CN114731809A - Auxiliary seed supporting air-suction type vegetable precision seed sowing device - Google Patents
Auxiliary seed supporting air-suction type vegetable precision seed sowing device Download PDFInfo
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- CN114731809A CN114731809A CN202210517396.1A CN202210517396A CN114731809A CN 114731809 A CN114731809 A CN 114731809A CN 202210517396 A CN202210517396 A CN 202210517396A CN 114731809 A CN114731809 A CN 114731809A
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- 238000009331 sowing Methods 0.000 title claims abstract description 61
- 235000013311 vegetables Nutrition 0.000 title claims abstract description 18
- 238000007599 discharging Methods 0.000 claims abstract description 17
- 238000010899 nucleation Methods 0.000 claims description 16
- 238000004140 cleaning Methods 0.000 claims description 13
- 239000012535 impurity Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 4
- 238000001179 sorption measurement Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
- 238000011161 development Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000004047 hole gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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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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- 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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- Life Sciences & Earth Sciences (AREA)
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- Environmental Sciences (AREA)
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Abstract
The invention discloses an auxiliary seed supporting air-suction type vegetable precision seed sowing device which comprises an input shaft, a seed sowing device main shell, a limiting disc, a seed sowing disc, a fastening nut, a seed discharging mechanism and a suction chamber shell, wherein the input shaft is connected with the seed sowing device main shell; the suction chamber shell is internally provided with an air chamber, the unloading mechanism is arranged on the suction chamber shell through screws and bolts, and the suction chamber shell is arranged on the main shell of the seed sowing device; a seed chamber is arranged in the main shell of the seed sowing device; the input shaft sequentially penetrates through and is connected with the central hole of the seed metering device main shell body, the limiting disc and the seed metering disc, the seed metering disc and the seed metering device main shell body are limited through the limiting disc, the limiting disc is fastened on the input shaft through threaded fit, and the seed metering disc is fastened with the fastening nut through external threads at the tail end of the input shaft in a matched mode. The invention has simple and compact structure and convenient installation and maintenance, and the seed supporting spoon structure for assisting seed supporting can obviously improve the performance of the seed sowing device, reduce the required air pressure, improve the single seed rate and the seed sowing uniformity and reduce the phenomena of reseeding and missed sowing.
Description
Technical Field
The invention belongs to the technical field of precision seeding equipment, and particularly relates to an auxiliary seed supporting air-suction type precision seed sowing device for vegetables.
Background
Precision seeding is the main development trend of direct seeding operation of vegetable fields, and the seeding quality mainly depends on the performance of a precision seed sowing device. The precision seed-metering device is used as a core component of a seeding machine, and plays a key role in effectively separating single seeds, stably and orderly transporting the seeds and delivering the seeds in precision and order. The air-suction seeding device avoids the damage of a mechanical structure to seeds due to the advantages of air flow adsorption seeding, has the characteristics of wide adaptability, suitability for high-speed operation, high operation precision and the like, and is a main trend of future development. However, at present, under the condition of high seeding frequency, the seed filling and cleaning performance of the pneumatic seeding apparatus is poor, and the problems of common seeding leakage phenomenon and uneven seeding exist.
Disclosure of Invention
The invention mainly aims to overcome the defects in the prior art, and provides an auxiliary seed supporting air-suction type vegetable precision seed-metering device, which improves the seed filling and seed cleaning performance of the seed-metering device, improves the seed-metering uniformity and improves the single-grain rate.
In order to achieve the purpose, the invention adopts the following technical scheme:
an auxiliary seed supporting air-suction type precision vegetable seed sowing device comprises an input shaft, a seed sowing device main shell, a limiting disc, a seed sowing disc, a fastening nut, a seed discharging mechanism and a suction chamber shell;
the suction chamber shell is internally provided with an air chamber, the unloading mechanism is arranged on the suction chamber shell through screws and bolts, and the suction chamber shell is arranged on the main shell of the seed sowing device;
a seed chamber is arranged in the main shell of the seed sowing device;
the input shaft sequentially penetrates through and is connected with the central hole of the seed metering device main shell body, the limiting disc and the seed metering disc, the seed metering disc and the seed metering device main shell body are limited through the limiting disc, the limiting disc is fastened on the input shaft through threaded fit, and the seed metering disc is fastened with the fastening nut through external threads at the tail end of the input shaft in a matched mode.
Further, a T-shaped rubber buckle is arranged, and the seed sowing device main shell and the suction chamber shell are fixedly clamped through the T-shaped rubber buckle;
the seeding unit main shell is symmetrically provided with hinges hinged with the small end of the T-shaped rubber buckle, and the suction chamber shell is provided with a T-shaped groove clamped with the large end of the T-shaped rubber buckle.
Further, inhale the air chamber in the room casing and specifically be 250 to 270 arc air chambers, the air chamber bottom is equipped with the air inlet, provides the negative pressure through pipe connection air pump.
Furthermore, a screw hole and an arc-shaped slotted hole are formed in the suction chamber shell and used for mounting a seed discharging mechanism.
Furthermore, a sealing air cushion is arranged outside the arc-shaped air chamber of the suction chamber shell.
Further, a seed blocking brush, an impurity removing brush and a seed cleaning knife are also arranged;
the brush is mounted on the main shell of the seed sowing device through a screw, and the brush is contacted with the seed sowing disk;
the impurity removing brush is arranged on the main shell of the seed sowing device through a screw, and the brush is contacted with the seed sowing disk;
the seed clearing knife is arranged on the main shell of the seed sowing device through a screw and a bolt, and the seed clearing knife does circular motion relative to the seed sowing disk when in work.
Furthermore, the back of the seed cleaning knife is arc-shaped, the cutting edge is saw-toothed, one side of the cutting edge is provided with a 60-degree inclination angle, and two sides of the seed cleaning knife are respectively provided with a through hole and an arc-shaped slotted hole.
Furthermore, the suction holes are uniformly distributed on the circumference of the seed discharging disc, the side of the suction hole seed chamber is provided with a chamfer angle, so that seeds can be conveniently adsorbed, and the side of the suction hole gas chamber is a conical groove hole.
Further, unload the mechanism by base, round pin axle, bracing piece, spring and strike the kind of a wheel and constitute, strike kind of a wheel by seed metering dish rotary drive, strike kind of a wheel teeth of a wheel with inhale the hole and mesh mutually, strike kind of a wheel and should seed metering dish follow the hole interval of inhaling of circumferencial direction unanimous along the teeth of a wheel interval of circumferencial direction, satisfy the formula:
wherein R isaThe base radius of the knock wheel; r isaThe base radius of the knock wheel; and z is the number of knock-out wheel teeth.
Furthermore, the wheel knocking wheel teeth are meshed with the suction holes, so that impurities in the seeds and the suction holes are knocked out;
seed sowing dish seed cavity side, every inhales the hole side and all has the seed supporting spoon structure, and seed supporting spoon protrusion in quotation, spoon head have with inhale the coaxial arc surface in hole, and the during operation, seed supporting spoon body disturbance seed group reduces and is adsorbed the seed resistance that the seed received, and the cambered surface is lifted and is supported and adsorbed the seed, prevents to drop.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the invention designs the seed discharging plate with the auxiliary seed supporting structure, the structure disturbs the seeds around the suction holes during seed filling, reduces the interference of other seeds in the process that the seeds move towards the suction holes, and simultaneously plays a role in supporting and holding the seeds in an auxiliary way, so that the seeds have certain initial speed and are easier to be captured by the suction holes. The structure can reduce the required air pressure, thereby saving energy and reducing the phenomenon of missed seeding.
2. The invention designs the stepped arc seed cleaning cutter with the edge having the inclination angle, and can effectively clean the redundant seeds adsorbed in the suction holes due to overlarge negative pressure of the air chamber, thereby reducing the reseeding phenomenon.
3. The invention designs a seed discharging mechanism consisting of a seed knocking wheel and a supporting mechanism thereof; when the seeds are sowed, the teeth of the seed knocking wheel are meshed with the suction holes, and the teeth of the wheel push out the seeds in the suction holes, so that impurities in the suction holes are removed while uniform sowing is ensured, and the missed sowing caused by the blockage of the suction holes is prevented.
Drawings
FIG. 1 is an exploded view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a cross-sectional view of the present invention;
FIG. 4 is a schematic perspective view of the present invention;
FIG. 5 is a side view of a seed metering disk chamber of the present invention;
FIG. 6 is a side view of an air chamber of a seed plate of the present invention;
FIG. 7 is a schematic view of the seed clearing blade of the present invention;
FIG. 8 is a schematic view of a discharge mechanism of the present invention;
the reference numbers illustrate: 1-an input shaft; 2-a seed sowing device main shell; 3-seed blocking brush; 4-removing impurities with a brush; 5-limiting disc; 6-seed sowing plate; 7-seed cleaning knife; 8-tightening the nut; 9-sealing the air cushion; 10-seed unloading mechanism; 11-a suction chamber housing; 12-T type rubber button; 101-a base; 102-a pin shaft; 103-a support bar; 104-a spring; 105-knock off the wheel.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited thereto.
Examples
As shown in fig. 1, 2, 3 and 4, the invention provides an auxiliary seed supporting air-suction type vegetable precision seed-metering device, which comprises an input shaft 1, a seed-metering device main shell 2, a hair baffle brush 3, an impurity removal brush 4, a limiting disc 5, a seed-metering disc 6, a seed-cleaning knife 7, a fastening nut 8, a sealing air cushion 9, a seed discharging mechanism 10, a suction chamber shell 11 and a T-shaped rubber buckle 12.
Wherein, an arc-shaped air chamber with an angle of 250-270 degrees is arranged in the suction chamber shell 11, the bottom end of the air chamber is provided with an air inlet, and the air inlet is connected with an air pump through a pipeline to provide negative pressure; the suction chamber shell is also internally provided with a screw hole and an arc-shaped slotted hole for mounting a seed discharging mechanism. The seed discharging mechanism 10 is mounted on the suction chamber housing 11 by screws or bolts.
The suction chamber shell is clamped and fixed with the main shell of the seeding unit through a T-shaped rubber buckle. The T-shaped rubber button is easy to buckle and release, and is convenient for opening the seed sowing device, disassembling the seed sowing disc and other parts. The seeding unit main shell 2 is symmetrically provided with a hinge hinged with the small end of the T-shaped rubber buckle, and the suction chamber shell is symmetrically provided with a T-shaped groove clamped with the large end of the T-shaped rubber buckle.
A seed chamber is arranged in the seed sowing device main shell 2.
As shown in fig. 3, the input shaft 1 sequentially passes through and is connected with a central hole of the seed metering device main shell 2, a limiting disc 5 and a seed metering disc 6; the seed metering disc and the seed metering device main shell are limited through the limiting disc, the limiting disc is fastened on the input shaft through thread matching, and the seed metering disc is fastened with the fastening nut through external threads at the tail end of the input shaft in a matching mode.
The seed blocking brush and the impurity removing brush are arranged on the main shell of the seed sowing device through screws, and the brush hair is contacted with the seed sowing disk;
the seed cleaning knife 7 is arranged on the main shell 2 of the seed sowing device through screws and bolts, and the seed cleaning knife 7 does circular motion relative to the seed sowing disk 6 during operation.
In this embodiment, a certain gap is formed between the seed plate and the air chamber due to processing and assembly errors of parts, and a sealing air cushion is installed outside the arc-shaped air chamber of the suction chamber housing to prevent the over-large gap from causing the under-small negative pressure of the air chamber or uneven negative pressure due to vibration.
In this embodiment, the seed-metering disk is uniformly provided with suction holes on the circumference, as shown in fig. 5 and 6, the sides of the suction holes and the seed chamber are provided with chamfers to facilitate the adsorption of seeds, and the sides of the suction holes and the gas chamber are provided with tapered slots, so that during operation, the teeth of the seed knocking wheel are engaged with the suction holes to knock out the seeds and impurities in the suction holes; seed metering dish seed cell side, every inhales the other seed spoon structure that all has of hole, and the seed spoon that holds in the palm is the spoon form, protrusion in the quotation, and the spoon head has with inhales the coaxial arc surface in hole, and the during operation, the seed spoon body disturbance seed group reduces and is adsorbed the seed resistance that the seed receives, and the cambered surface is lifted to support and is adsorbed the seed, prevents to drop.
In this embodiment, as shown in fig. 7, the seed clearing knife has a circular-arc-shaped back, a saw-toothed blade with an inclination angle of about 60 ° on one side, through holes and arc-shaped slots on both sides of the knife, which are fastened in the main casing of the seed metering device by screws and bolts, respectively, and the distance between the seed clearing knife and the suction hole on the seed metering disc is conveniently adjusted. When the device works, for a suction hole for adsorbing a plurality of seeds, the blade impacts redundant seeds in the suction hole for many times so as to ensure the single seed rate; for the suction hole for absorbing single seed, the blade edge will not contact with the seed.
In the present embodiment, as shown in fig. 8, the seed discharging mechanism is composed of a base 101, a pin 102, a support rod 103, a spring 104 and a seed knocking wheel 105; the seed knocking wheel is rotationally driven by the seed discharging disc, the teeth of the seed knocking wheel are meshed with the suction holes, the distance between the teeth of the seed knocking wheel along the circumferential direction is consistent with the distance between the suction holes of the seed discharging disc along the circumferential direction, and the formula is satisfied:
wherein R isaThe radius of a base circle of the knocking wheel is in unit mm; r isaThe radius of a base circle of the knocking wheel is in unit mm; and z is the number of knock-out wheel teeth.
When the vacuum sucking chamber works, the air pump is connected with the air inlet of the sucking chamber shell through the negative pressure pipeline and is communicated with the arc air chamber, so that the required vacuum degree is formed in the arc air chamber; the input shaft drives the seed plate to rotate, and the suction holes on the seed plate perform circular motion.
In the seed suction stage, the suction holes enter the arc-shaped air chamber, the seed supporting spoon bodies on the seed feeding chamber side of the seed discharging plate disturb seed groups, resistance to adsorbed seeds is reduced, the arc surfaces of the seed supporting spoons support the adsorbed seeds to prevent the adsorbed seeds from falling off, and the adsorbed seeds do circular motion along with the suction holes. In the seed cleaning stage, when the seeds circularly move through the seed metering knife, the single seeds adsorbed in the suction holes can not contact with the cutting edge, once a plurality of seeds are adsorbed in the suction holes, the cutting edge impacts the seeds in the suction holes for a plurality of times due to the influence of spatial positions, so that redundant seeds are removed, the reseeding is reduced, and the single seed rate is improved. In the seed sowing stage, the suction holes absorb seeds to do circular motion, the seeds leave the air chamber and pass through the seed discharging mechanism, the gear teeth of the seed knocking wheel are meshed with the suction holes of the seed sowing plate, the gear teeth knock out the seeds or impurities which do not naturally fall in the suction holes, and the miss-sowing phenomenon is reduced.
It should also be noted that in this specification, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An auxiliary seed supporting air-suction type vegetable precision seed sowing device is characterized by comprising an input shaft, a seed sowing device main shell, a limiting disc, a seed sowing disc, a fastening nut, a seed discharging mechanism and a suction chamber shell;
the suction chamber shell is internally provided with an air chamber, the unloading mechanism is arranged on the suction chamber shell through screws and bolts, and the suction chamber shell is arranged on the main shell of the seed sowing device;
a seed chamber is arranged in the main shell of the seed sowing device;
the input shaft sequentially penetrates through and is connected with the central hole of the seed metering device main shell body, the limiting disc and the seed metering disc, the seed metering disc and the seed metering device main shell body are limited through the limiting disc, the limiting disc is fastened on the input shaft through threaded fit, and the seed metering disc is fastened with the fastening nut through external threads at the tail end of the input shaft in a matched mode.
2. The auxiliary seed supporting and air suction type vegetable precision seed sowing device according to claim 1, characterized in that a T-shaped rubber buckle is further arranged, and the seed sowing device main shell and the suction chamber shell are fixedly clamped through the T-shaped rubber buckle;
the seeding unit main shell is symmetrically provided with hinges hinged with the small end of the T-shaped rubber buckle, and the suction chamber shell is provided with a T-shaped groove clamped with the large end of the T-shaped rubber buckle.
3. The auxiliary seed supporting and air suction type vegetable precision seed sowing device as claimed in claim 1, wherein the air chamber in the suction chamber shell is an arc-shaped air chamber with an angle of 250-270 °, and the bottom end of the air chamber is provided with an air inlet connected with an air pump through a pipeline to provide negative pressure.
4. The auxiliary seed supporting air-suction type vegetable precision seed-metering device as claimed in claim 1, wherein the suction chamber shell is provided with a screw hole and an arc-shaped slotted hole for mounting a seed discharging mechanism.
5. The auxiliary seed supporting air-suction type vegetable precision seed-metering device as claimed in claim 3, wherein a sealing air cushion is installed outside the arc-shaped air chamber of the suction chamber shell.
6. The auxiliary seed supporting air-suction type vegetable precision seed-metering device according to claim 1, characterized in that a seed blocking brush, an impurity removing brush and a seed cleaning knife are further arranged;
the brush hair is arranged on the main shell of the seed sowing device through a screw, and the brush hair is contacted with the seed sowing disc;
the impurity removing brush is arranged on the main shell of the seed sowing device through a screw, and the brush is contacted with the seed sowing disk;
the seed clearing knife is arranged on the main shell of the seed sowing device through a screw and a bolt, and the seed clearing knife does circular motion relative to the seed sowing disk when in work.
7. The auxiliary seed supporting air-suction type precision vegetable seed sowing device according to claim 6, wherein the back of the seed cleaning knife is arc-shaped, the blade is saw-toothed, one side of the blade has an inclination angle of 60 degrees, and both sides of the knife are respectively provided with a through hole and an arc-shaped slotted hole.
8. The auxiliary seed supporting and air suction type vegetable precision seed sowing device according to claim 1, wherein the seed sowing disc is evenly provided with suction holes on the circumference, the side of the seed chamber of the suction holes is provided with a chamfer angle for facilitating the adsorption of seeds, and the side of the gas chamber of the suction holes is provided with a conical slot hole.
9. The auxiliary seed supporting air-suction type vegetable precision seed sowing device according to claim 8, characterized in that the seed discharging mechanism is composed of a base, a pin shaft, a supporting rod, a spring and a seed knocking wheel, the seed knocking wheel is rotationally driven by the seed sowing plate, the teeth of the seed knocking wheel are meshed with the suction holes, the teeth of the seed knocking wheel along the circumferential direction are consistent with the suction holes of the seed sowing plate along the circumferential direction, and the formula is satisfied:
wherein R isaThe base radius of the knock wheel; r isaThe base radius of the knock wheel; z is the number of knock-on wheel teeth.
10. The auxiliary seed supporting air-suction type vegetable precision seed-metering device as claimed in claim 9, wherein the teeth of the seed striking wheel are meshed with the suction hole to knock out the impurities in the seeds and the suction hole;
seed sowing dish seed cavity side, every inhales the hole side and all has the seed supporting spoon structure, and seed supporting spoon protrusion in quotation, spoon head have with inhale the coaxial arc surface in hole, and the during operation, seed supporting spoon body disturbance seed group reduces and is adsorbed the seed resistance that the seed received, and the cambered surface is lifted and is supported and adsorbed the seed, prevents to drop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210517396.1A CN114731809A (en) | 2022-05-13 | 2022-05-13 | Auxiliary seed supporting air-suction type vegetable precision seed sowing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210517396.1A CN114731809A (en) | 2022-05-13 | 2022-05-13 | Auxiliary seed supporting air-suction type vegetable precision seed sowing device |
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| CN114731809A true CN114731809A (en) | 2022-07-12 |
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| CN202210517396.1A Pending CN114731809A (en) | 2022-05-13 | 2022-05-13 | Auxiliary seed supporting air-suction type vegetable precision seed sowing device |
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| US5740747A (en) * | 1996-08-20 | 1998-04-21 | Case Corporation | Vacuum seed metering assembly |
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| CN103355032A (en) * | 2013-05-30 | 2013-10-23 | 中国农业大学 | Pneumatic composite hole-type maize precision metering device |
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| CN107896587A (en) * | 2017-12-19 | 2018-04-13 | 中国农业大学 | A kind of aspirated-air type high speed precise seeder with auxiliary seed-filling effect discharge plate |
| CN208258376U (en) * | 2018-06-08 | 2018-12-21 | 荆州市凯利机械制造有限公司 | A kind of feed mechanism for seed of air-aspiration type precision planter |
| CN109716902A (en) * | 2019-02-11 | 2019-05-07 | 山东省农业机械科学研究院 | Air-suction seeding unit for peanut seeding disturbs discharge plate certainly |
| CN111642193A (en) * | 2020-06-24 | 2020-09-11 | 山东省农业机械科学研究院 | Pneumatic centralized-discharging electric-driving type seed metering device, system and method for grains |
| CN112369169A (en) * | 2020-11-24 | 2021-02-19 | 河南农业大学 | Auxiliary seed filling air suction type precise seed sowing device with negative pressure air chamber concave-convex sealing structure |
| CN212753205U (en) * | 2020-07-09 | 2021-03-23 | 内蒙古农业大学 | Pneumatic type small-particle-size seed precision seed discharging plate |
| CN213523045U (en) * | 2020-10-28 | 2021-06-25 | 河北宗亚农业机械有限公司 | Double leak-proof suction seed disc and air-suction type double-seedling-belt seed sowing device applying same |
| CN213586874U (en) * | 2020-09-09 | 2021-07-02 | 石河子大学 | Mechanical and pneumatic combined hill planter |
-
2022
- 2022-05-13 CN CN202210517396.1A patent/CN114731809A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5740747A (en) * | 1996-08-20 | 1998-04-21 | Case Corporation | Vacuum seed metering assembly |
| CN102577716A (en) * | 2012-03-20 | 2012-07-18 | 中国农业大学 | Air suction and mechanical auxiliary planting combined type corn precision seed-metering device and seed metering method thereof |
| CN103355032A (en) * | 2013-05-30 | 2013-10-23 | 中国农业大学 | Pneumatic composite hole-type maize precision metering device |
| CN103503612A (en) * | 2013-09-11 | 2014-01-15 | 中国农业大学 | Airflow disturbance precision seed sowing device |
| CN106068826A (en) * | 2016-06-20 | 2016-11-09 | 山东省农业机械科学研究院 | Secondary auxiliary is inhaled and is planted from disturbance discharge plate |
| CN107615952A (en) * | 2017-10-13 | 2018-01-23 | 吉林省康达农业机械有限公司 | Blowing-type metering device |
| CN107852912A (en) * | 2017-12-12 | 2018-03-30 | 内蒙古农业大学 | A kind of small particle precise seeder of aspiration baler combination |
| CN107896587A (en) * | 2017-12-19 | 2018-04-13 | 中国农业大学 | A kind of aspirated-air type high speed precise seeder with auxiliary seed-filling effect discharge plate |
| CN208258376U (en) * | 2018-06-08 | 2018-12-21 | 荆州市凯利机械制造有限公司 | A kind of feed mechanism for seed of air-aspiration type precision planter |
| CN109716902A (en) * | 2019-02-11 | 2019-05-07 | 山东省农业机械科学研究院 | Air-suction seeding unit for peanut seeding disturbs discharge plate certainly |
| CN111642193A (en) * | 2020-06-24 | 2020-09-11 | 山东省农业机械科学研究院 | Pneumatic centralized-discharging electric-driving type seed metering device, system and method for grains |
| CN212753205U (en) * | 2020-07-09 | 2021-03-23 | 内蒙古农业大学 | Pneumatic type small-particle-size seed precision seed discharging plate |
| CN213586874U (en) * | 2020-09-09 | 2021-07-02 | 石河子大学 | Mechanical and pneumatic combined hill planter |
| CN213523045U (en) * | 2020-10-28 | 2021-06-25 | 河北宗亚农业机械有限公司 | Double leak-proof suction seed disc and air-suction type double-seedling-belt seed sowing device applying same |
| CN112369169A (en) * | 2020-11-24 | 2021-02-19 | 河南农业大学 | Auxiliary seed filling air suction type precise seed sowing device with negative pressure air chamber concave-convex sealing structure |
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Application publication date: 20220712 |