Wheat seed sorting equipment

Abstract

The invention relates to the technical field of wheat seed sorting, in particular to wheat seed sorting equipment which comprises a base and a sorting box, and a double-shaft vibration motor is fixedly mounted on the top surface of the sorting box; a material guide mechanism, a second screen and a first screen are mounted in the sorting box; the material guide assembly comprises a material guide plate; a jacking assembly is arranged under the material guide plate. The material guide plate is of a hollow structure, a plurality of evenly-distributed protruding columns are fixedly installed on the top face of the material guide plate, air outlet groove holes are formed in the protruding columns, a pipe connector is fixedly connected to the bottom face of the material guide plate in a penetrating mode, and the pipe connector is connected with an air blowing assembly. According to the wheat winnowing device, the winnowing time of wheat seeds can be effectively prolonged through the arrangement of the material guide plate, the distribution uniformity of the wheat seeds on the material guide plate can be improved while the winnowing function is achieved through the matched arrangement of the convex column and the air blowing assembly, the penetrating performance of airflow to the wheat seeds can be effectively improved in combination with vibration to the wheat seeds, and therefore the wheat seeds can be effectively winnowed. And therefore, the winnowing impurity removal performance is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wheat seed sorting, and specifically, it is a wheat seed sorting device. Background Art

[0002] Wheat seed sorting is a key link in agricultural scientific research and production, directly affecting seeding uniformity, emergence rate and final yield. At present, the mainstream wheat seed sorting technology is mainly the sorting technology combining vibration and air separation.

[0003] Existing sorting devices usually include a frame, a vibration motor, a sieve mesh, a feed bin and a blower. When in use, wheat seeds are added to the feed bin, and the wheat seeds in the feed bin fall onto the sieve mesh. The vibration motor makes the sieve mesh vibrate, thereby completing the sorting of wheat seeds; among them, when the wheat seeds fall onto the sieve mesh, the blower generates an air flow to blow towards the wheat seeds, thereby removing light impurities in the wheat seeds.

[0004] However, the existing sorting devices still have the following deficiencies in the use process: During the process of wheat seeds falling for air separation, the falling time is short, and the wheat seeds are unevenly distributed during the falling process, making the air flow unable to penetrate the wheat seeds well, resulting in insufficient separation of light impurities (such as empty shells and straw fragments). Summary of the Invention

[0005] The purpose of the present invention is to provide a wheat seed sorting device to solve the problems raised in the above background art.

[0006] The purpose of the present invention can be achieved through the following technical solutions: A wheat seed sorting device includes a base and a sorting box. There is an elastic support assembly fixedly connected between the bottom surface of the sorting box and the top surface of the base. A double-shaft vibration motor is fixedly installed on the top surface of the sorting box, and a feeding mechanism is also fixedly installed on the top surface of the base; both the top and bottom surfaces of the sorting box are inclined planes, and the included angle between the top and bottom surfaces of the sorting box is an acute angle. A feeding port is opened at a position near the higher end on the top surface of the sorting box. A discharge chute 1 is fixedly installed in a through manner at a position near the top on the end surface of the sorting box far from the feeding port. A discharge chute 2, a discharge chute 3 and a discharge chute 4 are fixedly installed in a through manner from top to bottom in the middle and lower part of the end surface of the sorting box near the feeding port; A guide mechanism, a second sieve mesh and a first sieve mesh are installed in the sorting box from top to bottom in sequence. The guide mechanism is parallel to the top surface of the sorting box, and the second sieve mesh and the first sieve mesh are parallel to the bottom surface of the sorting box; The guide assembly includes a guide plate that is in sliding contact with the inner wall of the sorting box. Slide rods are installed in a through manner at positions near the four corners of the guide plate. There are bumps fixedly connected between the top and bottom ends of the slide rods and the inner wall of the sorting box. A blanking slot is opened at the lower end of the guide plate; A lifting component that is rotatably installed between the two sides of the sorting box is fixedly connected directly below the material guiding plate; The material guiding plate is of a hollow structure. A plurality of evenly distributed convex columns are fixedly installed on the top surface of the material guiding plate. Air outlet groove holes that communicate with the inside of the material guiding plate are formed in the convex columns. A pipe joint is fixedly connected to the bottom surface of the material guiding plate in a through manner. One end of the pipe joint away from the material guiding plate is fixedly connected to a blowing component arranged outside the sorting box.

[0007] Furthermore, the axis of the convex column is perpendicular to the top surface of the material guiding plate. The part of the air outlet groove hole away from the material guiding plate is a structure that bends upward. One end of the air outlet groove hole away from the material guiding plate is located on the periphery of the convex column, and one end of the air outlet groove hole away from the material guiding plate is aligned with the direction close to the first discharge chute.

[0008] Furthermore, one end of the double-shaft vibration motor is fixedly connected to a transmission shaft. A bearing seat fixedly arranged on the top surface of the sorting box is installed on the periphery of the transmission shaft. One end of the transmission shaft away from the double-shaft vibration motor is fixedly installed with a first driving pulley and a second driving pulley.

[0009] Furthermore, the lifting component includes a suspension plate and a rotating shaft. The rotating shaft is rotatably installed between the two sides of the sorting box. A cam is fixedly installed at the middle position on the periphery of the rotating shaft. Driving grooves are formed at both ends of the cam; There are two suspension plates. Both suspension plates are fixedly installed on the bottom surface of the material guiding plate, and the two suspension plates are respectively located at both ends of the cam. A smooth shaft parallel to the rotating shaft is rotatably connected to the bottom end position on the side of the suspension plate close to the cam. One end of the smooth shaft away from the suspension plate is inserted into the corresponding driving groove, and the periphery of the smooth shaft is in sliding contact with the inner wall of the driving groove; One end of the rotating shaft close to the bearing seat rotatably penetrates the side of the sorting box and then is fixedly installed with a second driven pulley. A second belt is installed between the second driven pulley and the second driving pulley.

[0010] Furthermore, roller shafts are arranged in the first discharge chute and at the position in the sorting box close to the feed inlet. The roller shaft in the first discharge chute is installed between the two sides of the first discharge chute, and the roller shaft in the first discharge chute is located at the upper position of the first discharge chute; The roller shafts in the sorting box are rotatably installed between the two sides of the sorting box. A conveyor belt parallel to the top surface of the sorting box is installed between the two roller shafts. The width of the conveyor belt is equal to the width of the top surface of the sorting box; One end of the roller shaft in the first discharge chute close to the bearing seat rotatably penetrates the side of the first discharge chute and then is fixedly installed with a first driven pulley. A first belt is installed between the first driven pulley and the first driving pulley.

[0011] Furthermore, an inclined scraper is fixedly connected to the inner top surface of the discharge chute, and the front end of the scraper is in sliding contact with the outer surface of the conveyor belt.

[0012] Furthermore, the feeding mechanism includes two support plates fixedly mounted on the top surface of the base, the top ends of the two support plates are fixedly connected to a mounting plate located directly above the feed port, a hopper is fixedly mounted through the mounting plate, and a corrugated material guide pipe is fixedly connected between the bottom end of the hopper and the feed port; The rear end of the mounting plate is fixedly connected with a convex seat for mounting the blowing assembly.

[0013] Furthermore, the blowing assembly includes a blower fixed on the boss, the air outlet of the blower is fixedly connected to a telescopic hose 1, the end of the telescopic hose 1 away from the blower is fixedly connected to a conduit, the end of the conduit away from the telescopic hose 1 is fixedly passed through the side of the sorting box to the interior of the sorting box, and the conduit is located between the material guide plate and the second screen, and a telescopic hose 2 is fixedly connected between the end of the conduit located in the sorting box and the pipe joint.

[0014] Furthermore, the second screen comprises a screen plate, the top surface of which is provided with a plurality of screen holes distributed in a rectangular array, and the screen holes are rectangular holes; The top surface of the sieve plate is fixedly installed with L-shaped limit plates at both sides, and the top surface of the sieve plate is also slidably installed with a rectangular frame, the two sides of the rectangular frame are respectively located in the two L-shaped limit plates, a plurality of array-distributed baffle bars 2 are fixedly connected between the two length sides of the rectangular frame along its length direction, and a plurality of array-distributed baffle bars 1 are fixedly connected between the two width sides of the rectangular frame along its length direction, and the baffle bars 1 and 2 are respectively used to control the width and length of the sieve hole; A screw is threadedly installed in the middle position of the outer side surface of the L-shaped limit plate, one end of the screw located in the L-shaped limit plate is rotatably connected to a contact plate arranged between the top surface of the L-shaped limit plate and the sieve plate, the contact plate is in sliding contact with the L-shaped limit plate and the sieve plate, and a knob is fixedly installed on one end of the screw located outside the L-shaped limit plate; Bolts are threadedly installed at both ends of the top surface of the L-shaped limiting plate, and a friction pad is rotatably installed at the front end of the bolt.

[0015] Furthermore, the support assembly includes a spring, and the spring is fixedly connected to the bottom surface of the sorting box at positions close to the four corners, and the spring is perpendicular to the top surface of the base; A support rod is fixedly connected between the bottom end of the spring and the top surface of the base.

[0016] Beneficial effects of the present invention: 1. The present invention can effectively prolong the air selection time of wheat seeds through the setting of the guide plate, and through the coordinated setting of the convex column and the blowing component, while realizing the air selection function, it can also improve the distribution uniformity of the wheat seeds on the guide plate. Combined with the vibration of the wheat seeds, it can effectively improve the penetration performance of the airflow on the wheat seeds, thereby improving the performance of air selection and impurity removal.

[0017] 2. Through the setting of the air outlet slot holes, the convex column can improve the uniformity of wheat seed distribution while also enabling the convex column to realize the air selection function as an air flow nozzle. At the same time, the bending design of the air outlet slot holes can cooperate with the top surface of the sorting box to guide light impurities to the discharge trough 1 for discharge. Furthermore, by aligning the air outlet of the air outlet slot holes with the discharge trough 1, it is possible to prevent fallen wheat seeds and impurities from falling into the air outlet slot holes, so that it has good anti-blocking performance, thereby improving the working stability of the present invention.

[0018] 3. The present invention uses the setting of the jacking component to superimpose vertical scattering motion on the basis of vibration when the wheat seeds move on the guide plate, thereby amplifying the movement difference between impurities and full seeds. During the scattering process, light impurities are more easily captured by the airflow, while heavy seeds fall back quickly, thereby improving the separation accuracy.

[0019] 4. The second screen adopts an adjustable screen hole structure. The screw drives the contact plate and the bolt to lock it, so as to realize the up and down / left and right translation of the rectangular frame and accurately control the effective opening of the screen hole. The screen hole parameters can be adjusted by simply screwing the screw and the bolt, without replacing the screen, which significantly improves the versatility of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative work. Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 yes Figure 1 A three-dimensional schematic diagram from another angle; Figure 3 yes Figure 2 A magnified view of part A; Figure 4 It is a three-dimensional schematic diagram of the internal structure of the sorting box in the present invention; Figure 5 yes Figure 4 A magnified view of part B; Figure 6 It is a structural schematic diagram of the connection relationship between the convex column and the guide plate in the present invention; Figure 7 yesFigure 5 Enlarged view of part C; Figure 8 is Figure 5 Enlarged view of part D; Figure 9 It is a schematic structural diagram of the second sieve mesh in the present invention; Figure 10 is Figure 9 Left view of; The reference numerals in the figure are as follows: 1 - Base, 2 - Support rod, 3 - Spring, 4 - Sorting box, 5 - Support plate, 6 - Mounting plate, 7 - Hopper, 8 - Corrugated feed pipe, 9 - Double - shaft vibration motor, 10 - First discharge chute, 11 - Conduit, 12 - First telescopic hose, 13 - Convex seat, 14 - Blower, 15 - Second discharge chute, 16 - Third discharge chute, 17 - Fourth discharge chute, 18 - Bearing seat, 19 - First driving pulley, 20 - First belt, 21 - Second driving pulley, 22 - Second belt, 23 - First driven pulley, 24 - Roller shaft, 25 - Second driven pulley, 26 - Rotating shaft, 27 - First sieve mesh, 28 - Second sieve mesh, 29 - Conveyor belt, 30 - Second telescopic hose, 31 - Pipe joint, 32 - Guide plate, 33 - Convex column, 34 - Feed inlet, 35 - Cam, 36 - Driving groove, 37 - Suspension plate, 38 - Optical axis, 39 - Lowering chute opening, 40 - Convex block, 41 - Slide bar, 42 - Sieve plate, 43 - Rectangular frame, 44 - L - shaped limiting plate, 45 - Screw, 46 - Bolt, 47 - First retaining bar, 48 - Second retaining bar, 49 - Sieve hole, 50 - Contact plate, 51 - Friction pad, 52 - Air outlet slot hole, 53 - Scraper. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0022] Embodiment 1: Please refer to Figures 1 to 7, in an embodiment of the present invention, a wheat seed sorting device includes a base 1 and a sorting box 4. An elastic support assembly is fixedly connected between the bottom surface of the sorting box 4 and the top surface of the base 1. A double-shaft vibration motor 9 is fixedly installed on the top surface of the sorting box 4. An inlet mechanism is also fixedly installed on the top surface of the base 1. The top and bottom surfaces of the sorting box 4 are both inclined planes, and the included angle between the top and bottom surfaces of the sorting box 4 is an acute angle. A feed inlet 34 is opened at a position near the higher end on the top surface of the sorting box 4. A first discharge chute 10 is fixedly installed in a through manner at a position near the top on the end surface of the sorting box 4 away from the feed inlet 34. A second discharge chute 15, a third discharge chute 16, and a fourth discharge chute 17 are fixedly installed in a through manner from top to bottom at a position in the middle and lower part on the end surface of the sorting box 4 near the feed inlet 34; A guide mechanism, a second screen 28, and a first screen 27 are installed in the sorting box 4 from top to bottom in sequence. The guide mechanism is parallel to the top surface of the sorting box 4, and the second screen 28 and the first screen 27 are parallel to the bottom surface of the sorting box 4; The guide assembly includes a guide plate 32 that is in sliding contact with the inner wall of the sorting box 4. Slide rods 41 are installed in a through manner at positions near the four corners of the guide plate 32. Protrusions 40 are fixedly connected between the top and bottom ends of the slide rods 41 and the inner wall of the sorting box 4. A material discharge slot 39 is opened at the lower end of the guide plate 32; A jacking assembly that is rotatably installed between the two sides of the sorting box 4 is fixedly connected directly below the guide plate 32; The guide plate 32 is of a hollow structure. A plurality of evenly distributed convex columns 33 are fixedly installed on the top surface of the guide plate 32. Air outlet slot holes 52 that communicate with the inside of the guide plate 32 are opened in the convex columns 33. A pipe joint 31 is fixedly connected in a through manner to the bottom surface of the guide plate 32. One end of the pipe joint 31 away from the guide plate 32 is fixedly connected to a blowing assembly arranged outside the sorting box 4.

[0023] Among them, the axis of the convex column 33 is perpendicular to the top surface of the guide plate 32. The part of the air outlet slot hole 52 away from the guide plate 32 is a structure that bends upward. One end of the air outlet slot hole 52 away from the guide plate 32 is located on the periphery of the convex column 33, and one end of the air outlet slot hole 52 away from the guide plate 32 is aligned with the direction close to the first discharge chute 10. The outlet direction of the air outlet slot hole 52 is misaligned with the wheat seed flow path (at an inclination angle of 30° - 45°), so as to prevent seeds from falling into the hole; One end of the double-shaft vibration motor 9 is fixedly connected to a transmission shaft. A bearing seat 18 fixedly arranged on the top surface of the sorting box 4 is installed on the periphery of the transmission shaft. A first driving pulley 19 and a second driving pulley 21 are fixedly installed at one end of the transmission shaft away from the double-shaft vibration motor 9.

[0024] Among them, the feeding mechanism includes two support plates 5 fixedly installed on the top surface of the base 1. A mounting plate 6 located directly above the feeding port 34 is fixedly connected between the tops of the two support plates 5. A hopper 7 is fixedly installed through the mounting plate 6. A corrugated guide pipe 8 is fixedly connected between the bottom end of the hopper 7 and the feeding port 34; The tail end of the mounting plate 6 is fixedly connected with a convex seat 13 for installing the blowing assembly.

[0025] Among them, the blowing assembly includes a blower 14 fixed on the convex seat 13. The air outlet of the blower 14 is fixedly connected with a first telescopic hose 12. One end of the first telescopic hose 12 away from the blower 14 is fixedly connected with a conduit 11. One end of the conduit 11 away from the first telescopic hose 12 fixedly penetrates through the side surface of the sorting box 4 to the inside of the sorting box 4, and the conduit 11 is located between the guide plate 32 and the second sieve 28. A second telescopic hose 30 is fixedly connected between one end of the conduit 11 located in the sorting box 4 and the pipe joint 31.

[0026] Among them, the support assembly includes springs 3. Springs 3 are fixedly connected to the bottom surface of the sorting box 4 near the four corners. The springs 3 are perpendicular to the top surface of the base 1; A support rod 2 is fixedly connected between the bottom end of the spring 3 and the top surface of the base 1.

[0027] The sorting of wheat seeds is a key link in agricultural scientific research and production, directly affecting seeding uniformity, emergence rate and final yield. At present, the mainstream wheat seed sorting technology is mainly the sorting technology combining vibration and air separation. However, during the use of existing sorting equipment, the falling and air separation time of wheat seeds is relatively short, and the wheat seeds during the falling process are unevenly distributed, so that the air flow cannot penetrate the wheat seeds well, resulting in insufficient separation of light impurities (such as empty shells and straw fragments).

[0028] When the present invention is in use: Start the double-shaft vibration motor 9 and the blower 14. The double-shaft vibration motor 9 cooperates with the springs 3 to realize the overall vibration of the sorting box 4; then pour the wheat seeds into the hopper 7. The wheat seeds in the hopper 7 enter the sorting box 4 through the corrugated guide pipe 8 and fall to the higher end of the guide plate 32. Then, under the vibration and inclination of the guide plate 32, the wheat seeds on the guide plate 32 move in the direction close to the blanking slot 39; During the movement of wheat seeds on the material guiding plate 32, through multiple evenly arranged convex columns 33, the flow path of particles can be effectively changed, aggregation can be reduced, and the uniformity of the even distribution of wheat seeds on the material guiding plate 32 can be effectively improved. At the same time, the blower 14 supplies air to the material guiding plate 32 through the first telescopic hose 12, the conduit 11, and the second telescopic hose 30. The air flow in the material guiding plate 32 is blown out through the air outlet slot holes 52, and the blowing direction is obliquely upward. Combined with the vibration of the material guiding plate 32, light impurities can be effectively blown up. The blown-up light impurities move to the first discharge chute 10 under the action of wind force and the guiding effect of the top surface of the sorting box 4, and are finally discharged.

[0029] Therefore, in the present invention, through the setting of the material guiding plate 32, the air separation time of wheat seeds can be effectively extended. And through the combined setting of the convex columns 33 and the blowing assembly, while realizing the air separation function, the distribution uniformity of wheat seeds on the material guiding plate 32 can be improved. Combined with the vibration of wheat seeds, the penetration performance of the air flow to wheat seeds can be effectively improved, thereby improving the performance of air separation and impurity removal.

[0030] Among them, through the setting of the air outlet slot holes 52, while the convex columns 33 improve the distribution uniformity of wheat seeds, the convex columns 33 also serve as air flow nozzles to realize the air separation function. At the same time, the bent design of the air outlet slot holes 52 can cooperate with the top surface of the sorting box 4 to guide the light impurities into the first discharge chute 10 to be discharged. Further, by aligning the air outlet of the air outlet slot holes 52 with the first discharge chute 10, it can prevent the dropped wheat seeds and impurities from falling into the air outlet slot holes 52, making it have good anti-blocking performance, thereby improving the working stability of the present invention.

[0031] Embodiment 2: Please refer to Figures 2 to 5 、 Figure 7 and Figure 8 On the basis of Embodiment 1, the jacking assembly includes a suspension plate 37 and a rotating shaft 26. The rotating shaft 26 is rotatably installed between the two sides of the sorting box 4. A cam 35 is fixedly installed at the middle position of the outer periphery of the rotating shaft 26. Driving grooves 36 are opened at both ends of the cam 35; There are two suspension plates 37. Both suspension plates 37 are fixedly installed on the bottom surface of the material guiding plate 32, and the two suspension plates 37 are respectively located at both ends of the cam 35. A smooth shaft 38 parallel to the rotating shaft 26 is rotatably connected to the bottom end position on the side of the suspension plate 37 close to the cam 35. One end of the smooth shaft 38 away from the suspension plate 37 is inserted into the corresponding driving groove 36, and the outer periphery of the smooth shaft 38 is in sliding contact with the inner wall of the driving groove 36; One end of the rotating shaft 26 close to the bearing seat 18 rotatably penetrates through the side of the sorting box 4 and is fixedly installed with a driven pulley two 25. A belt two 22 is installed between the driven pulley two 25 and the driving pulley two 21.

[0032] During the operation of the double-shaft vibration motor 9, the second driving pulley 21 is driven to rotate. The second driving pulley 21 drives the second driven pulley 25 to rotate through the second belt 22. The second driven pulley 25 drives the rotating shaft 26 to rotate, and the rotating shaft 26 drives the cam 35 to rotate. The rotation of the cam 35 in cooperation with the optical axis 38 and the hanging plate 37 can drive the material guiding plate 32 to perform reciprocating vertical lifting movement under the vertical limiting action of the four sliding rods 41. Therefore, during the movement of the wheat seeds on the material guiding plate 32, a vertical throwing movement is superimposed on the vibration basis, amplifying the movement difference between impurities and plump seeds. During the throwing process, light impurities are more easily captured by the air flow, while heavy seeds quickly fall back, improving the separation accuracy.

[0033] Embodiment 3: Please refer to Figures 2 to 5 , on the basis of Embodiment 2, roller shafts 24 are arranged at positions close to the feed inlet 34 in both the first discharge chute 10 and the sorting box 4. The roller shaft 24 in the first discharge chute 10 is installed between the two sides of the first discharge chute 10, and the roller shaft 24 in the first discharge chute 10 is located at the upper position of the first discharge chute 10; The roller shaft 24 in the sorting box 4 is rotatably installed between the two sides of the sorting box 4. A conveyor belt 29 parallel to the top surface of the sorting box 4 is installed between the two roller shafts 24. The width of the conveyor belt 29 is equal to the width of the top surface of the sorting box 4; One end of the roller shaft 24 in the first discharge chute 10 close to the bearing seat 18 rotatably penetrates through the side of the first discharge chute 10 and is fixedly installed with a first driven pulley 23. A first belt 20 is installed between the first driven pulley 23 and the first driving pulley 19.

[0034] Among them, an inclined scraping plate 53 is fixedly connected to the inner top surface of the first discharge chute 10. The front end of the scraping plate 53 is in sliding contact with the outer surface of the conveyor belt 29.

[0035] The double-shaft vibration motor 9 also drives the first driving pulley 19 to rotate. The first driving pulley 19 drives the roller shaft 24 to rotate through the first belt 20 and the first driven pulley 23, so that the conveyor belt 29 performs a conveying movement on the top of the sorting box 4. Through this setting, the blown impurities can be brought into contact with the conveyor belt 29. The conveying of the conveyor belt 29 in cooperation with the wind force can stably guide the impurities into the first discharge chute 10, avoiding the accumulation of impurities on the top surface of the sorting box 4; at the same time, through the setting of the scraping plate 53, the impurities attached to the surface of the conveyor belt 29 can be scraped off in cooperation with the movement of the conveyor belt 29, thereby improving the stability of impurity discharge and enabling the conveyor belt 29 to have a self-cleaning function, improving the practicability of the present invention.

[0036] Embodiment 4: Please refer to Figure 9 and Figure 10, on the basis of Embodiment 2, the second sieve 28 includes a sieve plate 42. A plurality of sieve holes 49 distributed in a rectangular array are formed in the top surface of the sieve plate 42, and the sieve holes 49 are rectangular holes; L-shaped limit plates 44 are fixedly installed at both side positions on the top surface of the sieve plate 42. A rectangular frame 43 is also slidably installed on the top surface of the sieve plate 42. Both sides of the rectangular frame 43 are respectively located in the two L-shaped limit plates 44. A plurality of second blocking bars 48 distributed in an array are fixedly connected along the length direction between the two length sides of the rectangular frame 43, and a plurality of first blocking bars 47 distributed in an array are fixedly connected along the length direction between the two width sides of the rectangular frame 43. The first blocking bars 47 and the second blocking bars 48 are respectively used to control the width and length of the sieve holes 49; A screw rod 45 is threadedly installed through the middle position of the outer side surface of the L-shaped limit plate 44. One end of the screw rod 45 located in the L-shaped limit plate 44 is rotatably connected to a contact plate 50 arranged between the top surface of the L-shaped limit plate 44 and the sieve plate 42. The contact plate 50 is in sliding contact with the L-shaped limit plate 44 and the sieve plate 42. A knob is fixedly installed at one end of the screw rod 45 located outside the L-shaped limit plate 44; Bolts 46 are threadedly installed through both end positions on the top surface of the L-shaped limit plate 44, and friction pads 51 are rotatably installed at the front ends of the bolts 46.

[0037] Among them, the rectangular frame 43, the first blocking bars 47 and the sieve holes 49 form a grid-shaped blocking member on the top surface of the sieve plate 42. As Figure 9 shown, moving the rectangular frame 43 upward drives a plurality of first blocking bars 47 to block the sieve holes 49, so that the width of the sieve holes 49 can be adjusted. Similarly, moving the rectangular frame 43 to the left drives the second blocking bars 48 to block the sieve holes 49, so that the length of the sieve holes 49 can be adjusted. Therefore, by translating the rectangular frame 43, the length and width of the sieve holes 49 can be adjusted within a certain range.

[0038] Specifically, when moving up and down, loosen the bolts 46, rotate the upper screw rod 45 to drive the upper contact plate 50 to separate from the rectangular frame 43, and then rotate the lower screw rod 45 so that the lower contact plate 50 drives the rectangular frame 43 to move upward until the rectangular frame 43 contacts the upper contact plate 50, thus completing the up and down translation of the rectangular frame 43; when moving left and right, loosen the bolts 46, and then directly translate the rectangular frame 43 left and right.

[0039] Therefore, the second sieve 28 adopts an adjustable sieve hole structure. By driving the contact plate with a screw rod and locking with a bolt, the up / down and left / right translation of the rectangular frame is realized, and the effective opening of the sieve hole is accurately controlled (such as the adjustment range is 5-10 mm). Only by screwing the screw rod and the bolt can the sieve hole parameters be adjusted, and there is no need to replace the sieve, which significantly improves the versatility of the equipment.

[0040] The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A wheat seed sorting device, including a base (1) and a sorting box (4), wherein a feeding mechanism is fixedly installed on the base (1), and it is characterized in that: The sorting box (4) is connected to the base (1) through an elastic support assembly. The top and bottom surfaces of the sorting box (4) are both inclined, and a double-shaft vibration motor (9) is installed on the top surface. A feed inlet (34) is opened at the top of the sorting box (4), a first discharge chute (10) is provided at the end far from the feed inlet (34), and a second discharge chute (15), a third discharge chute (16), and a fourth discharge chute (17) are sequentially arranged from top to bottom at the end near the feed inlet (34). A material guiding mechanism, a second sieve mesh (28), and a first sieve mesh (27) are arranged in the sorting box (4) in layers from top to bottom. Among them, the material guiding mechanism is arranged parallel to the top surface of the sorting box, and the second sieve mesh (28) and the first sieve mesh (27) are arranged parallel to the bottom surface. The material guiding mechanism includes a material guiding plate (32) that is slidably matched with the inner wall of the sorting box. The four corners of the material guiding plate (32) form a sliding pair with the bumps (40) on the inner wall of the box through sliding rods (41). A blanking notch (39) is provided at the lower end of the material guiding plate (32), and a jacking assembly is provided directly below it. The material guiding plate (32) adopts a hollow cavity structure. Convex columns (33) with air outlet slots (52) are arrayed on the top surface. The bottom surface is connected to an external blowing assembly through a pipe joint (31). The air outlet slots (52) form a bent air duct inside the convex columns, and the outlet ends face the direction of the first discharge chute (10).

2. The wheat seed sorting device according to claim 1, characterized in that, The axis of the convex column (33) is perpendicular to the top surface of the material guiding plate (32). The part of the air outlet slot (52) far from the material guiding plate (32) is a structure bent upward. One end of the air outlet slot (52) far from the material guiding plate (32) is located on the periphery of the convex column (33), and one end of the air outlet slot (52) far from the material guiding plate (32) is aligned with the direction close to the first discharge chute (10).

3. The wheat seed sorting device according to claim 1, characterized in that, One end of the double-shaft vibration motor (9) is fixedly connected with a transmission shaft. A bearing seat (18) fixedly arranged on the top surface of the sorting box (4) is installed on the periphery of the transmission shaft. A first driving pulley (19) and a second driving pulley (21) are fixedly installed at the end of the transmission shaft far from the double-shaft vibration motor (9).

4. The wheat seed sorting device according to claim 3, characterized in that, The jacking assembly includes a suspension plate (37) and a rotating shaft (26). The rotating shaft (26) is rotatably installed between the two sides of the sorting box (4). A cam (35) is fixedly installed at the middle position of the periphery of the rotating shaft (26). Driving grooves (36) are opened at both ends of the cam (35). Two suspension plates (37) are provided. Both suspension plates (37) are fixedly installed on the bottom surface of the material guiding plate (32), and the two suspension plates (37) are respectively located at both ends of the cam (35). A smooth shaft (38) parallel to the rotating shaft (26) is rotatably connected to the bottom end position of the side surface of the suspension plate (37) close to the cam (35). One end of the smooth shaft (38) far from the suspension plate (37) is inserted into the corresponding driving groove (36), and the periphery of the smooth shaft (38) is in sliding contact with the inner wall of the driving groove (36). One end of the rotating shaft (26) close to the bearing seat (18) rotatably penetrates through the side of the sorting box (4) and then a second driven pulley (25) is fixedly installed. A second belt (22) is installed between the second driven pulley (25) and the second driving pulley (21).

5. The wheat seed sorting device according to claim 3, wherein, Rollers (24) are provided in the first discharge chute (10) and in the sorting box (4) near the feed inlet (34). The roller (24) in the first discharge chute (10) is installed between the two sides of the first discharge chute (10), and the roller (24) in the first discharge chute (10) is located at the upper position of the first discharge chute (10). The roller (24) in the sorting box (4) is rotatably installed between the two sides of the sorting box (4). A conveyor belt (29) parallel to the top surface of the sorting box (4) is installed between the two rollers (24). The width of the conveyor belt (29) is equal to the width of the top surface of the sorting box (4). One end of the roller (24) in the first discharge chute (10) close to the bearing seat (18) rotatably penetrates the side of the first discharge chute (10) and is fixedly installed with a first driven pulley (23). A first belt (20) is installed between the first driven pulley (23) and the first driving pulley (19).

6. The wheat seed sorting device according to claim 5, characterized in that, An inclined scraper (53) is fixedly connected to the inner top surface of the first discharge chute (10). The front end of the scraper (53) is in sliding contact with the outer surface of the conveyor belt (29).

7. The wheat seed sorting device according to claim 1, characterized in that, The feeding mechanism includes two support plates (5) fixedly installed on the top surface of the base (1). A mounting plate (6) located directly above the feed inlet (34) is fixedly connected between the tops of the two support plates (5). A hopper (7) is fixedly installed through the mounting plate (6). A corrugated guide pipe (8) is fixedly connected between the bottom end of the hopper (7) and the feed inlet (34). A convex seat (13) for installing the blowing assembly is fixedly connected to the tail end of the mounting plate (6).

8. An equipment for sorting wheat seeds according to claim 7, characterized in that, The blowing assembly includes a blower (14) fixed on the convex seat (13). An expansion hose one (12) is fixedly connected to the air outlet of the blower (14). One end of the expansion hose one (12) away from the blower (14) is fixedly connected to a conduit (11). One end of the conduit (11) away from the expansion hose one (12) fixedly penetrates the side surface of the sorting box (4) to the inside of the sorting box (4), and the conduit (11) is located between the guide plate (32) and the second sieve (28). An expansion hose two (30) is fixedly connected between one end of the conduit (11) in the sorting box (4) and the pipe joint (31).

9. The wheat seed sorting device according to claim 1, characterized in that, The second sieve (28) includes a sieve plate (42). A plurality of sieve holes (49) distributed in a rectangular array are formed on the top surface of the sieve plate (42). The sieve holes (49) are rectangular holes. On the top surface of the sieve plate (42), L-shaped limit plates (44) are fixedly installed at both side positions. A rectangular frame (43) is also slidably installed on the top surface of the sieve plate (42). The two sides of the rectangular frame (43) are respectively located in the two L-shaped limit plates (44). Between the two length sides of the rectangular frame (43), a plurality of strip-shaped stoppers two (48) are fixedly connected along its length direction in an array distribution. And between the two width sides of the rectangular frame (43), a plurality of strip-shaped stoppers one (47) are fixedly connected along its length direction in an array distribution. The strip-shaped stoppers one (47) and the strip-shaped stoppers two (48) are respectively used to control the width and length of the sieve holes (49). A screw rod (45) is installed through-threadedly at the middle position of the outer side surface of the L-shaped limit plate (44). One end of the screw rod (45) located in the L-shaped limit plate (44) is rotatably connected to a contact plate (50) arranged between the top surface of the L-shaped limit plate (44) and the sieve plate (42). The contact plate (50) is in sliding contact with the L-shaped limit plate (44) and the sieve plate (42). One end of the screw rod (45) located outside the L-shaped limit plate (44) is fixedly installed with a knob. Bolts (46) are installed through-threadedly at both end positions of the top surface of the L-shaped limit plate (44). The front ends of the bolts (46) are rotatably installed with friction pads (51).

10. A wheat seed sorting device according to claim 1, characterized in that, The support assembly includes springs (3). Springs (3) are fixedly connected to the bottom surface of the sorting box (4) at positions close to the four corners. The springs (3) are perpendicular to the top surface of the base (1). A support rod (2) is fixedly connected between the bottom end of the spring (3) and the top surface of the base (1).

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