CN212381663U

CN212381663U - Novel seed metering device

Info

Publication number: CN212381663U
Application number: CN202021034611.5U
Authority: CN
Inventors: 桑绍亮
Original assignee: Tianjin Dongfang Taiyangsheng Agricultural Machinery Equipment Co ltd
Current assignee: Tianjin Dongfang Taiyangsheng Agricultural Machinery Equipment Co ltd
Priority date: 2020-06-08
Filing date: 2020-06-08
Publication date: 2021-01-22
Anticipated expiration: 2030-06-08

Abstract

The utility model discloses a novel seed metering device, which comprises a seed metering device; a seed metering disc is arranged in the seed metering device, the seed metering disc is obliquely arranged and provided with adsorption holes, a sealing ring is arranged between the seed metering disc and the seed metering device, the seed metering disc divides the interior of the seed metering device into a seed metering chamber and an air chamber, and a driving motor for driving the seed metering disc to rotate is arranged on the seed metering device; the air chamber is communicated with an air suction pipe; the seed feeding chamber is communicated with a seed inlet pipe and an air blowing pipe; a vertical seed guide pipe is arranged in the seed discharging chamber in a communicating way; the top end of the seed guide pipe is provided with a seed inlet, and the bottom end of the seed guide pipe is provided with a seed outlet; the seed guide pipe is arranged in a tangent way with the circumference where the adsorption holes are located; the seed scraping sheet is arranged on the seed inlet; a hole sealing rubber wheel is arranged in the air chamber. The utility model discloses a seed metering device is splendid to the seed metering effect of bulky seed, and the seed metering is even, can not appear leaking kind of phenomenon.

Description

Novel seed metering device

Technical Field

The utility model relates to the technical field of seeders, especially, relate to a novel seed metering device.

Background

The air-suction type precision seeding device in the air-suction type precision seeding machine continuously discharges air in an air chamber by means of high-speed rotation of a fan, so that negative pressure is generated in the air chamber, and seeds are adsorbed on a seeding plate. The seed sowing mode has good seed sowing effect, firm adsorption, no seed leakage and uniform seed sowing for seeds with small volume. When the seed discharging disc is used for large-volume seeds such as peanuts and broad beans, the adsorption force on one side is slightly insufficient, and seed leakage can occur in a part of adsorption holes on the seed discharging disc. Resulting in uneven seed distribution.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned defects or shortcomings in the prior art, it is desirable to provide a novel seed discharging device which has an excellent seed discharging effect for large-volume seeds, uniform seed discharging, and no seed leakage.

The utility model provides a novel seed metering device, which comprises a seed metering device; a seed metering disc is arranged in the seed metering device, the seed metering disc is obliquely arranged at an included angle of 12-16 degrees with the vertical direction, a plurality of adsorption holes with the diameter of 7-10mm are uniformly arranged on the edge of the seed metering disc close to the edge along the circumferential direction, a sealing ring is arranged between the edge of the seed metering disc and the inner wall of the seed metering device, the seed metering disc divides the inside of the seed metering device into a seed metering chamber and an air chamber, and the seed metering chamber is arranged on one side of the oblique direction of the seed metering disc; the seed sowing device is provided with a driving motor for driving the seed sowing disc to rotate;

the air chamber is communicated with an air suction pipe; the seed sowing chamber is communicated with a seed inlet pipe and an air blowing pipe; the seed discharging chamber is communicated with a vertical seed guide pipe, and the aperture of the air blowing pipe is larger than that of the seed guide pipe; the top end of the seed guide pipe is provided with a seed inlet, and the bottom end of the seed guide pipe is provided with a seed outlet bent towards one side; the seed guide pipe is arranged in a tangent manner with the circumference where the adsorption holes are located; the seed inlet is arranged below the corresponding adsorption hole; a seed scraping sheet attached to the seed metering disc is fixedly arranged on one side, close to the seed metering disc, of the seed inlet; and a hole sealing rubber wheel is arranged in the air chamber corresponding to the seed scraping sheet and used for sealing the adsorption hole above the seed inlet.

Preferably, the seed metering device further comprises an electric fan; the electric fan is provided with an air inlet and an air outlet; the air suction pipe is communicated to the air inlet through a first connecting pipe; the air blowing pipe is communicated to the air outlet through a second connecting pipe.

Preferably, a seed pressing wheel is arranged on one side, located in the bending direction of the seed outlet, of the bottom end of the seed guiding pipe and used for pressing seeds into the seed ditch.

Preferably, the seed guiding pipe is provided with a seed monitoring device for monitoring the seed guiding state.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a seed metering device is provided with the breathing pipe with the air chamber intercommunication and the gas blow pipe with seed metering room intercommunication, is provided with the large aperture adsorption hole of 7-10mm on the seed metering dish, is used for seeding the seed of big granule specially. In order to enhance the adsorption force of the seed sowing plate, the air is blown in the seed sowing chamber to form positive pressure under the condition that the air in the air chamber is pumped to form negative pressure. The aperture of the air blowing pipe is larger than that of the seed guiding pipe, and the air inflow in the seed sowing chamber is larger than the air outflow, so that an effective positive pressure is formed in the seed sowing chamber. Under the action of bidirectional pressure, large-particle seeds are firmly adsorbed on the seed metering disc, and the condition of suction leakage cannot occur. Ensures that the seed metering device has even seeding and excellent seeding quality.

It should be understood that what is described in this summary section is not intended to limit key or critical features of embodiments of the invention, nor is it intended to limit the scope of the invention. Other features of the present invention will become apparent from the following description.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:

FIG. 1 is a schematic view of a seed metering device;

FIG. 2 is a schematic view of the internal structure of the seed metering device;

FIG. 3 is a schematic view of the internal side view of the seed metering device;

FIG. 4 is a rear view of the seed metering device.

Reference numbers in the figures: 1. a seed sowing device; 2. a drive motor; 3. an air intake duct; 4. feeding a seed pipe; 5. an air blowing pipe; 6. a seed guiding pipe; 7. pressing a small wheel; 8. a seed monitoring device;

11. a seed discharging tray; 12. an adsorption hole; 13. a seal ring;

61. seed inlet; 62. discharging; 63. and (5) scraping the sheets.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring to fig. 1 to 4, an embodiment of the present invention provides a novel seed metering device, including a seed metering device 1; a seed plate 11 is arranged in the seed sowing device 1, the seed plate 11 is obliquely arranged at an included angle of 12-16 degrees with the vertical direction, a plurality of adsorption holes 12 with the diameter of 7-10mm are uniformly arranged on the edge of the seed plate 11 close to the edge along the circumferential direction, a sealing ring 13 is arranged between the edge of the seed plate 11 and the inner wall of the seed sowing device 1, the seed plate 11 divides the inside of the seed sowing device 1 into a seed sowing chamber and an air chamber, and the seed sowing chamber is arranged on one side of the seed sowing plate 11 in the oblique direction; the seed sowing device 1 is provided with a driving motor 2 for driving a seed sowing disc 11 to rotate;

the air chamber is communicated with an air suction pipe 3; the seed sowing chamber is communicated with a seed inlet pipe 4 and an air blowing pipe 5; the seeding chamber is communicated with a vertical seed guide pipe 6, and the aperture of the air blowing pipe 5 is larger than that of the seed guide pipe 6; the top end of the seed guide pipe 6 is provided with a seed inlet 61, and the bottom end is provided with a seed outlet 62 bent towards one side; the seed guide pipe 6 is arranged in a tangent way with the circumference where the adsorption holes 12 are positioned; the seed inlet 61 is arranged below the corresponding adsorption hole 12; a seed scraping sheet 63 which is attached to the seed sowing plate 11 is fixedly arranged on one side of the seed inlet 61 close to the seed sowing plate 11; a hole sealing rubber wheel is arranged in the air chamber corresponding to the seed scraping sheet 63 and used for sealing the adsorption hole 12 above the seed inlet 61.

In this embodiment, the seed inlet pipe 4 is communicated to the seed box, and the seeds in the seed box enter the seeding chamber through the seed inlet pipe 4. The seeding plate 11 is arranged obliquely, so that large-particle seeds on the seeding plate 11 can vertically drop downwards after falling down and directly enter the seed inlet 61 of the seed guide pipe 6. The aperture of the adsorption hole 12 is set to be 7-10mm, and the adsorption hole is suitable for adsorbing large-particle seeds. The driving motor 2 can drive the seed-metering disc 11 to rotate to one side of the seed-guiding pipe 6, and the large-particle seeds are conveyed to the upper part of the seed inlet 61 continuously.

The air chamber of the seeding unit 1 sucks air through an air suction pipe 3 to form a negative pressure chamber; the exhaust chamber blows air through the blowing pipe 5 to form a positive pressure chamber. The aperture of the air blowing pipe 5 is larger than that of the seed guiding pipe 6, and the air inflow in the seed sowing chamber is larger than the air outflow, so that an effective positive pressure is formed in the seed sowing chamber. The large-particle seeds are firmly adsorbed on the seed discharging plate 11.

The working principle is as follows:

when sowing, seeds in the seed box enter the seed discharging box through the seed inlet pipe 4, and the seeds are firmly adsorbed on the adsorption holes 12 of the seed discharging plate 11 under the action of double lateral pressure. The driving motor 2 drives the seeding plate 11 to rotate, and the seeding plate 11 drives the seeds to move towards the seed inlet 61. When the seeds move to the upper part of the seed inlet 61, the hole sealing rubber wheels in the air chamber block the adsorption holes 12, so that the negative pressure adsorption force in the air chamber is eliminated, the seeds are scraped off from the seed sowing plate 11 through the seed scraping piece 63 and fall into the seed inlet 61 below, and then the seeds are discharged from the seed outlet 62 and fall into the seed ditch. The seeds are continuously discharged, and uniform sowing is realized.

In a preferred embodiment, the seed metering device further comprises an electric fan; the electric fan is provided with an air inlet and an air outlet; the air suction pipe 3 is communicated to the air inlet through a first connecting pipe; the air blowing pipe 5 is communicated to the air outlet through a second connecting pipe.

In this embodiment, the electric fan may be mounted to the main beam of the planter, or provided in the tractor. The electric fan is powered by the storage battery arranged on the tractor and is not connected with the tractor motor in a transmission way, so that the influence on the output power of the electric fan due to the change of the rotating speed of the tractor motor is avoided. The negative pressure in the air chamber of the seeding unit 1 and the positive pressure in the seeding chamber are always in a stable state, and the stability and the uniformity of seeding are ensured.

In a preferred embodiment, as shown in fig. 1 and 4, the bottom end of the seed guiding tube 6 is provided with a seed pressing wheel 7 at one side of the bending direction of the seed outlet 62 for pressing the seeds into the seed furrow. The play seed outlet 62 of seed guide 6 bottom sets up towards pressing the tangent department of young wheel 7 and kind ditch, and the exhaust seed is directly pressed during the soil of kind ditch by pressing young wheel 7, avoids the seed to beat in kind ditch, causes the uneven problem of seeding.

In a preferred embodiment, as shown in fig. 1, the seed guide tube 6 is provided with a seed monitoring device 8 for monitoring the seed guiding state. The seed monitoring device 8 may be an infrared monitoring device or an ultrasonic monitoring device. For monitoring whether the seeds normally pass. In the seeding process, when no seed passes through the seed guide pipe 6, an indicator light connected with the seed monitoring device 8 is turned on, or a buzzer gives an alarm to remind a driver that the seed box is empty, and the seed is replenished immediately.

In the description of the present specification, the terms "connect", "mount", "fix", and the like are to be understood in a broad sense, for example, "connect" may be a fixed connection, a detachable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In the description of the present application, the description of the terms "one embodiment," "some embodiments," etc. means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A novel seed metering device is characterized by comprising a seed metering device; a seed metering disc is arranged in the seed metering device, the seed metering disc is obliquely arranged at an included angle of 12-16 degrees with the vertical direction, a plurality of adsorption holes with the diameter of 7-10mm are uniformly arranged on the edge of the seed metering disc close to the edge along the circumferential direction, a sealing ring is arranged between the edge of the seed metering disc and the inner wall of the seed metering device, the seed metering disc divides the inside of the seed metering device into a seed metering chamber and an air chamber, and the seed metering chamber is arranged on one side of the oblique direction of the seed metering disc; the seed sowing device is provided with a driving motor for driving the seed sowing disc to rotate;

2. A novel seed metering device as claimed in claim 1 wherein the metering device further comprises an electric fan; the electric fan is provided with an air inlet and an air outlet; the air suction pipe is communicated to the air inlet through a first connecting pipe; the air blowing pipe is communicated to the air outlet through a second connecting pipe.

3. A novel seed metering device as claimed in claim 2, wherein a seed pressing wheel is arranged at one side of the bottom end of the seed guiding pipe in the bending direction of the seed outlet and is used for pressing seeds into the seed ditch.

4. A novel seed metering device as claimed in claim 3 wherein a seed monitoring device is provided on the seed guide for monitoring the seed guide status.