A seed metering device with adjustable seed quantity.

Abstract

This invention discloses an adjustable seed metering device with a seed collection wheel, comprising a housing, a row of funnels fixedly mounted on the bottom of the housing, a seed collection roller fitted inside the cavity formed by the housing and funnels, and several arc-shaped cover plates covering the top of the seed collection roller. Arc-shaped cover plates and brushes are fixed to the inner wall of the housing, with the brushes and arc-shaped cover plates spaced apart. This invention relates to the field of seed metering technology. The beneficial effect of this invention is that the seed collection amount can be adjusted by adjusting the position of the arc-shaped cover plates. It has a simple structure and is easy to adjust.

Description

Technical Field

[0001] This invention relates to the field of seed metering devices, and in particular to a seed metering device with an adjustable seed dispensing rate using a seed wheel. Background Technology

[0002] Existing seed metering devices have seed holes on the outer circumference of the seed metering wheel. These holes are not penetrating and have chamfered edges to facilitate seed filling and scraping, reducing seed damage. The bottom of the seed hole is spherical or conical to prevent seed jamming. Some seed metering devices have a deep annular groove running along the circumference in the center of the seed hole, containing a seed-removing blade. Others use a sliding sleeve design, allowing axial movement to adjust the lateral size of the seed metering wheel; however, this design has drawbacks, such as complex structure and cumbersome seed dispensing adjustment. Summary of the Invention

[0003] The purpose of this invention is to solve the above problems by designing a seed metering device with adjustable seed quantity.

[0004] To achieve the above objectives, the technical solution of the present invention is a seed metering device with adjustable seeding rate, comprising a housing, a row of funnels fixedly mounted on the bottom of the housing, a seeding roller fitted inside the cavity formed by the housing and the funnels, a plurality of arc-shaped cover plates covering the top of the seeding rollers, and arc-shaped cover plates and brushes fixed on the inner wall of the housing, with the brushes and arc-shaped cover plates spaced apart.

[0005] Preferably, seed-removing knives are installed in the annular notches of the eye roller, and the seed-removing knives are mounted on the funnel by pins.

[0006] A seed metering device with adjustable seed dispensing rate, manufactured using the technical solution of this invention, adjusts the seed dispensing rate by adjusting the position of the arc-shaped cover plate. It has a simple structure and is easy to adjust. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the structure of a seed metering device with adjustable seed quantity according to the present invention;

[0008] Figure 2 This is a cross-sectional view of a seed metering device with adjustable seeding rate according to the present invention;

[0009] Figure 3 This is a schematic diagram of the seed metering roller structure of an adjustable seed metering device according to the present invention;

[0010] Figure 4 This is a schematic diagram of the arc-shaped cover plate structure of the seed metering device with adjustable seed quantity according to the present invention.

[0011] In the diagram, 1. shell, 2. funnel, 3. eyelet roller, 4. arc-shaped cover plate, 5. seed-removing knife, 6. brush. Detailed Implementation

[0012] The present invention will now be described in detail with reference to the accompanying drawings, such as... Figure 1-4 As shown, a seed metering device with adjustable seed quantity includes a housing 1, a funnel 2, a seed roller 3, an arc-shaped cover plate 4, a seed-removing knife 5, and a brush 6.

[0013] A row of funnels 2 is fixedly installed below the shell 1, forming a closed cavity between the shell 1 and the funnels 2. A rotatable seed-filled roller 3 is fitted inside this cavity. The outer circumferential surface of the seed-filled roller 3 has a number of evenly distributed seed holes for holding seeds. Several arc-shaped cover plates 4 cover the top of the seed-filled roller 3. These arc-shaped cover plates 4 are spaced apart along the circumference and fixed to the inner wall of the shell 1. The arc-shaped cover plates 4 are alternately distributed with brushes 6, which are also fixed to the inner wall of the shell 1, for cleaning excess seeds.

[0014] Seed-removing knives 5 are installed in the annular notch of the seed-removing roller 3. The seed-removing knives 5 are mounted on the funnel 2 by means of a pin and can swing around the pin to remove seeds from the seed holes.

[0015] The seed-removing blade 5 adopts a floating pin mounting method, which can adapt to the rotation of the seed-removing roller 3, reducing mechanical damage to the seeds and improving sowing quality. The brush 6 and the arc-shaped cover plate 4 are arranged at intervals, which not only ensures the seed cleaning effect, but also prevents the seeds from accumulating inside the shell 1.

[0016] The above technical solutions only embody the preferred technical solutions of the present invention. Any modifications that may be made by those skilled in the art to certain parts thereof embody the principles of the present invention and fall within the protection scope of the present invention.

Claims

1. A seed metering device with adjustable seed quantity, comprising a housing (1), characterized in that, A row of funnels (2) is fixedly installed below the shell (1). A hollow roller (3) is installed inside the cavity formed by the shell (1) and the funnels (2). Several arc-shaped cover plates (4) are covered on the top of the hollow roller (3). Arc-shaped cover plates (4) and brushes (6) are fixed on the inner wall of the shell (1). The brushes (6) and arc-shaped cover plates (4) are distributed at intervals.

2. The seed metering device with adjustable seed quantity according to claim 1, characterized in that, The seed-removing blades (5) are respectively installed in the annular notch of the eye roller (3), and the seed-removing blades (5) are mounted on the funnel (2) by means of pins.

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