Air-suction type seed hash-metering device

Abstract

The utility model discloses an air-aspiration type seed hashing seed-metering device, which belongs to the technical field of seed-metering devices, and comprises a seed-metering disc, air-aspiration type seed-metering needles and a vibration disc, seed-metering ports capable of being opened and closed are arranged on the disc surface of the seed-metering disc, the seed-metering ports are arranged in a matrix, the column direction of the seed-metering ports is parallel to the moving direction of the seed-metering disc, and the vibration disc is arranged on the air-aspiration type seed-metering needles. The seed discharging direction of the seed discharging opening is perpendicular to the moving direction of the seed discharging disc, the air-suction type seed discharging needles are arranged in rows and swing in a reciprocating mode in the moving direction of the seed discharging disc through the swing mechanism, and the vibration disc is located between the air-suction type seed discharging needles and the seed discharging disc in the height position. The vibration disc is located in the vertical projection of the swing path of the air-suction type seed metering needle in the horizontal position, and a preset height difference capable of sucking up seeds is formed between the vibration disc and the air-suction type seed metering needle. Through uniform dispersion of the vibration disc and rapid suction of the air suction type seed metering needle, the seed suction precision is remarkably improved, then the seed metering speed is increased, and the overall operation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of seed metering devices, in particular to a pneumatic seed hash metering device. Background Art

[0002] In the agricultural field, batch hashing of seeds is an important operation. Traditional seed hashing methods usually rely on manual operation, which is time-consuming and laborious and prone to uneven hashing problems. To improve planting efficiency and reduce labor costs, some automated seed hashing devices have been introduced. Currently, common automated seed hashing equipment mainly includes mechanical seed hashing devices, pneumatic seed hashing devices, pneumatic suction seed hashing devices, etc. The mechanical seed hashing device sorts seeds by physical shape. Although it can improve the sowing speed, the non-uniformity of seed shape and size limits its accuracy. The pneumatic seed hashing device utilizes the pressure of air flow to achieve seed sorting and discharging. However, when dealing with small or light seeds, it is easily affected by wind speed and seed physical properties, resulting in unstable hashing effects. The pneumatic suction seed hashing device utilizes the suction of air flow. The pneumatic suction hashing needle can accurately suck single seeds to achieve single-seed sorting and discharging of seeds. Compared with mechanical and pneumatic types, it has higher hashing accuracy. However, since seeds are prone to aggregation or tumbling when supplied to the sowing device, it is difficult for the pneumatic suction hashing needle to accurately correspond to each seed, thereby affecting the uniformity, accuracy, and efficiency of sowing. Summary of the Utility Model

[0003] The purpose of the utility model is to solve the above technical problems and provide a pneumatic seed hash metering device. Under the vibration of the vibrating disk, seeds can continuously and slightly jump, so that the seeds are evenly dispersed in the vibrating disk instead of being concentrated in a certain place, thereby increasing the probability of the pneumatic suction metering needle sucking seeds, significantly improving the sucking speed of the pneumatic suction metering needle, ultimately increasing the speed of seed metering, and enhancing the overall operation efficiency.

[0004] To achieve the above object, the present utility model provides the following solutions: The present utility model discloses a pneumatic suction type seed hash metering device, which includes a metering disc capable of moving linearly in the horizontal direction, pneumatic suction type metering needles with adjustable suction force, and a vibrating disc for holding seeds. The surface of the metering disc is horizontally arranged, and the metering disc is provided with openable and closable metering openings. The metering openings are arranged in a matrix. The direction of the columns of the metering openings is parallel to the moving direction of the metering disc, and the direction of the rows of the metering openings is perpendicular to the moving direction of the metering disc. The pneumatic suction type metering needles are arranged in rows, and the row direction of the pneumatic suction type metering needles is the same as the row direction of the metering openings. The number of single-row pneumatic suction type metering needles corresponds to the number of single-row metering openings. The pneumatic suction type metering needles reciprocally swing along the moving direction of the metering disc through a swinging mechanism. The vertical projection of the swinging path of the pneumatic suction type metering needles is located on the moving path of the corresponding metering openings. The vibrating disc is located between the pneumatic suction type metering needles and the metering disc in the height position, and the vibrating disc is located within the vertical projection of the swinging path of the pneumatic suction type metering needles in the horizontal position. There is a preset height difference between the vibrating disc and the pneumatic suction type metering needles that enables the seeds to be sucked up.

[0005] Preferably, a seed guiding tube is provided between the metering disc and the pneumatic suction type metering needles. The seed guiding tubes are arranged in rows, and the row direction of the seed guiding tubes is the same as the row direction of the pneumatic suction type metering needles. The number of the seed guiding tubes corresponds to the number of the pneumatic suction type metering needles. One end of the seed guiding tube has an upward-facing pipe opening provided with a seed inlet notch. The seed inlet notch faces the pneumatic suction type metering needles and is located on the swinging path of the pneumatic suction type metering needles. The other end of the seed guiding tube has a tapered pipe opening and is downward-facing. The vertical projection of the tapered pipe opening is located on the moving path of the metering openings.

[0006] Preferably, it includes a device stand and a pneumatic needle mounting member for mounting the pneumatic suction type metering needles. The pneumatic needle mounting member is rotatably connected to the device stand through a rotating shaft. The axis of the rotating shaft is parallel to the row direction of the pneumatic suction type metering needles. The device stand is provided with a moving space for the metering disc to pass through.

[0007] Preferably, the swinging mechanism includes a telescopic cylinder and a connecting rod. The cylinder body of the telescopic cylinder is hinged to the device stand, the piston rod of the telescopic cylinder is hinged to one end of the connecting rod, and the other end of the connecting rod is fixedly connected to the end of the rotating shaft.

[0008] Preferably, the device stand is provided with an installation cross beam with adjustable height, and the seed guiding tubes are fixedly installed on the installation cross beam.

[0009] Preferably, a first elongated hole is vertically provided on the installation cross beam, a first adjusting bolt is provided on the device vertical frame, and the first adjusting bolt passes through the first elongated hole and is locked by a nut.

[0010] Preferably, two installation cross plates are provided on the device vertical frame. Installation heads are provided at one ends of the two installation cross plates facing each other. A second elongated hole is vertically provided on the installation heads. Second adjusting bolts are provided at both ends of the vibrating disk. The second adjusting bolts pass through the second elongated holes and are locked by nuts. A vibrating device is installed at the bottom of the vibrating disk.

[0011] Preferably, an adjusting head is provided on the installation cross plate. A bolt hole for a third adjusting bolt to pass through is provided on the adjusting head. A third elongated hole is vertically provided on the device vertical frame. The third adjusting bolt passes through the bolt hole and the third elongated hole and is locked by a nut.

[0012] Preferably, the seed metering disk includes an upper disk body and a lower disk body that are attached to each other up and down. The upper disk body can move along the column direction of the seed metering opening. The lower disk body can move along the column direction or the row direction of the seed metering opening. The seed metering opening includes an upper constant opening located on the upper disk body and a lower constant opening located on the lower disk body. The vertical projection of the upper constant opening can coincide on the moving path of the lower constant opening.

[0013] Preferably, the seed metering disk moves through a linear slide rail, and the linear slide rail passes through the moving space.

[0014] The utility model has achieved the following technical effects compared with the prior art:

[0015] 1. Improve the seed metering efficiency: Through the uniform dispersion of the vibrating disk and the rapid suction of the air-suction type seed metering needles, the accuracy of seed suction is significantly improved, and then the speed of seed metering is increased, and the overall operation efficiency is improved;

[0016] 2. Improve the accuracy of seed metering: The suction force of the air-suction type seed metering needles is adjustable, which can ensure that only a single seed is sucked each time, thereby improving the accuracy of seed metering and reducing the situation of double seeds or missed seeds.

[0017] 3. Reduce the seed damage rate: The air-suction type seed metering needles' suction method can significantly reduce the damage to seeds during the seed metering process due to the reduction of physical contact with the seeds. This is especially important for fragile or sensitive seeds, which helps to maintain the growth environment of the seeds and reduce resource waste;

[0018] 4. Wide applicability: It is applicable to various seeds of different sizes and shapes. By adjusting the parameters of the air-suction type seed metering needles and the vibration conditions of the vibrating disk, it can flexibly adapt to various seed metering requirements;

[0019] 5. Reduce manual intervention: The improvement of automation reduces the need for manual intervention, lowers the labor intensity, and also reduces the possibility of human errors.

[0020] 6. Cost savings: The improvement in efficiency and the reduction in damage rate directly affect the utilization rate of seeds and the planting cost. Long-term use of this air-suction type seed hash metering and sowing device can achieve significant cost savings. Brief Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 Schematic perspective view of the air-suction type seed hash metering and sowing device;

[0023] Figure 2 For Figure 1 Partial enlarged view;

[0024] Figure 3 Front view structure schematic diagram of the air-suction type seed hash metering and sowing device (without the seed metering plate);

[0025] Figure 4 For Figure 3 Partial enlarged view;

[0026] Figure 5 Rear view structure schematic diagram of the air-suction type seed hash metering and sowing device (without the seed metering plate);

[0027] Figure 6 For Figure 5 Partial enlarged view;

[0028] Figure 7 Schematic diagram of the vibrating plate and the seed guiding tube;

[0029] Figure 8 Top view perspective structure schematic diagram of the seed metering plate;

[0030] Figure 9 Bottom view perspective structure schematic diagram of the seed metering plate;

[0031] Figure 10 Schematic diagram of the upper disk body;

[0032] Figure 11 Schematic diagram of the lower disk body.

[0033] Description of reference numerals: 1. Air-suction type seed metering needle; 2. Vibration disk; 3. Seed metering disk; 4. Seed guiding tube; 5. Device vertical frame; 6. Air needle mounting part; 7. Mounting cross beam; 8. Mounting cross plate; 9. Telescopic cylinder; 10. Connecting rod; 11. Mounting head; 12. Adjusting head; 13. Vibration device; 14. Linear slide rail; 15. Rotating shaft; 16. Bearing; 17. Upper disk body; 18. Lower disk body; 19. Upper constant opening; 20. Lower constant opening; 21. First strip-shaped hole; 22. Second strip-shaped hole; 23. Third strip-shaped hole; 24. First adjusting bolt; 25. Second adjusting bolt; 26. Seed inlet notch; 27. Conical pipe orifice; 28. Moving space; 29. Conveying equipment. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] This embodiment provides an air-suction type seed scattering metering device, as Figures 1 to 11 shown, including an air-suction type seed metering needle 1, a vibration disk 2, and a seed metering disk 3. Among them, the seed metering disk 3 can move linearly along the horizontal direction. The disk surface of the seed metering disk 3 is horizontally arranged, and a seed metering opening that can be opened and closed is provided on the disk surface of the seed metering disk 3. The seed metering openings are arranged in a matrix. The direction of the column of the seed metering openings is parallel to the moving direction of the seed metering disk 3, and the direction of the row of the seed metering openings is perpendicular to the moving direction of the seed metering disk 3. The suction force of the air-suction type seed metering needle 1 is adjustable, and the air-suction type seed metering needles 1 are arranged in rows. The row direction of the air-suction type seed metering needles 1 is the same as the row direction of the seed metering openings. The air-suction type seed metering needles 1 include at least one row, preferably one row is set. If multiple rows are set, the arrangement direction of the multiple rows is the same as the column arrangement direction of the seed metering openings. The number of single-row air-suction type seed metering needles 1 corresponds to the number of single-row seed metering openings. The air-suction type seed metering needles 1 can reciprocally swing along the moving direction of the seed metering disk 3 through a swinging mechanism. The vertical projection of the swinging path of the air-suction type seed metering needles 1 is located on the moving path of the corresponding seed metering openings, so as to ensure that the seeds adsorbed by the air-suction type seed metering needles 1 can be put into the corresponding seed metering openings. The vibration disk 2 is used to hold seeds. The vibration disk 2 is located between the seed metering disk 3 and the air-suction type seed metering needles 1 in height. The vibration disk 2 is located within the vertical projection of the swinging path of the air-suction type seed metering needles 1 in the horizontal position. There is a preset height difference between the vibration disk 2 and the air-suction type seed metering needles 1 that can cause the seeds to be sucked up.

[0036] Working principle:

[0037] Step 1, Seed spreading: Put seeds into the vibrating disk 2. Under the continuous vibration of the vibrating disk 2, the seeds will keep jumping and thus be evenly dispersed on the disk surface, and no seeds will always be at the edge, which is convenient for the air-suction type seed metering needle 1 to effectively suck.

[0038] Step 2, Seed sucking: The air-suction type seed metering needle 1 swings close to the seed pile of the vibrating disk 2 under the action of the swinging mechanism, and realizes the precise adsorption of a single seed by adjusting the suction force. The determining factors for the suction force of the air-suction type seed metering needle 1 are the size and weight of the seeds. The size and weight of the seeds are mainly the standard weight and average size of this variety. Although the seeds vary in size, the difference is not particularly large. By adjusting the suction force, only one seed can be sucked at a time. Each air-suction type seed metering needle 1 can be independently controlled, and the independent air-suction control system allows precise control of the suction and release of seeds by each air-suction type seed metering needle 1, ensuring the accuracy of seed metering and reducing the problems of double seeding and missed seeding.

[0039] Step 3, Seed releasing: The air-suction type seed metering needle 1 swings back close to the seed metering disk 3 and moves above the first row of seed metering ports. As the air suction force stops, the seeds are released from the air-suction type seed metering needle 1 and fall into the seed metering ports.

[0040] Step 4, Cyclic seed metering: After completing the seed metering of one row of seed metering ports, the air-suction type seed metering needle 1 rotates back above the seed pile again. The seed metering disk 3 advances to move the second row of seed metering ports to the position of the first row of seed metering ports, and the next round of sucking and seed metering is carried out until all the seed metering ports complete the seed metering. As long as the seed metering ports are opened subsequently, the seeds arranged in a matrix can be released downward.

[0041] In this embodiment, as Figures 1 to 11 shown, a seed guiding tube 4 is provided between the seed metering disk 3 and the air-suction type seed metering needle 1 for precisely guiding the seeds into the seed metering ports of the seed metering disk 3. The seed guiding tubes 4 are arranged in rows, the row direction of the seed guiding tubes 4 is the same as the row direction of the air-suction type seed metering needles 1, and the number of the seed guiding tubes 4 corresponds to that of the air-suction type seed metering needles 1. One end of the seed guiding tube 4 has an upward-facing tube opening and is provided with a seed inlet notch 26. The seed inlet notch 26 faces the air-suction type seed metering needle 1 and is located on the swinging path of the air-suction type seed metering needle 1 for the air-suction type seed metering needle 1 to rotate into the seed inlet notch 26 so that the seeds can precisely fall into the seed guiding tube 4. The other end of the seed guiding tube 4 has a tapered tube opening 27 and is downward-facing. The vertical projection of the tapered tube opening 27 is located on the moving path of the seed metering port. Move the seed metering disk 3 to make the seed metering port correspond to the tapered tube opening 27 and be located below the tapered tube opening 27, so that the seeds can precisely fall into the seed metering port. The way of necking down of the tapered tube opening 27 can move the seeds precisely into the seed metering port. The seed guiding tube 4 can be vertically arranged or inclined.

[0042] Furthermore, in this embodiment, as Figures 1 to 11As shown in the figure, it includes a device upright frame 5 and an air needle mounting member 6. The air-suction type seed metering needle 1 is mounted on the air needle mounting member 6. A rotating shaft 15 is rotatably connected to the device upright frame 5. The axis of the rotating shaft 15 is parallel to the row direction of the air-suction type seed metering needles 1. The air needle mounting member 6 is fixedly connected to the rotating shaft 15. The air needle mounting member 6 can rotate through the rotating shaft 15, and then the air-suction type seed metering needles 1 can swing. A moving space 28 for the seed plate 3 to pass through is provided on the device upright frame 5, so that the seed plate 3 can move horizontally in a straight line below the air-suction type seed metering needles 1. Preferably, both ends of the rotating shaft 15 can be rotatably connected to the device upright frame 5 through bearings 16.

[0043] Furthermore, in this embodiment, as Figures 1 to 11 shown, the swinging mechanism includes a telescopic cylinder 9 and a connecting rod 10. The cylinder body of the telescopic cylinder 9 is hinged to the device upright frame 5. The piston rod of the telescopic cylinder 9 is hinged to one end of the connecting rod 10. The other end of the connecting rod 10 is fixedly connected to the end of the rotating shaft 15. When the piston rod of the telescopic cylinder 9 expands and contracts, the rotating shaft 15 can be driven to rotate through the connecting rod 10, so as to realize the swinging of the air-suction type seed metering needles 1. The telescopic cylinder 9 can be any one of an electric cylinder, a pneumatic cylinder, and a hydraulic cylinder. Of course, in addition to the above method, the above swinging mechanism can also adopt other common methods in the market, such as directly using a driving motor. The driving motor is connected to the rotating shaft 15 through a speed reducer. The driving motor can be installed on the device upright frame 5 or can be installed on the ground through a motor base. When the output shaft of the driving motor rotates, the rotating shaft 15 can be driven to rotate.

[0044] In this embodiment, as Figures 1 to 11 shown, an adjustable-height mounting cross beam 7 is provided on the device upright frame 5. The seed guiding tube 4 is fixedly installed on the mounting cross beam 7. By adjusting the height of the mounting cross beam 7, the height position relationship between the seed inlet notch 26 and the air-suction type seed metering needles 1 can be changed, so as to adjust to a suitable position to ensure that the air-suction type seed metering needles 1 can be screwed into the seed inlet notch 26, which is beneficial for seeds to fall into the seed guiding tube 4.

[0045] Furthermore, in this embodiment, as Figures 1 to 11 shown, a first strip-shaped hole 21 is vertically provided on the mounting cross beam 7. A first adjusting bolt 24 is provided on the device upright frame 5. The first adjusting bolt 24 passes through the first strip-shaped hole 21 and is locked by a nut. Unscrew the nut externally, move the mounting cross beam 7 up or down to change the position relationship between the first adjusting bolt 24 and the first strip-shaped hole 21, and then screw the nut internally to tighten it, so as to change the height of the mounting cross beam 7, thereby adjusting the height of the seed guiding tube 4.

[0046] In this embodiment, as Figures 1 to 11As shown, there are two mounting cross plates 8 provided on the device vertical frame 5. At one end of the two mounting cross plates 8 facing each other, there is a mounting head 11, and a second elongated hole 22 is vertically provided on the mounting head 11. At both ends of the vibrating bowl 2, there are second adjusting bolts 25. The second adjusting bolts 25 pass through the second elongated hole 22 and are locked by nuts. Loosen the nuts by rotating them outward, move the vibrating bowl 2 up or down to change the positional relationship between the second adjusting bolts 25 and the second elongated hole 22, and then tighten the nuts by rotating them inward, so as to change the height of the vibrating bowl 2, thereby adjusting the height relationship between the vibrating bowl 2 and the air-suction type seed metering needle 1 to make it reach the preset height difference. A vibrating device 13 is installed at the bottom of the vibrating bowl 2 to provide a vibration source for the vibrating bowl 2.

[0047] Further, in this embodiment, as Figures 1 to 11 shown, at one end of the mounting cross plate 8 away from the mounting head 11, there is an adjusting head 12, and a bolt hole is provided on the adjusting head 12. A third elongated hole 23 is vertically provided on the device vertical frame 5. The third adjusting bolt passes through the bolt hole and the third elongated hole 23 and is locked by a nut. Loosen the nut by rotating it outward, move the mounting cross plate 8 up or down to change the positional relationship between the third adjusting bolt and the third elongated hole 23, and then tighten the nut by rotating it inward, so as to change the height of the mounting cross plate 8, thereby adjusting the height of the vibrating bowl 2.

[0048] In this embodiment, as Figures 1 to 11As shown in the figure, the seed metering disc 3 includes an upper disc body 17 and a lower disc body 18, and the upper disc body 17 and the lower disc body 18 are attached to each other up and down. The upper disc body 17 can move along the column direction of the seed metering opening, and the lower disc body 18 can move along the column direction or the row direction of the seed metering opening. The seed metering opening includes an upper constant opening 19 and a lower constant opening 20. The upper constant opening 19 is located on the upper disc body 17, and the lower constant opening 20 is located on the lower disc body 18. The vertical projection of the upper constant opening 19 can coincide with the moving path of the lower constant opening 20. When the lower disc body 18 moves, the upper constant opening 19 and the lower constant opening 20 do not coincide completely, and the upper constant opening 19 is blocked by the lower disc body 18. At this time, the seed metering opening is in the closed state, and the seeds will be in the upper constant opening 19. When the lower disc body 18 is moved so that the upper constant opening 19 and the lower constant opening 20 coincide completely, the seed metering opening is in the open state at this time, and the seeds will fall through the upper constant opening 19 and the lower constant opening 20 in sequence. A limiting slide rail can be provided on the upper disc body 17, and the lower disc body 18 is slidably connected to the lower part of the upper disc body 17 through the limiting slide rail. The lower disc body 18 is moved by a moving mechanism, such as a telescopic rod, or a lead screw nut, etc. For example, the fixed end of the telescopic rod is fixedly connected to the upper disc body 17, and the movable end of the telescopic rod is fixedly connected to the lower disc body 18, and the telescopic direction is parallel to the column direction of the upper constant opening 19 arranged in a matrix or the row direction of the upper constant opening 19 arranged in a matrix. For the lead screw nut, the lead screw is rotatably connected to the upper disc body 17, the nut is installed on the lower disc body 18, and the nut can drive the lower disc body 18 to move by driving the lead screw to rotate by a motor. The axis of the lead screw is parallel to the column direction of the upper constant opening 19 arranged in a matrix or the row direction of the upper constant opening 19 arranged in a matrix.

[0049] Further, in this embodiment, as Figures 1 to 11 shown, the seed metering disc 3 moves through a linear slide rail 14, and the linear slide rail 14 passes through the moving space 28.

[0050] Further, in this embodiment, as Figures 1 to 11 shown, the vibrating disc 2 is fed with seeds by a conveying device 29. Preferably, the conveying device 29 conveys seeds to the vibrating disc 2 through a seed feeding track. There is a seed feeding notch on the side wall of the vibrating disc 2, and the seed feeding track extends above the vibrating disc 2 through the seed feeding notch.

[0051] In the present utility model, specific examples are used to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. An air-suction seed scattering device, characterized in that: The invention comprises a seeding disk capable of linear movement in a horizontal direction, an air-suction seeding needle with adjustable suction force and a vibration disk for holding seeds, wherein the disk surface of the seeding disk is arranged horizontally, and the disk surface of the seeding disk is provided with seeding ports that can be opened and closed, and the seeding ports are arranged in a matrix, and the direction of the rows of the seeding ports is parallel to the moving direction of the seeding disk, and the row direction of the seeding ports is perpendicular to the moving direction of the seeding disk, and the air-suction seeding needles are arranged in rows, and the row direction of the air-suction seeding needles is the same as the row direction of the seeding ports, and a single row of the air-suction seeding needles is arranged in a row. The number of seed needles corresponds to the number of seed openings in a single row, and the air-suction seed needle swings back and forth along the moving direction of the seed disk through a swinging mechanism, and the vertical projection of the swinging path of the air-suction seed needle is located on the moving path of the corresponding seed opening, and the vibration disk is located between the air-suction seed needle and the seed disk in terms of height, and the vibration disk is located within the vertical projection of the swinging path of the air-suction seed needle in terms of horizontal position, and there is a preset height difference between the vibration disk and the air-suction seed needle that enables seeds to be sucked up.

2. The air-suction seed scattering device according to claim 1, characterized in that: A seed guide tube is provided between the seed plate and the air-suction seed needle, the seed guide tubes are arranged in rows, the row direction of the seed guide tubes is the same as the row direction of the air-suction seed needles, the number of the seed guide tubes and the air-suction seed needles corresponds, one end of the seed guide tube has an upward opening and is provided with a seed entry notch, the seed entry notch faces the air-suction seed needle and is located on the swing path of the air-suction seed needle, the other end of the seed guide tube is a conical opening and is arranged downward, and the vertical projection of the conical opening is located on the moving path of the seed opening.

3. The air-suction seed scattering device according to claim 2, characterized in that: It comprises a device stand and an air needle mounting part for mounting the air suction type seeding needle. The air needle mounting part is rotatably connected to the device stand via a rotating shaft. The axis of the rotating shaft is parallel to the row direction of the air suction type seeding needle. The device stand is provided with a moving space for the seeding disk to pass through.

4. The air-suction seed scattering device according to claim 3, characterized in that: The swing mechanism includes a telescopic cylinder and a connecting rod. The cylinder body of the telescopic cylinder is hinged to the device stand, the piston rod of the telescopic cylinder is hinged to one end of the connecting rod, and the other end of the connecting rod is fixedly connected to the end of the rotating shaft.

5. The air-suction seed scattering device according to claim 3, characterized in that: The device stand is provided with a height-adjustable mounting crossbeam, and the seed guide tube is fixedly mounted on the mounting crossbeam.

6. The air-suction seed scattering device according to claim 5, characterized in that: The installation crossbeam is provided with a first strip hole arranged vertically, and the device stand is provided with a first adjusting bolt, and the first adjusting bolt passes through the first strip hole and is locked by a nut.

7. The air-suction seed scattering device according to claim 3, characterized in that: Two mounting horizontal plates are provided on the device stand, and mounting heads are provided at the opposite ends of the two mounting horizontal plates. A second strip hole is vertically arranged on the mounting head, and second adjusting bolts are provided at both ends of the vibration plate. The second adjusting bolts pass through the second strip hole and are locked by nuts. A vibration device is installed at the bottom of the vibration plate.

8. The air-suction seed scattering device according to claim 7, characterized in that: The mounting horizontal plate is provided with an adjusting head, the adjusting head is provided with a bolt hole for the third adjusting bolt to pass through, the device stand is provided with a vertically arranged third strip hole, the third adjusting bolt passes through the bolt hole and the third strip hole and is locked by a nut.

9. The air-suction seed scattering device according to claim 3, characterized in that: The seed plate includes an upper plate body and a lower plate body which are fitted together, the upper plate body can move along the column direction of the seed openings, the lower plate body can move along the column direction or the row direction of the seed openings, the seed openings include an upper normal opening located on the upper plate body and a lower normal opening located on the lower plate body, and the vertical projection of the upper normal opening can overlap on the moving path of the lower normal opening.

10. The air-suction seed scattering device according to claim 9, characterized in that: The seeding disc moves via a linear slide rail, and the linear slide rail passes through the moving space.

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