Flat seed self-attitude adjusting suction seed disc with guide bar groove-tooth cone hole combination structure

Abstract

The present application relates to the technical field of seed sowing disc, and specifically discloses a flat seed self-adjusting posture adsorption seed sowing disc with guide strip groove-tooth cone hole combined structure, which comprises a disc body, a mounting hole is arranged at the center of the disc body, a plurality of inner grooves in the shape of hourglass are arranged in an annular array at the outer edge of the disc body, a seed disturbing tooth is formed between any two adjacent inner grooves, a seed adsorption hole is arranged on the seed disturbing tooth, a plurality of fan-shaped grooves are arranged on the disc body between the seed disturbing tooth and the mounting hole, and a disturbance guide strip is formed between any two adjacent fan-shaped grooves; compared with the hole structure of the traditional seed sowing disc, the present application can make the flat seeds such as corn more easily lie and be adsorbed during the rotation of the seed sowing disc, improve the stability of the seeds after being adsorbed, avoid the problem of missing planting and broken strips caused by the falling of the seeds under complex working conditions such as vibration, and avoid the adsorption of other seeds after the flat seeds are adsorbed in a lying state, so that the single-grain precision planting of the flat seeds is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of seed sowing disc, and discloses a flat seed self-posture adjusting and adsorbing seed sowing disc with guide groove-toothed cone hole combined structure. BACKGROUND

[0002] As a core component in the pneumatic seed sower, the design of the seed sowing disc determines the sowing effect of the whole seed sower to a large extent. At present, there are various structures of seed sowing discs on the market, such as flat straight hole type, flat cone hole type, groove hole combined type, tooth hole combined type and the like. These seed sowing discs can effectively capture the seeds and achieve single-precision seeding when used for spherical particle seeds, but when used for flat seeds such as corn and lentils, the seeds cannot be effectively combined with the hole wall of the seed adsorption hole, resulting in that the seeds are adsorbed in various postures or cannot be effectively adsorbed and fixed, and there are serious reseeding and missing seeding phenomena, which need to be removed and supplemented in the later period.

[0003] For example, the application number 2022105723016 discloses a self-seed disturbing disc with involute guide groove, which is essentially a specific design of groove hole combined type, which includes a disc body, the outer edge of the upper surface of the disc body is annularly arrayed with a plurality of involute guide grooves, and the upper boundary of the guide groove is provided with a suction hole; the self-seed disturbing disc can disturb the seeds and guide them at the same time, so that the seeds can be accurately captured by the suction hole, but the above-mentioned effect of the seed sowing disc is only limited to spherical seeds such as soybeans, so that the spherical seeds can be guided to roll and adsorb on the suction hole, and the above-mentioned effect cannot be achieved when used for flat seeds. For example, the application number 2022111363272 discloses a high-speed seed sowing disc, which includes a plurality of through holes radially distributed on the outer edge of the seed sowing disc, and a plurality of concave seed stirring grooves, and one seed stirring groove is arranged between every two through holes; the seed sowing disc disclosed by the patent can stir the seeds in the seed sower to some extent through the seed stirring grooves, so that the seeds are more easily captured by the through holes, but when used for flat seeds such as corn, on the one hand, the seeds will be adsorbed in various postures or cannot be effectively adsorbed and fixed, and there are serious reseeding and missing seeding phenomena, and on the other hand, the flat seeds are not as easy to break as spherical seeds in the state of accumulation and sleep in the seed sower, and the flat seeds cannot be effectively disturbed by the seed stirring grooves between the two through holes. Therefore, in view of the technical problems existing in the process of using the existing seed sowing disc for flat seed single-precision seeding, the present application proposes a flat seed self-posture adjusting and adsorbing seed sowing disc with guide groove-toothed cone hole combined structure to solve the shortcomings of the existing seed sowing disc used for flat seed single-precision seeding. SUMMARY

[0004] The present application aims to provide a flat seed self-adjusting posture adsorption seed plate with guide strip groove-tooth cone hole combination structure to solve the problems of missing planting and repeated planting of the existing seed plate when used for flat seed single-seed precision planting, so as to reduce repeated planting and avoid missing planting.

[0005] The present application is realized by the following technical solutions:

[0006] A flat seed self-adjusting posture adsorption seed plate with guide strip groove-tooth cone hole combination structure, comprising a disc body, a mounting hole is formed at the center of the disc body, a plurality of inner grooves in the shape of a sandglass are annularly arranged at the outer edge of the disc body, a seed disturbing tooth is formed between adjacent two inner grooves, an adsorption hole composed of a tapered hole at the upper end and a straight hole at the lower end is formed on each seed disturbing tooth, and the adsorption hole is formed in the middle of the outer convex part on both sides of the seed disturbing tooth, a plurality of fan-shaped grooves are uniformly formed on the disc body between the seed disturbing tooth and the mounting hole, and a disturbing guide strip is formed between adjacent two fan-shaped grooves.

[0007] As a further setting of the above-mentioned scheme, the outer diameter of the tapered hole is d 1 satisfies: The inner diameter of the tapered hole is the same as the straight hole and satisfies d 2=(0.64~0.66) The opening degree of the tapered hole satisfies: ; wherein is the average length of the seed, is the average width of the seed, is the average thickness of the seed.

[0008] As a further setting of the above-mentioned scheme, the inner groove in the shape of a sandglass is in the shape of a radial outer end wide and a radial inner end narrow, and the maximum width of the radial outer end of the inner groove is smaller than the average width of the flat seed, and the minimum width of the middle segment of the inner groove is smaller than the average thickness of the seed.

[0009] As a further setting of the above-mentioned scheme, the height of the seed disturbing tooth is set to be between 1 / 3 D ~2 / 3 D , wherein D is the total thickness of the disc body.

[0010] As a further setting of the above-mentioned scheme, the height of the fan-shaped groove is set to be between 1 / 3D and 2 / 3D, wherein D is the total thickness of the disc body.

[0011] As a further setting of the above-mentioned scheme, the number of seed disturbing teeth and adsorption holes on the disc body is set to be between 18 and 32. ​

[0012] The seed sowing disc disclosed by the application can disturb the flat seed group through the design of the inner groove and the seed disturbing tooth during the rotation of the seed sowing disc, so that the seed is more easily captured by the suction hole, and the seed interacting with the inner groove can be vertically placed on the opening upper end of the inner groove at a certain angle, and then the vertically placed flat seed is directly laid flat in the suction hole under the extrusion of the seed group during the rotation of the seed sowing disc.

[0013] Meanwhile, the flat seed can be adsorbed in the suction hole in a flat posture through the accurate design of the structure and size of the suction hole, so that the flat seed can be adsorbed as much as possible to the inner wall of the suction hole, the air flow is reduced, the air pressure difference on both sides is ensured, and the seed can be more stably adsorbed and fixed. At the same time, since the flat seed is laid flat in the suction hole, the suction hole is almost filled, so that other seeds cannot be adsorbed, thereby effectively avoiding the re-suction, and realizing the single-seed precision sowing of the flat seed.

[0014] In addition, the inner circle of the suction hole on the seed sowing disc is designed through the fan-shaped groove to form a plurality of disturbance guide strips, so that the whole seed group in the filling chamber can be stirred and guided under the structure of the guide strip groove during the rotation of the seed sowing disc, so that the dispersion degree of the whole seed group is larger, and then combined with the disturbance near the suction hole, the adsorption and capture of the flat seed by the suction hole are accelerated, and the filling effect is improved.

[0015] Compared with the prior art, the beneficial effects of the application are as follows:

[0016] The structure and size of the suction hole and the inner groove are designed, so that compared with the hole structure of the traditional seed sowing disc, the flat seed such as corn can be more easily adsorbed in a flat posture during the rotation of the seed sowing disc, the stability of the adsorbed seed is improved, the problem of missing sowing and broken seedlings caused by the seed falling under complex working conditions such as vibration is avoided, and after the flat seed is adsorbed in a flat posture, other seeds can be avoided to be adsorbed, and the single-seed precision sowing of the flat seed is realized.

[0017] The structure of the guide strip groove on the seed sowing disc is designed, and the disturbance guide strip is formed through the fan-shaped groove on the inner circle of the suction hole on the seed sowing disc, so that during the rotation of the seed sowing disc, the accumulation state of the flat seed group in the filling chamber can be effectively broken, the dispersion degree of the seed group is increased, the seed is more easily captured by the suction hole, and the filling qualified rate of the seed sowing device is improved.

[0018] 3、The seed sowing disc has the advantages that the seed sowing disc is designed through the structure of the tooth cone hole on the seed sowing disc, flat seeds can be adsorbed and adjusted in a flat lying posture, the seeds are stably adsorbed and re-adsorption of the seeds is avoided, a cleaning mechanism does not need to be arranged, the overall structure of the traditional pneumatic seed sower is simplified, and the processing cost of the pneumatic seed sower is effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the following embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0020] Figure 1 is a schematic diagram of the three-dimensional structure of the present application;

[0021] Figure 2 is a schematic diagram of the back plane structure of the present application;

[0022] Figure 3 is a schematic diagram of the cross-sectional structure of the seed suction hole in the present application;

[0023] Figure 4 is a schematic diagram of the flat lying and vertical plane structure of the seed to the seed suction hole in the present application. DETAILED DESCRIPTION

[0024] In order to enable the person skilled in the art to better understand the present application scheme, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort should be within the scope of protection of the present application.

[0025] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings Figures 1-4 and in combination with the embodiments. Embodiment 1

[0026] Embodiment 1 discloses a flat seed self-adjusting posture adsorption seed sowing disc with a guide bar groove-tooth cone hole combined structure, referring to the accompanying drawings Figure 1 and the accompanying drawings Figure 2The seed metering disc includes a circular disc body 1, with an assembly hole 2 at the center of the disc body 1 for connection to the seed metering shaft. Multiple hourglass-shaped grooves 4 are arranged in a circular array along the outer edge of the upper surface of the disc body 1. Seed-dispersing teeth 400 are formed between adjacent grooves 4, and a seed-suction hole 3 is formed on the upper surface of each seed-dispersing tooth 400, consisting of an upper conical hole 301 and a lower straight hole 302. In specific designs, the height of the seed-dispersing teeth 400 can be set to 1 / 3 of their height. D ~2 / 3 D Between, in the formula D The total thickness of the disc body; the number of seed-dispersing teeth 400 and seed suction holes 3 can be optimally designed between 18 and 32, depending on the size of the seed metering device and seed metering disc and the agronomic requirements of the crop. The number of seed suction holes 3 in this figure is specifically designed to be 26.

[0027] In the specific design, the inner groove 4 should be designed to be wider at the outer radial end and narrower at the inner radial end. At the same time, the maximum width of the outer radial end of the inner groove should be less than the average width of the flat seeds, and the minimum width of the middle section of the inner groove should be less than the average thickness of the seeds. This design can prevent the flat seeds from being stuck in the groove in a flat position, and allow the flat seeds to stand upright at a certain angle on the upper end of the inner groove. During the rotation, the flat seeds standing upright will be squeezed by the seed population, so that they will lie flat on the upper end of the adjacent seed suction hole and flatten and cover the upper end of the seed suction hole.

[0028] Meanwhile, in order to ensure that flat seeds can be adsorbed in a lying position, please refer to the attached document. Figure 3 and attached Figure 4 The seed suction hole 3 consists of a conical hole 301 at the upper end and a straight hole 302 at the lower end. In terms of specific dimensions, the outer diameter of the conical hole 301 is... d 1 satisfies: In the formula The average length of the seed, and the inner diameter of the conical hole 301. d 2 is equal to straight hole 302, both satisfying d 2 = (0.64~0.66) In the formula This represents the average width of the seed. Additionally, the bevel opening of the conical hole 301... satisfy: In the formula The average thickness of the seed.

[0029] In this embodiment 1, the seed suction hole 3 is located at the outer diameter of the conical hole 301 as described above. d 1. Inner diameter of tapered hole 301 d 2 and the bevel opening of the tapered hole 301 The design of the disc body 1 makes it easier for flat seeds to be adsorbed in a "flat" posture when it is used for flat seed negative pressure seed suction, and after the seed is adsorbed in a flat posture, it can not only be as close as possible to the conical hole 301 to avoid airflow movement at both ends of the suction hole 3, ensure the pressure difference on both sides, improve the fixing effect of the suction seed, but also prevent multiple seeds from being adsorbed in a vertical posture at the same time.

[0030] In addition, in order to make the seed sowing disc in this embodiment 1 have better disturbance effect on flat seeds, so that the seeds are more easily adsorbed by the suction hole 3, this embodiment 1 also uniformly opens a plurality of fan-shaped grooves 5 in the annular area between the suction hole 3 and the assembly hole 2, so that the upper surface of the disc body 1 between the two adjacent fan-shaped grooves 5 constitutes a disturbance guide bar 6. When specifically designed, the fan-shaped grooves 5 can be arranged between 3-6, thereby forming a corresponding number of disturbance guide bars 6, and the height of the disturbance guide bar 6 can also be arranged between 1 / 3 D ~2 / 3 D , wherein D is the total thickness of the disc body. Through the above design of the seed sowing disc, during the rotation of the seed sowing disc, the disturbance guide bar 6 can be used to stir and guide the entire accumulated seed population by entering the lower accumulated flat seed population every certain angle of rotation. Under the large-scale stirring action of the seed population, combined with the disturbance action of the seed disturbing tooth 400, the flat seeds can be effectively adsorbed and fixed by the suction hole 3.

[0031] To verify the performance advantage of the seed sowing disc disclosed in this embodiment 1 in single-seed precision seeding of flat seeds, the existing straight tooth disc, involute disc (application number 2022105723016) and high-speed seed sowing disc (application number 2022111363272) are used as a comparison group, corn seeds are used as experimental objects, and then a full seed test is carried out under different negative pressures and forward speeds. The experimental data finally measured are shown in Table 1.

[0032] Table 1: Seed sowing disc full seed performance test results

[0033]

[0034] It can be seen from the above test data that the seed sowing disc disclosed in the embodiment 1 has an average improvement of about 3.1% under low negative pressure and an average improvement of about 1.3% under high negative pressure compared with the involute disc in realizing single-precision sowing of flat seeds; has an average improvement of about 9.5% under low negative pressure and an average improvement of about 5.9% under high negative pressure compared with the straight-tooth disc; and has an average improvement of about 7.1% under low negative pressure and an average improvement of about 0.8% under high negative pressure compared with the high-speed sowing disc. It can be seen that the seed sowing disc in the embodiment 1 is obviously superior to the existing straight-tooth disc, involute disc and high-speed sowing disc in realizing single-precision sowing of flat seeds, and can effectively reduce the missing sowing and re-sowing phenomenon.

[0035] The above is only a preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A flat seed self-adjusting adsorption and metering disc with a guide strip groove-toothed cone hole combination structure, comprising a disc body, wherein an assembly hole is provided at the center of the disc body, characterized in that, The outer edge of the disc body has multiple hourglass-shaped inner grooves arranged in a ring array. A seed-dispersing tooth is formed between two adjacent inner grooves. Each seed-dispersing tooth has a seed-suction hole formed by a conical hole at the upper end and a straight hole at the lower end. The seed-suction hole is located in the middle of the outwardly protruding part on both sides of the seed-dispersing tooth. Multiple fan-shaped grooves are evenly arranged on the disc body between the seed-dispersing tooth and the assembly hole. A disturbance guide bar is formed between two adjacent fan-shaped grooves. The outer diameter of the conical hole d 1 satisfies: The inner diameter of the tapered hole is the same as that of the straight hole and both satisfy the following conditions: d 2 = (0.64~0.66) The bevel opening of the tapered hole satisfy: In the formula The average length of the seed. The average width of the seed. The average thickness of the seed.

2. The flat seed self-adjusting adsorption seed metering disc with a guide strip groove-toothed cone hole combination structure according to claim 1, characterized in that, The inner groove is hourglass-shaped, with a wider radial outer end and a narrower radial inner end. The maximum width of the outer radial end of the inner groove is less than the average width of the flat seed, and the minimum width of the middle section of the inner groove is less than the average thickness of the seed.

3. The flat seed self-adjusting adsorption and metering disc with a guide strip groove-toothed cone hole combination structure according to claim 2, characterized in that, The height of the seed-disturbing tooth is set between 1 / 3D and 2 / 3D, where D is the total thickness of the disk.

4. The flat seed self-adjusting adsorption and metering disc with a guide strip groove-toothed cone hole combination structure according to claim 1, characterized in that, The height of the fan-shaped groove is set between 1 / 3D and 2 / 3D, where D is the total thickness of the disk.

5. The flat seed self-adjusting adsorption and metering disc with a guide strip groove-toothed cone hole combination structure according to claim 1, characterized in that, The number of seed-disturbing teeth and seed-suction holes on the disc body is between 18 and 32.

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