Drum-type precise quantity control seeding device and plug tray seeding machine

Abstract

The utility model provides a drum-type precise quantity control seeding device and a plug tray seeder. The drum-type precise quantity control seeding device is characterized in that a drum is arranged on a fixed frame, a plurality of seed suction holes are formed in the drum, a negative pressure cavity is formed in the drum, and seeds are adsorbed on the seed suction holes through the negative pressure cavity; a plurality of blowing nozzles are arranged on each blowing pipe, the blowing nozzles on each blowing pipe are distributed along the axial direction of the blowing pipe, and the blowing nozzles on two adjacent blowing pipes are arranged in a staggered manner, so that air is blown to the seed suction holes from different directions, and the number of seeds adsorbed on the seed suction holes is controlled; when the seed suction holes rotate to the lowest position of the roller, the movable part moves towards the inner wall of the roller under the action of positive pressure thrust to cover a row of seed suction holes in the roller and disconnect the negative pressure cavity from the seed suction holes, so that seeds adsorbed on the seed suction holes fall under the action of gravity, and seeding is completed. According to the drum-type accurate quantity control seeding device and the plug tray seeding machine, the technical problems of multi-seed adsorption and seed omission in the seeding process of a seeding mechanism in the related art are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plug seeding, in particular to a cylinder type precision controlled seeding device and plug seeding machine. BACKGROUND

[0002] Under the background of modern agricultural automation rapid development, plug seeding machine has become the core equipment indispensable for seedling production line. Its performance is not only directly related to the germination rate of seeds, but also deeply affects the uniform growth of plants and the final crop yield. Traditional cylinder type seed suction and dropping mechanism as the key component of plug seeding machine, through the suction hole on the surface of the cylinder under the action of negative pressure, the seeds are adsorbed and carried, and then released to the plug at the preset position, so as to realize efficient automatic seeding.

[0003] However, when the cylinder rotates to the position of releasing seeds, due to the factors such as unreasonable negative pressure environment or suction hole design, the phenomenon of one suction hole adsorbing multiple seeds often occurs, which not only causes seed waste, but also causes growth restriction due to nutrition and space competition when multiple seeds are planted in one hole of the plug at the same time, and even may cause mutual extrusion between plants, seriously affecting the healthy growth of crops; in addition, in the seed dropping process, because the negative pressure environment cannot be removed in time, part of the seeds may not fall off from the suction hole in time, causing seed omission.

[0004] Therefore, the prior art needs to be further developed. UTILITY MODEL CONTENT

[0005] The utility model aims at overcoming the above technical defects, and provides a cylinder type precision controlled seeding device and plug seeding machine, so as to solve the technical problems of seed multiple adsorption and seed omission in the seeding process of the seeding mechanism in the related art.

[0006] To achieve the above technical purpose, the utility model discloses the following technical scheme: provide a kind of drum precision control seeding device, comprising: fixed frame, fixed frame is provided with drum, the drive component of driving drum rotation and the seed tray located in the one side of drum, several suction holes are provided on the drum along the axis direction, the inside of drum is provided with negative pressure cavity, seed in seed tray is adsorbed on suction hole by negative pressure cavity;Quantity control component, quantity control component includes at least two blow pipes, a plurality of air blow nozzles are provided on each blow pipe, air blow nozzle on each blow pipe is distributed along blow pipe axial direction, and air blow nozzle on adjacent two blow pipes is set in staggered manner, so as to blow air from different directions to suction hole, control the number of seed adsorbed on suction hole, remove redundant seed;Partition component, partition component is located in negative pressure cavity, including movable piece with cavity, when suction hole rotates to the lowest of drum, movable piece moves to the inner wall of drum by positive pressure thrust, covers a row of suction holes on the drum, so as to disconnect the communication of negative pressure cavity and suction hole, release negative pressure environment, promote seed adsorbed on suction hole to drop by gravity, complete seeding.

[0007] Further, the blow pipe includes a first blow pipe and a second blow pipe, the first blow pipe is located between the seed tray and the second blow pipe, a plurality of mounting holes for mounting the air blow nozzles are provided on the first blow pipe and the second blow pipe, each pair of air blow nozzles on the first blow pipe blows air from both sides of the suction hole, and each air blow nozzle on the second blow pipe blows air from the front of the suction hole.

[0008] Further, the quantity control component further includes a first mounting plate and a second mounting plate, the two ends of the blow pipe are fixed on the first mounting plate and the second mounting plate, the first mounting plate is fixed on the fixed frame, a plurality of mounting grooves are provided on the first mounting plate and the second mounting plate along the rotation direction of the drum, and the blow pipe is detachably arranged in the mounting groove, so as to adjust the air blowing angle of the air blow nozzles on each blow pipe.

[0009] Further, the fixed frame is further provided with a fixed cylinder, the fixed cylinder is located in the inside of the drum and is arranged along the rotation axis of the drum, and the second mounting plate is sleeved on the end of the fixed cylinder; the fixed cylinder is provided with a through hole for the positive pressure pipeline to pass through, the partition component further includes a connecting block and an elastic pad, one end of the connecting block is connected with the fixed cylinder, the other end of the connecting block is connected with the elastic pad, the side of the elastic pad away from the connecting block is connected with the movable piece, the connecting block is provided with a first through hole, the positive pressure pipeline enters the negative pressure cavity through the through hole and is connected with the first through hole, so as to fill gas between the connecting block and the elastic pad, the elastic pad is deformed under the action of gas pressure, the movable piece is pushed out, and the movable piece is attached to the inner wall of the drum.

[0010] Further, a limiting block is arranged on the side of the elastic pad away from the connecting block, the limiting block, the elastic pad and the connecting block are sequentially connected through a first fixing piece, the limiting block is provided with a limiting groove, and the movable piece moves in the limiting groove.

[0011] Further, the connecting block is provided with a ventilation groove matched with the shape of the movable piece, when the gas is injected through the first through hole, the elastic pad deforms along the ventilation groove, and the movable piece is pushed to move in the limiting groove towards the direction of the drum.

[0012] Further, the movable piece is a ring-shaped closed nylon strip, which has elasticity and can be flexibly attached to the inner wall of the drum under the action of gas pressure; the middle part of the movable piece is provided with a fixing block, the fixing block, the elastic pad and the connecting block are connected in sequence through the second fastener, and the fixing block and the limiting block form an annular sliding groove, so that the movable piece moves in the annular sliding groove; the thickness of the fixing block is less than the thickness of the movable piece, so that the movable piece forms a cavity structure.

[0013] Further, the connecting block is further provided with a second through hole, the elastic pad is provided with a third through hole, and the fixing block is provided with a fourth through hole, the second through hole, the third through hole and the fourth through hole are communicated, the positive pressure pipeline blows gas into the second through hole, so that the gas enters the cavity of the movable piece through the third through hole and the fourth through hole, thereby blowing the seeds on the drum.

[0014] Further, the partition assembly has two, and the two partition assemblies are arranged adjacent to each other, when the suction hole passes through the first partition assembly and still has seeds, as the drum continues to rotate, the suction hole passes through the second partition assembly, and the negative pressure environment is released again, so that the residual seeds fall off.

[0015] A plug tray seeder comprises a transmission support for transmitting plug trays, and a drum-type precision controlled seeding device as described above, and the fixing frame is fixed on the transmission support.

[0016] Advantages:

[0017] 1. By arranging a plurality of blow pipes in the controlled quantity assembly, the seeds adsorbed on the suction holes can be accurately controlled in quantity from different directions, and the excessive seeds are removed, thereby effectively avoiding the phenomenon of excessive seed adsorption in the traditional seeding process, and the precision of seeding is improved.

[0018] 2. The design of the partition assembly in the negative pressure cavity enables the movable piece to be attached to the inner wall of the drum by positive pressure thrust, the communication between the suction hole and the negative pressure cavity is disconnected, the negative pressure environment is released, and the seeds adsorbed on the suction hole are caused to fall off, thereby effectively avoiding the problem of seed omission and ensuring that the seeds in each suction hole are released in time.

[0019] 3. The blow pipe of the controlled quantity assembly can be disassembled and adjusted through the mounting groove, the blowing angle of the blow nozzle is adjusted, a flexible setting space is provided, the seeding demand of different types of seeds can be met, and the adaptability and universality of the equipment are improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1is a structure schematic diagram of the first visual angle of the drum type precision controlled seeding device adopted by the embodiment of the utility model;

[0021] Figure 2 is a structure schematic diagram of the second visual angle of the drum type precision controlled seeding device adopted by the embodiment of the utility model;

[0022] Figure 3 is a drum internal structure schematic diagram of the drum type precision controlled seeding device adopted by the embodiment of the utility model;

[0023] Figure 4 is a structure schematic diagram of the third visual angle of the drum type precision controlled seeding device adopted by the embodiment of the utility model;

[0024] Figure 5 is an explosion view of the partition assembly of the drum type precision controlled seeding device adopted by the embodiment of the utility model;

[0025] Figure 6 is a partial structure schematic diagram of the plug tray seeder adopted by the embodiment of the utility model.

[0026] Among them, the above-mentioned drawing includes the following figure marks:

[0027] 1, fixed frame;11, drum;12, drive assembly;121, motor;122, gear belt group;13, seed tray;14, seed suction hole;15, negative pressure cavity;16, fixed cylinder;161, perforation;17, first tray;2, controlled quantity assembly;21, first blowpipe;22, second blowpipe;23, mounting hole;241, first mounting plate;242, second mounting plate;243, mounting groove;3, partition assembly;31, movable piece;32, connecting block;321, first through hole;322, air vent groove;323, second through hole;33, elastic pad;331, third through hole;34, limiting block;341, limiting groove;351, first fixing piece;352, second fastener;353, third fastener;36, fixed block;361, fourth through hole;4, transmission support;5, supporting wheel;6, vibrator;71, scraper;72, second tray;73, hanging rod. DETAILED DESCRIPTION

[0028] In order to make the personnel in the technical field better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the present application.

[0029] According to the embodiment of the utility model, a kind of precision control seeding device of drum type is provided, please refer to Figures 1 to 6The device comprises a fixed frame 1, a roller 11 arranged on the fixed frame 1, a driving assembly 12 for driving the roller 11 to rotate, and a seed tray 13 arranged on one side of the roller 11, a plurality of seed suction holes 14 are arranged on the roller 11 along the axial direction, a negative pressure cavity 15 is arranged in the roller 11, and the seeds in the seed tray 13 are adsorbed on the seed suction holes 14 through the negative pressure cavity 15; a quantity control assembly 2, the quantity control assembly 2 comprises at least two blow pipes, a plurality of air blow nozzles are arranged on each blow pipe, the air blow nozzles on each blow pipe are distributed along the axial direction of the blow pipe, and the air blow nozzles on adjacent two blow pipes are arranged in a staggered mode, so that air is blown to the seed suction holes 14 from different directions, the number of seeds adsorbed on the seed suction holes 14 is controlled, and the excessive seeds are removed; and a partition assembly 3, the partition assembly 3 is arranged in the negative pressure cavity 15 and comprises a movable piece 31 with a cavity, when the seed suction hole 14 rotates to the lowest position of the roller 11, the movable piece 31 is moved to the inner wall of the roller 11 under the action of the positive pressure thrust, covers the seed suction holes 14 on the roller 11, and disconnects the communication between the negative pressure cavity 15 and the seed suction holes 14, so that the negative pressure environment is released, the seeds adsorbed on the seed suction holes 14 are caused to fall under the action of gravity, and the seeding is completed. In the process of rotating the roller 11, the seeds are adsorbed on the seed suction holes 14 through negative pressure. When the number of seeds adsorbed on the seed suction holes 14 is too large, the blow pipes in the quantity control assembly 2 can blow air to the seed suction holes 14. The quantity control assembly 2 comprises a plurality of blow pipes, a plurality of air blow nozzles are arranged on each blow pipe, the air blow nozzles are distributed along the axial direction of the blow pipe, and the air blow nozzles on adjacent two blow pipes are arranged in a staggered mode. In this way, the air blow nozzles can blow air to the seed suction holes 14 from multiple directions, so that the number of seeds adsorbed on the seed suction holes 14 is controlled. If a plurality of seeds are adsorbed on a certain seed suction hole 14, the excessive seeds can be removed through air blowing, so that only one seed is adsorbed on each seed suction hole. When the roller 11 continues to rotate to the lowest position, the partition assembly 3 plays a key role. The movable piece 31 in the partition assembly 3 will move to the inner wall of the roller 11 under the action of the positive pressure thrust, covers the corresponding seed suction holes 14 on the roller 11, and disconnects the communication between the negative pressure cavity 15 and the seed suction holes 14, so that the negative pressure environment is released. After the negative pressure environment is released, the seeds adsorbed on the seed suction holes 14 will fall under the action of gravity, and the seeding is successfully completed. This operation ensures that the seeds can timely fall off from the seed suction holes 14 at the appropriate time, and avoids the situation that the seeds stay in the seed suction holes for too long or are missed. The design of the quantity control assembly 2 can accurately control the number of seeds on each seed suction hole 14, and avoids the problem that too many seeds are adsorbed in the traditional technology. Since the air blowing assembly can remove the excessive seeds, the waste of seeds is reduced. Compared with the traditional seeding method, the device can control the number of seeds in the process of seeding, and avoids the situation that too many seeds are wasted due to the adsorption of a plurality of seeds. The movable piece 31 of the partition assembly 3 covers the seed suction holes through the positive pressure thrust, disconnects the negative pressure environment, and effectively causes the seeds adsorbed on the seed suction holes to timely fall off. In this way, the seeds can be released at the correct position, the phenomenon of missing seeds is avoided, and it is ensured that each seed hole position can be seeded with seeds.The drum type precision controlled seeding device of the embodiment solves the technical problems of seed multi-particle adsorption and seed omission in the seeding process of the seeding mechanism in the related art.

[0030] Referring to Figure 1 The drum type precision controlled seeding device of the embodiment, the driving assembly 12 includes a motor 121 and a gear belt set 122, the motor 121 drives the driving wheel to rotate, and drives the driven wheel on the belt to rotate, so as to drive the drum 11 to rotate.

[0031] Referring to Figure 1 The drum type precision controlled seeding device of the embodiment, the blowing pipe includes a first blowing pipe 21 and a second blowing pipe 22, the first blowing pipe 21 is located between the seed disc 13 and the second blowing pipe 22, a plurality of mounting holes 23 for mounting the air blowers are arranged on the first blowing pipe 21 and the second blowing pipe 22, each pair of air blowers on the first blowing pipe 21 blows air from both sides of the seed suction hole 14, and each air blower on the second blowing pipe 22 blows air from the front of the seed suction hole 14. Each pair of air blowers on the first blowing pipe 21 blows air from both sides of the seed suction hole 14, and each air blower on the second blowing pipe 22 blows air from the front of the seed suction hole 14. Through this multi-directional blowing mode, the excess seeds can be effectively removed, and it is ensured that there is only one seed on each seed suction hole, so as to avoid waste caused by excessive seed adsorption.

[0032] Referring to Figure 2 The drum type precision controlled seeding device of the embodiment, the controlled quantity assembly 2 further includes a first mounting plate 241 and a second mounting plate 242, both ends of the blowing pipe are fixed on the first mounting plate 241 and the second mounting plate 242, the first mounting plate 241 is fixed on the fixed frame 1, a plurality of mounting grooves 243 are arranged on the first mounting plate 241 and the second mounting plate 242 along the rotation direction of the drum 11, and the blowing pipe is detachably arranged in the mounting groove 243, so as to adjust the blowing angle of the air blower on each blowing pipe. Through the arrangement of the plurality of mounting grooves 243, the blowing pipe can be freely detached and adjusted in the mounting groove 243 according to the needs, so as to flexibly adjust the blowing angle of the air blower on each blowing pipe. This adjustability enables the seeding device to accurately control the direction and intensity of the air flow according to different seed types, seeding requirements and specific needs of crops, so as to improve the precision and effect of seeding.

[0033] Referring to Figure 1 and Figure 3 In the embodiment, the vibrator 6 is arranged on the seed disc 13, and the vibrator 6 prevents the seed from accumulating, so as to facilitate the negative pressure adsorption on the drum 11. The first receiving disc 17 is arranged on the side of the drum 11 away from the seed disc 13, and part of the excess seeds will fall into the first receiving disc 17 through the blowing of the air blowers on the first blowing pipe 21 and the second blowing pipe 22 in the rolling process of the drum 11.

[0034] Referring toFigure 1 In the embodiment, the rotatable supporting wheel 5 is arranged on the first connecting disc 17 and the first mounting plate 241 to support the roller 11, and the supporting wheel 5 rotates with the roller 11.

[0035] Referring to Figure 3 and Figure 4 In the embodiment, the fixed cylinder 16 is arranged on the fixed frame 1 and located in the roller 11, and the second mounting plate 242 is arranged on the end of the fixed cylinder 16; the perforation 161 is arranged on the fixed cylinder 16 for the positive pressure pipeline to pass through; the disconnecting assembly 3 further comprises the connecting block 32 and the elastic pad 33, one end of the connecting block 32 is connected with the fixed cylinder 16, the other end of the connecting block 32 is connected with the elastic pad 33, the side of the elastic pad 33 away from the connecting block 32 is connected with the movable piece 31, the first through hole 321 is arranged on the connecting block 32, the positive pressure pipeline passes through the perforation 161 to enter the negative pressure cavity 15 and is connected with the first through hole 321, so that the gas is filled between the connecting block 32 and the elastic pad 33, the elastic pad 33 is deformed under the action of the gas pressure, the movable piece 31 is pushed out to be attached to the inner wall of the roller 11. By arranging the positive pressure pipeline connected with the perforation 161, the positive pressure gas enters the negative pressure cavity 15 and is transmitted to the connecting block 32 and the elastic pad 33 through the first through hole 321, so that the elastic pad 33 is deformed to push the movable piece 31 to the inner wall of the roller 11, thereby effectively controlling and releasing the negative pressure environment. This process helps to quickly release the connection between the seed suction hole 14 and the negative pressure cavity 15 when the roller rotates to the appropriate position, ensures that the seeds can be smoothly dropped, and improves the accuracy and efficiency of the seeding.

[0036] Referring to Figure 3 and Figure 5 In the embodiment, the limiting block 34 is arranged on the side of the elastic pad 33 away from the connecting block 32, the limiting block 34, the elastic pad 33 and the connecting block 32 are sequentially connected through the first fixing piece 351, the limiting groove 341 is arranged on the limiting block 34, and the movable piece 31 moves in the limiting groove 341. By arranging the limiting block 34 and the limiting groove 341, the movement range of the movable piece 31 can be effectively limited to ensure accurate movement in the specified area. This design prevents the movable piece 31 from affecting the seed control during the seeding process due to excessive movement or deviation from the predetermined trajectory, and ensures that the movable piece 31 can correctly and reliably attach to the inner wall of the roller each time the negative pressure is released.

[0037] Referring to Figure 5The connecting block 32 is provided with a ventilation groove 322 matched with the shape of the movable piece 31. When the gas is injected through the first through hole 321, the elastic pad 33 deforms along the ventilation groove 322, and the movable piece 31 is pushed to move in the direction of the drum 11 in the limiting groove 341. The first through hole 321 is communicated with the ventilation groove 322. The ventilation groove 322 is matched with the shape of the movable piece 31, which can effectively guide the direction of the gas flow, so that the elastic pad 33 can deform in an orderly manner under the action of the gas. In this way, the elastic pad 33 can more uniformly push the movable piece 31, and ensure that the movable piece 31 moves in the direction of the drum 11 in the limiting groove 341.

[0038] Referring to Figure 5 The movable piece 31 is a ring-shaped closed nylon strip. The nylon strip has elasticity and can be flexibly attached to the inner wall of the drum 11 under the action of gas pressure. The middle part of the movable piece 31 is provided with a fixed block 36. The fixed block 36, the elastic pad 33 and the connecting block 32 are sequentially connected through the second fastener 352. An annular sliding groove is formed between the fixed block 36 and the limiting block 34, so that the movable piece 31 moves in the annular sliding groove. The thickness of the fixed block 36 is less than the thickness of the movable piece 31, so that the movable piece 31 forms a cavity structure. The movable piece 31 adopts a ring-shaped closed wear-resistant nylon strip design. The wear-resistant nylon strip has good elasticity and can be flexibly attached to the inner wall of the drum 11 under the action of gas pressure. The annular sliding groove formed between the fixed block 36 and the limiting block 34 makes the movable piece 31 move more stably in the sliding groove, avoiding unnecessary shaking or deviation.

[0039] Referring to Figure 5 The connecting block 32 is further provided with a second through hole 323. The elastic pad 33 is provided with a third through hole 331. The fixed block 36 is provided with a fourth through hole 361. The second through hole 323, the third through hole 331 and the fourth through hole 361 are communicated. The positive pressure pipeline blows gas into the second through hole 323, so that the gas enters the cavity of the movable piece 31 through the third through hole 331 and the fourth through hole 361, thereby blowing off the seeds on the drum 11. The second through hole 323 on the connecting block 32 is communicated with the third through hole 331 on the elastic pad 33 and the fourth through hole 361 on the fixed block 36. Since the wear-resistant nylon strip is attached to the inner wall of the drum 11, there is no negative pressure at this time. The gas in the positive pressure pipeline enters the cavity of the movable piece 31 through the second through hole 323, the third through hole 331 and the fourth through hole 361 in turn, and is directly blown to the drum 11, so as to increase the gas pressure in the cavity and make the seeds on the seed suction hole 14 fall off, thereby completing the release of the seeds.

[0040] Referring to Figure 3 and Figure 5In the embodiment, the elastic pad 33 is a silica gel plate with a thickness of 1.5 mm, the third fastener 353 is connected with the connecting block 32 through the fixing cylinder 16 to fix the partition assembly 3 on the fixing cylinder 16, the first fixing member 351 is sequentially connected with the limiting block 34, the silica gel plate and the connecting block 32 to fix and connect them, and the second fastener 352 is sequentially connected with the fixing block 36, the silica gel plate and the connecting block 32 to fix and connect them.

[0041] Referring to Figure 3 The roller type precision quantity control seeding device in the embodiment has two partition assemblies 3, and the two partition assemblies 3 are arranged adjacently. When the suction hole 14 passes through the first partition assembly 3 and still has seeds, with the continuous rotation of the roller 11, the suction hole 14 passes through the second partition assembly 3, and the negative pressure environment is released again, so that the residual seeds are dropped. By arranging two adjacent partition assemblies 3, the seeds in the suction hole 14 can be effectively and smoothly dropped. When the suction hole 14 passes through the first partition assembly 3 and still has residual seeds, with the continuous rotation of the roller 11, the suction hole 14 passes through the second partition assembly 3, and the negative pressure environment is released again, so that the residual seeds are completely dropped, and the situation of missing seeds is avoided.

[0042] Referring to Figure 2 and Figure 4 In the embodiment, the bottom of the roller 11 is further provided with a scraper 71 to assist the partition assembly 3 in the roller 11 to ensure that the seeds are dropped into the plug tray. A second plug tray 72 is arranged below the seed tray 13. If the scraper 71 and the first partition assembly 3 do not completely drop the seeds, the second partition assembly 3 is used to release the seeds into the second plug tray 72 before the roller 11 rotates to the seed tray 13, so as to prevent the same suction hole 14 from again absorbing a large number of seeds when the roller 11 rotates to the seed tray 13. The second plug tray 72 is connected by a hanging rod 73, and the hanging rod 73 is fixed on the fixing frame 1.

[0043] Referring to Figure 6 The plug seeding machine in the embodiment comprises a transmission support 4 for transmitting the plug tray and the roller type precision quantity control seeding device as described above, and the fixing frame 1 is fixed on the transmission support 4. By combining the roller type precision quantity control seeding device with the transmission support 4, the seeding process is automated, manual operation is reduced, and the efficiency and precision of seeding are improved. The fixing frame 1 is fixed on the transmission support 4, so as to ensure the stability and synchronization of the equipment and avoid errors caused by unstable equipment.

[0044] It should be noted that the terms "first", "second" and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a sequential or chronological order. It is to be understood that the use of these terms is arbitrary apart from their definition in the specification or by understanding that the use of these terms in the present description is solely for the purpose of nomenclature and does not in any way limit the scope of the application. Furthermore, the terms "comprise", "to comprise", "comprising", "include", "to include", "including" and the like are used herein to whether directly or indirectly comply with a number of elements, including a number of steps, operations, elements, units and / or the like. Not all the components or steps are mandatory and some can be substituted for other, equivalent components or steps, the inverse being possible.

[0045] Optionally, the specific examples in the embodiments can refer to the examples described in the above embodiments, and the embodiments will not be repeated here.

[0046] The serial numbers of the above embodiments of the present application are only for description, not representing the advantages and disadvantages of the embodiments.

[0047] In the above embodiments of the present application, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0048] The above only describes the preferred embodiments of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which should be considered as the protection scope of the present application.

Claims

1. A drum-type precision quantity control seeding device, characterized in that, include: A fixed frame (1) is provided with a roller (11), a drive assembly (12) for driving the roller (11) to rotate, and a seed tray (13) located on one side of the roller (11). The roller (11) is provided with a plurality of seed suction holes (14) along the axial direction. The roller (11) is provided with a negative pressure chamber (15) inside, through which the seeds in the seed tray (13) are adsorbed onto the seed suction holes (14). The quantity control component (2) includes at least two blowpipes, each blowpipe is provided with multiple air nozzles, the air nozzles on each blowpipe are distributed along the blowpipe axis, and the air nozzles on two adjacent blowpipes are staggered so as to blow air into the seed suction hole (14) from different directions to control the number of seeds adsorbed on the seed suction hole (14) and remove excess seeds; The partition assembly (3) is located inside the negative pressure chamber (15) and includes a movable part (31) with a cavity. When the seed suction hole (14) rotates to the lowest point of the roller (11), the movable part (31) is pushed by positive pressure to move towards the inner wall of the roller (11), covering a row of seed suction holes (14) on the roller (11), thereby disconnecting the connection between the negative pressure chamber (15) and the seed suction hole (14), releasing the negative pressure environment, and causing the seeds adsorbed on the seed suction hole (14) to fall off under the action of gravity, thus completing the sowing.

2. The drum-type precision quantity control seeding device according to claim 1, characterized in that, The blowpipe includes a first blowpipe (21) and a second blowpipe (22). The first blowpipe (21) is located between the seed tray (13) and the second blowpipe (22). Both the first blowpipe (21) and the second blowpipe (22) are provided with a plurality of mounting holes (23) for mounting air nozzles. Each pair of air nozzles on the first blowpipe (21) blows air from both sides of the seed suction hole (14), and each air nozzle on the second blowpipe (22) blows air from the seed suction hole (14) in the forward direction.

3. The drum-type precision quantity control seeding device according to claim 1, characterized in that, The volume control component (2) further includes a first mounting plate (241) and a second mounting plate (242). The two ends of the blowpipe are respectively fixed on the first mounting plate (241) and the second mounting plate (242). The first mounting plate (241) is fixed on the fixing frame (1). Multiple mounting grooves (243) are provided at intervals on the first mounting plate (241) and the second mounting plate (242) along the rotation direction of the roller (11). The blowpipe is detachably installed in the mounting groove (243) so as to adjust the blowing angle of the blowing nozzle on each blowpipe.

4. The drum-type precision quantity control seeding device according to claim 3, characterized in that, The fixing frame (1) is also provided with a fixing cylinder (16), which is located inside the roller (11) and is arranged along the rotation axis of the roller (11). The second mounting plate (242) is sleeved on the end of the fixing cylinder (16). The fixed cylinder (16) is provided with a perforation (161) for the positive pressure pipeline to pass through. The partition assembly (3) also includes a connecting block (32) and an elastic pad (33). One end of the connecting block (32) is connected to the fixed cylinder (16), and the other end of the connecting block (32) is connected to the elastic pad (33). The side of the elastic pad (33) away from the connecting block (32) is connected to the movable part (31). The connecting block (32) is provided with a first through hole (321). The positive pressure pipeline enters the negative pressure chamber (15) through the perforation (161) and is connected to the first through hole (321), thereby filling gas between the connecting block (32) and the elastic pad (33). The elastic pad (33) deforms under the action of air pressure, pushing out the movable part (31) so that the movable part (31) fits against the inner wall of the roller (11).

5. The drum-type precision quantity control seeding device according to claim 4, characterized in that, A limiting block (34) is provided on the side of the elastic pad (33) away from the connecting block (32). The limiting block (34), the elastic pad (33) and the connecting block (32) are connected in sequence by the first fixing member (351). A limiting groove (341) is provided on the limiting block (34), and the movable member (31) moves in the limiting groove (341).

6. The drum-type precision quantity control seeding device according to claim 5, characterized in that, The connecting block (32) is provided with a ventilation groove (322) that matches the shape of the movable part (31). When gas is injected through the first through hole (321), the elastic pad (33) deforms along the ventilation groove (322) and pushes the movable part (31) to move toward the roller (11) in the limiting groove (341).

7. The drum-type precision quantity control seeding device according to claim 6, characterized in that, The movable part (31) is a closed annular nylon strip. The nylon strip is elastic and can flexibly conform to the inner wall of the roller (11) under air pressure. A fixing block (36) is provided in the middle of the movable part (31). The fixing block (36), the elastic pad (33) and the connecting block (32) are connected in sequence by the second fastener (352). An annular groove is formed between the fixing block (36) and the limiting block (34) so ​​that the movable part (31) can move in the annular groove. The thickness of the fixed block (36) is less than the thickness of the movable part (31), so that the movable part (31) forms a cavity structure.

8. The drum-type precision quantity control seeding device according to claim 7, characterized in that, The connecting block (32) is also provided with a second through hole (323), the elastic pad (33) is provided with a third through hole (331), and the fixed block (36) is provided with a fourth through hole (361). The second through hole (323), the third through hole (331) and the fourth through hole (361) are connected. The positive pressure pipeline blows air into the second through hole (323), so that the gas passes through the third through hole (331) and the fourth through hole (361) and enters the cavity of the movable part (31), thereby blowing away the seeds on the roller (11).

9. The drum-type precision quantity control seeding device according to claim 1, characterized in that, There are two partition components (3), which are arranged adjacent to each other. When the seed suction hole (14) still has seeds after passing through the first partition component (3), as the roller (11) continues to rotate, when the seed suction hole (14) passes through the second partition component (3), the negative pressure environment is released again, causing the remaining seeds to fall off.

10. A tray seeder, comprising a transport support (4) for transporting trays, characterized in that, It also includes a roller-type precision quantity control seeding device as described in any one of claims 1-9, wherein the fixing frame (1) is fixed on the transmission support (4).

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