Rice breeding grading equipment

Abstract

The invention relates to the technical field of rice breeding, and discloses rice breeding grading equipment which is characterized in that a wind power assembly is mounted on the inner side of the bottom of a rack and used for blowing and separating impurities on a screen, the top of the wind power assembly is connected to the lower surface of the screen, and a filter screen is arranged on the rack and used for filtering air sucked by the wind power assembly. Through the arrangement of the filter screen and the cleaning assembly, the fan is started, air enters the fan through the air inlet cover, an end opening of the air inlet cover is in butt joint with the filter screen, it is guaranteed that the air entering the fan is filtered, impurities are prevented from entering the fan to damage equipment, a sliding rod moves along the track of a rack, and meanwhile the sliding rod is influenced by the track of the rack; the sliding rod slides back and forth on the top of the sliding frame and repeatedly extrudes the second spring, and in the moving process, shaking can be generated due to the elastic effect of the second spring, the filter screen is shaken, and the effect of cleaning dust is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of rice breeding, in particular to rice breeding grading equipment. Background Art

[0002] Rice breeding refers to the process of cultivating rice varieties with excellent traits such as high yield, high quality, and stress resistance through selection and hybridization. With the development of science and technology, rice breeding technology has also evolved from traditional selective breeding to molecular design breeding.

[0003] Before using rice seeds, it is usually necessary to screen out dust and impurities on the rice seeds to improve the hybridization effect of rice breeding. In the process of screening rice seeds, existing screening equipment is usually equipped with a fan to blow away impurities and dust on the rice seeds on the screen. However, during the air intake process of the fan, no corresponding filtering structure is provided. During the air intake process, external impurities may be inhaled, which will affect the operation of the fan and cause impurity pollution to the rice seeds again. Summary of the invention

[0004] The object of the present invention is to provide a rice breeding grading device to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is a rice breeding grading device, comprising a frame and a screen, wherein the top of the frame is fixedly connected with a shell, the top of the shell is provided with a dust outlet and a feed inlet, and the bottom port of the shell is installed with a screen for screening impurities in rice breeding; A connecting frame is connected between the bottom outer wall of the screen and the frame, and a vibration component is installed on the inner side of the bottom of the frame; The top of the vibration assembly is connected to the bottom of the screen to shake the screen; The screen is arranged obliquely at the bottom of the shell, and a discharge port is arranged at one end of the screen; A wind power component is installed on the inner side of the bottom of the frame, which is used to blow and separate the impurities on the screen, and the top of the wind power component is connected to the lower surface of the screen; The frame is provided with a filter screen for filtering the air sucked in by the wind power component; A cleaning component is installed on the frame and is located outside the filter screen for cleaning the filter screen.

[0006] The purpose of the above arrangement is that the rice seedlings enter the housing through the feed port, and the screen is installed at the bottom port of the housing to screen the rice seedlings for impurities; The vibration assembly is installed on the inner side of the bottom of the frame, and the top of the vibration assembly is connected to the bottom of the screen. The screen is shaken by vibration, thereby separating impurities from the rice seed. The wind assembly is installed on the inner side of the bottom of the frame, and its top is connected to the lower surface of the screen. The impurities on the screen are blown away and separated by wind. A dust outlet is provided on the top of the shell, and the impurities are discharged upward through the dust outlet. The filter is set on the frame to filter the air sucked in by the wind component to prevent impurities from entering the equipment again; The screen is arranged at an angle at the bottom of the shell, and a discharge port is arranged at one end, and the rice seeds after screening and impurity separation are discharged through the discharge port; The cleaning component is installed on the frame, on the outside of the filter, and is used to clean the filter to prevent the filter from being blocked and ensure the normal operation of the wind component.

[0007] Further, the vibration assembly includes a motor, the motor is installed at the bottom of the frame, and a driving wheel is installed on the output shaft of the motor; A rotating shaft is rotatably connected to the frame, a driven wheel is mounted on the outer wall of the rotating shaft, the diameter of the driven wheel is larger than the diameter of the driving wheel, and a transmission belt is connected between the driven wheel and the driving wheel.

[0008] The purpose of the above arrangement is that when the motor is started, its output shaft drives the driving wheel to rotate. Since the driven wheel and the driving wheel are connected by a transmission belt and the diameter of the driven wheel is larger than that of the driving wheel, a reduction transmission is achieved and the rotating shaft rotates with the driven wheel.

[0009] Furthermore, eccentric wheels are respectively installed on the outer walls of both ends of the rotating shaft, a ring body is sleeved on the outer wall of the eccentric wheel, a connecting rod is connected to the outer wall of the ring body, and one end of the connecting rod away from the ring body is rotatably connected to the screen.

[0010] The purpose of the above arrangement is that the eccentric wheels at both ends of the rotating shaft rotate synchronously, and the eccentric wheels drive the ring body sleeved on its outer wall to make eccentric movement, and the ring body transmits the movement to the screen through the connecting rod.

[0011] Furthermore, two fixing blocks are fixedly connected to the outer wall of the connecting rod, and a first spring is sleeved on the outer wall of the connecting rod, and the first spring is located between the two fixing blocks.

[0012] The purpose of the above-mentioned setting is that the first spring on the connecting rod is located between the two fixed blocks. When the connecting rod vibrates, the first spring absorbs the vibration. Under the action of elasticity, the first spring repeatedly acts between the two fixed blocks, thereby extending the vibration time and enhancing the vibration effect, thereby causing the screen to vibrate and screen impurities in rice breeding.

[0013] Furthermore, the wind power component includes a fan, which is installed at the bottom of the frame. The outer wall of the fan is connected to an air inlet hood, and the port of the air inlet hood is connected to the filter. The top of the fan is connected to an air outlet hood, and the top port of the air outlet hood is connected to the lower surface of the screen.

[0014] The purpose of the above setting is that when the fan starts, air enters the fan through the air inlet hood, and the air inlet hood port is connected to the filter to ensure that the air entering the fan is filtered to prevent impurities from entering the fan and damaging the equipment. The air passing through the fan reaches the lower surface of the screen through the air outlet hood, blowing and separating the impurities on the screen.

[0015] Furthermore, the cleaning assembly includes a rack, which is fixedly connected to the bottom outer wall of the frame, a sliding groove is provided on the upper surface of the rack, a sliding frame is slidably connected to the sliding groove of the rack, a moving groove is provided on the top of the sliding frame, a second spring is installed on the inner wall of the moving groove, a sliding rod is slidably connected to the inner wall of the moving groove, and the sliding rod moves along the trajectory of the rack, and during the movement, it cooperates with the second spring to cause shaking.

[0016] The purpose of the above-mentioned setting is that the sliding rod moves along the trajectory of the rack, and at the same time, the sliding rod is affected by the trajectory of the rack, and the sliding rod slides back and forth on the top of the sliding frame and repeatedly squeezes the second spring. During the movement, the elastic action of the second spring will cause shaking, which will shake the filter screen and play a role in cleaning dust.

[0017] Furthermore, a roller brush is rotatably connected to the bottom of the sliding frame, and the roller brush moves along the surface of the filter screen.

[0018] The purpose of the above arrangement is that the sliding frame is connected to the sliding rod, and the roller brush rotatably connected to the bottom of the sliding frame moves along the surface of the filter screen as the sliding frame moves, thereby cleaning the filter screen and preventing the filter screen from being blocked and affecting the operation of the wind power component.

[0019] Furthermore, a closing assembly is installed on the inner wall of the feed port, and the closing assembly includes a rubber plate and a third spring. The four rubber plates are respectively connected to the inner wall of the feed port, and the third spring is installed between the rubber plate and the inner wall of the feed port.

[0020] The purpose of the above arrangement is that at the feed port, the four rubber plates can be adaptively adjusted according to the feed amount under the action of the third spring. When the feed amount is small, the rubber plates shrink inwardly under the elastic force of the third spring, and at the same time prevent impurities and dust from being discharged through the feed port, thereby reducing the impact on subsequent feeding. When the feed amount is large, the rubber plates are squeezed to overcome the elastic force of the third spring, so that the feed port is expanded to ensure smooth feeding.

[0021] The present invention has the following beneficial effects: (1) The present invention sets a filter screen and a cleaning component, the fan is started, and air enters the fan through the air intake hood. The air intake hood port is connected to the filter screen to ensure that the air entering the fan is filtered and prevent impurities from entering the fan and damaging the equipment. The sliding rod moves along the trajectory of the rack. At the same time, the sliding rod is affected by the trajectory of the rack. The sliding rod slides back and forth on the top of the sliding frame and repeatedly squeezes the second spring. During the movement, the elastic effect of the second spring will cause shaking, which will shake the filter screen and play a role in cleaning dust.

[0022] (2) The present invention provides a roller brush, wherein the sliding frame is connected to the sliding rod, and the roller brush rotatably connected to the bottom of the sliding frame moves along the surface of the filter screen as the sliding frame moves, thereby cleaning the filter screen and preventing the filter screen from being blocked and affecting the operation of the wind power component.

[0023] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the cleaning component of the present invention; Figure 3 It is a schematic diagram of the vibration component of the present invention; Figure 4 It is a schematic diagram of the screen structure of the present invention; Figure 5 This is a schematic diagram of the feed port structure of the present invention; Figure 6 It is a schematic diagram of the internal structure of the feed port of the present invention; Figure 7 It is a schematic diagram of a wind power assembly of the present invention; In the accompanying drawings, the components represented by the reference numerals are listed as follows: In the figure: 1. frame; 2. connecting frame; 3. screen; 301. discharge port; 4. vibration component; 401. motor; 402. transmission belt; 403. driving wheel; 404. driven wheel; 405. eccentric wheel; 406. ring body; 407. connecting rod; 408. fixing block; 409. first spring; 5. shell; 501. dust outlet; 502. feed port; 6. wind power component; 601. fan; 602. air inlet hood; 603. air outlet hood; 7. filter; 8. cleaning component; 801. rack; 802. sliding rod; 803. second spring; 804. sliding frame; 805. roller brush; 9. rubber plate; 10. third spring. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] The present invention is a rice breeding grading device, such as Figure 1 - Figure 7 As shown, it includes a frame 1 and a screen 3, the top of the frame 1 is fixedly connected with a shell 5, the top of the shell 5 is provided with a dust outlet 501 and a feed port 502, and the bottom port of the shell 5 is installed with a screen 3 for screening impurities in rice breeding; A connecting frame 2 is connected between the bottom outer wall of the screen 3 and the frame 1, and a vibration component 4 is installed on the inner side of the bottom of the frame 1; The top of the vibration component 4 is connected to the bottom of the screen 3 to shake the screen 3; The screen 3 is arranged at an angle at the bottom of the housing 5, and a discharge port 301 is arranged at one end of the screen 3; A wind assembly 6 is installed on the inner side of the bottom of the frame 1, which is used to blow and separate the impurities on the screen 3, and the top of the wind assembly 6 is connected to the lower surface of the screen 3; A filter screen 7 is provided on the frame 1 for filtering the air sucked in by the wind power assembly 6; A cleaning assembly 8 is installed on the frame 1 . The cleaning assembly 8 is located outside the filter screen 7 and is used to clean the filter screen 7 .

[0028] In this embodiment, the purpose of the above arrangement is that the rice breeding enters the housing 5 through the feed port 502, and the screen 3 is installed at the bottom port of the housing 5 to screen the rice breeding for impurities; The vibration assembly 4 is installed on the inner side of the bottom of the frame 1, and its top is connected to the bottom of the screen 3, and the screen 3 is shaken by vibration, thereby separating impurities from the rice seedlings; The wind assembly 6 is installed on the bottom inner side of the frame 1, and its top is connected to the lower surface of the screen 3. The impurities on the screen 3 are blown away and separated by wind. The top of the housing 5 is provided with a dust outlet 501, and the impurities are discharged upward through the dust outlet 501. The filter screen 7 is arranged on the frame 1 and is used to filter the air sucked by the wind power component 6 to prevent impurities from entering the device again; The screen 3 is arranged at an angle at the bottom of the housing 5, and a discharge port 301 is arranged at one end, and the rice seeds after screening and impurity separation are discharged through the discharge port 301; The cleaning component 8 is installed on the frame 1 and is located outside the filter 7. It is used to clean the filter 7 to prevent the filter 7 from being blocked and ensure the normal operation of the wind component 6.

[0029] As an implementation method, Figure 3 As shown, further: The vibration assembly 4 includes a motor 401, which is mounted at the bottom of the frame 1, and a driving wheel 403 is mounted on the output shaft of the motor 401; A rotating shaft is rotatably connected to the frame 1 , and a driven wheel 404 is installed on the outer wall of the rotating shaft. The diameter of the driven wheel 404 is larger than the diameter of the driving wheel 403 , and a transmission belt 402 is connected between the driven wheel 404 and the driving wheel 403 .

[0030] In this embodiment, the purpose of the above-mentioned setting is that when the motor 401 is started, its output shaft drives the driving wheel 403 to rotate. Since the driven wheel 404 and the driving wheel 403 are connected by the transmission belt 402, and the diameter of the driven wheel 404 is larger than the diameter of the driving wheel 403, a reduction transmission is realized, and the rotating shaft rotates with the driven wheel 404.

[0031] As an implementation method, Figure 3 As shown, further: Eccentric wheels 405 are respectively installed on the outer walls of both ends of the rotating shaft. A ring body 406 is sleeved on the outer wall of the eccentric wheel 405. A connecting rod 407 is connected to the outer wall of the ring body 406. The end of the connecting rod 407 away from the ring body 406 is rotatably connected to the screen 3.

[0032] In this embodiment, the purpose of the above-mentioned arrangement is to start the motor 401, and its output shaft drives the driving wheel 403 to rotate. Since the driven wheel 404 and the driving wheel 403 are connected by the transmission belt 402, and the diameter of the driven wheel 404 is larger than the diameter of the driving wheel 403, a reduction transmission is realized, and the rotating shaft rotates with the driven wheel 404. The eccentric wheels 405 at both ends of the rotating shaft rotate synchronously, and the eccentric wheel 405 drives the ring body 406 sleeved on its outer wall to make an eccentric movement, and the ring body 406 transmits the movement to the screen 3 through the connecting rod 407.

[0033] As an implementation method, Figure 3 As shown, further: Two fixing blocks 408 are fixedly connected to the outer wall of the connecting rod 407 . A first spring 409 is sleeved on the outer wall of the connecting rod 407 . The first spring 409 is located between the two fixing blocks 408 .

[0034] In this embodiment, the purpose of the above-mentioned setting is that the first spring 409 on the connecting rod 407 is located between the two fixed blocks 408. When the connecting rod 407 vibrates, the first spring 409 absorbs the vibration. Under the action of elasticity, the first spring 409 repeatedly acts between the two fixed blocks 408, thereby extending the vibration time and enhancing the vibration effect, thereby causing the screen 3 to vibrate and screen impurities in rice breeding.

[0035] As an implementation method, Figure 7 As shown, further: The wind power component 6 includes a fan 601, which is installed at the bottom of the frame 1. The outer wall of the fan 601 is connected to an air inlet hood 602, and the port of the air inlet hood 602 is connected to the filter 7. The top of the fan 601 is connected to an air outlet hood 603, and the top port of the air outlet hood 603 is connected to the lower surface of the screen 3.

[0036] In this embodiment, the purpose of the above-mentioned setting is that when the fan 601 is started, the air enters the fan 601 through the air inlet hood 602, and the port of the air inlet hood 602 is connected to the filter screen 7 to ensure that the air entering the fan 601 is filtered to prevent impurities from entering the fan 601 and damaging the equipment. The air passing through the fan 601 reaches the lower surface of the screen 3 through the air outlet hood 603, and the impurities on the screen 3 are blown away and separated.

[0037] As an implementation method, Figure 2 As shown, further: The cleaning assembly 8 includes a rack 801, which is fixedly connected to the bottom outer wall of the frame 1. A sliding groove is provided on the upper surface of the rack 801. A sliding frame 804 is slidably connected to the sliding groove of the rack 801. A moving groove is provided on the top of the sliding frame 804. A second spring 803 is installed on the inner wall of the moving groove. A sliding rod 802 is slidably connected to the inner wall of the moving groove. The sliding rod 802 moves along the trajectory of the rack 801. During the movement, it cooperates with the second spring 803 to cause shaking.

[0038] In this embodiment, the purpose of the above-mentioned setting is that the sliding rod 802 moves along the trajectory of the rack 801. At the same time, the sliding rod 802 is affected by the trajectory of the rack 801. The sliding rod 802 slides back and forth on the top of the sliding frame 804 and repeatedly squeezes the second spring 803. During the movement, the elastic effect of the second spring 803 will cause shaking, which will shake the filter screen 7 and play a role in cleaning dust.

[0039] As an implementation method, Figure 2 As shown, further: The bottom of the sliding frame 804 is rotatably connected to a roller brush 805 , and the roller brush 805 moves along the surface of the filter screen 7 .

[0040] In this embodiment, the purpose of the above-mentioned setting is that the sliding frame 804 is connected to the sliding rod 802, and the roller brush 805 rotatably connected to the bottom of the sliding frame 804 moves along the surface of the filter screen 7 as the sliding frame 804 moves, so as to clean the filter screen 7 and prevent the filter screen 7 from being blocked and affecting the operation of the wind power component 6.

[0041] As an implementation method, Figure 5 As shown, further: A closing assembly is installed on the inner wall of the feed port 502 , and the closing assembly includes a rubber plate 9 and a third spring 10 . Four rubber plates 9 are respectively connected to the inner wall of the feed port 502 , and the third spring 10 is installed between the rubber plate 9 and the inner wall of the feed port 502 .

[0042] In this embodiment, the purpose of the above-mentioned arrangement is that at the feed port 502, the four rubber plates 9 can be adaptively adjusted according to the feed amount under the action of the third spring 10. When the feed amount is small, the rubber plates 9 shrink inwardly under the elastic force of the third spring 10, and at the same time, impurities and dust can be prevented from being discharged through the feed port 502, thereby reducing the impact on subsequent feeding. When the feed amount is large, the rubber plates 9 are squeezed to overcome the elastic force of the third spring 10, so that the feed port is expanded to ensure smooth feeding.

[0043] When in use, the motor 401 is started, and its output shaft drives the driving wheel 403 to rotate. Since the driven wheel 404 and the driving wheel 403 are connected by the transmission belt 402, and the diameter of the driven wheel 404 is larger than that of the driving wheel 403, a reduction transmission is realized, and the rotating shaft rotates with the driven wheel 404, and the eccentric wheels 405 at both ends of the rotating shaft rotate synchronously, and the eccentric wheel 405 drives the ring body 406 sleeved on its outer wall to do eccentric movement, and the ring body 406 transmits the movement to the screen 3 through the connecting rod 407; The first spring 409 on the connecting rod 407 is located between the two fixed blocks 408. When the connecting rod 407 vibrates, the first spring 409 absorbs the vibration. Under the action of elasticity, the first spring 409 repeatedly acts between the two fixed blocks 408, thereby extending the vibration time and enhancing the vibration effect, thereby causing the screen 3 to vibrate and screen the impurities in rice breeding. The fan 601 is started, and the air enters the fan 601 through the air inlet cover 602. The port of the air inlet cover 602 is connected to the filter screen 7 to ensure that the air entering the fan 601 is filtered to prevent impurities from entering the fan 601 and damaging the equipment. The air passing through the fan 601 reaches the lower surface of the screen 3 through the air outlet cover 603, and the impurities on the screen 3 are blown away and separated; The sliding rod 802 moves along the track of the rack 801. At the same time, the sliding rod 802 is affected by the track of the rack 801, and the sliding rod 802 slides back and forth on the top of the sliding frame 804, and repeatedly squeezes the second spring 803. During the movement, the second spring 803 will vibrate due to its elasticity, and the filter screen 7 will be shaken to clean the dust. The sliding frame 804 is connected to the sliding rod 802. The roller brush 805 rotatably connected to the bottom of the sliding frame 804 moves along the surface of the filter screen 7 as the sliding frame 804 moves, cleaning the filter screen 7 to prevent the filter screen 7 from being blocked and affecting the operation of the wind power assembly 6. At the feed port 502, the four rubber plates 9 can be adaptively adjusted according to the feed amount under the action of the third spring 10. When the feed amount is small, the rubber plates 9 shrink inwardly under the elastic force of the third spring 10, and at the same time prevent impurities and dust from being discharged through the feed port 502, thereby reducing the impact on subsequent feeding. When the feed amount is large, the rubber plates 9 are squeezed to overcome the elastic force of the third spring 10, so as to expand the feed port and ensure smooth feeding.

[0044] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A rice breeding grading device, comprising a frame (1) and a screen (3), characterized in that: The top of the frame (1) is fixedly connected to a housing (5), the top of the housing (5) is provided with a dust outlet (501) and a feed inlet (502), and the bottom port of the housing (5) is installed with a screen (3) for screening impurities in rice breeding; A connecting frame (2) is connected between the bottom outer wall of the screen (3) and the frame (1), and a vibration component (4) is installed on the inner side of the bottom of the frame (1); The top of the vibration component (4) is connected to the bottom of the screen (3) and is used to shake the screen (3); The screen (3) is arranged at an angle at the bottom of the housing (5), and a discharge port (301) is arranged at one end of the screen (3); A wind assembly (6) is installed on the inner side of the bottom of the frame (1) for blowing and separating impurities on the screen (3); the top of the wind assembly (6) is connected to the lower surface of the screen (3); The frame (1) is provided with a filter screen (7) for filtering the air sucked in by the wind power component (6); A cleaning component (8) is installed on the frame (1); the cleaning component (8) is located outside the filter screen (7) and is used to clean the filter screen (7).

2. A rice breeding grading device according to claim 1, characterized in that: The vibration component (4) comprises a motor (401), the motor (401) is mounted at the bottom of the frame (1), and a driving wheel (403) is mounted on the output shaft of the motor (401); A rotating shaft is rotatably connected to the frame (1), a driven wheel (404) is mounted on the outer wall of the rotating shaft, the diameter of the driven wheel (404) is greater than the diameter of the driving wheel (403), and a transmission belt (402) is connected between the driven wheel (404) and the driving wheel (403).

3. A rice breeding grading device according to claim 2, characterized in that: An eccentric wheel (405) is respectively mounted on the outer walls of both ends of the rotating shaft; a ring body (406) is sleeved on the outer wall of the eccentric wheel (405); a connecting rod (407) is connected to the outer wall of the ring body (406); and one end of the connecting rod (407) away from the ring body (406) is rotatably connected to the screen (3).

4. The rice breeding grading device according to claim 3, characterized in that: Two fixing blocks (408) are fixedly connected to the outer wall of the connecting rod (407), and a first spring (409) is sleeved on the outer wall of the connecting rod (407), wherein the first spring (409) is located between the two fixing blocks (408).

5. The rice breeding and grading device according to claim 4, characterized in that: The wind power component (6) comprises a fan (601), wherein the fan (601) is mounted at the bottom of the frame (1), and an air intake hood (602) is connected to the outer wall of the fan (601).

6. The rice breeding grading device according to claim 5, characterized in that: The port of the air inlet hood (602) is connected to the filter screen (7), the top of the fan (601) is connected to the air outlet hood (603), and the top port of the air outlet hood (603) is connected to the lower surface of the screen screen (3).

7. The rice breeding and grading device according to claim 6, characterized in that: The cleaning assembly (8) comprises a rack (801), the rack (801) being fixedly connected to the bottom outer wall of the frame (1), the upper surface of the rack (801) being provided with a sliding groove, and a sliding frame (804) being slidably connected to the sliding groove of the rack (801).

8. The rice breeding and grading device according to claim 7, characterized in that: A moving groove is provided on the top of the sliding frame (804), a second spring (803) is installed on the inner wall of the moving groove, a sliding rod (802) is slidably connected to the inner wall of the moving groove, and the sliding rod (802) moves along the track of the rack (801), and during the movement, it cooperates with the second spring (803) to cause shaking.

9. The rice breeding and grading device according to claim 8, characterized in that: The bottom of the sliding frame (804) is rotatably connected to a roller brush (805), and the roller brush (805) moves along the surface of the filter screen (7).

10. The rice breeding and grading device according to claim 9, characterized in that: A closing assembly is installed on the inner wall of the feed port (502), the closing assembly comprising a rubber plate (9) and a third spring (10), the four rubber plates (9) are respectively connected to the inner wall of the feed port (502), and the third spring (10) is installed between the rubber plate (9) and the inner wall of the feed port (502).

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