A device for rice breeding classification

Abstract

The application discloses a rice breeding grading equipment, and relates to the technical field of grading equipment.The equipment comprises a shell, a frame plate is fixed in the shell, and a first reference plate and a second reference plate are arranged at the oblique upper end and the oblique lower end bottom of the frame plate respectively.A plurality of first parallel strips and a plurality of second parallel strips are arranged below the first reference plate and the second reference plate, the second parallel strips are longer than the first parallel strips, and the first parallel strips and the second parallel strips are parallel to each other.The application selects a vibrating screen for grading screening, and the vibrating screen is provided with two groups of parallel strips, the two groups of parallel strips are not parallel to each other and are in a superimposed form, the gaps left by the two groups of parallel strips are screen holes, and the application is further provided with an adjusting structure capable of adjusting the included angle of the upper and lower adjacent parallel strips.The larger the included angle of the upper and lower adjacent parallel strips is, the smaller the area of the gap is, that is, the smaller the screen hole is, the spacing between every two adjacent gaps is not changed, and the density is increased.

Description

Technical Field

[0001] This invention relates to the field of grading equipment technology, and in particular to a grading device for rice breeding. Background Technology

[0002] Before rice planting, rice seeds need to be graded and screened. In existing technologies, drum screening machines or vibrating screening machines are generally used for rice seed grading and screening.

[0003] A search revealed Chinese patent document CN109225801B, which discloses a roller-type Panax notoginseng seed grading machine with adjustable sieve size. This patent belongs to the field of agricultural machinery technology. In this patent, the central shaft of the roller assembly in the roller section is interference-fitted to the inner rings of two bearings in the frame section. The tray is located directly below the roller assembly and is fixed to the base plate. The coupling is fixed to the right end of the central shaft of the roller assembly and the left end of the motor output shaft in the power section. The connecting plate in the power section is fixed to the right side of the vertical plate of the frame section. This invention features adjustable sieve size, fast sieve speed, high efficiency, and is conducive to large-scale industrial production of Panax notoginseng. Furthermore, it has a simple structure, is easy to operate, and is readily applicable.

[0004] Based on existing technology and the above-mentioned search findings: the aforementioned device adjusts the mesh size by staggering the two cylinders. This suggests that the mesh size of two screening plates can also be adjusted by staggering them (for example, Chinese patent CN114273014B, entitled "A Sand and Gravel Grinding and Screening Device for Construction Engineering," borrows a similar adjustment principle). While adjusting the mesh size of the drums or screen plates allows for adjustment to meet specific screening requirements, the distribution density remains unchanged. In fact, adjusting the mesh size to be smaller actually increases the area without openings. Figure 1 (For illustration purposes only), this results in a relatively sparse distribution of mesh openings, while a denser mesh distribution improves screening efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a rice breeding grading device to solve the problems mentioned in the background art.

[0006] The technical solution of the present invention is: a rice breeding grading device, including a shell, a frame plate fixed inside the shell, and a first reference plate and a second reference plate respectively provided at the upper and lower ends of the frame plate;

[0007] Below the first and second reference plates, there are multiple parallel first strips and multiple parallel second strips, with the second strips being longer than the first strips. The first strips are located above the second strips, and their middle positions overlap with the middle positions of the adjacent second strips below them. A circular hole is formed at each overlap, and a fixing post is rotatably installed within the circular hole. A horizontal plate is fixed to the bottom end of each fixing post. Sliding grooves are formed on both sides of the bottom of the frame plate. Sliding blocks are fixed at both ends of the horizontal plate, and each sliding block is slidably embedded in one of the two sliding grooves. Flat-headed posts are fixed at both ends of the first and second parallel strips. The surfaces of the first and second reference plates have a first straight groove and a second straight groove, which are parallel to each other. The two flat-headed posts of the first parallel strips are slidably positioned within the two first straight grooves, and the two flat-headed posts of the second parallel strips are slidably positioned within the two second straight grooves.

[0008] Preferably, a guide hopper is fixed to the outer side of the outer shell, the opening of the guide hopper is located at the lower end of the frame plate, a discharge hopper connected to the bottom of the outer shell is fixed to the bottom of the outer shell, and a feed hopper connected to the upper end of the outer shell with its opening facing upwards is fixed to the upper end of the outer shell.

[0009] Preferably, a support is provided at the bottom of the outer shell, a steel structure frame is provided below the support, multiple elastic structures are provided between the two sides of the support and the steel structure frame, and a vibration motor is fixed on the outside of the support.

[0010] Preferably, an adjustment mechanism is provided between the bracket and the outer shell to adjust their relative tilt.

[0011] Preferably, the elastic structure includes a return spring and two connecting seats. The two ends of the return spring are fixed to the two connecting seats respectively. One of the connecting seats is fixed to the bracket, and the other connecting seat is fixed to the outer shell. The return spring is vertically arranged relative to the ground.

[0012] Preferably, the elastic structure further includes a spring plate, the two ends of which are fixed to two connecting seats respectively.

[0013] Preferably, two side baffles are fixed to the top of the frame plate, and the two side baffles are respectively located on both sides of the frame opening.

[0014] Preferably, the first reference plate is fixed to the frame plate, and the outer side of the frame plate is provided with a plurality of parallel third straight grooves. A flat-head rod is slidably arranged inside each of the third straight grooves, and one end of each flat-head rod is fixed to the second reference plate. An adjustment structure is provided on the outer side of the outer shell. The adjustment structure includes an internal threaded sleeve and an external threaded rod. A through hole is provided on the outer side of the outer shell. One end of the external threaded rod is rotatably installed in the through hole. The outer side of the external threaded rod is threadedly installed in the internal threaded sleeve, and the internal threaded sleeve is fixed to the second reference plate.

[0015] Preferably, a horizontally arranged crossbar is fixed at one end of the outer shell adjacent to the upper oblique end of the frame plate. Both ends of the crossbar are rotatably mounted on the bracket. The adjustment mechanism includes a first gear, a second gear, a third gear, a rack, a rotating rod, and a support rod. Rotating holes are provided on both sides of the outer shell. The two ends of the rotating rod are rotatably mounted in the two rotating holes respectively. One end of the rotating rod is coaxially fixed with the first gear. The second gear is a gear with a shaft. The first gear meshes with the second gear, and the shaft of the second gear is rotatably mounted on the outer shell. The third gear is coaxially fixed with the rotating rod. The rack is fixed with the second reference plate. The rack meshes with the third gear. The two ends of the support rod are rotatably mounted on the outer side of the bracket and at the circular edge of the second gear respectively.

[0016] Preferably, the lower end of the frame opening of the frame plate is provided with an inclined surface, and the first parallel bar and the second parallel bar are both round rods.

[0017] The present invention provides an improved rice breeding grading device, which, compared with the prior art, has the following improvements and advantages:

[0018] Firstly, this invention uses vibration screening for grading and screening. This invention has two sets of parallel bars, which are not parallel to each other and are stacked one on top of the other. The gaps left by the two parallel bars are the sieve holes. This invention also has an adjustment structure for adjusting the angle between the two sets of parallel bars. The larger the angle between the two sets of parallel bars, the smaller the area of ​​the gap, that is, the smaller the sieve holes. At the same time, it ensures that the distance between each pair of adjacent gaps does not change, and the density increases accordingly.

[0019] Secondly, when the gap of the present invention is adjusted to a smaller size, the second reference plate at the lower end of the entire screening mechanism will move inward. The pull plate will use the rack to move the corresponding first gear, the first gear will move the second gear, and the second gear will use the support rod to lift the outer shell, thereby reducing the tilt angle of the screening mechanism relative to the ground and increasing the residence time of rice seeds. Because the smaller the sieve hole, the longer the residence time of the screening material needs to be, in order to improve the screening effect. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of the present invention 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. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the sieve aperture distribution after reduction in existing technology.

[0022] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0023] Figure 3 This is a first-view perspective three-dimensional structural diagram of the internal structure of the outer shell of the present invention;

[0024] Figure 4 This is a two-dimensional view of the internal structure of the outer shell of the present invention from a second perspective.

[0025] Figure 5 This is a first-view perspective three-dimensional structural diagram of the frame plate area of ​​the present invention;

[0026] Figure 6 This is a three-dimensional structural diagram of one corner of the frame plate of the present invention;

[0027] Figure 7 This is a two-dimensional structural diagram of the frame plate area of ​​the present invention from a second perspective;

[0028] Figure 8 This is a three-dimensional structural diagram of the first parallel bar, the second parallel bar, the first reference plate, and the second reference plate of the present invention.

[0029] Figure 9 This is a schematic diagram of the three-dimensional structure of the first reference plate region of the present invention;

[0030] Figure 10 This is a three-dimensional structural diagram of the first and second parallel bars of the present invention;

[0031] Figure 11 This is a simplified diagram illustrating the working principle of the gap adjustment of the present invention.

[0032] Figure 12 This is a schematic diagram of the overall hierarchical working layout of the present invention.

[0033] Figure label:

[0034] 1. Steel frame; 2. Shell; 3. Bracket; 4. Crossbar; 5. Vibrating motor; 6. Guide hopper; 7. Feed hopper; 8. Discharge hopper; 9. Support rod; 10. Rotating rod; 11. First gear; 12. Second gear; 13. Third gear; 14. Rack; 15. External threaded rod; 16. Internal threaded sleeve; 17. Horizontal plate; 18. Fixed column; 19. Second reference plate; 20. Third straight slope groove; 21. Flat-head rod; 22. Slide groove; 23. First parallel bar; 24. Second parallel bar; 25. First reference plate; 26. Inclined surface; 27. Second straight slope groove; 28. First straight slope groove; 29. ​​Flat-head column; 30. Spring plate; 31. Return spring; 32. Connecting seat; 33. Frame plate. Detailed Implementation

[0035] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] This invention provides an improved rice breeding grading device. The technical solution of this invention is as follows:

[0037] like Figures 1 to 11 As shown, this embodiment of the invention provides a rice breeding grading device, including an inclined outer shell 2, a frame plate 33 fixed inside the outer shell 2, a first reference plate 25 and a second reference plate 19 respectively provided at the upper and lower ends of the frame plate 33, the first reference plate 25 being fixed to the frame plate 33, and a plurality of parallel third straight slope grooves 20 being opened on the outer side of the frame plate 33, each of the third straight slope grooves 20 having a flat-headed rod 21 slidably arranged inside, one end of each flat-headed rod 21 being fixed to the second reference plate 19;

[0038] Below the first reference plate 25 and the second reference plate 19, there are multiple parallel first bars 23 and multiple parallel second bars 24, with the second bars 24 being longer than the first bars 23. The first bars 23 are located above the second bars 24, and their middle positions overlap with the middle positions of the adjacent second bars 24 below them. Circular holes are provided at the overlap points, and fixed posts 18 are rotatably installed within these holes. A horizontal plate 17 is fixed to the bottom end of each fixed post 18. Sliding grooves 22 are provided on both sides of the bottom of the frame plate 33. Sliding blocks are fixed to both ends of the horizontal plate 17, and the two sliding blocks are respectively slidably embedded in the two sliding grooves 22. Flat-headed posts 29 are fixed to both ends of the first bars 23 and the second bars 24. The first reference plate 25 and the second... The reference plate 19 has a first straight groove 28 and a second straight groove 27 on its surface. The first straight groove 28 and the second straight groove 27 are parallel to each other. The two flat-headed columns 29 of the first parallel bar 23 are slidably disposed in the two first straight grooves 28 respectively. The two flat-headed columns 29 of the second parallel bar 24 are slidably disposed in the two second straight grooves 27 respectively. An adjustment structure is provided on the outside of the outer shell 2. The adjustment structure includes an internal threaded sleeve 16 and an external threaded rod 15. A through hole is provided on the outside of the outer shell 2. One end of the external threaded rod 15 is rotatably installed in the through hole. The outside of the external threaded rod 15 is threadedly installed in the internal threaded sleeve 16. The internal threaded sleeve 16 is fixed to the second reference plate 19. An inclined surface 26 is provided at the lower end of the frame opening of the frame plate 33. The first parallel bar 23 and the second parallel bar 24 are both round rods.

[0039] It should be further explained that the gaps left by the interlacing of the two sets of parallel strips are sieve holes;

[0040] Further explanation is needed regarding the above: the extra portions of the first parallel bar 23 and the second parallel bar 24 are covered by both sides of the frame plate 33. The first parallel bar 23 and the second parallel bar 24 are made as thin as possible. The outer shell 2, frame plate 33, first parallel bar 23, second parallel bar 24, external thread rod 15, and internal thread sleeve 16 are customized according to the actual specifications of the equipment. The specific customization specification calculation method adopts the existing technology in this field, so it will not be described in detail.

[0041] Further explanation is needed regarding the above: As can be seen from the positional description of the first parallel bar 23 and the second parallel bar 24, all six degrees of freedom of the first parallel bar 23 and the second parallel bar 24 are restricted, so the first parallel bar 23 and the second parallel bar 24 are in a stable state. At the same time, the first parallel bar 23 and the second parallel bar 24 are inclined in the plane of the frame plate 33, and the first parallel bar 23 and the second parallel bar 24 are not parallel to each other.

[0042] It should be further explained that: the outer shell 2 and the frame plate 33 have the same slope, and the specific slope angle is set according to the actual specifications of the equipment;

[0043] It is necessary to further explain the above: the frame plate 33 has a sloping surface 26 at the lower end of the frame opening, and the second reference plate 19 also has a sloping surface 26 on the upper side. The sloping surface 26 is provided so that the seeds can roll out of the outer shell 2 using the sloping surface 26.

[0044] Further explanation is needed regarding the above: To minimize the distance between the first parallel strip 23 and the frame plate 33, both the first reference plate 25 and the second reference plate 19 can be embedded in the bottom of the frame plate 33. The bottom surfaces of both the first reference plate 25 and the second reference plate 19 are flush with the bottom surface of the frame plate 33, and the first parallel strip 23 is close to (can fit together with) the second reference plate 19. A groove is provided at the lower oblique end of this frame plate 33, such as... Figure 7 At point a, this allows the second reference plate 19 to move normally, so that the first parallel strip 23 can be closer to the frame plate 33. At the same time, more first parallel strips 23 are set to expand the distribution range of the first parallel strips 23, so that the strip network structure formed by the first parallel strips 23 can cover the entire frame opening of the frame plate 33. This makes it difficult for seeds to pass through the gap formed between the frame plate 33 and the first parallel strips 23.

[0045] It should be further explained that the external thread rod 15 uses a high-precision thread (such as a 30° wedge anti-loosening thread), which makes the adjustment more precise. At the same time, the high-precision thread is not easy to loosen during vibration.

[0046] From the above connection relationship, it can be seen that when the worker twists the external threaded rod 15, the outer side of the external threaded rod 15 drives the internal threaded sleeve 16 to move through the threaded transmission. Since one end of the flat-head rod 21 is fixed to the second reference plate 19 and the flat-head rod 21 is slidably set in the third straight slope groove 20, the internal threaded sleeve 16 drives the second reference plate 19 to move linearly, that is, the second reference plate 19 moves linearly relative to the frame plate 33. The relative distance between the first reference plate 25 and the second reference plate 19 changes, and the size of the gap formed by the two sets of parallel strips changes. For example, to reduce the gap, the second reference plate 19 needs to move along... The frame plate 33 moves linearly upwards at an angle. The first straight groove 28 and the second straight groove 27 on the second reference plate 19 push the corresponding flat-headed columns 29. The two flat-headed columns 29 of the first parallel bar 23 slide in the first straight groove 28 of the first reference plate 25 and the first straight groove 28 of the second reference plate 19. This causes the angle of the first parallel bar 23 in the plane of the frame plate 33 to increase. Similarly, the angle of the second parallel bar 24 in the plane of the frame plate 33 increases. The acute angle formed by the first parallel bar 23 and the adjacent second parallel bar 24 below it increases (this acute angle is set as the included angle between the two). The gap (sieve hole) change structure is as follows: Figure 11As shown in the simplified diagram of the working principle, the gaps (sieve holes) become smaller, and the gap distribution becomes denser. During the above working process, because the two ends of the horizontal plate 17 protrude upwards and slide into the groove 22 at the bottom of the frame plate 33, the horizontal plate 17 moves linearly along the oblique upward direction of the frame plate 33, which can... Figure 11 The working principle can be seen from the simplified diagram;

[0047] In summary, this invention features two sets of parallel strips that are not parallel to each other and are stacked vertically. The gaps between the two parallel strips are sieve holes. This invention also includes an adjustment structure for adjusting the angle between the two sets of parallel strips. The larger the angle between the two sets of parallel strips, the smaller the area of ​​the gap, i.e., the smaller the sieve holes. At the same time, it ensures that the spacing between any two adjacent gaps does not change, while the density increases accordingly.

[0048] Specifically, in conjunction with the appendix Figure 2 As shown, a guide hopper 6 is fixed on the outside of the outer shell 2. The opening of the guide hopper 6 is located at the lower end of the frame plate 33. A discharge hopper 8 connected to the bottom of the outer shell 2 is fixed. A feed hopper 7 connected to the upper end of the outer shell 2 and with its opening facing upward is fixed.

[0049] As can be seen from the above connection relationship, the seeds can fall into the feed hopper 7 from directly above it via a belt conveyor or other transport equipment, and then fall onto the sieve plate composed of each first parallel bar 23 and each second parallel bar 24. The sieved seeds fall out from the guide hopper 6 and the discharge hopper 8 respectively.

[0050] Specifically, in conjunction with the appendix Figure 2 and attached Figure 12 As shown, a support 3 is provided at the bottom of the outer casing 2, and a steel structure frame 1 is provided below the support 3. Multiple elastic structures are provided between the two sides of the support 3 and the steel structure frame 1. A vibration motor 5 is fixed on the outside of the support 3. The elastic structure includes a return spring 31 and two connecting seats 32. The two ends of the return spring 31 are fixed to the two connecting seats 32 respectively. One connecting seat 32 is fixed to the steel structure frame 1, and the other connecting seat 32 is fixed to the support 3. The return spring 31 is vertically arranged relative to the ground. The elastic structure also includes a spring plate 30. The two ends of the spring plate 30 are fixed to the two connecting seats 32 respectively.

[0051] Further explanation is needed regarding the above: the spring plate 30 is made of spring steel and is designed for limiting the movement of the support 3, allowing it to vibrate linearly relative to the steel frame 1. This is a common existing technique. If the vibration frequency of the vibration motor 5 is high, the spring plate 30 can be removed, as a higher vibration frequency results in a smaller swaying amplitude of the return spring 31. The vibration motor 5 is selected based on the actual specifications of the equipment. The specific selection and specification calculation method uses existing technology in this field and will not be described in detail here. Furthermore, the power supply and principle of the vibration motor 5 are clear to those skilled in the art and will not be explained in detail here.

[0052] As can be seen from the above connection relationship, when the vibration motor 5 is started, the vibration motor 5 causes the entire support 3 to vibrate, the return spring 31 on the steel structure frame 1 resonates, and the spring plate 30 limits the movement, so that the support 3 vibrates linearly relative to the steel structure frame 1.

[0053] Specifically, in conjunction with the appendix Figure 3 As shown, two side baffles are fixed to the top of the frame plate 33, and the two side baffles are located on both sides of the frame opening respectively;

[0054] As can be seen from the above connection relationship, the side baffle is set so that the seeds can be concentrated on the sieve plate composed of two sets of parallel strips.

[0055] Specifically, in conjunction with the appendix Figure 2 As shown, an adjustment mechanism for adjusting the relative tilt of the bracket 3 and the outer shell 2 is provided between them. A horizontally arranged crossbar 4 is fixed at one end of the outer shell 2 and the upper end of the frame plate 33. Both ends of the crossbar 4 are rotatably mounted on the bracket 3. The adjustment mechanism includes a first gear 11, a second gear 12, a third gear 13, a rack 14, a rotating rod 10, and a support rod 9. Rotating holes are provided on both sides of the outer shell 2. The two ends of the rotating rod 10 are rotatably mounted in the two rotating holes respectively. One end of the rotating rod 10 is coaxially fixed with the first gear 11. The second gear 12 is a gear with a shaft. The first gear 11 and the second gear 12 mesh with each other, and the shaft of the second gear 12 is rotatably mounted on the outer shell 2. The third gear 13 is coaxially fixed with the rotating rod 10. The rack 14 is fixed with the second reference plate 19. The rack 14 meshes with the third gear 13. The two ends of the support rod 9 are rotatably mounted on the outer side of the bracket 3 and the circular edge of the second gear 12 respectively.

[0056] Further explanation is needed regarding the above: the diameter of the second gear 12 needs to be much larger than the diameter of the first gear 11. The first gear 11, the second gear 12, the third gear 13, and the rack 14 are selected or customized according to the actual specifications of the equipment. The specific selection and specification calculation method adopts the existing technology in this field, so it will not be described in detail here.

[0057] Further explanation is needed regarding the above: the connection between the support rod 9 and the second gear 12 is located diagonally below the rotating rod 10. The maximum counterclockwise rotation angle of the second gear 12 must satisfy the following: after the support rod 9 lifts the outer shell 2, the acute angle of the outer shell 2 relative to the ground must be greater than zero degrees (the actual degree will be selected based on the time the pattern is in place).

[0058] As can be seen from the above connection relationship, when the second reference plate 19 moves in a straight line diagonally upward, since the rack 14 is fixed to the second reference plate 19, the rack 14 moves together with the second reference plate 19. The rack 14 causes the third gear 13 to rotate clockwise. The third gear 13 drives the rotating rod 10 to rotate clockwise. The first gear 11, which is fixed to the rotating rod 10, rotates clockwise. The first gear 11 moves the second gear 12, and the second gear 12 rotates counterclockwise. The second gear 12 raises the lower end of the outer shell 2 through the support rod 9.

[0059] In summary, it should be noted that, for more precise classification, multiple units of this device can be arranged in a stepped manner, as shown in the diagram. Figure 12 As shown, this is a common technical method in the existing technology, so it will not be described in detail.

[0060] Working principle:

[0061] The first step is adjustment. The worker twists the external threaded rod 15. The outer side of the external threaded rod 15 drives the internal threaded sleeve 16 to move through the threaded transmission. Since one end of the flat-head rod 21 is fixed to the second reference plate 19 and the flat-head rod 21 is slidably set in the third straight groove 20, the internal threaded sleeve 16 drives the second reference plate 19 to move linearly. That is, the second reference plate 19 moves linearly relative to the frame plate 33. The relative distance between the first reference plate 25 and the second reference plate 19 is changed. For example, to reduce the gap, the second reference plate 19 needs to move linearly along the upper diagonal of the frame plate 33. As the line moves, the corresponding flat-headed columns 29 in the first straight groove 28 and the second straight groove 27 on the second reference plate 19 will be pushed. The two flat-headed columns 29 of the first parallel bar 23 will slide in the first straight groove 28 of the first reference plate 25 and the first straight groove 28 of the second reference plate 19, thereby increasing the angle of the first parallel bar 23 in the plane of the frame plate 33. Similarly, the angle of the second parallel bar 24 in the plane of the frame plate 33 increases, and the acute angle formed by the first parallel bar 23 and the second parallel bar 24 below it increases (this acute angle is set as the included angle between the two). The gap (sieve hole) changes structure as follows. Figure 11 As shown in the simplified diagram of the working principle, the gaps (sieve holes) become smaller, and the gap distribution becomes more dense.

[0062] In the first step of the above-mentioned operation, since the two ends of the horizontal plate 17 protrude upwards and slide into the groove 22 at the bottom of the frame plate 33, the horizontal plate 17 moves linearly along the oblique upward direction of the frame plate 33, as shown in the figure. Figure 11The working principle can be seen from the simplified diagram;

[0063] During the first step of the above process, the following processes also occur:

[0064] When the second reference plate 19 moves obliquely upward in a straight line, since the rack 14 is fixed to the second reference plate 19, the rack 14 moves together with the second reference plate 19. The rack 14 causes the third gear 13 to rotate clockwise. The third gear 13 drives the rotating rod 10 to rotate clockwise. The first gear 11, which is fixed to the rotating rod 10, rotates clockwise. The first gear 11 moves the second gear 12, and the second gear 12 rotates counterclockwise. The second gear 12 raises the lower oblique end of the outer shell 2 through the support rod 9.

[0065] The second step is to start the vibration motor 5. The vibration motor 5 causes the entire support 3 to vibrate, the return spring 31 on the steel structure frame 1 to resonate, and the spring plate 30 to limit the movement, so that the support 3 vibrates linearly relative to the steel structure frame 1.

[0066] Seeds are transported to the top of the feed hopper 7 using a belt conveyor or other transport equipment. The seeds fall into the feed hopper 7 from above and then onto the sieve plate composed of the first parallel bars 23 and the second parallel bars 24. The vibrating sieve plate screens the seeds, and the screened seeds fall out from the guide hopper 6 and the discharge hopper 8 respectively.

[0067] The foregoing description enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for breeding and grading of rice, comprising a housing (2), characterized in that: The inside of the shell (2) is fixed with a frame plate (33); the oblique upper end and the oblique lower end of the frame plate (33) are respectively provided with a first reference plate (25) and a second reference plate (19); The first reference plate (25) and the second reference plate (19) are provided below with a plurality of first parallel strips (23) and a plurality of second parallel strips (24), the second parallel strips (24) are longer than the first parallel strips (23), the first parallel strips (23) are located above the second parallel strips (24), the middle positions of the first parallel strips (23) and the second parallel strips (24) are overlapped, and a circular hole is formed in the overlapping position, a fixed column (18) is rotatably installed in the circular hole, the bottom ends of the fixed columns (18) are fixed with a horizontal plate (17), the bottom of the frame plate (33) is provided with a sliding groove (22) on both sides, the ends of the horizontal plate (17) are fixed with sliding blocks, and the two sliding blocks are respectively slidably embedded in the two sliding grooves (22), the two ends of the first parallel strips (23) and the second parallel strips (24) are fixed with flat head columns (29), the surfaces of the first reference plate (25) and the second reference plate (19) are provided with a first straight slope groove (28) and a second straight slope groove (27), the first straight slope groove (28) and the second straight slope groove (27) are parallel, the two flat head columns (29) of the first parallel strips (23) are slidably arranged in the two first straight slope grooves (28), and the two flat head columns (29) of the second parallel strips (24) are slidably arranged in the two second straight slope grooves (27).

2. A device for breeding and grading of rice as claimed in claim 1 wherein: The outside of the shell (2) is fixed with a material guide hopper (6), the hopper mouth of the material guide hopper (6) is located at the oblique lower end of the frame plate (33), the bottom of the shell (2) is fixed with a lower hopper (8) in communication therewith, and the oblique upper end of the shell (2) is fixed with an inlet hopper (7) in communication therewith and having a hopper mouth upward.

3. A device for breeding and grading of rice as claimed in claim 1 wherein: The bottom of the shell (2) is provided with a support (3), the lower side of the support (3) is provided with a steel structure frame (1), a plurality of elastic structures are arranged between the two sides of the support (3) and the steel structure frame (1), and the outside of the support (3) is fixed with a vibration motor (5).

4. A device for breeding and grading of rice as claimed in claim 3 wherein: An adjusting mechanism is arranged between the support (3) and the shell (2) to adjust the relative inclination thereof.

5. A device for breeding and grading of rice as claimed in claim 4 wherein: The elastic structure comprises a reset spring (31) and two connecting seats (32), the two ends of the reset spring (31) are respectively fixed with the two connecting seats (32), one of the connecting seats (32) is fixed with the support (3), the other connecting seat (32) is fixed with the shell (2), and the reset spring (31) is vertically arranged relative to the ground.

6. A device for breeding and grading of rice as claimed in claim 5 wherein: The elastic structure further comprises a spring plate (30), and the two ends of the spring plate (30) are respectively fixed with the two connecting seats (32).

7. A device for breeding and grading of rice as claimed in claim 1 wherein: The top of the frame plate (33) is fixed with two side plates, and the two side plates are respectively located on both sides of the frame opening.

8. A device for breeding and grading of rice as claimed in claim 3 wherein: The first reference plate (25) is fixed with the frame plate (33), a plurality of third straight slope grooves (20) are arranged on the outer side of the frame plate (33) and are parallel to each other, the inner side of each third straight slope groove (20) is slidably provided with a flat head rod (21), one end of each flat head rod (21) is fixed with the second reference plate (19), the outer side of the shell (2) is provided with an adjusting structure, the adjusting structure comprises an internally threaded sleeve (16) and an externally threaded rod (15), the outer side of the shell (2) is provided with a through hole, one end of the externally threaded rod (15) is rotatably installed in the through hole, the outer side of the externally threaded rod (15) is screw-mounted in the internally threaded sleeve (16), and the internally threaded sleeve (16) is fixed with the second reference plate (19).

9. A device for breeding and grading of rice as claimed in claim 4 wherein: The shell (2) is fixed with a horizontal transverse rod (4) at one end adjacent to the obliquely upper end of the frame plate (33), both ends of the transverse rod (4) are rotatably installed on the support (3), the adjusting mechanism comprises a first gear (11), a second gear (12), a third gear (13), a rack (14), a rotating rod (10) and a supporting rod (9), both sides of the shell (2) are provided with rotating holes, both ends of the rotating rod (10) are rotatably installed in the two rotating holes respectively, one end of the rotating rod (10) is coaxially fixed with the first gear (11), the second gear (12) is an axle gear, the first gear (11) is engaged with the second gear (12), and the shaft body of the second gear (12) is rotatably installed on the shell (2), the third gear (13) is coaxially fixed with the rotating rod (10), the rack (14) is fixed with the second reference plate (19), the rack (14) is engaged with the third gear (13), and both ends of the supporting rod (9) are rotatably installed on the outer side of the support (3) and the edge of the circular surface of the second gear (12) respectively.

10. A device for breeding and grading of rice as claimed in claim 1 wherein: The frame opening of the frame plate (33) is provided with an inclined surface (26) at the obliquely lower end, and the first parallel strip (23) and the second parallel strip (24) are both circular rods.

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