CN110972725A - Centrifugal thresher is used to coarse cereals crop - Google Patents
Centrifugal thresher is used to coarse cereals crop Download PDFInfo
- Publication number
- CN110972725A CN110972725A CN201911256729.4A CN201911256729A CN110972725A CN 110972725 A CN110972725 A CN 110972725A CN 201911256729 A CN201911256729 A CN 201911256729A CN 110972725 A CN110972725 A CN 110972725A
- Authority
- CN
- China
- Prior art keywords
- strip
- shaped
- box type
- supporting plate
- threshing
- 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.)
- Pending
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F7/00—Threshing apparatus
- A01F7/02—Threshing apparatus with rotating tools
- A01F7/06—Threshing apparatus with rotating tools with axles in line with the feeding direction ; Axial threshing machines
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F12/00—Parts or details of threshing apparatus
- A01F12/44—Grain cleaners; Grain separators
- A01F12/446—Sieving means
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Threshing Machine Elements (AREA)
Abstract
The invention particularly relates to a centrifugal threshing device for coarse cereal crops, which solves the problems of poor separation effect, high kernel breakage rate and easiness in blockage of the conventional threshing device and influences threshing efficiency. A top cover is arranged at the upper end of the box type frame, a feeding opening is arranged at the lower part of the left side wall of the box type frame, a spiral feeding device and a threshing cylinder are arranged in the box type frame, a transmission shaft is arranged in the box type frame, a hollow shaft sleeve is sleeved on the transmission shaft, and a spiral pushing device is arranged on the hollow shaft sleeve; the spiral feeding device comprises a conical feeding cylinder and a spiral blade; the spiral pushing device comprises a connecting plate, a strip-shaped supporting plate is fixed on the connecting plate, a semi-arc-shaped pushing disc is arranged on the strip-shaped supporting plate, the semi-arc-shaped pushing disc is hinged with the strip-shaped supporting plate and the adjusting pull rod, and scrapers are arranged on the strip-shaped supporting plate. The invention avoids the damage to the seeds in the previous processes of impacting, kneading and combing, reduces the breakage rate, maintains the integrity of the straws and reduces the impurity content.
Description
Technical Field
The invention relates to the technical field of agriculture, in particular to an agricultural threshing device, and specifically relates to a centrifugal threshing device for coarse cereal crops.
Background
The coarse cereals are rich in nutrition and high in economic benefit, are important grain varieties for improving dietary structure and promoting nutrition and health, and are also important economic crops for improving income of farmers in the poor and boundless areas of the old and the young. Millet and buckwheat are the main components of the special coarse cereals in China, and are mainly distributed in the Hebei, Shanxi, inner Mongolia, Yunnan and other areas in China. The mechanized harvesting level of the coarse cereals is low, most of the coarse cereals are in the manual harvesting stage, the labor intensity is high, the efficiency is low, the loss is high, and the requirements of the development of the coarse cereal industry are not met.
At present, the known coarse cereal threshing device mainly realizes the separation of grains and straws by principles of impact, rubbing, combing and the like, and the main structural form comprises a corrugated rod roller type, a spike-tooth roller type, a bow-tooth roller type and the like, generally consists of a rotating roller and a fixed grid-shaped concave plate, and separates the grains from the straws by the rubbing and beating action of the corrugated rod, the spike-tooth and the bow-tooth on the crops and the combing and brushing action of the grid-shaped concave plate, and falls into a cleaning system through grid holes.
Because the rotation speed of the threshing cylinder is high, grains and straws are easy to break, the grain breaking rate is increased, meanwhile, broken straws fall into the cleaning system along with the grains, usually, the grid size of the fixed grid-type concave plate is large, grains of coarse cereals are small, a large amount of impurities also fall into the cleaning system along with the grains, and the large pressure is brought to the subsequent cleaning work. When the water content of crops is high, the crops are easy to be wound together with the threshing cylinder and clamped between the cylinder and the concave plate, even the grid concave plate is blocked.
Disclosure of Invention
The invention provides a centrifugal threshing device for coarse cereal crops, which aims to solve the problems of poor separation effect, high kernel breakage rate and easiness in blockage of the conventional threshing device and influences threshing efficiency.
The invention is realized by adopting the following technical scheme: a centrifugal threshing device for coarse cereal crops comprises a box-type frame, wherein a top cover with an arc-shaped inner wall is arranged at the upper end of the box-type frame, a feeding opening is formed in the lower portion of the left side wall of the box-type frame, a spiral feeding device and a threshing cylinder which are distributed left and right and connected with each other are arranged in the box-type frame, a transmission shaft which is connected with and coaxial with the spiral feeding device and the threshing cylinder is arranged in the box-type frame, a hollow shaft sleeve fixed with the box-type frame is sleeved on the transmission shaft, and a; the spiral feeding device comprises a conical feeding cylinder fixed on the transmission shaft, and a spiral blade arranged along the axial direction of the conical feeding cylinder is fixed on the conical feeding cylinder; the spiral pushing device comprises a connecting plate fixed on the hollow shaft sleeve, a strip-shaped supporting plate which is positioned at the upper right of the hollow shaft sleeve and is parallel to the hollow shaft sleeve is fixed on the connecting plate, adjusting pull rods which are parallel to the strip-shaped supporting plate are arranged around the strip-shaped supporting plate, a plurality of semi-arc-shaped pushing disks which are obliquely arranged along the axial direction of the strip-shaped supporting plate are arranged on the strip-shaped supporting plate, one end part of each semi-arc-shaped pushing disk is hinged to the strip-shaped supporting plate, the other end part of each semi-arc-shaped pushing disk is.
When threshing is carried out, the transmission shaft is driven to rotate at a high speed through the power mechanism, so as to drive the spiral blades and the threshing cylinder to rotate at a high speed, then crops are fed into the box-type frame through the feeding port, under the spiral extrusion action of the spiral blades, the crops enter the threshing cylinder rotating at a high speed and do high-speed rotation motion along the inner wall of the cylinder, seeds are separated from straws under the action of centrifugal force and fall into the cleaning box, the straws cannot continue to rotate at a high speed through the threshing cylinder screen, meanwhile, the spiral pushing device is kept static in the threshing cylinder, the obliquely arranged pushing disc pushes the materials rotating at a high speed along with the threshing cylinder backwards to the discharge port and out of the machine, the scraping plate scrapes the materials clinging to the inner wall of the cylinder, the overturning and scraping effects of the materials are achieved, the seeds and the straws are fully separated and thrown out of the cylinder, and the inclination angle of the, thereby adjusting the conveying speed of the materials in the threshing cylinder and overcoming the problems of poor separation effect, high seed breakage rate and easy blockage of the existing threshing device and influencing the threshing efficiency.
The threshing cylinder comprises an annular front amplitude disc, an annular middle amplitude disc and an annular rear amplitude disc which are distributed in the front-back direction, a connecting cylinder is fixed in the middle of the front side of the annular rear amplitude disc, a first spherical outside surface bearing is arranged between the connecting cylinder and the hollow shaft sleeve, a plurality of strip-shaped connecting plates which are radially distributed by taking the centers of the annular front amplitude disc, the annular middle amplitude disc and the annular rear amplitude disc as axes are fixed among the annular front amplitude disc, the annular middle amplitude disc and the annular rear amplitude disc, and a cylindrical steel wire screen is fixed on the inner wall of.
This structural design makes seed grain kick-back after striking box frame and top cap inner wall through the tube-shape steel wire screen cloth and fall into cleaning box, and the separation effect obtains further promotion.
Rubber layers are arranged on the inner walls of the box type frame and the top cover, and a second external spherical bearing is arranged between the front end part of the hollow shaft sleeve and the transmission shaft; deep groove ball bearings are arranged between the front end part and the rear end part of the transmission shaft and the box type frame; the transmission shaft is fixed with a flange plate between the cone-shaped feeding cylinder and the annular front breadth plate, and the flange plate is connected with the cone-shaped feeding cylinder and the annular front breadth plate through bolts.
The structural design meets the requirement that the threshing cylinder and the transmission shaft rotate together at high speed while the spiral pushing device and the hollow shaft keep still; meanwhile, the breakage rate of resilience of the seeds is greatly reduced by the aid of the rubber layers.
The grain threshing device has reasonable and reliable structural design, adopts a centrifugal threshing principle, separates grains from straws through centrifugal force generated by high-speed rotation, the separated grains fall into the cleaning box through the cylindrical steel wire screen, and the straws are thrown out through the rear end of the threshing cylinder, so that the damage to the grains in the previous processes of impacting, kneading and combing is avoided, the breakage rate is reduced, the integrity of the straws is kept, the impurity content is reduced, and the grain threshing device is suitable for the requirements of grain threshing.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic side view of FIG. 1;
FIG. 3 is a schematic view of the structure of the threshing cylinder of FIG. 1;
FIG. 4 is a schematic structural view of the screw pushing device in FIG. 1;
fig. 5 is a side view of fig. 4.
In the figure: 1-box type frame, 2-top cover, 3-feeding inlet, 4-threshing cylinder, 5-transmission shaft, 6-hollow shaft sleeve, 7-spiral pushing device, 8-conical feeding cylinder, 9-spiral blade, 10-connecting plate, 11-strip supporting plate, 12-adjusting pull rod, 13-semi-arc pushing disk, 14-scraping plate, 15-annular front disk, 16-annular middle disk, 17-annular rear disk, 18-connecting cylinder, 19-first spherical outside bearing, 20-strip connecting plate, 21-cylindrical steel wire screen, 22-rubber layer, 23-second spherical outside bearing, 24-deep groove ball bearing and 25-flange plate.
Detailed Description
A centrifugal threshing device for coarse cereal crops comprises a box-type frame 1, wherein a top cover 2 with an arc-shaped inner wall is arranged at the upper end of the box-type frame 1, a feeding opening 3 is arranged at the lower part of the left side wall of the box-type frame 1, a spiral feeding device and a threshing cylinder 4 which are distributed left and right and are mutually connected are arranged in the box-type frame 1, a transmission shaft 5 which is connected with and coaxial with the spiral feeding device and the threshing cylinder 4 is arranged in the box-type frame 1, a hollow shaft sleeve 6 fixed with the box-type frame 1 is sleeved on the transmission shaft 5, and a spiral pushing device 7;
the spiral feeding device comprises a conical feeding cylinder 8 fixed on the transmission shaft 5, and a spiral blade 9 arranged along the axial direction of the conical feeding cylinder 8 is fixed on the conical feeding cylinder 8;
the spiral pushing device 7 comprises a connecting plate 10 fixed on the hollow shaft sleeve 6, a strip-shaped supporting plate 11 which is positioned at the upper right of the hollow shaft sleeve 6 and is parallel to the hollow shaft sleeve 6 is fixed on the connecting plate 10, an adjusting pull rod 12 which is parallel to the strip-shaped supporting plate is arranged around the strip-shaped supporting plate 11, a plurality of semi-arc-shaped pushing disks 13 which are obliquely arranged along the axial direction of the strip-shaped supporting plate 11 are arranged on the strip-shaped supporting plate 11, one end part of each semi-arc-shaped pushing disk 13 is hinged with the strip-shaped supporting plate 11, the other end part of each semi-arc-shaped pushing disk is hinged.
The threshing cylinder 4 comprises an annular front amplitude disc 15, an annular middle amplitude disc 16 and an annular rear amplitude disc 17 which are distributed in the front-back direction, a connecting cylinder 18 is fixed in the middle of the front side of the annular rear amplitude disc 17, a first spherical outside surface bearing 19 is arranged between the connecting cylinder 18 and the hollow shaft sleeve 6, a plurality of strip-shaped connecting plates 20 which are distributed radially by taking the centers of the annular front amplitude disc 15, the annular middle amplitude disc 16 and the annular rear amplitude disc 17 as axes are fixed among the annular front amplitude disc 15, the annular middle amplitude disc 16 and the annular rear amplitude disc 17, and a cylindrical steel wire screen 21 is fixed on the inner.
In the specific implementation process, the transmission shaft 5 is a seamless steel pipe with the diameter of 50mm and the thickness of 5mm, the hollow shaft sleeve 6 is a seamless steel pipe with the diameter of 80mm and the thickness of 5mm, and the rear end of the hollow shaft sleeve 6 is fixed on the box type frame 1 through a spline and a flange plate; the clearance between the scraper 14 and the inner wall of the top cover 2 is 3.5mm, the thickness of the rubber layer 22 is 2mm, and the seed thrown out at high speed is buffered to prevent the damage of the seed.
The cylindrical steel wire screen 21 is woven by steel wires with the diameter of 1.4mm to form a series of square holes with the diameter of 10mm multiplied by 10mm, the working external diameter of the threshing cylinder 4 is phi 710mm, and the working internal diameter is phi 608 mm; the strip-shaped supporting plate 11 is welded on the hollow shaft sleeve 6 through the connecting plate 10, the semi-arc-shaped pushing disc 13 is hinged with the strip-shaped supporting plate 11 and the adjusting pull rod 12 through a pin shaft, and the inclination angle of the semi-arc-shaped pushing disc 13 is adjusted within the range of 0-30 degrees.
Claims (3)
1. The utility model provides a centrifugal thresher is used to coarse cereals crop which characterized in that: the threshing machine comprises a box type rack (1), wherein a top cover (2) with an arc-shaped inner wall is arranged at the upper end of the box type rack (1), a feeding opening (3) is formed in the lower portion of the left side wall of the box type rack (1), a spiral feeding device and a threshing roller (4) which are distributed left and right and are mutually connected are arranged in the box type rack (1), a transmission shaft (5) which is connected with and coaxial with the spiral feeding device and the threshing roller (4) is arranged in the box type rack (1), a hollow shaft sleeve (6) fixed with the box type rack (1) is sleeved on the transmission shaft (5), and a spiral pushing device (7) is arranged on;
the spiral feeding device comprises a conical feeding cylinder (8) fixed on the transmission shaft (5), and a spiral blade (9) arranged along the axial direction of the conical feeding cylinder (8) is fixed on the conical feeding cylinder;
the spiral pushing device (7) comprises a connecting plate (10) fixed on the hollow shaft sleeve (6), a strip-shaped supporting plate (11) which is positioned at the upper right of the hollow shaft sleeve (6) and is parallel to the hollow shaft sleeve (6) is fixed on the connecting plate (10), an adjusting pull rod (12) which is parallel to the strip-shaped supporting plate is arranged around the strip-shaped supporting plate (11), a plurality of semi-arc-shaped pushing discs (13) which are obliquely arranged along the axial direction of the strip-shaped supporting plate are arranged on the strip-shaped supporting plate (11), one end part on each semi-arc-shaped pushing disc (13) is hinged with the strip-shaped supporting plate (11), the other end part is hinged with the adjusting pull rod (12), and scrapers (14) which are attached to the.
2. The centrifugal threshing device for coarse cereal crops as claimed in claim 1, wherein: the threshing cylinder (4) comprises an annular front amplitude disc (15), an annular middle amplitude disc (16) and an annular rear amplitude disc (17) which are distributed in the front and back direction, a connecting cylinder (18) is fixed in the middle of the front side of the annular rear amplitude disc (17), a first spherical outside surface bearing (19) is arranged between the connecting cylinder (18) and the hollow shaft sleeve (6), a plurality of strip-shaped connecting plates (20) which are radially distributed by taking the centers of the three as the axis are fixed among the annular front amplitude disc (15), the annular middle amplitude disc (16) and the annular rear amplitude disc (17), and a cylindrical steel wire screen (21) is fixed on the inner wall of each strip-shaped connecting plate (20).
3. The centrifugal threshing device for coarse cereal crops according to claim 1 or 2, characterized in that: rubber layers (22) are arranged on the inner walls of the box type frame (1) and the top cover (2), and a second external spherical bearing (23) is arranged between the front end part of the hollow shaft sleeve (6) and the transmission shaft (5); deep groove ball bearings (24) are arranged between the front end part and the rear end part of the transmission shaft (5) and the box type rack (1); a flange plate (25) positioned between the cone-shaped feeding cylinder (8) and the annular front breadth plate (15) is fixed on the transmission shaft (5), and the flange plate (25) is connected with the cone-shaped feeding cylinder (8) and the annular front breadth plate (15) through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911256729.4A CN110972725A (en) | 2019-12-08 | 2019-12-08 | Centrifugal thresher is used to coarse cereals crop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911256729.4A CN110972725A (en) | 2019-12-08 | 2019-12-08 | Centrifugal thresher is used to coarse cereals crop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110972725A true CN110972725A (en) | 2020-04-10 |
Family
ID=70091672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911256729.4A Pending CN110972725A (en) | 2019-12-08 | 2019-12-08 | Centrifugal thresher is used to coarse cereals crop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110972725A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112005731A (en) * | 2020-08-26 | 2020-12-01 | 山西农业大学 | Rod-toothed-rod combined eccentric threshing device |
| CN115250759A (en) * | 2022-09-02 | 2022-11-01 | 农业农村部南京农业机械化研究所 | Concave plate sieve blockage cleaning device of combine harvester, threshing roller assembly and threshing system |
-
2019
- 2019-12-08 CN CN201911256729.4A patent/CN110972725A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112005731A (en) * | 2020-08-26 | 2020-12-01 | 山西农业大学 | Rod-toothed-rod combined eccentric threshing device |
| CN115250759A (en) * | 2022-09-02 | 2022-11-01 | 农业农村部南京农业机械化研究所 | Concave plate sieve blockage cleaning device of combine harvester, threshing roller assembly and threshing system |
| CN115250759B (en) * | 2022-09-02 | 2024-01-19 | 农业农村部南京农业机械化研究所 | Concave plate screening and blocking removing device of combine harvester, threshing cylinder assembly and threshing system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110972725A (en) | Centrifugal thresher is used to coarse cereals crop | |
| CN108901375A (en) | Longitudinal axial flow nesting differential speed type corn threshing device | |
| CN110972724A (en) | Inner and outer cylinder rotation type thresher for coarse cereal crops | |
| CN210017778U (en) | Upright cone drum type peanut sheller | |
| CN107087475A (en) | A kind of differential flexible corn installed threshing separator | |
| CN211353162U (en) | Centrifugal thresher is used to coarse cereals crop | |
| CN113383650A (en) | Straw forage soil and dust removing and smashing and rubbing integrated machine | |
| CN110140530B (en) | Bionic threshing device of highland barley combine harvester with awn removing function | |
| CN110073821B (en) | Cutting-threshing combined type longitudinal axial flow threshing and separating device | |
| CN110741815A (en) | Formula high moisture content corn thresher is rubbed to axis of ordinates stream | |
| CN110278763B (en) | Multi-tangential flow soybean combine harvester | |
| CN210094003U (en) | Device for hulling and impurity removal of oil peony | |
| CN206575866U (en) | A kind of corn seed thresing machine | |
| CN112191519A (en) | A good granule screening installation for peanut grain | |
| CN211353161U (en) | Inner and outer cylinder rotation type thresher for coarse cereal crops | |
| CN112042399A (en) | Cylinder sieve cleaning system of cereal | |
| CN211020097U (en) | Formula high moisture content corn thresher is rubbed to axis of ordinates stream | |
| CN215122257U (en) | Threshing cylinder with turnable threshing knife teeth for threshing machine | |
| CN111822324A (en) | Seed-shell separator | |
| CN202979678U (en) | Cleaning and impurity removing device for maize harvesting machine | |
| CN114946418A (en) | Coarse cereals is with flexible ratch line pole combination formula thresher | |
| CN112237094B (en) | Sorghum ear header with large feeding amount and multiple reel discs and sorghum harvester | |
| CN210137629U (en) | Novel corn thresher | |
| CN101411271B (en) | Grinding-rubbing type millet threshing mechanism | |
| CN201094202Y (en) | Mini-size maize thresher |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |