CN1044378A - The outer air channel of vertical axial-flow threshing unit airstream cleaning device - Google Patents
The outer air channel of vertical axial-flow threshing unit airstream cleaning device Download PDFInfo
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- CN1044378A CN1044378A CN 90100171 CN90100171A CN1044378A CN 1044378 A CN1044378 A CN 1044378A CN 90100171 CN90100171 CN 90100171 CN 90100171 A CN90100171 A CN 90100171A CN 1044378 A CN1044378 A CN 1044378A
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- cleaning
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Abstract
The outer air channel of vertical axial-flow threshing unit airstream cleaning device is a kind of cleaning plant that is used on the combine of agriculture cereal vertical axial-flow thresher or vertical axial-flow threshing unit.Its cleaning principle system utilizes the different coefficients that float with glume bran residual of notch board emersion object seed, in 360 ° of notch board outer ring emersion object cavitys, cleans and second cleaning and sorting system through first, by the vertical lifting air-flow, with the clever chaff and surplus the separating of mixing.The present invention is simple in structure, takes off, divides, clear technological process is short, and the ability of cleaning is strong, provides condition for producing cheap big-and-middle-sized thresher and combine.
Description
The present invention is a kind of cleaning plant that is used on the combine of agriculture cereal vertical axial-flow thresher or vertical axial-flow threshing unit.Traditional thresher and combine; no matter be cut flow roller threshing unit or horizontal axial threshing parts; the reciprocating type reciprocating sieve of many employings is cleaned; this cleaning plant is compared with air flow cleaning; it is huge to have structure; productivity ratio is low, and the unit metal consumption is big, shortcomings such as the easy damage of vibrating mass.Original vertical axial-flow threshing unit; though also adopted air flow cleaning; but adopt the air channel, center; the emersion object that to be cleared up concentrates on the awl that gathers materials; clean area and dwindle, the coefficient of the ratio of impurity and air mass flow increases, and the ability of cleaning is restricted; thereby threshing unit productivity ratio ability is restricted, and can only be used for small-sized thresher.
The present invention adopts outer air channel air flow cleaning system; take off branch notch board (7 360 ° of vertically-arranged cylindrical shapes; Fig. 1) outer periphery one emersion object cavity (10); in cavity by first and second cleaning and sorting systems; by the vertical lifting air-flow; clever chaff and assorted surplus cleaning are gone out; threshing unit production capacity is no longer cleaned the restriction of ability; cleaning area can enlarge according to the increase of cylinder productivity ratio; solved vertical axial-flow thresher production capacity bottleneck problem, started road for designing cheap simple and easy big-and-middle-sized vertical axial-flow thresher and combine.Outer air channel airstream cleaning device is simple in structure, and the threshing of threshing unit separates and cleans three road program circuits and shorten, and the ability of cleaning strengthens, and the threshing process flow process is more reasonable.
Airstream cleaning device of the present invention is made up of first and second cleaning and sorting systems.First cleans the position in vertically-arranged notch board (7) upper end emersion object cavity (10), form annular cone air draught road (11) by annular mixed flow fan inner ring (16) and outer air channel inwall (8), negative pressure by fan propeller (12) generation, with the glume bran residual of separating on the notch board, directly by outside the fan propeller aspiration machine, to share the cleaning load of second cleaning and sorting system.
The present invention's second cleaning and sorting system is by separation impeller (5), outer shroud air channel (9), and annular mixed flow fan (15) and axial screw impurities removal air channel (19) are formed.Separate impeller by a plurality of dihedral vanes (20, Fig. 1, Fig. 2) and retainer plate (25) formation.The impeller clearance is less than short cane length.Several grain-scraping plates (21) are installed below the blade, rubber mat plate is housed on the grain-scraping plate, in order to avoid seed is by crowded broken.Separate impeller and be installed on the annular bead apex groove circle (3), go up the transmission of bead apex wheel by the axle (26) that is situated between.(24) are supported by four guide wheels in cannelure circle inboard, and the groove circle must be adjusted with cylinder (2) axle concentric, and it is opposite with the cylinder direction of rotation to separate impeller.
Annular mixed flow fan (15) is by fan inner ring (16), and fan board (17) and several hypsokinesis blades (12) are made.Fan body is fixed under the cylinder (2) on the PAIPAI Cao tooth (14) with rod member (13), and with the rotation of cylinder consubstantiality, annular shaft flows to radially air draft of wind.
The impurities removal air channel is axial screw body (19), and in outer shroud air channel upper outside, impurities removal ducting outlet and Lysimachia sikokiana export (18) at same position, but are separated by fan board (17).
When crop carried out threshing by feeding mouth (1) feed roller, the emersion object of separating from notch board (7) (comprise seed, clever chaff and short cane are assorted surplus etc.) was along 360 ° of cylindrical shape notch boards diffusion whereabouts emersion object cavity (10) in equably.The emersion object of separating on notch board top is at first cleaned air channel (11) sucking-off by first and is partly mixed surplus.All the other most of emersion objects drop on the separation impeller of reverse rotation (5), and emersion object is subjected to the impeller centrifugal action, and throwing to the periphery on blade enters porch, outer shroud air channel (6).In outer shroud air channel (9),, make air-flow from separating the impeller bottom by the negative pressure that ring-type fan produced, by rising on the impeller clearance, (the inclination separate blade of rotation also produces ascending air), assorted surplus and clever chaff that will be lighter is sent annular passage to.Again by fan propeller, outside the discharge machine of spiral impurities removal air channel (19).Heavier seed by separating the impeller outer splaying, drops to collection grain dish, by grain-scraping plate (21) seed of cleaning is discharged by put out cereal mouthful (22) then.
The present invention is according to the emersion object aerodynamic characteristics, and clever chaff has the different coefficients that float with seed, thereby utilizes their different critical speeds, carries out separating cleaning in the vertical gas flow field.MSDS open fire rice critical speed is 10.1 meter per seconds, and wheat is the 8.9-11.5 meter per second, and barley is the 8.4-10.8 meter per second, and the clever chaff critical speed of rice wheat then is the 0.6-5.0 meter per second.Short cane (less than 100 millimeters, being horizontal level) is the 2.5-3.2 meter per second.(the material critical speed is measured in the vertical gas flow field with determining instrument.With outer shroud of the present invention air channel uprush is consistent).According to this determination data, porch, outer shroud air channel wind speed is designed to 6 meter per seconds, emersion object drops to and separates on the impeller, because of rice wheat grain husk chaff critical speed less than 6 meter per seconds, then be inhaled into the air channel, rice wheat seed critical speed then can not be inhaled into the air channel greater than 6 meter per seconds, and drop to collection grain dish, therefore can obtain to separate.
Because short cane is not approximate spheroid, its critical flotation velocity is different different because of the orientation in airflow field.In airflow field, be erectility as short cane, its critical speed during than level big 2-3 doubly can't be siphoned away by air-flow, this is the main cause that general air flow cleaning is difficult to obtain higher cleannes.
The effect that separates impeller is will to drop to short cane horizontal feed on the impeller to the air channel suction inlet, is horizontal at this moment because of lacking cane, and critical speed is then picked up by air-flow easily less than 6 meter per seconds.When short cane disengaging impeller moves upward, may produce any rolling is to tilt or erectility, showy coefficient will increase, but the air channel inlet is tapered, the air channel narrows down gradually, wind speed also increases thereupon, and therefore cane can both be by outside the air-flow aspiration machine no matter be what orientation, thereby can obtain higher cleannes.
Description of drawings:
General layout is cleaned in the outer air channel of Fig. 1 vertical axial-flow threshing unit
Fig. 2 separates impeller and is fixed on the annular bead apex groove circle
Claims (6)
1, the outer air channel of vertical axial-flow threshing unit airstream cleaning device is a kind of cleaning plant that is used on the combine of agriculture cereal vertical axial-flow thresher and vertical axial-flow threshing unit.Feature of the present invention is to form emersion object cavity (10) 360 ° of vertically-arranged notch board outer rings, configuration first and second cleaning and sorting systems in cavity.First cleaning and sorting system is positioned at vertically-arranged notch board upper end, cleans the clever chaff of separating on notch board top and mixes surplus.Second cleaning and sorting system is by separating impeller (5), and outer shroud air channel (9), annular mixed flow fan (15) and axial screw impurities removal air channel are formed.Main remaining glume bran residual is cleared up away.
2, first cleaning and sorting system according to claim 1, it is characterized in that in the emersion object cavity of notch board upper end, form ring-type cone air draught road by annular mixed flow fan inner ring (16) and outer air channel inwall (8), fan propeller through rotation produces negative pressure, the glume bran residual that notch board top is separated is directly by outside the fan propeller aspiration machine.
3, separate impeller according to described second cleaning and sorting system of claim 1, it is characterized in that constituting by a plurality of dihedral vanes (20) and retainer plate (25).The impeller clearance is less than short cane length.Several grain-scraping plates (21) are installed below the blade.Separate impeller and be installed in that (3, Fig. 2), annular race circle inboard is supported by four directive wheels (24) on the annular bead apex race circle.The groove circle must be concentric with cylinder.It is opposite with the cylinder direction of rotation to separate impeller.
4,, it is characterized in that by fan inner ring (16) fan board (17) and several back rake angle blades (12) are formed according to the described annular mixed flow fan of claim 1.Fan propeller is positioned at first and second cleans above the ducting outlet, and mixed flow fan produces annular shaft and flows to wind and radially air draft.Fan body is fixed under the cylinder by rod member (13) that (14) together rotate with cylinder (2) on the PAIPAI Cao tooth.
5, lower end, outer shroud air channel according to claim 1 must be the taper inlet scoop, and the taper duct cross-section is long-pending to be dwindled gradually, and wind speed increases gradually.
6, according to the impurities removal air channel of the described annular mixed flow fan of claim 1, it is characterized in that the axial screw body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90100171 CN1013240B (en) | 1990-01-15 | 1990-01-15 | Seed-selecting device utilizing tunnel air-flow outside a vertical axial-flow thresher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90100171 CN1013240B (en) | 1990-01-15 | 1990-01-15 | Seed-selecting device utilizing tunnel air-flow outside a vertical axial-flow thresher |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1044378A true CN1044378A (en) | 1990-08-08 |
| CN1013240B CN1013240B (en) | 1991-07-24 |
Family
ID=4876508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90100171 Expired CN1013240B (en) | 1990-01-15 | 1990-01-15 | Seed-selecting device utilizing tunnel air-flow outside a vertical axial-flow thresher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1013240B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1042488C (en) * | 1993-06-05 | 1999-03-17 | 东北农学院 | Four-in-one treater for grain threashing matter |
| CN102625652A (en) * | 2009-08-14 | 2012-08-01 | 爱科股份公司 | Combine harvester |
| CN102934567A (en) * | 2012-10-31 | 2013-02-20 | 江苏大学 | 360-degree axial flow threshing separation system |
| CN103947386A (en) * | 2014-05-09 | 2014-07-30 | 黑河市方圆农机技术开发有限责任公司 | Bottom-feeding vertical type axial flow threshing device |
| CN108012672A (en) * | 2018-01-03 | 2018-05-11 | 桂林理工大学 | Dynamic equilibrium sheller unit with servo feedback control function |
-
1990
- 1990-01-15 CN CN 90100171 patent/CN1013240B/en not_active Expired
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1042488C (en) * | 1993-06-05 | 1999-03-17 | 东北农学院 | Four-in-one treater for grain threashing matter |
| CN102625652A (en) * | 2009-08-14 | 2012-08-01 | 爱科股份公司 | Combine harvester |
| CN102625652B (en) * | 2009-08-14 | 2014-10-15 | 爱科股份公司 | Combine harvester |
| CN102934567A (en) * | 2012-10-31 | 2013-02-20 | 江苏大学 | 360-degree axial flow threshing separation system |
| CN102934567B (en) * | 2012-10-31 | 2015-06-10 | 江苏大学 | 360-degree axial flow threshing separation system |
| CN103947386A (en) * | 2014-05-09 | 2014-07-30 | 黑河市方圆农机技术开发有限责任公司 | Bottom-feeding vertical type axial flow threshing device |
| CN108012672A (en) * | 2018-01-03 | 2018-05-11 | 桂林理工大学 | Dynamic equilibrium sheller unit with servo feedback control function |
| CN108012672B (en) * | 2018-01-03 | 2023-10-03 | 苏州萨伯工业设计有限公司 | Dynamic balance threshing device with servo feedback control function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1013240B (en) | 1991-07-24 |
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