One-out-many feeding structure

Abstract

The utility model discloses a one -out -of -many feeding structure relates to fish pond feeding equipment technical field, including the branch pipe body, the front end of branch pipe body is provided with a air inlet, and the back end has a plurality of air outlet pipes in parallel, the lateral wall of every air outlet pipe is provided with the feed inlet, and the feed enters the air outlet pipe from the feed inlet. After adopting above -mentioned structure, through the structural design of the branch pipe body and the parallel multiple air outlet pipes, the feed enters the air outlet pipe from the feed inlet, and the wind force is dispersed into multiple air outlet pipes, and every air outlet pipe is connected with a set of rotary material distributing device, and it is not necessary to set up the air -sending system for every rotary material distributing device alone, which greatly reduces the equipment purchase cost, the installation cost and the subsequent maintenance cost, and is especially suitable for the breeding demand of large -area fish pond.

Description

Technical Field

[0001] This utility model relates to the technical field of fishpond feeding equipment, and in particular to a one-outlet-multiple-feeding structure. Background Technology

[0002] In artificial fishpond aquaculture, regularly feeding the fish is crucial for their healthy growth. Currently, most fishponds use manual feeding, requiring staff to row to the pond and distribute the feed from the boat. This method has several drawbacks. Firstly, it increases the workload for staff, especially in large-scale aquaculture ponds where frequent rowing and feeding operations are extremely demanding. Secondly, manual feeding makes it difficult to ensure even distribution of feed throughout the pond; excessive feed in some areas can lead to water pollution and feed waste, while insufficient feed in others can negatively impact fish growth and development.

[0003] To address these issues, a rotary feed spreader has emerged on the market. Installed in fishponds, this device uses a pneumatic conveying system to deliver feed to the spreader, achieving automatic rotary spreading. However, as aquaculture scales expand and fishpond areas increase, multiple rotary feed spreaders are needed to ensure even feed coverage. Current technology requires each spreader to have its own independent pneumatic conveying system, significantly increasing aquaculture costs, including equipment purchase, installation, and maintenance. Utility Model Content

[0004] The purpose of this invention is to provide a multi-feeding structure that distributes airflow into multiple air outlet pipes, with each outlet pipe connected to a rotating feed spreading device. This avoids the need to set up a separate air delivery system for each rotating feed spreading device, effectively reducing breeding costs.

[0005] To achieve the above objectives, this utility model provides a multi-feeding structure with a single outlet, including a distribution pipe body. The front end of the distribution pipe body is provided with an air inlet, and the rear end is connected in parallel with multiple outlet pipes. Each outlet pipe has a feed inlet on its side wall, and the feed enters the outlet pipe from the feed inlet.

[0006] With the above structure, through the design of a single air distribution pipe body connected to multiple air outlet pipes, the feed enters the air outlet pipe from the feed inlet, and the air force is distributed to multiple air outlet pipes. Each air outlet pipe is connected to a set of rotary spreading devices. There is no need to set up a separate air delivery system for each rotary spreading device, which greatly reduces the equipment purchase cost, installation cost and subsequent maintenance cost. It is especially suitable for the aquaculture needs of large-area fish ponds.

[0007] Preferably, the air outlet duct includes a mixing chamber and a diffusion chamber arranged sequentially from front to back; a nozzle is provided at the front end of the mixing chamber, and a throat is provided at its rear end directly opposite the nozzle; the diameter of the throat is smaller than the diameter of the mixing chamber; a feed inlet is provided at the top of the mixing chamber; the diffusion chamber includes a gradually expanding section and an outlet section arranged sequentially from front to back; the cross-sectional area of ​​the gradually expanding section increases along the flow direction and extends to the outlet section. This structure utilizes the rapid increase in velocity of compressed air as it passes through the nozzle to create a low-pressure zone, generating a suction effect that draws feed into the mixing chamber through the feed inlet. The air and feed mix to form a secondary fluid. The two fluids mix thoroughly at the narrow throat, and momentum exchange allows the secondary fluid to gain kinetic energy; the cross-sectional area of ​​the gradually expanding section of the diffusion chamber increases along the flow direction and extends to the outlet section. After the secondary fluid enters the gradually expanding section, its velocity decreases, and its kinetic energy is converted back into pressure energy, ultimately being discharged at medium to high pressure, thus realizing feed delivery and feeding while avoiding feed blockage.

[0008] Preferably, a constriction section is provided at the front end of the throat in the mixing chamber. The constriction section has a conical structure with a cross-sectional area that decreases along the flow direction. Through this structural design, the fluid being drawn in is accelerated in the constriction section, mixing better with the nozzle jet, improving mixing efficiency, and enhancing the airflow's ability to draw and transport feed.

[0009] Preferably, the nozzle extends rearward to the rear of the feed inlet. This structural design prevents the feed from impacting the airflow emitted from the nozzle, while the air creates a suction effect on the feed, avoiding airflow turbulence caused by the feed falling and impacting the airflow. Simultaneously, the conical structure of the nozzle guides and accelerates the airflow.

[0010] Preferably, the outer walls of the multiple air outlet pipes are interconnected; the multiple feed pipes are interconnected. This connection method can enhance the stability and strength of the entire structure, reduce swaying and deformation caused by airflow impact and vibration, and ensure the normal operation of the air outlet pipes.

[0011] Preferably, the feed inlet is equipped with a feed pipe that extends upwards at an angle from back to front. The upward-angled feed pipe design utilizes the gravity of the feed to make it easier for the feed to enter the feed inlet, while preventing the feed from accumulating inside the feed pipe and ensuring smooth feed delivery.

[0012] Preferably, there are three air outlet ducts.

[0013] Preferably, the main body of the air distribution duct is a circular pipe structure, and its rear end is transformed into an elliptical pipe opening through a diameter-changing structure; the diameter-changing structure is a smooth transition, gradually changing the circular cross-section into an elliptical cross-section; multiple air outlet ducts are horizontally connected in parallel on the elliptical pipe opening.

[0014] Preferably, the convergence angle of the contraction segment is 12°-30°; and the diffusion angle of the expansion segment is 5°-15°.

[0015] Preferably, the air duct body and the air outlet duct are integrated into one structure.

[0016] After adopting the above technical solution, the beneficial effects of this utility model are:

[0017] This invention, a multi-feeding structure, solves the technical problem in the prior art where each rotary feeder needs to be equipped with an independent air delivery system, which increases the cost of breeding. This invention distributes the air force into multiple air outlet pipes, with each air outlet pipe connected to a rotary feeder, thereby avoiding the need to set up a separate air delivery system for each rotary feeder and effectively reducing breeding costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the installation structure of a multi-feeding structure according to the present invention;

[0019] Figure 2 yes Figure 1 A schematic diagram of a multi-feeding structure for one feeder in this utility model.

[0020] Figure 3 yes Figure 2 Top view;

[0021] Figure 4 yes Figure 3 View from AA direction;

[0022] Figure 5 yes Figure 3 The left view;

[0023] Figure 6 yes Figure 4 BB view.

[0024] In the diagram, 1 is the main body of the air duct, 11 is the air inlet, 2 is the air outlet, 21 is the nozzle, 211 is the feed inlet, 213 is the feed pipe, 22 is the contraction section, 23 is the throat, 24 is the expansion section, and 25 is the outlet section. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] The orientations mentioned in this specification are based on the orientation of the multi-feeding structure of this utility model when it is working normally. They do not limit the orientation during storage and transportation, and only represent relative positional relationships, not absolute positional relationships.

[0027] like Figure 1 and Figure 2As shown, a multi-feeding structure with one outlet is installed between the bottom of the feed hopper and the air conveying system. It includes a distribution duct body 1, with an air inlet 11 at its front end and multiple outlet ducts 2 connected in parallel at its rear end. Each outlet duct 2 has a feed inlet 211 on its side wall. Feed enters the outlet duct 2 through the feed inlet 211. To facilitate feed entry, the feed inlet 211 is positioned upwards, allowing feed to enter by gravity. Alternatively, the feed inlet 211 can be positioned downwards, allowing feed to be drawn in through negative pressure (as described below). Preferably, the feed inlet 211 is positioned upwards. In this embodiment, three outlet ducts 2 are provided, which can meet the feeding needs of most medium-sized fishponds while balancing structural complexity and cost. Of course, the number of outlet ducts 2 can be appropriately increased or decreased according to the actual fishpond area and aquaculture needs, and the air intake of the air inlet 11 can be adjusted. The air inlet 11 is connected to the air delivery system, which supplies air to it; each air outlet 2 is connected to a rotating material spreading device. The air distribution duct body 1 and the air outlet duct 2 are an integral structure, which can be formed by aluminum alloy casting, segmented welding and polishing, or other forming methods.

[0028] In this embodiment, the main body 1 of the air distribution duct is a circular pipe structure, and its rear end is transformed into an elliptical pipe opening through a diameter-changing structure. The diameter-changing structure is a smooth transition, gradually changing the circular cross-section into an elliptical cross-section. Multiple air outlet pipes 2 are horizontally connected in parallel on the elliptical pipe opening. The circular pipe structure of the air distribution duct body 1 can reduce the airflow resistance in the duct and improve the air intake efficiency. After the diameter is changed to an elliptical pipe opening, the airflow can be more rationally distributed to the multiple air outlet pipes 2, so that each air outlet pipe 2 receives a relatively uniform air force, ensuring that the working effect of each rotating material spreading device is consistent.

[0029] like Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, the air outlet duct 2 includes a mixing chamber and a diffusion chamber arranged sequentially from front to back, forming a Venturi tube structure. A nozzle 21 is located at the front end of the mixing chamber, and a throat 23 is located at its rear end, directly opposite the nozzle 21. The axis of the nozzle 21 must coincide with the center of the throat 23 to avoid flow deviation and efficiency reduction. The diameter of the throat 23 is smaller than the diameter of the mixing chamber, and the outlet diameter of the nozzle 21 is slightly smaller than the diameter of the throat 23 to ensure that the jet can effectively entrain secondary fluid. A feed inlet 211 is located at the top of the mixing chamber, and the feed inlet 211 is connected to the discharge port at the bottom of the feed hopper for introducing feed into the air outlet duct 2.

[0030] In this embodiment, as Figure 4 and Figure 5As shown, nozzle 21 has a conical structure that extends rearward to the rear of feed inlet 211. This positioning prevents falling feed from impacting the airflow from nozzle 21, while the air creates a suction effect on the feed, avoiding turbulence caused by the falling feed impacting the airflow. The conical structure of nozzle 21 also guides and accelerates the airflow.

[0031] The diffusion chamber includes a diffuser section 24 and an outlet section 25 arranged sequentially from front to back; the cross-sectional area of ​​the diffuser section 24 increases along the flow direction and extends to the outlet section 25.

[0032] When compressed air passes through nozzle 21, its cross-sectional area decreases, and its velocity increases sharply (Bernoulli's principle), converting pressure energy into kinetic energy and forming a high-speed jet that is injected into the mixing chamber. Due to the viscosity between the jet and the air, it carries away the surrounding air to form a low-pressure zone, thereby creating a certain suction that draws the feed into the mixing chamber through inlet 211. The air and feed mix to form a secondary fluid. The two fluids mix thoroughly at the narrow throat 23, and momentum exchange allows the secondary fluid to gain kinetic energy. After entering the diffuser section 24, the velocity of the secondary fluid decreases, and the kinetic energy is converted back into pressure energy (diffusion pressurization effect), eventually being discharged at medium to high pressure.

[0033] Furthermore, a constriction section 22 is provided at the front end of the throat 23 on the mixing chamber. The constriction section 22 has a conical structure and its cross-sectional area decreases along the flow direction. The fluid being drawn in is accelerated in the constriction section 22 and mixed with the jet from the nozzle 21.

[0034] To further optimize the performance of the outlet duct 2, the convergence angle of the contraction section 22 is 12°-30°, preferably 23° in this embodiment; the diffusion angle of the expansion section 24 is 5°-15°, preferably 8° in this embodiment. Wind tunnel testing verified that when the convergence angle is <12°, airflow acceleration is insufficient, and >30° easily generates separation vortices; a diffusion angle <5° leads to slow pressure recovery, and >15° causes airflow stripping. Within the preferred angle range, the airflow can achieve a good acceleration, dispersion, and deceleration process within the outlet duct 2, ensuring feed conveying efficiency while avoiding problems such as airflow turbulence and feed blockage caused by excessively large or small angles.

[0035] The outer walls of multiple air outlet ducts 2 are interconnected. This connection method enhances the stability and strength of the entire structure, reduces swaying and deformation caused by airflow impact and vibration, and ensures the normal operation of the air outlet ducts 2.

[0036] A feed pipe 213 is provided on the feed inlet 211, and the feed pipe 213 extends upward at an angle from back to front. The upward angled feed pipe 213 design utilizes the gravity of the feed to make it easier for the feed to enter the feed inlet 211, while preventing feed from accumulating inside the feed pipe 213 and ensuring smooth feed delivery. Multiple feed pipes 213 are interconnected, which facilitates unified management and control of feed input, and also enhances the overall structural integrity.

[0037] This utility model uses a structural design of a single air distribution pipe body 1 connected to multiple air outlet pipes 2 in parallel to disperse air force into multiple air outlet pipes 2. Each air outlet pipe 2 is connected to a set of rotary spreading devices, eliminating the need to set up a separate air delivery system for each rotary spreading device, which greatly reduces the equipment purchase cost, installation cost and subsequent maintenance cost, and is especially suitable for the aquaculture needs of large-area fish ponds.

[0038] The air outlet duct 2 adopts a Venturi tube structure design, which enables stable and uniform airflow within the duct, thus evenly delivering feed to each rotary feeder. The rotary feeders then evenly spray the feed across the fishpond, avoiding the uneven feeding problems associated with manual feeding and promoting healthy fish growth. This device achieves automatic feed delivery and feeding, reducing manual intervention and improving aquaculture efficiency. Farmers only need to add feed at the feed inlet 211, and the airflow automatically completes the feed delivery and feeding process, significantly reducing labor intensity.

[0039] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A multi-feeding structure, characterized in that: It includes a duct body, the front end of which is provided with an air inlet, and the rear end of which is connected in parallel with multiple air outlets. Each of the air outlet pipes has a feed inlet on its side wall, through which feed enters the air outlet pipe.

2. The multi-feeding structure according to claim 1, characterized in that: The air outlet duct includes a mixing chamber and a diffusion chamber arranged sequentially from front to back; The mixing chamber has a nozzle at its front end and a throat at its rear end, directly opposite the nozzle; the diameter of the throat is smaller than the diameter of the mixing chamber; and a feed inlet is located at the top of the mixing chamber. The diffusion chamber includes a gradually expanding section and an outlet section arranged sequentially from front to back; the cross-sectional area of ​​the gradually expanding section increases along the flow direction and extends to the outlet section.

3. The multi-feeding structure according to claim 2, characterized in that: A constriction section is provided on the mixing chamber at the front end of the throat. The constriction section has a conical structure and its cross-sectional area decreases along the flow direction.

4. The multi-feeding structure according to claim 2, characterized in that: The nozzle extends rearward to the rear of the feed inlet.

5. The multi-feeding structure according to claim 1, characterized in that: The feed inlet is provided with a feed pipe, which extends upward at an angle from back to front.

6. The multi-feeding structure according to claim 5, characterized in that: The outer walls of the multiple air outlet pipes are interconnected; the multiple feed pipes are interconnected.

7. The multi-feeding structure according to claim 1, characterized in that: The air outlet duct has three sections.

8. The multi-feeding structure according to claim 1, characterized in that: The main body of the air distribution duct is a circular tube structure, and its rear end is transformed into an elliptical duct opening through a diameter-changing structure; the diameter-changing structure is a smooth transition; multiple air outlet ducts are horizontally connected in parallel on the elliptical duct opening.

9. The multi-feeding structure according to claim 3, characterized in that: The convergence angle of the contraction segment is 12°-30°; the diffusion angle of the expansion segment is 5°-15°.

10. The multi-feeding structure according to claim 1, characterized in that: The air distribution duct body and the air outlet duct are an integral structure.

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