A crop seed screening and impurity removing device

Abstract

The utility model relates to the technical field of seed screening equipment, and concretely is a crop seed screening and impurity removing device, which comprises a cylinder, a supporting plate, a limiting ring, the supporting plate is symmetrically arranged at the both ends of the bottom side of the cylinder, the limiting ring is fixed at the top end of the supporting plate, the limiting ring is rotationally connected with the cylinder, a screening mechanism, a driving mechanism and an output assembly, the screening mechanism is arranged on the inner side of the cylinder, the driving mechanism is arranged on the side surface of the supporting plate, and the output assembly is arranged at one end of the cylinder. The utility model discloses the structure of the screening mechanism, in the screening process of seed, through the cooperation of the first screen and the second screen, the impurities that are greater than or smaller than the seed can be screened out respectively, so that the purity of the screened seed is improved, and the seed can grow normally after planting.

Description

Technical Field

[0001] This utility model relates to the technical field of seed screening equipment, specifically a crop seed screening and impurity removal device. Background Technology

[0002] Crop seeds are the core foundation of agricultural production. They are plant organs with reproductive capacity and can germinate into new plants under suitable conditions. To ensure normal seed growth, screening and impurity removal devices are needed to remove impurities from crop seeds and improve seed purity. A search revealed that publication number CN222197869U discloses a crop seed screening device, including an air-separation mechanism, a feeding mechanism, a slag-discharging mechanism, a screening mechanism, and an adjusting mechanism. The feeding mechanism is installed above the air-separation mechanism, the slag-discharging mechanism is installed inside the air-separation mechanism, the screening mechanism is installed inside the air-separation mechanism, and the adjusting mechanism is installed on the screening mechanism. The air-separation mechanism performs air separation, the feeding mechanism feeds the seeds, the slag-discharging mechanism discharges slag, and the screening mechanism performs screening. This allows for the removal of lighter impurities such as dust and seed coats from the seeds during the screening process, the removal of the seed coat covering the seeds, and adjustment of the desired seed size.

[0003] The above-mentioned crop seed screening device also has a problem: during the use of the screening device, it can only remove impurities larger than seed particles. If there are small impurities during the screening process, the screening device will not be able to remove them, thus affecting the screening quality of the seeds. Utility Model Content

[0004] To address the above technical problems, this utility model provides a crop seed screening and impurity removal device.

[0005] To solve the above-mentioned technical problems, the present invention provides a crop seed screening and impurity removal device, comprising a cylinder, a support plate, and a limiting ring. The support plate is symmetrically arranged at both ends of the bottom side of the cylinder; the limiting ring is fixed to the top of the support plate; the limiting ring is rotatably connected to the cylinder; it also includes a screening mechanism, a driving mechanism, and an output component; the screening mechanism is a double-layer structure arranged inside the cylinder, used to screen seeds and impurities; the driving mechanism is arranged on the side of the support plate, used to drive the cylinder to rotate; the output component is arranged at one end of the cylinder, used to output impurities and seeds.

[0006] Furthermore, the screening mechanism includes a first screen, a second screen, and spiral blades. The first screen is fixed inside the cylinder, and a second screen is fixed inside the first screen. Spiral blades are also fixed inside the cylinder, and the spiral blades penetrate the first screen and the second screen. An inlet is provided at one end of the cylinder, and a connecting seat is rotatably installed at the other end of the cylinder. A material conveying port is provided inside the end of the cylinder where the connecting seat is located. A bracket is fixed to the side of the support plate, and a groove plate is fixed to the top of the inner side of the bracket. The groove plate is located at the bottom side of the material conveying port.

[0007] Furthermore, the drive mechanism includes a servo motor, a drive pulley, and a driven pulley. The servo motor is fixed to one corner of the side of the support plate, and a drive pulley is fixed to the output end of the servo motor. A driven pulley is fixed to the outside of the cylinder, and the driven pulley is connected to the drive pulley in a driving connection.

[0008] Furthermore, the output component includes a baffle, an output port, an arc plate, and a waste port. The baffle is detachably connected to one end of the second screen. An output port is provided at the edge of the baffle. An arc plate is fixed at the side edge of the baffle, and the arc plate corresponds to the position of the output port. A waste port is provided at one end of the bottom circumferential surface of the cylinder.

[0009] Furthermore, the cylinder is installed at an angle, with the end where the cylinder inlet is located higher than the end where the material inlet is located.

[0010] Furthermore, the diameter of the mesh openings of the first screen is smaller than the diameter of the mesh openings of the second screen.

[0011] This utility model has the following advantages compared with the prior art:

[0012] This invention utilizes a double-layer sieving structure. During the seed sieving process, the first and second screens work together to remove impurities that are larger and smaller than the seeds, respectively, thereby improving the purity of the seeds after sieving and ensuring normal growth after planting. By incorporating spiral blades, the seeds and impurities can be pushed together towards the discharge port and discharged through different outlets, preventing material and impurities from remaining inside the cylinder. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a cross-sectional schematic diagram of the screening mechanism;

[0015] Figure 3 This is a cross-sectional view of the discharge end;

[0016] Figure 4 This is a cross-sectional schematic diagram of the drive mechanism;

[0017] Figure 5 This is a cross-sectional view of the output component.

[0018] The following are the labels in the diagram: 1. Cylinder; 2. Screening mechanism; 21. First screen; 22. Second screen; 23. Spiral blade; 24. Inlet; 25. Connecting seat; 26. Feed inlet; 27. Support; 28. Groove plate; 3. Support plate; 4. Limiting ring; 5. Drive mechanism; 51. Servo motor; 52. Drive pulley; 53. Driven pulley; 54. Belt; 6. Output assembly; 61. Baffle; 62. Output port; 63. Arc plate; 64. Waste port. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] like Figures 1 to 5 The illustrated crop seed screening and impurity removal device includes a cylinder 1, a support plate 3, and a limiting ring 4. The support plate 3 is symmetrically arranged at both ends of the bottom side of the cylinder 1. The limiting ring 4 is fixedly connected to the top of the support plate 3. The limiting ring 4 is rotatably connected to the cylinder 1 through a bearing structure. The device also includes a screening mechanism 2, a driving mechanism 5, and an output component 6. The screening mechanism 2 is a double-layer structure arranged inside the cylinder 1 and is used to screen seeds and impurities. The driving mechanism 5 is arranged on the side of the support plate 3 and is used to drive the cylinder 1 to rotate. The output component 6 is arranged at one end of the cylinder 1 and is used to output impurities and seeds.

[0021] The screening mechanism 2 includes a first screen 21, a second screen 22, and a spiral blade 23. The first screen 21 is fixed inside the cylinder 1, and the second screen 22 is fixed inside the first screen 21. The interval between the cylinder 1 and the first screen 21, and between the second screen 22 and the first screen 21, is set to be between 200 and 400 mm. The spiral blade 23 is also fixed inside the cylinder 1. The spiral blade 23 passes through the first screen 21 and the second screen 22. An inlet 24 is opened at one end of the cylinder 1, and a connecting seat 25 is rotatably installed at the other end of the cylinder 1. A feed port 26 is opened inside the end of the cylinder 1 where the connecting seat 25 is located. The feed port 26 is located between the first screen 21 and the second screen 22. A bracket 27 is fixed on the side of the support plate 3. A groove plate 28 is fixed at the top of the inner side of the bracket 27. The groove plate 28 is located at the bottom side of the feed port 26.

[0022] The drive mechanism 5 includes a servo motor 51, a drive pulley 52, and a driven pulley 53. The servo motor 51 is fixed to one corner of the side of the support plate 3. The output end of the servo motor 51 is fixed to the drive pulley 52. ​​The driven pulley 53 is fixed to the outside of the cylinder 1. The driven pulley 53 and the drive pulley 52 are connected by a belt drive. In this embodiment, the driven pulley 53 and the drive pulley 52 are driven by a belt. If screening some heavier seeds, the driven pulley 53 and the drive pulley 52 can also be driven by gear meshing to ensure the driving effect.

[0023] The output component 6 includes a baffle 61, an output port 62, an arc plate 63, and a waste port 64. The baffle 61 is detachably connected to one end of the second screen 22. An output port 62 is provided at the edge of the baffle 61. An arc plate 63 is fixed at the side edge of the baffle 61, and the arc plate 63 corresponds to the position of the output port 62. The arc plate 63 plays a guiding role. A waste port 64 is provided at one end of the bottom circumferential surface of the cylinder 1. The waste port 64 is located between the first screen 21 and the cylinder 1.

[0024] The cylinder 1 is installed at an angle, with the end containing the inlet 24 higher than the end containing the feed inlet 26. This facilitates better discharge of seeds with shapes that are not conducive to rolling. The mesh diameter of the first screen 21 is smaller than that of the second screen 22, creating a three-layer classification inside the cylinder from the inside out, separating large particles, seeds, and small particles, which are then discharged from their respective outlets. The mesh diameters of the first screen 21 and the second screen 22 are determined by the size of the seeds being screened. The mesh diameter of the first screen 21 is slightly larger than that of the seeds being screened, and the mesh diameter of the second screen 22 is slightly smaller than that of the seeds being screened. It should be noted that impurities the same size as the seeds can be removed subsequently using other screening equipment, such as air separation or color sorting.

[0025] The working process of this embodiment is as follows:

[0026] The servo motor 51 is controlled to drive the output pulley 52 to rotate. At this time, with the cooperation of the belt 54, the driven pulley 53 is driven to rotate, thereby providing power for the rotation of the cylinder 1. Seeds to be screened are added through the input port 24. Then the cylinder 1 rotates inside the limit ring 4. With the cooperation of the spiral blades 23, the material is conveyed and moved. At this time, the second screen 22 filters out impurities with particles larger than the seeds. Seeds and small particles of impurities fall into the inner side of the first screen 21. Then the seeds are conveyed and moved again, causing impurities with particles smaller than the seeds and shriveled small-diameter seeds to pass through the first screen 21 and fall between the inner wall of the cylinder 1 and the first screen 21. Finally, the seeds are conveyed to the feed port 26 and fall into the groove plate 28 inside the support 27 for output. Large particles of impurities are discharged from the output port 62, while small particles of impurities are output from the waste port 64, thereby realizing the function of screening and classifying according to different particle sizes.

Claims

1. A seed screening and impurity removal device for crops, comprising a cylinder (1), a support plate (3), and a limiting ring (4), wherein the support plate (3) is symmetrically arranged at both ends of the bottom side of the cylinder (1); the limiting ring (4) is fixed to the top of the support plate (3); and the limiting ring (4) is rotatably connected to the cylinder (1); characterized in that: Also includes: The screening mechanism (2), the driving mechanism (5), and the output component (6) are provided. The screening mechanism (2) is a double-layer structure set inside the cylinder (1) and is used to screen seeds and impurities. The driving mechanism (5) is set on the side of the support plate (3) and is used to drive the cylinder (1) to rotate. The output component (6) is set at one end of the cylinder (1) and is used to output impurities and seeds.

2. The crop seed screening and impurity removal device according to claim 1, characterized in that: The screening mechanism (2) includes a first screen (21), a second screen (22), and a spiral blade (23). The first screen (21) is fixed inside the cylinder (1), and the second screen (22) is fixed inside the first screen (21). The spiral blade (23) is also fixed inside the cylinder (1). The spiral blade (23) passes through the first screen (21) and the second screen (22). One end of the cylinder (1) is provided with an inlet (24), and the other end of the cylinder (1) is rotatably installed with a connecting seat (25). The cylinder (1) is provided with a material conveying port (26) on the inner side of the end where the connecting seat (25) is located. A bracket (27) is fixed on the side of the support plate (3). A groove plate (28) is fixed on the top of the inner side of the bracket (27). The groove plate (28) is located on the bottom side of the material conveying port (26).

3. The crop seed screening and impurity removal device according to claim 1, characterized in that: The drive mechanism (5) includes a servo motor (51), a drive pulley (52), and a driven pulley (53). The servo motor (51) is fixed on one corner of the side of the support plate (3). The output end of the servo motor (51) is fixed with a drive pulley (52). The driven pulley (53) is fixed outside the cylinder (1). The driven pulley (53) is connected to the drive pulley (52) in a transmission connection.

4. The crop seed screening and impurity removal device according to claim 1, characterized in that: The output component (6) includes a baffle (61), an output port (62), an arc plate (63), and a waste port (64). The baffle (61) is detachably connected to one end of the second screen (22). An output port (62) is provided at the edge of the baffle (61). An arc plate (63) is fixed at the side edge of the baffle (61), and the arc plate (63) corresponds to the position of the output port (62). A waste port (64) is provided at one end of the bottom circumferential surface of the cylinder (1).

5. The crop seed screening and impurity removal device according to claim 1, characterized in that: The cylinder (1) is installed at an angle, with the end of the cylinder (1) containing the inlet (24) being higher than the end containing the feed inlet (26).

6. The crop seed screening and impurity removal device according to claim 2, characterized in that: The mesh diameter of the first screen (21) is smaller than that of the second screen (22).

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