A smart color sorter for discolored millet seeds and its screening method

Abstract

This invention belongs to the technical field of seed sorting equipment, specifically an intelligent color sorter for discolored millet seeds and its sorting method. It aims to solve the problems of long sorting processes, high energy consumption, poor handling of caking, interference from hard soil balls, and electrostatic interference in traditional millet seed sorting. The color sorter includes a base, a storage hopper, and an inclined panel above the base. Multiple heat-conducting boxes with arc-shaped tops are embedded in the inclined panel. The vibration of the inclined panel disperses caking seeds. A sealing plate for intermittent discharge is located below the storage hopper. A pair of vertically arranged rubber rollers and a rotating roller are installed between two support frames. The elasticity of the rubber rollers and the rigidity of the rotating rollers compress the inelastic hard soil balls as they pass through the gaps. A conductive soft brush is located below the flat plate, and a grounded copper conductive strip is embedded in the sliding trough. This color sorter can solve the problems of moisture seed caking, the mixing of hard soil balls, and electrostatic interference in identification.

Description

Technical Field

[0001] This invention relates to the field of seed sorting equipment technology, and in particular to an intelligent color sorter for different colored millet seeds and its screening method. Background Technology

[0002] After harvesting and initial processing, millet seeds are often mixed with discolored grains, broken grains, and impurities. These discolored grains can affect the purity and market value of the final product, so they need to be sorted using color sorting equipment.

[0003] Existing color sorters have several technical problems when processing small particulate materials such as millet seeds: during storage or transportation, the seeds may absorb moisture, causing the particles to stick together due to surface water film tension, forming small seed clumps. When these seed clumps enter the visual recognition area of ​​the color sorter, they will obscure the true color of the seeds inside, causing the optical sensor to misjudge and mistakenly blow good seeds into the defective ones, or miss the wrapped discolored particles. The traditional solution is to use a large drying tower to dry the seeds centrally before color sorting, but this increases the length of the process, equipment investment and energy consumption. In addition, the seeds may contain hard soil balls that are similar in size and shape to the seeds. These soil balls do not have the elasticity of the seeds, are hard and brittle, and conventional color sorters cannot effectively distinguish between hard soil balls and normal seeds. Soil balls will interfere with the color sorting accuracy and may damage the equipment in subsequent processing. Meanwhile, in a dry environment, during the vibrating feeding and chute descent of the seeds, a large amount of static electricity is generated due to friction between particles and with the equipment. Static electricity can cause the seeds to deviate, stick to the wall, or repel each other on the sliding plate, which will disrupt the uniformity and stability of the seed flow and directly affect the accuracy of subsequent visual recognition. Although an ion fan can be used to eliminate static electricity, the high-speed airflow it generates will disturb the falling trajectory of the extremely light millet seeds, thus introducing new errors. Summary of the Invention

[0004] This invention addresses the industry pain points of traditional millet seed color sorters, such as long processing times, high energy consumption, inability to remove hard soil balls, and airflow interference caused by electrostatic elimination. During the research and development process, it was discovered that existing technologies use independent electrically heated drying chambers, which are energy-intensive and have long processing times, and cannot handle hard soil balls similar in shape to seeds; while the ion fan electrostatic elimination solution generates airflow disturbances, severely affecting the falling trajectory of lightweight seeds like millet.

[0005] This invention organically integrates intermittent discharge, vibratory spreading, online waste heat drying, agglomeration dispersion, elastic crushing, soil screening, airless electrostatic elimination, and double-sided color sorting. It drives the coordinated linkage of discharge and vibration, utilizes factory waste heat as the drying heat source, and uses the elastic difference between rubber rollers and rotating rollers to achieve non-destructive crushing of soil balls. It eliminates static electricity through a synchronous upper and lower contact structure, thus proposing an intelligent color sorter for discolored millet seeds and its screening method.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A smart color sorter for discolored millet seeds includes: Base; Two support frames are fixed to the top of the base; The frame body is fixed to the top of the two support frames; A storage hopper is fixedly inserted through the frame body; An inclined panel is disposed between the two support frames; A discharge mechanism is located below the storage hopper. The discharge mechanism includes a discharge port, a sealing plate, and a drying mechanism. The discharge port is located at the bottom of the storage hopper. The sealing plate is slidably connected to the bottom of the storage hopper and is used to intermittently close the discharge port. The drying mechanism can dry the seeds and separate the stuck seeds. A crushing mechanism is provided between the two support frames. The crushing mechanism includes a rubber drum and a rotating roller. The rubber drum and the rotating roller are arranged vertically and rotatably connected between the two support frames. Both the rubber drum and the rotating roller are located on the side of the discharge mechanism away from the storage hopper. The screening mechanism includes a material trough plate, which is fixed between two support frames. The crushing mechanism cooperates with the material trough plate to discharge seeds after removing hard soil balls onto the material trough plate.

[0007] In one possible design, the material discharge mechanism further includes a connecting plate, a vertical rod, a tension spring, a raised strip II, a guide plate, a base plate, a reciprocating threaded rod, a U-shaped plate, and raised strip I. The connecting plate is fixed between the two support frames. The vertical rod slides through the connecting plate, and the top end of the vertical rod is fixedly connected to the bottom of the inclined panel. The tension spring is fixed between the bottom of the inclined panel and the top of the connecting plate via a spring seat, and the tension spring is sleeved on the outer wall of the vertical rod. Multiple raised strips II are equidistantly fixed to the bottom of the inclined panel, and the guide plate is fixed to the sealing plate. At the bottom, the guide plate has a hole for the inclined panel to pass through. The base plate is fixed to the bottom of the guide plate. The reciprocating threaded rod is rotatably connected between the two support frames through the base plate. A slider is fixed inside the base plate, and the slider slides in cooperation with the reciprocating helical groove on the reciprocating threaded rod. The rotation of the reciprocating threaded rod can drive the base plate to move. The U-shaped plate is fixed to the bottom of the guide plate. One end of the inclined panel passes through the U-shaped plate. The protrusion I is fixed to the bottom inner wall of the U-shaped plate, and the protrusion I cooperates with a plurality of protrusions II to drive the inclined panel to move upward. When the reciprocating threaded rod rotates, it drives the sealing plate and the guide plate to move back and forth. The sealing plate intermittently opens and closes the discharge port. When the guide plate moves, it drives the U-shaped plate and the protrusion I to move. The protrusion I and the protrusion II cooperate to drive the inclined panel to move upward. The tension spring applies a pulling force to the inclined panel to reset it, thereby causing the inclined panel to move up and down and vibrate.

[0008] In one possible design, the drying mechanism includes a heat-conducting box, a connecting pipe, and a manifold. Multiple heat-conducting boxes are fixedly embedded within the inclined panel. The top of each heat-conducting box has an arc-shaped protrusion. The connecting pipe includes an inlet pipe and an outlet pipe, respectively fixedly connected to opposite ends of the heat-conducting box. Two manifolds are respectively located on opposite sides of the two support frames. One manifold is connected to a heat source supply end and injects a heat source medium into the heat-conducting box through the connecting pipe (which serves as the inlet pipe). The other manifold is connected to a heat source recovery end and discharges the heat source medium through the connecting pipe (which serves as the outlet pipe). The end of the connecting pipe furthest from the heat-conducting box is fixedly connected to the corresponding manifold. The connecting pipe is a flexible heat-conducting hose. When the clumps of seeds are heated on the heat-conducting box, their viscosity decreases. As they pass through the heat-conducting box with the vibration of the inclined panel, the arc-shaped protrusion at the top of the heat-conducting box causes the seed clumps, which have lost their water film adhesion, to disperse.

[0009] In one possible design, the crushing mechanism further includes an inclined plate I, an inclined plate II, a screen, and a collection box. The inclined plate I and the inclined plate II are fixed between the two support frames. The side of the inclined plate I near the storage hopper is slidably connected to one end of the inclined panel. The end of the inclined plate I away from the inclined panel extends between the rotating roller and the rubber roller, for guiding the seeds on the inclined panel to the space between the rotating roller and the rubber roller. The inclined plate II is located on the side of the rotating roller and the rubber roller away from the inclined panel, for guiding the seeds between the rotating roller and the rubber roller to the sliding trough plate. The screen is fixedly embedded in the inclined plate II for separating the seeds from the crushed soil balls. The collection box is fixed to the bottom of the inclined plate II by bolts and cooperates with the screen for collecting soil ball fragments. The hard clay balls are crushed into powder as they pass through the gap between the rotating roller and the rubber roller, and are then sieved by the screen as they pass through the inclined plate II and collected by the collection box.

[0010] In one possible design, the screening mechanism further includes a sealed box, a feed port, mounting plate I, an upper camera, a lower camera, and supplementary lighting fixtures. The sealed box is fixed between two support frames. The feed port is located at the top of the sealed box. The bottom end of the sliding trough plate passes through the feed port and extends into the sealed box for discharging seeds into the sealed box. The two mounting plates I are fixed inside the sealed box and located on both sides of the feed port. Multiple upper cameras and multiple lower cameras are respectively fixed on the side of the two mounting plates I that are close to each other for visual identification of seeds entering the sealed box. Four supplementary lighting fixtures are fixed inside the sealed box. The four supplementary lighting fixtures are arranged in pairs, with the two supplementary lighting fixtures in the same pair providing supplementary lighting for the upper camera and the lower camera, respectively.

[0011] In one possible design, the screening mechanism further includes a grid panel, a discharge channel, a mounting plate II, nozzles, a good product collection box, and a defective product collection box. The grid panel is fixed inside the sealed box and located below the sliding chute plate, and below the shooting direction of the lower camera and the upper camera, for guiding the photographed seeds. The discharge channel is located at the bottom of the sealed box and cooperates with the grid panel for discharging the seeds guided by the grid panel. The mounting plate II is fixed to the inner wall of the discharge channel near the lower camera. Multiple nozzles are fixed to the mounting plate II near the upper camera for blowing defective seeds to one side. The good product collection box and the defective product collection box are fixed to the top of the base and are both located below the discharge channel. The defective product collection box is located on the side of the good product collection box near the upper camera. When the seeds are good quality, they are collected by the good quality collection box through the grid panel and the discharge channel. When the seeds are defective, they are blown towards the defective collection box by the gas sprayed from the nozzle as they fall through the discharge channel.

[0012] In one possible design, a guide post is fixed to the top of the connecting plate via a base plate, and one end of the guide post slides through the U-shaped plate to allow the U-shaped plate to slide smoothly; the heat-conducting box is made of copper.

[0013] In one possible design, a backrest plate is fixed between the two support frames, and the side of the material chute plate away from the storage hopper is fixedly connected to the backrest plate to support the material chute plate.

[0014] In one possible design, the system further includes a horizontal plate, connecting posts, a flat plate, a conductive soft brush, a copper conductive strip, and a grounding wire. Two horizontal plates are respectively fixed within two support frames. Multiple connecting posts are fixed to the bottom of the horizontal plates. The flat plate is fixed to the bottom of two corresponding connecting posts. The conductive soft brush is fixed to the bottom of the flat plate; the conductive soft brush is a carbon fiber conductive brush. Multiple copper conductive strips are fixedly embedded within the material trough plate. The side of the copper conductive strip closest to the conductive soft brush has an arc-shaped protrusion to ensure that the seeds on the material trough plate fully contact the copper conductive strip. The grounding wire is located on the side of the material trough plate away from the conductive soft brush and connected to the copper conductive strip; the grounding wire is grounded. As the seed slides down the sliding trough, its bottom rubs against the copper conductive strip, and static electricity is conducted to the ground through the grounding wire. The top is swept away by the conductive soft brush, which removes the charge.

[0015] A method for screening heterochromatic grains of millet seeds using an intelligent color sorter, comprising the following steps: S1. Pour millet seeds into the storage hopper, pile them at the bottom and cover the discharge port. The motor drives the reciprocating threaded rod to rotate, and through the slider in the bottom plate, drive the bottom plate, guide plate, sealing plate and U-shaped plate to move horizontally back and forth. The sealing plate intermittently opens or closes the discharge port, so that the seeds are discharged evenly and in a small flow to the guide plate, and then guided to the starting end of the inclined panel. S2. When the U-shaped plate moves, the protrusions I and II on it contact and lift in sequence, overcoming the tension of the tension spring to move the inclined panel upward; after it separates, the spring pulls it back, forming continuous vibration, which disperses, flattens and slowly slides the seeds along the inclined direction. S3. Seeds flow through the copper heat-conducting box inside the inclined panel. External waste heat heats the box to the set temperature through the injection pipe, manifold and connecting pipe. The heat breaks the viscosity of the water film on the seed surface. The arc-shaped convex top causes the small seed clumps to disperse into individual seeds. After drying, the seeds continue to move forward. S4. The seeds slide down to inclined plate I and are introduced into the gap between the rotating roller and the rubber roller. The seeds pass through the rubber due to the elastic compression, and the hard soil balls are crushed into powder. The mixture falls onto the screen on inclined plate II. The soil powder passes through the mesh and falls into the collection box. The intact seeds slide along inclined plate II to the starting end of the material trough. S5. The seed slides on the sliding chute plate and rubs against the arc-shaped protrusions of the copper conductive strip in sequence. Static electricity is discharged through the grounding wire. At the same time, the conductive soft brush sweeps over the top and side of the seed, absorbs residual static electricity and conducts it to the ground through the flat plate, connecting column, horizontal plate and support frame. There is no airflow interference, which ensures that the seed slides in a straight line. S6. Seeds enter the sealed box through the feed port. The upper and lower cameras collect images in real time under the illumination of the supplementary lighting fixtures and transmit them to the external industrial controller. The images are compared with the preset characteristic thresholds of good and discolored seeds for real-time judgment. S7. Good quality seeds fall into the good quality collection box along the grid panel and discharge channel. When a defective product is identified, high-pressure gas is sprayed through the nozzle to blow the defective product away from its original trajectory and into the defective product collection box. Good quality seeds continue to fall into the good quality collection box along their original trajectory, thus completing continuous sorting.

[0016] Beneficial effects: In this invention, a drying mechanism consisting of a heat-conducting box, connecting pipe and manifold is set in the discharge mechanism, and waste heat source from the factory is used as the heat medium to heat the seeds sliding on the inclined panel online, thereby breaking the water film tension between the seeds. Combined with the vibration of the inclined panel and the arc-shaped protrusion on the top of the heat-conducting box, the seed clumps that are stuck together due to moisture are physically dispersed, which solves the problem of the clumped seeds blocking the internal discolored particles and causing the color sorting accuracy to decrease. At the same time, the large drying tower at the front end of the traditional color sorting process is eliminated, shortening the process and saving energy. In this invention, a crushing mechanism consisting of a rotating roller and a rubber roller is set up. The elastic deformation of the rubber roller and the rigid extrusion of the rotating roller allow the elastic millet seeds to pass through the gap without damage, while the hard, inelastic soil balls mixed in are crushed first. Combined with the inclined plate II with a screen filter, the soil powder is separated and collected. This removes impurities that are similar in shape to the seeds but have different physical properties from a physical perspective, thus avoiding soil balls from interfering with subsequent visual recognition or damaging downstream equipment. In this invention, a conductive soft brush, fixed by a horizontal plate, connecting column, and flat plate, is set above the sliding trough plate. A copper conductive strip is embedded in the sliding trough plate and connected to a grounding wire, forming a physical structure that allows for simultaneous contact-type electrostatic discharge of the upper and lower surfaces of the seeds. This eliminates the need for an ion fan, avoids interference from airflow on the falling trajectory of the lightweight millet seeds, and effectively eliminates seed deviation, adhesion to the wall, and mutual adsorption caused by static electricity in dry winter environments, ensuring the uniformity and stability of the seed flow entering the visual recognition area. In this invention, the material feeding mechanism employs a sealing plate and a guide plate driven by a reciprocating threaded rod, as well as a vibrating tilting panel driven by convex bar I and convex bar II, which realizes the integrated linkage of intermittent feeding and vibrating spreading, controls the amount of material fed, avoids seed stacking, and provides an ideal material flow state of single layer or near single layer for subsequent drying, crushing and color sorting.

[0017] In this invention, damp, clump-like seeds are dispersed online using waste heat sources, and hardened soil balls are removed non-destructively through physical means. Static electricity is eliminated using a contact method without airflow interference. These structures work together to improve seed flowability and single-layer spreading during color sorting, ensuring that the optical recognition system can acquire clear and accurate seed images. Ultimately, this achieves high-precision and high-efficiency sorting of discolored grains in millet seeds. Attached Figure Description

[0018] Figure 1 A three-dimensional structural schematic diagram of an intelligent color sorter for different colored grains of millet seeds provided by the present invention; Figure 2 This is a three-dimensional exploded view of an intelligent color sorter for different colored grains of millet seeds provided by the present invention. Figure 3 This is a cross-sectional structural schematic diagram of an intelligent color sorter for different colored grains of millet seeds provided by the present invention; Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 for Figure 3 Enlarged structural diagram at point B; Figure 6This is a three-dimensional exploded view of the inclined plate I, the inclined panel, and the guide plate of an intelligent color sorter for different colored grains of millet seeds provided by the present invention. Figure 7 This is a three-dimensional exploded view of the inclined panel, U-shaped plate, and connecting plate of an intelligent color sorter for different colored grains of millet seeds provided by the present invention. Figure 8 A three-dimensional structural diagram of the convex strip II, U-shaped plate and guide plate of the intelligent color sorter for different colored grains of millet seeds provided by the present invention; Figure 9 A three-dimensional cross-sectional view of the rubber roller and screen of a smart color sorter for different colored grains of millet seeds provided by the present invention. Figure 10 This is a three-dimensional exploded structural diagram of the sliding trough and the sealed box of a smart color sorter for different colored grains of millet seeds provided by the present invention. Figure 11 This is a three-dimensional exploded view of the sliding trough, flat plate, and grounding wire of an intelligent color sorter for different colored millet seeds provided by the present invention. Figure 12 This is a three-dimensional cross-sectional view of the sealed box and mounting plate I of a smart color sorter for different colored millet seeds provided by the present invention.

[0019] In the diagram: 1. Base; 2. Support frame; 3. Frame body; 4. Storage hopper; 5. Discharge port; 6. Connecting plate; 7. Upright pole; 8. Tension spring; 9. Inclined panel; 10. Sealing plate; 11. Guide plate; 12. Base plate; 13. Reciprocating threaded rod; 14. Vertical plate; 15. U-shaped plate; 16. Protrusion I; 17. Protrusion II; 18. Guide column; 19. Heat-conducting box body; 20. Connecting pipe; 21. Manifold body; 22. Inclined plate I; 23. Rotating roller; 24. Rubber roller; 25. Inclined plate II; 2 6. Screen; 27. Collection box; 28. Back panel; 29. ​​Material chute; 30. Sealed box; 31. Feed port; 32. Mounting plate I; 33. Upper camera; 34. Lower camera; 35. Supplementary lighting; 36. Grille panel; 37. Discharge channel; 38. Mounting plate II; 39. Nozzle; 40. Good product collection box; 41. Defective product collection box; 42. Horizontal plate; 43. Connecting column; 44. Flat plate; 45. Conductive soft brush; 46. Copper conductive strip; 47. Grounding wire. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] In one embodiment: Refer to Figures 1-3 A smart color sorter for different colored millet seeds is disclosed, relating to the field of seed sorting equipment technology. It mainly includes a base 1, with two support frames 2 fixed to the top of the base 1. The top of the two support frames 2 is fixed with the same frame body 3. A storage hopper 4 is fixed through the frame body 3 to hold the millet seeds to be sorted. An inclined panel 9 is provided between the support frames 2. The inclined panel 9 has a downward tilt angle relative to the horizontal surface, which ranges from, for example, 15 degrees to 25 degrees, so that the seeds can slide down naturally under the action of gravity.

[0022] Reference Figure 3 and Figure 4 Below the storage hopper 4 is a discharge mechanism for discharging seeds. The discharge mechanism includes a discharge port 5 at the bottom of the storage hopper 4, a sealing plate 10 slidably connected to the bottom of the storage hopper 4 for intermittently closing the discharge port 5, and a drying mechanism. The drying mechanism can dry the seeds and separate the stuck seeds.

[0023] Reference Figure 3 , Figure 4 and Figure 8 The material discharge mechanism also includes a connecting plate 6 fixed between two support frames 2. The connecting plate 6 is horizontally arranged, and multiple uprights 7 slide through the connecting plate 6. In this embodiment, there are four uprights 7 arranged in a rectangular shape. The tops of the multiple uprights 7 are fixedly connected to the bottom of the inclined panel 9. Multiple tension springs 8 are fixed between the bottom of the inclined panel 9 and the top of the connecting plate 6 through spring seats. Each tension spring 8 is correspondingly sleeved on the outer wall of a corresponding upright 7. Multiple protrusions II 17 are fixed at equal intervals on the bottom of the inclined panel 9. A guide plate 11 is fixed to the bottom of the sealing plate 10. The guide plate 11 has a hole that allows the inclined panel 9 to pass through, so that the guide plate 11 can reciprocate outside the inclined panel 9. The guide plate 11 is fixed to a base plate 12 at its bottom. A reciprocating threaded rod 13 is rotatably connected between the two support frames 2 via a base plate. A slider is fixed inside the base plate 12, and the slider slides into the reciprocating helical groove on the reciprocating threaded rod 13. The rotation of the reciprocating threaded rod 13 can drive the base plate 12 to move. A vertical plate 14 is fixed to the top of the connecting plate 6. One end of the reciprocating threaded rod 13 is rotatably connected to the vertical plate 14. To prevent dust intrusion, a corrugated dust cover is fitted on the outside of the reciprocating threaded rod 13. A motor for driving the reciprocating threaded rod 13 to rotate is fixed on one side of the vertical plate 14. This motor is preferably a servo motor or a stepper motor to achieve precise speed control.

[0024] Reference Figure 3 , Figure 4 and Figure 8A U-shaped plate 15 is fixed to the bottom of the guide plate 11. One end of the inclined panel 9 passes through the interior of the U-shaped plate 15. A protrusion I 16 is fixed to the inner bottom wall of the U-shaped plate 15. The length direction of the protrusion I 16 is perpendicular to the moving direction of the U-shaped plate 15. The protrusion I 16 corresponds spatially to multiple protrusions II 17 at the bottom of the inclined panel 9. When the U-shaped plate 15 moves horizontally, the protrusion I 16 will contact the multiple protrusions II 17 in sequence and slide relative to each other. The cooperation between the two can drive the inclined panel 9 to move upward against the tension of the tension spring 8. A vertical gap is left between the inner bottom wall of the U-shaped plate 15 and the inclined panel 9, which is sufficient to allow the inclined panel 9 to move freely within the vertical vibration stroke. When the protrusion I 16 is not in contact with the protrusions II 17, the lower surface of the inclined panel 9 is not in contact with the inner bottom wall of the U-shaped plate 15, ensuring that the two motion systems of horizontal drive and vertical vibration do not interfere with each other.

[0025] Specifically, during material feeding, the motor drives the reciprocating threaded rod 13 to rotate. The reciprocating threaded rod 13 drives the base plate 12, guide plate 11, and sealing plate 10 and U-shaped plate 15 fixed on the guide plate 11 to move horizontally back and forth along the axis of the reciprocating threaded rod 13. During the movement, the top surface of the sealing plate 10 intermittently closes or opens the discharge port 5 at the bottom of the storage hopper 4. When the discharge port 5 is open, the seeds in the storage hopper 4 are discharged under gravity, fall onto the guide plate 11 below, and are guided by the guide plate 11 to the starting end of the inclined panel 9. This intermittent discharge method can control the amount of seeds discharged each time, avoiding excessive seed discharge at one time, which would cause serious stacking on the inclined panel 9. While the guide plate 11 moves, the U-shaped plate 15 and its bottom fixed The protruding strip I16 moves together with it. When the protruding strip I16 moves to contact a protruding strip II17, since the top of the protruding strip I16 is an arc surface or a slope, and the bottom of the protruding strip II17 is a corresponding slope, the protruding strip I16 will push the protruding strip II17 upward, thereby driving the entire inclined panel 9 to move upward. At this time, the four tension springs 8 are further stretched. When the protruding strip I16 continues to move and disengages from the current protruding strip II17, the restoring force of the tension spring 8 will quickly pull the inclined panel 9 back to its original position. As the U-shaped plate 15 moves continuously back and forth, the protruding strip I16 and multiple protruding strips II17 continuously come into contact and disengage, thereby causing the inclined panel 9 to generate continuous up and down reciprocating vibration. This vibration can disperse and flatten the seeds falling on the inclined panel 9, and promote the seeds to slide smoothly away from the storage hopper 4.

[0026] Reference Figure 4A guide post 18 is fixed to the top of the connecting plate 6 via a base plate. The axis of the guide post 18 is parallel to the axis of the reciprocating threaded rod 13. One end of the guide post 18 slides through the U-shaped plate 15. The guide post 18 is used to guide the reciprocating sliding of the U-shaped plate 15, ensuring accurate alignment of the protrusion I 16 and the protrusion II 17, so that the U-shaped plate 15 moves smoothly and avoids jamming.

[0027] Reference Figure 4 , Figure 6 and Figure 7 The drying mechanism includes multiple heat-conducting boxes 19 fixedly embedded in the inclined panel 9. These boxes are equidistant along the length of the inclined panel 9. The top surface of each heat-conducting box 19 is arc-shaped, higher in the middle and lower on both sides, and this arc-shaped protrusion extends along the width of the inclined panel 9. The heat-conducting boxes 19 are made of copper, which has extremely high thermal conductivity, enabling rapid heat transfer. Each heat-conducting box 19 has a connecting pipe 20 fixedly connected to both ends. The connecting pipe 20 is used to inject or discharge heat source medium into the heat-conducting box 19. On the side of the two support frames 2 that are far apart from each other, i.e., the left and right sides, there is a... Each manifold 21 has a connecting pipe 20 on the same side, with the end of all connecting pipes 20 away from the heat-conducting box 19 fixedly connected and communicating with the manifold 21 on the same side. One manifold 21 is connected to the waste heat source pipeline of the external factory through a liquid injection pipe. The connecting pipe 20 is a flexible heat-conducting hose, with its two ends connected to the heat-conducting box 19 and the corresponding manifold 21, respectively, to adapt to the vibration of the inclined panel 9. For example, it can be connected to the discharge end of the factory cooling water circulation system or the waste heat recovery pipeline. The other manifold 21 discharges the medium after heat exchange through a drain pipe and can be connected to a recovery device for recycling.

[0028] Specifically, when the seeds fall onto the inclined panel 9 via the discharge mechanism and begin to slide to the far side, the seeds flow over the tops of multiple heat-conducting boxes 19. Hot water or steam from the factory's waste heat source enters the interior of each heat-conducting box 19 through an injection pipe, a manifold 21, and a connecting pipe 20, raising the temperature of the heat-conducting box 19 itself, for example, maintaining it between 35°C and 50°C. When the seeds come into contact with the warm, raised surface of the heat-conducting box 19, the temperature of the water film on the seed surface rises, the surface tension of the water film is broken, and the viscosity decreases accordingly. At the same time, the seeds move forward under the vibration of the inclined panel 9. When they pass over the top of the arc-shaped raised heat-conducting box 19, the original viscosity... The seed clumps, bound together by their natural properties, are subjected to radial forces from the raised surface, causing them to naturally disperse. This purely mechanical structure, which dries seeds by conducting heat from the bottom and physically disperses them through the raised structure at the top, solves the problem of seed clumping at the feeding stage. It eliminates the need for an additional large drying tower at the front end of the color sorter, shortening the process and reducing energy consumption. It should be noted that the vibrating feeder that comes with a conventional color sorter can only provide horizontal vibration, and the shaking force it generates cannot effectively break up the wet, tiny seed clumps that are bound together by the surface tension of the liquid. However, this drying mechanism can effectively distinguish and disperse clumped seeds by combining heat to break up the tension with physical pushing.

[0029] Reference Figure 3 , Figure 6 and Figure 9 A crushing mechanism is provided between the two support frames 2. The crushing mechanism is used to remove hard soil balls mixed in with the seeds, so as to avoid the hard soil balls affecting the accuracy of seed screening in subsequent processes. The crushing mechanism includes a rubber roller 24 and a rotating roller 23 rotatably connected between the two support frames 2. The rubber roller 24 and the rotating roller 23 are arranged vertically, that is, one is above and one is below, forming a preset gap between them. Rotary sealing rings are provided between the end faces of the rotating roller 23 and the rubber roller 24 and the support frame 2. The rubber roller 24 and the rotating roller 23 are both located on the side of the discharge mechanism away from the storage hopper 4. Specifically, the crushing mechanism also includes an inclined plate I 22 and an inclined plate II 25 fixed between the two support frames 2. Two independent drive motors are fixed on one side of one of the support frames 2, which are used to drive the rotating roller 23 and the rubber roller 24 to rotate in a set direction.

[0030] Reference Figure 3 , Figure 6 and Figure 9The inclined plate I 22 has its edge near the storage hopper 4 slidably connected to the lower end of the inclined panel 9, meaning the end of the inclined panel 9 overlaps above or aligns with the starting edge of the inclined plate I 22. This allows seeds to smoothly transition from the inclined panel 9 onto the inclined plate I 22. The end of the inclined plate I 22 away from the inclined panel 9 extends downwards to the gap entrance between the rotating roller 23 and the rubber roller 24, accurately guiding the seeds sliding down from the inclined panel 9 into the gap between the rotating roller 23 and the rubber roller 24. The inclined plate II 25 is located on the other side of the rotating roller 23 and the rubber roller 24 away from the inclined panel 9. The inclined plate II 25 is connected to the rotating roller 23 and the sliding trough plate 29. The inclined plate 25 is used to guide the seeds, after passing through the gap between the rotating roller 23 and the rubber roller 24, onto the sliding trough plate 29. A screen 26 is fixedly embedded in the inclined plate 25. The mesh size of the screen 26 is designed to allow broken soil powder to pass through, while intact millet seeds cannot pass through. A collection box 27 is fixed to the bottom of the inclined plate 25 by bolts. The internal space of the collection box 27 is connected to the bottom of the screen 26 to collect soil fragments falling from the screen 26. The collection box 27 and the inclined plate 25 are detachably connected (e.g., by clips or bolts) to facilitate the periodic cleaning of the soil fragments collected in the box and the unclogging or replacement of the screen 26.

[0031] Specifically, the seed stream, after being discharged and dried, is guided by the inclined panel 9 and the inclined plate I 22, and enters the narrow gap between the rotating roller 23 and the rubber roller 24 in a single layer or near-single layer. The surface of the rotating roller 23 is a hard, smooth metal surface, and the surface of the rubber roller 24 is an industrial rubber with good elasticity. The millet seeds themselves have natural elasticity; when the seeds pass through the gap, they exert pressure on the roller surface of the rubber roller 24, causing the rubber to produce tiny, localized elastic indentations. The seeds pass through the gap without damage due to their own elasticity and the flexible deformation of the rubber. However, the hard soil balls mixed in with the seeds are hard and lack elasticity, making them very brittle. When such soil balls enter the gap between the rotating roller 23 and the rubber roller 24... When there is a rigid gap between the seeds and soil, they cannot be deformed and pass through by squeezing the rubber like seeds. Instead, they are instantly crushed by the rotating rollers into fine powder particles. Then, the material mixed with seeds and soil powder flows onto the inclined plate II 25 below. The seeds and powder slide down the inclined plate II 25 and pass through the screen 26. The soil powder, because its particle size is smaller than the mesh, passes through the screen 26 under the action of gravity and falls into the collection box 27 below for collection. The intact seeds, because their particle size is larger than the mesh, continue to slide down the surface of the inclined plate II 25 to the bottom and finally fall onto the sliding trough plate 29. Through this crushing mechanism, hard soil balls can be physically removed before entering the visual recognition area, ensuring the accuracy of subsequent color sorting operations.

[0032] Reference Figure 2 and Figure 3 In a preferred embodiment, a backing plate 28 is also fixed between the two support frames 2. The side of the sliding trough plate 29 away from the storage hopper 4, that is, the back of the sliding trough plate 29, is fixedly connected to the backing plate 28. The backing plate 28 provides a stable support for the sliding trough plate 29 to prevent it from being displaced or deformed due to seed impact or vibration.

[0033] Reference Figures 1-3 and Figure 10 , Figure 11 The color sorter also includes a screening mechanism, which is used to separate good seeds from defective seeds. The screening mechanism includes a sliding trough plate 29 fixed between two support frames 2. The crushing mechanism cooperates with the sliding trough plate 29 to discharge the seeds after removing hard soil balls towards the sliding trough plate 29. The sliding trough plate 29 itself also has a certain inclination angle, so that the seeds can slide on it by gravity.

[0034] Reference Figures 1-3 and Figure 10 , Figure 11 The screening mechanism also includes a sealed box 30 fixed between two support frames 2. The sealed box 30 is a closed dark box, which forms a light-blocking environment inside to avoid external stray light interfering with optical detection. The top of the sealed box 30 is provided with a feed port 31. The bottom end of the sliding trough plate 29 passes through the feed port 31 and extends into the interior of the sealed box 30 to accurately discharge the seeds into a predetermined position inside the sealed box 30.

[0035] Reference Figure 10 and Figure 11 Inside the sealed box 30, two mounting plates I 32 are fixed. The two mounting plates I 32 are located on both sides of the feed port 31, i.e., they are arranged opposite each other. On the side of the two mounting plates I 32 that are close to each other, multiple upper cameras 33 and multiple lower cameras 34 are fixed respectively. The lenses of the upper cameras 33 face downwards, and the lenses of the lower cameras 34 face upwards. The upper cameras 33 and lower cameras 34 form a pair, which are used to simultaneously perform high-resolution image acquisition and visual recognition of the seeds entering the sealed box 30 from above and below. Four supplementary lights 35 are also fixed inside the sealed box 30. The four supplementary lights 35 are arranged in pairs. Two supplementary lights 35 in one pair are installed on both sides of the upper camera 33 to provide uniform and shadowless illumination for the upper camera 33. Two supplementary lights 35 in the other pair are installed on both sides of the lower camera 34 to provide illumination for the lower camera 34. The supplementary lights 35 are preferably LED light sources with high color rendering index to ensure that the acquired seed color information is true and accurate.

[0036] Reference Figure 3 , Figure 10and Figure 11 The screening mechanism also includes a grid panel 36 fixed inside the sealed box 30. The grid panel 36 is located below the sliding chute 29 and consists of multiple parallel and spaced strips or thin rods forming a chute. The starting end of the grid panel 36 is located directly below the end of the sliding chute 29 to receive seeds sliding down from the sliding chute 29. The grid panel 36 is located below the intersection of the shooting directions of the lower camera 34 and the upper camera 33. When the seeds pass through the visual recognition area, they slide down along the surface of the grid panel 36. The bottom of the sealed box 30 is provided with a discharge channel 37 corresponding to the end position of the grid panel 36. The discharge channel 37 is a downward-opening channel used to discharge the seeds guided down by the grid panel 36 from the sealed box. A mounting plate II 38 is fixed on the inner wall of the discharge channel 37 near the lower camera 34. Multiple nozzles 39 are fixed on the mounting plate II 38, located near the upper camera 33. The multiple nozzles 39 are equidistantly arranged along the width direction of the discharge channel 37, that is, in the direction perpendicular to the direction of seed descent. The nozzles 39 are connected to an external compressed air source through a solenoid valve. The nozzles 39 are used to blow seeds identified as defective to one side, thereby separating good seeds from defective seeds. A good seed collection box 40 and a defective seed collection box 41 are fixed on the top of the base 1. Both the good seed collection box 40 and the defective seed collection box 41 are located at the lower opening of the discharge channel 37. The defective seed collection box 41 is located on the side of the good seed collection box 40 near the upper camera 33.

[0037] Specifically, the seeds discharged from the end of the sliding chute 29 fall onto the grid panel 36 inside the sealed box 30 in a basically single-layer, dispersed state, and slide down along the grid panel 36. During the sliding process, each seed passes through the field of view of the upper camera 33 and the lower camera 34 in sequence. The supplementary lighting 35 provides sufficient illumination. The upper camera 33 and the lower camera 34 simultaneously collect image information such as the surface color and gloss of the seeds and transmit the signals to an external image processing controller, such as an industrial computer. The controller determines whether each seed is a good product or a defective product with an off-color according to a preset color threshold. When a seed determined to be a good product passes through the visual recognition area, it will continue to... The seeds continue to fall freely along the grid panel 36 and the discharge channel 37, eventually landing in the good product collection box 40. When the controller detects a substandard seed, it calculates the time it takes for the seed to reach the spray area of ​​the nozzle 39 based on its falling speed and position. When the substandard seed happens to pass in front of the nozzle 39, the controller instantly opens the solenoid valve of the corresponding nozzle 39, spraying out a burst of high-pressure gas. This gas blows the substandard seed laterally away from its original parabolic trajectory, causing it to be blown towards the side closer to the upper camera 33. The blown-away substandard seed then falls into the substandard collection box 41 under the action of gravity. In this way, the accurate sorting of good and discolored grains in millet seeds is achieved.

[0038] It also includes a PLC or microcontroller unit, with the motor driving the reciprocating threaded rod 13 electrically connected to the controller, and the solenoid valves of the multiple nozzles 39 also electrically connected to the controller. The image signal output terminals of the upper camera 33 and the lower camera 34 are connected to the input terminals of the controller. The controller is configured to: receive image data collected by the upper camera 33 and the lower camera 34, compare it with a preset threshold, calculate the timing of triggering the nozzles 39 in real time based on the seed's falling speed and displacement, and send an opening signal to the corresponding solenoid valve.

[0039] In another embodiment: Refer to Figure 5 , Figure 10 and Figure 11 To address the static electricity problem caused by friction between seeds and the sliding trough plate 29, the color sorter also incorporates a physical anti-static structure. Specifically, a horizontal plate 42 is fixed inside each of the two support frames 2. Multiple connecting posts 43 are fixed to the bottom of each horizontal plate 42. The bottom ends of two corresponding connecting posts 43 on the two support frames 2 are jointly fixed to the same flat plate 44. The length of the flat plate 44 is parallel to the width of the sliding trough plate 29. A conductive soft brush 45 is fixed to the bottom of the flat plate 44. The bristles of the conductive soft brush 45 maintain contact with the upper surface of the sliding trough plate 29, with gaps between the bristles allowing seeds to pass through. The conductive soft brush 45 is preferably made of carbon fiber, which has good conductivity and flexibility and will not damage the seeds.

[0040] Reference Figure 5 , Figure 10 and Figure 11 Multiple copper conductive strips 46 are fixedly embedded in the sliding trough plate 29. The copper conductive strips 46 extend along the length of the sliding trough plate 29, and their top surfaces are flush with or slightly higher than the bearing surface of the sliding trough plate 29. The positions of the copper conductive strips 46 correspond to the conductive soft brush 45 above. The side of the copper conductive strip 46 closest to the conductive soft brush 45, that is, its top surface, is arc-shaped and protruding. This arc-shaped protrusion can cause the seeds sliding on the sliding trough plate 29 to bounce slightly upward, thereby ensuring that the seeds can fully contact the copper conductive strips. The conductive surface of the material trough 29 with strip 46, on the side away from the conductive soft brush 45, i.e. the bottom or side of the material trough 29, is provided with a grounding wire 47 that is electrically connected to all the copper conductive strips 46. The end of the grounding wire 47 is directly connected to the grounding terminal of the equipment to form a reliable grounding path. The conductive soft brush 45 can contact and scrape the top and sides of the seed. Together with the copper conductive strip 46 below, it forms a dual charge discharge path for the upper and lower surfaces of the seed, which helps to reduce the static charge accumulated on the seed.

[0041] Specifically, as the crushed and screened seeds slide downwards on the sliding trough plate 29, the lower surface of the seeds comes into contact with and rubs against the arc-shaped raised surface of the copper conductive strip 46. The static charge carried by the seeds is directly discharged to the ground through the highly conductive copper conductive strip 46 and the grounding wire 47. At the same time, during the sliding process, the top and sides of the seeds come into physical contact with and are swept by the carbon fiber bristles of the conductive soft brush 45 above. The bristles of the conductive soft brush 45 absorb the residual charge on the surface of the seeds and pass through the flat plate 44. The connecting column 43, the horizontal plate 42, and the support frame 2 are ultimately guided to the equipment casing and the ground. This structure achieves synchronous, passive, and physical electrostatic elimination of the upper and lower surfaces of the seeds. Compared with the use of an ion fan, this structure does not generate any airflow disturbance, so it will not interfere with the falling trajectory of the extremely light millet seeds. This is especially important for ensuring color sorting accuracy in a dry air environment, avoiding seed deviation, adhesion to the wall, or mutual adsorption caused by static electricity, and ensuring the uniformity and stability of the seed flow when it enters the sealed box 30.

[0042] A method for screening heterochromatic grains of millet seeds using an intelligent color sorter, comprising the following steps: S1. The millet seeds to be sorted are poured into the storage hopper 4. Under the action of gravity, the seeds accumulate at the bottom of the storage hopper 4 and cover the discharge port 5. The motor fixed on the vertical plate 14 is started, which drives the reciprocating threaded rod 13 to start rotating. As the reciprocating threaded rod 13 rotates, the bottom plate 12 drives the guide plate 11, the sealing plate 10 fixed on the top of the guide plate 11, and the U-shaped plate 15 fixed on the bottom of the guide plate 11 to move horizontally back and forth along the axis of the reciprocating threaded rod 13. During the movement, the top plane of the sealing plate 10 intermittently blocks the flow. Alternatively, the discharge port 5 at the bottom of the storage hopper 4 can be opened. When the sealing plate 10 moves away from below the discharge port 5, the discharge port 5 opens, and a small amount of seeds in the storage hopper 4 are discharged under gravity and fall onto the guide plate 11 below. The guide plate 11 has an inclined flow guiding surface, which guides the falling seeds to the starting end of the inclined panel 9. When the sealing plate 10 moves in the opposite direction and re-closes the discharge port 5, the discharge stops. Through this intermittent discharge method, the seeds in the storage hopper 4 are discharged evenly and in small flow, avoiding a large amount of seeds flowing out at once and forming serious multi-layer stacking on the inclined panel 9. S2. As the guide plate 11 and the U-shaped plate 15 move horizontally back and forth, the protruding strip I 16 fixed to the inner bottom wall of the U-shaped plate 15 moves together with the U-shaped plate 15. When the protruding strip I 16 moves to contact one of the protruding strips II 17, since the top surface of the protruding strip I 16 and the bottom surface of the protruding strip II 17 are both smooth guide slopes, the protruding strip I 16 will push the protruding strip II 17 upward, thereby driving the entire inclined panel 9 to overcome the tension of multiple tension springs 8 and move upward. As the U-shaped plate 15 continues to move, the protruding strip I 16 pushes the protruding strip II 17 upward. When strip I 16 disengages from the currently contacting protrusion II 17, the restoring force of the tension spring 8 quickly pulls the inclined panel 9 back to its initial position. As the U-shaped plate 15 moves back and forth continuously, protrusion I 16 and multiple protrusion II 17 sequentially engage, lift, disengage, and reset in a cyclical action, causing the inclined panel 9 to vibrate continuously up and down. This vibration acts on the seeds falling on the inclined panel 9, causing the seeds to be scattered, flattened, and slowly slide away from the storage hopper 4 along the inclined direction of the inclined panel 9. S3. When the seeds slide to the far side on the inclined panel 9, they flow through multiple copper heat-conducting boxes 19 embedded in the inclined panel 9. Waste heat from the external factory, such as hot water discharged from the cooling system, flows into one of the manifolds 21 through the injection pipe, and then enters the interior of each heat-conducting box 19 through multiple connecting pipes 20 distributed by the manifold 21. The temperature of the heat-conducting box 19 is thus raised and maintained within a set range, such as 40°C. When the seeds come into contact with the top surface of the warm heat-conducting box 19, the temperature of the water film on the seed surface rises, the surface tension of the water film is destroyed, and the viscosity is reduced. At the same time, the top surface of the heat-conducting box 19 is arc-shaped. When the small seed blocks that were originally stuck together due to moisture pass through the arc-shaped protrusion, the curved surface structure of the protrusion applies a radial force that disperses to both sides to the seed blocks, causing the seed blocks to naturally split into individual seeds. After drying and dispersing, the seeds continue to move forward under the action of vibration until they reach the end of the inclined panel 9. S4. Seeds slide from the end of inclined panel 9 onto inclined plate I 22 and are guided along the inclined surface of inclined plate I 22 to the gap entrance between rotating roller 23 and rubber roller 24. Two independent drive motors drive rotating roller 23 and rubber roller 24 to rotate in opposite directions. The surface of rotating roller 23 is hard metal, and the surface of rubber roller 24 is elastic industrial rubber. The gap between them is adjusted to be slightly smaller than the average diameter of a single millet seed. When the seed enters the gap, due to the natural elasticity of the millet seed, the seed will squeeze the roller surface of rubber roller 24, causing the rubber to produce a small elastic indentation, thus allowing the seed to pass through the gap without damage. In contrast, the hard soil ball mixed with the seed is hard and lacks elasticity. When the soil ball enters the same gap between the rotating roller 23 and the rubber roller 24, it cannot cause the rubber roller 24 to deform elastically like a seed. Therefore, it is crushed by the squeezing force applied instantaneously by the two relatively rotating rollers and broken into fine powder. Subsequently, the mixture of seed and soil powder is discharged from the other side of the gap and falls onto the inclined plate II 25 below. The inclined plate II 25 is fitted with a screen 26. When the mixture slides down on the inclined plate II 25, the soil powder, because its particle size is smaller than the mesh size of the screen 26, passes through the screen 26 under the action of gravity and falls into the collection box 27 below to be collected. The intact millet seeds, because their particle size is larger than the mesh size, cannot pass through the screen 26 and therefore continue to slide along the surface of the inclined plate II 25 to the bottom, and finally fall to the starting end of the sliding trough plate 29. S5. The seed slides downwards on the sliding chute 29 under its own weight. During the sliding process, the seed passes through a set of physical electrostatic elimination structures. The sliding chute 29 is embedded with multiple copper conductive strips 46. The top surface of these copper conductive strips 46 is arc-shaped and slightly higher than the bearing surface of the sliding chute 29. The bottom of the seed comes into contact with and rubs against the arc-shaped convex surface of the copper conductive strips 46. The electrostatic charge carried by the seed is directly discharged to the ground through the highly conductive copper conductive strips 46 and the grounding wire 47 electrically connected to them. At the same time, it is fixed to the bottom of the flat plate 44. The conductive soft brush 45 is in contact with the upper surface of the sliding trough plate 29. The conductive soft brush 45 is made of carbon fiber material. When the seeds slide under the conductive soft brush 45, the bristles will physically sweep over the top and sides of the seeds, absorb the residual static charge on the seed surface, and finally guide it to the equipment shell and the ground through the path of the flat plate 44, the connecting column 43, the horizontal plate 42, and the support frame 2. This synchronous contact static elimination method does not generate any airflow, so it will not interfere with the straight sliding trajectory of the lightweight millet seeds on the sliding trough plate 29. S6. After being treated to remove static electricity, the seed stream is discharged from the end of the sliding chute 29 and passes through the feed port 31 at the top of the sealed box 30. At this time, multiple upper cameras 33 and multiple lower cameras 34 fixed on the two mounting plates I 32 respectively capture real-time images of each passing seed from above and below. Four supplementary lights 35 fixed inside the sealed box 30 provide uniform and sufficient illumination for the upper cameras 33 and lower cameras 34 to ensure that the captured images are clear and the colors are true. The captured image signals are transmitted to an external industrial controller. The controller has preset thresholds for the color, brightness and other characteristics of good seeds and discolored seeds. The controller compares the image data of each seed with the preset thresholds and determines in real time whether the seed is a good product that should be collected or a defective product that should be rejected. S7. Seeds judged to be good continue to slide down along the grid panel 36 to the discharge channel 37 at the bottom of the sealed box 30, and fall freely from the lower opening of the discharge channel 37, eventually falling into the good seed collection box 40 fixed on the top of the base 1. When the controller judges a seed to be defective, the controller will accurately calculate the time it takes for the seed to reach the spray area of ​​the nozzle 39 in the discharge channel 37 based on the current position of the seed and the preset falling speed model. When the defective seed happens to move in front of the corresponding nozzle 39, the controller... The device instantly issues a command to open the solenoid valve connected to the nozzle 39. High-pressure gas is ejected from the nozzle 39, and the ejected gas blows the substandard seeds laterally away from their original parabolic trajectory, causing them to shift towards the side closer to the upper camera 33. The substandard seeds that are blown away then fall from the discharge channel 37 into the substandard collection box 41 fixed on the top of the base 1 under the action of gravity. The good seeds that are not blown away maintain their original trajectory and fall into the good seed collection box 40. This cycle is repeated, realizing the continuous and accurate sorting of discolored grains in millet seeds.

[0043] However, as is well known to those skilled in the art, the working principles and wiring methods of the upper camera 33, lower camera 34, supplementary lighting fixture 35 and spray nozzle 39 are all conventional means or common knowledge, and will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0044] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0045] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A smart color sorter for discolored millet seeds, comprising: Base (1); Two support frames (2) are fixed to the top of the base (1); The frame body (3) is fixed to the top of the two support frames (2); The storage hopper (4) is fixedly inserted through the frame body (3); An inclined panel (9), disposed between the two support frames (2), is characterized in that it further comprises: The discharge mechanism is located below the storage hopper (4). The discharge mechanism includes a discharge port (5), a sealing plate (10), and a drying mechanism. The discharge port (5) is located at the bottom of the storage hopper (4). The sealing plate (10) is slidably connected to the bottom of the storage hopper (4) and is used to intermittently close the discharge port (5). The drying mechanism can dry the seeds and separate the stuck seeds. The crushing mechanism is located between the two support frames (2). The crushing mechanism includes a rubber drum (24) and a rotating roller (23). The rubber drum (24) and the rotating roller (23) are arranged vertically and rotatably connected between the two support frames (2). The rubber drum (24) and the rotating roller (23) are both located on the side of the discharge mechanism away from the storage hopper (4). The screening mechanism includes a material trough (29) fixed between two support frames (2). The crushing mechanism cooperates with the material trough (29) to discharge seeds after removing hard soil balls onto the material trough (29).

2. The intelligent color sorting machine for discolored millet seeds according to claim 1, characterized in that, The discharge mechanism also includes a connecting plate (6), a vertical rod (7), a tension spring (8), a protruding strip II (17), a guide plate (11), a base plate (12), a reciprocating threaded rod (13), a U-shaped plate (15), and a protruding strip I (16). The connecting plate (6) is fixed between the two support frames (2). The vertical rod (7) slides through the connecting plate (6). The top of the vertical rod (7) is fixedly connected to the bottom of the inclined panel (9). The tension spring (8) is fixed between the bottom of the inclined panel (9) and the top of the connecting plate (6) through a spring seat. The tension spring (8) is sleeved on the outer wall of the vertical rod (7). Multiple protruding strips II (17) are fixed at equal intervals to the bottom of the inclined panel (9). The guide plate (11) is fixed to the sealing plate (10). At the bottom, the guide plate (11) is provided with a hole for the inclined panel (9) to pass through. The bottom plate (12) is fixed to the bottom of the guide plate (11). The reciprocating threaded rod (13) is rotatably connected between the two support frames (2) through the base plate. A slider is fixed inside the bottom plate (12), and the slider slides in cooperation with the reciprocating spiral groove on the reciprocating threaded rod (13). The rotation of the reciprocating threaded rod (13) can drive the bottom plate (12) to move. The U-shaped plate (15) is fixed to the bottom of the guide plate (11). One end of the inclined panel (9) passes through the U-shaped plate (15). The protrusion I (16) is fixed to the bottom inner wall of the U-shaped plate (15), and the protrusion I (16) cooperates with multiple protrusions II (17) to drive the inclined panel (9) to move upward. When the reciprocating threaded rod (13) rotates, it drives the sealing plate (10) and the guide plate (11) to move back and forth. The sealing plate (10) intermittently opens and closes the discharge port (5). When the guide plate (11) moves, it drives the U-shaped plate (15) and the protrusion I (16) to move. The protrusion I (16) and the protrusion II (17) cooperate to drive the inclined panel (9) to move upward. The tension spring (8) applies a pulling force to the inclined panel (9) to reset it, thereby causing the inclined panel (9) to move up and down and vibrate.

3. The intelligent color sorting machine for discolored millet seeds according to claim 2, characterized in that, The drying mechanism includes a heat-conducting box (19), a connecting pipe (20), and a manifold (21). Multiple heat-conducting boxes (19) are fixedly embedded within the inclined panel (9). The top of each heat-conducting box (19) is arc-shaped. The connecting pipe (20) includes an inlet pipe and an outlet pipe, which are fixedly connected to opposite ends of the heat-conducting boxes (19). Two manifolds (21) are respectively located on opposite sides of the two support frames (2), one of which... The manifold (21) is used to connect to the heat source supply end and inject the heat source medium into the heat conduction box (19) through the connecting pipe (20) which serves as the liquid inlet pipe; another manifold (21) is used to connect to the heat source recovery end and discharge the heat source medium through the connecting pipe (20) which serves as the liquid outlet pipe. The end of the connecting pipe (20) away from the heat conduction box (19) is fixedly connected to the corresponding manifold (21), and the connecting pipe (20) is a flexible heat conduction hose; When the clumps of seeds are heated on the heat-conducting box (19), their viscosity decreases. As the inclined panel (9) vibrates and passes through the heat-conducting box (19), the arc-shaped protrusion at the top of the heat-conducting box (19) causes the seed clumps that have lost their water film adhesion to disperse.

4. The intelligent color sorter for discolored millet seeds according to claim 3, characterized in that, The crushing mechanism also includes inclined plate I (22), inclined plate II (25), a screen (26), and a collection box (27). The inclined plate I (22) and the inclined plate II (25) are fixed between the two support frames (2). The side of the inclined plate I (22) near the storage hopper (4) is slidably connected to one end of the inclined panel (9). The end of the inclined plate I (22) away from the inclined panel (9) extends between the rotating roller (23) and the rubber roller (24) to guide the seeds on the inclined panel (9) to the rotating roller (23) and the rubber roller (24). Between the rubber rollers (24), the inclined plate II (25) is located on the side of the rotating roller (23) and the rubber roller (24) away from the inclined panel (9), and is used to guide the seeds between the rotating roller (23) and the rubber roller (24) to the sliding trough plate (29). The screen (26) is fixedly embedded in the inclined plate II (25) to separate the seeds from the broken soil balls. The collection box (27) is fixed to the bottom of the inclined plate II (25) by bolts and cooperates with the screen (26) to collect the soil ball fragments. The hard clay ball is crushed into powder when passing through the gap between the rotating roller (23) and the rubber roller (24), and is then screened by the screen (26) when passing through the inclined plate II (25) and collected by the collection box (27).

5. The intelligent color sorter for discolored millet seeds according to claim 4, characterized in that, The screening mechanism also includes a sealed box (30), a feed port (31), a mounting plate I (32), an upper camera (33), a lower camera (34), and a supplementary lighting fixture (35). The sealed box (30) is fixed between the two support frames (2). The feed port (31) is located at the top of the sealed box (30). The bottom end of the sliding trough plate (29) passes through the feed port (31) and extends into the sealed box (30) to discharge seeds into the sealed box (30). The two mounting plates I (32) are fixed to the top of the sealed box (30). Inside the sealed box (30) and located on both sides of the feed port (31), multiple upper cameras (33) and multiple lower cameras (34) are respectively fixed on the side of the two mounting plates I (32) that are close to each other, for visual identification of the seeds entering the sealed box (30). Four supplementary lights (35) are fixed inside the sealed box (30). The four supplementary lights (35) are in pairs, and the two supplementary lights (35) in the same group are respectively used to supplement the light of the upper camera (33) and the lower camera (34).

6. The intelligent color sorter for discolored millet seeds according to claim 5, characterized in that, The screening mechanism also includes a grid panel (36), a discharge channel (37), a mounting plate II (38), a nozzle (39), a good product collection box (40), and a defective product collection box (41). The grid panel (36) is fixed inside the sealed box (30) and located below the sliding chute (29), and below the shooting direction of the lower camera (34) and the upper camera (33), for guiding the seeds after shooting. The discharge channel (37) is located at the bottom of the sealed box (30) and cooperates with the grid panel (36) for removing seeds from the grid. The seeds guided by the panel (36) are discharged. The mounting plate II (38) is fixed to the inner wall of the discharge channel (37) near the lower camera (34). Multiple nozzles (39) are fixed to the mounting plate II (38) near the upper camera (33) to blow the substandard seeds to one side. The good product collection box (40) and the substandard product collection box (41) are fixed to the top of the base (1) and are both located below the discharge channel (37). The substandard product collection box (41) is located on the side of the good product collection box (40) near the upper camera (33). When the seeds are good, they are collected by the good product collection box (40) through the grid panel (36) and the discharge channel (37). When the seeds are defective, they are blown towards the defective product collection box (41) by the gas sprayed from the nozzle (39) when they fall through the discharge channel (37).

7. The intelligent color sorter for discolored millet seeds according to claim 6, characterized in that, The top of the connecting plate (6) is fixed with a guide post (18) via a base plate. One end of the guide post (18) slides through the U-shaped plate (15) to make the U-shaped plate (15) slide smoothly. The heat-conducting box (19) is made of copper.

8. The intelligent color sorter for discolored millet seeds according to claim 7, characterized in that, A backrest plate (28) is fixed between the two support frames (2), and the side of the material trough plate (29) away from the storage hopper (4) is fixedly connected to the backrest plate (28) to support the material trough plate (29).

9. The intelligent color sorting machine for discolored millet seeds according to claim 8, characterized in that, It also includes a horizontal plate (42), connecting posts (43), a flat plate (44), a conductive soft brush (45), a copper conductive strip (46), and a grounding wire (47). The two horizontal plates (42) are respectively fixed in the two support frames (2). The multiple connecting posts (43) are fixed at the bottom of the horizontal plates (42). The flat plate (44) is fixed at the bottom of two corresponding connecting posts (43). The conductive soft brush (45) is fixed at the bottom of the flat plate (44). (45) is a carbon fiber conductive soft brush. Multiple copper conductive strips (46) are fixedly embedded in the sliding groove plate (29). The copper conductive strip (46) is arc-shaped and protruding on the side near the conductive soft brush (45) to ensure that the seeds on the sliding groove plate (29) fully contact the copper conductive strip (46). The grounding wire (47) is located on the side of the sliding groove plate (29) away from the conductive soft brush (45) and connected to the copper conductive strip (46). The grounding wire (47) is grounded. When the seed slides up and down the sliding trough plate (29), the bottom rubs against the copper conductive strip (46), and static electricity is conducted to the ground through the grounding wire (47). The top is swept by the conductive soft brush (45) to remove the charge.

10. A screening method for a smart color sorter for discolored millet seeds, applied to the smart color sorter for discolored millet seeds as described in claim 9, characterized in that, Includes the following steps: S1. Pour millet seeds into the storage hopper (4), pile them at the bottom and cover the discharge port (5). The motor drives the reciprocating threaded rod (13) to rotate, and through the slider in the bottom plate (12), drive the bottom plate (12), guide plate (11), sealing plate (10) and U-shaped plate (15) to move horizontally back and forth. The sealing plate (10) intermittently opens or closes the discharge port (5) so that the seeds are discharged evenly and in small flow to the guide plate (11) and then guided to the starting end of the inclined panel (9). S2. When the U-shaped plate (15) moves, the protrusion I (16) and protrusion II (17) on it come into contact with each other in turn and are lifted up, overcoming the tension of the tension spring (8) to make the inclined panel (9) move upward; after it is separated, the spring (8) pulls it back, forming continuous vibration, which disperses the seeds, flattens them and slowly slides them along the inclined direction. S3. Seeds flow through the copper heat-conducting box (19) inside the inclined panel (9). External waste heat heats the box (19) to the set temperature through the injection pipe, the manifold (21) and the connecting pipe (20). The heat destroys the viscosity of the water film on the seed surface. The arc-shaped protrusion at the top causes the small seed blocks that are stuck together to disperse into individual seeds. After drying, they continue to move forward. S4. The seeds slide down to the inclined plate I (22), and are introduced into the gap between the rotating roller (23) and the rubber roller (24). The seeds pass through the rubber due to elastic compression, and the hard soil balls are crushed into powder. The mixture falls onto the sieve screen (26) on the inclined plate II (25). The soil powder passes through the mesh and falls into the collection box (27). The intact seeds slide along the inclined plate II (25) to the starting end of the sliding trough plate (29). S5. The seed slides on the sliding trough plate (29) and rubs against the arc-shaped protrusion of the copper conductive strip (46) in turn. The static electricity is discharged through the grounding wire (47). At the same time, the conductive soft brush (45) sweeps over the top and side of the seed, absorbs the residual static electricity and conducts it to the ground through the flat plate (44), connecting column (43), horizontal plate (42) and support frame (2). There is no airflow interference, which ensures that the seed slides in a straight line. S6. Seeds enter the sealed box (30) through the feed port (31). The upper camera (33) and the lower camera (34) collect images in real time under the illumination of the supplementary light fixture (35), and transmit them to the external industrial controller. The images are compared with the preset characteristic thresholds of good and discolored seeds for real-time judgment. S7. Good seeds fall into the good product collection box (40) along the grid panel (36) and discharge channel (37). When a defective product is judged, high-pressure gas is sprayed out through the nozzle (39) to blow the defective product away from the original trajectory and fall into the defective product collection box (41). Good products remain on the original trajectory and fall into the good product collection box (40), thus completing continuous sorting.

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