An automatic shrimp breeding device

Abstract

The present application relates to the technical field of feeding technology, and specifically discloses an automatic shrimp breeding device, which comprises a base, a feeding head, and a motor for driving the feeding head to rotate, an upwardly extending mounting cylinder is fixedly installed on the base, a feeding inlet is arranged on the mounting cylinder, a pneumatic conveying mechanism is connected to the feeding inlet, the feeding head is rotatably installed on the mounting cylinder, a reverse conical rotary screen is installed in the feeding head, a crushed feed outlet is arranged at the top of the feeding head, a collecting bin is connected to the crushed feed outlet, the motor is connected to the rotary screen through a sliding transmission pair, a vibrating mechanism for vibrating the rotary screen is arranged on the sliding transmission pair, and a plurality of discharge pipes penetrating through the side wall of the feeding head are circumferentially arranged at the top edge of the rotary screen; the present application can screen the crushed granular feed through the rotary screen, and can avoid the crushed granular feed from entering the water body during the feeding process.

Description

Technical Field

[0001] This invention relates to the field of feeding technology, specifically to an automated shrimp farming device. Background Technology

[0002] Shrimp farming techniques must be tailored to their biological characteristics. They exhibit strong specificity in feeding habits and environmental requirements, and negligence in management can easily lead to negative consequences. Shrimp are typical nocturnal benthic organisms. During the day, they rely on their well-developed sense of smell to detect safety, burrowing into the sandy or muddy bottom to a depth of 3 cm using their abdominal appendages, leaving only their eyes exposed. They emerge to forage after sunset. They forage slowly and cautiously, using their walking legs to grasp food. They are sensitive to the physical form and water tolerance of feed. Due to their rapid growth and high metabolism, artificially formulated feeds need to contain 50% to 60% crude protein. Farming management should follow their nocturnal rhythm, with over 70% of feeding concentrated at night to avoid daytime feed waste. However, the situation worsens when feed processing, transportation, or feeding generates large amounts of debris that fall to the pond bottom. Shrimp struggle to grasp this debris, reducing feeding efficiency, causing nutrient loss from the debris, increasing the feed conversion ratio and costs. Furthermore, the decomposition of uneaten organic debris consumes dissolved oxygen in the water and releases toxic metabolic products. Shrimp are sensitive to water pollution and require water temperatures of 17 to 29 degrees Celsius, salinity of 15% to 30%, and dissolved oxygen levels above 4 mg / L to burrow and feed normally. Deterioration of water quality due to contaminated feed fragments inhibits their burrowing instinct, weakens their immunity, makes them more susceptible to disease, and ultimately leads to farming failure.

[0003] Chinese patent document CN110476861B discloses a pneumatic feeder, including a storage tank and a float assembly. A pneumatic conveying mechanism for transporting feed is installed at the bottom of the storage tank. The pneumatic conveying mechanism includes a feeder, a feed box, and a Roots blower. The feeder is installed at the discharge port at the bottom of the storage tank, and the feed box is installed at the bottom of the feeder. Two discharge pipe joints are connected to one side of the feed box, used for simultaneously feeding two fishponds. Of course, two sets of the corresponding float assembly and supporting mechanisms are also required. One end of the discharge pipe connector is connected to a feed conveying pipe. A manual control valve is installed on the discharge pipe connector. The Roots blower is installed on the other side of the air-feed box, and the air outlet of the Roots blower is connected to the inner cavity of the air-feed box. By operating the corresponding button switch on the electrical control box on the storage box, the sealing blades inside the feeder start to rotate, causing the feed to fall quantitatively into the air-feed box. Then, it is blown by the negative pressure air force generated by the Roots blower, and the feed enters the feed conveying pipe from the air-feed box for conveying. A feeding mechanism is installed on the float assembly. The feeding mechanism includes a feeding motor, a support cylinder, and a rotating feeding head. The support cylinder is vertically fixed on the top support plate. The rotating feeding head is rotatably installed on the upper end of the support cylinder. The feeding motor is fixed on the lower surface of the top support plate, and the output shaft of the feeding motor passes through the support cylinder and is fixedly connected to the lower surface of the inner cavity of the rotating feeding head. The rotating feeding head has six discharge cylinders of different lengths arranged circumferentially. One end of the support cylinder is provided with an inlet pipe connector, and the other end of the feed conveying pipe is connected to the inlet pipe connector. The feed, transported by negative pressure wind to the feed conveying pipe, enters the inner cavity of the support cylinder and the rotating feeding head through the feed inlet pipe joint. Then, under the action of centrifugal force, the feed is thrown into different discharge cylinders for discharge. Since the six discharge cylinders are of different directions and lengths, they can cover a large area of ​​scattering operations.

[0004] Chinese patent document CN121153631A discloses a shrimp farming feeder with EM bacteria decomposition function, relating to the field of feeder technology. It includes a horizontal track structure with a traveling trolley mounted on it; a storage tank for feed storage is mounted on the traveling trolley; a screw feeder is located on one side of the storage tank; the end of the screw feeder is connected to a feed feeding mechanism; the feed feeding mechanism includes a front and rear feed cover, with a screening cylinder installed inside the rear cover; a crushing component is installed inside the screening cylinder; it can simultaneously crush compacted feed while rotating, and simultaneously push uncrushed feed into an auger roller, which then returns it to the storage tank, thus forming a circulating feed supply, which is beneficial for repeated crushing of compacted feed; granular feed passes through the screening cylinder and falls back into the front and rear feed covers, and is discharged through a feeding pipe at the bottom of the rear cover, thus realizing feed feeding.

[0005] Because shrimp do not swallow food like fish, but instead use their second pair of walking legs to grasp the feed and then slowly "nibble" it with their lower jaws, very fine feed is difficult to grasp effectively, resulting in a significant reduction in their feeding efficiency. In the aforementioned technology, feed pellets need to be sent into the feeding mechanism through a feed conveying pipe, and the feed is prone to clumping or forming a bridging effect, leading to poor discharge. Therefore, the feed pellets need to be broken up, which generates broken feed. As the feed enters the feeding mechanism from the storage tank through the feed output pipe, the feed pellets inevitably break up due to collisions with the inner wall of the pipe, resulting in broken feed being scattered into the shrimp pond. Due to the shrimp's nibbling habits, it is difficult for them to effectively grasp these overly fine particles, leading to a significant reduction in feeding efficiency. The fine particles will dissolve in the water, causing water pollution. Summary of the Invention

[0006] This invention provides an automated shrimp farming device, which aims to solve the problem of water pollution caused by broken feed particles entering the water body during feeding in related technologies.

[0007] An automated shrimp farming device includes a base, a feeding head, and a motor for driving the feeding head to rotate. An upwardly extending mounting cylinder is fixedly installed on the base. The mounting cylinder is provided with a feeding interface for connecting an external pneumatic conveying mechanism and a feeding hole communicating with the feeding interface. The lower end of the feeding head is rotatably installed on the mounting cylinder. The feeding head is provided with a discharge pipe. The feeding head is provided with a discharge channel for connecting the feeding hole and the discharge pipe. The feeding head and the mounting cylinder are fitted together in an up-and-down movable manner. A sliding transmission pair is provided between the motor and the feeding head to allow the feeding head to move up and down while transmitting torque. A return spring is provided between the feeding head and the mounting cylinder to pull down the feeding head when the feeding head is lifted by wind. The feeding head is equipped with a crushed material outlet that communicates with the upper end of the discharge channel and a collection bin that communicates with the crushed material outlet; a rotating screen is fixed in the middle of the discharge channel of the feeding head; the discharge pipe has an inner pipe opening that connects to the discharge channel; the rotating screen is inverted conical and its upper edge is aligned with the upper edge of the inner pipe opening of the discharge pipe; the rotating screen is used to guide feed particles through the discharge pipe and screen out crushed material during the guiding process, which is then discharged through the crushed material outlet.

[0008] Its effects are as follows: Because the discharge channel inside the feeding head is equipped with a rotating screen and a side screen with the cone tip pointing downwards, the feed particles, under the action of wind, will mainly spiral upwards along the inner wall of the screen, thus increasing the residence time and sliding path of the feed particles on the screen surface. This allows most of the broken material mixed in the feed to have a greater chance of being discharged through the rotating screen, while the remaining broken material is screened by the side screen, reducing the amount of broken material discharged from the discharge pipe. Simultaneously, the return spring between the feeding head and the mounting cylinder, as well as the sliding transmission pair between the motor and the feeding head, allow the feeding head to rise and fall simultaneously while rotating. The reciprocating motion, when the air pressure increases due to the decreased flow of the rotating screen, allows the feeding head to break the static friction between the material and the screen surface through its lifting and lowering motion, thus achieving dynamic cleaning. This prevents fine particles from becoming embedded in the mesh due to adhesion or compression, and also breaks up clumps of material. Through this dynamic cleaning, the feed particles scattered into the aquaculture pond through the discharge pipe have a high degree of integrity. This aligns with the physiological habits of shrimp, which use their walking legs to grasp and slowly nibble on the feed. It avoids decreased feeding efficiency due to excessive broken feed and secondary pollution of the water quality by uneaten feed, providing more suitable feeding conditions for shrimp growth.

[0009] Preferably, a guide ring is fixedly provided inside the mounting cylinder, thereby forming a narrow-diameter flow channel with a wide upper and lower end and a narrow middle end.

[0010] The effect is that the funnel-shaped discharge channel accelerates and converges the feed airflow conveyed by the pneumatic conveying mechanism. When feed particles enter from the wider area at the top of the mounting cylinder, the airflow velocity increases significantly as the channel cross-section gradually narrows to the narrow outlet formed by the guide ring. This Venturi effect gives the feed particles stronger initial kinetic energy, enabling them to more effectively rush towards and move upward along the conical inner wall of the rotating screen, reducing feed accumulation at the bottom of the mounting cylinder and ensuring the continuous and stable operation of the subsequent screening process. At the same time, the narrow structure in the middle also plays a certain preliminary sorting role for the feed, allowing the feed particles to enter the working area of ​​the rotating screen in a relatively concentrated manner.

[0011] Preferably, the collection bin includes a guide pipe sleeved on the outside of the feeding head, the top end of the guide pipe is fixed with a closed conical guide cap, and there is a gap between the inner wall of the guide pipe and the outer wall of the feeding head, which forms a crushed material downward channel communicating with the crushed material outlet.

[0012] Its effects are as follows: The closed conical guide cover acts as a barrier and deflector in the airflow organization. The airflow containing debris overflowing from the top of the rotating screen cannot directly dissipate upwards or horizontally due to the obstruction of the cover. The conical design of the cover, which is smaller at the top and larger at the bottom, uses the principle of aerodynamic flow guidance to forcibly transform the originally rising airflow into a downward backflow, thereby guiding the debris into the debris downward channel. This physical reversal path of airflow increases the force of debris settling. At the same time, the closed structure of the cover ensures the sealing of the top of the entire feeding mechanism, preventing debris from leaking from the top gaps under high-pressure air conveying conditions, increasing the probability of debris collection, and making the dust entering the channel more concentrated. In actual production, this helps to reduce the dust concentration in the workshop and protect the health of the workers.

[0013] Preferably, a plurality of discharge pipes are arranged circumferentially through the side wall of the feeding head, and the plurality of discharge pipes are respectively fixedly connected to the guide pipe so that the feeding head drives the guide pipe to rotate synchronously.

[0014] Its effects are as follows: multiple discharge pipes serve as the skeleton system connecting the rotating screen, feeding head, and guide pipe, achieving complex coaxial synchronous rotation. By utilizing the discharge pipes as coupling components for mechanical transmission, a single motor drive can rotate the entire mechanism. Through multi-point support connections, the coaxiality and structural stability of the inner, middle, and outer three-layer structure are ensured during high-speed rotation, reducing mechanical vibration during rotation. The discharge pipes, as the physical medium for power transmission, eliminate the need for additional gear or belt drive mechanisms, simplifying the mechanical structure. Synchronous rotation ensures that the crushed material downward channel operates synchronously with the feeding action, maintaining the continuity of the recycling process. In aquaculture environments, the simplified mechanical structure helps improve the equipment's corrosion resistance and operational reliability, reducing the difficulty of later maintenance.

[0015] Preferably, the bottom end of the guide tube is fixedly connected to a debris collection bin that rotates synchronously with it, and the debris collection bin is sleeved around the mounting cylinder.

[0016] Its effects are as follows: the waste collection bin is installed on the outside of the installation cylinder and connected to the bottom of the guide pipe, so that waste materials can be stored in a concentrated manner nearby. Since the collection bin rotates synchronously with the guide pipe, the waste materials falling from the downward channel can directly enter the bin, shortening the transportation distance of waste materials and avoiding secondary spillage. The setting of the collection bin protects the core stationary components such as the installation cylinder from direct contact with waste materials, reducing the wear caused by material accumulation on the rotating parts. The use of the space at the bottom of the equipment makes the overall structure compact. The collected waste materials are confined in a relatively closed space and will not be scattered by the wind. For automated farms that operate for a long time, it is convenient for farmers to clean up waste materials in a concentrated manner, reducing labor input and improving the level of on-site hygiene management.

[0017] Preferably, the bottom of the debris collection bin is provided with an annular filter screen to trap debris when exhaust gas is discharged.

[0018] Its effects are as follows: The conical filter screen at the bottom of the debris collection bin provides a channel for exhaust gas discharge. After the airflow carries debris into the collection bin, it must pass through the filter screen before it can be discharged, thereby achieving gas-solid separation. The filter screen is conical with a smaller top and a larger bottom on the side near the mounting cylinder, which changes the normal pressure distribution when the airflow passes through the filter screen. Compared with traditional flat filter screens, the conical inclined surface can generate radial component force during rotation, which weakens the retention force of fine debris on the filter screen surface. The airflow has a certain cleaning effect when it blows over the inclined surface, which can drive the debris to move outward, ensuring the long-term smoothness of the exhaust path and avoiding the increase of air conveying back pressure caused by filter screen blockage. The stable exhaust pressure ensures that the material dropping frequency of the front air conveying mechanism is consistent, keeping the feeding amount at a constant level.

[0019] Preferably, the outer circumference of the filter screen is provided with a bottom plate, and the bottom plate is installed at the bottom of the debris collection bin.

[0020] Its advantages are as follows: the detachable bottom plate provides an outlet for the discharge of debris and equipment cleaning. The bottom plate is installed on the outermost side of the collection bin via a quick-release connection, serving as the final accumulation area for debris. During the cleaning process, the aquaculture personnel can dispose of the waste by removing the bottom plate without disassembling the complex transmission unit. The presence of the bottom plate ensures that the debris will not leak outward under centrifugal force, maintaining the airtightness of the bottom of the collection bin. In shrimp farms with severe salt spray corrosion, the detachable structure not only facilitates targeted anti-corrosion maintenance but also shortens downtime for cleaning and improves the overall working efficiency of the machine.

[0021] Preferably, the filter screen is arranged in a conical structure with a smaller top and a larger bottom, and the debris slides outward along the conical slope of the filter screen and accumulates on the base plate.

[0022] The effect is as follows: under the action of wind pressure, the debris slides outward along the inclined surface of the filter screen. The debris on the filter screen surface is not only subjected to downward gravity and wind pressure, but also to vibration generated by the collection bin. Under the vector combination of these forces, the debris tends to slide along the inclined surface of the filter screen towards the outer circle with a larger radius, and finally falls into the bottom plate area. This avoids the debris from being pressed firmly on the mesh due to wind pressure and unable to move. Through this dynamic material transfer process, the effective ventilation area of ​​the filter screen is always maintained, realizing automatic guidance and zoned storage of waste, and reducing the frequency of manual cleaning caused by material accumulation on the filter screen.

[0023] Preferably, the sliding transmission pair includes an upper shaft and a lower shaft. The upper shaft is slidably mounted on the lower shaft in the vertical direction. The upper shaft is fixedly connected to the rotating screen, and the lower shaft is connected to the output shaft of the motor. A vibration mechanism for causing the feeding head to vibrate up and down is installed inside the sleeve.

[0024] Its effect is as follows: the excitation mechanism composed of wave cam and driven roller transforms the smooth rotational motion into high-frequency axial reciprocating vibration. This two-section telescopic shaft structure transmits torque while using the undulation of the cam to guide the upper shaft to produce displacement. This axial vibration is directly transmitted to the rotating screen, causing the feed particles on the screen to be in a micro-jumping state. The vibration can effectively destroy the bridging phenomenon between material particles, reduce the adhesion between the material and the screen surface, and at the same time, it can shake apart the clumps of material. Especially in the high humidity aquaculture environment, this prevents feed powder from getting damp, clumping, and clogging the mesh. The continuous micro-vibration not only ensures the cleaning efficiency, but also makes the material flow thrown out through the discharge pipe more uniform, avoiding the interruption of throwing caused by uneven material discharge.

[0025] Preferably, the vibration mechanism includes a sleeve mounted on a base, the sleeve being fitted onto the lower shaft, and a wavy end face cam being provided at the top of the sleeve, and a follower cooperating with the wavy end face cam being provided at the bottom of the upper shaft.

[0026] By adopting the above technical solution, the beneficial effects of the present invention are as follows: 1. The rotating screen combined with the vibration mechanism solves the problem of feed pellet breakage affecting the feeding process. Shrimp use their second pair of walking legs to grasp the feed and slowly nibble at it with their lower jaws, which requires a certain degree of pellet integrity. This structure uses an inverted cone shape to increase the spiral climbing path of the feed, so that the feed undergoes a longer centrifugal motion process before being scattered. The vibration mechanism generates reciprocating motion through the wave-shaped end face cam on the sliding transmission pair, which can break the contact between fine powder and the mesh surface, and between pellets, and can also break up clumps of material, allowing the fragments to pass through the mesh. This ensures that the material discharged from the discharge pipe is mostly intact pellets, reducing powder mixing, improving the shrimp's feeding environment, reducing the loss of fragments, and increasing the proportion of intact pellets. This not only reduces the burden of uneaten feed on water quality, but also allows shrimp to obtain nutrients more effectively, which is in line with their physiological feeding habits.

[0027] 2. Through the feeding head, guide pipe, and closed conical guide cover, the airflow forms a restricted reflux trajectory inside the device. The broken material that penetrates the screen is no longer dispersed to the outside by air pressure, but is blocked by the top cover and guided into the gap between the guide pipe and the feeding head. This prevents feed dust from spreading into the air and avoids fluctuations in the physicochemical properties of the water caused by dust falling directly onto the pond surface. The recovered broken material is concentrated in the broken material collection bin, reducing feed loss, helping to maintain the hygiene of the aquaculture area, reducing the interference of floating objects on the pond's light transmittance and dissolved oxygen distribution, and providing a more stable growth space for shrimp.

[0028] 3. By using multiple discharge pipes as connectors, the internal screen, feeding head, guide pipe, and collection bin are fixed together to form a coaxial rotating whole. The entire rotating part can be driven by a motor-driven sliding transmission pair, which simplifies the number of transmission components, ensures the coaxiality of the inner, middle, and outer three-layer structure during rotation, and reduces mechanical wear. The mounting cylinder, as a stationary support component, has a fixed guide ring inside that enables a smooth transition of pneumatic feeding from the stationary pipeline to the rotating screen. Due to the reduction of additional gear or chain mechanisms, the device has lower noise during operation. This simplified transmission logic improves the reliability of mechanical components, enabling it to adapt to high-frequency feeding tasks.

[0029] 4. The filter screen at the bottom of the waste collection bin features a conical slope design, altering the direction of airflow. During rotation, the waste on the screen slides upwards along the slope under wind pressure, increasing the flow distance. Simultaneously, vibration prevents material from accumulating on the screen surface under wind pressure, maintaining unobstructed exhaust channels. A stable air pressure environment ensures smooth feed delivery, preventing feed blockage caused by increased back pressure. The detachable bottom plate provides a direct opening for waste removal. In actual operation, waste can be dumped simply by removing the bottom plate, reducing downtime for maintenance and improving equipment utilization. The vibration generated during rotation also prevents feed powder from adhering to the inner wall of the screen in humid environments, ensuring consistent cleaning performance. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0031] Figure 2 This is a left view of the overall structure of the present invention.

[0032] Figure 3 This is a cross-sectional view of the feeding head of the present invention.

[0033] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0034] Figure 5 for Figure 3 Enlarged view of point B in the middle.

[0035] Figure 6 This is a top view of the sleeve of the present invention.

[0036] Figure 7 for Figure 3 Enlarged view of point C in the middle.

[0037] Figure label: 1. Base; 2. Motor; 3. Mounting cylinder; 4. Guide ring; 5. Feeding head; 6. Rotary screen; 7. Sliding transmission pair; 71. Upper shaft; 72. Lower shaft; 8. Vibration mechanism; 81. Sleeve; 82. Return spring; 821. Material stop sleeve; 83. Driven roller; 84. Wave-shaped end face cam; 9. Discharge pipe; 10. Guide pipe; 11. Crushed material collection bin; 12. Filter screen; 13. Base plate. Detailed Implementation

[0038] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0039] like Figures 1-7 As shown in the figure, an automated shrimp farming device according to an embodiment of the present invention includes a feeding mechanism and a pneumatic conveying mechanism (not shown in the figure). The pneumatic conveying mechanism is used to feed feed pellets into the feeding mechanism, and the feeding mechanism is used to scatter the feed pellets into the shrimp pond.

[0040] The feeding mechanism consists of a base 1, a motor 2, an installation cylinder 3, a guide ring 4, a feeding head 5, a rotating screen 6, a sliding transmission pair 7, a vibration mechanism 8, a discharge pipe 9, a guide pipe 10, a crushed material collection bin 11, a filter screen 12, and a bottom plate 13. The feed is fed into the installation cylinder 3 through the feeding interface by the pneumatic conveying mechanism. After being guided by the guide ring 4, it enters the rotating screen 6. Under the combined force of centrifugal force, wind force, and vibration, the whole feed particles climb along the inner wall of the screen and are discharged through the discharge pipe 9, while the crushed material passes through the filter screen 12 and falls into the crushed material collection bin 11.

[0041] The base 1 is placed horizontally on a support platform surrounding the aquaculture pond. A support position for mounting the motor 2 is located at the center of the base 1. The mounting cylinder 3 is fixedly welded to the center of the upper surface of the base 1. The mounting cylinder 3 has a cylindrical structure, with its axis perpendicular to the horizontal plane of the base 1. A feed inlet is provided on the lower side wall of the mounting cylinder 3, with a flange extending outwards for a sealed connection with an external air conveying mechanism. The internal space of the mounting cylinder 3 forms an upward channel for feed and airflow. A guide ring 4 is fixedly mounted on the central axis inside the mounting cylinder 3. The interior is equipped with a funnel-shaped discharge channel. The outer circumference of the guide ring 4 is fixed to the inner wall of the mounting cylinder 3 by ribs. The lower port diameter of the guide ring 4 is aligned with the airflow path of the feed inlet to gather the diffused airflow and feed into an upward flow. The upper port of the guide ring 4 is located in the upper middle part of the mounting cylinder 3 to accurately convey the material to the subsequent rotary screen 6. The base 1, together with the mounting cylinder 3 and the internal guide ring 4, forms a static flow guiding and support structure, ensuring that the material has a stable direction of movement before entering the rotary screen 6.

[0042] The feeding head 5 is rotatably mounted on the top of the mounting cylinder 3. The rotating screen 6 is coaxially mounted inside the feeding head 5. The rotating screen 6 is made of stainless steel mesh with a specific aperture. Its cone tip faces downward and is located at the bottom center of the feeding head 5. The opening of the cone tip of the rotating screen 6 is directly opposite the upper outlet of the guide ring 4 inside the mounting cylinder 3. A gap is left between the two to form a discharge channel. The feed discharged from the stationary guide ring 4 can directly enter the bottom of the rotating screen 6. The inner diameter of the rotating screen 6 gradually increases from bottom to top, forming an outwardly opening conical slope. The top of the feeding head 5 is provided with a crushed material outlet that communicates with the upper end of the discharge channel, so that the airflow and fine particles passing through the filter screen 12 can move upward. The function of the rotating screen 6 is to provide a physical track for the feed particles to climb upward using its inclined inner surface, and at the same time, to achieve preliminary gas-solid separation through the mesh, separating the powder with a smaller particle size from the main feed flow.

[0043] The motor 2 is fixedly installed at the bottom of the base 1. The sliding transmission pair 7 is connected to the output end of the motor 2 through a coupling. The sliding transmission pair 7 passes through the center of the base 1 vertically and extends upward. The top end of the sliding transmission pair 7 is fixedly connected to the cone tip of the rotating screen 6, thereby transmitting the torque of the motor 2 to the screen. The sliding transmission pair 7 adopts a two-section telescopic shaft structure, which is divided into a lower shaft 72 and an upper shaft 71. The lower shaft 72 is connected to the output end of the motor 2, and the upper shaft 71 is connected to the rotating screen 6. A connecting rod is provided on the upper shaft 71. The connecting rod is used to fix the feeding head 5 to the upper shaft 71. The two shafts are connected by a sliding key to achieve circumferential synchronous rotation and allow axial relative sliding. The vibration mechanism 8 is mounted on the upper shaft 71. The vibration mechanism 8 includes a return spring 82, a sleeve 81 fixed to the base 1, and a driven roller 83 rotatably mounted at the bottom end of the upper shaft 71. The sleeve 81 is fitted onto the outer side of the lower shaft 72, and a wave-shaped end face cam 84 is provided at the top of the sleeve 81. The bottom end of the return spring 82 is connected to the inner wall of the mounting cylinder 3, and a bearing is mounted at its top. The top of the bearing is connected to the bottom end of the feeding head 5. A baffle is provided inside the return spring 82 to prevent feed particles from entering the return spring 82. When the motor 2 drives the sliding transmission pair 7 to rotate, the driven roller 83 moves along the undulating surface of the wavy end face cam 84, forcing the upper shaft 71 to drive the rotating screen 6 to generate periodic reciprocating up and down vibration. This axial vibration and centrifugal rotation superimpose to make the feed particles on the inner surface of the screen in a jumping state, thereby causing the clumped or blocked feed particles to vibrate and disperse, and can prevent the feed particles from sticking to the filter screen 12 due to wind pressure or stickiness. It also plays a role in cleaning the mesh and avoiding clogging. In another embodiment, the vibration mechanism 8 is a blade assembly, which is mounted on the upper shaft 71. The upper shaft 71 drives the blade assembly to rotate and break up clumps or blockages of feed particles.

[0044] Multiple discharge pipes 9 are provided and evenly distributed circumferentially along the top edge of the rotating screen 6. The inner end of the discharge pipe 9 is located on the side wall of the feeding head 5, and the inner end of the discharge pipe 9 is located at the upper opening of the rotating screen 6. The guide pipe 10 is sleeved on the outside of the feeding head 5. The body of the discharge pipe 9 is slightly inclined and continues to extend outward through the side wall of the guide pipe 10. The discharge pipe 9 is not only the discharge channel for complete feed pellets, but also, when the motor 2 drives the sliding transmission pair 7 to rotate, the sliding transmission pair 7 drives the feeding head 5 and the rotating screen 6 to rotate together, realizing the coaxial linkage of the whole system. The outer port of the discharge pipe 9 is located at the outermost part of the entire device and is used to scatter the cleaned feed pellets into the breeding pond. The design length of the discharge pipe 9 ensures that the scattering radius coverage meets the feeding requirements.

[0045] The inner diameter of the guide pipe 10 is larger than the outer diameter of the feeding head 5. Their coaxial arrangement creates an annular downward channel for crushed materials between the inner wall of the guide pipe 10 and the outer wall of the feeding head 5. The guide pipe 10 is fixed to the periphery of the feeding head 5 by the support of the discharge pipe 9 and rotates synchronously with it. A closed conical guide cap is provided at the top of the guide pipe 10. The conical guide cap is shaped like a cone with a smaller top and a larger bottom. Its bottom edge is welded and fixed to the top edge of the guide pipe 10. The highest point of the conical guide cap is located on the central axis of the device. Furthermore, the height exceeds the top of the feeding head 5, forming an airflow reversal space inside the conical guide top cover. When the airflow carrying the broken material is ejected from the upper opening of the rotating screen 6 and enters the top of the feeding head 5, it is blocked by the closed conical guide top cover. The airflow is forced to change its direction of movement and turn downward along the conical surface, and then enters the broken material downward channel. The guide pipe 10, in conjunction with the conical guide top cover, realizes the physical capture of broken material and dust. By changing the airflow path, the broken material is forced into the downward channel, avoiding the dust from escaping into the surrounding environment.

[0046] The debris collection bin 11 is fixedly connected to the bottom end of the guide pipe 10 and located in the outer space of the mounting cylinder 3. The debris collection bin 11 has an annular barrel structure, and its inner diameter is larger than the outer diameter of the mounting cylinder 3 to ensure that they do not interfere with each other during rotation. The debris collection bin 11 rotates synchronously with the guide pipe 10. Its top annular opening is connected to the bottom outlet of the debris downward channel, so that the falling debris directly enters the interior of the debris collection bin 11. An annular filter screen 12 is set on the bottom plate 13 of the debris collection bin 11 near the outer wall of the mounting cylinder 3. The filter screen 12 is provided with multiple connecting rods for connecting the filter screen 12 to the debris collection bin 11. The filter screen 12 is made of fine... Made of dense metal wire mesh, it is used to intercept fine debris in the debris collection bin 11 when exhausting the exhaust gas of the pneumatic conveying system. The filter screen 12 has a tapered inclined design with a smaller top and a larger bottom. This inclined angle makes the surface of the filter screen 12 form a certain angle with the axis of rotation. The bottom plate 13 is set on the outside of the filter screen 12. The bottom plate 13 is a metal ring, which is installed at the bottom of the debris collection bin 11 by bolts and pins. The bottom plate 13 forms the final accumulation area of ​​debris. Farmers can remove the bottom plate 13 for cleaning according to the accumulation of debris. The design of the debris collection bin 11 realizes the collection of waste nearby, and its rotation provides power for the automatic displacement of debris.

[0047] The working principle and process are as follows: After starting motor 2, motor 2 drives the sliding transmission pair 7 to rotate, and the lower shaft 72 drives the upper shaft 71 to rotate. The driven roller 83 moves against the surface of the wave-shaped end face cam 84 under the force of the return spring 82, so that the upper shaft 71 drives the rotating screen 6, feeding head 5, guide pipe 10 and crushed material collection bin 11 to generate high-frequency axial vibration while rotating. The air conveying mechanism sends the material flow mixed with air and feed particles into the mounting cylinder 3 through the feeding interface. After the material flow enters the guide ring 4, it is gathered and sprayed upward. The material flow is sprayed into the bottom cone tip of the rotating screen 6. At this time, the feed particles are subjected to the centrifugal force generated by the rotation and move against the inner wall of the screen. Since the rotating screen 6 is inverted cone-shaped and subjected to continuous wind thrust and axial vibration, the feed particles overcome gravity and climb upward in a spiral shape along the inner wall of the rotating screen 6. During the climbing process, the fine fragments and dust mixed in the feed are affected by wind pressure and vibration and pass through the rotating screen. The mesh openings of screen 6 enter above the rotating screen 6 and are ejected from the top of the feeding head 5 by the airflow. Whole feed pellets rise to the top edge of the rotating screen 6 and directly enter the discharge pipe 9, where they are ejected outwards by centrifugal force and scattered into the pond. The ejected airflow of broken material impacts the closed conical guide cover above. Due to the guiding effect of the sloping surface of the cover (smaller at the top and larger at the bottom), the airflow carries the broken material back into the downward channel between the guide pipe 10 and the feeding head 5, where it plunges downwards. The broken material falls into the feed... After the collection bin 11 is filled, the waste gas is deposited on the filter screen 12. Excess waste gas passes through the filter screen 12 and is discharged into the outside. Due to the outward centrifugal force generated by the rotation of the collection bin and the outward thrust along the inclined surface generated by the airflow passing through the filter screen 12, the waste gas slides outward along the conical inclined surface of the filter screen 12 and eventually crosses the area of ​​the filter screen 12 and accumulates on the bottom plate 13 at the outermost circumference. After the feeding operation is completed, the bottom plate 13 is manually removed to clean the collected waste gas, thus completing the entire feeding and cleaning cycle.

[0048] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An automated shrimp farming device, comprising a base (1), a feeding head (5), and a motor (2) for driving the feeding head (5) to rotate, wherein an upwardly extending mounting cylinder (3) is fixedly installed on the base (1), the mounting cylinder (3) is provided with a feeding interface for connecting an external pneumatic conveying mechanism and a feeding hole communicating with the feeding interface, the lower end of the feeding head (5) is rotatably installed on the mounting cylinder (3), the feeding head (5) is provided with a discharge pipe (9), and a discharge channel for connecting the feeding hole and the discharge pipe (9) is provided inside the feeding head (5), characterized in that: The feeding head and the mounting cylinder are fitted together in an up-and-down motion. A sliding transmission pair (7) is provided between the motor (2) and the feeding head (5) to allow the feeding head (5) to move up and down while transmitting torque. A return spring (82) is provided between the feeding head and the mounting cylinder to pull down the feeding head when the feeding head is lifted by the wind. The feeding head (5) is provided with a crushed material outlet that communicates with the upper end of the discharge channel and a collection bin that communicates with the crushed material outlet; a rotating screen (6) is fixed in the middle of the discharge channel of the feeding head (5); the discharge pipe (9) has an inner pipe opening that connects to the discharge channel; the rotating screen (6) is inverted cone-shaped and the position of the upper edge is aligned with the upper edge of the inner pipe opening of the discharge pipe (9); the rotating screen (6) is used to guide feed particles to be discharged through the discharge pipe (9) and to screen out crushed material during the guiding process and discharge it through the crushed material outlet.

2. The automated shrimp farming equipment according to claim 1, characterized in that, The installation cylinder (3) is fixedly provided with a guide ring (4), so that the discharge channel forms a narrow-diameter flow channel with a wide upper and lower end and a narrow middle end.

3. The automated shrimp farming equipment according to claim 2, characterized in that, The collection bin includes a guide pipe (10) sleeved on the outside of the feeding head (5). The top of the guide pipe (10) is fixed with a closed conical guide top cover. There is a gap between the inner wall of the guide pipe (10) and the outer wall of the feeding head (5). This gap forms a crushed material downward channel that communicates with the crushed material outlet.

4. The automated shrimp farming equipment according to claim 3, characterized in that, Multiple discharge pipes (9) are arranged circumferentially through the side wall of the feeding head (5). The multiple discharge pipes (9) are respectively fixedly connected to the guide pipe (10) so that the feeding head (5) drives the guide pipe (10) to rotate synchronously.

5. The automated shrimp farming equipment according to claim 4, characterized in that, The bottom end of the guide tube (10) is fixedly connected to a fragment collection bin (11) that rotates synchronously with it, and the fragment collection bin (11) is sleeved around the mounting cylinder (3).

6. The automated shrimp farming equipment according to claim 5, characterized in that, The bottom of the debris collection bin (11) is provided with an annular filter screen (12) for intercepting debris when exhaust gas is discharged.

7. The automated shrimp farming equipment according to claim 6, characterized in that, The filter screen (12) has a base plate (13) on its outer circumference side, and the base plate (13) is installed at the bottom of the debris collection bin (11).

8. The automated shrimp farming equipment according to claim 7, characterized in that, The filter screen (12) is arranged in a conical structure with a smaller top and a larger bottom. The debris slides outward along the conical slope of the filter screen (12) and accumulates on the bottom plate (13).

9. The automated shrimp farming equipment according to claim 1, characterized in that, The sliding transmission pair (7) includes an upper shaft (71) and a lower shaft (72). The upper shaft (71) is slidably mounted on the lower shaft (72) in the vertical direction. The upper shaft (71) is fixedly connected to the rotating screen (6). The lower shaft (72) is connected to the output shaft of the motor (2). A vibration mechanism (8) for making the feeding head (5) vibrate up and down is installed in the sleeve (81).

10. The automated shrimp farming equipment according to claim 9, characterized in that, The vibration mechanism (8) includes a sleeve (81) mounted on a base (1), the sleeve (81) being mounted on the lower shaft (72), and a wave-shaped end face cam (84) being mounted on the top of the sleeve (81), and a follower cooperating with the wave-shaped end face cam (84) being mounted on the bottom of the upper shaft (71).

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