Graded screening device for American pennisetum seeds

Abstract

The utility model relates to the technical field of seed screening, and discloses an American pennisetum seed grading and screening device which comprises a screening machine, a grading and screening mechanism and a segmented conveying mechanism, a screening box is movably arranged at the top of the screening machine, and the grading and screening mechanism is arranged in the screening box; through a connecting plate and a discharging channel, unfiltered seeds can be conveniently guided into a guide cylinder through a feeding groove, a motor is matched to conveniently rotate an auger clockwise, the auger can conveniently drive the unfiltered seeds to be conveyed upwards, and meanwhile, a third screening plate is matched to conveniently convey and guide the seeds in a segmented mode; according to the seed screening device, seeds directly fall on the second screening plate through the third screening plate for secondary screening, the filtered seeds directly fall into the screening box from the second screening plate, and the filtered seeds are discharged from the first discharging plate through guiding of the second screening plate, so that the seeds are fully screened, and the screening effect is better.

Description

Technical Field

[0001] This utility model relates to the field of seed screening technology, and more specifically to a seed grading and screening device for American foxtail grass. Background Technology

[0002] Pennisetum is a perennial plant belonging to the genus Pennisetum in the family Poaceae. It has relatively thick fibrous roots, erect, tufted culms densely covered with soft hairs below the inflorescence, smooth leaf sheaths that are flattened laterally, and those on the upper part of the culm that are longer than the internodes; the ligule has cilia about 2.5 mm long; the leaf blades are linear with a long acuminate apex and warty hairs at the base; the panicles are erect. After the seeds are collected by the staff, they need to be screened, which requires the use of a seed grading and screening machine.

[0003] Chinese patent CN209406835U discloses a seed grading and screening device. By setting up a fixed block, a first lead screw, an L-shaped plate, a round block, and a square block, it solves the problem that the current common seed grading and screening devices are screening machines, which require disassembly and reassembly of the rollers every time they are used, making them inconvenient to use.

[0004] However, when screening seeds, the seeds are squeezed together when a large number of seeds are poured into the screening box. A small portion of the seeds are not filtered due to the compression. Because there is no mechanism for secondary filtration, unfiltered seeds and filtered seeds are directly exported from the first screening plate, resulting in poor seed screening effect. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a seed grading and screening device for American foxtail grass, which solves the problem in the background art that, due to the lack of a mechanism for secondary filtration of seeds, unfiltered seeds and filtered seeds are directly discharged from the first screening plate, resulting in poor seed screening effect.

[0006] This utility model provides the following technical solution: a seed grading and screening device for American foxtail grass, including a screening machine, a screening box movably mounted on the top of the screening machine, a grading and screening mechanism and a segmented conveying mechanism, the grading and screening mechanism being disposed inside the screening box, a guide component being disposed on the grading and screening mechanism, the segmented conveying mechanism being rotatably disposed inside the screening box, and the segmented conveying mechanism being located on one side of the grading and screening mechanism, and the grading and screening mechanism being connected to the segmented conveying mechanism through the guide component, a screening component being disposed at the bottom of the segmented conveying mechanism, and the segmented conveying mechanism being connected to the bottom of the grading and screening mechanism through the screening component, and a starting component being disposed on the top of the screening box, the output end of the starting component penetrating the inner wall of the screening box and being fixedly connected to one end of the segmented conveying mechanism.

[0007] Furthermore, the grading and screening mechanism includes a first screening plate and a second screening plate. The outer wall of the first screening plate is fixedly connected to the inner wall of the screening box, and there is a gap between one side of the first screening plate and one side of the inner wall of the screening box. The second screening plate is fixedly connected to the inner wall of the screening box near the lower part of the first screening plate. The width of the first screening plate is smaller than the width of the second screening plate. A first discharge plate communicating with the second screening plate is fixedly connected to one side of the screening box, and a second discharge plate communicating with the interior of the screening box is fixedly connected to the bottom of the screening box.

[0008] Furthermore, the guide includes a connecting plate, a support plate, a feeding channel, and a discharging channel. The support plate is fixedly connected inside the screening box, and one side of the support plate is fixedly connected to one side of the first screening plate. The bottom end of the support plate is fixedly connected to the top end of the second screening plate. The bottom of the support plate is provided with a discharging channel, and the top of the support plate is provided with a feeding channel.

[0009] Furthermore, the segmented conveying mechanism includes an auger, a guide cylinder is fixedly connected inside the screening box, and the guide cylinder is located in the cavity formed between the front side of the guide member and the inner wall of the screening box. A feed groove is opened at the bottom of the outer wall of the guide cylinder, and a discharge groove is opened at the top of the outer wall of the guide cylinder. The auger is rotatably connected to the inside of the guide cylinder, and the outer wall of the auger does not contact the inner wall of the guide cylinder. An installation groove communicating with the inside is opened at the bottom of the guide cylinder.

[0010] Furthermore, the screening component includes a third screening plate, the outer wall of which is fixedly connected to the mounting groove.

[0011] Furthermore, the starting component includes a motor, which is installed on the top of the screening box, and the motor output end passes through the inner wall of the screening box and the inner wall of the guide cylinder and is fixedly connected to one end of the auger.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] 1. This utility model, through a connecting plate and a discharge channel, facilitates the introduction of unfiltered seeds into the guide cylinder via the feed trough. Combined with a motor, it allows for convenient clockwise rotation of the auger, enabling the auger to carry the unfiltered seeds upwards. Simultaneously, the third screening plate facilitates segmented seed conveying and guidance, allowing the seeds to fall directly onto the second screening plate for secondary screening. Filtered seeds fall directly from the second screening plate into the screening box, while the filtered seeds are guided by the second screening plate and discharged from the first discharge plate. This comprehensive seed screening results in a better screening effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the first screening plate of this utility model;

[0016] Figure 3 This is a cross-sectional view of the screening box of this utility model;

[0017] Figure 4 This is a schematic diagram of the guide tube of this utility model;

[0018] Figure 5 This is an exploded view of the guide cylinder and auger of this utility model.

[0019] The attached figures are labeled as follows: 1. Screening machine; 2. Screening box; 3. First screening plate; 4. Connecting plate; 5. Support plate; 6. Second screening plate; 7. Feeding channel; 8. Motor; 9. Guide cylinder; 10. Feeding trough; 11. Discharge trough; 12. Screw conveyor; 13. Third screening plate; 14. First discharge plate; 15. Second discharge plate; 16. Discharge channel; 17. Mounting slot. Detailed Implementation

[0020] The present invention will be further described below with reference to specific embodiments. However, those skilled in the art should understand that the detailed description given here with reference to the accompanying drawings is for better explanation. The structure of the present invention may exceed the limited embodiments described herein. Some equivalent alternatives or common means will not be described in detail here, but they still fall within the protection scope of this application.

[0021] Appendix Figures 1-5 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-5 The present invention will be further described below.

[0022] See attached document Figures 1-5A seed grading and screening device for American foxtail grass includes a screening machine 1, a screening box 2 movably mounted on the top of the screening machine 1, a grading and screening mechanism, and a segmented conveying mechanism. The grading and screening mechanism is located inside the screening box 2 and is equipped with a guide. The segmented conveying mechanism is rotatably mounted inside the screening box 2 and is located to one side of the grading and screening mechanism. The grading and screening mechanism is connected to the segmented conveying mechanism via the guide. A screening element is located at the bottom of the segmented conveying mechanism and is connected to the bottom of the grading and screening mechanism via the screening element. A starting element is located on the top of the screening box 2, and the output end of the starting element passes through the screening box. 2. The inner wall is fixedly connected to one end of the segmented conveying mechanism. Through the grading and screening mechanism, it is convenient to screen most of the seeds. When a large number of seeds are poured into the screening box 2, the seeds are squeezed together. A small number of seeds are not filtered due to the squeezing. At this time, the seeds enter the segmented conveying mechanism through the guide. The starting component can drive the segmented conveying mechanism to rotate. The continuously rotating segmented conveying mechanism facilitates the segmentation of the continuously entering seeds. During the conveying process, the seeds fall back into the grading and screening mechanism for secondary screening due to the action of the screening component, so as to fully screen the seeds and make the screening effect better.

[0023] Specifically, the grading and screening mechanism includes a first screening plate 3 and a second screening plate 6. The outer wall of the first screening plate 3 is fixedly connected to the inner wall of the screening box 2, and there is a gap between one side of the first screening plate 3 and one side of the inner wall of the screening box 2. The second screening plate 6 is fixedly connected to the inner wall of the screening box 2 near the lower part of the first screening plate 3. The width of the first screening plate 3 is smaller than the width of the second screening plate 6. A first discharge plate 14 communicating with the second screening plate 6 is fixedly connected to one side of the screening box 2. A second discharge plate 15 communicating with the interior of the screening box 2 is fixedly connected to the bottom of the screening box 2. When the screening machine 1 is started, the screening machine 1 drives the screening box 2 to reciprocate. Thus, when the seeds enter the interior of the screening box 2, due to the first screening plate 3 and the second screening plate 6, most of the filtered seeds are directly guided into the bottom of the interior of the screening box 2 and discharged by the second discharge plate 15.

[0024] Specifically, the guide includes a connecting plate 4, a support plate 5, a feeding channel 7, and a discharging channel 16. The support plate 5 is fixedly connected inside the screening box 2, and one side of the support plate 5 is fixedly connected to one side of the first screening plate 3. The bottom end of the support plate 5 is fixedly connected to the top end of the second screening plate 6. The bottom of the support plate 5 is provided with a discharging channel 16, and the top of the support plate 5 is provided with a feeding channel 7. When the seeds are poured into the screening box 2, they are squeezed together. A small portion of the seeds are not filtered due to the squeezing. Through the conveying of the first screening plate 3, the small portion of the seeds are guided by the connecting plate 4, discharged through the discharging channel 16, and enter the segmented conveying mechanism.

[0025] Specifically, the segmented conveying mechanism includes an auger 12. A guide cylinder 9 is fixedly connected inside the screening box 2, and the guide cylinder 9 is located in the cavity formed between the front side of the guide member and the inner wall of the screening box 2. A feed chute 10 is opened at the bottom of the outer wall of the guide cylinder 9, and a discharge chute 11 is opened at the top of the outer wall of the guide cylinder 9. The auger 12 is rotatably connected to the inside of the guide cylinder 9, and the outer wall of the auger 12 does not contact the inner wall of the guide cylinder 9. An installation groove 17 communicating with the inside is opened at the bottom of the guide cylinder 9. When the starting member drives the auger 12 to rotate inside the guide cylinder 9, the auger 12 can transport the unfiltered seeds upward. Due to the continuous rotation of the auger 12 and the continuous entry of seeds, the auger 12 performs segmented processing on the seeds.

[0026] Specifically, the screening component includes a third screening plate 13, the outer wall of which is fixedly connected to the mounting groove 17. The mesh size of the third screening plate 13 is larger than that of the first screening plate 3 and the second screening plate 6. The first screening plate 3 and the second screening plate 6 have the same specifications, which makes it easy for seeds to fall directly onto the second screening plate 6 after passing through the third screening plate 13 for secondary screening.

[0027] Specifically, the starting component includes a motor 8, which is installed on the top of the screening box 2. The output end of the motor 8 passes through the inner wall of the screening box 2 and the inner wall of the guide cylinder 9 and is fixedly connected to one end of the auger 12. Starting the motor 8 causes the output end of the motor 8 to rotate the auger 12 clockwise, thereby enabling the auger 12 to rotate inside the guide cylinder 9, which facilitates the subsequent processing of seeds.

[0028] The working principle and usage process of this utility model are as follows: When in use, the screening machine 1 is started, causing it to drive the screening box 2 in a reciprocating motion. When seeds enter the screening box 2, the first screening plate 3 and the second screening plate 6 facilitate the direct introduction of most of the filtered seeds into the bottom of the screening box 2 and discharge them through the second discharge plate 15. Because a large number of seeds are poured into the screening box 2, they are compressed, and a small portion of the seeds are not filtered due to this compression. This small portion of seeds is guided by the connecting plate 4, exiting through the discharge channel 16 and entering the feed trough 10. From there, it is guided into the guide cylinder 9. The motor 8 is started, causing the output end of the motor 8 to rotate the auger 12 clockwise. This allows the auger 12 to rotate inside the guide cylinder 9, facilitating the auger 12's... The auger 12 continuously rotates and seeds continuously enter, thus processing the seeds in segments. At the same time, the third screening plate 13 facilitates the segmented conveying and guiding of the seeds, allowing them to fall directly onto the second screening plate 6 for secondary screening as they pass through the third screening plate 13. Filtered seeds fall directly from the second screening plate 6 into the screening box 2, while the filtered seeds are guided by the second screening plate 6 and discharged from the first discharge plate 14. This process thoroughly screens the seeds, resulting in better screening. If there are any remaining seeds inside the auger 12, they are conveyed into the guide cylinder 9 and introduced into the feed channel 7 from the discharge trough 11, and then re-enter the first screening plate 3 from the feed channel 7 for screening.

[0029] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A seed grading and screening device for American foxtail grass, comprising a screening machine (1), wherein a screening box (2) is movably disposed on the top of the screening machine (1), characterized in that: It also includes a grading and screening mechanism and a segmented conveying mechanism. The grading and screening mechanism is set inside the screening box (2). A guide is provided on the grading and screening mechanism. The segmented conveying mechanism is rotatably set inside the screening box (2). The segmented conveying mechanism is located on one side of the grading and screening mechanism. The grading and screening mechanism is connected to the segmented conveying mechanism through the guide. A screening component is provided at the bottom of the segmented conveying mechanism. The segmented conveying mechanism is connected to the bottom of the grading and screening mechanism through the screening component. A starter is provided at the top of the screening box (2). The output end of the starter penetrates the inner wall of the screening box (2) and is fixedly connected to one end of the segmented conveying mechanism.

2. The seed grading and screening device for American foxtail grass according to claim 1, characterized in that: The grading and screening mechanism includes a first screening plate (3) and a second screening plate (6). The outer wall of the first screening plate (3) is fixedly connected to the inner wall of the screening box (2), and there is a gap between one side of the first screening plate (3) and one side of the inner wall of the screening box (2). The second screening plate (6) is fixedly connected to the inner wall of the screening box (2) near the lower part of the first screening plate (3). The width of the first screening plate (3) is smaller than the width of the second screening plate (6). A first discharge plate (14) communicating with the second screening plate (6) is fixedly connected to one side of the screening box (2), and a second discharge plate (15) communicating with the inside of the screening box (2) is fixedly connected to the bottom of the screening box (2).

3. The American foxtail grass seed grading and screening device according to claim 2, characterized in that: The guide includes a connecting plate (4), a support plate (5), a feeding channel (7) and a discharging channel (16). The support plate (5) is fixedly connected to the inside of the screening box (2), and one side of the support plate (5) is fixedly connected to one side of the first screening plate (3). The bottom end of the support plate (5) is fixedly connected to the top end of the second screening plate (6). The bottom of the support plate (5) is provided with a discharging channel (16), and the top of the support plate (5) is provided with a feeding channel (7).

4. The American foxtail grass seed grading and screening device according to claim 1, characterized in that: The segmented conveying mechanism includes an auger (12), a guide cylinder (9) is fixedly connected inside the screening box (2), and the guide cylinder (9) is located in the cavity formed between the front side of the guide and the inner wall of the screening box (2). The bottom of the outer wall of the guide cylinder (9) is provided with a feed groove (10), and the top of the outer wall of the guide cylinder (9) is provided with a discharge groove (11). The auger (12) is rotatably connected to the inside of the guide cylinder (9), and the outer wall of the auger (12) does not contact the inner wall of the guide cylinder (9). The bottom of the guide cylinder (9) is provided with an installation groove (17) that communicates with the inside.

5. The American foxtail grass seed grading and screening device according to claim 4, characterized in that: The screening component includes a third screening plate (13), the outer wall of which is fixedly connected to the mounting groove (17).

6. The American foxtail grass seed grading and screening device according to claim 4, characterized in that: The starting component includes a motor (8), which is installed on the top of the screening box (2), and the output end of the motor (8) passes through the inner wall of the screening box (2) and the inner wall of the guide cylinder (9) and is fixedly connected to one end of the auger (12).

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