Seed selecting and grading production line

Abstract

The invention provides a seed selecting and grading production line, which relates to the field of seed sorting and comprises an industrial personal computer, a storage bin, a pneumatic conveying pipe group, a vibrating screen, a negative pressure dust remover and a color sorter, a first outlet for discharging qualified seeds is formed in the vibrating screen; the discharge port of the storage bin is communicated with the feed end of the vibrating screen through an air conveying pipe group, and the first outlet of the vibrating screen is communicated with the feed port of the color sorter through an air conveying pipe group; the air conveying pipe set comprises a conveying pipe and a temporary storage box, a dust removal opening is formed in the top of the temporary storage box, and the negative pressure dust remover communicates with the dust removal opening through a pipeline and provides negative pressure for the dust removal opening. The vibrating screen is arranged to classify the sizes of the seeds, and the seeds with qualified sizes are conveyed to the color sorter through the air conveying pipe set to be subjected to color sorting. While the air conveying pipe set conveys the seeds, light component impurities such as dust in the seeds are removed, and cleaning and purification of the seeds are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of seed sorting, and in particular to a seed selection and grading production line. Background Art

[0002] In recent years, as the country has paid more attention to agriculture, seeds, as the "chip" of agricultural development, are the source of life for agriculture. "Seed Engineering" has become an important goal for my country to achieve agricultural development in the new era. High-quality seed production and propagation processes are an important guarantee for improving seed quality. High-quality seeds can significantly improve the germination rate and uniformity of seedlings. The use of single-seed precision sowing by machine can reduce the sowing amount and reduce costs. Full and high-quality seeds make the later crops grow more uniformly, facilitate mechanical emasculation and mechanical harvesting, and improve work efficiency.

[0003] Mechanization of the seed industry is an important foundation and prerequisite for the modernization of the seed industry. With the continuous development of mechanization in my country's seed industry, the requirements for mechanized operations are getting higher and higher, and it is developing in the direction of serialization, specialization, refinement, information automation and intelligence. The selection and grading of parent seeds before sowing in integrated and intelligent seed production and breeding has become a necessary development and requirement in the industry.

[0004] At present, in the seed production and breeding stage, the equipment for selecting and grading parent seeds of grain crops such as corn, wheat and rice before sowing is mostly general-purpose machines for commercial seed cleaning, such as air sorters and color sorters, which have problems such as poor self-cleaning quality and single grading and detection methods. Summary of the invention

[0005] The invention provides a seed selection and grading production line, which is used to solve the defects of poor self-cleaning quality and single grading and detection means in the prior art.

[0006] According to the present invention, a seed selection and grading production line is provided, which is characterized by comprising an industrial computer, a storage bin, an air delivery 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 material outlet of the storage bin and the material feed end of the vibrating screen, and the first outlet of the vibrating screen and the material feed inlet of the color sorter are respectively connected through the air delivery pipe group; The air delivery pipe group 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; A dust removal port is provided on the top of the cache box, and the negative pressure dust collector clearance pipe is connected to the dust removal port and provides negative pressure to the dust removal port.

[0007] A seed selection and grading production line provided according to the present invention also includes a first silo and a second silo, 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 silo through the air delivery pipe group, and the fourth outlet and the second outlet are respectively connected to the inlet of the second silo through the air delivery pipe group.

[0008] According to a seed selection and grading production line provided by the present invention, the air delivery pipe group also includes a positive pressure fan, and the air outlet of the positive pressure fan is connected to the end of the delivery pipe away from the buffer box.

[0009] According to a seed selection and grading production line provided by the present invention, a gate plate and a linear stepper motor driving the gate plate to slide are slidably connected to the conveying outlet, the sliding of the gate plate blocks the conveying outlet, and the linear stepper motor is communicatively connected to the industrial computer.

[0010] According to a seed selection and grading production line provided by the present invention, a plurality of pairs of laser sensors are arranged in the cache box, each pair of the laser sensors is distributed in a vertical direction, each pair of the laser sensors includes a laser transmitter and a laser receiver arranged opposite to the laser transmitter, and the laser transmitter and the laser receiver are respectively connected to the industrial computer for communication.

[0011] 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 cache box, and the weight sensor is communicatively connected to the industrial computer.

[0012] According to a seed selection and grading production line provided by the present invention, a seed inlet for communicating with the conveying pipe is provided on the cache box, a feed baffle is connected inside the cache 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, and a gap is provided between the feed baffle and the discharge port.

[0013] According to a seed selection and grading production line provided by the present invention, the feed baffle is rotatably connected to the cache box, an adjusting motor is connected to the cache box, the adjusting motor drives the feed baffle to rotate to adjust the angle of the feed baffle, and the adjusting motor is communicatively connected to the industrial computer.

[0014] According to a seed selection and grading production line provided by the present invention, the vibrating screen has multiple layers of screens, and elastic balls are arranged between two adjacent screens.

[0015] According to a seed selection and grading production line provided by the present invention, the vibration screen is connected with 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 detection screen; The vibration frequency adjusting device is used to adjust the vibration frequency of the vibrating screen; The grating sensor and the vibration frequency adjustment device are respectively connected to the industrial computer for communication.

[0016] The present invention provides a seed selection and grading production line, which grades the seed size by setting a vibrating screen, and transports the seeds of qualified size to a color sorter for color sorting through an air delivery pipe group. While the air delivery pipe group transports the seeds, dust and other light component impurities in the seeds are removed, thereby achieving seed cleaning and purification. The seeds are transported through two air delivery pipe groups before color sorting, completing two dust removal and purifications, further improving the color sorting effect of the color sorter. Self-cleaning and multi-level color sorting of seeds are achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the connection relationship of a seed selection and grading production line provided by the present invention.

[0019] Figure 2 The present invention is a schematic structural diagram of a storage bin of a seed selection and grading production line provided by the present invention.

[0020] Figure 3 It is a structural schematic diagram of a cache box of a seed selection and grading production line provided by the present invention.

[0021] Figure 4 The present invention provides a schematic diagram of the connection relationship of grating sensors in a vibrating screen of a seed selection and grading production line.

[0022] Figure 5 The present invention is a schematic diagram of the structure of a vibrating screen for a seed selection and grading production line.

[0023] Figure 6 The present invention provides a schematic diagram of the connection relationship of the screen mesh of the seed selection and grading production line.

[0024] Figure 7The present invention provides a structural schematic diagram of a color sorter for a seed selection and grading production line.

[0025] Figure 8 The present invention is a schematic structural diagram of a vibrating feeder for a seed selection and grading production line.

[0026] Fig. 9 The present invention provides a schematic diagram of the connection relationship of a color sorter of a seed selection and grading production line.

[0027] Fig.10 The present invention is a schematic diagram of the structure of a seed supplying groove wheel of a seed selection and grading production line provided by the present invention.

[0028] Reference numerals: 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. Driving motor; 205. Seed supply groove wheel; 206. First shaft section; 207. Second shaft section; 208. Conveying trough; 3. Vibrating screen; 301. Screen; 302. Elastic ball; 303. Grating sensor; 304. Frequency adjustment device; 305. Driving mechanism; 306. Second outlet; 307. Rack; 308. Ball grid; 309. Ball rack; 310. Reinforcement rib; 311. Guard plate; 312. Tilt adjustment mechanism; 313. Screw lifter; 314. Tilt adjustment stepper motor; 315. First outlet; 4. Color sorter; 401. Vibrating feeder; 402. Seed slide track; 403. Seed cleaning air gun; 404. Gas spray valve; 405. Front camera; 406. Rear camera; 407. Waste seed baffle; 408. Good seed outlet; 409. Waste seed outlet; 410. Third outlet; 411. Fourth outlet; 412. Feed box; 413. Seed conveying trough; 414. Oscillator; 5. Positive pressure fan; 501. Conveying pipe ; 502, cache 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 silo; 71, second silo. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are 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.

[0030] The features of the terms "first" and "second" in the specification and claims of the present invention may include one or more of the features explicitly or implicitly. In the description of the present invention, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects associated before and after are in an "or" relationship.

[0031] In the description of the present invention, it needs to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0032] Combine the following Figure 1-Figure 10 The seed selection and grading production line of the present invention is described.

[0033] The present invention provides a seed selection and grading production line, comprising an industrial computer, a storage bin 2, an air delivery pipe group, 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 discharge port of the storage bin 2 and the feed end of the vibrating screen 3, and the first outlet 315 of the vibrating screen 3 and the feed port of the color sorter 4 are respectively connected through the air delivery pipe group. The air delivery pipe group includes a conveying pipe 501 and a buffer box 502, the conveying pipe 501 is connected to the buffer box 502, the conveying pipe 501 is provided with a conveying inlet 503 for seed input, and the buffer box 502 is provided with a conveying outlet 504 for seed discharge. A dust removal port 507 is provided on the top of the buffer box 502, and the clearance pipe of the negative pressure dust collector 6 is connected to the dust removal port 507 and provides negative pressure to the dust removal port 507.

[0034] Specifically, Figure 1 , Figure 3As shown, air delivery pipe groups are respectively arranged between the discharge port of the storage bin 2 and the feed end of the vibrating screen 3, and between the first outlet 315 of the vibrating screen 3 and the feed port of the color sorter 4. The conveying inlet 503 on the air delivery pipe group between the storage bin 2 and the vibrating screen 3 is connected to the discharge port of the storage bin 2, and the conveying outlet 504 is arranged above the vibrating screen 3. The conveying inlet 503 on the air delivery pipe group between the vibrating screen 3 and the color sorter 4 is connected to the first outlet 315, and the conveying outlet 504 is connected to the feed port of the color sorter 4. The negative pressure dust collector 6 provides negative pressure to the two air delivery pipe groups through the dust removal port 507, thereby providing flowing air in the conveying pipe 501. The seeds discharged from the discharge port of the storage bin 2 are transported to the feed end above the vibrating screen 3 by the air delivery pipe group, and are screened by the vibrating screen 3 to remove seeds of unqualified size. The qualified seeds screened by the vibrating screen 3 are transported to the feed port of the color sorter 4 by the air delivery pipe group, and the seeds with unqualified appearance such as shrunken, moldy, etc. are removed by the color sorter 4, thereby achieving the simultaneous sorting of seed size and appearance. On the other hand, the dust in the seeds is transported to the negative pressure dust collector 6 through the pipeline from the dust removal port 507 with the air for dust removal.

[0035] Specifically, the screen 301 of the vibrating screen 3 can be set to three layers, and the mesh size of the screen 301 decreases from top to bottom. The seeds can be divided into four levels, namely small, medium, large and extra-large seeds. Of course, more layers of screens 301 can be set and the seeds can be divided into more levels. When the seeds are divided into four levels, small and extra-large seeds are collectively referred to as unqualified seeds, and medium and large seeds are qualified seeds. The first color sorter 4 and the second color sorter 4 are respectively set for medium and large seeds for color sorting. The medium-sized seeds and large-sized seeds are respectively transported by two air delivery pipe groups, and the medium-sized seeds are sent to the first color sorter 4 for color sorting, and the large-sized seeds are sent to the second color sorter 4 for color sorting. When the size of qualified seeds is set to multiple levels, a color sorter 4 is set for each level for color sorting.

[0036] The present invention provides a seed selection and grading production line, which grades the seed size by setting a vibrating screen 3, and transports the seeds of qualified size to a color sorter 4 for color sorting through an air delivery pipe group. While the air delivery pipe group transports the seeds, dust and other light component impurities in the seeds are removed, thereby achieving the cleaning and purification of the seeds. The seeds are transported through two air delivery pipe groups before color sorting, completing two dust removal and purification, further improving the color sorting effect of the color sorter 4. Self-purification and multi-level color sorting of seeds are achieved.

[0037] 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 duct group, and the fourth outlet 411 and the second outlet 306 are respectively connected to the inlet of the second silo 71 through the air duct group.

[0038] Specifically, Figure 1 , Figure 4 , Figure 7 As shown, the first silo 7 is provided to collect and store the qualified seeds, and the second silo 71 is provided to collect and store the unqualified seeds. The qualified seeds after color sorting are transported from the third outlet 410 to the entrance of the first silo 7 by the air delivery pipe group, so that the qualified seeds are transported to the first silo 7 for storage. The unqualified seeds sieved out of the vibrating screen 3 are transported from the second outlet 306 to the entrance of the second silo 71 by the air delivery component, and the unqualified seeds sorted out by the color sorter 4 are transported from the fourth outlet 411 to the entrance of the second silo 71 by the air delivery component, so as to realize the unified recovery and storage of unqualified seeds.

[0039] Specifically, Figure 1 As shown, when two seeds are screened out by the vibrating screen 3, a color sorter 4 is set for each level to perform color sorting, and a corresponding first silo 7 is set for each color-sorted qualified seed. When multiple seeds are screened out by the vibrating screen 3, a corresponding number of color sorters 4 and first silos 7 are set for color sorting and storage.

[0040] Furthermore, the air delivery pipe group also includes a positive pressure fan 5, and the air outlet of the positive pressure fan 5 is connected to the end of the delivery pipe 501 away from the buffer box 502.

[0041] Specifically, Figure 1 As shown, a positive pressure fan 5 is connected to the end of the delivery pipe 501 away from the buffer box 502, and the positive pressure air is used to provide the delivery pipe 501 with an airflow flowing toward the buffer box 502, thereby improving the delivery effect of the air delivery pipe group. When only the negative pressure dust collector 6 is used to provide negative pressure airflow at the dust removal port 507 for delivery, the negative pressure pneumatic delivery pipe 501 is connected to the delivery inlet 503 through a joint. When the positive pressure fan 5 and the negative pressure dust collector 6 are used to provide airflow for delivery, the positive pressure pneumatic delivery pipe 501 is connected to the delivery inlet 503 through a joint.

[0042] Furthermore, a gate plate 509 and a linear stepping motor 510 driving the gate plate 509 to slide are slidably connected to the conveying outlet 504 , the gate plate 509 slides to block the conveying outlet 504 , and the linear stepping motor 510 is communicatively connected to the industrial computer.

[0043] Specifically, Figure 3 As shown, the linear stepper motor 510 is connected to the industrial computer for communication. The industrial computer sends a control instruction to the linear stepper motor 510 to drive the gate plate 509 to slide, thereby adjusting the opening of the delivery outlet 504 .

[0044] Furthermore, a plurality of pairs of laser sensors 511 are arranged in the cache box 502, each pair of the laser sensors 511 is distributed in the vertical direction, and each pair of the laser sensors 511 includes a laser transmitter and a laser receiver arranged opposite to the laser transmitter, and the laser transmitter and the laser receiver are respectively connected to the industrial computer for communication.

[0045] Specifically, Figure 4 As shown, the laser sensor 511 is installed inside the cache box 502, and five pairs of laser sensors 511 are correspondingly arranged for each cache box 502. Each pair of laser sensors 511 includes a laser transmitter and a laser receiver arranged opposite to the laser transmitter. When the amount of seeds entering the cache box 502 is greater than the amount of seeds discharged from the delivery outlet 504, the seeds will gradually accumulate in the cache box 502. When the seeds block the laser transmitter and the laser receiver arranged opposite to it, the laser sensor 511 completes the collection of seed height and monitors the height of the seed layer in the cache box 502 in real time. The seed height signal sensed by the laser sensor 511 is transmitted to the industrial computer.

[0046] Furthermore, a weight sensor 512 is fixedly connected to the bottom of the cache box 502, and the weight sensor 512 is connected to the industrial computer for communication. By setting four weight sensors 512 at the bottom of each cache box 502, the total weight of the seeds in the cache box 502 is monitored in real time, and the monitored seed weight signal is transmitted to the industrial computer through the communication connection.

[0047] Specifically, the upper limit setting value and the lower limit setting value of the seed amount are set at the industrial computer, and the upper limit setting value and the lower limit setting value can be set with reference to the weight signal and the height signal of the seed. When the seed amount in the buffer box 502 above the color sorter 4 is higher than the upper limit setting value, the industrial computer controls the linear stepper motor 510 at the delivery outlet 504 of the buffer box 502 above the vibrating screen 3. The linear stepper motor 510 drives the gate plate 509 to slide, reduces the opening of the delivery outlet 504, thereby reducing the feeding to the vibrating screen 3 and reducing the amount of seeds entering the buffer box 502 above the color sorter 4. When the seed amount in the buffer box 502 above the color sorter 4 is lower than the lower limit setting value, the industrial computer controls the linear stepper motor 510 at the delivery outlet 504 of the buffer box 502 above the vibrating screen 3. The linear stepper motor 510 drives the gate plate 509 to slide, increases the opening of the delivery outlet 504, thereby increasing the feeding to the vibrating screen 3 and increasing the amount of seeds entering the buffer box 502 above the color sorter 4. The stability of the material feeding to the color sorter 4 is achieved, maximizing the efficiency of the production line.

[0048] Furthermore, the cache box 502 is provided with a seed inlet 508 for communicating with the conveying pipe 501, and a feed baffle 513 is connected to the cache box 502. The top of the feed baffle 513 is connected between the seed 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 seed inlet 508, and a gap is set between the feed baffle 513 and the discharge port.

[0049] Specifically, Figure 3 As shown, a feed baffle 513 is provided in the buffer box 502 between the seed inlet 508 and the dust removal port 507. Seeds enter from the seed inlet 508 and hit the feed baffle 513. The speed of the seeds blocked by the feed baffle 513 decreases rapidly, and the seeds after the speed decrease fall into the discharge port along the feed baffle 513. The dust-carrying air passes through the gap between the feed baffle 513 and the discharge port and is discharged from the dust removal port 507, thereby preventing the dust removal airflow from sucking away the seeds.

[0050] 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 .

[0051] Furthermore, the feed baffle 513 is rotatably connected to the buffer box 502 , and an adjusting motor is connected to the buffer box 502 . The adjusting motor drives the feed baffle 513 to rotate to adjust the angle of the feed baffle 513 , and the adjusting motor is communicatively connected to the industrial computer.

[0052] Specifically, due to the gradual accumulation of seeds in the buffer box 502, the highest 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 and cannot be higher than the height of the end of the feed baffle 513. By rotatably connecting the feed baffle 513 with the buffer box 502, the industrial computer sends a control instruction to the regulating motor, and the regulating motor drives the feed baffle 513 to rotate, thereby adjusting the height of the end of the feed baffle 513.

[0053] Furthermore, the screens 301 of the vibrating screen 3 are provided with multiple layers, and elastic balls 302 are provided between two adjacent screens 301 .

[0054] Specifically, Figure 6 As shown, the screen 301 of the vibrating screen 3 can be set to multiple layers to achieve classification of seeds of different sizes. When the screen 301 is set to three layers, an elastic ball 302 is set between two adjacent screens 301. As the screen 301 vibrates, the elastic ball 302 bounces and hits the screen 301, shaking out the seeds stuck in the mesh of the screen 301, making the screening of the screen 301 smoother.

[0055] Furthermore, the vibration screen 3 is connected with a vibration frequency adjustment device 304 and a grating sensor 303. The grating sensor 303 is located at the end of the screen 301 of the vibration screen 3, and is used to sense the seeds rolling on the detection screen 301. The vibration frequency adjustment device 304 is used to adjust the vibration frequency of the vibration screen 3, and the grating sensor 303 and the vibration frequency adjustment device 304 are respectively connected to the industrial computer for communication.

[0056] Specifically, Figure 4 As shown, the grating sensor 303 is fixedly installed on both sides of the plane of the screen 301, near the bottom 1 / 3 of the screen surface, to detect the residual seeds on the screen 301. When the grating sensor 303 detects that all the seeds have entered the bottom screen 301, it is considered that the screening has reached the end, and the device automatically switches to the self-cleaning mode to clean the seeds on the screen surface, realizing the intelligent cleaning of the screen. When selecting and grading multiple batches of parent seeds, it is prevented that the seeds remaining on the vibrating screen are mixed into the parent seeds of another batch.

[0057] In an alternative embodiment, if Figure 4 , Figure 5As shown, the vibrating screen 3 includes a driving mechanism 305, a frequency converter, a screen 301, an inclination adjustment mechanism 312 and a frame 307. The driving mechanism 305 is an eccentric shaft connecting rod mechanism, which can realize variable amplitude vibration of the screen 301. The vibration frequency adjustment device 304 is set as a frequency converter, and the frequency converter can adjust the vibration frequency of the screen 301, and perform variable frequency vibration according to the instructions issued by the industrial computer. The sieve holes of the screen 301 can be set to different shapes such as round holes, oblong holes and rectangular holes to meet the grading requirements of different crop parent seeds. The frequency converter and the driving mechanism 305 are respectively connected to the industrial computer for communication. In the self-cleaning mode of the equipment, the vibration frequency of the screen 301 is higher than the normal screening mode, thereby reducing the residue of seeds in the vibrating screen.

[0058] A ball grid 308 is arranged below the screen 301. The ball grid 308 opens upward and is surrounded by a ball rack 309, a reinforcing rib 310 and a guard plate 311. A number of elastic balls 302 are placed in the ball grid 308. The elastic balls 302 continuously hit the screen 301 during the operation of the seed grading machine, promote the stratification of materials on the screen 301, and hit the seeds blocking the holes at the same time, playing the role of self-cleaning and cleaning. In the self-cleaning mode, the high-frequency vibration improves the impact effect of the elastic ball, further improves the cleaning effect of the screen, and reduces the residue of seeds in the vibrating screen to adapt to the selection and grading of parent seeds. The inclination adjustment mechanism 312 includes a screw lifter 313 and an inclination adjustment stepper motor 314. The inclination adjustment stepper motor 314 drives the screw to move up and down to change the inclination of the screen 301. For different types of seeds, the optimal vibration frequency and inclination angle of the vibrating screen 3 are different. Therefore, the optimal screening vibration frequencies and tilt angles corresponding to the three types of parent seeds, corn, wheat and rice, and the seeds of different varieties of each type are recorded in the industrial computer, and multiple modes are available for switching, thus realizing the universal selection and grading of parent seeds of different types and varieties.

[0059] In an optional embodiment, if Figure 1 , Figure 2 As shown, the storage bin 2 is connected to a feeding device, which includes a feeding pipe 202 in communication with the storage bin 2 and a feeding fan 20 connected to the feeding pipe 202 at one end away from the storage bin 2, and 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 bin 2, and the discharge plate is slidably connected to the bottom of the bin. 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 bin 2. Specifically, a discharge device is connected to the discharge port at the bottom of the storage bin 2, and the discharge device includes a seed supply groove wheel 205 and a drive motor 204, and the drive motor 204 is configured as a stepping motor. As shown Figure 2 , Fig.10As shown, the seed supply groove wheel 205 is rotatably connected to the outlet of the silo, and the driving motor 204 is used to drive the seed supply groove wheel 205 to rotate. The outer wall of the seed supply groove wheel 205 is provided with a plurality of conveying grooves 208 distributed along the circumference of the seed supply groove wheel 205. The seed supply groove wheel 205 includes a first shaft section 206 and a second shaft section 207 distributed along the axial direction, and the conveying grooves 208 are respectively arranged on the outer walls of the first shaft section 206 and the second shaft section 207. The conveying grooves 208 extend along the inclination direction of the outer wall of the seed supply groove wheel 205, and the conveying grooves 208 on the first shaft section 206 and the second shaft section 207 are staggered and in opposite inclination directions. The stepping motor drives the seed supply groove wheel 205 to rotate to control the uniform feeding of seeds.

[0060] In an alternative embodiment, if Figure 7 , Figure 8 , Fig. 9As shown, the color sorter 4 includes a vibrating feeder 401, a seed sliding 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 port 408 and a waste seed discharge port 409. The vibrating feeder 401 includes a feed box 412, an oscillator 414 and a seed conveying trough 413. The vibrating feeder 401 is arranged below the entrance of the color sorter 4, a feed outlet is arranged at the bottom of the feed box 412, a seed conveying trough 413 is movably connected below the feed outlet, and an oscillator 414 is fixedly connected to the bottom of the seed conveying trough 413. The seeds in the seed conveying trough 413 are uniformly dropped by the vibration of the vibrating feeder 401. The seed sliding track 402 is arranged below the vibrating feeder 401, and the seed sliding track 402 is evenly divided into 32 slideways, so that the seeds are kept in an evenly dispersed state when leaving the seed sliding track 402, and the collected seed images are prevented from overlapping. The seed conveying trough 413 is arranged at an angle, and the seed cleaning air gun 403 is arranged on the side wall of the higher side of the seed conveying trough 413, and the high-pressure gas is used to further assist the conveying of seeds, improve the working efficiency, and play a role in cleaning the residual seeds on the seed conveying trough 413. The front camera 405 and the rear camera 406 are relatively arranged below the seed sliding track 402, and the front and rear focus on a point near the end of the track. The multi-eye visual detection technology is adopted to obtain the seed image through the front camera 405 and the rear camera 406, and then the unqualified seeds are screened through the built-in chip; there are 32 gas spray valves 404, which are arranged one by one on the side and below the seed sliding track 402, and the gas spray valve 404 is controlled by the chip to blow air to blow away the unqualified seeds. The waste seed baffle 407 blocks the unqualified seeds and then drops them to the waste seed outlet 409, which is connected to the fourth outlet 411. The qualified seeds fall to the good seed outlet 408, which is connected to the third outlet 410. By arranging the seed cleaning air gun 403 at the entrance of the seed selection machine, the efficiency of seeds entering the seed selection machine is increased, the residual seeds at the entrance are cleaned, and the positive pressure pneumatic conveying is used to avoid the occurrence of seed residues during the conveying between the equipment. There is no residual seed in the whole production line, and the self-purification rate can reach 100%. Compared with the traditional seed processing production line, the present invention realizes the complete self-purification of the batch parent seed processing production line, with high production efficiency and intelligence, and easy cleaning of equipment.

[0061] In an alternative embodiment, if Figure 1As shown, the negative pressure dust collector 6 includes a dust removal fan 601, a filter element 602 and a dust removal pipe 603. The dust removal fan 601 and the filter element 602 are arranged at the end of the production line. The dust removal fan 601 is connected to the filter element 602 through the dust removal pipe 603. The filter element 602 is connected to the dust removal port 507 of each buffer box 502 through the dust removal pipe 603. The filter element 602 is used to absorb dust and debris in the production line pipe. The dust removal fan 601 provides negative pressure for the filter element 602, thereby providing suction to the dust removal port 507 of each buffer box 502.

[0062] In an alternative embodiment, if Figure 1 As shown, the industrial computer includes a touch screen 105, a main control cabinet 1 and a control panel installed in the main control cabinet 1 to monitor the working status and issue corresponding working instructions to the frequency converter, the linear stepper motor 510, the drive motor 204 and the inclination adjustment stepper motor 314. The main control cabinet 1 is provided with a 24V DC power supply 101, a stepper motor driver 102, an air switch 103 and a relay 104, which are connected to the entire production line by circuits. The human-machine interaction interface of the touch screen 105 can control the production line, modify various parameters and switch various working modes, and can also display the data monitored by each sensor. The touch screen 105 is installed on the vertical support column at the front end of the production line, so that the operator can view the status and operation of the production line in real time.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions 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: Including industrial computers, storage bins, air ducts, vibrating screens, negative pressure dust collectors and color sorters; The vibrating screen is provided with a first outlet for discharging qualified seeds; The material outlet of the storage bin and the material feed end of the vibrating screen, and the first outlet of the vibrating screen and the material feed inlet of the color sorter are respectively connected through the air delivery pipe group; The air delivery pipe group 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; A dust removal port is provided on the top of the cache box, and the negative pressure dust collector clearance pipe is connected to the dust removal port and provides negative pressure to the dust removal port.

2. The seed selection and grading production line according to claim 1, characterized in that: It also includes a first silo and a second silo, 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 silo through the air delivery pipe group, and the fourth outlet and the second outlet are respectively connected to the inlet of the second silo through the air delivery pipe group.

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

4. The seed selection and grading production line according to claim 1, characterized in that: A gate plate and a linear stepping motor driving the gate plate to slide are slidably connected to the conveying outlet, the sliding of the gate plate blocks the conveying outlet, and the linear stepping motor is communicatively connected to the industrial computer.

5. The seed selection and grading production line according to claim 1, characterized in that: A plurality of pairs of laser sensors are arranged in the cache box, each pair of the laser sensors is distributed in a vertical direction, each pair of the laser sensors comprises a laser transmitter and a laser receiver arranged opposite to the laser transmitter, and the laser transmitter and the laser receiver are respectively connected to the industrial computer for communication.

6. 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 cache box, and the weight sensor is communicatively connected to the industrial computer.

7. The seed selection and grading production line according to claim 5, characterized in that: The cache box is provided with a seed inlet for communicating with the conveying pipe, a feed baffle is connected inside the cache 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, and a gap is provided between the feed baffle and the discharge port.

8. The seed selection and grading production line according to claim 7, characterized in that: The feed baffle is rotatably connected to the cache box, an adjusting motor is connected to the cache box, the adjusting motor drives the feed baffle to rotate to adjust the angle of the feed baffle, and the adjusting motor is communicatively connected to the industrial computer.

9. The seed selection and grading production line according to claim 1, characterized in that: The vibrating screen has multiple layers of screens, and elastic balls are arranged between two adjacent screens.

10. The seed selection and grading production line according to claim 9, characterized in that: The vibrating screen is connected with a vibration frequency regulating 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 detection screen; The vibration frequency adjusting device is used to adjust the vibration frequency of the vibrating screen; The grating sensor and the vibration frequency adjustment device are respectively connected to the industrial computer for communication.

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