CN111957567B - Negative pressure type grain secondary air separation device - Google Patents
Negative pressure type grain secondary air separation device Download PDFInfo
- Publication number
- CN111957567B CN111957567B CN202010199134.6A CN202010199134A CN111957567B CN 111957567 B CN111957567 B CN 111957567B CN 202010199134 A CN202010199134 A CN 202010199134A CN 111957567 B CN111957567 B CN 111957567B
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- winnowing
- shaft
- fixed
- air
- shell
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
- B07B7/01—Selective separation of solid materials carried by, or dispersed in, gas currents using gravity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
- B07B11/06—Feeding or discharging arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
- B07B9/02—Combinations of similar or different apparatus for separating solids from solids using gas currents
Landscapes
- Threshing Machine Elements (AREA)
Abstract
The invention relates to a negative pressure type two-stage grain winnowing device, wherein a first winnowing part A comprises a winnowing shell, a winnowing shaft and Yang Gupian, an air channel is arranged at the upper part of the winnowing shell, the inside of the air channel is communicated with the inside of the winnowing shell, an air suction port A is arranged at the upper part of the air channel, a left air inlet A and a discharge port are arranged at the left end of the winnowing shell, a right air inlet A and a feed port are arranged at the right end of the winnowing shell, a plurality of winnowing pieces are fixed on the winnowing shaft, and two ends of a shaft head are respectively arranged on a left bearing seat and a right bearing seat; the second winnowing portion B comprises an upper bearing frame, a lower bearing frame and a spiral shaft, wherein the upper bearing frame is fixed on the upper portion of the inner wall of the outer cylinder, the lower bearing frame is fixed on the upper portion of the inner wall of the cone, the short shaft is fixed on the top of the inner cylinder, the short shaft is provided with an upper bearing, the upper bearing is arranged on the upper bearing frame, the outer wall of the lower portion of the inner cylinder is fixed with a plurality of fan blades, the bottom of the inner cylinder is fixed with the spiral shaft, the spiral shaft is provided with a lower bearing, and the lower bearing is arranged on the lower bearing frame.
Description
Technical Field
The invention relates to the technical field of agricultural machinery, in particular to a negative pressure type grain secondary air separation device.
Background
The existing cleaning methods adopted by the combine harvester and the threshing machine mostly adopt a fan blowing method, the fan is arranged below the screen, air blown by the fan faces grains falling from the screen, light impurities are blown out by the air in the process of falling of the grains in the air, heavy grains fall into a granary through a conveying device, the cleaning method has good cleaning effect on grains with big grains such as corns, wheat and soybeans, but has poor cleaning effect on grains with small grains such as millet and rape, the air quantity is large, the grains are easy to blow out, and the air quantity is small, and the grains cannot be blown out. Because of the limitation of the height and the volume of the combine harvester and the threshing machine, the height of the air duct is relatively low, grains fall from the sieve, stay in the air for too short time, and some impurities fall without blowing out and are mixed with grains, so that the dryness of the grains is affected. If the air quantity of the fan is increased, seeds are easily blown out, and loss is caused. If the operation is carried out at the village side or the roadside, the grain is cleaned by the cleaning method, the blown impurities are not easy to collect, the lighter impurities fly up along with the wind, and the environment is polluted.
The ZL200820001625X patent discloses a grain cleaning device which has good air separation performance and less loss, but has a disadvantage that when relatively long and relatively large impurities are sucked, the impurities are mutually overlapped on the discharge port, the more accumulated impurities cause the blockage of the discharge port, if the impurities are not cleaned timely, the grains are sucked out by an exhaust fan along with the impurities, and the loss is caused.
Disclosure of Invention
Aiming at the problems of the technology, the invention provides a negative pressure type grain secondary air separation device with good air separation effect, high efficiency and small loss.
In order to achieve the above object, the present invention is achieved by the following technical scheme: a negative pressure type two-stage grain winnowing device comprises a first winnowing part A and a second winnowing part B, wherein the first winnowing part A and the second winnowing part B are connected through an air pipe elbow; the first winnowing part A comprises a winnowing shell, a winnowing shaft and winnowing pieces, wherein an air channel is formed in the upper part of the winnowing shell, the inside of the air channel is communicated with the inside of the winnowing shell, an air suction port A is formed in the upper part of the air channel, a left air inlet A and a feed inlet are formed in the left end of the winnowing shell, a right air inlet A and a discharge port are formed in the right end of the winnowing shell, the winnowing pieces are fixed on the winnowing shaft and are axially arranged and distributed on the winnowing shaft in an inclined mode, two ends of a shaft head are respectively arranged on a left bearing seat and a right bearing seat, and a driving wheel is arranged at one end of the shaft head;
the second winnowing portion B comprises an upper bearing frame, a lower bearing frame and a spiral shaft, wherein the upper bearing frame is fixed on the upper portion of the inner wall of the outer cylinder body, the lower bearing frame is fixed on the upper portion of the inner wall of the lower cone, the short shaft is fixed on the top of the inner cylinder body, the short shaft is provided with an upper bearing, the upper bearing is arranged on the upper bearing frame, a plurality of fan blades are fixed on the outer wall of the lower portion of the inner cylinder body, the left air inlet B and the right air inlet B are opposite to the fan blades, the spiral shaft is fixed on the bottom of the inner cylinder body, the spiral shaft is provided with a lower bearing, and the lower bearing is arranged on the lower bearing frame.
The invention has the following beneficial effects: the invention relates to a negative pressure type grain secondary air separation device, which can suck out most of impurities lighter than grains and few light grains in grains from an air suction inlet in a first-stage air separation part, and enter a second air separation part through an air pipe elbow, and can suck out more than 99% of impurities lighter than grains from the air suction inlet in the second air separation part; but also can separate out the grains mixed with impurities and discharge the grains from the discharge port. Thus, the cleanliness of the seeds can be greatly improved, and the cleaning loss can be greatly reduced; the impurities discharged by the exhaust fan can be collected by bag dust removal or other methods, so that the environmental pollution is greatly reduced.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a schematic diagram of the structure of a first air separation part A and a second air separation part B of the invention after the air pipe elbow connection;
FIG. 2 is a schematic view of a left-axis side partial cut-away structure of a first air separation section A according to the present invention;
FIG. 3 is a schematic view of the right axial side structure of the first air separation part A;
FIG. 4 is a right side A cross-sectional view of a first air separation section A of the present invention;
FIG. 5 is a schematic view of a second air separation section B of the present invention in partial cross-section;
fig. 6 is a plan view and a cross-sectional view of a second air separation unit B according to the present invention.
1. The air duct, the air separation shell, the material outlet, the grain lifting shaft, the grain lifting sheets, the material inlet, the left air inlet A, the left bearing seat, the right bearing seat, the air suction inlet A, the right air inlet A, the driving wheel, the air suction inlet B, the upper bearing frame, the upper bearing, the inner cylinder body, the outer cylinder body, the right air inlet B, the air blade, the lower bearing frame, the lower cone body, the spiral shaft, the air outlet, the lower bearing, the left air inlet B, the short shaft and the air pipe elbow.
Detailed Description
The invention will now be described in further detail with reference to the drawings and to specific examples.
As seen in fig. 1-6: the negative pressure type two-stage grain winnowing device comprises a first winnowing part A and a second winnowing part B, wherein the first winnowing part A and the second winnowing part B are connected through an air pipe elbow 27; the first winnowing portion A comprises a winnowing shell 2, a winnowing shaft 4 and winnowing pieces 5, wherein an air channel 1 is arranged at the upper part of the winnowing shell 2, the inside of the air channel 1 is communicated with the inside of the winnowing shell 2, an air suction port A10 is arranged at the upper part of the air channel 1, a left air inlet A7 and a feed inlet 6 are arranged at the left end of the winnowing shell 2, a right air inlet A11 and a discharge port 3 are arranged at the right end of the winnowing shell 2, a plurality of winnowing pieces 5 are fixed on the winnowing shaft 4, the winnowing pieces 5 are axially arranged and distributed on the winnowing shaft 4 in an inclined manner, two ends of a shaft head are respectively arranged on a left bearing seat 8 and a right bearing seat 9, and a driving wheel 12 is arranged at one end of the winnowing shell;
the second winnowing portion B comprises an upper bearing frame 14, a lower bearing frame 20 and a spiral shaft 22, wherein the upper bearing frame 14 is fixed on the upper portion of the inner wall of the outer cylinder 17, the lower bearing frame 20 is fixed on the upper portion of the inner wall of the lower cone 21, a short shaft 26 is fixed on the top of the inner cylinder 16, an upper bearing 15 is arranged on the short shaft 26, the upper bearing 15 is arranged on the upper bearing frame 14, a plurality of fan blades 19 are fixed on the outer wall of the lower portion of the inner cylinder 16, a left air inlet B25 and a right air inlet B18 are opposite to the fan blades 19, the spiral shaft 22 is fixed on the bottom of the inner cylinder 16, a lower bearing 24 is arranged on the spiral shaft 22, and the lower bearing 24 is arranged on the lower bearing frame 20.
The specific working principle and the steps are as follows:
when the threshing machine is used, the exhaust fan is started, so that negative pressure is generated in the first air separation part A and the second air separation part B, threshed grains are sent into the feed inlet 6, and the grains are lifted by the rotary grain lifting sheets 5, so that a rotary hollow sparse long cylindrical grain layer is formed in the air separation shell 2; the grain lifting sheets 5 are obliquely arranged, and the grains can move a little toward the discharge hole 3 until being discharged from the discharge hole 3 after rotating for one circle under the influence of the oblique thrust of the grain lifting sheets 5. The wind entering from the left air inlet A7 and the right air inlet A11 blows impurities lighter than the grains and little light grains to enter the second winnowing portion B through the air duct 1, the air suction inlet A10, the air duct elbow 27, the left air inlet B25 and the right air inlet B18. The longer winnowing shell 2 makes cereal remove the time longer to discharge gate 3 from feed inlet 6, abundant winnowing time, has guaranteed that most impurity and very little light seed grain that are lighter than the seed grain inhale second winnowing portion B.
The second winnowing portion B is internally negative pressure, the left air inlet B25 and the right air inlet B18 are tangent to the outer wall of the outer cylinder 17, impurities lighter than grains and few grains light enter the second winnowing portion B, a cyclone rotating at a high speed is generated in the outer cylinder 17, the air suction opening B13 is arranged at the top of the outer cylinder 17, the impurities lighter than grains are large in size and light in weight, rise while rotating, are finally discharged from the air suction opening B13, few grains light in weight, fall while rotating, finally fall into the cone 21, are discharged from the discharge opening 23 under the thrust force of the rotating screw shaft 22, and enter the screening device for screening.
The foregoing is merely a best embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions easily conceivable by those skilled in the art within the technical scope of the present invention are intended to be covered by the protection scope of the present invention.
Claims (1)
1. A negative pressure type two-stage grain winnowing device comprises a first winnowing portion A and a second winnowing portion B, wherein the first winnowing portion A and the second winnowing portion B are connected through an air pipe elbow (27); the method is characterized in that:
the first winnowing portion A comprises a winnowing shell (2), a winnowing shaft (4) and winnowing pieces (5), an air duct (1) is arranged on the upper portion of the winnowing shell (2), the air duct (1) is internally communicated with the air duct (2), an air suction opening A (10) is arranged on the upper portion of the air duct (1), a left air inlet A (7) and a feeding opening (6) are arranged at the left end of the winnowing shell (2), a right air inlet A (11) and a discharging opening (3) are arranged at the right end of the winnowing shell, a plurality of winnowing pieces (5) are fixed on the winnowing shaft (4), the winnowing pieces (5) are axially arranged and distributed on the winnowing shaft (4) obliquely, two ends of a shaft head are respectively arranged on a left bearing seat (8) and a right bearing seat (9), a driving wheel (12) is arranged at one end of the winnowing piece (5) and comprises a connecting rod and a sheet plate arranged at the front end of the connecting rod, and the connecting rod and the sheet plate are coaxially arranged;
the second winnowing portion B comprises an inner cylinder body (16), an outer cylinder body (17) and a lower cone body (21), an air suction inlet B (13) is formed in the top of the outer cylinder body (17), an upper bearing frame (14) is fixed on the upper portion of the inner wall of the outer cylinder body (17), a lower bearing frame (20) is fixed on the upper portion of the inner wall of the lower cone body (21), a short shaft (26) is fixed on the top of the inner cylinder body (16), an upper bearing (15) is arranged on the short shaft (26), a plurality of fan blades (19) are fixed on the outer wall of the lower portion of the inner cylinder body (16), a left air inlet B (25) and a right air inlet B (18) are right opposite to the fan blades (19), a screw shaft (22) is fixed at the bottom of the inner cylinder body (16), the screw shaft (22) is provided with a lower bearing (24), and the lower bearing (24) is arranged on the lower bearing frame (20).
The air inlet A (10) and the air pipe elbow (27) are connected with the left air inlet B (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010199134.6A CN111957567B (en) | 2020-03-11 | 2020-03-11 | Negative pressure type grain secondary air separation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010199134.6A CN111957567B (en) | 2020-03-11 | 2020-03-11 | Negative pressure type grain secondary air separation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111957567A CN111957567A (en) | 2020-11-20 |
| CN111957567B true CN111957567B (en) | 2023-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010199134.6A Active CN111957567B (en) | 2020-03-11 | 2020-03-11 | Negative pressure type grain secondary air separation device |
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| Country | Link |
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| CN (1) | CN111957567B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2172163Y (en) * | 1993-07-21 | 1994-07-20 | 王荣恒 | Air extraction winnowing machine |
| CN102668822A (en) * | 2011-11-15 | 2012-09-19 | 河南科技大学 | Cleaning system and combined grain harvester adopting same |
| CN105309109A (en) * | 2015-11-05 | 2016-02-10 | 南宁市鼎天机械制造有限公司 | Micro rice harvester |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2018381C1 (en) * | 1991-03-05 | 1994-08-30 | Владимир Александрович Дятлов | Circulation classifier |
| CN2398022Y (en) * | 1999-11-12 | 2000-09-27 | 王荣生 | Grain screening machine |
| DE10228866A1 (en) * | 2002-06-27 | 2004-01-29 | Claas Selbstfahrende Erntemaschinen Gmbh | Wind-screen device |
| CN102577766B (en) * | 2012-03-15 | 2014-02-26 | 买提卡司木·买吐孙 | Suction type winnowing wheat thresher |
| CN203972319U (en) * | 2014-05-05 | 2014-12-03 | 红塔烟草(集团)有限责任公司 | A kind of lifting separation equipment |
| WO2018081752A1 (en) * | 2016-10-28 | 2018-05-03 | Mannarsamy Balasubramanian | Winnowing machine |
| CN106856886A (en) * | 2017-04-10 | 2017-06-20 | 华中农业大学 | A kind of light breeze screening device of rape combined harvester |
-
2020
- 2020-03-11 CN CN202010199134.6A patent/CN111957567B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2172163Y (en) * | 1993-07-21 | 1994-07-20 | 王荣恒 | Air extraction winnowing machine |
| CN102668822A (en) * | 2011-11-15 | 2012-09-19 | 河南科技大学 | Cleaning system and combined grain harvester adopting same |
| CN105309109A (en) * | 2015-11-05 | 2016-02-10 | 南宁市鼎天机械制造有限公司 | Micro rice harvester |
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| Publication number | Publication date |
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| CN111957567A (en) | 2020-11-20 |
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