Crop selection and screening device for agricultural technology popularization

Abstract

The utility model belongs to the technical field of crop seed selection screening device, especially relates to a crop seed selection screening device for agricultural technology popularization. Including frame, the fixed casing has on the frame, the rotatory joint has the pivot on the casing, the pivot one end is connected with motor, and the motor is fixed on the frame, and the fixed drum screen has on the pivot, and the drum screen rotatory joint casing, the spiral scraper is fixed on the drum screen outer wall, and the casing is inserted with at least one movable rod, and the movable rod bottom end is installed with the vibrating wheel, and the spring is connected between the vibrating wheel and the casing, and the casing bottom is connected with the feed pipe, dust removal pipe, sieve under material discharge gate, sieve on material discharge gate. The utility model closes the drum screen through the casing, and the dust is sucked away through the dust removal pipe, so as to improve the operation environment in the process of screening seed.

Description

Technical Field

[0001] This utility model belongs to the technical field of crop selection and screening devices, and particularly relates to a crop selection and screening device for agricultural technology extension. Background Technology

[0002] Before planting, crop seeds need to be screened to select plump seeds. However, after harvesting, crop seeds are often mixed with dust and other impurities. Screening with a drum screen generates a lot of dust, making the working environment quite harsh. During drum screen screening, seeds easily get stuck on the screen mesh, clogging the screen and affecting screening efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a crop selection and screening device for agricultural technology extension, so as to solve the problems existing in the prior art.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A crop selection and screening device for agricultural technology extension includes a frame, a housing fixed on the frame, a rotating shaft rotatably connected to the housing, a motor connected to one end of the rotating shaft, the motor fixed on the frame, a drum screen fixed on the rotating shaft, the drum screen rotatably connected to the housing, a spiral scraper fixed on the outer wall of the drum screen, at least one movable rod inserted into the housing, a vibrating wheel installed at the bottom end of the movable rod, a spring connected between the vibrating wheel and the housing, and the housing connected to a feed pipe, a dust removal pipe, an undersize discharge port, and an oversize discharge port.

[0006] Furthermore, the housing is cylindrical and is fixed to the frame at an angle from front to back. Both ends of the housing have flanges. The flange at the front end of the housing is bolted to a first slewing bearing and a front end plate, and the flange at the rear end of the housing is bolted to a rear end plate. An annular first fixing plate is welded to the inner wall of the housing, and the housing is bolted to a second slewing bearing through the first fixing plate.

[0007] Furthermore, the shell is bolted to the outer rings of the first slewing bearing and the second slewing bearing. The drum screen is coaxial with the shell. The drum screen includes radial stiffeners, axial stiffeners, and a screen mesh. The radial stiffeners and axial stiffeners are welded together to form a cylindrical frame of the drum screen. The screen mesh is fixed on the cylindrical frame. The front end of the cylindrical frame of the drum screen has a flange and the rear end is welded with an annular second fixing plate. The drum screen is bolted to the inner rings of the first slewing bearing and the second slewing bearing respectively through the flange and the second fixing plate.

[0008] Furthermore, the rotating shaft is connected to the housing via bearings on the front and rear end plates. Several spokes are welded onto the rotating shaft, and the other end of each spoke is welded to the inner wall of the cylindrical frame of the drum screen. The rotating shaft is fixed to the drum screen via the spokes.

[0009] Furthermore, at least one cover is connected to the shell, and a round tube is connected to the top of the cover. The movable rod is inserted into the shell through the cover and the round tube. The bottom end of the vibrating wheel abuts against the radial stiffener of the drum screen. At least one wedge block is welded to the radial stiffener that abuts against the vibrating wheel.

[0010] Furthermore, the outer edge of the spiral scraper is close to the inner wall of the housing, and the spiral scraper is interrupted at the radial rib where the vibrating wheel is abutted.

[0011] Furthermore, the oversize discharge port is located at the bottom of the housing between the second slewing bearing and the rear end plate, while the undersize discharge port is located at the bottom of the housing between the first slewing bearing and the second slewing bearing and is close to the second slewing bearing.

[0012] Furthermore, there are two dust removal pipes, which are located on the top of the housing between the first slewing bearing and the second slewing bearing, and between the second slewing bearing and the rear end plate, respectively.

[0013] Furthermore, the feed pipe is connected to the front end plate and extends into the cylindrical frame of the drum screen.

[0014] This utility model has the following beneficial effects:

[0015] 1. This utility model seals the drum screen with a shell and removes dust through a dust removal pipe, thereby improving the working environment during the screening process.

[0016] 2. The vibrating wheel strikes the drum screen, thereby shaking off the seeds stuck in the screen mesh, thus preventing the screen mesh from being blocked by seeds and avoiding affecting the screening efficiency.

[0017] 3. The first and second slewing bearings support the drum screen, avoiding the slewing bearing from bearing the entire weight of the drum screen and causing deformation of the shaft.

[0018] 4. When the drum screen rotates, the spiral scraper pushes the screened material from the front end to the rear end of the shell until it falls at the screened material outlet, thus preventing the screened material from accumulating inside the shell due to the small screened material outlet. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the internal cross-sectional structure of the casing of this utility model.

[0021] Figure 3 This is a schematic diagram of the internal cross-sectional structure of the drum screen of this utility model.

[0022] Figure 4 This is a schematic diagram of the cross-sectional structure of the shell of this utility model.

[0023] Figure 5 This is a schematic diagram of the structure of the drum screen of this utility model.

[0024] Figure 6 This is a utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0025] The components are: 1. Frame; 2. Housing; 3. Rotary shaft; 4. Motor; 5. Drum screen; 6. Spiral scraper; 7. Movable rod; 8. Vibrating wheel; 9. Spring; 10. Feed pipe; 11. Dust removal pipe; 12. Undersize material outlet; 13. Oversize material outlet; 14. First slewing bearing; 15. Front blocking plate; 16. Rear blocking plate; 17. First fixed plate; 18. Second slewing bearing; 19. Radial stiffener; 20. Axial stiffener; 21. Screen; 22. Second fixed plate; 23. Spoke rod; 24. Cover; 25. Circular tube; 26. Wedge block. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with specific embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the scope of the utility model.

[0027] like Figure 1-6 As shown, a crop selection and screening device for agricultural technology extension includes a frame 1, a housing 2 fixed on the frame 1, a rotating shaft 3 rotatably connected to the housing 2, a motor 4 connected to one end of the rotating shaft 3, the motor 4 fixed on the frame 1, a drum screen 5 fixed on the rotating shaft 3, the drum screen 5 rotatably connected to the housing 2, a spiral scraper 6 fixed on the outer wall of the drum screen 5, at least one movable rod 7 inserted into the housing 2, a vibrating wheel 8 installed at the bottom end of the movable rod 7, a spring 9 connected between the vibrating wheel 8 and the housing 2, and the housing 2 connected to a feed pipe 10, a dust removal pipe 11, an undersize discharge port 12, and an oversize discharge port 13.

[0028] The shell 2 is cylindrical and is fixed to the frame 1 at an angle from front to back downwards. This angled installation allows the seeds to roll from the front end to the rear end of the drum screen 5 during rotation. Both ends of the shell 2 have flanges. The flange at the front end of the shell 2 is bolted with a first slewing bearing 14 and a front end plate 15, while the flange at the rear end of the shell 2 is bolted with a rear end plate 16. An annular first fixing plate 17 is welded to the inner wall of the shell 2, and a second slewing bearing 18 is bolted to the shell 2 through the first fixing plate 17.

[0029] The housing 2 is bolted to the outer rings of the first slewing bearing 14 and the second slewing bearing 18. The drum screen 5 is coaxial with the housing 2. The drum screen 5 includes radial stiffeners 19, axial stiffeners 20, and a screen mesh 21. The radial stiffeners 19 and axial stiffeners 20 are welded together to form a cylindrical frame of the drum screen 5. The screen mesh 21 is fixed on the cylindrical frame. The front end of the cylindrical frame of the drum screen 5 has a flange, and the rear end is welded with an annular second fixing plate 22. The drum screen 5 is bolted to the inner rings of the first slewing bearing 14 and the second slewing bearing 18 through the flange and the second fixing plate 22, respectively. The first slewing bearing 14 and the second slewing bearing 18 support the drum screen 5, preventing the shaft 3 from bearing the entire weight of the drum screen 5 and causing deformation of the shaft 3.

[0030] The rotating shaft 3 is connected to the housing 2 via bearings through the front end plate 15 and the rear end plate 16. Several spokes 23 are welded onto the rotating shaft 3, and the other end of each spoke 23 is welded to the inner wall of the cylindrical frame of the drum screen 5. The rotating shaft 3 is fixed to the drum screen 5 by the spokes 23. The rotating shaft 3 only serves to drive the drum screen 5 to rotate, thus preventing deformation due to excessive load.

[0031] At least one cover 24 is connected to the shell 2, and a round tube 25 is connected to the top of the cover 24. The movable rod 7 is inserted into the shell 2 through the cover 24 and the round tube 25. The bottom end of the vibrating wheel 8 abuts against the radial stiffener 19 of the drum screen 5. At least one wedge block 26 is welded to the radial stiffener 19 that abuts against the vibrating wheel 8. One end of the wedge block 26 is higher than the other end. As the drum screen 5 rotates, the wedge block 26 can lift the vibrating wheel 8, thereby compressing the spring 9. Then the wedge block 26 rotates away, and the elastic force of the spring 9 causes the vibrating wheel 8 to vibrate the drum screen 5, thereby causing the seeds stuck on the screen 21 to fall off.

[0032] The outer edge of the spiral scraper 6 is close to the inner wall of the housing 2. The spiral scraper 6 is interrupted at the radial stiffener 19 where the vibrating wheel 8 is abutted, so that the vibrating wheel 8 can roll on the drum screen 5 without obstruction.

[0033] The oversize discharge port 13 is located at the bottom of the housing 2 between the second slewing bearing 18 and the rear block plate 16, and the undersize discharge port 12 is located at the bottom of the housing 2 between the first slewing bearing 14 and the second slewing bearing 18 and is close to the second slewing bearing 18. The second slewing bearing 18 acts as a separator, allowing the oversize and undersize materials to fall from different outlets.

[0034] There are two dust collection pipes 11, located on the top of the housing 2 between the first slewing bearing 14 and the second slewing bearing 18, and between the second slewing bearing 18 and the rear end plate 16, respectively. Dust is sucked away through the dust collection pipes 11.

[0035] The feed pipe 10 is connected to the front blocking plate 15 and extends into the cylindrical frame of the drum screen 5.

[0036] The working principle of this utility model is as follows:

[0037] In operation, seeds enter the drum screen 5 through the feed pipe 10. The motor 4 drives the drum screen 5 to rotate, thereby screening the seeds. Impurities such as shriveled seeds and soil particles pass through the screen 21 and fall between the shell 2 and the drum screen 5 as undersize. Due to the small size of the undersize outlet, the screened undersize accumulates inside the shell 2. As the drum screen 5 rotates, the spiral scraper 6 pushes the undersize from the front end to the rear end of the shell 2 until it falls at the undersize outlet. Plump seeds are retained as oversize. As the inclined drum screen 5 rotates, the oversize rolls to the rear end of the drum screen 5 and falls from the oversize outlet.

[0038] The dust collection pipe 11 is connected to the workshop dust collector, and the dust generated during screening is sucked away through the dust collection pipe 11. When the drum screen 5 rotates, the vibrating wheel 8 rolls with it. When the wedge block 26 rotates to the position of the vibrating wheel 8, the vibrating wheel 8 is gradually raised, thereby compressing the spring 9. After reaching the highest point of the wedge block 26, the wedge block 26 rotates away with the drum screen 5. The vibrating wheel 8 loses the direct support of the wedge block 26. Under the elastic force of the spring 9, the vibrating wheel 8 strikes the drum screen 5 downward, thereby shaking off the seeds stuck in the screen 21, thus preventing the mesh of the screen 21 from being blocked by seeds and avoiding affecting the screening efficiency.

[0039] The above embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention.

[0040] The technologies, shapes, and structures not described in detail in this utility model are all known technologies.

Claims

1. A crop selection and screening device for agricultural technology extension, characterized in that, The device includes a frame, on which a housing is fixed. A rotating shaft is rotatably connected to the housing, and a motor is connected to one end of the rotating shaft. The motor is fixed to the frame. A drum screen is fixed to the rotating shaft and rotatably connected to the housing. A spiral scraper is fixed to the outer wall of the drum screen. At least one movable rod is inserted into the housing, and a vibrating wheel is installed at the bottom of the movable rod. A spring is connected between the vibrating wheel and the housing. The housing is connected to a feed pipe, a dust removal pipe, an undersize discharge port, and an oversize discharge port.

2. The crop selection and screening device for agricultural technology extension according to claim 1, characterized in that, The housing is cylindrical and is fixed to the frame at an angle from front to back. Both ends of the housing have flanges. The flange at the front end of the housing is bolted to a first slewing bearing and a front end plate, and the flange at the rear end of the housing is bolted to a rear end plate. An annular first fixing plate is welded to the inner wall of the housing, and the housing is bolted to a second slewing bearing through the first fixing plate.

3. The crop selection and screening device for agricultural technology extension according to claim 2, characterized in that, The oversize discharge port is located at the bottom of the housing between the second slewing bearing and the rear block plate, and the undersize discharge port is located at the bottom of the housing between the first slewing bearing and the second slewing bearing and is close to the second slewing bearing.

4. The crop selection and screening device for agricultural technology extension according to claim 2, characterized in that, There are two dust removal pipes, which are located on the top of the housing between the first slewing bearing and the second slewing bearing, and between the second slewing bearing and the rear end plate, respectively.

5. The crop selection and screening device for agricultural technology extension according to claim 2, characterized in that, The shell is bolted to the outer rings of the first slewing bearing and the second slewing bearing. The drum screen is coaxial with the shell. The drum screen includes radial stiffeners, axial stiffeners, and a screen mesh. The radial stiffeners and axial stiffeners are welded together to form a cylindrical frame of the drum screen. The screen mesh is fixed on the cylindrical frame. The front end of the cylindrical frame of the drum screen has a flange and the rear end is welded with an annular second fixing plate. The drum screen is bolted to the inner rings of the first slewing bearing and the second slewing bearing respectively through the flange and the second fixing plate.

6. The crop selection and screening device for agricultural technology extension according to claim 5, characterized in that, The feed pipe is connected to the front end plate and extends into the cylindrical frame of the drum screen.

7. The crop selection and screening device for agricultural technology extension according to claim 5, characterized in that, The rotating shaft is connected to the housing via a front end plate and a rear end plate bearing. Several spokes are welded onto the rotating shaft, and the other end of each spoke is welded to the inner wall of the cylindrical frame of the drum screen. The rotating shaft is fixed to the drum screen via the spokes.

8. The crop selection and screening device for agricultural technology extension according to claim 5, characterized in that, At least one cover is connected to the shell, and a round tube is connected to the top of the cover. The movable rod is inserted into the shell through the cover and the round tube. The bottom end of the vibrating wheel abuts against the radial stiffener of the drum screen. At least one wedge block is welded to the radial stiffener that abuts against the vibrating wheel.

9. The crop selection and screening device for agricultural technology extension according to claim 8, characterized in that, The outer edge of the spiral scraper is close to the inner wall of the shell, and the spiral scraper has a notch at the radial rib where it abuts the vibrating wheel.

Images