Seed production robot for farmland seed production

Abstract

The invention relates to the technical field of agricultural seed production, in particular to a seed production robot for farmland seed production, which comprises two bases, an outer rotating sleeve and an inner rotating sleeve, the outer rotating sleeve is rotatably connected to the bases, the outer rotating sleeve and the inner rotating sleeve are coaxially arranged and rotate in opposite directions, and an annular seed production cavity is defined between the inner wall and the outer wall of the outer rotating sleeve and the inner rotating sleeve; multiple sets of inner brushes are arranged on the outer wall of the inner rotating sleeve at equal intervals in the circumferential direction. The outer rotating sleeve and the inner rotating sleeve adopt a coaxial reverse rotation design to drive the inner brush and the outer brush which are distributed in a staggered manner to synchronously and reversely move, so that the seed stirring frequency and the movement track complexity are improved through all-directional stirring to increase the contact area of seeds and a medicament and improve the mixing efficiency, and the medicament atomization volatilization is reduced in a brush medicament permeation manner to improve the utilization rate; moreover, by means of gentle rubbing of the brushes, uniform coating of the pesticide is achieved, mechanical damage to the seeds is avoided, meanwhile, coating blind areas are eliminated through staggered arrangement of the brushes, and the uniformity and quality consistency of seed coating are comprehensively guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of agricultural seed production technology, specifically, it relates to a seed production robot for use in farmland seed production. Background Technology

[0002] Seed production in farmland is a crucial link in ensuring high-quality and high-yield crops. Its specific process usually includes steps such as variety selection, parent line propagation, cross-pollination, seed harvesting, cleaning and grading, coating treatment, and packaging and storage. Among these steps, variety selection and parent line propagation lay the genetic foundation of seeds, cross-pollination achieves the combination of excellent traits, and after harvesting, the seeds need to be cleaned to remove impurities and graded to select seeds of uniform weight. Then, they enter the coating treatment stage, where a protective layer of chemical agent is applied to the surface of the seeds. Finally, after packaging, the seeds are stored in warehouses to provide qualified seed sources for subsequent sowing.

[0003] Currently, wheat seed coating treatment mainly relies on specialized seed production equipment, including drum coating, spray coating and stirring coating. Among them, drum coating equipment has become the most widely used type in agricultural production due to its advantages of simple operation and large processing capacity. However, existing drum coating equipment only uses the unidirectional rotation of the drum itself to drive the seeds and the agent to move in a circular motion within the cavity. Unidirectional rotation leads to insufficient seed agitation and failure to achieve all-round dispersion. This results in a fixed contact angle between the seeds and the agent, and some seed surfaces never come into contact with the agent. When the rotation speed is too low, the seeds are prone to sticking together, and the coating agent will accumulate on the surface of the clumped seeds, while the seeds inside the clumped seeds may be missed. If the rotation speed is too high, although it can alleviate some accumulation, the centrifugal force will make it difficult for the agent to adhere, causing the coating film to peel off. This increases the friction between seeds or between seeds and the inner wall of the drum, causing damage to the seed coat. Summary of the Invention

[0004] This invention provides a seed production robot for farmland seed production. The outer and inner rotating sleeves are designed to rotate in opposite directions on the same axis, driving the staggered inner and outer brushes to move synchronously in opposite directions. This not only increases the seed turning frequency and the complexity of the movement trajectory by stirring in all directions, thereby increasing the contact area between the seeds and the agent and improving the mixing efficiency, but also reduces the atomization and volatilization of the agent by penetrating the agent through the brushes, thus improving the utilization rate. Furthermore, the gentle kneading of the brushes achieves uniform coating of the agent and avoids mechanical damage to the seeds. At the same time, the staggered layout of the brushes eliminates coating blind spots, comprehensively ensuring the uniformity and quality consistency of the seed coating, thereby solving the problems mentioned in the background art. To achieve the above objectives, a seed production robot for farmland seed production includes two bases, and further includes an outer rotating sleeve and an inner rotating sleeve. The outer rotating sleeve is rotatably connected to the bases, and the outer and inner rotating sleeves are coaxially arranged and rotate in opposite directions. The inner and outer walls of the two sleeves enclose an annular seed production cavity. Multiple sets of inner brushes are equidistantly arranged on the outer wall of the inner rotating sleeve, each set containing multiple brush bodies equidistantly arranged along the axial direction of the inner rotating sleeve. The inner brushes have a hollow interior, and the outer wall has a discharge hole communicating with the internal cavity. Multiple sets of inner brushes are equidistantly arranged on the inner wall of the outer rotating sleeve. The outer brush, each set of outer brushes includes multiple brush bodies arranged equidistantly along the axial direction of the outer rotating sleeve. The outer brushes and inner brushes are staggered in the annular seed production cavity. The agent delivery unit is located inside the inner rotating sleeve, and its output end is connected to the internal cavity of the inner brush. It is used to deliver the agent into the cavity, and then allow the agent to be discharged into the annular seed production cavity through the discharge hole. The feeding port is opened on the outer rotating sleeve and connected to the annular seed production cavity. It is used to put the wheat seeds to be coated into the annular seed production cavity. The cover plate is detachably connected to the outer rotating sleeve and is used to close the feeding port.

[0005] Based on this, a drive shaft is fixedly connected to one end of the outer sleeve, and a motor is fixedly installed on the side wall of the base. The drive shaft is fixedly connected to the output end of the motor. In the above technical solution, the outer rotating sleeve is directly driven by a motor, which simplifies the power transmission path, reduces the number of failure points, improves transmission efficiency, and also reduces the difficulty of equipment maintenance.

[0006] Secondly, a toothed ring body is provided at one end of the outer rotating sleeve, and two rotating shafts are rotatably connected to the side wall of the base. Gear 1 is fixedly installed on both rotating shafts, and gear 2 is fixedly installed at one end of the inner rotating sleeve. Gear 1 meshes with the toothed ring body and gear 2 respectively. In the above technical solution, through the transmission cooperation of the gear ring body, gear one and gear two, the inner rotating sleeve can be driven to rotate synchronously when the outer rotating sleeve rotates, without the need to add a separate drive motor for the inner rotating sleeve, thus achieving the effect of cost reduction and energy saving.

[0007] Preferably, the toothed ring body is a half-toothed ring or a full-toothed ring.

[0008] Furthermore, the agent delivery unit includes a storage chamber pre-installed within the inner rotating sleeve, which stores the agent used for seed coating. A piston disc is slidably connected within the storage chamber. A conveying chamber is formed between the inner and outer walls of the inner rotating sleeve and is connected to the internal cavity of the inner brush. A conveying hole is formed on the inner rotating sleeve, with one end connected to the storage chamber and the other end connected to the conveying chamber. Guide grooves are symmetrically formed on the wall of the storage chamber, and guide blocks are slidably connected within the guide grooves. The guide blocks are integrally formed with the piston disc. The unit also includes a support base located on one side of the base, with a screw threadedly connected to the support base. One end of the screw, which passes through the inner rotating sleeve, is fixedly connected to the piston disc. In the above technical solution, during seed production, the inner rotating sleeve drives the storage chamber to rotate, and the piston disc rotates synchronously with the guide block and guide groove, which in turn drives the lead screw to rotate. The lead screw and the support seat are threaded together to generate axial thrust, which drives the piston disc to slide at a constant speed, thereby realizing the uniform delivery of the agent.

[0009] Furthermore, each set of outer brushes has a hollow interior, and the outer wall has air jet holes that communicate with the internal cavity. Multiple air supply chambers are formed between the inner and outer walls of the outer rotating sleeve, and the air supply chambers are connected to the internal cavity of the outer brush. A hollow cavity is formed inside the drive shaft. A branch pipe is provided on the outer rotating sleeve. One end of the branch pipe is connected to the air supply chamber, and the other end is connected to the hollow cavity. It also includes an air supply pipe, which is connected to the hollow cavity through a rotary joint. The rotary joint is set on the drive shaft. In the above technical solution, during seed production, compressed air enters the outer brush through the air supply pipe and rotary joint and is ejected from the jet hole, which pushes the seeds in the annular seed production chamber to rotate irregularly, thereby improving the uniformity of coating.

[0010] Furthermore, a solenoid valve is installed on the branch pipe. When the branch pipe rotates with the outer rotating sleeve to the lowest point of the outer rotating sleeve, the air intake of the branch pipe is increased by regulating the solenoid valve. The airflow is introduced into the internal cavity of the corresponding set of outer brushes through the branch pipe and the air delivery chamber, thereby increasing the air intake of the cavity and driving the outer brushes to expand and harden.

[0011] In another technical solution, the outer sleeve is provided with a pressure relief pipe, which is connected to the annular seed production chamber, and a pressure relief valve is provided on the pressure relief pipe; In the above technical solution, the pressure relief pipe is installed to avoid excessive air pressure in the annular seed production chamber, which could cause deformation of the outer sleeve or excessive compression damage to the seeds.

[0012] Based on this, a mounting base is fixedly connected to the side wall of the base, and a striking rod is slidably connected to the mounting base. The striking rod contacts the outer wall of the outer rotating sleeve. A limit block is fixedly installed at the lower end of the striking rod. A tension spring is sleeved on the striking rod. One end of the tension spring is fixedly connected to the mounting base, and the other end is fixedly connected to the limit block. Multiple push blocks are equidistantly arranged on the outer wall of the outer rotating sleeve. The push blocks are inclined and are used in conjunction with the striking rod. In the above technical solution, the vibration generated by striking the outer wall of the outer rotating sleeve with the striking rod can not only effectively cause the seeds attached to the inner wall of the outer rotating sleeve and the seeds stuck in the gaps of the outer brush to fall off, but also transmit the vibration to the seed group in the annular seed production cavity, promoting relative movement between the seeds.

[0013] Secondly, the cover plate is detached and connected to the outer rotating sleeve by fixing bolts.

[0014] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: This seed production robot, designed for use in farmland seed production, employs a coaxial, counter-rotating design between its outer and inner rotating sleeves. This drives the staggered inner and outer brushes to move synchronously in opposite directions. On one hand, it provides all-around mixing of the seeds, increasing the frequency of seed turning and the complexity of the movement trajectory, thereby increasing the contact area between the seeds and the pesticide and improving mixing efficiency. On the other hand, the inner brush's pesticide application method reduces pesticide atomization and evaporation waste compared to traditional spraying, improving pesticide utilization. Furthermore, the gentle rubbing and turning action of the brushes effectively prevents mechanical damage and ensures seed integrity when the pesticide is evenly applied to the seed surface. Combined with the staggered brush layout to eliminate coating blind spots, this further improves the uniformity and quality consistency of seed coating. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the structure of the present invention. Figure 3 ; Figure 4 This is a cross-sectional view of the outer and inner rotating sleeves of the present invention. Figure 1 ; Figure 5 This is a cross-sectional view of the outer and inner rotating sleeves of the present invention. Figure 2 ; Figure 6 This is a schematic diagram of the internal structure of the inner rotating sleeve of the present invention; Figure 7 This is a schematic diagram of the internal structure of the outer rotating sleeve of the present invention; Figure 8 This is a cross-sectional view of the outer and inner rotating sleeves of the present invention. Figure 3 ; Figure 9 This is the present invention. Figure 1 Enlarged view of section A; Figure 10 This is the present invention. Figure 6 Enlarged view of section B; Figure 11 This is the present invention. Figure 7 Enlarged view of section C; Figure 12 This is the present invention. Figure 3 Enlarged view of section D.

[0016] In the diagram: 1. Base; 101. Outer rotating sleeve; 102. Feed port; 103. Cover plate; 104. Outer brush; 2. Motor; 201. Drive shaft; 3. Inner rotating sleeve; 301. Inner brush; 302. Gear ring body; 303. Rotating shaft; 304. Gear one; 305. Gear two; 4. Drug storage chamber; 401. Piston disc; 402. Feeding hole; 403. Feeding chamber; 405. Discharge hole; 5. Lead screw; 501. Support seat; 502. Guide groove; 6. Gas supply chamber; 601. Air jet hole; 602. Branch pipe; 603. Hollow cavity; 604. Gas supply pipe; 605. Solenoid valve; 606. Pressure relief pipe; 7. Mounting seat; 701. Striking rod; 702. Push block; 703. Tension spring. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0018] Example 1: Refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 A seed production robot for farmland seed production includes two bases 1, and further includes an outer rotating sleeve 101 and an inner rotating sleeve 3. The outer rotating sleeve 101 is rotatably connected to the base 1. The outer rotating sleeve 101 and the inner rotating sleeve 3 are coaxially arranged and rotate in opposite directions. The inner and outer walls of the two form an annular seed production cavity. Multiple sets of inner brushes 301 are equidistantly arranged on the outer wall of the inner rotating sleeve 3. Each set of inner brushes 301 includes multiple brush bodies equidistantly arranged along the axial direction of the inner rotating sleeve 3. The inner brushes 301 have a hollow cavity inside, and the outer wall has a discharge hole 405 communicating with the internal cavity. Multiple sets of outer brushes 104 are equidistantly arranged on the inner wall of the outer rotating sleeve 101. Each set of outer brushes 104 includes multiple brush bodies equidistantly arranged along the axial direction of the outer rotating sleeve 101. The outer brushes 104 and the inner brushes 301 are staggered in the annular seed production cavity. The agent delivery unit is located inside the inner rotating sleeve 3, and its output end is connected to the internal cavity of the inner brush 301. It is used to deliver the agent into the cavity, and then the agent is discharged into the annular seed production cavity through the discharge hole 405. The feeding port 102 is opened on the outer rotating sleeve 101 and is connected to the annular seed production cavity. It is used to put wheat seeds to be coated into the annular seed production cavity. The cover plate 103 is detachably connected to the outer rotating sleeve 101 and is used to close the feeding port 102. One end of the outer rotating sleeve 101 is fixedly connected to a drive shaft 201, and a motor 2 is fixedly installed on the side wall of the base 1. The drive shaft 201 is fixedly connected to the output end of the motor 2.

[0019] One end of the outer rotating sleeve 101 is provided with a toothed ring body 302. Two rotating shafts 303 are rotatably connected to the side wall of the base 1. Gear 1 304 is fixedly installed on both rotating shafts 303. Gear 2 305 is fixedly installed on one end of the inner rotating sleeve 3. Gear 1 304 meshes with gear 2 302 and gear 2 305 respectively.

[0020] During operation, first open the cover plate 103, and put an appropriate amount of wheat seeds to be coated into the annular seed production chamber through the feeding port 102. Then, cover the cover plate 103 and fix it to ensure that the annular seed production chamber is sealed, effectively preventing the leakage of the agent and seeds from the feeding port 102 during the subsequent coating process. Then, motor 2 is started, and the output torque of motor 2 is transmitted to drive shaft 201. Drive shaft 201 drives outer sleeve 101 to rotate. When outer sleeve 101 rotates, it synchronously drives gear ring body 302 to rotate. Gear ring body 302 drives two gears 304 to rotate through meshing. The two gears 304 further mesh to drive gear 305 to rotate in the opposite direction (e.g., Figure 9 As shown), the inner rotating sleeve 3 and the outer rotating sleeve 101 rotate in opposite directions on the same axis. When the inner rotating sleeve 3 and the outer rotating sleeve 101 rotate in opposite directions, they drive the outer brush 104 on the inner wall and the inner brush 301 on the outer wall to move in opposite directions synchronously. This allows the staggered brushes to stir the wheat seeds in the annular seed production chamber in all directions. Compared with the stirring method of rotating in one direction, this greatly increases the frequency of seed turning and the complexity of the movement trajectory, thereby increasing the contact area and mixing efficiency between the seeds and the agent. Simultaneously, the agent delivery unit delivers the coating agent to the internal cavity of the inner brush 301. Under the delivery pressure, the agent is evenly exuded through the discharge hole 405 on the outer wall of the brush to the brush surface (e.g., Figure 10 As shown in the figure, this method of infiltrating the seed with the inner brush 301 can effectively reduce the waste caused by the atomization and volatilization of the agent compared with the traditional spraying method, so that the agent can directly act on the seed mixing area and improve the agent utilization rate. Meanwhile, as the inner rotating sleeve 3 and the outer rotating sleeve 101 continue to rotate in opposite directions, the inner brush 301 and the outer brush 104 gently and thoroughly knead and turn the seeds in the annular seed production chamber. On the one hand, the inner brush 301, which exudes the agent, can evenly coat the seed surface during contact with the seeds. On the other hand, the gentle action can effectively prevent mechanical damage to the seeds and ensure their integrity. At the same time, the staggered design of the inner brush 301 and the outer brush 104 ensures that each seed can be fully contacted by the brush, avoiding the occurrence of coating blind spots, improving the uniformity of seed coating, and ensuring the consistency of seed coating quality.

[0021] Example 2: Refer to Figure 1A seed production robot for farmland seed production is basically the same as that in Example 1, except that the toothed ring body 302 is a half toothed ring or a full toothed ring. When the seed production task is long-term, continuous, and large-volume seed coating, a full-tooth ring is selected as the tooth ring body 302. After the motor 2 is started, the output torque of the motor 2 drives the drive shaft 201 to rotate the outer rotating sleeve 101. The outer rotating sleeve 101 synchronously drives the full-tooth ring to rotate. Since the teeth of the full-tooth ring cover the entire circumference, it always maintains a meshing state with the gear 1 304 during the rotation. The gear 1 304 continuously drives the inner rotating sleeve 3 and the outer rotating sleeve 101 to rotate in opposite directions on the same axis through meshing with the gear 2 305 on the inner rotating sleeve 3. The continuous opposite rotation of the inner rotating sleeve 3 and the outer rotating sleeve 101 ensures that the inner brush 301 and the outer brush 104 in the annular seed production cavity always stir the seeds, ensuring that the seeds can be fully turned and come into contact with the agent throughout the long-term seed production process. This avoids uneven seed coating in some areas due to interruption of stirring, thus meeting the requirements of high efficiency and stability in continuous seed production. When seed production requires high seed integrity and coating quality, and excessive seed wear must be avoided, a semi-toothed ring is selected as the ring body 302. After starting the motor 2, the outer rotating sleeve 101 drives the semi-toothed ring to rotate. Only when the teeth of the semi-toothed ring rotate to engage with gear 304 will the gear drive the inner rotating sleeve 3 to rotate. When the toothless part of the semi-toothed ring rotates to the position of gear 304, the engagement is broken, the inner rotating sleeve 3 loses power input, and continues to rotate for a period of time under inertia before gradually stopping. This cycle forms intermittent rotation. This intermittent rotation method allows the seeds in the annular seed production chamber to alternate between tumbling and stirring and resting. The tumbling stage ensures that the agent and seeds are fully mixed, while the resting stage reduces friction and collision between seeds. On the one hand, it effectively avoids excessive wear of seeds due to prolonged high-speed tumbling, protecting the integrity of the seeds. On the other hand, during the resting process, the agent on the seed surface has more time to adhere and initially dry, reducing the shedding of the agent during stirring and improving the coating quality.

[0022] Example 3: Reference Figure 4 , Figure 5A seed production robot for farmland seed production is basically the same as in Embodiment 1, but further includes a drug delivery unit comprising a drug storage chamber 4 pre-installed within an inner rotating sleeve 3, the drug storage chamber 4 pre-stores a drug for seed coating, a piston disc 401 slidably connected within the drug storage chamber 4, a material delivery chamber 403 formed between the inner and outer walls of the inner rotating sleeve 3, the material delivery chamber 403 communicating with the internal cavity of the inner brush 301, a material delivery hole 402 formed on the inner rotating sleeve 3, one end of the material delivery hole 402 communicating with the drug storage chamber 4, and the other end communicating with the material delivery chamber 403, symmetrical guide grooves 502 formed on the cavity wall of the drug storage chamber 4, a guide block slidably connected within the guide groove 502, the guide block being integrally formed with the piston disc 401; and a support base 501 set on one side of the base 1, a screw rod 5 threadedly connected to the support base 501, one end of the screw rod 5 passing through the inner rotating sleeve 3 being fixedly connected to the piston disc 401.

[0023] During the seed production process, when the inner rotating sleeve 3 begins to rotate stably under the drive of gear transmission, the drug storage cavity 4 preset inside the inner rotating sleeve 3 rotates synchronously with the inner rotating sleeve 3. At this time, the piston disc 401 inside the drug storage cavity 4 effectively avoids relative rotation with the drug storage cavity 4 under the sliding cooperation and limiting effect of the guide blocks on both sides and the guide groove 502 of the cavity wall of the drug storage cavity 4, and thus stably follows the inner rotating sleeve 3 to rotate synchronously. The cooperation between the guide blocks and the guide groove 502 provides a guarantee for the smooth sliding of the piston disc 401 in the future. Since the piston disc 401 is fixedly connected to one end of the lead screw 5, the rotation of the piston disc 401 directly drives the lead screw 5 to rotate together. The other end of the lead screw 5 forms a threaded engagement with the support seat 501 on the side of the base 1. During the rotation of the lead screw 5, the axial thrust generated by the threaded pair drives the piston disc 401 to slide smoothly along the axis of the storage chamber 4 towards the conveying hole 402. The sliding speed is kept in constant proportion to the rotation speed of the inner rotating sleeve 3, which achieves the purpose of uniformly conveying the agent to the discharge hole 405. This effectively avoids the problem of uneven seed coating caused by fluctuations in the conveying speed and ensures the stability of the coating quality. As the piston disc 401 slides at a constant speed along the axis of the drug storage chamber 4, the coating agent in the drug storage chamber 4 is continuously subjected to stable pressure. Under the action of pressure, the agent enters the conveying chamber 403 between the inner and outer walls of the inner rotating sleeve 3 through the conveying hole 402 on the drug storage chamber 4 (e.g., Figure 6 As shown), because the conveying chamber 403 and the internal cavities of each group of inner brushes 301 are designed to be connected in a one-to-one correspondence, the agent entering the conveying chamber 403 can be evenly distributed into the cavity of each inner brush 301 (as shown). Figure 10As shown in the figure, this ensures that the amount of pesticide exuded from each group of brushes is consistent, further improving the uniformity of pesticide distribution. Finally, the pesticide is uniformly exuded to the surface of the brush through the densely distributed discharge holes 405 on the outer wall of the inner brush 301. This pesticide exudation method allows the pesticide to act directly on the brush surface in contact with the seeds. Compared with the traditional spraying method, it can effectively reduce the loss of pesticide caused by atomization and volatilization, significantly improve the pesticide utilization rate, and reduce the seed production cost. As the agent seeps out from the inner brush 301, the inner rotating sleeve 3 drives the inner brush 301 and the outer brush 104 on the outer rotating sleeve 101 to move in opposite directions. The agent that seeps out at a uniform speed on the surface of the brush can be more evenly coated on the surface of each seed under the rubbing and turning action of the brush, avoiding the accumulation or leakage of local agent, and greatly improving the consistency of seed coating quality.

[0024] It should be noted that a replenishment hole is provided on the side wall of the outer sleeve 101, which is directly connected to the drug storage chamber 4. A sealing plug (not shown in the figure) is inserted into the replenishment hole. The sealing plug can maintain the airtightness of the drug storage chamber 4 during the coating operation to prevent drug leakage or impurities from entering. After the coating process of a batch of seeds is completed, the piston disc 401 in the storage chamber 4 is first driven to slide and reset to the side of the feed hole 402 to make room for replenishing the agent. At this time, the operator can directly remove the sealing plug in the replenishment hole and replenish the agent required for subsequent seed coating into the storage chamber 4 through the replenishment hole. After replenishment, the sealing plug can be reinserted.

[0025] Example 4: Reference Figure 2 , Figure 4 A seed production robot for farmland seed production is basically the same as in Embodiment 1, but further, each set of outer brushes 104 has a hollow cavity inside, and the outer wall has an air jet hole 601 that communicates with the inner cavity. Multiple air delivery chambers 6 are opened between the inner and outer walls of the outer rotating sleeve 101. The air delivery chambers 6 communicate with the inner cavity of the outer brushes 104. A hollow cavity 603 is opened inside the drive shaft 201. A branch pipe 602 is provided on the outer rotating sleeve 101. One end of the branch pipe 602 is connected to the air delivery chamber 6, and the other end is connected to the hollow cavity 603. It also includes an air delivery pipe 604, which is connected to the hollow cavity 603 through a rotary joint. The rotary joint is provided on the drive shaft 201. The end of the air delivery pipe 604 away from the hollow cavity 603 is used to connect to an external air pump (not shown in the figure). During the seed production process, when the inner rotating sleeve 3 and the outer rotating sleeve 101 drive the brush to start stirring and coating the seeds, the air pump is started simultaneously. The compressed air generated by the air pump enters the rotary joint through the air delivery pipe 604, and then is introduced into the hollow cavity 603 inside the drive shaft 201 by the rotary joint. The compressed air in the hollow cavity 603 is then distributed to the various air delivery chambers 6 between the inner and outer walls of the outer rotating sleeve 101 (e.g., ...) through the branch pipe 602 provided on the outer rotating sleeve 101. Figure 7 As shown), it then enters the internal cavity of the outer brush 104, and is finally sprayed into the annular seed production chamber through the air jet hole 601 (as shown). Figure 11 As shown, on the one hand, it can drive the seeds in the annular seed production chamber to rotate irregularly, so that all surfaces of the seeds can fully contact the inner brush 301 that penetrates the medicine, eliminate coating blind spots, and improve coating uniformity. On the other hand, the sprayed airflow can accelerate the drying speed of the medicine on the seed surface, shorten the seed production cycle, and improve seed production efficiency. At the same time, the airflow-driven seed rotation method replaces some of the traditional mechanical stirring force, reduces seed coat damage caused by hard friction and collision between seeds, reduces seed damage rate, and ensures seed germination rate. In addition, the rotary joint ensures that the air supply pipe 604 remains fixed during the rotation of the drive shaft 201, preventing the air supply pipe 604 from becoming tangled or damaged.

[0026] like Figure 5 As shown, the outer sleeve 101 is provided with a pressure relief pipe 606, which is connected to the annular seed production chamber, and a pressure relief valve is provided on the pressure relief pipe 606. During the continuous jetting process of the jet nozzle 601, the gas in the annular seed production chamber accumulates continuously, and the air pressure gradually increases. When the air pressure in the chamber exceeds the preset opening pressure of the pressure relief valve, the pressure relief valve will automatically open, quickly expelling the excess gas in the annular seed production chamber through the pressure relief pipe 606. When the air pressure in the chamber drops back to a safe range, the pressure relief valve will automatically close, thereby achieving dynamic automatic balance of air pressure in the annular seed production chamber. This effectively avoids excessive air pressure in the annular seed production chamber, which could lead to deformation of the outer sleeve 101 or excessive compression and damage to the seeds.

[0027] Example 5: Refer to Figure 2 , Figure 4A seed production robot for farmland seed production is basically the same as in Embodiment 1, but with a further improvement: a solenoid valve 605 is provided on the branch pipe 602. When the branch pipe 602 rotates with the outer rotating sleeve 101 to the lowest point of the outer rotating sleeve 101, the air intake of the branch pipe 602 is increased by regulating the solenoid valve 605. The airflow is introduced into the internal cavity of the corresponding set of outer brushes 104 through the branch pipe 602 and the air delivery chamber 6, thereby increasing the air intake of the cavity and driving the outer brushes 104 to expand and harden. A position sensor (not shown in the figure), such as a Hall sensor, is installed on the base 1 at the position corresponding to the lowest point of the outer rotating sleeve 101 to detect whether the branch pipe 602 has rotated to the lowest point. The position sensor and the solenoid valve 605 are electrically connected through the controller to realize linkage control. The brush body of the outer brushes 104 is made of an elastic material, such as a nylon brush with elastic filaments, which can expand and harden when the air intake increases. During the seed coating process, the outer rotating sleeve 101 rotates at a constant speed under the drive of the motor 2. All the branch tubes 602 connected to its side wall move in a circular motion synchronously with the outer rotating sleeve 101. At this time, the position sensor installed on the side wall of the base 1 monitors the specific circumferential position of each branch tube 602 in real time and continuously transmits the position signal to the controller. Because the seeds in the annular seed production chamber will naturally accumulate towards the lowest point area under the action of gravity, the seed density in this area is relatively high, which is prone to uneven coating. When a branch tube 602 rotates with the outer rotating sleeve 101 to the lowest point of the outer rotating sleeve 101, the position sensor immediately sends a trigger signal to the controller. Upon receiving the trigger signal, the controller responds quickly, controlling the solenoid valve 605 on the branch pipe 602 to increase its opening (e.g., Figure 11 As shown), the air intake of the branch pipe 602 is increased. Under pressure, the compressed air is quickly introduced into the corresponding air delivery chamber 6 through the branch pipe 602 and rapidly fills the internal cavity of the outer brush 104 in this area, causing the air pressure in the cavity to rise rapidly in a short time. Under the action of air pressure, the outer brush 104 expands and hardens, and its radial dimension increases synchronously. The distance between adjacent outer brushes 104 is reduced accordingly, eventually reducing to the extent that only the inner brush 301 can pass through smoothly. The hardened and enlarged outer brush 104 exerts a stronger pushing force on the piled seeds, effectively pushing and dispersing the seeds piled at the lowest point from the dense area, avoiding excessive seed aggregation. As the outer rotating sleeve 101 continues to rotate, multiple sets of branch pipes 602 sequentially reach the lowest point and trigger the corresponding outer brush 104 to expand and harden, so that the seeds pushed away from the piled area by each set of outer brushes 104 are blocked one by one in the independent small cavity formed by two adjacent sets of outer brushes 104, achieving uniform seed distribution. At this time, the inner rotating sleeve 3 drives the inner brush 301 to continue rotating, and the inner brush 301 continuously seeps out the coating agent, while gently rubbing the seeds in the small cavity. At the same time, the air jet hole 601 on the outer brush 104 continuously sprays out gas, driving the seeds dispersed in each small cavity to rotate at high frequency. On the one hand, each surface of the seed can fully contact the agent, achieving targeted secondary coating and effectively solving the problem of local missed coating and thin coating caused by seed accumulation in traditional coating. On the other hand, the airflow can accelerate the drying speed of the agent on the seed surface, reduce the seed clumping caused by agent adhesion, and improve the dispersibility of the seed after coating. In summary, this dynamic control and zoning method not only avoids seed accumulation affecting coating uniformity, but also allows the seeds in the small cavities to rotate more fully, resulting in more uniform agent adhesion and improving the thickness consistency and adhesion of the coating film. At the same time, the outer brush 104 is made of flexible material, so even if it expands and hardens, it will not cause mechanical damage to the seeds when pushing them, thus ensuring seed viability. After the seed coating process is completed, the controller controls all solenoid valves 605 to return to the normal air intake state. The air pressure in the cavity inside the outer brush 104 decreases accordingly, gradually restoring the soft state and initial size. The distance between adjacent outer brushes 104 increases, which facilitates the smooth discharge of the coated seeds from the annular seed production chamber, preparing for the next batch of seed production and achieving a seamless connection in the seed production process.

[0028] Example 6: Refer to Figure 8 , Figure 12 A seed production robot for farmland seed production is basically the same as in Embodiment 1. However, the base 1 has a mounting seat 7 fixedly connected to its side wall, and a striking rod 701 is slidably connected to the mounting seat 7. The striking rod 701 contacts the outer wall of the outer rotating sleeve 101. A limit block is fixedly installed at the lower end of the striking rod 701. A tension spring 703 is sleeved on the striking rod 701. One end of the tension spring 703 is fixedly connected to the mounting seat 7, and the other end is fixedly connected to the limit block. Multiple push blocks 702 are equidistantly arranged on the outer wall of the outer rotating sleeve 101. The push blocks 702 are inclined and cooperate with the striking rod 701. When the outer sleeve 101 rotates, the push block 702 on its outer wall rotates accordingly. When the push block 702 rotates to contact the striking rod 701, due to the inclined setting of the push block 702, it will generate a downward pushing force on the striking rod 701, causing the striking rod 701 to slide downward along the mounting base 7. At the same time, the tension spring 703 is stretched. When the push block 702 rotates and disengages from the striking rod 701, the tension of the tension spring 703 causes the striking rod 701 to quickly return to its original position. Its upper end impacts the outer wall of the outer sleeve 101, generating vibration. The vibration not only effectively promotes the shedding of seeds attached to the inner wall of the outer sleeve 101 and seeds stuck in the gaps of the outer brush 104, preventing seed residue from clumping and affecting the uniformity of subsequent coating operations and improving seed utilization, but also transmits the vibration to the seed group in the annular seed production cavity, promoting relative movement between seeds, breaking the static accumulation state of seeds, and allowing each seed to come into fuller contact with the penetrating brush, further improving the uniformity of the agent's adhesion on the seed surface and reducing local missed coating phenomena.

[0029] like Figure 1 , Figure 2 As shown, the cover plate 103 is detachably connected to the outer rotating sleeve 101 by fixing bolts; When it is necessary to put the seeds to be coated into the annular seed production chamber, use a tool to unscrew the fixing bolts on the cover plate 103 one by one, and then remove the cover plate 103 to make the feeding port 102 completely open. The wheat seeds to be treated can then be evenly put into the annular seed production chamber through the feeding port 102. After the seeds are put in, the cover plate 103 is accurately placed on the feeding port 102, and the fixing bolts are tightened one by one to fix the cover plate 103. This connection method can make the annular seed production chamber form a sealed state. In the subsequent coating operation, it can effectively prevent the agent from leaking from the feeding port 102 and the seeds from falling off during the rolling process. This reduces the waste of agents, avoids the pollution of the working environment, and ensures the safety of the operators and the surrounding environment. Once the seed coating process is complete, simply unscrew the fixing bolts again to open the cover plate 103 and adjust the feeding port 102 to a vertical orientation to easily remove the coated seeds. This also facilitates cleaning and subsequent maintenance of the annular seed production chamber.

[0030] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention.

Claims

1. A seed production robot for use in farmland seed production, comprising two bases (1), characterized in that, It also includes: an outer rotating sleeve (101) and an inner rotating sleeve (3). The outer rotating sleeve (101) is rotatably connected to the base (1). The outer rotating sleeve (101) and the inner rotating sleeve (3) are arranged coaxially and rotate in opposite directions. The inner and outer walls of the two form an annular seed production cavity. Multiple sets of inner brushes (301) are equidistantly arranged on the outer wall of the inner rotating sleeve (3). Each set of inner brushes (301) includes multiple brush bodies equidistantly arranged along the axial direction of the inner rotating sleeve (3). The inner brushes (301) are hollow inside, and the outer wall is provided with a discharge hole (405) that communicates with the inner cavity. Multiple sets of external brushes (104) are equidistantly arranged on the inner wall of the outer rotating sleeve (101). Each set of external brushes (104) includes multiple brush bodies equidistantly arranged along the axial direction of the outer rotating sleeve (101). The external brushes (104) and the inner brushes (301) are arranged in an alternating pattern within the annular seed production cavity. The agent delivery unit is located inside the inner rotating sleeve (3), and its output end is connected to the internal cavity of the inner brush (301) to deliver the agent into the cavity, thereby allowing the agent to be discharged into the annular seed production cavity through the discharge hole (405). The feeding port (102) is located on the outer rotating sleeve (101) and is connected to the annular seed production chamber. It is used to feed wheat seeds to be coated into the annular seed production chamber. The cover plate (103) is detachably connected to the outer rotating sleeve (101) and is used to close the feeding port (102).

2. The seed production robot for farmland seed production according to claim 1, characterized in that, One end of the outer sleeve (101) is fixedly connected to a drive shaft (201), and a motor (2) is fixedly installed on the side wall of the base (1). The drive shaft (201) is fixedly connected to the output end of the motor (2).

3. The seed production robot for farmland seed production according to claim 2, characterized in that, One end of the outer rotating sleeve (101) is provided with a toothed ring body (302), and two rotating shafts (303) are rotatably connected to the side wall of the base (1). Gear 1 (304) is fixedly installed on both rotating shafts (303), and gear 2 (305) is fixedly installed on one end of the inner rotating sleeve (3). Gear 1 (304) meshes with geared ring body (302) and gear 2 (305) respectively.

4. The seed production robot for farmland seed production according to claim 3, characterized in that, The toothed ring body (302) can be a half toothed ring or a full toothed ring.

5. The seed production robot for farmland seed production according to claim 3, characterized in that, The agent delivery unit includes a storage cavity (4) pre-installed in the inner rotating sleeve (3), which stores the agent for seed coating. A piston disc (401) is slidably connected in the storage cavity (4). A conveying cavity (403) is opened between the inner and outer walls of the inner rotating sleeve (3). The conveying cavity (403) is connected to the internal cavity of the inner brush (301). A conveying hole (402) is opened on the inner rotating sleeve (3). One end of the conveying hole (402) is connected to the storage cavity (4), and the other end is connected to the conveying cavity (403). A guide groove (502) is symmetrically opened on the cavity wall of the storage cavity (4). A guide block is slidably connected in the guide groove (502). The guide block and the piston disc (401) are integrally formed. It also includes a support seat (501) set on one side of the base (1), and a screw (5) is threadedly connected to the support seat (501). One end of the screw (5) passes through the inner rotating sleeve (3) and is fixedly connected to the piston disc (401).

6. The seed production robot for farmland seed production according to claim 2, characterized in that, Each set of outer brushes (104) has a hollow cavity inside, and the outer wall has an air jet hole (601) that communicates with the inner cavity. Multiple air delivery chambers (6) are opened between the inner and outer walls of the outer rotating sleeve (101). The air delivery chambers (6) are connected to the inner cavity of the outer brushes (104). A hollow cavity (603) is opened inside the drive shaft (201). A branch pipe (602) is provided on the outer rotating sleeve (101). One end of the branch pipe (602) is connected to the air delivery chamber (6), and the other end is connected to the hollow cavity (603). It also includes an air delivery pipe (604). The air delivery pipe (604) is connected to the hollow cavity (603) through a rotary joint. The rotary joint is provided on the drive shaft (201).

7. The seed production robot for farmland seed production according to claim 6, characterized in that, A solenoid valve (605) is provided on the branch pipe (602). When the branch pipe (602) rotates with the outer rotating sleeve (101) to the lowest point of the outer rotating sleeve (101), the air intake of the branch pipe (602) is increased by the solenoid valve (605). The airflow is introduced into the internal cavity of the corresponding set of outer brushes (104) through the branch pipe (602) and the air delivery chamber (6), so that the air intake of the cavity increases accordingly, thereby driving the outer brushes (104) to expand and harden.

8. The seed production robot for farmland seed production according to claim 6, characterized in that, The outer rotating sleeve (101) is provided with a pressure relief pipe (606), which is connected to the annular seed production chamber. A pressure relief valve is provided on the pressure relief pipe (606).

9. The seed production robot for farmland seed production according to claim 1, characterized in that, A mounting base (7) is fixedly connected to the side wall of the base (1). A striking rod (701) is slidably connected to the mounting base (7). The striking rod (701) contacts the outer wall of the outer rotating sleeve (101). A limit block is fixedly installed at the lower end of the striking rod (701). A tension spring (703) is sleeved on the striking rod (701). One end of the tension spring (703) is fixedly connected to the mounting base (7), and the other end is fixedly connected to the limit block. Multiple push blocks (702) are equidistantly arranged on the outer wall of the outer rotating sleeve (101). The push blocks (702) are inclined and used in conjunction with the striking rod (701).

10. The seed production robot for farmland seed production according to claim 1, characterized in that, The cover plate (103) is detached and connected to the outer rotating sleeve (101) by fixing bolts.

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