Efficient seed selection device for cowpea planting and use method

Abstract

The invention discloses an efficient seed selection device for cowpea planting and a using method, the efficient seed selection device comprises a base frame, a collecting box is fixed in the middle of the base frame, a supporting frame is hinged to one side of the top of the base frame, and a second angle adjusting plate is installed on the other side of the top of the base frame; the second angle adjusting plate is fixedly connected with the end of the supporting frame through a bolt, the top of the supporting frame is connected with a supporting plate through a first damping spring, a screen is arranged in the middle of the supporting plate, a supporting frame matched with the screen is fixed to the top of the supporting plate, and a vibration motor is arranged on the rear side of the supporting frame. The cowpea seed impurity removal device has the beneficial effects that through the design of the impurity removal mechanism and the shielding mechanism, the intermittent discharging action of the material box can be achieved while impurity grabbing work is conducted on cowpea seeds in the material box, then separation of impurities and cowpea seeds is achieved, and discharging of the material box is matched with the screening action of a screen.

Description

Technical Field

[0001] The invention relates to the technical field of cowpea planting equipment, and in particular to a high-efficiency seed selection device for cowpea planting and a use method thereof. Background Art

[0002] Before planting cowpeas, it is usually necessary to screen the cowpeas to ensure that there are no sundries such as shriveled grains, broken grains, and bean husks in the cowpeas for seed. At present, when screening cowpeas, sieves are usually used directly for screening. During the screening process, sundries such as shriveled grains, bean husks, and bean stalks cannot be quickly and massively screened out, which is not conducive to the large-scale production and planting of cowpeas and the improvement of seed selection speed, and also affects the overall quality of the cowpeas for seed.

[0003] Currently, no effective solution has been proposed for the problems in the related technologies. Summary of the invention

[0004] In view of the problems in the related art, the present invention proposes an efficient seed selection device for cowpea planting and a use method to overcome the above-mentioned technical problems existing in the existing related technology.

[0005] To this end, the specific technical solution adopted by the present invention is as follows:

[0006] The top of the support frame is provided with a support plate through a damping spring, and a screen is provided in the middle of the support plate, and a support frame matched with the screen is fixed on the top of the support plate. A vibration motor is provided on the rear side of the support frame, and a material box and an angle adjustment plate are respectively hingedly connected to the top of the support frame and fixedly connected, and the side edges of the material box are connected and fixed to the angle adjustment plate through bolts. A discharge port matched with the support frame is provided at the bottom of the material box, a shielding mechanism matched with the discharge port is provided in the inner wall of the material box, and a debris cleaning mechanism is provided at the top center of the material box.

[0007] Preferably, the debris cleaning mechanism includes an installation opening opened at the top center of the material box, a cover plate is installed in the installation opening, an inner cavity is opened inside the cover plate, a driving motor is fixed on one side of the inner cavity, the bottom output end of the driving motor passes through the inner cavity and is connected and fixed to a driving gear, a rotating cylinder is rotatably connected on the other side of the inner cavity and located at the center of the cover plate, an outer gear ring meshing with the driving gear is fixed on the top outer surface of the rotating cylinder, the bottom end of the rotating cylinder movably passes through the interior of the material box, and two protrusions are symmetrically fixed to the bottom of the rotating cylinder.

[0008] Preferably, the debris cleaning mechanism also includes a fixed shaft fixed inside the inner cavity and a cavity opened inside the rotating cylinder, the fixed shaft and the rotating cylinder have the same central axis, the end of the fixed shaft movably penetrates into the cavity, the fixed shaft has a plurality of fixed bevel gears evenly fixed on the outer surface of one side of the cavity, a plurality of groups of rotating shafts are rotatably connected to the side wall of the cavity, a linkage bevel gear meshing with the fixed bevel gear is fixed to the end of the rotating shaft, the end of the rotating shaft movably penetrates to the outside of the rotating cylinder and is connected and fixed to a plurality of side rods.

[0009] Preferably, a plurality of conical rods are fixed to the outer surface of the side rod, a plurality of piercing members are provided on the conical rods, a plurality of return blocks are fixed on the piercing members at equal intervals, the return blocks are truncated cone-shaped structures, and the diameter of the small bottom surface of the truncated cone-shaped structure is the same as the diameter of the piercing members.

[0010] Preferably, the shielding mechanism includes an active cavity opened in the middle of the inner walls on both sides of the discharge port, a sliding plate is slidably connected to the inside of the active cavity, a baffle is fixed in the middle of one side of the sliding plate, the end of the baffle passes through the discharge port, the baffles on both sides block the discharge port, and a damping spring 2 is connected between the inner wall of the active cavity and the sliding plate.

[0011] Preferably, the shielding mechanism also includes a movable opening opened at the top center of the movable cavity, a connecting plate is slidably connected in the movable opening, the connecting plate is an L-shaped structure, one end of the connecting plate is connected and fixed to the outer surface of the sliding plate, the other end of the connecting plate passes through the interior of the material box and is connected and fixed to the sliding seat, and the length of the sliding seat is adapted to the rotation trajectory of the protrusion.

[0012] Preferably, the support plate and the support frame are slidably connected via a slide rod and a slide sleeve, and the slide rod and the slide sleeve are respectively fixed on the support plate and the support frame.

[0013] Preferably, a through hole is opened in the middle of the support frame, and the screen corresponds to the through hole.

[0014] Preferably, a material guide plate is provided on one side of the top of the support frame, and a feed hopper is provided on the side of the material box.

[0015] According to another aspect of the present invention, there is provided a method for using a high-efficiency seed selection device for planting cowpea, which is used for the high-efficiency seed selection device for planting cowpea, comprising the following steps:

[0016] The cowpea seeds are poured into the material box through the feed hopper, and the cowpea seeds in the material box are stirred by the debris cleaning mechanism. During the stirring, the debris cleaning mechanism pierces and grabs the bean shells, bean stalks and other debris mixed in the cowpea seeds, so as to separate the debris from the cowpea seeds;

[0017] When the debris cleaning mechanism pierces and grabs the debris in the cowpea seeds, it will synchronously drive the shielding mechanism blocked in the discharge port at the bottom of the material box so that the discharge port can be opened intermittently, thereby realizing the discharge action of the cowpea seeds;

[0018] The cowpea seeds falling from the discharge port will fall onto the screen of the support frame. At the same time, the vibration motor starts to drive the support plate and the support frame to vibrate, thereby giving the cowpea seeds accumulated on the screen the power to vibrate and move forward, so that the cowpea seeds can move along the screen to the guide plate. In the process of movement, several cowpea seeds will fall through the screen because of their round shape and be collected in the collection box, while the shriveled, bad or broken cowpea seeds and temporarily stored debris will accumulate on the screen and will not fall. As the screen vibrates, the shriveled, bad or broken cowpea seeds and temporarily stored debris will move to the guide plate for material collection and processing.

[0019] The beneficial effects of the present invention are:

[0020] Through the design of the debris cleaning mechanism and the shielding mechanism, the bean seeds in the material box can be grabbed while the intermittent discharge of the material box can be realized, thereby realizing the separation of debris and cowpea seeds and achieving the adaptation of the discharge of the material box and the screening action of the screen.

[0021] Through the design of the debris cleaning mechanism, the driving motor is started to drive the active gear and the outer gear ring to rotate and then drive the rotating drum to rotate. When the rotating drum rotates, it will drive several groups of internal rotating shafts and linked bevel gears to rotate horizontally. Because the linked bevel gear is in a meshing state with the fixed bevel gear, the linked bevel gear will move on the fixed bevel gear when it rotates horizontally, thereby realizing the longitudinal rotation of the linked bevel gear. The linked bevel gear will drive the rotating shaft to rotate longitudinally, and the rotating shaft will drive the side rod, the conical rod and the piercing piece to rotate longitudinally, and finally realize the synchronous horizontal and longitudinal rotation of the side rod, the conical rod and the piercing piece, so that the piercing piece is fully in contact with the accumulated cowpea seeds, which is convenient for the piercing piece to pierce the debris in the cowpea seeds together, so that the debris is separated from the cowpea seeds.

[0022] Through the design of the shielding mechanism, the two protrusions at the end will be driven to rotate horizontally during the horizontal rotation of the rotating drum. The protrusions are located on the sides of the sliding seat, so when the protrusions rotate, they will squeeze and push the sides of the sliding seat, and then under the action of the movable opening and the connecting plate, the sliding seat will move in a straight line and move the sliding plate below in a straight line. The linear movement of the sliding plate will drive the baffle blocked in the discharge port to move into the movable cavity and squeeze the damping spring 2. When the protrusion rotates to disengage from the sliding seat, under the action of the damping spring 2, the sliding plate and the baffle are reset and moved, and the baffle is blocked inside the discharge port again, thereby realizing intermittent discharging of the material box to avoid too much discharge and the screen having no time to screen.

[0023] The anti-return block has a truncated cone structure and the diameter of the small bottom surface of the truncated cone structure is the same as the diameter of the piercing piece. When the piercing piece pierces and inserts into the debris, the debris will quickly pass through the anti-return block along the conical side surface of the side of the anti-return block. When the debris wants to escape from the anti-return block, the large bottom surface of the truncated cone structure will hinder the debris, making it impossible for the debris to escape from the piercing piece. In addition, the debris pierced on the piercing piece can be quickly processed by burning methods such as a flame spray gun.

[0024] Through the design of the sliding seat, the dimension of the sliding seat in the length direction matches the circular rotation trajectory of the protrusion, and it only matches one-fourth of the circular rotation trajectory of the protrusion, so that the protrusion can squeeze and contact the sliding seat when rotating, thereby pushing the sliding seat to move. The dimension of the sliding seat in the width direction matches the movable opening, so that the sliding seat can cover the movable opening before and after sliding, preventing bean seeds and debris from entering the movable opening and interfering with and damaging the shielding mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 The structure of a high-efficiency seed selection device for cowpea planting according to an embodiment of the present invention is shown in FIG. Figure 1 ;

[0027] Figure 2 The structure of a high-efficiency seed selection device for cowpea planting according to an embodiment of the present invention is shown in FIG. Figure 2 ;

[0028] Figure 3 The structure of a high-efficiency seed selection device for cowpea planting according to an embodiment of the present invention is shown in FIG. Figure 3 ;

[0029] Figure 4 It is a schematic diagram of the connection structure between a cover plate and a debris cleaning mechanism of a high-efficiency seed selection device for cowpea planting according to an embodiment of the present invention;

[0030] Figure 5 This is a schematic structural diagram of a cleaning mechanism of a high-efficiency seed selection device for cowpea planting according to an embodiment of the present invention;

[0031] Figure 6 It is a schematic diagram of the connection structure of the side rod, the conical rod, the piercing member, and the return block of a high-efficiency seed selection device for cowpea planting according to an embodiment of the present invention;

[0032] Figure 7 It is a schematic diagram of the connection structure between the piercing member and the anti-return block of a high-efficiency seed selection device for cowpea planting according to an embodiment of the present invention;

[0033] Figure 8 It is a schematic diagram of the connection structure of the protrusion and the shielding mechanism of a high-efficiency seed selection device for cowpea planting according to an embodiment of the present invention;

[0034] Fig. 9 The schematic diagram of the connection structure between the material box and the shielding mechanism of a high-efficiency seed selection device for cowpea planting according to an embodiment of the present invention is Figure 1 ;

[0035] Fig.10 The schematic diagram of the connection structure between the material box and the shielding mechanism of a high-efficiency seed selection device for cowpea planting according to an embodiment of the present invention is Figure 2 ;

[0036] Fig.11 This is a schematic diagram of the structure of a connecting plate of a high-efficiency seed selection device for cowpea planting according to an embodiment of the present invention;

[0037] Fig.12 The schematic diagram of the connection structure between the material box and the shielding mechanism of a high-efficiency seed selection device for cowpea planting according to an embodiment of the present invention is Figure 3 ;

[0038] Fig.13 The present invention is a flowchart of the steps of a method for using a high-efficiency seed selection device for planting cowpea according to an embodiment of the present invention.

[0039] In the figure:

[0040] 1. Base frame; 2. Collecting box; 3. Support frame; 4. Support plate; 5. Screen; 6. Support frame; 7. Guide plate; 8. Damping spring 1; 9. Vibration motor; 10. Angle adjustment plate 1; 11. Material box; 12. Cover plate; 13. Inner cavity; 14. Driving motor; 15. Driving gear; 16. Rotating cylinder; 17. Outer gear ring; 18. Cavity; 19. Fixed shaft; 20. Fixed bevel gear; 21. Rotating shaft; 22. Linked bevel gear; 23. Side rod; 24. Conical rod; 25. Piercing piece; 26. Return block; 27. Discharge port; 28. Active cavity; 29. ​​Sliding plate; 30. Baffle; 31. Damping spring 2; 32. Active opening; 33. Connecting plate; 34. Sliding seat; 35. Bump; 36. Angle adjustment plate 2. DETAILED DESCRIPTION

[0041] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0042] According to an embodiment of the present invention, a high-efficiency seed selection device for cowpea planting and a use method are provided.

[0043] Embodiment 1;

[0044] like Figure 1-Figure 12As shown, according to the embodiment of the present invention, the efficient seed selection device for planting cowpea includes a base frame 1, a collecting box 2 is fixed in the middle of the base frame 1, a support frame 3 is hinged on one side of the top of the base frame 1, an angle adjustment plate 2 36 is installed on the other side of the top of the base frame 1, the angle adjustment plate 2 36 is fixed to the end of the support frame 3 by bolts, the top of the support frame 3 is connected to a support plate 4 by a damping spring 1 8, the support plate 4 and the support frame 3 are slidably connected by a sliding rod and a sliding sleeve, the sliding rod and the sliding sleeve are respectively fixed to the support plate 4 and the support frame 3, a screen 5 is provided in the middle of the support plate 4, a through hole is opened in the middle of the support frame 3, the screen 5 corresponds to the through hole, a material guide plate 7 is provided on one side of the top of the support frame 3, and a guide plate 7 is fixed on the top of the support plate 4 corresponding to the screen 5 A supporting frame 6 is matched with the supporting frame 6, and a vibration motor 9 is provided on the rear side of the supporting frame 6. A material box 11 and an angle adjustment plate 10 are respectively hingedly connected to the top of the supporting frame 6. The side of the material box 11 is fixedly connected to the angle adjustment plate 10 by bolts. A discharge port 27 matching with the supporting frame 6 is provided at the bottom of the material box 11. A shielding mechanism matching with the discharge port 27 is provided in the inner wall of the material box 11. A debris cleaning mechanism is provided at the center of the top of the material box 11, and a feeding hopper is provided on the side of the material box 11. Through the design of the debris cleaning mechanism and the shielding mechanism, the bean seeds in the material box 11 can be caught while the intermittent discharge action of the material box 11 can be realized, thereby realizing the separation of debris and cowpea seeds and realizing the matching of the discharge of the material box 11 with the screening action of the screen 5.

[0045] Embodiment 2:

[0046] like Figure 4-Figure 11As shown, the debris cleaning mechanism includes an installation opening opened at the top center of the material box 11, a cover plate 12 is installed in the installation opening, an inner cavity 13 is opened inside the cover plate 12, a driving motor 14 is fixed on one side of the inner cavity 13, the bottom output end of the driving motor 14 penetrates into the inner cavity 13 and is connected and fixed to a driving gear 15, a rotating cylinder 16 is rotatably connected to the other side of the inner cavity 13 and located at the center of the cover plate 12, an outer tooth ring 17 meshing with the driving gear 15 is fixed on the top outer surface of the rotating cylinder 16, the bottom end of the rotating cylinder 16 movably penetrates into the interior of the material box 11, and the rotating cylinder The bottom of the rotating cylinder 16 is symmetrically fixed with two protrusions 35. The debris cleaning mechanism also includes a fixed shaft 19 fixed inside the inner cavity 13 and a cavity 18 opened inside the rotating cylinder 16. The fixed shaft 19 has the same central axis as the rotating cylinder 16. The end of the fixed shaft 19 movably penetrates into the cavity 18. The fixed shaft 19 is evenly fixed with a plurality of fixed bevel gears 20 on the outer surface of one side of the cavity 18. A plurality of groups of rotating shafts 21 are rotatably connected to the side wall of the cavity 18. The end of the rotating shaft 21 is fixed with a linkage bevel gear 22 meshing with the fixed bevel gear 20. The end of the rotating shaft 21 is movable. The outer side of the rotating cylinder 16 is connected and fixed with a plurality of side rods 23, and a plurality of conical rods 24 are fixed on the outer surface of the side rods 23. The conical rods 24 are provided with a plurality of piercing members 25, and a plurality of return blocks 26 are fixed on the piercing members 25 at equal intervals. The return blocks 26 are truncated cone-shaped structures, and the diameter of the small bottom surface of the truncated cone-shaped structure is the same as the diameter of the piercing members 25. Through the design of the debris cleaning mechanism, the driving motor 14 is started to drive the driving gear 15 and the outer gear ring 17 to rotate, and then drive the rotating cylinder 16 to rotate. When the rotating cylinder 16 rotates, it will drive the internal plurality of rotating shafts 21 and the linked conical gears 22 to rotate horizontally. Because the linkage bevel gear 22 is in meshing state with the fixed bevel gear 20, the linkage bevel gear 22 will move on the fixed bevel gear 20 when rotating horizontally, thereby realizing the longitudinal rotation of the linkage bevel gear 22, and the linkage bevel gear 22 will drive the rotating shaft 21 to rotate longitudinally, and the rotating shaft 21 will drive the side rod 23, the conical rod 24 and the piercing member 25 to rotate longitudinally, and finally realize the synchronous lateral and longitudinal rotation of the side rod 23, the conical rod 24 and the piercing member 25, so that the piercing member 25 can fully contact with the accumulated cowpea seeds, so that the piercing member 25 can pierce the debris in the cowpea seeds together, so that the debris is separated from the cowpea seeds.

[0047] Embodiment three;

[0048] like Figure 8-Figure 12As shown, the shielding mechanism includes an active cavity 28 opened in the middle of the inner walls on both sides of the discharge port 27, a sliding plate 29 is slidably connected to the interior of the active cavity 28, a baffle 30 is fixed to the middle of one side of the sliding plate 29, the end of the baffle 30 passes through the discharge port 27, the baffles 30 on both sides block the discharge port 27, a damping spring 21 is connected between the inner wall of the active cavity 28 and the sliding plate 29, the shielding mechanism also includes an active opening 32 opened at the top center of the active cavity 28, a connecting plate 33 is slidably connected to the active opening 32, the connecting plate 33 is an L-shaped structure, one end of the connecting plate 33 is connected and fixed to the outer surface of the sliding plate 29, the other end of the connecting plate 33 passes through the interior of the material box 11 and is connected and fixed to a sliding seat 34, the length of the sliding seat 34 is The rotation trajectory of the protrusion 35 is adapted; through the design of the shielding mechanism, during the horizontal rotation of the rotating cylinder 16, the two protrusions 35 at the end will be driven to rotate horizontally. The protrusion 35 is located on the side of the sliding seat 34, so when the protrusion 35 rotates, it will squeeze and push the side of the sliding seat 34, and then under the action of the movable opening 32 and the connecting plate 33, the sliding seat 34 will move linearly and carry the sliding plate 29 below to move linearly. The linear movement of the sliding plate 29 will drive the baffle 30 blocked in the discharge port 27 to move into the active cavity 28 and squeeze the damping spring 21. When the protrusion 35 rotates to disengage from the sliding seat 34, under the action of the damping spring 21, the sliding plate 29 and the baffle 30 are reset and moved, and the baffle 30 is blocked inside the discharge port 27 again, thereby realizing the intermittent discharge action of the material box 11, avoiding too much discharge and the screen 5 having no time to screen.

[0049] Embodiment 4:

[0050] like Figure 1-Figure 13 As shown, according to an embodiment of the present invention, a method for using a high-efficiency seed selection device for planting cowpea is also provided, and the method for using the high-efficiency seed selection device for planting cowpea comprises the following steps:

[0051] Step S101, pouring cowpea seeds into the material box 11 through the feed hopper, stirring the cowpea seeds in the material box 11 through the debris cleaning mechanism, while stirring, the debris cleaning mechanism will pierce and grab the bean shells, bean stalks and other debris mixed in the cowpea seeds, so as to separate the debris from the cowpea seeds;

[0052] Step S103, when the debris cleaning mechanism pierces and grabs the debris in the cowpea seeds, it will synchronously drive the shielding mechanism blocked in the discharge port 27 at the bottom of the material box 11 so that the discharge port 27 can be intermittently opened to realize the cowpea seed discharge action;

[0053] Step S105, the cowpea seeds falling from the discharge port 27 will fall onto the screen 5 of the support frame 6. At the same time, the vibration motor 9 is started to drive the support plate 4 and the support frame 6 to vibrate, thereby giving the cowpea seeds accumulated on the screen 5 a force to vibrate and move forward, so that the cowpea seeds can move along the screen 5 to the guide plate 7. During the movement, several cowpea seeds will fall through the screen 5 due to their round shape and be collected in the collection box 2, while the shriveled, bad or broken cowpea seeds and temporarily stored debris will accumulate on the screen 5 and will not fall. As the screen 5 vibrates, the shriveled, bad or broken cowpea seeds and temporarily stored debris will move to the guide plate 7 for material collection and processing.

[0054] In addition, the specific operation process of the debris cleaning mechanism is as follows: starting the drive motor 14 drives the active gear 15 and the outer gear ring 17 to rotate, and then drives the rotating cylinder 16 to rotate. When the rotating cylinder 16 rotates, it will drive the internal several groups of rotating shafts 21 and the linked bevel gears 22 to rotate horizontally. Because the linked bevel gear 22 is in a meshing state with the fixed bevel gear 20, the linked bevel gear 22 will move on the fixed bevel gear 20 when it rotates horizontally, thereby realizing the longitudinal rotation of the linked bevel gear 22, and the linked bevel gear 22 will drive the rotating shaft 21 to rotate longitudinally, and the rotating shaft 21 will drive the side rod 23, the conical rod 24 and the piercing member 25 to rotate longitudinally, and finally realize the synchronous lateral and longitudinal rotation of the side rod 23, the conical rod 24 and the piercing member 25, so that the piercing member 25 is fully in contact with the accumulated cowpea seeds, which is convenient for the piercing member 25 to penetrate the cowpea seeds. When the cam 35 is rotated horizontally, the two protrusions 35 at the end are driven to rotate horizontally. The protrusions 35 are located on the side of the sliding seat 34, so when the protrusions 35 rotate, they squeeze and push the side of the sliding seat 34, and then under the action of the movable opening 32 and the connecting plate 33, the sliding seat 34 will move linearly and bring the sliding plate 29 below to move linearly. The linear movement of the sliding plate 29 will drive the baffle 30 blocked in the discharge port 27 to move into the active cavity 28 and squeeze the damping spring 21. When the protrusion 35 rotates to disengage from the sliding seat 34, under the action of the damping spring 21, the sliding plate 29 and the baffle 30 are reset and moved, and the baffle 30 is blocked inside the discharge port 27 again, thereby realizing the intermittent discharge action of the material box 11 to avoid too much discharge and the screen 5 having no time to screen.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An efficient seed selection device for cowpea planting, characterized in that: The invention comprises a base frame (1), a collecting box (2) is fixed in the middle of the base frame (1), a support frame (3) is hinged on one side of the top of the base frame (1), an angle adjustment plate (36) is installed on the other side of the top of the base frame (1), the angle adjustment plate (36) is connected and fixed to the end of the support frame (3) by bolts, the top of the support frame (3) is connected to a support plate (4) by a damping spring (8), a screen (5) is provided in the middle of the support plate (4), and a support frame matching the screen (5) is fixed on the top of the support plate (4). The support frame (6) is provided with a vibration motor (9) at the rear side of the support frame (6), the top of the support frame (6) is respectively hingedly connected with a material box (11) and fixedly connected with an angle adjustment plate (10), the side of the material box (11) is fixedly connected with the angle adjustment plate (10) by bolts, the bottom of the material box (11) is provided with a discharge port (27) matched with the support frame (6), the inner wall of the material box (11) is provided with a shielding mechanism matched with the discharge port (27), and a debris cleaning mechanism is provided at the top center of the material box (11).

2. The high-efficiency seed selection device for cowpea planting according to claim 1, characterized in that: The debris cleaning mechanism comprises an installation opening provided at the top center of the material box (11), a cover plate (12) being installed in the installation opening, an inner cavity (13) being provided inside the cover plate (12), a driving motor (14) being fixed on one side of the inner cavity (13), a bottom output end of the driving motor (14) passing through the inner cavity (13) and being connected and fixed to a driving gear (15), a rotating cylinder (16) being rotatably connected on the other side of the inner cavity (13) and located at the center of the cover plate (12), an outer toothed ring (17) meshing with the driving gear (15) being fixed on the top outer surface of the rotating cylinder (16), the bottom end of the rotating cylinder (16) being movably passed through the inner cavity (11), and two protrusions (35) being symmetrically fixed on the bottom of the rotating cylinder (16).

3. The high-efficiency seed selection device for cowpea planting according to claim 2, characterized in that: The debris cleaning mechanism further comprises a fixed shaft (19) fixed inside the inner cavity (13) and a cavity (18) opened inside the rotating cylinder (16); the fixed shaft (19) and the rotating cylinder (16) have the same central axis; the end of the fixed shaft (19) movably penetrates into the cavity (18); a plurality of fixed bevel gears (20) are evenly fixed on the outer surface of the fixed shaft (19) on one side of the cavity (18); a plurality of groups of rotating shafts (21) are rotatably connected to the side wall of the cavity (18); a linkage bevel gear (22) meshing with the fixed bevel gear (20) is fixed to the end of the rotating shaft (21); the end of the rotating shaft (21) movably penetrates to the outside of the rotating cylinder (16) and is connected and fixed to a plurality of side rods (23).

4. The high-efficiency seed selection device for cowpea planting according to claim 3, characterized in that: A plurality of conical rods (24) are fixed on the outer surface of the side rod (23), a plurality of piercing members (25) are provided on the conical rod (24), a plurality of return blocks (26) are fixed at equal intervals on the piercing members (25), the return blocks (26) are truncated cone-shaped structures, and the diameter of the small bottom surface of the truncated cone-shaped structure is the same as the diameter of the piercing member (25).

5. The high-efficiency seed selection device for cowpea planting according to claim 4, characterized in that: The shielding mechanism comprises an active cavity (28) opened in the middle of the inner wall on both sides of the discharge port (27); a sliding plate (29) is slidably connected to the inside of the active cavity (28); a baffle (30) is fixed in the middle of one side of the sliding plate (29); the end of the baffle (30) passes through the discharge port (27); the baffles (30) on both sides block the discharge port (27); and a damping spring (31) is connected between the inner wall of the active cavity (28) and the sliding plate (29).

6. The high-efficiency seed selection device for cowpea planting according to claim 5, characterized in that: The shielding mechanism also includes a movable opening (32) opened at the top center of the movable cavity (28), a connecting plate (33) is slidably connected in the movable opening (32), and the connecting plate (33) is an L-shaped structure. One end of the connecting plate (33) is connected and fixed to the outer surface of the sliding plate (29), and the other end of the connecting plate (33) passes through the interior of the material box (11) and is connected and fixed to a sliding seat (34). The length of the sliding seat (34) is adapted to the rotation trajectory of the protrusion (35).

7. The high-efficiency seed selection device for cowpea planting according to claim 6, characterized in that: The support plate (4) and the support frame (3) are slidably connected via a sliding rod and a sliding sleeve, and the sliding rod and the sliding sleeve are respectively fixed on the support plate (4) and the support frame (3).

8. The high-efficiency seed selection device for cowpea planting according to claim 7, characterized in that: A through hole is provided in the middle of the support frame (3), and the screen (5) corresponds to the through hole.

9. The high-efficiency seed selection device for cowpea planting according to claim 8, characterized in that: A material guide plate (7) is provided on one side of the top of the support frame (3), and a material feed hopper is provided on the side of the material box (11).

10. A method for using a high-efficiency seed selection device for cowpea planting, characterized in that: Used for the efficient seed selection device for cowpea planting as claimed in claim 9, The steps include: Pour the cowpea seeds into the material box (11) through the feed hopper, and stir the cowpea seeds in the material box (11) through the debris cleaning mechanism. During the stirring, the debris cleaning mechanism pierces and grabs the bean shells, bean stalks and other debris mixed in the cowpea seeds, so as to separate the debris from the cowpea seeds; When the debris cleaning mechanism pierces and grabs the debris in the cowpea seeds, it will synchronously drive the shielding mechanism blocked in the discharge port (27) at the bottom of the material box (11) so that the discharge port (27) can be opened intermittently, thereby realizing the discharge action of the cowpea seeds; The cowpea seeds falling from the discharge port (27) will fall onto the screen (5) of the support frame (6). At the same time, the vibration motor (9) starts to drive the support plate (4) and the support frame (6) to vibrate, thereby giving the cowpea seeds accumulated on the screen (5) a force to vibrate and move forward, so that the cowpea seeds can move along the screen (5) to the guide plate (7). During the movement, a number of cowpea seeds will fall through the screen (5) due to their round shape and be collected in the collection box (2), while the shriveled, damaged or broken cowpea seeds and temporarily stored debris will accumulate on the screen (5) and will not fall. As the screen (5) vibrates, the shriveled, damaged or broken cowpea seeds and temporarily stored debris will move to the guide plate (7) for material collection and processing.

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