CN106612788A - Air-suction seed suction roller type wide-seedling-zone wheat seed sowing device - Google Patents
Air-suction seed suction roller type wide-seedling-zone wheat seed sowing device Download PDFInfo
- Publication number
- CN106612788A CN106612788A CN201710085757.9A CN201710085757A CN106612788A CN 106612788 A CN106612788 A CN 106612788A CN 201710085757 A CN201710085757 A CN 201710085757A CN 106612788 A CN106612788 A CN 106612788A
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- Prior art keywords
- seed
- transmission shaft
- power transmission
- pressure release
- drum
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- 238000009331 sowing Methods 0.000 title abstract description 6
- 241000209140 Triticum Species 0.000 title abstract description 5
- 235000021307 Triticum Nutrition 0.000 title abstract description 5
- 230000005540 biological transmission Effects 0.000 claims abstract description 49
- 210000000582 semen Anatomy 0.000 claims description 28
- 238000007789 sealing Methods 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 3
- 238000010899 nucleation Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 241000721671 Ludwigia Species 0.000 abstract 7
- 238000004140 cleaning Methods 0.000 abstract 3
- 241000196324 Embryophyta Species 0.000 description 15
- 238000005516 engineering process Methods 0.000 description 3
- 235000013339 cereals Nutrition 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000010871 livestock manure Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Sowing (AREA)
Abstract
The invention provides an air-suction roller type wide-seedling-zone wheat seed sowing device. According to the seed sowing device, operations such as seed dressing, seed suction, seed cleaning and seed sowing can be completed in one time, the unevenness of growth vigor of seedlings can be avoided, the seeding quality is effectively improved, wheat is promoted to grow better, and the effect of increasing both production and income is achieved. The seed sowing device comprises a seed box mechanism, a seed suction roller mechanism, a seed cleaning plate, a positive-pressure inflating mechanism and a pressure relief mechanism, wherein the seed box mechanism comprises a seed box and a seed position adjusting plate arranged in the seed box; the seed suction roller mechanism comprises a seed suction roller and a transmission shaft arranged at the axis of the seed suction roller; the seed cleaning plate is arranged at the circumferential outer side of the seed suction roller and is connected with the seed box; the positive-pressure inflating mechanism is located at the bottom of the seed box and comprises a positive-pressure air inlet pipe and a positive-pressure chamber, the positive-pressure chamber has an air inlet and an air outlet, the air inlet communicates with the positive-pressure air inlet pipe, and the air outlet communicates with the seed box; and the pressure relief mechanism comprises a pressure relief wheel supporting plate connected with the transmission shaft, a pressure relief wheel combination arranged on the pressure relief wheel supporting plate and a tension spring connecting the pressure relief wheel supporting plate and the pressure relief wheel combination.
Description
Technical field
The present invention relates to a kind of Semen Tritici aestivi feed mechanism for seed, and in particular to a kind of aspiration inhales kind of a drum-type width Seedling band Semen Tritici aestivi feed mechanism for seed,
Belong to agricultural machinery technological field.
Background technology
Wheat wide seedling belt precise sowing can be such that seed is uniformly distributed in field, form excellent population structure, be conducive to
Ventilation and penetrating light in wheat population canopy, each plant can obtain enough room and space, draw to greatest extent
Liquid manure, makes individual growth development healthy and strong, effectively carries out tiller, improves the mature spike number amount of Semen Tritici aestivi, and fringe is big, grain foot, plays volume increase, increases
The effect of receipts, while reducing application rate, reduces operating cost.
The wide Seedling band seeding machinary that can be retrieved at present has Shandong Agricultural University and the research of Agriculture in Shandong Province machine science
Shortcoming is also compared in the wide Seedling band seeder of the units such as institute research and development and key operation part, the research and development of this respect equipment.
Aspiration inhales kind of a drum-type feed mechanism for seed and can adapt to seed of different shapes, is the focus of domestic and international research, but existing
Aspiration inhale that kind of a drum-type feed mechanism for seed has that air leakage is big, uneven, rotations of inhaling kind of insufficient, seeding be dumb and abrasion sternly
The problems such as weight.
The content of the invention
It is an object of the present invention to provide a kind of pneumatic drum type width Seedling band Semen Tritici aestivi feed mechanism for seed, can disposably complete to disturb kind, inhale
Kind, it is clear plant and the operation such as seeding, seedling growth can be avoided uneven, and from effectively improving seeding quality, promote Semen Tritici aestivi more preferable
Ground growth, plays the effect of increasing both production and income.
To achieve these goals, the present invention is employed the following technical solutions：
A kind of aspiration inhales kind of a drum-type width Seedling band Semen Tritici aestivi feed mechanism for seed, including kind of a draw box mechanism, including kind of case and is arranged in kind of case
Plant position adjustable plate；Kind of a cylinder mechanism is inhaled, including is inhaled kind of cylinder and the power transmission shaft for inhaling kind of cylinder axis is set；It is clear to plant plate, it is arranged on
Kind of a suction kind roll circumference outside is inhaled, and is connected with kind of a case；Malleation inflation mechanism, positioned at kind of a bottom portion, including malleation air inlet pipe and
Plemum, plemum has air inlet and gas outlet, and air inlet is connected with malleation air inlet pipe, and gas outlet connects with case is planted；With let out
Press mechanism includes the pressure release wheel gripper shoe connected with power transmission shaft, the pressure release wheel being arranged in pressure release wheel gripper shoe is combined and connection is let out
The extension spring that pinch roller gripper shoe is combined with pressure release wheel.
Above-mentioned aspiration inhales kind of a drum-type width Seedling band Semen Tritici aestivi feed mechanism for seed, and power transmission shaft is by bearing, bearing block flange, dividing plate, close
Seal, end cover, bolt and inhale kind of a cylinder and link together and form sealing area.
Above-mentioned aspiration inhales kind of a drum-type width Seedling band Semen Tritici aestivi feed mechanism for seed, inhales kind of cylinder one end connection end cap, other end connecting shaft
The outer ring of bearing is installed, bearing inner race is arranged on power transmission shaft, and sealing ring is arranged on sealed end in bearing flange, bearing block flange
Fix on the seal groove of lid and by dividing plate.
Above-mentioned aspiration inhales kind of a drum-type width Seedling band Semen Tritici aestivi feed mechanism for seed, the setting sprocket wheel on power transmission shaft, and sprocket wheel is inhaling kind of a rolling
Cylinder side and, the external profile diameter of end cover is less than sprocket tooth root diameter of a circle.
Above-mentioned aspiration inhales kind of a drum-type width Seedling band Semen Tritici aestivi feed mechanism for seed, and between plemum and kind bottom portion mesh screen is provided with.
Above-mentioned aspiration inhales kind of a drum-type width Seedling band Semen Tritici aestivi feed mechanism for seed, and it also includes support and power transmission shaft coupling assembly, transmission
Axle coupling assembly includes two axle mounting seats and pressing plate, and axle mounting seat is located at power transmission shaft both sides, and axle mounting seat upper end connects pressing plate,
Axle mounting seat lower end connecting bracket, power transmission shaft is processed as plane with the both sides of axle mounting seat contact position.
Above-mentioned aspiration inhales kind of a drum-type width Seedling band Semen Tritici aestivi feed mechanism for seed, and power transmission shaft is connected one end external diameter with support slightly larger than transmission
The height of axle mounting seat.
Above-mentioned aspiration inhales kind of a drum-type width Seedling band Semen Tritici aestivi feed mechanism for seed, and the power transmission shaft installs one end of pressure release wheel and pressure release wheel
Gripper shoe contact position side is processed as plane.
Above-mentioned aspiration inhales kind of a drum-type width Seedling band Semen Tritici aestivi feed mechanism for seed, have in pressure release wheel gripper shoe an axle installing hole, one
Spring connecting hole and a pin shaft hole, axle installing hole is incomplete circle, identical with power transmission shaft outline, and the combination of pressure release wheel is logical
Cross bearing pin to be arranged in pressure release wheel gripper shoe through pin shaft hole.
Above-mentioned aspiration inhales kind of a drum-type width Seedling band Semen Tritici aestivi feed mechanism for seed, inhales the sucker that some distributions of embarking on journey are provided with kind of cylinder,
Pressure release wheel quantity in the combination of pressure release wheel is consistent with the type hole line number inhaled on kind of cylinder.
Beneficial effects of the present invention：
Seed is removed by kind of case using air negative pressure, and carries out simple grain seeding, can disposably be completed to disturb kind, inhale kind, clear planting
With the operation such as seeding, seedling growth can be avoided uneven, and effectively improve seeding quality, promote Semen Tritici aestivi preferably to grow,
Play the effect of increasing both production and income.
Description of the drawings
Below in conjunction with the accompanying drawings the invention will be further described：
Fig. 1 is the generalized section of the present invention；
Fig. 2 is the axonometric chart of the present invention；
Fig. 3 is the shafting profile of the present invention；
Fig. 4 is the transmission shaft structure schematic diagram of the present invention.
In figure：1st, case is planted, 2, plant position adjustable plate, 3, plant plate clearly, 4, extension spring, 5, inhale kind of a cylinder, 6, pressure release wheel gripper shoe,
7th, pressure release wheel combination, 8, power transmission shaft, 9, bearing block flange, 10, bolt, 11, screw, 12, plemum, 13, mesh screen, 14, just
It is pressed into trachea, 15, plant case mounting seat, 16, plant case bolt, 17, support, 18, axle mounting seat, 19, pressing plate, 20, follower bolt,
21st, sprocket wheel, 22, end cap, 23, bearing, 24, end cover, 25, sealing ring, 26, dividing plate.
Specific embodiment
To make the objects, technical solutions and advantages of the present invention become more apparent, develop simultaneously referring to the drawings embodiment, right
The present invention is further described.
A kind of aspiration inhales kind of a drum-type width Seedling band Semen Tritici aestivi feed mechanism for seed, including support, plants draw box mechanism, inhales kind of a cylinder mechanism, clear
Plate 3, malleation inflation mechanism and pressure relief mechanism are planted, draw box mechanism is planted and a suction kind cylinder mechanism is installed on support 17, plant draw box mechanism
Positioned at kind of a cylinder mechanism side is inhaled, plate 3 being planted clearly and pressure relief mechanism being arranged on suction kind cylinder mechanism, malleation inflation mechanism is located at plants
Draw box mechanism bottom.
In the present embodiment, planting draw box mechanism includes kind of a case 1, plants case 1 and is arranged in kind of case mounting seat 15 by kind of a case bolt 16,
Plant case mounting seat 15 to be fixed on support 17, plant in case 1 and is provided with kind of a position adjustable plate 2, can be adjusted by this kind of position adjustable plate 2
The thickness of the bottom kind layer of case 1 is planted, and then kind of a distance is filled in adjustment.
In the present embodiment, inhaling kind of cylinder mechanism includes inhaling kind of a cylinder 5, inhales the suction that some distributions of embarking on journey are provided with kind of cylinder 5
Hole, inhales kind of the axis direction of cylinder 5 and is provided with power transmission shaft 8, and power transmission shaft 8 passes through bearing 23, bearing block flange 9, dividing plate 26, sealing ring
25th, end cover 24, bolt 10 link together and form sealing area with kind of a cylinder 5 is inhaled, in order to drive a suction kind cylinder 5 to revolve
Turn, inhale kind of the side of cylinder 5 and be provided with sprocket wheel 21, and sprocket wheel 21 is located on power transmission shaft 8, in order that will not between driving-chain and dividing plate 26
Movement interference is produced, the external profile diameter of end cover 24 is less than the tooth root diameter of a circle of sprocket wheel 21.
In the present embodiment, inhale kind of one end of cylinder 5 and end cap 22 is connected by screw 11, the other end connects bearing by screw 11
Seat flange 9, installs the outer ring of bearing 23 in bearing block flange 9, the inner ring of bearing 23 is arranged on power transmission shaft 8, and sealing ring 25 is installed
Fix on the seal groove of end cover 24 and by dividing plate 26.
In the present embodiment, clear plate 3 of planting is arranged on the suction kind periphery of cylinder 5, and is connected with kind of case 1.
In the present embodiment, malleation inflation mechanism is located at kind of the bottom of case 1, including malleation air inlet pipe 14 and plemum 12, malleation
Room 12 has air inlet and gas outlet, and air inlet is connected with malleation air inlet pipe 14, and gas outlet connects with kind case 1, plemum 12 and
Plant and be provided with mesh screen 13 between the bottom of case 1, mesh screen 13 can prevent seed from falling into plemum 12, while enter can malleation air-flow
The bottom of case 1 is planted, seed is disturbed to fluidized state, make sucker draw seed more easy.
In the present embodiment, pressure relief mechanism includes the pressure release wheel gripper shoe 6 being connected with power transmission shaft 8, is arranged on the support of pressure release wheel
7 extension spring 4, the pressure release in pressure release wheel combination 7 are combined in pressure release wheel combination 7 and connection pressure release wheel gripper shoe 6 on plate 6 with pressure release wheel
Wheel quantity is consistent with the type hole line number inhaled on kind of cylinder 5.
In the present embodiment, there are an axle installing hole, a spring connecting hole and a pin shaft hole in pressure release wheel gripper shoe 6,
Axle installing hole is incomplete circle, identical with the outline of power transmission shaft 8, pressure release wheel combination 7 is fixed on power transmission shaft 8 and will not be sent out
Raw to relatively rotate, pressure release wheel combination 7 is arranged in pressure release wheel gripper shoe 6 by bearing pin through pin shaft hole, and spring connecting hole is used for
Extension spring 4 is installed.
In the present embodiment, power transmission shaft 8 is hollow-core construction, and power transmission shaft 8 is fixed on support 17 by power transmission shaft coupling assembly,
Power transmission shaft coupling assembly includes two axle mounting seats 18 and pressing plate 19, and axle mounting seat 18 is located at power transmission shaft both sides, axle mounting seat 18
Upper end connects pressing plate 19 by follower bolt 20, and the lower end connecting bracket 17 of axle mounting seat 18, power transmission shaft 8 is contacted with axle mounting seat 18
The both sides at place are processed as plane.
In the present embodiment, power transmission shaft 8 is used for height of the fixed one end external diameter slightly larger than power transmission shaft mounting seat 18, makes pressing plate
Power transmission shaft 8 can be compressed after 19 installation fastenings, be consistent power transmission shaft two ends.
In the present embodiment, power transmission shaft 8 installs one end of pressure release wheel and is processed as putting down with the contact position side of pressure release wheel gripper shoe 6
Face, prevents pressure release wheel gripper shoe 6 from rotating around power transmission shaft 8.
Above-mentioned specific embodiment is only the concrete case of the present invention, is not the restriction for making other forms to the present invention,
Any those skilled in the art are changed or are modified as equivalent variations possibly also with the technology contents of the disclosure above
Equivalent implementations.But on the premise of every principle without departing from the technology of the present invention, according to the technical spirit of the present invention to the above
Any simple modification, equivalent variations and remodeling that embodiment is made, should all fall into the scope of patent protection of the present invention.
Claims (10)
1. a kind of pneumatic drum type width Seedling is with Semen Tritici aestivi feed mechanism for seed, it is characterised in that include：
Draw box mechanism is planted, including kind of case and the kind position adjustable plate being arranged in kind of case；
Kind of a cylinder mechanism is inhaled, including is inhaled kind of cylinder and is arranged at the power transmission shaft for inhaling kind of cylinder axis；
It is clear to plant plate, it is arranged on suction kind and inhales kind of a roll circumference outside, and be connected with kind of a case；
Malleation inflation mechanism, positioned at kind of a bottom portion, including malleation air inlet pipe and plemum, plemum has air inlet and outlet
Mouthful, air inlet is connected with malleation air inlet pipe, and gas outlet connects with case is planted；With
Pressure relief mechanism include being combined with the pressure release wheel gripper shoe of power transmission shaft connection, the pressure release wheel that is arranged in pressure release wheel gripper shoe and
The extension spring that connection pressure release wheel gripper shoe is combined with pressure release wheel.
2. aspiration as claimed in claim 1 inhales kind of a drum-type width Seedling band Semen Tritici aestivi feed mechanism for seed, it is characterised in that：Power transmission shaft passes through axle
Hold, bearing block flange, dividing plate, sealing ring, end cover, bolt link together and form sealing area with kind of a cylinder is inhaled.
3. aspiration as claimed in claim 2 inhales kind of a drum-type width Seedling band Semen Tritici aestivi feed mechanism for seed, it is characterised in that：Inhale kind of a cylinder one end to connect
End cap is connect, other end connection bearing block flange installs the outer ring of bearing in bearing block flange, bearing inner race is arranged on power transmission shaft
On, sealing ring is arranged on the seal groove of end cover and by dividing plate and fixes.
4. aspiration as claimed in claim 2 inhales kind of a drum-type width Seedling band Semen Tritici aestivi feed mechanism for seed, it is characterised in that：Setting on power transmission shaft
Sprocket wheel, and sprocket wheel inhale kind of cylinder side and, the external profile diameter of end cover is less than sprocket tooth root diameter of a circle.
5. aspiration as claimed in claim 1 inhales kind of a drum-type width Seedling band Semen Tritici aestivi feed mechanism for seed, it is characterised in that：Plemum and kind bottom
Mesh screen is provided between portion.
6. aspiration as claimed in claim 1 inhales kind of a drum-type width Seedling band Semen Tritici aestivi feed mechanism for seed, it is characterised in that：Its also include support and
Power transmission shaft coupling assembly, power transmission shaft coupling assembly includes two axle mounting seats and pressing plate, and axle mounting seat is located at power transmission shaft both sides, axle
Mounting seat upper end connects pressing plate, and axle mounting seat lower end connecting bracket, power transmission shaft is processed as putting down with the both sides of axle mounting seat contact position
Face.
7. aspiration as claimed in claim 6 inhales kind of a drum-type width Seedling band Semen Tritici aestivi feed mechanism for seed, it is characterised in that：Power transmission shaft connects with support
Connect height of one end external diameter slightly larger than power transmission shaft mounting seat.
8. aspiration as claimed in claim 1 inhales kind of a drum-type width Seedling band Semen Tritici aestivi feed mechanism for seed, it is characterised in that：The power transmission shaft is installed
One end of pressure release wheel is processed as plane with pressure release wheel gripper shoe contact position side.
9. the aspiration as described in any one of claim 1 to 8 inhales kind of a drum-type width Seedling band Semen Tritici aestivi feed mechanism for seed, it is characterised in that：Pressure release
There are an axle installing hole, a spring connecting hole and a pin shaft hole in wheel gripper shoe, axle installing hole is incomplete circle, with
Power transmission shaft outline is identical, and the combination of pressure release wheel is arranged in pressure release wheel gripper shoe by bearing pin through pin shaft hole.
10. the aspiration as described in any one of claim 1 to 8 inhales kind of a drum-type width Seedling band Semen Tritici aestivi feed mechanism for seed, it is characterised in that：Inhale and plant
The sucker of some distributions of embarking on journey is provided with cylinder, the pressure release wheel quantity in the combination of pressure release wheel plants the type hole line number one on cylinder with suction
Cause.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710085757.9A CN106612788A (en) | 2017-02-17 | 2017-02-17 | Air-suction seed suction roller type wide-seedling-zone wheat seed sowing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710085757.9A CN106612788A (en) | 2017-02-17 | 2017-02-17 | Air-suction seed suction roller type wide-seedling-zone wheat seed sowing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106612788A true CN106612788A (en) | 2017-05-10 |
Family
ID=58846321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710085757.9A Pending CN106612788A (en) | 2017-02-17 | 2017-02-17 | Air-suction seed suction roller type wide-seedling-zone wheat seed sowing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106612788A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107736112A (en) * | 2017-12-01 | 2018-02-27 | 南京农业大学 | A kind of mechanical strength combined type vegetables precise seeder |
| CN110679247A (en) * | 2019-11-25 | 2020-01-14 | 吉林省农业机械研究院 | Elastic seed discharging device of pneumatic seed sowing device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2067396A1 (en) * | 2007-11-07 | 2009-06-10 | Amazonen-Werke H. Dreyer GmbH & Co. KG | Pneumatic single-grain seeder |
| CN103004338A (en) * | 2012-12-13 | 2013-04-03 | 中国农业大学 | Air power collecting and discharging type precision seed sowing device |
| CN104472076A (en) * | 2014-12-18 | 2015-04-01 | 山东理工大学 | Dual-purpose type seeding device with drilled seeding and hole seeding of wheat and rice |
| CN105144931A (en) * | 2015-09-10 | 2015-12-16 | 昆明理工大学 | Air suction type precision pseudo-ginseng seed sowing device |
| CN206472477U (en) * | 2017-02-17 | 2017-09-08 | 山东省农业机械科学研究院 | Aspiration inhales the wide seedling band wheat feed mechanism for seed of kind of drum-type |
-
2017
- 2017-02-17 CN CN201710085757.9A patent/CN106612788A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2067396A1 (en) * | 2007-11-07 | 2009-06-10 | Amazonen-Werke H. Dreyer GmbH & Co. KG | Pneumatic single-grain seeder |
| CN103004338A (en) * | 2012-12-13 | 2013-04-03 | 中国农业大学 | Air power collecting and discharging type precision seed sowing device |
| CN104472076A (en) * | 2014-12-18 | 2015-04-01 | 山东理工大学 | Dual-purpose type seeding device with drilled seeding and hole seeding of wheat and rice |
| CN105144931A (en) * | 2015-09-10 | 2015-12-16 | 昆明理工大学 | Air suction type precision pseudo-ginseng seed sowing device |
| CN206472477U (en) * | 2017-02-17 | 2017-09-08 | 山东省农业机械科学研究院 | Aspiration inhales the wide seedling band wheat feed mechanism for seed of kind of drum-type |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107736112A (en) * | 2017-12-01 | 2018-02-27 | 南京农业大学 | A kind of mechanical strength combined type vegetables precise seeder |
| CN107736112B (en) * | 2017-12-01 | 2023-12-08 | 南京农业大学 | Mechanical and pneumatic combined vegetable precision seed sowing device |
| CN110679247A (en) * | 2019-11-25 | 2020-01-14 | 吉林省农业机械研究院 | Elastic seed discharging device of pneumatic seed sowing device |
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Application publication date: 20170510 |