Continuous drying and sorting device for agricultural seeds

Abstract

The invention relates to the technical field of agricultural seed processing, in particular to an agricultural seed continuous drying and sorting device which comprises a supporting frame, a shell is fixedly connected to the upper end of the supporting frame, a lower side plate is fixedly connected to the obliquely-downward end of the shell, and an upper side plate is fixedly connected to the obliquely-upward end of the shell. A circular through hole is formed in the side face of the lower side plate in a penetrating mode, a circular groove is formed in the side face of the upper side plate in a penetrating mode, an annular rotating groove is formed in the inner side wall of the upper side plate, and an inner sorting roller and an outer sorting roller are rotationally installed on the inner side of the shell; the seed sorting device has the beneficial effects that seeds are guided into an inner cavity of the inner sorting roller through the feeding hopper, the inner sorting roller and the outer sorting roller are driven to rotate through the driving mechanism, hot air is introduced into the first air guide mechanism, the second air guide mechanism and the third branch air pipe through the air inlet mechanism, and the seeds firstly roll downwards along the inner cavity of the inner sorting roller; the seeds are guided through the first spiral mechanism, and the rolling time of the seeds in the inner cavity of the inner sorting roller is prolonged.

Description

Technical Field

[0001] This invention relates to the field of agricultural seed processing technology, specifically to a continuous drying and sorting device for agricultural seeds. Background Technology

[0002] Agricultural seed processing refers to a series of treatments performed on crop seeds to improve their quality, germination rate, and adaptability. These processing steps include washing, drying, grading, dehulling, peeling, and applying seed coating agents, all aimed at ensuring optimal seed growth after sowing. If seeds are not dried promptly after harvest, they will quickly heat up and deteriorate. Existing seed drying methods are mainly divided into open-air natural drying and mechanical drying. Natural drying is simple, easy, and low-cost, but it is limited by weather conditions, resulting in inconsistent drying times and difficulty in controlling the degree of dryness. Mechanical drying, on the other hand, cannot ensure that every seed is dried evenly, easily leading to some seeds being over-dried while others remain at a higher moisture level, thus affecting the overall seed quality.

[0003] Furthermore, after the seeds are dried, they still need to be sorted by size and other factors. For the same variety, some large and plump seeds have a higher germination rate, while some smaller and shriveled seeds have a lower germination rate. To ensure the germination rate, they are sorted to guarantee the subsequent germination rate. However, the current seed drying and sorting processes require different equipment, which not only increases processing costs but also adds steps, resulting in low efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a continuous drying and sorting device for agricultural seeds to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a continuous drying and sorting device for agricultural seeds, comprising a support frame, an outer shell fixedly connected to the upper end of the support frame, a lower side plate fixedly connected to the lower end of the outer shell at an angle downwards, and an upper side plate fixedly connected to the upper end of the outer shell at an angle upwards. A circular through hole is provided through the side of the lower side plate, a circular groove is provided through the side of the upper side plate, and an annular rotating groove is provided on the inner side wall of the upper side plate. An inner sorting roller and an outer sorting roller are rotatably mounted on the inner side of the outer shell. The inner sorting roller is disposed inside the outer sorting roller. A drive mechanism is installed at one end of the inner and outer sorting rollers near the upper side plate. A first spiral mechanism is installed on the inner side of the inner sorting roller. A first air guiding mechanism connected to the first spiral mechanism is installed at one end of the inner sorting roller near the lower side plate. A second spiral mechanism is installed on the inner side of the outer sorting roller. A second air guiding mechanism connected to the second spiral mechanism is installed at one end of the outer sorting roller near the lower side plate. An air intake mechanism is fixedly installed on the side of the lower side plate. Both the first and second air guiding mechanisms are connected to the air intake mechanism.

[0006] Preferably, the inner sorting roller has a plurality of first sorting holes spirally opened on its side, one end of the inner sorting roller is rotatably connected to a circular groove through a bearing, a feed hopper is fixedly installed on the side of the upper side plate, and an exhaust pipe is fixedly installed on the upper end of the outer shell.

[0007] Preferably, the outer sorting roller has a plurality of second sorting holes spirally opened on its side. One end of the outer sorting roller is rotatably connected to an annular rotating groove via a bearing, and the other end of the outer sorting roller is rotatably connected to a circular through hole via a bearing. The driving mechanism includes an outer gear ring fixedly sleeved on the outer side of the inner sorting roller, an inner gear ring fixedly connected to the inner side wall of the outer sorting roller, and a plurality of transmission gears fixedly connected in an annular array between the outer gear ring and the inner gear ring. A round shaft is fixedly connected to the side of each transmission gear, and each round shaft is rotatably connected to the upper side plate via a bearing. One end of one of the round shafts passes through the upper side plate and is fixedly sleeved with a pulley. A motor frame is fixedly connected to the outer side of the upper side plate, and a servo motor is fixedly mounted on the side of the motor frame. A pulley is fixedly sleeved on the motor shaft of the servo motor, and the two pulleys are connected by belt drive.

[0008] Preferably, the first spiral mechanism includes a first lifting plate fixedly connected to the inner sidewall of the inner sorting roller. The first lifting plate has an air guide groove. Two sets of spiral assemblies are fixedly connected in a ring array on the inner sidewall of the inner sorting roller. Each set of spiral assemblies consists of multiple first spiral plates. The multiple first spiral plates are spirally distributed and fixedly connected to the inner sorting roller and the first lifting plate respectively. Each first spiral plate has a first spiral groove, which communicates with the air guide groove. Each first spiral plate has multiple first air outlets equidistantly opened on the side near the lower side plate.

[0009] Preferably, the inner sorting roller has a first through groove on its side. The first air guiding mechanism includes a first annular plate fixedly sleeved on the outer side of the inner sorting roller. The outer side of the first annular plate has a first annular groove. The inner side of the first annular plate near the inner sorting roller has a first connecting groove. The first connecting groove is aligned with and connected to the first through groove. The outer side of the first annular plate is sleeved with a first limiting ring. The inner side of the first limiting ring has a first annular cavity. The first annular plate is rotatably connected to the first annular cavity. The outer side of the first limiting ring is fixedly connected with a support plate. One end of the support plate is fixedly connected to the lower side plate.

[0010] Preferably, the second spiral mechanism includes a second spiral plate fixedly connected to the inner wall of the outer sorting drum, a second spiral groove is provided in the second spiral plate, and a second air outlet is provided at equal intervals on the side of the second spiral plate facing the lower side plate. The second air outlet communicates with the second spiral groove, and a second lifting plate is fixedly connected to the second spiral plate. The second lifting plate is fixedly connected to the inner wall of the outer sorting drum.

[0011] Preferably, the outer sorting roller has a second through groove on its side. The second air guiding mechanism includes a second annular plate fixedly sleeved on the outer side of the outer sorting roller. The outer side of the second annular plate has a second annular groove. The inner side of the second annular plate near the outer sorting roller has a second connecting groove. The second connecting groove is aligned with and connected to the second through groove. The outer side of the second annular plate is sleeved with a second limiting ring. The inner side of the second limiting ring has a second annular cavity. The second limiting ring is fixedly connected to the inner wall of the lower side plate. The second annular plate is rotatably connected to the second annular cavity.

[0012] Preferably, the air intake mechanism includes a main air pipe disposed on the side of the lower side plate, one end of the main air pipe is fixedly connected to a first branch air pipe, the end of the first branch air pipe away from the main air pipe passes through the lower side plate and is fixedly connected to a second limiting ring, a second branch air pipe is fixedly connected to the side of the first branch air pipe, the end of the second branch air pipe away from the first branch air pipe is fixedly connected to the first limiting ring, a third branch air pipe is fixedly connected to the side of the main air pipe, the third branch air pipe communicates with the main air pipe, an air outlet pipe is fixedly connected to the lower end of the third branch air pipe, and a plurality of air outlet nozzles are fixedly installed at equal intervals on the side of the air outlet pipe.

[0013] Preferably, the outer side of the inner sorting roller is provided with a first scraper, which is fixedly connected to the second spiral plate through a fixing plate. The outer side of the outer sorting roller is provided with a second scraper, which is fixedly connected to the inner side wall of the outer shell. Cleaning mechanisms are installed at equal intervals on the sides of both the first and second scrapers. The cleaning mechanism includes a positioning frame. One end of the positioning frame is rotatably connected to a movable plate via a rotating shaft. A V-shaped block is integrally formed at the end of the movable plate away from the positioning frame. An installation groove is provided through the bottom of the V-shaped block. A roller is rotatably connected to the installation groove via a rotating shaft. A reset spring is fixedly installed between the movable plate and the positioning frame.

[0014] Preferably, a first hopper is fixedly connected to the side of the second limiting ring, a third collection box is provided at the lower end of the first hopper, a second hopper is fixedly connected to the outer side of the lower side plate, a second collection box is provided at the lower end of the second hopper, and a first collection box is provided inside the support frame.

[0015] Compared with the prior art, the beneficial effects of the present invention are: the present invention has a reasonable structural design and strong functionality, and has the following advantages: 1. Seeds are fed into the inner cavity of the inner sorting drum through the feed hopper. The inner and outer sorting drums are rotated by the drive mechanism. Hot air is introduced into the first air guiding mechanism, the second air guiding mechanism, and the third branch air pipe through the air intake mechanism. The seeds first roll down along the inner cavity of the inner sorting drum. The first spiral mechanism guides the seeds and prolongs the rolling time of the seeds in the inner cavity of the inner sorting drum, so that the seeds can be dried well by the hot air sprayed from the first air outlet and the air outlet nozzle, thus achieving good drying. At the same time, the seeds can repeatedly and multi-angle contact with the first sorting hole, thus achieving good sieving of the seeds and improving the sorting effect.

[0016] 2. Some smaller seeds will fall down through the first sorting hole into the inner cavity of the outer sorting drum. The seeds roll down through the inner cavity of the outer sorting drum and are guided by the second spiral mechanism. As the seeds roll through the inner cavity of the outer sorting drum, they can be effectively dried by the hot air sprayed from the second air outlet and the air nozzle. At the same time, the seeds can repeatedly and at multiple angles come into contact with the second sorting hole, which can effectively sieve the seeds and improve the sorting effect.

[0017] 3. The inner sorting roller, outer sorting roller, first spiral mechanism and second spiral mechanism work together to dry and sort seeds effectively, greatly improving the drying and sorting effect. Moreover, seed drying and sorting can be carried out simultaneously, greatly improving work efficiency.

[0018] 4. The cleaning mechanism effectively cleans the first and second sorting holes, preventing them from becoming clogged and ensuring efficient and effective sorting. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural view of the agricultural seed continuous drying and sorting device of the present invention; Figure 2 This is a side sectional view of the structure of the agricultural seed continuous drying and sorting device of the present invention; Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle; Figure 4 Cross-sectional view of a continuous drying and sorting device for agricultural seeds; Figure 5 This is a schematic diagram of the inner sorting roller, outer sorting roller, and drive mechanism of the present invention; Figure 6 This is a schematic diagram of the upper side plate and drive mechanism structure of the present invention; Figure 7 This is a side sectional view of the structure of the first and second air guiding mechanisms of the present invention; Figure 8 for Figure 7 Enlarged schematic diagram of the structure at point B; Figure 9 for Figure 7 Enlarged schematic diagram of the structure at point C; Figure 10 This is an exploded view of the outer sorting roller and the second air guiding mechanism of the present invention. Figure 11 This is a schematic diagram of the structure of the second spiral mechanism, the second lifting plate, the first scraper, and the cleaning mechanism of the present invention; Figure 12 This is an exploded view of the internal sorting roller and the first air guiding mechanism of the present invention; Figure 13 This is a schematic diagram of the first helical mechanism of the present invention; Figure 14 This is a schematic diagram of the cleaning mechanism structure of the present invention.

[0020] In the diagram: 1. Support frame; 11. Outer shell; 12. Lower side plate; 13. Upper side plate; 14. Circular groove; 15. Annular rotating groove; 16. Exhaust pipe; 17. Feed hopper; 2. Inner sorting roller; 21. First sorting hole; 22. First through groove; 23. First annular plate; 24. First annular groove; 25. First connecting groove; 26. First limiting ring; 27. First annular cavity; 28. Support plate; 29. ​​External toothed ring; 3. Outer sorting roller; 31. Second sorting hole; 32. Second through groove; 33. Second annular plate; 34. Second annular groove; 35. Second connecting groove; 36. Second limiting ring; 37. Second annular cavity; 38. Internal toothed ring; 4. First lifting plate; 1. Air guide groove; 42. First spiral plate; 43. First spiral groove; 44. First air outlet; 5. Second spiral plate; 51. Second spiral groove; 52. Second air outlet; 53. Second lifting plate; 54. First scraper; 55. Second scraper; 6. Positioning frame; 61. Movable plate; 62. V-block; 63. Roller; 64. Reset spring; 7. Transmission gear; 71. Round shaft; 72. Motor frame; 8. Main air pipe; 81. First branch air pipe; 82. Second branch air pipe; 83. Third branch air pipe; 84. Air outlet pipe; 85. Air outlet nozzle; 9. First discharge hopper; 91. Second discharge hopper; 92. First collection box; 93. Second collection box; 94. Third collection box. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1 to 14 This invention provides a technical solution: a continuous drying and sorting device for agricultural seeds, including a support frame 1, an outer shell 11 fixedly connected to the upper end of the support frame 1, the outer shell 11 being inclined, the two ends and the bottom of the outer shell 11 being open, a lower side plate 12 fixedly connected to the downward inclined end of the outer shell 11, an upper side plate 13 fixedly connected to the upward inclined end of the outer shell 11, the lower ends of the lower side plate 12 and the upper side plate 13 being fixedly connected to the support frame 1, a circular through hole being opened through the side of the lower side plate 12, a circular groove 14 being opened through the side of the upper side plate 13, an annular rotating groove 15 being opened on the inner side wall of the upper side plate 13, the annular rotating groove 15 being connected to the circular groove 14 and the two being coaxial, an inner sorting roller 2 and an outer sorting roller 3 being rotatably installed on the inner side of the outer shell 11, the inner sorting roller 2 and the outer sorting roller 3 being inclined downward, the end of the inner sorting roller 2 and the outer sorting roller 3 near the lower side plate 12 being the lower end; The inner sorting roller 2 is located inside the outer sorting roller 3. The inner sorting roller 2 and the outer sorting roller 3 are coaxial. A drive mechanism is installed at one end of the inner sorting roller 2 and the outer sorting roller 3 near the upper side plate 13. The drive mechanism drives the inner sorting roller 2 and the outer sorting roller 3 to rotate. The rotation directions of the inner sorting roller 2 and the outer sorting roller 3 are opposite. A first spiral mechanism is installed on the inner side of the inner sorting roller 2. A first air guide mechanism connected to the first spiral mechanism is installed at one end of the inner sorting roller 2 near the lower side plate 12. A second spiral mechanism is installed on the inner side of the outer sorting roller 3. A second air guide mechanism connected to the second spiral mechanism is installed at one end of the outer sorting roller 3 near the lower side plate 12. An air intake mechanism is fixedly installed on the side of the lower side plate 12. Both the first air guide mechanism and the second air guide mechanism are connected to the air intake mechanism.

[0023] Please see Figure 1 and Figure 2 The inner sorting roller 2 has a plurality of first sorting holes 21 spirally opened on its side. The plurality of first sorting holes 21 are evenly distributed between the spacing of the first spiral mechanism. The seeds are guided and conveyed by the first spiral mechanism, which prolongs the contact time between the seeds and the first sorting holes 21 and improves the screening effect. One end of the inner sorting roller 2 is rotatably connected to the circular groove 14 through a bearing. The feed hopper 17 is fixedly installed on the side of the upper side plate 13. The lower end of the feed hopper 17 extends obliquely downward to the inner cavity of the inner sorting roller 2. The exhaust pipe 16 is fixedly installed on the upper end of the outer shell 11. The inner cavity of the exhaust pipe 16 is connected to the inner cavity of the outer shell 11.

[0024] One end of the exhaust pipe 16 is connected to the air extraction device through a pipe. The air extraction device generates suction on the inner cavity of the outer casing 11 through the pipe and the exhaust pipe 16, thereby drawing away the humid gas inside the outer casing 11.

[0025] Please see Figure 2 and Figure 5The outer sorting roller 3 has multiple second sorting holes 31 spirally opened on its side. These holes are evenly distributed between the spacing of the second spiral mechanism, guiding and conveying the seeds through the second spiral mechanism, extending the contact time between the seeds and the second sorting holes 31, and improving the screening effect. One end of the outer sorting roller 3 is rotatably connected to the annular rotating groove 15 via a bearing, and the other end is rotatably connected to a circular through hole via a bearing. The driving mechanism includes an external toothed ring 29 fixedly sleeved on the outer side of the inner sorting roller 2. The external toothed ring 29 is located at the end of the inner sorting roller 2 near the upper side plate 13. An internal toothed ring 38 is fixedly connected to the inner side wall of the outer sorting roller 3. A plurality of transmission gears 7 are fixedly connected in a ring array between the outer gear ring 29 and the inner gear ring 38, located at one end of the outer sorting roller 3 near the upper side plate 13. The outer gear ring 29, the inner gear ring 38 and the transmission gears 7 are all rotatably mounted in the annular rotating groove 15. A round shaft 71 is fixedly connected to the side of each transmission gear 7. Each round shaft 71 is rotatably connected to the upper side plate 13 through a bearing. One end of one round shaft 71 passes through the upper side plate 13 and is fixedly sleeved with a pulley. A motor frame 72 is fixedly connected to the outer side of the upper side plate 13. A servo motor is fixedly mounted on the side of the motor frame 72. A pulley is fixedly sleeved on the motor shaft of the servo motor. The two pulleys are connected by belt drive.

[0026] The diameter of the second sorting hole 31 is smaller than that of the first sorting hole 21, so that larger and plump seeds remain in the inner cavity of the inner sorting roller 2 and roll down along the inner cavity of the inner sorting roller 2 for collection, and relatively smaller seeds remain in the inner cavity of the outer sorting roller 3 and roll down along the inner cavity of the outer sorting roller 3 for collection; some shriveled, broken and smaller seeds fall down along the second sorting hole 31 for collection.

[0027] The servo motor shaft drives the pulley and belt to rotate, which in turn drives the transmission gear 7 to rotate. The transmission gear 7 drives the outer gear ring 29 and the inner gear ring 38 to rotate synchronously. At this time, the rotation directions of the outer gear ring 29 and the inner gear ring 38 are opposite. The outer gear ring 29 drives the inner sorting roller 2 to rotate, and the inner gear ring 38 drives the outer sorting roller 3 to rotate. The rotation directions of the inner sorting roller 2 and the outer sorting roller 3 are opposite. When the inner sorting roller 2 rotates, it drives the first spiral mechanism to rotate synchronously. When the outer sorting roller 3 rotates, it drives the second spiral mechanism to rotate synchronously. The spiral directions of the first spiral mechanism and the second spiral mechanism are opposite. When the first spiral mechanism and the second spiral mechanism rotate, they both push the seeds downward.

[0028] Please see Figure 2 , Figure 3 and Figure 13The first spiral mechanism includes a first lifting plate 4 fixedly connected to the inner sidewall of the inner sorting roller 2. The first lifting plate 4 has an air guide groove 41. Two sets of spiral assemblies are fixedly connected in a ring array on the inner sidewall of the inner sorting roller 2. Each set of spiral assemblies consists of multiple first spiral plates 42. The multiple first spiral plates 42 are spirally distributed and fixedly connected to the inner sorting roller 2 and the first lifting plate 4, respectively. Each first spiral plate 42 has a first spiral groove 43, which is connected to the air guide groove 41. Each first spiral plate 42 has multiple first air outlets 44 equidistantly opened on the side near the lower side plate 12. The first air outlets 44 are connected to the first spiral grooves 43. The first air outlets 44 are conical holes, that is, the outward end of the first air outlet 44 is flared and the inward end is constricted, forming a small inlet and a large outlet, so that the gas can be blown out well, while preventing seeds from blocking the air outlet.

[0029] Hot air is introduced into the air guide groove 41 through the first air guide mechanism. The hot air enters the first spiral groove 43 along the air guide groove 41. Finally, the hot air is sprayed out along the first air outlet 44 on the side of the first spiral plate 42 and blown onto the seeds. The inner sorting roller 2 drives the seeds to roll down along its inner cavity. At the same time, the inner sorting roller 2 drives the first lifting plate 4 and the first spiral plate 42 to rotate synchronously, so that the seeds roll along the spiral surface of the first spiral plate 42, prolonging the rolling time of the seeds in the inner sorting roller 2, thereby improving the sorting effect. The seeds contact the side of the first spiral plate 42 where the first air outlet 44 is not opened. When the seeds roll to the side of the first lifting plate 4, they will accumulate on the side of the first lifting plate 4. At the same time, the accumulated seeds will be driven by the first lifting plate 4 to rotate upwards at a certain angle along with the inner sorting roller 2. When the first lifting plate 4 rotates more than 90 degrees upwards from the bottom, the first lifting plate 4 will tilt downwards, and the seeds will roll downwards. This process is repeated, which can effectively lift and drop the seeds, achieve a good stirring effect, and thus evenly dry and sort the seeds.

[0030] Please see Figure 2 , Figure 3 , Figure 7 , Figure 8 and Figure 12The inner sorting roller 2 has a first through groove 22 on its side. The first air guiding mechanism includes a first annular plate 23 fixedly sleeved on the outer side of the inner sorting roller 2. The outer side of the first annular plate 23 has a first annular groove 24. The inner side of the first annular plate 23 near the inner side of the inner sorting roller 2 has a first connecting groove 25. The first connecting groove 25 communicates with the inner cavity of the first annular groove 24. The first connecting groove 25 is aligned with and communicates with the first through groove 22. The outer side of the first annular plate 23 is sleeved with a first limiting ring 26. The inner side of the first limiting ring 26 has a first annular cavity 27. The first annular plate 23 and the first annular cavity 27 are rotatably connected. A sealing ring or the like can be set between them to achieve a rotatable sealing connection. The outer side of the first limiting ring 26 is fixedly connected with a support plate 28. One end of the support plate 28 is fixedly connected to the lower side plate 12.

[0031] The first limiting ring 26 can be composed of two half rings, which facilitates processing and assembly. The support plate 28, the first limiting ring 26 and the first annular plate 23 work together to support and limit one end of the inner sorting roller 2, ensuring that the inner sorting roller 2 can rotate stably.

[0032] As the inner sorting roller 2 rotates, it drives the first annular plate 23 to rotate synchronously. The first annular plate 23 rotates along the first annular cavity 27, and the first annular groove 24 is connected to the first annular cavity 27.

[0033] Please see Figure 2 , Figure 3 and Figure 11 The second spiral mechanism includes a second spiral plate 5 fixedly connected to the inner wall of the outer sorting roller 3. A second spiral groove 51 is provided in the second spiral plate 5. A second air outlet 52 is provided at equal intervals on the side of the second spiral plate 5 facing the lower side plate 12. The second air outlet 52 communicates with the second spiral groove 51. The second air outlet 52 has the same structure as the first air outlet 44. A second lifting plate 53 is fixedly connected to the second spiral plate 5. The second lifting plate 53 is fixedly connected to the inner wall of the outer sorting roller 3.

[0034] The second spiral plate 5 has the opposite spiral direction to the first spiral plate 42.

[0035] Hot air is introduced into the second spiral groove 51 through the second air guiding mechanism. The hot air flows along the inner cavity of the second spiral groove 51. Finally, the hot air is sprayed out through the second air outlet 52 on the side of the second spiral plate 5 and blown onto the seeds. The outer sorting roller 3 drives the seeds to roll down along its inner cavity. At the same time, the outer sorting roller 3 drives the second lifting plate 53 and the second spiral plate 5 to rotate synchronously, so that the seeds roll along the spiral surface of the second spiral plate 5, prolonging the rolling time of the seeds in the outer sorting roller 3, thereby improving the sorting effect. The seeds contact the side of the second spiral plate 5 without the air outlet. When the seeds roll to the side of the second lifting plate 53, they will accumulate on the side of the second lifting plate 53. At the same time, the second lifting plate 53 will drive the accumulated seeds to rotate upward at a certain angle along with the outer sorting roller 3. When the second lifting plate 53 rotates more than 90 degrees upward from the bottom, the second lifting plate 53 will tilt downward, and the seeds will roll downward. This process is repeated, which can effectively lift and drop the seeds, achieve a good stirring effect, and thus evenly dry and sort the seeds.

[0036] Please see Figure 2 , Figure 7 , Figure 9 and Figure 10 The outer sorting roller 3 has a second through groove 32 on its side. The second air guiding mechanism includes a second annular plate 33 fixedly sleeved on the outer side of the outer sorting roller 3. The outer side of the second annular plate 33 has a second annular groove 34. The inner side of the second annular plate 33 near the outer sorting roller 3 has a second connecting groove 35. The second connecting groove 35 communicates with the second annular groove 34. The second connecting groove 35 is aligned with and communicates with the second through groove 32. The outer side of the second annular plate 33 is sleeved with a second limiting ring 36. The inner side of the second limiting ring 36 has a second annular cavity 37. The second limiting ring 36 is fixedly connected to the inner side wall of the lower side plate 12. The second annular plate 33 and the second annular cavity 37 are rotatably connected. A sealing ring or the like can be set between them to achieve a rotatable sealing connection.

[0037] The second limiting ring 36 can be composed of two half rings, which is convenient for processing and assembly. When the outer sorting roller 3 rotates, it drives the second annular plate 33 to rotate synchronously. The second annular plate 33 rotates along the second annular cavity 37, and the second annular groove 34 is connected to the second annular cavity 37.

[0038] Please see Figure 1 and Figure 2The air intake mechanism includes a main air pipe 8 disposed on the side of the lower side plate 12. The main air pipe 8 can be mounted on the lower side plate 12 via a bracket. One end of the main air pipe 8 is fixedly connected to a first branch air pipe 81. The end of the first branch air pipe 81 away from the main air pipe 8 passes through the lower side plate 12 and is fixedly connected to a second limiting ring 36. The first branch air pipe 81 communicates with the second annular cavity 37 and the second annular groove 34. A second branch air pipe 82 is fixedly connected to the side of the first branch air pipe 81. The second branch air pipe 82 communicates with the first branch air pipe 81. The end of the second branch air pipe 82 away from the first branch air pipe 81 is fixedly connected to the first limiting ring 26. The bronchus 82 is connected to the first annular cavity 27 and the first annular groove 24. The side of the main air pipe 8 is fixedly connected to the third bronchus 83, which is connected to the main air pipe 8. The lower end of the third bronchus 83 is inclined downward and extends into the inner cavity of the outer sorting roller 3. The lower end of the third bronchus 83 is fixedly connected to the air outlet pipe 84, which is connected to the third bronchus 83. Multiple air outlet nozzles 85 are fixedly installed at equal intervals on the side of the air outlet pipe 84. The multiple air outlet nozzles 85 are respectively directed towards the inner sorting roller 2 and the outer sorting roller 3, so that hot air can be evenly introduced into the inner cavity of the inner sorting roller 2 and the outer sorting roller 3.

[0039] The main air pipe 8 is connected to the air outlet of the hot air blower through a hot air pipe. The hot air blower sends hot air into the main air pipe 8 through the hot air pipe. The hot air enters the first branch pipe 81, the second branch pipe 82 and the third branch pipe 83 along the main air pipe 8 respectively. Hot air enters the second annular groove 34 along the first bronchus 81, passes through the second connecting groove 35 and the second through groove 32 and enters the second spiral groove 51, and finally sprays out along the second air outlet 52 to dry the seeds. Hot air enters the first annular groove 24 along the second bronchus 82, passes through the first connecting groove 25 and the first through groove 22 and enters the air guide groove 41. Hot air enters the first spiral groove 43 along the air guide groove 41 and finally sprays out along the first air outlet 44 to dry the seeds. Hot air enters the outlet pipe 84 along the third branch pipe 83, and finally the hot air is sprayed out along the outlet nozzle 85, which blows into the inner cavity of the inner sorting roller 2 and the outer sorting roller 3, thereby improving the drying effect.

[0040] Please see Figure 4 , Figure 10 and Figure 14The outer side of the inner sorting roller 2 is provided with a first scraper 54, which is fixedly connected to the second spiral plate 5 via a fixing plate. The outer side of the outer sorting roller 3 is provided with a second scraper 55, which is fixedly connected to the inner side wall of the outer casing 11. Cleaning mechanisms are installed at equal intervals on the sides of the first scraper 54 and the second scraper 55. The cleaning mechanisms are used to clean the seeds stuck in the first sorting hole 21 and the second sorting hole 31 to prevent the seeds from causing blockage and affecting the sorting of the seeds. The cleaning mechanism includes a positioning frame 6. The positioning frame 6 in the side cleaning mechanism of the inner sorting roller 2 is fixedly connected to the first scraper 54, and the positioning frame 6 in the side cleaning mechanism of the outer sorting roller 3 is fixedly connected to the second scraper 55. One end of the positioning frame 6 is rotatably connected to a movable plate 61 via a rotating shaft. A V-shaped block 62 is integrally formed at the end of the movable plate 61 away from the positioning frame 6. An installation groove is opened through the bottom of the V-shaped block 62. A roller 63 is rotatably connected in the installation groove via a rotating shaft. A reset spring 64 is fixedly installed between the movable plate 61 and the positioning frame 6. The reset spring 64 applies elastic force to the movable plate 61, so that the movable plate 61, the V-shaped block 62 and the roller 63 tend to stay away from the positioning frame 6, thereby enabling effective cleaning.

[0041] Please see Figure 1 , Figure 2 , Figure 4 and Figure 12 The second limiting ring 36 is fixedly connected to the side of the first hopper 9, which is located at the lower end of the inner sorting roller 2. The lower end of the first hopper 9 is provided with a third collection box 94. The first hopper 9 is used to guide the seeds rolling out of the inner cavity of the inner sorting roller 2. The seeds in the inner sorting roller 2 can fall into the third collection box 94. The first hopper 9 is fixedly connected to the lower side plate 12 through a reinforcing plate. The outer side of the lower side plate 12 is fixedly connected to the second hopper 91. The second hopper 91 is distributed on the outside of the circular through hole. The lower end of the second hopper 91 is provided with a second collection box 93. The length of the second hopper 91 is less than the length of the first hopper 9. The second hopper 91 is used to guide the seeds rolling out of the inner cavity of the outer sorting roller 3. The seeds in the outer sorting roller 3 can fall into the second collection box 93. The support frame 1 is provided with a first collection box 92, so that the seeds passing through the second sorting hole 31 fall downward into the first collection box 92.

[0042] Working principle: During operation, seeds are fed into the inner cavity of the inner sorting roller 2 through the feed hopper 17. The inner sorting roller 2 and the outer sorting roller 3 are rotated by the drive mechanism, and the rotation directions of the inner sorting roller 2 and the outer sorting roller 3 are opposite. When the inner sorting roller 2 rotates, it drives the first spiral mechanism to rotate synchronously. When the outer sorting roller 3 rotates, it drives the second spiral mechanism to rotate synchronously. When the first spiral mechanism and the second spiral mechanism rotate, they both push the seeds to move downwards. Hot air is introduced into the first air guiding mechanism, the second air guiding mechanism and the third branch pipe 83 through the air intake mechanism. The hot air enters the first spiral mechanism, the second spiral mechanism and the air outlet pipe 84, and finally sprays out along the air outlet nozzle 85, the first air outlet hole 44 and the second air outlet hole 52. The seeds first roll downwards along the inner cavity of the inner sorting roller 2, while being guided by the first spiral mechanism to prolong the rolling time within the inner cavity of the inner sorting roller 2. Simultaneously, the first lifting plate 4 lifts and throws the seeds, achieving a good stirring effect. This allows the seeds to be effectively dried by the hot air sprayed from the first air outlet 44 and the air nozzle 85. Furthermore, the seeds can repeatedly and from multiple angles contact the first sorting hole 21, thus effectively sieving the seeds and improving the sorting efficiency. Larger, plump seeds cannot pass through the first sorting hole 21 and remain in the inner cavity of the inner sorting roller 2. They roll down along the inner cavity of the inner sorting roller 2 into the first hopper 9. Larger, plump seeds fall down along the first hopper 9 into the third collection box 94 for collection. Smaller seeds fall down through the first sorting hole 21 into the inner cavity of the outer sorting roller 3. As the seeds roll down the inner cavity, the second spiral mechanism guides them. Simultaneously, the second lifting plate 53 lifts and throws the seeds, achieving a good mixing effect. This allows the seeds to be effectively dried by the hot air ejected from the second air outlet 52 and the air nozzle 85. Furthermore, the seeds repeatedly and from multiple angles come into contact with the second sorting hole 31, effectively sieving them and improving the sorting efficiency. Smaller seeds cannot pass through the second sorting hole 31 and remain in the inner cavity of the outer sorting roller 3. They roll down along the inner cavity of the outer sorting roller 3 and enter the second hopper 91. The smaller seeds fall down along the second hopper 91 into the second collection box 93 for collection. Some shriveled, broken, and smaller seeds fall down along the second sorting hole 31 and are collected through the first collection box 92.

[0043] This process is repeated, allowing for continuous drying and sorting of the seeds.

[0044] The inner sorting roller 2, outer sorting roller 3, first spiral mechanism and second spiral mechanism work together to dry and sort seeds effectively, greatly improving the drying and sorting effect. Moreover, seed drying and sorting can be carried out simultaneously, greatly improving work efficiency.

[0045] When the inner sorting roller 2 rolls, its outer side contacts the first scraper 54, which cleans the seeds blocked on the side of the inner sorting roller 2. At the same time, the inner sorting roller 2 rolls and contacts the roller 63 in the cleaning mechanism. When the roller 63 in the cleaning mechanism is aligned with the first sorting hole 21, the lower end of the V-block 62 and the roller 63 are engaged in the first sorting hole 21 under the action of the spring force of the reset spring 64, thereby effectively cleaning the seeds blocked in the first sorting hole 21. When the outer sorting roller 3 rolls, its outer side contacts the second scraper 55. The second scraper 55 cleans the seeds blocking the side of the outer sorting roller 3. At the same time, the outer sorting roller 3 rolls and contacts the roller 63 in the cleaning mechanism. When the roller 63 in the cleaning mechanism is aligned with the second sorting hole 31, the lower end of the V-block 62 and the roller 63 are engaged in the second sorting hole 31 under the action of the spring force of the reset spring 64, thereby effectively cleaning the seeds blocking the second sorting hole 31.

[0046] The cleaning mechanism effectively cleans the first sorting hole 21 and the second sorting hole 31, preventing them from becoming clogged and ensuring efficient and effective sorting.

[0047] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A continuous drying and sorting device for agricultural seeds, comprising a support frame (1), characterized in that: The upper end of the support frame (1) is fixedly connected to the outer shell (11), the lower side plate (12) is fixedly connected to the lower end of the outer shell (11) at an angle downward, and the upper side plate (13) is fixedly connected to the upper end of the outer shell (11) at an angle upward. A circular through hole is provided through the side of the lower side plate (12), and a circular groove (14) is provided through the side of the upper side plate (13). An annular rotating groove (15) is provided on the inner side wall of the upper side plate (13). An inner sorting roller (2) and an outer sorting roller (3) are rotatably installed on the inner side of the outer shell (11). The inner sorting roller (2) is located inside the outer sorting roller (3). A drive mechanism is installed at one end of the inner sorting roller (2) and the outer sorting roller (3) near the upper side plate (13). A first spiral mechanism is installed on the inner side of the inner sorting roller (2). A first air guide mechanism connected to the first spiral mechanism is installed at one end of the inner sorting roller (2) near the lower side plate (12). A second spiral mechanism is installed on the inner side of the outer sorting roller (3). A second air guide mechanism connected to the second spiral mechanism is installed at one end of the outer sorting roller (3) near the lower side plate (12). An air intake mechanism is fixedly installed on the side of the lower side plate (12). Both the first air guide mechanism and the second air guide mechanism are connected to the air intake mechanism.

2. The agricultural seed continuous drying and sorting device according to claim 1, characterized in that: The inner sorting roller (2) has a plurality of first sorting holes (21) spirally opened on its side. One end of the inner sorting roller (2) is rotatably connected to the circular groove (14) through a bearing. The feed hopper (17) is fixedly installed on the side of the upper side plate (13). The exhaust pipe (16) is fixedly installed on the upper end of the outer shell (11).

3. The agricultural seed continuous drying and sorting device according to claim 1, characterized in that: The outer sorting roller (3) has a plurality of second sorting holes (31) spirally opened on its side. One end of the outer sorting roller (3) is rotatably connected to the annular rotating groove (15) through a bearing, and the other end of the outer sorting roller (3) is rotatably connected to the circular through hole through a bearing. The driving mechanism includes an outer toothed ring (29) fixedly sleeved on the outer side of the inner sorting roller (2), and an inner toothed ring (38) fixedly connected to the inner side wall of the outer sorting roller (3). The outer toothed ring (29) and the inner toothed ring (38) are fixedly connected in an annular array. Multiple transmission gears (7) are connected, and a round shaft (71) is fixedly connected to the side of each transmission gear (7). Each round shaft (71) is rotatably connected to the upper side plate (13) through a bearing. One end of one of the round shafts (71) passes through the upper side plate (13) and is fixedly sleeved with a pulley. A motor frame (72) is fixedly connected to the outer side of the upper side plate (13). A servo motor is fixedly installed on the side of the motor frame (72). A pulley is fixedly sleeved on the motor shaft of the servo motor. The two pulleys are connected by belt drive.

4. The agricultural seed continuous drying and sorting device according to claim 1, characterized in that: The first spiral mechanism includes a first lifting plate (4) fixedly connected to the inner side wall of the inner sorting roller (2). The first lifting plate (4) has an air guide groove (41) in it. Two sets of spiral components are fixedly connected in a ring array on the inner side wall of the inner sorting roller (2). Each set of spiral components consists of multiple first spiral plates (42). The multiple first spiral plates (42) are spirally distributed and fixedly connected to the inner sorting roller (2) and the first lifting plate (4) respectively. Each first spiral plate (42) has a first spiral groove (43) in it. The first spiral groove (43) is connected to the air guide groove (41). Each first spiral plate (42) has multiple first air outlet holes (44) equidistantly opened on the side near the lower side plate (12).

5. The agricultural seed continuous drying and sorting device according to claim 4, characterized in that: The inner sorting roller (2) has a first through groove (22) on its side. The first air guiding mechanism includes a first annular plate (23) fixedly sleeved on the outer side of the inner sorting roller (2). The outer side of the first annular plate (23) has a first annular groove (24). The inner side of the first annular plate (23) near the inner side of the inner sorting roller (2) has a first connecting groove (25). The first connecting groove (25) is aligned with and connected to the first through groove (22). The outer side of the first annular plate (23) is sleeved with a first limiting ring (26). The inner side of the first limiting ring (26) has a first annular cavity (27). The first annular plate (23) and the first annular cavity (27) are rotatably connected. The outer side of the first limiting ring (26) is fixedly connected with a support plate (28). One end of the support plate (28) is fixedly connected to the lower side plate (12).

6. The agricultural seed continuous drying and sorting device according to claim 5, characterized in that: The second spiral mechanism includes a second spiral plate (5) fixedly connected to the inner wall of the outer sorting roller (3). A second spiral groove (51) is provided in the second spiral plate (5). A second air outlet (52) is provided at equal intervals on the side of the second spiral plate (5) facing the lower side plate (12). The second air outlet (52) communicates with the second spiral groove (51). A second lifting plate (53) is fixedly connected to the second spiral plate (5). The second lifting plate (53) is fixedly connected to the inner wall of the outer sorting roller (3).

7. The agricultural seed continuous drying and sorting device according to claim 6, characterized in that: The outer sorting roller (3) has a second through groove (32) on its side. The second air guiding mechanism includes a second annular plate (33) fixedly sleeved on the outer side of the outer sorting roller (3). The outer side of the second annular plate (33) has a second annular groove (34). The inner side of the second annular plate (33) near the outer sorting roller (3) has a second connecting groove (35). The second connecting groove (35) is aligned with and connected to the second through groove (32). The outer side of the second annular plate (33) is sleeved with a second limiting ring (36). The inner side of the second limiting ring (36) has a second annular cavity (37). The second limiting ring (36) is fixedly connected to the inner wall of the lower side plate (12). The second annular plate (33) is rotatably connected to the second annular cavity (37).

8. The agricultural seed continuous drying and sorting device according to claim 7, characterized in that: The air intake mechanism includes a main air pipe (8) disposed on the side of the lower side plate (12). One end of the main air pipe (8) is fixedly connected to a first branch air pipe (81). The end of the first branch air pipe (81) away from the main air pipe (8) passes through the lower side plate (12) and is fixedly connected to a second limiting ring (36). The side of the first branch air pipe (81) is fixedly connected to a second branch air pipe (82). The end of the second branch air pipe (82) away from the first branch air pipe (81) is fixedly connected to a first limiting ring (26). The side of the main air pipe (8) is fixedly connected to a third branch air pipe (83). The third branch air pipe (83) communicates with the main air pipe (8). The lower end of the third branch air pipe (83) is fixedly connected to an air outlet pipe (84). Multiple air outlet nozzles (85) are fixedly installed at equal intervals on the side of the air outlet pipe (84).

9. The agricultural seed continuous drying and sorting device according to claim 1, characterized in that: The outer side of the inner sorting roller (2) is provided with a first scraper (54), which is fixedly connected to the second spiral plate (5) through a fixing plate. The outer side of the outer sorting roller (3) is provided with a second scraper (55), which is fixedly connected to the inner wall of the outer shell (11). The sides of the first scraper (54) and the second scraper (55) are both equidistantly equipped with cleaning mechanisms. The cleaning mechanism includes a positioning frame (6), one end of which is rotatably connected to a movable plate (61) via a rotating shaft. A V-shaped block (62) is integrally formed at the end of the movable plate (61) away from the positioning frame (6). An installation groove is provided through the bottom of the V-shaped block (62), and a roller (63) is rotatably connected in the installation groove via a rotating shaft. A reset spring (64) is fixedly installed between the movable plate (61) and the positioning frame (6).

10. The agricultural seed continuous drying and sorting device according to claim 7, characterized in that: The second limiting ring (36) is fixedly connected to the side of the first hopper (9), and the lower end of the first hopper (9) is provided with a third collection box (94). The outer side of the lower side plate (12) is fixedly connected to the second hopper (91), and the lower end of the second hopper (91) is provided with a second collection box (93). The support frame (1) is provided with a first collection box (92).

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