Adjustable corn breeding screening equipment

Abstract

The utility model discloses adjustable corn breeding screening equipment, and relates to the technical field of corn breeding, the adjustable corn breeding screening equipment comprises a rotary vibration screen, a screen mesh used for screening corn seeds is arranged in the rotary vibration screen, a plurality of mesh holes are formed in the screen mesh at equal intervals, a tray is arranged at the bottom of the screen mesh, the tray is arranged in the rotary vibration screen, and the rotary vibration screen is arranged in the rotary vibration screen. A plurality of groups of through holes are formed in the tray at equal intervals, and one group of through holes comprises large sieve holes, medium sieve holes and small sieve holes; a driving mechanism is arranged on the tray, the tray drives the screen mesh to rotate through the driving mechanism, and when the screen mesh rotates, the mesh holes are driven to be aligned with the large screen holes, the medium screen holes and the small screen holes one by one. On the premise that the screen does not need to be replaced, the discharging hole diameter of the screen is adjusted in an adjustable mode, the convenience of corn seed processing and screening operation of the rotary vibration screen is improved, the time for replacing the screen is saved, and the processing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of corn breeding, in particular to an adjustable corn breeding screening device. Background Art

[0002] Corn breeding refers to the process of improving the genetic traits of corn through genetics, molecular biology, biochemistry and other technical means to improve its yield, pest and disease resistance, adaptability and quality. Corn seed germination is a common technology in agricultural production. It can improve the germination rate of seeds and shorten the germination time, thereby increasing the yield and quality of corn. Seed screening in the corn breeding process is one of the methods of crop seed cleaning. Unselected seeds have uneven grain sizes and are often mixed with broken grains, shriveled grains, insect-damaged or moldy grains and impurities.

[0003] At present, a rotary vibrating screen is usually used to screen corn seeds. A screen for laying corn seeds is provided inside the rotary vibrating screen. The vibration of the rotary vibrating screen is used to screen out the inclusions (mud, sand and gravel, seeds of other crops, weed seeds, galls, husks, etc.), blighted grains and small seeds in the corn seeds, and select high-quality seeds with large, full and neat grains to improve the seed quality. The high-quality corn seeds are screened out for separate breeding, which improves the germination rate and plant quality in the later stage.

[0004] The rotary vibrating screen is a screening machine that uses an upright servo motor as the excitation source. Eccentric weights are installed at the upper and lower ends of the servo motor to convert the rotational motion of the servo motor into horizontal, vertical and inclined three-dimensional motion, and then transmit this motion to the screen surface for material screening.

[0005] When the existing rotary vibrating screen is used to screen corn seeds, in order to screen and remove impurities of different particle sizes and small-particle corn seeds, the screen needs to be replaced. However, when replacing the screen, it is often necessary to stop the machine, remove the existing screen and replace it with another screen with a different aperture. The screen replacement operation is time-consuming and labor-intensive, and delays the screening process. It is not convenient to adjust the aperture of the screen, which affects the convenience of the rotary vibrating screen for corn seed processing and screening operations and affects the processing efficiency. Utility Model Content

[0006] In view of the above technical problems existing in seed screening of existing corn breeding, the utility model provides an adjustable corn breeding screening device.

[0007] An adjustable corn breeding screening device comprises a rotary vibrating screen, wherein a screen for corn seed screening is arranged inside the rotary vibrating screen, wherein a plurality of mesh holes are evenly distributed on the screen, wherein a tray is arranged at the bottom of the screen, wherein the tray is arranged inside the rotary vibrating screen, and wherein a plurality of groups of perforations are evenly distributed on the tray, wherein a group of perforations comprises large screen holes, medium screen holes and small screen holes;

[0008] The tray is provided with a driving mechanism, and the tray drives the screen to rotate through the driving mechanism. When the screen rotates, the mesh holes are driven to align with the large mesh holes, the medium mesh holes and the small mesh holes one by one.

[0009] Furthermore, a slide groove is provided in the rotary vibrating screen, and the screen is rotatably connected in the slide groove.

[0010] Furthermore, the driving mechanism includes a servo motor, a driving rod and a connecting block. The servo motor is arranged at the bottom of the tray, and the servo motor shaft is passed through a preset through hole on the tray. One end of the driving rod is fixedly connected to the servo motor shaft.

[0011] Furthermore, the connecting block is arranged on one end of the driving rod, a slot fitting the connecting block is opened on one side of the screen, and the screen is clamped on the connecting block through the slot, a nut is threadedly connected to the screen, and the tail end of the nut is threadedly connected to a preset screw hole on the connecting block.

[0012] Furthermore, the aperture sizes of the large sieve holes, the medium sieve holes and the small sieve holes decrease in sequence, and the aperture sizes of the large sieve holes and the mesh holes are equal.

[0013] Furthermore, the large sieve holes, the medium sieve holes and the small sieve holes are all provided with cutting openings along the walls at one end close to the mesh holes.

[0014] Beneficial effects of the utility model:

[0015] 1. The corn seeds to be screened are laid on the sieve, and then the rotary vibrating screen is started for screening, so that the sundries or small-particle inferior seeds in the corn seeds fall into the large sieve holes on the tray through the mesh holes on the sieve, and then are screened and removed. When it is necessary to adjust the screening aperture, the servo motor is manually started to operate, so that the driving rod and the connecting block are driven to rotate through the servo motor shaft, and then the screen is driven to rotate around the slide slot, and then the mesh holes are aligned with the positions of the middle sieve holes or the small sieve holes as required, and then the servo motor is stopped, and then the middle sieve holes or the small sieve holes with an aperture smaller than the mesh holes are aligned with the mesh holes as required, so that the screening materials with smaller particles fall through them, which is convenient for meeting the use requirements of the rotary vibrating screen for corn seed screening, and then it is convenient to adjust the screen aperture without changing the screen, thereby improving the convenience of the rotary vibrating screen for corn seed processing and screening operations, saving the time for changing the screen, and improving the processing efficiency.

[0016] 2. By manually unscrewing the nut, the screen and the connecting block are unstuck, and the screen can be taken out, so that the screen can be replaced and maintained as needed, which improves the convenience of later maintenance.

[0017] 3. Through the cooperation of the cutting openings opened on the wall of the large sieve holes, the medium sieve holes and the small sieve holes, when the screen is driven to rotate, the mesh holes are displaced with the large sieve holes, the medium sieve holes and the small sieve holes respectively. Then, when the materials are accidentally stuck in the mesh holes during the interlacing process of the two or when screening corn seeds, the materials are cut by the cutting openings as the screen rotates, which is convenient for assisting the material discharge and screening, reducing the possibility of material blocking the mesh holes and improving the stability of the rotary vibrating screen operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional view of the vibrating screen.

[0019] Figure 2 A cross-sectional view of the screen.

[0020] Figure 3 for Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0021] Reference numerals

[0022] 1. Vibrating screen; 2. Screen; 3. Mesh; 4. Tray; 5. Perforation; 51. Large sieve hole; 52. Medium sieve hole; 53. Small sieve hole; 6. Driving mechanism; 61. Servo motor; 62. Driving rod; 63. Connecting block; 7. Slide; 8. Nut; 9. Cutting edge. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0024] Example

[0025] An adjustable corn breeding screening device includes a rotary vibrating screen 1, in which a circular screen 2 for corn seed screening is arranged, a slide slot 7 is provided in the rotary vibrating screen 1, and the screen 2 is rotatably connected in the slide slot 7. A plurality of circular mesh holes 3 are evenly distributed on the screen 2, and a circular tray 4 is provided at the bottom of the screen 2, and the tray 4 and the screen 2 are arranged concentrically. The tray 4 is arranged in the rotary vibrating screen 1, and a plurality of groups of perforations 5 are evenly distributed on the tray 4, and a group of perforations 5 includes a large screen hole 51, a medium screen hole 52 and a small screen hole 53, and the aperture sizes of the large screen hole 51, the medium screen hole 52 and the small screen hole 53 decrease in sequence, and the aperture size of the large screen hole 51 is equal to that of the mesh hole 3. By laying the corn seeds to be screened on the screen 2, and then starting the rotary vibrating screen 1 for screening, the impurities or small-particle inferior seeds in the corn seeds fall into the large screen hole 51 on the tray 4 through the mesh holes 3 on the screen 2, and then are screened and removed, referring to Figure 1 , Figure 2 .

[0026] The tray 4 is provided with a driving mechanism 6, and the tray 4 drives the screen 2 to rotate through the driving mechanism 6. When the screen 2 rotates, the meshes 3 are driven to align with the large screen holes 51, the medium screen holes 52 and the small screen holes 53. The driving mechanism 6 includes a servo motor 61, a driving rod 62 and a connecting block 63. The servo motor 61 is arranged at the bottom of the tray 4, and the rotating shaft of the servo motor 61 is passed through a preset through hole on the tray 4. One end of the driving rod 62 is fixedly connected to the rotating shaft of the servo motor 61. The connecting block 63 is arranged on one end of the driving rod 62. The connecting block 63 is arranged in a polygonal shape. A polygonal notch that fits the connecting block 63 is provided at the bottom of one side of the screen 2. When it is necessary to adjust the screening aperture, the servo motor 61 is manually started to operate, thereby driving the driving rod 62 and the connecting block 63 to rotate through the servo motor 61 shaft, thereby driving the screen 2 to rotate around the slide slot 7, and then aligning the mesh 3 with the middle mesh hole 52 or the small mesh hole 53 as required, and then stopping the servo motor 61, and then aligning the middle mesh hole 52 or the small mesh hole 53 with a smaller aperture than the mesh 3 with the mesh 3 as required, so that the screening material with smaller particles falls through it, which is convenient for meeting the use requirements of the rotary vibrating screen 1 for corn seed screening, and thus it is convenient to adjust the blanking aperture of the screen 2 without replacing the screen 2, thereby improving the convenience of the rotary vibrating screen 1 for corn seed processing and screening operations, saving the time for replacing the screen 2, and improving the processing efficiency. Figure 1 , Figure 2 .

[0027] The screen 2 is clamped on the connection block 63 through the slot, and a nut 8 is threadedly connected to the screen 2. The tail end of the nut 8 is threadedly connected to the screw hole preset on the connection block 63. By manually unscrewing the nut 8, the screen 2 and the connection block 63 are unblocked, and then the screen 2 is taken out, which is convenient for replacing and maintaining the screen 2 as needed, and improving the convenience of later maintenance and processing. Figure 2 , Figure 3 .

[0028] The large sieve holes 51, the medium sieve holes 52 and the small sieve holes 53 are all provided with cutting openings 9 along the wall near the mesh holes 3, and the cutting openings 9 are configured to be in the shape of a blade. Through the cooperation of the cutting openings 9 provided along the wall of the large sieve holes 51, the medium sieve holes 52 and the small sieve holes 53, when the screen 2 is driven to rotate, the mesh holes 3 are displaced and moved with the large sieve holes 51, the medium sieve holes 52 and the small sieve holes 53 respectively, and then when the two are staggered or when screening corn seeds, if there is a problem that the material is accidentally stuck in the mesh holes 3, the cutting openings 9 are used to cut the material as the screen 2 rotates, so as to assist in the screening of the material, reduce the possibility of the material blocking the mesh holes 3, and improve the operating stability of the rotary vibrating screen 1, refer to Figure 2 , Figure 3 .

[0029] Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. The technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described, or replace them in a similar way, but they will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the utility model.

Claims

1. An adjustable corn breeding screening device, comprising a rotary vibrating screen (1), wherein a screen (2) for screening corn seeds is arranged inside the rotary vibrating screen (1), wherein a plurality of mesh holes (3) are evenly distributed on the screen (2), wherein: A tray (4) is arranged at the bottom of the screen (2), the tray (4) is arranged in the rotary vibrating screen (1), and a plurality of groups of perforations (5) are arranged on the tray (4) at equal intervals, wherein one group of perforations (5) includes a large screen hole (51), a medium screen hole (52) and a small screen hole (53); The tray (4) is provided with a driving mechanism (6), and the tray (4) drives the screen (2) to rotate through the driving mechanism (6). When the screen (2) rotates, the mesh holes (3) are driven to align with the large mesh holes (51), the medium mesh holes (52) and the small mesh holes (53) one by one.

2. The adjustable corn breeding screening device according to claim 1, characterized in that: A chute (7) is provided in the rotary vibrating screen (1), and the screen (2) is rotatably connected in the chute (7).

3. The adjustable corn breeding screening device according to claim 1, characterized in that: The driving mechanism (6) comprises a servo motor (61), a driving rod (62) and a connecting block (63); the servo motor (61) is arranged at the bottom of the tray (4), and the rotating shaft of the servo motor (61) is passed through a through hole preset on the tray (4); one end of the driving rod (62) is fixedly connected to the rotating shaft of the servo motor (61).

4. The adjustable corn breeding screening device according to claim 3, characterized in that: The connecting block (63) is arranged on one end of the driving rod (62); a notch that fits the connecting block (63) is opened on one side of the screen (2); and the screen (2) is clamped on the connecting block (63) through the notch; a nut (8) is threadedly connected to the screen (2); and the rear end of the nut (8) is threadedly connected to a preset screw hole on the connecting block (63).

5. The adjustable corn breeding screening device according to claim 1, characterized in that: The aperture sizes of the large sieve holes (51), the medium sieve holes (52) and the small sieve holes (53) decrease in sequence, and the aperture size of the large sieve holes (51) is equal to that of the mesh holes (3).

6. The adjustable corn breeding screening device according to claim 5, characterized in that: The large sieve holes (51), the medium sieve holes (52) and the small sieve holes (53) are all provided with cutting openings (9) along the walls at one end close to the mesh holes (3).

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