CN202818939U - Circumferential hole air-aspiration type seed-metering device - Google Patents
Circumferential hole air-aspiration type seed-metering device Download PDFInfo
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- CN202818939U CN202818939U CN 201220373352 CN201220373352U CN202818939U CN 202818939 U CN202818939 U CN 202818939U CN 201220373352 CN201220373352 CN 201220373352 CN 201220373352 U CN201220373352 U CN 201220373352U CN 202818939 U CN202818939 U CN 202818939U
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- seed
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- wheel
- negative pressure
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Abstract
The utility model relates to a circumferential hole air-aspiration type seed-metering device and relates to the technical field of the seeder seed-metering device. The circumferential hole air-aspiration type seed-metering device comprises a seed-metering wheel which is arranged on a dabber. A row of feed outlets are arranged at the outer circumference of the seed-metering wheel. The row of the feed outlets are communicated with an inner cavity of the seed-metering wheel through air passages. The inner cavity of the seed-metering wheel is formed into a negative pressure chamber, and the negative pressure chamber is communicated with a negative pressure pipeline. A fixed lockable air cut valve of the feed outlets to seed is arranged in the inner cavity of the seed-metering wheel. The outer annulus of the seed-metering wheel is matched and communicated with a seed tank. The circumferential hole air-aspiration type seed-metering device has the advantages of being simple in structure and good in reliability. The seed-metering device can not only ensure that seed suction is reliable and enough, seeding is fast and reliable, seeds can not be damaged and jammed, but also can avoid the factor of miss-seeding as a result of air hole blocking. Tightness of an air chamber is good, frictional resistance is less, and energy consumption of the seed-metering device is low. Colonization and singling of crops is ensured, thinning is not needed in the later period, labor intensity is reduced, and keeping a full stand of seedlings, strong seeding and effect of increasing production and gain are achieved.
Description
Technical field
The utility model relates to the technical field of seeding devices of sower.
Background technology
Seeding unit is the critical component on the sower, and its service behaviour directly affects the operation quality of whole sower.At present domestic seeding unit development to frangible crops of granule such as millets also is in reduced levels, because easily causing, the problems such as the structure of seeding unit, material fill kind not exclusively in the seeding process, seeding is not thorough, seeding unit obstruction or seed can not be satisfied the specification requirement of fine grain crop precision drilling preferably by problems such as mangled injuries; In addition, domestic air-suction seed metering device adopts the aspiration disk structure more, and sealing effectiveness is bad, and easily stops up, and is difficult to realize the sowing of small-sized seed.
The utility model content
The technical problem that the utility model solves is to reduce to hinder to plant and blockage problem, realize a kind of air-suction seeding unit of the pressure of evenly sowing, minimizing later stage thinning, its simple in structure, good reliability, it is kind fully reliable that this seeding unit both can guarantee to inhale, and seeding is fast and reliable, injuring-free seed, stifled kind, also avoided simultaneously causing broadcast leakage owing to pore stops up, air chamber sealing is good, and frictional resistance is less, and the seeding unit energy consumption is low; Guaranteed crop field planting, decide strain, the later stage does not need thinning, reduces labour intensity, has realized the strong sprout of keeping a full stand of seedings, the effect of volume increase gain;
The utility model is to solve the problems of the technologies described above the main technical schemes that adopts to be: a kind of circumferential type hole air-suction seeding unit, it is characterized in that comprising the seed wheel that is contained on the mandrel (can be between mandrel and seed wheel and rotate or fixed the connection), the excircle of seed wheel is provided with several rows of kind of hole, this feed outlet is by the inner chamber UNICOM of air flue and seed wheel, the inner chamber of seed wheel forms negative pressure chamber, and this negative pressure chamber is communicated with negative-pressure pipeline; In the inner chamber of seed wheel and be provided with the fixed ACV Air Cut Valve that seals the feed outlet of wanting seeding; The excircle of seed wheel cooperates with the kind case and is communicated with.
Described mandrel is that hollow core shaft is better, and negative pressure chamber is communicated with negative-pressure pipeline by this hollow core shaft, and seed wheel and this hollow core shaft are rotatably assorted, and ACV Air Cut Valve is contained on the fixing hollow core shaft, and seed wheel and capping consist of negative pressure chamber.
Described negative pressure chamber also can be by fixing the end face air chamber and the structures such as negative-pressure pipeline is communicated with that is rotatably assorted with seeding unit; The fixed ACV Air Cut Valve that seals the feed outlet of wanting seeding that is provided with in the inner chamber of seed wheel can fix with the end face air chamber, or fixes (mandrel and seed wheel are rotationally connected) with (solid) mandrel; But structure is complicated.
Described air flue is that cannelure is better, and with the annular outer wall handing-over of seed wheel inner chamber, ACV Air Cut Valve is provided with the flange slide block that slides and seed can be discharged in this cannelure.
Described air flue also can be poroid, and ACV Air Cut Valve is provided with and it can be covered the structures such as flange slide block that sealing is died, and structure is good not as good as cannelure.
Be provided with flange sliding block spring formula hold-down mechanism, so that its dying property of sealing is more reliable.
Feed outlet on the excircle of described seed wheel is that bellmouth is better.Also can be according to requiring design.
Described seed wheel is connected better with the land wheel machine driving.
The beneficial effects of the utility model are: compared with prior art, can effectively reduce to hinder and plant and solve blockage problem, its simple in structure, good reliability, it is kind fully reliable that this seeding unit both can guarantee to inhale, and seeding is fast and reliable, injuring-free seed, stifled kind, also avoided simultaneously causing broadcast leakage owing to pore stops up, air chamber sealing is good, and frictional resistance is less, and the seeding unit energy consumption is low; Guaranteed crop field planting, decide strain, the later stage does not need thinning, reduces labour intensity, has realized the strong sprout of keeping a full stand of seedings, the effect of volume increase gain.
Be described further below in conjunction with embodiment and accompanying drawing, but not as to restriction of the present utility model.
Description of drawings
Fig. 1 is the assembly structure decomposing schematic representation of an embodiment of the utility model.
Fig. 2 is the structural representation of seed wheel among Fig. 1.
Fig. 3 is the perspective view of piece number 3 ACV Air Cut Valves among Fig. 1.
Among the figure: 1-mandrel, 2-seed wheel, 3-ACV Air Cut Valve, 31-flange slide block, 4-regulating spring, 5-capping, 6-trip bolt, 7-ACV Air Cut Valve support, 8-kind case.
Embodiment
See also Fig. 1, Fig. 2, Fig. 3, this circumferential type hole air-suction seeding unit, comprise the seed wheel 2 that is contained on the mandrel 1, the excircle of seed wheel 2 is provided with several rows of kind of hole, this feed outlet is by the inner chamber UNICOM of air flue and seed wheel 2, the inner chamber of seed wheel 2 forms negative pressure chamber, and this negative pressure chamber is communicated with negative-pressure pipeline; Be provided with the fixed ACV Air Cut Valve 3 that seals the feed outlet of wanting seeding in the inner chamber of seed wheel 2, the excircle of seed wheel 2 cooperates with kind case 8 and is communicated with.Described mandrel 1 is hollow core shaft, and negative pressure chamber is communicated with negative-pressure pipeline by this hollow core shaft, and seed wheel 2 is rotatably assorted with this hollow core shaft, and ACV Air Cut Valve 3 is contained on the fixing hollow core shaft, and seed wheel 2 and capping 5 consist of negative pressure chamber.Described air flue is cannelure, and with the annular outer wall handing-over of seed wheel 2 inner chambers, ACV Air Cut Valve 3 is provided with the flange slide block that slides and seed can be discharged in this cannelure.Described flange slide block is compressed by the spring hold-down mechanism.Feed outlet on the excircle of described seed wheel 2 is bellmouth.Described seed wheel 2 is connected with the land wheel machine driving.
During seeding, hollow core shaft maintains static, and as pump-line; Evenly perforate on contour of seed wheel 2 outer ring surfaces, the hole is tapered, and opens a dark groove on the same contour of inner ring surface; Seed wheel 2 is installed on the hollow core shaft 1 by bearing, and mounting sealing device, and it rotates under the driving of seeder ground wheel; Seed wheel turns round with land wheel.Plant case and maintain static, closely cooperate with seed sowing shell 2, make seed touch the suction kind type hole of seed sowing shell 2; The ACV Air Cut Valve 3 external flange slide blocks 31 dark grooves of inner ring surface proper and seed wheel 2 match, and are fixed on the hollow core shaft by flange slider bracket 7 by regulating spring 4; Last seed wheel 2 is by capping 5 sealings; Kind grain in kind of the case is adsorbed under suction function in the type hole, runs to ACV Air Cut Valve 3 places with the type hole, squeezes under the acting in conjunction that pushes away in deadweight and ACV Air Cut Valve, pushs out the grain in induction type hole is crowded, avoids the type hole plug.Through on probation, effect is fine.
Claims (6)
1. circumferential type hole air-suction seeding unit, it is characterized in that comprising the seed wheel (2) that is contained on the mandrel (1), the excircle of seed wheel (2) is provided with several rows of kind of hole, this feed outlet is by the inner chamber UNICOM of air flue and seed wheel (2), the inner chamber of seed wheel (2) forms negative pressure chamber, and this negative pressure chamber is communicated with negative-pressure pipeline; Be provided with the fixed ACV Air Cut Valve (3) that seals the feed outlet of wanting seeding in the inner chamber of seed wheel (2), the excircle of seed wheel (2) cooperates with kind case (8) and is communicated with.
2. circumferential type according to claim 1 hole air-suction seeding unit, it is characterized in that described mandrel (1) is hollow core shaft, negative pressure chamber is communicated with negative-pressure pipeline by this hollow core shaft, seed wheel (2) is rotatably assorted with this hollow core shaft, ACV Air Cut Valve (3) is contained on the fixing hollow core shaft, and seed wheel (2) and capping (5) consist of negative pressure chamber.
3. circumferential type according to claim 1 hole air-suction seeding unit, it is characterized in that described air flue is cannelure, with the annular outer wall handing-over of seed wheel (2) inner chamber, ACV Air Cut Valve (3) is provided with the flange slide block that slides and seed can be discharged in this cannelure.
4. circumferential type according to claim 3 hole air-suction seeding unit is characterized in that being provided with flange sliding block spring formula hold-down mechanism.
5. circumferential type according to claim 1 hole air-suction seeding unit is characterized in that the feed outlet on the excircle of described seed wheel (2) is bellmouth.
6. circumferential type according to claim 1 hole air-suction seeding unit is characterized in that described seed wheel (2) is connected with the land wheel machine driving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220373352 CN202818939U (en) | 2012-07-31 | 2012-07-31 | Circumferential hole air-aspiration type seed-metering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220373352 CN202818939U (en) | 2012-07-31 | 2012-07-31 | Circumferential hole air-aspiration type seed-metering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202818939U true CN202818939U (en) | 2013-03-27 |
Family
ID=47930784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220373352 Expired - Fee Related CN202818939U (en) | 2012-07-31 | 2012-07-31 | Circumferential hole air-aspiration type seed-metering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202818939U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105052316A (en) * | 2015-07-31 | 2015-11-18 | 山东农业大学 | Suction wheel type broad-width precious speed distribution apparatus |
| CN106211884A (en) * | 2016-09-13 | 2016-12-14 | 中国农业大学 | Synchronize low pressure circumference driven sucking precise seeder |
| CN110710361A (en) * | 2019-11-15 | 2020-01-21 | 南京农业大学 | Pocket wheel type seed metering device supporting accurate wheat seeding and seeding method thereof |
-
2012
- 2012-07-31 CN CN 201220373352 patent/CN202818939U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105052316A (en) * | 2015-07-31 | 2015-11-18 | 山东农业大学 | Suction wheel type broad-width precious speed distribution apparatus |
| CN106211884A (en) * | 2016-09-13 | 2016-12-14 | 中国农业大学 | Synchronize low pressure circumference driven sucking precise seeder |
| CN106211884B (en) * | 2016-09-13 | 2018-02-13 | 中国农业大学 | Synchronous low pressure circumference driven sucking precise seeder |
| CN110710361A (en) * | 2019-11-15 | 2020-01-21 | 南京农业大学 | Pocket wheel type seed metering device supporting accurate wheat seeding and seeding method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20150731 |
|
| EXPY | Termination of patent right or utility model |