Rice diversion system and air-blast rice seeder

Abstract

The utility model relates to the technical fields of agricultural seeding machine more specifically, relate to a kind of rice shunting system and air sending rice seeding machine, and system includes seeding device and shunting device;Seeding device includes support and seed tank, drive motor, seed metering unit and seed outlet component, seed metering unit is connected between seed tank and seed outlet component, drive motor is connected with seed metering unit, and seed outlet component independently is equipped with fan;Shunting device includes return pipe, shunt valve, seed tube and seed guide pipe, and the number of seed tube is consistent with seed outlet component, the air inlet of shunt valve is connected with seed outlet component, the return port of shunt valve is connected with seed tank by return pipe, one end of seed tube is connected seed guide pipe, the other end of a part of seed tube is connected the seed outlet of shunt valve, and the other end of remaining seed tube is connected seed outlet component.The utility model can realize rice single-row seeding operation switch control, reduce incomplete or repeated seeding phenomenon of sowing, avoid rice seed waste, and improve rice planting quality.

Description

Technical Field

[0001] This utility model relates to the technical field of agricultural seeders, and more specifically, to a rice diversion system and an air-driven rice seeder. Background Technology

[0002] Rice production plays a vital role in grain production. Direct seeding of rice is a rice cultivation technique that involves sowing seeds directly into the field without the need for seedling raising or transplanting. Compared to traditional seedling cultivation methods, direct seeding is more time-saving, labor-saving, and efficient. With the continuous development of mechanization in rice cultivation, direct seeding technology is gaining increasing acceptance among farmers.

[0003] Rice seeders can be classified into mechanical, vibratory, and pneumatic types based on the working principle of their seed metering devices. Among them, seeders using pneumatic seed metering devices have advantages such as higher usability and operational efficiency, and have therefore gradually become a major research direction for scholars. However, the current mainstream pneumatic seeders adopt a centralized seed supply and single air source decentralized exhaust seeding method, which places high demands on air duct design and air source distribution.

[0004] Existing rice planters often employ overall control and synchronous sowing, making it impossible to control the number of rows sown in real time. Therefore, in the complex field operation environment, rice planters are prone to problems such as incomplete sowing or repeated sowing, requiring subsequent manual replanting, which not only wastes rice seeds and increases costs, but also affects the quality of rice production. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a rice diversion system and an air-driven rice seeder, which can realize the on / off control of single-row rice sowing operations, improve the flexibility in dealing with complex field operations, reduce the phenomenon of incomplete sowing or repeated sowing, avoid the waste of rice seeds, and improve the quality of rice planting.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A rice seed distribution system is provided, comprising a sowing device and a distribution device. The sowing device includes a support frame and a seed box, a drive motor, a seed metering unit, and a seed dispensing component mounted on the support frame. The seed metering unit is connected between the seed box and the seed dispensing component. The output shaft of the drive motor is connected to the seed metering unit to drive the seed metering unit to sow seeds. Each seed dispensing component is independently equipped with a fan for air intake. The distribution device includes a return pipe, a distribution valve, a seed metering pipe, and a seed guide pipe. The distribution valve has an air inlet, a return port, and a seed dispensing port. The number of seed metering pipes is the same as the number of seed dispensing components. The air inlet of the distribution valve is connected to the seed dispensing component. The return port of the distribution valve is connected to the seed box through the return pipe. One end of the seed metering pipe is connected to the seed guide pipe. The other end of a portion of the seed metering pipes is connected to the seed dispensing port of the distribution valve. The other end of the remaining seed metering pipes is connected to the seed dispensing component.

[0007] This novel rice seed distribution system operates by a drive motor that continuously and evenly distributes seeds from the seed box into each individual seed metering unit. An independently installed fan generates a pressurized airflow, creating a mixed flow of seeds and air within each unit, which is then discharged along the seed outlet. Some seeds exit the seed outlet and travel along the seed outlet pipe into the seed guide pipe before falling into the field. During normal sowing, a diversion valve directs the remaining seeds through the seed outlet, allowing them to enter the seed outlet pipe via the air inlet and then fall into the field through the seed guide pipe. During standby / path adjustment, the diversion valve directs the seeds through the return pipe, guiding them back to the seed box, thus achieving seed recycling and preventing waste and blockages. In this invention, by switching the diversion valve, seeds can be guided back to the seed box at the start, end, or turn of the field, ensuring that the pipeline is full and that each sowing is accurate, avoiding seedling loss or blockage caused by unstable airflow; each seed outlet component is equipped with an independent fan, forming an independent air path, so that even if a fan or pipeline in one path fails, it will not affect the sowing operation of other rows, improving reliability; the two connection methods of the seed discharge pipe (with and without the diversion valve) allow the system to be configured according to different agronomic requirements.

[0008] Furthermore, it also includes an airflow escape pipe, one end of which is connected to the seed guide pipe, and the airflow escape pipe is provided with an airflow escape hole. Furthermore, the diversion valve includes a valve body, a valve, a servo motor, a first flange, a second flange, and a connecting rod. The servo motor is mounted on the valve body. The output end of the servo motor is hinged to one end of the first flange. The other end of the first flange is hinged to one end of the connecting rod. The other end of the connecting rod is hinged to one end of the second flange. The other end of the second flange is hinged to the valve. The valve is rotatably mounted in the valve body. The servo motor is used to drive the valve to rotate and close the return port or the seed discharge port. Furthermore, there are twelve seed guide tubes, twelve seed discharge tubes, twelve seed discharge units, and twelve seed outlet components. There are six diversion valves. One end of each seed discharge tube is connected to a seed guide tube. The other ends of the six seed discharge tubes are connected to the seed discharge ports of the six diversion valves. The other ends of the remaining six seed discharge tubes and the air inlets of the six diversion valves are connected to the seed outlet components. This utility model also provides an air-driven rice planter, including a transplanter chassis, a frame, a ditching and ridging device, a control system, and the aforementioned rice diversion system. The frame is connected to the rear end of the transplanter chassis, the control system is communicatively connected to the rice diversion system, the rice diversion system and the ditching and ridging device are connected to the frame, and the seed guide tube is connected to the rear end of the ditching and ridging device.

[0009] This utility model of an air-pumped rice seeder, through the switching of a diversion valve, can guide seeds back to the seed box at the start, end, or turn of the field, ensuring that the pipeline is full and that each sowing is accurate, avoiding seedling gaps or blockages caused by unstable airflow. Each seed outlet component is equipped with an independent fan, forming an independent air path. Even if one fan or pipeline fails, it will not affect the sowing operation of other rows, improving reliability. The two connection methods of the seed discharge pipe (with and without the diversion valve) allow the system to be configured according to different agronomic requirements. It can realize the completion of furrowing, ridging, and precision sowing in one go, greatly improving the efficiency of direct seeding in paddy fields. It directly uses a mature rice transplanter chassis, eliminating the need to develop a separate power and walking system, reducing the overall machine cost and the difficulty of promotion. The control system provides unified management of the diversion system, laying the foundation for realizing intelligent functions such as variable seeding, automatic speed tracking, and operation monitoring.

[0010] Furthermore, the diversion device also includes an adjustment frame, a mounting support, and an adjustment seat. The adjustment seat is fixedly connected to the furrowing and ridging device via the mounting support. The adjustment frame and the adjustment seat are detachably connected. The connection position between the adjustment frame and the adjustment seat is adjustable. The seed guide tube is installed on the adjustment frame. Furthermore, the furrowing and ridging device includes a base plate, a water ditch component, a seeding ditch component, and two mudguards. The two mudguards are symmetrically installed on both sides of the front end of the base plate, and the front end of the mudguards protrudes from the base plate. The water ditch component is distributed on both sides of the bottom of the base plate, and the seeding ditch component is distributed at the bottom of the base plate. The position of the seed guide tube corresponds to the position of the seeding ditch component. Furthermore, the frame includes a main beam, a suspension device, a fixed frame, a main support, and side supports. The suspension device is installed on the upper part of the main beam, the fixed frame is located in the middle of the main beam, the main support is located on the lower part of the main beam, the two side supports are symmetrically distributed on both sides of the main beam, the sowing device is installed on the fixed frame, and the furrowing and ridging device is fixedly connected to the side supports. Furthermore, it also includes a speed measuring device for measuring the travel speed of the rice transplanter chassis, the speed measuring device being installed on the rice transplanter chassis and being communicatively connected to the control system. Furthermore, the speed measuring device includes a mounting base, a speed encoder, a coupling, and an adapter sleeve. The adapter sleeve is installed on the power output shaft of the rice transplanter chassis. The speed encoder is fixedly installed on the mounting base. The coupling connects the speed encoder and the adapter sleeve. The speed encoder is communicatively connected to the control system. Compared with the prior art, the beneficial effects of this utility model are as follows: The diversion device enables the switching control of single-row rice sowing operations, improving flexibility in dealing with complex field operations, reducing incomplete sowing or repeated sowing, avoiding waste of rice seeds, and improving the quality of rice cultivation. The number of sowing rows can be adjusted, and seeds can be delivered independently to each row by air, which reduces the requirements for air duct design and improves the uniformity of rice sowing; Using a high-speed rice transplanter chassis as a power source, the machine can simultaneously level the land, open seeding furrows, open irrigation furrows, and sow seeds through a frame, ditching and ridging device, and speed measuring device. The seed discharge rate is matched with the driving speed, and the seeding rate is adjustable in real time. This simplifies the operation process, shortens the operation time, and reduces the operation cost. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of the pneumatic rice planter in this embodiment of the present invention; Figure 2 This is a perspective view of the pneumatic rice planter in an embodiment of this utility model; Figure 3 This is a schematic diagram of the frame structure in an embodiment of the present utility model; Figure 4 This is a schematic diagram of the ditching and ridging device in an embodiment of the present invention; Figure 5 This is a schematic diagram of the sowing device in an embodiment of the present invention; Figure 6 This is a perspective view of the sowing device in an embodiment of the present invention; Figure 7 This is a schematic diagram of the diversion device from a first-view perspective in an embodiment of this utility model; Figure 8 This is a schematic diagram of the diversion device from a second perspective in an embodiment of this utility model; Figure 9 This is a schematic diagram of the speed measuring device in an embodiment of the present invention; Figure 10 This is a schematic diagram of the flow divider valve in an embodiment of the present invention; Figure 11 This is a perspective view of the diversion valve in an embodiment of this utility model.

[0012] In the attached diagram: 1-Rice transplanter chassis; 2-Frame; 21-Suspension device; 22-Main beam; 23-Side support; 24-Main support; 25-Fixing frame; 3-Ditching and ridging device; 31-Mudguard; 32-Bottom plate; 33-Water ditch component; 34-Sowing ditch component; 4-Sowing device; 41-Seed box; 42-Support; 43-Seed metering unit; 44-Drive motor; 45-Seed dispensing component; 46-Fan; 5-Diverter device; 51-Return pipe; 52-Diverter valve; 521-Valve body; 522-Valve; 523-Steering gear; 524-First flange; 525-Connecting rod; 526-Second flange; 53-Seed discharge pipe; 54-Seed guide pipe; 55-Adjusting frame; 56-Airflow escape pipe; 57-Mounting support; 58-Adjusting seat; 6-Speed ​​measuring device; 61-Mounting seat; 62-Speed ​​encoder; 63-Coupling; 64-Adapter sleeve; 7-Control system. Detailed Implementation

[0013] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0014] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0015] Example 1 A rice diversion system, such as Figure 1 , Figure 2 , Figures 5 to 8 As shown, the device includes a sowing device 4 and a diversion device 5. The sowing device 4 includes a support 42 and a seed box 41, a drive motor 44, a seed metering unit 43, and a seed dispensing component 45 mounted on the support 42. The seed metering unit 43 is connected between the seed box 41 and the seed dispensing component 45. The output shaft of the drive motor 44 is connected to the seed metering unit 43 to drive the seed metering unit 43 to sow seeds. Each seed dispensing component 45 is independently equipped with a fan 46 for air intake. The diversion device 5 includes a return pipe 51 and a diversion valve 5. 2. The seed discharging pipe 53 and the seed guide pipe 54, the diversion valve 52 is provided with an air inlet, a return port and a seed discharging port. The number of seed discharging pipes 53 is the same as the number of seed discharging components 45. The air inlet of the diversion valve 52 is connected to the seed discharging component 45. The return port of the diversion valve 52 is connected to the seed box 41 through the return pipe 51. One end of the seed discharging pipe 53 is connected to the seed guide pipe 54. The other end of a portion of the seed discharging pipes 53 is connected to the seed discharging port of the diversion valve 52. The other end of the remaining seed discharging pipes 53 is connected to the seed discharging component 45.

[0016] In the above-mentioned rice distribution system, during use, the drive motor 44 drives the seed metering unit 43 to continuously and evenly discharge seeds from the seed box 41 into each seed metering unit 43. An independently installed fan 46 generates a certain pressure airflow, creating a mixed airflow between the seeds and the airflow within each seed metering unit 43, which is then discharged along the seed outlet component 45. Some seeds exit from the seed outlet component 45, travel along the seed metering pipe 53, and enter the seed guide pipe 54, falling into the field. For the remaining seeds, during normal sowing, the diversion valve 52 directs the seeds to the seed metering port, allowing them to enter the seed metering pipe 53 with the airflow through the air inlet, and then fall into the field through the seed guide pipe 54. During standby / path adjustment, the diversion valve 52 directs the seeds to the return port, allowing them to be guided by the airflow through the air inlet to the return pipe 51, returning to the seed box 41, thus achieving seed circulation and avoiding waste and blockage. In this embodiment, by switching the diversion valve 52, the seeds can be guided back to the seed box 41 at the start, end, or turn of the field, ensuring that the pipeline is full and that each sowing is accurate, avoiding seedling loss or blockage caused by unstable airflow; each seed outlet component 45 is equipped with an independent fan 46 to form an independent air path, so that even if a certain fan 46 or pipeline fails, it will not affect the sowing operation of other rows, improving reliability; the two connection methods of the seed discharge pipe 53 (through the diversion valve 52 and without the diversion valve 52) allow the system to be configured according to different agronomic requirements.

[0017] like Figure 7As shown, it also includes an airflow escape pipe 56. One end of the seed metering pipe 53 is connected to the seed guide pipe 54 through the airflow escape pipe 56, and the airflow escape pipe 56 is provided with an airflow escape hole. The airflow escape hole is used to control the gas flow. When the seed guide pipe 54 is blocked, the airflow escape pipe 56 can direct the airflow to prevent the seeds from being blocked in the seed metering pipe 53 and the seed metering unit 43 of the sowing device 4. In addition, during the air delivery sowing process, the high-speed airflow may cause the seeds to bounce and splash after hitting the bottom of the furrow or the inner wall of the seed guide pipe 54, resulting in inaccurate sowing position. In this embodiment, by depressurizing and slowing down, the seeds mainly fall into the seed guide pipe 54 under their own inertia and gravity, which reduces damage to the seeds and prevents seed splashing.

[0018] like Figure 10 , Figure 11 As shown, the diversion valve 52 includes a valve body 521, a valve 522, a servo motor 523, a first flange 524, a second flange 526, and a connecting rod 525. The servo motor 523 is mounted on the valve body 521. The output end of the servo motor 523 is hinged to one end of the first flange 524. The other end of the first flange 524 is hinged to one end of the connecting rod 525. The other end of the connecting rod 525 is hinged to one end of the second flange 526. The other end of the second flange 526 is hinged to the valve 522. The valve 522 is rotatably mounted inside the valve body 521. The servo motor 523 is used to drive the valve 522 to rotate and close the return port or the seed discharge port. During implementation, valve 522 is in the default upward position, closing the return port of diversion valve 52 and opening the seed discharge port of diversion valve 52, allowing seeds to be discharged along the discharge port. When the output shaft of control servo motor 523 rotates by a certain angle, it drives the first flange 524 to rotate, the connecting rod 525 to swing, and the second flange 526 to rotate, thereby driving valve 522 to rotate, changing the orientation of valve 522, closing the seed discharge port of diversion valve 52, and opening the return port of diversion valve 52, allowing seeds to flow back to the seed box 41 of the sowing device 4 along the return port, thus achieving diversion control. Conversely, when the output shaft of servo motor 523 rotates in the opposite direction by a certain angle, it closes the return port of diversion valve 52 and opens the seed discharge port of diversion valve 52, allowing seeds to be discharged again along the seed discharge port.

[0019] Specifically, such as Figure 5 , Figure 7 and Figure 8As shown, there are twelve seed guide tubes 54, twelve seed metering tubes 53, twelve seed metering units 43, and twelve seed dispensing components 45. There are six diversion valves 52. One end of each seed metering tube 53 is connected to a seed guide tube 54, and the other end of each of the six seed metering tubes 53 is connected to the seed dispensing port of each of the six diversion valves 52. The other end of the remaining six seed metering tubes 53 and the air inlet of each of the six diversion valves 52 are connected to the seed dispensing components 45. In this embodiment, the system has twelve sowing paths, six of which form switchable rows and six are normally open rows. This configuration uses half the number of diversion valves 52 to achieve precise sowing control, while the other half maintains continuous operation, ensuring key agronomic requirements while reducing system complexity and cost. Furthermore, the twelve-row configuration is suitable for wide-area, high-efficiency sowing. The six diversion valves 52 can centrally control the start and stop of the seedling rows in the middle area to adapt to scenarios such as field ridge turns and connections with already sown areas, avoiding double sowing or missed sowing.

[0020] Example 2 A type of pneumatic rice planter, such as Figure 1 , Figure 2 As shown, the system includes a rice transplanter chassis 1, a frame 2, a ditching and ridging device 3, a control system 7, and a rice diversion system as described in Embodiment 1. The frame 2 is connected to the rear end of the rice transplanter chassis 1, the control system 7 is communicatively connected to the rice diversion system, the rice diversion system and the ditching and ridging device 3 are connected to the frame 2, and the seed guide tube 54 is connected to the rear end of the ditching and ridging device 3. In this embodiment, by switching the diversion valve 52, seeds can be guided back to the seed box 41 at the start, end, or turn of the field, ensuring that the pipeline is full and that each sowing is accurate, avoiding seedling gaps or blockages caused by unstable airflow. Each seed outlet component 45 is equipped with an independent fan 46, forming an independent air path. Even if a fan 46 or pipeline fails, it will not affect the sowing operation of other rows, improving reliability. The two connection methods of the seed discharge pipe 53 (through the diversion valve 52 and without the diversion valve 52) allow the system to be configured according to different agronomic requirements. It can realize the one-time completion of furrowing, ridging, and precision sowing, greatly improving the efficiency of direct seeding in paddy fields. It directly utilizes the mature rice transplanter chassis 1, eliminating the need for separate development of power and walking systems, reducing the overall machine cost and promotion difficulty. The control system 7 provides unified management of the diversion system, laying the foundation for realizing intelligent functions such as variable seeding, automatic speed tracking, and operation monitoring.

[0021] like Figure 7As shown in Figure 8, the diversion device 5 also includes an adjustment frame 55, a mounting support 57, and an adjustment seat 58. The adjustment seat 58 is fixedly connected to the furrowing and ridging device 3 via the mounting support 57. The adjustment frame 55 and the adjustment seat 58 are detachably connected, and the connection position between the adjustment frame 55 and the adjustment seat 58 is adjustable. The seed guide tube 54 is installed on the adjustment frame 55. Specifically, to facilitate the adjustment of the sowing depth (height of the seed guide tube 54 from the ground) and the seed placement point to adapt to the needs of different rice varieties, soil moisture, or planting patterns, the adjustment frame 55 can be rotated. By adjusting the connection position between the adjustment frame 55 and the adjustment seat 58, the height of the seed guide tube 54 can be finely adjusted to avoid collision damage when crossing undulating ground or field ridges.

[0022] like Figure 4 As shown, the furrowing and ridging device 3 includes a base plate 32, a water ditch component 33, a seeding ditch component 34, and two mudguards 31. The two mudguards 31 are symmetrically installed on both sides of the front end of the base plate 32, and the front end of the mudguards 31 protrudes from the base plate 32. The water ditch component 33 is distributed on both sides of the bottom of the base plate 32, and the seeding ditch component 34 is distributed on the bottom of the base plate 32. The position of the seed guide tube 54 corresponds to the position of the seeding ditch component 34. The function of the furrowing and ridging device 3 is to simultaneously level the land, open seed furrows and water furrows. When the rice transplanter chassis 1 drives the furrowing and ridging device 3 through the frame 2, the mudguard 31 located at the front end of the bottom plate 32 can push away the surface mud and weeds, creating a clear working environment for subsequent furrowing. The bottom plate 32 is responsible for leveling the land. The water furrow opening component 33 is responsible for opening deeper water furrows for field management. The number and position of the seed furrow opening component 34 correspond to the seed guide tube 54, which is responsible for opening shallow and narrow medium furrows on the ridge. The seed guide tube 54 follows the seed furrow opening component 34 and guides the seeds into the opened seed hook.

[0023] like Figure 3 As shown, the frame 2 includes a main beam 22, a suspension device 21, a fixed frame 25, a main support 24, and side supports 23. The suspension device 21 is installed on the upper part of the main beam 22, the fixed frame 25 is located in the middle of the main beam 22, the main support 24 is located on the lower part of the main beam 22, and the two side supports 23 are symmetrically distributed on both sides of the main beam 22. The sowing device 4 is installed on the fixed frame 25, and the furrowing and ridging device 3 is fixedly connected to the side supports 23. Specifically, the frame 2 is connected to the three-point suspension mechanism of the rice transplanter chassis 1 through the connection holes provided in the suspension device 21. The main beam 22 bears the main tensile force and bending moment. The sowing device 4 and the furrowing and ridging device 3 can be installed on the fixed frame 25 and the side supports 23 respectively, without mutual interference, which facilitates their positioning, installation, and subsequent debugging. Moreover, the functional modules are installed at separate points to avoid stress concentration. In addition, its modular design makes the frame 2 easier to adapt to different models of rice transplanter chassis 1 or to expand its functions.

[0024] Example 3 This embodiment is similar to Embodiment 2, except that, as Figure 2 As shown, it also includes a speed measuring device 6 for measuring the travel speed of the rice transplanter chassis 1. The speed measuring device 6 is installed on the rice transplanter chassis 1 and is communicatively connected to the control system 7. Specifically, as shown... Figure 9 As shown, the speed measuring device 6 includes a mounting base 61, a speed encoder 62, a coupling 63, and an adapter sleeve 64. The adapter sleeve 64 is installed on the power output shaft of the rice transplanter chassis 1. The speed encoder 62 is fixedly installed on the mounting base 61. The coupling 63 connects the speed encoder 62 and the adapter sleeve 64. The speed encoder 62 is communicatively connected to the control system 7.

[0025] The working process of this utility model for direct seeding of rice in paddy fields is as follows: Before operation, specific operating parameters are set, including the operating width, rice variety, and seeding rate per mu, and the parameters are input into the control system 7; during operation, the suspension point at the rear of the rice transplanter chassis 1 is lowered, so that the bottom plate 32 of the ditching and ridging device 3 is pressed tightly against and flattened on the mud surface, and moves forward with the rice transplanter chassis 1. The water ditch opening component 33 and the seeding ditch opening component 34 of the ditching and ridging device 3 simultaneously open the water ditch and the seeding ditch; the speed measuring device 6 collects the rotational speed data of the power output shaft of the rice transplanter chassis 1 and inputs the data into the control system 7. The control system 7 calculates the traveling speed of the rice transplanter chassis 1 in real time based on the data. The rotational speed of the drive motor 44 of the sowing device 4 is further calculated, and the drive motor 44 is controlled to make the sowing device 4 evenly discharge seeds and match the set sowing amount in real time. At this time, the seed discharge port of the diversion valve 52 of the diversion device 5 is opened, and the seeds are discharged and sown in the seed furrow after passing through the seed guide tube 54 of the diversion device 5. In order to deal with special operating conditions, when it is necessary to adjust the number of sowing rows, the diversion valve 52 corresponding to the row to be adjusted can be controlled by the control system, the seed discharge port of the diversion valve 52 is closed, and the return port of the diversion valve 52 is opened, so that the seeds of the row to be adjusted are not sown in the field but return to the seed box 41 of the sowing device 4, thus completing the real-time adjustment of the number of sowing rows in the operation process.

[0026] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0027] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A rice paddy diversion system, characterized in that, It includes a seeding device (4) and a diversion device (5); The seeding device (4) includes a support (42) and a seed box (41), a drive motor (44), a seed metering unit (43), and a seed dispensing component (45) disposed on the support (42). The seed metering unit (43) is connected between the seed box (41) and the seed dispensing component (45). The output shaft of the drive motor (44) is connected to the seed metering unit (43) to drive the seed metering unit (43) to sow seeds. Each seed dispensing component (45) is independently provided with a fan (46) for air intake. The diversion device (5) includes a return pipe (51), a diversion valve (52), a seed discharge pipe (53), and a seed guide pipe (54). The diversion valve (52) is provided with an air inlet, a return port, and a seed discharge port. The number of seed discharge pipes (53) is the same as the number of seed outlet components (45). The air inlet of the diversion valve (52) is connected to the seed outlet component (45). The return port of the diversion valve (52) is connected to the seed box (41) through the return pipe (51). One end of the seed discharge pipe (53) is connected to the seed guide pipe (54). The other end of a portion of the seed discharge pipe (53) is connected to the seed discharge port of the diversion valve (52). The other end of the remaining seed discharge pipe (53) is connected to the seed outlet component (45).

2. The rice diversion system according to claim 1, characterized in that, It also includes an airflow escape pipe (56), one end of the seed discharge pipe (53) is connected to the seed guide pipe (54) through the airflow escape pipe (56), and the airflow escape pipe (56) is provided with an airflow escape hole.

3. The rice diversion system according to claim 1, characterized in that, The diversion valve (52) includes a valve body (521), a valve (522), a servo motor (523), a first flange (524), a second flange (526), ​​and a connecting rod (525). The servo motor (523) is installed on the valve body (521). The output end of the servo motor (523) is hinged to one end of the first flange (524). The other end of the first flange (524) is hinged to one end of the connecting rod (525). The other end of the connecting rod (525) is hinged to one end of the second flange (526). The other end of the second flange (526) is hinged to the valve (522). The valve (522) is rotatably installed inside the valve body (521). The servo motor (523) is used to drive the valve (522) to rotate and close the return port or the seed discharge port.

4. The rice diversion system according to any one of claims 1 to 3, characterized in that, The number of seed guide tubes (54), seed discharge tubes (53), seed discharge units (43), and seed outlet components (45) are all twelve, and the number of diversion valves (52) is six. One end of each seed discharge tube (53) is connected to a seed guide tube (54), and the other end of each of the six seed discharge tubes (53) is connected to a seed outlet of each of the six diversion valves (52). The other end of the remaining six seed discharge tubes (53) and the air inlet of each of the six diversion valves (52) are connected to the seed outlet components (45).

5. A pneumatic rice planter, characterized in that, The system includes a rice transplanter chassis (1), a frame (2), a ditching and ridging device (3), a control system (7), and a rice diversion system as described in any one of claims 1 to 4. The frame (2) is connected to the rear end of the rice transplanter chassis (1), the control system (7) is communicatively connected to the rice diversion system, the rice diversion system and the ditching and ridging device (3) are connected to the frame (2), and the seed guide tube (54) is connected to the rear end of the ditching and ridging device (3).

6. The pneumatic rice planter according to claim 5, characterized in that, The diversion device (5) further includes an adjustment frame (55), a mounting support (57), and an adjustment seat (58). The adjustment seat (58) is fixedly connected to the ditching and ridging device (3) through the mounting support (57). The adjustment frame (55) and the adjustment seat (58) are detachably connected. The connection position between the adjustment frame (55) and the adjustment seat (58) is adjustable. The seed guide tube (54) is installed on the adjustment frame (55).

7. The pneumatic rice planter according to claim 5, characterized in that, The furrowing and ridging device (3) includes a base plate (32), a water ditch component (33), a seeding ditch component (34), and two mudguards (31). The two mudguards (31) are symmetrically installed on both sides of the front end of the base plate (32), and the front end of the mudguards (31) protrudes from the base plate (32). The water ditch component (33) is distributed on both sides of the bottom of the base plate (32), and the seeding ditch component (34) is distributed at the bottom of the base plate (32). The position of the seed guide tube (54) corresponds to the position of the seeding ditch component (34).

8. The pneumatic rice planter according to claim 5, characterized in that, The frame (2) includes a main beam (22), a suspension device (21), a fixed frame (25), a main support (24), and side supports (23). The suspension device (21) is installed on the upper part of the main beam (22), the fixed frame (25) is located in the middle of the main beam (22), the main support (24) is located in the lower part of the main beam (22), and the two side supports (23) are symmetrically distributed on both sides of the main beam (22). The sowing device (4) is installed on the fixed frame (25), and the furrowing and ridging device (3) is fixedly connected to the side supports (23).

9. The pneumatic rice planter according to claim 5, characterized in that, It also includes a speed measuring device (6) for measuring the travel speed of the rice transplanter chassis (1), the speed measuring device (6) being installed on the rice transplanter chassis (1), and the speed measuring device (6) being communicatively connected to the control system (7).

10. The pneumatic rice planter according to claim 9, characterized in that, The speed measuring device (6) includes a mounting base (61), a speed encoder (62), a coupling (63), and an adapter sleeve (64). The adapter sleeve (64) is installed on the power output shaft of the rice transplanter chassis (1). The speed encoder (62) is fixedly installed on the mounting base (61). The coupling (63) is connected between the speed encoder (62) and the adapter sleeve (64). The speed encoder (62) is communicatively connected to the control system (7).

Images