CN109261516B - Combined fan type oat cleaner - Google Patents

Combined fan type oat cleaner Download PDF

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Publication number
CN109261516B
CN109261516B CN201811245511.4A CN201811245511A CN109261516B CN 109261516 B CN109261516 B CN 109261516B CN 201811245511 A CN201811245511 A CN 201811245511A CN 109261516 B CN109261516 B CN 109261516B
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China
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fan
cylindrical
oat
cleaning
assembly
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CN201811245511.4A
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CN109261516A (en
Inventor
李心平
张家亮
姬江涛
赵高源
乔春华
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Henan University of Science and Technology
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Henan University of Science and Technology
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING 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
    • B07B4/00Separating solids from solids by subjecting their mixture to gas currents
    • B07B4/08Separating solids from solids by subjecting their mixture to gas currents while the mixtures are supported by sieves, screens, or like mechanical elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING 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
    • B07B11/00Arrangement of accessories in apparatus for separating solids from solids using gas currents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING 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
    • B07B11/00Arrangement of accessories in apparatus for separating solids from solids using gas currents
    • B07B11/02Arrangement of air or material conditioning accessories

Abstract

A combined fan type oat cleaner comprises a frame, a feeding hopper, a screening assembly, a cleaning fan assembly, a seed conveying assembly and a power assembly, wherein the screening assembly comprises a plurality of horizontal cylindrical sieves which are arranged in parallel, a plurality of sieve pores are uniformly formed in the side wall of each cylindrical sieve, the side wall of each cylindrical sieve is wavy along the direction parallel to the axial direction of the cylindrical sieve and formed by a plurality of sections of broken lines, and the wavy fluctuation concave-convex directions of the corresponding positions of the side walls of every two adjacent cylindrical sieves are just opposite; the cleaning fan consists of a parallel centrifugal fan and an axial flow fan and is respectively used for separating out larger impurities and smaller impurities. According to the oat cleaning and sorting machine with the combined double fans and the three cylindrical sieves, the oat grains and impurities in the oat raw material are quickly and effectively screened and separated in a wind-sieve assembly mode through the change of the structures of the cylindrical sieves and the interaction of the matching modes of different fans, so that the production cost is reduced, and the cleaning and sorting quality of the oat is improved.

Description

Combined fan type oat cleaner
Technical Field
The invention relates to the technical field of cleaning mechanical equipment for oat threshed products in crops, in particular to a combined double-fan type three-cylinder screen oat cleaning machine.
Background
With the improvement of agricultural production level in China, the development of mechanized harvesting of crops is faster and faster. In recent years, the demand of oat on the grain market is continuously increased, but the oat cleaning device matched with the oat is immature on the market. The cleaning operation of oat threshed products is an important link in the oat harvesting process. The traditional oat cleaning operation mainly depends on manpower, and the cleaning is relatively clean, but the labor intensity is high and the efficiency is low.
Most of the cleaning mechanisms in the current market are vibrating screen mechanisms consisting of a vibrating plate, an upper screen, a lower screen and the like. Although the cleaning effect of the vibrating screen is better, the mechanism has the defects of large volume, complex structure, large vibration amplitude, high processing cost and the like.
Therefore, the problems that the size of the oat cleaning mechanism is reduced, the production cost is reduced, and the cleaning device with low cost, simple structure and good cleaning effect is designed by improving the key structure of the cleaning machine aiming at the biological characteristics of the oats are solved at present.
Disclosure of Invention
The technical purpose of the invention is as follows: the utility model provides a modular double fan is equipped with oat cleaner of three drum sieves, through the change of a plurality of drum sieve structures to and the cooperation formula interact of different fans, realize that oat seed grain and impurity's wind sieve matched stack formula is quick, effectively screening separation in the oat raw materials, thereby reduced manufacturing cost, improved the quality of cleaning of oat.
In order to achieve the technical purpose, the invention adopts the technical scheme that: a combined fan type oat cleaner comprises a rack, a feeding hopper, a screening assembly, a cleaning fan assembly, a grain conveying assembly and a power assembly, wherein the feeding hopper, the screening assembly, the cleaning fan assembly, the grain conveying assembly and the power assembly are arranged on the rack, the rack is of a rectangular frame structure, a partition plate is vertically arranged in the rack and parallel to the width edge of the rectangular frame structure rack so as to divide the interior of the rack into two cavity spaces of a fan chamber and a cleaning chamber, the feeding hopper is arranged on the corresponding rack above the cleaning chamber and can feed into the cleaning chamber, the screening assembly is arranged in the cleaning chamber and comprises a plurality of cylinder sieves which are horizontal and parallel to each other, the cylinder sieves are arranged along the length edge direction parallel to the rectangular frame structure rack, and the cylinder diameters of the cylinder sieves sequentially decrease in the arrangement direction close to the fan chamber and far away from the fan chamber, the device comprises a feeding hopper, a cylindrical sieve, a plurality of sieve holes, a plurality of broken lines, a plurality of corrugated concave-convex directions and a plurality of corrugated convex-concave directions, wherein the cylindrical sieve with the largest cylinder diameter is arranged right below the feeding hopper and used for receiving and first-stage screening oat raw materials conveyed by the feeding hopper;
the cleaning fan component comprises a centrifugal fan and an axial flow fan, wherein the centrifugal fan is arranged in a fan chamber of the frame, an air outlet of the centrifugal fan supplies air into the cleaning chamber through a through hole arranged on a partition plate, the centrifugal fan is used for carrying out winnowing separation between oat grains and impurities on materials screened by a sieve hole of the cylindrical sieve, the axial flow fan is arranged above the frame, a rectangular air outlet pipe is horizontally arranged between the axial flow fan and the frame, the rectangular air outlet pipe is arranged right above the cleaning chamber, one end, close to the fan chamber, of the rectangular air outlet pipe is in butt joint communication with an air outlet pipeline of the axial flow fan, one end, far away from the fan chamber, of the rectangular air outlet pipe is communicated with external atmosphere, a bottom plate of the rectangular air outlet pipe is in a corrugated shape which fluctuates up and down, a round hole is arranged at each upward bulge in a corrugated structure of the bottom plate, and a local low pressure can be formed when air blown out by the axial flow fan flows through the rectangular air outlet pipe, adsorbing light impurities in the cleaning room into the rectangular air outlet pipe, and discharging the light impurities out of the cleaning machine along with airflow in the rectangular air outlet pipe;
the grain conveying assembly comprises a V-shaped collecting plate arranged below the screening assembly and a spiral conveyor arranged in a concave groove of the V-shaped collecting plate, one side of the V-shaped collecting plate is butted with the lower end face of a through hole formed in the partition plate, and the other side of the V-shaped collecting plate is connected with the rack; the power assembly is respectively connected with the screening assembly, the cleaning fan assembly and the grain conveying assembly and used for providing power for the movement of the power assembly.
Preferably, the feeding hopper is of a funnel-shaped structure with an opening at the lower end, and an included angle between the side wall of the feeding hopper and the horizontal plane is 45 degrees.
Preferably, the height of the central axis of the air outlet of the centrifugal fan is lower than that of the central axis of the cylindrical sieve with the largest diameter.
Preferably, the cleaning and sorting machine further comprises a control mechanism arranged on the frame, the control mechanism is electrically connected with the power assembly, the screening assembly, the cleaning fan assembly and the grain conveying assembly and used for regulating and controlling the power assembly to drive the screening assembly, the cleaning fan assembly and the grain conveying assembly to respectively complete the screening, wind power cleaning and grain conveying operations of the oat raw materials.
Preferably, the auger in the grain conveying assembly is arranged along the width of the frame.
Preferably, the number of the cylindrical sieves is three, and the cylindrical sieves are divided into a large cylindrical sieve, a middle cylindrical sieve and a small cylindrical sieve according to the diameter, wherein the heights of the central axes of the large cylindrical sieve, the middle cylindrical sieve and the small cylindrical sieve are sequentially reduced, and the height difference of the central axes of the two adjacent cylindrical sieves in the vertical direction is 70 mm.
Preferably, the diameter of the cylinder of the large cylinder screen is 350mm, the diameter of the cylinder of the middle cylinder screen is 300mm, and the diameter of the cylinder of the small cylinder screen is 250 mm.
Preferably, the multi-section folding lines forming the side wall of the cylindrical screen are formed by alternately connecting a plurality of horizontal lines and a plurality of inclined lines, wherein the included angle between each inclined line and the horizontal plane is 10 degrees.
Preferably, the power assembly comprises two motors, the two motors respectively provide power for the centrifugal fan and the cylindrical screen with the largest diameter, power is transmitted among the cylindrical screens through a belt, and the centrifugal fan also transmits power for the spiral conveyor and the axial flow fan through the belt.
Preferably, the side wall of the cylindrical screen is a woven screen, and two ends of the cylindrical screen are fixedly connected with the rack through bearing seats.
The invention has the beneficial effects that:
1. according to the combined fan type oat cleaner, the cylindrical sieves which are sequentially arranged and have different diameters, the centrifugal fan and the axial flow fan which can be matched with each other are arranged, oat threshed products form a fluffy material layer in an airflow field of a cleaning chamber by utilizing the repeated centrifugal throwing action of the cylindrical sieves, and then multiple combined screens of oat grains and impurities are realized by the mutual matching of the multiple actions through the directional winnowing separation action of the centrifugal fan and the local low-pressure adsorption action generated by the axial flow fan, so that the cleaning quality of finished oat grains is effectively improved. The cleaning and sorting machine has the advantages of reasonable integral structure, ingenious design, compact and small size, high cleaning efficiency, good cleaning and sorting effect, low processing cost and safe and reliable use.
2. According to the combined fan type oat cleaner, the plurality of cylindrical sieves in the screening assembly are respectively provided with different diameters, the side walls of the plurality of cylindrical sieves are all in a wavy shape formed by a plurality of broken lines, and the arrangement mode can effectively increase the effective throwing area of the cylindrical sieves, so that the working efficiency of the cleaner and the screening effect of oats are improved. Meanwhile, in order to avoid the problems that after the side walls of the cylindrical screens are arranged into a wavy structure, the throwing speed of the convex parts of the wavy structure is high, the throwing speed of the concave parts of the wavy structure is low, and further oat threshed objects thrown out of the convex parts are thrown, and the oat threshed objects thrown out of the concave parts cannot reach the next-stage cylindrical screen, the side wall screen surfaces of the plurality of cylindrical screens are matched in a convex-concave-convex mode, so that materials at each part can smoothly enter the next-stage cylindrical screen for further centrifugal screening.
3. The invention relates to a combined fan type oat cleaner, wherein a cleaning fan component consists of a parallel centrifugal fan and an axial flow fan, wherein the parallel centrifugal fan can discharge larger impurities in oat threw-off products thrown out by a cylindrical screen out of the cleaner through an air outlet of a cleaning chamber, and the axial flow fan is matched with a rectangular air outlet pipe to adsorb the smaller impurities floating in the cleaning chamber into the rectangular air outlet pipe through a rectangular air outlet pipe bottom plate with a round hole so as to discharge the smaller impurities out of the cleaner through the rectangular air outlet pipe along with air flow. The light and heavy sundries in the oat material can be better separated through the cooperation of the double fans, so that the oat cleaning effect is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic top view of a male-female arrangement of the screen assembly of the present invention;
FIG. 3 is a schematic structural view of the undulating side wall of the cylindrical screen of the present invention;
FIG. 4 is a schematic top view of an axial flow fan according to the present invention;
FIG. 5 is a schematic front view of a rectangular outlet duct base plate according to the present invention;
FIG. 6 is a schematic top view of the structure of the rectangular outlet duct bottom plate according to the present invention;
reference numerals: 1. the device comprises a frame, 2, a feeding hopper, 3, a partition plate, 4, a fan chamber, 5, a cleaning chamber, 6, a cylindrical sieve, 7, a centrifugal fan, 8, an axial flow fan, 801, an air outlet pipeline, 9, a rectangular air outlet pipe, 901, a bottom plate, 10, a round hole, 11, a V-shaped collecting plate, 12 and a spiral conveyor.
Detailed Description
The technical scheme of the invention is further explained in detail by combining the attached drawings:
as shown in the figure, a combination fan formula oat cleaning mill, including frame 1 and feeding funnel 2, screening subassembly, cleaning fan subassembly, seed grain conveying components and the power pack of setting in frame 1, frame 1 be rectangular bodily form frame column structure, at the vertical baffle 3 that is provided with in frame 1's inside, this baffle 3 is on a parallel with rectangular bodily form frame column 1's width limit setting to with the internal partitioning of frame 1 become two cavity spaces of fan room 4 and cleaning room 5, feeding funnel 2 set up in frame 1 that 5 tops of cleaning room correspond, and can be to feeding in the cleaning room 5, the screening subassembly set up in cleaning room 5, the screening subassembly include the level, and a plurality of drum sieves 6 of parallel arrangement each other, a plurality of drum sieves 6 are arranged along the length limit direction that is on a parallel with rectangular bodily form frame column structure frame 1, and a plurality of drum sieves 6 drum diameters diminish in proper order on the direction of arrangement of being close to fan room 4 to keeping away from fan room 4 in proper order The device comprises a feeding hopper 2, a cylindrical sieve 6 with the largest cylinder diameter, a plurality of sieve holes, a plurality of corrugated broken lines and a plurality of corrugated concave-convex directions, wherein the cylindrical sieve 6 with the largest cylinder diameter is arranged right below the feeding hopper 2 and is used for receiving and first-stage screening oat raw materials conveyed by the feeding hopper 2, the side wall of each cylindrical sieve 6 is uniformly provided with a plurality of sieve holes, the side wall of each cylindrical sieve 6 is in a wavy shape formed by a plurality of sections of broken lines along the direction parallel to the axial direction of the cylindrical sieve, the wavy concave-convex directions at the corresponding positions of the side walls of every two adjacent cylindrical sieves 6 are just opposite, and the distance from each point on the side wall of each cylindrical sieve 6 to the side wall of the adjacent cylindrical sieve 6 is the same;
the cleaning fan component comprises a parallel centrifugal fan 7 and an axial flow fan 8, wherein the centrifugal fan 7 is arranged in a fan chamber 4 of the frame 1 and is adjacent to a cylindrical sieve 6 with the largest diameter, an air outlet of the centrifugal fan 7 supplies air to the cleaning chamber 5 through a through hole arranged on the partition plate 3 and is used for carrying out air separation between oat grains and impurities on materials screened out through the sieve holes of the cylindrical sieve 6, the axial flow fan 8 is arranged above the frame 1, a rectangular air outlet pipe 9 is horizontally arranged between the axial flow fan 8 and the frame 1, the rectangular air outlet pipe 9 is arranged right above the cleaning chamber 5, one end, close to the fan chamber 4, of the rectangular air outlet pipe 9 is in butt joint communication with an air outlet pipeline 801 of the axial flow fan 8, one end, far away from the fan chamber 4, of the rectangular air outlet pipe 9 is communicated with external atmosphere, a bottom plate 901 of the rectangular air outlet pipe 9 is in a corrugated shape which fluctuates up and down, each upward bulge in the corrugated structure of the bottom plate 901 is provided with a round hole 10, and the round hole 10 can form local low pressure when gas blown out by the axial flow fan 8 flows through the rectangular air outlet pipe 9, so that light impurities in the cleaning chamber 5 are adsorbed into the rectangular air outlet pipe 9 and are discharged out of the cleaning machine along with airflow in the rectangular air outlet pipe 9;
in the cleaning and sorting machine structure of the application, the air outlet pipeline 801 of the axial flow fan 8 and the rectangular air outlet pipe 9 form a low-pressure air outlet channel together, the low-pressure air outlet channel is integrally arranged above the cleaning and sorting chamber, the corrugated bottom plate 901 of the rectangular air outlet pipe 9 is separated from the cleaning and sorting chamber, the corrugated bottom plate 901 is provided with a round hole 10 at the highest position of the fluctuation bulge, so that light impurities floating in the cleaning and sorting chamber are adsorbed, the air blown out from the circular air outlet pipeline 801 by the axial flow fan 8 is converted into the rectangular air outlet pipe 9 through the air outlet pipeline 801 of the axial flow fan 8, and the air flows out from the end part of the rectangular air outlet pipe 9.
The grain conveying assembly comprises a V-shaped collecting plate 11 arranged below the screening assembly and a spiral conveyor 12 arranged in a concave groove of the V-shaped collecting plate 11, one side of the V-shaped collecting plate 11 is butted with the lower end face of a through hole formed in the partition plate 3, and the other side of the V-shaped collecting plate 11 is connected with the rack 1; through the setting of screening subassembly below V-arrangement collecting plate and auger delivery ware, can realize the better collection and the transport of the oat seed grain after cleaning, prevent to cause blocking phenomenon in cleaning plant to whole cleaning plant's work efficiency has been improved.
The power assembly is respectively connected with the screening assembly, the cleaning fan assembly and the grain conveying assembly and used for providing power for the movement of the power assembly.
Preferably, the feeding hopper 2 is of a funnel-shaped structure with an opening at the lower end, the feeding hopper 2 is formed by welding 1.8-2mm steel plates, the included angle between the side wall of the feeding hopper 2 and the horizontal plane is 45 degrees, and the feeding hopper 2 is fixedly connected with the rack.
Preferably, the height of the central axis of the air outlet of the centrifugal fan 7 is lower than that of the central axis of the cylindrical sieve 6 with the largest diameter.
Preferably, the cleaning and sorting machine further comprises a control mechanism arranged on the frame 1, the control mechanism is electrically connected with the power assembly, the screening assembly, the cleaning fan assembly and the grain conveying assembly and used for regulating and controlling the power assembly to drive the screening assembly, the cleaning fan assembly and the grain conveying assembly to respectively complete the screening, wind power cleaning and grain conveying operations of the oat raw materials.
Preferably, the auger 12 of the grain conveying assembly is arranged along the width of the frame 1. The maximum diameter of the auger 12 is 170mm and the pitch of the auger 12 is 80 mm. The device mainly comprises a transmission shaft and a helical blade, wherein the helical blade is welded on the shaft, and the whole device is arranged at the lower end of a rack and is fixedly connected with the rack through a bearing seat.
Preferably, the number of the cylindrical screens 6 is three, and the cylindrical screens are divided into a large cylindrical screen, a middle cylindrical screen and a small cylindrical screen according to the diameter, wherein the heights of the central axes of the large cylindrical screen, the middle cylindrical screen and the small cylindrical screen are sequentially reduced, and the height difference of the central axes of two adjacent cylindrical screens 6 in the vertical direction is 70 mm. The diameter of the cylinder of the large cylinder screen is 350mm, the diameter of the cylinder of the middle cylinder screen is 300mm, and the diameter of the cylinder of the small cylinder screen is 250 mm. The sieves matched with the large, medium and small cylindrical sieves are woven sieves, the surfaces of the sieves are wavy, and a plurality of sections of broken lines forming the side wall of the cylindrical sieve 6 are formed by alternately connecting a plurality of horizontal lines and a plurality of inclined lines, wherein the included angle between each inclined line and the horizontal plane is 10 degrees. Two ends of each cylindrical screen 6 are fixedly connected with the frame 1 through bearing seats;
preferably, the power assembly comprises two motors, the two motors respectively provide power for the centrifugal fan 7 and the cylindrical screen 6 with the largest diameter, the power is transmitted among the cylindrical screens 6 through a belt, and the centrifugal fan 7 also respectively transmits power for the screw conveyor 12 and the axial flow fan 8 through the belt.
The working principle of the cleaning and sorting machine prepared by the invention is as follows: during operation, oat threshed objects are sent into the cleaner through the feeding hopper, the oat threshed objects smoothly enter a large cylindrical sieve in the screening assembly, then a plurality of cylindrical sieves with the fluctuated and matched side walls throw the oat threshed objects to the upper part of the cleaning chamber through respective rotation, and the side walls are of a wavy cylindrical sieve structure consisting of a plurality of sections of broken lines, so that the throwing area of the cylindrical sieve is increased, and the working efficiency of the cleaner is greatly improved. Meanwhile, the oat cleaner adopts a combination form of a parallel centrifugal fan and an axial flow fan, the parallel centrifugal fan can clean larger impurities out of the oat cleaner along with air flow through the throwing action of a cylindrical sieve, the axial flow fan blows blown air to a rectangular air outlet pipe, a cleaning chamber is arranged below the rectangular air outlet pipe, a bottom plate of the rectangular air outlet pipe is corrugated, and a round hole is formed in the highest point of a corrugated structure. Because the air flow in the rectangular air outlet pipe is unchanged, the flow velocity at the highest point round hole opening of the bottom plate is the largest, the pressure at the highest point round hole opening is the smallest, and light impurities in oat threshed objects floating above the cleaning chamber can be adsorbed by utilizing the local low-pressure effect and are discharged out of the machine through the rectangular air outlet pipe. Because the combined form of the parallel centrifugal fan and the axial flow fan is adopted, the cleaning effect of the oat cleaning and sorting machine can be increased. Secondly, the seeds separated by the combined fan and the cylindrical sieve fall into a seed conveying assembly at the lower end of the frame, and the accumulated seeds are conveyed out of the machine by a screw conveyor. In the process, the suspension speed of the oat grains is different due to the mass difference between the grains and glumes, bran and some light impurities, so that the oat grains are not discharged out of the machine along with the glumes, the bran and the like.

Claims (8)

1. The utility model provides a combination fan formula oat cleaning and sorting machine, includes frame (1) and sets up feeding hopper (2) in frame (1), screening subassembly, cleaning fan subassembly, seed grain conveying component and power component, its characterized in that: the frame (1) is of a rectangular frame structure, a partition plate (3) is vertically arranged in the frame (1), the partition plate (3) is parallel to the width side of the rectangular frame structure frame (1) to divide the interior of the frame (1) into two cavity spaces of a fan chamber (4) and a cleaning chamber (5), a feeding hopper (2) is arranged on the frame (1) corresponding to the upper part of the cleaning chamber (5) and can feed materials into the cleaning chamber (5), a screening component is arranged in the cleaning chamber (5), the screening component comprises a plurality of cylindrical sieves (6) which are horizontally arranged and are arranged in parallel, the cylindrical sieves (6) are arranged along the length side direction parallel to the rectangular frame structure frame (1), and the cylindrical diameters of the cylindrical sieves (6) are sequentially reduced in the arrangement direction from the position close to the fan chamber (4) to the position far away from the fan chamber (4), the oat screening device comprises a feeding hopper (2), a cylindrical sieve (6) with the largest cylinder diameter, a plurality of sieve holes, a plurality of horizontal lines and a plurality of inclined lines, wherein the cylindrical sieve (6) is arranged right below the feeding hopper (2) and used for receiving oat raw materials conveyed by the feeding hopper (2) in a first-stage screening mode, the side wall of each cylindrical sieve (6) is uniformly provided with a plurality of sieve holes, the side wall of each cylindrical sieve (6) is in a wavy shape formed by a plurality of sections of broken lines in the direction parallel to the axial direction of the cylindrical sieve, the wavy undulating concave-convex directions of corresponding positions of the side walls of every two adjacent cylindrical sieves (6) are opposite, the distance between each point on the side wall of each cylindrical sieve (6) and the side wall of the adjacent cylindrical sieve (6) is equal, the plurality of broken lines forming the side wall of each cylindrical sieve (6) are formed by alternately connecting a plurality of horizontal lines and a plurality of inclined lines, the included angle between each inclined line and the horizontal line is 10 degrees, the number of the cylindrical sieves (6) is three, and the cylindrical sieves are divided into large cylindrical sieves, the oat raw materials conveyed by the diameter, The height difference of the central axes of the two adjacent cylindrical sieves (6) in the vertical direction is 70 mm;
the cleaning fan component comprises a centrifugal fan (7) and an axial flow fan (8), wherein the centrifugal fan (7) is installed in a fan chamber (4) of the frame (1), an air outlet of the centrifugal fan supplies air to the cleaning chamber (5) through a through hole formed in the partition plate (3), the centrifugal fan is used for carrying out winnowing separation between oat grains and impurities on materials screened out through the sieve holes of the cylindrical sieve (6), the axial flow fan (8) is arranged above the frame (1), a rectangular air outlet pipe (9) is horizontally arranged between the axial flow fan (8) and the frame (1), the rectangular air outlet pipe (9) is installed right above the cleaning chamber (5), one end, close to the fan chamber (4), of the rectangular air outlet pipe (9) is communicated with an air outlet pipeline (801) of the axial flow fan (8) in a butt joint mode, one end, far away from the fan chamber (4), of the rectangular air outlet pipe (9) is communicated with external atmosphere, the bottom plate (901) of the rectangular air outlet pipe (9) is in a corrugated shape which fluctuates up and down, a round hole (10) is formed in each upward bulge in the corrugated structure of the bottom plate (901), and the round hole (10) can form local low pressure when air blown out by the axial flow fan (8) flows through the rectangular air outlet pipe (9), so that light impurities in the cleaning chamber (5) are adsorbed into the rectangular air outlet pipe (9) and are discharged out of the cleaning machine along with airflow in the rectangular air outlet pipe (9);
the grain conveying assembly comprises a V-shaped collecting plate (11) arranged below the screening assembly and a spiral conveyor (12) arranged in a concave groove of the V-shaped collecting plate (11), one side of the V-shaped collecting plate (11) is butted with the lower end face of a through hole formed in the partition plate (3), and the other side of the V-shaped collecting plate (11) is connected with the rack (1); the power assembly is respectively connected with the screening assembly, the cleaning fan assembly and the grain conveying assembly and used for providing power for the movement of the power assembly.
2. A combination fan oat cleaner according to claim 1, characterised in that: the feeding hopper (2) is of a funnel-shaped structure with an opening at the lower end, and the included angle between the side wall of the feeding hopper (2) and the horizontal plane is 45 degrees.
3. A combination fan oat cleaner according to claim 1, characterised in that: the height of the central axis of the air outlet of the centrifugal fan (7) is lower than that of the central axis of the cylindrical sieve (6) with the largest diameter.
4. A combination fan oat cleaner according to claim 1, characterised in that: the cleaning and sorting machine further comprises a control mechanism arranged on the frame (1), and the control mechanism is electrically connected with the power assembly, the screening assembly, the cleaning fan assembly and the grain conveying assembly and used for regulating and controlling the power assembly to drive the screening assembly, the cleaning fan assembly and the grain conveying assembly to respectively complete the screening, wind power cleaning and grain conveying operation of the oat raw materials.
5. A combination fan oat cleaner according to claim 1, characterised in that: the screw conveyor (12) of the kernel conveying assembly is arranged along the width direction of the frame (1).
6. A combination fan oat cleaner according to claim 1, characterised in that: the diameter of the cylinder of the large cylinder screen is 350mm, the diameter of the cylinder of the middle cylinder screen is 300mm, and the diameter of the cylinder of the small cylinder screen is 250 mm.
7. A combination fan oat cleaner according to claim 1, characterised in that: the power assembly comprises two motors, the two motors respectively provide power for the centrifugal fan (7) and the cylindrical screen (6) with the largest diameter, the power is transmitted among the cylindrical screens (6) through a belt, and the centrifugal fan (7) also transmits power for the spiral conveyor (12) and the axial flow fan (8) through the belt.
8. A combination fan oat cleaner according to claim 1, characterised in that: the side wall of the cylindrical screen (6) is a woven screen, and two ends of the cylindrical screen (6) are fixedly connected with the rack (1) through bearing seats.
CN201811245511.4A 2018-10-24 2018-10-24 Combined fan type oat cleaner Active CN109261516B (en)

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