A corn seed sorter for reducing mechanical damage

Abstract

The present invention discloses a corn seed sorter for reducing mechanical damage, which comprises a frame. A feeding hopper is fixedly connected to the frame. A number of negative pressure adsorption feeding mechanisms are installed on the frame. The negative pressure adsorption feeding mechanisms are communicated with the feeding hopper. The negative pressure adsorption feeding mechanisms are communicated with a material conveying mechanism. The negative pressure adsorption feeding mechanisms are communicated with a blower. The negative pressure adsorption feeding mechanisms are communicated with the air inlet of the blower. The detection assembly includes a detection box body which is fixedly connected to the frame. A near-infrared hyperspectral detector and a machine vision detector are installed in the detection box body. The near-infrared hyperspectral detector and the machine vision detector are located above the material conveying mechanism. An air-blowing sorting mechanism is arranged on the frame. The air-blowing sorting mechanism is communicated with the air outlet of the blower. It effectively solves the problem of mechanical damage to corn seeds during the feeding and sorting processes of traditional seed sorters and improves the seed qualification rate.

Description

Technical Field

[0001] The present invention relates to the technical field of seed sorting devices, and particularly to a corn seed sorter for reducing mechanical damage. Background Art

[0002] In the agricultural field, the quality of corn seeds has an important impact on agricultural production results and economic development. High-quality corn seeds are the key to achieving high and stable yields. During the production process of corn seeds, in order to obtain high-quality seeds, unqualified seeds need to be removed. Traditional methods include manual or mechanical sorting. The currently widely used seed automatic selection technology mainly relies on the mechanical and physical characteristics of seeds, such as shape size, density, grain weight, floating speed, and surface smoothness, to perform cleaning based on the differences in the physical field and appearance. However, the traditional sorting method has a significant problem, that is, the secondary mechanical damage rate to seeds is relatively high, about 25%. The high damage rate limits the expansion of the seed production scale and the improvement of quality, bringing an economic burden to farmers and agricultural enterprises.

[0003] With the progress of technology, the application and development of seed automatic detection and sorting machines are becoming increasingly widespread. Although the sorting efficiency is improved, the damage caused by the machine to the seeds during the sorting process leads to waste of resources. Taking the seed sorter using hyperspectral imaging detection technology as an example, although the problem of material damage is improved in the screening link, the impact damage problem between the mechanical structure and the material is still not solved in the feeding link and the sorting link. The impact damage results in a reduction in the utilization rate of qualified materials. Due to mechanical damage, the seeds cannot meet the expected quality standards and are misjudged as unqualified seeds and removed.

[0004] Therefore, a corn seed sorter for reducing mechanical damage is proposed to solve the above problems. Summary of the Invention

[0005] The object of the present invention is to provide a corn seed sorter for reducing mechanical damage, including:

[0006] A frame, on which a feeding hopper is fixedly connected. A number of negative pressure adsorption feeding mechanisms are installed on the frame. The negative pressure adsorption feeding mechanisms are communicated with the feeding hopper. The negative pressure adsorption feeding mechanisms are communicated with a material conveying mechanism. The negative pressure adsorption feeding mechanisms are communicated with a fan, and the negative pressure adsorption feeding mechanisms are communicated with the air inlet of the fan;

[0007] A detection component, which includes a detection box body fixedly connected to the frame. An infrared hyperspectral detector and a machine vision detector are installed in the detection box body. The infrared hyperspectral detector and the machine vision detector are located above the material conveying mechanism. An air blowing sorting mechanism is arranged on the frame, and the air blowing sorting mechanism is communicated with the air outlet of the fan.

[0008] Preferably, the negative pressure adsorption feeding mechanism includes a front housing and a rear housing. The front housing and the rear housing are fixedly connected by fixing bolts. A negative pressure seed sucking structure is arranged inside the front housing. The negative pressure seed sucking structure is communicated with the fan. An inlet is formed on the rear housing. A hard material receiving pipe is communicated with the inlet. The hard material receiving pipe is communicated with the material distributing hopper through a feeding pipe. A first through hole is formed on the front housing. A first rotating shaft passes through the first through hole. The negative pressure seed sucking structure is fixedly connected with the first rotating shaft. The seed disturbing mechanism is installed on the first rotating shaft. A first motor is fixedly connected to the frame. An output shaft of the first motor is fixedly connected with the first rotating shaft. A seed disturbing mechanism is arranged inside the rear housing. Both the negative pressure seed sucking structure and the seed disturbing mechanism are in transmission connection with the first rotating shaft. A seed blocking plate is fixedly connected to the rear housing. The seed blocking plate is located below the seed disturbing mechanism.

[0009] Preferably, the negative pressure seed sucking structure includes an inner connecting plate. The inner connecting plate is fixedly connected inside the front housing. A negative pressure groove is fixedly connected to the inner connecting plate. A seed sucking disc is rotatably connected to the negative pressure groove. A shaped hole is formed on the seed sucking disc. The seed sucking disc is fixedly connected to the first rotating shaft. Air extraction ports are formed on the front housing and the inner connecting plate. The air extraction ports are communicated with the negative pressure groove. The shaped hole is communicated with the negative pressure groove. A first air guiding hose is communicated with the air extraction port. A plurality of the first air guiding hoses are communicated with the air inlet of the fan through a first main air pipe.

[0010] Preferably, the seed disturbing mechanism includes a cam, a connecting rod, a crank and a sleeve. The sleeve is fixedly connected to the first rotating shaft. The cam is fixedly connected to the sleeve. The connecting rod is rotatably connected to the cam through a first pin. One end of the crank is rotatably connected to the connecting rod through a second pin. The crank is rotatably connected to the rear housing through a third pin. A material pushing plate is fixedly connected to the crank.

[0011] Preferably, the material conveying mechanism includes a conveyor belt. A plurality of second rotating shafts are rotatably connected to the frame. A runner is fixedly connected to the second rotating shaft. The conveyor belt is wound around two runners. An outlet is formed on the rear housing. The outlet is located above the conveyor belt. The second rotating shaft is in transmission connection with a second motor. The second motor is fixedly connected to the frame.

[0012] Preferably, the air-blowing sorting mechanism includes an air-blowing sorting plate fixedly connected to the frame. The air-blowing sorting plate is provided with grooves and air flow channels, and the air flow channels are communicated with the grooves. A second air guide hose is communicated with the air flow channels. A plurality of the second air guide hoses are communicated with the air outlet of the fan through a second main air pipe. The grooves face the conveyor belt. A solenoid valve is installed on the second air guide hose. The air-blowing sorting mechanism is externally connected to a Raspberry Pi 4B as the main controller, which extracts the image values uploaded by the near-infrared hyperspectral detector and the machine vision detector, performs threshold matching, determines whether the seeds are qualified, controls the solenoid valve to open when the unqualified seeds pass through the sensor in front of the sorting device, and the sorting device blows air to complete the screening. When the qualified seeds pass through, the sensor does not send a signal, the solenoid valve does not open, and the air-blowing sorting plate does not blow air.

[0013] The present invention discloses the following technical effects: The present invention combines the methods of seed disturbing, air suction, spectral detection, and air blowing to construct a non-destructive cleaning solution for corn seeds. Through the close cooperation and coordinated work of each component, it effectively solves the problem of mechanical damage to corn seeds during the feeding and sorting processes of traditional seed sorters, improves the seed qualification rate, ensures the actual quality of the screened seeds, provides high-quality corn seeds for agricultural production, increases the hidden benefits of seeds, and has application prospects and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 It is a schematic structural diagram of a corn seed sorter for reducing mechanical damage according to the present invention;

[0016] Figure 2 It is a schematic structural diagram of the negative pressure adsorption feeding mechanism according to the present invention;

[0017] Figure 3 It is a schematic structural diagram of the seed suction disc according to the present invention;

[0018] Figure 4 It is a schematic structural diagram of the air-blowing sorting plate according to the present invention;

[0019] Figure 5 It is a schematic internal structure diagram of the negative pressure adsorption feeding mechanism according to the present invention;

[0020] Figure 6 It is a schematic structural diagram of the detection box according to the present invention;

[0021] Figure 7 Schematic diagram of the frame structure of the present invention;

[0022] Figure 8 Schematic diagram of the material distribution hopper structure of the present invention;

[0023] Figure 9 Top view cross-sectional view of the present invention;

[0024] Figure 10 Rear view of the material distribution hopper of the present invention;

[0025] Figure 11 Schematic diagram of the internal structure of the negative pressure tank of the present invention;

[0026] Among them, 1. Negative pressure adsorption feeding mechanism; 2. Air blowing sorting mechanism; 3. Detection box body; 4. Material conveying mechanism; 5. Fan; 6. Material distribution hopper; 7. Frame; 8. Front shell; 9. Rear shell; 10. Fixed bolt; 11. Seed suction disc; 12. Negative pressure tank; 13. First rotating shaft; 14. Seed disturbing mechanism; 15. Air blowing sorting plate; 16. Second air guiding hose; 17. Machine vision detector; 18. Near-infrared hyperspectral detector; 19. First motor; 20. Seed blocking plate; 21. Solenoid valve; 22. Cam; 23. Connecting rod; 24. Crank; 25. Sleeve; 26. Material dialing plate; 27. Inner connecting plate. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] Referring to Figures 1-11 , the present invention provides a corn seed sorter for reducing mechanical damage, including:

[0030] A frame 7, on which a material distribution hopper 6 is fixedly connected, and a plurality of negative pressure adsorption feeding mechanisms 1 are installed on the frame 7. The negative pressure adsorption feeding mechanism 1 is communicated with the material distribution hopper 6, the negative pressure adsorption feeding mechanism 1 is communicated with a material conveying mechanism 4, the negative pressure adsorption feeding mechanism 1 is communicated with a fan 5, and the negative pressure adsorption feeding mechanism 1 is communicated with the air inlet of the fan 5;

[0031] The detection component includes a detection box 3, which is fixedly connected to the frame 7. A near-infrared hyperspectral detector 18 and a machine vision detector 17 are installed in the detection box 3. The near-infrared hyperspectral detector 18 and the machine vision detector 17 are located above the material conveying mechanism 4. An air blowing sorting mechanism 2 is provided on the frame 7, and the air blowing sorting mechanism 2 is connected to the air outlet of the fan 5.

[0032] In this device, the dividing hopper 6 is used to hold corn seeds. After the corn seeds are poured into the dividing hopper 6, the corn seeds will flow into the negative pressure adsorption feeding mechanism 1. The negative pressure adsorption feeding mechanism 1 will place the corns one by one on the material conveying mechanism 4. When the material conveying mechanism 4 transports the corn seeds, the near-infrared hyperspectral detector 18 and the machine vision detector 17 above the material conveying mechanism 4 will detect the seeds. When unqualified seeds are detected, the air blowing sorting mechanism 2 will blow the unqualified seeds away from the material conveying mechanism 4, thereby retaining qualified corn seeds. The fan 5 provides negative pressure suction and blowing airflow for this device.

[0033] A further optimization scheme is provided, in which the negative pressure adsorption feeding mechanism 1 comprises a front shell 8 and a rear shell 9, which are fixedly connected by fixing bolts 10, a negative pressure seed suction structure is arranged in the front shell 8, and the negative pressure seed suction structure is connected with the fan 5, a feed port is arranged on the rear shell 9, and a material receiving hard pipe is connected to the feed port, and the material receiving hard pipe is connected with the distribution hopper 6 through a feeding pipe, a first through hole is arranged on the front shell 8, a first rotating shaft 13 is passed through the first through hole, the negative pressure seed suction structure is fixedly connected with the first rotating shaft 13, a seed disturbance mechanism 14 is installed on the first rotating shaft 13, a first motor 19 is fixedly connected to the frame 7, and an output shaft of the first motor 19 is fixedly connected with the first rotating shaft 13, a seed disturbance mechanism 14 is arranged in the rear shell 9, and both the negative pressure seed suction structure and the seed disturbance mechanism 14 are transmission-connected with the first rotating shaft 13, a seed blocking plate 20 is fixedly connected to the rear shell 9, and the seed blocking plate 20 is located below the seed disturbance mechanism 14.

[0034] After the air inlet of the fan 5 generates suction, negative pressure will be generated in the negative pressure seed suction structure; when the corn seeds in the dividing hopper 6 enter the rear shell body 9 through the feeding port, they will fall onto the seed blocking plate 20, and the corn seeds will accumulate on the seed blocking plate 20. The first motor will also drive the seed disturbance mechanism 14 to move. The movement of the seed disturbance mechanism 14 will push the accumulated seeds onto the negative pressure seed suction structure, and the negative pressure seed suction structure will absorb the seeds. As the negative pressure seed suction structure moves, when the negative pressure seed suction structure moves to a position without negative pressure, the seeds will fall and fall onto the material conveying mechanism 4.

[0035] For a further optimized solution, the negative pressure seed suction structure includes an inner connecting plate 27, which is fixedly connected inside the front housing. A seed suction disk 11 is rotatably connected to the inner connecting plate 27. The seed suction disk 11 is provided with shaped holes. The seed suction disk 11 is fixedly connected to a first rotating shaft 13. The front housing 8 and the inner connecting plate 27 are provided with air extraction ports, which are communicated with a negative pressure groove 12. The shaped holes are communicated with the negative pressure groove 12. A first air guide hose is communicated with the air extraction port, and a plurality of first air guide hoses are communicated with the air inlet of a fan 5 through a first main air pipe.

[0036] The fan 5 is communicated with the air extraction port through the first main air pipe and the first air guide hose, so as to generate negative pressure in the negative pressure groove 12. After negative pressure is generated in the negative pressure groove 12, air flow will enter the negative pressure groove 12 through the shaped holes, thus forming a negative pressure air flow. The seed disturbing mechanism 14 will move the seeds to the vicinity of the shaped holes of the seed suction disk 11, so as to facilitate the negative pressure seed suction structure to adsorb the seeds. The first rotating shaft 13 drives the seed suction disk 11 to rotate. As the seed suction disk 11 rotates, the seeds will be adsorbed onto the shaped holes. In this embodiment, the shape of the negative pressure groove 12 is as shown in Figure 11, which is not a complete ring. The first motor 19 drives the seed suction disk 11 to rotate. When the seed suction disk 11 rotates, the shaped holes will also gradually move. When the shaped holes move out of the range of the negative pressure groove 12, the suction force will be lost, and the seeds will fall onto the material conveying mechanism 4.

[0037] For a further optimized solution, the seed disturbing mechanism 14 includes a cam 22, a connecting rod 23, a crank 24 and a housing 25. The housing 25 is fixedly connected to the first rotating shaft 13. The cam 22 is fixedly connected to the housing 25. The connecting rod 23 is rotatably connected to the cam 22 through a first pin. One end of the crank 24 is rotatably connected to the connecting rod 23 through a second pin. The crank 24 is rotatably connected to the rear housing 9 through a third pin. A material pushing plate 26 is fixedly connected to the crank 24.

[0038] The housing 25 and the cam 22 driven by the first rotating shaft 13 rotate. The connecting rod 23 is eccentrically arranged on the cam 22. The cam 22 drives the connecting rod 23 to move. The connecting rod 23 drives the crank 24 to move. The crank 24 is rotatably connected to the rear housing 9. Therefore, the crank 24 will reciprocally rotate on the rear housing 9 under the drive of the connecting rod 23, causing the material pushing plate 26 to continuously push the materials.

[0039] For a further optimized solution, the material conveying mechanism 4 includes a conveyor belt. A plurality of second rotating shafts are rotatably connected to a frame 7. A runner is fixedly connected to the second rotating shaft. The conveyor belt is wound around two runners. The rear housing 9 is provided with a discharge port, which is located above the conveyor belt. The second rotating shaft is drivingly connected to a second motor, and the second motor is fixedly connected to the frame 7.

[0040] The second motor drives the second rotating shaft to drive the runner to rotate. The runner drives the conveyor belt to rotate. One second motor is provided for one conveyor belt. The installation of the material conveying mechanism 4 adopts the existing technology to realize the conveying of corn seeds.

[0041] For a further optimized solution, the air-blowing sorting mechanism 2 includes an air-blowing sorting plate 15. The air-blowing sorting plate 15 is fixedly connected to the frame 7. Grooves and air flow channels are formed on the air-blowing sorting plate 15. The air flow channels are communicated with the grooves. A second air guide hose 16 is communicated with the air flow channels. A plurality of second air guide hoses 16 are communicated with the air outlet of the fan 5 through a second main air pipe. The grooves face the conveyor belt.

[0042] The fan 5 blows out air flow. The air flow passes through the second main air pipe and the second air guide hoses 16, and is blown out from the grooves through the air flow channels.

[0043] The working principle of this device is as follows: After the corn seeds are poured into the material distributing hopper 6, the corn seeds enter the rear housing 9 through the feeding port and then fall onto the seed blocking plate. The corn seeds will accumulate on the seed blocking plate. The first motor (not shown in the figure) drives the first rotating shaft 13 to rotate. The first rotating shaft 13 drives the seed suction disc 11 to rotate. At the same time, the first rotating shaft 13 also drives the seed disturbing mechanism 14 to rotate. The movement of the seed disturbing mechanism 14 will push the accumulated seeds to the vicinity of the holes of the seed suction disc 11. After the air inlet of the fan 5 generates suction, a negative pressure will be generated in the negative pressure groove 12. Since the negative pressure groove 12 is buckled on the seed suction disc 11, the air flow will enter the negative pressure groove 12 through the holes, thereby forming a negative pressure air flow, which facilitates the adsorption of the seeds. When the seed suction disc 11 rotates, the holes will also gradually move. When the holes move out of the range of the negative pressure groove 12, the suction will be lost, and the seeds will fall onto the conveyor belt. The near-infrared hyperspectral detector 18 and the machine vision detector 17 above will detect the seeds. When unqualified seeds are detected, the air-blowing sorting mechanism 2 will blow the unqualified seeds away from the material conveying mechanism 4, thereby retaining the qualified corn seeds.

[0044] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0045] The above-described embodiments are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A corn seed sorter for reducing mechanical damage, characterized in that, include: A frame (7), a material distribution hopper (6) is fixedly connected to the frame (7), a plurality of negative pressure adsorption feeding mechanisms (1) are installed on the frame (7), the negative pressure adsorption feeding mechanism (1) is connected to the material distribution hopper (6), the negative pressure adsorption feeding mechanism (1) is connected to a material conveying mechanism (4), the negative pressure adsorption feeding mechanism (1) is connected to a fan (5), and the negative pressure adsorption feeding mechanism (1) is connected to an air inlet of the fan (5); A detection assembly, the detection assembly comprising a detection box (3), the detection box (3) being fixedly connected to the frame (7), a near-infrared hyperspectral detector (18) and a machine vision detector (17) being installed in the detection box (3), the near-infrared hyperspectral detector (18) and the machine vision detector (17) being located above the material conveying mechanism (4), an air-blowing sorting mechanism (2) being arranged on the frame (7), the air-blowing sorting mechanism (2) being in communication with an air outlet of the fan (5); The negative pressure adsorption feeding mechanism (1) comprises a front shell (8) and a rear shell (9), the front shell (8) and the rear shell (9) being fixedly connected by fixing bolts (10), a negative pressure seed suction structure being arranged in the front shell (8), the negative pressure seed suction structure being connected to the fan (5), an inlet being arranged on the rear shell (9), the inlet being connected to a material receiving hard pipe, the material receiving hard pipe being connected to the material distribution hopper (6) via a feeding pipe, a first through hole being arranged on the front shell (8), a first rotating shaft (13) being passed through the first through hole, the negative pressure seed suction structure The rear housing (9) is fixedly connected to the first rotating shaft (13); a seed disturbing mechanism (14) is arranged in the rear housing (9); the seed disturbing mechanism (14) is mounted on the first rotating shaft (13); a first motor (19) is fixedly connected to the frame (7); an output shaft of the first motor (19) is fixedly connected to the first rotating shaft (13); the negative pressure seed suction structure and the seed disturbing mechanism (14) are both drivingly connected to the first rotating shaft (13); a seed blocking plate (20) is fixedly connected to the rear housing (9); the seed blocking plate (20) is located below the seed disturbing mechanism (14); The negative pressure seed suction structure comprises an inner connecting plate (27), the inner connecting plate (27) is fixedly connected to the front shell (8), a negative pressure groove (12) is fixedly connected to the inner connecting plate (27), a seed suction disc (11) is rotatably connected to the negative pressure groove (12), a shaped hole is provided on the seed suction disc (11), the seed suction disc (11) is fixedly connected to the first rotating shaft (13), an air suction port is provided on the front shell (8) and the inner connecting plate, the air suction port is communicated with the negative pressure groove (12), the shaped hole is communicated with the negative pressure groove (12), a first air guide hose is communicated with the air suction port, and a plurality of the first air guide hoses are communicated with the air inlet of the fan (5) through a No. 1 main air pipe; The seed disturbing mechanism (14) includes a cam (22), a connecting rod (23), a crank (24) and a housing (25). The housing (25) is fixedly connected to the first rotating shaft (13). The cam (22) is fixedly connected to the housing (25). The connecting rod (23) is rotatably connected to the cam (22) through a first pin. One end of the crank (24) is rotatably connected to the connecting rod (23) through a second pin. The crank (24) is rotatably connected to the rear housing (9) through a third pin. A material pushing plate (26) is fixedly connected to the crank (24).

2. The corn seed sorter for reducing mechanical damage according to claim 1, wherein: The material conveying mechanism (4) includes a conveyor belt. A plurality of second rotating shafts are rotatably connected to the frame (7). A runner is fixedly connected to the second rotating shaft. The conveyor belt is wound around two runners. An outlet is formed in the rear housing (9). The outlet is located above the conveyor belt. The second rotating shaft is drivingly connected to a second motor. The second motor is fixedly connected to the frame (7).

3. The corn seed sorter for reducing mechanical damage according to claim 2, wherein: The air-blowing sorting mechanism (2) includes an air-blowing sorting plate (15). The air-blowing sorting plate (15) is fixedly connected to the frame (7). A groove and an air flow channel are formed in the air-blowing sorting plate (15). The air flow channel communicates with the groove. A second air guide hose (16) is communicated with the air flow channel. A plurality of the second air guide hoses (16) are communicated with the air outlet of the blower (5) through a second main air pipe. The groove faces the conveyor belt. An electromagnetic valve (21) is installed on the second air guide hose (16). The air-blowing sorting mechanism (2) is externally connected to a Raspberry Pi 4B as the main controller, extracts the image values uploaded by the near-infrared hyperspectral detector (18) and the machine vision detector (17), and performs threshold matching to determine whether the seeds are qualified. When the unqualified seeds pass through the sensor in front of the sorting device, the electromagnetic valve (21) is controlled to open, and the sorting device blows air to complete the screening. When the qualified seeds pass through, the sensor does not send a signal, the electromagnetic valve (21) does not open, and the air-blowing sorting plate (15) does not blow air.

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