Efficient wheat seed coating device

Abstract

The invention discloses an efficient wheat seed coating device, and belongs to the technical field of seed coating devices.The efficient wheat seed coating device comprises an atomizing, fluidizing and air-drying unit, a coating bowl opening, a coating machine head, a transposition table, a conveying unit and a secondary drying unit, a ring atomizing nozzle and a ring circulating nozzle are respectively fixed at the upper part and the lower part of the inner side of the first pipe section, and are respectively connected with a first ring pipe and a second ring pipe outside the first pipe section; the coating bowl opening is fixed at the top of the first pipe section, and an extending pipe section is integrally formed at the top of the coating bowl opening; the coating machine head comprises a guide hopper which is erected at the top of the extension pipe section in an embedded mode, and a pipe column is fixed to the center of the top of the guide hopper. According to the efficient wheat seed coating device, wheat can be rapidly and sufficiently coated, coating liquid and the wheat are safely dried through floating cold air drying and hot air drying, and the wheat seed coating efficiency is improved. And the wheat coating quality can be ensured.

Description

Technical Field

[0001] This invention specifically relates to a high-efficiency wheat seed coating device, belonging to the technical field of seed coating devices. Background Technology

[0002] To prevent and control pests and diseases, promote wheat growth and development, and increase yield, a coating device is needed to coat wheat seeds. This involves thoroughly mixing the coating solution with the wheat seeds, which effectively prevents and controls pests and diseases, promotes seed germination and seedling growth, and increases crop yield. The traditional wheat seed coating process uses a stirring shaft to mix the coating solution with the wheat seeds. For example, Chinese Patent Publication No. CN113141813B discloses a rapid wheat seed coating treatment device, including a tank, a first conveying component, a leveling component, a mixing component, and a second conveying component. This structure is driven by a second motor to rotate a drum, which in turn drives scrapers and rake teeth. The rake teeth gather the seeds onto the first conveyor belt into a pile. Wheat seeds are spread out and flattened by a scraper. By spreading and flattening the wheat seeds, the sprayed coating solution can fully contact each grain of wheat, thereby improving the coating success rate. For example, Chinese Patent Publication No. CN222869394U discloses a wheat seed coating device. This structure reduces the rotation speed of the rotating shaft, thereby reducing the rotation speed of the positioning plate and stirring arc plate when stirring the medicine and wheat seeds. This prevents the positioning plate and stirring arc plate from breaking the coated wheat seeds due to excessive speed, increasing the safety of the wheat seeds during coating. However, the above coating equipment consumes a large amount of coating solution during the coating process and cannot simultaneously ensure that the entire outer surface of the wheat is fully coated with the coating solution and achieves high drying efficiency. Summary of the Invention

[0003] To address the aforementioned problems, this invention proposes a highly efficient wheat seed coating device that enables rapid and thorough coating of wheat seeds. Furthermore, by employing floating cold air drying and hot air drying, the coating solution and the wheat itself are safely dried, ensuring the quality of the wheat coating.

[0004] The high-efficiency wheat seed coating device of the present invention includes: The atomizing fluidized air drying unit includes a first pipe section, with an atomizing nozzle and a fluidizing nozzle fixed to the upper and lower parts of the inner side of the first pipe section, respectively. The atomizing nozzle and the fluidizing nozzle are respectively connected to a first ring pipe and a second ring pipe outside the first pipe section. A coating bowl is fixed to the top of the first tube segment, and an extension tube segment is integrally formed on the top of the coating bowl. The coating machine head includes a guide hopper fitted and mounted on the top of an extension pipe section. A pipe column is fixed at the center of the top of the guide hopper, and a feeding platform is fixed at the bottom of the pipe column. A feeding motor is fixed to the outside of the guide hopper via a frame plate. A feeding disc is rotatably mounted on the bottom inner side of the guide hopper via an inner bearing. The feeding disc is rolled and mounted to the outside of the pipe column. The bottom of the feeding disc is mounted to the top of the feeding platform via a thrust bearing. A three-dimensional atomizing unit is provided at the bottom of the feeding platform. A metering hopper is fixed to the top of the guide hopper. The feeding motor and the feeding disc are connected via a transmission component. A transposition table includes a cylindrical base, on the inner side of which a fan blade driven by a transposition motor is provided. A mesh array and a material discharge port are respectively opened at the bottom of the cylindrical base. The bottom of the first pipe section is fixed to the top of the cylindrical base through an enlarged section and is positioned directly opposite the mesh array. An air guide pipe is fixed to the bottom of the cylindrical base directly opposite the mesh array, and the other end of the air guide pipe is connected to a fan. The conveying unit includes a conveying cavity, the input end of which is connected to the discharge port. A mesh belt driven by a conveying motor is provided inside the conveying cavity. Multiple partitions are fixed at intervals on the mesh belt, and a hot air unit is provided between the mesh belts. A secondary drying unit is connected to the output end of the transmission tube. The first ring pipe and the three-dimensional atomizing unit are respectively connected to the liquid storage tank through a pump set; the second ring pipe is connected to the cold air blower, and the hot air unit is connected to the hot air blower.

[0005] During operation, the metering hopper receives wheat fed in from the outside and weighs it to obtain its weight. Next, the storage tank receives coating solution from the external supply line. The metering valve on the external supply line weighs the coating solution to match the wheat weight and pumps the solution into the storage tank (equipped with a stirring system and an anti-freeze heating system). Then, the metering hopper feeds the wheat into the guide hopper. Simultaneously, the feeding motor and pump unit are activated. The feeding motor is driven by a transmission component using a synchronous belt and synchronous pulley. The synchronous pulley rotates, driving the feeding disc to rotate synchronously at low speed along the outer wall of the tube column via a synchronous belt. As the feeding disc rotates, it is guided by an inner bearing and a thrust bearing, ensuring the wheat on the feeding disc is evenly distributed onto the feeding platform, preventing wheat accumulation. When the wheat is fed 360° onto the feeding platform, it rolls and slides down the platform, falling in a fan-shaped, dispersed manner. As the wheat falls, the three-dimensional atomization unit forms a ring-shaped three-dimensional atomization zone in the coating bowl area. The wheat tumbles into this zone, and its exterior is fully coated with the coating liquid. The wheat is then enveloped; subsequently, it descends under gravity and enters the first pipe section. Simultaneously, the pump unit operates, creating a three-dimensional atomization zone on the upper inner side of the first pipe section. The wheat, under gravity, enters this atomization zone, while the fluidizing nozzles lift and float it around the atomization zone, preventing it from descending. This ensures the wheat is fluidized on the upper inner side of the first pipe section. As the upper wheat covers downwards, the lower wheat overcomes the air pressure from the fluidizing nozzles and moves towards the lower part of the first pipe section. The surface droplets of the wheat are blown upwards, and the lower wheat continues to descend... The wheat is floated and initially dried by cold air. Specifically, the fan guides the cold air into the cylinder through the air duct and mesh array, thereby providing pressurized cold air to the coated wheat entering the lower part of the first pipe section, initially drying the surface of the coated wheat. Then, the shift motor drives the fan blades to rotate, sending the initially dried and floating wheat into the discharge port. Through the discharge port, it enters the conveying unit, where the initially dried coated wheat is floated and transported and dried with hot air. Finally, it is dried and discharged through the secondary drying unit.

[0006] Furthermore, the coating bowl includes a lower bowl fixed to the top of the first pipe section via a flange, and an upper bowl fixed to the lower bowl via a flange. An exhaust port is provided at the top of the upper bowl, and an exhaust filter is fixed at the exhaust port to prevent pressure buildup inside the atomization fluidization drying unit. An extension pipe section is integrally formed at the top of the upper bowl, and a ring plate is fixed to the extension pipe section on the inner side of the upper bowl. A bottom guide bearing, which is installed on the ring plate and is used to guide the rotation of the transmission component, is also provided. The upper and lower bowls form a single coating bowl. Because the inner diameter of the coating bowl is larger than that of the first pipe section and the extension pipe section, when the feeding table guides the wheat to roll down in a fan shape, the wheat will not impact the inner wall of the coating bowl, and a three-dimensional atomization zone can be established within the coating bowl.

[0007] Furthermore, the three-dimensional atomizing unit includes a pressurizing tube rotatably disposed inside the column, the bottom of the pressurizing tube passing through the bottom of the fabric platform and fixed with a rotating atomizing head; a rotary joint is fixed at the top of the pressurizing tube, and the upper part of the pressurizing tube is connected to the atomizing motor through a transmission component.

[0008] The three-dimensional atomizing unit can create a three-dimensional atomization band within the coating bowl. During operation, the atomizing motor drives the pressure tube to rotate at high speed through the transmission component. The bottom of the pressure tube synchronously drives the rotating atomizing head to rotate at high speed. At the same time, the top of the pressure tube releases the rotational force through the rotary joint. The top of the rotary joint remains fixed, while the bottom rotates synchronously with the pressure tube. While the rotating atomizing head rotates at high speed, the pump unit sends the coating liquid into the rotating atomizing head through the rotary joint and the pressure tube, forming a three-dimensional atomization band through the rotating atomizing head.

[0009] Furthermore, the rotating atomizing head includes a rotating disk, on which multiple guide tubes are fixed at intervals, and multiple nozzles are fixed on the guide tubes; the guide tubes are connected to a pressurization pipe through the internal flow channel of the rotating disk.

[0010] During operation, the rotating disc rotates at high speed, driving the various guide tubes on the disc to rotate synchronously. At the same time, the coating liquid inside the pressurized tube is pressurized and sent into the internal flow channel of the rotating disc and simultaneously into the guide tubes. Multiple nozzles on the guide tubes continuously spray wheat coating atomizing liquid, which forms a ring-shaped three-dimensional atomization zone around the rotating disc. When uncoated wheat is guided and rolled downwards by the feeding table, it tumbles and falls within the three-dimensional atomization zone. The three-dimensional atomization zone can fully coat the outer surface of the wheat, attaching a layer of coating to the wheat surface, ensuring that the wheat surface is fully coated.

[0011] Furthermore, the hot air unit includes multiple nozzles fixed to the front and rear sides of the transmission pipe cavity, the nozzles being inclined towards the top of the inner side of the mesh belt; multiple corrugated cavities are spaced apart at the top of the transmission pipe cavity; the nozzles are connected to the diversion pipe, the diversion pipe is connected to the main pipe, and the main pipe is connected to the hot air blower through the hot air flange.

[0012] When the hot air unit is working, the transfer table sends the wheat, which has been coated and pre-dried by cold air, into the conveyor belt in the transmission tube. Then, the hot air blower starts, and pressurized hot air is sprayed onto the wheat on the conveyor belt through the main pipe, the branch pipe and the nozzles. The wheat is in a floating state. At the same time, the hot air continuously heats the wheat with safe temperature control, and the coating layer of the wheat is dried quickly. Meanwhile, the wheat is carried by the baffles through the spray surfaces of each nozzle in sequence. Finally, it enters the output end of the transmission tube. The nozzles and the corrugated cavity are set facing each other, and the baffles are attached to the lower part of the corrugated cavity. This can keep the wheat in a floating transmission state and prevent the wheat from being hit by the wind pressure on the top of the inner side of the transmission tube.

[0013] Furthermore, the secondary drying unit includes a drying discharge hopper, a rotary discharge valve at the bottom of the drying discharge hopper, an exhaust pipe fixed at the center of the top surface of the drying discharge hopper, a reducing cylinder inside the drying discharge hopper, the bottom of the reducing cylinder being screwed to the bottom of the drying discharge hopper, and an array of through holes at the lower part of the reducing cylinder; the top of the reducing cylinder is connected to the top of the inner side of the drying discharge hopper via a guide plate, and an exhaust pipe connected to the reducing cylinder is provided at the top of the drying discharge hopper; a receiving cylinder is fixed at the top of the ring plate, an exhaust filter is provided at the bottom of the receiving cylinder, and the exhaust filter is connected to the outer wall of the reducing cylinder; a V-shaped feeding port is axially provided in the receiving cylinder; a cross partition is rotatably provided inside the receiving cylinder, the cross partition being connected to a feeding motor at the top of the receiving cylinder; a guide pipe is provided at the top of the receiving cylinder on the side away from the feeding port, and the guide pipe is connected to the output end of the transmission chamber.

[0014] When the secondary drying unit is working, the conveyor belt in the transmission chamber feeds the coated and pre-dried wheat into the feed pipe. At the same time, the hot airflow in the transmission chamber enters the feed pipe and feeds the wheat into the receiving cylinder. The inner side of the receiving cylinder is separated from the feed port and the exhaust filter by a cross partition. The wheat is trapped by the exhaust filter, and the gas enters between the inner wall of the drying discharge hopper and the outer wall of the reducing cylinder. Then, the hot airflow enters the reducing cylinder through the array of through holes and exits the drying discharge hopper through the exhaust pipe at the top of the reducing cylinder. Next, the feeding motor is activated, driving the cross partition to rotate synchronously. The rotating fan blades feed the wheat inside the receiving cylinder into the feed port and into the reducing cylinder through the guide plate. The wheat falls in the opposite direction to the hot airflow rising in the reducing cylinder, which can reheat the wheat. Finally, the rotary discharge valve is activated, and the coated and dried wheat is discharged from the drying discharge hopper through the rotary discharge valve. While the bottom of the drying discharge hopper is discharged through the rotary discharge valve, the bottom of the drying discharge hopper is kept closed at all times.

[0015] Furthermore, a protective cover is fixed to the top of the feed hopper via a flange; the protective cover can protect the rotary joint, the atomizing motor, and the metering hopper.

[0016] Furthermore, the extension pipe section and the guide hopper are fixed with locking pins and pin seats that are aligned and fitted with each other; through the cooperation of the locking pins and pin seats, the coating machine head and the extension pipe section can be freely installed and removed. After assembly, the locking pins and pin seats can circumferentially limit the coating machine head.

[0017] Furthermore, the metering hopper is connected to a grain suction machine, which intermittently feeds the wheat pile to be coated into the metering hopper. The metering hopper and the grain suction machine are linked, and the grain suction machine stops sucking grain when the metering hopper reaches the set amount.

[0018] Compared with the prior art, the high-efficiency wheat seed coating device of the present invention has the following advantages: 1. The coating liquid is set as a ring-shaped three-dimensional atomization zone, and combined with the tumbling and falling of wheat, so that all sides of the wheat can fully contact the coating liquid, which can fully coat the outer surface of the wheat and attach a layer of coating to the wheat surface, so that the outer surface of the wheat can be coated quickly.

[0019] 2. During wheat coating, after the first coating is performed using a three-dimensional atomizing belt, a fluidized atomizing zone is formed in the upper part of the first pipe section through atomizing nozzles and fluidizing nozzles. This allows the wheat to be tumbled and coated a second time, ensuring that the wheat is fully coated.

[0020] 3. After coating is completed, the wheat is blown and tumbled with cold air by a fan to allow the coating liquid on the surface of the wheat to dry initially; at the same time, the wheat is kept in a floating state to prevent the coating liquid on the surface of the wheat from being scraped off during the process of falling and transporting the wheat.

[0021] 4. After the wheat has completed the initial drying, it is transported by hot air floating conveyor, which allows the wheat to dry itself with hot air. This avoids the situation where the wheat is only dried on the surface during the coating process, while the inside remains damp. Finally, it is dried and discharged through a secondary drying unit. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the high-efficiency wheat seed coating device of the present invention.

[0023] Figure 2 This is a cross-sectional schematic diagram of the high-efficiency wheat seed coating device of the present invention.

[0024] Figure 3 This is a schematic cross-sectional view of the coating machine head of the present invention.

[0025] Figure 4 For the present invention Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0026] Figure 5 This is a schematic diagram of the installation structure of the transposition station and transmission unit of the present invention.

[0027] Figure 6 This is a schematic cross-sectional view of the secondary drying unit without the cross partition installed according to the present invention.

[0028] Figure 7 This is a schematic cross-sectional view of the secondary drying unit of the present invention.

[0029] Reference numerals: 1. First pipe section; 2. Atomizing nozzle; 3. Fluidizing nozzle; 4. First ring pipe; 5. Second ring pipe; 6. Extension pipe section; 7. Guide hopper; 8. Pipe column; 9. Feeding platform; 10. Feeding motor; 11. Inner bearing; 12. Feeding discharge plate; 13. Thrust bearing; 14. Metering hopper; 15. Cylinder seat; 16. Shifting motor; 17. Fan blade; 18. Mesh array; 19. Discharge port; 20. Air guide pipe; 21. Coating cup opening; 22. Conveying cavity; 23. Lower cup opening; 24. Upper cup opening; 25. Ring plate. 26. Bottom guide bearing; 27. Pressurization pipe; 28. Rotary joint; 29. ​​Atomizing motor; 30. Rotary disc; 31. Conduit; 32. Nozzle; 33. Nozzle; 34. Corrugated cavity; 35. Diverter pipe; 36. Main pipe; 37. Drying discharge hopper; 38. Rotary discharge valve; 39. Exhaust pipe; 40. Reduced diameter cylinder; 41. Array through hole; 42. Receiving cylinder; 43. Exhaust filter screen; 44. Feed port; 45. Feeding motor; 46. Guide pipe; 47. Protective cover; 48. Locking pin; 49. Pin seat; 50. Cross partition. Detailed Implementation

[0030] Example 1: like Figures 1 to 7 The high-efficiency wheat seed coating device shown includes: The atomizing fluidized air drying unit includes a first pipe section 1. An atomizing nozzle 2 and a fluidizing nozzle 3 are respectively fixed to the upper and lower parts of the inner side of the first pipe section 1. The atomizing nozzle 2 and the fluidizing nozzle 3 are respectively connected to a first ring pipe 4 and a second ring pipe 5 outside the first pipe section 1. The coating bowl 21 is fixed to the top of the first tube segment 1, and the top of the coating bowl 21 is integrally formed with an extension tube segment 6; The coating machine head includes a guide hopper 7 fitted and mounted on the top of an extension tube section 6. A tube column 8 is fixed at the center of the top of the guide hopper 7, and a feeding platform 9 is fixed at the bottom of the tube column 8. A feeding motor 10 is fixed to the outside of the guide hopper 7 via a frame plate. A feeding drop plate 12 is rotatably mounted on the bottom inner side of the guide hopper 7 via an inner bearing 11. The feeding drop plate 12 is rolled on the outside of the tube column 8. The bottom of the feeding drop plate 12 is mounted to the top of the feeding platform 9 via a thrust bearing 13. A three-dimensional atomizing unit is provided at the bottom of the feeding platform 9. A metering hopper 14 is fixed to the top of the guide hopper 7. The feeding motor 10 and the feeding drop plate 12 are connected via a transmission component. A transposition table includes a cylindrical base 15, on the inner side of which a fan blade 17 driven by a transposition motor 16 is provided. A mesh array 18 and a material discharge port 19 are respectively opened at the bottom of the cylindrical base 15. The bottom of the first pipe section 1 is fixed to the top of the cylindrical base 15 through an enlarged section and is positioned directly opposite the mesh array 18. An air guide pipe 20 is fixed to the bottom of the cylindrical base 15 directly opposite the mesh array 18, and the other end of the air guide pipe 20 is connected to a fan. The conveying unit includes a conveying cavity 22, the input end of which is connected to the discharge port 19. A mesh belt driven by a conveying motor is provided inside the conveying cavity 22. Multiple partitions are fixed at intervals on the mesh belt, and a hot air unit is provided between the mesh belts. A secondary drying unit is connected to the output end of the transmission tube 22; The first ring pipe 4 and the three-dimensional atomizing unit are respectively connected to the liquid storage tank through a pump group; the second ring pipe 5 is connected to the cold air blower, and the hot air unit is connected to the hot air blower.

[0031] During operation, the metering hopper 14 receives wheat fed in from the outside and weighs it to obtain its weight. Next, the storage tank receives coating liquid from the external supply line. The metering valve on the external supply line weighs the coating liquid to match the wheat weight and pumps the coating liquid into the storage tank (equipped with a stirring system and an anti-freeze heating system). Then, the metering hopper 14 feeds the wheat into the guide hopper 7. Simultaneously, the feeding motor 10 and pump set are activated. The feeding motor 10 is driven by a transmission component, which uses a synchronous belt and synchronous pulley; that is, the feeding motor 10 drives the synchronous belt and pump set. The wheel rotates, and the feeding disc 12 is driven by a synchronous belt to rotate synchronously at a low speed along the outer wall of the column 8. When the feeding disc 12 rotates, it is guided by the inner bearing 11 and the thrust bearing 13, so that the wheat on the feeding disc 12 is evenly sprinkled onto the feeding table 9, avoiding the accumulation of wheat on the feeding disc 12. When the wheat is fed to the feeding table 9 in 360°, the wheat rolls and slides down the feeding table 9, and falls in a fan-shaped scattered state. When the wheat falls, the three-dimensional atomization unit can form a ring-shaped three-dimensional atomization zone in the area of ​​the coating bowl 21. The wheat tumbles into the three-dimensional atomization zone, and the outside of the wheat is coated. The coating liquid fully coats the wheat; then, the wheat, under the influence of gravity, descends and enters the interior of the first pipe section 1. Simultaneously, the pump unit operates, creating a three-dimensional atomization zone on the upper inner side of the first pipe section 1. The wheat, under gravity, enters this atomization zone, and simultaneously, the fluidizing nozzles 3 lift and float the wheat around the atomization zone, preventing it from descending. This ensures the wheat is fluidized on the upper inner side of the first pipe section 1. As the upper wheat covers downwards, the lower wheat overcomes the air pressure of the fluidizing nozzles 3 and moves towards the lower part of the first pipe section 1. The surface droplets of the wheat are blown upwards, and the lower wheat continues to descend... The process of floating and initially drying the wheat with cold air involves the following steps: The fan guides the cold air into the cylinder base 15 through the air duct 20 and the mesh array 18, thereby providing pressurized cold air to the coated wheat entering the lower part of the first pipe section 1 to initially dry the surface of the coated wheat. Then, the shift motor 16 drives the fan blades 17 to rotate, sending the initially dried and floating wheat into the discharge port 19. The wheat then enters the conveying unit through the discharge port 19, where it undergoes floating transport and hot air drying. Finally, the wheat is dried and discharged through the secondary drying unit.

[0032] The coating cup 21 includes a lower cup 23 fixed to the top of the first pipe section 1 via a flange. An upper cup 24 is fixed to the lower cup 23 via a flange. An exhaust port is provided at the top of the upper cup 24, and an exhaust filter is fixed at the exhaust port to prevent pressure buildup inside the atomization fluidization drying unit. An extension pipe section 6 is integrally formed at the top of the upper cup 24, and a ring plate 25 is fixed to the extension pipe section 6 on the inner side of the upper cup 24. A... Ring plate 25; The ring plate 25 is provided with a bottom guide bearing 26 that is installed with the transmission component. The bottom guide bearing 26 can rotate and guide the transmission component; The upper bowl 24 and the lower bowl 23 form an integral coating bowl 21. Since the inner diameter of the coating bowl 21 is larger than the inner diameter of the first pipe section 1 and the extension pipe section 6, when the feeding table 9 guides the wheat to roll down and falls in a fan shape, the wheat will not hit the inner wall of the coating bowl 21, and a three-dimensional atomization zone can be established inside the coating bowl 21.

[0033] The three-dimensional atomizing unit includes a pressurizing tube 27 rotatably disposed inside the tube column 8. The bottom of the pressurizing tube 27 passes through the bottom of the fabric platform 9 and is fixed with a rotating atomizing head. A rotary joint 28 is fixed at the top of the pressurizing tube 27, and the upper part of the pressurizing tube 27 is connected to the atomizing motor 29 through a transmission component.

[0034] The three-dimensional atomizing unit can create a three-dimensional atomization band within the coating bowl 21. During operation, the atomizing motor 29 drives the pressurizing tube 27 to rotate at high speed through the transmission component. The bottom of the pressurizing tube 27 synchronously drives the rotating atomizing head to rotate at high speed. At the same time, the top of the pressurizing tube 27 releases the rotational force through the rotary joint 28. The top of the rotary joint 28 remains fixed, while the bottom rotates synchronously with the pressurizing tube 27. While the rotating atomizing head rotates at high speed, the pump unit sends the coating liquid into the rotating atomizing head through the rotary joint 28 and the pressurizing tube 27, forming a three-dimensional atomization band through the rotating atomizing head.

[0035] The rotating atomizing head includes a rotating disk 30, on which multiple conduits 31 are fixed at intervals, and multiple nozzles 32 are fixed on the conduits 31; the conduits 31 are connected to the pressurization pipe 27 through the internal flow channel of the rotating disk 30.

[0036] During operation, the rotating disk 30 rotates at high speed, driving the various guide tubes 31 on the rotating disk 30 to rotate synchronously. At the same time, the coating liquid inside the pressurizing pipe 27 is pressurized and sent into the internal flow channel of the rotating disk 30, and simultaneously sent into the guide tubes 31. Multiple nozzles 32 on the guide tubes 31 continuously spray wheat coating atomizing liquid, and the coating liquid can form a ring-shaped three-dimensional atomizing band around the rotating disk 30. When the uncoated wheat is guided and rolled downwards by the cloth table 9, the wheat tumbles and falls in the three-dimensional atomizing band. The three-dimensional atomizing band can fully coat the outer surface of the wheat, attaching a layer of coating to the wheat surface, ensuring that the wheat surface is fully coated.

[0037] The hot air unit includes multiple nozzles 33 fixed to the front and rear sides of the transmission tube 22, with the nozzles 33 inclined toward the top of the inner side of the mesh belt; multiple corrugated cavities 34 are spaced apart on the top of the transmission tube 22; the nozzles 33 are connected to the diversion pipe 35, the diversion pipe 35 is connected to the main pipe 36, and the main pipe 36 is connected to the hot air fan through a hot air flange.

[0038] When the hot air unit is working, the transfer table sends the wheat, which has been coated and pre-dried by cold air, into the conveyor belt in the transmission tube 22. Then, the hot air blower is activated, and pressurized hot air is sprayed onto the wheat on the conveyor belt through the main pipe 36, the branch pipe 35, and the nozzles 33. The wheat is in a floating state. At the same time, the hot air continuously heats the wheat with safe temperature control, and the coating layer of the wheat is dried quickly. Meanwhile, the wheat is carried by the baffle through the spraying surfaces of each nozzle 33 in sequence. Finally, it enters the output end of the transmission tube 22. The nozzles 33 and the corrugated cavity 34 are set facing each other, and the baffle is attached to the lower part of the corrugated cavity 34. This allows the wheat to be in a floating transmission state and also prevents the wheat from being impacted by the wind pressure on the top of the inner side of the transmission tube 22.

[0039] The secondary drying unit includes a drying discharge hopper 37, with a rotary discharge valve 38 at the bottom. An exhaust pipe 39 is fixed at the center of the top surface of the drying discharge hopper 37. A reducing cylinder 40 is installed inside the drying discharge hopper 37, with its bottom screwed to the bottom of the drying discharge hopper 39. An array of through holes 41 is formed in the lower part of the reducing cylinder 40. The top of the reducing cylinder 40 is connected to the top of the inner side of the drying discharge hopper 37 via a guide plate. The top of the drying discharge hopper 37 is provided with a connection to the reducing cylinder 40. Exhaust pipe 39; a receiving cylinder 42 is fixed to the top of the ring plate 25, and an exhaust filter 43 is provided at the bottom of the receiving cylinder 42. The exhaust filter 43 is connected to the outer wall of the reduced diameter cylinder 40; a V-shaped feeding port 44 is axially opened on the receiving cylinder 42; a cross partition 50 is rotatably arranged on the inner side of the receiving cylinder 42. The cross partition 50 is connected to the feeding motor 45 at the top of the receiving cylinder 42. A guide pipe 46 is provided on the top side of the receiving cylinder 42 away from the feeding port 44. The guide pipe 46 is connected to the output end of the transmission chamber 22.

[0040] When the secondary drying unit is working, the mesh belt in the conveyor duct 22 feeds the coated and pre-dried wheat into the feed pipe 46. At the same time, the hot airflow in the conveyor duct 22 enters the feed pipe 46 and feeds the wheat into the receiving cylinder 42. The inside of the receiving cylinder 42 is separated from the feed port 44 and the exhaust filter 43 by a cross partition 50. The wheat is trapped by the exhaust filter 43, and the gas enters between the inner wall of the drying discharge hopper 37 and the outer wall of the reducing cylinder 40. Then, the hot airflow enters the reducing cylinder 40 through the array through holes 41 and is discharged through the exhaust pipe at the top of the reducing cylinder 40. The dry discharge hopper 37 is then activated. Next, the feeding motor 45 drives the cross partition 50 to rotate synchronously. The rotating fan blades 17 feed the wheat inside the receiving cylinder 42 into the feeding port 44, and then through the guide plate into the narrowing cylinder 40. The direction of the wheat's fall is opposite to the direction of the hot airflow rising in the narrowing cylinder 40, which can reheat the wheat. Finally, the rotating discharge valve 38 is activated, and the wheat that has completed coating and drying is discharged from the dry discharge hopper 37 through the rotating discharge valve 38. While the bottom of the dry discharge hopper 37 is discharged through the rotating discharge valve 38, the bottom of the dry discharge hopper 37 is kept closed at all times.

[0041] The top of the feed hopper 7 is fixed with a protective cover 47 by a flange; the protective cover 47 can protect the rotary joint 28, the atomizing motor 29 and the metering hopper 14.

[0042] The extension pipe section 6 and the guide hopper 7 are externally fixed with locking pins 48 and pin seats 49 that are aligned and fitted together. Through the cooperation of locking pins 48 and pin seats 49, the coating machine head and the extension pipe section 6 can be freely installed and removed. After assembly, locking pins 48 and pin seats 49 can circumferentially limit the coating machine head.

[0043] The metering hopper 14 is connected to a grain suction machine, which intermittently feeds the wheat pile to be coated into the metering hopper 14. The metering hopper 14 and the grain suction machine are linked. When the metering hopper 14 reaches the set amount, the grain suction machine stops its suction action.

[0044] The above embodiments are merely preferred embodiments of the present invention. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present invention are included within the scope of the present invention.

Claims

1. A high-efficiency wheat seed coating device, characterized in that: include: The atomizing fluidized air drying unit includes a first pipe section, with an atomizing nozzle and a fluidizing nozzle fixed to the upper and lower parts of the inner side of the first pipe section, respectively. The atomizing nozzle and the fluidizing nozzle are respectively connected to a first ring pipe and a second ring pipe outside the first pipe section. A coating bowl is fixed to the top of the first tube segment, and an extension tube segment is integrally formed on the top of the coating bowl. The coating machine head includes a guide hopper fitted and mounted on the top of an extension pipe section. A pipe column is fixed at the center of the top of the guide hopper, and a feeding platform is fixed at the bottom of the pipe column. A feeding motor is fixed to the outside of the guide hopper via a frame plate. A feeding disc is rotatably mounted on the bottom inner side of the guide hopper via an inner bearing. The feeding disc is rolled and mounted to the outside of the pipe column. The bottom of the feeding disc is mounted to the top of the feeding platform via a thrust bearing. A three-dimensional atomizing unit is provided at the bottom of the feeding platform. A metering hopper is fixed to the top of the guide hopper. The feeding motor and the feeding disc are connected via a transmission component. A transposition table includes a cylindrical base, on the inner side of which a fan blade driven by a transposition motor is provided. A mesh array and a material discharge port are respectively opened at the bottom of the cylindrical base. The bottom of the first pipe section is fixed to the top of the cylindrical base through an enlarged section and is positioned directly opposite the mesh array. An air guide pipe is fixed to the bottom of the cylindrical base directly opposite the mesh array, and the other end of the air guide pipe is connected to a fan. The conveying unit includes a conveying cavity, the input end of which is connected to the discharge port. A mesh belt driven by a conveying motor is provided inside the conveying cavity. Multiple partitions are fixed at intervals on the mesh belt, and a hot air unit is provided between the mesh belts. A secondary drying unit is connected to the output end of the transmission tube. The first ring pipe and the three-dimensional atomizing unit are respectively connected to the liquid storage tank through a pump set; the second ring pipe is connected to the cold air blower, and the hot air unit is connected to the hot air blower.

2. The high-efficiency wheat seed coating device according to claim 1, characterized in that: The coating cup includes a lower cup fixed to the top of the first pipe section by a flange, an upper cup fixed to the lower cup by a flange, an exhaust port on the upper part of the upper cup, an exhaust filter fixed at the exhaust port, an extension pipe section integrally formed on the top of the upper cup, an annular plate fixed to the extension pipe section on the inner side of the upper cup, and a bottom guide bearing for mounting to the transmission component is provided on the annular plate.

3. The high-efficiency wheat seed coating device according to claim 1, characterized in that: The three-dimensional atomizing unit includes a pressurizing tube rotatably disposed inside the column. The bottom of the pressurizing tube passes through the bottom of the fabric platform and is fixed with a rotating atomizing head. A rotary joint is fixed at the top of the pressurizing tube, and the upper part of the pressurizing tube is connected to the atomizing motor through a transmission component.

4. The high-efficiency wheat seed coating device according to claim 3, characterized in that: The rotating atomizing head includes a rotating disk, on which multiple guide tubes are fixed at intervals, and multiple nozzles are fixed on the guide tubes; the guide tubes are connected to a pressurization pipe through the internal flow channel of the rotating disk.

5. The high-efficiency wheat seed coating device according to claim 1, characterized in that: The hot air unit includes multiple nozzles fixed to the front and rear sides of the transmission pipe cavity, with the nozzles tilted towards the top of the inner side of the mesh belt; multiple corrugated cavities are spaced apart at the top of the transmission pipe cavity; the nozzles are connected to the diversion pipe, the diversion pipe is connected to the main pipe, and the main pipe is connected to the hot air blower through the hot air flange.

6. The high-efficiency wheat seed coating device according to claim 1, characterized in that: The secondary drying unit includes a drying discharge hopper with a rotary discharge valve at the bottom and an exhaust pipe fixed at the center of the top surface. A reducing cylinder is installed inside the drying discharge hopper, its bottom screwed to the bottom of the hopper, and an array of through holes is formed at its lower part. The top of the reducing cylinder is connected to the top of the inner side of the drying discharge hopper via a guide plate, and an exhaust pipe connected to the reducing cylinder is installed at the top of the drying discharge hopper. A receiving cylinder is fixed to the top of the ring plate, and an exhaust filter is installed at the bottom of the receiving cylinder, connected to the outer wall of the reducing cylinder. A V-shaped feeding port is axially formed on the receiving cylinder. A cross-shaped partition is rotatably installed inside the receiving cylinder, connected to a feeding motor at the top of the receiving cylinder. A guide pipe is installed on the top side of the receiving cylinder away from the feeding port, connected to the output end of the transmission chamber.

7. The high-efficiency wheat seed coating device according to claim 1, characterized in that: The top of the feed hopper is fixed with a protective cover via a flange.

8. The high-efficiency wheat seed coating device according to claim 1, characterized in that: The extension pipe section and the feed hopper are fixed with locking pins and pin seats that are aligned and fitted together.

9. The high-efficiency wheat seed coating device according to claim 1, characterized in that: The metering hopper is connected to a grain suction machine.

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