Feeding structure capable of uniformly discharging materials at one time

Abstract

The invention discloses a one-outlet multi-feeding structure capable of uniformly discharging, and relates to the technical field of fishpond feeding equipment, the one-outlet multi-feeding structure comprises a charging basket, an air conveying system, an air distribution system and a feeding pipe; the feed barrel is used for storing feed, and a discharge port is formed in the bottom; the air supply system comprises a fan and an air supply pipe which are connected in sequence; the air distribution system is connected among the discharge port, the air supply pipe and the feeding pipe; the air distribution pipe comprises an air distribution pipe body, an air inlet is formed in the front end of the air distribution pipe body, and a plurality of air outlet pipes are connected to the rear end of the air distribution pipe body in parallel. The air inlet is connected with an air conveying system; each air outlet pipe is connected with a feeding pipe; a feeding hole is further formed in the side wall of the air outlet pipe, and feed enters the air outlet pipe from the feeding hole; and one feeding pipe is connected with one rotary scattering device. Through the structural design that one air distribution pipe body is connected with a plurality of air outlet pipes in parallel, the equipment purchase cost, the installation cost and the follow-up maintenance cost are greatly reduced, the air distribution pipe is particularly suitable for the breeding requirement of a large-area fish pond, and multi-position simultaneous uniform feeding can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of fish pond feeding equipment, in particular to a one-outlet multi-feeding structure with uniform material discharge. Background Art

[0002] In artificial pond farming, regularly feeding the fish is crucial for ensuring their healthy growth. Currently, most fish ponds employ manual feeding, requiring operators to row boats to the ponds and distribute the feed from the boats. This approach has numerous drawbacks. On the one hand, it increases the operator's workload, particularly in large-scale fish ponds, where frequent rowing and feeding operations make the work extremely arduous. On the other hand, manual feeding makes it difficult to ensure even distribution of feed throughout the pond. Overfeeding in some areas can easily lead to water pollution and feed waste, while underfeeding in others can affect the growth and development of the fish.

[0003] To address these issues, a rotary feed spreading device has emerged on the market. Installed in fish ponds, this device uses a pneumatic system to deliver feed to the device, enabling automatic rotary feeding. However, as aquaculture continues to expand, the area of ​​fish ponds has gradually increased. To ensure even coverage of feed throughout the pond, rotary feed spreading devices need to be installed at multiple locations. Existing technical solutions require each rotary feed spreading device to be equipped with an independent pneumatic system, which significantly increases aquaculture costs, including equipment purchase, installation, and subsequent maintenance costs. Summary of the Invention

[0004] The purpose of the present invention is to provide a one-outlet, multiple-feeding structure with uniform discharge. By dispersing the wind force into multiple air outlet pipes, each air outlet pipe is connected to a set of rotary spreading devices, thereby avoiding the need to set up a separate air delivery system for each rotary spreading device, and effectively reducing the breeding cost.

[0005] In order to achieve the above object, the technical solution of the present invention is:

[0006] A one-outlet, multiple-feeding structure with uniform discharge comprises a feed barrel, an air delivery system, an air distribution system and a feed pipe; the feed barrel is used to store feed, and a discharge port is provided at the bottom of the feed barrel; the air delivery system comprises a blower and an air supply pipe connected in sequence; the air distribution system is connected between the discharge port, the air supply pipe and the feed pipe; the feed barrel comprises an air distribution pipe body; an air inlet is provided at the front end of the air distribution pipe body, and a plurality of air outlet pipes are connected in parallel at the rear end thereof; the air inlet is connected to the air delivery system; each air outlet pipe is connected to a feed pipe; a feed port is also provided on the side wall of the air outlet pipe, and feed enters the air outlet pipe from the feed port; and a feed pipe is connected to a rotary spreading device.

[0007] After adopting the above structure, the wind force is dispersed to multiple outlet pipes through the structural design of one air distribution pipe body in parallel with multiple outlet pipes. Each 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 breeding needs of large-scale fish ponds and can achieve uniform feeding at multiple locations at the same time.

[0008] Preferably, the air outlet duct includes a mixing chamber and a diffusion chamber arranged in sequence from front to back; a nozzle is provided at the front end of the mixing chamber, and a throat is provided at the rear end thereof opposite the nozzle; the diameter of the throat is smaller than the diameter of the mixing chamber; a contraction section is provided on the mixing chamber at the front end of the throat, and the contraction section is a conical structure, and its cross-sectional area decreases along the flow direction; the feed inlet is provided at the top of the mixing chamber; the diffusion chamber includes a gradually expanding section and an outlet section arranged in sequence from front to back; the cross-sectional area of ​​the gradually expanding section increases along the flow direction and extends to the outlet section. The air outlet duct adopts a Venturi tube structure design, and the airflow forms a low-pressure area at the throat, thereby sucking the feed, achieving mixing of the airflow and the feed, and forming a stable and uniform flow of the airflow in the pipe, thereby evenly transporting the feed to each rotary spreading device, and spraying the feed evenly in the fish pond through the rotary spreading device, avoiding the problem of uneven artificial feeding and being beneficial to the healthy growth of fish.

[0009] Preferably, the nozzle has a conical structure and extends backward to the rear of the feed inlet. This structure guides and accelerates the airflow, creating a negative pressure in the mixing chamber according to the Bernoulli principle, ensuring that the feed falls in an orderly manner due to suction. At the same time, the feed entry point is located behind the nozzle, which does not disrupt the airflow ejected by the nozzle, avoiding airflow turbulence and ensuring stable feed delivery.

[0010] Preferably, a distributing device is installed on the discharge port, and the distributing device includes a shell, an opening is provided at the upper end of the shell, and the opening is fixed on the discharge port for receiving the feed in the barrel; a plurality of distributing pipes are connected in parallel at the lower end; a distributing pipe is inserted into a feed port; a distributing device is rotatably installed between the opening and the distributing pipe; the distributing device includes a rotating shaft rotatably installed on the shell, a distributing piece fixed on the rotating shaft, and a driving device for driving the rotating shaft to rotate; the distributing piece rotates, driving the feed above to fall in an orderly manner and fall into the corresponding distributing pipe. The distributing device is installed at the discharge port, and the rotation of the distributing device drives the feed above to fall in an orderly manner and fall into the corresponding distributing pipe. It can accurately control the falling direction and flow rate of the feed, so that the feed is more evenly distributed to each outlet pipe, further improving the uniformity of feeding.

[0011] Preferably, the area between the stirring device and the distribution pipe in the shell is separated into multiple chambers by a partition plate, the multiple chambers are evenly arranged along the axial direction of the rotating shaft, and a distribution pipe is arranged at the bottom of each chamber. This design makes the distribution of feed more orderly, each chamber works independently and does not interfere with each other, and the amount of feed into each air outlet pipe can be more accurately controlled to ensure the uniformity of feeding.

[0012] Preferably, the air distribution pipe body is a circular tube structure, the rear end thereof is changed into an elliptical pipe opening through a variable-diameter structure, the variable-diameter structure is smoothly transitioned, and multiple air outlet pipes are horizontally connected in parallel on the elliptical pipe opening. The air distribution pipe body is a circular tube structure, which can reduce the resistance of airflow in the pipe and improve the air intake efficiency; the rear end is changed into an elliptical pipe opening through a smoothly transitioned variable-diameter structure, which can more reasonably distribute airflow to multiple air outlet pipes, so that each air outlet pipe obtains relatively uniform air force, and ensures that the feed is uniformly discharged from each air outlet pipe.

[0013] Preferably, a flow meter is installed on each air outlet pipe, and an air volume adjusting device is installed at the air inlet position of the air outlet pipe. The flow meter installed on each air outlet pipe can monitor the flow of the air outlet pipe in real time, the air volume adjusting device is used to adjust the air volume according to the flow condition, the air volume of each air outlet pipe is uniform, and problems such as accumulation of feed due to insufficient air volume or too fast and uneven feeding due to excessive air volume are avoided, thereby improving the feeding effect.

[0014] Preferably, the air volume adjusting device comprises a distribution blade installed in the air distribution pipe body and located between adjacent air outlet pipes; a rotating shaft of the distribution blade is rotatably installed between the two air outlet pipes and can swing between the two air outlet pipes; the distribution blade extends from the rear to the front towards the air inlet direction and guides the air entering from the air inlet direction into the corresponding air outlet pipe; a handle is installed on the central shaft of the distribution blade which penetrates through the air distribution pipe body, and the handle is used to drive the distribution blade to swing. The air volume adjusting device adopts the distribution blade, the handle is used to drive the distribution blade to swing, the air inlet area of a certain air outlet pipe can be covered, and the air entering from the air inlet direction is guided into another air outlet pipe, thereby realizing manual adjustment of the air volume, the structure is simple, the operation is convenient, and the problem of uneven distribution of airflow and powder caused by differences in the resistance of the feeding pipe can be effectively solved.

[0015] Preferably, a rib plate is arranged in the air distribution pipe body corresponding to each air outlet pipe at the front end of the distribution blade, the rib plate separates the inner cavity of the air distribution pipe body into multiple pre-flow cavities, each pre-flow cavity corresponds to an air outlet pipe, and the distribution blade is connected with the rib plate and the air outlet pipe. The inner cavity of the air distribution pipe body is separated into multiple pre-flow cavities by the rib plate, each pre-flow cavity corresponds to an air outlet pipe, the distribution blade is connected with the rib plate and the air outlet pipe, the distribution blade is inserted into different pre-flow cavities by swinging of the rotating distribution blade, and the airflow is guided into different air outlet pipes, thereby more accurately controlling the air inlet amount of each air outlet pipe and improving the accuracy and effectiveness of air volume adjustment.

[0016] Preferably, a first pressure measuring tube is provided at the throat; a second pressure measuring tube is provided at the mixing chamber, and a differential pressure flowmeter is provided between the first and second pressure measuring tubes. The first pressure measuring tube is provided at the throat, the second pressure measuring tube is provided at the mixing chamber, and a differential pressure flowmeter is provided between the two, forming a venturi tube differential pressure flowmeter. This can monitor the airflow pressure and flow in the outlet duct in real time. Based on the monitoring results, the handle is rotated to drive the air distribution blades to swing, adjusting the air volume entering each outlet duct to ensure uniform air volume in each outlet duct, further improving the uniformity and stability of feeding.

[0017] After adopting the above technical solution, the beneficial effects of the present invention are:

[0018] The one-outlet, multi-feeding structure with uniform material discharge of the present invention solves the technical problem in the prior art that a set of rotary spreading devices requires to be equipped with an independent air delivery system, resulting in high equipment cost investment. The present invention disperses the wind force to multiple air outlet pipes through the structural design of a branch air duct body connected in parallel with 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 particularly suitable for the breeding needs of large-scale fish ponds and can achieve uniform feeding at multiple locations at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of a one-outlet, multiple-feeding structure with uniform material discharging according to the present invention;

[0020] Figure 2 yes Figure 1 A schematic diagram of the structure of a one-outlet multi-feeding structure with the protective cover removed;

[0021] Figure 3 yes Figure 2 Side view of;

[0022] Figure 4 It is a structural diagram of the air distribution system in Example 1;

[0023] Figure 5 yes Figure 4 mid-level cross-sectional view;

[0024] Figure 6 yes Figure 5 Middle AA view;

[0025] Figure 7 It is a structural schematic diagram of the material distribution device 5;

[0026] Figure 8 yes Figure 7 Schematic diagram of the structure of the middle material diverter device;

[0027] Figure 9It is a structural diagram of the air distribution system in Example 2;

[0028] Figure 10 yes Figure 9 mid-level cross-sectional view;

[0029] Figure 11 The wind blades rotate at a certain angle. Figure 9 Mid-level cross-sectional view.

[0030] In the figure, 1. material barrel, 11. protective cover, 2. air delivery system, 21. fan, 22. air supply pipe, 3. air distribution system, 31. air distribution pipe body, 311. air inlet, 32. air outlet pipe, 321. nozzle, 322. throat, 323. contraction section, 324. feed port, 325. gradually expanding section, 326. outlet section, 34. air distribution blade, 341. handle, 35. rib, 4. feed pipe, 5. distribution device, 51. shell, 511. opening, 52. distribution pipe, 53. material diverting device, 531. rotating shaft, 532. material diverting piece, 54. partition, 61. first pressure measuring tube, 62. second pressure measuring tube. DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to the accompanying drawings.

[0032] The positions mentioned in this specification are based on the positions of the one-outlet multi-feeding structure with uniform material discharge of the present invention during normal operation, and do not limit the positions during storage and transportation. They only represent relative positional relationships, not absolute positional relationships.

[0033] like Figure 1 、 Figure 2 and Figure 3 As shown together, a one-outlet multi-feeding structure with uniform discharge includes a material barrel 1, an air delivery system 2, an air distribution system 3 and a feeding pipe 4.

[0034] Bucket 1 is used to store feed. It has a conical bottom, a feeding port at the top, and a discharge port at the minimum diameter of the conical bottom. Bucket 1 is fixed to a bucket bracket, which raises it to a certain height to facilitate the installation of the bottom device.

[0035] The air delivery system 2 includes a fan 21 and an air delivery pipe 22 connected in sequence to provide power for feed delivery.

[0036] like Figure 4 、 Figure 5 and Figure 6As shown together, the air distribution system 3 is connected between the discharge port, the air delivery system 2 and the feed pipe 4, and includes an air distribution pipe body 31. An air inlet 311 is provided at the front end of the air distribution pipe body 31, and a plurality of air outlet pipes 32 are connected in parallel at the rear end thereof. In this embodiment, three air outlet pipes 32 are provided, which can meet the feed feeding needs of most medium-sized fish ponds while taking into account the complexity and cost of the structure. Of course, according to the actual fish pond area and breeding needs, the number of air outlet pipes 32 can be appropriately increased or decreased, and the air intake of the air inlet 311 can be adjusted. The air distribution pipe body 31 and the air outlet pipe 32 are an integrated structure, which can be formed by aluminum alloy casting or segmented welding followed by polishing or other molding methods.

[0037] The air inlet 311 is connected to the air delivery system 2, which supplies air. Each outlet pipe 32 has an upward-facing feed port 324 on its sidewall. A feed pipe is installed in each feed port 324, connecting to the outlet. The interconnection of multiple feed pipes facilitates unified management and control of feed delivery, while also enhancing the overall integrity of the structure.

[0038] The feed pipe extends upward from the back to the front, allowing the feed to flow into the air outlet pipe 32 by gravity. A downward-extending protective cover 11 is provided at the bottom of the bucket 1 to protect the air distribution system 3. Each air outlet pipe 32 is connected to a feed pipe 4, which is connected to the rotating material spreading device.

[0039] The present invention adopts a structural design of connecting a plurality of air outlet pipes 32 in parallel with an air distribution pipe body 31, so as to disperse the wind force into the plurality of air outlet pipes 32. Each air outlet pipe 32 is connected to a set of rotary spreading devices. There is no need to set up a separate air delivery system 2 for each rotary spreading device, which greatly reduces the equipment purchase cost, installation cost and subsequent maintenance cost, and is particularly suitable for the breeding needs of large-scale fish ponds.

[0040] Furthermore, the air outlet duct 32 includes a mixing chamber and a diffusion chamber, arranged sequentially from front to back, forming a Venturi tube structure. A nozzle 321 is provided at the front end of the mixing chamber, and a throat 322 is provided at the rear end, facing the nozzle 321. The axis of the nozzle 321 coincides with the center of the throat 322. The diameter of the throat 322 is smaller than the diameter of the mixing chamber, and the outlet diameter of the nozzle 321 is slightly smaller than the diameter of the throat 322. Preferably, the nozzle 321 has a conical structure, which guides and accelerates the airflow. According to Bernoulli's principle, a negative pressure is formed in the mixing chamber, so that the feed falls not only by gravity but also by suction, ensuring the orderly fall of the feed. The nozzle 321 extends backward to the rear of the feed inlet 324, so that the feed enters the rear of the nozzle 321. This does not disrupt the airflow ejected by the nozzle 321, avoiding airflow turbulence.

[0041] A contraction section 323 is provided at the front end of the throat 322 of the mixing chamber. The contraction section 323 is a conical structure, and its cross-sectional area decreases along the flow direction. The convergence angle of the contraction section 323 is 12°-30°, and is preferably 23° in this embodiment. The feed port 324 is provided at the top of the mixing chamber. The diffusion chamber includes a gradually expanding section 325 and an outlet section 326, which are arranged in sequence from front to back. The cross-sectional area of ​​the gradually expanding section 325 increases along the flow direction, and the cross-sectional area of ​​the gradually expanding section 325 increases along the flow direction and extends to the outlet section 326. The diffusion angle of the gradually expanding section 325 is 5°-15°, and is preferably 8° in this embodiment.

[0042] The air outlet pipe 32 adopts a Venturi tube structure design. This design allows the airflow to form a low-pressure area at the throat 322, thereby sucking in the feed and achieving mixing of the two airflows, so that the airflow forms a stable and uniform flow in the pipe, thereby evenly transporting the feed to each rotary spreading device, and the rotary spreading device is used to evenly spray the feed in the fish pond, avoiding the problem of uneven artificial feeding and being beneficial to the healthy growth of fish.

[0043] Furthermore, the air distribution duct body 31 is a circular tube structure, the rear end of which is transformed into an elliptical nozzle through a variable diameter structure. The variable diameter structure is a smooth transition, gradually changing the circular cross-section into an elliptical cross-section. Multiple outlet ducts 32 are horizontally connected in parallel to the elliptical nozzle. The circular tube structure can reduce airflow resistance within the duct and improve air intake efficiency. The variable diameter to the elliptical nozzle can more rationally distribute the airflow to the multiple outlet ducts 32, so that each outlet duct 32 receives relatively uniform wind force. The outer walls of the multiple outlet ducts 32 are interconnected; this connection method enhances the stability and strength of the entire structure, reduces shaking and deformation caused by airflow impact and vibration, and ensures the normal operation of the outlet ducts 32.

[0044] In addition, the feeding structure also has the following optimized designs:

[0045] like Figure 2 、 Figure 7 and Figure 8 As shown, a dispensing device 5 is mounted on the discharge port. The dispensing device 5 comprises a housing 51. An opening 511 is provided at the upper end of the housing 51. The opening 511 is fixed to the discharge port and is used to receive the feed in the feed barrel 1. A plurality of dispensing tubes 52 are connected in parallel at the lower end. Each dispensing tube 52 is inserted into each feed port 324. A dispensing device 53 is rotatably mounted between the opening 511 and the dispensing tube. The dispensing device 53 comprises a rotating shaft 531 rotatably mounted on the housing 51, a dispensing piece 532 fixed to the rotating shaft 531, and a driving device for driving the rotating shaft. The rotation of the dispensing piece 532 causes the feed above to fall in an orderly manner and fall into the corresponding dispensing tube 52.

[0046] Furthermore, in the shell 51 , the area between the material diverting device 53 and the material distribution pipe 52 is divided into multiple chambers by a partition 54 . The multiple chambers are evenly arranged along the axial direction of the rotating shaft 531 , and a material distribution pipe 52 is provided at the bottom of each chamber.

[0047] Airflow conveying: Start the fan 21 of the air delivery system 2, and the compressed air enters the air inlet 311 of the air distribution pipe body 31 through the air supply pipe 22, and is then evenly distributed to each outlet pipe 32. When the compressed air passes through the nozzle 321, the cross-sectional area decreases and the flow rate increases sharply, converting the pressure energy into kinetic energy, forming a high-speed jet that sprays into the mixing chamber. Due to the viscosity between the jet and the air, the surrounding air is entrained to form a low-pressure area, thereby generating a certain amount of suction. Then, the drive device of the distribution device 5 is started, driving the rotating shaft 531 and the prying piece 532 to rotate. The feed falling from the discharge port of the barrel 1 enters each chamber evenly under the action of gravity and suction, and then enters the feed inlet 324 of the outlet pipe 32 through the distribution pipe 52. The air and feed mix to form a secondary fluid. The two fluids are fully mixed in the narrow throat 322, and the momentum exchange causes the secondary fluid to gain kinetic energy. After the secondary fluid enters the gradually expanding section 325 , the flow velocity decreases, and the kinetic energy is converted back into pressure energy, and is finally discharged at a medium-high pressure and transported to the rotary spreading device through the feeding pipe 4 .

[0048] Example 2:

[0049] In actual application of the structure of Example 1, because the fish pond area is relatively large, the distance between each rotating spreading device and this device is different, which leads to different resistance of each feeding pipe 4 in the conveying system, and then causes uneven distribution of airflow and powder (short pipe has large flow, long pipe has small flow or even blockage).

[0050] In order to solve this problem, this embodiment is further improved on the basis of the first embodiment.

[0051] like Figure 9 、 Figure 10 and Figure 11 As shown, each outlet pipe 32 is equipped with a flow meter, and an air volume control device is installed at the air inlet of the outlet pipe 32. The flow meter is used to monitor the flow rate of the outlet pipe 32. According to the flow rate, the air volume control device is adjusted to manually or automatically reduce the opening of the branch with less resistance (usually the shorter feed pipe 4), thereby increasing the local resistance to match the resistance of the longer feed pipe 4.

[0052] In this embodiment, the air volume adjustment device preferably includes an air distribution blade 34 installed within the air distribution duct body 31 and located between adjacent air outlet ducts 32. The air distribution blade 34 has a rotating shaft rotatably installed between the two air outlet ducts 32 and can swing between the two air outlet ducts 32. The air distribution blade 34 extends from the rear to the front toward the air inlet 311. By rotating the air distribution blade 34, the air distribution blade 34 can cover the air inlet area of ​​one air outlet duct 32, thereby directing air entering from the air inlet 311 into another air outlet duct 32. The central axis of the air distribution blade 34 extends through the air distribution duct body 31 and is installed with a handle 341. Rotating the handle 341 drives the air distribution blade 34 to swing. The structure of the handle 341 can refer to the handle structure of a butterfly valve, such as the handle structure disclosed in Chinese Patent CN113404876B.

[0053] Ribs 35 are located within the air distribution duct body 31, at the front end of the air distribution blades 34, corresponding to each outlet duct 32. These ribs 35 divide the interior of the air distribution duct body 31 into multiple pre-flow chambers, each corresponding to an outlet duct 32. The air distribution blades 34 connect the ribs 35 to the outlet ducts 32. By rotating the air distribution blades 34, they are controlled to insert into different pre-flow chambers, directing airflow into different outlet ducts 32.

[0054] If the lengths of the air outlet pipes 32 are the same, the rotating air distribution blades 34 are located between the two air outlet pipes 32 and connect the ribs 35 to the middle position of the two air outlet pipes 32 (e.g. Figure 10 When the length of the middle air outlet pipe 32 is shorter, the corresponding handles 341 on both sides are rotated to rotate the rotating air distribution blades 34 toward the middle air outlet pipe 32, thereby guiding part of the air flow in the middle pre-flow chamber to the air outlet pipes 32 on both sides, thereby forming an air volume adjustment.

[0055] A first pressure measuring tube 61 is installed at the throat 322; a second pressure measuring tube 62 is installed in the mixing chamber, with a differential pressure flowmeter installed between the first and second pressure measuring tubes 61, 62. The first and second pressure measuring tubes 61, 62, and differential pressure flowmeter form a Venturi differential pressure flowmeter. The handle 341 is rotated to swing the air distribution blades 34 based on the flow rate indicated by the flowmeter installed on each outlet pipe 32, adjusting the air volume entering each outlet pipe 32. This ensures uniform air flow across all outlet pipes 32 and prevents material accumulation due to insufficient air volume.

[0056] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A one-outlet, multiple-feeding structure with uniform discharging, characterized by: Including material barrel, air delivery system, air distribution system and feeding pipe; The feed barrel is used to store feed, and a discharge port is provided at the bottom of the feed barrel; The air supply system includes a fan and an air supply pipe connected in sequence; The air distribution system is connected between the discharge port, the air supply pipe and the feed pipe; it includes an air distribution pipe body; the front end of the air distribution pipe body is provided with an air inlet, and the rear end thereof is connected in parallel with multiple air outlet pipes; the air inlet is connected to the air supply system; each of the air outlet pipes is connected to one of the feed pipes; a feed inlet is also provided on the side wall of the air outlet pipe, and the feed enters the air outlet pipe from the feed inlet; One of the feeding pipes is connected to a rotating material spreading device.

2. A one-outlet, multiple-feeding structure with uniform discharging according to claim 1, characterized in that: The air outlet pipe includes a mixing chamber and a diffusion chamber arranged in sequence from front to back; The front end of the mixing chamber is provided with a nozzle, and the rear end thereof is provided with a throat opposite to the nozzle; the diameter of the throat is smaller than the diameter of the mixing chamber; the mixing chamber is provided with a contraction section at the front end of the throat, and the contraction section is a conical structure, and its cross-sectional area decreases along the flow direction; the feed port is provided at the top of the mixing chamber; The diffusion chamber comprises a gradually expanding section and an outlet section which are sequentially arranged 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. A one-outlet, multiple-feeding structure with uniform discharging according to claim 2, characterized in that: The nozzle is a conical structure and extends backward to the rear of the feed port.

4. The one-outlet-multiple-feeding structure with uniform discharging according to claim 1, characterized in that: A distributing device is installed on the discharge port, and the distributing device includes a shell, an upper end of the shell is provided with an opening, the opening is fixed on the discharge port, and is used to receive the feed in the barrel; a plurality of distributing pipes are connected in parallel at its lower end; one distributing pipe is inserted into one of the feed ports; a distributing device is rotatably installed between the opening and the distributing pipe; the distributing device includes a rotating shaft rotatably installed on the shell, a distributing piece fixed on the rotating shaft, and a driving device for driving the rotating shaft to rotate; the distributing piece rotates, driving the feed above to fall in an orderly manner and fall into the corresponding distributing pipe.

5. A one-outlet, multiple-feeding structure with uniform discharging according to claim 4, characterized in that: In the shell, the area between the material diverting device and the material distribution pipe is divided into multiple chambers by a partition. The multiple chambers are evenly arranged along the axial direction of the rotating shaft, and a material distribution pipe is arranged at the bottom of each chamber.

6. The one-outlet-multiple-feeding structure with uniform discharging according to claim 2, characterized in that: The air distribution pipe body 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 has a smooth transition; and a plurality of the air outlet pipes are horizontally connected in parallel on the elliptical pipe opening.

7. The one-outlet-multiple-feeding structure with uniform discharging according to claim 2, characterized in that: A flow meter is installed on each of the air outlet pipes; and an air volume regulating device is installed at the air inlet position of the air outlet pipe.

8. The one-outlet-multiple-feeding structure with uniform discharging according to claim 7, characterized in that: The air volume regulating device includes an air distribution blade installed in the air distribution pipe body and located between the adjacent air outlet pipes; the rotating shaft of the air distribution blade is rotatably installed between the two air outlet pipes and can swing between the two air outlet pipes; the air distribution blade extends from the back to the front toward the air inlet, and guides the air entering from the air inlet direction into the corresponding air outlet pipe; the central axis of the air distribution blade passes through the air distribution pipe body and is equipped with a handle, and the air distribution blade is driven to swing by rotating the handle.

9. The one-outlet-multiple-feeding structure with uniform discharging according to claim 7, characterized in that: A rib is provided in the air distribution pipe body at the front end of the air distribution blade corresponding to each air outlet pipe. The rib divides the inner cavity of the air distribution pipe body into multiple pre-flow chambers, and each pre-flow chamber corresponds to one air outlet pipe; the air distribution blade connects the rib and the air outlet pipe.

10. The one-outlet-multiple-feeding structure with uniform discharging according to claim 9, characterized in that: A first pressure measuring tube is provided at the throat position; a second pressure measuring tube is provided at the mixing chamber, and a differential pressure flowmeter is provided between the first pressure measuring tube and the second pressure measuring tube.

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