CN220191527U - Corn grain screening device for corn threshing - Google Patents

Abstract

The utility model relates to the technical field of agricultural machinery, in particular to a corn grain screening device for corn threshing, which can uniformly input the threshed corn grains, reduce the labor intensity of operators and screen and classify the corn grains; the screening box comprises a screening box body, four supporting legs and four anti-skid pads, wherein the supporting legs are fixedly arranged at four corners of the bottom end of the screening box body respectively, and the anti-skid pads are fixedly arranged at the bottom ends of the supporting legs; still include out hopper, feed mechanism, rock mechanism, screening mechanism and selection by winnowing mechanism, the bottom of screening case is connected with the ejection of compact fill, and the feed inlet has been seted up on the top left portion of screening case, and feed mechanism installs in feed inlet department, rocks the inside of mechanism at the screening case, and screening mechanism installs on rocking mechanism, and selection by winnowing mechanism installs in the inside of screening case, and is located the below of screening mechanism.

Description

Corn grain screening device for corn threshing

Technical Field

The utility model relates to the technical field of agricultural machinery, in particular to a corn grain screening device for corn threshing.

Background

Corn is a annual hermaphrodite cross pollination plant, the plant is high and big, the stem is strong, the corn threshing machine is used for threshing corn from corn cobs, the corn threshing machine is used for producing corn kernels which contain more chips and impurities, namely, the chips and impurities are difficult to remove by using a blowing mode, and the broken corn kernels are contained in the corn kernels, so that the following production and processing are troublesome, screening is needed after threshing, and the corn kernels screening device for corn threshing, which is proposed by the prior art publication No. CN210008235U, comprises an L-shaped supporting plate, and is characterized in that: the upper end front and back side of L type layer board all welds the trapezoidal curb plate, and the metal screen cloth is installed to the upper end slope between two trapezoidal curb plates, the front and back side of the bottom surface of L type layer board all welds the U type chassis, has set up a plurality of balancing weights between two U type chassis, the outside of trapezoidal curb plate all welds the mounting panel, the diaphragm upper surface activity cartridge of L type layer board has the box of taking out of loading, the riser upper end welding of L type layer board has the feeder hopper, can be fast with kernel of corn and corncob separation. However, when the corn screening machine is used, corn kernels subjected to manual threshing are slowly added from the feed hopper, the feeding speed cannot be stably controlled through manual operation, the screening effect is affected, the labor intensity of operators is increased, and the corn kernels cannot be screened and classified.

Disclosure of Invention

In order to solve the technical problems, the utility model provides the corn grain screening device for corn threshing, which can uniformly input the threshed corn grains, reduce the labor intensity of operators and screen and classify the corn grains.

The utility model relates to a corn grain screening device for corn threshing, which comprises a screening box, four supporting legs and four anti-skid pads, wherein the supporting legs are respectively fixedly arranged at four corners of the bottom end of the screening box, and the anti-skid pads are fixedly arranged at the bottom ends of the supporting legs; the screening device comprises a screening box, and is characterized by further comprising a discharge hopper, a feeding mechanism, a shaking mechanism, a screening mechanism and a winnowing mechanism, wherein the bottom of the screening box is connected with the discharge hopper, the left part of the top end of the screening box is provided with the feeding port, the feeding mechanism is arranged at the feeding port, the shaking mechanism is arranged in the screening box, the screening mechanism is arranged on the shaking mechanism, and the winnowing mechanism is arranged in the screening box and is positioned below the screening mechanism; during operation evenly inputs the screening case through feed mechanism with the kernel of corn after threshing, reduces operating personnel's intensity of labour, screens the kernel of corn through screening mechanism, drives screening mechanism through rocking mechanism and rocks, improves screening effect, blows out dust and the corn silk that mix in the maize through the selection by winnowing mechanism, screens out substances such as dust that mix in the maize, and the maize is discharged through the ejection of compact fill screening case, improves the practicality.

Preferably, the feeding mechanism comprises a feeding box, a mounting box, a servo motor, a rotating rod and a spiral conveying blade, wherein the bottom end of the feeding box is communicated with a top feeding port of the screening box, the top end of the feeding box is funnel-shaped, the mounting box is fixedly mounted on the upper side of the inside of the feeding box through a supporting rod, the top end of the mounting box is conical, the servo motor is mounted in the mounting box, the output end of the servo motor penetrates through the bottom end of the mounting box and is fixedly connected with the rotating rod, the rotating rod stretches into the bottom of the feeding box, and the spiral conveying blade is mounted on the lower portion of the rotating rod; pouring the kernel of corn after breaking away from into the feeding case, start servo motor, servo motor's output drives the bull stick and rotates, and the bull stick rotates and drives the screw conveying leaf and rotate, carries the even to the screening case of kernel of corn, reduces operating personnel's intensity of labour, improves the continuity of feeding, and the top of installing the case sets up to the toper and can avoids the kernel of corn to remain.

Preferably, the shaking mechanism comprises two groups of sliding rails, two groups of convex sliding blocks, two moving frames, two sliding rods, two springs, a connecting plate, moving rods, a turntable, a driving motor and a fixed plate, wherein the two sliding rails are symmetrically arranged on the side walls of the front end and the rear end of the screening box; starting driving motor, driving motor drives the carousel and rotates, and the carousel rotates and drives the movable rod and remove pulling connecting plate and slide bar and remove, drives and removes frame and convex slider and slide on the top of slide rail, makes through the spring and removes the frame and reset fast to make and remove the frame and rock about the top of slide rail, improve screening effect, can use manpower sparingly and time greatly.

Preferably, the screening mechanism comprises a first screen, a second screen and two baffle frames, two discharge grooves are formed in the right side wall of the screening box, the bottom ends of the discharge grooves and the top ends of the sliding rails are located on the same horizontal plane, the first screen is fixedly arranged at the top ends of the upper end moving frames, the second screen is fixedly arranged at the top ends of the lower end moving frames, the right sides of the first screen and the second screen penetrate through the discharge grooves, the aperture of the first screen is larger than that of the second screen, the baffle frames are arranged at the top ends of the first screen and the second screen, and the right sides of the baffle frames are provided with openings; corn kernels of different size shapes fall into the screening box, large corn cobs and small cobs are screened out through the first screen, the corn kernels fall onto the second screen, the large corn kernels flow right at the top end of the second screen and are discharged through the discharge chute, and small corn kernels fall out from the lower side of the second screen, so that screening classification of the corn kernels is realized.

Preferably, the winnowing mechanism comprises a blower, a gas pipe, a plurality of air outlet heads, a collecting box and a box cover, wherein the blower is fixedly arranged at the right part of the top end of the fixed plate, the gas pipe is fixedly connected with the output end of the guide plate, the gas pipe penetrates through the side wall of the screening box and is fixedly connected with a spray pipe, the plurality of air outlet heads are uniformly arranged on the spray pipe, the right side wall of the screening box is provided with grooves at positions corresponding to the air outlet heads, the input end of the collecting box is fixedly arranged at the grooves, and the box cover is movably arranged at the lower part of the right side wall of the collecting box; small corn particles and dust fall down in the bottom of second screen cloth, start the air-blower, export to the spray tube through the gas-supply pipe, blow the dust in the maize to the collecting box through the air-out head, the kernel of corn discharges through the discharge hopper, opens the case lid and can clear up the collecting box inside.

Preferably, the screening box further comprises two guide plates and two groups of limiting plates, wherein the two guide plates are respectively and obliquely arranged on the right side wall of the screening box, the two guide plates are respectively positioned at the same height with the bottom end of the discharge chute, and the limiting plates are fixedly arranged at the front end and the rear end of the top of each guide plate; the corncob and the corn kernels discharged from the first screen and the second screen are respectively guided by the guide plates, so that convenience in collection is improved, and practicability is improved.

Compared with the prior art, the utility model has the beneficial effects that: during operation evenly inputs the screening case through feed mechanism with the kernel of corn after threshing, reduces operating personnel's intensity of labour, screens the kernel of corn through screening mechanism, drives screening mechanism through rocking mechanism and rocks, improves screening effect, blows out dust and the corn silk that mix in the maize through the selection by winnowing mechanism, screens out substances such as dust that mix in the maize, and the maize is discharged through the ejection of compact fill screening case, improves the practicality.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic illustration of an axially measured structure of the present utility model;

FIG. 3 is a schematic view of a front cross-sectional structure of the present utility model;

FIG. 4 is a schematic view of a left-hand cross-sectional structure of the present utility model;

FIG. 5 is an enlarged schematic view of the portion A of FIG. 3 according to the present utility model;

the reference numerals in the drawings: 1. a screening box; 2. a support leg; 3. an anti-slip pad; 4. discharging a hopper; 5. a feed box; 6. a mounting box; 7. a servo motor; 8. a rotating rod; 9. spiral conveying leaves; 10. a slide rail; 11. a convex slide block; 12. a moving frame; 13. a slide bar; 14. a spring; 15. a connecting plate; 16. a moving rod; 17. a turntable; 18. a driving motor; 19. a fixing plate; 20. a first screen; 21. a second screen; 23. a blocking frame; 24. a blower; 25. a gas pipe; 26. an air outlet head; 27. a collection box; 28. a case cover; 29. a guide plate; 30. and a limiting plate.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. This utility model may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

As shown in fig. 1, fig. 3, fig. 4 and fig. 5, the four corners of the bottom end of the screening box 1 are respectively and fixedly provided with a supporting leg 2, the bottom ends of the supporting legs 2 are fixedly provided with anti-slip pads 3, the bottom of the screening box 1 is connected with a discharge hopper 4, the left part of the top end of the screening box 1 is provided with a feed inlet, the bottom end of the feed box 5 is communicated with the feed inlet at the top end of the screening box 1, the top end of the feed box 5 is provided with a funnel shape, a mounting box 6 is fixedly arranged on the upper side of the inside of the feed box 5 through a supporting rod, the top end of the mounting box 6 is provided with a cone shape, the inside of the mounting box 6 is provided with a servo motor 7, the output end of the servo motor 7 passes through the bottom end of the mounting box 6 and is fixedly connected with a rotating rod 8, the rotating rod 8 stretches into the bottom of the feed box 5, the lower part of the rotating rod 8 is provided with spiral conveying blades 9, two sliding rails 10 are symmetrically arranged on the side walls at the front end and the rear end of the screening box 1, the two groups of sliding rails 10 are vertically arranged, the upper part of the sliding rail 10 is slidably provided with a convex sliding block 11, the top end of the convex sliding block 11 is respectively connected with the front end and the rear end of the bottom end of the movable frame 12, the left end of the movable frame 12 is fixedly connected with a sliding rod 13, the sliding rod 13 is slidably arranged on the left side wall of the screening box 1, two springs 14 are respectively sleeved on the sliding rod 13, the right end of each spring 14 is connected with the left side wall of the movable frame 12, the left end of each spring 14 is connected with the side wall of the screening box 1, the left end of the sliding rod 13 is fixedly connected with a connecting plate 15, the middle part of the connecting plate 15 is rotatably provided with a movable rod 16, the other end of the movable rod 16 is eccentrically and rotatably arranged on a rotary disc 17, the rotary disc 17 is fixedly connected with the output end of a driving motor 18, the driving motor 18 is fixedly arranged on the left end of the top end of a fixing plate 19, the fixing plate 19 is fixedly arranged on the left side wall of the screening box 1, the right side wall of the screening box 1 is provided with two discharging grooves, the bottom end of the discharge chute is positioned on the same horizontal plane with the top end of the sliding rail 10, a first screen 20 is fixedly arranged at the top end of the upper end moving frame 12, a second screen 21 is fixedly arranged at the top end of the lower end moving frame 12, the right sides of the first screen 20 and the second screen 21 penetrate through the discharge chute, the aperture of the first screen 20 is larger than that of the second screen 21, a baffle frame 23 is arranged at the top ends of the first screen 20 and the second screen 21, and an opening is formed in the right side of the baffle frame 23;

pouring the corn kernels after breaking away from into the feeding box 5, starting the servo motor 7, driving the rotary rod 8 to rotate by the output end of the servo motor 7, driving the spiral conveying blades 9 to rotate by the rotary rod 8, conveying the corn kernels evenly into the screening box 1, reducing labor intensity of operators, improving feeding continuity, setting the top end of the mounting box 6 to be conical, avoiding corn kernels to remain, enabling corn kernels of different sizes and shapes to fall into the screening box 1, screening out large corn kernels and small stone impurities by the first screen 20, enabling the corn kernels to fall onto the second screen 21, enabling the large corn kernels to flow rightwards at the top end of the second screen 21, discharging the small corn kernels from the lower side of the second screen 21, achieving screening classification of the corn kernels, starting the driving motor 18, driving the rotary disc 17 to rotate by the driving motor 18, driving the moving rod 16 to move and pull the connecting plate 15 and the sliding rod 13, driving the moving frame 12 and the convex sliding block 11 to slide at the top end of the sliding rail 10, enabling the moving frame 12 to reset rapidly by the spring 14, and accordingly enabling the moving frame 12 to flow leftwards and rightwards at the top end of the sliding rail 10, improving manpower and shaking effects greatly.

As shown in fig. 1 to 3, the blower 24 is fixedly installed at the right part of the top end of the fixed plate 19, the output end of the guide plate 29 is fixedly connected with the air pipe 25, the air pipe 25 passes through the side wall of the screening box 1 and is fixedly connected with the spray pipe, a plurality of air outlet heads 26 are uniformly installed on the spray pipe, the right side wall of the screening box 1 is provided with grooves at positions corresponding to the air outlet heads 26, the input end of the collecting box 27 is fixedly installed at the grooves, the lower part of the right side wall of the collecting box 27 is movably provided with a box cover 28, the two guide plates 29 are respectively obliquely installed on the right side wall of the screening box 1, the two guide plates 29 are respectively positioned at the same height with the bottom ends of the discharge grooves, and the front end and the rear end of the top of the guide plate 29 are fixedly installed with limiting plates 30;

small corn particles and dust fall down in the bottom of second screen cloth 21, start air-blower 24, export to the spray tube through gas-supply pipe 25, blow the dust in the maize to collecting box 27 through air-out head 26, the maize passes through the discharge hopper 4 to be discharged, open case lid 28 and can clear up collecting box 27 inside, lead respectively first screen cloth 20 and second screen cloth 21 exhaust corncob and kernel of corn through deflector 29, convenience when improving the collection improves the practicality.

As shown in figures 1 to 5, in the corn grain screening device for corn threshing, in the utility model, corn grains separated during operation are poured into a feeding box 5, a servo motor 7 is started, the output end of the servo motor 7 drives a rotating rod 8 to rotate, the rotating rod 8 drives a spiral conveying blade 9 to rotate, corn grains are uniformly conveyed into the screening box 1, corn grains with different sizes and shapes fall into the screening box 1, large corn cores and small stone impurities are screened out through a first screen 20, the corn grains fall onto a second screen 21, the large corn grains flow rightwards at the top end of the second screen 21, are discharged through a discharge chute, small corn grains fall out from the lower part of the second screen 21, a driving motor 18 is started, the driving motor 18 drives a rotary table 17 to rotate, the rotary table 17 drives a moving rod 16 to move a connecting plate 15 and a sliding rod 13 to move, a moving frame 12 and a convex sliding block 11 to slide at the top end of a sliding rail 10, the moving frame 12 is quickly reset through a spring 14, the moving frame 12 is enabled to shake left and right at the top end of the sliding rail 10, the small corn grains and the small corn grains fall into a hopper 24 through a discharge chute, namely, the dust is discharged into a dust collecting hopper 27 through a discharge hopper 24, and a dust collecting hopper is opened to the inside a dust collecting hopper 27, and the dust is discharged into the hopper 24 through a dust collecting hopper, and the dust collecting hopper is opened through a dust box 27.

The servo motor 7, the driving motor 18 and the blower 24 of the corn grain screening device for corn threshing are purchased on the market, and a person skilled in the art only needs to install and operate according to the attached instruction of the person skilled in the art, without the need of creative labor.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.

Claims (6)

1. The corn grain screening device for corn threshing comprises a screening box (1), four supporting legs (2) and four anti-skid pads (3), wherein the supporting legs (2) are fixedly arranged at four corners of the bottom end of the screening box (1), and the anti-skid pads (3) are fixedly arranged at the bottom ends of the supporting legs (2); the screening device is characterized by further comprising a discharge hopper (4), a feeding mechanism, a shaking mechanism, a screening mechanism and a winnowing mechanism, wherein the bottom of the screening box (1) is connected with the discharge hopper (4), the feeding port is formed in the left part of the top end of the screening box (1), the feeding mechanism is arranged at the feeding port, the shaking mechanism is arranged in the screening box (1), the screening mechanism is arranged on the shaking mechanism, and the winnowing mechanism is arranged in the screening box (1) and is located below the screening mechanism.

2. The corn grain screening device for corn threshing according to claim 1, characterized in that the feeding mechanism comprises a feeding box (5), a mounting box (6), a servo motor (7), a rotating rod (8) and a spiral conveying blade (9), the bottom end of the feeding box (5) is communicated with a top feeding port of the screening box (1), the top end of the feeding box (5) is arranged to be funnel-shaped, the mounting box (6) is fixedly mounted on the upper side of the inside of the feeding box (5) through a supporting rod, the top end of the mounting box (6) is arranged to be cone-shaped, the servo motor (7) is mounted in the mounting box (6), the output end of the servo motor (7) penetrates through the bottom end fixedly connected with the rotating rod (8) of the mounting box (6), the rotating rod (8) stretches into the bottom of the feeding box (5), and the spiral conveying blade (9) is mounted on the lower portion of the rotating rod (8).

3. The corn grain screening device for corn threshing of claim 1, wherein the shaking mechanism comprises two groups of sliding rails (10), two groups of convex sliding blocks (11), two moving frames (12), two sliding rods (13), two springs (14), a connecting plate (15), a moving rod (16), a rotary table (17), a driving motor (18) and a fixed plate (19), the two sliding rails (10) are symmetrically arranged on the side walls of the front end and the rear end of the screening box (1), the two groups of sliding rails (10) are vertically arranged, the convex sliding blocks (11) are slidably arranged on the upper parts of the sliding rails (10), the top ends of the convex sliding blocks (11) are respectively connected with the front end and the rear end of the bottom end of the moving frame (12), the left end of the moving frame (12) is fixedly connected with the sliding rod (13), the sliding rod (13) is slidably arranged on the left side wall of the screening box (1), the right end of the spring (14) is respectively sleeved on the sliding rod (13), the left end of the spring (14) is connected with the left side wall of the moving frame (12), the middle part of the rotating rod (16) is rotatably connected with the rotating connecting plate (16), the other end of the sliding rod (16) is rotatably connected with the rotating connecting plate (16), the rotary table (17) is fixedly connected to the output end of the driving motor (18), the driving motor (18) is fixedly arranged at the left part of the top end of the fixing plate (19), and the fixing plate (19) is fixedly arranged on the left side wall of the screening box (1).

4. A corn grain screening plant for threshing corn as claimed in claim 3, characterized in that the screening mechanism comprises a first screen (20), a second screen (21) and two baffle frames (23), two discharge grooves are formed in the right side wall of the screening box (1), the bottom ends of the discharge grooves and the top ends of the sliding rails (10) are located on the same horizontal plane, the first screen (20) is fixedly arranged at the top ends of the upper end moving frames (12), the second screen (21) is fixedly arranged at the top ends of the lower end moving frames (12), the right sides of the first screen (20) and the second screen (21) penetrate through the discharge grooves, the aperture of the first screen (20) is larger than that of the second screen (21), the baffle frames (23) are arranged at the top ends of the first screen (20) and the second screen (21), and openings are formed in the right sides of the baffle frames (23).

5. A corn grain screening device for threshing corn as claimed in claim 3, characterized in that the air separation mechanism comprises a blower (24), an air pipe (25), a plurality of air outlet heads (26), a collecting box (27) and a box cover (28), wherein the blower (24) is fixedly arranged at the right part of the top end of the fixed plate (19), the air pipe (25) is fixedly connected with the output end of the guide plate (29), the air pipe (25) penetrates through a spray pipe fixedly connected with the side wall of the screening box (1), the air outlet heads (26) are uniformly arranged on the spray pipe, a slot is formed in the position, corresponding to the air outlet heads (26), of the right side wall of the screening box (1), the input end of the collecting box (27) is fixedly arranged at the slot, and the box cover (28) is movably arranged at the lower part of the right side wall of the collecting box (27).

6. The corn grain screening device for corn threshing according to claim 4, further comprising two guide plates (29) and two groups of limiting plates (30), wherein the two guide plates (29) are obliquely arranged on the right side wall of the screening box (1) respectively, the two guide plates (29) are located at the same height with the bottom end of the discharge chute respectively, and the limiting plates (30) are fixedly arranged at the front end and the rear end of the top of the guide plates (29).