CN108781652B - Air-suction type precision seed-metering disk - Google Patents
Air-suction type precision seed-metering disk Download PDFInfo
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- CN108781652B CN108781652B CN201810816056.2A CN201810816056A CN108781652B CN 108781652 B CN108781652 B CN 108781652B CN 201810816056 A CN201810816056 A CN 201810816056A CN 108781652 B CN108781652 B CN 108781652B
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- air
- seed
- permanent magnet
- closing mechanism
- limiting device
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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 a part on an agricultural seeder, in particular to an air-suction type precision seed-metering disc which is suitable for the seed taking and throwing operation of the air-suction type precision seeder. The invention designs a non-contact seed throwing mechanism which mainly comprises a seed metering disc (1), an air chamber shell (8) and a rotary sealing wheel (10), wherein a first air closing mechanism (5) is of a hemispherical structure with a first circular air hole (19) in the middle and contains a permanent magnet ball (18), a second air closing mechanism (20) is of a semi-cylindrical structure with a second circular air hole (22) in the middle, a limiting device (21) extends out of the end part of the second circular air hole (22) and is fixedly provided with a permanent magnet sheet (23), and the first air hole (19) and the second air hole (22) can be sealed by the permanent magnet ball (18) and the permanent magnet sheet (23) under the action of a permanent magnet (6). The invention has the advantages that the designed non-contact seed feeding mechanism reduces the sliding friction force generated by the contact of the seed discharging disc and the air-closing block in the operation process of the prior air-suction type seed discharging device, and greatly improves the controllability and the accuracy of the air-suction type precise seed discharging driven by a land wheel or a motor.
Description
Technical Field
The invention belongs to agricultural machinery parts, and mainly relates to an air-suction type precision seed-metering disc mechanism.
Background
At present, the air-suction type precision seeder is one of the precision seeders commonly used in the agricultural machinery seeding, and has the advantages of seed saving, no damage to seeds, low requirement on the size of the seeds, strong adaptability, high operation speed and the like. The key part of the air-suction type precision seeder is a seed sowing device consisting of an air suction chamber, a seed sowing plate and a seed box, wherein a tractor drives a fan to form negative pressure in the air suction chamber, seeds are adsorbed through a seed suction hole on the seed sowing plate and are thrown in along with the rotation of the seed sowing plate, and thus the precision sowing requirement of one seed in each hole is realized. The prior art adopts a contact sliding mode in the seed feeding process of the air-suction type precision seed-metering device, namely, the seed-metering disc is contacted with the air-closing block to achieve the purpose of air-closing seed feeding, and the existing research technology also aims to enable the seed-metering disc and the air-closing block to be contacted with each other more closely, not to be influenced by factors such as external vibration and the like, and does not eliminate sliding friction between the seed-metering disc and the air-closing block. The invention provides the air-suction type precision seed discharging disc by carrying out brand new design on the seed feeding mechanism of the air-suction type precision seed discharging disc to overcome the defects.
Disclosure of Invention
The invention aims to design an air-aspiration type precision seed discharging disc, which adopts a non-contact type air-closing mode to replace a contact type sliding air-closing mode in the seed feeding process of the traditional air-aspiration type precision seed sowing machine and meets the requirement of agricultural seeding.
The purpose of the invention is realized as follows: an air-suction type precision seed discharging disc belongs to agricultural machinery parts and mainly comprises a seed discharging disc, an air chamber shell and a rotary sealing wheel, wherein a negative pressure air chamber is formed; the first air closing mechanism is of a hemispherical structure with a circular air hole I in the middle, a permanent magnet ball is arranged in the first air closing mechanism, the diameter of the permanent magnet ball is larger than that of the first air hole I and the diameter of the seed sucking port, the permanent magnet ball can freely move in the first air closing mechanism, the permanent magnet ball can completely close the first air hole under the action of a permanent magnet, and the diameter of the first air closing mechanism is 2.5-3 times of that of the permanent magnet ball; the second air closing mechanism is of a semi-cylindrical structure with a circular air hole II in the middle, the inner wall of the second air closing mechanism is smooth, a permanent magnet sheet is fixedly installed at the end part of the limiting device extending out of the circular air hole II, the diameter of the permanent magnet sheet is larger than that of the air hole II, the limiting device comprises two cross and ring structures with smooth outer walls, a certain moving range can be arranged along the inner wall of the second air closing mechanism, a certain distance is kept between the limiting device and the permanent magnet when the limiting device extends out completely, a gas channel of the air hole II shielded by the cross and ring structures of the limiting device is larger than a seed suction port, a structural space with enough flux is ensured, the bottom end of the limiting device does not contact with the seed metering disc when the limiting device contracts completely, and the second air hole can be completely closed; the outer wall of the rotary sealing wheel, the rotary sealing wheel and the inner wall of the rotary sealing wheel are rotary sealing bodies which are tightly matched, the outer wall of the rotary sealing wheel rotates around the rotary sealing wheel under the driving of a land wheel or a motor, and the inner wall of the rotary sealing wheel is fixedly arranged on the seeder frame and keeps a relatively static state with the outer wall of the rotary sealing wheel; the outer wall of the rotary sealing wheel or the outer wall of the air chamber shell is of a gear structure, and the air chamber shell and the seeding plate are driven to rotate by a transmission system to complete driving work; the air-suction type precision seed sowing disc and the air-suction type seed sowing device are made of nonmagnetic materials.
When the air-suction type precision seed discharging disc adopting the technical scheme works, one part of the closing device is fixedly arranged on the seed discharging disc, one part of the closing device is fixedly arranged on the fixed support along with the rotation of the disc and keeps relatively static, a certain distance exists between the air closing devices, the closing and the opening of the air closing holes are realized through the mutual repulsion of like magnetic poles and the mutual attraction of unlike magnetic poles, the purpose of seed feeding is achieved, and the friction force generated by the mutual contact sliding seed feeding between the air closing block and the feeding disc is effectively overcome.
Drawings
Fig. 1 is a schematic structural view of an air-suction type precision seed-metering disc.
FIG. 2 is a front view of a seed metering disk.
Fig. 3 is a front view of the seal ring.
FIG. 4 is a front view of the air chamber housing.
Fig. 5 is a front view of the air lock mechanism mounting ring.
Fig. 6 is a cross-sectional view of the a-a air-lock mechanism of fig. 5.
Fig. 7 is a cross-sectional view of the a-a air-lock mechanism of fig. 5.
Fig. 8 is a schematic structural view of the cross and ring limiting device.
Fig. 9 is a front view of the rotary seal.
Description of part numbers in the figures:
1. seed metering disc sheet 2, air-closing mechanism mounting ring 3, seed suction port 4, sealing ring 5, air-closing mechanism I, air-closing mechanism 6, permanent magnet 7, permanent magnet support 8, air chamber shell 9, rotary sealing wheel outer wall 10, rotary sealing wheel 11, rotary sealing wheel inner wall 12, air suction channel 13, negative pressure air chamber 14, connecting hole I, 15, connecting hole II, 16, connecting hole III, 17, connecting hole IV, 18, permanent magnet ball 19, air hole I, 20, air-closing mechanism II, 21, limiting device 22, air hole II, 23 and permanent magnet sheet.
Detailed Description
The following detailed description of the inventive embodiments is provided in connection with the accompanying drawings. An air-suction type precision seed-metering disk mainly comprises a seed-metering disk sheet 1, an air chamber shell 8 and a rotary sealing wheel 10, and form the negative pressure air chamber 13, the seeding disc 1 is fixedly connected with the end of the air chamber shell 8 through the first connecting hole 14 and the third connecting hole 16, the other end of the air chamber shell 8 is fixedly connected with the outer wall 9 of the rotary seal wheel, the first air-closing mechanism 5 or the second air-closing mechanism 20 is integrated with the mounting ring 2 of the air-closing mechanism, the seeding disc 1 is fixedly mounted with the mounting ring 2 of the air-closing mechanism through the second connecting hole 15 and the fourth connecting hole 17 at one side of the air chamber shell 8, the permanent magnet 6 is fixedly mounted at the end of the permanent magnet bracket 7, the other end of the permanent magnet bracket 7 is fixedly mounted on the inner wall 11, so that when the seed metering disc 1 rotates, the end part of the first air closing mechanism 5 or the second air closing mechanism 20 keeps a certain distance with the end part of the permanent magnet 6; the outer wall 9 of the rotary sealing wheel, the rotary sealing wheel 10 and the inner wall 11 of the rotary sealing wheel are tightly combined rotary sealing bodies, the outer wall 9 of the rotary sealing wheel rotates around the rotary sealing wheel 10, and the inner wall 11 of the rotary sealing wheel is fixedly arranged on a frame of the seeder and keeps a relative static state with the outer wall 9 of the rotary sealing wheel; the outer wall 9 of the rotary sealing wheel or the outer wall of the air chamber shell 8 is of a gear structure, and the air chamber shell 8 and the seeding plate 1 are driven to rotate by a ground wheel or a motor of a transmission system to complete the driving work.
Example 1
The air closing mechanism I5 is of a hemispherical structure with a circular air hole I19 in the middle, the permanent magnet ball 18 is arranged in the air closing mechanism I5, the diameter of the air closing mechanism I5 is 2.5-3 times of that of the permanent magnet ball 18, so that the ventilation quantity of the air closing mechanism I5 is guaranteed, and the permanent magnet ball 18 is guaranteed to have sufficient moving space, the permanent magnet ball 18 is a sphere, the diameter of the permanent magnet ball 18 is larger than that of the air hole I19 and that of the seed suction port 3, the permanent magnet ball 18 can freely move in the air closing mechanism I5, and the permanent magnet ball 18 can completely close the air hole I19 under the action of the permanent magnet 6.
During operation, the transmission mechanism drives the air-suction type precision seed-metering disc to rotate, air is discharged through the seed suction port 3, the air-closing mechanism I5, the air hole I19, the negative pressure air chamber 13 and the air suction channel 12 in sequence under the action of the fan, negative pressure is generated in the negative pressure air chamber 13, the seeds are sequentially adsorbed on the seed suction port 3 under the action of the negative pressure, in the process, because the mass of the permanent magnetic ball 18 is larger than that of the seeds, so that the seed is adsorbed and the permanent magnetic ball 18 moves freely in the air-closing mechanism-5, when the air-closing mechanism-5 passes near the permanent magnet 6, due to the interaction of magnetic force and the spherical structural characteristics of the gas-closing mechanism I5, the permanent magnetic ball 18 is adsorbed and fixed on the gas hole I19 to realize the functions of closing gas and dropping seeds, after passing through the permanent magnet 6, the permanent magnet ball 18 moves freely in the air-closing mechanism one 5 again due to the action of gravity and the spherical structural characteristics of the air-closing mechanism one 5.
In order to prevent the magnetic balls from contacting and interfering the seed suction ports 3, a limiting device can be added between the disk and the magnetic balls, and the length of the semicircular end part of the air closing mechanism 5 can be properly increased for increasing the longitudinal moving space of the permanent magnetic balls 18, so that the air closing mechanism 5 with a cylinder and semicircular structure is formed.
Example 2
The second air closing mechanism 20 is a semi-cylindrical structure with a circular air hole second 22 in the middle, a permanent magnet sheet 23 is fixedly installed at the end part of the limiting device 21 extending out of the circular air hole second 22, the diameter of the permanent magnet sheet 23 is larger than that of the air hole second 22, a certain distance is kept between the limiting device 21 and the permanent magnet 6 when the limiting device 21 extends out completely, the air passage of the air hole second 22 shielded by the cross-shaped and circular structure of the limiting device 21 is larger than the seed suction port 3, a structural space with enough flux is ensured, the bottom end of the limiting device 21 does not contact with the seed metering disc 1 when the limiting device 21 is completely contracted, the corresponding surfaces of the permanent magnet sheets 23 and the permanent magnet 6 are homopolar magnets and repel each other, the permanent magnet sheets 23 can completely close the air hole second 22 under the repulsion force of the permanent magnet 6, the inner wall of the second air closing mechanism 20 is smooth, the longitudinal movement of the, stop device 21 contains two smooth cross of outer wall and adds the ring structure, is convenient for spacing and gaseous passing through.
During operation, the transmission mechanism drives the air-suction type precision seed sowing plate to rotate, air is discharged through the seed suction port 3, the air closing mechanism II 20, the air hole II 22, the negative pressure air chamber 13 and the air suction channel 12 in sequence under the action of the fan, negative pressure is generated in the negative pressure air chamber 13, the seeds are adsorbed on the seed suction port 3 in sequence under the action of the negative pressure, in the process, the permanent magnet sheet 23 drives the limiting device 21 to extend out of the air hole II 22 under the action of the negative pressure, the cross and ring structure in the middle of the limiting device 21 limits the longitudinal extension of the limiting device 21, the cross and ring structure at the end part of the limiting device 21 limits the transverse swing of the end part of the limiting device 21, so that the limiting device 21 can keep a relatively good stable state, when the air closing mechanism II 20 passes through the permanent magnet 6, the permanent magnet sheet 23 is pressed on the air hole II 22 under the mutual repulsion action of homopolar magnetic force, after passing through the permanent magnet 6, the permanent magnet sheet 23 drives the limiting device 21 to extend out of the second air hole 22 again under the action of the negative pressure of the air chamber.
The air-suction type precision seed sowing disc and the air-suction type seed sowing device are made of nonmagnetic materials.
Although the invention has been described in detail with reference to the drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein without departing from the scope of the invention as defined in the appended claims.
Claims (3)
1. An air-aspiration type precision seed metering disc is characterized in that a seed metering disc (1) is fixedly provided with a second air closing mechanism (20) on one side of an air chamber shell (8) through a second air closing mechanism mounting ring (2), the second air closing mechanism (20) and the second air closing mechanism mounting ring (2) are integrated, and are fixedly arranged on one side, close to the air chamber shell (8), of the seed metering disc (1) through a second connecting hole (15) and a fourth connecting hole (17), a permanent magnet (6) is fixedly arranged at the end part of a permanent magnet support (7), and the other end of the permanent magnet support (7) is fixedly arranged on the inner wall (11) of a rotary sealing wheel; the second air closing mechanism (20) is of a semi-cylindrical structure with a circular air hole II (22) in the middle, the inner wall of the second air closing mechanism (20) is smooth, a permanent magnet sheet (23) is fixedly installed at the end part of the part, extending out of the circular air hole II (22), of the limiting device (21), the diameter of the permanent magnet sheet (23) is larger than that of the air hole II (22), the limiting device (21) comprises two cross and circular ring structures with smooth outer walls, a certain moving range can be formed along the inner wall of the second air closing mechanism (20), a certain distance is kept between the limiting device (21) and the permanent magnet (6) when the limiting device (21) is completely extended out, the air channel of the air hole II (22) shielded by the cross and circular ring structures of the limiting device (21) needs to be larger than the seed suction port (3), a structural space with enough flux is ensured, the bottom end of the limiting device (21) is not contacted with the seed metering air hole II (1) when the limiting device (21), during operation, gas is discharged through the seed suction port (3), the second gas closing mechanism (20), the second gas hole (22), the negative pressure gas chamber (13) and the gas suction channel (12) in sequence.
2. The air-aspiration type precision seed metering disc as claimed in claim 1, wherein the outer wall (9) of the rotary seal wheel or the outer wall of the air chamber shell (8) is of a gear structure, and the air chamber shell (8) and the seed metering disc (1) are driven to rotate by a transmission system to complete the seeding driving work.
3. The air-aspiration type precision seed plate according to claim 1, characterized in that the air-aspiration type precision seed plate mainly comprises a seed plate sheet (1), an air chamber shell (8) and a rotary sealing wheel (10); the air-suction type precision seed sowing plate and the air-suction type seed sowing device are made of nonmagnetic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810816056.2A CN108781652B (en) | 2018-07-24 | 2018-07-24 | Air-suction type precision seed-metering disk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810816056.2A CN108781652B (en) | 2018-07-24 | 2018-07-24 | Air-suction type precision seed-metering disk |
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| Publication Number | Publication Date |
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| CN108781652A CN108781652A (en) | 2018-11-13 |
| CN108781652B true CN108781652B (en) | 2021-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810816056.2A Active CN108781652B (en) | 2018-07-24 | 2018-07-24 | Air-suction type precision seed-metering disk |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111034415B (en) * | 2020-01-06 | 2023-08-29 | 东北农业大学 | High-speed seeder on ejection type air suction film |
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| CN1370730A (en) * | 2001-02-26 | 2002-09-25 | 江苏美星顺峰机械有限公司 | Magnetic filling valve |
| CN201674777U (en) * | 2010-06-03 | 2010-12-22 | 刘建坡 | Precision corn seeder |
| CN102696309A (en) * | 2012-06-18 | 2012-10-03 | 陈恒 | Pneumatic precision seed-extracting mechanism |
| WO2012142558A1 (en) * | 2011-04-15 | 2012-10-18 | Agco Corporation | Integral seed meter drive motor |
| RU2567025C1 (en) * | 2014-10-21 | 2015-10-27 | Федеральное государственное бюджетное научное учреждение Всероссийский научно-исследовательский институт механизации сельского хозяйства (ФГБНУ ВИМ) | Pneumatic device for sowing seeds |
| CN105165189A (en) * | 2015-10-29 | 2015-12-23 | 东北农业大学 | Air suction type electric seed discharge plate |
| CN106105515A (en) * | 2016-08-22 | 2016-11-16 | 刘建坡 | A kind of Pneumatic type precision seeding machine |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105534321A (en) * | 2015-12-31 | 2016-05-04 | 上海纯米电子科技有限公司 | Electric cooker capable of inhibiting bacterium breeding during reservation and heat preservation and method thereof |
| CN106983360A (en) * | 2017-05-25 | 2017-07-28 | 德奥通用航空股份有限公司 | Novel pot tool with pressure control structure |
| CN206895666U (en) * | 2017-06-26 | 2018-01-19 | 湖南信息学院 | A kind of timing mosquito repellent coil disc |
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2018
- 2018-07-24 CN CN201810816056.2A patent/CN108781652B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1370730A (en) * | 2001-02-26 | 2002-09-25 | 江苏美星顺峰机械有限公司 | Magnetic filling valve |
| CN201674777U (en) * | 2010-06-03 | 2010-12-22 | 刘建坡 | Precision corn seeder |
| WO2012142558A1 (en) * | 2011-04-15 | 2012-10-18 | Agco Corporation | Integral seed meter drive motor |
| CN102696309A (en) * | 2012-06-18 | 2012-10-03 | 陈恒 | Pneumatic precision seed-extracting mechanism |
| RU2567025C1 (en) * | 2014-10-21 | 2015-10-27 | Федеральное государственное бюджетное научное учреждение Всероссийский научно-исследовательский институт механизации сельского хозяйства (ФГБНУ ВИМ) | Pneumatic device for sowing seeds |
| CN105165189A (en) * | 2015-10-29 | 2015-12-23 | 东北农业大学 | Air suction type electric seed discharge plate |
| CN106105515A (en) * | 2016-08-22 | 2016-11-16 | 刘建坡 | A kind of Pneumatic type precision seeding machine |
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| CN108781652A (en) | 2018-11-13 |
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Inventor after: Zhang Jicheng Inventor after: Wang Dan Inventor after: Meng Fanfeng Inventor after: Zheng Ping Inventor after: Hou Shouyin Inventor after: Ji Wenyi Inventor before: Zhang Jicheng Inventor before: Meng Fanfeng Inventor before: Zheng Ping Inventor before: Hou Shouyin Inventor before: Ji Wenyi |
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