Plant seed screening device

Abstract

The invention discloses a plant seed screening device which comprises a screening base, a storage box and a screening disc, the screening disc is rotatably installed in the screening base, and a gas channel facing the center from the edge of the screening disc is arranged in the storage box. According to the screening device, the seeds are screened through centrifugal force and thrust of airflow to the seeds, the seeds can be screened from multiple dimensions such as the weight, the fullness degree and the size of the seeds, and therefore the seeds with higher quality can be screened out.

Description

Technical Field

[0001] The present application relates to a screening device, and in particular to a plant seed screening device. Background Art

[0002] After collecting seeds, agricultural factories need to screen them, especially for food seeds, the fullness of the seeds determines the quality of the seeds. Manufacturers need to grade the seeds according to their size, and different grades of seeds have different prices.

[0003] The existing screening method is to screen through a sieve. When screening with the sieve, the seeds can only be screened according to the size, but not according to the fullness of the seeds. Summary of the invention

[0004] In view of the problems existing in the prior art, the present application provides a plant seed screening device.

[0005] A plant seed screening device comprises: a screening base, a storage box and a screening disc, wherein the screening disc is rotatably installed in the screening base, and a gas passage extending from the edge of the screening disc toward the center is provided in the storage box.

[0006] Furthermore, the screening base includes an outer shell, a spherical funnel and a spherical bottom, wherein the top of the outer shell is fixedly connected to the edge of the spherical funnel, the bottom of the outer shell is fixedly connected to the edge of the spherical bottom, the outer shell, the spherical funnel and the spherical bottom are all coaxially arranged with the screening plate, and the screening plate is located between the outer shell and the spherical bottom.

[0007] Furthermore, a bearing support plate A and a bearing support plate B are also provided in the screening base, the bearing support plate A is located at the bottom of the spherical bottom, and the bearing support plate B is located at the top of the spherical bottom.

[0008] Furthermore, the screening disc is in the shape of a spherical sheet, and a plurality of prisms are equidistantly distributed on the upper surface of the screening disc.

[0009] Furthermore, the surface of the screening disk is provided with a plurality of through holes A and a plurality of through holes B, and the plurality of through holes A and the plurality of through holes B are distributed along the central circumference of the screening disk; the interior of the screening base is provided with a plurality of secondary screening cavities and a plurality of primary screening cavities, wherein the secondary screening cavities correspond one-to-one to the through holes A, and the primary screening cavities correspond one-to-one to the through holes B.

[0010] Furthermore, there is a gap between the edge of the screening disc and the screening base, and a plurality of three-level screening cavities are provided in the screening base corresponding to the edge of the screening disc.

[0011] Furthermore, in the screening disk, sliders A and sliders B are respectively installed at the corresponding through holes A and through holes B, which are used to block through holes A and through holes B. Slider A and slider B can both move horizontally, and an elastic member is installed inside, which applies a force toward the center of the screening disk to sliders A and slider B.

[0012] Furthermore, a plurality of air inlets which are equidistantly distributed around the circumference are provided on the edge of the screening base, and an exhaust pipe is provided at the center of the screening disk.

[0013] Furthermore, a plurality of primary discharge ports, secondary discharge ports and tertiary discharge ports are provided at the bottom of the screening base, and each primary discharge port, each secondary discharge port and each tertiary discharge port respectively correspond to a primary screening chamber, a secondary screening chamber and a tertiary screening chamber; a primary feed port, a secondary feed port and a tertiary feed port are provided on the upper surface of the storage box, and each primary feed port, each secondary feed port and each tertiary feed port respectively correspond to a primary discharge port, a secondary discharge port and a tertiary discharge port; correspondingly, storage chamber A, storage chamber B and storage chamber C are provided in sequence from the inside to the outside of the storage box, and the primary feed port is connected to the storage chamber A, the secondary feed port is connected to the storage chamber B, and the tertiary feed port is connected to the storage chamber C.

[0014] Technical effects and advantages of this application: In the present application, the screening device utilizes centrifugal force and the thrust of airflow on seeds to screen the seeds. The seeds can be screened based on multiple dimensions such as seed weight, fullness, size, etc., so as to screen out better quality seeds.

[0015] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained by the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of the exterior of a plant seed screening device is shown; Figure 2 A schematic diagram of the structure inside a plant seed screening device is shown; Figure 3 A schematic diagram of the structure of a storage box in a plant seed screening device is shown; Figure 4 A schematic diagram of the structure of the bottom of a screening base in a plant seed screening device is shown; Figure 5 A schematic structural diagram of a screening plate in a plant seed screening device is shown; Figure 6A schematic diagram of the structure inside a screening base in a plant seed screening device is shown; In the figure: 1-screening base; 11-housing, 12-spherical funnel, 13-air inlet, 14-third-stage screening chamber, 15-second-stage screening chamber, 16-first-stage screening chamber, 17-bearing support plate A, 18-bearing support plate B, 19-spherical bottom; 2-storage box; 21-storage chamber A, 22-storage chamber B, 23-storage chamber C; 3-screening disc; 31-prism, 32-baffle, 33-exhaust pipe, 34-coupling, 35-motor, 36-slider A, 37-slider B, 38-limiting rod, 39-guide rod; 4-first-level discharge port; 44-first-level feed port; 5-secondary discharge port; 55-secondary feed port; 6- third-level discharge port; 66- third-level feed port. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0018] In addition, in the application, the terms "first", "second" and other similar words are not intended to imply any order, quantity and importance, but are merely used to distinguish different elements. The terms "upper", "lower", "left", "right" and other similar words are merely positional relationships in the drawings.

[0019] like Figure 1 As shown, the embodiment of the present application provides a plant seed screening device, comprising: a screening base 1, a storage box 2 and a screening plate 3, wherein the screening plate 3 is rotatably installed in the screening base 1, and the screening base 1 and the screening plate 3 together constitute a screening device, and when the screening plate 3 rotates in the screening base 1, it will drive the seeds to rotate on the surface of the screening plate 3, so that under the action of centrifugal force, the seeds will move away from the center of the screening plate 3 of the screening base 1, and at this time, gas is introduced into the screening base 1 from the edge to the center, and the gas will apply a force toward the center of the screening plate 3 to the seeds, and the thrust of the airflow on the seeds is positively correlated with the surface area of ​​the seeds themselves. Under the same surface area, the fuller the seeds, the heavier they are. Therefore, the seeds will form layers on the surface of the screening plate 3 according to their weight and fullness, and the seeds will be screened in turn; The storage box 2 is located at the bottom of the screening base 1 . The storage box 2 is used to collect and store the seeds screened by the screening device. Another function of the storage box 2 is to support the screening base 1 and limit the screening base 1 .

[0020] Specific: like Figure 6 As shown, in one embodiment of the present application, the screening base 1 includes an outer shell 11, a spherical funnel 12 and a spherical bottom 19, wherein the top of the outer shell 11 is fixedly connected to the edge of the spherical funnel 12, the bottom of the outer shell 11 is fixedly connected to the edge of the spherical bottom 19, the outer shell 11, the spherical funnel 12 and the spherical bottom 19 are all coaxially arranged with the screening disc 3, and the screening disc 3 is located between the outer shell 11 and the spherical bottom 19.

[0021] like Figure 6 As shown, in one embodiment of the present application, a bearing support plate A17 and a bearing support plate B18 are also provided in the screening base 1, and the bearing support plate A17 and the bearing support plate B18 are used to install bearings to support the screening disc 3, wherein the bearing support plate A17 is located at the bottom of the spherical bottom 19, and the bearing support plate B18 is located at the top of the spherical bottom 19.

[0022] like Figure 5 As shown, in one embodiment of the present application, the screening disc 3 is in the shape of a spherical sheet, and a plurality of prisms 31 are equidistantly distributed on the upper surface of the screening disc 3, and each prism 31 is arranged along the radial direction of the screening disc 3; a plurality of through holes A and a plurality of through holes B are provided on the surface of the screening disc 3, and the plurality of through holes A and the plurality of through holes B are distributed along the central circumference of the screening disc 3; Correspondingly, such as Figure 6 As shown, the interior of the screening base 1 is provided with a plurality of secondary screening cavities 15 and a plurality of primary screening cavities 16, wherein the secondary screening cavities 15 correspond to the through holes A one by one, and the primary screening cavities 16 correspond to the through holes B one by one; seeds can pass through the through holes A or the through holes B and be discharged from the upper surface of the screening plate 3 into the secondary screening cavities 15 or the primary screening cavities 16. The seeds discharged into the secondary screening cavities 15 are fuller than the seeds discharged into the primary screening cavities 16.

[0023] like Figure 2 As shown, there is a gap between the edge of the screening plate 3 and the screening base 1, and a three-stage screening cavity 14 is provided in the screening base 1. Seeds can enter the three-stage screening cavity 14 along the gap, and the fullness of the seeds discharged into the three-stage screening cavity 14 is greater than that of the seeds discharged into the two-stage screening cavity 15.

[0024] like Figure 2As shown, in one embodiment of the present application, in the screening disc 3, sliders A36 and sliders B37 are respectively installed at the corresponding through holes A and through holes B, which are used to block the through holes A and through holes B. The sliders A36 and the sliders B37 can both move in the horizontal direction. A limiting rod 38 is provided at the bottom of the 3 corresponding to each slider A36 and each slider B37. A guide rod 39 is provided on each slider A36 and each slider B37. The guide rod 39 is inserted in the limiting rod 38, and the limiting rod 38 and the guide rod 39 cooperate to limit the moving range of the sliders A36 and the slider B37, and a spring is also installed between the limiting rod 38 and the slider A36 and between the limiting rod 38 and the slider B37. During the rotation process of 3, the slider A36 and the slider B37 are subjected to the centrifugal force when they rotate. When the rotation speed of the screening disc 3 gradually increases, the centrifugal force on the slider A36 and the slider B37 gradually increases. When the centrifugal force is greater than the elastic force of the spring, the slider A36 and the slider B37 move away from the screening disc 3, thereby opening the through hole A and the through hole B. This can prevent the seeds from being discharged through the through hole A and the through hole B before being separated when the screening disc 3 rotates.

[0025] like Figure 2 As shown, in one embodiment of the present application, a plurality of air inlets 13 equidistantly distributed around the circumference are provided at the edge of the screening base 1, and the spherical funnel 12 is in the shape of a spherical sheet to reduce the gap between the spherical funnel 12 and the screening disc 3, and to make the gap between the spherical funnel 12 and the screening disc 3 more uniform. An exhaust pipe 33 is provided in the center of the screening disc 3, and the gas enters the interior of the screening base 1 through the air inlet 13, passes through the gap between the spherical funnel 12 and the screening disc 3, and is finally discharged from the exhaust pipe 33. In order to prevent seeds from entering the exhaust pipe 33, a baffle 32 is provided above the exhaust pipe 33, and the baffle 32 and the exhaust pipe 33 are fixedly connected by a plurality of connecting rods.

[0026] like Figure 2 As shown, in one embodiment of the present application, a motor 35 is provided under the screening base 1, the output shaft of the motor 35 is connected to the exhaust pipe 33 through a coupling 34, and a plurality of air holes are provided on the coupling 34, and the gas in the exhaust pipe 33 can be discharged through the air holes in the coupling 34.

[0027] like Figure 2 As shown, in one embodiment of the present application, the edge of the screening disc 3 is first bent in the horizontal direction and then bent downward to form a downwardly open cavity, which cooperates with the bearing support plate B18 for installing bearings, and the downwardly bent portion can block the seeds to prevent the seeds from contacting the bearings.

[0028] like Figure 3 As shown, in one embodiment of the present application, the upper surface of the storage box 2 is stepped, gradually rising from the inside to the outside, and the upper surface of the storage box 2 is in contact with the bottom of the screening base 1.

[0029] In one embodiment of the present application, Figure 4 As shown, the bottom of 1 is provided with a plurality of primary discharge ports 4, secondary discharge ports 5, and tertiary discharge ports 6, each of which corresponds to a primary screening chamber 16, a secondary screening chamber 15, and a tertiary screening chamber 14, respectively. Figure 3 As shown, a primary feed port 44, a secondary feed port 55, and a tertiary feed port 66 are provided on the upper surface of the storage box 2, and each primary feed port 44, each secondary feed port 55, and each tertiary feed port 66 respectively correspond to a primary discharge port 4, a secondary discharge port 5, and a tertiary discharge port 6. Correspondingly, a storage cavity A21, a storage cavity B22, and a storage cavity C23 are provided in the storage box 2 from the inside to the outside, the primary feed port 44 is connected to the storage cavity A21, the secondary feed port 55 is connected to the storage cavity B22, and the tertiary feed port 66 is connected to the storage cavity C23.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A plant seed screening device, It is characterized in that include: A screening base (1), a storage box (2) and a screening disc (3), wherein the screening disc (3) is rotatably mounted in the screening base (1), and a gas passage extending from the edge of the screening disc (3) toward the center is provided in the storage box (2); The surface of the screening disc (3) is provided with a plurality of through holes A and a plurality of through holes B, and the plurality of through holes A and the plurality of through holes B are distributed along the central circumference of the screening disc (3); the interior of the screening base (1) is provided with a plurality of secondary screening cavities (15) and a plurality of primary screening cavities (16), wherein the secondary screening cavities (15) correspond one-to-one to the through holes A, and the primary screening cavities (16) correspond one-to-one to the through holes B; In the screening disc (3), a slider A (36) and a slider B (37) are respectively installed at the positions corresponding to the through hole A and the through hole B, and are used to block the through hole A and the through hole B. The slider A (36) and the slider B (37) can both move in the horizontal direction. An elastic member is installed in the (3), and the elastic member applies a force toward the slider A (36) and the slider B (37) toward the center of the screening disc (3).

2. A plant seed screening device according to claim 1, It is characterized in that The screening base (1) comprises an outer shell (11), a spherical funnel (12) and a spherical bottom (19), wherein the top of the outer shell (11) is fixedly connected to the edge of the spherical funnel (12), and the bottom of the outer shell (11) is fixedly connected to the edge of the spherical bottom (19), and the outer shell (11), the spherical funnel (12) and the spherical bottom (19) are all coaxially arranged with the screening disc (3), and the screening disc (3) is located between the outer shell (11) and the spherical bottom (19).

3. A plant seed screening device according to claim 2, It is characterized in that The screening base (1) is further provided with a bearing support plate A (17) and a bearing support plate B (18), wherein the bearing support plate A (17) is located at the bottom of the spherical bottom (19), and the bearing support plate B (18) is located at the top of the spherical bottom (19).

4. A plant seed screening device according to claim 1, It is characterized in that The screening disc (3) is in the form of a spherical sheet, and a plurality of prism sheets (31) are equidistantly distributed on the upper surface of the screening disc (3).

5. A plant seed screening device according to claim 1, It is characterized in that There is a gap between the edge of the screening disc (3) and the screening base (1), and a plurality of three-level screening cavities (14) are provided in the screening base (1) at the edge corresponding to the screening disc (3).

6. A plant seed screening device according to claim 1, It is characterized in that The edge of the screening base (1) is provided with a plurality of air inlets (13) distributed at equal intervals around the circumference, and the center of the screening disc (3) is provided with an exhaust pipe (33).

7. A plant seed screening device according to claim 1, It is characterized in that The bottom of the screening base (1) is provided with a plurality of primary discharge ports (4), secondary discharge ports (5), and tertiary discharge ports (6), each of the primary discharge ports (4), each of the secondary discharge ports (5), and each of the tertiary discharge ports (6) respectively corresponds to a primary screening cavity (16), a secondary screening cavity (15), and a tertiary screening cavity (14), and the upper surface of the storage box (2) is provided with a primary feed port (44), a secondary feed port (55), and a tertiary feed port (66), each of the primary feed port (44), Each secondary feed port (55) and each tertiary feed port (66) respectively correspond to a primary discharge port (4), a secondary discharge port (5), and a tertiary discharge port (6); correspondingly, a storage chamber A (21), a storage chamber B (22), and a storage chamber C (23) are sequentially provided in the storage box (2) from the inside to the outside; the primary feed port (44) is communicated with the storage chamber A (21), the secondary feed port (55) is communicated with the storage chamber B (22), and the tertiary feed port (66) is communicated with the storage chamber C (23).

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