Soybean seed selecting device

Abstract

The utility model belongs to the technical field of seed fine selection, and particularly relates to a soybean seed fine selection device which comprises a screening box. The top of the screening box is fixedly connected with a feeding hopper; a first discharging opening is formed in the bottom of the screening box; two first motors are mounted on the outer side wall of the screening box; the two first motors are oppositely arranged in a staggered mode. The output end of the first motor penetrates through the side wall of the screening box; the output end of the first motor is fixedly connected with a cam; two rotating shafts are arranged on the inner side wall of the screening box; the middle of the rotating shaft is rotationally connected with a sieve plate; pulleys are mounted at the bottom of the sieve plate; the pulley is arranged at the end part of the sieve plate; the pulley is in rolling connection with the middle of the cam; two springs are fixedly connected to the bottom of the sieve plate; soybean seeds are screened twice through the structure, rolling and screening of the seeds can be accelerated by continuously vibrating the two screening plates, and the screening efficiency of the soybean seeds is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of seed selection, in particular to a soybean seed selection device. Background Art

[0002] Soybean is a legume plant, which is often used to make various soy products, press soybean oil, and refine soy sauce.

[0003] Soybean seeds are the reproductive bodies of soybeans. Soybean seeds are usually oval or spherical, with a variety of colors. They have a certain hardness and toughness to protect the internal embryo and endosperm. Before the soybean seeds are terminated, the seeds need to be screened to remove unfilled or uneven seeds. Usually, the soybean seeds are placed on a sieve plate with a certain slope, and the inertia of the seeds rolling down is used for sliding seed selection. The mud and small seeds are screened into the bottom of the sieve through the gaps in the wire, thereby achieving the selection of seeds.

[0004] During the soybean screening process, soybean seeds come in different sizes. Traditional screening relies on the seeds sliding naturally in the sieve plate, which has low screening efficiency and can easily cause the seeds to get stuck in the sieve plate, resulting in blockage and reduced screening effect.

[0005] To this end, the utility model provides a soybean seed selection device. Utility Model Content

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the utility model to solve its technical problems is as follows: the soybean seed selection device described in the utility model comprises a screening box; a feed hopper is fixedly connected to the top of the screening box; a first discharge port is provided at the bottom of the screening box; two first motors are installed on the outer side wall of the screening box; the two first motors are arranged in an opposing and staggered manner; the output end of the first motor passes through the side wall of the screening box; the output end of the first motor is fixedly connected to a cam; two rotating shafts are provided on the inner side wall of the screening box; a screen plate is rotatably connected to the middle of the rotating shaft; a pulley is installed at the bottom of the screen plate; the pulley is arranged at the end position of the screen plate; the pulley is rollingly connected in the middle of the cam; two springs are fixed to the bottom of the screen plate; the A fixed plate is fixedly connected to the end of the spring; the fixed plate is fixedly connected to the inner wall of the screening box; the soybean seeds are screened twice by the above structure, and the rolling and screening of the seeds can be accelerated by continuously vibrating the two screen plates, thereby effectively improving the screening efficiency of the soybean seeds, reducing the jamming of the soybean seeds in the gap between the screen plates, and reducing the problem of blockage of the screen plates. It can effectively remove broken particles and pebbles in the seeds, improve the purity of the seeds, and can classify the seeds according to their size and weight, so that the selected seeds are uniform, thereby effectively improving the quality and yield of the seeds, and the coordinated use of the pulley and the cam can increase the stability and consistency of the screen plate vibration, and reduce the wear and damage of the screen plate caused by long-term use.

[0008] Preferably, two air pumps are fixedly connected to the outer wall of the screening box; the air pump is arranged at the top position of the first motor; an air inlet pipe is fixedly connected to the middle of the air pump; an air outlet pipe is fixedly connected to the middle of the air pump; the end of the outlet pipe passes through the side wall of the screening box; two mounting slots are provided on the inner wall of the screening box; an exhaust pipe is installed in the middle of the mounting slot; the end of the outlet pipe is fixedly connected to the middle of the exhaust pipe; an exhaust slot is provided in the middle of the exhaust pipe; two collecting assemblies are installed on the outer wall of the screening box; two collecting slots are provided on the side wall of the screening box; the bottom of the collecting slot is arranged as an inclined surface; the two collecting slots are arranged at the top position of the rotating shaft; through the above structure, the empty shells or broken seed coats in the seeds can be effectively separated from the seeds, and the remaining seeds can be made fuller and healthier. The heavier and high-quality seeds are not easily blown by the wind due to gravity, and thus can be retained, which can effectively provide a good seed foundation for subsequent sowing.

[0009] Preferably, the collecting assembly includes a collecting box; the outer side wall of the screening box is fixedly connected to a mounting assembly; the collecting box is installed in the middle of the mounting assembly; a first collecting chamber and a second collecting chamber are provided in the middle of the collecting box; the first collecting chamber is arranged on the top of the second collecting chamber; the inner side wall of the collecting box is hinged with a baffle; two elastic ropes are fixedly connected to the end of the baffle and the middle of the collecting box; the two elastic ropes are arranged in opposition; through the above structure, seeds and empty shells can be separated, which can effectively reduce the waste of land resources generated by empty shell seeds after seed planting, increase the germination rate of sown seeds, increase planting costs, and separate the empty shells for composting, which can be converted into organic fertilizer, thereby being used for soil improvement and realizing the recycling of resources.

[0010] Preferably, the side wall of the screening box is rotatably connected to a fixed rod; the fixed rod passes through the side wall of the screening box; a connecting block is fixedly connected to the middle of the fixed rod; two elastic telescopic rods are rotatably connected to the middle of the connecting block; the two elastic telescopic rods are arranged opposite each other; the ends of the elastic telescopic rod are fixedly connected to a connecting rod; the middle of the connecting rod is rotatably connected to a roller; multiple groups of bristles are fixedly connected to the middle of the roller; the bristles are equidistantly distributed; the above structure can effectively remove soybeans or broken particles that clog the pores of the screen plate, reduce the problem of blockage caused by the accumulation of these impurities and soybean seeds in the screen plate, and enable the screen plate to always remain unobstructed, so that the screen plate allows soybean seeds to pass through the sieve holes smoothly during the screening process, thereby improving the screening efficiency.

[0011] Preferably, a second motor is fixedly connected to the outer wall of the feed hopper; the output end of the second motor passes through the side wall of the feed hopper; the output end of the second motor is fixedly connected to a rotating rod; a paddle is fixedly connected to the middle of the rotating rod; the paddles are equidistantly distributed; two guide plates are fixedly connected to the inner wall of the feed hopper; the two guide plates are oppositely arranged; the guide plates are inclined; through the above structure, the number of seeds entering the screening box can be controlled, so that the seed flow rate during the screening process is stable, and the problem of reduced screening efficiency due to too many or too few seeds is reduced, and the seeds can be evenly distributed on the screen plate, reducing the accumulation of seeds on the screen plate or the formation of gaps, effectively improving the screening efficiency and uniformity of soybean seeds, and can effectively reduce the burden on the screen plate caused by excessive screening of soybean seeds, and reduce excessive wear and damage to the screen plate due to too many seeds.

[0012] Preferably, the mounting assembly includes two groups of mounting frames; each two mounting frames form a group; a mounting rod is inserted in the middle of the mounting frame; the collecting box is fixedly connected to the middle of the two mounting rods; through the above structure, the collecting box can be quickly put into use or the collected soybean seeds can be subsequently processed. When the soybean seeds are about to be full, the collecting box can be quickly replaced, which facilitates the installation and disassembly of the collecting box, effectively increasing the work efficiency of soybean seed screening and collection.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. The soybean seed selection device described in the present invention can screen the soybean seeds twice through the above-mentioned structure. By continuously vibrating the two sieve plates, the rolling and screening of the seeds can be accelerated, thereby effectively improving the screening efficiency of the soybean seeds, effectively removing broken particles and pebbles in the seeds, improving the purity of the seeds, and being able to grade the seeds according to their size and weight, so that the selected seeds are uniform, thereby effectively improving the quality and yield of the seeds.

[0015] 2. The soybean seed selection device described in the present invention can effectively separate the empty shells or broken seed coats from the seeds through the above-mentioned structure, so that the remaining seeds can be fuller and healthier. The heavier high-quality seeds are not easily blown by the wind due to gravity and are thus retained, which can effectively provide a good seed foundation for subsequent sowing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 It is a three-dimensional diagram in the present utility model;

[0018] Figure 2 It is a cross-sectional view of the screening box in the present utility model;

[0019] Figure 3 It is a structural diagram of the cam in the utility model;

[0020] Figure 4 It is a structural diagram of the collecting component in the utility model.

[0021] In the figure: 1. Screening box; 10. Feed hopper; 11. First motor; 12. Cam; 13. Rotating shaft; 14. Screen plate; 15. Pulley; 16. Spring; 17. Fixed plate; 18. First discharge port; 2. Air pump; 21. Inlet pipe; 22. Outlet pipe; 23. Mounting groove; 24. Exhaust pipe; 25. Exhaust groove; 26. Collecting groove; 3. Collecting assembly; 31. Collecting box; 32. First collecting chamber; 33. Second collecting chamber; 34. Baffle; 35. Elastic rope; 4. Fixed rod; 41. Connecting block; 42. Elastic telescopic rod; 43. Connecting rod; 44. Roller; 45. Bristles; 5. Guide plate; 51. Second motor; 52. Rotating rod; 53. Paddle plate; 6. Mounting assembly; 61. Mounting frame; 62. Mounting rod; 7. Visual window. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] like Figures 1 to 3 As shown, a soybean seed selection device according to an embodiment of the present invention comprises a screening box 1; a feed hopper 10 is fixedly connected to the top of the screening box 1; a first discharge port 18 is opened at the bottom of the screening box 1; two first motors 11 are installed on the outer wall of the screening box 1; the two first motors 11 are arranged in an opposite and staggered manner; the output end of the first motor 11 passes through the side wall of the screening box 1; a cam 12 is fixedly connected to the output end of the first motor 11; two rotating shafts 13 are provided on the inner wall of the screening box 1; a screen plate 14 is rotatably connected to the middle of the rotating shaft 13; a pulley 15 is installed at the bottom of the screen plate 14; the pulley 15 is arranged The sieve plate 14 is placed at the end position; the pulley 15 is connected in a rolling manner in the middle of the cam 12; two springs 16 are fixed to the bottom of the sieve plate 14; the end of the spring 16 is fixed to a fixed plate 17; the fixed plate 17 is fixed to the inner wall of the screening box 1; when working, the soybean seeds are placed in the feed hopper 10, and enter the screening box 1 through the feed hopper 10. At the same time, the two first motors 11 are turned on, so that the output end of the first motor 11 drives the cam 12 to rotate. When the raised part of the cam 12 gradually rotates to the middle of the pulley 15, one end of the sieve plate 14 is lifted up. When the sieve plate 14 is lifted up, When the cam 12 is raised, it rotates away from the middle of the pulley 15, and one end of the sieve plate 14 drops instantly. As the sieve plate 14 falls and the spring 16 contracts, the sieve plate 14 vibrates continuously. The pore density of the bottom sieve plate 14 is smaller than that of the top sieve plate 14. During the vibration of the two sieve plates 14, the soybean seeds are selected according to the pore size of the specified sieve plates 14. Finally, the impurities selected by the bottom sieve plate 14 are discharged through the first discharge port 18. The soybean seeds are screened twice through the above structure, and the two sieve plates 14 are continuously vibrated. It can accelerate the rolling and screening of seeds, effectively improve the screening efficiency of soybean seeds, reduce the jamming of soybean seeds in the gap of the screen plate 14, reduce the problem of blockage of the screen plate 14, effectively remove broken particles and pebbles in the seeds, improve the purity of the seeds, and can grade the seeds according to their size and weight, so that the selected seeds are uniform, thereby effectively improving the quality and yield of the seeds, and the coordinated use of the pulley 15 and the cam 12 can increase the stability and consistency of the vibration of the screen plate 14, and reduce the wear and damage of the screen plate 14 caused by long-term use.

[0024] like Figure 1 and Figure 2As shown, two air pumps 2 are fixedly connected to the outer wall of the screening box 1; the air pump 2 is arranged at the top position of the first motor 11; an air inlet pipe 21 is fixedly connected to the middle of the air pump 2; an air outlet pipe 22 is fixedly connected to the middle of the air pump 2; the end of the air outlet pipe 22 passes through the side wall of the screening box 1; two mounting grooves 23 are provided on the inner wall of the screening box 1; an exhaust pipe 24 is installed in the middle of the mounting groove 23; the end of the air outlet pipe 22 is fixedly connected to the middle of the exhaust pipe 24; an exhaust groove 25 is provided in the middle of the exhaust pipe 24; two collecting components 3 are installed on the outer wall of the screening box 1; two collecting grooves 26 are provided on the side wall of the screening box 1; the bottom of the collecting groove 26 is arranged with an inclined surface; the two collecting grooves 26 are provided at the top position of the rotating shaft 13; when working, when the soybean seeds pass through the sieve plate 14 for screening During the process, the air pump 2 is powered on and turned on, and the external air is sucked in through the air inlet pipe 21, and then enters the air outlet pipe 22 through the air pump 2, and the air flow inside the air outlet pipe 22 is discharged to the inside of the mounting groove 23, and the air flow is then discharged to the sieve plate 14 from the exhaust pipe 24. When the air flow blows towards the soybean seeds, the empty shells or impurities in the soybean seeds are blown to the position of the collecting tank 26, and enter the collecting component 3 through the collecting tank 26 for centralized collection. Through the above structure, the empty shells or broken seed coats in the seeds can be effectively separated from the seeds, and the remaining seeds can be made fuller and healthier. The heavier high-quality seeds are not easily blown by the wind due to gravity, and thus can be retained, which can effectively provide a good seed foundation for subsequent sowing.

[0025] like Figures 1 to 3 As shown, the collecting assembly 3 includes a collecting box 31; the outer wall of the screening box 1 is fixedly connected to the mounting assembly 6; the collecting box 31 is installed in the middle of the mounting assembly 6; a first collecting chamber 32 and a second collecting chamber 33 are provided in the middle of the collecting box 31; the first collecting chamber 32 is arranged on the top of the second collecting chamber 33; a baffle 34 is hinged on the inner wall of the collecting box 31; two elastic ropes 35 are fixedly connected to the end of the baffle 34 and the middle of the collecting box 31; the two elastic ropes 35 are arranged in opposition; during operation, when the soybean seeds pass through the sieve plate 14 and vibrate for screening, the qualified soybean seeds fall through the sieve plate 14. Unqualified soybean seeds are shaken and tilted by the sieve plate 14 and move toward the collecting trough 26. The seeds pass through the collecting trough 26 and enter the collecting box 31. The empty shells of the soybean seeds are blown into the first collecting chamber 32 by the air flow. Since the soybean seeds have a certain weight, when the soybean seeds enter the collecting box 31 and contact the baffle 34, one end of the baffle 34 rotates downward, allowing the soybean seeds to enter the second collecting chamber 33 for collection. When there are no soybean seeds on the baffle 34, the elasticity of the elastic rope 35 resets the baffle 34, thereby separating and collecting the soybean seeds and the empty shells or impurities. The above structure can separate the seeds and the empty shells, effectively reducing the waste of land resources caused by empty shell seeds after seed planting, increasing the germination rate of sown seeds, and increasing planting costs. The empty shells are separated and composted, and can be converted into organic fertilizers, which can be used for soil improvement and realize the recycling of resources.

[0026] like Figure 2 As shown, the side wall of the screening box 1 is rotatably connected to a fixed rod 4; the fixed rod 4 passes through the side wall of the screening box 1; a connecting block 41 is fixedly connected to the middle of the fixed rod 4; the middle of the connecting block 41 is rotatably connected to two elastic telescopic rods 42; the two elastic telescopic rods 42 are arranged opposite each other; the ends of the elastic telescopic rod 42 are fixedly connected to a connecting rod 43; the middle of the connecting rod 43 is rotatably connected to a roller 44; the middle of the roller 44 is fixedly connected to multiple groups of bristles 45; the bristles 45 are equidistantly distributed; when working, the driving device is connected to one end of the fixed rod 4, driving the fixed rod 4 to rotate on the side wall of the screening box 1, and when the fixed rod 4 rotates, the two elastic telescopic rods 42 rotate at the same time, through the bristles 45 and the two The sieve plate 14 contacts and passes through the pores in the middle of the sieve plate 14. When the bristles 45 contact the sieve plate 14 and are squeezed, the connecting rod 43 produces elastic contraction, and produces elastic stretching when not squeezed, so that the bristles 45 always keep in contact with the sieve plate 14. When the soybean seeds are screened, the sieve plate 14 is cleaned by the bristles 45. The above structure can effectively remove the soybeans or broken particles that clog the pores of the sieve plate 14, reduce the accumulation of these impurities and soybean seeds in the sieve plate 14 to cause blockage, and keep the sieve plate 14 unobstructed at all times, so that the sieve plate 14 allows the soybean seeds to pass through the sieve holes smoothly during the screening process, thereby improving the screening efficiency.

[0027] like Figure 1 and Figure 2 As shown, the outer wall of the feed hopper 10 is fixedly connected to a second motor 51; the output end of the second motor 51 passes through the side wall of the feed hopper 10; the output end of the second motor 51 is fixedly connected to a rotating rod 52; a dial plate 53 is fixedly connected to the middle of the rotating rod 52; the dial plates 53 are equidistantly distributed; two guide plates 5 are fixedly connected to the inner wall of the feed hopper 10; the two guide plates 5 are arranged oppositely; the guide plates 5 are inclined; when working, when soybean seeds are placed inside the feed hopper 10, first the second motor 51 is powered on and turned on, so that the output end of the second motor 51 drives the rotating rod 52 to rotate, and the multiple dial plates 53 rotate along with the rotating rod 52, and then the soybean seeds are guided to the middle through the two guide plates 5. The part enters between the two dial plates 53 from between the two guide plates 5, controls the rotation speed of the rotating rod 52, and allows the soybean seeds to enter the screening box 1 in a quantitative manner for selection. The above structure can control the number of seeds entering the screening box 1, stabilize the seed flow during the screening process, reduce the problem of reduced screening efficiency due to too many or too few seeds, and evenly distribute the seeds on the sieve plate 14, reducing the accumulation of seeds on the sieve plate 14 or the formation of gaps, effectively improving the screening efficiency and uniformity of the soybean seeds, and effectively reducing the burden on the sieve plate 14 caused by excessive screening of soybean seeds, and reducing excessive wear and damage to the sieve plate 14 due to too many seeds.

[0028] like Figure 1 and Figure 4As shown, the mounting assembly 6 includes two groups of mounting frames 61; each two mounting frames 61 form a group; a mounting rod 62 is inserted in the middle of the mounting frame 61; the collecting box 31 is fixedly connected to the middle of the two mounting rods 62; during operation, when installing the collecting box 31, first, one end of the two mounting rods 62 on the top of the collecting box 31 corresponds to one end of the mounting frame 61, and the mounting rod 62 is inserted and pushed from the end of the mounting frame 61, so that the mounting rod 62 slides into the middle of the mounting frame 61, and one side of the collecting box 31 fits tightly with the side wall of the screening box 1, thereby fixing the collecting box 31 to the side wall of the screening box 1. Through the above structure, the collecting box 31 can be quickly put into use or the collected soybean seeds can be subsequently processed. When the soybean seeds are about to be collected full, the collecting box 31 can be quickly replaced, which is convenient for the installation and disassembly of the collecting box 31, and effectively increases the efficiency of soybean seed screening and collection.

[0029] like Figure 1 As shown, a visual window 7 is provided on the side wall of the screening box 1; the visual window 7 is transparent; during operation, after the soybean seeds enter the screening box 1, the screening process of the soybean seeds inside the screening box 1 can be visually observed through the visual window 7. Through the above structure, the working conditions inside the screening box 1 can be visually viewed, problems arising from the screening process of the soybean seeds can be discovered in time, the quality of the seeds screened out by the soybean seeds can be observed in real time, and problems can be discovered and solved in time.

[0030] During operation, the soybean seeds are placed in the feed hopper 10 and enter the interior of the screening box 1 through the feed hopper 10. At the same time, the two first motors 11 are turned on, so that the output end of the first motor 11 drives the cam 12 to rotate. When the raised part of the cam 12 gradually rotates to the middle of the pulley 15, one end of the screen plate 14 is lifted. When the screen plate 14 is lifted, the spring 16 generates elastic stretching. After the cam 12 is raised and rotates away from the middle of the pulley 15, one end of the screen plate 14 drops instantly. As the screen plate 14 falls and as the spring 16 contracts, the screen plate 14 vibrates continuously. The pore density of the bottom screen plate 14 is smaller than that of the top screen plate 14. During the vibration of the two screen plates 14, the soybean seeds are moved according to the specified screen plate 1 4 pore size is selected, and finally the impurities selected by the bottom sieve plate 14 are discharged through the first discharge port 18. In the process of the soybean seeds passing through the sieve plate 14 for screening, the air pump 2 is powered on and turned on, and the external air is sucked in through the air inlet pipe 21, and then enters the air outlet pipe 22 through the air pump 2. The airflow inside the air outlet pipe 22 is discharged to the inside of the mounting groove 23, and the airflow is discharged to the sieve plate 14 from the exhaust pipe 24. When the airflow blows towards the soybean seeds, the empty shells or impurities in the soybean seeds are blown to the position of the collecting tank 26, and enter the collection component 3 through the collecting tank 26 for centralized collection. When the soybean seeds are vibrated and screened by the sieve plate 14, qualified soybean seeds fall through the sieve plate 14.The unqualified soybean seeds are shaken and tilted by the sieve plate 14 and move toward the collecting trough 26. The seeds pass through the collecting trough 26 and enter the collecting box 31. The empty shells of the soybean seeds are blown to the first collecting chamber 32 by the air flow. Due to the certain weight of the soybean seeds, when the soybean seeds enter the collecting box 31 and contact the baffle 34, one end of the baffle 34 rotates downward, allowing the soybean seeds to enter the second collecting chamber 33 for collection. When there are no soybean seeds on the baffle 34, the elasticity of the elastic rope 35 resets the baffle 34, thereby separating and collecting the soybean seeds and the empty shells or impurities. The baffle 34 is connected to one end of the fixed rod 4 through a driving device, driving the fixed rod 4 to rotate on the side wall of the screening box 1. When the fixed rod 4 rotates, the two elastic telescopic rods 42 rotate at the same time, contacting the two sieve plates 14 through the bristles 45 and passing through the pores in the middle of the sieve plates 14. When the bristles 45 contact the sieve plates 14 and are squeezed, the connecting rod 43 produces elastic contraction, and when not squeezed, it produces elastic stretching, so that the bristles 45 always keep in contact with the sieve plates 14. The sieve plate 14 is cleaned by the brush 45 when the soybean seeds are screened. When the soybean seeds are placed in the feed hopper 10, the second motor 51 is first powered on and turned on, so that the output end of the second motor 51 drives the rotating rod 52 to rotate, and the plurality of dial plates 53 rotate with the rotating rod 52, and then the soybean seeds are diverted to the middle through the two guide plates 5, and enter between the two dial plates 53 from between the two guide plates 5, and the rotation speed of the rotating rod 52 is controlled to make the soybean seeds quantitatively enter the screening box 1 for selection. When installing the collecting box 31, first, one end of the two mounting rods 62 at the top of the collecting box 31 corresponds to one end of the mounting frame 61, and the mounting rod 62 is inserted and pushed from the end of the mounting frame 61 so that the mounting rod 62 slides and enters the middle of the mounting frame 61. One side of the collecting box 31 is tightly fitted with the side wall of the screening box 1, so that the collecting box 31 is fixed to the side wall of the screening box 1. After the soybean seeds enter the screening box 1, the screening process of the soybean seeds in the screening box 1 can be visually observed through the visual window 7.

[0031] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A soybean seed selection device, comprising a screening box (1); characterized in that: The top of the screening box (1) is fixedly connected to a feed hopper (10); the bottom of the screening box (1) is provided with a first discharge port (18); two first motors (11) are installed on the outer wall of the screening box (1); the two first motors (11) are arranged in an opposite and staggered manner; the output end of the first motor (11) passes through the side wall of the screening box (1); the output end of the first motor (11) is fixedly connected to a cam (12); the inner wall of the screening box (1) is provided with two rotating shafts (13); the middle part of the rotating shaft (13) is rotatably connected to a screen plate (14); a pulley (15) is installed on the bottom of the screen plate (14); the pulley (15) is arranged at the end position of the screen plate (14); the pulley (15) is rollingly connected to the middle part of the cam (12); two springs (16) are fixedly connected to the bottom of the screen plate (14); the end of the spring (16) is fixedly connected to a fixed plate (17); the fixed plate (17) is fixedly connected to the inner wall of the screening box (1).

2. A soybean seed selection device according to claim 1, characterized in that: Two air pumps (2) are fixedly connected to the outer wall of the screening box (1); the air pump (2) is arranged at the top position of the first motor (11); an air inlet pipe (21) is fixedly connected to the middle of the air pump (2); an air outlet pipe (22) is fixedly connected to the middle of the air pump (2); the end of the air outlet pipe (22) passes through the side wall of the screening box (1); two mounting grooves (23) are provided on the inner wall of the screening box (1); an exhaust pipe (24) is installed in the middle of the mounting groove (23); the end of the air outlet pipe (22) is fixedly connected to the middle of the exhaust pipe (24); an exhaust groove (25) is provided in the middle of the exhaust pipe (24); two collecting assemblies (3) are installed on the outer wall of the screening box (1); two collecting grooves (26) are provided on the side wall of the screening box (1); the bottom of the collecting groove (26) is arranged as an inclined surface; the two collecting grooves (26) are provided at the top position of the rotating shaft (13).

3. The soybean seed selection device according to claim 2, characterized in that: The collecting assembly (3) comprises a collecting box (31); the outer side wall of the screening box (1) is fixedly connected to a mounting assembly (6); the collecting box (31) is installed in the middle of the mounting assembly (6); a first collecting chamber (32) and a second collecting chamber (33) are provided in the middle of the collecting box (31); the first collecting chamber (32) is arranged on the top of the second collecting chamber (33); a baffle (34) is hingedly connected to the inner side wall of the collecting box (31); two elastic ropes (35) are fixedly connected to the end of the baffle (34) and the middle of the collecting box (31); the two elastic ropes (35) are arranged in opposition to each other.

4. The soybean seed selection device according to claim 1, characterized in that: The side wall of the screening box (1) is rotatably connected to a fixing rod (4); the fixing rod (4) passes through the side wall of the screening box (1); a connecting block (41) is fixedly connected to the middle of the fixing rod (4); two elastic telescopic rods (42) are rotatably connected to the middle of the connecting block (41); the two elastic telescopic rods (42) are arranged opposite to each other; the ends of the elastic telescopic rods (42) are fixedly connected to a connecting rod (43); the middle of the connecting rod (43) is rotatably connected to a roller (44); a plurality of groups of bristles (45) are fixedly connected to the middle of the roller (44); the bristles (45) are evenly distributed.

5. The soybean seed selection device according to claim 1, characterized in that: The outer side wall of the feed hopper (10) is fixedly connected to a second motor (51); the output end of the second motor (51) passes through the side wall of the feed hopper (10); the output end of the second motor (51) is fixedly connected to a rotating rod (52); a shift plate (53) is fixedly connected to the middle of the rotating rod (52); the shift plates (53) are distributed at equal intervals; the inner side wall of the feed hopper (10) is fixedly connected to two guide plates (5); the two guide plates (5) are arranged in opposition; and the guide plates (5) are arranged in an inclined manner.

6. The soybean seed selection device according to claim 3, characterized in that: The mounting assembly (6) comprises two groups of mounting frames (61); each two mounting frames (61) form a group; a mounting rod (62) is inserted in the middle of the mounting frames (61); and the collection box (31) is fixed to the middle of the two mounting rods (62).

7. The soybean seed selection device according to claim 1, characterized in that: A visual window (7) is provided on the side wall of the screening box (1); the visual window (7) is transparent.

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