Crop seed screening device

Abstract

The invention relates to the technical field of seed screening, in particular to a crop seed screening device which comprises a discharging pipe, a screening box and collecting holes located in the two sides of the screening box, a screening frame is arranged on the inner side of the screening box in a swinging mode, and a cavity is formed in the inner side of the screening frame and is in an inverted triangle shape; the electric telescopic rod is connected between the base and the inner wall of the screening box, the round pipe is installed in the middle of the lower end of the screening frame, the two ends of the rotating shaft penetrate through the round pipe and are fixed to the two sides of the screening box, the toothed plates are symmetrically installed on the upper portion of the base, and the incomplete gear is installed at the lower end of the round pipe. And the incomplete gear is meshed with the toothed plate. According to the seed screening device, full seeds and shriveled seeds can be rapidly separated, meanwhile, after the shriveled seeds are collected in a centralized mode, the shriveled seeds can be independently cut up, obtained shriveled seed residues are treated again to form animal feed or waste, and material recycling is achieved while seed screening is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of seed screening, and in particular to a crop seed screening device. Background Art

[0002] Seed screening is an important part of agricultural production, which is directly related to the yield, quality and economic benefits of crops. Traditional seed screening methods are often based on appearance characteristics or germination rate tests. Appearance characteristics may not accurately reflect the intrinsic vitality of seeds, while germination rate tests take a long time to get results.

[0003] There is a publication number CN108114903B, entitled a seed screening device, comprising a screening machine and a screening ball, wherein the screening machine comprises a screening cylinder, a stirring mechanism and a driver, wherein the screening cylinder is vertically arranged, the stirring mechanism comprises a stirring shaft and a spiral blade, the stirring shaft is rotatably connected to the screening cylinder, the spiral blade is mounted on the stirring shaft, and the spiral blade is screwed upward when the driver drives the rotating shaft to rotate; the screening ball is hollow inside, the screening ball is formed by two hemispheres buckled together, the screening ball is provided with a locking mechanism for locking the two hemispheres together and keeping them closed, a through hole is opened on the hemisphere according to the particle size of the seeds to be selected, an elastic valve is provided on the through hole, and the area of ​​the through hole covered by the valve does not exceed 1 / 2 of the cross section of the through hole; a discharge port is provided at the bottom of the screening cylinder, a screen is provided below the discharge port, and screen holes are provided on the screen.

[0004] While the above-mentioned prior art screens out large-grained seeds, shriveled seeds and grass seeds will gather inside the equipment. After a period of screening, the shriveled seeds and grass seeds will occupy the feed port of full seeds. Therefore, the shriveled seeds cannot be processed in time, resulting in a fixed amount of single screening. After screening, the equipment needs to be cleaned before screening can be carried out again. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a crop seed screening device.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A crop seed screening device is designed, including a feed pipe, a screening box, and collecting holes on both sides of the screening box: A screening frame is swingably arranged inside the screening box, leakage holes are arranged in an array on the upper part of the screening frame, a chamber is arranged inside the screening frame, and the chamber is in an inverted triangle, an output pipe extending outward is arranged at the bottom of the chamber, an inclined plate is arranged at the lower end of each collecting hole, and the position of the inclined plate matches the position of the screening frame, and an auxiliary screening component is arranged between the bottom of the screening frame and the bottom of the screening box; The auxiliary screening assembly includes a base, a tooth plate, an incomplete gear, a round tube, an electric telescopic rod and a rotating shaft; The electric telescopic rod is connected between the base and the inner wall of the screening box, the round tube is installed at the middle position of the lower end of the screening frame, the two ends of the rotating shaft pass through the round tube and are fixed on both sides of the screening box, the tooth plate is symmetrically installed on the upper part of the base, the incomplete gear is installed at the lower end of the round tube, and the incomplete gear and the tooth plate are meshed with each other.

[0007] Preferably, two through-type guide holes are symmetrically provided inside the base, and two guide columns are horizontally fixedly installed inside the screening box, and the guide columns are located inside the guide holes.

[0008] Preferably, a collecting bin is fixedly mounted on the inner side of the screening box, a material recovery assembly is arranged on the inner side of the collecting bin, and the material leaking from the output pipe enters the inner middle part of the collecting bin.

[0009] Preferably, the material recovery component includes a cutting component and a connecting component; The connecting assembly includes a connecting frame, a guide rail and a baffle; The guide rail is symmetrically opened on one side of the collecting bin, the baffle plate slides vertically on the inner side of the collecting bin, and the inner wall of the collecting bin and the baffle plate fit each other, and the two ends of the connecting frame are respectively connected between the baffle plate and the tooth plate.

[0010] Preferably, the cutting assembly comprises a push block, a square hole and a cutter; The push block is installed at the bottom of the baffle, the cutter is evenly installed in the middle of the collection bin, a square hole is opened in the middle of the square hole, and the push block is arranged in an arc shape on one side close to the cutter.

[0011] Preferably, a plurality of water tanks are provided at the bottom of the collecting bin on both sides of the cutter.

[0012] Preferably, a material forming assembly is provided at the bottom of the collecting bin, and the material forming assembly includes a support plate, an elastic column, a partition plate, a first forming hole, a second forming hole, a conical plate, a straight plate and a separation plate; The support plates are symmetrically installed on both sides of the square hole, two symmetrically arranged partitions are hinged at the bottom of the two support plates, a separation plate is connected at the middle position of the two support plates, a plurality of first forming holes are evenly opened on both sides of the separation plate, and an elastic column is connected between the partition plate and the partition plates on both sides; A straight plate is horizontally mounted on one side of the connecting frame, a second forming hole is opened on the side opposite to the separation plate, and a conical plate is symmetrically mounted on one side of the straight plate.

[0013] Preferably, when the conical plate and the partition are in contact with each other, the conical plate presses the partition downward to an inclined state.

[0014] Preferably, the separation plate is located below the square hole, and the upper end of the separation plate is set as a pointed end, and the materials falling from the square hole contact the separation plate and fall onto the partitions on both sides respectively.

[0015] Preferably, the first forming holes and the second forming holes have the same size, and the positions of the plurality of first forming holes and the second forming holes correspond one to one.

[0016] The present invention proposes a crop seed screening device, which has the beneficial effect that the crop seed screening device can quickly separate full seeds from shriveled seeds, and after the shriveled seeds are collected, they can be chopped separately, and the shriveled seed residues obtained are processed again to form animal feed or waste, thereby realizing seed screening and material recycling at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a crop seed screening device proposed by the present invention.

[0018] Figure 2 This is a schematic structural diagram of an auxiliary screening component of a crop seed screening device proposed by the present invention.

[0019] Figure 3 This is a schematic structural diagram of a material recovery component of a crop seed screening device proposed by the present invention.

[0020] Figure 4 This is a structural schematic diagram from another perspective of a material recovery component of a crop seed screening device proposed by the present invention.

[0021] Figure 5 This is a schematic structural diagram of a cutting assembly of a crop seed screening device proposed by the present invention.

[0022] Figure 6 This is a schematic structural diagram of a material forming component of a crop seed screening device proposed by the present invention.

[0023] Figure 7 This is a schematic diagram of the partial structure of a material forming component of a crop seed screening device proposed by the present invention.

[0024] Figure 8 This is a structural cross-sectional view of a screening frame of a crop seed screening device proposed by the present invention.

[0025] In the figure: feeding pipe 1, screening box 2, leakage hole 3, screening frame 4, collecting hole 5, inclined plate 6, guide column 7, base 8, tooth plate 9, incomplete gear 10, connecting frame 11, round tube 12, rotating shaft 13, guide hole 14, output pipe 15, collecting bin 16, push block 17, baffle 18, guide rail 19, square hole 20, material forming assembly 21, support plate 211, elastic column 212, partition 213, first forming hole 214, second forming hole 215, conical plate 216, straight plate 217, separation plate 218, cutter 22, water tank 23, chamber 24, electric telescopic rod 25. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] Example 1, reference Figure 1-4 A crop seed screening device comprises a feed pipe 1, a screening box 2 and collecting holes 5 located on both sides of the screening box 2: a screening frame 4 is swingably arranged on the inner side of the screening box 2, leakage holes 3 are arranged in an array on the upper part of the screening frame 4, a chamber 24 is arranged on the inner side of the screening frame 4, and the chamber 24 is an inverted triangle, an output pipe 15 extending outward is arranged at the bottom of the chamber 24, an inclined plate 6 is arranged at the lower end of the collecting holes 5, and the position of the inclined plate 6 matches the position of the screening frame 4, and an auxiliary screening component is arranged between the bottom of the screening frame 4 and the bottom of the screening box 2.

[0028] The auxiliary screening assembly includes a base 8, a tooth plate 9, an incomplete gear 10, a circular tube 12, an electric telescopic rod 25 and a rotating shaft 13. The electric telescopic rod 25 is connected between the base 8 and the inner wall of the screening box 2. The circular tube 12 is installed in the middle of the lower end of the screening frame 4. Both ends of the rotating shaft 13 pass through the circular tube 12 and are fixed on both sides of the screening box 2. The tooth plate 9 is symmetrically installed on the upper part of the base 8, the incomplete gear 10 is installed at the lower end of the circular tube 12, and the incomplete gear 10 and the tooth plate 9 are meshed with each other. Two through-type guide holes 14 are symmetrically opened inside the base 8, and two guide columns 7 are horizontally fixedly installed inside the screening box 2, and the guide columns 7 are located on the inner side of the guide holes 14.

[0029] Reference Figure 8, seeds are intermittently injected into the screening box 2 through the feeding pipe 1, and the injected seeds fall on the screening frame 4 inside the screening box 2. Plates are arranged on both sides of the screening frame 4, so that the seeds can be concentrated on the upper end of the screening frame 4. After the power of the electric telescopic rod 25 is started, the electric telescopic rod 25 reciprocates to extend and retract, and the electric telescopic rod 25 drives the base 8 and the tooth plate 9 to reciprocate at the bottom of the screening box 2. In this way, since the tooth plate 9 and the incomplete gear 10 are meshed with each other, the incomplete gear 10 realizes reciprocating deflection to both sides, and in the process of deflection, the incomplete gear 10 realizes reciprocating deflection to both sides. The screening frame 4 at the upper end of the screen frame 4 can swing left and right with the same amplitude. During the swinging of the screening frame 4 left and right, the seeds move at the upper end of the screening frame 4. During the movement, the full seeds will move on the upper end surface of the screening frame 4. Due to their large size, the full seeds will pass through the leakage hole 3 and be collected from the collecting holes 5 on both sides of the screening box 2, while the empty seeds and grass seeds will pass through the leakage hole 3 and enter the inner side of the chamber 24 as the screening frame 4 swings. In this way, as the feed pipe 1 continuously injects seeds into the upper end of the screening frame 4, uninterrupted seed screening can be achieved.

[0030] Example 2, reference Figure 4-5 The difference between this embodiment and embodiment 1 is that a collecting bin 16 is fixedly installed on the inner side of the screening box 2, a material recovery assembly is arranged on the inner side of the collecting bin 16, and the material leaked from the output pipe 15 enters the inner middle part of the collecting bin 16, the material recovery assembly includes a cutting assembly and a connecting assembly, the connecting assembly includes a connecting frame 11, a guide rail 19 and a baffle 18, the guide rail 19 is symmetrically opened on one side of the collecting bin 16, the baffle 18 slides vertically on the inner side of the collecting bin 16, and the inner wall of the collecting bin 16 and the baffle 18 are in contact with each other, and the two ends of the connecting frame 11 are respectively connected between the baffle 18 and the tooth plate 9.

[0031] The cutting assembly includes a push block 17, a square hole 20 and a cutter 22. The push block 17 is installed at the bottom of the baffle 18, and the cutter 22 is evenly installed in the middle of the collecting bin 16. A square hole 20 is opened in the middle of the square hole 20, and the push block 17 is arranged in an arc shape on one side close to the cutter 22.

[0032] A plurality of water tanks 23 are provided at the bottom of the collecting bin 16 on both sides of the cutter 22 .

[0033] The shriveled seeds and grass seeds that are screened out are rich in nutrients and can be recycled as waste or animal feed.

[0034] The deflated seeds and grass seeds that fall into the chamber 24 enter the inner side of the collecting bin 16 along the output pipe 15. A plurality of cutters 22 are arranged in the middle of the collecting bin 16. The baffle 18 on the inner side of the collecting bin 16 is connected to the tooth plate 9 through the connecting frame 11. Therefore, during the movement of the tooth plate 9, the baffle 18 will realize synchronous movement. When the seeds fall into the collecting bin 16 from the output pipe 15, the baffle 16 drives the push blocks 17 connected at the lower ends of both sides to move. Through the movement of the push blocks 17, the fallen seeds and grass seeds are pushed toward the cutters 22. The push block 17 squeezes the seeds out of the cutter 22, so that the seeds are subjected to the reaction force of the cutter 22 and are crushed. At the same time, a water trough 23 is provided at the bottom of the collecting bin 16. The water in the water trough 23 can soak the seeds and grass seeds. The soaked seeds and grass seeds will swell. On the one hand, the swollen seeds are easier to crush. On the other hand, the soaked seeds are prevented from scattering when in contact with the cutter 22 due to the interaction force between water molecules. The chopped seed fragments will fall from the square hole 20 below the cutter 22.

[0035] Example 3, reference Figure 6-7 The difference between this embodiment and Embodiment 1 and Embodiment 2 is that a material forming component 21 is provided at the bottom of the collecting bin 16, and the material forming component 21 includes a support plate 211, an elastic column 212, a partition 213, a first forming hole 214, a second forming hole 215, a conical plate 216, a straight plate 217 and a separation plate 218. The support plates 211 are symmetrically installed on both sides of the square hole 20, and two symmetrically arranged partitions 213 are hinged at the bottom of the two support plates 211. A separation plate 218 is connected to the middle position of the two support plates 211, and a plurality of first forming holes 214 are evenly opened on both sides of the separation plate 218. Elastic columns 212 are connected between the partition 213 and the partitions 213 on both sides.

[0036] A straight plate 217 is horizontally installed on one side of the connecting frame 11, and a second forming hole 215 is opened on the opposite side of the straight plate 217 and the separation plate 218. A conical plate 216 is symmetrically installed on one side of the straight plate 217. When the conical plate 216 and the partition 213 are in contact with each other, the conical plate 216 presses the partition 213 downward to an inclined state. The separation plate 218 is located below the square hole 20, and the upper end of the separation plate 218 is set as a pointed end. After the material falling from the square hole 20 contacts the separation plate 218, it falls onto the partitions 213 on both sides respectively. The first forming hole 214 and the second forming hole 215 have the same size, and the positions of the multiple first forming holes 214 and the second forming holes 215 correspond to each other one by one.

[0037] The shredded seeds and grass seed residues are difficult to transport and stacking will cause internal decay, affecting the quality of fertilizers and animal feeds.

[0038] To this end, the deflated seeds and grass seed residues that fall from the square hole 20 will evenly fall on the partitions 213 on both sides. At this time, the connecting frame 11 will drive the straight plate 217 to move toward the side of the partition 213 during the movement. When the straight plate 217 passes the upper end of the partition 213, the deflated seeds and grass seed residues on the upper end of the partition 213 are squeezed toward the separation plate 218. Since the separation plate 218 and the straight plate 217 are respectively provided with a first forming hole 214 and a second forming hole 215 on the opposite side, during the squeezing process, the deflated seeds and grass seed residues will form a spherical state between the first forming hole 214 and the second forming hole 215. When the straight plate 217 leaves the partition 213, the conical plates 216 on both sides of the straight plate 217 will contact with the partition 21 The two sides of the upper end of 3 are in contact with each other. During the return journey, the conical plate 216 has a downward squeezing effect on the partition 213. At this time, the partition 213 is tilted downward, and the prepared spherical fertilizer can slide along the partition 213 and be collected from the collecting port at the lower end of the screening box 2. When the conical plate 216 is separated from the partition 213, the partition 213 is restored to a horizontal state under the action of the elastic column 212. The initial state of the partition 213 is horizontal, and it can catch the fallen deflated seeds and grass seed residues to a greater extent. During the process, the partition 213 is squeezed and becomes inclined, which is convenient for material discharge. The spherical material shape can be convenient for transportation, and at the same time, the gap between each spherical material can be maintained to prevent the problem of corruption inside the material.

[0039] The working principle of the device is: Seeds are intermittently injected into the screening box 2 through the feeding pipe 1, and the injected seeds fall on the screening frame 4 inside the screening box 2. Plates are arranged on both sides of the screening frame 4, so that the seeds can be concentrated on the upper end of the screening frame 4. After the power of the electric telescopic rod 25 is started, the electric telescopic rod 25 reciprocates to extend and retract, and the electric telescopic rod 25 drives the base 8 and the tooth plate 9 to reciprocate at the bottom of the screening box 2. In this way, since the tooth plate 9 and the incomplete gear 10 are meshed with each other, the incomplete gear 10 realizes reciprocating deflection to both sides, and in the process of deflection, the incomplete gear 10 is reciprocated. The screening frame 4 at the upper end of the screen frame 4 can swing left and right with the same amplitude. During the swinging of the screening frame 4 left and right, the seeds move at the upper end of the screening frame 4. During the movement, the full seeds will move on the upper end surface of the screening frame 4. Due to their large size, the full seeds will pass through the leakage hole 3 and be collected from the collecting holes 5 on both sides of the screening box 2, while the empty seeds and grass seeds will pass through the leakage hole 3 and enter the inner side of the chamber 24 as the screening frame 4 swings. In this way, as the feed pipe 1 continuously injects seeds into the upper end of the screening frame 4, uninterrupted seed screening can be achieved.

[0040] The shriveled seeds and grass seeds that are screened out are rich in nutrients and can be recycled as waste or animal feed.

[0041] The deflated seeds and grass seeds that fall into the chamber 24 enter the inner side of the collecting bin 16 along the output pipe 15. A plurality of cutters 22 are arranged in the middle of the collecting bin 16. The baffle 18 on the inner side of the collecting bin 16 is connected to the tooth plate 9 through the connecting frame 11. Therefore, during the movement of the tooth plate 9, the baffle 18 will realize synchronous movement. When the seeds fall into the collecting bin 16 from the output pipe 15, the baffle 16 drives the push blocks 17 connected at the lower ends of both sides to move. Through the movement of the push blocks 17, the fallen seeds and grass seeds are pushed toward the cutters 22. The push block 17 squeezes the seeds out of the cutter 22, so that the seeds are subjected to the reaction force of the cutter 22 and are crushed. At the same time, a water trough 23 is provided at the bottom of the collecting bin 16. The water in the water trough 23 can soak the seeds and grass seeds. The soaked seeds and grass seeds will swell. On the one hand, the swollen seeds are easier to crush. On the other hand, the soaked seeds are prevented from scattering when in contact with the cutter 22 due to the interaction force between water molecules. The chopped seed fragments will fall from the square hole 20 below the cutter 22.

[0042] The shredded seeds and grass seed residues are difficult to transport and stacking will cause internal decay, affecting the quality of fertilizers and animal feeds.

[0043] To this end, the deflated seeds and grass seed residues that fall from the square hole 20 will evenly fall on the partitions 213 on both sides. At this time, the connecting frame 11 will drive the straight plate 217 to move toward the side of the partition 213 during the movement. When the straight plate 217 passes the upper end of the partition 213, the deflated seeds and grass seed residues on the upper end of the partition 213 are squeezed toward the separation plate 218. Since the separation plate 218 and the straight plate 217 are respectively provided with a first forming hole 214 and a second forming hole 215 on the opposite side, during the squeezing process, the deflated seeds and grass seed residues will form a spherical state between the first forming hole 214 and the second forming hole 215. When the straight plate 217 leaves the partition 213, the conical plates 216 on both sides of the straight plate 217 will contact with the partition 21 The two sides of the upper end of 3 are in contact with each other. During the return journey, the conical plate 216 has a downward squeezing effect on the partition 213. At this time, the partition 213 is tilted downward, and the prepared spherical fertilizer can slide along the partition 213 and be collected from the collecting port at the lower end of the screening box 2. When the conical plate 216 is separated from the partition 213, the partition 213 is restored to a horizontal state under the action of the elastic column 212. The initial state of the partition 213 is horizontal, and it can catch the fallen deflated seeds and grass seed residues to a greater extent. During the process, the partition 213 is squeezed and becomes inclined, which is convenient for material discharge. The spherical material shape can be convenient for transportation, and at the same time, the gap between each spherical material can be maintained to prevent the problem of corruption inside the material.

[0044] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A crop seed screening device, comprising a feed pipe (1), a screening box (2), and collecting holes (5) located on both sides of the screening box (2), characterized in that: A screening frame (4) is swingably disposed inside the screening box (2), leakage holes (3) are arranged in an array on the upper part of the screening frame (4), a chamber (24) is disposed inside the screening frame (4), and the chamber (24) is in the shape of an inverted triangle, an output pipe (15) extending outward is disposed at the bottom of the chamber (24), an inclined plate (6) is disposed at the lower end of each of the collecting holes (5), and the position of the inclined plate (6) matches the position of the screening frame (4), and an auxiliary screening component is disposed between the bottom of the screening frame (4) and the bottom of the screening box (2); The auxiliary screening assembly comprises a base (8), a tooth plate (9), an incomplete gear (10), a round tube (12), an electric telescopic rod (25) and a rotating shaft (13); The electric telescopic rod (25) is connected between the base (8) and the inner wall of the screening box (2); the circular tube (12) is installed at the middle position of the lower end of the screening frame (4); both ends of the rotating shaft (13) pass through the circular tube (12) and are fixed to both sides of the screening box (2); the tooth plate (9) is symmetrically installed on the upper part of the base (8); the incomplete gear (10) is installed at the lower end of the circular tube (12), and the incomplete gear (10) and the tooth plate (9) are meshed with each other.

2. The crop seed screening device according to claim 1, characterized in that: Two through-type guide holes (14) are symmetrically provided inside the base (8), and two guide columns (7) are horizontally fixedly installed inside the screening box (2), and the guide columns (7) are located on the inner sides of the guide holes (14).

3. The crop seed screening device according to claim 2, characterized in that: A collecting bin (16) is fixedly mounted on the inner side of the screening box (2), a material recovery assembly is arranged on the inner side of the collecting bin (16), and the material leaking out of the output pipe (15) enters the inner middle part of the collecting bin (16).

4. The crop seed screening device according to claim 3, characterized in that: The material recovery component includes a cutting component and a connecting component; The connection assembly comprises a connection frame (11), a guide rail (19) and a baffle (18); The guide rail (19) is symmetrically opened on one side of the collecting bin (16); the baffle (18) slides vertically on the inner side of the collecting bin (16); the inner wall of the collecting bin (16) and the baffle (18) are in contact with each other; and the two ends of the connecting frame (11) are respectively connected between the baffle (18) and the tooth plate (9).

5. The crop seed screening device according to claim 4, characterized in that: The cutting assembly comprises a push block (17), a square hole (20) and a cutting knife (22); The push block (17) is mounted on the bottom of the baffle (18), the cutter (22) is evenly mounted in the middle of the collection bin (16), a square hole (20) is opened in the middle of the square hole (20), and the push block (17) is arranged in an arc shape on one side close to the cutter (22).

6. The crop seed screening device according to claim 5, characterized in that: A plurality of water tanks (23) are provided at the bottom of the collecting bin (16) on both sides of the cutter (22).

7. The crop seed screening device according to claim 6, characterized in that: A material forming assembly (21) is provided at the bottom of the collecting bin (16), and the material forming assembly (21) comprises a support plate (211), an elastic column (212), a partition plate (213), a first forming hole (214), a second forming hole (215), a conical plate (216), a straight plate (217), and a separation plate (218); The support plates (211) are symmetrically mounted on both sides of the square hole (20); two symmetrically arranged partition plates (213) are hinged at the bottom of the two support plates (211); a separation plate (218) is connected to the middle of the two support plates (211); a plurality of first forming holes (214) are evenly formed on both sides of the separation plate (218); and elastic columns (212) are connected between the partition plates (213) and the partition plates (213) on both sides; A straight plate (217) is horizontally mounted on one side of the connecting frame (11), a second forming hole (215) is provided on a side of the straight plate (217) opposite to the separation plate (218), and a conical plate (216) is symmetrically mounted on one side of the straight plate (217).

8. The crop seed screening device according to claim 7, characterized in that: When the conical plate (216) and the partition plate (213) are in contact with each other, the conical plate (216) presses the partition plate (213) downward to an inclined state.

9. The crop seed screening device according to claim 8, characterized in that: When the separation plate (218) is located below the square hole (20) and the upper end of the separation plate (218) is configured as a pointed end, the material falling from the square hole (20) contacts the separation plate (218) and then falls onto the partitions (213) on both sides.

10. The crop seed screening device according to claim 9, characterized in that: The first forming holes (214) and the second forming holes (215) have the same size, and the positions of the plurality of first forming holes (214) and the second forming holes (215) correspond one to one.

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