A seed metering device

Abstract

The application relates to the field of agricultural machinery, in particular to a seed sowing device which comprises a seed container, a fixing frame, a support, a seed guide pipe, a driving rod and seed blocking pieces, the seed container is arranged on the fixing frame, the seed guide pipe is communicated with the seed container and detachably connected with the bottom of the seed container, a waist-shaped hole is formed in the driving rod towards the seed container, the seed guide pipe penetrates through the waist-shaped hole, a first blocking piece is arranged at one end of the waist-shaped hole, a second blocking piece is arranged at the other end of the waist-shaped hole, a first seed blocking piece is arranged at the lower end of the first blocking piece, a second seed blocking piece is arranged at the lower end of the second blocking piece, the first seed blocking piece can block the pipe opening of the seed guide pipe, an arc-shaped opening is formed in the side of the lower end of the seed guide pipe away from the first blocking piece, the second seed blocking piece can enter the arc-shaped opening and block the seed guide pipe, supports are arranged at the two ends of the driving rod, one end of each of the two supports is movably connected with the driving rod, and the other end of each of the two supports is fixedly connected with the fixing frame, a telescopic motor is fixedly connected with one end of the driving rod, and the shell of the telescopic motor is fixedly connected with the support. The application has the effect of accurate seeding.

Description

Technical Field

[0001] This application relates to the field of agricultural machinery, and in particular to a seed metering device. Background Technology

[0002] Traditional seeders often suffer from seed placement deviations and uneven plant spacing due to mechanical design flaws during seed metering, particularly in densely planted environments where they fail to meet agronomical requirements. For example, single-hole seeders are easily affected by soil flatness, with seed placement deviations reaching 3-5 centimeters after planting, impacting crop growth space allocation. Furthermore, manually adjusting seed metering parameters is time-consuming and labor-intensive, and cannot adapt to different seed types and soil conditions in real time, resulting in a significant conflict between sowing efficiency and accuracy. Utility Model Content

[0003] To achieve precise seeding, this application provides a seed metering device.

[0004] The seed metering device provided in this application adopts the following technical solution:

[0005] A seed metering device includes a seed container, a fixed frame, a support, a seed guide tube, a drive rod, and a seed stop plate. The fixed frame is horizontally arranged and its two ends are fixedly mounted on a seeding device. The seed container is placed on the fixed frame. The seed guide tube is vertically arranged and passes through the fixed frame. The seed guide tube communicates with the seed container and is detachably connected to the bottom of the seed container. The drive rod is horizontally arranged at the end of the seed guide tube away from the seed container. The drive rod has a waist-shaped hole facing the seed container. The seed guide tube passes through the waist-shaped hole. A first stop block is provided at one end of the waist-shaped hole, and a second stop block is provided at the other end. Both the first stop block and the second stop block are threadedly connected to the drive rod. A first seed-blocking plate is provided at the lower end, and a second seed-blocking plate is provided at the lower end of the second block. Both the first and second seed-blocking plates are L-shaped. The first seed-blocking plate can block the opening of the seed guide tube. The lower end of the seed guide tube has an arc-shaped opening on the side facing away from the first block. The second seed-blocking plate can enter the arc-shaped opening to block the seed guide tube. The vertical distance between the first and second seed-blocking plates is equal to the distance of one seed. Both ends of the drive rod are provided with brackets. One end of each bracket is movably connected to the drive rod, and the other end is fixedly connected to the fixed frame. One end of the drive rod is fixedly connected to a telescopic motor, and the housing of the telescopic motor is fixedly connected to the bracket.

[0006] By adopting the above technical solution, the seed container is placed on a fixed frame, and the two ends of the fixed frame are fixed to the sowing device to achieve the fixation of the entire device. A seed guide tube is vertically set below the seed container, and the seeds in the seed container enter the seed guide tube and fall down smoothly. A drive rod is set at the lower end of the seed guide tube, and the seed guide tube passes through the waist-shaped hole opened on the drive rod. When the telescopic motor is stationary or retracted, the first stop block is close to the seed guide tube, and the first seed-blocking plate blocks the opening of the seed guide tube, preventing the seed from falling. At this time, since the second stop block is at a certain distance from the seed guide tube, the second seed-blocking plate is located on one side of the arc-shaped opening. When the telescopic motor pushes the drive rod forward, the first seed-blocking plate moves away from the seed guide tube with the first stop block, and one seed in the seed guide tube falls down. The second seed-blocking plate enters the arc-shaped opening to prevent excess seeds from falling. When the drive rod retracts again, the second seed-blocking plate blocks the opening of the seed guide tube again. The first and second seed-blocking plates move back and forth in this way. By adjusting the extension degree of the telescopic motor, sowing can be carried out at a certain plant spacing, achieving the purpose of precise sowing.

[0007] Optionally, a placement hole is provided on the fixing frame along the length direction of the fixing frame, and the bottom of the seed holder is placed in the placement hole.

[0008] By adopting the above technical solution, placing the seed container in the placement hole can effectively enhance the stability of the seed container on the fixed frame, preventing it from falling off. In addition, it can also save raw materials.

[0009] Optionally, the first seed-blocking plate is provided with a first connecting piece at one end near the first stop block, and the second seed-blocking plate is provided with a second connecting piece at one end near the second stop block. Both the first and second connecting pieces are provided with connecting holes, and the first and second stops are provided with corresponding fixing screw holes. Fixing screws are inserted into the connecting holes and fixing screw holes.

[0010] By adopting the above technical solution, the first seed plate and the first stop block are connected by a first connecting piece, and the second seed plate and the second stop block are connected by a second connecting piece. The first connecting piece and the first stop block, and the second connecting piece and the first stop block are all connected by fixing screws, thus achieving a detachable connection. This connection method not only makes installation and disassembly convenient and quick, but also makes the connection between the first seed plate and the second seed plate more stable. It also allows for timely replacement when the first seed plate and the second seed plate are worn or deformed, thus extending the service life of the entire equipment.

[0011] Optionally, the drive rod passes through the bracket, and a limit block is provided at the end of the drive rod away from the telescopic motor. The cross-section of the limit block is larger than the cross-section of the drive rod, and the limit block is threadedly connected to the drive rod.

[0012] By adopting the above technical solution, a limiting block is set at the end of the drive rod away from the telescopic motor, which can effectively prevent the drive rod from falling off the bracket and further enhance the robustness and stability of the equipment.

[0013] Optionally, a dust cover is provided above the limiting block, and the dust cover is detachably connected to the bracket.

[0014] By adopting the above technical solution, a dust cover is set above the limiting block. The dust cover can cover the limiting block and the end of the drive rod, thereby playing a protective role and reducing the risk of soil and other impurities accumulating on the drive rod between the limiting block and the adjacent support, affecting the back-and-forth operation of the drive rod.

[0015] Optionally, the seed container has a seed discharge hole at the bottom, an internal thread on the side wall of the seed discharge hole, and an external thread on the end of the seed guide tube near the seed container, and the seed guide tube is threadedly connected to the seed container.

[0016] By adopting the above technical solution, the seed guide tube and the seed container are connected by threads, which not only fixes the seed guide tube at the bottom of the seed container, but also allows it to be disassembled and stored at any time, so as to save space during transportation and placement. In addition, seed guide tubes with different inner diameters can be replaced according to the size of the seeds.

[0017] Optionally, a screen is provided at the bottom of the seed container, and a ring of protrusions is provided along the inner wall of the seed container at the bottom of the seed container, with the screen mounted on the protrusions.

[0018] By adopting the above technical solution, a sieve is set at the bottom of the seed container. On the one hand, it can play a filtering role, and on the other hand, it can reduce the pressure on the bottom of the seed container, so as to prevent the risk of seeds accumulating at the bottom of the seed container and causing blockage and poor seeding.

[0019] Optionally, the fixing frame has arc-shaped grooves at both ends, and fixing holes are provided on both sides of the arc-shaped grooves, with bolt assemblies installed in the fixing holes.

[0020] By adopting the above technical solution, arc-shaped grooves are opened at both ends of the fixing frame. The arc-shaped grooves pass through the fixing rod of the seeding device and are then fixed with bolt assemblies, thereby fixing the fixing frame on the seeding device and further fixing the entire device on the seeding device.

[0021] Optionally, the number of seed holders is at least three, and the three seed holders are arranged side by side. Each seed holder is provided with a seed guide tube, a first block, a second block, a first seed plate, and a second seed plate below it.

[0022] By adopting the above technical solution, the number of seed containers is set to multiple, and multiple seed containers are arranged side by side, which realizes the simultaneous sowing of seeds by multiple seed guide tubes, achieving simultaneous sowing of multiple rows or columns, thus improving sowing efficiency.

[0023] Optionally, the seed container is provided with a stirring mechanism, which includes a sleeve, an impeller, and a stirring rod. The opposite side walls of the seed container are provided with through holes, and the stirring rod passes through the two opposite through holes. The impeller is spirally arranged around the sleeve and fixedly connected to the sleeve. The sleeve is arranged inside the seed container and fixedly sleeved on the stirring rod. One end of the stirring rod is fixedly connected to a drive motor, and the drive motor is fixedly arranged on a fixed frame.

[0024] By adopting the above technical solution, the impeller is fixedly arranged around the sleeve, and the sleeve is fixedly connected to the stirring rod that runs horizontally through the seed container. When the drive motor drives the stirring rod to rotate, the sleeve and the impeller rotate accordingly, thereby realizing stirring and further achieving smooth seed falling.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. A drive rod is installed at the lower end of the seed guide tube, through which the seed guide tube passes. When the telescopic motor is stationary or retracted, the first stop block is close to the seed guide tube, and the first seed-blocking plate blocks the opening of the seed guide tube, preventing seeds from falling. At this time, because the second stop block is a certain distance from the seed guide tube, the second seed-blocking plate is located on one side of the arc-shaped opening. When the telescopic motor pushes the drive rod forward, the first seed-blocking plate moves away from the seed guide tube along with the first stop block, and one seed in the seed guide tube falls. The second seed-blocking plate enters the arc-shaped opening, preventing excess seeds from falling. When the drive rod retracts again, the second seed-blocking plate blocks the opening of the seed guide tube again. The first and second seed-blocking plates move back and forth in this way. By adjusting the degree of extension and retraction of the telescopic motor, sowing can be carried out at a certain plant spacing, achieving the purpose of precise sowing.

[0027] 2. By connecting the first seed plate and the first stop block with a first connecting piece, and connecting the second seed plate and the second stop block with a second connecting piece, and connecting the first connecting piece to the first stop block and the second connecting piece to the first stop block with fixing screws, a detachable connection is achieved. This connection method not only makes installation and disassembly convenient and quick, but also makes the connection between the first seed plate and the second seed plate more stable. It also allows for timely replacement when the first seed plate and the second seed plate are worn or deformed, thus extending the service life of the entire equipment.

[0028] 3. By installing a sieve at the bottom of the seed container, it can serve as a filter and reduce the pressure on the bottom of the seed container, thus preventing the risk of seeds accumulating at the bottom of the seed container and causing blockages or poor seeding. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a seed metering device according to this application.

[0030] Figure 2 This application Figure 1 An enlarged schematic diagram of part A in the middle.

[0031] Figure 3 This is a schematic diagram of the seed container in this application.

[0032] Figure 4 This is a schematic diagram of another embodiment of the present application.

[0033] Figure 5 This is a schematic diagram of the stirring mechanism in this application.

[0034] Explanation of reference numerals in the attached drawings: 1. Seed holder; 101. Boss; 102. Perforation; 2. Fixing frame; 201. Placement hole; 202. Arc-shaped groove; 3. Support; 301. Round hole; 4. Seed guide tube; 401. Arc-shaped opening; 5. Drive rod; 501. Waist-shaped hole; 6. First stop block; 7. Second stop block; 8. First seed-blocking plate; 801. Vertical part; 802. Horizontal part; 9. Second seed-blocking plate; 10. Telescopic motor; 11. First connecting piece; 12. Second connecting piece; 13. Limiting block; 14. Dust cover; 141. Fixing piece; 142. Positioning hole; 15. Screen; 16. Bolt assembly; 17. Limiting bolt; 18. Stirring mechanism; 181. Sleeve; 182. Impeller; 183. Stirring rod; 1831. Limiting hole one; 19. Drive motor; 20. Positioning screw. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0036] Example 1

[0037] This application discloses a seed metering device. (Refer to...) Figure 1 and Figure 2 A seed metering device includes a seed container 1, a fixing frame 2, a support 3, a seed guide tube 4, a drive rod 5, and a seed baffle plate. The fixing frame 2 is horizontally arranged, and the two ends of the fixing frame 2 are fixed on the sowing device. The seed container 1 is placed on the fixing frame 2. In order to make the seed container 1 stably placed on the fixing frame 2, a placement hole 201 is opened on the fixing frame 2 along the length direction of the fixing frame 2, and the bottom of the seed container 1 is placed in the placement hole 201.

[0038] The seed guide tube 4 is vertically positioned and passes through the fixing frame 2. The seed guide tube 4 is connected to the bottom of the seed container 1 and is detachably connected to the bottom of the seed container 1. The drive rod 5 is horizontally positioned at the end of the seed guide tube 4 away from the seed container 1. The drive rod 5 is parallel to the fixing frame 2 and corresponds to the placement hole 201. A waist-shaped hole 501 is formed on the drive rod 5 facing the seed container 1. The seed guide tube 4 passes through the waist-shaped hole 501 and moves within it. A first stop block 6 is provided at one end of the waist-shaped hole 501, and a second stop block 7 is provided at the other end. Both the first stop block 6 and the second stop block 7 have screw holes. Both the first stop block 6 and the second stop block 7 are sleeved on the drive rod 5 and threadedly connected to the drive rod 5. This design can both fix the first stop block 6 and the second stop block 7 and allow for adjustment of the distance between them at any time. The first stop block 6 has a first seed-blocking plate 8 at its lower end, and the second stop block 7 has a second seed-blocking plate 9 at its lower end. Both the first seed-blocking plate 8 and the second seed-blocking plate 9 have an "L"-shaped structure, that is, both the first seed-blocking plate 8 and the second seed-blocking plate 9 include a vertical part 801 and a horizontal part 802. The vertical part 801 is parallel to the seed guide tube 4, and the horizontal part 802 is perpendicular to the vertical part 801. The horizontal part 802 of the first seed-blocking plate 8 can block the opening of the seed guide tube 4. The lower end of the seed guide tube 4 has an arc-shaped opening 401 on the side facing away from the first stop block 6. The horizontal part 802 of the second seed-blocking plate 9 can enter the arc-shaped opening 401 to block the seed guide tube 4. The vertical distance between the first seed-blocking plate 8 and the second seed-blocking plate 9 is equal to the distance of one seed.

[0039] Both ends of the drive rod 5 are equipped with brackets 3, both brackets 3 are vertically arranged, and one end of each bracket 3 is movably connected to the drive rod 5, that is, each bracket 3 has a round hole 301, through which both ends of the drive rod 5 pass. The other end of each bracket 3 is fixedly connected to the fixing frame 2, that is, the end of each bracket 3 near the fixing frame 2 is integrally formed with the fixing frame 2 or fixedly connected by fastening bolts. A telescopic motor 10 is fixedly connected to one end of the drive rod 5. The telescopic rod of the telescopic motor 10 is fixedly connected to the drive rod 5, and the housing of the telescopic motor 10 is fixedly connected to the bracket 3, thereby fixing the telescopic motor 10 on the bracket 3. The telescopic motor 10 is connected to a single-axis controller. By adjusting the parameters of the single-axis controller, the degree and speed of telescopic motor 10 can be controlled. The telescopic motor 10 drives the drive rod 5 to reciprocate, thereby causing the first seed plate 8 and the second seed plate 9 to alternately block the opening of the seed guide tube 4, so as to achieve the purpose of precise sowing.

[0040] In this application, there are multiple seed containers 1, preferably at least three, with the three seed containers 1 arranged side by side. Each seed container 1 has a seed guide tube 4 below it, and the seed guide tube 4 has an arc-shaped opening 401. The drive rod 5 has a waist-shaped hole 501, and the two ends of the waist-shaped hole 501 are respectively provided with a first stop block 6, a second stop block 7, a first seed blocking plate 8, and a second seed blocking plate 9. This can effectively speed up the sowing speed and improve the sowing efficiency.

[0041] Reference Figure 1 The drive rod 5 passes through the bracket 3. A limit block 13 is provided at the end of the drive rod 5 away from the telescopic motor 10. The cross-section of the limit block 13 is larger than the cross-section of the drive rod 5, thereby preventing the drive rod 5 from falling off the bracket 3. The limit block 13 is threadedly connected to the drive rod 5, thereby realizing the detachable connection between the limit block 13 and the drive rod 5, which facilitates the installation and removal of the limit block 13.

[0042] To prevent soil from accumulating on the drive rod 5 between the limiting block 13 and the bracket 3, thus affecting the reciprocating motion of the drive rod 5, a dust cover 14 is provided above the limiting block 13. A fixing piece 141 is fixedly provided on the edge of the dust cover 14. The fixing piece 141 has a positioning hole 142. A positioning screw hole is correspondingly provided on the bracket 3. A positioning screw 20 is inserted into the positioning hole 142 and the positioning screw hole, so that the dust cover 14 can be closed on the bracket 3, and the dust cover 14 and the bracket 3 can be detachably connected.

[0043] To secure the mounting bracket 2 to the sowing apparatus, the mounting bracket 2 has arc-shaped grooves 202 at both ends, and fixing holes are provided on both sides of the arc-shaped grooves 202, with bolt assemblies 16 installed in the fixing holes. In use, the sowing apparatus's mounting rod is placed in the arc-shaped groove 202, and then the bolt assemblies 16 are tightened. In this application, the arc-shaped groove 202 can be vertically or horizontally relative to the mounting bracket 2, depending on the structure of the sowing apparatus's mounting rod.

[0044] The bottom of the seed container 1 has a seed discharge hole, the side wall of the seed discharge hole has an internal thread, and the seed guide tube 4 has an external thread at one end near the seed container 1. The seed guide tube 4 is threadedly connected to the seed container 1.

[0045] Reference Figure 2 The first seed-blocking plate 8 is provided with a first connecting piece 11 near the first stop block 6, and the second seed-blocking plate 9 is provided with a second connecting piece 12 near the second stop block 7. Both the first connecting piece 11 and the second connecting piece 12 are provided with connecting holes, and the first stop block 6 and the second stop block 7 are provided with corresponding fixing screw holes. Fixing screws are inserted into the connecting holes and fixing screw holes, thereby realizing the detachable connection between the first connecting piece 11 and the first stop block 6, and the detachable connection between the second connecting piece 12 and the second stop block 7.

[0046] Reference Figure 3The bottom of the seed container 1 is equipped with a screen 15, and a ring of protrusions 101 is provided along the inner wall of the bottom of the seed container 1. The screen 15 is mounted on the protrusions 101. If the seed container 1 is full of seeds, and the bottom of the seed container 1 is blocked due to compression or the seeds do not fall smoothly, the screen 15 can be placed on the protrusions 101 to distribute some of the pressure.

[0047] Example 2

[0048] The difference between this embodiment and Embodiment 1 is that: (Refer to...) Figure 4 To further reduce the squeezing pressure between seeds, a stirring mechanism 18 is provided inside the seed container 1. The stirring mechanism 18 includes a sleeve 181, an impeller 182, and a stirring rod 183. Perforations 102 are provided on both opposite side walls of the seed container 1. The stirring rod 183 passes through the two opposite perforations 102. The impeller 182 is spirally arranged around the sleeve 181 and is integrally formed with the sleeve 181. The sleeve 181 is horizontally arranged inside the seed container 1 and is fixedly sleeved on the stirring rod 183. A drive motor 19 is fixedly connected to one end of the stirring rod 183. The drive motor 19 is fixedly arranged on the fixing frame 2.

[0049] Reference Figure 5 The sleeve 181 has a limiting hole 1831 on each of its two opposite side walls, and the stirring rod 183 has a corresponding limiting hole 2. A limiting bolt 17 is inserted into the limiting hole 1831 and the limiting hole 2. When the stirring rod 183 passes through the sleeve 181 and the limiting hole 1831 and the limiting hole 2 correspond, the limiting bolt 17 passes through the limiting hole 1831 on one side of the sleeve 181, enters the limiting hole 2, and then passes out through the limiting hole 1831 on the other side of the sleeve 181. It is then fixed by the corresponding nut, so that the sleeve 181 is fixedly sleeved on the stirring rod 183.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A seed metering device, characterized in that: The device includes a seed holder (1), a fixing frame (2), a support (3), a seed guide tube (4), a drive rod (5), and a seed stop plate. The fixing frame (2) is horizontally arranged, and the two ends of the fixing frame (2) are fixed on the sowing device. The seed holder (1) is placed on the fixing frame (2). The seed guide tube (4) is vertically arranged and passes through the fixing frame (2). The seed guide tube (4) is connected to the seed holder (1) and is detachably connected to the bottom of the seed holder (1). The drive rod (5) is horizontally arranged at the end of the seed guide tube (4) away from the seed holder (1). The drive rod (5) has a waist-shaped hole (501) facing the seed holder (1). The seed guide tube (4) passes through the waist-shaped hole (501). A first stop (6) is provided at one end of the waist-shaped hole (501), and a second stop (7) is provided at the other end. Both the first stop (6) and the second stop (7) are threadedly connected to the drive rod (5). The lower end of the stop block (6) is provided with a first seed-blocking plate (8), and the lower end of the second stop block (7) is provided with a second seed-blocking plate (9). The first seed-blocking plate (8) and the second seed-blocking plate (9) are both in an "L" shape. The first seed-blocking plate (8) can block the opening of the seed guide tube (4). The lower end of the seed guide tube (4) is provided with an arc-shaped opening (401) on the side away from the first stop block (6). The second seed-blocking plate (9) can enter the arc-shaped opening (401) to block the seed guide tube (4). The vertical distance between the first seed-blocking plate (8) and the second seed-blocking plate (9) is equal to the distance of a seed. Both ends of the drive rod (5) are provided with brackets (3). One end of each bracket (3) is movably connected to the drive rod (5), and the other end is fixedly connected to the fixed frame (2). One end of the drive rod (5) is fixedly connected to a telescopic motor (10). The housing of the telescopic motor (10) is fixedly connected to the bracket (3).

2. The seed metering device according to claim 1, characterized in that: The fixed frame (2) has a placement hole (201) along its length direction, and the bottom of the seed container (1) is placed in the placement hole (201).

3. The seed metering device according to claim 1, characterized in that: The first seed-blocking piece (8) is provided with a first connecting piece (11) at one end near the first stop block (6), and the second seed-blocking piece (9) is provided with a second connecting piece (12) at one end near the second stop block (7). Both the first connecting piece (11) and the second connecting piece (12) are provided with connecting holes, and the first stop block (6) and the second stop block (7) are provided with corresponding fixing screw holes. Fixing screws are inserted into the connecting holes and fixing screw holes.

4. A seed metering device according to claim 1, characterized in that: The drive rod (5) passes through the bracket (3). A limit block (13) is provided at the end of the drive rod (5) away from the telescopic motor (10). The cross-section of the limit block (13) is larger than the cross-section of the drive rod (5). The limit block (13) is threadedly connected to the drive rod (5).

5. A seed metering device according to claim 4, characterized in that: A dust cover (14) is provided above the limiting block (13), and the dust cover (14) is detachably connected to the bracket (3).

6. A seed metering device according to claim 1, characterized in that: The seed container (1) has a seed discharge hole at the bottom and an internal thread on the side wall of the seed discharge hole. The seed guide tube (4) has an external thread at one end near the seed container (1) and is threadedly connected to the seed container (1).

7. A seed metering device according to claim 1, characterized in that: The bottom of the seed container (1) is provided with a screen (15), and a ring of protrusions (101) is provided along the inner wall of the bottom of the seed container (1). The screen (15) is mounted on the protrusions (101).

8. A seed metering device according to claim 1, characterized in that: The fixing frame (2) has arc-shaped grooves (202) at both ends, and fixing holes are provided on both sides of the arc-shaped grooves (202), and bolt assemblies (16) are provided in the fixing holes.

9. A seed metering device according to claim 1, characterized in that: The number of seed holders (1) is at least three, and the three seed holders (1) are arranged side by side. Each seed holder (1) is provided with a seed guide tube (4), a first block (6), a second block (7), a first seed plate (8), and a second seed plate (9) below it.

10. A seed metering device according to claim 9, characterized in that: The seed container (1) is provided with a stirring mechanism (18), which includes a sleeve (181), an impeller (182) and a stirring rod (183). The seed container (1) has perforations (102) on both opposite side walls. The stirring rod (183) passes through the two opposite perforations (102). The impeller (182) is spirally arranged around the sleeve (181) and fixedly connected to the sleeve (181). The sleeve (181) is arranged inside the seed container (1) and fixedly sleeved on the stirring rod (183). One end of the stirring rod (183) is fixedly connected to a drive motor (19), which is fixedly arranged on the fixing frame (2).

Images