Seed screening device with adjustable aperture size for agricultural planting

Abstract

The utility model discloses a seed screening device with an adjustable aperture size for agricultural planting, and relates to the technical field of screening devices. The vibrating screen comprises a screening box, wherein an adjusting mechanism and a vibrating mechanism are arranged on the screening box; the top of the screening box communicates with a discharging pipe with a valve, the adjusting mechanism comprises a circular ring slidably connected to the inner wall of the screening box, a first screening plate is fixedly connected to the inner wall of the circular ring, a second screening plate is slidably connected to the inner wall of the circular ring, and the vibrating mechanism comprises a motor fixedly connected to the outer wall of the screening box. And an output shaft of the motor is fixedly connected with a rotating shaft through a coupling. According to the seed screening device, the adjusting mechanism is arranged, so that the problems that most existing seed screening devices adopt screens with fixed apertures, the apertures of the screens are inconvenient to adjust, only seeds with single specifications can be screened, and when seed varieties need to be replaced or screening standards need to be adjusted, the screens need to be replaced manually, and the operation is tedious and time-consuming are solved.

Description

Technical Field

[0001] This utility model belongs to the technical field of screening devices, and in particular relates to a seed screening device with adjustable aperture size for agricultural planting. Background Technology

[0002] During harvesting and storage, seeds often contain particles of different sizes, including shriveled seeds, broken seeds, impurities, and seeds that do not meet sowing requirements. Screening can remove inferior seeds and retain plump, uniform, high-quality seeds, ensuring that the seed size is consistent at sowing time. This promotes uniform emergence and growth, improving crop survival rate and yield. At the same time, screening can separate seeds of different sizes to meet the specific requirements of different planting methods for seed size. It can also remove impurities such as straw and soil, reduce clogging of sowing machinery, and improve farming efficiency. Therefore, it is necessary to use screening devices to screen seeds.

[0003] However, most existing seed screening devices use screens with fixed apertures, which makes it inconvenient to adjust the aperture of the screen. This results in only being able to screen seeds of a single size. When it is necessary to change the seed variety or adjust the screening criteria, the screen must be replaced manually, which is cumbersome and time-consuming. Utility Model Content

[0004] The purpose of this invention is to provide a seed screening device with adjustable aperture size for agricultural planting. By setting an adjustment mechanism, it solves the problem that existing seed screening devices mostly use screens with fixed aperture, which is not convenient for adjusting the aperture size of the screen. This results in the ability to screen only seeds of a single size. When it is necessary to change the seed variety or adjust the screening criteria, the screen needs to be replaced manually, which is cumbersome and time-consuming.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a seed sieving device with adjustable aperture size for agricultural planting, including a sieving box, on which an adjustment mechanism and a vibration mechanism are provided;

[0007] The top of the screening box is connected to a discharge pipe with a valve. The adjustment mechanism includes a ring slidably connected to the inner wall of the screening box. A first screen plate is fixedly connected to the inner wall of the ring, and a second screen plate is slidably connected to the inner wall of the ring. The vibration mechanism includes a motor fixedly connected to the outer wall of the screening box. The output shaft of the motor is fixedly connected to a rotating shaft through a coupling. The left side of the rotating shaft extends into the screening box.

[0008] Furthermore, the top of the first sieve plate is provided with several limiting grooves, and the bottom of the second sieve plate is fixedly connected with several limiting blocks, the side of the several limiting blocks away from the second sieve plate being adapted to the several limiting grooves respectively.

[0009] Furthermore, the top of the second sieve plate is provided with an annular groove, and a number of sliders are slidably connected to the inner wall of the annular groove. The top of each slider is fixedly connected to a sliding rod, the top of each sliding rod passes through the ring, and the sliding rods are slidably connected to the ring.

[0010] Furthermore, springs are fitted on the outer walls of several sliding rods, the tops of several springs are fixedly connected to rings, the bottoms of several springs are fixedly connected to several sliders, a baffle is fixedly connected to the top of the second sieve plate, and a pull rod is fixedly connected to the top of the second sieve plate.

[0011] Furthermore, a cam is fixedly connected to the outer wall of the rotating shaft, and a collision block is fixedly connected to the bottom of the first sieve plate, with the cam and the collision block being adapted to each other.

[0012] Furthermore, a plurality of U-shaped support plates are fixedly connected to the inner wall of the screening box, and a spring telescopic rod is fixedly connected to the top of each of the U-shaped support plates, and the top of each of the spring telescopic rods is fixedly connected to a circular ring.

[0013] This utility model has the following beneficial effects:

[0014] 1. By setting an adjustment mechanism, when it is necessary to adjust the aperture of the device, the pull rod can be pulled to move the second sieve plate upward until the limit block disengages from the limit groove. Then, the pull rod can be turned to rotate the second sieve plate until the gap between the sieve holes on the first and second sieve plates matches the required gap, thus completing the adjustment of the aperture of the device. During this process, as the second sieve plate moves upward, the slider will also move the sliding rod upward and compress the spring to generate elastic force. After the adjustment is completed, the pull rod can be released, the spring will release the elastic force, and push the limit block on the second sieve plate into the limit groove to complete the reset. It can adapt to the screening needs of different varieties of seeds without replacing the sieve. During the operation, the spring force and the limit structure work together to ensure the flexibility of adjustment and lock the aperture through automatic reset, which improves the applicability and adjustment accuracy of the screening device, reduces the tedious operation of manually replacing the sieve, and shortens the equipment adjustment time.

[0015] 2. After adjusting the aperture by setting up a vibration mechanism, the seeds to be screened can be poured into the screening box. The seeds will fall onto the second screen plate. Then, the motor is started, which drives the cam to rotate through the shaft. When the cam's protrusion contacts the collision block, the first screen plate moves upward under the connection of the collision block as it rotates. During this process, the spring telescopic rod is stretched as the first screen plate moves upward, generating tension. As it rotates, when the cam's protrusion disengages from the collision block, the spring telescopic rod releases the tension, pulling the first screen plate downward to reset. This reciprocating motion generates vibration, completing the screening of the seeds. This effectively prevents seeds from accumulating on the screen, promotes rapid passage of seeds through the screen holes, and improves screening efficiency. During vibration, the seeds tumble continuously due to the force, reducing mutual compression and blockage between particles, ensuring that seeds of different sizes can be separated according to the screen hole size.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a partial cross-sectional view of the vibration mechanism of this utility model.

[0020] Figure 3 This is a partial cross-sectional view of the adjustment mechanism of this utility model;

[0021] Figure 4 This is an exploded view of the adjusting mechanism of this utility model;

[0022] Figure 5 This utility model Figure 3 A magnified structural diagram of A in the middle;

[0023] Figure 6 This utility model Figure 2 A magnified structural diagram of B in the diagram.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Screening box; 101. Discharge pipe with valve; 2. Adjustment mechanism; 211. Ring; 212. Screen plate one; 213. Screen plate two; 214. Limiting groove; 215. Limiting block; 216. Annular chute; 217. Sliding block; 218. Sliding rod; 219. Spring; 220. Baffle; 221. Pull rod; 3. Vibration mechanism; 311. Motor; 312. Rotating shaft; 313. Cam; 314. Collision block; 315. U-shaped support plate; 316. Spring telescopic rod. Detailed Implementation

[0026] 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.

[0027] Please see Figure 1-6 As shown, this utility model is a seed screening device with adjustable aperture size for agricultural planting, including a screening box 1, an adjustment mechanism 2 and a vibration mechanism 3 on the screening box 1, and a discharge pipe 101 with a valve connected to the top of the screening box 1.

[0028] The adjusting mechanism 2 includes a ring 211 slidably connected to the inner wall of the screening box 1. A first screen plate 212 is fixedly connected to the inner wall of the ring 211, and a second screen plate 213 is slidably connected to the inner wall of the ring 211. The top of the first screen plate 212 has several limiting grooves 214, and the bottom of the second screen plate 213 has several limiting blocks 215 fixedly connected. The side of each limiting block 215 away from the second screen plate 213 is respectively adapted to the limiting grooves 214. The top of the second screen plate 213 has an annular sliding groove 216, and the inner wall of the annular sliding groove 216 has several sliders 217 slidably connected. The top of each slider 217 is fixedly connected to a sliding rod 218, and the top of each sliding rod 218 passes through the ring 211. All 18 are slidably connected to the ring 211. Springs 219 are fitted on the outer walls of several sliding rods 218. The tops of several springs 219 are fixedly connected to the ring 211. The bottoms of several springs 219 are fixedly connected to several sliders 217. A baffle 220 is fixedly connected to the top of the second sieve plate 213. A pull rod 221 is fixedly connected to the top of the second sieve plate 213. By setting the adjustment mechanism 2, it can adapt to the screening needs of different varieties of seeds without replacing the sieve. During operation, the elasticity of the springs 219 and the limiting structure cooperate to ensure the flexibility of adjustment and lock the aperture through automatic reset, which improves the applicability and adjustment accuracy of the screening device, reduces the tedious operation of manually replacing the sieve, and shortens the equipment adjustment time.

[0029] The vibration mechanism 3 includes a motor 311 fixedly connected to the outer wall of the screening box 1. The output shaft of the motor 311 is fixedly connected to a rotating shaft 312 via a coupling. The left side of the rotating shaft 312 extends into the screening box 1. A cam 313 is fixedly connected to the outer wall of the rotating shaft 312. A collision block 314 is fixedly connected to the bottom of the screen plate 212. The cam 313 and the collision block 314 are compatible. Several U-shaped support plates 315 are fixedly connected to the inner wall of the screening box 1. A spring telescopic rod 316 is fixedly connected to the top of each of the U-shaped support plates 315. The top of each of the spring telescopic rods 316 is fixedly connected to a ring 211. By setting the vibration mechanism 3, seeds can be effectively prevented from accumulating on the screen, and seeds can be quickly passed through the screen holes, thus improving screening efficiency. During the vibration process, the seeds are constantly tumbling due to the force, which can reduce the mutual compression and blockage between particles and ensure that seeds of different sizes can be separated according to the screen hole size.

[0030] A specific application of this embodiment is as follows: In use, first pull the lever 221 to move the second sieve plate 213 upwards until the limiting block 215 disengages from the limiting groove 214. Then, turn the lever 221 to rotate the second sieve plate 213 until the gap between the sieve holes on the first sieve plate 212 and the second sieve plate 213 matches the required gap, thus adjusting the aperture of the device. During this process, as the second sieve plate 213 moves upwards, the slider 217 also moves the slider 218 upwards, compressing the spring 219 and generating elastic force. After adjustment, release the lever 221, and the spring 219 releases its elastic force, pushing the limiting block 215 on the second sieve plate 213 into the limiting groove 214, completing the reset. After adjusting the aperture, the seeds to be sieved can be poured into the sieve box 1, where they will fall onto the second sieve plate 213. Then, start the motor 311 to allow the seeds to pass through... The rotating shaft 312 drives the cam 313 to rotate. When the protruding part of the cam 313 contacts the collision block 314, the first sieve plate 212 moves upward under the connection of the collision block 314 as the rotation continues. During this process, the spring telescopic rod 316 is stretched as the first sieve plate 212 moves upward and generates tension. As the rotation continues, when the protruding part of the cam 313 disengages from the collision block 314, the spring telescopic rod 316 releases tension and pulls the first sieve plate 212 downward to complete the reset. This reciprocating motion generates vibration to complete the sieving of seeds. As sieving proceeds, smaller seeds fall to the bottom of the sieving box 1, while larger seeds remain on the second sieve plate 213. After sieving is completed, the valve on the discharge pipe 101 with valve is opened to allow the smaller seeds to flow out of the device and be collected. Then, the larger seeds on the second sieve plate 213 can be removed.

[0031] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A seed sieving device with adjustable aperture size for agricultural planting, characterized in that: Includes a screening box (1), on which an adjustment mechanism (2) and a vibration mechanism (3) are provided; The top of the screening box (1) is connected to a discharge pipe (101) with a valve. The adjustment mechanism (2) includes a ring (211) slidably connected to the inner wall of the screening box (1). A screen plate (212) is fixedly connected to the inner wall of the ring (211). A screen plate (213) is slidably connected to the inner wall of the ring (211). The vibration mechanism (3) includes a motor (311) fixedly connected to the outer wall of the screening box (1). The output shaft of the motor (311) is fixedly connected to a rotating shaft (312) through a coupling. The left side of the rotating shaft (312) extends into the screening box (1).

2. The seed sieving device with adjustable aperture size for agricultural planting according to claim 1, characterized in that, The top of the first sieve plate (212) is provided with several limiting grooves (214), and the bottom of the second sieve plate (213) is fixedly connected with several limiting blocks (215). The side of the several limiting blocks (215) away from the second sieve plate (213) is respectively adapted to the several limiting grooves (214).

3. The seed sieving device with adjustable aperture size for agricultural planting according to claim 2, characterized in that, The top of the second sieve plate (213) is provided with an annular groove (216), and a number of sliders (217) are slidably connected on the inner wall of the annular groove (216).

4. The seed sieving device with adjustable aperture size for agricultural planting according to claim 3, characterized in that, Each of the sliders (217) has a slide rod (218) fixedly connected to its top, and the top of each slide rod (218) passes through a ring (211). Each slide rod (218) is slidably connected to the ring (211).

5. A seed sieving device with adjustable aperture size for agricultural planting according to claim 4, characterized in that, A spring (219) is fitted on the outer wall of each of the sliding rods (218). The top of each of the springs (219) is fixedly connected to a ring (211), and the bottom of each of the springs (219) is fixedly connected to a slider (217).

6. A seed sieving device with adjustable aperture size for agricultural planting according to claim 5, characterized in that, A baffle (220) is fixedly connected to the top of the second sieve plate (213), and a pull rod (221) is fixedly connected to the top of the second sieve plate (213).

7. A seed sieving device with adjustable aperture size for agricultural planting according to claim 6, characterized in that, A cam (313) is fixedly connected to the outer wall of the rotating shaft (312), and a collision block (314) is fixedly connected to the bottom of the sieve plate (212). The cam (313) and the collision block (314) are adapted to each other.

8. A seed sieving device with adjustable aperture size for agricultural planting according to claim 7, characterized in that, The inner wall of the screening box (1) is fixedly connected with several U-shaped support plates (315), and the top of each of the several U-shaped support plates (315) is fixedly connected with a spring telescopic rod (316), and the top of each of the several spring telescopic rods (316) is fixedly connected with a ring (211).

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