Seed sowing device

Abstract

The utility model discloses a seed-metering device which comprises a seeding box body, a plurality of seed-metering devices are arranged below the seeding box body, each seed-metering device comprises a shell, a wheel set, an adjusting baffle and a partition plate, the shell is provided with an air inlet, a seed inlet and a seed-metering opening, an air inducing device is arranged in the air inlet, and the air inlet and the seed-metering opening form an air exhaust channel; a wheel set is arranged in the shell, a partition plate is arranged on the wheel set and divides the seed inlet into two parts, and an adjusting baffle is arranged on the seed inlet; the wheel set rotates to change the position so as to discharge the seeds from the seed discharging opening; the seed sowing device is novel and reasonable in structural design, and seeds can rapidly and uniformly fall down through the exhaust channel formed by the air inlet and the seed discharging opening; the device can also be matched with a disc opener, a no-tillage device and other mechanical products which are easy to block for use, so that the seeds can be quickly sown, and the seed blocking in the sowing process is reduced.

Description

Technical Field

[0001] This utility model relates to the field of seeders, and in particular to a seed metering device. Background Technology

[0002] Sowing is one of the core processes in agricultural production, and its quality directly affects crop germination rate, uniformity, growth vigor, and ultimately, yield and quality. As a key piece of equipment for mechanized sowing, the performance of the seeder's core component—the seeder (or seed metering device, seed unit)—is crucial. It is responsible for accurately, evenly, and reliably sowing seeds into the soil at preset plant spacing and depth.

[0003] Currently available seed metering devices suffer from problems such as clogging and uneven seed dispensing during the seed dispensing process. Therefore, improvements need to be made to the seed metering device of the seeder to increase seeding efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a seed metering device that uses airflow disturbance to prevent seed bridging and promote uniform and stable seed sowing.

[0005] The purpose of this utility model is achieved as follows: A seed metering device includes a seeding box, with several seed metering devices arranged below the seeding box. Each seed metering device includes a housing, a wheel assembly, an adjusting baffle, and a partition plate. The housing is provided with an air inlet, a seed inlet, and a seed discharging outlet. An air-guiding device is provided inside the air inlet, and the air inlet and seed discharging outlet form an exhaust channel. A wheel assembly is arranged inside the housing, and a partition plate is provided on the wheel assembly, dividing the seed inlet into two parts. An adjusting baffle plate is provided on the seed inlet. The wheel assembly rotates to change its position and discharges seeds from the seed discharging outlet.

[0006] As a further preferred embodiment of the present invention, the wheel set includes a roller and an axle; the axle passes through the roller and drives the roller to rotate within the housing.

[0007] As a further preferred embodiment of this utility model, a side plate is provided at the junction of the wheel assembly and the housing.

[0008] As a further preferred embodiment of this utility model, the side plate is fixedly installed inside the housing by bolts.

[0009] As a further preferred embodiment of this utility model, a guide plate is provided below the seed inlet, and the guide plate is inclined with its lower part facing the roller.

[0010] As a further preferred embodiment of this utility model, the seed outlet is connected to a seed outlet pipe.

[0011] As a further preferred embodiment of this utility model, the air-guiding device blows air into the exhaust channel through the air inlet, so as to achieve uniform seed falling and reduce blockage.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model adopts a split-type seeder. Seeds are placed in the seeding box and can enter the wheel assembly through several seed inlets. Driven by a 12V motor, a fan generates airflow, which discharges the seeds evenly from the exhaust channel for sowing. Compared with traditional cluster-type seeders, this structure has the advantages of faster sowing speed, more uniform seed drop, and less clogging.

[0014] 2. By using the air inlet and seed outlet to form an exhaust channel, the seeds entering the drum are blown around, allowing them to flow out evenly from the seed outlet pipe, reducing seed blockage and improving sowing efficiency.

[0015] 3. Seed metering devices can be used for sowing seeds of rice, wheat, soybeans, rapeseed, sorghum, etc., and have a wide range of applications. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the technical description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the seed metering device installed on the seed box.

[0018] Figure 2 Schematic diagram of the three-dimensional structure of the seed metering device Figure 1 .

[0019] Figure 3 Schematic diagram of the three-dimensional structure of the seed metering device Figure 2 .

[0020] Figure 4 This is a structural diagram of the air inlet, seed inlet, and seed discharge outlet.

[0021] Figure 5 This is a schematic diagram of the internal structure of the seed metering device.

[0022] Figure 6 for Figure 5 Top-down view diagram.

[0023] Figure 7 This is a schematic diagram of the wheel assembly structure.

[0024] Among them, 1-shell, 2-wheel set: 201 roller, 202 shaft, 3-adjusting baffle, 4-divider plate, 5-air inlet, 6-seed inlet, 7-seed outlet, 8-exhaust channel, 9-side plate, 10-guide plate, 11-sowing box, 12-air duct. Detailed Implementation

[0025] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figure 1-7 As shown, a seed metering device includes a seeding box 11, with several seed metering devices arranged below the seeding box 11. Each seed metering device includes a housing 1, a wheel assembly 2, an adjusting baffle 3, and a partition plate 4. The housing 1 is provided with an air inlet 5, a seed inlet 6, and a seed discharging outlet 7. An air intake device 12 is provided inside the air inlet 5, and the air inlet 5 and the seed discharging outlet 7 form an exhaust channel 8. The wheel assembly 2 is arranged inside the housing 1, and the partition plate 4 is provided on the wheel assembly 2, dividing the seed inlet 6 into two parts. The adjusting baffle 3 is provided on the seed inlet 6. The wheel assembly 2 rotates to change its position and discharges seeds from the seed discharging outlet 7.

[0027] Preferably, the wheel set 2 includes a roller 201 and a shaft 202; the shaft 202 passes through the roller 201 and drives the roller 201 to rotate inside the housing 1.

[0028] Preferably, a side plate 9 is provided at the junction of the wheel assembly 2 and the housing 1.

[0029] Preferably, the side plate 9 is fixedly installed inside the housing 1 by bolts.

[0030] Preferably, a guide plate 10 is provided below the seed inlet 6, and the guide plate 10 is inclined and faces the roller 201 below it.

[0031] Preferably, the seed outlet 7 is connected to a seed outlet pipe. Example

[0032] like Figure 1 As shown, several seed-dividing mechanisms are installed below the seed box 11. These seed-dividing mechanisms can... Example

[0033] The housing 1 has a cavity, and two symmetrical holes are provided on the side wall of the housing 1. The wheel set 2 is installed in the cavity through the two holes. Specifically, the wheel set 2 includes a roller 201 and a shaft 202. The roller 201 is provided with a retainer, which is embedded in the two holes. The shaft 202 passes through the retainer and the roller 201. When the shaft 202 rotates, it naturally drives the roller 201 to rotate, discharging the seeds placed in the roller 201. Example

[0034] A channel can be formed between the air inlet 5 and the seed outlet 7 inside the shell. An air-guiding device 12 is installed inside the air inlet 5, and the air blowing path is an exhaust channel, which gives the seeds an external force to fall, so as to reduce blockage and fall evenly.

[0035] Principle: The exhaust system uses a motor to drive a fan to rotate, utilizing fluid dynamics principles to give the gas kinetic and pressure energy, thus achieving a "suction" function, as detailed below:

[0036] The motor drives the fan to rotate at high speed, creating a negative pressure (low pressure zone) at the center of the fan. Outside air is drawn in through the air inlet under atmospheric pressure. The high-speed airflow is guided by the casing, converting kinetic energy into pressure energy, and finally discharged from the air outlet, forming a continuous suction force.

[0037] The above description is only a specific embodiment of this utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of the utility model.

Claims

1. A seed metering device, comprising a seed box (11), wherein a plurality of seed metering devices are disposed below the seed box (11), characterized in that: The seed metering device includes a housing (1), a wheel assembly (2), an adjusting baffle (3), and a partition plate (4). The housing (1) is provided with an air inlet (5), a seed inlet (6), and a seed discharge outlet (7). An air intake device (12) is provided inside the air inlet (5). The air inlet (5) and the seed discharge outlet (7) form an exhaust channel (8). The wheel assembly (2) is provided inside the housing (1). The partition plate (4) is provided on the wheel assembly (2). The partition plate (4) divides the seed inlet (6) into two parts. The adjusting baffle (3) is provided on the seed inlet (6). The wheel assembly (2) rotates to change its position and discharges the seeds from the seed discharge outlet (7).

2. A seed metering device according to claim 1, characterized in that: The wheel assembly (2) includes a roller (201) and a shaft (202); the shaft (202) passes through the roller (201) and drives the roller (201) to rotate inside the housing (1).

3. A seed metering device according to claim 1, characterized in that: A side plate (9) is provided at the junction of the wheel assembly (2) and the housing (1).

4. A seed metering device according to claim 3, characterized in that: The side plate (9) is fixedly installed inside the housing (1) by bolts.

5. A seed metering device according to claim 1, characterized in that: A guide plate (10) is provided below the seed inlet (6), and the guide plate (10) is inclined and faces the roller (201) below it.

6. A seed metering device according to claim 1, characterized in that: The seed outlet (7) is connected to the seeding pipe.

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