Seed selection grading production line

Abstract

The application provides a seed selection grading production line, and relates to the field of seed selection, which comprises an industrial computer, a storage bin, a wind feeding pipe group, a vibrating screen, a negative pressure dust collector and a color sorter; the vibrating screen is provided with a first outlet for discharging qualified seeds; the discharge port of the storage bin and the feeding end of the vibrating screen, and the first outlet of the vibrating screen and the feeding port of the color sorter are respectively communicated through the wind feeding pipe group; the wind feeding pipe group comprises a conveying pipe and a buffer box, the top of the buffer box is provided with a dust removal port, and the negative pressure dust collector is communicated with the dust removal port through a pipeline and provides negative pressure for the dust removal port. The size of the seeds is graded through the vibrating screen, and the seeds with qualified size are respectively conveyed to the color sorter through the wind feeding pipe group for color selection. While conveying the seeds, the wind feeding pipe group removes the light component impurities such as dust in the seeds, and realizes the cleaning and purification of the seeds.

Description

Technical Field

[0001] This invention relates to the field of seed sorting technology, and in particular to a seed selection and grading production line. Background Technology

[0002] In recent years, with the increasing emphasis placed on agriculture by the state, seeds, as the "chips" of agricultural development and the lifeblood of agriculture, have become an important goal for my country to achieve agricultural development in the new era. A high-quality seed production process is crucial for improving seed quality. High-quality seeds can significantly increase germination rate and seedling uniformity. Precision single-seed sowing by machine reduces the amount of seeds sown and lowers costs. Plump, high-quality seeds result in more uniform crop growth later on, facilitating mechanical detasseling and harvesting, and improving operational efficiency.

[0003] Mechanization of the seed industry is a crucial foundation and prerequisite for its modernization. With the continuous development of seed mechanization in my country, the requirements for mechanized operations are becoming increasingly stringent, moving towards serialization, specialization, refinement, informatization, automation, and intelligence. Integrated and intelligent seed production, including the selection and grading of parent seeds before sowing, has become a necessary development and requirement within the industry.

[0004] Currently, in the seed production stage, the equipment for selecting and grading parent seeds of grain crops such as corn, wheat, and rice before sowing is mostly general-purpose commercial seed cleaning machines, such as air separators and color sorters. These machines suffer from poor self-cleaning quality and limited grading and testing methods. Summary of the Invention

[0005] This invention provides a seed selection and grading production line to solve the shortcomings of existing technologies, such as poor self-cleaning quality and limited grading and testing methods.

[0006] According to the present invention, a seed selection and grading production line is characterized in that it includes an industrial control computer, a storage silo, an air conveying pipe assembly, a vibrating screen, a negative pressure dust collector, and a color sorter.

[0007] The vibrating screen is equipped with a first outlet for discharging qualified seeds.

[0008] The discharge port of the storage silo is connected to the feed end of the vibrating screen, and the first outlet of the vibrating screen is connected to the feed inlet of the color sorter through the air conveying pipe assembly.

[0009] The air delivery pipe assembly includes a delivery pipe and a buffer box. The delivery pipe is connected to the buffer box. The delivery pipe is provided with a delivery inlet for seed input, and the buffer box is provided with a delivery outlet for seed discharge.

[0010] The top of the buffer box is provided with a dust removal port, and the negative pressure dust collector's through pipe is connected to the dust removal port and provides negative pressure to the dust removal port.

[0011] According to the present invention, a seed selection and grading production line further includes a first silo and a second silo. The vibrating screen is provided with a second outlet for discharging unqualified seeds, and the color sorter is provided with a third outlet for discharging qualified seeds and a fourth outlet for discharging unqualified seeds. The third outlet is connected to the inlet of the first silo through the air conveying pipe assembly, and the fourth outlet and the second outlet are respectively connected to the inlet of the second silo through the air conveying pipe assembly.

[0012] According to a seed selection and grading production line provided by the present invention, the air conveying pipe assembly further includes a positive pressure fan, and the air outlet of the positive pressure fan is connected to the end of the conveying pipe away from the buffer box.

[0013] According to a seed selection and grading production line provided by the present invention, a gate and a linear stepper motor for driving the gate to slide are slidably connected to the conveying outlet. The gate slides to block the conveying outlet, and the linear stepper motor is communicatively connected to the industrial control computer.

[0014] According to a seed selection and grading production line provided by the present invention, the buffer box is provided with multiple pairs of laser sensors, each pair of laser sensors is distributed along the vertical direction, and each pair of laser sensors includes a laser emitter and a laser receiver disposed opposite to the laser emitter. The laser emitter and the laser receiver are respectively communicatively connected to the industrial control computer.

[0015] According to a seed selection and grading production line provided by the present invention, a weight sensor is fixedly connected to the bottom of the buffer box, and the weight sensor is communicatively connected to the industrial control computer.

[0016] According to a seed selection and grading production line provided by the present invention, the buffer box is provided with a seed inlet for communicating with the conveying pipe, a feeding baffle is connected inside the buffer box, the top of the feeding baffle is connected between the seed inlet and the dust removal port, the laser sensor is located on the side of the feeding baffle away from the seed inlet, and a gap is provided between the feeding baffle and the discharge port.

[0017] According to a seed selection and grading production line provided by the present invention, the feed baffle is rotatably connected to the buffer box, the buffer box is connected to an adjusting motor, the adjusting motor drives the feed baffle to rotate and adjust the angle of the feed baffle, and the adjusting motor is communicatively connected to the industrial control computer.

[0018] According to the seed selection and grading production line provided by the present invention, the vibrating screen has multiple layers of screen mesh, and elastic balls are arranged between adjacent screen meshes.

[0019] According to a seed selection and grading production line provided by the present invention, the vibrating screen is connected to a vibration frequency adjustment device and a grating sensor.

[0020] The grating sensor is located at the end of the screen of the vibrating screen and is used to sense the seeds rolling on the screen.

[0021] The vibration frequency adjustment device is used to adjust the vibration frequency of the vibrating screen;

[0022] The grating sensor and the frequency adjustment device are respectively connected to the industrial control computer for communication.

[0023] This invention provides a seed selection and grading production line. A vibrating screen grades seeds by size, and a pneumatic conveying system transports the sized seeds to a color sorter for color sorting. Simultaneously, the pneumatic conveying system removes light impurities such as dust from the seeds, achieving seed cleaning and purification. Before color sorting, the seeds are conveyed through two pneumatic conveying systems, completing two rounds of dust removal and purification, further improving the color sorting effect. This achieves self-cleaning and multi-level color sorting of the seeds. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the connection relationship of a seed selection and grading production line provided by the present invention.

[0026] Figure 2 This is a schematic diagram of the storage bin of a seed selection and grading production line provided by the present invention.

[0027] Figure 3 This is a schematic diagram of the structure of a buffer box in a seed selection and grading production line provided by the present invention.

[0028] Figure 4 This is a schematic diagram showing the connection relationship of the grating sensor in the vibrating screen of a seed selection and grading production line provided by the present invention.

[0029] Figure 5 This is a schematic diagram of the structure of a vibrating screen in a seed selection and grading production line provided by the present invention.

[0030] Figure 6 This is a schematic diagram showing the connection relationship of the screens in a seed selection and grading production line provided by the present invention.

[0031] Figure 7 This is a schematic diagram of the structure of a color sorter in a seed selection and grading production line provided by the present invention.

[0032] Figure 8 This is a schematic diagram of the structure of a vibrating feeder for a seed selection and grading production line provided by the present invention.

[0033] Figure 9 This is a schematic diagram of the connection relationship of the color sorter in a seed selection and grading production line provided by the present invention.

[0034] Figure 10 This is a schematic diagram of the seed feeding groove wheel of a seed selection and grading production line provided by the present invention.

[0035] Figure label:

[0036] 1. Main control cabinet; 101. DC power supply; 102. Stepper motor driver; 103. Air switch; 104. Relay; 105. Touch screen; 2. Storage bin; 20. Feeding fan; 201. Feeding trough; 202. Feeding pipe; 203. Cylinder; 204. Drive motor; 205. Seed supply wheel; 206. First shaft section; 207. Second shaft section; 208. Conveying trough; 3. Vibrating screen; 301. Screen mesh; 302. Elastic ball; 303. Grating sensor; 304. Vibration frequency adjustment device; 305. Drive mechanism; 306. Second outlet; 307. Frame; 308. Ball grid; 309. Ball frame; 310. Reinforcing rib; 311. Guard plate; 312. Tilt adjustment mechanism; 313. Screw jack; 314. Tilt adjustment stepper motor; 315. First outlet; 4. Color sorter; 401. Vibrating feeder; 402. Seed drop track; 403. Seed cleaning air gun; 404. Gas spray valve; 405. Front camera; 406. Rear camera; 407. Waste seed baffle; 408. Good seed discharge outlet; 409. Waste seed discharge outlet; 410. Third outlet; 411. Fourth outlet; 412. Feed box; 413. Seed conveying trough; 414. Vibrator; 5. Positive pressure fan; 501. Conveying pipe 502. Buffer box; 503. Conveying inlet; 504. Conveying outlet; 505. Positive pressure pneumatic conveying pipe joint; 506. Negative pressure pneumatic conveying pipe joint; 507. Dust removal port; 508. Seed inlet; 509. Gate; 510. Linear stepper motor; 511. Laser sensor; 512. Weight sensor; 513. Feed baffle; 6. Negative pressure dust collector; 601. Dust removal fan; 602. Filter element; 603. Dust removal pipe; 7. First hopper; 71. Second hopper. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0038] The terms "first" and "second" in the specification and claims of this invention may explicitly or implicitly include one or more of those features. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0039] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0040] The following is combined Figures 1-10 This invention describes a seed selection and grading production line.

[0041] This invention provides a seed selection and grading production line, comprising an industrial control computer, a storage silo 2, an air conveying pipe assembly, a vibrating screen 3, a negative pressure dust collector 6, and a color sorter 4. The vibrating screen 3 is provided with a first outlet 315 for discharging qualified seeds. The outlet of the storage silo 2 is connected to the inlet of the vibrating screen 3, and the first outlet 315 of the vibrating screen 3 is connected to the inlet of the color sorter 4, respectively, via the air conveying pipe assembly. The air conveying pipe assembly includes a conveying pipe 501 and a buffer tank 502. The conveying pipe 501 is connected to the buffer tank 502, and the conveying pipe 501 is provided with a conveying inlet 503 for seed input. The buffer tank 502 is provided with a conveying outlet 504 for seed discharge. A dust collection port 507 is provided at the top of the buffer tank 502, and the negative pressure dust collector 6's through-pipe is connected to the dust collection port 507 and provides negative pressure to the dust collection port 507.

[0042] Specifically, such as Figure 1 , Figure 3 As shown, air conveying pipe assemblies are respectively installed between the discharge port of storage silo 2 and the feed end of vibrating screen 3, and between the first outlet 315 of vibrating screen 3 and the feed inlet of color sorter 4. The conveying inlet 503 of the air conveying pipe assembly between storage silo 2 and vibrating screen 3 is connected to the discharge port of storage silo 2, and the conveying outlet 504 is located above vibrating screen 3. The conveying inlet 503 of the air conveying pipe assembly between vibrating screen 3 and color sorter 4 is connected to the first outlet 315, and the conveying outlet 504 is connected to the feed inlet of color sorter 4. The negative pressure dust collector 6 provides negative pressure to the two air conveying pipe assemblies through the dust collection port 507, thereby providing flowing air within the conveying pipe 501. This allows the seeds discharged from the discharge port of storage silo 2 to be conveyed by the air conveying pipe assembly to the feed end above vibrating screen 3, where they are screened by vibrating screen 3 to remove seeds that do not meet the size requirements. The qualified seeds screened by the vibrating screen 3 are conveyed to the feed inlet of the color sorter 4 by the air conveying pipe assembly. The color sorter 4 performs color sorting to remove seeds that are shriveled, moldy, or otherwise unqualified in appearance, thus achieving simultaneous sorting of seeds by size and appearance. On the other hand, the dust inside the seeds is conveyed by the air through the dust removal port 507 to the negative pressure dust collector 6 for dust removal.

[0043] Specifically, the vibrating screen 3's screen 301 can be configured with three layers, with the mesh size decreasing from top to bottom. Seeds can be divided into four grades: small, medium, large, and extra-large. Of course, more layers of screen 301 can be configured, and seeds can be divided into more grades. When seeds are divided into four grades, small and extra-large seeds are collectively referred to as unqualified seeds, while medium and large seeds are considered qualified seeds. A first color sorter 4 and a second color sorter 4 are used for color sorting of medium and large seeds respectively. Medium and large seeds are conveyed through two sets of air conveying pipes, with medium-sized seeds fed into the first color sorter 4 for color sorting and large-sized seeds fed into the second color sorter 4 for color sorting. When multiple grades of qualified seeds are set, a color sorter 4 is set for each grade.

[0044] This invention provides a seed selection and grading production line. A vibrating screen 3 grades the seeds by size, and a pneumatic conveying system transports the sized seeds to a color sorter 4 for color sorting. While conveying the seeds, the pneumatic conveying system removes light impurities such as dust, achieving seed cleaning and purification. Before color sorting, the seeds are conveyed through two pneumatic conveying systems, completing two rounds of dust removal and purification, further improving the color sorting effect of the color sorter 4. This achieves self-cleaning and multi-level color sorting of the seeds.

[0045] Furthermore, it also includes a first silo 7 and a second silo 71. The vibrating screen 3 is provided with a second outlet 306 for discharging unqualified seeds. The color sorter 4 is provided with a third outlet 410 for discharging qualified seeds and a fourth outlet 411 for discharging unqualified seeds. The third outlet 410 is connected to the inlet of the first silo 7 through an air conveying pipe assembly. The fourth outlet 411 and the second outlet 306 are respectively connected to the inlet of the second silo 71 through an air conveying pipe assembly.

[0046] Specifically, such as Figure 1 , Figure 4 , Figure 7 As shown, a first hopper 7 is used to collect and store qualified seeds, while a second hopper 71 is used to collect and store unqualified seeds. Qualified seeds are transported from the third outlet 410 to the inlet of the first hopper 7 via a pneumatic conveying system, thus storing them in the first hopper 7. Seeds that are out of size from the vibrating screen 3 are transported from the second outlet 306 to the inlet of the second hopper 71 via a pneumatic conveying system. Unqualified seeds sorted by the color sorter 4 are transported from the fourth outlet 411 to the inlet of the second hopper 71 via a pneumatic conveying system, achieving unified recycling and storage of unqualified seeds.

[0047] Specifically, such as Figure 1 As shown, when two seeds are selected by the vibrating screen 3, a color sorter 4 is set up for each level to perform color sorting, and a corresponding first hopper 7 is set up for each qualified seed selected by color sorting. When multiple seeds are selected by the vibrating screen 3, a corresponding number of color sorters 4 and first hoppers 7 are set up for color sorting and storage respectively.

[0048] Furthermore, the air delivery pipe assembly also includes a positive pressure fan 5, the air outlet of which is connected to the end of the delivery pipe 501 away from the buffer box 502.

[0049] Specifically, such as Figure 1 As shown, a positive pressure fan 5 is connected to the end of the conveying pipe 501 away from the buffer box 502. Positive pressure airflow is used to provide airflow towards the buffer box 502 through the conveying pipe 501, improving the conveying effect of the pneumatic conveying pipe assembly. When conveying airflow using only the negative pressure dust collector 6 at the dust collection port 507, the negative pressure pneumatic conveying pipe 501 is connected to the conveying inlet 503 via a connector. When conveying airflow using both the positive pressure fan 5 and the negative pressure dust collector 6, the positive pressure pneumatic conveying pipe 501 is connected to the conveying inlet 503 via a connector.

[0050] Furthermore, a gate 509 and a linear stepper motor 510 for driving the gate 509 to slide are slidably connected to the conveying outlet 504. The gate 509 slides to block the conveying outlet 504, and the linear stepper motor 510 is communicatively connected to the industrial control computer.

[0051] Specifically, such as Figure 3 As shown, the linear stepper motor 510 is connected to the industrial control computer for communication. The industrial control computer sends control commands to the linear stepper motor 510, thereby driving the gate 509 to slide, thereby adjusting the opening of the conveying outlet 504.

[0052] Furthermore, the buffer box 502 is provided with multiple pairs of laser sensors 511, each pair of laser sensors 511 is distributed in a vertical direction, and each pair of laser sensors 511 includes a laser emitter and a laser receiver disposed opposite to the laser emitter. The laser emitter and the laser receiver are respectively connected to the industrial control computer for communication.

[0053] Specifically, such as Figure 4 As shown, laser sensors 511 are installed inside buffer boxes 502, with five pairs of laser sensors 511 corresponding to each buffer box 502. Each pair of laser sensors 511 includes a laser emitter and a laser receiver positioned opposite the laser emitter. When the amount of seeds entering the buffer box 502 exceeds the amount of seeds exiting from the conveying outlet 504, seeds gradually accumulate in the buffer box 502. When the seeds obstruct the laser emitter and the laser receiver positioned opposite it, the laser sensors 511 collect the seed height data and monitor the seed layer height inside the buffer box 502 in real time. The seed height signal sensed by the laser sensors 511 is transmitted to the industrial control computer.

[0054] Furthermore, a weight sensor 512 is fixedly connected to the bottom of the buffer box 502, and the weight sensor 512 is communicatively connected to the industrial control computer. By setting four weight sensors 512 at the bottom of each buffer box 502, the total weight of the seeds in the buffer box 502 is monitored in real time, and the monitored seed weight signal is transmitted to the industrial control computer through the communication connection.

[0055] Specifically, the upper and lower limits for the seed quantity are set at the industrial control computer. These limits can be set with reference to the seed weight and height signals. When the seed quantity in the buffer bin 502 above the color sorter 4 exceeds the upper limit, the industrial control computer controls the linear stepper motor 510 at the conveying outlet 504 of the buffer bin 502 above the vibrating screen 3. The linear stepper motor 510 drives the gate 509 to slide, reducing the opening of the conveying outlet 504 and thus reducing the feed to the vibrating screen 3, thereby reducing the amount of seeds entering the buffer bin 502 above the color sorter 4. When the seed quantity in the buffer bin 502 above the color sorter 4 is below the lower limit, the industrial control computer controls the linear stepper motor 510 at the conveying outlet 504 of the buffer bin 502 above the vibrating screen 3. The linear stepper motor 510 drives the gate 509 to slide, increasing the opening of the conveying outlet 504 and thus increasing the feed to the vibrating screen 3, thereby increasing the amount of seeds entering the buffer bin 502 above the color sorter 4. This ensures stable material supply to color sorter 4, maximizing production line efficiency.

[0056] Furthermore, the buffer box 502 is provided with an inlet 508 for communicating with the conveying pipe 501. A feed baffle 513 is connected inside the buffer box 502. The top of the feed baffle 513 is connected between the inlet 508 and the dust removal port 507. The laser sensor 511 is located on the side of the feed baffle 513 away from the inlet 508. A gap is provided between the feed baffle 513 and the outlet.

[0057] Specifically, such as Figure 3 As shown, a feed baffle 513 is installed inside the buffer box 502, located between the seed inlet 508 and the dust removal outlet 507. Seeds enter through the seed inlet 508 and impact the feed baffle 513. The seeds blocked by the feed baffle 513 rapidly decrease in speed and fall down along the feed baffle 513 into the discharge outlet. Dust-laden air passes through the gap between the feed baffle 513 and the discharge outlet and is discharged through the dust removal outlet 507, thus preventing the dust removal airflow from sucking the seeds away.

[0058] Specifically, the laser sensor 511 is located on the side of the feed baffle 513 away from the seed inlet 508. The feed baffle 513 blocks the seeds to prevent the seeds blown from the seed inlet 508 from passing through the laser sensor 511 and causing errors in the laser sensor 511.

[0059] Furthermore, the feed baffle 513 is rotatably connected to the buffer box 502, and an adjustment motor is connected to the buffer box 502. The adjustment motor drives the feed baffle 513 to rotate and adjust the angle of the feed baffle 513. The adjustment motor is connected to the industrial control computer.

[0060] Specifically, as seeds gradually accumulate in the buffer box 502, the maximum height of the seeds on the side of the feed baffle 513 away from the seed inlet 508 will be limited by the end of the feed baffle 513, preventing them from exceeding the height of the end of the feed baffle 513. By rotatably connecting the feed baffle 513 to the buffer box 502, the industrial control computer sends a control command to the adjusting motor, which drives the feed baffle 513 to rotate, thereby adjusting the height of the end of the feed baffle 513.

[0061] Furthermore, the screen 301 of the vibrating screen 3 is provided with multiple layers, and elastic balls 302 are provided between two adjacent screens 301.

[0062] Specifically, such as Figure 6 As shown, the screen 301 of the vibrating screen 3 can be configured with multiple layers to achieve grading of seeds of different sizes. When the screen 301 is configured with three layers, elastic balls 302 are placed between two adjacent screens 301. As the screen 301 vibrates, the elastic balls 302 bounce and impact the screen 301, shaking out the seeds stuck in the mesh of the screen 301, making the sieving process of the screen 301 smoother.

[0063] Furthermore, a vibration frequency adjustment device 304 and a grating sensor 303 are connected to the vibrating screen 3. The grating sensor 303 is located at the end of the screen mesh 301 of the vibrating screen 3 and is used to sense the seeds rolling on the screen mesh 301. The vibration frequency adjustment device 304 is used to adjust the vibration frequency of the vibrating screen 3. The grating sensor 303 and the vibration frequency adjustment device 304 are respectively connected to the industrial control computer for communication.

[0064] Specifically, such as Figure 4 As shown, the grating sensor 303 is fixedly installed on both sides of the plane of the screen 301, near the last 1 / 3 of the screen surface, to detect the amount of seeds remaining on the screen 301. When the grating sensor 303 detects that all the seeds have entered the bottom screen 301, it considers the end of the screening process to have been reached and automatically switches to the self-cleaning mode to clean the seeds on the screen surface, thus achieving intelligent cleaning of the screen. This prevents seeds remaining on the vibrating screen from mixing into another batch of parent seeds when selecting and grading multiple batches of parent seeds.

[0065] In an alternative embodiment, such as Figure 4 , Figure 5As shown, the vibrating screen 3 includes a drive mechanism 305, a frequency converter, a screen 301, an inclination adjustment mechanism 312, and a frame 307. The drive mechanism 305 is an eccentric shaft linkage mechanism, which can realize variable amplitude vibration of the screen 301. The vibration frequency adjustment device 304 is a frequency converter, which can adjust the vibration frequency of the screen 301 and perform variable frequency vibration according to the instructions issued by the industrial control computer. The screen holes of the screen 301 can be set to different shapes such as round holes, oblong holes, and rectangular holes to adapt to the grading requirements of different crop parent seeds. The frequency converter and the drive mechanism 305 are respectively connected to the industrial control computer for communication. In the self-cleaning mode of the equipment, the vibration frequency of the screen 301 is higher than that in the normal screening mode, thereby reducing the seed residue in the vibrating screen.

[0066] Below the screen 301 is a ball grid 308, with its opening facing upwards. The ball grid 308 is surrounded by a ball frame 309, reinforcing ribs 310, and a protective plate 311. Several elastic balls 302 are placed inside the ball grid 308. During the seed grading machine's operation, the elastic balls 302 continuously impact the screen 301, promoting material stratification on the screen 301 and simultaneously impacting seeds that are clogging the holes, thus achieving a self-cleaning effect. In self-cleaning mode, high-frequency vibration enhances the impact effect of the elastic balls, further improving the cleaning effect of the screen and reducing seed residue in the vibrating screen, making it suitable for the selection and grading of parent seeds. The tilt adjustment mechanism 312 includes a screw jack 313 and a tilt adjustment stepper motor 314. The tilt adjustment stepper motor 314 drives the screw jack up and down to change the tilt angle of the screen 301. For different types of seeds, the optimal vibration frequency and tilt angle of the vibrating screen 3 are different. Therefore, the optimal screening vibration frequency and tilt angle corresponding to the three types of parent seeds (corn, wheat, and rice) and different varieties of each type are recorded in the industrial control computer. Multiple modes can be switched, realizing the universal selection and grading of parent seeds of different types and varieties.

[0067] In an alternative embodiment, such as Figure 1 , Figure 2 As shown, a feeding device is connected to the storage silo 2. The feeding device includes a feeding pipe 202 communicating with the storage silo 2 and a feeding fan 20 connected to the end of the feeding pipe 202 away from the storage silo 2. A feeding trough 201 is connected to the feeding pipe 202. A cylinder 203 and a discharge plate are connected to the discharge port at the bottom of the storage silo 2. The discharge plate is slidably connected to the bottom of the silo. The cylinder 203 drives the discharge plate to slide on the discharge port, thereby adjusting the opening of the discharge port at the bottom of the storage silo 2. Specifically, a discharge device is connected to the discharge port at the bottom of the storage silo 2. The discharge device includes a seed feeding groove wheel 205 and a drive motor 204. The drive motor 204 is a stepper motor. Figure 2 , Figure 10As shown, a seed supply wheel 205 is rotatably connected to the outlet of the hopper. A drive motor 204 drives the seed supply wheel 205 to rotate. The outer wall of the seed supply wheel 205 is provided with multiple conveying grooves 208 distributed circumferentially along the wheel. The seed supply wheel 205 includes a first shaft section 206 and a second shaft section 207 distributed axially. The conveying grooves 208 are respectively disposed on the outer walls of the first shaft section 206 and the second shaft section 207. The conveying grooves 208 extend along the inclined direction of the outer wall of the seed supply wheel 205. The conveying grooves 208 on the first shaft section 206 and the second shaft section 207 are staggered and inclined in opposite directions. A stepper motor drives the seed supply wheel 205 to rotate to control the uniform feeding of seeds.

[0068] In an alternative embodiment, such as Figure 7 , Figure 8 , Figure 9As shown, the color sorter 4 includes a vibrating feeder 401, a seed drop track 402, a seed cleaning air gun 403, a gas spray valve 404, a front camera 405, a rear camera 406, a waste seed baffle 407, a good seed discharge outlet 408, and a waste seed discharge outlet 409. The vibrating feeder 401 includes a feeding box 412, an oscillator 414, and a seed conveying trough 413. The vibrating feeder 401 is located below the inlet of the color sorter 4. The feeding box 412 has a feeding outlet at its bottom. The seed conveying trough 413 is movably connected below the feeding outlet. The oscillator 414 is fixedly connected to the bottom of the seed conveying trough 413. The vibration of the vibrating feeder 401 enables the seeds in the seed conveying trough 413 to fall evenly. The seed drop track 402 is located below the vibrating feeder 401. The seed drop track 402 is evenly divided into 32 channels to ensure the seeds are evenly dispersed when leaving the track, preventing overlapping of the collected seed images. The seed conveying trough 413 is inclined, and the seed cleaning air gun 403 is located on the higher side wall of the trough. High-pressure gas further assists in seed conveying, improving work efficiency and cleaning residual seeds from the trough. A front camera 405 and a rear camera 406 are positioned opposite each other below the seed drop track 402, focusing on a point near the end of the track. Using multi-view vision detection technology, seed images are acquired by the front and rear cameras, and then unqualified seeds are filtered out by a built-in chip. There are 32 gas spray valves 404, one for each side below the seed drop track 402. The gas spray valves 404 are controlled by a chip to blow away unqualified seeds. The waste seed baffle 407 blocks unqualified seeds, which then fall to the waste seed discharge outlet 409, which is connected to the fourth outlet 411. Qualified seeds fall to the good seed discharge outlet 408, which is connected to the third outlet 410. By setting a seed cleaning air gun 403 at the inlet of the seed cleaner, the efficiency of seeds entering the seed cleaner is increased, and residual seeds at the inlet are cleaned. Positive pressure pneumatic conveying avoids seed residue during conveying between devices, resulting in a 100% self-cleaning rate with no residual seeds on the entire production line. Compared to traditional seed processing production lines, this invention achieves complete self-cleaning of batch parent seed processing production lines, with high production efficiency and intelligence, and easy equipment cleaning.

[0069] In an alternative embodiment, such as Figure 1As shown, the negative pressure dust collector 6 includes a dust collector fan 601, a filter element 602, and a dust collector duct 603. The dust collector fan 601 and filter element 602 are located at the very end of the production line. The dust collector fan 601 is connected to the filter element 602 via the dust collector duct 603, and the filter element 602 is connected to the dust collection port 507 of each buffer box 502 via the dust collector duct 603. The filter element 602 is used to absorb dust and debris from the production line duct. The dust collector fan 601 provides negative pressure to the filter element 602, thereby providing suction to the dust collection port 507 of each buffer box 502.

[0070] In an alternative embodiment, such as Figure 1 As shown, the industrial control computer includes a touch screen 105, a main control cabinet 1, and a control unit mounted on the main control cabinet 1. The computer issues corresponding operating commands to the frequency converter, linear stepper motor 510, drive motor 204, and tilt-adjustable stepper motor 314. The main control cabinet 1 is equipped with a 24V DC power supply 101, a stepper motor driver 102, an air switch 103, and a relay 104, and is electrically connected to the entire production line. The human-machine interface of the touch screen 105 allows for control of the production line, modification of various parameters, switching between different operating modes, and display of data monitored by various sensors. The touch screen 105 is mounted on a vertical support column at the front of the production line, facilitating real-time monitoring of the production line status and operation by operators.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A seed selection and grading production line, characterized in that, This includes industrial control computers, storage silos, air conveying duct assemblies, vibrating screens, negative pressure dust collectors, and color sorters; The vibrating screen is equipped with a first outlet for discharging qualified seeds. The discharge port of the storage silo is connected to the feed end of the vibrating screen, and the first outlet of the vibrating screen is connected to the feed inlet of the color sorter through the air conveying pipe assembly. The air delivery pipe assembly includes a delivery pipe and a buffer box. The delivery pipe is connected to the buffer box. The delivery pipe is provided with a delivery inlet for seed input, and the buffer box is provided with a delivery outlet for seed discharge. The top of the buffer box is provided with a dust removal port, and the negative pressure dust collector's through pipe is connected to the dust removal port and provides negative pressure to the dust removal port; The buffer box is equipped with multiple pairs of laser sensors for real-time monitoring of the seed layer height within the buffer box; each pair of laser sensors is distributed vertically, and each pair of laser sensors includes a laser emitter and a laser receiver disposed opposite to the laser emitter, and the laser emitter and the laser receiver are respectively communicatively connected to the industrial control computer; The buffer box is provided with a seed inlet for communicating with the conveying pipe. A feed baffle is connected inside the buffer box. The top of the feed baffle is connected between the seed inlet and the dust removal port. The laser sensor is located on the side of the feed baffle away from the seed inlet. A gap is provided between the feed baffle and the discharge port. The feed baffle can prevent the seeds blown from the seed inlet from passing through the laser sensor and causing errors in the laser sensor. The feed baffle is rotatably connected to the buffer box, and an adjustment motor is connected to the buffer box. The adjustment motor drives the feed baffle to rotate and adjust the angle of the feed baffle. The adjustment motor is communicatively connected to the industrial control computer.

2. The seed selection and grading production line according to claim 1, characterized in that, It also includes a first hopper and a second hopper. The vibrating screen is provided with a second outlet for discharging unqualified seeds. The color sorter is provided with a third outlet for discharging qualified seeds and a fourth outlet for discharging unqualified seeds. The third outlet is connected to the inlet of the first hopper through the air conveying pipe assembly. The fourth outlet and the second outlet are respectively connected to the inlet of the second hopper through the air conveying pipe assembly.

3. The seed selection and grading production line according to claim 2, characterized in that, The air delivery pipe assembly also includes a positive pressure fan, the air outlet of which is connected to the end of the delivery pipe away from the buffer box.

4. The seed selection and grading production line according to claim 1, characterized in that, A gate and a linear stepper motor that drive the gate to slide are slidably connected to the conveying outlet. The gate slides to block the conveying outlet. The linear stepper motor is communicatively connected to the industrial control computer.

5. The seed selection and grading production line according to claim 1, characterized in that, A weight sensor is fixedly connected to the bottom of the buffer box, and the weight sensor is communicatively connected to the industrial control computer.

6. The seed selection and grading production line according to claim 1, characterized in that, The vibrating screen has multiple layers of screen mesh, and elastic balls are placed between adjacent screen meshes.

7. The seed selection and grading production line according to claim 6, characterized in that, The vibrating screen is connected to a vibration frequency adjustment device and a grating sensor. The grating sensor is located at the end of the screen of the vibrating screen and is used to sense the seeds rolling on the screen. The vibration frequency adjustment device is used to adjust the vibration frequency of the vibrating screen; The grating sensor and the frequency adjustment device are respectively connected to the industrial control computer for communication.

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