CN2549717Y - Open type adjustable screening device - Google Patents
Open type adjustable screening device Download PDFInfo
- Publication number
- CN2549717Y CN2549717Y CN 02263009 CN02263009U CN2549717Y CN 2549717 Y CN2549717 Y CN 2549717Y CN 02263009 CN02263009 CN 02263009 CN 02263009 U CN02263009 U CN 02263009U CN 2549717 Y CN2549717 Y CN 2549717Y
- Authority
- CN
- China
- Prior art keywords
- sieve
- screw feeder
- auger
- utility
- fan
- Prior art date
- 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.)
- Expired - Fee Related
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Abstract
The utility model belongs to the agricultural machine, which relates to an open type adjustable screening device. The utility model comprises a shaking cleaning sieve formed by the upper sieve and lower sieve. An auger for collecting the crop seeds is positioned under the shaking cleaning sieve, and a fan is positioned in front of the auger. Compared with the upper sieve, the front end edge of the lower sieve is contracted a certain distance backwards, namely forming an air conduit port having no shield above the front of the auger, and the air outlet of the fan is towards the air conduit port. The utility model can effectively prevent the short stalk from falling into the auger and reduce the dirt percentage in the seed.
Description
Technical field
The utility model belongs to farm machinery, relates to a kind of open adjustable screen device down that combine is cleaned parts that is used for.
Background technology
Combine clean following screen device in the parts, generally comprise the vibration sorting screen of a double-layer structure, the screw feeder that is used for collecting crop kernel is installed below vibration sorting screen, be equipped with in screw feeder the place ahead and blow out fan.The following sieve of the vibration sorting screen in the existing structure blocks the screw feeder top fully, all falls into screw feeder by sieving down through the seed that screens.Handle in the seed that obtains often assorted surplus more through this structure, wherein most of assorted surplus be the short cane of some length 40～50mm, this mainly is because these short cane proportions are bigger, fall into screw feeder from sieving down easily, so just need in airing seed process, after handling, artificial removing just can put in storage, thereby time-consuming, effort.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of and can prevent effectively that short cane from falling into screw feeder, the open adjustable screen device down of reduction seed percentage of impurity.
Open adjustable screen device down of the present utility model includes a vibration sorting screen that is become with following screen banks by top sieve, the screw feeder that is used for collecting crop kernel is installed below vibration sorting screen, be equipped with in screw feeder the place ahead and blow out fan, described sieve is down compared with top sieve, its front edge is the indentation certain distance backward, promptly form a wind passage mouth that does not block in the screw feeder front upper place, the described air outlet of fan that blows out is towards above-mentioned wind passage mouth.In addition, described sieve down can adopt telescopic structure, that is, the sieve sheet of following sieve is installed in the gathering sill of fore-and-aft direction, and the sieve sheet can be moved forward and backward in gathering sill, above-mentioned wind passage mouth can be sheltered from when the sieve sheet is pulled out, to adapt to different situations.
The utility model is owing to the following sieve leading portion at vibration sorting screen has adopted open structure, make in watering and separation procedure, short cane is because of having bigger wind area, blow and sieved the rear portion downwards by stronger wind-force, and then be transported in the after-treatment device of machine, significantly reduce it and fallen into the chance of screw feeder, thereby can reduce the percentage of impurity of cleaning the back seed.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the following sieve structure schematic diagram of vibration sorting screen;
Fig. 3 be the sieve sheet pull out at present sieve structural representation;
The whole structural representation of cleaning parts when the sieve sheet that Fig. 4 sieves under being is pulled out.
Embodiment
As shown in Figure 1, open adjustable screen device down of the present utility model includes vibration sorting screen 1, screw feeder 2 and blows out fan 3, vibration sorting screen is by top sieve 4 and following the sieve for 5 two-layer compositions, under sieve 4 and compare with top sieve 5, its front edge is the indentation certain distance backward, promptly form a wind passage mouth that does not block 6, and the air outlet that blows out fan 3 is promptly towards wind passage mouth 6 in the front upper place of screw feeder 2.
In use,, make stronger air-flow can directly blow to top sieve 4, make the assorted surplus and seed that is deposited on the top sieve obtain sufficient selection by winnowing, reduced the chance that assorted surplus and short cane is fallen by top sieve because sieve 5 leading portions have open wind passage mouth down.When most seeds and a spot of short cane when top sieve falls because seed proportion is bigger, just directly fall into screw feeder, and short cane sieves the rear portion because of its windward side is blowed to down by air-flow greatly, and then delivers in the after-treatment device 9 by vibration.
As Fig. 2～shown in Figure 4, following sieve 5 is telescopic structure, that is, the sieve sheet 7 of following sieve 5 is installed in the gathering sill 8 of fore-and-aft direction, and the sieve sheet can be moved forward and backward in gathering sill.When crop contains surface water or crop when moist especially, because of seed and assorted surplus stick together not easily separated, can will descend the sieve sheet of sieve to pull out forward, the wind passage mouth of the front upper place of screw feeder is sheltered from, and open part has just been transferred to the back upper place of screw feeder, just can directly not fall into screw feeder with coherent light the mixing of seed this moment, and most short canes are pressed in the after-treatment device 9 by the air-flow of lower air duct after having obtained separating by vibration.
Claims (2)
1, a kind of open adjustable screen device down, include a vibration sorting screen (1) of forming by top sieve (4) and following sieve (5), the screw feeder (2) that is used for collecting crop kernel is installed below vibration sorting screen, be equipped with in screw feeder the place ahead and blow out fan (3), it is characterized in that: described sieve (5) is down compared with top sieve (4), its front edge is the indentation certain distance backward, promptly constitute a wind passage mouth that does not block (6), the described above-mentioned wind passage mouth of air outlet subtend (6) that blows out fan (3) in screw feeder (2) front upper place.
2, open adjustable screen device down according to claim 1, it is characterized in that: described sieve (5) down is telescopic structure, that is, the sieve sheet (7) of following sieve (5) is installed in the gathering sill (8) of fore-and-aft direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02263009 CN2549717Y (en) | 2002-07-11 | 2002-07-11 | Open type adjustable screening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02263009 CN2549717Y (en) | 2002-07-11 | 2002-07-11 | Open type adjustable screening device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2549717Y true CN2549717Y (en) | 2003-05-14 |
Family
ID=33729476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02263009 Expired - Fee Related CN2549717Y (en) | 2002-07-11 | 2002-07-11 | Open type adjustable screening device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2549717Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101926255A (en) * | 2009-06-18 | 2010-12-29 | 株式会社久保田 | Threshing device |
-
2002
- 2002-07-11 CN CN 02263009 patent/CN2549717Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101926255A (en) * | 2009-06-18 | 2010-12-29 | 株式会社久保田 | Threshing device |
| CN101926255B (en) * | 2009-06-18 | 2014-12-24 | 株式会社久保田 | Threshing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |