequent stress on the feeding pipe caused by wind and waves and affecting the service life. When the feed continuously overflows from the feeding hole, a plurality of feeding pipes are arranged in a circumferential interval along the feed distribution box, and a plurality of feeding holes are arranged in an interval on the lower side of the feeding pipe, thereby forming a feeding belt covering the entire breeding area, and eliminating the blind area of traditional manual throwing. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained according to the structures shown in the drawings without creative labor for those skilled in the art.

[0034] Figure 1 The top view structural schematic diagram of an embodiment of the gravity type net cage provided by the present application;

[0035] Figure 2 The Figure 1 The front view structural schematic diagram of the gravity type net cage;

[0036] Figure 3 The Figure 2 The structural schematic diagram of the B direction;

[0037] Figure 4 The Figure 2 The structural schematic diagram of the feeding pipe;

[0038] Figure 5 The Figure 4 The sectional view of the connecting part;

[0039] Figure 6 The Figure 1 The structural schematic diagram of the support ring.

[0040] Description of Figure Numbers:

[0041] 100. Gravity cage; 1. Feed distribution box; 11. Input port; 12. Output port; 2. Feeding pipe; 21. Feeding hole; 22. Rotating part; 3. Floating device; 31. Mounting part; 4. Feeding device; 41. Feeding pipe; 42. Support ring; 421. Through hole; 5. Connecting part; 51. Connecting pipe; 52. Connecting piece; 53. Sealing piece; 6. Backwashing line; 61. First air valve; 62. Second air valve; 63. Discharge port; 7. Air compressor; 8. Blocking piece.

[0042] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0044] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0045] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0046] Conventional gravity-fed aquaculture cages rely on manual feeding, resulting in low feeding efficiency and uneven feed distribution. Manual operation is difficult to cover large water areas, leading to feed accumulation at the edges of the cages and insufficient supply in the center, causing fish to gather and compete for food. This method of operation is difficult to meet the needs of large-scale aquaculture, restricting stocking density and fish growth uniformity.

[0047] In order to solve the above problems, the present invention proposes a gravity cage 100.

[0048] See also Figure 1 and Figure 2 In one embodiment of the present invention, the gravity cage 100 includes a feed distribution box 1, a plurality of feeding pipes 2, a floating device 3 and a feeding device 4, wherein the feed distribution box 1 includes an input port 11 and a plurality of output ports 12, and the plurality of output ports 12 are arranged at intervals along the circumference of the feed distribution box 1; the plurality of feeding pipes 2 are arranged to extend upwardly in an inclined manner, so as to have opposite upper and lower ends, and a lower side facing the horizontal plane and an upper side facing away from the horizontal plane, and the upper ends of the plurality of feeding pipes 2 correspond to the plurality of output ports of the feed distribution box 1. 12 is connected, and a plurality of feeding holes 21 are opened on the lower side of each feeding tube 2; the floating device 3 is arranged in a ring shape, and a plurality of mounting parts 31 are provided on the upper side of the floating device 3 for corresponding connection with the lower end of the feeding tube 2, and the floating device 3 is used to support the gravity cage 100 to float on the horizontal plane; the feeding device 4 includes a feeding pipe 41, one end of the feeding pipe 41 is connected to the input port 11, and the other end is used to communicate with an external breeding ship to provide feed to the feed distribution box 1 through the feeding pipe 41.

[0049] The circumferential outlets 12 of the feed distribution box 1 are evenly distributed outlets along the circumference of the box. Specifically, this can be achieved using an annular diversion cavity structure to ensure even distribution of feed to each feeding tube 2. The upwardly extending angle of the feeding tubes 2 means that the axis of the tubes forms an angle with the horizontal plane, specifically an angle of 10-45 degrees. This utilizes gravity to promote feed flow. Furthermore, to accelerate feed flow, an air compressor 7 can be connected to the outlet 12 of the feed distribution box 1 to apply air pressure to the feed distribution box 1 to promote feed flow.

[0050] The feeding hole 21 is designed to be located on the bottom surface of the pipe. Specifically, an array of circular holes with varying diameters can be used to prevent feed accumulation within the pipe. The annular design of the floating device 3 refers to a closed ring structure formed by the floating body. Specifically, this can be achieved by connecting segmented buoys to provide stable support for the feeding system. The through-hole design of the feeding device 4 refers to a delivery pipeline that passes through the center of the floating body. Specifically, a flexible hose can be used to connect the distribution box to the external feeding equipment.

[0051] In the technical solution of the present application, the feed enters the distribution box through the feed pipe 41, and then enters each feeding pipe 2 through the circumferentially distributed outlet. Due to the upward inclination of the pipeline, the feed naturally slides to the lower feeding hole 21 under the action of gravity. The floating device 3 maintains the horizontal position of the lower end of the feeding pipe 2, so that the feeding hole 21 and the feed distribution box 1 are always at a predetermined height above the water surface, so that the feed is naturally dispersed during the falling process, and the feed distribution box 1 is not in direct contact with the sea level, avoiding the influence of service life caused by frequent stress of the feeding pipe 2 due to wind and waves. When the feed continuously overflows from the feeding hole 21, a plurality of feeding pipes 2 are arranged circumferentially along the feed distribution box 1, and a plurality of feeding holes 21 are arranged circumferentially along the feed distribution box 1, forming a feeding belt covering the entire breeding area, eliminating the blind area of traditional manual throwing.

[0052] Compared with the prior art, the traditional manual throwing relies on the experience of the operator, and the feeding range is limited to the edge area of the net cage. The present application realizes automatic feeding through a mechanical distribution system, and the inclination angle of the feeding pipe 2 is designed to make the feed naturally dispersed during the falling process, and to avoid the influence of the service life of the device due to wind and waves, and the circumferential distribution structure ensures the balanced supply of each area. Compared with the fixed feeding machine, the dynamic connection structure of the floating device 3 and the feeding pipe 2 can adapt to the water level change and keep the feeding height constant. The feed pipe 41 is directly connected to the external transport equipment to realize continuous operation without manual intervention.

[0053] Through the above technical solution, the present application realizes the automatic and uniform feeding of the feed, effectively eliminating the phenomenon of fish aggregation and food stealing. The circumferentially distributed feeding pipe 2 forms a continuous feeding belt, so that the feed covers the entire breeding area. The inclined pipeline structure utilizes gravity to realize the natural flow of the feed, reducing energy consumption. The integrated design of the floating device 3 and the feeding pipe 2 ensures the stable operation of the system and adapts to the change of the water environment. The direct connection of the feed device 4 and the external equipment significantly improves the operation efficiency and reduces the labor intensity.

[0054] Please refer to Figure 3 In an embodiment of the present application, the diameters of the plurality of feeding holes 21 gradually increase from the upper end of the feeding pipe 2 to the lower end of the feeding pipe 2; and the distribution density of the plurality of feeding holes 21 gradually decreases from the upper end of the feeding pipe 2 to the lower end of the feeding pipe 2.

[0055] The gradually increasing diameter of the feeding hole 21 means that the hole diameter gradually increases along the direction of the feed flow, and can be realized by using a segmented incremental drilling method, for example, a hole with a diameter of 30 mm is arranged on the upper segment of the feeding pipe 2, a hole with a diameter of 40 mm is arranged on the middle segment, and a hole with a diameter of 50 mm is arranged on the lower segment. The design adjusts the feed flow rate of different segments by changing the hole diameter gradient, and compensates for the attenuation of the discharge amount caused by the flow rate difference under the action of gravity. The gradually decreasing distribution density of the feeding hole 21 means that the number of holes per unit length decreases from top to bottom, and can be realized by arranging 4 holes per meter on the upper segment, 2 holes per meter on the middle segment, and 1 hole per meter on the lower end. This layout avoids the concentration of a large amount of feed in the lower end area at the same time due to the accelerated feed flow rate by reducing the hole density in the lower end area.

[0056] Specifically, during the flow of the feed from top to bottom, the combination of the small hole diameter and the high density of holes in the upper end forms multiple dispersed feed flows, reduces the initial flow rate, and increases the spreading density in the proximal region. As the feed flows to the middle and lower segments, the gradually increasing hole diameter can increase the discharge rate of the individual hole, making up for the decrease in the total amount of feed caused by the acceleration of gravity, and the reduced hole density avoids the release of too much feed in the pipe segment with the fastest flow rate. This combination mechanism of reverse changes in hole diameter and density allows the proximal region to achieve uniform and dispersed distribution through high-density small holes, and the distal region to expand the coverage range through low-density large holes, forming a gradually expanding feeding distribution from the center to the periphery.

[0057] Compared with the prior art, the feeding pipe 2 of the traditional gravity type net cage 100 usually adopts a uniform hole diameter and an equidistantly distributed hole structure, which causes excessive accumulation of feed in the proximal end due to slow flow rate and premature depletion of feed in the distal end due to fast flow rate. The present scheme breaks through the technical limitation that the discharge amounts of the proximal and distal ends cannot be dynamically balanced under a uniform structure by establishing a gradient compensation mechanism of hole diameter and density, so that the feed flow rate and the flow rate of different segments form a matching relationship.

[0058] Through the above technical scheme, the present application realizes the dynamic balance of the whole feeding pipe 2, and effectively alleviates the food stealing phenomenon caused by the local lack of feed of the fish group.

[0059] Please refer to Figure 4 In an embodiment of the present application, the feeding pipe 2 includes multiple segments, and the gravity type net cage 100 further includes at least one connecting part 5 for detachably connecting two adjacent segments of the feeding pipe 2.

[0060] The feeding pipe 2 comprises multiple segments, that is, the feeding pipe 2 is divided into multiple independent pipe segments, and can be implemented by adopting a segmented pipe body structure, for example, the length of each segment is controlled within a range of 1 m to 3 m. The design allows only a specific pipe segment to be replaced when local damage occurs, thereby avoiding resource waste caused by overall replacement.

[0061] Specifically, the feeding pipe 2 is divided into multiple segments, and adjacent pipe segments are assembled through the connecting part 5. When a certain segment is blocked or damaged, only the connecting part 5 of the corresponding segment needs to be disassembled, and the damaged part can be replaced. For example, the connecting pipe 51 in the connecting part 5 is sleeved at the end of the adjacent pipe segment, the connecting part 51 is locked in position through the through hole, and the sealing element 53 prevents the feed from overflowing from the connection. The design makes it unnecessary to disassemble the entire feeding pipe 2 system for maintenance operation, thereby significantly reducing the maintenance time and labor cost.

[0062] Compared with the prior art, the feeding pipe 2 of the traditional gravity type net cage 100 has a whole structure, and needs to be replaced in its entirety once local damage occurs, thereby resulting in high maintenance cost and complex operation. The present scheme realizes local maintenance function through the segmented design and the detachable connecting part 5, and the sealing structure of the connecting part 5 ensures normal operation of the system, thereby solving the problem of low maintenance efficiency of the traditional scheme.

[0063] Please refer to Figure 5 In an embodiment of the present application, the connecting part 5 comprises a connecting pipe 51, a connecting element 51 and a sealing element 53, the connecting pipe 51 is sleeved at opposite ends of adjacent two segments of the feeding pipe 2, through holes are formed in the circumferential side wall of the part where the connecting pipe 51 is sleeved with each segment of the feeding pipe 2, the connecting element 51 penetrates the through holes, and the sealing element 53 is annularly arranged and abuts against the inner wall surface of the connecting pipe 51 and the outer circumferential surface of the feeding pipe 2.

[0064] The connecting pipe 51 is a tubular part for wrapping the end of the adjacent feeding pipe 2, the sleeving structure forms a basis for physical connection and realizes axial positioning of the feeding pipe 2 segment. The connecting element 51 is a fastening part penetrating the through hole, and can be a bolt or a pin. The sealing element 53 is an annular elastic material, which can be rubber or silicone, and fills the gap between the connecting pipe 51 and the feeding pipe 2 through surface contact to block the feed leakage path.

[0065] Specifically, the connecting pipe 51 is sleeved on the end of the two sections of the feeding pipe 2, the through hole provides a through channel for the connecting piece 51, and rigid fixing is formed by screwing a bolt or inserting a pin. The sealing piece 53 is deformed under pressure between the connecting pipe 51 and the feeding pipe 2, and a continuous annular sealing surface is formed. When the feeding pipe 2 is conveying feed, the mechanical constraint of the connecting piece 51 can resist the axial impact force generated by the flow of the feed, and the elastic deformation of the sealing piece 53 compensates for the assembly tolerance between the connecting pipe 51 and the feeding pipe 2, preventing feed particles from overflowing from the connecting gap. The connecting pipe 51 and the feeding pipe 2 are sleeved instead of welded, allowing the sections of the feeding pipe 2 to be quickly separated by disassembling the connecting piece 51, facilitating the cleaning of internal blockages or the replacement of damaged parts.

[0066] Compared with the prior art, the conventional feeding pipe 2 is welded as a whole or connected by a flange, which has the problems of difficult disassembly and easy wear of the sealing surface. The sleeve structure and the detachable connecting piece 51 are combined in the scheme, which realizes quick disassembly while maintaining the connection strength; the annular sealing piece 53 and the mechanical fastening work together to prevent feed leakage and avoid connection loosening, overcoming the common sealing failure risk of sectional pipes.

[0067] Through the above technical scheme, the application ensures the sealing performance of the connecting section of the feeding pipe 2, avoids leakage of the feed during conveying; the connecting structure has impact resistance stability, preventing displacement of the feeding pipe 2 due to water flow or feed flow; the detachable design simplifies the pipeline maintenance process, reducing the overall replacement cost caused by damage to the connecting structure.

[0068] In an embodiment of the application, the material strength of the connecting pipe 51 is less than that of the feeding pipe 2.

[0069] The connecting pipe 51 refers to a tubular component for connecting two adjacent sections of the feeding pipe 2, which can be implemented by using polyethylene material, and its elastic modulus is lower than that of the feeding pipe 2 material. The feeding pipe 2 refers to a pipe body for conveying feed, which can be implemented by using polyvinyl chloride or HDPE material, and its tensile strength is higher than that of the connecting pipe 51 material. The difference in material strength causes the connecting pipe 51 to deform preferentially when subjected to mechanical stress, thereby avoiding damage to the main structure of the feeding pipe 2.

[0070] Specifically, when the feeding pipe 2 is subjected to water flow impact or feed conveying pressure, the connecting pipe 51 as a low-strength material component first absorbs energy and produces reversible deformation, for example, in the process of axial stretching or radial extrusion, the connecting pipe 51 disperses stress through its own material properties. If the external force exceeds the bearing range, the connecting pipe 51 breaks or is damaged, and only the component needs to be replaced without disassembling the main structure of the feeding pipe 2. In maintenance operations, since the connecting pipe 51 material is easier to cut or deform, the operator can quickly complete local replacement, for example, using a hot melt tool to cut the polyethylene connecting pipe 51 and then installing a new component.

[0071] Through the technical scheme, the directional protection function of the connection part 5 is realized, and under the premise of ensuring the structural integrity of the feeding pipe 2, the difficulty of maintenance work is reduced through the replaceable low-strength connecting pipe 51, and the impact of mechanical stress on the main pipeline is effectively relieved through the gradient distribution of the material strength.

[0072] Please refer to Figure 4 In an embodiment of the present application, the through hole extends along the circumference of the connecting pipe 51; the feeding pipe 2 further comprises two rotating parts 22, which are respectively arranged at the upper end and the lower end of the feeding pipe 2, and the rotating part 22 located at the lower end of the feeding pipe 2 is rotatably installed on the mounting part 31, and the rotating part 22 located at the upper end of the feeding pipe 2 is rotatably installed on the output port 12, so as to adjust the inclination angle of the feeding pipe 2; wherein the connecting piece 51 is movably arranged in the through hole along the axial direction of the connecting pipe 51, so as to adjust the length of the telescopic pipe when the feeding pipe 2 rotates relative to the floating device 3 and / or the feed distribution box 1.

[0073] The rotating part 22 refers to a rotatable connection structure arranged at the end of the feeding pipe 2, which can be realized by a hinged seat with a bearing, and the included angle between the feeding pipe 2 and the horizontal plane is changed through the rotary motion of the rotating part 22. The axial movement of the connecting piece 51 in the through hole means that the connecting piece 51 can move axially in the through hole, which can be realized by a bolt structure with a sliding groove, so that the connecting piece 51 moves axially along the through hole when the feeding pipe 2 rotates, thereby compensating for the length difference caused by the change in angle. The axial extension of the through hole provides the connecting piece 51 with axial movement space.

[0074] Specifically, when it is necessary to adjust the feeding angle, the feeding pipe 2 is driven to rotate around the upper and lower end axes by the rotating part 22, and at this time the connecting piece 51 slides axially in the through hole, so that the length of the sleeve connection between the connecting pipe 51 and the feeding pipe 2 changes adaptively. During this process, the circumferential extension structure of the through hole provides the connecting piece 51 with sufficient displacement allowance, avoiding the jamming or structural deformation of the connecting piece 51 caused by angle adjustment. At the same time, the rotating cooperation of the rotating part 22 with the mounting part 31 and the output port 12 ensures the sealing of the feed conveying path during angle adjustment, preventing feed leakage. By changing the inclination angle of the feeding pipe 2, the trajectory distribution range of the feed thrown from the feeding hole 21 can be controlled.

[0075] Compared with the prior art, the feeding pipe 2 of the traditional gravity type net cage 100 is installed at a fixed angle, which cannot adjust the throwing range according to the fish distribution or water flow conditions, resulting in insufficient accumulation or coverage of the feed. However, the present scheme realizes stepless adjustment of the angle of the feeding pipe 2 through the cooperation of the rotating part 22 and the axially movable connecting piece 51, so that the feed throwing range can accurately match the actual needs of the breeding area, solving the problem of throwing uniformity caused by fixed angle.

[0076] By the technical scheme, the application realizes dynamic adjustment of the inclination angle of the feeding pipe 2, can flexibly adjust the feed throwing range according to different breeding densities, fish group activity areas and environmental conditions, and effectively avoids the local feed excess or deficiency phenomenon caused by fixed angle. The axial movable connection of the connecting piece 51 and the through hole eliminates the structural interference during angle adjustment, ensures reliable connection of the pipeline system, and the rotary sealing design of the rotating part 22 maintains the continuity of the feed conveying.

[0077] In an embodiment of the application, the angle between the feeding pipe 2 and the horizontal plane is A, wherein 10°≤A≤20°.

[0078] The angle A between the feeding pipe 2 and the horizontal plane refers to the acute angle formed by the extension direction of the feeding pipe 2 and the horizontal plane, which can be realized by adjusting the installation height difference of the two ends of the feeding pipe 2 on the floating device 3 and the feed distribution box 1. The angle range is designed by fluid mechanics balance, which not only ensures smooth flow of feed along the inclined pipe by gravity, but also realizes radial diffusion of feed through the feeding hole 21.

[0079] Specifically, when the angle A is within the range of 10° to 20°, the gravity component and the pipe wall friction force acting on the feed flowing in the feeding pipe 2 reach a balance. If the angle is less than 10°, the feed flow speed is too slow and easy to be retained in the middle section of the pipe, resulting in sharp reduction of the discharge amount of the feeding hole 21; if the angle exceeds 20°, the feed flow speed is too fast, resulting in too concentrated discharge of the feeding hole 21. By controlling the angle range, the feed is uniformly dispersed to the feeding holes 21 at different radial positions during the flow process, covering the center to the edge area of the net cage.

[0080] By the technical scheme, the application solves the problem of imbalance between feed flow speed and distribution range caused by improper inclination angle of the feeding pipe 2, realizes uniform diffusion of feed in the net cage, and reduces feed waste and fish feeding competition.

[0081] Please refer to Figure 2 In an embodiment of the application, the gravity type net cage 100 further comprises a backwashing pipeline 6, a plurality of first air valves 61 and an air compression device 7. The backwashing pipeline 6 comprises a plurality of water outlets corresponding to and communicating with the plurality of feeding holes 21, for supplying water to the feeding pipe 2; the plurality of first air valves 61 are correspondingly arranged on the plurality of backwashing pipelines 6, for controlling the opening and closing of the backwashing pipelines 6; the air compression device 7 communicates with the backwashing pipeline 6 and is drivingly connected to the plurality of first air valves 61, for driving the water in the backwashing pipeline 6 to flow to the feeding hole 21 and controlling the opening and closing of the plurality of first air valves 61.

[0082] The backwashing pipeline 6 refers to a water supply channel communicated with the feeding hole 21, which can specifically adopt a bifurcated pipeline structure to guide the water source to each feeding hole 21, and the residual feed is washed away by the reverse water flow to avoid the blockage of the feeding hole 21. The first air valve 61 refers to an execution element for controlling the on-off of the backwashing pipeline 6, which can specifically adopt an electromagnetic valve or a pneumatic valve to realize the local flushing of the different area feeding pipe 2 by independent opening and closing. The air compression device 7 refers to an air pressure driving system for providing water source power and valve control, which can specifically adopt a water pump and compressed air linkage mechanism to drive the reverse flow of the water flow and synchronously adjust the valve state, so as to ensure the coordination and efficiency of the flushing process.

[0083] Specifically, the water outlet of the backwashing pipeline 6 is directly communicated with the feeding hole 21, and after the feed is put in, the air compression device 7 is started to drive the water flow to enter the feeding pipe 2 in the reverse direction along the backwashing pipeline 6. The water flow is washed outward from the feeding hole 21 to remove the feed particles adhered to the pipe wall or blocked in the hole. The plurality of first air valves 61 correspond to different feeding pipes 2 or pipe sections, and the local blocked area can be directed flushed by independent control to avoid the waste of water resources caused by overall flushing. The air compression device 7 drives the water flow by air pressure and links the valve opening and closing, for example, when starting the flushing, the first air valve 61 of the corresponding area is first opened, then the directional flushing is realized by the pressurized water flow, and the valve is automatically closed after the flushing is completed, forming an automatic cleaning process.

[0084] Compared with the prior art, the traditional gravity type net cage 100 relies on manual cleaning of the feeding pipe 2, which has the problems of low efficiency and incomplete cleaning, while the present scheme realizes automatic physical flushing through the backwashing system, and the feeding pipe 2 can be kept unblocked without manual intervention. The prior art lacks a directional cleaning means for the blockage of the feeding hole 21, and the present scheme can accurately locate the blocked area and efficiently flush it through the linkage of the first air valve 61 controlled by shunt and the air compression device 7, thereby significantly reducing the maintenance cost.

[0085] Through the above technical scheme, the present application solves the problem of uneven distribution of feed caused by the blockage of the feeding pipe 2, ensures the unblocking of the feeding hole 21 by reverse water flow flushing, avoids the corruption and deterioration of the residual feed, realizes local accurate cleaning by shunt control, reduces water consumption, improves cleaning efficiency by air pressure driving and valve linkage, reduces the demand for manual maintenance, thereby ensuring the uniformity of feed distribution and reducing waste.

[0086] Further, the feed distribution pipe circumferential surface is also communicated with a discharge port 63 and a second air valve 62 for controlling the opening and closing of the discharge port 63, and the air compression device 7 is also connected to the second air valve 62. When the backwashing pipeline 6 is started, the feed can be flushed out of the discharge port 63 and re-fed into the water to reduce waste.

[0087] Please refer to Figure 1 and Figure 6In an embodiment of the present application, the outer peripheral side of the support ring 42 is fixedly connected to the circumferential upper side of the floating device 3 to form a through hole 421 with an axis parallel to the horizontal plane, and the feed pipe 41 is arranged in the through hole 421. The support ring 42 is arranged in a staggered manner with the lower end of the feeding pipe 2.

[0088] The support ring 42 refers to a ring structure arranged around the circumferential upper side of the floating device 3, which can be made of metal or high-strength plastic material and fixed to the floating device 3 by welding or bolt connection, for enhancing the structural stability of the floating device 3 and providing a fixed channel for the feed pipe 41. The through hole 421 refers to a through hole formed in the axial direction of the support ring 42, which has a diameter larger than the outer diameter of the feed pipe 41, for example, the diameter can be 5-10 mm larger than the outer diameter of the feed pipe 41, so that a proper gap is reserved when the feed pipe 41 is vertically arranged to avoid friction. The staggered arrangement means that the installation position of the support ring 42 on the circumferential upper side of the floating device 3 is spaced apart from the connection point of the lower end of the feeding pipe 2, for example, the support ring 42 can be arranged in the area between the adjacent two feeding pipe 2 mounting parts 31 to avoid overlapping in the circumferential or radial direction. In addition, the circumferential inner wall surface of the support ring 42 can also be provided with anti-wear materials to further reduce wear.

[0089] Specifically, the support ring 42 is fixedly connected to the upper side of the floating device 3 through the outer peripheral side to form an integral structure, and the axis thereof is parallel to the horizontal plane, so that the feed pipe 41 can be vertically arranged in the through hole 421 to keep the relative position between the feed pipe 41 and the feed distribution box 1 stable under the action of waves. The staggered arrangement of the support ring 42 and the lower end of the feeding pipe 2 allows the installation position of the feeding pipe 2 on the floating device 3 to be not limited by the space of the support ring 42, for example, the lower end of the feeding pipe 2 can be freely adjusted in inclination angle without avoiding the support ring 42, and the arrangement path of the feed pipe 41 is separated from the distribution area of the feeding pipe 2 to avoid the feed pipe 41 being deformed under pressure or the installation angle of the feeding pipe 2 being limited due to overlapping positions.

[0090] Through the above technical solution, the present application realizes the stable installation of the feed pipe 41 on the floating device 3, avoids the deviation or blockage of the feed conveying path caused by the structural shaking, and at the same time, guarantees the installation freedom of the feeding pipe 2 through the staggered design of the space to prevent the position interference between the support ring 42 and the feeding pipe 2 from affecting the adjustment of the feeding angle and the feed diffusion range.

[0091] In an embodiment of the present application, a plugging member 8 is arranged in the feeding pipe 2, which is located between the feeding hole 21 and the lower end of the feeding pipe 2, for preventing the accumulation of feed at the lower end of the feeding pipe 2.

[0092] The blocking member 8 refers to a physical blocking structure arranged inside the feeding pipe 2 and located between the feeding hole 21 and the pipe end, which can be realized by a transverse partition plate or a conical plug. The partition plate can be fixedly installed perpendicular to the axis of the feeding pipe 2, and the outer edge is in sealing contact with the inner wall of the pipe body; the large end of the conical plug is larger in diameter than the opening of the feeding pipe 2 end, and is fixed at the position below the feeding hole 21 by a support structure. This structure blocks the path of the feed sliding along the pipe wall, forcing the feed to only be discharged outward through the feeding hole 21.

[0093] Specifically, after the feed enters the feeding pipe 2 from the feed distribution box 1, it slides downward along the inclined pipe wall under the action of gravity. When it reaches the position of the blocking member 8, the feed flow path is completely blocked, and at this time the feed can only be discharged outward through the feeding hole 21 opened in the side wall of the feeding pipe 2. Since the blocking member 8 is located below all the feeding holes 21, the feed that is not discharged in time cannot move downward beyond the blocking member 8, thereby forming a temporary accumulation in the area of the feeding hole 21. The pressure difference generated by this accumulation promotes the accelerated discharge of the feed from the feeding hole 21 until the feed in this section of the pipe is completely discharged. When the feeding is stopped, the feed remaining above the blocking member 8 can continue to be discharged through the feeding hole 21, while the pipe section below the blocking member 8 remains empty.

[0094] Compared with the prior art, the conventional feeding pipe 2 is not provided with an end blocking structure, and the feed continues to accumulate at the end of the pipe under the action of inertia, resulting in a significantly higher amount of feed accumulation in the end region than in other parts. This not only causes uneven discharge of the feeding hole 21, but also causes mold due to long-term retention of the feed at the end. The present scheme forces the diversion of all feed through the feeding hole 21, reducing the possibility of end accumulation.

[0095] Through the above technical scheme, the present application effectively solves the problem of uneven feeding caused by feed accumulation at the end of the feeding pipe 2, avoids the phenomenon of feed waste caused by local accumulation, and prevents the risk of pipe blockage caused by spoilage of residual feed, ensuring long-term stable operation of the feeding system.

[0096] The above is only an exemplary embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made by utilizing the contents of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A gravity cage, characterized in that: include: A feed distribution box comprises an input port and a plurality of output ports, wherein the plurality of output ports are spaced apart along the circumference of the feed distribution box; A plurality of feeding tubes are arranged to extend upwardly at an angle, and have opposing upper and lower ends, and a lower side facing the horizontal plane and an upper side facing away from the horizontal plane, wherein the upper ends of the plurality of feeding tubes are correspondingly connected to the plurality of output ports of the feed distribution box, and a plurality of feeding holes are formed on the lower side of each feeding tube; A floating device is arranged in an annular shape, and a plurality of mounting portions are provided on the upper side of the floating device for correspondingly connecting the lower ends of the plurality of feeding tubes. The floating device is used to support the gravity cage to float on a horizontal surface; and The feeding device comprises a feeding pipe, one end of which is connected to the input port, and the other end of which is connected to an external breeding vessel, so as to provide feed to the feed distribution box through the feeding pipe.

2. The gravity cage according to claim 1, wherein: The diameters of the plurality of feeding holes are gradually increased from the upper end of the feeding tube to the lower end of the feeding tube; The distribution density of the multiple feeding holes is gradually reduced from the upper end of the feeding tube to the lower end of the feeding tube.

3. The gravity cage according to claim 1, wherein: The feeding pipe includes multiple sections, and the gravity cage also includes: At least one connecting portion is used to detachably connect two adjacent sections of the feeding tube.

4. The gravity cage according to claim 3, wherein: The connecting portion includes: The connecting pipe has two ends respectively sleeved on opposite ends of the two adjacent feeding pipe sections, and a through hole is formed on the peripheral side wall of the portion where the connecting pipe sleeves with each feeding pipe section; a connecting member, passing through the through hole; and The sealing member is arranged in an annular shape and abuts against the inner wall surface of the connecting pipe and the outer peripheral side surface of the feeding pipe respectively.

5. The gravity cage according to claim 4, wherein: The material strength of the connecting pipe is less than the material strength of the feeding pipe.

6. The gravity cage according to claim 4, wherein: The through hole extends along the axial direction of the connecting pipe; The feeding tube further comprises: Two rotating parts, the two rotating parts are respectively provided at the upper end and the lower end of the feeding tube, and the rotating part located at the lower end of the feeding tube is rotatably mounted on the mounting part, and the rotating part located at the upper end of the feeding tube is rotatably mounted on the output port, for adjusting the inclination angle of the feeding tube; The connecting member is movably provided in the through hole along the axial direction of the connecting tube, so as to adjust the length of the telescopic tube when the feeding tube rotates relative to the floating device and / or the feed distribution box.

7. The gravity cage according to claim 1, wherein: The angle between the feeding tube and the horizontal plane is A, wherein 10°≤A≤20°.

8. The gravity cage according to claim 1, wherein: The gravity cage also includes: a backwash pipeline, comprising a plurality of water outlets, the plurality of water outlets correspondingly communicating with the plurality of feeding holes for supplying water to the feeding pipe; a plurality of first air valves, correspondingly provided on the plurality of backwash pipelines, for controlling the opening and closing of the backwash pipelines; and An air compressor is communicated with the backwash pipeline and is driven and connected to the plurality of first air valves to drive the water in the backwash pipeline to flow toward the feeding hole and to control the opening and closing of the plurality of first air valves.

9. The gravity cage according to claim 1, wherein: The feeding device also includes: A support ring, wherein the outer peripheral side surface of the support ring is fixedly connected to the upper circumference of the floating device to form a through hole with an axis parallel to the horizontal plane, and the feed pipe is passed through the through hole; Wherein, the support ring and the lower end of the feeding tube are staggered.

10. The gravity cage according to claim 1, wherein: The gravity cage also includes: The blocking member is arranged in the feeding tube and is located between the feeding hole and the lower end of the feeding tube to prevent feed from accumulating at the lower end of the feeding tube.

Images