CN111165129A - Air-conveying type high-speed corn precision seed supply device - Google Patents
Air-conveying type high-speed corn precision seed supply device Download PDFInfo
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- CN111165129A CN111165129A CN202010169990.7A CN202010169990A CN111165129A CN 111165129 A CN111165129 A CN 111165129A CN 202010169990 A CN202010169990 A CN 202010169990A CN 111165129 A CN111165129 A CN 111165129A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/18—Machines for depositing quantities of seed at intervals
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/20—Parts of seeders for conducting and depositing seed
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Abstract
The invention relates to an air-conveying type high-speed corn precision seed supply device, which comprises a seed box, a seed supply shell and a Venturi seed supply pipe which are sequentially connected from top to bottom; the seed supply shell comprises an upper cavity and a lower cavity, a positioning through hole is formed in the center of the upper cavity, the seed supply wheel is installed in the positioning through hole, the lower cavity of the seed supply shell is funnel-shaped, and a seed dropping opening is formed in the bottom of the lower cavity; the horizontally arranged Venturi tube supply comprises a Venturi cavity, an air inlet pipe, a conveying pipe and a feeding pipe, wherein the air inlet pipe, the seed supply cavity and the conveying pipe are horizontally and sequentially connected; the feeding pipe is obliquely communicated with the seed falling port of the seed supply shell and the upper end of the Venturi cavity. The precision seed-feeding device is compact in structure, can be used in cooperation with a high-speed precision seed-metering device, can realize the function of precision seed feeding, effectively solves the problem of difficult seed filling caused by seed accumulation, greatly improves the working performance of the seed-metering device, ensures the seeding consistency and ensures the quality of corn.
Description
Technical Field
The invention relates to an air-conveying type high-speed corn precision seed supply device, and belongs to the technical field of agricultural machinery.
Background
The mechanized precision seeding of the corn can save manual thinning, save seeds and realize yield increase and cost saving, so the mechanical precision seeding of the corn becomes the development trend of corn seeding in recent years. The seeding apparatus with stable performance and high-speed operation becomes the key for realizing the mechanized precision seeding of the corn.
Most of the current high-speed seeding adopts a pneumatic seeding apparatus, and the main reasons are that the requirements on seed shapes are not high, the damage rate is low, and the structure is simple. But the adaptability to the non-circular seeds such as corn is poor, which is mainly characterized in that the requirements on negative pressure stability, seed layer height and the rotating speed of a seed sowing plate are higher in the seed filling process, so that the seed filling performance is poor, the miss-sowing rate is higher in the actual operation process, and the miss-sowing is serious especially when the rotating speed of a head fan is insufficient and the air pressure is insufficient. The seeds are quantitatively fed into the seed sowing device by adopting an air feeding mode, so that the problem of poor seed filling performance can be effectively solved, and the operation quality is ensured.
Disclosure of Invention
The invention aims to provide an air-conveying type high-speed corn precision seed supply device, which changes originally accumulated seed groups into continuous seed flows to be conveyed into a seed sowing device by adopting an air conveying mode so as to solve the problem of poor seed filling performance of the current seed sowing device, improve the operation speed and ensure the operation quality.
In order to achieve the purpose, the invention provides the following technical scheme:
an air-conveying type high-speed precise corn seed supply device comprises a seed box 1, a seed supply shell 4 and a venturi seed supply pipe 5 which are sequentially connected from top to bottom.
The seed supplying shell 4 comprises an upper cavity and a lower cavity, a positioning through hole 14 is formed in the center of the upper cavity, and the seed supplying wheel 3 is installed in the positioning through hole 14 and used for continuously guiding seeds 2 entering the upper cavity of the seed supplying shell 4 from the seed box 1 into the lower cavity one by one; the lower cavity of the shell 4 is funnel-shaped, and the bottom of the shell is provided with a seed dropping opening 12.
The horizontally arranged Venturi tube 5 comprises a Venturi cavity 18, an air inlet pipe 6, a conveying pipe 7 and a feeding pipe 8, wherein the air inlet pipe 6, the seed feeding cavity and the conveying pipe 7 are horizontally and sequentially connected; wherein, the feeding pipe 8 is obliquely communicated with the seed dropping opening 12 of the shell 4 and the upper end of the Venturi cavity 18; the inner end of the air inlet pipe 6 is inserted into the venturi cavity 18, and the diameter of the air inlet pipe 6 positioned in the venturi cavity 18 is gradually reduced from outside to inside to form a nozzle contraction port 11; the included angle gamma between the axial line of the feeding pipe 8 and the axial line of the air inlet pipe 6 is 45 degrees.
The edge of the port of the connection port of the feeding pipe 8 and the venturi cavity 18, which is closest to the air inlet pipe 6, and the nozzle contraction port 11 are positioned in the same vertical plane.
the nozzle constriction 11 has a constriction angle α of 70 deg..
The diameter D1 of the inlet tube 6 outside the venturi cavity 18 is 36mm, the diameter D2 of the delivery tube 7 is 43mm, and the length L1 of the delivery tube 7 is 300 mm.
The seed supplying wheel 3 is in a cylindrical shape, a plurality of rows of grid grooves 17 which are spirally distributed are arranged on the surface of the cylindrical body along the axial direction of the cylindrical body, the seeds 2 can be accommodated, and when the seed supplying wheel 3 rotates downwards, the grid grooves 17 discharge the seeds 2 evenly and continuously.
Each row of grid grooves 17 comprises a plurality of arc-shaped grooves for accommodating seeds 2.
The diameter of the seed supplying wheel 3 is 77mm, the length is 45mm, the number of the grid grooves 17 is 8, the groove depth is 14mm, the groove radius is 13mm, and the spiral angle is 54 degrees.
An inclined baffle plate 10 is arranged at the seed outlet of the seed box 1; the baffle plate 10 is contacted with an arc-shaped protection plate 13 which is arranged in the feed casing 4 and is arranged on the upper left of the feed wheel 3; the protective plate 13 is arranged outside the seed feeding wheel 3 and extends from the horizontal upper part in a radian concentric with the seed feeding wheel 3; the protection plate 13 completely covers the seed feeding wheel 3 along the axial direction of the seed feeding wheel 3; along the circumferential direction of the seed wheel 3, a protective plate 13 covers a part of the cylindrical surface of the seed wheel 3.
In the seed supply shell 4, an inclined seed cleaning plate 9 is arranged at the upper right part of the seed supply wheel 3, one end of the seed cleaning plate 9 is fixedly connected to the seed supply shell 4, the other end of the seed cleaning plate is in surface contact with the cylinder of the seed supply wheel 3, and the seed cleaning plate 9 extends along the axial direction of the seed supply wheel 3 and is used for cleaning redundant seeds on the grid groove 17 of the seed supply wheel 3.
The seed box 1 and the shell 4 are fixedly connected through bolts passing through the seed box fixing through holes 16 and the shell fixing through holes 15.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention has compact structure, is matched with a high-speed precise seed sowing device for use, adopts an air conveying mode to convey and fill seeds, changes the original accumulated seed groups into an ordered seed flow and improves the seed filling performance of the seed sowing device. Meanwhile, in order to achieve the effect of continuous seed flow, a spiral latticed seed supply wheel and a Venturi seed supply pipe with a nozzle contraction port and an inclined feeding pipe are adopted.
2. The invention adopts the spiral latticed seed supply wheel to provide a prerequisite for realizing the continuous feeding of the seed flow.
3. The invention adopts an air conveying mode to discretize the originally accumulated population, can reduce the mutual extrusion effect among seeds, improves the seed filling effect and is suitable for high-speed operation.
4. The invention designs the Venturi seed supply pipe with the nozzle contraction port and the inclined feeding pipe, which can realize continuous and stable feeding and ordered discharging of seeds.
Drawings
FIG. 1 is a schematic structural view of an air-assisted high-speed corn precision seed-feeding device according to the present invention;
FIG. 2 is an isometric view of a seed box 1 of the air-assisted high-speed corn precision seed feeding device of the present invention;
FIG. 3 is a cross-sectional view of a seed feeding housing 4 of the air-assisted high-speed corn precision seed feeding device of the present invention;
FIG. 4 is a top view of a seed feeding housing 4 of the air-conveying high-speed corn precision seed feeding device of the present invention;
FIG. 5 is an isometric view of a seed feeding wheel 3 of the air-assisted high-speed corn precision seed feeding device of the present invention;
fig. 6 is a cross-sectional view of the venturi seed supply tube 5 of the air-conveying type high-speed corn precision seed supply device of the present invention.
Wherein the reference numerals are:
1 seed case 2 seed
3 seed supply wheel 4 seed supply shell
5 Venturi pipe supply 6 inlet pipe
7 conveying pipe and 8 feeding pipe
9 clear blank 10 keeps off board
11 nozzle contraction mouth 12 seed dropping mouth
13 protection plate 14 positioning through hole
15 casing fixing through hole 16 seed box fixing through hole
17 grid groove 18 venturi cavity
angle of contraction of alpha nozzle orifice 11
The included angle between the axis of the gamma feeding pipe 8 and the axis of the air inlet pipe 6
D1 diameter of inlet pipe 6 outside venturi chamber 18
Diameter of D2 delivery pipe 7
Length of L1 delivery pipe 7
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
As shown in figure 1, the air-conveying type high-speed corn precision seed supply device comprises a seed box 1, a seed supply shell 4 and a venturi seed supply pipe 5 which are sequentially connected from top to bottom.
The seed supplying shell 4 comprises an upper cavity and a lower cavity, a positioning through hole 14 is formed in the center of the upper cavity, and the seed supplying wheel 3 is installed in the positioning through hole 14 and used for continuously guiding seeds 2 entering the upper cavity of the seed supplying shell 4 from the seed box 1 into the lower cavity one by one; the lower cavity of the shell 4 is funnel-shaped, and the bottom of the shell is provided with a seed dropping opening 12.
As shown in FIG. 6, the horizontally arranged Venturi tube 5 comprises a Venturi cavity 18, an air inlet tube 6, a delivery tube 7 and an inlet tube 8, wherein the air inlet tube 6, the seed supply cavity and the delivery tube 7 are horizontally and sequentially connected, the inlet tube 8 is obliquely communicated with the seed falling port 12 of the shell 4 and the upper end of the Venturi cavity 18, the inner end of the inlet tube 6 is inserted into the Venturi cavity 18, the diameter of the inlet tube 6 positioned in the Venturi cavity 18 is gradually reduced from outside to inside to form a nozzle contraction port 11, an included angle gamma between the axis of the inlet tube 8 and the axis of the inlet tube 6 is 45 degrees, the edge of a port, closest to the air inlet tube 6, of a connection port of the inlet tube 8 and the Venturi cavity 18 and the nozzle contraction port 11 are positioned in the same vertical plane, the contraction angle α of the nozzle contraction port 11 is 70 degrees, the diameter D1 of the inlet tube 6 positioned outside the Venturi cavity 18 is 36mm, the diameter D2 of the delivery tube 7 is 43mm, and the length L1 of the delivery tube 7 is 300 mm.
As shown in fig. 5, the seed supplying wheel 3 is cylindrical, and a plurality of rows of grid grooves 17 are spirally distributed on the surface of the cylinder along the axial direction of the cylinder, so as to accommodate the seeds 2, and when the seed supplying wheel 3 rotates downwards (the seed supplying wheel 3 rotates clockwise in fig. 3), the grid grooves 17 can discharge the seeds 2 uniformly and continuously. Each row of grid grooves 17 comprises a plurality of arc-shaped grooves for accommodating seeds 2.
The diameter of the seed supplying wheel 3 is 77mm, the length is 45mm, the number of the grid grooves 17 is 8, the groove depth is 14mm, the groove radius is 13mm, and the spiral angle is 54 degrees.
As shown in fig. 2 to 4, an inclined baffle plate 10 is arranged at the seed outlet of the seed box 1; the baffle plate 10 is in contact with an arc-shaped protection plate 13 provided in the casing 4 on the upper left of the seed feeding wheel 3. The protection plate 13 is arranged outside the seed feeding wheel 3 and extends from the horizontal direction to the upper part in a radian concentric with the seed feeding wheel 3. The protection plate 13 completely covers the seed feeding wheel 3 along the axial direction of the seed feeding wheel 3; along the circumferential direction of the seed wheel 3, a protective plate 13 covers a part of the cylindrical surface of the seed wheel 3. In the seed supply shell 4, an inclined seed cleaning plate 9 is arranged at the upper right part of the seed supply wheel 3, one end of the seed cleaning plate 9 is fixedly connected to the seed supply shell 4, the other end of the seed cleaning plate is in surface contact with the cylinder of the seed supply wheel 3, and the seed cleaning plate 9 extends along the axial direction of the seed supply wheel 3 and is used for cleaning redundant seeds on the grid groove 17 of the seed supply wheel 3.
As shown in fig. 1, the seed tank 1 and the feed casing 4 are fixedly connected by bolts passing through the seed tank fixing through-holes 16 and the casing fixing through-holes 15.
The working process of the invention is as follows:
the seeds 2 are stacked in the seed box 1, and the seeds 2 are accumulated above the seed feeding wheel 3 by a certain amount under the action of the seed baffle plate 10 and the protective plate 13. The seed feeding wheel 3 rotates clockwise, drives the seed in the grid groove 17 that the spiral distributes together, through clear blank 9, stops seed 2 outside the grid groove 17 that the spiral distributes here, along with the rotation of seed feeding wheel 3, 2 continuous discharges of seed in the grid groove 17 that the spiral distributes, via the kind of a mouthful 12 entering inlet tube 8 that falls, in 8 entering venturi confession seed tubes 5 through inlet tube. The air flow is provided by a fan, enters the nozzle contraction port 11 from the air inlet pipe 6 and is accelerated, the falling seeds 2 are horizontally accelerated, and the seeds are blown out from the conveying pipe 7 of the Venturi seed supply pipe 5, so that the whole seed supply process is completed.
While the present invention has been described in detail with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, and various changes and modifications can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Claims (10)
1. The utility model provides a smart volume seed feeding device of high-speed maize of air-assisted transmission which characterized in that: comprises a seed box (1), a seed supply shell (4) and a Venturi seed supply pipe (5) which are connected in sequence from top to bottom;
the seed supply shell (4) comprises an upper cavity and a lower cavity, a positioning through hole (14) is formed in the center of the upper cavity, and a seed supply wheel (3) is installed in the positioning through hole (14) and used for continuously guiding seeds (2) entering the upper cavity of the seed supply shell (4) from the seed box (1) into the lower cavity one by one; the lower cavity of the seed supply shell (4) is funnel-shaped, and the bottom of the seed supply shell is provided with a seed dropping opening (12);
the horizontally arranged Venturi seed supply pipe (5) comprises a Venturi cavity (18), an air inlet pipe (6), a conveying pipe (7) and a feeding pipe (8), and the air inlet pipe (6), the seed supply cavity and the conveying pipe (7) are horizontally and sequentially connected; wherein, the feeding pipe (8) is obliquely communicated with the seed dropping opening (12) of the seed supply shell (4) and the upper end of the Venturi cavity (18); the inner end of the air inlet pipe (6) is inserted into the Venturi cavity (18), and the diameter of the air inlet pipe (6) positioned in the Venturi cavity (18) is gradually reduced from outside to inside to form a nozzle contraction port (11); the included angle gamma between the axial line of the feeding pipe (8) and the axial line of the air inlet pipe (6) is 45 degrees.
2. The air-conveying high-speed corn precision seed-supplying device according to claim 1, characterized in that: the edge of the port of the connection port of the feeding pipe (8) and the Venturi cavity (18), which is closest to the air inlet pipe (6), and the nozzle contraction port (11) are positioned in the same vertical plane.
3. the air-conveying high-speed corn precision seed feeding device according to claim 1, characterized in that the contraction angle α of the nozzle contraction opening (11) is 70 degrees.
4. The air-conveying high-speed corn precision seed-supplying device according to claim 1, characterized in that: the diameter D1 of the air inlet pipe (6) positioned outside the Venturi cavity (18) is 36mm, the diameter D2 of the delivery pipe (7) is 43mm, and the length L1 of the delivery pipe (7) is 300 mm.
5. The air-conveying high-speed corn precision seed-supplying device according to claim 1, characterized in that: the seed supplying wheel (3) is cylindrical, a plurality of rows of grid grooves (17) which are spirally distributed are arranged on the surface of the cylinder along the axial direction of the cylinder, seeds (2) can be accommodated, and when the seed supplying wheel (3) rotates downwards, the grid grooves (17) uniformly and continuously discharge the seeds (2).
6. The air-conveying high-speed corn precision seed-supplying device according to claim 5, characterized in that: each row of grid grooves (17) comprises a plurality of arc-shaped grooves for accommodating seeds (2).
7. The air-conveying high-speed corn precision seed-supplying device according to claim 6, characterized in that: the diameter of the seed feeding wheel (3) is 77mm, the length is 45mm, the number of the grid grooves (17) is 8, the groove depth is 14mm, the groove radius is 13mm, and the helix angle is 54 degrees.
8. The air-conveying high-speed corn precision seed-supplying device according to claim 1, characterized in that: an inclined baffle plate (10) is arranged at the seed outlet of the seed box (1); the seed baffle plate (10) is contacted with an arc-shaped protection plate (13) which is arranged on the upper left of the seed supply wheel (3) in the seed supply shell (4); the protective plate (13) is arranged outside the wheel supply wheel (3) and extends from the horizontal direction to the upper direction in a radian concentric with the wheel supply wheel (3); the protection plate (13) completely covers the wheel feeding wheel (3) along the axial direction of the wheel feeding wheel (3); the protection plate (13) covers a part of the cylindrical surface of the seed feeding wheel (3) along the circumferential direction of the seed feeding wheel (3).
9. The air-conveying high-speed corn precision seed-supplying device according to claim 1, characterized in that: in the seed supply shell (4), an inclined seed cleaning plate (9) is arranged at the upper right part of the seed supply wheel (3), one end of the seed cleaning plate (9) is fixedly connected to the seed supply shell (4), the other end of the seed cleaning plate is in surface contact with the cylinder of the seed supply wheel (3), and the seed cleaning plate (9) extends along the axial direction of the seed supply wheel (3) and is used for cleaning redundant seeds on the grid groove (17) of the seed supply wheel (3).
10. The air-conveying high-speed corn precision seed-supplying device according to claim 1, characterized in that: the seed box (1) and the seed supply shell (4) are fixedly connected through a bolt penetrating through the seed box fixing through hole (16) and the shell fixing through hole (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010169990.7A CN111165129A (en) | 2020-03-12 | 2020-03-12 | Air-conveying type high-speed corn precision seed supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010169990.7A CN111165129A (en) | 2020-03-12 | 2020-03-12 | Air-conveying type high-speed corn precision seed supply device |
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| Publication Number | Publication Date |
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| CN111165129A true CN111165129A (en) | 2020-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010169990.7A Pending CN111165129A (en) | 2020-03-12 | 2020-03-12 | Air-conveying type high-speed corn precision seed supply device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113261417A (en) * | 2021-06-21 | 2021-08-17 | 江西农业大学 | Synchronous air-blowing soil-covering type seed throwing device for rice direct seeding seed metering device |
-
2020
- 2020-03-12 CN CN202010169990.7A patent/CN111165129A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113261417A (en) * | 2021-06-21 | 2021-08-17 | 江西农业大学 | Synchronous air-blowing soil-covering type seed throwing device for rice direct seeding seed metering device |
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