Fresh corn seed size screening device

Abstract

The utility model relates to a fresh corn seed size screening device which comprises a base, a rotating shaft, a first cylinder and a circular plate, the rotating shaft is rotatably arranged on the base, the first cylinder is fixedly connected to the base, and the first cylinder and the rotating shaft are coaxially arranged; and the circular plate is horizontally arranged on the rotating shaft and can rotate along with the rotating shaft, the circular plate is rotationally matched with the lower end of the first cylinder, and a plurality of screen holes are formed in the circular plate. Due to the adoption of the technical scheme, part of small seeds can be screened out through the fresh corn seed size screening device, and when the screened fresh corn seeds are used for planting, weak seedlings can be reduced, and the yield of fresh corn can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural production equipment, in particular to a fresh corn seed size screening device. Background Art

[0002] Fresh corn refers to young, tender corn with a unique flavor and quality. Compared to regular corn, fresh corn has plump kernels, high nutritional value, and a pleasant taste, making it popular in the market. Therefore, large-scale fresh corn cultivation is required to meet market demand. Currently, when planting fresh corn, it is necessary to purchase fresh corn seeds. However, the size of the purchased fresh corn seeds is uneven, including many smaller ones. If the purchased fresh corn seeds are used directly for planting, many weak seedlings will grow from the smaller seeds, ultimately affecting the fresh corn yield. Utility Model Content

[0003] In view of this, the purpose of the present invention is to provide a fresh corn seed size screening device to solve the technical problem that if purchased fresh corn seeds are directly used for planting, the fresh corn yield will eventually be affected.

[0004] The utility model is achieved through the following technical solutions:

[0005] A device for screening the size of fresh corn seeds includes a base, a rotating shaft, a first cylinder and a circular plate. The rotating shaft is rotatably arranged on the base. The first cylinder is fixedly connected to the base and is arranged coaxially with the rotating shaft. The circular plate is horizontally arranged on the rotating shaft and can rotate with the rotating shaft. The circular plate is rotatably engaged with the lower end of the first cylinder. A plurality of sieve holes are provided on the circular plate.

[0006] Furthermore, a first scraper is provided in the first cylinder, one end of the first scraper is fixed on the inner wall of the first cylinder, the other end of the first scraper extends to the middle of the circular plate, the lower end of the first scraper abuts against the upper surface of the circular plate, and the first scraper is detachably fixed to the first cylinder.

[0007] Furthermore, a first discharge port is provided on the wall of the first cylinder, the lower end of the first discharge port is not higher than the upper surface of the circular plate, and a first baffle is detachably connected to the first cylinder, and the first baffle is used to close the first discharge port.

[0008] Furthermore, the base includes a material receiving hopper, the upper end of which is open, and the material receiving hopper is located directly below the circular plate. The opening size of the upper end of the material receiving hopper is not less than the size of the circular plate.

[0009] Furthermore, the receiving hopper includes a third bottom plate and a second cylinder, the lower end of the second cylinder is fixed on the third bottom plate, the second cylinder and the rotating shaft are arranged coaxially, the diameter of the second cylinder is not less than the diameter of the circular plate, and the rotating shaft is rotatably connected to the third bottom plate; a second discharge port is fixed on the side wall of the second cylinder, the lower end of the second discharge port is flush with the upper side surface of the third bottom plate, and a second baffle is detachably connected to the second cylinder, and the second baffle is used to close the second discharge port.

[0010] Furthermore, it includes a second scraper, one end of which is fixed on the outer circumference of the rotating shaft, the other end of which abuts against the inner circumference of the second cylinder, and the lower end of which abuts against the upper surface of the third bottom plate.

[0011] Furthermore, the first scraper is detachably fixedly connected to the first cylinder, a circular hole is formed in the middle of the circular plate, and a limiting groove is formed by the depression of the hole wall of the circular hole; the rotating shaft includes a first rotating shaft section and a second rotating shaft section, the first rotating shaft section is rotatably connected to the base, the diameter of the second rotating shaft section is smaller than the diameter of the first rotating shaft section, the lower end of the second rotating shaft section is fixed to the upper end of the first rotating shaft section, the lower end of the second rotating shaft section is located in the circular hole and cooperates with the circular hole, the outer circumference of the lower end of the second rotating shaft section protrudes outward to form a limiting block, and the limiting block is located in the limiting groove and cooperates with the limiting groove.

[0012] Furthermore, the circular plate is provided with a plurality of sieve hole groups, each of which includes a plurality of sieve holes evenly arranged along a circular path, the circular paths of the sieve hole groups are arranged sequentially from the inside to the outside, and the center of each circular path is located at the center of the circular plate;

[0013] It also includes a fixed seat, multiple spherical segments and multiple elastic telescopic parts. The multiple spherical segments are located above the fixed seat and correspond one-to-one to the multiple circular paths. The multiple elastic telescopic parts correspond one-to-one to the multiple spherical segments. The lower ends of the elastic telescopic parts are fixedly connected to the fixed seat, and the upper ends are fixedly connected to the bottom surfaces of the corresponding spherical segments. The elastic telescopic parts are used to extend when the corresponding spherical segments are aligned with the sieve holes on the corresponding circular paths to push the spherical segments into the sieve holes on the corresponding circular paths. The elastic telescopic parts are also used to be compressed when the spherical segments slide out of the sieve holes on the corresponding circular paths.

[0014] Furthermore, the elastic telescopic part includes a third cylinder, a sliding part and a coil spring. The third cylinder is arranged vertically and the lower end is fixed on the fixed seat. The sliding part slides in the third cylinder and the upper end is located above the third cylinder. The coil spring is located in the third cylinder and the upper end abuts the sliding part and the lower end abuts the fixed seat. The bottom surface of the spherical segment is fixed to the upper end of the sliding part.

[0015] Furthermore, it also includes a mounting bracket, a motor, a first gear and a second gear. The mounting bracket is used to support the receiving hopper to a certain height from the ground. The motor is fixed on the mounting bracket, the first gear is fixed on the output shaft of the motor, and the second gear is fixed on the rotating shaft and is arranged coaxially with the rotating shaft. The first gear and the second gear are meshed with each other.

[0016] The beneficial effects of the present invention are:

[0017] The fresh corn seed size screening device of the utility model can screen out a portion of smaller seeds. When the screened fresh corn seeds are used for planting, weak seedlings can be reduced and the yield of fresh corn can be increased.

[0018] Other advantages, objectives, and features of the present invention will be described in detail in the following description and, to some extent, will be apparent to those skilled in the art upon examination and study of the following or may be learned from practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of a preferred embodiment of the fresh corn seed size screening device of the present invention;

[0020] Figure 2 This is a partial structural diagram of a preferred embodiment of the fresh corn seed size screening device of the present invention;

[0021] Figure 3 This is a schematic diagram of the combined structure of the first cylinder, the first scraper, the first baffle, and the first discharge chute in the fresh corn seed size screening device of the present invention;

[0022] Figure 4 This is a schematic diagram of the disassembled state of the combined structure of the circular plate, the first cylinder, the first scraper, the first baffle and the first discharge chute in the fresh corn seed size screening device of the present invention;

[0023] Figure 5This is a schematic diagram of the combined structure of the mounting bracket, the base and the second baffle in the fresh corn seed size screening device of the present invention;

[0024] Figure 6 This is a schematic diagram of the disassembled state of the combined structure of the mounting bracket, the base and the second baffle in the fresh corn seed size screening device of the present invention;

[0025] Figure 7 This is a schematic diagram of the combined structure of the rotating shaft and the circular plate in the fresh corn seed size screening device of the present invention;

[0026] Figure 8 This is a schematic diagram of the disassembled state of the combined structure of the rotating shaft and the circular plate in the fresh corn seed size screening device of the present invention;

[0027] Figure 9 This is a partial structural diagram of a preferred embodiment of the fresh corn seed size screening device of the present invention;

[0028] Figure 10 This is a schematic diagram of the combined structure of the fixing seat, the spherical segment and the elastic telescopic portion in the fresh corn seed size screening device of the present invention;

[0029] Figure 11-12 All of them are structural schematic diagrams of the elastic telescopic part in the fresh corn seed size screening device of the present invention.

[0030] In the figure: base 1, upper opening 101 of the receiving hopper, receiving hopper 102, second cylinder 103, third bottom plate 104, second scraper 105, second discharge port 106, second baffle 107, second discharge chute 108, second bottom plate 109, second slot 110, mounting bracket 111, rotating shaft 2, first rotating shaft section 201, second rotating shaft section 202, first cylinder 3, circular plate 4, circular hole 401, sieve hole 402 , limiting groove 403, first scraper 5, first discharge port 6, first baffle 7, first discharge trough 8, first bottom plate 9, first slot 10, fixing seat 11, spherical segment 12, elastic telescopic part 13, third cylinder 1301, coil spring 1302, sliding part 14, cover plate 1401, fourth cylinder 1402, motor 15, first gear 16, second gear 17, connecting rod 18, limiting block 19, connecting plate 20. DETAILED DESCRIPTION

[0031] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0034] In the above description of the present invention, it should be noted that the terms "one side" and "the other side" and the like indicate positions or locations based on the positions or locations shown in the accompanying drawings, or the positions or locations in which the product of the present invention is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" and the like are used solely for distinction and should not be construed as indicating or implying relative importance.

[0035] Furthermore, the term "identical" and similar terms do not necessarily require that the components be absolutely identical; slight variations are permitted. The term "perpendicular" simply refers to the positional relationship between components being more perpendicular than "parallel," not that the structure must be perfectly vertical; rather, it can be slightly tilted.

[0036] See also Figure 1-12 The utility model provides a technical solution: a fresh corn seed size screening device, including a base 1, a rotating shaft 2, a first cylinder 3 and a circular plate 4, the rotating shaft 2 is rotatably arranged on the base 1, the first cylinder 3 is fixedly connected to the base 1 and is arranged coaxially with the rotating shaft 2, the circular plate 4 is horizontally arranged on the rotating shaft 2 and can rotate with the rotating shaft 2, the circular plate 4 is rotatably fitted with the lower end of the first cylinder 3, and a plurality of sieve holes 402 are provided on the circular plate 4.

[0037] Before using purchased fresh corn seeds for planting, the purchased fresh corn seeds are first screened using the fresh corn seed size screening device of the utility model.

[0038] When using the fresh corn seed size screening device of the present invention to screen fresh corn seeds, the purchased fresh corn seeds are poured onto the circular plate 4, and then the rotating shaft 2 is rotated on the base 1. The rotating shaft 2 drives the circular plate 4 to rotate in the first cylinder 3. During the rotation of the circular plate 4, a tool can also be used to stir the fresh corn seeds on the circular plate 4. During the rotation of the circular plate 4, the multiple sieve holes 402 on the circular plate 4 can screen the fresh corn seeds. Specifically, fresh corn seeds larger than the sieve holes 402 on the circular plate 4 will remain on the circular plate 4, and fresh corn seeds smaller than the sieve holes 402 on the circular plate 4 can fall through the multiple sieve holes 402 on the circular plate 4. As for the size of the sieve holes 402, it can be reasonably set according to the screening criteria.

[0039] The fresh corn seed size screening device of the present invention can screen out some smaller seeds, thereby reducing weak seedlings when using the screened fresh corn seeds for planting, thereby increasing the yield of fresh corn. The cylinder can block the fresh corn seeds on the circular plate 4, preventing the fresh corn seeds on the circular plate 4 from falling off the edge of the circular plate 4.

[0040] In this embodiment: a first scraper 5 is provided in the first cylinder 3, one end of the first scraper 5 is fixed on the inner wall of the first cylinder 3, and the other end of the first scraper 5 extends to the middle of the circular plate 4. The lower end of the first scraper 5 abuts against the upper surface of the circular plate 4, and the first scraper 5 is detachably fixed to the first cylinder 3.

[0041] During the rotation of the circular plate 4, the circular plate 4 rotates relative to the first cylinder 3 and the first scraper 5. The first scraper 5 can scrape the fresh corn seeds on the circular plate 4, preventing the fresh corn seeds from being relatively stationary relative to the circular plate 4. This allows smaller seeds on the first scraper 5 to fall through the multiple sieve holes 402 on the circular plate 4 more quickly, thereby improving the efficiency of screening out smaller fresh corn seeds.

[0042] In this embodiment: a first discharge port 6 is provided on the wall of the first cylinder 3, and the lower end of the first discharge port 6 is not higher than the upper surface of the circular plate 4; a first baffle 7 is detachably connected to the first cylinder 3, and the first baffle 7 is used to close the first discharge port 6.

[0043] During the process of screening fresh corn seeds using the fresh corn seed size screening device of the present invention, the first baffle 7 is located on the first cylinder 3, and the first discharge port 6 is closed by the first baffle 7. At this time, the fresh corn seeds on the cylinder 4 cannot be discharged from the first discharge port 6.

[0044] After the fresh corn seeds are screened, the first baffle 7 is removed from the first cylinder 3. At this time, the first discharge port 6 is in an open state, and the fresh corn seeds on the circular plate 4 can be cleaned to the first discharge port 6. The fresh corn seeds on the circular plate 4 can be pushed out of the first discharge port 6 into a container. This makes it more convenient to discharge the fresh corn seeds on the circular plate 4.

[0045] In this embodiment: a first discharge trough 8 is provided on the first cylinder 3 at a position corresponding to the first discharge port 6, and the first discharge trough 8 includes a first bottom plate 9 and two first side plates protruding upward from the two edges of the first bottom plate 9, the upper side surface of the first bottom plate 9 is not higher than the upper side surface of the circular plate 4, one end of the first bottom plate 9 is fixedly connected to the bottom wall position of the first cylinder 3 corresponding to the first discharge port 6, and the other end of the first bottom plate 9 opposite to the one end extends back to the inner cavity of the first cylinder 3, and the two first side plates of the first discharge trough 8 are fixedly connected to the positions of the two vertical side walls of the first cylinder 3 corresponding to the first discharge port 6 respectively.

[0046] A first slot 10 is provided on the first side plate, the upper end of the first slot 10 passes through the upper end surface of the first side plate, the lower end of the first slot 10 is flush with the upper side surface of the first bottom plate 9, and the thickness of the first slot 10 matches the first baffle 7.

[0047] Insert the first baffle 7 into the first slot 10 from the upper end thereof, and support the lower end of the first baffle 7 on the upper side of the first bottom plate 9. The first baffle 7 can then be connected to the first discharge chute 8. The first baffle 7 can also be connected to the first cylinder 3 through the first discharge chute 8. Move the first baffle 7 upward and pull it out of the first slot 10. The first baffle 7 can then be removed from the first discharge chute 8 and the first cylinder 3. With this structure, the first baffle 7 can be detachably connected to the first cylinder 3.

[0048] In this embodiment, the base 1 includes a receiving hopper 102 with an upper opening 101 . The receiving hopper 102 is located directly below the circular plate 4 , and the size of the upper opening 101 of the receiving hopper is not less than the size of the circular plate 4 .

[0049] During the process of screening fresh corn seeds by the fresh corn seed size screening device of the present invention, the smaller fresh corn seeds falling from the sieve holes 402 can fall into the receiving hopper 102 , making it convenient to collect the fresh corn seeds falling from the sieve holes 402 .

[0050] In this embodiment: the receiving hopper 102 includes a third bottom plate 104 and a second cylinder 103, the lower end of the second cylinder 103 is fixed on the third bottom plate 104, the second cylinder 103 is coaxially arranged with the rotating shaft 2, the diameter of the second cylinder 103 is not less than the diameter of the circular plate 4, and the rotating shaft 2 is rotatably connected to the third bottom plate 104; a second discharge port 106 is fixed on the side wall of the second cylinder 103, the lower end of the second discharge port 106 is flush with the upper side surface of the third bottom plate 104, and a second baffle 107 is detachably connected to the second cylinder 103, and the second baffle 107 is used to close the second discharge port 106.

[0051] During the process of screening fresh corn seeds using the fresh corn seed size screening device of the present invention, the second baffle 107 is located on the second cylinder 103, and the second discharge port 106 is closed by the second baffle 107. At this time, the fresh corn seeds in the second cylinder 103 cannot be discharged from the second discharge port 106.

[0052] After the fresh corn seeds are screened, the second baffle 107 is removed from the second cylinder 103. At this point, the second discharge port 106 is open, allowing the fresh corn seeds on the third bottom plate 104 to be swept to the second discharge port 106 and then pushed out of the second discharge port 106 into another container. This makes it easier to discharge the fresh corn seeds from the second cylinder 103.

[0053] In this embodiment, a hole is provided on the third base plate 104, and a bearing is fixed in the hole. The outer ring of the bearing cooperates with the hole, and the lower end of the rotating shaft 2 is fixed in the bearing hole of the bearing. With this structure, the rotating shaft 2 can be rotatably connected to the third base plate 104, and the rotating shaft 2 can be rotatably set on the base 1.

[0054] In this embodiment, a second discharge trough 108 is provided on the second cylinder 103 at a position corresponding to the second discharge port 106. The second discharge trough 108 includes a second bottom plate 109 and two second side plates protruding upward from the two edges of the second bottom plate 109. The upper side surface of the second bottom plate 109 is flush with the upper side surface of the third bottom plate 104. One end of the second bottom plate 109 is fixedly connected to the bottom wall position of the second cylinder 103 corresponding to the second discharge port 106. The other end of the second bottom plate 109 opposite to the one end extends back to the inner cavity of the second cylinder 103. The two second side plates of the second discharge trough 108 are fixedly connected to the positions of the two vertical side walls of the second cylinder 103 corresponding to the second discharge port 106 respectively.

[0055] A second slot 110 is provided on the second side plate, the upper end of the second slot 110 passes through the upper end surface of the second side plate, the lower end of the second slot 110 is flush with the upper side surface of the second bottom plate 109, and the thickness of the second slot 110 matches the second baffle 107.

[0056] Insert the second baffle 107 from the upper end of the second slot 110 into the second slot 110, with the lower end of the second baffle 107 supported on the upper side of the second bottom plate 109. This allows the second baffle 107 to be connected to the second discharge chute 108 and, in turn, to the second cylinder 103 via the second discharge chute 108. Move the second baffle 107 upward and remove it from the second slot 110. This allows the second baffle 107 to be removed from the second discharge chute 108 and, in turn, from the second cylinder 103. With this structure, the second baffle 107 is detachably connected to the second cylinder 103.

[0057] In this embodiment, a plurality of connecting rods 18 are fixedly provided on the second cylinder 103, and the first cylinder 3 is fixedly connected to the plurality of connecting rods 18, that is, the first cylinder 3 is fixedly connected to the second cylinder 103 via the plurality of connecting rods 18. With this structure, the first cylinder 3 can be fixedly connected to the receiving hopper 102, and the first cylinder 3 can also be fixedly connected to the base 1.

[0058] In this embodiment, a second scraper 105 is also included, one end of which is fixed to the outer circumference of the rotating shaft 2, the other end of the second scraper 105 abuts against the inner circumference of the second cylinder 103, and the lower end of the second scraper 105 abuts against the upper surface of the third bottom plate 104.

[0059] After the fresh corn seeds are screened, when it is necessary to discharge the fresh corn seeds in the receiving hopper 102, the rotating shaft 2 is continued to rotate, and the rotating shaft 2 drives the second scraper 105 to rotate. During the rotation of the second scraper 105, the second scraper 105 can collect the fresh corn seeds scattered on the third bottom plate 104. Finally, the other end of the second scraper 105 is stopped at an edge of the second discharge port 106, so that the collected fresh corn seeds face the second discharge port 106, and then the collected fresh corn seeds are pushed toward the second discharge port 106, and the fresh corn seeds can be discharged from the second discharge port 106, which is more convenient when discharging the fresh corn seeds in the receiving hopper 102.

[0060] In this embodiment: the first scraper 5 is detachably fixedly connected to the first cylinder 3; a circular hole 401 is formed in the middle of the circular plate 4, and a limiting groove 403 is formed by a depression in the hole wall of the circular hole 401; the rotating shaft 2 includes a first rotating shaft section 201 and a second rotating shaft section 202, the first rotating shaft section 201 is rotatably connected to the base 1, the diameter of the second rotating shaft section 202 is smaller than the diameter of the first rotating shaft section 201, the lower end of the second rotating shaft section 202 is fixed to the upper end of the first rotating shaft section 201, the lower end of the second rotating shaft section 202 is located in the circular hole 401 and cooperates with the circular hole 401, the outer circumference of the lower end of the second rotating shaft section 202 protrudes outward to form a limiting block 19, and the limiting block 19 is located in the limiting groove 403 and cooperates with the limiting groove 403.

[0061] Under the cooperation of the limiting block 19 and the limiting groove 403 , the rotating shaft 2 is rotated, and the circular plate 4 can rotate along with the rotating shaft 2 .

[0062] When producing the fresh corn seed size screening device of the present invention, multiple circular plates 4 can be equipped, and the sieve holes 402 of the multiple circular plates 4 are made to have different sizes. The size of the sieve hole 402 on each circular plate 4 corresponds to a screening standard.

[0063] When the screening criteria change, the first scraper 5 can be removed from the first cylinder 3, freeing the circular plate 4 from the obstruction of the first scraper 5. At this point, the circular plate 4 can be moved upward on the second rotating shaft segment 202, ultimately freeing it from the upper end of the second rotating shaft segment 202. The ability to remove one circular plate 4 from the rotating shaft 2 and replace it with another one having mesh holes 402 of a different size expands the applicability of the fresh corn seed size screening device of the present invention.

[0064] In this embodiment, the fresh corn seed size screening device described in the present invention further includes a connecting plate 20 and a plurality of bolts. The connecting plate 20 is located within the first cylinder 3 and abuts against the wall of the first cylinder 3. The connecting plate 20 is provided with a plurality of screw holes. A through hole is provided on the wall of the first cylinder 3 at a position corresponding to each of the screw holes. The plurality of bolts correspond one-to-one with the plurality of through holes. The bolts sequentially pass through the corresponding through holes and are screwed into the corresponding screw holes. The first scraper 5 is fixedly connected to the connecting plate 20. In this structure, the connecting plate 20 is connected to the first cylinder 3, and the first scraper 5 is connected to the first cylinder 3 via the connecting plate 20.

[0065] When the first scraper 5 needs to be removed from the first cylinder 3, the corresponding bolts are rotated in the respective screw holes until each bolt is unscrewed from the corresponding screw hole. At this time, the connecting plate 20 can be removed from the first cylinder 3, and the first scraper 5 can be removed from the first cylinder 3. With this structure, the first scraper 5 is detachably fixed to the first cylinder 3.

[0066] In this embodiment, the circular plate 4 is provided with a plurality of sieve hole groups, each of which includes a plurality of sieve holes 402 evenly arranged along a circular path. The circular paths of the sieve hole groups are arranged sequentially from the inside to the outside. Here, "from the inside to the outside" refers to the direction from the center of the circular plate 4 to the edge of the circular plate 4. The center of each circular path is located at the center of the circular plate 4.

[0067] The fresh corn seed size screening device of the present invention also includes a fixed seat 11, a plurality of spherical segments 12, and a plurality of elastically retractable portions 13. Specifically, in this embodiment, the spherical segments 12 are the smaller of two parts of a sphere divided by a plane. The plurality of spherical segments 12 are located above the fixed seat 11 and correspond one-to-one with the plurality of circular paths. Here, the spherical segments 12 corresponding to the circular paths mean that the projection of the top of the spherical segment 12 onto the plane of the circular path lies on the circular path. The plurality of elastically retractable portions 13 correspond one-to-one with the plurality of spherical segments 12. The lower ends of the elastically retractable portions 13 are fixedly connected to the fixed seat 11, and the upper ends are fixedly connected to the bottom surfaces of the corresponding spherical segments 12. The elastically retractable portions 13 are configured to extend when the corresponding spherical segment 12 is aligned with the corresponding sieve hole 402 on the circular path, thereby pushing the spherical segment 12 into the corresponding sieve hole 402. The elastically retractable portions 13 are also configured to be compressed when the spherical segment 12 slides out of the sieve hole 402 on the circular path.

[0068] Since each of the sieve hole groups includes a plurality of the sieve holes 402 evenly arranged along a circular path, the circular paths of the sieve hole groups are arranged in sequence from the inside to the outside, the center of each circular path is located at the center of the circular plate 4, and the plurality of spherical segments 12 are located above the fixing seat 11 and correspond one-to-one to the plurality of circular paths. During the rotation of the circular plate 4 with the rotating shaft 2, the sieve holes 402 on the circular path make circular motion along the corresponding circular path, and each sieve hole 402 on the circular path can be aligned with and detached from the corresponding spherical segment 12.

[0069] When a sieve hole 402 on the circular path is aligned with the corresponding spherical segment 12, the elastic telescopic portion 13 extends to push the spherical segment 12 into the sieve hole 402. At this time, the spherical segment 12 can push the fresh corn seeds blocking the sieve hole 402 upward. When the fresh corn seed size screening device of the present invention is used to screen fresh corn seeds, the possibility of the sieve hole 402 being blocked can be reduced.

[0070] When one sieve hole 402 on the circular path is separated from the corresponding spherical segment 12, the spherical segment 12 slides out of the sieve hole 402 and abuts against the bottom surface of the circular plate 4, compressing the elastic portion 13. When the spherical segment 12 aligns with another sieve hole 402 on the corresponding circular path, the elastic portion 13 extends again to push the spherical segment 12 into the other sieve hole 402.

[0071] In this embodiment: the elastic telescopic part 13 includes a third cylinder 1301, a sliding member 14 and a coil spring 1302, the third cylinder 1301 is arranged vertically and the lower end is fixed on the fixed seat 11, the sliding member 14 is slidably fitted in the third cylinder 1301 and the upper end is located above the third cylinder 1301, the coil spring 1302 is located in the third cylinder 1301 and the upper end abuts the sliding member 14 and the lower end abuts the fixed seat 11, and the bottom surface of the spherical segment 12 is fixed to the upper end of the sliding member 14.

[0072] When the sieve holes 402 on the circular path are aligned with the corresponding spherical segments 12, the coil spring 1302 pushes the sliding member 14 upward, and the sliding member 14 pushes the corresponding spherical segments 12 upward. With this structure, the elastically retractable portion 13 can extend when the corresponding spherical segment 12 is aligned with the corresponding sieve hole 402 on the circular path, thereby pushing the spherical segment 12 into the corresponding sieve hole 402.

[0073] When the sieve hole 402 on the circular path is separated from the corresponding spherical segment 12, the lower edge of the sieve hole 402 can press the spherical surface of the corresponding spherical segment 12, so that the spherical segment 12 can slide downward from the sieve hole 402 and press the sliding member 14 downward. The sliding member 14 moves downward and compresses the coil spring 1302. With this structure, the elastic expansion portion 13 can be compressed when the spherical segment 12 slides out of the sieve hole 402 on the corresponding circular path.

[0074] In this embodiment, the sliding member 14 comprises a fourth cylinder 1402 and a cover plate 1401. The upper side of the fourth cylinder 1402 is fixedly connected to the lower side of the cover plate 1401. The size of the cover plate 1401 is not smaller than that of the fourth cylinder 1402. The fourth cylinder 1402 fits within the inner cavity of the third cylinder 1301. The upper side of the cover plate 1401 is fixedly connected to the bottom surface of the spherical segment 12. The coil spring 1302 is located within the fourth cylinder 1402, with the upper end of the fourth cylinder 1402 abutting against the lower side of the cover plate 1401. With this structure, the sliding member 14 is dynamically engaged within the third cylinder 1301.

[0075] In this embodiment, it also includes a mounting bracket 111, a motor 15, a first gear 16 and a second gear 17. The mounting bracket 111 is used to support the receiving hopper 102 to a certain height above the ground. The motor 15 is fixed on the mounting bracket 111, the first gear is fixed on the output shaft of the motor 15, and the second gear 17 is fixed on the rotating shaft 2 and is arranged coaxially with the rotating shaft 2. The first gear 16 and the second gear 17 are meshed with each other.

[0076] The model of the motor 15 can be a gear motor of MCN-NF05-28. When the motor 15 is started, the motor 15 drives the first gear 16 to rotate, and the first gear 16 drives the second gear 17 to rotate. The second gear 17 can drive the rotating shaft 2 to rotate. With this structure, there is no need to use manpower to rotate the rotating shaft 2, which is more convenient and labor-saving when rotating the rotating shaft 2.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A device for screening the size of fresh corn seeds, characterized by: The invention comprises a base (1), a rotating shaft (2), a first cylinder (3) and a circular plate (4); the rotating shaft (2) is rotatably arranged on the base (1); the first cylinder (3) is fixedly connected to the base (1) and is arranged coaxially with the rotating shaft (2); the circular plate (4) is horizontally arranged on the rotating shaft (2) and can rotate with the rotating shaft (2); the circular plate (4) is rotatably fitted with the lower end of the first cylinder (3); and a plurality of sieve holes (402) are provided on the circular plate (4).

2. The fresh corn seed size screening device according to claim 1, characterized in that: A first scraper (5) is provided in the first cylinder (3), one end of the first scraper (5) is fixed on the inner wall of the first cylinder (3), the other end of the first scraper (5) extends to the middle of the circular plate (4), the lower end of the first scraper (5) abuts against the upper surface of the circular plate (4), and the first scraper (5) is detachably fixed to the first cylinder (3).

3. The fresh corn seed size screening device according to claim 1, characterized in that: A first discharge port (6) is provided on the wall of the first cylinder (3), the lower end of the first discharge port (6) is not higher than the upper surface of the circular plate (4), and a first baffle (7) is detachably connected to the first cylinder (3), and the first baffle (7) is used to close the first discharge port (6).

4. The fresh corn seed size screening device according to claim 1, characterized in that: The base (1) comprises a receiving hopper (102), the upper end of the receiving hopper is open (101), the receiving hopper (102) is located directly below the circular plate (4), and the size of the upper end opening (101) of the receiving hopper is not less than the size of the circular plate (4).

5. The fresh corn seed size screening device according to claim 4, characterized in that: The receiving hopper (102) includes a third bottom plate (104) and a second cylinder (103), the lower end of the second cylinder (103) is fixed on the third bottom plate (104), the second cylinder (103) is coaxially arranged with the rotating shaft (2), the diameter of the second cylinder (103) is not less than the diameter of the circular plate (4), and the rotating shaft (2) is rotatably connected to the third bottom plate (104); a second discharge port (106) is fixed on the side wall of the second cylinder (103), the lower end of the second discharge port (106) is flush with the upper side surface of the third bottom plate (104), and a second baffle (107) is detachably connected to the second cylinder (103), and the second baffle (107) is used to close the second discharge port (106).

6. The fresh corn seed size screening device according to claim 5, characterized in that: It also includes a second scraper (105), one end of which is fixed on the outer circumference of the rotating shaft (2), the other end of which abuts against the inner circumference of the second cylinder (103), and the lower end of which abuts against the upper surface of the third bottom plate (104).

7. The fresh corn seed size screening device according to claim 2, characterized in that: The first scraper (5) is detachably fixedly connected to the first cylinder (3); a circular hole (401) is formed in the middle of the circular plate (4); a limiting groove (403) is formed by a depression in the hole wall of the circular hole (401); the rotating shaft (2) comprises a first rotating shaft section (201) and a second rotating shaft section (202); the first rotating shaft section (201) is rotatably connected to the base (1); the diameter of the second rotating shaft section (202) is smaller than that of the first rotating shaft section (201). The diameter of the shaft section (201), the lower end of the second rotating shaft section (202) is fixedly arranged on the upper end of the first rotating shaft section (201), the lower end of the second rotating shaft section (202) is located in the circular hole (401) and cooperates with the circular hole (401), the outer circumference of the lower end of the second rotating shaft section (202) protrudes outward to form a limiting block (19), and the limiting block (19) is located in the limiting groove (403) and cooperates with the limiting groove (403).

8. The fresh corn seed size screening device according to claim 1, characterized in that: The circular plate (4) is provided with a plurality of sieve hole (402) groups, each of the sieve hole (402) groups includes a plurality of sieve holes (402) evenly arranged along a circular path, the circular paths of the sieve hole (402) groups are arranged sequentially from the inside to the outside, and the center of each circular path is located at the center of the circular plate (4); The invention also includes a fixed seat (11), a plurality of spherical segments (12) and a plurality of elastic telescopic parts (13). The plurality of spherical segments (12) are located above the fixed seat (11) and correspond one-to-one with the plurality of circular paths. The plurality of elastic telescopic parts (13) correspond one-to-one with the plurality of spherical segments (12). The lower ends of the elastic telescopic parts (13) are fixedly connected to the fixed seat (11), and the upper ends are fixedly connected to the bottom surfaces of the corresponding spherical segments (12). The elastic telescopic parts (13) are used to extend when the corresponding spherical segments (12) are aligned with the sieve holes (402) on the corresponding circular paths, so as to push the spherical segments (12) into the sieve holes (402) on the corresponding circular paths. The elastic telescopic parts (13) are also used to be compressed when the spherical segments (12) slide out of the sieve holes (402) on the corresponding circular paths.

9. The fresh corn seed size screening device according to claim 8, characterized in that: The elastic telescopic portion (13) includes a third cylinder (1301), a sliding member (14) and a coil spring (1302). The third cylinder (1301) is arranged vertically and its lower end is fixed on the fixed seat (11). The sliding member (14) is slidably fitted in the third cylinder (1301) and its upper end is located above the third cylinder (1301). The coil spring (1302) is located in the third cylinder (1301) and its upper end abuts against the sliding member (14) and its lower end abuts against the fixed seat (11). The bottom surface of the spherical segment (12) is fixed on the upper end of the sliding member (14).

10. The fresh corn seed size screening device according to claim 4, characterized in that: The invention also includes a mounting bracket (111), a motor (15), a first gear (16) and a second gear (17), wherein the mounting bracket (111) is used to support the receiving hopper (102) to a certain height above the ground, the motor (15) is fixed on the mounting bracket (111), the first gear is fixed on the output shaft of the motor (15), the second gear (17) is fixed on the rotating shaft (2) and is arranged coaxially with the rotating shaft (2), and the first gear (16) and the second gear (17) are meshed with each other.

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