Corn planter grain screening device
By using a combination of a screening cone and a vibrating bar in the corn kernel screening device, the problems of clogging and dust filtration during the corn kernel screening process are solved, achieving efficient screening and convenient maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHOUGUANG XIONGDI MASCH CO LTD
- Filing Date
- 2025-04-30
- Publication Date
- 2026-07-14
Smart Images
Figure CN224486645U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of agricultural implements technology, specifically to a rice grain screening device for a corn planter. Background Technology
[0002] Corn is an annual herbaceous plant belonging to the Poaceae family, also known as maize, corncob, and pearl rice. As a high-yield grain crop in China, corn is an important feed source for animal husbandry, aquaculture, and other industries. It is also an indispensable raw material for food, medical and health, light industry, and chemical industry. Before planting corn, screening devices are needed to screen the corn kernels to ensure the quality of corn planting.
[0003] A prior art patent with publication number CN221017235U discloses a solution including a base plate, a screening box and a vibration motor mounted on the top of the base plate via a shock-absorbing mechanism, a discharge port on the screening box, and a screen plate, slide rail, slide plate, threaded rod and rack inside the screening box. A cleaning roller and gears are mounted on the slide plate, with the gears meshing with the rack. A feed hopper is located on the top of the screening box, and a collection box is also slidably mounted on the screening box. This invention, through the action of the cleaning roller and scraper, can clean the corn kernels remaining on the screen plate, reducing the occurrence of corn kernel clogging the screen holes and thus ensuring the efficiency of the screen plate. Combined with the gear and rack mechanism, it improves the quality of screen plate cleaning. With the help of a dust collection device, it can reduce the impact of dust on workers and the working environment during the corn kernel screening process.
[0004] The shortcomings of existing technology have gradually become apparent with use, mainly in the following aspects:
[0005] First, during the screening process, when corn kernels get stuck on the screen, the existing cleaning structure cannot remove them, thus reducing screening efficiency.
[0006] Secondly, existing corn kernel screening processes require the use of dust removal structures to extract dust. Due to the large amount of dust mixed in the corn kernel pile, the dust filtration structure is easily clogged, increasing the difficulty of cleaning for operators.
[0007] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content
[0008] To address the shortcomings of existing technologies, this utility model provides a corn grain screening device for corn planters. This device solves the problem that in traditional technologies, when corn grains are stuck on the screen, the existing cleaning structure cannot remove the stuck corn grains, thus reducing screening efficiency.
[0009] To achieve the above objectives, this utility model provides the following technical solution:
[0010] A grain screening device for a corn planter includes a covering box. A screening cone is horizontally rotatable between opposite end faces of the covering box. Inside the screening cone, several screening mesh areas with decreasing mesh sizes are arranged side-by-side along the narrowing direction. Spiral guide vanes are fixed to the inner wall of the screening cone.
[0011] The covering box is horizontally fixed with a support rod in the area above the screening cone. Several guide holes are opened in parallel along the axial direction of the screening cone on the support rod. A vibrating rod is slidably arranged vertically in each guide hole. The vibrating rods alternately contact the outer top surface of the screening cone.
[0012] As an optimized solution, a dust collection hood that communicates with the inner cavity is fixed to the outer top surface of the enclosed box, and the dust collection hood is connected to a dust collection box through an air pipe.
[0013] As an optimized solution, a partition is horizontally fixed inside the dust collection box, dividing the dust collection box into a pre-filter area and a post-filter area from top to bottom. The air pipe connects to the pre-filter area. A negative pressure suction cylinder connecting to the post-filter area is fixed to the outer wall of the dust collection box. A through hole is opened on the partition, and a support cylinder covering the through hole is fixed to the lower edge of the through hole. A filter bag is detachably connected to the support cylinder.
[0014] As an optimized solution, a crankshaft is provided for horizontal rotation between the relative inner walls of the encased box. A drive rod is hinged to the eccentric end of the crankshaft, and the swing end of the drive rod is hinged to the upper end of the vibrating rod through a buffer structure.
[0015] As an optimized solution, the buffer structure includes a guide cylinder fixed to the upper end of the vibrating rod, and a guide post is slidably provided in the guide cylinder along the vertical direction. The upper end of the guide post is hinged to the swing end of the drive rod through a hinge seat.
[0016] As an optimized solution, the guide cylinder has a rectangular guide hole along the axial direction, a guide block is fixedly connected to the side wall of the guide post and slidably constrained in the rectangular guide hole, an abutment ring is fixedly connected to the outer wall of the guide post, and a compression spring is fitted on the guide post, with the two ends of the compression spring abutting against the abutment ring and the upper end of the guide cylinder, respectively.
[0017] As an optimized solution, a top drive motor for driving the crankshaft to rotate is fixed to the outer wall of the enclosed housing.
[0018] As an optimized solution, the lower end of the support cylinder is fixedly connected to a support mesh frame located inside the filter bag.
[0019] As an optimized solution, an annular connecting handle is fixedly connected to the outer wall of the support cylinder near the upper end, and the upper port of the filter bag is clamped onto the annular connecting handle using a clamp.
[0020] As an optimized solution, an operation hole is provided on the side wall of the dust collection box, and a closed door that can open and close the operation hole is hinged to the outer wall of the dust collection box.
[0021] As an optimized solution, the inner bottom surface of the covering box is fixedly connected to a partition plate adjacent to the screening mesh area, and several storage areas are formed through the adjacent partition plates and the area between the partition plates and the inner wall of the covering box. The outer bottom surface of the covering box is fixedly connected to a connected discharge cylinder corresponding to each storage area, and the discharge cylinder is arranged in a downward tapering manner.
[0022] As an optimized solution, rotating holes are respectively opened on the opposite end faces of the covering box, and an inlet rotating ring and an outlet rotating ring are rotatably installed in the two rotating holes respectively. The two ends of the screening cone are correspondingly fixed to the inner ends of the inlet rotating ring and the outlet rotating ring.
[0023] As an optimized solution, a gear ring is fixedly connected to the outer ring of the outlet swivel, and a bottom drive motor is fixedly connected to the outer wall of the enclosure. The output end of the bottom drive motor meshes with the gear ring through a gear.
[0024] As an optimized solution, the outer rings of the inlet swivel and the outlet swivel are respectively fixed with limiting rings that rub against the outer wall of the covered box.
[0025] Compared with the prior art, the beneficial effects of this utility model are:
[0026] By setting up a screening cone with several screening mesh areas arranged in descending order of mesh size along the narrowing direction inside the cone, the large-diameter section serves as the feed inlet and the small-diameter section as the discharge outlet. By guiding the corn kernels into the feed inlet, the rotating screening cone, under the action of the spiral guide vanes, turns the corn kernels, causing them to move along the direction from the feed inlet to the discharge outlet. The corn kernels fall into the storage area below through the screening mesh area of the corresponding particle size for collection, and are discharged through the discharge cylinder, thus achieving uniform screening of corn kernels according to particle size.
[0027] Furthermore, the alternating vibrating bars at the top of the screening cone can knock down the corn kernels trapped in the screening mesh area, which is more efficient than the traditional cleaning roller method for cleaning hard materials.
[0028] The dust is absorbed by the top dust collection hood, and the absorbed dust enters the filter bag for collection. When the filter bag is full, the filter bag can be disassembled and a new filter bag can be installed by opening the closed door. Maintenance is very convenient and reduces the difficulty of operation. Attached Figure Description
[0029] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.
[0030] Figure 1 This is a schematic diagram of the structure of this utility model;
[0031] Figure 2 This is a schematic diagram of the buffer structure of this utility model;
[0032] Figure 3 This is a schematic diagram of the structure of the support cylinder of this utility model.
[0033] In the diagram: 1-Covering box; 2-Screening cone; 3-Divider plate; 4-Storage area; 5-Outlet cylinder; 6-Screening mesh area; 7-Spiral guide vane; 8-Inlet rotating ring; 9-Outlet rotating ring; 10-Support rod; 11-Vibrator bar; 12-Crankshaft; 13-Top drive motor; 14-Dust collection hood; 15-Air pipe; 16-Dust collection box; 17-Divider plate; 18-Through hole; 19-Support cylinder; 20-Support mesh frame; 21-Filter bag; 22-Negative pressure suction cylinder; 23-Annular connecting handle; 24-Gear ring; 25-Bottom drive motor; 26-Drive rod; 27-Guide wheel; 28-Guide cylinder; 29-Guide column; 30-Hinge seat; 31-Compression spring; 32-Rectangular guide hole; 33-Guide block. Detailed Implementation
[0034] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.
[0035] like Figures 1 to 3As shown, the grain screening device for a corn planter includes a covering box 1. A screening cone 2 is horizontally rotatable between opposite end faces of the covering box 1. Inside the screening cone 2, several screening mesh areas 6 with decreasing mesh sizes are arranged side-by-side along the narrowing direction. Spiral guide vanes 7 are fixed to the inner wall of the screening cone 2.
[0036] A support rod 10 is horizontally fixed to the area above the screening cone 2 of the covering box 1. Several guide holes are opened in parallel along the axial direction of the screening cone 2 on the support rod 10. A vibrating rod 11 is slidably installed vertically in each guide hole. The vibrating rods 11 alternately contact the outer top surface of the screening cone 2.
[0037] The lower end of the vibrating rod is fixed with a guide wheel 27 to prevent it from making hard contact with the screening cone 2.
[0038] The width of the support rod 10 is smaller than the width of the covering box 1, so it will not block the air.
[0039] A dust collection hood 14 is fixed to the outer top surface of the enclosure 1, which communicates with its inner cavity. The dust collection hood 14 is connected to a dust collection box 16 through an air pipe 15.
[0040] A partition 17 is horizontally fixed inside the dust collection box 16, dividing the dust collection box 16 into a pre-filter area and a post-filter area from top to bottom. An air pipe 15 connects to the pre-filter area. A negative pressure suction cylinder 22 connecting to the post-filter area is fixed to the outer wall of the dust collection box 16. A through hole 18 is opened on the partition 17. A support cylinder 19 covering the through hole 18 is fixed to the lower edge of the through hole 18. A filter bag 21 is detachably connected to the support cylinder 19.
[0041] A crankshaft 12 is provided for horizontal rotation between the relative inner walls of the enclosed box 1. A drive rod 26 is hinged to the eccentric end of the crankshaft 12. The swing end of the drive rod 26 is hinged to the upper end of the vibrating rod 11 through a buffer structure.
[0042] The buffer structure includes a guide tube 28 fixed to the upper end of the vibrating rod 11, and a guide post 29 is slidably provided in the guide tube 28 along the vertical direction. The upper end of the guide post 29 is hinged to the swing end of the drive rod 26 through a hinge seat 30.
[0043] The guide cylinder 28 has a rectangular guide hole 32 along the axial direction. A guide block 33 is fixedly connected to the side wall of the guide post 29 and is slidably constrained in the rectangular guide hole 32. A stop ring is fixedly connected to the outer wall of the guide post 29. A compression spring 31 is fitted on the guide post 29. The two ends of the compression spring 31 abut against the stop ring and the upper end of the guide cylinder 28, respectively.
[0044] A top drive motor 13, which drives the crankshaft 12 to rotate, is fixed to the outer wall of the housing 1.
[0045] The lower end of the support cylinder 19 is fixedly connected to a support mesh frame 20 located inside the filter bag 21 to prevent the filter bag 21 from shrinking under negative pressure.
[0046] An annular connecting handle 23 is fixedly connected to the outer wall of the support cylinder 19 near the upper end. The upper end of the filter bag 21 is clamped to the annular connecting handle 23 using a clamp.
[0047] An operation hole is provided on the side wall of the dust collection box 16, and a closed door with an on / off control hole is hinged to the outer wall of the dust collection box 16.
[0048] The inner bottom surface of the covering box 1 is fixedly connected to the adjacent screening mesh area 6 with a partition plate 3, and several storage areas 4 are formed through the adjacent partition plates 3 and the area between the partition plates 3 and the inner wall of the covering box 1. The outer bottom surface of the covering box 1 is fixedly connected to each storage area 4 with a connected discharge cylinder 5, and the discharge cylinder 5 is set downward in a tapering manner.
[0049] Rotary holes are respectively opened on the opposite end faces of the casing 1. An inlet rotating ring 8 and an outlet rotating ring 9 are respectively rotatably installed in the two rotating holes. The two ends of the screening cone 2 are respectively fixed to the inner ends of the inlet rotating ring 8 and the outlet rotating ring 9.
[0050] A gear ring 24 is fixedly connected to the outer ring of the outlet swivel 9, and a bottom drive motor 25 is fixedly connected to the outer wall of the casing 1. The output end of the bottom drive motor 25 meshes with the gear ring 24 through a gear.
[0051] The outer rings of the inlet swivel 8 and the outlet swivel 9 are respectively fixed with limiting rings that rub against the outer wall of the casing 1.
[0052] The working principle of this device is as follows:
[0053] By setting a screening cone 2, and having several screening mesh areas 6 arranged in a decreasing order along the narrowing direction inside the screening cone 2, the large diameter section is used as the feed inlet and the small diameter section as the discharge outlet. By guiding the corn kernels into the feed inlet, the screening cone 2 rotates, and the corn kernels are turned over by the spiral guide vanes 7, causing them to move along the direction from the feed inlet to the discharge outlet. The corn kernels will fall into the storage area 4 below through the screening mesh area 6 of the corresponding particle size for collection, and then be discharged through the discharge cylinder 5, thus achieving uniform screening of corn kernels according to particle size.
[0054] Furthermore, the alternating vibrating bars 11 at the top of the screening cone 2 knock down the corn kernels trapped in the screening mesh area 6, which is more efficient than the traditional cleaning roller method for cleaning hard materials.
[0055] The dust is absorbed by the dust collection hood 14 on top, and the absorbed dust enters the filter bag 21 for collection. When the filter bag 21 is full, the filter bag 21 can be disassembled and a new filter bag 21 can be installed by opening the closed door. The maintenance is very convenient and the operation difficulty is reduced.
[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.
Claims
1. A grain screening device for a corn planter, characterized in that: The device includes a covering box (1), and a screening cone (2) is horizontally rotatably arranged between the opposite end faces of the covering box (1). Several screening mesh areas (6) with decreasing mesh size are arranged side by side along the narrowing direction inside the screening cone (2). Spiral guide vanes (7) are fixed to the inner wall of the screening cone (2). The covering box (1) is horizontally fixed with a support rod (10) in the area above the screening cone (2). Several guide holes are arranged in parallel along the axial direction of the screening cone (2) on the support rod (10). A vibrating rod (11) is slidably arranged vertically in each guide hole. The vibrating rods (11) alternately contact the outer top surface of the screening cone (2).
2. The rice grain screening device for a corn planter according to claim 1, characterized in that: The outer top surface of the enclosed box (1) is fixed with a dust collection hood (14) that communicates with its inner cavity. The dust collection hood (14) is connected to a dust collection box (16) through an air pipe (15).
3. The rice grain screening device for a corn planter according to claim 2, characterized in that: A partition (17) is horizontally fixed inside the dust collection box (16), and the dust collection box (16) is divided into a pre-filter area and a post-filter area from top to bottom by the partition (17). The air pipe (15) connects to the pre-filter area. A negative pressure suction cylinder (22) connecting to the post-filter area is fixed to the outer wall of the dust collection box (16). A through hole (18) is opened on the partition (17). A support cylinder (19) covering the through hole (18) is fixed to the lower edge of the through hole (18). A filter bag (21) is detachably connected to the support cylinder (19).
4. The rice grain screening device for a corn planter according to claim 3, characterized in that: A crankshaft (12) is provided for horizontal rotation between the relative inner walls of the encased box (1). A drive rod (26) is hinged to the eccentric end of the crankshaft (12). The swing end of the drive rod (26) is hinged to the upper end of the vibrating rod (11) through a buffer structure.
5. The rice grain screening device for a corn planter according to claim 4, characterized in that: The buffer structure includes a guide tube (28) fixed to the upper end of the vibrating rod (11), and a guide post (29) is slidably provided in the guide tube (28) along the vertical direction. The upper end of the guide post (29) is hinged to the swing end of the drive rod (26) through a hinge seat (30).
6. The rice grain screening device for a corn planter according to claim 5, characterized in that: The guide cylinder (28) has a rectangular guide hole (32) along the axial direction. A guide block (33) is fixedly connected to the side wall of the guide post (29) and is slidably constrained in the rectangular guide hole (32). A stop ring is fixedly connected to the outer wall of the guide post (29). A compression spring (31) is fitted on the guide post (29). The two ends of the compression spring (31) abut against the stop ring and the upper end of the guide cylinder (28), respectively.
7. The rice grain screening device for a corn planter according to claim 6, characterized in that: The support cylinder (19) has an annular connecting handle (23) fixed to the outer wall near the upper end. The upper end of the filter bag (21) is fastened to the annular connecting handle (23) by means of a clamp.
8. The rice grain screening device for a corn planter according to claim 7, characterized in that: An operation hole is provided on the side wall of the dust collection box (16), and a closed door that opens and closes the operation hole is hinged on the outer wall of the dust collection box (16).
9. The rice grain screening device for a corn planter according to claim 8, characterized in that: The inner bottom surface of the covering box (1) is fixedly connected to the adjacent screening mesh area (6) with a partition plate (3), and a number of storage areas (4) are formed through the adjacent partition plates (3) and the area between the partition plates (3) and the inner wall of the covering box (1). The outer bottom surface of the covering box (1) is fixedly connected to each storage area (4) with a connected discharge cylinder (5), and the discharge cylinder (5) is arranged in a downward tapering manner.
10. The rice grain screening device for a corn planter according to claim 9, characterized in that: Rotary holes are respectively opened on the opposite end faces of the covering box (1), and an inlet rotating ring (8) and an outlet rotating ring (9) are respectively rotatably installed in the two rotating holes. The two ends of the screening cone (2) are respectively fixed to the inner ends of the inlet rotating ring (8) and the outlet rotating ring (9).