CN204069711U - A kind of axial seal air-suction seeding unit - Google Patents
A kind of axial seal air-suction seeding unit Download PDFInfo
- Publication number
- CN204069711U CN204069711U CN201420520937.7U CN201420520937U CN204069711U CN 204069711 U CN204069711 U CN 204069711U CN 201420520937 U CN201420520937 U CN 201420520937U CN 204069711 U CN204069711 U CN 204069711U
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- seed
- negative pressure
- pressure cavity
- seed plate
- hole
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- Soil Working Implements (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
The utility model discloses a kind of axial seal air-suction seeding unit, its seeding body is provided with axial center hole and the negative pressure cavity that is positioned at around axial center hole and non-negative pressure cavity, negative pressure cavity and non-negative pressure cavity cut off mutually, in axial center hole, bearing is installed, in bearing, driving shaft is installed, the side of seeding body is glued with installation seed plate on the driving shaft, the hole wall of axial center hole is extended with in the position close to seed plate the clutch shaft bearing block flange be close to seed plate towards its central axial direction, driving shaft is provided with the second bearing block flange relative with clutch shaft bearing block flange, seed plate is provided with circumferential multiple seed adsorption hole, seed adsorption hole can be communicated with non-negative pressure cavity with negative pressure cavity respectively when seed plate rotates, side seeding body being provided with seed plate is also glued with seed cabin, the thickness of clutch shaft bearing block flange is greater than the thickness of the second bearing block flange.Axial seal air-suction seeding unit of the present utility model can avoid broadcast leakage kind.
Description
Technical field
The utility model relates to a kind of sower and rotary tillage sowing machine, particularly relates to a kind of axial seal air-suction seeding unit.
Background technology
As illustrated in fig. 1 and 2, be aspiration type sowing device of the prior art, it is primarily of compositions such as seeding body 100, seed cabin 200, seed plate 300, bowl-shape pressure plates 400.Seeding body 100 does not design axial seal elastic compensating mechanism with the sealing surface of seed plate 300, always there is mismachining tolerance in seeding body 100 size of seal contact face d1, driving shaft size d2, therefore sealing surface is not there is gap to there is interference exactly, as d1 > d2, there is interference, make seed plate 300 turns motionless or rotate dumb (when rotating dumb, just produce friction, affect service life); As d1 < d2, there is gap, work as excesssive gap, the negative pressure air in a chamber can form negative-pressure air-flow, a chamber negative pressure will be made to reduce, and vacuum declines, and needs the load increasing vavuum pump, there will be time serious when seed adsorbs unreliable or diesel engine low speed on seed plate 300 can not absorbed seed, causes often occurring broadcast leakage phenomenon during sowing.
Utility model content
The purpose of this utility model is to provide a kind of axial seal air-suction seeding unit avoiding broadcast leakage kind.
For achieving the above object, the utility model provides a kind of axial seal air-suction seeding unit, comprise seeding body, described seeding body is provided with axial center hole and the negative pressure cavity that is positioned at around axial center hole and non-negative pressure cavity, described negative pressure cavity and non-negative pressure cavity cut off mutually, in described axial center hole, bearing is installed, in described bearing, driving shaft is installed, the side of described seeding body is glued with installation seed plate on the driving shaft, the hole wall of described axial center hole is extended with in the position close to seed plate the clutch shaft bearing block flange be close to seed plate towards its central axial direction, described driving shaft is provided with the second bearing block flange relative with clutch shaft bearing block flange, described seed plate is provided with circumferential multiple seed adsorption hole, described seed adsorption hole can be communicated with non-negative pressure cavity with negative pressure cavity respectively when seed plate rotates, the side described seeding body being provided with seed plate is also glued with seed cabin, the thickness of described clutch shaft bearing block flange is greater than the thickness of the second bearing block flange.
As further improvement of the utility model, there is between described seed cabin and seed plate the chamber be communicated with negative pressure cavity through seed adsorption hole, in described chamber, be also provided with spring base, described spring base is fixing on the driving shaft, and between described spring base and seed plate, elastic compression has Compress Spring.
Further improve as of the present utility model, also comprise the pad being fixed by screws in spring base end face, described spring base is provided with through hole, and described Compress Spring is contained in through hole, and described Compress Spring elastic compression is between seed plate and pad.
Improve as another kind of the present utility model, described seed adsorption hole is Y type, the degree of depth of described seed adsorption hole slightly larger than or be less than the diameter of seed.
Compared with prior art, axial seal air-suction seeding unit of the present utility model is greater than the thickness of the second bearing block flange due to the thickness of clutch shaft bearing block flange, all the time gap is had between second bearing block flange and seed plate, can remain to fit in the axial seal face of seed plate and seeding body, make negative-pressure air-flow can not enter negative pressure cavity from axial seal face, make the advantages of good adsorption effect of seed adsorption hole, thus the situation of broadcast leakage kind can be avoided to occur; Under the effect of Compress Spring, the axial seal mask of seed plate and seeding body can be made to have automatic compensation function, the axial seal face of seed plate and seeding body is made to fit further, thus ensure that the positiver sealing in seed plate and seeding body axial seal face, make negative-pressure air-flow can not enter negative pressure cavity from axial seal face, make the advantages of good adsorption effect of seed adsorption hole, thus the situation of broadcast leakage kind can be avoided further to occur; Adopt the degree of depth slightly larger than or the seed adsorption hole that is less than seed diameter can ensure can store single seed in seed adsorption hole, avoid the situation of broadcast leakage kind to occur.
By following description also by reference to the accompanying drawings, the utility model will become more clear, and these accompanying drawings are for explaining embodiment of the present utility model.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of aspiration type sowing device of the prior art.
Fig. 2 is the cutaway view of aspiration type sowing device of the prior art.
Fig. 3 is the schematic diagram of the axial seal air-suction seeding unit in the utility model.
Fig. 4 is the cutaway view of Fig. 3.
Fig. 5 is the partial enlarged drawing of Fig. 4.
Embodiment
With reference now to accompanying drawing, describe embodiment of the present utility model, element numbers similar in accompanying drawing represents similar element.
Please refer to Fig. 3-5, described axial seal air-suction seeding unit comprises seeding body 1, bearing 2, driving shaft 3, seed plate 4, seed cabin 5, spring base 6, Compress Spring 7, screw 8 and pad 9.
Described seeding body 1 is provided with axial center hole and the negative pressure cavity A that is positioned at around axial center hole and non-negative pressure cavity B, described negative pressure cavity A and non-negative pressure cavity B cut off mutually.Described negative pressure cavity A forms negative pressure by vavuum pump withdrawing air, and described non-negative pressure cavity B is connected with air.Described seeding body 1 is also provided with the sowing opening C be communicated with non-negative pressure cavity B.Be provided with bearing 2 in the axial center hole of described seeding body 1, be provided with driving shaft 3 in described bearing 2, the two ends of described driving shaft 3 are all stretched out outside seeding body 1.One end that described driving shaft 3 stretches out outside seeding body 1 is fixed with spring base 6 by screw 8, the hole wall of described axial center hole is extended with clutch shaft bearing block flange 11 in the one end close to spring base 6 towards its central axial direction, described driving shaft 3 is provided with the second bearing block flange 31 relative with clutch shaft bearing block flange 11, and the thickness L1 of described clutch shaft bearing block flange 11 is greater than the thickness L2 of the second bearing block flange 31.Described spring base 6 is provided with through hole 61, accommodates Compress Spring 7 in described through hole 61, and the end face of described spring base 6 is provided with by the fixing pad 9 of this screw 8, and described pad 9, for being sealed by through hole 61, makes through hole 61 become blind hole.
Described seed plate 4 is positioned at the side of seeding body 1 and is arranged on the one end of the attachment screw 8 on driving shaft 3, and described seed plate 4 to be close on seeding body 1 and clutch shaft bearing block flange 11 and can to rotate with driving shaft 3.Described Compress Spring 7 elastic compression is between seed plate 4 and pad 9.Described seed plate 4 is provided with circumferential multiple seed adsorption hole 41, and the adsorbable multiple seed M of each seed adsorption hole 41, described seed adsorption hole 41 can be communicated with non-negative pressure cavity B with negative pressure cavity A respectively when seed plate 4 rotates.Described seed adsorption hole 41 in Y type, the degree of depth of described seed adsorption hole 41 slightly larger than or be less than the diameter of seed M.
Described seed cabin 5 is located at the side that seeding body 1 is provided with seed plate 4, and described seed cabin 5 is close on seeding body 1.Described seed plate 4 is between seeding body 1 and seed cabin 5, and described seed cabin 5 is for splendid attire seed M.Have the chamber D be communicated with negative pressure cavity A through seed adsorption hole 41 between described seed cabin 5 and seed plate 4, described spring base 6, screw 8, Compress Spring 7 and pad 9 are all positioned at chamber D.
During use, seed is contained in seed cabin 5, utilizing vavuum pump to be extracted out by air makes negative pressure cavity A form negative pressure, at this moment the seed adsorption hole 41 on seed plate 4 forms negative-pressure air-flow (as shown by the arrows in figure 4 direction), seeding process, seed plate 4 rotates under driving shaft 3 drives, when seed adsorption hole 41 in rotary course on seed plate 4 contacts with the seed bottom seed cabin 5, seed is adsorbed on the seed adsorption hole 41 of seed plate 4, when seed adsorption hole 41 a certain on seed plate 4 forwards non-negative pressure cavity B position to, to cut off with negative pressure cavity A due to non-negative pressure cavity B and communicate with air, therefore seed just falls to non-negative pressure cavity B position, fall into sowing opening C, thus realize seeding sowing.
Thickness L1 due to clutch shaft bearing block flange 11 is greater than the thickness L2 of the second bearing block flange 31, all the time gap is had between second bearing block flange 31 and seed plate 4, can remain that seed plate 4 is fitted with the axial seal face of seeding body 1, under the effect of Compress Spring 7, seed plate 4 can be made to have automatic compensation function with the axial seal mask of seeding body 1, seed plate 4 is made to fit with the axial seal face of seeding body 1 further, thus ensure that the positiver sealing in seed plate 4 and seeding body 1 axial seal face, make negative-pressure air-flow can not enter negative pressure cavity A from axial seal face, make the advantages of good adsorption effect of seed adsorption hole 21, thus the situation of broadcast leakage kind can be avoided to occur.
More than in conjunction with most preferred embodiment, the utility model is described, but the utility model is not limited to the embodiment of above announcement, and should contain various carry out according to essence of the present utility model amendment, equivalent combinations.
Claims (4)
1. an axial seal air-suction seeding unit, comprise seeding body (1), described seeding body (1) is provided with axial center hole and the negative pressure cavity (A) that is positioned at around axial center hole and non-negative pressure cavity (B), described negative pressure cavity (A) and non-negative pressure cavity (B) cut off mutually, bearing (2) is installed in described axial center hole, driving shaft (3) is installed in described bearing (2), the side of described seeding body (1) is glued with the seed plate (4) be arranged on driving shaft (3), the hole wall of described axial center hole is extended with in the position close to seed plate (4) the clutch shaft bearing block flange (11) be close to seed plate (4) towards its central axial direction, described driving shaft (3) is provided with the second bearing block flange (31) relative with clutch shaft bearing block flange (11), described seed plate (4) is provided with circumferential multiple seed adsorption hole (41), described seed adsorption hole (41) can be communicated with non-negative pressure cavity (B) with negative pressure cavity (A) respectively when seed plate (4) rotates, the side described seeding body (1) being provided with seed plate (2) is also glued with seed cabin (5), it is characterized in that: the thickness of described clutch shaft bearing block flange (11) is greater than the thickness of the second bearing block flange (31).
2. axial seal air-suction seeding unit as claimed in claim 1, it is characterized in that: there is between described seed cabin (5) and seed plate (4) chamber (D) be communicated with negative pressure cavity (A) through seed adsorption hole (41), spring base (6) is also provided with in described chamber (D), described spring base (6) is fixed on driving shaft (3), and between described spring base (6) and seed plate (4), elastic compression has Compress Spring (7).
3. axial seal air-suction seeding unit as claimed in claim 2, it is characterized in that: also comprise the pad (9) being fixed on spring base (6) end face by screw (8), described spring base (6) is provided with through hole, described Compress Spring (7) is contained in through hole, and described Compress Spring (7) elastic compression is between seed plate (4) and pad (9).
4. axial seal air-suction seeding unit as claimed in claim 1, is characterized in that: described seed adsorption hole (41) in Y type, the degree of depth of described seed adsorption hole (41) slightly larger than or be less than the diameter of seed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420520937.7U CN204069711U (en) | 2014-09-11 | 2014-09-11 | A kind of axial seal air-suction seeding unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420520937.7U CN204069711U (en) | 2014-09-11 | 2014-09-11 | A kind of axial seal air-suction seeding unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204069711U true CN204069711U (en) | 2015-01-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420520937.7U Expired - Fee Related CN204069711U (en) | 2014-09-11 | 2014-09-11 | A kind of axial seal air-suction seeding unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204069711U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105165189A (en) * | 2015-10-29 | 2015-12-23 | 东北农业大学 | Air suction type electric seed discharge plate |
| CN110972637A (en) * | 2019-11-22 | 2020-04-10 | 武汉市农业科学院 | Similar-ball type small-particle-size vegetable seed seeding device |
-
2014
- 2014-09-11 CN CN201420520937.7U patent/CN204069711U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105165189A (en) * | 2015-10-29 | 2015-12-23 | 东北农业大学 | Air suction type electric seed discharge plate |
| CN110972637A (en) * | 2019-11-22 | 2020-04-10 | 武汉市农业科学院 | Similar-ball type small-particle-size vegetable seed seeding device |
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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: 20150107 Termination date: 20170911 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |