Seed breeding screening device

Abstract

The application relates to the technical field of seed breeding, and particularly provides a screening device for seed breeding, especially maple seed breeding, which comprises a dust removal box, a screening box and a recovery box connected in sequence, a feeding hopper is fixedly installed at the top of the dust removal box, a discharge pipe for collecting seeds is arranged below the screening box and the recovery box, and the bottom of the screening box and the bottom of the recovery box are both communicated with the discharge pipe. The stirring shaft in the recovery box drives the stirring blades below the stirring shaft to separate large-particle impurities and a small part of seeds with particle diameters meeting the specifications, so that the seeds meeting the specifications can pass through the circular screen mesh into the discharge pipe, the waste of the seeds in the screening process is prevented, the screening process of the seeds is further ensured, all the seeds with particle diameters meeting the specifications can be screened and discharged from the discharge pipe for collection, and the screened seeds and impurity dust exist in independent spaces, so that the risk that the seeds still adhere to the impurity dust is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of seed breeding, and particularly relates to a screening device for seed breeding. BACKGROUND

[0002] The screening device for seeds is a mechanical device used for processing and improving product quality by using rotation, vibration, reciprocation, shaking and other actions to separate various raw materials and various primary products through a screen according to the size of the materials, and the screening device for seed production cannot remove dust and part of impurities in the seeds during screening, thereby reducing the quality of the seeds.

[0003] Patent document No. CN114682474A discloses a screening device for seed breeding and a screening method thereof, which comprises a screening box and supporting feet, and an observation window is formed in the outer wall of the screening box, a driving mechanism is arranged on one side of the screening hopper screen, a collecting mechanism is arranged at the bottom of the screening hopper screen, a flushing and spraying assembly and a dust collecting mechanism are arranged on the outer walls of the two sides of the screening box, a primary screening mechanism is arranged on the inner wall of the square cavity, the holes of the screening plate are large, which can filter the large impurities in the seeds, the blocking bars can prolong the rolling path length of the seeds when the seeds roll down, the perfect seeds are prevented from flowing out of the discharge pipe, the preliminary screening of the seeds is realized, the dust falling from the seeds is collected in the dust removal box, the small impurities flow out of the discharge pipe two under the guidance of the guide plate, the multi-stage screening measures improve the screening effect of the seeds, and the quality of the screened seeds is improved.

[0004] However, the above patent still has some deficiencies:

[0005] 1. The above patent sets the blocking bars to prolong the rolling path length of the seeds, but it is still difficult to prevent part of the seeds from flowing out of the discharge pipe, causing waste of the seeds.

[0006] 2. Although the above patent sets the device for peeling the small impurities and dust adhered to the outer wall of the seeds, the seeds and the impurities and dust are still in the same space, and the seeds still have the risk of adhering to the impurities and dust, so the device cannot guarantee the quality of the screened seeds. SUMMARY

[0007] The technical problem to be solved by the present application is that the seeds are wasted during screening and the seeds still have the risk of adhering to the impurities and dust, and the present application provides a screening device for seed breeding to solve the above problems.

[0008] The technical scheme adopted by the present application to solve its technical problems is: a screening device for seed breeding, comprising a dust removal box, a screening box and a recovery box connected in sequence, a feed hopper is fixedly installed on the top of the dust removal box, a discharge pipe for collecting seeds is arranged below the screening box and the recovery box, the bottom of the screening box and the recovery box is communicated with the discharge pipe, a first screen is arranged on the upper part of the dust removal box, a second screen is arranged on the upper part of the screening box, a circular screen is fixedly installed on the bottom of the recovery box, first inclined blocks are fixedly installed on both sides of the first screen, first inclined grooves are formed in the inner walls of both sides of the dust removal box to accommodate the oblique movement of the first inclined blocks, the first screen is slidably connected with the dust removal box through the first inclined blocks, second inclined blocks are fixedly installed on both sides of the second screen, second inclined grooves are formed in the inner walls of both sides of the screening box to accommodate the oblique movement of the second inclined blocks, the second screen is slidably connected with the screening box through the second inclined blocks, a first shaking assembly is arranged below the first screen, a second shaking assembly is arranged below the second screen, a stirring assembly is arranged in the recovery box, a transmission assembly is arranged on one side of the screening box, the first shaking assembly, the second shaking assembly and the stirring assembly are synchronously moved through the transmission assembly.

[0009] Preferably, the first shaking assembly comprises a motor, a first rotating shaft and two first cams, the first rotating shaft is arranged below the first screen and is rotatably connected with the dust removal box, one end of the first rotating shaft penetrates through one side of the dust removal box, two first cams are coaxially fixedly installed on both ends of the first rotating shaft, the first cams are matched with the first screen to make it obliquely shake when rotating, the motor is fixedly installed on one side of the dust removal box, and the output end of the motor is fixedly connected with one end of the first rotating shaft.

[0010] Preferably, the second shaking assembly comprises a second rotating shaft and two second cams, the second rotating shaft is arranged below the second screen and is rotatably connected with the screening box, one end of the second rotating shaft penetrates through one side of the screening box, two second cams are coaxially fixedly installed on both ends of the second rotating shaft, the second cams are matched with the second screen to make it obliquely shake when rotating.

[0011] Preferably, the stirring assembly comprises an L-shaped plate, a third rotating shaft and a stirring shaft, the L-shaped plate is fixedly installed on the upper part of the recovery box, the third rotating shaft is arranged below the L-shaped plate and is rotatably connected with the recovery box, one end of the third rotating shaft penetrates through one side of the recovery box, the stirring shaft is rotatably connected with the lower part of the L-shaped plate, one end of the third rotating shaft is coaxially provided with a first bevel gear, the upper part of the stirring shaft is coaxially provided with a second bevel gear, the first bevel gear is engaged with the second bevel gear, stirring blades are fixedly installed on the lower end of the stirring shaft, and the bottom of the stirring blades is in close contact with the top of the circular screen.

[0012] Preferably, the transmission assembly comprises a first transmission belt and a second transmission belt, the first transmission belt is sleeved on the first rotating shaft and the second rotating shaft, and the second transmission belt is sleeved on the second rotating shaft and the third rotating shaft.

[0013] Further preferably, the middle part of the first rotating shaft is rotationally connected with a first triangular pipe, both ends of the first triangular pipe are fixedly connected with the ash removal box, the middle part of the second rotating shaft is rotationally connected with a second triangular pipe, and both ends of the second triangular pipe are fixedly connected with the screening box.

[0014] Further preferably, the upper part of the screening box is fixedly installed with a triangular block, the triangular block is arranged close to the first screen, and the horizontal height of the triangular block is between the horizontal heights of the first screen and the second screen.

[0015] Further preferably, the first screen has a smaller mesh size than the second screen, and the circular screen has a mesh size equal to that of the second screen.

[0016] Further preferably, one end of each of the first screen and the second screen is provided with an inclined angle.

[0017] Further preferably, both sides of the recycling box are fixedly installed with a fan, both the fans are arranged close to the lower part of the second screen, and the output ends of the fans are both directed towards the inside of the recycling box.

[0018] The present application has the following advantages:

[0019] 1. The stirring shaft in the recycling box drives the stirring blades below it to separate the large-particle impurities and a small part of the seeds with a particle size meeting the specifications, so that the seeds meeting the specifications can pass through the circular screen into the discharge pipe, preventing the waste of seeds during the screening process, further ensuring that all seeds with a particle size meeting the specifications can be screened and discharged from the discharge pipe for collection during the seed screening process, and the screened seeds and impurities and dust exist in separate spaces, avoiding the risk of seeds still adhering to impurities and dust.

[0020] 2. Due to the inclined movement of the first inclined block and the first inclined groove, the first screen always moves at an angle, so that the seeds on the first screen are not only shaken up and down by the first screen to separate the small-particle impurities and dust into the ash removal box through the first screen, but also moved towards the screening box by the first screen, which not only separates the seeds from the impurities and dust, but also continuously moves the seeds to the next process during the separation process, improving the efficiency of seed screening and transportation. BRIEF DESCRIPTION OF DRAWINGS

[0021] The present application will be further described below in conjunction with the drawings and examples.

[0022] Figure 1 is a structural schematic view of an optimal embodiment of a seed breeding screening device of the present application;

[0023] Figure 2 is a partial structural sectional view of a seed breeding screening device of the present application;

[0024] Figure 3 is a structural schematic view of an ash removal box of a seed breeding screening device of the present application;

[0025] Figure 4 is a structural schematic view of a screening box of a seed breeding screening device of the present application;

[0026] Figure 5 is a structural schematic view of a recycling box of a seed breeding screening device of the present application;

[0027] Figure 6 is a partial structural sectional view of a recycling box of a seed breeding screening device of the present application.

[0028] Reference signs: 1, ash removal box; 2, screening box; 3, recycling box; 4, first screen; 5, second screen; 6, circular screen; 7, first shaking assembly; 8, second shaking assembly; 9, stirring assembly; 10, transmission assembly; 11, feeding hopper; 12, discharge pipe; 13, first triangular pipe; 21, second triangular pipe; 22, triangular block; 31, L-shaped plate; 32, fan; 41, first inclined block; 42, first inclined chute; 51, second inclined block; 52, second inclined chute; 71, motor; 72, first rotating shaft; 73, first cam; 81, second rotating shaft; 82, second cam; 91, third rotating shaft; 92, stirring shaft; 93, first bevel gear; 94, second bevel gear; 95, stirring blade; 101, first transmission belt; 102, second transmission belt. DETAILED DESCRIPTION

[0029] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only for the purpose of explaining the present application, and cannot be understood as limiting the present application.

[0030] As Figures 1-6As shown, the present application provides an embodiment of a screening device for magnolia seed breeding, which comprises a dust removal box 1, a screening box 2 and a recovery box 3 connected in sequence, a feed hopper 11 is fixedly installed on the top of the dust removal box 1, a discharge pipe 12 for collecting seeds is arranged below the screening box 2 and the recovery box 3, the bottom of the screening box 2 and the recovery box 3 is communicated with the discharge pipe 12, a first screen 4 is arranged on the upper part of the dust removal box 1, a second screen 5 is arranged on the upper part of the screening box 2, a circular screen 6 is fixedly installed on the bottom of the recovery box 3, first inclined blocks 41 are fixedly installed on both sides of the first screen 4, first inclined grooves 42 for accommodating the inclined movement of the first inclined blocks 41 are formed in the inner walls of both sides of the dust removal box 1, the first screen 4 is slidably connected with the dust removal box 1 through the first inclined blocks 41, second inclined blocks 51 are fixedly installed on both sides of the second screen 5, second inclined grooves 52 for accommodating the inclined movement of the second inclined blocks 51 are formed in the inner walls of both sides of the screening box 2, the second screen 5 is slidably connected with the screening box 2 through the second inclined blocks 51, a first shaking assembly 7 is arranged below the first screen 4, a second shaking assembly 8 is arranged below the second screen 5, a stirring assembly 9 is arranged in the recovery box 3, a transmission assembly 10 is arranged on one side of the screening box 2, and the first shaking assembly 7, the second shaking assembly 8 and the stirring assembly 9 move synchronously through the transmission assembly 10. The staff can put the seeds that need to be screened into the first screen 4 in the dust removal box 1 through the feed hopper 11.

[0031] Specifically, the first shaking assembly 7 comprises a motor 71, a first rotating shaft 72 and two first cams 73, the first rotating shaft 72 is arranged below the first screen 4 and is rotatably connected with the dust removal box 1, one end of the first rotating shaft 72 penetrates through one side of the dust removal box 1, the two first cams 73 are coaxially fixedly installed on both ends of the first rotating shaft 72, the first cam 73 rotates to cooperate with the first screen 4 to make it obliquely shake, the motor 71 is fixedly installed on one side of the dust removal box 1, and the output end of the motor 71 is fixedly connected with one end of the first rotating shaft 72. The first cam 73 in the first shaking assembly 7 rotates to make the first screen 4 obliquely shake, the first screen 4 is provided with first inclined blocks 41 on both sides, and the first screen 4 always maintains a certain angle of oblique movement due to the inclined movement cooperation of the first inclined blocks 41 and the first inclined grooves 42, so that the seeds on the first screen 4 are not only shaken up and down by the first screen 4 to separate the small impurity dust through the first screen 4 into the dust removal box 1, but also moved to the screening box 2 by the first screen 4, which not only separates the seeds from the impurity dust, but also continuously moves the seeds to the next process during the separation process, thereby improving the efficiency of seed screening and transportation, and the impurity dust after seed separation falls into the dust removal box 1.

[0032] Specifically, the second shaking assembly 8 comprises a second rotating shaft 81 and two second cams 82, the second rotating shaft 81 is arranged below the second screen 5 and is rotationally connected with the screening box 2, and one end of the second rotating shaft 81 penetrates through one side of the screening box 2, the two second cams 82 are coaxially fixedly installed at two ends of the second rotating shaft 81 respectively, and the second cam 82 cooperates with the second screen 5 to make it obliquely shake when rotating. The working principle of the second rotating shaft 81, the second cam 82, the second inclined block 51, the second inclined groove 52 and the second screen 5 in the second shaking assembly 8 is the same as that of the first shaking assembly 7, most of the seeds with a particle size meeting the specification in the screening box 2 can pass through the second screen 5 into the screening box 2, and finally are discharged through the discharge pipe 12.

[0033] Specifically, the stirring assembly 9 comprises an L-shaped plate 31, a third rotating shaft 91 and a stirring shaft 92, the L-shaped plate 31 is fixedly installed at the upper portion of the recycling box 3, the third rotating shaft 91 is arranged below the L-shaped plate 31 and is rotationally connected with the recycling box 3, and one end of the third rotating shaft 91 penetrates through one side of the recycling box 3, the stirring shaft 92 is rotationally connected with the lower portion of the L-shaped plate 31, one end of the third rotating shaft 91 is coaxially provided with a first bevel gear 93, the upper portion of the stirring shaft 92 is coaxially provided with a second bevel gear 94, the first bevel gear 93 is engaged with the second bevel gear 94, and the lower end of the stirring shaft 92 is fixedly installed with a stirring blade 95, and the bottom of the stirring blade 95 is in abutment with the top of the circular screen 6. The large-particle impurities shaken out of the second screen 5 and a small part of the seeds with a particle size meeting the specification can enter the recycling box 3, the arrangement of the L-shaped plate 31 can prevent the large-particle impurities and the small part of the seeds with a particle size meeting the specification from directly impacting the first bevel gear 93 on the third rotating shaft 91 and the second bevel gear 94 on the stirring shaft 92, thereby preventing equipment wear and tear, at this time, the third rotating shaft 91 drives the stirring shaft 92 in the stirring assembly 9 to rotate through the engagement of the first bevel gear 93 and the second bevel gear 94, the stirring shaft 92 drives the stirring blade 95 below it to separate the large-particle impurities and the small part of the seeds with a particle size meeting the specification, so that the seeds meeting the specification can enter the discharge pipe 12 through the circular screen 6, thereby preventing waste of the seeds in the screening process.

[0034] Specifically, the transmission assembly 10 comprises a first transmission belt 101 and a second transmission belt 102, the first transmission belt 101 is sleeved on the first rotating shaft 72 and the second rotating shaft 81, and the second transmission belt 102 is sleeved on the second rotating shaft 81 and the third rotating shaft 91. The staff first starts the motor 71 to drive the first rotating shaft 72 to rotate, and drives the second rotating shaft 81 and the third rotating shaft 91 to rotate through the transmission of the first transmission belt 101 and the second transmission belt 102 in the transmission assembly 10, so that the first shaking assembly 7, the second shaking assembly 8 and the stirring assembly 9 can work synchronously.

[0035] More specifically, the middle part of the first rotating shaft 72 is rotatably connected with the first triangular pipe 13, and the two ends of the first triangular pipe 13 are fixedly connected with the ash removal box 1. The middle part of the second rotating shaft 81 is rotatably connected with the second triangular pipe 21, and the two ends of the second triangular pipe 21 are fixedly connected with the screening box 2. The first triangular pipe 13 on the first rotating shaft 72 can prevent impurities and dust from adhering to the first rotating shaft, thereby affecting the normal operation of the device. The second triangular pipe 21 can prevent the seeds meeting the specifications from directly impacting the second rotating shaft 81 that is rotating, thereby reducing the wear of the seeds.

[0036] More specifically, the upper part of the screening box 2 is fixedly installed with a triangular block 22, and the triangular block 22 is arranged close to the first screen 4 and has a horizontal height between the horizontal heights of the first screen 4 and the second screen 5. Since the first screen 4 and the second screen 5 both perform oblique movement, the first screen 4 and the second screen 5 will respectively leave a gap at one end of the ash removal box 1 and the screening box 2 during the shaking process. To prevent the seeds from leaking out of the gap, a bevel is formed below the discharge hopper, so that the seeds to be processed will fall on the first screen 4 close to the middle part. The triangular block 22 is arranged for the same reason as the bevel formed below the discharge hopper, that is, to prevent the untreated seeds from leaking out of the gap between the second screen 5 and the screening box 2.

[0037] More specifically, the screen hole diameter of the first screen 4 is smaller than the screen hole diameter of the second screen 5, and the screen hole diameter of the circular screen 6 is equal to the screen hole diameter of the second screen 5. The impurities and dust with small particle sizes are separated into the ash removal box 1 through the first screen 4. Most of the seeds meeting the specifications in the screening box 2 will pass through the second screen 5 into the screening box 2, and finally be discharged through the discharge pipe 12. The seeds meeting the specifications in the recovery box 3 can also pass through the circular screen 6 into the discharge pipe 12.

[0038] More specifically, one end of the first screen 4 and the second screen 5 is provided with an inclined angle. The inclined angle on one end of the first screen 4 and the second screen 5 allows the seeds to smoothly enter the next process.

[0039] More specifically, the two sides of the recovery box 3 are fixedly installed with a fan 32, and the two fans 32 are arranged close to the lower part of the second screen 5, and the output ends of the two fans 32 are directed towards the inside of the recovery box 3. The arrangement of the fan 32 on the recovery box 3 can ensure that the large-particle impurities and a small part of the seeds meeting the specifications on the recovery box 3 can be blown into the recovery box 3, thereby avoiding the situation that the seeds are not treated.

[0040] In the process of working of the device, the staff first starts the motor 71 to drive the first rotating shaft 72 to rotate, and drives the second rotating shaft 81 and the third rotating shaft 91 to rotate through the transmission of the first transmission belt 101 and the second transmission belt 102 in the transmission assembly 10, then puts the seeds needing to be screened into the first screen 4 in the ash removal box 1 through the feed hopper 11, at this time, the first cam 73 in the first shaking assembly 7 rotates, so that the first screen 4 is obliquely shaken, the first screen 4 is provided with first inclined blocks 41 on both sides, due to the oblique movement cooperation of the first inclined blocks 41 and the first inclined grooves 42, the first screen 4 always keeps a certain angle of oblique movement, so that the seeds on the first screen 4 are not only shaken up and down by the first screen 4 to separate the impurities and dust with small particle size into the ash removal box 1 through the first screen 4, but also are driven by the first screen 4 to move to the screening box 2, which can not only separate the impurities and dust from the seeds, but also can make the seeds continuously run to the next process in the separation process, improving the efficiency of seed screening and transportation.

[0041] The impurities and dust separated after the seeds fall into the ash removal box 1, the first triangular pipe 13 on the first rotating shaft 72 can prevent the impurities and dust from adhering to the first rotating shaft, thereby affecting the normal operation of the device, after the overall device is worked, the dust in the ash removal box 1 can be uniformly treated by cleaning and the like, which is the prior art and will not be described too much here.

[0042] The seeds separated after the separation enter the second screen 5 through the triangular block 22 on the screening box 2, it needs to be explained here that since the first screen 4 and the second screen 5 both perform oblique movement, the first screen 4 and the second screen 5 will respectively leave a gap at one end of the ash removal box 1 and the screening box 2 in the shaking process, in order to prevent the seeds from leaking out of the gap, a bevel is formed below the discharge hopper, so that the seeds to be treated will fall on the first screen 4 near the middle part, the triangular block 22 is provided for the same reason as the bevel formed below the discharge hopper, that is, to prevent the untreated seeds from leaking out of the gap between the second screen 5 and the screening box 2, the working principle of the oblique movement cooperation of the second rotating shaft 81, the second cam 82, the second inclined block 51, the second inclined groove 52 and the second screen 5 in the second shaking assembly 8 is the same as that of the first shaking assembly 7, most of the seeds with particle size meeting the specifications in the screening box 2 will enter the screening box 2 through the second screen 5, and finally be discharged through the discharge pipe 12, the second triangular pipe 21 can make the seeds meeting the specifications not directly impact on the second rotating shaft 81 which is rotating, reducing the wear of the seeds, while the large-particle impurities shaken out of the second screen 5 and a small part of the seeds with particle size meeting the specifications will enter the recycling box 3.

[0043] The L-shaped plate 31 can prevent large-particle impurities and a small part of seeds with a particle size meeting the standard from directly impacting the first bevel gear 93 on the third rotating shaft 91 and the second bevel gear 94 on the stirring shaft 92, preventing equipment wear, at this time, the third rotating shaft 91 drives the stirring shaft 92 in the stirring assembly 9 to rotate through the meshing of the first bevel gear 93 and the second bevel gear 94, and the stirring shaft 92 drives the stirring blade 95 below it to separate the large-particle impurities and the small part of seeds with a particle size meeting the standard, so that the seeds meeting the standard can pass through the circular screen 6 into the discharge pipe 12, preventing waste of the seeds in the screening process, further ensuring that all seeds with a particle size meeting the standard can be screened during the seed screening process and discharged from the discharge pipe 12 for collection, and the screened seeds and impurities and dust exist in independent spaces, avoiding the risk of seeds still adhering to impurities and dust.

[0044] The setting of the fan 32 on the recycling box 3 can ensure that the large-particle impurities and the small part of seeds with a particle size meeting the standard on the recycling box 3 can be blown into the recycling box 3, avoiding the situation that the seeds are not treated.

[0045] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0046] Based on the above ideal embodiments according to the present application, through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the present application.

Claims

1. A seed breeding screening device, comprising a dust removal box (1), a screening box (2) and a recovery box (3) connected in sequence, a feeding hopper (11) is fixedly installed on the top of the dust removal box (1), a discharge pipe (12) for collecting seeds is arranged below the screening box (2) and the recovery box (3) in common, and the bottom of the screening box (2) and the recovery box (3) is communicated with the discharge pipe (12), characterized in that: The upper portion of the ash removal box (1) is provided with a first screen (4), the upper portion of the screening box (2) is provided with a second screen (5), the bottom of the recycling box (3) is fixedly installed with a circular screen (6), both sides of the first screen (4) are fixedly installed with first inclined blocks (41), the inner walls of both sides of the ash removal box (1) are provided with first inclined grooves (42) for accommodating the inclined movement of the first inclined blocks (41), the first screen (4) is in sliding fit with the ash removal box (1) through the first inclined blocks (41), both sides of the second screen (5) are fixedly installed with second inclined blocks (51), the inner walls of both sides of the screening box (2) are provided with second inclined grooves (52) for accommodating the inclined movement of the second inclined blocks (51), the second screen (5) is in sliding fit with the screening box (2) through the second inclined blocks (51), the lower portion of the first screen (4) is provided with a first shaking assembly (7), the lower portion of the second screen (5) is provided with a second shaking assembly (8), the recycling box (3) is provided with a stirring assembly (9), one side of the screening box (2) is provided with a transmission assembly (10), the first shaking assembly (7), the second shaking assembly (8) and the stirring assembly (9) are in synchronous movement through the transmission assembly (10); The first shaking assembly (7) comprises a motor (71), a first rotating shaft (72) and two first cams (73), the first rotating shaft (72) is arranged below the first screen (4) and is rotatably connected with the ash removal box (1), one end of the first rotating shaft (72) penetrates through one side of the ash removal box (1), the two first cams (73) are coaxially fixedly installed at the two ends of the first rotating shaft (72), the first cam (73) cooperates with the first screen (4) to make it obliquely shake when rotating, the motor (71) is fixedly installed on one side of the ash removal box (1), and the output end of the motor (71) is fixedly connected with one end of the first rotating shaft (72); The second shaking assembly (8) comprises a second rotating shaft (81) and two second cams (82), the second rotating shaft (81) is arranged below the second screen (5) and is rotatably connected with the screening box (2), one end of the second rotating shaft (81) penetrates through one side of the screening box (2), and the two second cams (82) are coaxially fixedly installed at the two ends of the second rotating shaft (81), the second cam (82) cooperates with the second screen (5) to make it obliquely shake when rotating, The stirring assembly (9) comprises an L-shaped plate (31), a third rotating shaft (91) and a stirring shaft (92), the L-shaped plate (31) is fixedly installed on the upper portion of the recycling box (3), the third rotating shaft (91) is arranged below the L-shaped plate (31) and is rotationally connected with the recycling box (3), one end of the third rotating shaft (91) penetrates through one side of the recycling box (3), the stirring shaft (92) is rotationally connected with the lower portion of the L-shaped plate (31), one end of the third rotating shaft (91) is coaxially provided with a first bevel gear (93), the upper portion of the stirring shaft (92) is coaxially provided with a second bevel gear (94), the first bevel gear (93) is meshed with the second bevel gear (94), the lower end of the stirring shaft (92) is fixedly installed with stirring blades (95), and the bottom of the stirring blades (95) is attached to the top of the circular screen (6). The transmission assembly (10) comprises a first transmission belt (101) and a second transmission belt (102), the first transmission belt (101) is sleeved on the first rotating shaft (72) and the second rotating shaft (81), and the second transmission belt (102) is sleeved on the second rotating shaft (81) and the third rotating shaft (91). The middle portion of the first rotating shaft (72) is rotationally connected with a first triangular pipe (13), both ends of the first triangular pipe (13) are fixedly connected with the ash removal box (1), and the middle portion of the second rotating shaft (81) is rotationally connected with a second triangular pipe (21), both ends of the second triangular pipe (21) are fixedly connected with the screening box (2). The upper portion of the screening box (2) is fixedly installed with a triangular block (22), the triangular block (22) is arranged close to the first screen (4), and the horizontal height of the triangular block (22) is between the horizontal heights of the first screen (4) and the second screen (5).

2. The seed breeding screening apparatus according to claim 1, wherein: The screen hole diameter of the first screen (4) is smaller than the screen hole diameter of the second screen (5), and the screen hole diameter of the circular screen (6) is equal to the screen hole diameter of the second screen (5).

3. The seed breeding screening apparatus according to claim 1, wherein: One end of the first screen (4) and the second screen (5) is provided with an inclined angle.

4. The seed breeding screening apparatus according to claim 1, wherein: Both sides of the recycling box (3) are fixedly installed with a fan (32), both the fans (32) are arranged close to the lower portion of the second screen (5), and the output ends of the two fans (32) are both directed towards the interior of the recycling box (3).

Images