A multi-layer screen replaceable agricultural seed screening device

Abstract

The utility model discloses a kind of replaceable agricultural seed screening devices of multi-layer screen, it is related to seed screening field, including device main body, the device main body end is equipped with driving assembly, and driving assembly output is equipped with screening frame, the screening frame inside is equipped with for the multistage screening structure of seed multistage screening, the multistage screening structure includes the first screen and second screen being arranged in screening frame inner wall, the first screen end is equipped with first discharge port, and second screen end is equipped with third discharge port, and screening frame end is equipped with third discharge port, the screening frame top is equipped with for the dismounting structure of the replacement of multi-layer screen. The replaceable agricultural seed screening device of multi-layer screen, by setting multistage screening structure, realizes the classification screening of agricultural seed;By setting dismounting structure, the convenient replacement of multi-layer screen is realized, and significantly improve the scope of application and flexibility.

Description

Technical Field

[0001] This utility model relates to the field of seed screening technology, specifically to an agronomic seed screening device with replaceable multi-layer sieves. Background Technology

[0002] In agronomic planting, seed screening is a crucial pretreatment step. Screening removes impurities, damaged seeds, and seeds with unsuitable particle sizes, thereby ensuring the germination rate and uniform growth of seeds after sowing.

[0003] In the prior art, Chinese Patent No. CN221413834U discloses a seed screening device. This seed screening device includes a base, and a support assembly is provided between the screening frame and the base. The support assembly includes an adjusting seat and two rotating rods. The adjusting seat is slidably connected to the inner wall of the base, and the two ends of the rotating rods are rotatably connected to the adjusting seat and the screening frame, respectively. The support assembly is used to support the screening frame and adjust the angle of the screening frame. Under the rotation of the lead screw, the adjusting seat slides along the inner wall of the base. At this time, the adjusting seat pushes the rotating rods to rotate. Under the rotation of the rotating rods, the screening frame is pushed to rotate in the upper connecting frame, thereby changing the angle of the screening frame, thereby changing the falling rate and improving the screening completion rate of seeds. It can screen different seeds.

[0004] Based on the above information, existing screening devices for agronomic seeds, due to the wide range of seed particle sizes, often use single-layer screens, making it difficult to achieve the expected screening accuracy and quality requirements. Furthermore, the screens are mostly fixed connection structures, which prevents them from being flexibly adjusted and replaced according to the differences in seed species and particle size. Therefore, we propose an agronomic seed screening device with replaceable multi-layer screens. Utility Model Content

[0005] The purpose of this invention is to provide a multi-layer replaceable agronomic seed screening device to solve the problem mentioned in the background art that when screening agronomic seeds, due to the wide range of seed particle size distribution, it is difficult to achieve the expected screening accuracy and quality requirements when using a single-layer screen; moreover, the screens are mostly fixed connection structures, which makes it impossible to flexibly adjust and replace the screens according to the differences in the types and particle size of the seeds to be screened.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-layer replaceable sieve agronomic seed screening device, comprising a device body, a driving component at the end of the device body, and a screening frame at the output end of the driving component. The screening frame contains a multi-stage screening structure for multi-stage seed screening. The multi-stage screening structure includes a first sieve and a second sieve disposed on the inner wall of the screening frame. The first sieve has a first discharge port at its end, the second sieve has a second discharge port at its end, and the screening frame has a third discharge port at its end. The top of the screening frame has a disassembly and assembly structure for replacing the multi-layer sieve. The disassembly and assembly structure includes an installation groove formed in the inner wall of the screening frame. A rotating block is rotatably mounted at one end, and a fastening screw is threaded onto the end of the rotating block. A fastening block is rotatably mounted at the bottom end of the fastening screw. The mounting groove is vertically opened on the inner side wall of the screening frame, and two sets of mounting grooves are symmetrically opened. The top of the mounting groove is designed to be open. Two sets of mounting blocks are symmetrically arranged on both sides of the first screen and the second screen. The mounting blocks are slidably connected to the mounting grooves. The rotating blocks and mounting grooves are arranged one-to-one. The fastening screw is located on the top of the mounting block and is perpendicular to the mounting block. The area of ​​the fastening block is smaller than the top area of ​​the mounting block. A pad is provided at the bottom of the fastening block. The pad is made of rubber and its bottom fits against the top of the mounting block. A handle is provided at the top of the fastening screw.

[0007] Furthermore, the screening frame is designed with an overall inclination. Both the first screen and the second screen are adapted to the screening frame, and the first screen and the second screen are stacked on top of each other, with the second screen located between the first screen and the screening frame.

[0008] Furthermore, the aperture of the second screen is smaller than that of the first screen, and the bottom of the screening frame is a closed flat plate design.

[0009] Furthermore, the bottom of the first, second, and third discharge ports are level with the bottom of the first screen, second screen, and screening frame, respectively, and the first, second, and third discharge ports are staggered.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. This multi-layer replaceable screen agronomic seed screening device, through the setting of a multi-stage screening structure consisting of a first screen and a second screen, with the sieve aperture of the second screen being smaller than that of the first screen, combined with the overall inclined screening frame, achieves graded screening of agronomic seeds; it can separate seeds into different grades according to their particle size in one go, while the closed plate design at the bottom of the screening frame can also collect impurities and the smallest particle size seeds, greatly improving screening accuracy and efficiency, effectively meeting the needs of classifying and using seeds of different particle sizes in agronomic planting, and providing a more reliable screening guarantee for ensuring seed germination rate and growth consistency.

[0011] 2. By designing a disassembly and assembly structure, the pain point of fixed screen connections in existing technologies, which make flexible replacement difficult, is solved. When screening seeds of different types and particle sizes, operators only need to turn the handle at the top of the fastening screw to disengage the rubber pad from the screen mounting block, allowing the first or second screen to be removed and replaced by moving it upwards along the mounting groove. During installation, simply slide the mounting block of the new screen into the mounting groove and tighten the handle in the opposite direction to achieve a secure fixation via the rubber pad. This not only makes the replacement process convenient and efficient, but also prevents damage to the screen from tightening pressure, significantly improving the applicability and flexibility of the device and reducing the equipment investment cost for screening different seeds.

[0012] 3. By aligning the bottom surfaces of the first, second, and third discharge ports with the bottom surfaces of the first, second, and third screens and the screening frame, respectively, and employing a staggered distribution design, mixing of seeds of different grades during discharge is effectively prevented. When the inclined screening frame vibrates under the drive component, the seeds after each level of screening can smoothly slide into the corresponding discharge port along the screen surface, eliminating the need for additional manual sorting and reducing subsequent processing steps after screening. Simultaneously, the symmetrically arranged mounting slots and blocks in the disassembly and assembly structure ensure the stability of the screens after installation, preventing screen displacement during vibrating screening, further guaranteeing the stability of the screening process and the accuracy of the screening results, and improving the overall practicality and ease of operation of the device. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the multi-stage screening structure of this utility model; Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a schematic diagram of the structure of the first screen, the second screen, and the mounting block of this utility model; Figure 5 This is a schematic diagram of the screening frame and disassembly structure of this utility model; Figure 6 This is a schematic diagram of the cross-sectional structure of the screening frame of this utility model.

[0014] In the diagram: 1. Main body of the device; 2. Screening frame; 201. Mounting groove; 202. Third discharge port; 3. First screen; 301. First discharge port; 4. Second screen; 401. Second discharge port; 5. Mounting block; 6. Rotating block; 601. Fastening screw; 602. Handle; 7. Fastening block; 701. Pad block. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Example 1: Please refer to Figures 1-6 The present invention provides the following technical solution: a multi-layer replaceable agronomic seed screening device, comprising a device body 1, a drive component at the end of the device body 1, and a screening frame 2 at the output end of the drive component, the screening frame 2 having a multi-stage screening structure for multi-stage screening of seeds inside, the multi-stage screening structure including a first screen 3 and a second screen 4 disposed on the inner wall of the screening frame 2, the first screen 3 having a first discharge port 301 at the end, the second screen 4 having a second discharge port 401202 at the end, and the screening frame 2 having a third discharge port 202 at the end.

[0017] like Figures 1-6 As shown, the screening frame 2 is designed with an overall inclination. The first screen 3 and the second screen 4 are both adapted to the screening frame 2, and the first screen 3 and the second screen 4 are stacked. The second screen 4 is located between the first screen 3 and the screening frame 2. The screen aperture of the second screen 4 is smaller than that of the first screen 3. The bottom of the screening frame 2 is designed as a closed flat plate. The horizontal planes at the bottom of the first discharge port 301, the second discharge port 401 and the third discharge port 202 are respectively flush with the horizontal planes at the bottom of the first screen 3, the second screen 4 and the screening frame 2. The first discharge port 301, the second discharge port 401 and the third discharge port 202 are staggered.

[0018] During operation, the agronomic seeds to be screened enter from the high end of the screening frame 2 and first fall onto the top-level first screen 3. Driven by the drive component, the entire screening frame 2 vibrates. Simultaneously, due to its tilted position, the seeds move from high to low along the screen surface. During this process, seeds and impurities smaller than the mesh size of the first screen 3 pass through the mesh and fall onto the lower-level second screen 4, while larger seeds continue to slide along the first screen 3 and are eventually discharged from the first discharge port 301, which is flush with the first screen 3, completing the first stage of screening. Seeds and impurities falling onto the second screen 4 continue to slide along the screen under the influence of vibration and gravity. As the second screen 4 slides down, because the aperture of the second screen 4 is smaller than that of the first screen 3, only seeds with smaller particle sizes and fine impurities can pass through and fall onto the closed plate at the bottom of the screening rack 2. Seeds with particle sizes between the first and second screens 4 slide along the second screen 4 and are discharged from the second discharge port 401, which is flush with it, thus completing the secondary screening. Finally, the fine impurities and the smallest particles that fall to the bottom of the screening rack 2 slide out along the bottom plate and are discharged from the third discharge port 202. Through multi-stage screening, seeds can be accurately divided into multiple grades according to particle size, significantly improving screening efficiency and accuracy.

[0019] Example 2: Please refer to Figures 1-6 Based on Embodiment 1, a disassembly and assembly structure is also disclosed, the specific structure of which is as follows: The top of the screening frame 2 is provided with a disassembly and assembly structure for replacing the multi-layer screen. The disassembly and assembly structure includes an installation groove 201 opened in the inner side wall of the screening frame 2, a rotating block 6 is rotatably installed at the top of the screening frame 2, and a fastening screw 601 is threadedly installed at the end of the rotating block 6, and a fastening block 7 is rotatably installed at the bottom end of the fastening screw 601. The installation groove 201 is vertically opened in the inner side wall of the screening frame 2, and two sets of installation grooves 201 are symmetrically opened, and the top of the installation groove 201 is... The design features an open screen. Two sets of mounting blocks 5 are symmetrically arranged on both sides of the first screen 3 and the second screen 4. The mounting blocks 5 are slidably connected to the mounting grooves 201. The rotating blocks 6 are arranged in a one-to-one correspondence with the mounting grooves 201. The fastening screws 601 are located on the top of the mounting blocks 5 and are perpendicular to the mounting blocks 5. The area of ​​the fastening blocks 7 is smaller than the top area of ​​the mounting blocks 5. The bottom of the fastening blocks 7 is provided with a pad 701. The pad 701 is made of rubber and its bottom fits against the top of the mounting blocks 5. The top of the fastening screws 601 is provided with a handle 602.

[0020] When the screen needs to be replaced, the operator only needs to turn the handle 602 at the top of the fastening screw 601. Since the fastening screw 601 is threadedly connected to the rotating block 6, the loosening action will cause the fastening screw 601 to drive the fastening block 7 and the rubber pad 701 at the bottom to move upwards until the pad 701 is completely detached from the mounting block 5 of the screen. At this time, the clamping force on the screen is released. Rotate the rotating block 6 so that it is not at the top of the mounting block 5, and the operator can grasp the screen and slide the mounting blocks 5 on both sides upwards along the vertically opened mounting groove 201 to remove it. When installing a new screen or a cleaned screen, the operation is reversed. First, align the mounting blocks 5 on both sides of the screen with the mounting groove 201 on the inner wall of the screening frame 2, and slide them upwards along the groove. Slide the rotating block 6 down until the screen is in place. Then, position the rotating block 6 directly above the mounting block 5. Rotate the handle 602 to move the fastening screw 601 downward, causing the fastening block 7 and the rubber pad 701 to press against the top of the mounting block 5. The rubber pad 701 not only provides sufficient friction to ensure the screen remains stable and does not shift during the screening process with severe vibration, but also acts as a buffer to avoid damage to the screen from rigid contact. The one-to-one correspondence between the rotating block 6 and the mounting groove 201, as well as the symmetrical layout of the mounting groove 201, further ensures the accuracy and stability of the screen installation. The entire replacement process does not require the use of special tools, making the operation simple and efficient, greatly enhancing the flexibility and practicality of the device.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-layer replaceable agronomic seed screening device, comprising a device body (1), wherein a driving component is provided at the end of the device body (1), and a screening frame (2) is provided at the output end of the driving component, characterized in that: The sieving frame (2) is equipped with a multi-stage sieving structure for multi-stage sieving of seeds. The multi-stage sieving structure includes a first screen (3) and a second screen (4) set on the inner wall of the sieving frame (2). The first screen (3) has a first discharge port (301) at its end, and the second screen (4) has a second discharge port (401) at its end. The sieving frame (2) has a third discharge port (202) at its end. The top of the sieving frame (2) is equipped with a disassembly and assembly structure for replacing the multi-stage screens. The disassembly and assembly structure includes an installation groove (201) opened on the inner side wall of the sieving frame (2). A rotating block (6) is rotatably installed on the top of the sieving frame (2), and a fastening screw (601) is threadedly installed on the end of the rotating block (6). A fastening block (7) is rotatably installed on the bottom end of the fastening screw (601). The installation groove (201) The first screen (3) and the second screen (4) are symmetrically provided with two sets of mounting slots (201), and the top of the mounting slots (201) is open. The first screen (3) and the second screen (4) are symmetrically provided with two sets of mounting blocks (5), and the mounting blocks (5) are slidably connected to the mounting slots (201). The rotating block (6) is provided in a one-to-one correspondence with the mounting slots (201). The fastening screw (601) is located on the top of the mounting block (5), and the fastening screw (601) is perpendicular to the mounting block (5). The area of ​​the fastening block (7) is smaller than the top area of ​​the mounting block (5), and the bottom of the fastening block (7) is provided with a pad (701). The pad (701) is made of rubber, and the bottom of the pad (701) is in contact with the top of the mounting block (5). The top of the fastening screw (601) is provided with a handle (602).

2. The agronomic seed screening device with replaceable multi-layer screens according to claim 1, characterized in that: The screening frame (2) is designed with an overall inclination. The first screen (3) and the second screen (4) are both adapted to the screening frame (2). The first screen (3) and the second screen (4) are stacked, and the second screen (4) is located between the first screen (3) and the screening frame (2).

3. The agronomic seed screening device with replaceable multi-layer screens according to claim 1, characterized in that: The aperture of the second screen (4) is smaller than that of the first screen (3), and the bottom of the screening frame (2) is a closed flat plate design.

4. The agronomic seed screening device with replaceable multi-layer screens according to claim 1, characterized in that: The bottom of the first discharge port (301), the second discharge port (401) and the third discharge port (202) are level with the bottom of the first screen (3), the second screen (4) and the screening frame (2), respectively, and the first discharge port (301), the second discharge port (401) and the third discharge port (202) are staggered.

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