An agricultural technology seed screening device
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG YUANYANG AGRI DEV CO LTD
- Filing Date
- 2025-06-18
- Publication Date
- 2026-06-12
AI Technical Summary
Existing seed screening devices cannot effectively adsorb magnetic impurities such as iron filings and metal fragments mixed in the seeds, resulting in damage to subsequent processing equipment and limited screening functionality.
A seed screening device incorporating a magnetic suction component was designed. The magnetic strips made of flexible permanent magnet material form a spiral structure on the screening mesh. Combined with a vibrating motor and a conical guide tube, the device achieves the adsorption of magnetic impurities and the sorting of seeds.
It effectively adsorbs magnetic impurities in seeds, improving seed purity and sowing safety, while facilitating the cleaning of the screening screen, achieving low-cost, high-reliability, multi-functional sorting.
Smart Images

Figure CN224346348U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an agricultural seed screening device, belonging to the technical field of screening devices. Background Technology
[0002] Agricultural technology refers to the technical means of improving agricultural production efficiency, crop quality, conserving resources, and protecting the environment by applying scientific principles and innovative methods. It encompasses technological innovations in all aspects of agricultural production, from land cultivation, planting, irrigation, and fertilization to harvesting, storage, and processing. Modern agricultural technologies include precision agriculture, intelligent irrigation, drone-based plant protection, gene editing, agricultural mechanization, and big data analysis. In agricultural production, seeds are a crucial factor determining crop growth and yield, and seed screening devices play a key role in ensuring seed quality and increasing crop yield.
[0003] Authorization announcement number (CN 219309336 U) discloses an agricultural technology seed screening device, including a load-bearing base plate, a support plate connected to one end of the load-bearing base plate, a motor platform on the back of the support plate, a drive motor above the motor platform, a vibration motor at the lower end of the back of the support plate, a top plate connected to the front of the upper end of the support plate, a feed hopper connected to the upper end of the top plate, a downward baffle connected to the other end of the top plate, support rods connected between the left and right sides of the support plate and the baffle, a rotating blade assembly connected between the two support rods, one end of the rotating blade assembly extending out of the support rod and connected to a belt device, the belt device being connected to the drive motor, a discharge box on the upper end of the load-bearing base plate, a first sieve box above the discharge box, a second sieve box above the first sieve box, and pulleys at the four corners of the lower end of the load-bearing base plate. The advantages of this utility model are: it can sort, position, and screen seeds in layers, with high screening efficiency and fast screening progress;
[0004] However, after seeds are collected, they may contain impurities such as iron filings and metal fragments. Existing seed screening devices lack magnetic strips on the sieve surface, which makes it impossible to effectively adsorb magnetic impurities such as iron filings and metal fragments mixed in with the seeds, such as metal particles generated by the wear of harvesters or iron debris mixed in from the field. These impurities may damage subsequent processing equipment. Traditional screening relies solely on the size of the sieve holes for separation, which is a single function and cannot solve such problems.
[0005] Therefore, an agricultural technology seed screening device is proposed. Utility Model Content
[0006] In view of this, the present invention provides an agricultural seed screening device to solve or alleviate the technical problems existing in the prior art, and at least provides a beneficial option.
[0007] The technical solution of this utility model is implemented as follows: an agricultural seed screening device, comprising:
[0008] The screening assembly includes a base plate, a steel spring, a base, a vibrating motor, a counterweight, a first assembly tube, and a second assembly tube. The vibrating motor is fixedly connected to the bottom of the base, and the counterweight is fixedly connected to the output end of the vibrating motor. The first assembly tube is located on the outer side of the top of the base, and the second assembly tube is located on the top of the first assembly tube.
[0009] A magnetic suction assembly includes a screening screen bolted to the inside of a second assembly tube. A magnetic strip is fixedly installed on the surface of the screening screen. The magnetic strip is a long strip magnet made of flexible permanent magnet material. A connecting tube is fixedly installed on the top of the second assembly tube.
[0010] More preferably, the magnetic strip is wound along the central axis of the screening mesh to form a helical structure with equal pitch, and the magnetization direction of the magnetic strip is distributed radially along the helix.
[0011] More preferably, the top of the outer side of the base and the bottom of the inner side of the first assembly tube are both provided with threaded sections, and the base is threadedly connected to the first assembly tube.
[0012] More preferably, the first assembly tube, the second assembly tube, and the connecting tube are all connected by bolt threads, which can be quickly disassembled when needed.
[0013] More preferably, the inner sides of both the second assembly tube and the connecting tube are equipped with tapered guide tubes, the diameter of which gradually decreases from top to bottom.
[0014] More preferably, the steel spring is fixedly connected to the perimeter of the base, and the base plate is fixedly connected to the lower end of the steel spring.
[0015] More preferably, a receiving bucket is placed on the inner side of the base, and the top of the receiving bucket has a downward-facing oblique opening.
[0016] The present invention has the following advantages due to the adoption of the above technical solution:
[0017] I. This utility model, through the setting of the magnetic suction component, can adsorb magnetic impurities such as iron filings and metal fragments mixed in the seeds during the seed screening process. This not only avoids damage to subsequent processing equipment by metal impurities, but also improves seed purity and sowing safety. At the same time, the detachable design of the screening screen makes it easy to clean impurities without additional electricity or complicated operation, thus realizing low-cost, high-reliability, multi-functional sorting.
[0018] II. This utility model guides the seeds through a conical guide tube, ensuring that the seeds always fall in the center during the screening process. The steel spring supports the bottom of the base, and the elasticity of the base increases the vibration amplitude as the counterweight rotates and drives the base to vibrate. The receiving bucket stores the filtered seeds.
[0019] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is a three-dimensional front view structural diagram of the present invention;
[0022] Figure 2 This is a schematic diagram of the three-dimensional bottom structure of this utility model;
[0023] Figure 3 This is a three-dimensional cross-sectional schematic diagram of the present invention;
[0024] Figure 4 This is a three-dimensional exploded view of the present invention.
[0025] Figure 5 This is a schematic diagram of the conical feed tube structure of this utility model;
[0026] Figure 6 This is a schematic diagram of the receiving bucket pipe structure of this utility model;
[0027] Figure 7 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle.
[0028] Reference numerals: 100, screening assembly; 101, base plate; 102, steel spring; 103, base; 104, vibrating motor; 105, eccentric block; 106, first assembly pipe; 107, second assembly pipe; 108, receiving bucket; 200, magnetic suction assembly; 201, screening screen; 202, magnetic strip; 203, connecting pipe; 204, conical guide pipe. Detailed Implementation
[0029] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.
[0030] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0031] Example 1
[0032] like Figure 1-7 As shown, this embodiment of the present invention provides an agricultural seed screening device, comprising:
[0033] The screening assembly 100 includes a base plate 101, a steel spring 102, a base 103, a vibrating motor 104, a counterweight 105, a first assembly tube 106, and a second assembly tube 107. The vibrating motor 104 is fixedly connected to the bottom of the base 103, and the counterweight 105 is fixedly connected to the output end of the vibrating motor 104. The first assembly tube 106 is located on the outer side of the top of the base 103, and the second assembly tube 107 is located on the top of the first assembly tube 106.
[0034] The magnetic suction assembly 200 includes a screening screen 201 that is bolted to the inside of the second assembly tube 107. A magnetic strip 202 is fixedly installed on the surface of the screening screen 201. The magnetic strip 202 is a long strip magnet made of flexible permanent magnet material. A connecting tube 203 is fixedly installed on the top of the second assembly tube 107.
[0035] The magnetic strip 202 is wound along the central axis of the screening mesh 201 to form a spiral structure with equal pitch, and the magnetization direction of the magnetic strip 202 is distributed radially along the spiral. The top of the outer side of the base 103 and the bottom of the inner side of the first assembly tube 106 are both provided with threaded sections. The base 103 is threadedly connected to the first assembly tube 106. The first assembly tube 106, the second assembly tube 107 and the connecting tube 203 are all connected by bolt threads, which can be quickly disassembled when needed.
[0036] By setting up the magnetic adsorption component 200, magnetic impurities such as iron filings and metal fragments mixed in the seeds can be adsorbed during the seed screening process. This not only avoids damage to subsequent processing equipment caused by metal impurities, but also improves seed purity and sowing safety. At the same time, the detachable design of the screening screen 201 makes it easy to clean impurities without the need for additional electricity or complicated operations, thus achieving low-cost, high-reliability, and multi-functional sorting.
[0037] Example 2
[0038] like Figure 1, Figure 2 , Figure 5 and Figure 6 As shown, in one embodiment, the inner sides of the second assembly tube 107 and the connecting tube 203 are both equipped with tapered guide tubes 204. The diameter of the tapered guide tubes 204 gradually decreases from top to bottom. The steel spring 102 is fixedly connected to the bottom of the base 103 around the perimeter. The base plate 101 is fixedly connected to the lower end of the steel spring 102. A receiving bucket 108 is placed inside the base 103. The top of the receiving bucket 108 is a downward-facing oblique opening.
[0039] The conical guide tube 204 guides the seeds, ensuring they fall in the center during the screening process. The steel spring 102 supports the bottom of the base 103. The elasticity of the weight block 105 increases the vibration amplitude as it rotates and causes the base 103 to vibrate. The receiving hopper 108 stores the filtered seeds.
[0040] In operation, after seeds are poured into the device through the connecting pipe 203, they are guided by the conical guide pipe 204 and fall onto the top of the screening screen 201. At this time, the vibration motor 104 can be started to drive the eccentric block 105 at the output end to rotate. During the rotation of the eccentric block 105, the eccentric block 105, due to the influence of its own weight offset, will drive the vibration motor 104 and the base 103 to vibrate. During the vibration of the base 103, the first assembly pipe 106, the second assembly pipe 107 and the connecting pipe 203 at its top will also vibrate, thereby causing the screening screen 201 to vibrate and screen the seeds. The seeds pass through the screening screen 201 and are guided by the conical guide tube 204 inside the second assembly tube 107, falling into the receiving bucket 108 for storage. Magnetic impurities such as iron filings and metal fragments in the seeds are attracted to the surface of the magnetic strip 202 by the magnetic force of the magnetic strip 202. After screening, the screening screen 201 can be disassembled and cleaned by removing the bolts connecting the connecting tube 203 to the surface of the screening screen 201. At the same time, by rotating the first assembly tube 106, the first assembly tube 106 is quickly separated from the base 103 under the action of the threaded connection, and the receiving bucket 108 can be taken out, allowing the screened seeds to be processed for the next step.
[0041] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. An agricultural technology seed screening device, characterized in that, include: A screening assembly (100) includes a base plate (101), a steel spring (102), a base (103), a vibrating motor (104), a counterweight (105), a first assembly tube (106), and a second assembly tube (107). The vibrating motor (104) is fixedly connected to the bottom of the base (103), and the counterweight (105) is fixedly connected to the output end of the vibrating motor (104). The first assembly tube (106) is located on the outer side of the top of the base (103), and the second assembly tube (107) is located on the top of the first assembly tube (106). A magnetic suction assembly (200) includes a screening screen (201) bolted to the inside of a second assembly tube (107). A magnetic strip (202) is fixedly installed on the surface of the screening screen (201). The magnetic strip (202) is a long strip magnet made of flexible permanent magnet material. A connecting tube (203) is fixedly installed on the top of the second assembly tube (107).
2. The agricultural seed screening device according to claim 1, characterized in that: The magnetic strip (202) is wound along the central axis of the screening mesh (201) to form an equal pitch spiral structure, and the magnetization direction of the magnetic strip (202) is distributed radially along the spiral.
3. The agricultural seed screening device according to claim 1, characterized in that: The top of the outer side of the base (103) and the bottom of the inner side of the first assembly tube (106) are both provided with threaded sections, and the base (103) and the first assembly tube (106) are threadedly connected.
4. The agricultural seed screening device according to claim 1, characterized in that: The first assembly tube (106), the second assembly tube (107), and the connecting tube (203) are all connected by bolt threads, and can be quickly disassembled when needed.
5. The agricultural seed screening device according to claim 1, characterized in that: The inner sides of the second assembly tube (107) and the connecting tube (203) are both equipped with tapered guide tubes (204), the diameter of which gradually decreases from top to bottom.
6. The agricultural seed screening device according to claim 1, characterized in that: The steel spring (102) is fixedly connected to the bottom of the base (103) around the perimeter, and the base plate (101) is fixedly connected to the lower end of the steel spring (102).
7. The agricultural seed screening device according to claim 1, characterized in that: A receiving bucket (108) is placed inside the base (103), and the top of the receiving bucket (108) is a downward-facing oblique opening.