Screening device for rice seeds
By designing a multi-layer screening device, using technical means such as screen mesh, vibration motor and bellows, the problem of incomplete screening of rice seeds in the existing technology is solved, efficient screening of rice seeds and effective removal of empty shells, and the seed germination rate is improved.
Patent Information
- Application Number
- CN202421255131.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-04
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-06-04
AI Technical Summary
When the existing rice seed screening device faces a large number of seeds, it is difficult to effectively remove impurities and empty seeds, resulting in a low seed germination rate.
A screening device including a first screen box and a second screen box is designed, and large and small impurities are filtered using the first screen net and the second screen net respectively. Combined with a vibration motor, a vacuum fan and a bellows, the structures such as convex strips, cutting inclined surfaces and restriction nets can be achieved efficient screening of rice seeds and blowing out of empty shells.
The device can effectively remove large and small impurities in rice seeds, improve seed germination rate, and ensure seed quality.
Smart Images
Figure CN222587311U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of rice planting, in particular to a rice seed screening device. Background Art
[0002] Rice is a cereal crop of the genus Oryza. It is native to China and India. The ancestors of the Yangtze River Basin in China planted rice 7,000 years ago. Rice is divided into indica rice and japonica rice, early rice and mid-late rice, glutinous rice and non-glutinous rice according to the type of rice grains. It is divided into conventional rice and hybrid rice according to the seed retention method. In addition to being edible, rice can also be used as raw materials for brewing and sugar production. Rice husks and rice straw can be used as livestock feed. The main rice producing areas in China are mainly the Yangtze River Basin, the Pearl River Basin, and the Northeast. Rice is a direct cash crop. Rice is the staple food of Chinese residents. Rice seeds often contain impurities such as gravel, sand and dust. At the same time, empty shell seeds often appear in the seeds. It is necessary to screen the seeds to improve the germination rate of seeds.
[0003] When the existing rice seed screening device is faced with screening a large number of seeds, the seeds may be screened out of the device together with straw-like impurities, and when faced with dense rice seeds, it is difficult to blow out the empty shell seeds inside, that is, it is difficult to completely remove the impurities and empty shell seeds in the seeds. Utility Model Content
[0004] The purpose of the utility model is to provide a rice seed screening device to solve the problems raised in the above background technology.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A rice seed screening device comprises a first screen box, a second screen box is arranged at the bottom of the first screen box, a first screen is arranged at the bottom inside the first screen box, a second screen is arranged inside the second screen box, a convex strip is arranged on one side of the first screen box, a feeding slope is arranged on the top inside the second screen box, a vibration motor is arranged on the outside of the second screen box, a bottom plate is arranged below the second screen box, a support column is arranged on the bottom plate, a discharge box is arranged on one side of the second screen box, a restriction net is arranged inside the discharge box, a discharge port is arranged at the bottom of the discharge box, a ventilation net is arranged on one side above the discharge port, and a wind box is arranged on the outside of the ventilation net.
[0007] In a preferred embodiment of the present utility model, a feed trough is arranged on the outer side of the top of the first screen box, a dust suction fan is arranged on the first screen box, and a first impurity discharge port is arranged on the outer side of the first screen box.
[0008] In a preferred embodiment of the present invention, a chute is provided at the bottom of the second screen, and a second debris row is provided at the bottom of the chute.
[0009] In a preferred embodiment of the present utility model, a spring is arranged on the support column, a damper is included in the spring, a mounting frame is arranged on the spring, and the first screen box is mounted on the mounting frame.
[0010] In a preferred embodiment of the present utility model, slide grooves are arranged on both sides of the discharge box, and slide bars are arranged on both sides of the restriction net, and the slide bars slide on the slide grooves.
[0011] In a preferred embodiment of the present invention, a fan is arranged inside the wind box.
[0012] In a preferred embodiment of the present utility model, a third impurity row opening is provided on the other side above the discharge opening, and a limiting inclined surface is provided inside the third impurity row opening.
[0013] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention.
[0014] Beneficial effects: the device filters large impurities in rice seeds through the first screen, and the convex strips have a blocking effect on the rice seeds, thereby preventing some rice seeds from being discharged through the first row of impurities. The screened rice seeds fall to the front side of the second screen box through the feeding slope, thereby preventing them from falling directly to the back side and not being able to be screened in time. The small granular impurities are screened through the second screen, and the fan in the bellows is used to blow air, thereby blowing the empty shells into the third row of impurities and discharging them through the third row of impurities. The qualified rice seeds are made to slide down through the limiting slope. When there are too many rice seeds, their falling speed is limited by the limiting net, thereby preventing the fan from being unable to blow out the empty shells in the seeds.
[0015] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiment of the utility model with the accompanying drawings. The specific implementation method of the utility model is given in detail by the following embodiments and their drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0017] Figure 1 It is a schematic diagram of the main structure of a rice seed screening device;
[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of a screen box in a rice seed screening device;
[0019] Figure 3 It is a schematic diagram of the cross-sectional structure of a discharge box in a rice seed screening device;
[0020] Figure 4 The figure is a schematic diagram of the structure of a restriction net in a rice seed screening device.
[0021] In the figure: 1. first screen box; 11. feed chute; 12. first screen; 13. convex strip; 14. first row of miscellaneous openings; 15. dust suction fan; 2. second screen box; 21. discharge slope; 22. second screen; 23. chute; 24. second row of miscellaneous openings; 25. vibration motor; 3. bottom plate; 31. mounting frame; 32. support column; 33. spring; 4. discharge box; 41. slide; 42. restriction net; 43. slide strip; 5. discharge opening; 51. third row of miscellaneous openings; 52. restriction slope; 53. ventilation net; 54. bellows; 55. fan. DETAILED DESCRIPTION
[0022] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0023] Please refer to Figure 1-4 The utility model discloses a rice seed screening device, comprising a first screen box 1, a second screen box 2 is arranged at the bottom of the first screen box 1, a first screen 12 is arranged at the bottom of the inner side of the first screen box 1, and a second screen 22 is arranged at the inner side of the second screen box 2. The first screen box 1 and the second screen box 2 are used as the main structure of the device, which are used to install other structures and screen rice seeds. The first screen 12 is used to filter large impurities in the rice seeds, including straw impurities, etc., that is, the rice seeds pass through the first screen 12, and the second screen 22 is used to screen small granular impurities, including impurities such as stones, that is, the rice seeds will not pass through the second screen 22 A vibration motor 25 is arranged on the outside of the second screen box 2, and the vibration motor 25 is used to drive the rice seeds to vibrate and screen. A bottom plate 3 is arranged under the second screen box 2. The bottom plate 3 is the bottom structure of the device and is used to support the entire device. A support column 32 is arranged on the bottom plate 3, and a spring 33 is arranged on the support column 32. The spring 33 includes a damper inside. A mounting frame 31 is arranged on the spring 33. The first screen box 1 is installed on the mounting frame 31, that is, the bottom plate 3 is on the ground, and the entire device is supported by the support column 32. When the device vibrates, the spring 33 and the internal damper cooperate to reduce the vibration of the outside of the device.
[0024] A feeding trough 11 is arranged on the outer side of the top of the first screen box 1, that is, the rice seeds are fed through the feeding trough 11, a dust suction fan 15 is arranged on the first screen box 1, and dust in the rice seeds is absorbed by the dust suction fan 15, a first impurity discharge port 14 is arranged on the outer side of the first screen box 1, that is, impurities in the first screen box 1 are discharged through the first impurity discharge port 14, a convex strip 13 is arranged on one side of the first screen box 1, and the convex strip 13 has a blocking effect on the rice seeds, thereby preventing some rice seeds from being discharged through the first impurity discharge port 14, a feeding inclined surface 21 is arranged on the top of the inner side of the second screen box 2, that is, the seeds screened at the first screen 12 are made to fall to the front side of the second screen box 2 through the feeding inclined surface 21, thereby avoiding the situation that they fall directly to the rear side and are too late to be screened, a chute 23 is arranged at the bottom of the second screen 22, and a second impurity discharge port 24 is arranged at the bottom of the chute 23, that is, the impurities screened out by the second screen 22 fall on the chute 23, and are discharged through vibration to the second impurity discharge port 24.
[0025] A discharge box 4 is arranged on one side of the second screen box 2, that is, the screened rice seeds are vibrated into the discharge box 4, and a discharge port 5 is arranged at the bottom of the discharge box 4, that is, qualified rice seeds are discharged through the discharge port 5, a ventilation net 53 is arranged on one side above the discharge port 5, a wind box 54 is arranged on the outside of the ventilation net 53, a fan 55 is arranged inside the wind box 54, a third row of impurities 51 is arranged on the other side above the discharge port 5, and a limiting inclined surface 52 is arranged inside the third row of impurities 51, and impurities such as empty shells contained in the rice seeds that are not filtered are blown by the fan 55 in the wind box 54, so as to The empty shells are blown into the third row of miscellaneous openings 51 and discharged through the third row of miscellaneous openings 51. The qualified rice seeds slide down through the limiting slope 52 and are blocked by the ventilation net 53 to prevent the rice seeds from entering the wind box 54. A limiting net 42 is provided on the inner side of the discharge box 4. Slide grooves 41 are provided on both sides of the discharge box 4. Slide bars 43 are provided on both sides of the limiting net 42. The slide bars 43 slide on the slide grooves 41 to install the limiting net 42. That is, when there are too many rice seeds, the falling speed of the rice seeds is limited by the limiting net 42 to prevent the fan 55 from being unable to blow out the empty shells in the seeds.
[0026] The working principle of the utility model is as follows: when the device is used, the rice seeds are fed through the feed trough 11, the vibration motor 25 drives the rice seeds to vibrate and screen, the large impurities in the rice seeds are filtered through the first screen 12, the dust suction fan 15 absorbs the dust in the rice seeds, the impurities in the first screen box 1 are discharged through the first impurity discharge port 14, the convex strips 13 have a blocking effect on the rice seeds, the screened rice seeds fall to the front side of the second screen box 2 through the material discharge slope 21, the small particle impurities are screened through the second screen 22, and the second screen 22 screens the impurities. The impurities discharged fall onto the chute 23 and are discharged through vibration to the second impurity discharge port 24. When the device vibrates, the spring 33 and the internal damper cooperate to reduce the vibration outside the device. The screened rice seeds vibrate into the discharge box 4, and the qualified rice seeds are discharged through the discharge port 5. The falling speed of the rice seeds is limited by the limiting net 42, and the fan 55 in the bellows 54 blows the rice seeds, so that the empty shells are blown into the third impurity discharge port 51, and the rice seeds are discharged through the third impurity discharge port 51. The qualified rice seeds slide down through the limiting slope 52.
[0027] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. A rice seed screening device, comprising a first screening box (1), characterized in that: A second screen box (2) is arranged at the bottom of the first screen box (1), a first screen (12) is arranged at the bottom of the inner side of the first screen box (1), a second screen (22) is arranged at the inner side of the second screen box (2), a convex strip (13) is arranged at one side of the first screen box (1), a material discharge slope (21) is arranged at the top of the inner side of the second screen box (2), a vibration motor (25) is arranged at the outer side of the second screen box (2), a bottom plate (3) is arranged below the second screen box (2), a support column (32) is arranged on the bottom plate (3), a discharge box (4) is arranged at one side of the second screen box (2), a limiting net (42) is arranged at the inner side of the discharge box (4), a discharge port (5) is arranged at the bottom of the discharge box (4), a ventilation net (53) is arranged on the side above the discharge port (5), and a wind box (54) is arranged at the outer side of the ventilation net (53).
2. A rice seed screening device according to claim 1, characterized in that: A feed trough (11) is arranged on the outer side of the top of the first screen box (1), a dust suction fan (15) is arranged on the first screen box (1), and a first impurity discharge port (14) is arranged on the outer side of the first screen box (1).
3. The rice seed screening device according to claim 1, characterized in that: The bottom of the second screen (22) is provided with an inclined groove (23), and the bottom of the inclined groove (23) is provided with a second impurity discharge opening (24).
4. The rice seed screening device according to claim 1, characterized in that: The support column (32) is provided with a spring (33), the spring (33) comprises a damper inside, the spring (33) is provided with a mounting frame (31), and the first screen box (1) is mounted on the mounting frame (31).
5. The rice seed screening device according to claim 1, characterized in that: Slide grooves (41) are arranged on both sides of the discharge box (4), and slide bars (43) are arranged on both sides of the limiting net (42), and the slide bars (43) slide on the slide grooves (41).
6. The rice seed screening device according to claim 1, characterized in that: A fan (55) is arranged inside the wind box (54).
7. The rice seed screening device according to claim 1, characterized in that: A third impurity discharge opening (51) is provided on the other side above the discharge opening (5), and a limiting inclined surface (52) is provided inside the third impurity discharge opening (51).