CN109874467B - Modified hole air suction type precise seed sowing device - Google Patents
Modified hole air suction type precise seed sowing device Download PDFInfo
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- CN109874467B CN109874467B CN201910330426.6A CN201910330426A CN109874467B CN 109874467 B CN109874467 B CN 109874467B CN 201910330426 A CN201910330426 A CN 201910330426A CN 109874467 B CN109874467 B CN 109874467B
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- seed metering
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- metering device
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- 238000009331 sowing Methods 0.000 title description 5
- 230000000903 blocking effect Effects 0.000 claims abstract description 23
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 4
- 230000008859 change Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 230000005484 gravity Effects 0.000 description 10
- 230000009471 action Effects 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- 244000241257 Cucumis melo Species 0.000 description 1
- 235000015510 Cucumis melo subsp melo Nutrition 0.000 description 1
- 244000020551 Helianthus annuus Species 0.000 description 1
- 235000003222 Helianthus annuus Nutrition 0.000 description 1
- FJJCIZWZNKZHII-UHFFFAOYSA-N [4,6-bis(cyanoamino)-1,3,5-triazin-2-yl]cyanamide Chemical compound N#CNC1=NC(NC#N)=NC(NC#N)=N1 FJJCIZWZNKZHII-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
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Abstract
The invention relates to a modified hole air suction type precise seed metering device, which comprises a seed metering device cover, an air blocking disc, a seed metering disc, a main shaft and a seed metering device shell, wherein the air blocking disc and the seed metering disc are positioned between the seed metering device cover and the seed metering device shell and are tightly attached, the air blocking disc is fixed between the seed metering device shells, the seed metering disc rotates along with the main shaft, and an effective seed suction hole is formed by the seed suction hole on the seed metering disc and inner and outer arc grooves on the air blocking disc. The invention aims at the problem that large-particle flat seeds drop when rotating around the seed suction holes in the air suction type seed metering process, the seeds can be accurately adsorbed at any time by utilizing the effective seed suction holes which periodically change along with the rotation of the seed metering disc, the protruding parts on the seed metering disc can support the seeds during seed taking, the seed direction is guided during seed feeding, and the air suction type seed metering performance of the large-particle flat seeds is improved.
Description
Technical Field
The invention belongs to the technical field of agricultural seed metering, and particularly relates to a modified hole air suction type precise seed metering device.
Background
When large-particle flat seeds, such as seed-metering seeds of melon, sunflower, cucurbit and the like, are operated by the air-suction seed metering device, certain deviation exists between the absorption position of the seeds on the seed suction hole and the gravity center, when the gravity center is deviated relative to the seed suction hole, the seeds rotate to the highest point of a seed metering disc along with the seed suction hole, the speed direction is reversed, the seeds can relatively rotate around the seed suction hole under the action of inertia force and gravity, and the gravity center of the rotated seeds moves downwards, so that the seeds are separated from the seed suction hole, and miss seeding is caused.
Disclosure of Invention
The invention aims to solve the technical problems that: solves the problem of miss-seeding of large-particle flat seeds in the high-speed operation process of air suction type seed metering.
The technical scheme for solving the technical problems is as follows: the utility model provides a precision seed metering ware is inhaled to modified hole air, includes seed metering ware lid, seed metering dish, main shaft, seed metering ware shell, seed metering ware lid and the left side fixed connection of seed metering ware shell, evenly distributed a plurality of seed sucking holes on the same circumference of seed metering dish quotation, seed metering dish locate the left side of seed metering ware lid and with the right-hand member fixed connection of main shaft, the main shaft passes through the bearing and rotates with the seed metering ware shell to be connected, and the seed metering ware shell passes through the baffle and separates into normal pressure room and negative pressure room, its characterized in that: the novel seed metering device comprises a seed metering device shell, and is characterized in that an air blocking disc is arranged between the seed metering device shell and the seed metering disc, the left side face of the air blocking disc is fixedly connected with the right side of the seed metering device shell, the right side face of the air blocking disc is tightly attached to the left end face of the seed metering disc, a central hole is formed in the center of the air blocking disc and used for penetrating through a main shaft, the axial lead of the air blocking disc coincides with the axial lead of the seed metering disc, an arc-shaped groove which is communicated and tends to the center of a circle along the rotation direction is formed in the area, corresponding to the negative pressure chamber, of the disc face of the air blocking disc, the center of the arc-shaped groove coincides with the axial lead of the air blocking disc and the axial lead of the seed metering disc, and the arc-shaped groove coincides with the circumference where the seed suction hole is located. Preferably, the seed metering disc comprises an integrally formed column part and a protruding part, the protruding part is positioned at the left side of the column part, the protruding part is a conical or conical table, the seed suction hole is in a long strip shape, the length direction of the seed suction hole coincides with the radial direction of the seed metering disc, and the seed suction hole starts from the protruding part and ends at the column part.
More preferably, the arc-shaped grooves of the air baffle disc are two, namely an inner arc-shaped groove and an outer arc-shaped groove, the inner arc-shaped groove is positioned at the inner side of the outer arc-shaped groove, one end of the inner arc-shaped groove is overlapped with one end of the outer arc-shaped groove in the circumferential direction, the overlapped area is in the range of 5-10 degrees of the circumference, the overlapped area is positioned in the range of 10 degrees of the left and right of the vertical direction, and the non-overlapped ends of the inner arc-shaped groove and the outer arc-shaped groove are overlapped with the boundaries of two ends of the negative pressure chamber respectively.
More preferably, the widths of the inner arc-shaped groove and the outer arc-shaped groove are the same, and the widths are 4-6mm.
The beneficial effects of the invention are as follows:
when the air suction type seed metering device with the modified holes works, the effective seed suction area of the seed suction holes changes along with the rotation of the seed metering disc, and when flat seeds relatively rotate with the seed suction holes due to the inertia and the gravity, the gravity center of the seeds is kept to coincide with the effective seed suction holes, so that the adsorption performance of the air suction type seed metering device on the flat seeds is improved.
Drawings
FIG. 1 is an exploded view of a modified orifice air-aspiration precision seed metering device;
FIG. 2 is a front view of a modified orifice air-aspiration precision seed metering device;
FIG. 3 is a cross-sectional view taken along the direction A-A in FIG. 2;
FIG. 4 is an enlarged view at B in FIG. 3;
FIG. 5 is a schematic view of the structure of a seed plate;
fig. 6 is a schematic structural view of the air blocking disc.
In the figure:
1. the seed metering ware lid 2, seed metering dish 3, keep off gas dish 4, seed metering ware shell 5, negative pressure chamber 6, recess 7, bearing 8, main shaft 9, bottom plane 10, inhale kind hole 11, inclined plane 12, inner ring groove 13, outer annular groove 14, knob 15, centre bore.
Detailed Description
In order to make the technical scheme and beneficial effects of the present invention clearer, the following further explain the embodiments of the present invention in detail.
As shown in fig. 1, a modified hole air suction type precision seed metering device comprises a seed metering device cover 1, a seed metering disc 2, an air blocking disc 3, a seed metering device shell 4 and a main shaft 8. The seed metering ware shell 4 is the cavity casing that is equipped with the open portion to the face that the open portion is located is the plane. The inside of the seed sowing device shell 4 is divided into a normal pressure chamber and a negative pressure chamber 5 by a partition board. The negative pressure chamber 5 is provided with an air suction hole for connecting a negative pressure source. As shown in fig. 1, the negative pressure chamber 5 is in the shape of a horseshoe and is provided along the outer periphery of the seed metering device housing 4. The center position of the opposite side of the open part of the seed metering device shell 4 is rotationally connected with the right side of the main shaft 8 through a bearing 7. The main shaft 8 is located at one end of the outer portion of the seed meter housing 4 for connection to a drive system. The seed metering ware cover 1 is the casing that is equipped with the open portion to seed metering ware cover 1 and the open portion fixed connection of seed metering ware shell 4 are used for forming airtight cavity. The seed metering dish 2 is arranged between the seed metering cover 1 and the seed metering shell 4, and the center of the seed metering dish 2 is fixedly connected with the left end of the main shaft 8. A plurality of seed sucking holes 10 are uniformly distributed on the same circumference of the surface of the seed metering disc 2. The air baffle disc 3 is arranged between the seed metering device shell 4 and the seed metering disc 2, the right side surface of the air baffle disc 3 is closely attached to the left side surface of the seed metering disc 2, the air baffle disc and the seed metering disc can rotate relatively, the right side surface of the air baffle disc 3 is fixedly connected with the left opening part of the seed metering device shell 4, and the negative pressure chamber 5 on the seed metering device shell 4 is sealed. The middle part of the air baffle plate 3 is provided with a central hole 15 for passing through the main shaft 8.
Preferably, as shown in fig. 6, the side surface of the seed metering disc 2 is provided with a convex button 14, correspondingly, as shown in fig. 1, the inner side of the side surface of the seed metering device shell 4 is provided with a groove 6, and the convex button 14 can be embedded in the groove 6 to realize the relative fixation of the two.
The axis of the air blocking disc 3 coincides with the axis of the seed metering disc 2, and the disc surface of the air blocking disc 3 is provided with an arc-shaped groove which is communicated and tends to the center of a circle along the rotation direction. The arc-shaped grooves are positioned on the coincidence of the circular rings where the opening areas of the seed sucking holes 10 are positioned. The seed sucking holes 10 on the seed metering disc 2 are combined with the arc-shaped grooves to form effective seed sucking holes.
When the rotation direction of the seed metering disc 2 is from left to right and passes through the uppermost end of the air baffle disc 3, the inner side of the arc-shaped groove is overlapped with the outer side of the circular ring where the seed suction hole 10 is positioned, and the outer side of the arc-shaped groove is overlapped with the inner side of the circular ring where the seed suction hole 10 is positioned. Preferably, the change area of the arc-shaped groove is positioned in the range of 10 degrees to the left and right in the vertical direction.
Alternatively, when the width of the arc-shaped groove is smaller than the length of the seed suction hole 10 in the radial direction. The circumference of the air baffle plate 3 is approaching from the left side to the right side in the vertical direction, the arc-shaped groove approaches from the outer edge to the inner edge of the circular ring where the seed suction holes 10 are positioned, at this moment, the rotation direction of the seed metering plate 2 is from left to right, and when the seed metering plate passes through the upper end in the vertical direction, the stress area of seeds is continuously approaching to the circle center by the effective seed suction holes.
Preferably, two arc-shaped grooves of the air baffle disc 3 are respectively an inner arc-shaped groove 12 and an outer arc-shaped groove 13, and the inner arc-shaped groove 12 is positioned at the inner side of the outer arc-shaped groove 13. The inner arc-shaped groove 12 and the outer arc-shaped groove 13 have the same width and have a width of 4-6mm.
One end of the inner arc-shaped groove 12 is overlapped with one end of the outer arc-shaped groove 13 in the circumferential direction, and the overlapped area is in the range of 5-10 degrees of the circumference, wherein the overlapped area is in the range of 10 degrees to the left and right in the vertical direction. One non-coincident end of the inner arc groove 12 and the outer arc groove 13 is respectively coincident with the boundary of two ends of the negative pressure chamber.
The outer arc-shaped groove 13 and the inner arc-shaped groove 12 can be overlapped or separated in the radial direction. When the two are overlapped, the inner radius of the outer arc-shaped groove 13 is smaller than the outer radius of the inner arc-shaped groove 12 by 1-3mm; when the two are separated, the inner radius of the outer arc-shaped groove 13 is 1-3mm larger than the outer radius of the inner arc-shaped groove 12. Whether the outer arc-shaped groove 13 coincides with or is separated from the inner arc-shaped groove 12 in the radial direction, the distance between the outer side of the outer arc-shaped groove 13 and the inner side of the inner arc-shaped groove 12 in the radial direction is smaller than the length of the seed suction hole 10 in the radial direction.
The working principle is as follows:
the effective seed sucking hole of the modified hole air sucking type precise seed sowing device is formed by combining a seed sucking hole 10 on a seed sowing plate 2 and an arc-shaped groove on an air blocking plate 3. During operation, the negative pressure chamber is in a vacuum state under the action of the negative pressure fan, the effective seed sucking holes adsorb seeds through pressure difference, and the seeds are adsorbed on the effective seed sucking holes. When the structure of the inner arc-shaped groove and the outer arc-shaped groove is adopted, when the seed sucking holes rotate in the outer annular groove part, the effective seed sucking holes consist of seed sucking holes 10 and outer arc-shaped grooves 13, the radial size of the effective seed sucking holes is larger, and the positions of the seeds are deviated; when the seed sucking hole comes to the overlapping part of the top outer annular groove and the inner annular groove, the effective seed sucking hole consists of the seed sucking hole, the outer annular groove and the inner annular groove, the adsorption area of the seeds is increased, the seeds rotate around the seed sucking hole due to inertia and gravity, and the gravity center of the rotated seeds moves downwards to overlap with the inner annular groove; when the seed sucking hole continuously moves downwards, the effective seed sucking hole consists of a seed sucking hole 10 and an inner annular groove 12, the center of gravity of the seed coincides with the effective seed sucking hole, the seed is reliably adsorbed, when the seed sucking hole rotates to the tail end of the inner annular groove, the negative pressure chamber is stopped, the adsorption force of the seed is disappeared, and the seed is fed under the action of gravity.
Preferably, the seed metering disc 2 comprises an integrally formed column part 9 and a protruding part 11, the protruding part 11 is positioned on the left side of the column part 9, and the protruding part 11 is a conical or conical table. The seed sucking hole 10 is in a strip shape, the length direction of the seed sucking hole 10 coincides with the radial direction of the seed metering disc 2, and the seed sucking hole 10 starts from the protruding part 11 and ends at the column part 9.
The design has the advantages that seeds can be dragged when the seed sucking holes 10 positioned on the protruding parts 11 are upward, the seeds are prevented from falling, so that the seed leakage rate is reduced, and when the seed sucking holes 10 positioned on the protruding parts 11 are downward, the seeds can be guided to fall down and better slide into the seed discharging tube.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and the related workers can make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but includes all equivalent changes and modifications in shape, construction, characteristics and spirit according to the scope of the claims.
Claims (4)
1. The utility model provides a precision seed metering ware is inhaled to modified hole air, includes seed metering ware lid (1), seed metering dish (2), main shaft (8), seed metering ware shell (4), seed metering ware lid (1) and the left side fixed connection of seed metering ware shell (4), evenly distributed on the same circumference of seed metering dish (2) quotation a plurality of seed sucking holes (10), seed metering dish (2) are located the left side of seed metering ware lid (1) and are fixed connection with the right-hand member of main shaft (8), main shaft (8) are passed through bearing (7) and are rotated with seed metering ware shell (4) and are connected, and seed metering ware shell (4) are separated into normal pressure room and negative pressure room (5) through the baffle, its characterized in that:
the novel seed metering device is characterized in that a gas blocking disc (3) is arranged between the seed metering device shell (4) and the seed metering disc (2), the left side surface of the gas blocking disc (3) is fixedly connected with the right side of the seed metering device shell (4), the right side surface of the gas blocking disc (3) is tightly attached to the left end surface of the seed metering disc (2), a central hole (15) is formed in the center of the gas blocking disc (3) and is used for penetrating through a main shaft (8), the axial lead of the gas blocking disc (3) is overlapped with the axial lead of the seed metering disc (2), an arc-shaped groove which is communicated with the area corresponding to the negative pressure chamber (5) on the disc surface of the gas blocking disc (3) and tends to the center of a circle along the rotation direction is formed, the center of the arc-shaped groove is overlapped with the axis lead of the gas blocking disc (3) and the axis of the seed suction hole (10), the seed suction hole (10) and the arc-shaped groove form an effective seed suction hole, and the variable type hole suction precision device is in work.
2. The modified orifice air-aspiration type precise seed metering device of claim 1, wherein: the seed metering dish (2) includes integrated into one piece's cylinder portion (9) and bellying (11), and bellying (11) are located the left side of cylinder portion (9), bellying (11) are conical or toper platform, inhale kind hole (10) for rectangular shape to inhale kind hole (10) length direction and the radial direction coincidence of seed metering dish (2), inhale kind hole (10) and start in bellying (11) and end in cylinder portion (9).
3. The modified-pore air-aspiration precision seed metering device of claim 2, wherein:
the arc groove that keeps off gas dish (3) is equipped with two, is interior arc groove (12) and outer arc groove (13) respectively, and interior arc groove (12) are located outer arc groove (13) inboard, and the one end of interior arc groove (12) is in the circumferencial direction coincidence with the one end of outer arc groove (13), and the coincidence zone is the scope of place circumference 5 ~ 10, the coincidence zone is located 10 within the scope about the vertical direction, the non-coincident one end of interior arc groove (12) and outer arc groove (13) is with the both ends boundary coincidence in negative pressure room respectively.
4. A modified orifice air-aspiration precision seed metering device as set forth in claim 3, wherein:
the widths of the inner arc-shaped groove (12) and the outer arc-shaped groove (13) are the same, and the widths are 4-6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910330426.6A CN109874467B (en) | 2019-04-23 | 2019-04-23 | Modified hole air suction type precise seed sowing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910330426.6A CN109874467B (en) | 2019-04-23 | 2019-04-23 | Modified hole air suction type precise seed sowing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109874467A CN109874467A (en) | 2019-06-14 |
| CN109874467B true CN109874467B (en) | 2023-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910330426.6A Active CN109874467B (en) | 2019-04-23 | 2019-04-23 | Modified hole air suction type precise seed sowing device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112930789B (en) * | 2021-03-26 | 2022-06-14 | 山东理工大学 | Air-suction type precision seed sowing device for single-disc double-side seed sowing |
| CN115067029B (en) * | 2022-07-14 | 2023-09-19 | 内蒙古民族大学 | Corn and soybean composite planting seeder capable of adjusting distance |
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| CN209787818U (en) * | 2019-04-23 | 2019-12-17 | 山东理工大学 | Hole-changing air-suction type precision seed sowing device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050150442A1 (en) * | 2004-01-14 | 2005-07-14 | Enrique Friesen | Seed meter |
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2019
- 2019-04-23 CN CN201910330426.6A patent/CN109874467B/en active Active
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|---|---|---|---|---|
| CN2566601Y (en) * | 2002-09-11 | 2003-08-20 | 杨宛章 | Improved suction-assistant structure of suction seeding apparatus |
| CN2935757Y (en) * | 2006-08-04 | 2007-08-22 | 张国跃 | Air sucking internal filling seed type seed sowing device |
| CN200997764Y (en) * | 2007-01-25 | 2008-01-02 | 中国农业大学 | Wheat assembled sucking-hole gas-sucking type seeding apparatus |
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| CN109874467A (en) | 2019-06-14 |
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Effective date of registration: 20240102 Address after: 1609, building 3, yard 10, Ronghua South Road, Beijing Economic and Technological Development Zone, Daxing District, Beijing Patentee after: DEBONT Co.,Ltd. Address before: College of agricultural engineering and food science, Shandong University of technology, 266 Xincun West Road, Zhangdian District, Zibo City, Shandong Province Patentee before: Shandong University of Technology |