Electric motor direct drive air suction type seed metering device

Abstract

The utility model discloses motor direct drive air suction type seed metering device relates to seeding equipment technical field, including installation baseplate, one side fixed connection of installation baseplate has fixed shell, the middle of installation baseplate is opened and has installed mouth, and the fixed connection of hollow rotating platform has been installed in installed mouth, one side of hollow rotating platform is equipped with the speed reducer motor for driving hollow rotating platform, the fixed connection of the link block has been fixed in hollow rotating platform output, the link block between fixed shell is equipped with sealing assembly, the utility model discloses the quick opening and dismounting of seed metering box can be realized through the rotatory seat and locking assembly of setting, so that without the aid of tool dismounts multiple fastener, can be convenient for cleaning the seed residue in the box, mildew impurity or replacing different varieties of seeds, significantly shorten maintenance time, improve equipment continuous operation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of seeding equipment technology, specifically to a direct-drive pneumatic seed metering device. Background Technology

[0002] The air suction seed metering device is a core component of modern agricultural seeding machinery. It is widely used for precision seeding of crops such as grains, vegetables, and oilseeds. Based on the principle of negative pressure adsorption, a negative pressure field is formed in the seed metering component through a vacuum pump or other negative pressure source, so that the seeds are adsorbed onto the seed suction holes of the seed metering disc and transported to the seed placement position as the seed metering component rotates. After the negative pressure is removed, the precise seeding is completed.

[0003] Currently, the core structure of existing pneumatic seed metering devices includes a seed box, a seed metering disc, a negative pressure interface, a transmission mechanism, a frame, and sealing components. The seed box, used for seed storage and supply, is mostly a one-piece welded structure or a split structure fixed with 4-6 bolts, connected and fixed to the frame. The seed metering disc is connected to the frame via bearings, with a negative pressure interface on one side forming a negative pressure chamber. In terms of transmission, existing pneumatic seed metering devices generally adopt a "motor + right-angle deflector + gear transmission" drive method. The output shaft of the motor first changes the transmission direction through the right-angle deflector, and then drives the seed metering disc to rotate through the gear mechanism to realize the seed metering operation.

[0004] However, this transmission method has the following drawbacks: High energy loss: Both the right-angle steering gear and the gear transmission have frictional losses, resulting in low energy utilization. The transmission structure is complex, requiring multiple transmission components, which increases manufacturing and maintenance costs. Poor operational reliability: Dust, seed debris and other foreign objects can easily enter the gear meshing parts, leading to gear wear and bearing jamming, which affects seeding accuracy and lifespan; Disassembly is inconvenient: Since seed boxes are mostly connected by multiple bolts, when seeds are moldy or mixed with impurities such as soil or crop debris, multiple fasteners need to be removed with tools to open the box, making the cleaning operation cumbersome and time-consuming. To address the above issues, we provide a direct-drive pneumatic seed metering device. Utility Model Content

[0005] The purpose of this invention is to provide a direct-drive pneumatic seed metering device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A direct-drive pneumatic seed metering device includes a mounting base. A fixed housing is fixedly connected to one side of the mounting base. A mounting opening is provided in the middle of the mounting base, and a hollow rotating platform is fixedly connected inside the mounting opening. A geared motor for driving the hollow rotating platform is provided on one side of the hollow rotating platform. A connecting rotating block is fixedly connected to the output end of the hollow rotating platform. A sealing assembly is provided between the connecting rotating block and the fixed housing. A rotating disk is fixedly connected to the side of the connecting rotating block away from the hollow rotating platform. A seed metering plate is fixedly connected to the rotating disk. Several seed suction holes are distributed on the seed metering plate. A suction assembly that provides negative pressure is provided in the hollow channel of the hollow rotating platform. A seed metering assembly that cooperates with the seed metering plate to perform seed metering is also provided on the fixed housing.

[0007] As a further embodiment of this utility model: the sealing assembly includes an annular groove, which is formed on the side of the connecting rotating block near the fixed housing. A sealing ring is provided in the annular groove, and a sealing ring platform that cooperates with the sealing ring is provided on the fixed housing.

[0008] As a further embodiment of this utility model: the air intake component includes a fixing plate, which is fixedly connected to the housing on the side of the hollow rotating platform away from the mounting base plate. A vent pipe is fixedly connected in the middle of the fixing plate, and the vent pipe passes through the hollow channel of the hollow rotating platform. The end of the vent pipe is placed inside the rotating disk.

[0009] As a further embodiment of this utility model: the seed metering assembly includes a rotating base, which is fixedly connected to one side of the fixed outer shell. A seed metering box is rotatably connected to the rotating base. A locking component for fixing the seed metering box to the fixed outer shell is provided on the side of the seed metering box away from the rotating base. A seed filling port is provided in the middle of the upper end of the seed metering box, and a seed dispensing port is provided on one side of the lower end of the seed metering box. A seed scraper is fixedly connected to the inside of the seed metering box near the seed dispensing port. A separator is fixedly connected to the upper end of the seed scraper. A space is left between the upper end of the separator and the inner wall of the seed metering box for seeds to pass through.

[0010] As a further embodiment of this utility model: the locking component includes a flip seat, which is fixedly connected to the side of the seed box away from the rotating seat. A threaded column is rotatably connected inside the flip seat. A U-shaped plate that mates with the threaded column is fixedly connected to the side of the fixed outer shell away from the rotating seat. A locking nut is threadedly connected to the threaded column. A handle is fixedly connected to both sides of the locking nut.

[0011] As a further improvement of this utility model: the seed metering box has a central opening that penetrates through the seed metering box, and a transparent plate is embedded in the central opening.

[0012] As a further improvement of this utility model, mounting holes are provided at all four corners of the mounting substrate.

[0013] As a further improvement of this utility model, a flange connector is fixedly connected to the end of the vent pipe away from the seed metering plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model enables the seed metering box to be quickly opened and disassembled through the rotating seat and locking components. This allows for easy cleaning of seed residue, moldy impurities, or replacement of different seed varieties without the need for tools to remove multiple fasteners, significantly shortening maintenance time and improving the continuous operation efficiency of the equipment.

[0015] 2. This utility model can seal the rotating parts through the set sealing components. While achieving the sealing effect, it effectively prevents dust, seed debris and other debris from entering the rotating position, causing wear or jamming of the rotating parts.

[0016] 3. This utility model eliminates the traditional right-angle steering gear and gears. The motor energy is directly applied to the hollow rotary table to drive the seeding plate, which improves efficiency. The transmission chain is shortened, the number of parts is reduced, and the whole machine is more compact. At the same time, the absence of gear meshing avoids the entry of foreign objects that may cause wear and jamming, thus improving durability. Since the motor speed can be directly adjusted through electronic control, the seeding uniformity is better. In terms of maintenance, the number of mechanical parts is reduced, and the replacement and repair costs are low. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of one side of the present invention.

[0018] Figure 2 This is a schematic diagram of the structure on the other side of this utility model.

[0019] Figure 3 This is a schematic diagram of the seed metering box in this utility model when it is opened.

[0020] Figure 4 This is a schematic diagram of a partially disassembled structure in this utility model.

[0021] Figure 5 This is a schematic diagram of the connecting block in this utility model.

[0022] The components include: 1. Mounting base plate; 2. Fixed outer shell; 3. Seed filling port; 4. Seed metering box; 5. Rotating seat; 6. Hollow rotating table; 7. Fixing plate; 8. Ventilation pipe; 9. Gear motor; 10. Tilting seat; 11. Seed metering port; 12. Transparent plate; 13. Seed scraper; 14. Separator; 15. Seed metering plate; 16. Rotating disk; 17. Seed suction hole; 18. U-shaped plate; 19. Threaded column; 20. Locking nut; 21. Sealing ring; 22. Connecting rotating block; 23. Ring groove; 24. Sealing ring platform. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1 In this embodiment of the utility model, the motor direct-drive air suction seed meter includes a mounting base plate 1, and mounting holes are provided at all four corners of the mounting base plate 1; the mounting holes facilitate the installation and fixing of the mounting base plate 1.

[0025] Please see Figure 4 and Figure 5 A fixed housing 2 is fixedly connected to one side of the mounting base plate 1. An installation opening is provided in the middle of the mounting base plate 1, and a hollow rotary table 6 is fixedly connected inside the installation opening. A reduction motor 9 for driving the hollow rotary table 6 is provided on one side of the hollow rotary table 6. A connecting rotating block 22 is fixedly connected to the output end of the hollow rotary table 6. A sealing assembly is provided between the connecting rotating block 22 and the fixed housing 2. The sealing assembly includes an annular groove 23, which is located on the side of the connecting rotating block 22 near the fixed housing 2. A sealing ring 21 is provided inside the annular groove 23. A sealing ring platform 24 that cooperates with the sealing ring 21 is provided on the fixed housing 2. Through the sealing ring 21, the annular groove 23 and the sealing ring platform 24, a dynamic seal can be formed between the connecting rotating block 22 and the inner wall of the fixed housing 2 during operation, ensuring that the rotating disk 16 can be sealed while rotating. While ensuring the seal, it can also prevent soil, dust and other particles from the field from entering the rotating component.

[0026] Please see Figures 3-4 A rotating disk 16 is fixedly connected to the side of the connecting rotating block 22 away from the hollow rotating table 6. A seed metering plate 15 is fixedly connected to the rotating disk 16. Several seed suction holes 17 are distributed on the seed metering plate 15. A suction assembly for providing negative pressure is provided in the hollow channel of the hollow rotating table 6. The suction assembly includes a fixing plate 7, which is fixedly connected to the shell of the hollow rotating table 6 away from the mounting base plate 1. A vent pipe 8 is fixedly connected in the middle of the fixing plate 7. The vent pipe 8 passes through the hollow channel of the hollow rotating table 6, and the end of the vent pipe 8 is placed inside the rotating disk 16. A flange connector is fixedly connected to the end of the vent pipe 8 away from the seed metering plate 15. The flange connector at the end of the vent pipe 8 facilitates connection with a device that provides negative pressure during operation, providing a negative pressure environment inside the rotating disk 16 so that the seeds can be adsorbed by the seed suction holes 17 on the seed metering plate 15.

[0027] Please see Figures 1-3 The fixed outer shell 2 is also provided with a seed metering assembly that cooperates with the seed metering plate 15 to meter seeds. The seed metering assembly includes a rotating seat 5, which is fixedly connected to one side of the fixed outer shell 2. A seed metering box 4 is rotatably connected to the rotating seat 5. The seed metering box 4 has a central opening that passes through the middle of the seed metering box 4, and a transparent plate 12 is embedded in the central opening. The inside of the seed metering box 4 can be observed through the transparent plate 12, which makes it convenient for staff to know the remaining amount of seeds at any time. When the seed metering box 4 is closed on the fixed outer shell 2, there is a gap between the seed metering box 4 and the rotating plate 16. This gap can ensure that the rotating plate 16 rotates normally and will not interfere with the seed metering box 4. The width of this gap is smaller than the minimum particle size of the seeds to be sown, ensuring that the seeds cannot leak out from this gap.

[0028] Please see Figure 3 The seed metering box 4 has a locking component on the side away from the rotating seat 5 that is fixed to the fixed outer shell 2. The seed metering box 4 has a seed filling port 3 in the middle of its upper end and a seed dispensing port 11 on one side of its lower end. A seed scraper 13 is fixedly connected to the inside of the seed metering box 4 near the seed dispensing port 11. A separator 14 is fixedly connected to the upper end of the seed scraper 13. A space is left between the upper end of the separator 14 and the inner wall of the seed metering box 4 for seeds to pass through. The seed metering box 4 can be divided into two areas by the separator 14 and the seed scraper 13. The chamber below the seed filling port 3 is the seed chamber, which is used to hold the seeds to be sown. The chamber above the seed dispensing port 11 is the seed dispensing chamber. The seeds adsorbed on the seed suction hole 17 are scraped off by the seed scraper 13 when passing through this area to achieve seed dispensing.

[0029] Please see Figure 3 The locking assembly includes a flip base 10, which is fixedly connected to the side of the seed metering box 4 away from the rotating base 5. A threaded post 19 is rotatably connected inside the flip base 10. A U-shaped plate 18 that mates with the threaded post 19 is fixedly connected to the side of the fixed housing 2 away from the rotating base 5. A locking nut 20 is threaded onto the threaded post 19, and handles are fixedly connected to both sides of the locking nut 20. To lock the seed metering box 4, the seed metering box 4 is placed on the fixed housing 2, then the threaded post 19 is flipped so that it engages with the U-shaped plate 18, and then the locking nut 20 is tightened to lock the fixed housing 2. To open the seed metering box 4, the locking nut 20 is loosened, then the threaded post 19 is flipped so that it disengages from the U-shaped plate 18, and then the seed metering box 4 is flipped to open.

[0030] The working principle of this utility model is as follows: When in use, first connect the air pipe 8 to a device that provides negative pressure, such as a vacuum pump or a negative pressure fan. Then, put an appropriate amount of seeds into the seed metering box 4 through the seed inlet 3. When sowing, the negative pressure device is activated to make the inside of the rotating disk 16 negative pressure, so that the seeds can be adsorbed by the seed suction holes 17 on the seed metering plate 15. Then, the reduction motor 9 is started to drive the hollow rotating table 6 to run. The operation of the hollow rotating table 6 drives the connecting rotating block 22, which drives the rotating disk 16 to rotate. The rotation of the rotating disk 16 drives the seed metering plate 15. When the seed metering plate 15 rotates, the seed suction holes 17 will adsorb the seeds and run together. When the adsorbed seeds pass through the space above the separator 14, they will run to the position of the seed scraper 13 under the continuous rotation of the seed metering plate 15. Then, the seeds are scraped off by the seed scraper 13 and fall from the seed metering port 11.

[0031] It should also be noted that the geared motor 9 and the hollow rotary table 6 in this application are both conventional devices in this technical field, and their principles and control methods are well known to those skilled in the art, so they will not be described in detail here.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Although this specification describes embodiments, not every embodiment contains only one technical solution. This method of description is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A direct-drive pneumatic seed metering device, comprising a mounting base plate (1), characterized in that; A fixed housing (2) is fixedly connected to one side of the mounting base (1). An installation port is opened in the middle of the mounting base (1). A hollow rotary table (6) is fixedly connected inside the installation port. A reduction motor (9) for driving the hollow rotary table (6) is provided on one side of the hollow rotary table (6). A connecting rotating block (22) is fixedly connected to the output end of the hollow rotary table (6). A sealing component is provided between the connecting rotating block (22) and the fixed housing (2). A rotating disk (16) is fixedly connected to the side of the connecting rotating block (22) away from the hollow rotary table (6). A seed metering plate (15) is fixedly connected to the rotating disk (16). Several seed suction holes (17) are distributed on the seed metering plate (15). A suction component that provides negative pressure is provided in the hollow channel of the hollow rotary table (6). A seed metering component that cooperates with the seed metering plate (15) to perform seed metering is also provided on the fixed housing (2).

2. The direct-drive pneumatic seed metering device according to claim 1, characterized in that, The sealing assembly includes an annular groove (23), which is located on the side of the connecting block (22) near the fixed housing (2). A sealing ring (21) is provided in the annular groove (23), and a sealing ring platform (24) that cooperates with the sealing ring (21) is provided on the fixed housing (2).

3. The direct-drive pneumatic seed metering device according to claim 1, characterized in that, The air intake assembly includes a fixed plate (7), which is fixedly connected to the housing on the side of the hollow rotary table (6) away from the mounting base plate (1). A ventilation pipe (8) is fixedly connected in the middle of the fixed plate (7). The ventilation pipe (8) passes through the hollow channel of the hollow rotary table (6), and the end of the ventilation pipe (8) is placed inside the rotating disk (16).

4. The direct-drive pneumatic seed metering device according to claim 1, characterized in that, The seed metering assembly includes a rotating seat (5), which is fixedly connected to one side of the fixed outer shell (2). A seed metering box (4) is rotatably connected to the rotating seat (5). A locking assembly for fixing the seed metering box (4) to the fixed outer shell (2) is provided on the side away from the rotating seat (5). A seed filling port (3) is provided in the middle of the upper end of the seed metering box (4). A seed metering port (11) is provided on one side of the lower end of the seed metering box (4). A seed scraper (13) is fixedly connected to the inside of the seed metering box (4) near the seed metering port (11). A separator (14) is fixedly connected to the upper end of the seed scraper (13). A space for seeds to pass through is left between the upper end of the separator (14) and the inner wall of the seed metering box (4).

5. The direct-drive pneumatic seed metering device according to claim 4, characterized in that, The locking assembly includes a flip seat (10), which is fixedly connected to the side of the seed box (4) away from the rotating seat (5). A threaded column (19) is rotatably connected inside the flip seat (10). A U-shaped plate (18) that mates with the threaded column (19) is fixedly connected to the side of the fixed housing (2) away from the rotating seat (5). A locking nut (20) is threaded onto the threaded column (19). A handle is fixedly connected to both sides of the locking nut (20).

6. The direct-drive pneumatic seed metering device according to claim 5, characterized in that, The seed metering box (4) has a central opening that penetrates through the seed metering box (4), and a transparent plate (12) is embedded in the central opening.

7. The direct-drive pneumatic seed metering device according to claim 1, characterized in that, Mounting holes are provided at all four corners of the mounting base plate (1).

8. The direct-drive pneumatic seed metering device according to claim 3, characterized in that, A flange connector is fixedly connected to the end of the vent pipe (8) away from the seed metering plate (15).

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