Seed feeding device of seeder

Abstract

The utility model relates to a seed feeding device of a seeder and belongs to the field of agricultural machinery. The utility model solves the technical problems that seeds cannot flow in step by step according to the requirements of a seed-metering device in the existing seeding machine, the seed-metering device is easy to block, and each seed box needs to be filled when the seeds are added. The auger is fixedly installed in an inner cavity of the seed conveying device, one end of the auger is fixedly connected with the output end of the auger motor, the other end of the auger extends into the seed guiding cover, the seed conveying outlet is formed in the side face of the seed conveying device, the seed guiding cover is communicated with the seed conveying outlet, and the air pressure inlet is formed in the lower end of the seed conveying device and communicated with the seed guiding cover. Air is pressed into the seed conveying device through the air pressure inlet, flows through the seed guide cover and is discharged out of the seed conveying device through the seed conveying outlet; the material level sensor is arranged on the inner wall of the shell of the seed-metering device, and the controller of the seed conveying device is used for receiving a signal of the material level sensor and controlling the starting or stopping of the auger motor, and supplying seeds according to the requirements of the seed-metering device. The utility model is used for the seeding machine.

Description

Technical Field

[0001] The utility model relates to a seed delivery device for a seeder, in particular to a seed box and a seed delivery device for a pneumatic seeder, belonging to the field of agricultural machinery. Background Art

[0002] Most existing seed drills use an independent seed box, that is, each seeding device is equipped with a seed box, and seeds flow from the seed box into the seeding device and are further transported to the seeding port via a seed tray to realize automatic seeding.

[0003] Due to the structural setting of the existing seed box, seeds enter the seed meter directly under the action of gravity. The seeds cannot flow in step by step according to the needs of the seed meter. Supplying a large amount of seeds at one time can easily cause blockage of the device. In addition, since each seed meter is equipped with an independent seed box, each seed box needs to be filled separately when adding seeds, which reduces the working efficiency.

[0004] In summary, the existing seeders have the following technical problems: seeds cannot flow in step by step according to the needs of the seeding device, which easily causes the seeding device to be blocked; and each seed box needs to be filled separately when adding seeds, which leads to low work efficiency. Utility Model Content

[0005] The utility model aims to solve the technical problems in the existing seeder that seeds cannot flow in step by step according to the needs of the seeding device, which easily causes the seeding device to be blocked, and each seed box needs to be filled separately when adding seeds, and thus provides a seeding device.

[0006] The technical scheme of the utility model is a seed feeding device for a seeder, comprising a central seed box, a seed feeder, a seed feeding tube and a seed metering device, wherein the seed feeder is installed at the lower end of the central seed box, the seed feeder comprises a controller, an auger motor, an auger, a seed guide cover, an air pressure inlet and a seed feeding outlet, the auger is fixedly installed at the lower end of the central seed box, one end of the auger is fixedly connected to the output end of the auger motor, the other end of the auger extends into the seed guide cover, the seed feeding outlet is arranged on the side of the auger, the seed guide cover is communicated with the seed feeding outlet, the air pressure inlet is arranged at the lower end of the seed feeder, the air pressure inlet is communicated with the seed guide cover, and air is pressed into the seed feeder from the air pressure inlet and flows through the seed guide cover and then discharged from the seed feeder from the seed feeding outlet;

[0007] The seed meter includes a seed meter housing, a level sensor, a seed tray, a seed inlet and a seed discharge port. The level sensor is fixedly mounted on the inner wall of the seed meter housing. The controller of the seed meter is used to receive the signal of the level sensor and control the start or stop of the auger motor. The seed tray is rotatably mounted inside the seed meter along the vertical direction. The seed inlet is arranged on the upper right side of the seed meter housing. The seed outlet of the seed meter is connected to the seed inlet through a seed delivery pipe, and the seed discharge port is arranged on the lower left side of the seed meter housing.

[0008] As another improvement of the present invention, the seed delivery device of the seeder also includes a wind pressure splitter, and a plurality of the seed delivery devices are installed at the lower end of the central seed box, and the wind pressure splitter is respectively connected to the plurality of the wind pressure inlets.

[0009] As another improvement of the present invention, the level sensor is installed on the inner wall of the seed metering device housing, and the installation height of the top end of the level sensor does not exceed the horizontal height of the center of the seed inlet.

[0010] As another improvement of the utility model, a port for delivering seeds to the seed feeder is arranged at the lower end of the central seed box, and the width of the port is the same as the thread pitch between adjacent spiral blades of the auger.

[0011] As another improvement of the utility model, a plurality of equally spaced spiral blades are provided on the auger, and the width ends of the port are respectively aligned with adjacent spiral blades.

[0012] As another improvement of the utility model, the rotation speed of the auger motor during operation is 80 revolutions per minute.

[0013] As another improvement of the utility model, the seed delivery tube is a corrugated tube.

[0014] As another improvement of the utility model, the seed delivery device of the seeder also includes a discharger, and the discharger is installed at the bottom of the seed metering device housing.

[0015] Beneficial effects of the utility model:

[0016] 1. The utility model adopts a central seed box, a seed feeder and a seed metering device to collect and use the signal of the level sensor arranged in the seed metering device, so as to control the start or stop of the auger through the controller, so as to supply seeds according to the demand of the seed metering device, avoid the situation that the seed feeder is blocked by too much seeds supplied at one time, and improve work efficiency.

[0017] 2. The utility model uses a central seed box and an auger seed delivery device. Under the control of the controller, it works according to the response signal of the level sensor to deliver seeds into the seed meter as needed, thereby realizing accurate seed delivery and distribution. The central seed box monitors the seed height in the seed meter in real time through the level sensor, and sends signals to the central controller at regular intervals. When the seed height is lower than the upper line, the auger works to supply seeds to the seed meter, thereby ensuring the continuity and stability of sowing. Compared with independent seed boxes, the central seed box does not need to be filled in each seed box separately when adding seeds, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional view of the central seed box and seed transporter.

[0019] Figure 2 It is a cross-sectional view of the seed meter. DETAILED DESCRIPTION

[0020] Specific implementation method 1: Combination Figure 1 and Figure 2 The present embodiment is described. The present embodiment is a seed delivery device of a seeder, comprising a central seed box 1, a seed feeder 2, a seed feeder tube and a seed metering device 3. The seed feeder 2 is mounted at the lower end of the central seed box 1. The seed feeder 2 comprises a controller, an auger motor 5, an auger 6, a seed guide cover 7, an air pressure inlet 4 and a seed feed outlet 8. The auger 6 is fixed at the lower end of the central seed box 1. The auger 6 is fixedly mounted in the inner cavity of the seed feeder 2. One end of the auger 6 is fixedly connected to the output end of the auger motor 5. The other end of the auger 6 extends into the seed guide cover 7. The seed feed outlet 8 is arranged on the side of the auger 6. The seed guide cover 7 is communicated with the seed feed outlet 8. The air pressure inlet 4 is arranged at the lower end of the seed feeder 2. The air pressure inlet 4 is communicated with the seed guide cover 7. The air is pressed into the seed feeder 2 from the air pressure inlet 4 and flows through the seed guide cover 7 and then discharged from the seed feeder 2 from the seed feed outlet 8.

[0021] The seed meter 3 includes a seed meter housing 11, a level sensor 12, a seed tray 13, a seed inlet 14 and a seed discharge port 15. The level sensor 12 is fixedly mounted on the inner wall of the seed meter housing 11. The controller is used to receive the signal of the level sensor 12 and control the start or stop of the auger motor 5. The seed tray 13 is rotatably mounted inside the seed meter 3 in the vertical direction. The seed inlet 14 is arranged on the upper right side of the seed meter housing 11. The seed delivery outlet 8 is connected to the seed inlet 14 through a seed delivery pipe. The seed discharge port 15 is arranged on the lower left side of the seed meter housing 11.

[0022] According to the expected sowing amount, seeds are added to the central seed box, and the seeds enter the seed feeder from the central seed box, and are transported to the seed guide cover by the auger. The air in the seed guide cover is pressed in by the wind pressure inlet 4, and the seeds enter the seed metering device from the seed delivery outlet and the seed inlet driven by the positive pressure wind. The seeds are driven by the seed tray to the seed delivery outlet, and the air in the seed metering device is pressed in from the seed inlet and pressed out from the seed delivery outlet. When the seed delivery device of the seeder is working, there is a continuous positive pressure inside. The central seed box, seed feeder and seed metering device are connected in coordination, and the signal of the level sensor set in the seed metering device is collected and utilized, so as to control the start or stop of the auger through the controller, so as to supply seeds according to the needs of the seed metering device, avoid the situation that the seeds block the seed feeder due to excessive supply at one time, and improve work efficiency.

[0023] Specific implementation method 2: Combination Figure 1 and Figure 2This embodiment is described. The difference between this embodiment and the specific embodiment 1 is that this embodiment also includes a wind pressure splitter 9. The multiple seed feeders 2 are installed at the lower end of the central seed box 1. The wind pressure splitter 9 is connected to the multiple wind pressure inlets 4 respectively. An auger seed delivery device is used. Under the control of the controller, it works according to the reaction signal of the level sensor, and delivers seeds to the seed meter as needed, realizing accurate seed delivery and distribution. The central seed box monitors the seed height in the seed meter in real time through the level sensor, and sends signals to the central controller at regular intervals. When the seed height is lower than the upper line, the auger works to supply seeds to the seed meter, ensuring the continuity and stability of sowing. Compared with the independent seed box, the central seed box does not need to be filled in each seed box separately when adding seeds, which improves work efficiency. Other components and connection methods are the same as those in the specific embodiment 1.

[0024] Specific implementation method three: Combination Figure 1 and Figure 2 This embodiment is described. The difference between this embodiment and the specific embodiment 1 is that the level sensor 12 is installed on the inner wall of the seed meter housing 11, and the installation height of the top of the level sensor 12 does not exceed the horizontal height of the center of the seed inlet 14. In the design and installation, the height of the level sensor is limited by the height of the seed inlet. When the seed height reaches the horizontal height of the center of the seed inlet 14, the level sensor sends a signal and the auger stops working. The function is to prevent the seed inlet from being blocked by the inflowing seeds during the working process. The other components and connection methods are the same as those of the specific embodiments 1 or 2.

[0025] Specific implementation method four: Combination Figure 1 and Figure 2 This embodiment is described. The difference between this embodiment and the first embodiment is that a port for delivering seeds to the seed delivery device 2 is provided at the lower end of the central seed box 1, and the width of the port is the same as the thread pitch between adjacent spiral blades of the auger 6. The other components and connection methods are the same as any one of the first to third embodiments.

[0026] Specific implementation method five: Combination Figure 1 and Figure 2 This embodiment is described. The difference between this embodiment and the specific embodiment 1 is that a plurality of equally spaced spiral blades are provided on the auger 6, and the width ends of the port are respectively aligned with the adjacent spiral blades. In this embodiment, the number of spiral blades can be 5, forming 4 equally spaced thread pitches, and the width ends of the port are aligned with the spiral blades at the two ends of the second thread pitch of the auger 6 to ensure the accuracy of seed discharge. The other components and connection methods are the same as any one of the specific embodiments 1 to 4.

[0027] Specific implementation method six: Combination Figure 1 and Figure 2This embodiment is described. The difference between this embodiment and the first embodiment is that the rotation speed of the auger motor 5 is 80 rpm. The function is to make the speed of seeds flowing from the auger into the seed metering device faster than the speed of seeds flowing out of the seed metering port, thereby ensuring the operating efficiency of the device. The other components and connection methods are the same as any one of the first to fifth embodiments.

[0028] Specific implementation method seven: Combination Figure 1 and Figure 2 The present embodiment is described, and the difference between the present embodiment and the specific embodiment 1 is that the seed delivery tube is a corrugated tube. The other components and connection methods are the same as any one of the specific embodiments 1 to 6.

[0029] Specific implementation method eight: Combination Figure 1 and Figure 2 This embodiment is described. The difference between this embodiment and the first embodiment is that this embodiment further includes a discharger 17, which is installed at the bottom of the seed metering device housing 11. Other components and connection methods are the same as any one of the first to seventh embodiments.

[0030] Combination Figure 1 and Figure 2 Explain the working principle of the utility model:

[0031] According to the expected sowing amount, seeds are added to the central seed box. The seeds enter the seed feeder from the central seed box and are transported to the seed guide cover by the auger. The air in the seed guide cover is pressed in by the wind pressure inlet. Driven by the positive pressure wind, the seeds enter the seed metering device from the seed delivery outlet and the seed inlet. The seeds are driven by the seed tray to the seed delivery outlet. The air in the seed metering device is pressed in from the seed inlet and pressed out from the seed delivery outlet to complete the sowing. When the seed delivery device of this seeder is working, there is a continuous positive pressure inside. When the seeds in the seed metering device reach the height set by the level sensor, the level sensor feedback signal stops the auger. The level sensor sends a signal to the central controller regularly. When the seed height in the seed metering device is lower than the set height, the auger works to supply seeds to the seed metering device.

[0032] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A seed delivery device for a seeder, characterized in that It comprises a central seed box (1), a seed feeder (2), a seed feed pipe and a seed metering device (3). The seed feeder (2) is installed at the lower end of the central seed box (1). The seed feeder (2) comprises a controller, an auger motor (5), an auger (6), a seed guide cover (7), a wind pressure inlet (4) and a seed feed outlet (8). The auger (6) is fixedly installed in the inner cavity of the seed feeder (2). One end of the auger (6) is fixedly connected to the output end of the auger motor (5). The other end of the auger (6) extends into the seed guide cover (7). The seed feed outlet (8) is arranged on the side of the seed feeder (2). The seed guide cover (7) is connected to the seed feed outlet (8). The wind pressure inlet (4) is arranged at the lower end of the seed feeder (2). The wind pressure inlet (4) is connected to the seed guide cover (7). Air is pressed into the seed feeder (2) from the wind pressure inlet (4), flows through the seed guide cover (7), and then is discharged from the seed feeder (2) from the seed feed outlet (8). The seeding device (3) comprises a seeding device housing (11), a level sensor (12), a seed tray (13), a seed inlet (14) and a seed discharge port (15). The level sensor (12) is fixedly mounted on the inner wall of the seeding device housing (11). The controller is used to receive a signal from the level sensor (12) and control the start or stop of the auger motor (5). The seed tray (13) is rotatably mounted inside the seeding device (3) in a vertical direction. The seed inlet (14) is arranged at the upper right part of the seeding device housing (11). The seed delivery outlet (8) is connected to the seed inlet (14) through a seed delivery pipe. The seed discharge port (15) is arranged at the lower left part of the seeding device housing (11).

2. A seed delivery device for a seeder according to claim 1, characterized in that It also includes a wind pressure divider (9), a plurality of seed transporters (2) are installed at the lower end of the central seed box (1), and the wind pressure divider (9) is respectively connected to the plurality of wind pressure inlets (4).

3. A seed delivery device for a seeder according to claim 1, characterized in that: The level sensor (12) is installed on the inner wall of the seed meter housing (11), and the installation height of the top end of the level sensor (12) does not exceed the horizontal height of the center of the seed inlet (14).

4. A seed delivery device for a seeder according to claim 1, characterized in that: The lower end of the central seed box (1) is provided with a port for conveying seeds to the seed conveyor (2), and the width of the port is the same as the thread pitch between adjacent spiral blades of the auger (6).

5. A seed delivery device for a seeder according to claim 4, characterized in that: The auger (6) is provided with a plurality of equally spaced spiral blades, and the width ends of the port are respectively aligned with adjacent spiral blades.

6. A seed delivery device for a seeder according to claim 1, characterized in that: The rotation speed of the auger motor (5) during operation is 80 rpm.

7. A seed delivery device for a seeder according to any one of claims 1 to 6, characterized in that: The seed delivery tube is a corrugated tube.

8. A seed delivery device for a seeder according to any one of claims 1 to 6, characterized in that It also includes a discharger (17), which is installed at the bottom of the seed metering device housing (11).

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