Buckwheat seed wind screening equipment

Abstract

The present invention relates to the technical field of agricultural machinery, and discloses a wind-powered buckwheat seed screening device, including a separation box, a receiving cover fixedly connected to the top of the separation box, a rotating shaft rotatably connected at the center of the inner wall of the receiving cover, a uniformly distributed support frame fixedly connected to the front and rear ends of the outer surface of the rotating shaft, a slider slidably connected to the inner wall of the support frame, a receiving bucket fixedly connected between two adjacent sliders, a thrust spring fixedly connected to the bottom of the slider, and a stacked plate fixedly connected to the bottom of the inner diameter of the receiving cover. Unprocessed buckwheat seeds are received by the receiving bucket, and at the opening edge of the receiving bucket, because the receiving bucket is of the same size and the internal volume is also the same, the weight difference received each time is small, so that during wind selection, the wind can penetrate the falling seeds, avoiding the inability of the wind to penetrate due to too much material, and solving the problem of incomplete wind selection.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, in particular to a wind-powered screening device for buckwheat seeds. Background Art

[0002] In agricultural production, buckwheat is an important food and economic crop, and its seed quality has a vital impact on the yield and quality after planting. The seeds need to be screened before planting to remove shriveled grains, broken grains and impurities to ensure the quality and germination rate of the seeds. Traditional buckwheat seed selection methods mostly rely on manual selection, which is not only inefficient, but also difficult to ensure the accuracy and consistency of screening. With the advancement of agricultural modernization, mechanical seed selection has gradually become the mainstream trend.

[0003] With the development of agricultural mechanization, some buckwheat seed selection equipment has emerged, but the existing equipment still has some shortcomings. The existing buckwheat seed selection equipment only pours all the seeds into the feed port during screening, resulting in too many seeds falling at the same time. The wind force of the wind selection equipment cannot penetrate the seeds in the second half for screening, resulting in sand and gravel mixed in the seeds after screening. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a buckwheat seed wind screening device, which solves the problem that too many seeds fall at the same time and the wind cannot penetrate them, resulting in incomplete wind screening.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a buckwheat seed wind screening equipment, including a separation box, a receiving cover is fixedly connected to the top of the separation box, a rotating shaft is rotatably connected to the center position of the inner wall of the receiving cover, the front and rear ends of the outer surface of the rotating shaft are fixedly connected to evenly distributed support frames, the inner wall of the support frame is slidably connected to sliders, a receiving bucket is fixedly connected between two adjacent sliders, a thrust spring is fixedly connected to the bottom of the slider, a stacking plate is fixedly connected to the bottom of the inner diameter of the receiving cover, and the outer diameter surface of the receiving cover is fixedly connected to There are two pull rods, a sealing plug plate is fixedly connected between the left ends of the two pull rods, the front and rear sides of the sealing plug plate are slidably connected to limit strips, a connecting frame is provided on the top of the sealing plug plate, a driving mechanism is provided on the rear side of the top of the separation box, the driving mechanism provides power for the entire equipment, a transfer bin is fixedly connected to the outer wall of the receiving cover, a connecting shaft is rotatably connected to the left side of the transfer bin, a seesaw is fixedly connected to the surface of the connecting shaft, and torsion springs are fixedly connected to the front and rear sides of the surface of the connecting shaft, and an air selection mechanism is provided on the outer wall of the separation box, and the air selection mechanism is used to separate buckwheat seeds.

[0006] Through the above technical solution, the receiving bucket is used to receive the unprocessed buckwheat seeds. Since the size of the receiving bucket is strictly consistent, the volume inside the receiving bucket is also highly consistent. This feature makes the weight difference of the received buckwheat seeds very small each time.

[0007] In the actual winnowing process, when buckwheat seeds fall from the receiving bucket, the uniform and appropriate distribution of seeds allows the wind to fully penetrate. It should be noted that if too much material is dropped, a large number of seeds will be densely accumulated, and the wind will encounter great resistance during the penetration process, and it will not be able to effectively screen and separate the seeds.

[0008] The design of the receiving bucket fundamentally solves this problem. The wind can act on the falling seeds without hindrance, ensuring that the wind separation work can be carried out thoroughly. No matter whether it is dry seeds, plump seeds, or sand and gravel mixed in them, they can be accurately separated and screened under the action of appropriate wind force, which greatly improves the effect and quality of wind separation.

[0009] Preferably, the driving mechanism comprises a driving motor, the driving motor is fixedly connected to the separation box, a reducer is fixedly connected to the output end of the driving motor, and the output end of the reducer is fixedly connected to the rotating shaft.

[0010] Through the above technical solution, the dried seeds and the gravel mixed therein can be effectively removed by means of the adjusted wind force;

[0011] On this basis, the buckwheat seeds are further graded with the help of grading screens. During the entire work process, the defective products are first quantitatively received and air-selected, followed by grading and screening. Each link is closely connected, thus successfully realizing the integrated operation of buckwheat seed screening and grading.

[0012] The above technical solution brings significant advantages. There is no need to perform separate seed grading. The cumbersome step-by-step operation in the past has been simplified, which greatly reduces the workload. The staff no longer need to run back and forth between different equipment and processes, saving a lot of time and energy.

[0013] At the same time, the integrated process reduces pauses and waiting in the intermediate links, greatly improving work efficiency. The screening and grading work that originally took a long time to complete can now be completed with high quality in a shorter time, providing efficient and convenient guarantees for the subsequent processing and application of buckwheat seeds.

[0014] Preferably, a sealing cover is fixedly connected to the rear side of the separation box, a screening box is arranged at the bottom of the sealing cover, a screen is fixedly connected inside the screening box, a connecting seat is fixedly connected to the bottom of the screening box, two vibration motors are fixedly connected to the front side of the connecting seat, two supporting members are fixedly connected to the left and right sides of the screening box, connecting springs are fixedly connected to the bottoms of four supporting members, a supporting seat is fixedly connected between the bottom ends of the four connecting springs, and evenly distributed spring locks are fixedly connected between the sealing cover and the screening box.

[0015] Preferably, a feed hopper is fixedly connected to the top of the receiving cover, and a bottom of the feed hopper is fixedly connected to a connecting frame.

[0016] Preferably, the two limit bars are fixedly connected to the inner diameter of the receiving cover, and the connecting frame is fixedly connected to the limit bars.

[0017] Preferably, the air selection mechanism includes a fan, and the fan output end is fixedly connected to three ventilation ducts, both ends of the three ventilation duct outputs are fixedly connected to air valves, and the opposite sides of the two air valves are fixedly connected to air outlet scoops, and the two air outlet scoops are fixedly connected to the separation box.

[0018] Preferably, a support rod is fixedly connected to the bottom of the fan, support legs are fixedly connected at the four corners of the bottom of the separation box, a bottom plate is fixedly connected between the bottoms of the four support legs, the support rod is fixedly connected to the bottom plate, and the bottom plate is fixedly connected to the support seat.

[0019] Preferably, the connecting shaft is rotationally connected to the receiving cover, and the torsion spring is fixedly connected to the receiving cover.

[0020] Preferably, the bottom ends of the thrust springs are fixedly connected to the bottom of the inner wall of the support frame.

[0021] Preferably, a first discharge hopper is provided at the rear side of the bottom of the screening box, and a second discharge hopper is provided at the front side of the first discharge hopper at the bottom of the screening box.

[0022] In the above technical solution, only one drive motor is used as the power source to drive the reducer. At the same time, the drive motor also successfully provides power to the fan through the transmission combination of the belt and the belt pulley.

[0023] It is worth mentioning that the unique ability of the reducer to slow down the speed and increase the torque is used to achieve the different speed requirements of the shaft and the fan. In actual operation, the shaft drives the receiving bucket to move in an orderly manner at an appropriate speed, and the fan generates appropriate wind force at its required speed to meet the requirements of wind selection.

[0024] It not only greatly optimizes the distribution and utilization of energy and significantly reduces energy consumption, but also reflects the active response and effective practice of environmental protection concepts. This single drive motor combined with a reducer mode effectively avoids energy waste and reduces the overall energy consumption of equipment operation. While ensuring efficient operation of the equipment, it minimizes the impact on the environment.

[0025] Working principle: First, pour the unprocessed buckwheat seeds into the feed hopper, then start the drive motor, and as the drive motor works, it drives the reducer to run, and then the reducer drives the rotating shaft in the receiving cover to rotate together. At the same time, the connection between the drive motor and the reducer provides power to the fan through the belt and the belt pulley, so that the fan works at the same time. When the rotating shaft rotates, it drives all the support frames on the surface to rotate together, and the sliders in the support frames also move together, so that the receiving bucket performs a cyclic reciprocating motion in the receiving cover. When the left side of the top of the receiving bucket contacts the right side of the sealing plug plate, the sealing plug plate is squeezed and pushed to the left as the receiving bucket moves, and the buckwheat seeds in the feed hopper will be discharged downward, and the buckwheat seeds fall into the receiving bucket;

[0026] The receiving bucket is also moving when receiving the seeds. Therefore, when the left side of the sealing plug plate is against the stacking plate, the receiving bucket also presses the thrust spring downward due to its own weight and the buckwheat seeds inside. The right side of the sealing plug plate loses thrust and is instantly pulled back to the right by the two pull bars. The receiving bucket continues to move along the inner surface of the stacking plate until it moves to the opening at the bottom of the stacking plate. The buckwheat seeds inside the receiving bucket fall downward into the separation box. The fan generates wind power and uses the three-way ventilation duct for diversion.

[0027] Then, during the falling process of the buckwheat seeds, the sand and gravel mixed in the buckwheat seeds that are lighter than the seeds are blown out through the left end of the three-way ventilation duct, and the seeds are retained to continue to fall. When passing through the right end of the three-way ventilation duct, the blown wind blows out the buckwheat seeds, and the sand and gravel that are heavier than the seeds continue to fall. The blown buckwheat seeds pass through the outlet on the rear side of the separation box and enter the screening box through the opening on the sealing cover. The two vibration motors are started at the same time, making the entire screening box vibrate. The buckwheat seeds are screened through the screen in the screening box, and the buckwheat seeds are divided into two different qualities, which are discharged from the first and second discharge hoppers respectively. The seeds screened by the screen are good products and are discharged from the second discharge hopper, and the fuller seeds that are not screened are discharged from the first discharge hopper;

[0028] When in use, the sealing plug plate is instantly pulled back to the right by two pull rods, and at the same time, the sealing plug plate pops out the buckwheat seeds between the feed hopper and the receiving bucket to the right. The popped-out buckwheat seeds pass through the seesaw, and then the seeds enter the transfer bin. The popped-out buckwheat seeds pass through the inside of the transfer bin and move downward to the exit position at the bottom. Further, with the rotation of the rotating shaft, the next receiving bucket moves to the exit at the bottom of the transfer bin, and the buckwheat seeds enter the second receiving bucket through the discharge port. After that, when the second receiving bucket moves to the top of the receiving cover, the left side of the top of the receiving bucket contacts the right side of the sealing plug plate. As the receiving bucket moves, the sealing plug plate is squeezed and pushed to the left, and the buckwheat seeds in the feed hopper will continue to discharge downward, and the buckwheat seeds fall into the receiving bucket. The popped-out buckwheat seeds continue to be transferred through the transfer bin.

[0029] The present invention provides a buckwheat seed wind screening device, which has the following beneficial effects:

[0030] 1. The present invention receives unprocessed buckwheat seeds through a receiving bucket, and the opening edge of the receiving bucket has a uniform size and a uniform internal volume, so that the weight difference received each time is small. Therefore, during air selection, the wind can penetrate the falling seeds, avoiding the problem of wind being unable to penetrate due to excessive material being dropped, thereby solving the problem of incomplete air selection.

[0031] 2. The present invention quantitatively receives buckwheat seeds, then performs air selection to remove shriveled seeds and gravel, and further utilizes a grading screen to grade the buckwheat seeds, thereby realizing integrated screening and grading of buckwheat seeds. There is no need to grade the seeds separately, thus reducing work intensity and improving work efficiency.

[0032] 3. The present invention uses a driving motor to drive the reducer to provide moving power for the receiving bucket, and provides power for the fan through a belt and a belt pulley. The ability of the reducer to slow down the rotation speed and increase the torque is utilized to achieve different rotation speeds of the rotating shaft and the fan, thereby reducing energy consumption and being more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A three-dimensional diagram of a buckwheat seed wind screening device according to the present invention;

[0034] Figure 2 It is a front view schematic diagram of a buckwheat seed wind screening device of the present invention;

[0035] Figure 3 It is a left schematic diagram of a buckwheat seed wind screening device of the present invention;

[0036] Figure 4 This is a schematic diagram of the internal structure of a receiving cover of a buckwheat seed wind screening device according to the present invention;

[0037] Figure 5 A schematic diagram of the stacked plate shape of a buckwheat seed wind screening device according to the present invention;

[0038] Figure 6 A schematic cross-sectional view of a screen, a sealing cover and a screening box of a buckwheat seed wind screening device according to the present invention;

[0039] Figure 7 This is a schematic diagram of the connection between a receiving cover and a transfer bin of a buckwheat seed wind screening device according to the present invention;

[0040] Figure 8 This is a schematic diagram of the connection between the seesaw and the transfer bin of a buckwheat seed wind screening device of the present invention;

[0041] Fig. 9 For the present invention Figure 8 The enlarged schematic diagram at A in the middle;

[0042] Fig.10 The present invention is a schematic top view of a buckwheat seed wind screening device.

[0043] Among them, 1. feed hopper; 2. reducer; 3. drive motor; 4. separation box; 5. fan; 6. support rod; 7. vibration motor; 8. receiving cover; 9. air valve; 10. air outlet hopper; 11. support leg; 12. bottom plate; 13. connecting seat; 14. support member; 15. spring lock; 16. connecting spring; 17. first discharge hopper; 18. second discharge hopper; 19. support seat; 20. slider; 21. thrust spring; 22. rotating shaft; 23. support frame; 24. receiving hopper; 25. connecting frame; 26. sealing plug plate; 27. limit strip; 28. pull strip; 29. ​​stacking plate; 30. screen; 31. sealing cover; 32. screening box; 33. three-way ventilation duct; 34. rocker; 35. connecting shaft; 36. torsion spring; 37. transfer bin. DETAILED DESCRIPTION

[0044] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings 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.

[0045] Please see attached Figure 1 -Attached Fig.10The embodiment of the present invention provides a wind-powered buckwheat seed screening device, including a separation box 4, a receiving cover 8 is fixedly connected to the top of the separation box 4, a rotating shaft 22 is rotatably connected to the center of the inner wall of the receiving cover 8, the front and rear ends of the outer surface of the rotating shaft 22 are fixedly connected to uniformly distributed support frames 23, the inner wall of the support frame 23 is slidably connected to a slider 20, a receiving bucket 24 is fixedly connected between two adjacent sliders 20, a thrust spring 21 is fixedly connected to the bottom of the slider 20, a stacking plate 29 is fixedly connected to the bottom of the inner diameter of the receiving cover 8, and two pull bars 28 are fixedly connected to the outer diameter surface of the receiving cover 8. A sealing plug plate 26 is fixedly connected between the left ends of the two pull strips 28, and the front and rear sides of the sealing plug plate 26 are slidably connected to the limit strips 27. A connecting frame 25 is arranged on the top of the sealing plug plate 26, and a driving mechanism is arranged on the top rear side of the separation box 4. The driving mechanism provides power for the entire equipment. A transfer bin 37 is fixedly connected to the outer wall of the receiving cover 8, and a connecting shaft 35 is rotatably connected to the left side of the transfer bin 37. A rocker 34 is fixedly connected to the surface of the connecting shaft 35, and torsion springs 36 are fixedly connected to the front and rear sides of the surface of the connecting shaft 35. A wind selection mechanism is arranged on the outer wall of the separation box 4, and the wind selection mechanism is used to separate buckwheat seeds.

[0046] The interior of the separation box 4 is divided into three parts. During the first air separation, the sand and gravel are discharged from the opening on the front side of the separation box 4, and the seeds roll down. During the second air separation, the seeds are blown out from the opening on the rear side of the separation box 4, and the sand and gravel fall down.

[0047] The sliding structure between the sealing plug plate 26 and the limit bar 27 adopts an arc-shaped guide rail design, which reduces the sliding resistance and enhances the stability of the movement of the sealing plug plate 26. The shape of the receiving bucket 24 is designed to be a structure that is wide at the top and narrow at the bottom, which can increase the capacity during feeding and allow seeds to fall more quickly during unloading. A connecting frame 25 is provided at the contact portion between the sealing plug plate 26 and the receiving cover 8 to enhance the sealing effect and prevent seeds from leaking at a non-unloading position.

[0048] Unprocessed buckwheat seeds are poured into the feed hopper 1. When the rotating shaft 22 rotates, all the support frames 23 on the surface are driven to rotate together, and the slider 20 in the support frame 23 also moves together, so that the receiving bucket 24 performs a cyclic reciprocating motion in the receiving cover 8. When the left side of the top of the receiving bucket 24 contacts the right side of the sealing plug plate 26, the sealing plug plate 26 is squeezed and pushed to the left as the receiving bucket 24 moves, and the buckwheat seeds in the feed hopper 1 are discharged downward, and the buckwheat seeds fall into the receiving bucket 24. The receiving bucket 24 is also pressed and pushed to the left because of its contact with the buckwheat inside. The weight of the wheat seeds presses the thrust spring 21 downward, and the right side of the sealing plug plate 26 loses thrust and is instantly pulled back to the right by the two pull bars 28. The receiving bucket 24 continues to move along the inner surface of the stacking plate 29 until it moves to the opening at the bottom of the stacking plate 29. The buckwheat seeds in the receiving bucket 24 fall downward into the separation box 4. The weight difference of each time received by the receiving bucket 24 is small, so when the buckwheat seeds are air-selected in the separation box 4, the wind can penetrate the falling seeds, avoiding the problem that the wind cannot penetrate due to too much material, thereby solving the problem of incomplete air selection.

[0049] After all the spring locks 15 are unlocked, the sealing cover 31 can be opened, and the canvas at the connection between the separation box 4 and the sealing cover 31 is removed, and the buckwheat seeds directly enter the screening box 32. When it is necessary to maintain, clean or replace the screen inside the screening box 32, after all the spring locks 15 are unlocked, the sealing cover 31 can be easily opened, and at the same time, the canvas at the connection between the separation box 4 and the sealing cover 31 is removed, so as to facilitate the inspection and maintenance of the inside of the screening box 32;

[0050] When not in use, the seesaw 34 is expanded outward due to the torsion of the two torsion springs 36. Since the seesaw 34 is connected by the connecting shaft 35, when the receiving bucket 24 moves, the seesaw 34 is squeezed by the receiving bucket 24, so that the seesaw 34 and the bottom of the sealing plug plate 26 maintain the same position, so that the buckwheat seeds that are bounced off can smoothly enter the transfer bin 37. At the same time, due to the torsion of the torsion spring 36, the seesaw 34 maintains a relatively horizontal state when not in use. When the receiving bucket 24 needs to pass, the receiving bucket 24 will squeeze the seesaw 34, so that the torsion spring 36 generates torque, so that the seesaw 34 is flush with the inside of the receiving cover 8, and the receiving bucket 24 passes smoothly.

[0051] See attached Figure 1 The driving mechanism includes a driving motor 3, which is fixedly connected to a separation box 4, a reducer 2 is fixedly connected to an output end of the driving motor 3, and an output end of the reducer 2 is fixedly connected to a rotating shaft 22.

[0052] Start the drive motor 3, and as the drive motor 3 works, it drives the reducer 2 to run, and then the reducer drives the rotating shaft 22 in the receiving cover 8 to rotate together. At the same time, the connection between the drive motor 3 and the reducer 2 provides power to the fan 5 through the belt and the belt pulley, so that the fan 5 works at the same time.

[0053] See attached Figure 3 A sealing cover 31 is fixedly connected to the rear side of the separation box 4, a screening box 32 is arranged at the bottom of the sealing cover 31, a screen 30 is fixedly connected inside the screening box 32, a connecting seat 13 is fixedly connected to the bottom of the screening box 32, two vibration motors 7 are fixedly connected to the front side of the connecting seat 13, two support members 14 are fixedly connected to the left and right sides of the screening box 32, connecting springs 16 are fixedly connected to the bottom of the four support members 14, a support seat 19 is fixedly connected between the bottom ends of the four connecting springs 16, and evenly distributed spring lock buckles 15 are fixedly connected between the sealing cover 31 and the screening box 32.

[0054] Buckwheat seeds pass through the outlet on the rear side of the separation box 4 and the opening on the sealing cover 31 into the screening box 32. The connector at the connection between the separation box 4 and the sealing cover 31 is a canvas, and the connection will not be broken due to the vibration of the screening box 32. The two vibration motors 7 are started at the same time, so that the entire screening box 32 vibrates. The buckwheat seeds are screened through the screen 30 in the screening box 32, and the buckwheat seeds are divided into two different qualities. When the vibration motor 7 starts the screening box 32 to vibrate, the four connecting springs 16 provide a buffering force.

[0055] See attached Figure 1 The top of the receiving cover 8 is fixedly connected to the feed hopper 1, and the bottom of the feed hopper 1 is fixedly connected to the connecting frame 25.

[0056] The two limiting strips 27 are both fixedly connected to the inner diameter of the receiving cover 8 , and the connecting frame 25 is fixedly connected to the limiting strips 27 .

[0057] See attached Figure 3 The air separation mechanism includes a fan 5, the output end of the fan 5 is fixedly connected to three ventilation ducts 33, both ends of the output of the three ventilation ducts 33 are fixedly connected to air valves 9, the opposite sides of the two air valves 9 are fixedly connected to air outlet scoops 10, and the two air outlet scoops 10 are fixedly connected to the separation box 4.

[0058] See attached Figure 3 A support rod 6 is fixedly connected to the bottom of the fan 5, support legs 11 are fixedly connected at the four corners of the bottom of the separation box 4, a bottom plate 12 is fixedly connected between the bottoms of the four support legs 11, the support rod 6 and the bottom plate 12 are fixedly connected, and the bottom plate 12 and the support seat 19 are fixedly connected.

[0059] The two air valves 9 can respectively control the wind force of the two output ports of the three-air duct 33. The wind force blown out from the output port on the left side is lighter through the adjustment of the air valve 9, which cannot blow the plump buckwheat seeds, but can only blow the shriveled seeds and sand and gravel lighter than the buckwheat seeds. The wind force blown out from the output port on the right side of the three-air duct 33 is heavier through the adjustment of the air valve 9, which blows out the buckwheat seeds, but cannot blow the sand and gravel heavier than the buckwheat seeds.

[0060] See attached Fig. 9 The connecting shaft 35 is rotationally connected to the receiving cover 8, and the torsion spring 36 is fixedly connected to the receiving cover 8.

[0061] After the outer ends of the two torsion springs 36 are fixed to the receiving cover 8, as the connecting shaft 35 and the receiving cover 8 rotate, when the seesaw 34 is squeezed by the receiving bucket 24, the contraction kinetic energy of the two torsion springs 36 cannot be released, and then as the sealing plug 26 is pulled by the two pull bars 28 and rebounds to its original position, the sealing plug 26 pops out the buckwheat seeds between the feed hopper 1 and the receiving bucket 24 to the right, and the popped-out buckwheat seeds pass through the seesaw 34, and then the seeds enter the transfer bin 37, and the popped-out buckwheat seeds pass through the inside of the transfer bin 37 and move downward to the outlet position at the bottom. , further with the rotation of the rotating shaft 22, the next receiving bucket 24 moves to the outlet at the bottom of the transfer bin 37, and the buckwheat seeds enter the second receiving bucket 24 through the discharge port. After that, when the second receiving bucket 24 moves to the top inside the receiving cover 8, the left side of the top of the receiving bucket 24 contacts the right side of the sealing plug plate 26. As the receiving bucket 24 moves, the sealing plug plate 26 is squeezed and pushed to the left, and the buckwheat seeds in the feed hopper 1 continue to discharge downward, and the buckwheat seeds fall into the receiving bucket 24. The popped-up buckwheat seeds continue to be transferred through the transfer bin 37.

[0062] See attached Figure 4 The bottom end of the thrust spring 21 is fixedly connected to the bottom of the inner wall of the support frame 23 .

[0063] See attached Figure 3 A first discharge hopper 17 is provided at the rear side of the bottom of the screening box 32 , and a second discharge hopper 18 is provided at the front side of the first discharge hopper 17 at the bottom of the screening box 32 .

[0064] Seeds of different qualities are discharged from the first discharge hopper 17 and the second discharge hopper 18 respectively. The seeds screened out by the screen 30 are good products and are discharged from the second discharge hopper 18, and the fuller seeds that are not screened out are discharged from the first discharge hopper 17.

[0065] The rotating shaft 22 is made of high-strength stainless steel, has excellent torsional strength and corrosion resistance, and can remain stable and not bend during long-term operation;

[0066] The support frame 23 is made of a solid aluminum alloy material, which is light in weight but high in strength, and has good wear resistance, and can effectively withstand the wear caused by long-term sliding;

[0067] The receiving bucket 24 is made of wear-resistant high manganese steel, which has high hardness and excellent wear resistance, and is not easily damaged even if it rubs against the seeds frequently;

[0068] The slider 20 is made of special wear-resistant cast iron, which can slide smoothly in the support frame without being easily worn while ensuring strength;

[0069] The sealing insert 26 is made of a titanium alloy material with good elasticity and strength, which is not only resistant to stretching, but also can maintain its shape during repeated actions;

[0070] The pull strip 28 is made of thick wear-resistant rubber, has good flexibility, excellent sealing effect, and can withstand long-term stretching;

[0071] The impeller of the fan 5 is made of wear-resistant ceramic material, which can resist airflow impact and wear when rotating at high speed to deliver air;

[0072] The transfer bin 37 is welded from solid stainless steel plates, and the inner wall is coated with a wear-resistant coating, which can effectively prevent damage caused by scratches on the seeds;

[0073] The thrust spring 21 is made of high carbon steel spring, which has excellent elasticity, is not easy to be deformed by fatigue, and can provide stable supporting force for the receiving bucket;

[0074] The stacking plate 29 is made of wear-resistant manganese steel plate, which has high hardness and good wear resistance and can withstand the friction of the receiving bucket for a long time.

[0075] 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 buckwheat seed wind screening device, comprising a separation box (4), characterized in that: The top of the separation box (4) is fixedly connected to a receiving cover (8), the center position of the inner wall of the receiving cover (8) is rotatably connected to a rotating shaft (22), the front and rear ends of the outer surface of the rotating shaft (22) are fixedly connected to evenly distributed support frames (23), the inner wall of the support frame (23) is slidably connected to a slider (20), a receiving bucket (24) is fixedly connected between two adjacent sliders (20), the bottom of the slider (20) is fixedly connected to a thrust spring (21), the bottom of the inner diameter of the receiving cover (8) is fixedly connected to a stacking plate (29), the outer diameter surface of the receiving cover (8) is fixedly connected to two pull bars (28), and the left ends of the two pull bars (28) are fixedly connected between them. A sealing plug plate (26) is connected, and both the front and rear sides of the sealing plug plate (26) are slidably connected to limit strips (27). A connecting frame (25) is arranged on the top of the sealing plug plate (26). A driving mechanism is arranged on the rear side of the top of the separation box (4), and the driving mechanism provides power for the entire device. The outer wall of the receiving cover (8) is fixedly connected to a transfer bin (37). The left side of the transfer bin (37) is rotatably connected to a connecting shaft (35). A seesaw (34) is fixedly connected to the surface of the connecting shaft (35). Both the front and rear sides of the surface of the connecting shaft (35) are fixedly connected to torsion springs (36). The outer wall of the separation box (4) is provided with a wind selection mechanism, and the wind selection mechanism is used to separate buckwheat seeds.

2. The buckwheat seed wind screening device according to claim 1, characterized in that: The driving mechanism comprises a driving motor (3), the driving motor (3) being fixedly connected to a separation box (4), the output end of the driving motor (3) being fixedly connected to a reducer (2), and the output end of the reducer (2) being fixedly connected to a rotating shaft (22).

3. The buckwheat seed wind screening device according to claim 1, characterized in that: A sealing cover (31) is fixedly connected to the rear side of the separation box (4), a screening box (32) is arranged at the bottom of the sealing cover (31), a screen (30) is fixedly connected inside the screening box (32), a connecting seat (13) is fixedly connected to the bottom of the screening box (32), two vibration motors (7) are fixedly connected to the front side of the connecting seat (13), two support members (14) are fixedly connected to the left and right sides of the screening box (32), four connecting springs (16) are fixedly connected to the bottom of the four connecting springs (16), a supporting seat (19) is fixedly connected between the bottom ends of the four connecting springs (16), and uniformly distributed spring lock buckles (15) are fixedly connected between the sealing cover (31) and the screening box (32).

4. The buckwheat seed wind screening device according to claim 1, characterized in that: The top of the receiving cover (8) is fixedly connected to a feed hopper (1), and the bottom of the feed hopper (1) is fixedly connected to a connection frame (25).

5. The buckwheat seed wind screening device according to claim 1, characterized in that: The two limit strips (27) are both fixedly connected to the inner diameter of the receiving cover (8), and the connection frame (25) is fixedly connected to the limit strip (27).

6. The buckwheat seed wind screening device according to claim 1, characterized in that: The air separation mechanism comprises a fan (5), the output end of the fan (5) being fixedly connected to three ventilation pipes (33), both output ends of the three ventilation pipes (33) being fixedly connected to air valves (9), the opposite sides of the two air valves (9) being fixedly connected to air outlet scoops (10), and the two air outlet scoops (10) being fixedly connected to the separation box (4).

7. The buckwheat seed wind screening device according to claim 6, characterized in that: The bottom of the fan (5) is fixedly connected to a support rod (6), the four corners of the bottom of the separation box (4) are fixedly connected to support legs (11), the bottoms of the four support legs (11) are fixedly connected to a bottom plate (12), the support rod (6) and the bottom plate (12) are fixedly connected, and the bottom plate (12) and the support seat (19) are fixedly connected.

8. The buckwheat seed wind screening device according to claim 1, characterized in that: The connecting shaft (35) is rotationally connected to the receiving cover (8), and the torsion spring (36) is fixedly connected to the receiving cover (8).

9. The buckwheat seed wind screening device according to claim 1, characterized in that: The bottom ends of the thrust springs (21) are fixedly connected to the bottom of the inner wall of the support frame (23).

10. The buckwheat seed wind screening device according to claim 3, characterized in that: A first discharge hopper (17) is provided at the rear side of the bottom of the screening box (32), and a second discharge hopper (18) is provided at the front side of the first discharge hopper (17) at the bottom of the screening box (32).

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