Aerodynamic feeding system for aquaculture

Abstract

The present disclosure relates to an air-powered feeding system for aquaculture, comprising: a power mechanism comprising an air compressor and a flow divider at the outlet end of the air compressor, the power mechanism providing high pressure air downstream through the flow divider; a feeding mechanism configured to feed material to a downstream mechanism at a controlled rate; a dispensing mechanism receiving the material from the feeding mechanism, the dispensing mechanism having an adjustable dispensing outlet, the dispensing mechanism adjusting the direction and range of the material through the dispensing outlet. The feeding mechanism, the dispensing mechanism and the flow divider are in communication to receive the high pressure air from the air compressor. The feeding system of the present application allows an operator to adjust the direction and range of the dispensing outlet, suitable for use in aquaculture.

Description

Technical Field

[0001] This disclosure relates to the fields of aquaculture and planting technology, and in particular to a pneumatic feeding system for aquaculture. Background Technology

[0002] Traditional feeding methods in existing aquaculture technologies have many shortcomings. One pressing issue is the inability to precisely and safely control the feeding range over long distances. Feeding is an essential part of aquaculture; scientific and rational feeding can significantly improve feed conversion rates, reduce waste, thereby lowering feeding costs and increasing aquaculture efficiency. Precise control of feeding amount and frequency ensures sufficient nutrition for aquaculture while avoiding feed waste and water quality deterioration caused by overfeeding.

[0003] To address this issue, many feed dispensing machines have emerged on the market, such as centrifugal feeders and drop feeders. However, they all have some problems during use. For example, traditional centrifugal feeders are easily affected by wind during feed distribution, leading to uneven distribution and resulting in some areas having too much feed while others have too little. Drop feeders can usually only deliver feed to a relatively short distance, making them unsuitable for large-scale farming environments. Furthermore, their high operating noise and limited feed types restrict their large-scale use.

[0004] Therefore, a new type of feeding system is urgently needed. Summary of the Invention

[0005] In view of the above-mentioned status quo of feeding systems based on existing technologies, one of the objectives of this disclosure is to provide a pneumatic feeding system for aquaculture that can deliver materials with relatively high precision.

[0006] This objective is achieved by disclosing a pneumatic feeding system for aquaculture, which comprises: A power mechanism, comprising an air compressor and a distributor located at the outlet end of the air compressor, wherein the power mechanism provides high-pressure air as a power source to downstream via the distributor; A feeding mechanism configured to deliver material to a downstream mechanism at a controlled rate. The feeding mechanism receives material from the feeding mechanism. The feeding mechanism has an adjustable feeding port, through which the feeding direction and range of the material are adjusted. The feeding mechanism and the feeding mechanism are connected to the distributor to receive the high-pressure air from the air compressor.

[0007] Preferably, the feeding mechanism includes an outer blade group and an inner blade group that can be synchronously adjusted, wherein the outer blade group includes a plurality of outer blades arranged in different circumferential directions and forming a first annular wall, the inner blade group includes a plurality of inner blades arranged in different circumferential directions and forming a second annular wall, and the feeding port is defined by the first annular wall and the second annular wall.

[0008] Preferably, the feeding mechanism includes a directional adjustment component for adjusting the direction of the feeding port. The directional adjustment component includes a telescopic rod, a first hinge rod, and a second hinge rod. The two ends of the first hinge rod are respectively hinged to the outer blade and the telescopic rod. The second hinge rod is respectively hinged to the outer blade and the inner blade at the same circumferential position. The telescopic rod can actuate the first hinge rod through telescopic movement, thereby synchronously adjusting the direction of the outer blade group and the inner blade group.

[0009] Preferably, the telescopic rod is located below the second annular wall, and the inner blade is formed with a clearance hole for avoiding the first hinge rod. The telescopic rod is actuated by a pneumatic cylinder and sequentially drives the first hinge rod, the outer blade, the second hinge rod, and the inner blade to move together.

[0010] Preferably, the first annular wall and the second annular wall define the dispensing port in a funnel shape.

[0011] Preferably, the feeding mechanism includes a feeding machine housing fixed to the end of the feeding pipe connecting the feeding mechanism and the feeding mechanism. The feeding machine housing is trumpet-shaped, and the upper end of the outer blade is hinged and fixed to the feeding machine housing.

[0012] Preferably, the feeding mechanism includes a blade shaft located inside the feeding machine housing, and the upper end of the inner blade is hinged and fixed to the blade shaft.

[0013] Preferably, the axial direction of the blade shaft is coaxial with the telescopic direction of the telescopic rod.

[0014] Preferably, during the orientation adjustment process of the outer blade group, adjacent outer blades are always partially in contact with each other in the circumferential direction.

[0015] Preferably, the inner blades and the outer blades are arranged in pairs in the circumferential direction, and the first hinge rod and the second hinge rod corresponding to the same pair of inner blades and outer blades are located at the same circumferential position.

[0016] Based on common knowledge in the field, the above-mentioned preferred embodiments can be combined arbitrarily to obtain various preferred examples of this disclosure.

[0017] The feeding port of the pneumatic feeding system for aquaculture disclosed herein is defined by a combination of blades with directional properties, enabling directional and uniform feeding. Furthermore, because the material is fed by high-pressure air, the feeding system can deliver the material over a greater distance in a relatively quiet manner, allowing the feeding location to be set at a more distant point. Attached Figure Description

[0018] To better understand the above and other objects, features, advantages, and functions of this disclosure, reference can be made to the preferred embodiments shown in the accompanying drawings. Like reference numerals in the drawings refer to like parts. Those skilled in the art should understand that the drawings are intended to schematically illustrate preferred embodiments of this disclosure and are not intended to limit the scope of this disclosure; the parts in the drawings are not drawn to scale.

[0019] Figure 1 This is a schematic diagram of the overall structure of a pneumatic feeding system for aquaculture according to a preferred embodiment of the present disclosure; Figure 2 This is a schematic diagram of the feeding mechanism according to a preferred embodiment of the present disclosure; Figure 3-7 This is a schematic diagram of the feeding mechanism according to a preferred embodiment of the present disclosure, wherein... Figure 3-7 Show the feeding mechanism from different perspectives; Figure 8 This is a cross-sectional schematic diagram of the feeding mechanism; Figure 9 This is a simplified diagram showing the different states of the feeding mechanism. Detailed Implementation

[0020] The present disclosure will now be described in detail with reference to the accompanying drawings. The embodiments described herein are merely preferred embodiments based on the present disclosure; those skilled in the art can conceive of other ways to implement the present disclosure based on these preferred embodiments, and such other ways also fall within the scope of the present disclosure. In the following detailed description, directional terms such as “up,” “down,” “inner,” “outer,” “longitudinal,” and “transverse” are used with reference to the directions described in the accompanying drawings. Components of embodiments of the present disclosure can be placed in various different orientations; the directional terms are for illustrative purposes and not restrictive.

[0021] In this disclosure, the feeding system 1 is suitable for situations where materials (such as feed, seeds, etc.) need to be fed over a large area, and is especially suitable for aquaculture operations.

[0022] Figure 1 The overall structure of the aquaculture pneumatic feeding system 1 is shown; Figure 2 The overall structure of the feeding mechanism 20 of the aquaculture pneumatic feeding system 1 is shown; Figure 3The overall structure of the feeding mechanism 30 of the aquaculture pneumatic feeding system 1 is shown.

[0023] See Figure 1-3 The aquaculture pneumatic feeding system 1 includes a power mechanism 10, a feeding mechanism 20, and a dispensing mechanism 30, pipelines between the mechanisms 10, 20, and 30, valves 13, 14, and 15 on each section of the pipeline, and a control system (not shown). The power mechanism 10 of the pneumatic feeding mechanism 30 includes an air compressor 11 and a distributor 12 located at the outlet end of the air compressor 11. The power mechanism 10 provides high-pressure air to the downstream mechanisms 10, 20, and 30 through the distributor 12, providing them with power. Figure 1 In the example, the distributor 12 has at least three air outlets to split the high-pressure air into at least three paths. Specifically, the first outlet of the distributor 12 provides power to the feeding mechanism 20 through the pneumatic motor air supply line P1, the second outlet provides power to the material being fed through the feeding line P2, and the third outlet provides power to the control mechanism (specifically the pneumatic cylinder 43, detailed below) of the feeding mechanism 30 through the pneumatic cylinder air supply line P3.

[0024] Figure 1 , 2 The feeding mechanism 20 shown is configured to deliver material to a downstream mechanism at a controlled speed. The feeding mechanism 20 consists of a hopper 21, a hopper support 22, a pneumatic motor 23, and a star-shaped discharge valve 24. The hopper 21 has a bucket-shaped structure and can hold a large amount of material to be fed. If necessary, the aquaculture pneumatic feeding system 1 can be equipped with an additional feed pipe (not shown) to the inlet of the hopper 21 to continuously deliver material to the hopper 21. The hopper support 22 supports the hopper 21 and other components of the feeding mechanism 20. In this embodiment, the hopper support 22 is mainly constructed from rod-shaped support arms, support plates, etc., by welding and / or threading, or other known methods. It should be noted that the hopper support 22 can also be any other support structure, which will not be described further here.

[0025] The pneumatic motor 23 is powered by high-pressure air supplied by the air compressor 11 through pipeline P1. The pneumatic motor 23 drives the rotary valve 24. The rotational speed of the pneumatic motor 23 directly determines the amount of material discharged by the rotary valve 24 each time. In this application, the rotational speed of the pneumatic motor 23 is controlled by the opening degree of the pneumatic motor control valve 13 on the air supply pipeline of the pneumatic motor 23.

[0026] Material in hopper 21 enters feeding pipeline P2 under the action of star-shaped discharge valve 24 driven by pneumatic motor 23. High-pressure air from distributor 12 pushes the material forward in feeding pipeline P2 to feeding mechanism 30. The feeding speed of material in feeding pipeline P2 and feeding mechanism 30 can be controlled by controlling the valve opening of feeding valve 14 in feeding pipeline.

[0027] The feeding mechanism 30 receives material from the feeding mechanism 20. The feeding mechanism 30 has an adjustable feeding port E. The feeding mechanism 30 adjusts the feeding direction and feeding range of the material through the feeding port E.

[0028] As described above, in this application, each power unit is driven by high-pressure air. Specifically, in aquaculture, the feeding mechanism 30, which is relatively close to the water surface, has no electrical unit, thus avoiding any electrical accidents and ensuring worker safety. Furthermore, the feeding pipe P2 in the aquaculture pneumatic feeding system 1 of this application can be lengthened or reduced as needed, making the aquaculture pneumatic feeding system 1 suitable for scenarios with long feeding distances. The directional adjustable feeding port E ensures that the aquaculture pneumatic feeding system 1 accurately projects materials in the correct direction and within the correct range.

[0029] Referring to the relevant figures of the feeding mechanism 30 in 3-8, the feeding port E of the feeding mechanism 30 is jointly defined by an outer blade group 31 and an inner blade group 32 capable of synchronous orientation. The outer blade group 31 includes a plurality of outer blades 31A arranged in different circumferential directions and forming a first annular wall S1. The inner blade group 32 includes a plurality of inner blades 32A arranged in different circumferential directions and forming a second annular wall S2. The first annular wall S1 and the second annular wall S2 define the feeding port E in a trumpet shape.

[0030] See Figure 3 and combined Figure 4 , 8 The feeding mechanism 30 has a feeding machine housing 38 fixed to the end of the feeding pipe P2. The feeding machine housing 38 is trumpet-shaped. The interior of the feeding machine housing 38 is provided with... Figure 8 , 4 Visible feeder blades 36. Feeder blades 36 have blade shafts 36A. The feeder blades 36 are helical blades, and the helical blades have a conical shape in their axial section that matches the feeder housing 38. The helical blades 36 uniformly feed material onto the circumferential inner walls of the feeder housing 38. Preferably, in the axial direction of the feeder blades 36, the outer edges of the helical feeder blades 36 and the inner surface of the feeder housing 38 are spaced at equal intervals to facilitate the uniform distribution of equal amounts of material to be fed to all parts of the circumference of the feeder housing 38 by the feeder blades 36.

[0031] The feeding mechanism 30 has an independent support mechanism 40. Figure 3 In the feeding mechanism 30 shown, the support mechanism 40 consists of several vertically and horizontally overlapping and fixed rod-shaped or plate-shaped support walls 41, and a support plate 42 located below the support mechanism. The support plate 42 is used to strengthen the overall structural strength of the support mechanism. The coverage area of ​​the support plate 42 should be offset from the feeding direction of the feeding port E.

[0032] See Figure 3-8 The upper ends of each outer blade 31A of the outer blade assembly 31 are hinged and fixed to the feeder housing 38. Optionally, the outer blades 31A are hinged and fixed to the lower end of the feeder housing 38. Figure 3-8 In the example, the upper end of the outer blade 31A is fixed to the lower end of the feeder housing 38 by a bearing. With only the support at the lower end of the feeder housing 38, the outer blade 31A will naturally rotate around the feeder housing 38 to a vertical position under the action of gravity.

[0033] See Figure 5 To improve the overall rigidity of the feeding mechanism 30, a support plate 37 is provided at the end of the feeding machine housing 38. The two ends of the support plate 37 are respectively fixed to the lower end of the blade shaft 36A of the feeding machine blade 36 and the end of the feeding machine housing 38. Optionally, the two ends of the support plate 37 are fixed by bearings 44 to provide a certain degree of flexibility while ensuring the overall rigidity of the feeding mechanism 30, thus preventing stress from being generated at the two ends of the support plate 37 due to vibration of the feeding mechanism 30.

[0034] The inner blade assembly 32 is located inside the outer blade assembly 31. Synchronous directional adjustment of the inner blade assembly 32 and the outer blade assembly 31 is performed by a directional assembly consisting of a telescopic rod 33, a first hinge rod 34, and a second hinge rod 35. See also... Figure 4-8 The upper ends of each inner blade 32A of the inner blade assembly 32 are hinged (e.g., hinged via bearings) to the lower end of the blade shaft 36A of the feeder blade 36. More specifically, the lower end of the blade shaft 36A is provided with a […]. Figure 5-8 The disc-shaped tray 39 is shown. The upper end of the inner blade 32A is hinged and fixed to the outer edge of the disc-shaped tray 39 by means of bearings or the like.

[0035] See Figure 4-8 The feeding mechanism 30 is shown from various angles, including the telescopic rod 33, the first hinge rod 34, and the second hinge rod 35 of the aforementioned directional assembly used to adjust the direction of the feeding port E. The first hinge rod 34 is hinged at both ends to the outer blade 31A and the telescopic rod 33, respectively (at the hinge point of the telescopic rod 33...). Figure 4(marked with "A" in the text) The second hinge rod 35 is hinged to the outer blade 31A and the inner blade 32A, which are in the same circumferential position. The telescopic rod 33 can actuate the first hinge rod 34 through telescopic movement, thereby synchronously adjusting the direction of the outer blade group 31 and the inner blade group 32.

[0036] The telescopic rod 33 is positioned below the second annular wall S2 defined by the inner blade assembly 32. Figure 5 The first hinge rod 34 passes through the inner blade 32A and is hinged against the inner surface of the outer blade 31A. Figure 7 , Figure 5-6 To this end, a clearance hole C is formed on the inner blade 32A to allow the first hinge rod 34 to pass. This clearance hole C should be elongated to ensure that the first hinge rod 34 can rotate freely during the reorientation of the inner and outer blades 32A and 31A. The position of the first hinge rod 34 abutting against the outer blade 31A can be approximately at the midpoint of the blade's length direction.

[0037] The hinge points between the two ends of the second hinge rod 35 and the outer blade 31A and the inner blade 32A can be optionally set as the lower end of the outer blade 31A and the lower end of the inner blade 32A, respectively.

[0038] See Figure 5-8 When the telescopic rod 33 is actuated by the pneumatic cylinder 43 to move up and down, the telescopic rod 33 drives the first hinge rod 34 to move synchronously, thereby causing the outer blade 31A to expand outward or retract inward; the outer blade 31A drives the second hinge rod 35 hinged to it, thereby causing the inner blade 32A to expand outward or retract inward synchronously, completing the synchronous action.

[0039] The high-pressure air required for the pneumatic cylinder 43 to actuate the telescopic rod 33 is supplied by the pneumatic cylinder air supply line P3 mentioned above. The extension length of the telescopic rod 33 is controlled by a valve (pneumatic control valve 15) on the pneumatic cylinder air supply line P3. When the valve 15 is opened more, the telescopic rod 33 extends upward, pushing the upper end of the first hinge rod 34 upward; conversely, when the valve is opened less, the outer blade assembly 31 and the inner blade assembly 32 automatically fall under their own weight, forcing the telescopic rod 33 to retract.

[0040] See Figure 9 It shows Figure 3-8The diagram shows a simplified schematic representation of the relative positions of the blades 31A and 32A, and the hinge rods 34 and 35 in the feeding mechanism 30 when the feeding port E is in different orientations. The outer blade 31A, inner blade 32A, first hinge rod 34, and second hinge rod 35 in the same orientation are represented by the same line. Point A corresponds to the hinge point on the disc-shaped tray 39 below the blade shaft 36A, where the inner blade 32A abuts. Point B corresponds to the hinge point on the feeding machine housing 38, where the outer blade 31A abuts. Point D represents the contact point between the first hinge rod 34 and the telescopic rod 33. Figure 9 As shown in the simplified diagram, the second hinge rod 35 can directly indicate the outlet position and direction of the feeding port E. In the first state of the feeding mechanism 30, as indicated by the dashed line, the inner blade assembly 32 and the outer blade assembly 31 hang naturally under their own weight, pressing the telescopic rod 33 to its lowest position in the working stroke, with the feeding port E closest to the center of the feeding machine housing 38. Figure 9 In order to simplify and clearly express the position of each component of the feeding mechanism in each state, as well as the change process of each component during the transition between states, only the hinge rods 34 and 35 in the first state, as well as the inner and outer blades 31A and 32A, are marked.

[0041] See also Figure 9 After the first state, under the pressure of high-pressure air, the telescopic rod 33 moves upward a certain distance, pushing one end of the first hinge rod 34 upward. The feeding mechanism 30 thus changes to the second state, shown by the dashed line composed of equal-length line segments. During the transition from the first to the second state, the feeding port E gradually turns outward, ensuring that the material is fed to a more peripheral area. As the high-pressure air continues to actuate the telescopic rod 33 upward through the pneumatic cylinder, one end of the first hinge rod 34 continues to move upward, and the feeding mechanism 30 changes to the third state, shown by the solid line. In the third state, the feeding port E is oriented towards the outermost edge, and the material is fed to the outermost periphery.

[0042] It should be understood that the description of the movement process from the first state to the third state is only used to illustrate the mechanism of the feeding direction and feeding range of the feeding port E of this application, and does not mean that the state of the feeding mechanism 30 can only be adjusted in this order. Those skilled in the art can understand based on the disclosure of this application that the state of the feeding mechanism 30 can be adjusted arbitrarily.

[0043] See Figure 4As a preferred approach, during the reorientation of the outer blade assembly 31, adjacent outer blades 31A remain partially in contact with each other circumferentially. Specifically, the outer blades 31A of the outer blade assembly 31 are arranged in a manner that progressively overlaps each other circumferentially. That is, one circumferential side of any outer blade 31A is partially covered by the preceding outer blade 31A, while the other circumferential side partially covers the following adjacent outer blade 31A. With this "progressive overlapping circumferentially" arrangement, fewer first hinge rods 34, or even only 1-2 first hinge rods 34, are required to actuate the deployment of all outer blades 31A.

[0044] Similar to the outer blade group 31, during the directional adjustment of the inner blade group 32, adjacent inner blades 32A remain partially in contact with each other in the circumferential direction. Specifically, the individual inner blades 32A of the inner blade group 32 are arranged in a manner that gradually overlaps each other in the circumferential direction. In this case, one or two second hinge rods 35 may even be provided.

[0045] Preferably, inner blades 32A and outer blades 31A are arranged in pairs in the circumferential direction. The first hinge rod 34 and second hinge rod 35 corresponding to the same pair of inner blades 32A and outer blades 31A are located at the same circumferential position. The plane defined by the paired first hinge rods 34 and second hinge rods 35 can be defined as coplanar with the blade axis 36A and the central axis of the telescopic rod 33, which will facilitate the long-term and stable execution of the blade deployment and retraction actions by the feeding system 1. In this case, the aforementioned support plates 37 and the corresponding pairs of first hinge rods 34 and second hinge rods 35 can be placed on the same plane.

[0046] It should be noted that, despite the above Figure 3-9 A specific form of the feeding mechanism 30 has been described; however, based on the concept of this application, those skilled in the art can make other substitutions for the components of the feeding mechanism 30. For example, the pneumatic cylinder 43 driving the first hinge rod 34 can be integrated into the blade shaft 36A. Furthermore, the hinge points of each hinge rod with the corresponding outer blade 31A and inner blade 32A can be adaptively adjusted according to different feeding ranges and feeding directions. Additionally, each hinge rod 34, 35 can be fixed to the corresponding outer blade 31A and inner blade 32A via a slider mechanism. The slider-type hinge method ensures that while adjusting the feeding direction of the feeding port E, the opening size of the feeding port E can also be adjusted, thereby controlling the material speed during feeding.

[0047] exist Figure 3-8 In the example, the upper end of the outer blade 31A is fixed to the feeder housing 38, thereby simplifying the system. Alternatively, it can be fixed to other independent support structures.

[0048] As can be seen from the above description of this application, the feeding mechanism 30 provided in this application has a specific type of feeding port E, which allows operators to adjust the feeding direction and feeding range of the feeding port E. Furthermore, the direction control mechanism of the feeding port E used in this application is operated by high-pressure air, which ensures that the system involved in this application is particularly suitable for aquaculture, where electrical accidents are prone to occur. In addition, the power source in the other main feeding system 1 of this disclosed system is high-pressure air, which is particularly suitable for aquaculture, where electrical accidents are prone to occur. Furthermore, other main mechanisms in the feeding system 1 of this application—such as the feeding mechanism 20—are also controlled by high-pressure air, reducing the use of electrical systems and maximizing system safety.

[0049] The scope of protection of this disclosure is defined only by the claims. Thanks to the teachings of this disclosure, those skilled in the art will readily recognize that alternative structures to the structures disclosed herein can be used as feasible alternative implementations, and that the implementations disclosed herein can be combined to produce new implementations, which also fall within the scope of the appended claims. Attached image description: Feeding system: 1.

[0051] Power mechanism: 10.

[0052] Air compressor: 11.

[0053] Shunt: 12.

[0054] Pneumatic motor control valve: 13.

[0055] Feed valve: 14.

[0056] Pneumatic control valve: 15.

[0057] Feeding mechanism: 20.

[0058] Storage bin: 21.

[0059] hopper support: 22.

[0060] Pneumatic motor: 23.

[0061] Rotary rotary valve: 24.

[0062] Feeding mechanism: 30.

[0063] Outer blade group: 31.

[0064] Outer blade: 31A.

[0065] Inner blade group: 32.

[0066] Inner blades: 32A.

[0067] First annular wall: S1.

[0068] Second annular wall: S2.

[0069] Discharge port: E.

[0070] Telescopic pole: 33.

[0071] First hinge rod: 34.

[0072] Second hinge rod: 35.

[0073] Feeder blades: 36.

[0074] Blade shaft: 36A.

[0075] Support plate: 37.

[0076] Feeder housing: 38.

[0077] Pallet: 39.

[0078] Supporting institutions: 40.

[0079] Support arm: 41.

[0080] Support plate: 42.

[0081] Pneumatic cylinder: 43.

[0082] Bearing: 44.

Claims

1. A pneumatic feeding system for aquaculture, the pneumatic feeding system for aquaculture comprising: A power mechanism, comprising an air compressor and a distributor located at the outlet end of the air compressor, wherein the power mechanism provides high-pressure air as a power source to downstream via the distributor; A feeding mechanism configured to deliver material at a controlled rate to a downstream mechanism, and A feeding mechanism receives material from a feeding mechanism. The feeding mechanism has an adjustable feeding port, which is annular. The feeding mechanism adjusts the feeding direction and range of the material through the feeding port. The feeding mechanism includes a feeding machine housing fixed to the end of a feeding pipe connecting the feeding mechanism and the feeding mechanism. The feeding machine housing has spiral feeding blades inside to evenly feed the material onto the circumferential inner walls of the feeding machine housing. The feeding mechanism includes an outer blade group and an inner blade group capable of synchronous adjustment, and a direction-adjusting component for adjusting the direction of the feeding port. The outer blade group includes blades arranged in different circumferential directions. The system comprises multiple outer blades arranged in a partially overlapping manner to form a first annular wall, and multiple inner blades arranged in different circumferential positions to form a second annular wall. The delivery port is defined by both the first and second annular walls. The orientation adjustment assembly includes a telescopic rod, a first hinge rod, and a second hinge rod. The two ends of the first hinge rod are respectively hinged to the outer blades and the telescopic rod. The second hinge rod is respectively hinged to the outer blades and the inner blades located in the same circumferential position. The telescopic rod can actuate the first hinge rod through telescopic movement, thereby synchronously adjusting the orientation of the outer blade group and the inner blade group. The feeding mechanism and the dispensing mechanism are connected to the distributor to receive the high-pressure air from the air compressor. The inner wall of the dispensing machine housing is oriented toward the dispensing port, and the directional assembly is configured such that the dispensing port can be oriented to different directions while maintaining a constant opening size, wherein the opening size is determined by the length of the second hinge rod.

2. The aquaculture pneumatic feeding system according to claim 1, wherein, The telescopic rod is located below the second annular wall. The inner blade has a clearance hole for avoiding the first hinge rod. The telescopic rod is actuated by a pneumatic cylinder and sequentially drives the first hinge rod, the outer blade, the second hinge rod, and the inner blade to move together.

3. The aquaculture pneumatic feeding system according to claim 1, wherein, The first annular wall and the second annular wall define the delivery port in a funnel shape.

4. The aquaculture pneumatic feeding system according to any one of claims 1-3, wherein, The feeding mechanism includes a feeding machine housing fixed to the end of the feeding pipe connecting the feeding mechanism and the feeding mechanism. The feeding machine housing is trumpet-shaped, and the upper end of the outer blade is hinged and fixed to the feeding machine housing.

5. The aquaculture pneumatic feeding system according to claim 4, wherein, The feeding mechanism includes a blade shaft located inside the feeding machine housing, and the upper end of the inner blade is hinged and fixed to the blade shaft.

6. The aquaculture pneumatic feeding system according to claim 5, wherein, The axial direction of the blade shaft is coaxial with the extension and retraction direction of the telescopic rod.

7. The aquaculture pneumatic feeding system according to any one of claims 1-3, wherein, During the directional adjustment of the outer blade assembly, adjacent outer blades remain partially in contact with each other in the circumferential direction.

8. The aquaculture pneumatic feeding system according to claim 4, wherein, In the circumferential direction, the inner blades and the outer blades are arranged in pairs, and the first hinge rod and the second hinge rod corresponding to the same pair of inner blades and outer blades are located at the same circumferential position.

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