Automatic peanut seed weighing device

Abstract

The application relates to the technical field of peanut seeds, and discloses a peanut seed automatic weighing device which comprises a main body, a main hopper is arranged in the main body, a feeding disc mechanism is arranged below the main hopper, the feeding disc mechanism comprises a distributor, a transmission gear, a transmission gear ring, a transmission disc, a worm gear structure and a return spring, a plurality of distributors are arranged at the top end of the transmission disc, the transmission gear is arranged at the top end of the transmission disc, the transmission disc is arranged in the main hopper, the worm gear structure is arranged at the bottom end of the transmission disc, a top frame is arranged at the bottom end of the main body, and a flow guide sliding pipe is arranged in the top frame. The micro-amplitude high-frequency vibrator is used for breaking the bridge to prevent blockage, the feeding disc mechanism is used for realizing soft distribution of the seeds, mechanical damage is avoided, a pneumatic unloading mode is adopted, a high-frequency pulse electromagnetic valve is matched with a Venturi pulse jet nozzle, and problems such as inaccurate quantification and single function are solved.

Description

Technical Field

[0001] This invention relates to the field of peanut seed technology, specifically to an automatic peanut seed weighing device. Background Technology

[0002] The patent application with publication number CN221938529U includes a workbench. A support frame is fixedly connected to the surface of the workbench. A material cylinder frame is fixedly connected to the upper surface of the support frame. A discharge port is opened on the lower surface of the inner wall of the material cylinder frame. A discharge pipe is fixedly connected to the lower end of the discharge port. One end of the discharge pipe passes through the side wall of the support frame. A rotating rod is slidably connected to the center point of the lower surface of the inner wall of the material cylinder frame. A push rod is fixedly connected to one end of the rotating rod. A turntable is fixedly connected to the other end of the rotating rod. The turntable is slidably connected to the inside of the discharge pipe. A notch is opened on the surface of the turntable. A motor B is fixedly connected to the surface of the turntable and is mounted on the surface of the support frame. A conveying assembly is provided inside the workbench. A fixing plate is fixedly connected to the side of the workbench near the support frame. A feeding assembly is provided on the surface of the fixing plate. A dust collection assembly is provided at the upper end of the material cylinder frame.

[0003] The advantages are as follows: By setting up motor B, turntable, notch, discharge pipe, rotating rod, push rod, discharge port, and material cylinder frame, motor B can drive the turntable and push rod to rotate, allowing the push rod to push the seeds from the discharge port into the discharge pipe. The turntable blocks the middle of the discharge pipe, and the seeds will only flow out of the discharge pipe when the notch on the turntable rotates into the discharge pipe. Therefore, the seed quantitative dispensing effect can be achieved by controlling the speed of motor B. By setting up motor C, inlet, transfer pipe, spiral rotating frame, and discharge pipe, when there are no seeds in the material cylinder frame, the seeds can be poured into the transfer pipe through the inlet. Then, motor C is turned on, driving the spiral rotating frame to rotate, so that the seeds are transported from the bottom of the transfer pipe to the discharge pipe, and then fall into the material cylinder frame through the discharge pipe, thereby replenishing the seeds in the material cylinder frame and improving the practicality of the device.

[0004] Among the existing technologies, including the aforementioned patents, most commonly used automatic peanut seed weighing equipment has the following drawbacks: hard push rods squeeze and scrape peanut seeds, making the seeds brittle and prone to breaking and cracking, thus affecting germination activity and commercial value; the quantitative accuracy is low and unstable; fixed notch loading results in uneven filling of peanuts of varying sizes and poor flowability; the gravity free fall unloading method is rough, causing secondary damage to the seeds due to impact; the quantitative equipment has a relatively simple function, only completing quantitative feeding and cannot be adjusted through feedback. Summary of the Invention

[0005] (a) Technical problems to be solved Based on this, the purpose of this invention is to provide an automatic peanut seed weighing device to solve the technical problems of existing technologies, such as: hard push rods squeezing peanut seeds, which makes the seeds brittle and easily break the skin and crack the kernel, thus affecting germination activity and commercial value; fixed notch seed loading, where peanuts of different sizes and poor flowability result in uneven filling of the notch; gravity free fall unloading method, which is rough and causes secondary damage to the seeds due to impact; and quantitative devices with limited functions, which only complete quantitative feeding and cannot be adjusted through feedback.

[0006] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: an automatic peanut seed weighing device, comprising a main body, a main hopper disposed inside the main body, a feeding disc mechanism disposed below the main hopper, the feeding disc mechanism comprising a distributor, a transmission gear, a transmission gear ring, a transmission disc, a worm gear structure, and a return spring, the multi-group distributor being disposed at the top of the transmission disc, the transmission gear being disposed at the top of the transmission disc, the transmission gear ring being disposed at the top of the transmission disc, the transmission disc being disposed inside the main hopper, the worm gear structure being disposed at the bottom of the transmission disc, and the return spring being disposed outside the distributor; a quantitative unloading disc mechanism being disposed inside the main body, the quantitative unloading disc mechanism comprising a turntable, a quantitative cup, and a petal-shaped bottom door, the quantitative cup being disposed inside the main body, the quantitative cup being disposed at the top of the turntable, the petal-shaped bottom door being disposed at the bottom of the turntable, a top frame being disposed at the bottom of the main body, and a guide tube being disposed inside the top frame.

[0007] By adopting the above technical solution, after startup, the micro-amplitude high-frequency vibrators installed on both sides of the middle of the main hopper begin to work, generating mechanical micro-vibrations of a specific frequency and amplitude. These micro-vibrations effectively break up the "bridging" or "jamming" phenomenon that peanut seeds are prone to due to their irregular shape, ensuring that the seed population flows continuously and evenly towards the downward discharge port. This avoids interruptions in the supply from the source and provides a foundation for subsequent stable quantitative feeding. The APM module can dynamically adjust the intensity of the micro-amplitude high-frequency vibrators based on the preset initial value of the flow balance coefficient, which aims to optimize the feed flow... The stability of the speed will be continuously optimized through system operation data. The vibrated peanut seeds fall into the feeding disc mechanism at the tail end through the discharge port. This mechanism is the key to ensuring that the seeds are not rigidly damaged during high-speed sorting. Its working state and principle are as follows: The micro motor starts and drives the worm gear structure to rotate, which in turn drives the transmission disc coaxial with the worm gear to rotate at a low speed. The transmission gear ring fixed on the transmission disc rotates accordingly and drives multiple sets of transmission gears meshing with it to rotate at a higher relative speed. Each transmission gear has a sorter coaxially installed on its shaft end.

[0008] Furthermore, the distributor is elastically connected by a return spring and can slide radially on the top of the transmission disc. The transmission gear ring meshes with the teeth of the transmission gear. A conveyor belt is provided at the bottom of the main body. An auxiliary frame is provided on the outside of the conveyor belt. A high-frequency pulse solenoid valve is provided on the outside of the main body. A Venturi pulse jet nozzle is provided at the bottom of the high-frequency pulse solenoid valve.

[0009] By adopting the above technical solution, the distributor rotates at high speed while revolving (driven by the transmission gear), gently and continuously "sweeping" the peanut seeds along its trajectory to the discharge port at the bottom of the main hopper. The protective shell of the feeding tray mechanism is equipped with a radial groove. The tail of each distributor is connected by a return spring limit block. When the seeds are piled up and just stuck between the edge of the discharge port and the distributor, the radial extrusion force on the distributor will overcome the preload of the return spring, causing it to momentarily retract slightly inward along the groove, widening the gap to allow the material to pass through (at this time, when the transmission gear retracts, it does not mesh with the transmission gear ring). Then, under the action of the spring, it accurately resets and meshes with the transmission gear ring again. This mechanism fundamentally avoids the "shearing" and "extrusion" damage that traditional rigid levers or screws will inevitably produce under the same working conditions, especially protecting the fragile seed coat of peanuts and significantly reducing the hidden risks (decreased germination rate) in the subsequent planting process.

[0010] Furthermore, a sliding base is slidably connected inside the auxiliary frame, and a support ring is provided at the top of the sliding base. The support ring and the top frame are elastically connected by a spring. A disc drive servo motor is provided at the top of the petal-shaped bottom door, and the axis of the petal-shaped bottom door is connected to the output axis of the disc drive servo motor. A torsion spring is provided between the petal-shaped bottom door and the turntable, and a bag-turning device is provided on one side of the main body.

[0011] By adopting the above technical solution, the seed flow after being sorted by the distributor is roughly equally distributed into multiple metering cups carried on a turntable that rotates at a uniform speed intermittently below through a periodically opening and closing discharge port. The metering cup is designed as an inverted frustum shape (flared mouth) that is larger at the top and smaller at the bottom. It can not only receive the material flow from the larger area above, but also form a guide and constriction at the bottom, which is conducive to the initial positioning of the seeds in the cup. At this time, the petal-shaped bottom door of the metering cup is closed under the action of the torsion spring, receiving and storing the seeds.

[0012] Furthermore, a linear motor is provided at the top of the auxiliary frame, and the output end of the linear motor is connected to the sliding base. A fixing ring that is fixed to the main hopper is rotatably connected to the outside of the transmission disk. Micro-amplitude high-frequency vibrators are provided on both sides of the main hopper, and the vibration end of the micro-amplitude high-frequency vibrator is located inside the main hopper. A micro motor is provided inside the main body, and its output end is connected to the worm gear structure.

[0013] By adopting the above technical solution, the turntable is driven by a disc-driven servo motor to perform indexing rotation. When one of the quantitative cups (e.g., the numbered cup) is filled at the "filling station", the turntable rotates one station to move the next empty cup to the filling point, while bringing the full numbered cup into the "static transfer area". This design realizes the spatial separation and time parallelism of multiple stations such as "filling", "transfer", and "unloading". The overall packaging speed of the system depends on the turntable speed and the number of stations, rather than the time spent on weighing or unloading.

[0014] Furthermore, the top of the conveyor belt is equipped with multiple sets of mounting brackets, a high-speed checkweigher is installed on one side of the conveyor belt, a discharge port is installed at the bottom of the main hopper, an RFID reader is installed inside the main body, an RFID tag is fixed on the outside of the turntable, and a main control box is installed on the outside of the main body.

[0015] By adopting the above technical solution, during this process, the RFID reader fixed on the rack reads the RFID tag on the outside of each metering cup at the filling station, binds the unique ID number of the metering cup with the "filling start" timestamp, and enters it into the database of the APM module. This lays the data foundation for establishing a "digital twin" file for each metering cup and realizing full-process single-item-level quality traceability.

[0016] (III) Beneficial Effects Compared with the prior art, the technical solution of the present invention has the following advantages: (1) The present invention replaces the traditional rigid push rod or screw with a quantitative unloading disc mechanism. When the seed is diverted and guided, the mechanism can make a small amount of instantaneous retraction when it encounters a jam, which completely avoids the rigid squeezing, shearing and scraping of the peanut seeds by mechanical parts, thereby protecting the integrity of the seed coat to the greatest extent and significantly reducing the processing damage rate.

[0017] (2) During unloading, the present invention injects a short airflow into the top of the metering cup through the Venturi pulse jet nozzle, and uses the air pressure difference to push the seed group out as a whole, rather than relying on gravity free fall. This method greatly reduces the terminal speed and mechanical impact of the seeds during the falling process, avoids secondary physical damage in the unloading process, and at the same time, the airflow helps to clear the residue on the cup wall, further ensuring the accuracy of measurement.

[0018] (3) This invention adopts a scheme of "multi-cavity parallel volumetric quantification" combined with "high-speed checkweighing feedback and adaptive compensation". On the one hand, the volume is preset by multiple independent quantitative cups and the material density is uniformized by the static station, which improves the basic accuracy of volumetric quantification. On the other hand, the actual discharge of each quantitative cup is monitored and analyzed in real time by a high-speed checkweighing sensor and an APM (adaptive parameter management) module. Based on this, the filling or unloading parameters of specific cups are dynamically fine-tuned, realizing the leap from "open-loop fixed volume" to "closed-loop adaptive compensation". Thus, even when there are large individual differences in peanut seeds, high-precision and high-stability quantification can still be achieved. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial location diagram of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of point A; Figure 4 This is a partial structural schematic diagram of the present invention; Figure 5 This is a partial structural diagram of the present invention; Figure 6 This is a schematic diagram of the internal structure of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of point B; Figure 8 This is a schematic diagram of the feeding tray mechanism of the present invention; Figure 9 This is a partial location diagram of the present invention; Figure 10 For the present invention Figure 9 Enlarged view of point C; Figure 11 This is a schematic diagram of the internal structure of the present invention; Figure 12 For the present invention Figure 11 Enlarged view of point D.

[0020] In the diagram: 1. Main body; 2. Quantitative unloading tray mechanism; 201. Turntable; 202. Quantitative cup; 203. Petal-shaped bottom door; 3. Bag rotating device; 4. High-speed checkweigher; 5. Conveyor belt; 6. Micro-amplitude high-frequency vibrator; 7. Main hopper; 8. Main control box; 9. High-frequency pulse solenoid valve; 10. Venturi pulse jet nozzle; 11. Auxiliary frame; 12. Linear motor; 13. Top frame; 14. Guide tube; 15. Feeding tray machine Structure; 1501, Distributor; 1502, Transmission Gear; 1503, Transmission Gear Ring; 1504, Transmission Disc; 1505, Worm Gear Structure; 1506, Return Spring; 16, Discharge Port; 17, Micro Motor; 18, Drainage Plate; 19, Spring; 20, Support Ring; 21, Bracket; 22, Sliding Base; 23, Disc-Driven Servo Motor; 24, Mounting Bracket; 25, RFID Tag; 26, RFID Reader / Writer. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0022] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "comprising" or "including," and similar terms used in this disclosure, mean that an element or object preceding the term encompasses the elements or objects listed following the term and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0023] like Figures 1 to 12As shown, the present invention provides an automatic peanut seed weighing device, comprising a main body 1, a main hopper 7 inside the main body 1, and a feeding disc mechanism 15 below the main hopper 7. The feeding disc mechanism 15 includes a distributor 1501, a transmission gear 1502, a transmission gear ring 1503, a transmission disc 1504, a worm gear structure 1505, and a return spring 1506. The multi-group distributor 1501 is located at the top of the transmission disc 1504, the transmission gear 1502 is located at the top of the transmission disc 1504, the transmission gear ring 1503 is located at the top of the transmission disc 1504, the transmission disc 1504 is located inside the main hopper 7, the worm gear structure 1505 is located at the bottom of the transmission disc 1504, and the return spring 1506 is located outside the distributor 1501. A quantitative unloading disc mechanism 2 is located inside the main body 1, comprising a turntable 201, a quantitative cup 202, and a petal-shaped bottom door 2. 03. The metering cup 202 is installed inside the main body 1 and at the top of the turntable 201. The petal-shaped bottom door 203 is installed at the bottom of the turntable 201. A top frame 13 is installed at the bottom of the main body 1, and a guide tube 14 is installed inside the top frame 13. After startup, the micro-amplitude high-frequency vibrators 6 installed on both sides of the middle of the main hopper 7 start to work, generating mechanical micro-vibrations of a specific frequency and amplitude. Through micro-vibration, the "bridging" or "jamming" phenomenon that peanut seeds are prone to cause due to their irregular shape can be effectively broken, ensuring that the seed group flows to the discharge port 16 in a continuous and uniform manner, avoiding interruption of the supply from the source, and providing a foundation for subsequent stable metering. The APM module can dynamically adjust the intensity of the micro-amplitude high-frequency vibrator 6 according to the preset initial value of the flow balance coefficient. This coefficient aims to pursue the stability of the supply flow rate, and it will be continuously optimized through system operation data.

[0024] For example, the distributor 1501 is elastically connected by a return spring 1506 and can slide radially on the top of the transmission disc 1504. The transmission gear ring 1503 meshes with the transmission gear 1502. A conveyor belt 5 is provided at the bottom of the main body 1, and an auxiliary frame 11 is provided on the outside of the conveyor belt 5. A high-frequency pulse solenoid valve 9 is provided on the outside of the main body 1, and a Venturi pulse jet nozzle 10 is provided at the bottom of the high-frequency pulse solenoid valve 9. The vibrated peanut seeds fall into the feeding disc mechanism 1 at its tail end through the discharge port 16. 5. This mechanism is crucial to ensuring that seeds are not subjected to rigid damage during high-speed sorting. Its working state and principle are as follows: The micro motor 17 starts, driving the worm gear structure 1505 to rotate, which in turn drives the transmission disk 1504, which is coaxial with the worm gear, to rotate at a low speed. The transmission gear ring 1503, which is fixed on the transmission disk 1504, rotates accordingly, and drives multiple sets of transmission gears 1502 meshing with it to rotate at a higher relative speed. Each transmission gear 1502 has a sorter 1501 coaxially mounted on its shaft end.

[0025] For example, a sliding base 22 is slidably connected inside the auxiliary frame 11. A support ring 20 is provided at the top of the sliding base 22. The support ring 20 and the top frame 13 are elastically connected by a spring 19. A disc-driven servo motor 23 is provided at the top of the petal-shaped bottom door 203, and the axis of the petal-shaped bottom door 203 is connected to the output axis of the disc-driven servo motor 23. A torsion spring is provided between the petal-shaped bottom door 203 and the turntable 201. A bag-turning device 3 is provided on one side of the main body 1. The distributor 1501 rotates at high speed while revolving around the revolution (driven by the transmission gear 1502), gently and continuously "sweeping" the peanut seeds on its movement trajectory to the discharge port 16 at the bottom of the main hopper 7. The protective shell of the feeding disc mechanism 15 is provided with radial grooves. The tail of the distributor 1501 is connected to the limiting block by the return spring 1506. When the seeds are piled up and just stuck between the edge of the discharge port 16 and the distributor 1501, the radial extrusion force on the distributor 1501 will overcome the preload force of the spring 19, causing it to momentarily retract slightly inward along the slide groove, widening the gap to allow the material to pass through (at this time, when the transmission gear 1502 retracts, it will not mesh with the transmission gear ring 1503). Then, under the action of the spring, it will accurately reset and mesh with the transmission gear ring 1503 again. This mechanism fundamentally avoids the "shearing" and "extrusion" damage that traditional rigid levers or screws will inevitably produce under the same working conditions, especially protecting the fragile seed coat of peanuts and significantly reducing the hidden risks (decreased germination rate) in subsequent planting stages.

[0026] For example, a linear motor 12 is provided at the top of the auxiliary frame 11, and the output end of the linear motor 12 is connected to the sliding base 22. A fixed ring fixed to the main hopper 7 is rotatably connected to the outside of the transmission disk 1504. Micro-amplitude high-frequency vibrators 6 are provided on both sides of the main hopper 7, and the vibration end of the micro-amplitude high-frequency vibrator 6 is located inside the main hopper 7. A micro motor 17 is provided inside the main body 1, and its output end is connected to the worm gear structure 1505. The seed stream after being combed by the distributor 1501 is distributed in approximately equal amounts through the periodically opening and closing discharge port 16 to multiple metering cups 202 carried on the turntable 201 that rotates at a uniform speed intermittently below. The metering cups 202 are designed as inverted frustum shapes (flared mouths) with a larger top and a smaller bottom, which can both receive and hold the seed stream. The material flow from the larger area above can form a guiding convergence at the bottom, which is conducive to the initial positioning of the seeds in the cup. At this time, the petal-shaped bottom door 203 at the bottom of the metering cup 202 is closed under the action of the torsion spring, receiving and storing the seeds. The turntable 201 is driven by the disc drive servo motor 23 to perform indexing rotation. When one of the metering cups 202 (e.g., cup No. 1) is filled at the "filling station", the turntable 201 rotates one station to move the next empty cup to the filling point, while bringing the full cup No. 1 into the "static flow area". This design realizes the spatial separation and time parallelism of multiple stations such as "filling", "transfer", and "unloading". The overall packaging speed of the system depends on the turntable speed and the number of stations, rather than the time spent on weighing or unloading alone.

[0027] For example, multiple mounting brackets 24 are provided at the top of the conveyor belt 5, a high-speed checkweigher sensor 4 is provided on one side of the conveyor belt 5, a discharge port 16 is provided at the bottom of the main hopper 7, an RFID reader 26 is provided inside the main body 1, an RFID tag 25 is fixed on the outside of the turntable 201, and a main control box 8 is provided on the outside of the main body 1. The RFID reader 26, fixed on the frame, reads the RFID tag 25 on the outside of each metering cup 202 at the filling station, binds the unique ID number of the metering cup 202 with the "filling start" timestamp, and records... The data is entered into the database of the APM module, which lays the data foundation for establishing a "digital twin" file for each metering cup 202 and realizing full-process single-item quality traceability. When the fully loaded metering cup 202 rotates about 180 degrees with the turntable 201 and reaches the "unloading station", the linear motor 12 starts and pushes the sliding base 22 to move vertically upward along the bracket 21. The support ring 20 at the top of the sliding base 22 rises accordingly and pushes the top frame 13 upward through the spring 19 set inside it. The top of the top frame 13 is designed with an opening that matches the shape of the petal-shaped bottom door 203.

[0028] The working principle and usage process of this invention: The entire system is started by the main control box 8. Subsequently, the staff pour the batch of peanut seeds into the main hopper 7 at the top of the main body 1 of the equipment and set basic parameters such as target single package weight and packaging speed. The adaptive parameter management module in the main control box 8 then loads the initial parameter template of the corresponding variety, and the equipment enters the standby self-test state. After startup, the micro-amplitude high-frequency vibrators 6 installed on both sides of the middle of the main hopper 7 begin to work, generating mechanical micro-vibrations of a specific frequency and amplitude. Through micro-vibration, the "bridging" or "jamming" phenomenon that peanut seeds are prone to cause due to their irregular shape can be effectively broken, ensuring that the seed group flows to the discharge port 16 in a continuous and uniform manner, avoiding interruption of the supply from the source, and providing a foundation for subsequent stable quantitative feeding. The APM module can dynamically adjust the intensity of the micro-amplitude high-frequency vibrator 6 according to the preset initial value of the flow balance coefficient. This coefficient aims to pursue the stability of the supply flow rate, and it will be continuously optimized through system operation data in the future. Vibrated peanut seeds fall into the feeding tray mechanism 15 at its tail end through the discharge port 16. This mechanism is the key to ensure that the seeds are not rigidly damaged during high-speed sorting. Its working state and principle are as follows: The micro motor 17 starts and drives the worm gear structure 1505 to rotate, which in turn drives the transmission disk 1504, which is coaxial with the worm gear, to rotate at a low speed. The transmission gear ring 1503 fixed on the transmission disk 1504 rotates accordingly and drives multiple sets of transmission gears 1502 meshing with it to rotate at a higher relative speed. Each transmission gear 1502 has a sorter 1501 coaxially mounted on its shaft end. While revolving around the central axis, the distributor 1501 rotates at high speed (driven by the transmission gear 1502), gently and continuously "sweeping" the peanut seeds along its trajectory to the discharge port 16 at the bottom of the main hopper 7. The protective shell of the feeding tray mechanism 15 is equipped with radial grooves. The tail of each distributor 1501 is connected by a limit block via a return spring 1506. When the accumulated seeds are precisely stuck between the edge of the discharge port 16 and the distributor 1501, the radial pressure on the distributor 1501 will overcome the preload of the spring 19. The tension causes the material to momentarily retract slightly inward along the groove, widening the gap to allow the material to pass through (at this time, when the transmission gear 1502 retracts, it does not mesh with the transmission gear ring 1503). Then, under the action of the spring, it precisely resets and meshes with the transmission gear ring 1503 again. This mechanism fundamentally avoids the "shearing" and "squeezing" damage that traditional rigid levers or screws would inevitably produce under the same working conditions, especially protecting the fragile seed coat of peanuts and significantly reducing the hidden risks (decreased germination rate) in subsequent planting stages. After being sorted by the distributor 1501, the seed stream is distributed in roughly equal amounts through the periodically opening and closing outlet 16 into multiple metering cups 202 carried on the turntable 201 that rotates at a uniform speed intermittently directly below. The metering cup 202 is designed as an inverted frustum shape (flared mouth) with a larger top and a smaller bottom, which can not only receive the larger material stream from above, but also form a guide and constriction at the bottom, which is conducive to the initial positioning of the seeds in the cup. At this time, the petal-shaped bottom door 203 at the bottom of the metering cup 202 is closed under the action of the torsion spring, receiving and storing the seeds. The turntable 201 is driven by the disc drive servo motor 23 to perform indexing rotation. When one of the quantitative cups 202 (e.g., cup number one) is filled at the "filling station", the turntable 201 rotates one station to move the next empty cup to the filling point, while bringing the full cup number one into the "static flow area". This design realizes the spatial separation and time parallelism of multiple stations such as "filling", "transfer" and "unloading". The overall packaging speed of the system depends on the turntable speed and the number of stations, rather than the time spent on weighing or unloading. During this process, the RFID reader 26 fixed on the rack reads the RFID tag 25 on the outside of each metering cup 202 at the filling station, binds the unique ID number of the metering cup 202 with the "filling start" timestamp, and enters it into the database of the APM module. This lays the data foundation for establishing a "digital twin" file for each metering cup 202 and realizing full-process single-item-level quality traceability. When the fully loaded metering cup 202 rotates about 180 degrees with the turntable 201 and reaches the "unloading station", the linear motor 12 starts and pushes the sliding base 22 to move vertically upward along the bracket 21. The support ring 20 at the top of the sliding base 22 rises accordingly and pushes the top frame 13 upward through the spring 19 inside it. The top of the top frame 13 is designed with an opening that matches the shape of the petal-shaped bottom door 203. First, the top frame 13 moves upward, and the inclined surface of its irregular opening contacts the petal-shaped bottom door 203, forcing the petal-shaped bottom door to overcome the torsion spring force and retract inward, opening the discharge channel. The key point is that when the petal-shaped bottom door 203 is fully pushed open to the maximum stroke, the sliding base 22 will continue to rise a short distance under the drive of the linear motor 12. At this time, the spring 19 is compressed, which plays the role of stroke buffering and pressure adaptive adjustment, avoiding hard interference and wear of rigid components (top frame 13 and petal-shaped bottom door 203), and ensuring the reliability of long-term use. Almost simultaneously with the opening of the bottom door, the main control system, based on the positioning signal from the high-precision encoder, triggers the high-frequency pulse solenoid valve 9. The solenoid valve opens instantly, and a pulse of dry compressed air, lasting 20 to 50 milliseconds, is injected vertically downwards into the top cavity of the metering cup 202 through the Venturi pulse jet nozzle 10 at precisely controlled pressure. The airflow effect generated by the Venturi structure creates a brief positive pressure in the upper part of the cup and a negative pressure at the lower outlet. This mechanism does not rely on gravity to allow the seeds to fall freely (which is prone to impact damage and residue), but uses this pressure difference like an "invisible piston" to gently and quickly "push" the entire cup of seeds out of the metering cup 202 and slide them into the packaging bag along the guide tube 14 below the top frame 13. This method achieves material emptying, eliminates the problem of residue hanging on the wall caused by electrostatic adsorption or grease adhesion, and ensures the ultimate metering accuracy of "how much is filled, how much is discharged." At the same time, the seeds are "slid" out rather than "dropped," further avoiding physical damage during the unloading process. The seed stream that slides out from the guide tube 14 falls into the packaging bag and then passes through the high-speed checkweigher 4 on the conveyor belt 5. The sensor captures the actual net weight of this unloading at a speed of milliseconds and transmits it to the APM module in real time. First, it compares the actual weight value of this checkweighing with the previously bound quantitative cup 202ID and target weight, calculates the single-time deviation, and updates the long-term deviation data sequence of the quantitative cup 202. Based on this sequence, using a specific attenuation weighting algorithm (the attenuation weighting algorithm is an existing technology, the core meaning of which is that the more recent the data, the more important it is for judging the current state, and the greater its weight; the influence of older data attenuates exponentially), the APM module dynamically calculates and updates the "cavity efficiency index" (E_) of the quantitative cup 202. The APM module digitally models the individual differences of each metering cup 202 due to minor inner wall wear and shape changes caused by long-term use. If the APM module detects that the E_cavity value of a metering cup 202 with a certain ID shows a downward trend (i.e., continuous slight underweight), it will automatically and individually fine-tune the opening duration or air pressure setting value of its corresponding high-frequency pulse solenoid valve 9, as well as adjust the real-time speed of the micro motor 17 and the opening and closing duration of the discharge port 16 before the cup runs to the unloading station for the next time, to perform "one-to-one" compensation calibration. Meanwhile, the pre-set environmental sensors integrated into the equipment feed data back to the APM module, which calculates the "environmental operating coefficient (K_env)". The APM module combines K_env, real-time dust concentration, and filter pressure difference to dynamically manage the dust removal system. For example, during the dry season (high K_env), the dust removal fan is instructed to increase its base speed. During each pulse jet unloading (the main dust emission point), the externally preset fan is simultaneously instructed to run at a short-term overclock to achieve "fixed-point instant dust removal". The beneficial effect of this linkage strategy is that while ensuring the best cleaning effect, it extends the filter life and ensures the long-term cleanliness and reliable operation of the equipment's internal components (especially optical sensors such as the RFID reader 26). Finally, the weighed seed bags are conveyed by conveyor belt 5 to the bag transfer device 3 for bagging and sealing. At the same time, the system sends a data packet containing traceability code, cup ID, actual weight, and production timestamp to the inkjet printer to complete the information coding.

[0029] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. An automatic peanut seed weighing device, comprising a main body (1), wherein a main hopper (7) and a feeding tray mechanism (15) located below the main hopper (7) are provided inside the main body (1), and a quantitative unloading tray mechanism (2) is also provided inside the main body (1), characterized in that: The feeding tray mechanism (15) includes a transmission tray (1504) and a multi-group distributor (1501) disposed at the top of the transmission tray (1504). The distributor (1501) is configured to generate radial elastic displacement relative to the transmission tray (1504) when distributing materials as the transmission tray (1504) rotates, so as to form an obstacle-avoiding mechanism. A pneumatic unloading assembly is provided on the outside of the main body (1). The output end of the pneumatic unloading assembly corresponds to the unloading position of the quantitative unloading tray mechanism (2) and is used to assist the discharge of materials by airflow.

2. The automatic peanut seed weighing device according to claim 1, characterized in that: The feeding disc mechanism (15) further includes a transmission gear (1502), a transmission gear ring (1503), and a worm gear structure (1505); the worm gear structure (1505) is set at the bottom of the transmission disc (1504) to drive the transmission disc (1504) to revolve; the transmission gear ring (1503) is fixedly set, the transmission gear (1502) is rotatably connected to the transmission disc (1504) and meshes with the transmission gear ring (1503); the distributor (1501) is connected to the transmission gear (1502) so that it can rotate while revolving, and a bracket (21) is set on one side of the main body (1).

3. The automatic peanut seed weighing device according to claim 1, characterized in that: A return spring (1506) is provided on the outside of the distributor (1501). The distributor (1501) is elastically connected to the mounting structure on the transmission disc (1504) through the return spring (1506). When the distributor (1501) gets stuck with the edge of the discharge port (16) of the main hopper (7), the distributor (1501) compresses the return spring (1506) and slides radially inward.

4. An automatic peanut seed weighing device according to claim 1, characterized in that: The pneumatic unloading assembly includes a high-frequency pulse solenoid valve (9) and a Venturi pulse jet nozzle (10) connected to its bottom end; the quantitative unloading disc mechanism (2) includes a turntable (201) and multiple quantitative cups (202) arranged in a circular array on the turntable (201). The quantitative cups (202) are in the shape of an inverted frustum with a larger top and a smaller bottom. When the quantitative cups (202) rotate to the unloading position, the Venturi pulse jet nozzle (10) is located directly above the quantitative cups (202). The axis of the turntable (201) is coaxially connected to the disc drive servo motor (23).

5. An automatic peanut seed weighing device according to claim 4, characterized in that: The bottom of the metering cup (202) is provided with a petal-shaped bottom door (203), and a torsion spring is connected between the petal-shaped bottom door (203) and the turntable (201) to keep it in a normally closed state; the bottom of the main body (1) is provided with a top frame (13) corresponding to the unloading station, the top frame (13) is used to lift upward to open the petal-shaped bottom door (203), and the top frame (13) is connected to a guide tube (14).

6. An automatic peanut seed weighing device according to claim 5, characterized in that: The main body (1) is provided with a conveyor belt (5) at the bottom, and an auxiliary frame (11) is provided on the outside of the conveyor belt (5). A lifting drive mechanism is provided on the auxiliary frame (11). The lifting drive mechanism includes a linear motor (12) and a sliding base (22) slidably connected in the auxiliary frame (11). The output end of the linear motor (12) is connected to the sliding base (22). The top of the sliding base (22) is connected to a support ring (20) through a spring (19). The support ring (20) is connected to the top frame (13). Flexible lifting and opening are achieved through the spring (19).

7. The automatic peanut seed weighing device according to claim 1, characterized in that: The outer walls on both sides of the main hopper (7) are provided with micro-amplitude high-frequency vibrators (6), and the vibration end of the micro-amplitude high-frequency vibrator (6) extends into the interior of the main hopper (7); the body (1) is provided with a micro motor (17), and the output end of the micro motor (17) is connected to the feeding plate mechanism (15) for transmission.

8. The automatic peanut seed weighing device according to claim 1, characterized in that: The bottom of the main body (1) is provided with a conveyor belt (5), and a high-speed checkweigher (4) is provided on one side of the conveyor belt (5) for real-time weighing of the packaging after unloading. The outside of the main body (1) is provided with a main control box (8), which is electrically connected to the pneumatic unloading assembly and the high-speed checkweigher (4) respectively, for adjusting the unloading parameters according to the weighing feedback. Mounting brackets (24) are provided on both sides of the conveyor belt (5).

9. The automatic peanut seed weighing device according to claim 1, characterized in that: An RFID reader (26) is installed inside the main body (1) at the filling station of the corresponding quantitative unloading tray mechanism (2). An RFID tag (25) is fixed on the outside of the turntable (201) or quantitative cup (202) of the quantitative unloading tray mechanism (2) for independent identification and data traceability of each quantitative cup (202).

10. An automatic peanut seed weighing device according to any one of claims 1 to 9, characterized in that: The main body (1) is also provided with a bag-turning device (3) on one side, which is used to receive the material discharged from the guide tube (14); the main hopper (7) is provided with a guide plate (18) to assist in the guidance of the material.

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