Screening device for seeds

Abstract

The utility model discloses a seed screening device which comprises an installation frame, a screening box capable of rotating is installed on the installation frame, a large particle screen, a seed screen and a small particle collecting plate are arranged in the screening box from top to bottom, the large particle screen is fixed in the box, and a plurality of telescopic cylinders are fixedly installed at the bottom of the large particle screen. A driving motor is arranged at the bottom of the mounting frame, the output end of the driving motor is connected to the bottom of the screening box, a hopper is arranged at the top of the mounting frame, and the hopper is connected with the top of the screening box through a rotating joint; according to the utility model, the large-particle screen is adopted to screen out large-particle impurities and chippings in seeds, the seed screen is adopted to screen out small-particle chippings, dust and wizened seeds in the seeds through rotation and up-down telescopic shaking of the telescopic cylinder, and the inclined small-particle collecting plate is adopted to discharge the screened impurities through the collecting port.

Description

Technical Field

[0001] The utility model relates to the technical field of seed screening, and is specifically a screening device for seeds. Background Art

[0002] Agricultural seeds refer to plant organs that can be directly used for sowing in agricultural production. To distinguish them from seeds in botany, they are called agricultural seeds. Before planting seeds, they need to be screened to remove impurities, broken grains, shriveled and small-grained seeds to obtain full seeds, so as to ensure the germination rate. The harvested seeds will be mixed with impurities such as leaves and pebbles, as well as broken grains and small-grained seeds. Unqualified seeds will not germinate or will not germinate easily. Even if they germinate, they will not survive easily and need to be replanted, which will cause uneven growth in the later stage, making it difficult to manage and reducing labor efficiency. For this reason, a seed screening device is needed that can screen out impurities, broken grains and shriveled small-grained seeds to obtain full and clean seeds. Utility Model Content

[0003] The purpose of the utility model is to provide a seed screening device that can sift away impurities, crushed particles and shriveled small seeds in the seeds to obtain full and clean seeds.

[0004] The utility model achieves the above-mentioned purpose through the following technical scheme: a seed screening device is provided, comprising a mounting frame, a screening box is rotatably arranged on the mounting frame, a large particle screen, a seed screen and a small particle collecting plate are arranged in the screening box from top to bottom, the large particle screen is fixedly installed in the screening box, and a plurality of telescopic cylinders are evenly fixedly installed at the bottom of the large particle screen at equal angles, the seed screen is arranged below the telescopic cylinder, one end of the telescopic rod of each telescopic cylinder is fixedly connected to the seed screen, and the bottom of the seed screen passes through the connecting mounting plate. A discharge pipe is installed, a butterfly valve is installed on the discharge pipe, one end of the discharge pipe passes through the box wall of the screening box, the small particle collecting plate is obliquely arranged below the discharge pipe, and a collecting port for collecting particles on the inclined small particle collecting plate is opened on the box wall of the screening box; a driving motor is fixedly installed at the bottom of the mounting frame, the output end of the driving motor passes through the mounting frame and is fixedly connected to the bottom of the screening box, a hopper is provided on the top of the mounting frame, the hopper is connected to the screening box through a connecting pipe, and a rotating joint is installed at the connection between the hopper and the top of the screening box.

[0005] Further, four telescopic cylinders are installed at the bottom of the large particle screen at an equal angle.

[0006] Furthermore, the mesh opening of the seed screen is fixedly connected with connection blocks having the same number and position as the telescopic cylinders, and the telescopic rod of each telescopic cylinder is fixedly connected to the corresponding connection block.

[0007] Furthermore, the bottoms of the large particle screen and the seed screen are both arranged to be concave in shape to facilitate rapid material dropping.

[0008] Furthermore, the discharge pipe is divided into a metal pipe and a plastic hose, the metal pipe passes through the seed screen and is fixedly connected to the middle position of the bottom of the seed screen, the butterfly valve is installed on the metal pipe, the bottom of the metal pipe is connected to the plastic hose, and one end of the plastic hose passes through the wall of the screening box for discharge.

[0009] Furthermore, a sealed door is installed at the collection port through a hinge connection, and a window is opened on the box wall of the screening box on one side of the large particle screen and a window door is installed through a hinge connection.

[0010] Furthermore, the diameter of the seeds is smaller than the diameter of the mesh of the seed screen, and the diameter of the mesh of the seed screen is smaller than the diameter of the mesh of the large particle screen.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. In the utility model, large-particle screens are used to screen out large-particle impurities and debris in seeds, and seed screens are used to screen out small-particle debris, dust and shriveled seeds in seeds by rotating and telescopically shaking the telescopic cylinder up and down. An inclined small-particle collecting plate is used to discharge the screened impurities through the collecting port. The bottoms of the large-particle screen and the seed screen are both set to a concave shape, which is conducive to rapid material dropping and improves the screening efficiency.

[0013] 2. The combined design of metal tube and plastic hose makes the discharge pipe highly durable and flexible, which helps to maintain the stability and accuracy of discharge.

[0014] 3. The installation of the butterfly valve on the discharge pipe makes it easy to control the seed discharge amount and enhances the control ability of the seed screening process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 It is a top view of the utility model;

[0017] Figure 3 for Figure 2 Sectional view of AA in the middle;

[0018] Figure 4 It is a schematic diagram of the structure inside the screening box in the utility model.

[0019] In the figure: 1-mounting frame, 2-screening box, 3-large particle screen, 4-seed screen, 5-small particle collecting plate, 6-telescopic cylinder, 7-discharging pipe, 8-butterfly valve, 9-driving motor, 10-hopper, 11-rotating joint, 12-connecting block, 13-sealing door, 14-window door;

[0020] 21-collection port, 71-metal pipe, 72-plastic hose. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] Combination Figures 1 to 4 The seed screening device shown in the figure comprises a mounting frame 1, a screening box 2 is rotatably arranged on the mounting frame 1, a large particle screen 3, a seed screen 4 and a small particle collecting plate 5 are arranged in the screening box 2 from top to bottom, the large particle screen 3 is fixedly installed in the screening box 2, and a plurality of telescopic cylinders 6 are evenly fixedly installed at the bottom of the large particle screen 3 at equal angles, a seed screen 4 is arranged below the telescopic cylinder 6, one end of the telescopic rod of each telescopic cylinder 6 is fixedly connected to the seed screen 4, a discharge pipe 7 is installed through the bottom of the seed screen 4, and the discharge pipe 7 A butterfly valve 8 is installed on the mounting frame 1, one end of the discharge pipe 7 passes through the box wall of the screening box 2, a small particle collecting plate 5 is inclinedly arranged below the discharge pipe 7, and a collecting port 21 for collecting particles on the inclined small particle collecting plate 5 is opened on the box wall of the screening box 2; a driving motor 9 is fixedly installed at the bottom of the mounting frame 1, the output end of the driving motor 9 passes through the mounting frame 1 and is fixedly connected to the bottom of the screening box 2, a hopper 10 is arranged on the top of the mounting frame 1, the hopper 10 is connected to the screening box 2 through a connecting pipe, and a rotary joint 11 is installed at the connection between the hopper 10 and the top of the screening box 2;

[0024] Among them, four telescopic cylinders 6 are evenly fixedly installed at the bottom of the large particle screen 3 at equal angles; a connection block 12 with the same number and position as the telescopic cylinders 6 is fixedly connected at the upper net port of the seed screen 4, and the telescopic rod of each telescopic cylinder 6 is fixedly connected to the corresponding connection block 12; the net bottoms of the large particle screen 3 and the seed screen 4 are both set to be concave to quickly drop the material; the discharge pipe 7 is divided into a metal pipe 71 and a plastic hose 72, the metal pipe 71 passes through the seed screen 4 and is fixedly connected to the middle position of the bottom of the seed screen 4, the butterfly valve 8 is installed on the metal pipe 71, the bottom of the metal pipe 71 is connected to the plastic hose 72, and one end of the plastic hose 72 passes through the box wall of the screening box 2 for discharging; a sealing door 13 is installed at the collecting port 21 through a hinge connection, and a window is opened on the box wall of the screening box 2 on one side of the large particle screen 3 and a window door 14 is installed through a hinge connection; the diameter of the seed is smaller than the diameter of the mesh of the seed screen 4, and the mesh diameter of the seed screen 4 is smaller than the diameter of the mesh of the large particle screen 3.

[0025] Working principle: When in use, start the driving motor 9 to drive the screening box 2 to rotate on the mounting frame 1, wherein the top of the screening box 2 is connected to the hopper 10 through the rotating joint 11 and the connecting pipe, so when the screening box 2 rotates, the hopper 10 and the connecting pipe do not rotate with it, and then the seeds to be screened are added into the screening box 2 through the hopper 10, and the large-particle screen 3 screens out the large-particle impurities and debris in the seeds, and the impurities and debris can be removed by opening the window 14 after the screening box 2 stops rotating, and then the seeds fall into the seed screen 4 through the mesh of the large-particle screen 3, and the telescopic cylinder 6 is started, and the seed screen 4 is passively The telescopic rod of the rotating and telescopic cylinder 6 is telescopically moved up and down to screen out small particles, dust and shriveled seeds in the seeds, and then the inclined small particle collecting plate 5 collects the screened impurities at its inclined bottom, and after the screening box 2 stops rotating, the sealing door 13 is opened and discharged from the collecting port 21; when the seed screening is completed, the screening box 2 stops rotating, and then the butterfly valve 8 is opened, and the telescopic cylinder 6 is started again, and the telescopic rod of the telescopic cylinder 6 is telescopically moved up and down to make the seeds flow out from the seed screen 4 along the discharge pipe 7, wherein since the bottom of the seed screen 4 is set to be concave, the discharge speed of the seeds is accelerated.

[0026] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0027] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A seed screening device, comprising a mounting frame (1), characterized in that: A screening box (2) is rotatably arranged on the mounting frame (1), and a large particle screen (3), a seed screen (4) and a small particle collecting plate (5) are respectively arranged in the screening box (2) from top to bottom. The large particle screen (3) is fixedly installed in the screening box (2), and a plurality of telescopic cylinders (6) are evenly and fixedly installed at the bottom of the large particle screen (3) at equal angles, and the seed screen (4) is arranged below the telescopic cylinder (6), and one end of the telescopic rod of each telescopic cylinder (6) is fixedly connected to the seed screen (4), and a discharge pipe (7) is installed through the bottom of the seed screen (4), and a butterfly valve (8) is installed on the discharge pipe (7). One end of the mounting frame (1) passes through the wall of the screening box (2); the small particle collection plate (5) is obliquely arranged below the discharge pipe (7); and a collection port (21) is provided on the wall of the screening box (2) for collecting particles on the inclined small particle collection plate (5); a drive motor (9) is fixedly installed at the bottom of the mounting frame (1); the output end of the drive motor (9) passes through the mounting frame (1) and is fixedly connected to the bottom of the screening box (2); a hopper (10) is provided at the top of the mounting frame (1); the hopper (10) is connected to the screening box (2) through a connecting pipe; and a rotary joint (11) is installed at the connection between the hopper (10) and the top of the screening box (2).

2. The seed screening device according to claim 1, characterized in that: Four telescopic cylinders (6) are evenly and fixedly mounted at equal angles on the bottom of the large particle screen (3).

3. The seed screening device according to claim 2, characterized in that: The seed screen (4) is fixedly connected at the mesh opening thereof with connection blocks (12) having the same number and position as the telescopic cylinders (6), and the telescopic rod of each telescopic cylinder (6) is fixedly connected to the corresponding connection block (12).

4. The seed screening device according to claim 3, characterized in that: The bottoms of the large particle screen (3) and the seed screen (4) are both arranged to be concave in shape to facilitate rapid material dropping.

5. The seed screening device according to claim 4, characterized in that: The discharge pipe (7) is divided into a metal pipe (71) and a plastic hose (72). The metal pipe (71) passes through the seed screen (4) and is fixedly connected to the middle position of the bottom of the seed screen (4). The butterfly valve (8) is installed on the metal pipe (71). The bottom of the metal pipe (71) is connected to the plastic hose (72). One end of the plastic hose (72) passes through the wall of the screening box (2) for discharge.

6. The seed screening device according to claim 5, characterized in that: A sealed door (13) is installed at the collection port (21) via a hinged connection, and a window is provided on the box wall of the screening box (2) on one side of the large particle screen (3), and a window door (14) is installed via a hinged connection.

7. The seed screening device according to claim 6, characterized in that: The diameter of the seeds is smaller than the diameter of the mesh of the seed screen (4), and the diameter of the mesh of the seed screen (4) is smaller than the diameter of the mesh of the large particle screen (3).

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