Air-blown small-size seed metering device and seeding method

Abstract

The present application relates to an air-blown seeding device and a seeding method for small-particle seeds, and relates to the field of agricultural planting technology. The air-blown seeding device for small-particle seeds includes: a seed delivery device, a seed transport device, a seeding device, a transmission device, a housing, and a controller. The present application, through the design of an air-blown high-speed seeding scheme, can discharge small-particle seeds at high speed and precision. It is fully functional, easy to operate, economical and practical, and low in cost. During the seeding process, the seeding performance is good and efficient, and seeds can be accurately, quickly, effectively, and evenly planted in real time at high speed, providing favorable conditions for achieving high-quality seeding, reducing costs and operation time, and having good economic and social benefits.

Description

Technical Field

[0001] The present application relates to the field of agricultural planting technology, and in particular to an air-blown small-size seed metering device and a seeding method. Background Art

[0002] During the agricultural planting process, the seeder can effectively improve operating efficiency and sowing uniformity, and improve crop emergence quality and planting returns.

[0003] As the core operating component of the seeder, the seed meter changes its speed in real time according to the changes in the sowing operation speed. High-speed sowing requires that the seed meter speed changes with the vehicle speed while requiring high precision and smooth transmission. Its performance directly determines the sowing quality and crop yield.

[0004] Traditional pneumatic seeders generally use mechanical transmission methods such as chains or drive shafts. When the sowing operation speed is fast, due to the dynamic response hysteresis and vibration of the transmission system, it will cause seed adsorption failure in the edge area of ​​the seed suction plate, resulting in missed seeds. At the same time, seeds will be ejected inside the seed suction cavity, resulting in poor sowing uniformity and affected planting yields. Summary of the Invention

[0005] In order to solve or partially solve the problems existing in the related art, the present application provides an air-blown small-particle seed metering device and a seeding method, which can realize high-speed and precise discharge of small-particle seeds, with high seeding efficiency and good seeding performance.

[0006] The first aspect of the present application provides an air-blown small-size seed metering device, which includes: a seed delivery device, a seed transport device, a seed metering device, a transmission device, a housing, and a controller, wherein the seed transport device, the seed metering device, and the transmission device are arranged and installed in the housing;

[0007] The seed delivery device includes: a first fan, a branch air box and a seed delivery cylinder. The first fan is connected to the air inlet end of the branch air box through a pipeline. The top of the seed delivery cylinder is open, and the bottom of the seed delivery cylinder is a piece of wire mesh. The bottom of the seed delivery cylinder is connected to the air outlet end of the branch air box through a pipeline. By turning on the first fan to blow air, the seeds placed in the seed delivery cylinder can be blown out from the top of the seed delivery cylinder.

[0008] The transport device includes: a negative pressure gas disc, a negative pressure pipeline, a transport disc, a transport pipe and a transmission shaft. The negative pressure gas disc is provided with a negative pressure slot and a negative pressure partition. The negative pressure pipeline is connected to the top of the negative pressure gas disc. The transmission shaft is vertically installed in the shell. The transport disc is fixedly installed on the transmission shaft. Several transport-shaped holes are provided on the circumference of the transport disc. The transport pipe is installed below the transport disc.

[0009] The seeding device includes: a driving motor, a seeding base, a seeding fan disc, a seeding pipe and a second fan. The driving motor is vertically fixedly installed at the bottom of the housing, the seeding base is fixedly installed on the top of the driving motor, and the seeding fan disc is arranged and installed in the seeding base and fixedly connected to the driving shaft of the driving motor. The driving motor drives the seeding fan disc to move in the seeding base.

[0010] The top of the seeding base is connected to the seeding pipe, the bottom of the seeding base is provided with a seeding hole, the seeding pipe is installed below the seeding hole, the air outlet end of the second fan is connected to the seeding pipe through a pipe, the air inlet end of the second fan is connected to the negative pressure pipe, and the negative pressure disc generates negative pressure by driving the second fan;

[0011] The transmission device includes: a driving wheel, a transmission belt and a driven wheel. The driving wheel is fixedly mounted on the driving shaft of the driving motor, and the driven wheel is fixed on the transmission shaft. The transmission belt is connected between the driving wheel and the driven wheel. The driving motor drives the driving shaft to rotate, and the transmission shaft can be driven by the transmission device to rotate.

[0012] The controller establishes electrical connections with the first fan, the drive motor and the second fan respectively.

[0013] Optionally, in some embodiments of the first aspect:

[0014] The air distribution box is provided with a first air outlet pipe and a second air outlet pipe, and a first solenoid valve and a second solenoid valve are respectively provided on the first air outlet pipe and the second air outlet pipe;

[0015] The air outlet end of the first air outlet pipe is connected to the bottom of the seed delivery cylinder through a pipeline;

[0016] The seed delivery device further comprises: a seed blowing pipe, the air outlet of the seed blowing pipe being correspondingly arranged at the outlet of the seed delivery cylinder;

[0017] The air outlet end of the second air outlet pipe is connected to the seed blowing pipe through a pipeline;

[0018] The controller is electrically connected to the first solenoid valve and the second solenoid valve respectively.

[0019] Optionally, in some embodiments of the first aspect:

[0020] The seed meter also includes: a carbon powder cartridge;

[0021] The carbon powder box is installed in the shell, and the powder outlet end of the carbon powder box is connected with the seed discharging pipe through a pipe.

[0022] Optionally, in some embodiments of the first aspect:

[0023] A seeding cover is provided on the top of the seeding base, and a seeding interface is provided on the seeding cover;

[0024] The seeding interface is connected to the seed transport pipe.

[0025] Optionally, in some embodiments of the first aspect:

[0026] A seed baffle is correspondingly provided at the bottom of the transport hole. The internal volume of the seed baffle is set according to the volume of a conventional seed and can only accommodate one seed.

[0027] Optionally, in some embodiments of the first aspect:

[0028] A seed detection sensor is provided at the bottom of the seeding base, and the seed detection sensor is correspondingly provided at a position below the seeding interface;

[0029] An electrical connection is established between the controller and the seed detection sensor.

[0030] Optionally, in some embodiments of the first aspect:

[0031] The transmission shaft in the housing is fixed in position by an upper limit transmission bearing hole and a lower limit transmission bearing hole;

[0032] The driving shaft of the driving motor in the housing is limited and fixed by an upper limit driving bearing hole.

[0033] Optionally, in some embodiments of the first aspect:

[0034] The shell is provided with a seeding pipe hole;

[0035] The outlet of the seeding pipe is limited and fixed by the seeding pipe hole.

[0036] A second aspect of the present application provides an air-blowing small-size seeding method, which is applicable to the seeding device in the first aspect, and comprises:

[0037] S1: Control the first fan to supply air to the air box, and control the first solenoid valve to open and the second solenoid valve to close, so that the first air outlet pipe can discharge air. At this time, the seeds in the seed delivery cylinder will be suspended in the seed delivery cylinder under the influence of the air flow and will be in a boiling state. A small amount of seeds will be suspended to the top opening of the seed delivery cylinder.

[0038] S2: Control and drive the second fan to generate negative pressure in the negative pressure air disk through the negative pressure pipe. The negative pressure generated on the lower surface of the seed tray adsorbs the seeds in the seed holes;

[0039] S3: Control the first solenoid valve to close and the second solenoid valve to open, so that the second air outlet pipe can discharge air, so that the seed blowing pipe can blow air to blow off the excess seeds adsorbed in the seeding hole;

[0040] S4: Control the driving motor to rotate, and drive the transmission shaft to rotate under the action of the transmission device. The seed transport disk is driven to rotate, and the seed transport hole is turned to the position of the seed transport pipe. At this time, the seed transport hole is just blocked by the negative pressure partition, and the negative pressure disappears. The seeds in the seed transport hole fall into the seed transport pipe under the action of their own gravity, and are sent to the seeding fan disc through the seeding pipe. Under the action of the driving shaft, the seeding fan disc rotates and drives the seeds to move at the same time. When the seeds move to the position of the seeding hole, the seeds fall into the seeding pipe due to gravity.

[0041] Optionally, in some embodiments of the second aspect:

[0042] The seeding method further includes: when the seed detection sensor detects that there are no seeds in the seeding fan disc, controlling the driving motor to increase the rotation speed to prevent missed seeding.

[0043] The technical solution provided by this application may have the following beneficial effects:

[0044] The present application provides a seed delivery device, which can supply air to the seed delivery cylinder and the seed blowing tube respectively through the first fan, so that the seeds in the seed delivery cylinder are in a boiling state when the air is supplied, and the suspension height of a small amount of seeds reaches the top hole position of the seed delivery cylinder; by providing a seed transport device, negative pressure can be generated by the negative pressure air disk, and the seed transport hole can adsorb and transport the seeds at the top hole position of the seed delivery cylinder, and the seeds in the seed transport hole fall into the seed transport tube for transportation; by providing a seed discharge device, the seeds transported through the seed discharge tube fall into the seed discharge base through the seed discharge interface, the seed discharge fan disc is driven to rotate by the driving motor, and under the blowing action of the second fan, the seeds are discharged through the seed discharge pipe.

[0045] This application provides an air-blown small-size seed metering device. This device, through its air-blown high-speed seeding design, is capable of discharging small-size seeds at high speed and precision. It is fully functional, easy to operate, economical, and inexpensive. During the seeding process, it exhibits excellent seeding performance and high efficiency, accurately, quickly, and effectively discharging seeds evenly and at high speed in real time. This device facilitates high-quality seeding, reduces costs and operating time, and offers excellent economic and social benefits.

[0046] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The above and other objects, features and advantages of the present application will become more apparent through a more detailed description of exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

[0048] Figure 1 This is a structural diagram of an air-blown small-size seed metering device according to an embodiment of the present application;

[0049] Figure 2 This is a structural diagram of a seed delivery device in an embodiment of the present application;

[0050] Figure 3 This is a schematic diagram of the internal pipeline structure of the wind box in the embodiment of the present application;

[0051] Figure 4 This is a rear structural schematic diagram of a seed transport device and a seed metering device in an embodiment of the present application;

[0052] Figure 5 This is a front structural diagram of a seed transport device and a seed metering device in an embodiment of the present application;

[0053] Figure 6 This is a structural diagram of a seed metering device in an embodiment of the present application;

[0054] Figure 7 This is a schematic diagram of the installation structure of the seeding fan disc in the embodiment of the present application;

[0055] Figure 8 This is a schematic diagram of the bottom structure of the seeding base in the embodiment of the present application;

[0056] Figure 9 This is a schematic structural diagram of the device in the embodiment of the present application;

[0057] Figure 10 This is a schematic diagram of the bottom structure of the tray in the embodiment of the present application;

[0058] Figure 11 This is a structural diagram of the wind pressure gas disk in the embodiment of the present application;

[0059] Figure 12 This is a schematic structural diagram of a transmission device in an embodiment of the present application;

[0060] Figure 13 It is a structural schematic diagram of the shell in the embodiment of the present application.

[0061] Reference numerals:

[0062] 1- seeding device, 101- seeding cover, 1011- seeding interface, 1012- seeding fan disc, 1013- seeding base, 1014- seeding hole, 1015- seed detection sensor, 102- drive shaft, 103- second fan, 104- toner cartridge, 105- seeding pipe, 106- drive motor;

[0063] 2- transmission device, 201- driving wheel, 202- transmission belt, 203- driven wheel;

[0064] 3-transportation device, 301-negative pressure air disc, 3011-negative pressure partition, 3012-negative pressure slot, 302-exhaust duct, 303-transportation pipe, 304-transportation disc, 3041-transportation hole, 3042-transportation baffle, 305-transmission shaft;

[0065] 4-housing, 401-drive shaft limit bearing hole, 402-transmission shaft upper limit bearing hole, 403-seed pipe through hole, 404-transmission shaft lower limit bearing hole;

[0066] 5-seed delivery device, 501-first fan, 502-air box, 5021-first solenoid valve, 5022-second solenoid valve, 503-seed delivery cylinder, 5031-wire screen, 504-seed blowing tube;

[0067] 6-Controller. DETAILED DESCRIPTION

[0068] The following describes embodiments of the present application in more detail with reference to the accompanying drawings. Although the accompanying drawings illustrate embodiments of the present application, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0069] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0070] In the description of this application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0071] Unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0072] As the core operating component of the seeder, the seed meter changes its speed in real time according to the changes in the sowing operation speed. High-speed sowing requires that the seed meter speed changes with the vehicle speed while requiring high precision and smooth transmission. Its performance directly determines the sowing quality and crop yield.

[0073] Conventional pneumatic seeders generally use mechanical transmission methods such as chains or drive shafts 305. When the sowing operation speed is fast, due to the dynamic response hysteresis and vibration of the transmission system, seed adsorption failure in the edge area of ​​the seed suction plate may occur, resulting in missed sowing. At the same time, seeds may be ejected from the inside of the seed suction cavity, resulting in poor sowing uniformity and affected planting yields.

[0074] In response to the above problems, the embodiments of the present application provide an air-blown small-size seed metering device and a seeding method, which can achieve high-speed and precise discharge of small-size seeds with high seeding efficiency and good seeding performance.

[0075] The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0076] See also Figures 1-13 , an air-blown small-particle seed metering device, which includes: a seed delivery device 5, a seed transport device 3, a seed metering device 1, a transmission device 2, a shell 4 and a controller 6, and the seed transport device 3, the seed metering device 1 and the transmission device 2 are arranged and installed in the shell 4.

[0077] The seed delivery device 5 includes: a first fan 501, a branch air box 502, and a seed delivery cylinder 503. The first fan 501 is connected to the air inlet end of the branch air box 502 via a pipe. The top of the seed delivery cylinder 503 is open, and the bottom of the seed delivery cylinder 503 is a wire mesh 5031. The bottom of the seed delivery cylinder 503 is connected to the air outlet end of the branch air box 502 via a pipe. By connecting the first fan 501 to blow air, the seeds placed in the seed delivery cylinder 503 can be blown out from the top of the seed delivery cylinder 503. The wire mesh 5031 is a wire mesh 5031, and the minimum mesh diameter of the wire mesh 5031 is smaller than the minimum diameter of the seeds.

[0078] Specifically, the air distribution box 502 is provided with a first air outlet pipe and a second air outlet pipe, and a first solenoid valve 5021 and a second solenoid valve 5022 are respectively provided on the first air outlet pipe and the second air outlet pipe; the air outlet end of the first air outlet pipe is connected to the bottom of the seed delivery cylinder 503 through a pipeline.

[0079] The seed delivery device 5 further comprises: a seed blowing pipe 504 , the air outlet of the seed blowing pipe 504 being correspondingly arranged at the outlet of the seed delivery cylinder 503 ; the air outlet end of the second air outlet pipe is connected to the seed blowing pipe 504 through a pipeline.

[0080] The controller 6 establishes electrical connections with the first solenoid valve 5021 and the second solenoid valve 5022 respectively.

[0081] In this embodiment, by providing a first air outlet pipe and a second air outlet pipe in the air distribution box 502, air can be supplied to the seed delivery barrel 503 and the seed blowing pipe 504 respectively through the first fan 501. By providing a first solenoid valve 5021 and a second solenoid valve 5022 on the first air outlet pipe and the second air outlet pipe respectively, the on-off and air supply size of the first air outlet pipe can be controlled to better control the seeds in the seed delivery barrel 503, so that the seeds in the seed delivery barrel 503 are in a boiling state when air is supplied, and the suspension height of a small amount of seeds reaches the top orifice position of the seed delivery barrel 503. At the same time, the on-off and air supply size of the second air outlet pipe can be controlled to achieve spraying at the top orifice of the seed delivery barrel 503 and blow off excess seeds.

[0082] The transport device 3 includes: a negative pressure gas disc 301, a negative pressure pipeline, a transport disc 304, a transport tube 303 and a transmission shaft 305. The negative pressure gas disc 301 is provided with a negative pressure slot 3012 and a negative pressure partition 3011. The negative pressure pipeline is connected to the top of the negative pressure gas disc 301. The transmission shaft 305 is vertically installed in the shell 4. The transport disc 304 is fixedly installed on the transmission shaft 305. Several transport-shaped holes 3041 are provided on the circumference of the transport disc 304. The transport tube 303 is installed at the lower position of the transport disc 304. The negative pressure air disc 301 is a hollow circular disc with the same diameter as the seed transport disc 304. A negative pressure baffle 3011 is installed on one side of the negative pressure air disc 301, and a negative pressure slot 3012 on the other side is connected to the exhaust duct 302 of the second fan 103 in the seeding device 1 to generate negative pressure in the negative pressure air disc 301. The seed transport disc 304 is installed above the seed blowing pipe 504.

[0083] Specifically, a seed baffle 3042 is provided at the bottom of the transport hole 3041. The internal volume of the seed baffle 3042 is set according to the volume of a conventional seed and can only accommodate one seed. The diameter of the transport hole 3041 is smaller than the minimum diameter of the target seed.

[0084] In this embodiment, negative pressure is generated by providing a negative pressure air disc 301, and the seed-carrying holes 3041 located below the negative pressure slot 3012 can generate negative pressure. When the transmission shaft 305 drives the seed-carrying disc 304 to rotate, the seed-carrying holes 3041 can absorb and transport the seeds at the top opening of the seed delivery barrel 503. When the seed-carrying holes 3041 rotate to a position below the negative pressure baffle 3011, the negative pressure disappears, and the seeds in the seed-carrying holes 3041 fall into the seed-carrying tube 303 for transportation. The present application further ensures the seed-carrying effect by providing a seed-carrying baffle 3042. At the same time, by cooperating with the seed-blowing tube 504, each seed-carrying hole 3041 can only absorb one seed at a time, so that the seeds can be discharged in a stable, single-grain manner.

[0085] The seeding device 1 includes: a drive motor 106, a seeding base 1013, a seeding fan disc 1012, a seeding pipe 105 and a second fan 103. The drive motor 106 is vertically fixedly installed at the bottom of the housing 4, the seeding base 1013 is fixedly installed on the top of the drive motor 106, and the seeding fan disc 1012 is arranged and installed in the seeding base 1013 and fixedly connected to the drive shaft 102 of the drive motor 106. The drive motor 106 drives the seeding fan disc 1012 to move in the seeding base 1013;

[0086] The top of the seeding base 1013 is connected to the seed transport tube 303, and the bottom of the seeding base 1013 is provided with a seeding hole 1014. The seeding pipe 105 is installed below the seeding hole 1014. The air outlet end of the second fan 103 is connected to the seeding pipe 105 through a pipe, and the air inlet end of the second fan 103 is connected to the negative pressure pipe. By driving the second fan 103, the negative pressure air disk 301 generates negative pressure.

[0087] Specifically, a seeding cover plate 101 is provided on the top of the seeding base 1013 , and a seeding interface 1011 is provided on the seeding cover plate 101 ; the seeding interface 1011 is communicated with the seed transport pipe 303 .

[0088] In this embodiment, by connecting the top of the seeding base 1013 with the seeding tube 303 of the seeding device 3, the seeds transported through the seeding tube 303 fall into the seeding base 1013 through the seeding interface 1011. When the driving motor 106 drives the seeding fan disc 1012 to rotate, the seeding fan disc 1012 pushes the seeds to the seeding hole 1014, and then the seeds fall into the seeding pipe 105 and are discharged through the seeding pipe 105 under the blowing action of the second fan 103.

[0089] Specifically, a seed detection sensor 1015 is provided at the bottom of the seeding base 1013, and the seed detection sensor 1015 is correspondingly provided below the seeding interface 1011. An electrical connection is established between the controller 6 and the seed detection sensor 1015. The seed detection sensor 1015 is a photoelectric detection sensor.

[0090] In this embodiment, by setting up a seed detection sensor 1015, the seed delivery situation can be detected. When the seed detection sensor 1015 detects that there are no seeds, the driving motor 106 is controlled to increase the rotation speed to prevent missed seeds.

[0091] Specifically, a seeding pipe 105 hole is provided on the shell 4 ; the outlet of the seeding pipe 105 is limited and fixed by the seeding pipe 105 hole.

[0092] Specifically: the transmission shaft 305 in the housing 4 is fixed by the upper limit transmission shaft 305 bearing hole and the lower limit transmission shaft 305 bearing hole; the driving shaft 102 of the driving motor 106 in the housing 4 is fixed by the upper limit drive shaft 102 bearing hole.

[0093] In this embodiment, by fixing the transmission shaft 305 and the drive shaft 102 of the drive motor 106 in the housing 4, the installation stability of the structure can be improved and the normal operation of the device can be guaranteed.

[0094] The transmission device 2 includes: a driving wheel 201, a transmission belt 202 and a driven wheel 203. The driving wheel 201 is fixedly mounted on the driving shaft 102 of the driving motor 106, and the driven wheel 203 is fixed on the transmission shaft 305. The transmission belt 202 is connected between the driving wheel 201 and the driven wheel 203. The driving motor 106 drives the driving shaft 102 to rotate, so that the transmission shaft 305 can rotate under the transmission of the transmission device 2.

[0095] In this embodiment, by providing a transmission device 2 and transmitting through a transmission belt 202, the transmission is stable, fast, and has low vibration, which can effectively ensure the normal operation of the seed metering device and improve the efficiency of sowing.

[0096] Specifically, the seed metering device further includes a carbon powder box 104 ; the carbon powder box 104 is installed in the housing 4 , and a powder outlet end of the carbon powder box 104 is connected to the seed metering pipe 105 through a pipe.

[0097] In this embodiment, by setting up a carbon powder box 104, the carbon powder box 104 allows a small amount of carbon powder to enter the seed dispensing pipe 105 under the negative pressure of the second fan 103 and be mixed and wrapped with the seeds, thereby increasing the fluidity of the seeds and reducing the surface friction coefficient. Subsequently, the carbon powder entrains the seeds and is discharged individually under the action of the airflow, thereby effectively improving the sowing quality.

[0098] The controller 6 is electrically connected to the first fan 501 , the drive motor 106 and the second fan 103 . The controller 6 is a PLC controller 6 or a single chip microcomputer controller 6 , and is installed on the top of the air distribution box 502 .

[0099] In this embodiment, the controller 6 performs unified control to ensure the operational stability of the seed metering device.

[0100] Corresponding to the aforementioned embodiment of the device for realizing application functions, the present application also provides an air-blown small-size seed sowing method and corresponding embodiments.

[0101] See also Figure 2 A method for air-blowing small-size seeds for sowing is provided, which is applicable to the seed-seeding device in the above-mentioned specific embodiment, and comprises:

[0102] S1: Control and drive the first fan 501 to supply air to the air box 502, and control the first solenoid valve 5021 to open and the second solenoid valve 5022 to close, so that the first air outlet pipe can discharge air. At this time, the seeds in the seed delivery cylinder 503 are affected by the air flow and are suspended in the seed delivery cylinder 503 in a boiling state. The suspended height of a small amount of seeds reaches the top opening position of the seed delivery cylinder 503;

[0103] S2: Control and drive the second fan 103 to generate negative pressure in the negative pressure air disc 301 through the negative pressure pipe. The negative pressure generated on the lower surface of the seed tray 304 adsorbs the seeds in the seed-shaped holes 3041;

[0104] S3: Control the first solenoid valve 5021 to close and the second solenoid valve 5022 to open, so that the second air outlet pipe can blow air, and the seed blowing pipe 504 can blow air to blow off the excess seeds adsorbed in the seeding hole 3041;

[0105] S4: Control the drive motor 106 to rotate, and drive the transmission shaft 305 to rotate under the action of the transmission device 2, and the seed transport disk 304 is driven to rotate, and the seed transport hole 3041 is turned to the position of the seed transport tube 303. At this time, the seed transport hole 3041 is just blocked by the negative pressure partition 3011, and the negative pressure disappears. The seeds in the seed transport hole 3041 fall into the seed transport tube 303 under the action of their own gravity, and are sent to the seeding fan disk 1012 through the seeding tube 303. Under the action of the drive shaft 102, the seeding fan disk 1012 rotates and drives the seeds to move at the same time. When the seeds move to the position of the seeding hole 1014, the seeds fall into the seeding pipe 105 due to gravity.

[0106] Specifically, when the seed detection sensor 1015 detects that there are no seeds in the seed-disc 1012 , the drive motor 106 is controlled to increase the rotation speed to prevent missed seeds.

[0107] In this embodiment, the air-blown small-size seed sowing method can accurately, quickly, effectively and evenly sow seeds at high speed in real time, providing favorable conditions for achieving high-quality sowing, reducing costs and operation time, and improving work efficiency.

[0108] The technical solutions in the embodiments of the present application include the following beneficial effects:

[0109] By setting up a seed delivery device 5, the present application can supply air to the seed delivery cylinder 503 and the seed blowing tube 504 respectively through the first fan 501, so that the seeds in the seed delivery cylinder 503 are in a boiling state when the air is supplied, and the suspension height of a small amount of seeds reaches the top orifice position of the seed delivery cylinder 503; by setting up a seed transport device 3, negative pressure can be generated by the negative pressure air disc 301, and the seed transport hole 3041 can adsorb and transport the seeds at the top orifice position of the seed delivery cylinder 503, and the seeds in the seed transport hole 3041 fall into the seed transport tube 303 for transportation; by setting up a seeding device 1, the seeds transported through the seed transport tube 303 fall into the seeding base 1013 through the seeding interface 1011, and the seeding fan disc 1012 is driven to rotate by the driving motor 106, and under the blowing action of the second fan 103, the seeds are discharged through the seeding pipe 105.

[0110] This application provides an air-blown small-size seed metering device. This device, through its air-blown high-speed seeding design, is capable of discharging small-size seeds at high speed and precision. It is fully functional, easy to operate, economical, and inexpensive. During the seeding process, it exhibits excellent seeding performance and high efficiency, accurately, quickly, and effectively discharging seeds evenly and at high speed in real time. This device facilitates high-quality seeding, reduces costs and operating time, and offers excellent economic and social benefits.

[0111] Finally, it should be noted that, in this document, relationships such as first and second, etc., are used solely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms include, comprise, or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0112] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0113] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0114] The embodiments of the present application have been described above. The above description is illustrative and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or improvements to the technology in the market, or to enable other persons skilled in the art to understand the embodiments disclosed herein.

Claims

1. A method for planting small-size seeds with air blowing, characterized in that: The seeding method comprises: S1: Controlling and driving the first fan (501) to supply air to the air box (502), and controlling the first solenoid valve (5021) to open and the second solenoid valve (5022) to close, so that the first air outlet pipe can discharge air. At this time, the seeds in the seed delivery cylinder (503) are affected by the air flow and are suspended in the seed delivery cylinder (503) in a boiling state. The suspended height of a small amount of seeds reaches the top opening position of the seed delivery cylinder (503); S2: Control and drive the second fan (103) to generate negative pressure in the negative pressure air disc (301) through the negative pressure pipe, and the lower surface of the seed transport disc (304) adsorbs the seeds in the seed transport holes (3041) through the generated negative pressure; S3: Control the first solenoid valve (5021) to close and the second solenoid valve (5022) to open, so that the second air outlet pipe can discharge air, and the seed blowing pipe (504) can blow air to blow off the excess seeds adsorbed in the seeding hole (3041); S4: Control the driving motor (106) to rotate, and drive the transmission shaft (305) to rotate under the action of the transmission device (2), and the seed transport disc (304) is driven to rotate, and the seed transport hole (3041) is moved to the position of the seed transport tube (303). At this time, the seed transport hole (3041) is just blocked by the negative pressure partition (3011), and the negative pressure disappears. The seeds in the seed transport hole (3041) fall into the seed transport tube (303) under the action of their own gravity, and are sent to the seeding fan disc (1012) through the seeding tube (303). Under the action of the driving shaft (102), the seeding fan disc (1012) rotates and drives the seeds to move at the same time. When the seeds move to the position of the seeding hole (1014), the seeds fall into the seeding tube (105) due to the action of gravity; When the seed detection sensor (1015) detects that there are no seeds in the seeding fan disc (1012), the driving motor (106) is controlled to increase the rotation speed to prevent missed seeding.

2. An air-blown seed metering device for small-size seeds, the seed metering device being suitable for the seeding method as claimed in claim 1, characterized in that: The seed metering device comprises: a seed delivery device (5), a seed transport device (3), a seed metering device (1), a transmission device (2), a housing (4) and a controller (6); the seed transport device (3), the seed metering device (1) and the transmission device (2) are arranged and installed in the housing (4); The seed delivery device (5) comprises: a first fan (501), a branch air box (502) and a seed delivery cylinder (503); the first fan (501) is connected to the air inlet end of the branch air box (502) through a pipeline; the top of the seed delivery cylinder (503) is opened, the bottom of the seed delivery cylinder (503) is a wire mesh (5031); the bottom of the seed delivery cylinder (503) is connected to the air outlet end of the branch air box (502) through a pipeline; by connecting the first fan (501) to blow air, the seeds placed in the seed delivery cylinder (503) can be blown out from the top of the seed delivery cylinder (503); The seeding device (3) comprises: a negative pressure gas disc (301), a negative pressure pipeline, a seeding disc (304), a seeding tube (303) and a transmission shaft (305); the negative pressure gas disc (301) is provided with a negative pressure slot hole (3012) and a negative pressure partition (3011); the negative pressure pipeline is connected to the top of the negative pressure gas disc (301); the transmission shaft (305) is vertically installed in the housing (4); the seeding disc (304) is fixedly installed on the transmission shaft (305); a plurality of seeding-shaped holes (3041) are provided on the circumference of the seeding disc (304); and the seeding tube (303) is arranged and installed at a position below the seeding disc (304); The seeding device (1) comprises: a driving motor (106), a seeding base (1013), a seeding fan disc (1012), a seeding pipe (105) and a second fan (103); the driving motor (106) is vertically fixedly installed at the bottom of the housing (4); the seeding base (1013) is fixedly installed at the top of the driving motor (106); the seeding fan disc (1012) is arranged and installed in the seeding base (1013) and is fixedly connected to the driving shaft (102) of the driving motor (106); and the seeding fan disc (1012) is driven by the driving motor (106) to move in the seeding base (1013); The top of the seeding base (1013) is connected to the seed transport tube (303), and the bottom of the seeding base (1013) is provided with a seeding hole (1014). The seeding pipe (105) is installed below the seeding hole (1014). The air outlet of the second fan (103) is connected to the seeding pipe (105) through a pipe, and the air inlet of the second fan (103) is connected to the negative pressure pipe. By driving the second fan (103), the negative pressure air disc (301) generates negative pressure. The transmission device (2) comprises: a driving wheel (201), a transmission belt (202) and a driven wheel (203); the driving wheel (201) is fixedly mounted on a driving shaft (102) of a driving motor (106); the driven wheel (203) is fixed on a transmission shaft (305); the transmission belt (202) is connected to the driving wheel (201) and the driven wheel (203); the driving motor (106) drives the driving shaft (102) to rotate, and the transmission shaft (305) can be driven to rotate by the transmission device (2); The controller (6) establishes electrical connections with the first fan (501), the drive motor (106) and the second fan (103) respectively.

3. The air-blown small-size seed metering device according to claim 2, characterized in that: The air distribution box (502) is provided with a first air outlet pipe and a second air outlet pipe, and the first air outlet pipe and the second air outlet pipe are respectively provided with a first solenoid valve (5021) and a second solenoid valve (5022); The air outlet end of the first air outlet pipe is connected to the bottom of the seed delivery cylinder (503) through a pipeline; The seed delivery device (5) further comprises: a seed blowing pipe (504), wherein the air outlet of the seed blowing pipe (504) is correspondingly arranged at the outlet of the seed delivery cylinder (503); The air outlet end of the second air outlet pipe is connected to the seed blowing pipe (504) through a pipeline; The controller (6) is electrically connected to the first solenoid valve (5021) and the second solenoid valve (5022).

4. The air-blowing seed metering device for small-size seeds according to claim 3, characterized in that: The seed metering device further includes: a carbon powder box (104); The carbon powder box (104) is installed in the housing (4), and the powder outlet end of the carbon powder box (104) is connected to the seed discharging pipe (105) through a pipe.

5. The air-blowing small-size seed metering device according to claim 4, characterized in that: A seeding cover plate (101) is provided on the top of the seeding base (1013), and a seeding interface (1011) is provided on the seeding cover plate (101); The seeding interface (1011) is connected to the seed transport pipe (303).

6. The air-blowing seed metering device for small-size seeds according to claim 5, characterized in that: A seed transport baffle (3042) is correspondingly provided at the bottom of the seed transport hole (3041), and the internal volume of the seed transport baffle (3042) is set according to the volume of a conventional seed and can only accommodate one seed.

7. The air-blowing seed metering device for small-size seeds according to claim 6, characterized in that: A seed detection sensor (1015) is provided at the bottom of the seeding base (1013), and the seed detection sensor (1015) is correspondingly provided at a position below the seeding interface (1011); An electrical connection is established between the controller (6) and the seed detection sensor (1015).

8. The air-blowing small-size seed metering device according to claim 2, characterized in that: The transmission shaft (305) in the housing (4) is fixed in position by means of an upper limit transmission shaft (305) bearing hole and a lower limit transmission shaft (305) bearing hole; The drive shaft (102) of the drive motor (106) in the housing (4) is fixed in a limited position via an upper limit drive shaft (102) bearing hole.

9. The air-blowing small-size seed metering device according to claim 8, characterized in that: The shell (4) is provided with a seeding pipe (105) hole; The outlet of the seeding pipe (105) is fixed by a hole in the seeding pipe (105).

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