Air suction and air blowing structure of digital compound seeder

Abstract

The invention relates to the technical field of seeding equipment, and discloses an air-suction air-blowing structure of a digital composite seeder, the air-suction air-blowing structure comprises a main body support, an inner cavity of the main body support is fixedly assembled with an inner support, and the top of the inner support is fixedly assembled with a right side limiting head. A first seed hole, a second seed hole, a third seed hole and a fourth seed hole are formed in the seed roller, the first seed hole, the second seed hole, the third seed hole and the fourth seed hole can sequentially adsorb seeds from small to large, and when the small seeds need to be adsorbed, the sucking and blowing disc and a feeding groove in the storage hopper are adjusted to correspond to the first seed hole. When large seeds need to be sucked, the sucking and blowing disc and a feeding groove in the storage hopper are adjusted to correspond to a fourth seed hole, so that the device can sow the seeds with different sizes and also has the advantage of fast seed type sowing adjustment, and the problems that according to existing sowing equipment, a plurality of seed sucking discs need to be replaced, and the sowing speed is high are solved. Therefore, the seed sowing efficiency is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of seeding equipment, and particularly to an air suction and air blowing structure of a digital composite seeder. Background Art

[0002] The objects planted by a seeder are the seeds of crops or coated seeds made into pellet form. A seeder is an agricultural machine used for accurately and efficiently sowing crop seeds. Its main function is to evenly sow seeds one by one into the soil, replacing manual stooping for sowing. Existing seeders can sow different crop seeds with not much difference in volume, so the same seed suction cup can be used for sowing. However, there is a relatively large difference in the volume of seeds between different crops. For example, the volume difference between sesame seeds and corn seeds is relatively large, and sesame and corn cannot be sown using the same seed suction cup. When sowing, the seed suction cup needs to be replaced. Existing seeding equipment can sow many rows at the same time, so multiple seed suction cups need to be replaced, resulting in a lower seed sowing efficiency. Summary of the Invention

[0003] The present invention provides an air suction and air blowing structure of a digital composite seeder, which solves the problems raised in the above background art.

[0004] The present invention provides the following technical solution: An air suction and air blowing structure of a digital composite seeder includes a main body bracket. An internal bracket is fixedly assembled in the inner cavity of the main body bracket. A right side limit head is fixedly assembled at the top of the internal bracket. A left side limit head is provided on the left side of the right side limit head. The outer walls of the right side limit head and the left side limit head are both movably sleeved with a seed drum. A plurality of seed holes one, two, three, and four are opened on the outer wall of the seed drum. The seed holes one, two, three, and four are evenly arranged from left to right in sequence. An air suction and blowing disc is movably connected to the inner wall of the seed drum. An air suction groove and a seed discharging groove are respectively opened on the outer wall of the air suction and blowing disc. A suction pipe connection hole is opened on the outer wall of the air suction and blowing disc. An air suction communication hole is opened on the outer edge of the air suction groove. The air suction communication hole is communicated with the suction pipe connection hole. A blowing pipe connection hole is opened on the outer wall of the air suction and blowing disc. A blowing air communication hole is opened on the outer edge of the seed discharging groove. The blowing air communication hole is communicated with the blowing pipe connection hole. A main shaft is fixedly assembled on the inner wall of the air suction and blowing disc. The main shaft is slidably connected to the right side limit head and the left side limit head.

[0005] As a preferred technical solution of the present invention, a storage hopper is provided on the outer wall of the seed drum. A feeding groove is opened on the inner wall of the storage hopper. A discharging hopper is fixedly assembled on the inner wall of the storage hopper. A discharging pipe is fixedly assembled at the bottom of the discharging hopper.

[0006] As a preferred technical solution of the present invention, a large gear disc is fixedly assembled on the outer wall of the seed drum. A toothed belt is meshed with the outer edge of the large gear disc. A small gear disc is meshed with the inner wall of the toothed belt. A rotating rod is fixedly assembled on the inner wall of the small gear disc. The rotating rod is fixedly sleeved on the power output shaft of the driving motor, and the driving motor is installed on the main body bracket.

[0007] As a preferred technical solution of the present invention, a transverse hole is provided in the inner wall of the main shaft. An internal thread sleeve is fixedly assembled on the inner wall of the transverse hole. A threaded rod is threadedly connected to the inner wall of the internal thread sleeve. The threaded rod is fixedly sleeved on the power output shaft of the adjusting servo motor, and the adjusting servo motor is fixedly mounted on the main body bracket through a mounting bracket.

[0008] As a preferred technical solution of the present invention, connecting brackets are fixedly assembled on the outer edges of the material storage hopper and the discharge hopper. The connecting brackets are fixedly assembled on the main shaft. Fixed brackets are fixedly assembled at both ends of the main shaft, and the fixed brackets are fixedly assembled on the main body bracket.

[0009] As a preferred technical solution of the present invention, a front support piece is fixedly assembled at the bottom of the discharge hopper, and a rear support piece is fixedly assembled at the bottom of the material storage hopper. Slide rods are slidably connected to the inner walls of the rear support piece and the front support piece, and the slide rods are fixedly assembled on the inner support bracket.

[0010] As a preferred technical solution of the present invention, a plurality of limiting holes are provided in the outer edge of the suction and blowing disc. A fixed long rod is slidably connected to the inner wall of the limiting hole, and the fixed long rod is fixedly assembled on the fixed bracket.

[0011] As a preferred technical solution of the present invention, a pipe connector is fixedly assembled on the inner wall of the suction pipe connection hole. A suction seed pipe is fixedly assembled on the inner wall of the pipe connector. One end of the suction seed pipe away from the suction and blowing disc is fixedly assembled with a connection tank, and the connection tank is connected to the air inlet of the blower through a long pipe.

[0012] As a preferred technical solution of the present invention, a connection pipe is fixedly sleeved on the air outlet of the blower. A transverse pipe is fixedly assembled at one end of the connection pipe away from the blower. A seeding pipe penetrates through the inner cavity of the transverse pipe. One end of the seeding pipe away from the transverse pipe is installed on the discharge pipe.

[0013] As a preferred technical solution of the present invention, a seed blowing pipe penetrates through the inner cavity of the transverse pipe. One end of the seed blowing pipe away from the transverse pipe is installed on the blowing pipe connection hole. Both the suction seed pipe and the seed blowing pipe penetrate through the left limiting head.

[0014] The present invention has the following beneficial effects: 1. The air suction and blowing structure of the digital composite seeder can adsorb seeds of different sizes in sequence by setting seed holes 1, 2, 3, and 4 on the seed drum. When small seeds need to be adsorbed, the feeding trough on the suction and blowing disc and the storage hopper can be adjusted to correspond to seed hole 1. When large seeds need to be adsorbed, the feeding trough on the suction and blowing disc and the storage hopper can be adjusted to correspond to seed hole 4. This enables the device to sow seeds of different sizes while having the advantage of quick adjustment of seed type sowing, thus solving the problem that existing sowing equipment needs to replace multiple seed suction cups, resulting in a lower seed sowing efficiency.

[0015] 2. The air suction and blowing structure of the digital composite seeder extracts air through the operation of a blower. The seed suction groove on the suction and blowing disc is connected to seed hole 1. At this time, the seeds can be adsorbed on the seed drum. When the seeds rotate to the seed discharging groove, the air extracted by the blower will be blown into the seed discharging groove. Subsequently, the air in the seed discharging groove will blow the seeds into the discharging hopper. The seeds in the discharging hopper will pass through the discharging pipe. At this time, the air blown by the blower will blow the seeds in the discharging pipe into the soil, enabling the blower to adsorb the seeds on the seed drum and blow them off, and at the same time, stably blowing the seeds into the soil.

[0016] 3. The air suction and blowing structure of the digital composite seeder sets the storage hopper and the discharging hopper at the rear end and the front end of the seed drum respectively, making the rear end of the seed drum the seed adsorption end and the front end of the seed drum the seed blowing-off end. The seed drum can complete the adsorption and shedding of seeds during rotation. The seeds are sown in a limited manner through the discharging hopper. Then, the blower is set below the seed drum, making the volume of this device more compact and occupying less floor space during storage. Brief Description of the Drawings

[0017] Figure 1 It is a front three-dimensional structure schematic diagram of the present invention; Figure 2 It is a rear three-dimensional structure schematic diagram of the present invention; Figure 3 It is a schematic diagram of the position of the feeding trough of the present invention; Figure 4 It is a bottom three-dimensional structure schematic diagram of the present invention; Figure 5 For the present invention Figure 4 The enlarged structure schematic diagram of part A in; Figure 6 It is a schematic diagram of the seed drum structure of the present invention; Figure 7 For the present invention Figure 6 The enlarged structure schematic diagram of part B in; Figure 8Schematic diagram of the position of the sliding rod of the present invention; Figure 9 Schematic diagram of the internal structure of the seed drum of the present invention; Figure 10 Schematic diagram of the pipeline connection structure of the suction and blowing disc of the present invention; Figure 11 Schematic diagram of the suction and blowing disc of the present invention; Figure 12 Schematic sectional view of the seed drum and the suction and blowing disc of the present invention.

[0018] In the figure: 1, main body support; 2, internal support; 3, right limit head; 4, left limit head; 5, seed drum; 6, large gear disc; 7, toothed belt; 8, small gear disc; 9, rotating rod; 10, drive motor; 11, storage hopper; 111, discharge hopper; 12, feeding trough; 13, discharge hopper; 14, discharge pipe; 15, rear support piece; 16, front support piece; 17, sliding rod; 18, connecting bracket; 19, main shaft; 20, suction and blowing disc; 21, seed suction groove; 22, seed discharge groove; 23, suction pipe connection hole; 24, suction air communication hole; 25, blowing pipe connection hole; 26, blowing air communication hole; 27, seed suction pipe; 28, pipeline connection head; 29, connection tank; 30, long pipe; 31, blower; 32, connecting pipeline; 33, horizontal pipe; 34, seed blowing pipe; 35, seed discharging pipe; 36, limit hole; 37, fixed long rod; 38, fixed bracket; 39, horizontal hole; 40, internal thread sleeve; 41, threaded rod; 42, adjusting servo motor; 43, mounting bracket; 51, seed hole one; 52, seed hole two; 53, seed hole three; 54, seed hole four. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1-12, an air suction and blowing structure of a digital composite seeder, including a main body bracket 1. An internal bracket 2 is fixedly assembled in the inner cavity of the main body bracket 1. A right limiting head 3 is fixedly assembled at the top of the internal bracket 2. A left limiting head 4 is arranged on the left side of the right limiting head 3. The outer walls of the right limiting head 3 and the left limiting head 4 are both movably sleeved with a seed drum 5. A number of seed holes one 51, seed holes two 52, seed holes three 53 and seed holes four 54 are opened on the outer wall of the seed drum 5. The seed holes one 51, seed holes two 52, seed holes three 53 and seed holes four 54 are arranged evenly from left to right in sequence. An air suction and blowing disc 20 is movably connected to the inner wall of the seed drum 5. An air suction groove 21 and a seed discharging groove 22 are respectively opened on the outer wall of the air suction and blowing disc 20. A suction pipe connection hole 23 is opened on the outer wall of the air suction and blowing disc 20. An air suction communication hole 24 is opened on the outer edge of the air suction groove 21. The air suction communication hole 24 is communicated with the suction pipe connection hole 23. A blowing pipe connection hole 25 is opened on the outer wall of the air suction and blowing disc 20. A blowing air communication hole 26 is opened on the outer edge of the seed discharging groove 22. The blowing air communication hole 26 is communicated with the blowing pipe connection hole 25. A main shaft 19 is fixedly assembled on the inner wall of the air suction and blowing disc 20. The main shaft 19 is slidably connected with the right limiting head 3 and the left limiting head 4.

[0021] In the above structure, the seed drum 5 is installed on the internal bracket 2 through the right limiting head 3 and the left limiting head 4. The seed drum 5 can rotate on the right limiting head 3 and the left limiting head 4. The seed holes one 51, seed holes two 52, seed holes three 53 and seed holes four 54 on the seed drum 5 can adsorb seeds of different sizes. When the seeds are located on the seed holes one 51, the seed drum 5 can drive the seeds to rotate when rotating, so that the seeds in the storage hopper 11 can be taken out. The outer wall of the air suction and blowing disc 20 is attached to the inner wall of the seed drum 5. The gas in the air suction groove 21, the air suction communication hole 24 and the suction pipe connection hole 23 is sucked out, so that the inner cavity of the air suction groove 21 is in a negative pressure state. Through the cooperation of the air suction groove 21 and the seed holes one 51, the seeds can be adsorbed on the outer wall of the seed drum 5. When the seeds rotate to the seed discharging groove 22, at this time, the gas enters the seed discharging groove 22 through the blowing pipe connection hole 25 and the blowing air communication hole 26. Then the gas blows the seeds on the outer wall of the seed drum 5 through the seed holes one 51, so that the seeds can be separated from the seed drum 5.

[0022] In a preferred embodiment: a storage hopper 11 is arranged on the outer wall of the seed drum 5. A feeding groove 12 is opened on the inner wall of the storage hopper 11. A discharging hopper 111 is fixedly assembled on the inner wall of the storage hopper 11. A discharging hopper 13 is fixedly assembled on the inner wall of the storage hopper 11. A discharging pipe 14 is fixedly assembled at the bottom of the discharging hopper 13.

[0023] In the above structure, through the setting of the feeding hopper 111, seeds are poured into the feeding hopper 111. Subsequently, the seeds in the feeding hopper 111 fall into the storage hopper 11. At this time, the seeds will enter the feeding chute 12 and come into contact with the seed roller 5. During use, one of the seed holes one 51, seed holes two 52, seed holes three 53, and seed holes four 54 corresponds to the feeding chute 12. Subsequently, the seed roller 5 rotates to adsorb the seeds and take them out from the storage hopper 11. After the seeds are separated from the seed roller 5, they fall into the discharge hopper 13. Subsequently, the seeds continue to fall downward and are discharged through the discharge pipe 14.

[0024] In a preferred embodiment: A large gear disk 6 is fixedly assembled on the outer wall of the seed roller 5. The outer edge of the large gear disk 6 is engaged with a toothed belt 7. The inner wall of the toothed belt 7 is engaged with a small gear disk 8. A rotating rod 9 is fixedly assembled on the inner wall of the small gear disk 8. The rotating rod 9 is fixedly sleeved on the power output shaft of the driving motor 10. The driving motor 10 is installed on the main body bracket 1.

[0025] In the above structure, the driving motor 10 rotates to drive the rotating rod 9 to rotate. When the rotating rod 9 rotates, it drives the small gear disk 8 to rotate. The rotation of the small gear disk 8 drives the toothed belt 7 to rotate. When the toothed belt 7 rotates, it drives the large gear disk 6 to rotate. When the large gear disk 6 rotates, it can drive the seed roller 5 to rotate, enabling the seed roller 5 to rotate.

[0026] In a preferred embodiment: A transverse hole 39 is opened in the inner wall of the main shaft 19. An internal thread sleeve 40 is fixedly assembled on the inner wall of the transverse hole 39. A threaded rod 41 is threadedly connected to the inner wall of the internal thread sleeve 40. The threaded rod 41 is fixedly sleeved on the power output shaft of the adjusting servo motor 42. The adjusting servo motor 42 is fixed on the main body bracket 1 through the mounting bracket 43.

[0027] In the above structure, the operation of the adjusting servo motor 42 drives the threaded rod 41 to rotate. When the threaded rod 41 rotates, it can drive the main shaft 19 and the suction and blowing disk 20 to move in the seed roller 5, enabling the seed suction grooves 21 on the suction and blowing disk 20 to correspond to the seed holes one 51, seed holes two 52, seed holes three 53, and seed holes four 54. Thus, when the device sows seeds of different sizes, it only needs to move the main shaft 19. When sowing small-particle seeds, the seed suction grooves 21 on the suction and blowing disk 20 are made to correspond to the seed holes one 51. When sowing large-particle seeds, the seed suction grooves 21 on the suction and blowing disk 20 are made to correspond to the seed holes four 54.

[0028] In a preferred embodiment: Connecting brackets 18 are fixedly assembled on the outer edges of the storage hopper 11 and the discharge hopper 13. The connecting brackets 18 are fixedly assembled on the main shaft 19. Fixed brackets 38 are fixedly assembled at both ends of the main shaft 19. The fixed brackets 38 are fixedly assembled on the main body bracket 1.

[0029] In the above structure, the storage hopper 11 and the discharge hopper 13 are connected by the connecting bracket 18. When the main shaft 19 moves, the connecting bracket 18, the storage hopper 11 and the discharge hopper 13 also move accordingly, so that the position of the feeding slot 12 on the storage hopper 11 and the seed suction slot 21 on the suction and blowing disc 20 corresponds to the seed suction holes, enabling the seeds to correspond to the corresponding seed suction holes. The fixing bracket 38 plays a role in supporting the main shaft 19.

[0030] In a preferred embodiment: a front support piece 16 is fixedly assembled at the bottom of the discharge hopper 13, and a rear support piece 15 is fixedly assembled at the bottom of the storage hopper 11. Slide rods 17 are slidably connected to the inner walls of the rear support piece 15 and the front support piece 16, and the slide rods 17 are fixedly assembled on the inner bracket 2.

[0031] In the above structure, through the arrangement of the rear support piece 15, the front support piece 16 and the slide rods 17, when the discharge hopper 13 and the storage hopper 11 move, at this time, the front support piece 16 on the discharge hopper 13 and the rear support piece 15 on the storage hopper 11 slide on the slide rods 17. The slide rods 17 can keep the front support piece 16 and the rear support piece 15 in a horizontal state during movement. The slide rods 17 can support the discharge hopper 13 and the storage hopper 11, so that the discharge hopper 13 and the storage hopper 11 will not drop when they contain seeds, and the discharge hopper 13 and the storage hopper 11 will not rub against the seed drum 5, and the gap between the discharge hopper 13, the storage hopper 11 and the seed drum 5 remains stable.

[0032] In a preferred embodiment: a plurality of limiting holes 36 are formed in the outer edge of the suction and blowing disc 20, and a fixed long rod 37 is slidably connected to the inner wall of the limiting hole 36. The fixed long rod 37 is fixedly assembled on the fixing bracket 38.

[0033] In the above structure, through the arrangement of the fixed long rod 37, when the main shaft 19 moves, it will drive the suction and blowing disc 20 to move. When the suction and blowing disc 20 moves, it will slide on the fixed long rod 37, improving the stability of the movement of the suction and blowing disc 20, so that the suction and blowing disc 20 can move stably in a horizontal state.

[0034] In a preferred embodiment: a pipe connector 28 is fixedly assembled on the inner wall of the straw connection hole 23, a seed suction pipe 27 is fixedly assembled on the inner wall of the pipe connector 28, one end of the seed suction pipe 27 away from the suction and blowing disc 20 is fixedly assembled with a connection tank 29, and the connection tank 29 is connected to the air inlet of the blower 31 through a long pipe 30.

[0035] In the above structure, when the blower 31 is operating, air will enter the blower 31 through the first seed hole 51, the seed suction groove 21, the air suction communication hole 24, the suction pipe connection hole 23, the seed suction pipe 27 and the connection tank 29, causing the seed suction groove 21 on the suction and blowing disc 20 to be in a negative pressure state. Since the suction and blowing disc 20 is in contact with the seed drum 5 and the seed suction groove 21 on the suction and blowing disc 20 is communicated with the first seed hole 51, the seeds in the storage hopper 11 can be adsorbed by the first seed hole 51.

[0036] In a preferred embodiment: A connecting pipe 32 is fixedly sleeved on the air outlet of the blower 31. One end of the connecting pipe 32 away from the blower 31 is fixedly equipped with a horizontal pipe 33. A seed discharging pipe 35 penetrates through the inner cavity of the horizontal pipe 33. One end of the seed discharging pipe 35 away from the horizontal pipe 33 is installed on the discharging pipe 14.

[0037] In the above structure, the gas is extracted by the blower 31 and discharged through the air outlet. At this time, the gas enters the connecting pipe 32, and then enters the horizontal pipe 33. The gas in the horizontal pipe 33 enters the seed discharging pipe 35. The seeds in the discharging pipe 14 will be blown downward by the gas in the seed discharging pipe 35, so that the seeds can be quickly blown into the ground and stably sown in the soil.

[0038] In a preferred embodiment: A seed blowing pipe 34 penetrates through the inner cavity of the horizontal pipe 33. One end of the seed blowing pipe 34 away from the horizontal pipe 33 is installed on the blowing pipe connection hole 25. Both the seed suction pipe 27 and the seed blowing pipe 34 penetrate through the left limiting head 4.

[0039] In the above structure, the gas in the horizontal pipe 33 will enter the blowing pipe connection hole 25 through the seed blowing pipe 34. Then the gas in the blowing pipe connection hole 25 will enter the seed discharging groove 22 through the air blowing communication hole 26, filling the seed discharging groove 22 with gas. The gas in the seed discharging groove 22 will blow the seeds through the first seed hole 51, causing the seeds to fall into the discharging hopper 13 and then be blown downward by the gas through the discharging pipe 14.

[0040] Working principle: When in use, seeds are poured into the feeding hopper 111. Subsequently, the seeds in the feeding hopper 111 will fall into the storage hopper 11, and gradually the feeding chute 12 will be filled with seeds. The blower 31 operates to extract air. At this time, the air enters the seed suction groove 21 through the first seed hole 51, then through the air suction connection hole 24, the suction pipe connection hole 23, the seed suction pipe 27, the connection tank 29 and the long pipe 30 into the blower 31. At this time, the seed suction groove 21 is in a negative pressure state, and the seed suction groove 21 is connected to the first seed hole 51. At this time, the first seed hole 51 on the side of the storage hopper 11 will adsorb the seeds. At this time, the driving motor 10 operates to drive the rotating rod 9 to rotate. When the rotating rod 9 rotates, it drives the small gear disk 8 to rotate. The rotation of the small gear disk 8 drives the toothed belt 7 to rotate. The rotation of the toothed belt 7 drives the large gear disk 6 to rotate. When the large gear disk 6 rotates, it drives the seed drum 5 to rotate. When the seed drum 5 rotates, it drives the seeds to rotate. When the seeds on the first seed hole 51 rotate to correspond to the seed discharging groove 22, at this time, the gas in the blower 31 will enter the horizontal pipe 33 through the connecting pipe 32. The gas in the horizontal pipe 33 will enter the seed blowing pipe 34 through the blowing pipe connection hole 25. The gas in the blowing pipe connection hole 25 will enter the seed discharging groove 22 through the blowing air connection hole 26. The seed discharging groove 22 is connected to the first seed hole 51, so that the gas in the seed discharging groove 22 will blow off the seeds on the first seed hole 51. At this time, the seeds will fall into the discharging hopper 13 and then into the discharging pipe 14. The gas in the horizontal pipe 33 will also enter the seed dropping pipe 35. The air outlet of the seed dropping pipe 35 is connected to the discharging pipe 14. At this time, the gas in the seed dropping pipe 35 will blow the seeds in the discharging pipe 14 downward, so that the seeds can be quickly and stably blown into the grooves on the soil. When sowing large-grained seeds, the servo motor 42 is adjusted to operate to drive the threaded rod 41 to rotate. When the threaded rod 41 rotates, it will pull the main shaft 19 and the suction and blowing disk 20 to move to the right. When the main shaft 19 moves, it will also drive the connecting bracket 18, the storage hopper 11 and the discharging hopper 13 to move synchronously, so that the feeding chute 12 corresponds to the seed adsorption hole. When the feeding chute 12 corresponds to the second seed hole 52, at this time, the seeds adsorbed by the second seed hole 52 are larger than the seeds adsorbed by the first seed hole 51. The seeds adsorbed by the third seed hole 53 are larger than those of the second seed hole 52. The seeds adsorbed by the fourth seed hole 54 are larger than those of the third seed hole 53, so that the device can sow a variety of crops.

[0041] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0042] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. The air suction and air blowing structure of a digital composite seeder, including a main body bracket (1), is characterized in that: An inner bracket (2) is fixedly assembled in the inner cavity of the main body bracket (1). A right limiting head (3) is fixedly assembled at the top of the inner bracket (2). A left limiting head (4) is arranged on the left side of the right limiting head (3). The outer walls of the right limiting head (3) and the left limiting head (4) are both movably sleeved with a seed roller (5). A plurality of seed holes one (51), seed holes two (52), seed holes three (53) and seed holes four (54) are formed in the outer wall of the seed roller (5). The seed holes one (51), seed holes two (52), seed holes three (53) and seed holes four (54) are evenly arranged from left to right in sequence. An air suction and blowing disc (20) is movably connected to the inner wall of the seed roller (5). An air suction groove (21) and a seed discharging groove (22) are respectively formed in the outer wall of the air suction and blowing disc (20). A straw connection hole (23) is formed in the outer wall of the air suction and blowing disc (20). An air suction communication hole (24) is formed in the outer edge of the air suction groove (21). The air suction communication hole (24) is communicated with the straw connection hole (23). A blowing pipe connection hole (25) is formed in the outer wall of the air suction and blowing disc (20). A blowing communication hole (26) is formed in the outer edge of the seed discharging groove (22). The blowing communication hole (26) is communicated with the blowing pipe connection hole (25). A main shaft (19) is fixedly assembled on the inner wall of the air suction and blowing disc (20). The main shaft (19) is slidably connected to the right limiting head (3) and the left limiting head (4).

2. The air suction and blowing structure of a digital composite seeder according to claim 1, characterized in that: A storage hopper (11) is arranged on the outer wall of the seed roller (5). A feeding groove (12) is formed in the inner wall of the storage hopper (11). A discharging hopper (111) is fixedly assembled on the inner wall of the storage hopper (11). A discharging hopper (13) is fixedly assembled on the inner wall of the storage hopper (11). A discharging pipe (14) is fixedly assembled at the bottom of the discharging hopper (13).

3. The air suction and blowing structure of a digital compound seeder according to claim 1, characterized in that: A large gear disc (6) is fixedly assembled on the outer wall of the seed roller (5). A toothed belt (7) is meshed with the outer edge of the large gear disc (6). A small gear disc (8) is meshed with the inner wall of the toothed belt (7). A rotating rod (9) is fixedly assembled on the inner wall of the small gear disc (8). The rotating rod (9) is fixedly sleeved on the power output shaft of a driving motor (10). The driving motor (10) is installed on the main body bracket (1).

4. The air suction and blowing structure of a digital composite seeder according to claim 1, characterized in that: A transverse hole (39) is formed in the inner wall of the main shaft (19). An internal thread sleeve (40) is fixedly assembled in the inner wall of the transverse hole (39). A threaded rod (41) is threadedly connected to the inner wall of the internal thread sleeve (40). The threaded rod (41) is fixedly sleeved on the power output shaft of an adjusting servo motor (42). The adjusting servo motor (42) is fixed on the main body bracket (1) through a mounting bracket (43).

5. The air suction and blowing structure of a digital composite seeder according to claim 2, characterized in that: Connection brackets (18) are fixedly assembled on the outer edges of the storage hopper (11) and the discharging hopper (13). The connection brackets (18) are fixedly assembled on the main shaft (19). Fixed brackets (38) are fixedly assembled at both ends of the main shaft (19). The fixed brackets (38) are fixedly assembled on the main body bracket (1).

6. The air suction and blowing structure of a digital composite seeder according to claim 5, characterized in that: A front support piece (16) is fixedly assembled at the bottom of the discharging hopper (13), a rear support piece (15) is fixedly assembled at the bottom of the storage hopper (11), sliding rods (17) are slidably connected to the inner walls of the rear support piece (15) and the front support piece (16), and the sliding rods (17) are fixedly assembled on the inner bracket (2).

7. The air suction and blowing structure of a digital composite seeder according to claim 1, characterized in that: A plurality of limiting holes (36) are formed in the outer edge of the suction and blowing disc (20), a fixed long rod (37) is slidably connected to the inner wall of the limiting hole (36), and the fixed long rod (37) is fixedly assembled on the fixed bracket (38).

8. The air suction and air blowing structure of a digital composite seeder according to claim 1, characterized in that: A pipeline connector (28) is fixedly assembled on the inner wall of the suction pipe connection hole (23), a seed suction pipeline (27) is fixedly assembled on the inner wall of the pipeline connector (28), a connection tank (29) is fixedly assembled at one end of the seed suction pipeline (27) away from the suction and blowing disc (20), and the connection tank (29) is connected to the air inlet of the blower (31) through a long pipe (30).

9. The air suction and blowing structure of a digital compound seeder according to claim 8, characterized in that: A connection pipeline (32) is fixedly sleeved on the air outlet of the blower (31), a cross pipe (33) is fixedly assembled at one end of the connection pipeline (32) away from the blower (31), a seed discharging pipeline (35) penetrates through the inner cavity of the cross pipe (33), and one end of the seed discharging pipeline (35) away from the cross pipe (33) is installed on the discharging pipe (14).

10. The air suction and blowing structure of a digital composite seeder according to claim 9, characterized in that: A seed blowing pipeline (34) penetrates through the inner cavity of the cross pipe (33), one end of the seed blowing pipeline (34) away from the cross pipe (33) is installed on the blowing pipe connection hole (25), and both the seed suction pipeline (27) and the seed blowing pipeline (34) penetrate through the left limiting head (4).

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