A lotus seed screening device

Abstract

This utility model relates to the field of lotus seed screening technology and discloses a lotus seed screening device, including a fixed cylinder and a screening cylinder. The screening cylinder is disposed inside the fixed cylinder, and a toothed ring is fixed in the middle of the screening cylinder. A rotating gear driven by a servo motor is meshed on the toothed ring. Screening holes one and two are respectively opened on the front and rear sides of the inner wall of the screening cylinder. An electric air pump is installed on the side wall of the fixed cylinder, and the output port of the electric air pump is connected to an air supply pipe. This application can facilitate the screening of lotus seeds by rotation. Qualified seeds are directly discharged from the lower part of one side of the screening cylinder, and unqualified seeds fall into the fixed cylinder and are directly discharged from the discharge port, thereby forming a continuous screening effect. The device can avoid downtime during the screening process and effectively improve the screening efficiency of the screening device.

Description

Technical Field

[0001] This utility model relates to the field of lotus seed screening technology, specifically a lotus seed screening device. Background Technology

[0002] Lotus seeds typically mature within the fruit of the lotus flower after it has flowered. The seeds are usually oval-shaped, with a hard outer shell, and contain a single, round seed inside. To ensure higher overall quality, a screening device is typically used to separate larger seeds, guaranteeing the quality of the lotus flowers that develop after sowing.

[0003] As stated in the published Chinese patent CN222817293U, a lotus seed screening device includes: "a base, a screening box, and a screening mechanism; the screening mechanism includes a screening component, a telescopic cylinder, and a fixing component. The screening component includes a support plate, a first collection box, and screening pieces. A limiting component is provided on the support plate; a connecting component is provided on the support plate; the screening mechanism also includes a second collection box movably disposed on the bottom inner side of the screening box. Through the screening box and screening mechanism, several sets of screening pieces can screen lotus seeds. The telescopic cylinder can drive the screening pieces to move up and down, thereby improving the screening efficiency of the screening pieces. The first collection box can collect impurities and waste seeds, and the second collection box can collect plump lotus seeds. No manual cleaning is required, which improves the screening efficiency of the device. The second limiting plate and the limiting block cooperate to disassemble and maintain the first collection box."

[0004] Through a search of the aforementioned patented technologies and by combining them with the specific circumstances of screening lotus seeds using current technologies, we found that this type of technology still has certain shortcomings:

[0005] In the aforementioned prior art, when screening lotus seeds, on the one hand, several collection boxes are used to collect qualified and unqualified seeds respectively. When the collection boxes are full of seeds, the machine needs to be stopped and the seeds in the collection boxes cleaned before it can be used again, which will reduce the seed screening efficiency. On the other hand, since lotus seeds are of different sizes, some lotus seeds that are about the same size as the mesh are easily stuck in the mesh of the screening device during the fall, which will cause the mesh to be blocked and is not conducive to subsequent seed screening.

[0006] Therefore, in response to the technical problems mentioned above in the existing technology, we have designed a lotus seed screening device with better screening effect. Utility Model Content

[0007] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a lotus seed screening device, comprising a fixed cylinder and a screening cylinder, wherein the screening cylinder is disposed inside the fixed cylinder, a toothed ring is fixedly provided in the middle of the screening cylinder, and a rotating gear driven by a servo motor meshes on the toothed ring; a screening hole one and a screening hole two are respectively opened on the front and rear sides of the inner wall of the screening cylinder; an electric air pump is installed on the side wall of the fixed cylinder, and an air delivery pipe is connected to the output port of the electric air pump. The air delivery pipe is fixedly inserted through the inner cavity of the fixed cylinder and connected to an air frame. The interior of the air frame is a hollow structure, and an air nozzle is connected to one side of the air frame.

[0009] As a further embodiment of this utility model: multiple screening holes are evenly provided on the front side of the inner wall of the screening cylinder, and multiple screening holes are evenly provided on the rear side of the inner wall of the screening cylinder. The diameter of the screening holes is smaller than that of the screening holes. A blank area is left between the multiple screening holes and the multiple screening holes, and at the position corresponding to the toothed ring.

[0010] As a further embodiment of this utility model: multiple air nozzles are equidistantly connected on both the front and rear sides of the air frame, and a blank area is left in the middle of the air frame side to facilitate the passage of the toothed ring. The multiple air nozzles on the front and rear sides of the air frame side correspond to multiple screening holes one and multiple screening holes two, respectively.

[0011] As a further embodiment of this utility model: the servo motor is mounted on the top of the fixed cylinder, and the top of the fixed cylinder has an opening for easy insertion and rotation of the rotating gear, one side of which is connected to the power output shaft of the servo motor.

[0012] As a further embodiment of this utility model: both sides of the inner wall of the fixed cylinder are fixed with circular limiting rings, the inner side of the limiting ring is provided with a groove, and a roller is rotatably connected in the groove in an annular shape at equal intervals. The outer wall of the screening cylinder is provided with a rolling groove at a position corresponding to the roller, and the rolling surface of the roller is placed in the rolling groove. A retaining ring is fixed on the outer wall of the screening cylinder at a position on both sides of each limiting ring.

[0013] As a further embodiment of this utility model, a discharge port is provided on one side of the bottom wall of the fixed cylinder.

[0014] As a further embodiment of this utility model, it also includes a cylinder and a support plate. The top of the power output shaft of the cylinder is rotatably connected to the bottom of the fixed cylinder. A rotating rod is rotatably connected to the support plate. The end of the rotating rod away from the support plate is fixedly connected to the fixed cylinder. The cylinder is located on one side of the bottom of the fixed cylinder. There are two support plates located on the other side of the fixed cylinder. The fixed cylinder is located between the two support plates. The fixed cylinder is inclined by the support of the cylinder and the two support plates.

[0015] As a further embodiment of this utility model: the length of the screening cylinder is the same as the length of the fixed cylinder, and the inner bottom wall of the fixed cylinder has a smooth mirror surface structure and a gap is left between it and the toothed ring.

[0016] As a further embodiment of this utility model: the front and rear sides of the top of the screening cylinder are fixed with levers at equal longitudinal distances.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] I. In this application, through the design of a fixed cylinder, a screening cylinder, a screening hole one, a screening hole two, and a servo motor, lotus seeds can be conveniently screened by rotation. Qualified seeds are discharged directly from the lower part of one side of the screening cylinder, while unqualified seeds fall into the fixed cylinder and are discharged directly from the outlet, thereby forming a continuous screening effect. During the screening process, the device can avoid downtime and effectively improve the screening efficiency of the screening device.

[0019] Second, in this application, through the designed electric air pump, air frame and air nozzle, since the sides of screening hole one and screening hole two are respectively equipped with air nozzles, the airflow sprayed from the air nozzles can blow out the lotus seeds stuck in screening hole one or screening hole two, which can always maintain the unobstructed flow of screening hole one and screening hole two, avoid the lotus seeds getting stuck in the holes and affecting the subsequent seed screening, and help ensure the normal progress of lotus seed screening operation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall side sectional structure of this utility model;

[0021] Figure 2 This is a half-sectional three-dimensional structural diagram of the screening cylinder of this utility model;

[0022] Figure 3 This is a utility model Figure 2 Enlarged structural diagram at point A in the diagram;

[0023] Figure 4 This is a front sectional view of the structure of this utility model;

[0024] Figure 5 This is a three-dimensional structural diagram of the air frame of this utility model;

[0025] Figure 6 This is a front view structural diagram of the roller of this utility model;

[0026] Figure 7 This is a rear view structural diagram of the fixed cylinder of this utility model.

[0027] The reference numerals and names in the figure are as follows:

[0028] 1. Fixed cylinder; 2. Screening cylinder; 201. Actuating rod; 3. Screening hole one; 4. Screening hole two; 5. Gear ring; 6. Movable port; 7. Discharge port; 8. Servo motor; 9. Rotating gear; 10. Limiting ring; 11. Roller; 12. Retaining ring; 13. Electric air pump; 14. Air frame; 1401. Air nozzle; 15. Cylinder; 16. Support plate; 1601. Rotating rod. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figure 1-7 A lotus seed screening device includes a fixed cylinder 1 and a screening cylinder 2. A discharge port 7 is provided on one side of the bottom wall of the fixed cylinder 1 for discharging unqualified lotus seeds. The screening cylinder 2 is located inside the fixed cylinder 1. A toothed ring 5 is fixed in the middle of the screening cylinder 2. A rotating gear 9 driven by a servo motor 8 meshes on the toothed ring 5. Screening holes 3 and 4 are respectively provided on the front and rear sides of the inner wall of the screening cylinder 2. An electric air pump 13 is installed on the side wall of the fixed cylinder 1. An air supply pipe is connected to the output port of the electric air pump 13. The air supply pipe is fixed through the inner cavity of the fixed cylinder 1 and connected to an air frame 14. The air frame 14 has a hollow structure inside, and an air nozzle 1401 is connected to one side of the air frame 14.

[0031] Please see Figure 1 , Figure 2 and Figure 4 In this embodiment, multiple screening holes 3 are evenly provided on the front side of the inner wall of the screening cylinder 2, and multiple screening holes 4 are evenly provided on the rear side of the inner wall of the screening cylinder 2. The diameter of screening holes 3 is smaller than the diameter of screening holes 4, and a blank area is left between the multiple screening holes 3 and the multiple screening holes 4 and at the position corresponding to the toothed ring 5.

[0032] Specifically, the diameter of screening hole 3 is smaller than that of screening hole 4. Screening hole 3 can directly screen small, unqualified seeds, allowing them to fall directly. Lotus seeds with a diameter larger than screening hole 3 remain in screening cylinder 2. Screening hole 4 can screen seeds that are larger than the small seeds again, allowing seeds that are relatively larger than screening hole 3 to fall through screening hole 4. The seeds flowing down from screening cylinder 2 at this point are the large, qualified seeds. The blank area between multiple screening holes 3 and multiple screening holes 4 is to prevent the seeds from being blocked by the toothed ring 5 if holes are made there.

[0033] Please see Figure 4 and Figure 5 In this embodiment, multiple jet nozzles 1401 are equidistantly connected on both the front and rear sides of the air frame 14, and a blank area is left in the middle of the side of the air frame 14 to facilitate the passage of the toothed ring 5. The multiple jet nozzles 1401 on the front and rear sides of the air frame 14 correspond to multiple screening holes 3 and multiple screening holes 4, respectively.

[0034] Specifically, when the electric air pump 13 is started, it delivers airflow to the air frame 14. Since the air frame 14 is hollow, it can easily gather and concentrate the airflow, which can then enter multiple air nozzles 1401. Since the sides of the screening holes 1-3 and 2-4 are equipped with air nozzles 1401, the airflow ejected from the air nozzles 1401 can blow out the lotus seeds stuck in the screening holes 1-3 and 2-4, thus preventing blockage inside the screening holes 1-3 and 2-4.

[0035] Please see Figure 1 , Figure 2 and Figure 4 In this embodiment, the servo motor 8 is mounted on the top of the fixed cylinder 1. The top of the fixed cylinder 1 has an opening 6 for easy insertion and rotation of the rotating gear 9. One side of the rotating gear 9 is connected to the power output shaft of the servo motor 8.

[0036] Specifically, after the servo motor 8 is started, it can drive the rotating gear 9 to rotate through its power output shaft, thereby rotating in the movable port 6 and driving the meshing gear ring 5 to rotate, thereby driving the screening cylinder 2 to rotate and drive the lotus seeds inside to rotate and screen.

[0037] Please see Figure 1 , Figure 2 , Figure 3 and Figure 6In this embodiment, circular limiting rings 10 are fixed on both sides of the inner wall of the fixed cylinder 1. The inner side of the limiting ring 10 is provided with a groove, and a roller 11 is rotatably connected in the groove in an annular shape. A rolling groove is provided on the outer wall of the screening cylinder 2 at a position corresponding to the roller 11. The rolling surface of the roller 11 is placed in the rolling groove. A retaining ring 12 is fixed on the outer wall of the screening cylinder 2 at a position on both sides of each limiting ring 10.

[0038] Specifically, when the screening cylinder 2 rotates inside the fixed cylinder 1, the screening cylinder 2 and the roller 11 roll together, making the rotation of the screening cylinder 2 smoother. The retaining ring 12, which is designed in conjunction with the roller 11, can limit the position of the screening cylinder 2 and ensure the stability of the screening cylinder 2 during rotation.

[0039] Please see Figure 1 and Figure 6 In this embodiment, a cylinder 15 and a support plate 16 are also included. The top of the power output shaft of the cylinder 15 is rotatably connected to the bottom of the fixed cylinder 1. A rotating rod 1601 is rotatably connected to the support plate 16. The end of the rotating rod 1601 away from the support plate 16 is fixedly connected to the fixed cylinder 1. The cylinder 15 is located on one side of the bottom of the fixed cylinder 1. There are two support plates 16 located on the other side of the fixed cylinder 1. The fixed cylinder 1 is located between the two support plates 16. The fixed cylinder 1 is inclined by the support of the cylinder 15 and the two support plates 16.

[0040] Specifically, by activating cylinder 15, the extension or retraction of its power output shaft can be used to adjust the angle of the entire fixed cylinder 1, thereby changing the tilt angle of the screening cylinder 2 and adjusting the flow speed of lotus seeds inside the screening cylinder 2. The specific angle can be determined according to the actual situation. Meanwhile, the support plate 16 provides support and stability to the other side of the screening cylinder 2, ensuring the overall stability of the screening cylinder 2.

[0041] Please see Figure 1 , Figure 2 and Figure 4 In this embodiment, the length of the screening cylinder 2 is the same as the length of the fixed cylinder 1. The inner bottom wall of the fixed cylinder 1 is a smooth mirror structure and there is a gap between it and the toothed ring 5. The front and rear sides of the top of the screening cylinder 2 are fixed with a lever 201 at equal distances along the longitudinal direction.

[0042] Specifically, the inner bottom wall of the fixed cylinder 1 has a smooth mirror surface structure, which facilitates the sliding of lotus seeds. There is a gap between the inner bottom wall of the fixed cylinder 1 and the toothed ring 5, which facilitates the passage of lotus seeds. When the screening cylinder 2 rotates, it can drive the agitator 201 to rotate, thereby agitating the lotus seeds that fall on the inner bottom wall of the fixed cylinder 1, thus accelerating the discharge speed of the lotus seeds.

[0043] In use, firstly, a collection frame for collecting unqualified seeds can be placed at the bottom of the discharge port 7, and a collection frame for collecting qualified seeds can be placed at the discharge position of the screening cylinder 2. Start the servo motor 8. The power output shaft of the servo motor 8 drives the rotating gear 9 to rotate, thereby using the rotation of the rotating gear 9 to drive the screening cylinder 2 that meshes with it to rotate. The lotus seeds to be screened are put in from the high position (inlet) of the screening cylinder 2. The lotus seeds are screened by the rotation of the screening cylinder 2. The unqualified seeds fall from the first screening hole 3. When the lotus seeds come to the second screening hole 4, the lotus seeds are screened a second time, thereby screening out the unqualified lotus seeds again. The seeds falling from the first screening hole 3 and the second screening hole 4 can fall on the inner bottom wall of the fixed cylinder 1 and be discharged from the discharge port 7 by the tilting action of the fixed cylinder 1 and fall into the collection frame for collecting unqualified seeds. The qualified seeds are discharged from the low position of the screening cylinder 2 and fall into the collection frame for collecting qualified seeds.

[0044] When lotus seeds are screened by screening cylinder 2, they may get stuck in screening hole 3 or screening hole 4. During the screening process, the electric air pump 13 is activated, and the airflow is delivered to the air nozzle 1401. The airflow can blow out the lotus seeds stuck in screening hole 3 or screening hole 4, thereby avoiding the blockage of screening hole 3 or screening hole 4 and affecting the subsequent screening of seeds.

[0045] It should be noted that collection frames can be placed at the bottom of the discharge port 7 and at the discharge position of the screening cylinder 2 to collect qualified and unqualified seeds separately, so as to achieve continuous collection of lotus seeds without stopping the machine. The collection frame is a known technology, so it is not illustrated or explained in detail. When a certain number of lotus seeds are collected in the collection frame, the staff can directly use a new collection frame to intercept and collect the lotus seeds discharged from the discharge port 7 or the screening cylinder 2, and take away the collection frame containing the lotus seeds.

[0046] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A lotus seed screening device, comprising a fixed cylinder (1) and a screening cylinder (2), characterized in that, The screening cylinder (2) is located inside the fixed cylinder (1). A toothed ring (5) is fixed in the middle of the screening cylinder (2). A rotating gear (9) driven by a servo motor (8) meshes on the toothed ring (5). Screening holes one (3) and screening holes two (4) are respectively opened on the front and rear sides of the inner wall of the screening cylinder (2). An electric air pump (13) is installed on the side wall of the fixed cylinder (1). The output port of the electric air pump (13) is connected to an air delivery pipe. The air delivery pipe is fixed through the inner cavity of the fixed cylinder (1) and connected to an air frame (14). The interior of the air frame (14) is a hollow structure, and one side of the air frame (14) is connected to an air nozzle (1401).

2. The lotus seed screening device according to claim 1, characterized in that, Multiple screening holes (3) are evenly provided on the front side of the inner wall of the screening cylinder (2), and multiple screening holes (4) are evenly provided on the rear side of the inner wall of the screening cylinder (2). The diameter of the screening hole (3) is smaller than that of the screening hole (4), and there is a blank area between the multiple screening holes (3) and the multiple screening holes (4) and the position corresponding to the toothed ring (5).

3. The lotus seed screening device according to claim 1, characterized in that, The jet nozzles (1401) are connected at equal intervals on both the front and rear sides of the air frame (14), and a blank area is left in the middle of the side of the air frame (14) to facilitate the passage of the toothed ring (5). The multiple jet nozzles (1401) on the front and rear sides of the air frame (14) correspond to multiple screening holes one (3) and multiple screening holes two (4) respectively.

4. The lotus seed screening device according to claim 1, characterized in that, The servo motor (8) is mounted on the top of the fixed cylinder (1). The top of the fixed cylinder (1) has an opening (6) for inserting and rotating the rotating gear (9). One side of the rotating gear (9) is connected to the power output shaft of the servo motor (8).

5. The lotus seed screening device according to claim 1, characterized in that, Both sides of the inner wall of the fixed cylinder (1) are fixed with circular limiting rings (10). The inner side of the limiting ring (10) is provided with a groove, and a roller (11) is rotatably connected in the groove in an annular shape. The outer wall of the screening cylinder (2) is provided with a rolling groove at the position corresponding to the roller (11). The rolling surface of the roller (11) is placed in the rolling groove. The outer wall of the screening cylinder (2) is fixed with a retaining ring (12) at the position on both sides of each limiting ring (10).

6. The lotus seed screening device according to claim 1, characterized in that, The fixed cylinder (1) has a discharge port (7) on one side of its inner bottom wall.

7. The lotus seed screening device according to claim 1, characterized in that, It also includes a cylinder (15) and a support plate (16). The top of the power output shaft of the cylinder (15) is rotatably connected to the bottom of the fixed cylinder (1). A rotating rod (1601) is rotatably connected to the support plate (16). The end of the rotating rod (1601) away from the support plate (16) is fixedly connected to the fixed cylinder (1). The cylinder (15) is located on one side of the bottom of the fixed cylinder (1). There are two support plates (16) and they are located on the other side of the fixed cylinder (1). The fixed cylinder (1) is located between the two support plates (16). The fixed cylinder (1) is inclined by the support of the cylinder (15) and the two support plates (16).

8. The lotus seed screening device according to claim 1, characterized in that, The length of the screening cylinder (2) is the same as the length of the fixed cylinder (1). The inner bottom wall of the fixed cylinder (1) is a smooth mirror structure and there is a gap between it and the toothed ring (5).

9. The lotus seed screening device according to claim 1, characterized in that, The top of the screening cylinder (2) has a lever (201) fixed at equal distances along the longitudinal direction on both the front and rear sides.

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