Sunflower seed screening device

Abstract

The sunflower seed screening device comprises a screening barrel and a screening box, the screening barrel is located above the screening box, and the screening barrel communicates with the screening box; a feeding assembly is arranged at the top of the screening barrel and is used for feeding sunflower seeds; a rotating shaft is further rotationally arranged in the screening barrel, a dispersing plate is fixedly arranged on the rotating shaft, and the dispersing plate is located below the feeding assembly; a fan is arranged on one side of the screening barrel and connected with the screening barrel through an air outlet pipe, so that the interior of the screening barrel is in a negative pressure state; a screening assembly is arranged in the screening box and used for screening sunflower seeds. According to the sunflower seed screening device, sunflower seeds enter the screening barrel from the feeding assembly, the dispersing plate is driven by the rotating shaft to rotate synchronously, the sunflower seeds fall on the dispersing plate and can be thrown to the periphery, and therefore the sunflower seeds evenly fall on the lower portion, and impurities can be fully screened out; and the screened sunflower seeds fall into the screening barrel, and the screening assembly further screens the sunflower seeds, so that the impurities are thoroughly removed.

Description

Technical Field

[0001] This invention relates to the field of screening device technology, and more particularly to a sunflower seed screening device. Background Technology

[0002] Sunflower seeds are the fruit of the sunflower. They consist of a pericarp (shell) and a seed. The seed comprises a seed coat, two cotyledons, and an embryo. Sunflower seeds have high medicinal and edible value and can be used in medicine and for oil extraction, thus they are widely cultivated. Because sunflower seeds are the fruit of the sunflower, harvesting them requires threshing them from the sunflower. However, during threshing, some impurities may remain in the seeds. Therefore, to facilitate further processing, the seeds need to be screened to remove these impurities. Currently, the most common screening method is air separation. The sunflower seeds are transported to a screening box, where a fan creates negative pressure, allowing impurities to be drawn out as the seeds fall. However, the seeds tend to fall in a concentrated manner, and some impurities remain, preventing complete removal and resulting in incomplete screening with some residue remaining in the seeds. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of the prior art by providing a sunflower seed screening device.

[0004] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0005] A sunflower seed screening device includes a screening bucket and a screening box, wherein the screening bucket is located above the screening box and the screening bucket and the screening box are connected.

[0006] A feeding assembly, located at the top of the screening barrel, is used for feeding sunflower seeds;

[0007] A rotating shaft is rotatably mounted inside the screening bin;

[0008] A dispersing plate is fixedly mounted on the rotating shaft, and the dispersing plate is located below the feeding assembly;

[0009] A fan is located on one side of the screening barrel and is connected to the screening barrel through an air outlet pipe, so that the screening barrel is in a negative pressure state.

[0010] A sieving component, located inside the sieving box, is used for sieving sunflower seeds.

[0011] Preferably, there are multiple dispersing plates, which are spaced apart in a vertical direction, and a guide plate is provided between two adjacent dispersing plates. The guide plate is fixedly installed inside the screening barrel.

[0012] Preferably, the dispersing plate has a conical structure and the guide plate has a funnel-shaped structure to facilitate the sliding of sunflower seeds.

[0013] Preferably, a filter cylinder is fixedly installed inside the screening barrel, and multiple filter holes are evenly opened on the wall of the filter cylinder. An air suction chamber is provided between the screening barrel and the filter cylinder, and the air suction chamber is connected to the air outlet pipe.

[0014] Preferably, a support rod is fixedly connected to the rotating shaft, and a scraper is fixedly connected to one end of the support rod away from the rotating shaft. The scraper contacts the wall of the filter cylinder and is used to scrape the wall of the filter cylinder.

[0015] Preferably, the feeding assembly includes a feeding pipe fixedly disposed at the upper end of the screening barrel, a connecting pipe disposed on the side wall of the feeding pipe, a hopper disposed at the end of the connecting pipe away from the feeding pipe, and the hopper and the feeding pipe being connected through the connecting pipe; a drive motor is fixedly disposed at the upper end of the feeding pipe, the drive motor being kinetically connected to the rotating shaft, and a spiral blade is fixedly disposed on the rotating shaft, the spiral blade being located inside the feeding pipe for conveying sunflower seeds.

[0016] Preferably, a fixing frame is fixedly provided at the upper end of the screening barrel, the fixing frame is located below the feed pipe, a baffle is slidably provided on the rotating shaft, and a compression spring is provided between the baffle and the fixing frame; a pressure rod is fixedly provided on the rotating shaft, a protrusion is fixedly provided on the upper end face of the baffle, and the lower end of the pressure rod can abut against the protrusion to drive the baffle to slide up and down.

[0017] Preferably, a limit rod is fixedly provided on the fixing frame, and the baffle is slidably disposed on the limit rod to prevent the baffle from rotating.

[0018] Preferably, a collection box is slidably disposed inside the screening box, a discharge port is provided on one side of the screening box, a screening plate is also disposed inside the screening box, the collection box is located below the screening plate, and the discharge port is located on one side of the screening plate.

[0019] Preferably, a fixing seat is fixedly provided on the side wall of the screening box, a vibration spring is provided between the fixing seat and the screening plate, and a vibration motor is fixedly provided on the screening plate.

[0020] The beneficial effects of adopting the above technical solution are as follows:

[0021] 1. In this invention, after sunflower seeds fall into the screening bin, the dispersing plate can fling the sunflower seeds to all sides during rotation, allowing the sunflower seeds to fall in a dispersed manner around the dispersing plate. This disperses the sunflower seeds during the fall, thereby absorbing the impurities inside the sunflower seeds and improving the screening effect. At the same time, some larger stones and impurities fall into the screening box with the sunflower seeds. After being screened by the screening plate, the stones and other impurities are removed, further improving the screening effect.

[0022] 2. In this invention, the upper part of the screening barrel is provided with a feeding component, and sunflower seeds can slide from the hopper into the feeding pipe. As the rotating shaft rotates, the pressure rod contacts the protrusion, causing the baffle to press down and the lower end of the feeding pipe to open. Sunflower seeds can fall from the feeding pipe into the screening barrel for screening. Therefore, the amount of sunflower seeds conveyed can be controlled to prevent a large number of sunflower seeds from falling and affecting the screening effect. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0024] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0025] Figure 3 yes Figure 2 Enlarged view of part A;

[0026] Figure 4 This is a three-dimensional schematic diagram of the dispersion plate of the present invention;

[0027] Figure 5 This is a three-dimensional schematic diagram of the guide plate of the present invention.

[0028] In the diagram: 1 is the screening barrel, 2 is the screening box, 3 is the rotating shaft, 4 is the dispersing plate, 5 is the fan, 6 is the air outlet pipe, 7 is the guide plate, 8 is the filter cylinder, 9 is the suction chamber, 10 is the support rod, 11 is the scraper, 12 is the feed pipe, 13 is the connecting pipe, 14 is the hopper, 15 is the drive motor, 16 is the spiral blade, 17 is the fixed frame, 18 is the baffle, 19 is the clamping spring, 20 is the pressure rod, 21 is the protrusion, 22 is the limit rod, 23 is the collection box, 24 is the discharge port, 25 is the screening plate, 26 is the fixed base, 27 is the vibration spring, and 28 is the vibration motor. Detailed Implementation

[0029] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0030] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0032] like Figures 1 to 3 As shown, a sunflower seed screening device includes a screening barrel 1 and a screening box 2. The screening barrel 1 is fixedly installed above the screening box 2, and the screening barrel 1 and the screening box 2 are connected so that sunflower seeds can fall from the screening barrel 1 into the screening box 2. A feeding component is provided at the top of the screening barrel 1 for feeding sunflower seeds. A rotating shaft 3 is rotatably installed inside the screening barrel 1, and a dispersing plate 4 is fixedly installed on the rotating shaft 3. The dispersing plate 4 is located below the feeding component and inside the screening barrel 1. The diameter of the dispersing plate 4 is smaller than the inner diameter of the screening barrel 1, and a gap is left between the outer circumference of the dispersing plate 4 and the screening barrel 1 for the sunflower seeds to fall. A fan 5 is provided on one side of the screening barrel 1, and the fan 5 is connected to the screening barrel 1 through an air outlet pipe 6. The fan 5 is an exhaust fan that can extract the air inside the screening barrel 1, so that the screening barrel 1 is in a negative pressure state. A screening component is provided inside the screening box 2 for screening out the heavier impurities in the sunflower seeds.

[0033] In this invention, when screening sunflower seeds, the seeds are fed into the screening barrel 1 via the feeding assembly. The seeds fall from the top of the screening barrel 1 into the screening box 2 below it. During the fall, the seeds land on the dispersing plate 4, which rotates under the drive of the rotating shaft 3. As the seeds rotate, they are flung around the dispersing plate 4 by centrifugal force and fall back down, allowing them to fall more evenly and dispersed. This allows lighter impurities such as dust and spore fragments mixed in with the seeds to be sucked away by the fan 5, thus completing the screening of impurities in the seeds. Larger impurities such as stones and clods of soil, which cannot be sucked away, fall into the screening box 2 with the seeds for further screening, making the seeds cleaner.

[0034] refer to Figures 2 to 5 As shown, in another embodiment of the present invention, multiple dispersing plates 4 are provided, and the multiple dispersing plates 4 are arranged at intervals along the vertical direction. A guide plate 7 is provided between two adjacent dispersing plates 4. The guide plate 7 is fixedly installed inside the screening barrel 1. The guide plate 7 has a circular ring structure. The outer circumferential surface of the guide plate 7 is fixedly connected to the inner wall of the screening barrel 1. A circular discharge hole is opened in the middle of the guide plate 7. The diameter of the discharge hole is smaller than the diameter of the dispersing plate 4. Therefore, after the sunflower seeds fall from the discharge hole in the middle of the guide plate 7, they can fall directly onto the dispersing plate 4 below. In this embodiment, after the sunflower seeds fall onto the dispersing plate 4, the sunflower seeds are flung around by the rotation of the dispersing plate 4. The sunflower seeds fall onto the guide plate 7 below the dispersing plate 4 around the dispersing plate 4. The sunflower seeds can also fall from the discharge hole in the middle of the guide plate 7 onto the dispersing plate 4 below for further dispersing and screening. After multiple screenings, the lighter impurities in the sunflower seeds can be completely screened out.

[0035] In another embodiment of the present invention, the dispersing plate 4 is a conical structure and the guide plate 7 is a funnel-shaped structure. Therefore, sunflower seeds can slide down the dispersing plate 4 to the surrounding area and also slide down the guide plate 7 to the center and fall down through the discharge hole, which facilitates the sliding of sunflower seeds and prevents sunflower seeds from remaining on the dispersing plate 4 or the guide plate 7.

[0036] In another embodiment of the present invention, a filter cylinder 8 is fixedly installed inside the screening barrel 1. The filter cylinder 8 has a cylindrical structure and is coaxially arranged with the screening barrel 1. Multiple filter holes are evenly opened on the cylinder wall of the filter cylinder 8. An air suction chamber 9 is provided between the screening barrel 1 and the filter cylinder 8, and the air suction chamber 9 is connected to the air outlet pipe 6. In this embodiment, after the fan 5 is started, the air inside the screening barrel 1 is extracted. During the extraction process, lighter impurities in the sunflower seeds can be extracted, thereby screening the sunflower seeds. Since the dispersing plate 4 can disperse the sunflower seeds relatively evenly around the screening barrel 1, in order to extract the air relatively evenly, a filter cylinder 8 can be fixedly installed inside the screening barrel 1. Therefore, the air inside the screening barrel 1 can flow evenly through the filter holes of the filter cylinder 8, so that the screening barrel 1 has suction in the circumference, thereby more thoroughly absorbing the impurities in the sunflower seeds.

[0037] In another embodiment of the present invention, a support rod 10 is fixedly connected to the rotating shaft 3. The support rod 10 is horizontally arranged, and a scraper 11 is fixedly connected to the end of the support rod 10 away from the rotating shaft 3. The scraper 11 is in contact with the wall of the filter cylinder 8. In this embodiment, during the screening of sunflower seeds, the sunflower seeds can be flung to the periphery of the dispersing plate 4. In order to avoid the sunflower seeds being adsorbed on the inner wall of the filter cylinder 8 and the impurities clogging the filter holes, the rotating shaft 3 drives the scraper 11 to rotate synchronously during the rotation. The scraper 11 is in contact with the wall of the filter cylinder 8. Therefore, the scraper 11 can scrape the wall of the filter cylinder 8 during the rotation, remove the sunflower seeds adsorbed on the wall of the filter cylinder, and clean the filter holes on the filter cylinder 8 to avoid clogging of the filter holes.

[0038] In another embodiment of the present invention, the feeding assembly includes a feeding pipe 12 fixedly disposed on the upper end of the screening barrel 1. The upper end of the feeding pipe 12 is a closed end, and the lower end of the feeding pipe 12 is connected to the interior of the screening barrel 1. A connecting pipe 13 is disposed on the side wall of the feeding pipe 12. The connecting pipe 13 is inclined. A hopper 14 is disposed at the end of the connecting pipe 13 away from the feeding pipe 12. The end of the connecting pipe 13 near the feeding pipe 12 is lower than the end near the hopper 14. The hopper 14 and the feeding pipe 12 are connected through the connecting pipe 13. A drive motor 15 is fixedly disposed on the upper end of the feeding pipe 12. The upper end of the rotating shaft 3 extends into the feed pipe 12 and is connected to the drive motor 15. A spiral blade 16 is fixedly installed on the rotating shaft 3. The spiral blade 16 is located inside the feed pipe 12 and is used for conveying sunflower seeds. In this embodiment, sunflower seeds are added to the hopper 14. The sunflower seeds flow into the feed pipe 12 along the connecting pipe 13 and finally fall into the screening bucket 1 along the feed pipe 12. During the conveying process, the spiral blade 16 rotates under the drive of the rotating shaft 3, which can stir the sunflower seeds and also convey them to prevent the sunflower seeds from accumulating and clogging.

[0039] In another embodiment of the present invention, a fixing frame 17 is fixedly installed at the upper end of the screening barrel 1, the fixing frame 17 is located below the feed pipe 12, a baffle 18 is slidably installed on the rotating shaft 3, the upper end face of the baffle 18 is a conical structure, and a compression spring 19 is installed between the baffle 18 and the fixing frame 17; a pressure rod 20 is fixedly installed on the rotating shaft 3, the pressure rod 20 is a "7" shaped structure, a protrusion 21 is fixedly installed on the upper end face of the baffle 18, and the lower end of the pressure rod 20 can abut against the protrusion 21 to drive the baffle 18 to slide up and down; in this embodiment, as the rotating shaft 3 rotates, it can drive the pressure rod 18 to slide up and down. The rod 20 rotates synchronously. When the pressure plate 20 contacts the protrusion 21, it can press the baffle 18 downward, causing the baffle 18 to slide downward. Under normal conditions, the upper end of the baffle 18 abuts against the lower end of the feed pipe 12. The baffle 18 is used to block the feed pipe 12, preventing sunflower seeds from falling into the screening bucket 1. When the pressure rod 20 contacts the protrusion 21 and presses the baffle 18 downward, the gap between the baffle 18 and the feed pipe 12 increases, allowing the sunflower seeds to fall normally into the screening bucket 1. This controls the falling speed and amount of sunflower seeds, preventing a large number of sunflower seeds from falling and hindering the screening of sunflower seeds.

[0040] It should be noted that, in order to facilitate contact and sliding with the pressure rod 20 and the protrusion 21, the upper end face of the protrusion 21 is an arc-shaped structure, the lower end of the pressure rod 20 is an arc-shaped structure, and the lower end of the pressure rod 20 is rotatably equipped with ball bearings. When the pressure rod 20 contacts the protrusion 21, the frictional resistance between the two is reduced, thereby reducing the rotational resistance of the rotating shaft 3.

[0041] In another embodiment, the lower end face of the pressure rod 20 is an inclined surface, and the upper end face of the protrusion 21 is also an inclined surface. The inclined surfaces of the pressure rod 20 and the protrusion 21 are arranged opposite to each other. When the pressure rod 20 and the protrusion 21 come into contact, the two inclined surfaces slide relative to each other, which also facilitates the relative sliding of the pressure rod 20 and the protrusion 21, so that the baffle 18 can be pressed and slid downward.

[0042] In another embodiment of the present invention, a limiting rod 22 is fixedly provided on the fixing frame 17, and the baffle 18 is slidably disposed on the limiting rod 22 to prevent the baffle 18 from rotating, so that the baffle 18 can only slide in the vertical direction.

[0043] In another embodiment of the present invention, a collection box 23 is slidably disposed inside the screening box 2, and a discharge port 24 is opened on one side of the screening box 2. A screening plate 25 is also disposed inside the screening box 2. The collection box 23 is located below the screening plate 25, and the discharge port 24 is located on one side of the screening plate 25. A fixing seat 26 is fixedly disposed on the side wall of the screening box 2, and a vibration spring 27 is disposed between the fixing seat 26 and the screening plate 25. A vibration motor 28 is fixedly disposed on the screening plate 25. In this embodiment, after being screened by the screening barrel 1, the lighter dust and petal fragments and other impurities in the sunflower seeds are screened clean. Some heavier impurities such as stones and protrusions are still mixed in with the sunflower seeds. In order to facilitate the removal of these impurities, the sunflower seeds can fall from the screening barrel 1 onto the screening plate 25 in the screening box 2. Driven by the vibration motor 28, the impurities can be screened to the collection box 23 below the screening plate 25 for centralized collection. The screened sunflower seeds can be discharged from the discharge port 24 for centralized collection.

[0044] It should be noted that, in order to facilitate the conveying of sunflower seeds, the screening plate 25 is set at an angle, and the discharge port 24 is located at the lowest point of the screening plate 25. During the vibration of the screening plate 25, the sunflower seeds can be quickly discharged from the discharge port 24, thereby improving the screening speed.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sunflower seed screening device, characterized in that, It includes a screening bucket (1) and a screening box (2), wherein the screening bucket (1) is located above the screening box (2), and the screening bucket (1) and the screening box (2) are connected. A feeding assembly is located at the top of the screening barrel (1) for feeding sunflower seeds; The rotating shaft (3) is rotatably positioned inside the screening bucket (1); A dispersing plate (4) is fixedly mounted on the rotating shaft (3), and the dispersing plate (4) is located below the feeding assembly; A fan (5) is located on one side of the screening barrel (1) and is connected to the screening barrel (1) through an air outlet pipe (6) to keep the screening barrel (1) under negative pressure. A sieving component is installed inside the sieving box (2) for sieving sunflower seeds.

2. The sunflower seed screening device according to claim 1, characterized in that, The dispersing plate (4) is provided in multiple ways, and the multiple dispersing plates (4) are arranged at intervals along the vertical direction. A guide plate (7) is provided between two adjacent dispersing plates (4), and the guide plate (7) is fixedly arranged inside the screening bucket (1).

3. The sunflower seed screening device according to claim 1, characterized in that, The dispersing plate (4) has a conical structure, and the guide plate (7) has a funnel-shaped structure, which facilitates the sliding of sunflower seeds.

4. The sunflower seed screening device according to claim 1, characterized in that, A filter cylinder (8) is fixedly installed inside the screening barrel (1). Multiple filter holes are evenly opened on the cylinder wall of the filter cylinder (8). An air suction chamber (9) is provided between the screening barrel (1) and the filter cylinder (8). The air suction chamber (9) is connected to the air outlet pipe (6).

5. A sunflower seed screening device according to claim 4, characterized in that, A support rod (10) is fixedly connected to the rotating shaft (3). A scraper (11) is fixedly connected to one end of the support rod (10) away from the rotating shaft (3). The scraper (11) contacts the wall of the filter cylinder (8) and is used to scrape the wall of the filter cylinder (8).

6. The sunflower seed screening device according to claim 1, characterized in that, The feeding assembly includes a feeding pipe (12) fixedly installed at the upper end of the screening barrel (1). A connecting pipe (13) is provided on the side wall of the feeding pipe (12). A hopper (14) is provided at the end of the connecting pipe (13) away from the feeding pipe (12). The hopper (14) and the feeding pipe (12) are connected through the connecting pipe (13). A drive motor (15) is fixedly installed at the upper end of the feeding pipe (12). The drive motor (15) is connected to the rotating shaft (3) through a transmission. A spiral blade (16) is fixedly installed on the rotating shaft (3). The spiral blade (16) is located inside the feeding pipe (12) and is used for conveying sunflower seeds.

7. The sunflower seed screening device according to claim 1, characterized in that, A fixed frame (17) is fixedly installed at the upper end of the screening barrel (1). The fixed frame (17) is located below the feed pipe (12). A baffle (18) is slidably installed on the rotating shaft (3). A compression spring (19) is installed between the baffle (18) and the fixed frame (17). A pressure rod (20) is fixedly installed on the rotating shaft (3). A protrusion (21) is fixedly installed on the upper end face of the baffle (18). The lower end of the pressure rod (20) can abut against the protrusion (21) to drive the baffle (18) to slide up and down.

8. A sunflower seed screening device according to claim 7, characterized in that, A limit rod (22) is fixedly installed on the fixed frame (17), and the baffle (18) is slidably installed on the limit rod (22) to prevent the baffle (18) from rotating.

9. A sunflower seed screening device according to claim 1, characterized in that, A collection box (23) is slidably arranged inside the screening box (2). A discharge port (24) is opened on one side of the screening box (2). A screening plate (25) is also arranged inside the screening box (2). The collection box (23) is located below the screening plate (25), and the discharge port (24) is located on one side of the screening plate (25).

10. A sunflower seed screening device according to claim 9, characterized in that, A fixed seat (26) is fixedly installed on the side wall of the screening box (2), a vibration spring (27) is provided between the fixed seat (26) and the screening plate (25), and a vibration motor (28) is fixedly installed on the screening plate (25).

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