Crop seed screening device

Abstract

The utility model discloses a crop seed screening device, which belongs to the technical field of crop seeds and comprises a mounting frame, a feed hopper is fixedly connected in the mounting frame, a moving plate is slidably clamped at the bottom of the feed hopper, a connecting frame is arranged in the mounting frame and is positioned below the feed hopper, and the moving plate is slidably clamped at the bottom of the connecting frame. A rotating box is arranged in the mounting frame, the connecting frame is located above the rotating box, a discharging port is fixedly connected to the bottom of the rotating box, and the seed screening device further comprises a vibration assembly and a reciprocating rotating assembly. Large or heavy impurities and seeds which do not meet requirements are effectively separated through the vibration effect, the screening efficiency is improved, the reciprocating rotating assembly drives the rotating box to swing in a reciprocating mode, the seeds on the second filter screen are subjected to force in different directions, finer secondary screening is achieved, and the screening effect is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of crop seeds, and more specifically, to a screening device for crop seeds. Background Art

[0002] Crop seeds are crucial production materials in agricultural production. It refers to planting materials or propagation materials such as grains, fruits, roots, stems, seedlings, buds, leaves, flowers, etc. used for agricultural and forestry production. These seeds can germinate after sowing, grow into new plants, and then bear fruits or produce seeds to complete the life cycle of crops. There are many types of crop seeds, including but not limited to seeds of crops such as wheat, rice, corn, soybean, cotton, rape, potato, peanut, vegetables, fruit trees, etc. The patent with the publication number CN221017331U discloses a screening device for crop seed production, including two groups of support legs, and a screening and separating mechanism is jointly arranged above the two groups of support legs; the screening and separating mechanism includes a main body of a screening frame, the upper surface of each group of support legs is fixedly connected to the bottom surface of the main body of the screening frame, and two groups of buffer springs are fixedly connected to the inner wall of the main body of the screening frame. This screening device for crop seed production can efficiently screen different types of crop seeds through the main body of the screening frame, buffer springs, controller device main body, filter frame, discharge frame, vibration motor main body, filter screen, and feeding frame, effectively avoiding the problem of blockage during the screening of crop seeds. By using the filter screen and the filter frame, when screening different types of crop seeds, the staff can replace different filter screens according to the different types of crop seeds, further expanding the scope of use of the device.

[0003] Although this device has many beneficial effects, there are still the following problems: Although the staff of this screening device can replace different filter screens according to the different types of crop seeds, during the screening process of crop seeds, only the filter frame is used for screening, and the screening of crop seeds is not meticulous enough. Insufficiently meticulous screening is likely to cause various impurities to be mixed into the seeds. These impurities will not only reduce the purity of the seeds but may also carry germs and pests, having an adverse impact on the preservation of the seeds and the growth after sowing. Summary of the Invention

[0004] (I) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the utility model provides a screening device for crop seeds, which solves the above problems.

[0006] (II) Technical Solutions

[0007] To achieve the above-mentioned purpose, the present utility model provides the following technical solutions: A crop seed screening device, including a mounting frame, inside which there is fixedly connected a feed hopper. The bottom of the feed hopper is slidably clamped with a moving plate. Inside the mounting frame, there is a connecting frame located below the feed hopper. Inside the mounting frame, there is a rotating box, and the connecting frame is located above the rotating box. The bottom of the rotating box is fixedly connected with a discharge port. It further includes:

[0008] A vibration assembly, which is located below the connecting frame and is used for initially screening crop seeds;

[0009] A reciprocating rotation assembly, which is located inside the mounting frame and is used to drive the rotating box to rotate reciprocally, thereby performing secondary screening on crop seeds.

[0010] Preferably, the vibration assembly includes a second motor and a cam. The second motor is fixedly installed on the outer surface of the mounting frame. The output end of the second motor is fixedly connected with a rotating shaft. The rotating shaft is located inside the mounting frame. The outer surface of the rotating shaft is fixedly sleeved with a plurality of equally spaced cams. The plurality of cams are movably connected to the bottom of the connecting frame.

[0011] Preferably, a first filter screen is fixedly connected inside the connecting frame. On both outer surfaces of the connecting frame, two connecting rods are rotatably connected. The bottom of each of the two connecting rods is fixedly connected with a connecting plate. Four symmetrically distributed connecting columns are fixedly connected inside the mounting frame. The outer surfaces of the four connecting columns are all sleeved with telescopic springs. The four telescopic springs are all located below the top inner walls of the two connecting plates. The four connecting columns are sleeved with the two connecting plates. The top of the end of the first filter screen is fixedly connected with a stop block.

[0012] Preferably, a second filter screen is fixedly installed inside the rotating box. The part of the rotating box below the second filter screen is conical. Two rotating shafts are rotatably connected inside the mounting frame. The outer surfaces of the two rotating shafts close to each other are rotatably connected with the rotating box. The aperture of the second filter screen is smaller than that of the first filter screen.

[0013] Preferably, the reciprocating rotation assembly includes a first gear, a rack, a connecting ring, a rotating connecting rod, and a movable column. The rack is slidably connected inside the mounting frame. The outer surface of the rack is meshed with a first gear. The first gear is fixedly connected with the adjacent rotating shaft. The outer surface of the rack is fixedly connected with a connecting ring. The inside of the connecting ring is movably connected with a movable column. The end of the movable column is fixedly connected to the outer surface of one side of the rotating connecting rod.

[0014] Preferably, a second gear is rotatably connected inside the mounting frame, a first motor is fixedly installed on the outer surface of the mounting frame, the output end of the first motor is fixedly connected to the second gear, and the other end of the second gear is fixedly connected to the rotating connecting rod.

[0015] Preferably, universal wheels with the same structure are fixedly installed at the four corners of the bottom of the mounting frame, and a handle is fixedly connected to the outer surface of the mounting frame.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the present utility model provides a crop seed screening device, which has the following beneficial effects:

[0018] This crop seed screening device initially screens the seeds by using a vibration assembly. Through the vibration effect, larger or heavier impurities and seeds that do not meet the requirements are effectively separated, improving the screening efficiency. The reciprocating rotation assembly drives the rotating box to swing reciprocally, so that the seeds on the second filter net are subjected to forces in different directions, realizing a more refined secondary screening and further improving the screening effect.

[0019] This crop seed screening device has a conical design at the bottom of the rotating box, which is convenient for the fine impurities and seeds that do not meet the requirements after screening to converge to the discharge port through the conical part and be discharged, reducing the risk of residue and blockage. The setting of the first filter net and the second filter net realizes hierarchical screening from coarse to fine, improving the screening accuracy and precision. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the present utility model;

[0021] Figure 2 is a schematic structural diagram of the second filter net of the present utility model;

[0022] Figure 3 is the present utility model Figure 1 The enlarged view of the structure at A in;

[0023] Figure 4 is a schematic structural diagram of the rotating connecting rod of the present utility model;

[0024] Figure 5 is a schematic structural diagram of the cam of the present utility model;

[0025] Figure 6 is a schematic structural diagram of the movable column of the present utility model.

[0026] In the figure: 1, mounting frame; 2, feed hopper; 3, connecting frame; 4, first filter screen; 5, rotating box; 6, discharge port; 7, universal wheel; 8, first motor; 9, second motor; 10, second filter screen; 11, first gear; 12, rack; 13, connecting ring; 14, second gear; 15, rotating connecting rod; 16, connecting rod; 17, moving plate; 18, telescopic spring; 19, cam; 20, connecting plate; 21, rotating shaft; 22, movable column. Detailed implementation mode

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0028] Please refer to Figures 1-6 , the present invention provides a technical solution:

[0029] A crop seed screening device includes a mounting frame 1. Inside the mounting frame 1, a feed hopper 2 is fixedly connected. At the bottom of the feed hopper 2, a moving plate 17 is slidably clamped. Inside the mounting frame 1, a connecting frame 3 is provided. The connecting frame 3 is located below the feed hopper 2. Inside the mounting frame 1, a rotating box 5 is provided. The connecting frame 3 is located above the rotating box 5. At the bottom of the rotating box 5, a discharge port 6 is fixedly connected. It further includes:

[0030] A vibration component, which is located below the connecting frame 3 and is used for initially screening crop seeds;

[0031] A reciprocating rotation component, which is located inside the mounting frame 1 and is used to drive the rotating box 5 to rotate reciprocally, thereby performing secondary screening on crop seeds. The crop seeds enter the connecting frame 3 through the feed hopper 2.

[0032] Further, the vibration component includes a second motor 9 and a cam 19. The second motor 9 is fixedly installed on the outer surface of the mounting frame 1. The output end of the second motor 9 is fixedly connected to a rotating shaft. The rotating shaft is located inside the mounting frame 1. On the outer surface of the rotating shaft, a plurality of equally spaced cams 19 are fixedly sleeved. The plurality of cams 19 are movably connected to the bottom of the connecting frame 3. The second motor 9 drives the rotating shaft and the plurality of cams 19 fixedly sleeved thereon to rotate. The rotation of the cam 19 continuously impacts the bottom of the connecting frame 3, generating vibration. The first filter screen 4 inside the connecting frame 3 initially screens the entering crop seeds.

[0033] Further, a first filter screen 4 is fixedly connected inside the connecting frame 3. Two connecting rods 16 are rotatably connected to the outer surfaces on both sides of the connecting frame 3. Connecting plates 20 are fixedly connected to the bottoms of the two connecting rods 16. Four symmetrically distributed connecting columns are fixedly connected inside the mounting frame 1. Telescopic springs 18 are sleeved on the outer surfaces of the four connecting columns. The four telescopic springs 18 are all located below the top inner walls of the two connecting plates 20. The four connecting columns are sleeved with the two connecting plates 20. A stopper is fixedly connected to the top of the end of the first filter screen 4. The stopper is used to prevent impurities from falling into the rotating box 5. Qualified seeds then pass through the first filter screen 4 and fall into the connecting frame 3 below and further enter the rotating box 5.

[0034] Further, a second filter screen 10 is fixedly installed inside the rotating box 5. The part of the rotating box 5 below the second filter screen 10 is conical. Two rotating shafts 21 are rotatably connected inside the mounting frame 1. The outer surfaces of the two rotating shafts 21 close to each other are rotatably connected to the rotating box 5. The aperture of the second filter screen 10 is smaller than that of the first filter screen 4. The reciprocating swing makes the seeds on the second filter screen 10 inside the rotating box 5 receive forces in different directions, realizing secondary screening. The second filter screen 10 inside the rotating box 5 performs a more refined screening on the seeds that have undergone primary screening. Due to the conical design of the bottom of the rotating box 5, the screened fine impurities and unqualified seeds converge to the discharge port 6 through the conical part and are discharged.

[0035] Further, the reciprocating rotation assembly includes a first gear 11, a rack 12, a connecting ring 13, a rotating connecting rod 15, and a movable column 22. The rack 12 is slidably connected inside the mounting frame 1. The outer surface of the rack 12 is meshed with the first gear 11. The first gear 11 is fixedly connected to the rotating shaft 21 close to it. A connecting ring 13 is fixedly connected to the outer surface of the rack 12. The movable column 22 is movably connected inside the connecting ring 13. One side surface of the rotating connecting rod 15 is fixedly connected to the end of the movable column 22. The second gear 14 further drives the rotating connecting rod 15 to rotate. The other end of the rotating connecting rod 15 moves inside the connecting ring 13 during the rotation process. Therefore, the connecting ring 13 is driven to move left and right under the rotation trajectory of the rotating connecting rod 15, and further the rack 12 moves left and right.

[0036] Further, a second gear 14 is rotatably connected inside the mounting frame 1. A first motor 8 is fixedly installed on the outer surface of the mounting frame 1. The output end of the first motor 8 is fixedly connected to the second gear 14. The second gear 14 is fixedly connected to the other end of the rotating connecting rod 15. The first motor 8 drives the second gear 14 to rotate.

[0037] Further, universal wheels 7 with the same structure are fixedly installed at the four corners of the bottom of the mounting frame 1. A handle is fixedly connected to the outer surface of the mounting frame 1. The entire screening device is moved through the universal wheels 7 at the bottom, which is convenient for use at different locations. The handle is convenient for the operator to carry and move.

[0038] Working principle: When the staff needs to use this crop seed screening device, the entire screening device is moved through the universal wheels 7 at the bottom, which is convenient for use at different locations, and the handle facilitates the operator to carry and move it. The crop seeds enter the connecting frame 3 through the feed hopper 2. When the seeds accumulate to a certain amount, the feeding speed can be controlled or the feeding can be temporarily stopped by the movable plate 17 connected by sliding and clamping. Start the second motor 9 to drive the rotating shaft and the multiple cams 19 fixedly sleeved thereon to rotate. The rotation of the cams 19 continuously impacts the bottom of the connecting frame 3, generating vibration. The first filter screen 4 inside the connecting frame 3 conducts primary screening on the incoming crop seeds. Due to the vibration effect, larger or heavier impurities and seeds that do not meet the requirements are initially separated and remain above the first filter screen 4. The stopper is used to prevent impurities from falling into the rotating box 5. The qualified seeds pass through the first filter screen 4 and fall into the lower connecting frame 3 and further enter the rotating box 5. The connecting rods 16 on both sides of the connecting frame 3 are connected to the connecting columns and the telescopic springs 18 inside the mounting frame 1 through the connecting plates 20, forming a buffer structure. This helps to reduce the impact of vibration on the overall device and at the same time ensures the stability and continuity of vibration screening. Start the first motor 8. The first motor 8 drives the second gear 14 to rotate. The second gear 14 further drives the rotating connecting rod 15 to rotate. During the rotation of the rotating connecting rod 15, it drives the movable column 22 to move inside the connecting ring 13. Therefore, under the rotation trajectory of the rotating connecting rod 15, the connecting ring 13 moves left and right, and further causes the rack 12 to move left and right. Finally, the first gear 11 will rotate reciprocally (that is, rotate in the reverse direction after rotating a certain angle). The first gear 11 is fixedly connected to the rotating shaft 21. Therefore, the rotating shaft 21 also rotates reciprocally, and further drives the rotating box 5 to swing reciprocally. This reciprocal swing makes the seeds on the second filter screen 10 inside the rotating box 5 receive forces in different directions, realizing secondary screening. The second filter screen 10 inside the rotating box 5 conducts more refined screening on the seeds that have undergone primary screening. Since the bottom of the rotating box 5 is designed in a conical shape, the screened fine impurities and seeds that do not meet the requirements are converged to the discharge port 6 through the conical part and discharged, while the qualified seeds remain above the second filter screen 10.

[0039] The above shows and describes the basic principle, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only the preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A crop seed screening device, comprising a mounting frame (1), a feed hopper (2) being fixedly connected to the interior of the mounting frame (1), a movable plate (17) being slidably engaged at the bottom of the feed hopper (2), and characterized in that: A connecting frame (3) is provided inside the mounting frame (1), and the connecting frame (3) is located below the feed hopper (2). A rotating box (5) is provided inside the mounting frame (1), and the connecting frame (3) is located above the rotating box (5). A discharge port (6) is fixedly connected to the bottom of the rotating box (5). The mounting frame (1) further comprises: A vibration assembly, located below the connecting frame (3), and used for performing primary screening of crop seeds; The reciprocating rotating assembly is located inside the mounting frame (1) and is used to drive the rotating box (5) to rotate reciprocatingly, thereby performing secondary screening on the crop seeds.

2. The crop seed screening device according to claim 1, characterized in that: The vibration component comprises a second motor (9) and a cam (19); the second motor (9) is fixedly mounted on the outer surface of the mounting frame (1); the output end of the second motor (9) is fixedly connected to a rotating shaft; the rotating shaft is located inside the mounting frame (1); a plurality of equidistantly distributed cams (19) are fixedly sleeved on the outer surface of the rotating shaft; the plurality of cams (19) are movably connected to the bottom of the connecting frame (3).

3. The crop seed screening device according to claim 1, characterized in that: The first filter screen (4) is fixedly connected to the interior of the connecting frame (3); two connecting rods (16) are rotatably connected to the outer surfaces of both sides of the connecting frame (3); the bottoms of the two connecting rods (16) are fixedly connected to connecting plates (20); the interior of the mounting frame (1) is fixedly connected to four connecting columns that are symmetrically distributed; the outer surfaces of the four connecting columns are sleeved with telescopic springs (18); the four telescopic springs (18) are located below the top inner walls of the two connecting plates (20); the four connecting columns are sleeved with the two connecting plates (20); and a stopper is fixedly connected to the top of the end of the first filter screen (4).

4. The crop seed screening device according to claim 3, characterized in that: A second filter screen (10) is fixedly mounted inside the rotating box (5); the portion of the rotating box (5) located below the second filter screen (10) is conical; two rotating shafts (21) are rotatably connected inside the mounting frame (1); the outer surfaces of the two rotating shafts (21) that are adjacent to each other are rotatably connected to the rotating box (5); and the aperture of the second filter screen (10) is smaller than the aperture of the first filter screen (4).

5. The crop seed screening device according to claim 4, characterized in that: The reciprocating rotating assembly comprises a first gear (11), a rack (12), a connecting ring (13), a rotating connecting rod (15) and a movable column (22); the interior of the mounting frame (1) is slidably connected to the rack (12); the outer surface of the rack (12) is meshingly connected to the first gear (11); the first gear (11) is fixedly connected to a rotating shaft (21) adjacent thereto; the outer surface of the rack (12) is fixedly connected to the connecting ring (13); the interior of the connecting ring (13) is movably connected to the movable column (22); and the end of the movable column (22) is fixedly connected to the outer surface of one side of the rotating connecting rod (15).

6. The crop seed screening device according to claim 5, characterized in that: A second gear (14) is rotatably connected inside the mounting frame (1), a first motor (8) is fixedly mounted on the outer surface of the mounting frame (1), an output end of the first motor (8) is fixedly connected to the second gear (14), and the second gear (14) is fixedly connected to the other end of the rotating connecting rod (15).

7. The crop seed screening device according to claim 1, characterized in that: Universal wheels (7) with the same structure are fixedly mounted at the four corners of the bottom of the mounting frame (1), and a handle is fixedly connected to the outer surface of the mounting frame (1).

Images