CN107046882A - A kind of aspirated-air type rice seedling planter - Google Patents
A kind of aspirated-air type rice seedling planter Download PDFInfo
- Publication number
- CN107046882A CN107046882A CN201710350852.7A CN201710350852A CN107046882A CN 107046882 A CN107046882 A CN 107046882A CN 201710350852 A CN201710350852 A CN 201710350852A CN 107046882 A CN107046882 A CN 107046882A
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- China
- Prior art keywords
- roller
- suction
- inhaling
- hole
- end cap
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/18—Machines for depositing quantities of seed at intervals
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Sowing (AREA)
Abstract
The invention provides a kind of aspirated-air type rice seedling planter, including for kind of a case, suction kind roller and hole cleaning device provided with rotating shaft.Wherein inhaling kind of roller includes inner roller, the thin-walled outer roller being wrapped in outside inner roller and the end cap with inhaling one end close fit for planting roller, and inner roller is provided with some air intake passages corresponding with suction hole in outer roller；End cap plants the rib that the confined space that formed between roller end face and end cap is separated into two isolated areas including the suction hole connected with vavuum pump, the passage being in communication with the outside and for that will inhale, wherein air intake passage is connected with confined space, suction hole and passage are fallen within the two regions respectively just, so as to form negative pressuren zone and zone of positive pressure, inhaling kind of a roller can relatively rotate with end cap；The lower section for inhaling kind of roller is provided with scraper plate and compression roller.The present invention is simple in construction, each suction hole can be dredged by effective cleaning before inhaling kind and do not blocked, it is to avoid broadcast leakage situation, considerably improves sowing efficiency.
Description
Technical field
Has field the present invention relates to rice raise rice seedlings sower.
Background technology
Aspiration type sowing device is a kind of accurate seeder of generally acknowledged amount of broadcasting, and widely should in crop precision drilling
With.But in rice growing, due in order to improve Germination Percentage of Rice and emergence rate, being needed before seed sowing by presoaking and germinating
Process, the seed generally sowed carries short radical bud.Using in pneumatic seeder seeding process, due between seed and planting
Friction and collision between son and seeding apparatus, radical bud are easy to fracture.And the diameter of these radical buds often with air-suction seeder
Suction hole diameter be close, therefore the radical bud after fractureing usually blocks a suction kind mouth, so that cavitation occurs in sowing, sows
Deterioration in accuracy.If this blocking is just difficult dredging without using Compulsory Removal, and then has influence on the whole seeding process in later stage.Especially
It is that in rice nursing seedlings seeding, because the amount of broadcasting of needs is larger, closeer, thus this clogging is even more serious, so as to limit
Application of the aspiration type sowing device in seedling planting.
At present, solution to the problems described above is mainly equipped with hairbrush outside air-suction seeder, while seed drops
Suction hole is cleared up, but only may be still completely cured or debris can be embedded in suction hole, cleaning effect by brushing for hairbrush
It is undesirable；Or the through hole mechanism of pin type is set in sowing mechanism, but this structure is big for suction hole density, drum type brake
Rice seedling planter is obviously not suitable with.
The content of the invention
It is an object of the invention to overcome shortcoming present in prior art can also while inhaling and planting seeding there is provided one kind
The impurity in suction hole is sunk into automatic cleaning, solves blockage problem, it is ensured that the aspirated-air type paddy rice of device high efficiency operating all the time educates
Seedling seeder.
To achieve these goals, the technical solution adopted by the present invention is as follows：
A kind of aspirated-air type rice seedling planter, including for kind of a case, suction kind roller and hole cleaning device provided with rotating shaft, it is described
Kind of roller is inhaled to be arranged on outside the seed discharging opening for kind of case, it is characterised in that：
Kind of the roller of inhaling includes inner roller, the thin-walled outer roller being wrapped in outside the inner roller and the suction kind roller
One end fixation end cap, the suction kind roller can be relatively rotated with the end cap, and fixed end cap and inhaling is sealed between kind of roller,
The inner roller is provided with some on the suction kind evenly distributed axial through hole of roller shaft, the wall of each axially extending bore
Some radial direction through hole are provided with along axial length direction also compartment of terrain；The outer roller be provided with some suction holes, the suction hole with it is described
Radial direction through hole is corresponded, also, suction hole is less than radial direction through hole；
The end cap is including the suction hole connected with vavuum pump, the passage being in communication with the outside and for described inhale to be planted
The confined space formed between roller end face and the end cap is separated into the segmenting structure of two isolated areas, wherein the axial direction
Through hole is connected with the confined space, and the suction hole and the passage are fallen within the two isolated areas respectively, so that shape
Into negative pressuren zone and zone of positive pressure；
The hole cleaning device is arranged on after the seeding inhaled on the outside of kind of roller with inhaling the transition region before planting.
Further, the hole cleaning device includes scraper plate and compression roller, and the scraper plate and compression roller rotate along kind of roller is inhaled
Direction is successively set on after the seeding inhaled on the outside of kind of roller with inhaling the transition region before planting.
Further, it is provided between the end cap and the vavuum pump in closed separate cup, the separate cup and leads to institute
The flue port of suction hole is stated compared with leading to the flue port of the vavuum pump closer to the bottom surface of the separate cup.
Further, the scraper plate is the hard thing of flat strip shaped that length is adapted to the axial length for inhaling kind of roller；The scraper plate
The position of negative pressuren zone and the long side of the scraper plate and institute are had just enter into after the suction hole seeding inhaled below kind of roller
State the surface contact for inhaling kind of roller.
Further, the compression roller starts to inhale the negative pressuren zone before planting located at the suction hole inhaled below kind of roller
Position；The surface of the compression roller is elastomeric soft materials and forms extruding relation with the surface for inhaling kind of roller.
Further, the scraper plate and compression roller are each attached on the confession kind case, and can pass through the length on fixed position
Hole adjusted with the distance for inhaling kind of roller.
Further, the end cap is provided with annular groove, the ring surface that the suction kind roller is contacted with the end cap
Be additionally provided with the annular boss mutually chimeric with the annular groove so that the annular groove and the end face for inhaling kind of roller it
Between form the confined space.
Further, the other end for inhaling kind of roller is provided with inhales the capping that kind of roller is connected as a single entity with described；Described turn
Axle sequentially passes through capping, inhales kind of roller and end cap and fixed as one with the capping and kind of the roller of inhaling.
Further, the side plate away from the suction kind roller side on the seed discharging opening inhales kind of a roller bending to described
And a segment distance is extend horizontally away, the bottom side of the suction kind roller is touched with the joining distal ends of the side plate.
Beneficial effects of the present invention：This product is simple and compact for structure, and suction hole is easy to dredging；Gone back while inhaling and planting seeding
It can clear up the impurity sunk into suction hole automatically, solve blockage problem, the situation for farthest reduce broadcast leakage, broadcasting less, no
Only sow running that is uniform and enabling seeder continuously and stably to maintain peak efficiency.
Brief description of the drawings
Fig. 1 is side view of the invention.
Fig. 2 is operating diagram of the invention.
Fig. 3 is suction kind roller sectional view of the invention.
Fig. 4 plants the partial enlarged drawing of roller sectional view for the suction of the present invention.
Fig. 5 is inner roller schematic diagram of the invention.
Fig. 6 is outer roller schematic diagram of the invention.
Fig. 7 is end cap schematic diagram of the invention.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
Referring to the drawings.The present invention, which is provided with, to be included for kind of a case 2, suction kind roller 1 and hole cleaning device provided with rotating shaft 3.Inhale kind of a rolling
Cylinder 1 is arranged on for the seed discharge outlet in kind of case 2.Inhaling kind of roller 1 includes inner roller 11 and the outer rolling being enclosed on outside inner roller
Cylinder 12.Wherein inner roller 11 surrounds the evenly distributed axial through hole 111 of rotating shaft 3 provided with some.Section of these axially extending bores 111
The circumference in same section of the face circle center line connecting with inhaling kind of roller 1 is the concentric circles using the center of circle in the section of rotating shaft 3 as the center of circle.Each axle
Some radial direction through hole 112 are also provided with evenly and at intervals along axial length direction on to through hole 111.The length of each radial direction through hole 112 is equal
The beeline of the lateral surface of inner roller 11 is arrived for corresponding axially extending bore 111.Outer roller 12 is provided with some suction holes 121
Thin walled hard cylindrical body.Suction hole 121 is corresponded with radial direction through hole 112, and the diameter of suction hole 121 is less than radial direction through hole
112 diameter.That is, suction hole 121, radial direction through hole 112 and the three of axially extending bore 111 are interconnected.The internal diameter of outer roller 12 with
The external diameter of inner roller 11 is identical, outer roller 12 is closely wrapped in inner roller 11, prevents the phenomenon that leaks air between the two.
In addition, this outer thin interior thick bilayer combination structure so that it is only thin suction hole 121 to inhale position blocked when planting sowing,
It is easy to dredging, while the inner roller 11 of heavy wall then plays a supportive role to outer roller 12, it is therefore prevented that outer roller 12 influences because of deformation
The shape of suction hole 121 causes to inhale kind of a failure.Specifically, the number of suction hole 121 can change with the size of sowing demand
Become, and radial direction through hole 112 and axially extending bore 111 should with suction hole 121 number respective change.
A capping 14 and an end cap 13 are further respectively had at the two ends for inhaling kind of roller 1, three is set on rotating shaft 3
On.Capping 14 is diameter with inhaling kind of the diameter identical plectane of roller 1.Wherein, inhale kind of roller 1 and cover 14 and affixed with rotating shaft 3 be
One, is rotated with the rotation of rotating shaft 3, and end cap 13 then remains inactive state.
Provided with an annular groove 133 in end cap 13 so that when end cap 13 coordinates with inhaling the end face inlay card of kind of roller 1, end
Lid 13 forms an annular space 10 that is closed and being connected with each axially extending bore 111 between the end face with inhaling kind of roller 1.
A suction hole 131 connected with vavuum pump 5, the passage 132 being in communication with the outside are additionally provided with the annular groove 133 and is used
In the rib 134 that annular space 10 is separated into two regions independent of one another.Wherein, suction hole 131 and passage 132 divide just
Do not fall within the two regions, so that by 10 points of annular space to form negative pressuren zone and zone of positive pressure.Particularly, inhale kind of roller 1 with
The annular boss 113 mutually chimeric with annular groove 133 is additionally provided with the ring surface that end cap 13 is contacted so that is inhaled kind of roller 1 and is being turned
Side seals when dynamic；Inhale kind of roller 1 and do encapsulation process with rib 134 and convex center, prevent air between positive and negative air-pressure
Flowing.Specifically, the position adjustment of suction kind or seeding of the size of negative pressuren zone and zone of positive pressure according to needed for suction hole 121.
Closed separate cup 4 is additionally provided between end cap 13 and vavuum pump 5.Wherein, suction hole 131 is led in separate cup 4
Flue port is compared with leading to the flue port of vavuum pump 5 closer to the bottom surface of separate cup 4.Therefore, the impurity being inhaled into can be stagnant
Stay in separate cup 4 and be separated without entering in vavuum pump 5.
During use, inhale kind of a roller 1 and constantly rotated relative to end cap 13, therefore axially extending bore 111 can constantly pass through negative pressure
Area-zone of positive pressure-negative pressuren zone, so that the air pressure in suction hole 121 is also continually changing therewith.When suction hole 121 goes to seed discharging
It is now negative pressure in suction hole 121 during mouth, band root seed is drawn onto in each suction hole 121 simultaneously concomitant rotation exactly；One
The corresponding axially extending bore 111 of denier goes to zone of positive pressure from negative pressuren zone, seed be just no longer adsorbed but under gravity from
So drop and realize seeding process.Therefore, under the continuous alternating of negative-positive air pressure, this product, which can constantly complete to inhale, plants and arranges
The process of kind.
However, the blank state of a period of time can be kept with the suction hole 121 inhaled in the stage before planting after seeding.Should
The suction hole 121 of state is in the bottom transition area for inhaling kind of roller 1.Another innovation of this product, is in the transition
Area is provided for the hole cleaning device for dredging suction hole 121, the suction kind for a lower whorl is prepared.
The hole cleaning device includes being successively set on the scraper plate 6 and compression roller 7 for inhaling the lower section of kind of roller 1 along seed flow direction.
Wherein, the position of negative pressuren zone is had just enter into after the seeding of suction hole 121 of the correspondence of scraper plate 6, and compression roller 7 then corresponds to scraper plate 6 and seed
Negative pressure zone position between discharging opening 9.Scraper plate 6 be length with inhale kind of roller 1 the hard thing of axial length identical flat strip shaped and long side with
The surface for inhaling kind of roller 1 is in contact.When inhaling kind of the rotation of roller 1 by scraper plate 6, scraper plate 6 relies on scraping effect between the two,
The part for making the debris being blocked in suction hole 121 be revealed in surface is cut off.Compression roller 7 is then that root surface parcel elasticity is soft
The hard circular shaft of material and the intimate surface contact with inhaling kind of roller 1.When suction hole 121, which is squeezed pressure roller 7, to be extruded, compression roller 7 is sent out
Raw deformation is inhaled under negative pressure state separation so as to which the debris remained in suction hole 121 is headed into radial direction through hole 112
In cup 4.Therefore, each time inhale kind when, suction hole 121 ensure it is unimpeded do not block, so as to break off the blocking due to suction hole
And occur broadcast leakage, broadcast less, sow non-uniform phenomenon, carrying out seedling kind with highest efficiency sows.Particularly, the He of scraper plate 6
Compression roller 7 is each attached to for planting on case 2, and can be carried out by the elongated hole 8 on fixed position with inhaling the distance between kind of roller 1 tune
Section.
On seed discharging opening 9 away from inhale the side plate of kind of roller 1 side to inhale kind of a roller 1 bend and extend horizontally away one section away from
From；The joining distal ends of the bottom side and the side plate of inhaling kind of roller 1 are touched.Therefore, the seed failed on adsorbed can drop again
Return in seed discharging opening 9 and wait the suction kind of next round.
It should be pointed out that embodiments of the invention are described above.However, art technology it is to be understood by the skilled artisans that
The present invention is not limited to the above embodiments, merely illustrating the principles of the invention described in above-described embodiment, is not departing from this
The present invention also has a variety of changes and improvements on the premise of invention scope, and these changes and improvements both fall within this claimed hair
In bright scope.
Claims (9)
1. a kind of aspirated-air type rice seedling planter, including for kind of a case, suction kind roller and hole cleaning device provided with rotating shaft, the suction
Roller is planted to be arranged on outside the seed discharging opening for kind of case, it is characterised in that：
Kind of the roller of inhaling includes the one of inner roller, the thin-walled outer roller being wrapped in outside the inner roller and the suction kind roller
The fixation end cap at end, the suction kind roller can be relatively rotated with the end cap, be sealed between fixed end cap and suction kind roller, described
Inner roller is planted on the evenly distributed axial through hole of roller shaft, the wall of each axially extending bore along axle provided with some around suction
Length direction also compartment of terrain is provided with some radial direction through hole；The outer roller is provided with some suction holes, the suction hole and the radial direction
Through hole is corresponded, also, suction hole is less than radial direction through hole；
The end cap is including the suction hole connected with vavuum pump, the passage being in communication with the outside and for inhaling kind of a roller by described
The confined space formed between end face and the end cap is separated into the segmenting structure of two isolated areas, wherein the axially extending bore
Connected with the confined space, the suction hole and the passage are fallen within the two isolated areas respectively, so as to form negative
Nip and zone of positive pressure；
The hole cleaning device is arranged on after the seeding inhaled on the outside of kind of roller with inhaling the transition region before planting.
2. a kind of aspirated-air type rice seedling planter as claimed in claim 1, it is characterised in that the hole cleaning device includes scraping
Plate and compression roller, the scraper plate and compression roller are successively set on the seeding inhaled on the outside of kind of roller along kind of a roller direction of rotation is inhaled
Afterwards with inhaling the transition region before planting.
3. a kind of aspirated-air type rice seedling planter as claimed in claim 1, it is characterised in that the end cap and the vacuum
Provided with closed separate cup between pump, the flue port that the suction hole is led in the separate cup relatively leads to the vavuum pump
Flue port closer to the bottom surface of the separate cup.
4. a kind of aspirated-air type rice seedling planter as claimed in claim 2, it is characterised in that the scraper plate is length and institute
State the hard thing of flat strip shaped for the axial length adaptation for inhaling kind of roller；The scraper plate is located at the suction hole seeding inhaled below kind of roller
The position of negative pressuren zone is had just enter into afterwards and the long side of the scraper plate is contacted with the surface for inhaling kind of roller.
5. a kind of aspirated-air type rice seedling planter as claimed in claim 2, it is characterised in that the compression roller is located at described
The suction hole below kind of roller is inhaled to start to inhale the negative pressure zone position before planting；The surface of the compression roller be elastomeric soft materials and
Extruding relation is formed with the surface for inhaling kind of roller.
6. a kind of aspirated-air type rice seedling planter as claimed in claim 2, it is characterised in that the scraper plate and compression roller are equal
It is fixed on described on kind of case, and the elongated hole that can pass through on fixed position adjusted with the distance for inhaling kind of roller.
7. a kind of aspirated-air type rice seedling planter as claimed in claim 1, it is characterised in that the end cap is provided with annular
The convex annular mutually chimeric with the annular groove is additionally provided with groove, the ring surface that the suction kind roller is contacted with the end cap
Platform, so that forming the confined space between the end face of the annular groove and the suction kind roller.
8. a kind of aspirated-air type rice seedling planter as claimed in claim 1, it is characterised in that the suction kind roller it is another
End is provided with inhales the capping that kind of roller is connected as a single entity with described；The rotating shaft sequentially pass through capping, inhale kind of roller and end cap and with
The capping and kind of the roller of inhaling fix as one.
9. a kind of aspirated-air type rice seedling planter as claimed in claim 1, it is characterised in that remote on the seed discharging opening
Side plate from the suction kind roller side bends to the suction kind roller and extend horizontally away a segment distance, the suction kind roller
The joining distal ends of bottom side and the side plate are touched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710350852.7A CN107046882A (en) | 2017-05-18 | 2017-05-18 | A kind of aspirated-air type rice seedling planter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710350852.7A CN107046882A (en) | 2017-05-18 | 2017-05-18 | A kind of aspirated-air type rice seedling planter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107046882A true CN107046882A (en) | 2017-08-18 |
Family
ID=59610638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710350852.7A Pending CN107046882A (en) | 2017-05-18 | 2017-05-18 | A kind of aspirated-air type rice seedling planter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107046882A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201153382Y (en) * | 2008-03-06 | 2008-11-26 | 陈恒 | Accuracy seed-picking hole seeding device of aspiration type |
| US20090107369A1 (en) * | 2007-10-24 | 2009-04-30 | Wintersteiger Ag | Sowing device |
| CN201238453Y (en) * | 2008-07-01 | 2009-05-20 | 华南农业大学 | Pneumatic type precision seeder |
| CN102106211A (en) * | 2011-01-10 | 2011-06-29 | 淮海工学院 | Precise seeds sowing device for growing seedlings of aperture disk |
| CN202488975U (en) * | 2012-01-05 | 2012-10-17 | 台州赛得林机械有限公司 | Positive and negative pressure sowing machine roller |
| CN103004338A (en) * | 2012-12-13 | 2013-04-03 | 中国农业大学 | Air power collecting and discharging type precision seed sowing device |
| CN103959963A (en) * | 2014-05-23 | 2014-08-06 | 新疆农垦科学院 | Drum type facility seedling precision seeding apparatus with staggered seed-scraping function |
| CN204887945U (en) * | 2015-07-20 | 2015-12-23 | 张鸽 | Accurate seed metering ware of pseudo -ginseng |
| CN105659999A (en) * | 2014-11-19 | 2016-06-15 | 现代农装科技股份有限公司 | Air-suction vegetable seedling-raising and precision seeding roller |
| CN105993319A (en) * | 2016-06-14 | 2016-10-12 | 华南农业大学 | Pneumatic double-layer roller type seed discharging device |
| CN206790941U (en) * | 2017-05-18 | 2017-12-26 | 中国水稻研究所 | A kind of aspirated-air type rice seedling planter |
-
2017
- 2017-05-18 CN CN201710350852.7A patent/CN107046882A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090107369A1 (en) * | 2007-10-24 | 2009-04-30 | Wintersteiger Ag | Sowing device |
| CN201153382Y (en) * | 2008-03-06 | 2008-11-26 | 陈恒 | Accuracy seed-picking hole seeding device of aspiration type |
| CN201238453Y (en) * | 2008-07-01 | 2009-05-20 | 华南农业大学 | Pneumatic type precision seeder |
| CN102106211A (en) * | 2011-01-10 | 2011-06-29 | 淮海工学院 | Precise seeds sowing device for growing seedlings of aperture disk |
| CN202488975U (en) * | 2012-01-05 | 2012-10-17 | 台州赛得林机械有限公司 | Positive and negative pressure sowing machine roller |
| CN103004338A (en) * | 2012-12-13 | 2013-04-03 | 中国农业大学 | Air power collecting and discharging type precision seed sowing device |
| CN103959963A (en) * | 2014-05-23 | 2014-08-06 | 新疆农垦科学院 | Drum type facility seedling precision seeding apparatus with staggered seed-scraping function |
| CN105659999A (en) * | 2014-11-19 | 2016-06-15 | 现代农装科技股份有限公司 | Air-suction vegetable seedling-raising and precision seeding roller |
| CN204887945U (en) * | 2015-07-20 | 2015-12-23 | 张鸽 | Accurate seed metering ware of pseudo -ginseng |
| CN105993319A (en) * | 2016-06-14 | 2016-10-12 | 华南农业大学 | Pneumatic double-layer roller type seed discharging device |
| CN206790941U (en) * | 2017-05-18 | 2017-12-26 | 中国水稻研究所 | A kind of aspirated-air type rice seedling planter |
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Application publication date: 20170818 |