Seed selection device for wheat breeding

Abstract

The invention belongs to the technical field of wheat seed selection, in particular to a seed selection device for wheat breeding, and provides the following scheme that the seed selection device comprises a device body, a feeding port, a discharging plate and screening plates, the two screening plates are each provided with a plurality of sets of preformed holes, and moving blocks are symmetrically installed on the outer walls of the two screening plates; a plurality of first sliding grooves are symmetrically formed in the inner wall of the device body, movable shafts are movably installed in the first sliding grooves, and protruding blocks are arranged on the inner walls of the movable blocks. According to the wheat seed screening device, by arranging the screening plates, the moving blocks and the movable shafts, after the two screening plates move, wheat seeds with large sizes are left at the upper end of the screening plate at the upper end, wheat seeds with proper sizes fall at the upper end of the screening plate at the lower end, and wheat seeds with small sizes fall at the upper end of a discharging plate and slide into a first collecting bin; the screening device is prevented from being replaced in the wheat seed screening operation process, the workload of workers is reduced, and the wheat seed screening efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of wheat seed selection, in particular to a seed selection device for wheat breeding. Background Art

[0002] The quality of wheat seeds directly affects the yield of wheat, so wheat breeding is particularly important. Wheat breeding is a scientific process of selecting and improving wheat varieties to improve yield, disease resistance, stress resistance and quality. Seed selection in wheat breeding is a key step in breeding new varieties. It is necessary to screen out well-developed wheat seeds, that is, to eliminate wheat that does not meet the volume standards, in order to select individuals or groups with excellent traits for subsequent breeding work, and a seed selection device is needed for screening.

[0003] In the prior art, when performing wheat seed selection operations, the workers usually first screen out the smaller wheat seeds through a seed selection device, and then replace the workers with another set of seed selection devices to screen out the wheat seeds again. During the secondary screening operation, the larger wheat seeds are screened out, thereby increasing the workload of the workers and reducing the work efficiency of the wheat seed selection operation.

[0004] For this reason, a kind of wheat breeding is needed to select seeds. Summary of the invention

[0005] The present invention provides a seed selection device for wheat breeding, which solves the problem in the prior art that when performing wheat seed selection operations, most workers first use a seed selection device to screen out wheat seeds with a smaller volume, and then replace another set of seed selection devices to screen out the wheat seeds again. During the secondary screening operation, larger wheat seeds are screened out, thereby increasing the workload of the workers and reducing the work efficiency of the wheat selection operation.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A seed selection device for wheat breeding, comprising a device body, a feed inlet, a discharge plate and a screening plate, wherein the upper end of the device body is provided with a feed inlet, two groups of screening plates are movably installed inside the device body, and a discharge plate is obliquely installed inside the device body;

[0008] The two groups of sieve plates are provided with multiple groups of reserved holes, and the diameter of the multiple groups of reserved holes at the end of one group of sieve plates is larger than the diameter of the multiple groups of reserved holes at the end of the other group of sieve plates. The outer walls of the two groups of sieve plates are symmetrically installed with moving blocks. The inner wall of the device body is symmetrically provided with multiple groups of first slide grooves, and the multiple groups of first slide grooves are staggered. Movable shafts are movably installed inside the multiple groups of first slide grooves, and the outer walls of the multiple groups of movable shafts are provided with reciprocating thread grooves. The inner walls of the multiple groups of moving blocks are provided with protrusions, and the multiple groups of protrusions are movably connected with the reciprocating thread grooves on the outer walls of the multiple groups of movable shafts, and the multiple groups of movable shafts are respectively provided with synchronous belts to connect them;

[0009] A bellows is installed inside the device body, and a motor is provided inside the bellows, an output shaft is installed at the output end inside the bellows, and a fan is installed on the outer wall of the output shaft, two groups of first transmission shafts are movably installed inside the device body, and the two groups of first transmission shafts are connected by a synchronous belt, the output shaft extends to one end of the outer wall of the bellows and is connected to a group of first transmission shafts by a synchronous belt, and the two groups of first transmission shafts are respectively connected to the two groups of movable shafts by synchronous belts.

[0010] Preferably, a first material receiving bin and a second material receiving bin are respectively provided on both sides of the device body, and one end of a discharge plate is connected to the first material receiving bin, and one end of the first material receiving bin and the second material receiving bin are respectively provided with a first discharge port and a second discharge port.

[0011] Preferably, multiple groups of drive shafts are movably installed inside the device body, and the multiple groups of drive shafts are respectively connected by synchronous belts, a drive motor is installed inside the device body, and the output end of the drive motor is connected to a group of drive shafts, a baffle is movably installed inside the device body, and the inner wall of the baffle is respectively threadedly connected to the outer walls of the multiple groups of drive shafts, a mounting plate is installed at one end of the baffle, and a fixing column is installed at one end of the mounting plate.

[0012] Preferably, a movable cylinder is movably installed inside the device body, and the inner wall of the movable cylinder is threadedly connected to the outer wall of the fixed column, a movable bevel gear is installed on the outer wall of the movable cylinder, a second transmission shaft is movably installed inside the device body, transmission bevel gears are installed at both ends of the second transmission shaft, and a group of transmission bevel gears are meshed and connected with the movable bevel gear.

[0013] Preferably, a first connecting shaft is movably installed inside the device body, a connecting bevel gear is installed at one end of the first connecting shaft, and the connecting bevel gear is meshingly connected with another set of transmission bevel gears, a second connecting shaft is movably installed inside the device body, and a synchronous belt is provided between the second connecting shaft and the first connecting shaft.

[0014] Preferably, multiple groups of first limit shafts are movably installed inside the device body, and grooves are provided at one end of the multiple groups of first limit shafts, limit blocks are symmetrically installed on the outer walls of one end of the two groups of screen plates, and the multiple groups of limit blocks are movably connected to the inner walls of the multiple groups of grooves respectively, and two groups of support plates are movably installed inside the device body, and the two groups of support plates are movably connected to the two groups of screen plates respectively.

[0015] Preferably, multiple groups of second limit shafts are movably installed inside the device body, and the multiple groups of second limit shafts are respectively connected by synchronous belts, the first connecting shaft and one group of second limit shafts are connected by a synchronous belt, and the second connecting shaft and another group of second limit shafts are connected by a synchronous belt, the outer walls of the multiple groups of second limit shafts are respectively threadedly connected to the inner walls of the two groups of support plates, the inner wall of the device body is symmetrically provided with multiple groups of second slide grooves, and the multiple groups of second slide grooves are respectively connected to the multiple groups of first slide grooves.

[0016] Preferably, a movable plate is movably installed inside the device body, and the movable plate is movably connected to the second discharge port, multiple groups of third limit shafts are movably installed inside the device body, and the outer walls of the multiple groups of third limit shafts are respectively threadedly connected to the inner wall of the movable plate, the multiple groups of third limit shafts are respectively connected by synchronous belts, and one group of the third limit shafts is connected to the first connecting shaft by a synchronous belt.

[0017] Preferably, a plurality of sets of air outlet plates are installed at the bottom end of the second material receiving bin, an air outlet pipe is installed at the air outlet of the bellows, and branch pipes are respectively provided between the air outlet pipe and the plurality of sets of air outlet plates, and filters are provided at the upper air outlets of the plurality of sets of air outlet plates.

[0018] Preferably, a dust box is installed on the outer wall of the device body, an air inlet pipe is installed on the air inlet of the bellows, and the other end of the air inlet pipe is connected to the dust box, a dust suction plate is installed on the upper end of the second material collecting bin, and a dust suction pipe is provided between the dust suction plate and the dust box.

[0019] The present invention proposes a seed selection device for wheat breeding. Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention solves the problem of wheat seed selection by providing a screening plate, a moving block and a movable shaft. When the multiple sets of movable shafts rotate, the reciprocating thread grooves on the outer walls of the multiple sets of movable shafts are respectively movably connected with the protrusions on the inner walls of the multiple sets of moving blocks. Therefore, the multiple sets of moving blocks reciprocate on the inner walls of the two sets of first slide grooves and the two sets of second slide grooves respectively, thereby driving the two sets of screening plates to move back and forth to screen the wheat seeds. After the two sets of screening plates stop moving, the larger wheat seeds are retained on the upper end of the upper set of screening plates, the wheat seeds of appropriate volume fall to the upper end of the lower set of screening plates, the smaller wheat seeds fall to the upper end of the discharge plate, and slide into the first collecting bin, and then are discharged to the outer end of the device body through the first discharge port, thereby avoiding the replacement of the screening device during the wheat seed screening operation, reducing the workload of the staff, and improving the wheat seed screening efficiency.

[0021] 2. The present invention is provided with a bellows, an air outlet plate, a dust collecting box and a dust suction plate. The fan inside the bellows rotates, and airflow is generated inside the bellows. The airflow enters into multiple groups of air outlet plates through the air outlet pipe and multiple groups of branch pipes respectively. The airflow blows upward from the bottom of the wheat seeds inside the second collecting bin, so that light impurities (such as empty shells or straw) in the wheat seeds float upward. When airflow is generated inside the bellows, the bellows transmits negative pressure to the dust collecting box through the air inlet pipe, so that the dust suction pipe generates suction, and the suction is transmitted to the dust suction plate. The dust suction plate absorbs light impurities (such as empty shells or straw), thereby further improving the quality of the screened wheat seeds.

[0022] 3. The present invention is provided with a baffle, a fixed column and an air outlet plate. The baffle is displaced and moved to the inside of the second material receiving bin to divide the second material receiving bin into two spaces. The selected wheat seeds are located in the space at the lower end of the baffle. At the same time, the baffle drives the fixed column to be displaced, thereby driving the movable cylinder to rotate, and then driving multiple groups of second limit axes and multiple groups of third limit axes, thereby driving two groups of support plates and the movable plate to be displaced, and then driving two groups of screening plates to rotate, so that the wheat seeds on the upper ends of the two groups of screening plates fall into the first material receiving bin and the second material receiving bin respectively, thereby avoiding the wheat seeds from being mixed with the selected wheat seeds. At the same time, the movable plate is displaced, and the selected wheat seeds are discharged through the second discharge port, further improving the efficiency of wheat seed selection.

[0023] 4. The present invention is provided with a screening plate, a bellows, an air outlet plate and a dust suction plate. When the motor inside the fan is started, it drives multiple groups of movable shafts to rotate, thereby driving multiple groups of screening plates to move, and screens the wheat seeds on the upper ends of the two groups of screening plates. At the same time, airflow is generated inside the bellows, and the air outlet plate cooperates with the dust suction plate to clean up light impurities (such as empty shells or straw) mixed in the wheat seeds, thereby further improving the quality of the wheat seeds. The screening operation and the cleaning operation are carried out simultaneously, thereby improving the work efficiency of the wheat seed selection operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the main body of a seed selection device for wheat breeding according to the present invention;

[0025] Figure 2 It is a side sectional view of the main body of a seed selection device for wheat breeding of the present invention;

[0026] Figure 3 This is a schematic diagram of a first chute and a second chute of a seed selection device for wheat breeding according to the present invention;

[0027] Figure 4 This is a schematic diagram of a screening plate of a seed selection device for wheat breeding according to the present invention;

[0028] Figure 5 This is a schematic diagram of the internal structure of a device body of a seed selection device for wheat breeding according to the present invention;

[0029] Figure 6 This is a schematic diagram of a bellows of a seed selection device for wheat breeding according to the present invention;

[0030] Figure 7 This is a schematic diagram of a support plate and a movable plate of a seed selection device for wheat breeding according to the present invention;

[0031] Figure 8 This is a schematic diagram of a baffle of a seed selection device for wheat breeding according to the present invention;

[0032] Fig. 9 The present invention is a schematic diagram of a movable cylinder of a seed selection device for wheat breeding.

[0033] In the figure: 1. device body; 2. material inlet; 3. material discharge plate; 4. first material receiving bin; 5. first material discharge port; 6. second material receiving bin; 7. second material discharge port; 8. screening plate; 9. stop block; 10. moving block; 11. first chute; 12. second chute; 13. bellows; 14. output shaft; 15. first transmission shaft; 16. movable shaft; 17. air outlet pipe; 18. air outlet plate; 19. air inlet pipe; 20. dust collecting box; 21 , dust suction pipe; 22, dust suction plate; 23, first limit shaft; 24, drive motor; 25, drive shaft; 26, baffle; 27, mounting plate; 28, fixing column; 29, movable cylinder; 30, movable bevel gear; 31, second transmission shaft; 32, transmission bevel gear; 33, first linkage shaft; 34, linkage bevel gear; 35, second linkage shaft; 36, second limit shaft; 37, support plate; 38, third limit shaft; 39, movable plate. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0035] See also Figure 1-9 The present invention provides a technical solution: a seed selection device for wheat breeding, comprising a device body 1, a feed inlet 2, a discharge plate 3 and a screening plate 8, wherein the upper end of the device body 1 is provided with a feed inlet 2, two groups of screening plates 8 are movably installed inside the device body 1, and a discharge plate 3 is obliquely installed inside the device body 1;

[0036] The two groups of sieve plates 8 are provided with multiple groups of reserved holes, and the diameter of the multiple groups of reserved holes at the end of one group of sieve plates 8 is larger than the diameter of the multiple groups of reserved holes at the end of the other group of sieve plates 8. The outer walls of the two groups of sieve plates 8 are symmetrically installed with moving blocks 10. The inner wall of the device body 1 is symmetrically provided with multiple groups of first slide grooves 11, and the multiple groups of first slide grooves 11 are staggered. The multiple groups of first slide grooves 11 are movably installed with movable shafts 16 inside, and the outer walls of the multiple groups of movable shafts 16 are provided with reciprocating thread grooves. The inner walls of the multiple groups of moving blocks 10 are provided with protrusions, and the multiple groups of protrusions are respectively reciprocating with the outer walls of the multiple groups of movable shafts 16. The grooves are movably connected, and multiple groups of movable shafts 16 are respectively connected by synchronous belts. When the multiple groups of movable shafts 16 rotate, they drive the multiple groups of moving blocks 10 to reciprocate on the inner walls of the two groups of first slide grooves 11 and the two groups of second slide grooves 12, respectively, thereby driving the two groups of screening plates 8 to move back and forth to screen the wheat seeds. After the two groups of screening plates 8 stop moving, the larger wheat seeds are left on the upper end of the upper group of screening plates 8, the wheat seeds of appropriate volume fall to the upper end of the lower group of screening plates 8, and the smaller wheat seeds fall to the upper end of the discharge plate 3;

[0037] A bellows 13 is installed inside the device body 1, and a motor is provided inside the bellows 13. An output shaft 14 is installed at the output end inside the bellows 13, and a fan is installed on the outer wall of the output shaft 14. The motor inside the bellows 13 is started to drive the output shaft 14 to rotate. Two groups of first transmission shafts 15 are movably installed inside the device body 1, and a synchronous belt is provided between the two groups of first transmission shafts 15 to connect. The output shaft 14 extends to one end of the outer wall of the bellows 13 and is connected with a group of first transmission shafts 15 with a synchronous belt, and the two groups of first transmission shafts 15 are respectively connected with two groups of movable shafts 16 with synchronous belts. The rotation of the output shaft 14 drives a group of first transmission shafts 15 to rotate, and the two groups of first transmission shafts 15 are connected by synchronous belts. The two groups of first transmission shafts 15 rotate synchronously, and the two groups of first transmission shafts 15 are respectively connected with two groups of movable shafts 16 by synchronous belts, so the two groups of movable shafts 16 rotate, and multiple groups of movable shafts 16 are respectively connected by synchronous belts, so multiple groups of movable shafts 16 rotate synchronously.

[0038] Furthermore, a first material receiving bin 4 and a second material receiving bin 6 are respectively provided on both sides of the device body 1, and one end of the discharge plate 3 is connected to the first material receiving bin 4, and a first discharge port 5 and a second discharge port 7 are respectively provided at one end of the first material receiving bin 4 and the second material receiving bin 6. The wheat seeds on the upper ends of the two groups of screening plates 8 fall into the first material receiving bin 4 and the second material receiving bin 6 respectively, and the wheat seeds inside the first material receiving bin 4 and the second material receiving bin 6 are respectively discharged through the first discharge port 5 and the second discharge port 7.

[0039] Furthermore, a plurality of drive shafts 25 are movably installed inside the device body 1, and the plurality of drive shafts 25 are respectively connected by synchronous belts, a drive motor 24 is installed inside the device body 1, and the output end of the drive motor 24 is connected to a group of drive shafts 25, a baffle 26 is movably installed inside the device body 1, and the inner wall of the baffle 26 is respectively threadedly connected to the outer wall of the plurality of drive shafts 25, a mounting plate 27 is installed at one end of the baffle 26, and a fixing column 28 is installed at one end of the mounting plate 27, the drive motor 24 is started, the drive motor 24 drives a group of drive shafts 25 to rotate, and the plurality of drive shafts 25 are respectively connected by synchronous belts, the plurality of drive shafts 25 rotate synchronously, and the outer walls of the plurality of drive shafts 25 are all threadedly connected to the inner wall of the baffle 26, so the baffle 26 is displaced, the baffle 26 drives the mounting plate 27 to displace, thereby driving the fixing column 28 to displace.

[0040] Furthermore, a movable cylinder 29 is movably installed inside the device main body 1, and the inner wall of the movable cylinder 29 is threadedly connected to the outer wall of the fixed column 28, and a movable bevel gear 30 is installed on the outer wall of the movable cylinder 29. A second transmission shaft 31 is movably installed inside the device main body 1, and transmission bevel gears 32 are installed at both ends of the second transmission shaft 31, and a group of transmission bevel gears 32 are meshed and connected with the movable bevel gear 30. The fixed column 28 is displaced, and the fixed column 28 moves into the movable cylinder 29. The outer wall of the fixed column 28 is threadedly connected to the inner wall of the movable cylinder 29, driving the movable cylinder 29 to rotate, thereby driving the movable bevel gear 30 to rotate, and the movable bevel gear 30 is meshed and connected with a group of transmission bevel gears 32. A group of transmission bevel gears 32 rotates, thereby driving the second transmission shaft 31 to rotate, and then driving another group of transmission bevel gears 32 to rotate.

[0041] Furthermore, a first linkage shaft 33 is movably installed inside the device body 1, a linkage bevel gear 34 is installed at one end of the first linkage shaft 33, and the linkage bevel gear 34 is meshed and connected with another set of transmission bevel gears 32. A second linkage shaft 35 is movably installed inside the device body 1, and a synchronous belt is provided between the second linkage shaft 35 and the first linkage shaft 33. When the other set of transmission bevel gears 32 rotates, the other set of transmission bevel gears 32 is meshed and connected with the linkage bevel gear 34, and the linkage bevel gear 34 rotates, thereby driving the first linkage shaft 33 to rotate, and then driving the second linkage shaft 35 to rotate.

[0042] Furthermore, multiple groups of first limit shafts 23 are movably installed inside the device body 1, and grooves are opened at one end of the multiple groups of first limit shafts 23, and limit blocks 9 are symmetrically installed on the outer walls of one end of the two groups of screen plates 8, and the multiple groups of limit blocks 9 are respectively movably connected to the inner walls of the multiple groups of grooves, and two groups of support plates 37 are movably installed inside the device body 1, and the two groups of support plates 37 are respectively movably connected to the two groups of screen plates 8, and the two groups of support plates 37 respectively provide auxiliary support to one end of the two groups of screen plates 8.

[0043] Furthermore, multiple groups of second limit shafts 36 are movably installed inside the device body 1, and the multiple groups of second limit shafts 36 are respectively connected by synchronous belts, the first connecting shaft 33 and one group of second limit shafts 36 are connected by a synchronous belt, and the second connecting shaft 35 and another group of second limit shafts 36 are connected by a synchronous belt, the outer walls of the multiple groups of second limit shafts 36 are respectively threadedly connected to the inner walls of the two groups of support plates 37, and the inner wall of the device body 1 has multiple groups of second slide grooves 12 symmetrically opened, and the multiple groups of second slide grooves 12 are respectively connected to the multiple groups of first slide grooves 11, the first connecting shaft 33 and the second connecting shaft 35 rotate, driving the multiple groups of second limit shafts 36 to rotate, thereby driving the two groups of support plates 37 to move, and then driving one end of the two groups of screening plates 8 to move.

[0044] Furthermore, a movable plate 39 is movably installed inside the device body 1, and the movable plate 39 is movably connected to the second discharge port 7. Multiple groups of third limit shafts 38 are movably installed inside the device body 1, and the outer walls of the multiple groups of third limit shafts 38 are respectively threadedly connected to the inner wall of the movable plate 39. The multiple groups of third limit shafts 38 are respectively connected by synchronous belts, and one group of the third limit shafts 38 is connected to the first connecting shaft 33 by a synchronous belt. The first connecting shaft 33 rotates, driving the multiple groups of third limit shafts 38 to rotate, thereby driving the movable plate 39 to move.

[0045] Furthermore, a plurality of groups of air outlet plates 18 are installed at the bottom end of the second material receiving bin 6, an air outlet pipe 17 is installed at the air outlet of the bellows 13, and branch pipes are respectively provided between the air outlet pipe 17 and the plurality of groups of air outlet plates 18, and filters are provided at the upper air outlets of the plurality of groups of air outlet plates 18. The fan inside the bellows 13 rotates, and airflow is generated inside the bellows 13. The airflow enters the plurality of groups of air outlet plates 18 through the air outlet pipe 17 and the plurality of groups of branch pipes, and the airflow is blown upward from the bottom of the wheat seeds inside the second material receiving bin 6, so that light impurities (such as empty shells or straw) in the wheat seeds float upward.

[0046] Furthermore, a dust box 20 is installed on the outer wall of the device body 1, an air inlet pipe 19 is installed at the air inlet of the bellows 13, and the other end of the air inlet pipe 19 is connected to the dust box 20, and a dust suction plate 22 is installed on the upper end of the second collecting bin 6, and a dust suction pipe 21 is provided between the dust suction plate 22 and the dust box 20. When airflow is generated inside the bellows 13, the bellows 13 transmits the negative pressure to the inside of the dust box 20 through the air inlet pipe 19, so that the dust suction pipe 21 generates suction and transmits the suction to the dust suction plate 22, and the dust suction plate 22 absorbs light impurities (such as empty shells or straw).

[0047] Working principle: When the staff uses the device to select wheat seeds, the staff pours the wheat seeds into the device body 1 from the feed port 2, and the wheat seeds fall to the upper end of a group of sieve plates 8. The motor inside the bellows 13 starts, driving the output shaft 14 to rotate, and the output shaft 14 is connected to a group of first transmission shafts 15 through a synchronous belt, a group of first transmission shafts 15 rotate, and the two groups of first transmission shafts 15 are connected through a synchronous belt, the two groups of first transmission shafts 15 rotate synchronously, and the two groups of first transmission shafts 15 are respectively connected to two groups of movable shafts 16 through synchronous belts, so the two groups of movable shafts 16 rotate, and multiple groups of movable shafts 16 are respectively connected through synchronous belts, so multiple groups of movable shafts 16 rotate synchronously;

[0048] When the multiple groups of movable shafts 16 rotate, because the reciprocating thread grooves on the outer walls of the multiple groups of movable shafts 16 are respectively movably connected with the protrusions on the inner walls of the multiple groups of moving blocks 10, the multiple groups of moving blocks 10 respectively reciprocate on the inner walls of the two groups of first slide grooves 11 and the two groups of second slide grooves 12, thereby driving the two groups of screening plates 8 to reciprocate and move to screen the wheat seeds. The motor inside the bellows 13 is turned off, the two groups of screening plates 8 stop moving, and the two groups of limit blocks 9 at one end of the two groups of screening plates 8 respectively enter the grooves at one end of the multiple groups of first limit shafts 23. At the same time, the multiple groups of moving blocks 10 respectively move to the intersection ends of the multiple groups of first slide grooves 11 and the multiple groups of second slide grooves 12;

[0049] When the two groups of sieve plates 8 stop moving, the wheat seeds with larger volume are retained on the upper end of the group of sieve plates 8 at the upper end, the wheat seeds with appropriate volume fall to the upper end of the group of sieve plates 8 at the lower end, and the wheat seeds with smaller volume fall to the upper end of the discharge plate 3, and slide into the first receiving bin 4, and then are discharged to the outer end of the device body 1 through the first discharge port 5;

[0050] When the motor inside the bellows 13 stops, the drive motor 24 starts, and the drive motor 24 drives a set of drive shafts 25 to rotate clockwise, and the multiple sets of drive shafts 25 are respectively connected by synchronous belts, and the multiple sets of drive shafts 25 rotate synchronously. The outer walls of the multiple sets of drive shafts 25 are all threadedly connected with the inner wall of the baffle 26, so the baffle 26 is displaced, and the baffle 26 moves into the second material receiving bin 6, and the baffle 26 drives the mounting plate 27 to move, thereby driving the fixing column 28 to move;

[0051] When the fixed column 28 is displaced, the fixed column 28 moves into the movable cylinder 29, and the outer wall of the fixed column 28 is threadedly connected with the inner wall of the movable cylinder 29, driving the movable cylinder 29 to rotate, thereby driving the movable bevel gear 30 to rotate, and the movable bevel gear 30 is meshed and connected with a group of transmission bevel gears 32, and a group of transmission bevel gears 32 rotates, thereby driving the second transmission shaft 31 to rotate, and then driving another group of transmission bevel gears 32 to rotate, and the other group of transmission bevel gears 32 is meshed and connected with the linkage bevel gear 34, and the linkage bevel gear 34 rotates, thereby driving the first linkage shaft 33 to rotate. The first linkage shaft 33 is respectively connected with the second linkage shaft 35, one group of the second limiting shafts 36 and one group of the third limiting shafts 38 through a synchronous belt, so the second linkage shaft 35, one group of the second limiting shafts 36 and one group of the third limiting shafts 38 all rotate, and the second linkage shaft 35 is connected with a group of the second limiting shafts 36 through a synchronous belt, so one group of the second limiting shafts 36 rotates, and multiple groups of the second limiting shafts 36 and multiple groups of the third limiting shafts 38 are respectively connected through synchronous belts, so multiple groups of the second limiting shafts 36 and multiple groups of the third limiting shafts 38 rotate;

[0052] When the multiple sets of second limit shafts 36 rotate, the outer walls of the multiple sets of second limit shafts 36 are respectively threadedly connected with the inner walls of the two sets of support plates 37, and the two sets of support plates 37 move downward, so that the two sets of support plates 37 move into the inside of the device body 1, so that one end of the two sets of sieve plates 8 moves downward, and the two sets of sieve plates 8 respectively rotate with the first limit shaft 23 as the center of the circle, so that the two sets of sieve plates 8 are tilted, and the larger wheat seeds fall into the first receiving bin 4 and are discharged through the first discharge port 5, and the wheat seeds of appropriate volume fall into the second receiving bin 6 and fall to the upper end of the baffle 26, and the drive motor 24 is turned off;

[0053] When the multiple sets of third limiting shafts 38 rotate, the outer walls of the multiple sets of third limiting shafts 38 are threadedly connected with the inner wall of the movable plate 39, so the movable plate 39 moves upward to open the second discharge port 7;

[0054] When the wheat seeds on the upper ends of the two groups of sieve plates 8 fall into the first receiving bin 4 and the second receiving bin 6 respectively, the drive motor 24 is started, and the drive motor 24 drives a group of drive shafts 25 to rotate counterclockwise, thereby driving the baffle plate 26 and the fixed column 28 to reset, so that the wheat seeds on the upper end of the baffle plate 26 fall to the bottom of the second receiving bin 4, and at the same time, the movable plate 39 and the two groups of support plates 37 are reset, the second discharge port 7 is closed, and the two groups of support plates 37 respectively drive the two groups of sieve plates 8 to reset, and then the staff pours the next batch of wheat seeds into the device body 1 through the feed port 2;

[0055] The motor inside the bellows 13 is started, and the two sets of screening plates 8 screen the next batch of wheat seeds respectively;

[0056] When the motor inside the bellows 13 is started, the fan inside the bellows 13 rotates, and airflow is generated inside the bellows 13. The airflow enters the multiple groups of air outlet plates 18 through the air outlet pipe 17 and multiple groups of branch pipes. The airflow blows upward from the bottom of the wheat seeds inside the second collecting bin 6, so that light impurities (such as empty shells or straw) in the wheat seeds float upward. When airflow is generated inside the bellows 13, the bellows 13 transmits the negative pressure to the dust collecting box 20 through the air inlet pipe 19, so that the dust suction pipe 21 generates suction, and the suction force is transmitted to the dust suction plate 22. The dust suction plate 22 absorbs light impurities (such as empty shells or straw), thereby further improving the quality of the screened wheat seeds.

[0057] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A seed selection device for wheat breeding, comprising a device body (1), a feed inlet (2), a discharge plate (3) and a screening plate (8), characterized in that: The upper end of the device body (1) is provided with a material inlet (2), two groups of screening plates (8) are movably installed inside the device body (1), and a discharge plate (3) is obliquely installed inside the device body (1); The two groups of sieve plates (8) are provided with multiple groups of reserved holes, and the diameter of the multiple groups of reserved holes at the end of one group of sieve plates (8) is larger than the diameter of the multiple groups of reserved holes at the end of the other group of sieve plates (8). The outer walls of the two groups of sieve plates (8) are symmetrically provided with moving blocks (10). The inner wall of the device body (1) is symmetrically provided with multiple groups of first slide grooves (11), and the multiple groups of first slide grooves (11) are staggered. The multiple groups of first slide grooves (11) are movably provided with movable shafts (16), and the outer walls of the multiple groups of movable shafts (16) are provided with reciprocating thread grooves. The inner walls of the multiple groups of moving blocks (10) are provided with protrusions, and the multiple groups of protrusions are respectively movably connected to the reciprocating thread grooves on the outer walls of the multiple groups of movable shafts (16). The multiple groups of movable shafts (16) are respectively connected with synchronous belts. A bellows (13) is installed inside the device body (1), and a motor is installed inside the bellows (13); an output shaft (14) is installed at the output end inside the bellows (13), and a fan is installed on the outer wall of the output shaft (14); two groups of first transmission shafts (15) are movably installed inside the device body (1), and the two groups of first transmission shafts (15) are connected by a synchronous belt; the output shaft (14) extends to one end of the outer wall of the bellows (13) and is connected to a group of first transmission shafts (15) by a synchronous belt, and the two groups of first transmission shafts (15) are respectively connected to two groups of movable shafts (16) by a synchronous belt.

2. A seed selection device for wheat breeding according to claim 1, characterized in that: A first material receiving bin (4) and a second material receiving bin (6) are respectively provided on both sides of the device body (1), and one end of the discharge plate (3) is connected to the first material receiving bin (4), and one end of the first material receiving bin (4) and the second material receiving bin (6) are respectively provided with a first material discharge port (5) and a second material discharge port (7).

3. A seed selection device for wheat breeding according to claim 2, characterized in that: A plurality of drive shafts (25) are movably mounted inside the device body (1), and the plurality of drive shafts (25) are respectively connected by synchronous belts. A drive motor (24) is mounted inside the device body (1), and the output end of the drive motor (24) is connected to a group of drive shafts (25). A baffle (26) is movably mounted inside the device body (1), and the inner wall of the baffle (26) is respectively threadedly connected to the outer wall of the plurality of drive shafts (25). A mounting plate (27) is mounted on one end of the baffle (26), and a fixing column (28) is mounted on one end of the mounting plate (27).

4. A seed selection device for wheat breeding according to claim 3, characterized in that: A movable cylinder (29) is movably installed inside the device body (1), and the inner wall of the movable cylinder (29) is threadedly connected to the outer wall of the fixed column (28), and a movable bevel gear (30) is installed on the outer wall of the movable cylinder (29). A second transmission shaft (31) is movably installed inside the device body (1), and transmission bevel gears (32) are installed at both ends of the second transmission shaft (31), and a group of transmission bevel gears (32) are meshedly connected with the movable bevel gear (30).

5. A seed selection device for wheat breeding according to claim 4, characterized in that: A first linkage shaft (33) is movably mounted inside the device body (1), a linkage bevel gear (34) is mounted on one end of the first linkage shaft (33), and the linkage bevel gear (34) is meshingly connected with another set of transmission bevel gears (32); a second linkage shaft (35) is movably mounted inside the device body (1), and a synchronous belt is provided between the second linkage shaft (35) and the first linkage shaft (33).

6. A seed selection device for wheat breeding according to claim 5, characterized in that: A plurality of first limit shafts (23) are movably mounted inside the device body (1), and grooves are formed at one end of each of the plurality of first limit shafts (23). Limit blocks (9) are symmetrically mounted on the outer walls of one end of the two groups of sieve plates (8), and the plurality of limit blocks (9) are movably connected to the inner walls of the plurality of grooves, respectively. Two groups of support plates (37) are movably mounted inside the device body (1), and the two groups of support plates (37) are movably connected to the two groups of sieve plates (8), respectively.

7. A seed selection device for wheat breeding according to claim 6, characterized in that: A plurality of groups of second limit shafts (36) are movably installed inside the device body (1), and the plurality of groups of second limit shafts (36) are respectively connected by synchronous belts, a synchronous belt is provided between the first linkage shaft (33) and a group of second limit shafts (36) to be connected by a synchronous belt, and a synchronous belt is provided between the second linkage shaft (35) and another group of second limit shafts (36) to be connected by a synchronous belt, the outer walls of the plurality of groups of second limit shafts (36) are respectively threadedly connected to the inner walls of the two groups of support plates (37), and the inner wall of the device body (1) is symmetrically provided with a plurality of groups of second slide grooves (12), and the plurality of groups of second slide grooves (12) are respectively connected to the plurality of groups of first slide grooves (11).

8. A seed selection device for wheat breeding according to claim 5, characterized in that: A movable plate (39) is movably installed inside the device body (1), and the movable plate (39) is movably connected to the second discharge port (7). Multiple groups of third limit shafts (38) are movably installed inside the device body (1), and the outer walls of the multiple groups of third limit shafts (38) are respectively threadedly connected to the inner wall of the movable plate (39). The multiple groups of third limit shafts (38) are respectively connected by synchronous belts, and one group of the third limit shafts (38) is connected to the first linkage shaft (33) by a synchronous belt.

9. A seed selection device for wheat breeding according to claim 2, characterized in that: A plurality of groups of air outlet plates (18) are installed at the bottom end of the second material receiving bin (6), an air outlet pipe (17) is installed at the air outlet of the bellows (13), and branch pipes are respectively provided between the air outlet pipe (17) and the plurality of groups of air outlet plates (18), and filters are provided at the upper air outlets of the plurality of groups of air outlet plates (18).

10. A seed selection device for wheat breeding according to claim 9, characterized in that: A dust collecting box (20) is installed on the outer wall of the device body (1), an air inlet pipe (19) is installed at the air inlet of the wind box (13), and the other end of the air inlet pipe (19) is connected to the dust collecting box (20), and a dust suction plate (22) is installed on the upper end of the second material collecting bin (6), and a dust suction pipe (21) is provided between the dust suction plate (22) and the dust collecting box (20).

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