CN113475218A - Cleaning device of single longitudinal axial flow combine harvester - Google Patents

Cleaning device of single longitudinal axial flow combine harvester Download PDF

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Publication number
CN113475218A
CN113475218A CN202110634108.6A CN202110634108A CN113475218A CN 113475218 A CN113475218 A CN 113475218A CN 202110634108 A CN202110634108 A CN 202110634108A CN 113475218 A CN113475218 A CN 113475218A
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China
Prior art keywords
sieve
air duct
plate
guide plate
fan
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Granted
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CN202110634108.6A
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Chinese (zh)
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CN113475218B (en
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不公告发明人
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Suzhou Xiquan Software Technology Co ltd
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Individual
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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01DHARVESTING; MOWING
    • A01D41/00Combines, i.e. harvesters or mowers combined with threshing devices
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01DHARVESTING; MOWING
    • A01D41/00Combines, i.e. harvesters or mowers combined with threshing devices
    • A01D41/12Details of combines
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01FPROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
    • A01F12/00Parts or details of threshing apparatus
    • A01F12/18Threshing devices
    • A01F12/22Threshing cylinders with teeth
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01FPROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
    • A01F12/00Parts or details of threshing apparatus
    • A01F12/44Grain cleaners; Grain separators
    • A01F12/446Sieving means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/001Drying-air generating units, e.g. movable, independent of drying enclosure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/004Nozzle assemblies; Air knives; Air distributors; Blow boxes

Abstract

The invention relates to the technical field of agricultural machinery, in particular to a cleaning device of a single-longitudinal axial flow combine harvester, which comprises a separation roller, a concave plate sieve, a vibrating sieve, a fan, a grain screw and a residue screw; the output end of the fan is provided with two air channels, one air channel is used for sweeping an upper air channel between the concave plate sieve and the vibrating sieve, the other air channel is used for sweeping a lower air channel between the vibrating sieve and the seed auger, the air channels are provided with the electric heating devices, blown air can be heated, grains and stalks on the concave plate sieve can be dried by utilizing hot air in the upper air channel, the toughness and the strength of the stalks are reduced, and the blockage situation is reduced or avoided.

Description

Cleaning device of single longitudinal axial flow combine harvester
Technical Field
The invention relates to the technical field of agricultural machinery, in particular to a cleaning device of a single longitudinal axial flow combine harvester.
Background
In recent years, a single longitudinal axial flow combine harvester adopts a longitudinal axial flow threshing mode, a threshing cylinder is relatively long, the rotating speed is relatively low, the threshing effect is relatively ideal, and the grain breakage rate is relatively low, so that the combine harvester is more and more favored by the market. At present, the cleaning device of the single longitudinal axial flow combine harvester mostly adopts an air screen type cleaning device which mainly comprises a fan, a shaking plate for conveying the removed mixture, a cleaning screen, a transmission mechanism and the like.
When the combine harvester works ideally, the shaking plate and the cleaning sieve do reciprocating motion, the removed mixture is continuously conveyed to the sieve surface by the shaking plate, the removed mixture is blown away under the action of a fan arranged at the front lower part of the cleaning sieve, light mixtures such as glumes, short stalks and the like are taken out of the combine harvester under the action of air flow, the slightly heavy mixtures such as long stalks, residual ears and the like gradually move to the rear part of the sieve surface under the vibration of the sieve, grains leak from the sieve pores in the moving process, the stalks are discharged from the sieve, and the residual ears fall into a trash auger for re-removal.
The invention with application number CN201610023439.5 discloses a cleaning device of a single longitudinal axial flow combine harvester, which eliminates vortex generated below an original straight shaking plate, so that the air velocity at the front parts of a fish scale screen and a first weaving screen is increased, the requirement that the air velocity at the front section is higher when the single longitudinal axial flow combine harvester cleans is met, most of materials fall from the front section to be screened under an ideal state, but when the materials are wet, the toughness of fibers such as stalks and the like is increased, the adhesion is good, the weight is also higher, so that the conditions of material blockage and difficult separation are easy to occur at the front section, grains fall at a position close to the back, when the grains fall at the position close to the back, the wind power is reduced, the winnowing cannot play a good role, and the cleanliness of the grains can be reduced.
Disclosure of Invention
The invention aims to provide a cleaning device of a single longitudinal axial flow combine harvester, which solves the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: a cleaning device of a single-longitudinal axial flow combine harvester comprises a separation roller, a concave plate sieve, a vibrating sieve, a fan, a grain screw and a tailing screw, wherein the separation roller has an included angle of 5-10 degrees with the horizontal direction, the separation roller comprises a roller shaft, a roller cone, a threshing toothed bar and threshing teeth, the concave plate sieve is positioned below the threshing toothed bar and the threshing teeth, the vibrating sieve is positioned below the concave plate sieve, the grain screw is positioned in the middle of the lower part of the vibrating sieve, the tailing screw is positioned at the tail part of the lower part of the vibrating sieve, the fan is arranged at the front end of the vibrating sieve, a fan chamber is arranged outside the fan, an upper air duct guide plate and a lower air duct guide plate are arranged on the fan chamber, a guide plate is arranged at the edge of the lower air duct guide plate, and a lower air duct blowing air towards the space between the vibrating sieve and the screw is formed on the inner side of the upper air duct guide plate, an upper air duct blowing air between the concave plate sieve and the vibrating sieve is formed in the lower air duct guide plate, and electric heating devices are arranged in the lower air duct and the upper air duct.
Preferably, the air outlet end of the upper air duct is provided with a swinging air guide device which is linked with the fan through a clutch device, so that air blown out of the upper air duct flows towards the bottom of the concave screen, or between the concave screen and the vibrating screen, or the upper part of the vibrating screen.
Preferably, the electric heating device comprises two fixing plates and a plurality of electric heating wires connected between the two fixing plates, and the length direction of the electric heating wires is parallel to the wind movement direction in the lower air duct or the upper air duct.
Preferably, the concave screen includes the arc sieve board and fixes the mounting panel on edge on the arc sieve board, the concave screen divide into connecting portion, side screening portion and end screening portion along its width direction, end screening portion is located the intermediate position department of arc sieve board, side screening portion is located the both sides of arc sieve board.
Preferably, the arc-shaped sieve plate is divided into a front section sieving area and a middle and rear section sieving area along the length direction of the arc-shaped sieve plate, the front section sieving area is provided with grid thinning sieve plates and grid cutting sieve plates which are distributed at intervals, and the middle and rear section sieving area is provided with a plurality of grid dense sieve plates which are distributed in parallel.
Preferably, the grid-thinning sieve plate and the cutting sieve plate are arranged in the width direction of the arc-shaped sieve plate, the cutting sieve plate comprises a grid sieve plate and a prismatic sieve plate, the grid sieve plate corresponds to the bottom sieving part in position, the prismatic sieve plate corresponds to the side sieving part in position, and the prismatic groove area on the prismatic sieve plate is 1.5-2 times that of the square groove on the grid sieve plate.
Preferably, the included angle of the edge angle of the prismatic groove on the prismatic sieve plate in the width direction of the arc-shaped sieve plate is 60-80 degrees.
Preferably, the swing type air guide device comprises an air deflector, a rotating shaft, a swing rod and a connecting rod, the air deflector is hinged to the inner wall of the lower air duct guide plate through the rotating shaft, one end of the swing rod is fixed to the rotating shaft, the swing rod is parallel to the air deflector, the first end of the connecting rod is hinged to the other end of the swing rod, and the second end of the connecting rod is hinged to a crank in transmission connection with the clutch device.
Preferably, the front end of the lower air duct guide plate is provided with a duckbill widening part, and the front end of the air guide plate is provided with extending parts extending towards two sides.
Preferably, clutch includes clutch plate, gear, slide shaft, control end and spring, the gear with the fan transmission is connected, the slide shaft with clutch plate fixed connection, just the slide shaft runs through the gear and with gear circumference fixed connection, the clutch plate with be equipped with between the gear the spring, the slide shaft is kept away from the one end of clutch plate is equipped with the control end.
Compared with the prior art, the invention has the beneficial effects that:
the output end of the fan is provided with two air channels, one air channel is used for sweeping an upper air channel between the concave plate sieve and the vibrating sieve, the other air channel is used for sweeping a lower air channel between the vibrating sieve and the seed auger, the air channels are provided with the electric heating devices, blown air can be heated, grains and stalks on the concave plate sieve can be dried by utilizing hot air in the upper air channel, the toughness and the strength of the stalks are reduced, and the blockage situation is reduced or avoided.
Drawings
FIG. 1 is a schematic view showing a flat blowing state of an upper air duct in a cleaning device of a single longitudinal axial flow combine harvester according to the invention;
FIG. 2 is a schematic view showing an upward blowing state of an upper air duct of the cleaning device of the single longitudinal axial flow combine harvester according to the invention;
FIG. 3 is a schematic view showing a state that an upper air duct blows downwards in a cleaning device of the single longitudinal axial flow combine harvester according to the invention;
FIG. 4 is a side view of a concave sieve in the cleaning device of the single longitudinal axial flow combine harvester of the invention;
FIG. 5 is a schematic structural diagram of a concave plate screen in a cleaning device of the single longitudinal axial flow combine harvester in the unfolded state;
FIG. 6 is a schematic structural diagram of a swinging type air guiding device in the cleaning device of the single longitudinal axial flow combine harvester.
Reference numbers in the figures: 1. a disengagement drum; 11. a drum shaft; 12. a roller cone; 13. a threshing toothed bar; 14. threshing teeth; 2. a concave plate sieve; 201. a connecting portion; 202. side screening; 203. bottom screening; 21. mounting a plate; 22. an arc-shaped sieve plate; 221. a front section screening area; 222. the middle and rear sections are screened; 23. grid-sparse sieve plate; 24. cutting off the sieve plate; 241. a grid sieve plate; 242. a prismatic sieve plate; 25. dense grid sieve plates; 3. vibrating screen; 4. a fan; 401. a lower air duct; 402. an upper air duct; 41. a fan chamber; 411. an upper duct baffle; 412. a lower duct baffle; 413. a duckbill widening; 42. a crank; 43. an electric heating device; 44. a guide plate; 5. a seed auger; 6. a tailing auger; 7. a swinging air guide device; 71. an air deflector; 711. an extension portion; 72. a rotating shaft; 73. a swing rod; 74. a connecting rod; 81. a clutch plate; 82. a gear; 83. a slide shaft; 84. a control end; 85. a spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b): as shown in figures 1-6, a cleaning device of a single longitudinal axial flow combine harvester comprises a separation roller 1, a concave sieve 2, a vibrating sieve 3, a fan 4, a grain auger 5 and a tailing auger 6, wherein the separation roller 1 has an included angle of 5-10 degrees with the horizontal direction, the separation roller 1 comprises a roller shaft 11, a roller cone 12, a threshing toothed bar 13 and threshing teeth 14, the roller shaft 11 is arranged on a driving device, the threshing toothed bar 13 is arranged on the edge of one side end face of the roller cone 12, the threshing teeth 14 are arranged on the threshing toothed bar 13, the concave sieve 2 is arranged below the threshing toothed bar 13 and the threshing teeth 14, the vibrating sieve 3 is arranged below the concave sieve 2 and mainly used for further screening materials falling from the concave sieve 2, the auger 5 is arranged in the middle part below the vibrating sieve 3, screened and selected materials enter a grain bin from the auger 5, and the tailing auger 6 is arranged at the tail part below the vibrating sieve 3, the swept impurity materials are collected backwards to an impurity auger 6 to be discharged, a fan 4 is installed at the front end of a vibrating screen 3, a fan chamber 41 is arranged outside the fan 4, an upper air duct guide plate 411 and a lower air duct guide plate 412 are arranged on the fan chamber 41, a guide plate 44 is arranged on the edge of the lower air duct guide plate 412, the guide plate 44 mainly guides the wind in the lower air duct guide plate 412 upwards to increase the contact time with the materials, the vibrating screen 3 can also be subjected to certain heating treatment, a lower air duct 401 which blows towards the space between the vibrating screen 3 and a kernel auger 5 is formed on the inner side of the upper air duct guide plate 411, an upper air duct 402 which blows towards the space between a concave plate screen 2 and the vibrating screen 3 is formed in the lower air duct guide plate 412, electric heating devices 43 are arranged in the lower air duct 401 and the upper air duct 402, the grains and the stalks on the concave plate screen 2 can be dried by utilizing the hot wind in the upper air duct 402, and the toughness and the strength of the stalks are reduced, reduce or avoid the putty condition, simultaneously, for the stem stalk, the parcel nature of the moisture of grain itself is good, therefore the stem stalk can comparatively quick desiccation and alleviate the quality, is favorable to being rejected in the selection by winnowing to improve and clean the effect, on the other hand is favorable to the storage of cereal to the stoving on grain surface.
Specifically, the air outlet end of the upper air duct 402 is provided with a swing type air guide device 7 linked with the fan 4 through a clutch device, so that the air blown out from the upper air duct 402 flows towards the bottom of the concave screen 2, or between the concave screen 2 and the vibrating screen 3, or the upper part of the vibrating screen 3, the clutch device is connected with a cab control device, a driver can conveniently control the swing state of the swing type air guide device 7, the swing type air guide device 7 can control the hot air direction discharged from the upper air duct 402, further, an elastic shifting sheet is arranged on a rotating shaft 72 of the air guide plate 71, a switch is respectively arranged at the positions close to the upper limit position and the lower limit position of the shifting sheet, when the air guide plate 71 rotates to be close to the upper limit position and the lower limit position, the shifting sheet triggers the switch and generates elastic deformation at the limit position, the switch is continuously pressed (the time length of the high-power circuit is increased), the high-power circuit of the electric heating device 43 is switched on, the power of the electric heating device is increased, when the lower part of the front end of the concave plate sieve 2 is swept (namely the upper limit position of the air deflector 71, a high-power circuit is connected at the moment), the space between the air deflector 71 and the upper air duct 402 towards the air outlet direction is gradually reduced, heat can be concentrated, the air speed can be increased, the material at the front end of the concave plate sieve 2 can be quickly dried, the stalks are dehydrated, the toughness and the strength of the stalks are reduced, the blockage situation is reduced or avoided, meanwhile, compared with the stalks, the wrapping property of the moisture of grains is good, so the stalks can be rapidly dehydrated to reduce the quality, the stalks can be favorably removed in winnowing, the cleaning effect is improved, when the space between the concave plate sieve 2 and the vibrating sieve 3 is swept (at the moment, the low-power circuit is connected), the air deflector 71 equally divides the space of the upper air channel 402, air can be uniformly blown out of the upper air channel 402, a lot of heat is not needed, the stalks with lighter weight after water loss are blown backwards, the effect of removing impurities is achieved, when the upper end face of the vibrating screen 3 is blown (namely the lower limit position of the air deflector 71), the space between the air deflector 71 and the upper air channel 402 towards the air outlet direction is reduced, even if the heat is concentrated, the air speed is increased, the fallen and accumulated stalks and the like can be blown, the stalks with larger volume are further dehydrated, and the stalks are blown up after being blown up simultaneously, so that the cleaning effect is improved.
Specifically, the electric heating device 43 includes two fixing plates and a plurality of heating wires connected between the two fixing plates, the length direction of the heating wires is parallel to the direction of wind movement in the lower air duct 401 or the upper air duct 402, the heating wires designed in this way can increase the contact time with the wind, the heating wires with smaller power can enable the wind to reach the temperature of 40-60 ℃, the temperature of 40 ℃ in low power and the temperature of 60 ℃ in high power.
Specifically, concave sieve 2 includes curved sieve plate 22 and fixes the mounting panel 21 on curved sieve plate 22 upper limb, curved sieve plate 22 passes through mounting panel 21 to be installed in the frame, concave sieve 2 is divided into connecting portion 201, side screening portion 202 and end screening portion 203 along its width direction, connecting portion 201 is the part of mounting panel 21, end screening portion 203 is located curved sieve plate 22's intermediate position department, side screening portion 202 is located curved sieve plate 22's both sides, when the material enters into curved sieve plate 22, most of granular, the material that the quality is big is concentrated at end screening portion 203, and bar or rod type isovolumic big, the material that frictional force is big can distribute at side screening portion 202, so be favorable to carrying out the targeted screening to the material.
Specifically, arc sieve 22 is divided into anterior segment screening district 221 and middle and back section screening district 222 along its length direction, be equipped with interval distribution's sparse grid sieve 23 and cut off sieve 24 on the anterior segment screening district 221, be equipped with the dense grid sieve 25 of a plurality of parallel distribution on the middle and back section screening district 222, because anterior segment screening district 221 department accumulational material is many, and pile up the material easily, consequently, sparse grid sieve 23 and cut off sieve 24 have been designed, be used for cutting off and discharging the heap material, and middle and back section screening district 222 is comparatively speaking the material comparatively more evenly, mostly be cereal and the granule is miscellaneous.
Specifically, the grid-sparse sieve plate 23 and the cut-off sieve plate 24 are arranged along the width direction of the arc-shaped sieve plate 22, the cut-off sieve plate 24 comprises a grid sieve plate 241 and a prismatic sieve plate 242, the grid sieve plate 241 corresponds to the bottom sieving part 203, the prismatic sieve plate 242 corresponds to the side sieving part 202, the prismatic groove area on the prismatic sieve plate 242 is 1.5-2 times of the square groove area on the grid sieve plate 241, most of granular and high-mass materials are concentrated at the bottom sieving part 203 and fed by using the grid sieve plate 241, and the strip-shaped or rod-shaped materials with large volume and large friction force are distributed on the side sieving part 202, and the material is easy to enter by using the prismatic grooves on the prismatic sieve plate 242, and fibers are cut off according to the characteristics of the edges and corners.
Specifically, the included angle of the edge angle of the prismatic groove on the prismatic sieve plate 242 in the width direction of the arc sieve plate 22 is 60-80 °, so that the symmetry line of the acute edge angle is parallel to the moving direction of the threshing teeth 14, that is, the material is extruded by the threshing teeth 14 and enters the prismatic groove and is divided by the edge angle, the chopping effect is realized, and the purpose of preventing material blockage can be achieved even if the humidity of the fiber is high.
Specifically, the swing type air guide device 7 comprises an air guide plate 71, a rotating shaft 72, a swing rod 73 and a connecting rod 74, the air guide plate 71 is hinged to the inner wall of the lower air duct guide plate 412 through the rotating shaft 72, one end of the swing rod 73 is fixed on the rotating shaft 72, the swing rod 73 is parallel to the air guide plate 71, the first end of the connecting rod 74 is hinged to the other end of the swing rod 73, the second end of the connecting rod 74 is hinged to a crank 42 in transmission connection with the clutch device, when the crank 42 rotates, the connecting rod 74 and the swing rod 73 can be driven to swing in a reciprocating mode, namely, the air guide plate 71 swings at an outlet of the inner wall of the lower air duct guide plate 412, and the air is blown downwards or flatly in the wind direction.
Specifically, the duckbill widened portion 413 is arranged at the front end of the lower air duct guiding plate 412, and the extending portions 711 extending towards two sides are arranged at the front end of the air guiding plate 71, so that the coverage range of wind in width can be enlarged.
Specifically, the clutch device includes a clutch plate 81, a gear 82, a sliding shaft 83, a control end 84 and a spring 85, the gear 82 is in transmission connection with the fan 4, the sliding shaft 83 is fixedly connected with the clutch plate 81, the sliding shaft 83 penetrates through the gear 82 and is circumferentially and fixedly connected with the gear 82, the spring 85 is arranged between the clutch plate 81 and the gear 82, the control end 84 is arranged at one end of the sliding shaft 83, which is far away from the clutch plate 81, the control end 84 utilizes a steel wire for transmission through a pedal or a handle and the like, the gear 82 is meshed with the gear on the rotating shaft of the fan 4, when the fan 4 rotates, the gear 82 rotates along with the clutch plate 81, the clutch plate 81 also rotates continuously, in a natural state, the clutch plate 81 is attached to the crank 42 to realize linkage, when the control end 84 drives the sliding shaft 83 to slide to the left side (as shown in fig. 6), the clutch plate 81 is separated from the crank 42, and at this time, the crank 42 loses power.
The working principle is as follows: the materials are fed into the space between the threshing toothed bar 13, the threshing teeth 14 and the concave sieve 2 from the roller cone 12, the threshing teeth 14 beat and scatter the materials on the concave sieve 2, most of the granular and high-quality materials are centralized at the bottom sieving part 203 and are fed by using the grid sieve plate 241, the materials with large size and large friction force in a strip shape or a rod shape are distributed at the side sieving part 202, the materials are easy to enter by using the edge-shaped groove on the edge-shaped sieve plate 242 and are cut off according to the characteristics of the edge angle, the clutch device is connected with the cab control device, a driver can conveniently control the swinging state of the swinging air guide device 7, the swinging air guide device 7 can control the direction of hot air discharged from the upper air duct 402, when the lower part of the front end of the concave sieve 2 is swept, the materials at the front end of the concave sieve 2 can be dried, the stalks are dehydrated, the toughness and the strength of the stems are reduced, the condition of material blockage is reduced or avoided, meanwhile, compared with the stems, the wrapping property of the moisture of grains is good, the stems can be quickly dehydrated to reduce the weight, the stems can be favorably removed in winnowing, the cleaning effect is improved, when the space between the concave screen 2 and the vibrating screen 3 is swept, the lighter materials can be swept to the rear, the impurity removing effect is achieved, when the upper end surface of the vibrating screen 3 is swept, the fallen and accumulated stems and the like can be swept to float up and easily move to the rear, the cleaning effect is improved, the vibrating screen 3 is positioned below the concave screen 2 and mainly used for further screening the materials falling from the concave screen 2, the seed grain auger 5 is positioned in the middle part below the vibrating screen 3, the screened selected materials enter a grain bin from the auger 5, the miscellaneous residue auger 6 is positioned at the tail part below the vibrating screen 3, the purged impurity materials are collected backwards to the impurity auger 6 to be discharged.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (1)

1. A cleaning device of a single longitudinal axial flow combine harvester is characterized in that: comprises a separation roller (1), a concave plate sieve (2), a vibrating sieve (3), a fan (4), a grain auger (5) and a sundry auger (6), wherein the separation roller (1) has an included angle of 5-10 degrees with the horizontal direction, the separation roller (1) comprises a roller shaft (11), a roller cone body (12), a threshing toothed bar (13) and threshing teeth (14), the concave plate sieve (2) is positioned below the threshing toothed bar (13) and the threshing teeth (14), the vibrating sieve (3) is positioned below the concave plate sieve (2), the auger (5) is positioned in the middle of the lower part of the vibrating sieve (3), the sundry auger (6) is positioned at the tail part of the lower part of the vibrating sieve (3), the fan (4) is installed at the front end of the vibrating sieve (3), and a fan chamber (41) is arranged outside the fan (4), an upper air duct guide plate (411) and a lower air duct guide plate (412) are arranged on the fan chamber (41), a guide plate (44) is arranged at the edge of the lower air duct guide plate (412), a lower air duct (401) blowing air between the vibrating screen (3) and the grain auger (5) is formed on the inner side of the upper air duct guide plate (411), an upper air duct (402) blowing air between the concave plate screen (2) and the vibrating screen (3) is formed in the lower air duct guide plate (412), and electric heating devices (43) are arranged in the lower air duct (401) and the upper air duct (402);
the air outlet end of the upper air duct (402) is provided with a swinging type air guide device (7) which is linked with the fan (4) through a clutch device, so that air blown out of the upper air duct (402) flows towards the bottom of the concave screen (2), or between the concave screen (2) and the vibrating screen (3), or the upper part of the vibrating screen (3);
the swing type air guide device (7) comprises an air guide plate (71), a rotating shaft (72), a swing rod (73) and a connecting rod (74), the air guide plate (71) is hinged to the inner wall of the lower air duct guide plate (412) through the rotating shaft (72), one end of the swing rod (73) is fixed to the rotating shaft (72), the swing rod (73) is parallel to the air guide plate (71), the first end of the connecting rod (74) is hinged to the other end of the swing rod (73), and the second end of the connecting rod (74) is hinged to a crank (42) in transmission connection with the clutch device;
clutch includes clutch plate (81), gear (82), slide shaft (83), control end (84) and spring (85), gear (82) with fan (4) transmission is connected, slide shaft (83) with clutch plate (81) fixed connection, just slide shaft (83) run through gear (82) and with gear (82) circumference fixed connection, clutch plate (81) with be equipped with between gear (82) spring (85), slide shaft (83) are kept away from the one end of clutch plate (81) is equipped with control end (84).
CN202110634108.6A 2020-06-03 2020-06-03 Cleaning device of single longitudinal axial flow combine harvester Active CN113475218B (en)

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CN202110634108.6A CN113475218B (en) 2020-06-03 2020-06-03 Cleaning device of single longitudinal axial flow combine harvester
CN202010493042.9A CN111543172B (en) 2020-06-03 2020-06-03 Cleaning device of single-longitudinal axial flow combine harvester

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CN113475218B CN113475218B (en) 2022-11-11

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