Agricultural seed screening device
By designing a seed screening device combining airflow separation and multi-stage screening, the problems of unclean straw removal and incomplete sieving of small-grain seeds in the prior art are solved, and efficient and thorough seed screening effect is achieved.
Patent Information
- Application Number
- CN202420319180.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-21
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-02-21
AI Technical Summary
When screening seeds, it is difficult to completely remove straw impurities, and the sieving of small seeds is not thoroughly affected, which affects the quality of screening.
An agricultural seed screening device including an airflow separation device and a screening device is designed. The airflow separation device separates the lighter mass straw or incomplete seeds in the seeds by generating a vortex airflow, while the screening device classifies the seeds by size through a multi-stage screen.
It effectively improves the efficiency and cleanliness of seed screening, can screen out seeds of different sizes at one time, and improves the screening quality.
Smart Images
Figure CN222491012U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a screening device, in particular to an agricultural seed screening device. Background Art
[0002] The seed screening device is a kind of agricultural equipment commonly used in the agricultural field during planting. There are some large seed screening devices in the prior art, which have complex structures and high purchase costs, and are not suitable for some small seed screening factories. There are also some simple seed screening devices, which pour the seeds on the screen when screening the seeds. With the vibration of the vibration motor on the screen, the straw impurities or impurities with smaller particles in the seeds are removed, but this structure can only screen out larger straws, while smaller straws or straws that are similar to seeds will be collected together with seeds with better appearance, resulting in the impurities in the screened seeds cannot be completely removed, and the small-particle seeds are not screened thoroughly, which reduces the quality of screening. Utility Model Content
[0003] The utility model provides an agricultural seed screening device, which solves the problem in the related art that when screening seeds, straws are not cleaned up and small-particle seeds are not screened thoroughly.
[0004] The technical solution of the utility model is as follows:
[0005] An agricultural seed screening device comprises an airflow separation device for separating straw from seeds and a screening device for separating seeds according to size;
[0006] The air flow separation device comprises a shell, a cage rotor arranged in the shell, and a driving device for driving the cage rotor to rotate. The upper half of the shell is cylindrical, and the lower half is conical. The cylindrical part of the shell is provided with an air inlet and a feed inlet. The air inlet is located above the feed inlet. The lower part of the conical part of the shell is provided with a discharge port. The upper part of the cage rotor is fixedly provided with an air flow outlet connected with the shell.
[0007] The screening device includes a box body, a first screen hingedly arranged in the box body, and a feeding plate hingedly arranged in the box body. The first screen body and the feeding plate are both fixedly provided with a vibration motor. The first screen body and the feeding plate are both inclined, and one end is located below the discharge port of the airflow separation device, and the other end extends out of the box body for collecting seeds.
[0008] As a limitation of the present utility model: the conical portion of the shell is provided with two secondary air inlets, and the secondary air inlets are arranged along the tangent direction of the shell.
[0009] As a further limitation of the present invention: the air inlet and the feed inlet are both arranged along the tangent direction of the shell.
[0010] As a further limitation of the utility model: an annular baffle is fixedly provided at the position where the airflow outlet is connected to the shell, a gap for the cage rotor to rotate is provided between the annular baffle and the cage rotor, and a side of the annular baffle away from the cage rotor is an inclined surface.
[0011] As a further limitation of the utility model: a second screen and a third screen are hingedly provided on the box body, the second screen and the third screen are both located between the first screen and the feeding plate, and are both inclined, a vibration motor is fixed on the second screen and the third screen, and the mesh openings of the first screen, the second screen and the third screen decrease successively.
[0012] As another limitation of the utility model: a scraper for material leveling is fixedly provided on the box body, and a gap for seeds to pass through is provided between the scraper and the first screen.
[0013] As a third limitation of the present utility model: the driving device includes a rotating shaft rotatably connected to the air flow outlet and a motor fixedly arranged at one end of the rotating shaft, and the other end of the rotating shaft is fixedly connected to the cage rotor.
[0014] As a fourth limitation of the present invention: the airflow outlet is located at one end connected to the shell and is conical.
[0015] The working principle and beneficial effects of the utility model are:
[0016] The utility model utilizes the vortex airflow generated in the airflow separation device to bring the lighter straw or incomplete seeds in the seeds out of the shell. The vortex airflow generated in the shell can cause the seeds to generate centrifugal force. The seeds with larger mass generate larger centrifugal force, and are thrown on the inner wall of the shell and then fall on the first screen from the discharge port, while the lighter straw is brought out of the shell with the airflow, and both large and small straws can be brought out with the airflow, which greatly improves the screening efficiency and cleanliness. The seeds are then classified according to the particle size through the multi-stage screen, and seeds of different sizes can be screened out in one screening, thereby improving the screening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0018] Figure 1 It is a perspective structural schematic diagram of an embodiment of the utility model.
[0019] In the figure: 1-shell, 2-leg, 3-cage rotor, 4-rotating shaft, 5-motor, 6-air flow outlet, 7-air inlet, 8-feeding port, 9-secondary air inlet, 10-annular baffle, 11-discharging port, 12-box, 13-first screen, 14-second screen, 15-third screen, 16-feeding plate, 17-vibration motor, 18-scraper. DETAILED DESCRIPTION
[0020] The following will be combined with 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 of 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. Example
[0021] like Figure 1 As shown, this embodiment proposes an agricultural seed screening device, including an airflow separation device and a screening device. The airflow separation device is used to separate the lighter straw and the damaged seeds in the seeds. The damaged seeds referred to in this embodiment are half-piece seeds or insect-eaten seeds, which are lighter due to their damage. The screening device is used to classify the seeds into different grades according to their size. The seeds first enter the airflow separation device, and after sorting, they fall on the screening device and are separated according to the seed size.
[0022] The airflow separation device includes a shell 1, a cage rotor 3 and a driving device. The upper half of the shell 1 is cylindrical, the lower half is conical, the upper end of the cylindrical part is sealed, and the lower half of the shell 1 is fixedly provided with three legs 2 for supporting it on the ground. The cage rotor 3 is vertically arranged in the shell 1 and is located at the upper end of the cylinder of the shell 1. The driving device includes a rotating shaft 4 and a motor 5. One end of the rotating shaft 4 extends into the shell 1 and is fixedly connected to the cage rotor 3, and the other end extends out of the shell 1 and is fixedly connected to the output shaft of the motor 5. An opening is provided on the upper end surface of the shell 1 at a position corresponding to the cage rotor 3, and an airflow outlet 6 is fixedly provided at the opening so that the airflow outlet 6 is connected to the interior of the shell 1. One end of the airflow outlet 6 is arc-shaped, and the other end is horizontally arranged and conical.
[0023] An air inlet 7 and a feed port 8 are provided on the cylindrical portion of the shell 1. Both the air inlet 7 and the feed port 8 are located on one side of the shell 1 and on the tangent direction of the shell 1. Meanwhile, the air inlet 7 is located above the feed port 8. Both are located on the same side, which is convenient for the seeds to enter the shell 1 and spiral around the shell 1 with the air flow. The feed port 8 is located at the bottom to prevent the air flow suction around the cage rotor 3 from being too large and to discharge the seeds of better quality directly from the air flow outlet 6.
[0024] Furthermore, two secondary air inlets 9 are fixedly provided at the conical part of the shell 1, and the two secondary air inlets 9 are symmetrical about the center of the shell 1 and are arranged along the tangent direction of the conical part of the shell 1. An annular baffle 10 is fixedly provided on the cylindrical upper end surface of the shell 1, and the annular baffle 10 is sleeved on the outside of the cage rotor 3 and is located at the opening where the upper end surface is connected to the air flow outlet 6. A gap is set between the annular baffle 10 and the cage rotor 3 for the cage rotor 3 to rotate, but the gap is small to prevent seeds from being discharged directly from the gap without passing through the cage rotor 3. The side of the annular baffle 10 away from the cage rotor 3 is an inclined surface, and the setting of the inclined surface can prevent airflow or seeds from gathering at the position where the upper end surface and the annular baffle 10 are connected.
[0025] The screening device includes a box 12, a first screen 13 and a feed plate 16. The top of the box 12 is open, and the first screen 13 is hingedly arranged on the inner wall of the box 12. A vibration motor 17 is fixedly arranged on the first screen 13. The first screen 13 is hingedly arranged on the box 12 and has a slight movement in the box 12 under the vibration of the vibration motor 17, which is used to screen seeds. A feed plate 16 is also hingedly arranged on the inner wall of the box 12, which is used to move the screened seeds to a position convenient for collection. The box 12 is also hingedly arranged with a second screen 14 and a third screen 15, and the second screen 14 and the third screen 15 are both located between the first screen 13 and the feed plate 16, and the first screen 13 and the second screen 14 are both fixedly arranged with a vibration motor 17. The first screen 13, the second screen 14 and the third screen 15 are arranged in sequence from top to bottom, and the meshes of the first screen 13, the second screen 14 and the third screen 15 are reduced in sequence, so that the seeds left on the first screen 13 are the largest, and the seeds dropped on the feeding plate 16 by the third screen 15 are the smallest. The first screen 13, the second screen 14, the third screen 15 and the feeding plate 16 are all arranged obliquely, and one end of the four is located below the discharge port 11 of the airflow separation device, and the other end extends out of the box 12, which is used to connect with the bag to collect seeds.
[0026] Furthermore, a scraper 18 for leveling the material is fixedly provided on the box body 12, and a gap for seeds to pass through is provided between the scraper 18 and the first screen 13. When the seeds coming out of the air flow separation device are concentrated below the discharge port 11, the seeds on the first screen 13 can be dispersed to both sides through the vibration of the vibration motor 17 and the obstruction of the scraper 18, and the thickness of the seeds on the first screen 13 can be ensured, thereby preventing uneven screening due to excessive thickness of the seeds spread on the first screen 13.
[0027] When using this embodiment, the seeds are allowed to enter the airflow separation and transposition housing 1 through the feed port 8. Under the rotation of the cage rotor 3, the airflow entering through the air inlet 7 forms a spiral airflow in the housing 1, and under the reinforcement of the airflow entering through the secondary air inlet 9, the seeds are driven to perform centrifugal motion in the housing 1. Lighter straw or incomplete seeds enter the cage rotor 3 with the airflow and are discharged from the airflow outlet 6, while heavier seeds fall on the first screen 13 from the discharge port 11. The vibration of the first screen 13 causes the seeds to move downward. Since the mesh openings of the first screen 13, the second screen 14, and the third screen 15 are reduced in sequence, the largest seeds remain on the first screen 13, and the seeds on the second screen 14, the third screen 15, and the feed plate 16 are reduced in sequence. Finally, the seeds falling on the feed plate 16 move downward to the end under the action of vibration and are collected. At night, while the seeds are cleaned, the seeds are screened into different sizes at one time.
[0028] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. An agricultural seed screening device, characterized in that: It includes an airflow separation device for separating straw from seeds and a screening device for separating seeds according to size; The air flow separation device comprises a shell, a cage rotor arranged in the shell, and a driving device for driving the cage rotor to rotate. The upper half of the shell is cylindrical, and the lower half is conical. The cylindrical part of the shell is provided with an air inlet and a feed inlet. The air inlet is located above the feed inlet. The lower part of the conical part of the shell is provided with a discharge port. The upper part of the cage rotor is fixedly provided with an air flow outlet connected with the shell. The screening device includes a box body, a first screen hingedly arranged in the box body, and a feeding plate hingedly arranged in the box body. The first screen body and the feeding plate are both fixedly provided with a vibration motor. The first screen body and the feeding plate are both inclined, and one end is located below the discharge port of the airflow separation device, and the other end extends out of the box body for collecting seeds.
2. The agricultural seed screening device according to claim 1, characterized in that: The conical portion of the shell is provided with two secondary air inlets, and the secondary air inlets are arranged along the tangent direction of the shell.
3. The agricultural seed screening device according to claim 2, characterized in that: The air inlet and the material inlet are both arranged along the tangent direction of the shell.
4. An agricultural seed screening device according to any one of claims 1 to 3, characterized in that: An annular baffle is fixedly arranged at the position where the airflow outlet is connected to the shell, a gap for the cage rotor to rotate is arranged between the annular baffle and the cage rotor, and a surface of the annular baffle away from the cage rotor is an inclined surface.
5. The agricultural seed screening device according to claim 4, characterized in that: The box body is also hingedly provided with a second screen and a third screen, which are both located between the first screen and the feeding plate and are both inclined, and the second screen and the third screen are both fixed with a vibration motor, and the mesh openings of the first screen, the second screen and the third screen decrease successively.
6. The agricultural seed screening device according to claim 5, characterized in that: A scraper for material leveling is fixedly arranged on the box body, and a gap for seeds to pass through is arranged between the scraper and the first screen.
7. An agricultural seed screening device according to any one of claims 1-3, 5 and 6, characterized in that: The driving device comprises a rotating shaft rotatably connected to the air flow outlet and a motor fixedly arranged at one end of the rotating shaft, and the other end of the rotating shaft is fixedly connected to the cage rotor.
8. The agricultural seed screening device according to claim 7, characterized in that: The airflow outlet is located at one end connected to the shell and is tapered.