Tobacco seed sorting machine

Abstract

The utility model relates to the technical field of tobacco seed sorting, and discloses a tobacco seed sorting machine which comprises a winnowing box, a blanking hopper, a discharging hopper and a negative pressure fan. The discharging hopper is arranged at the top of the winnowing box and communicates with the winnowing box, so that tobacco seeds needing to be winnowed are guided into the winnowing box through the discharging hopper; the discharging hoppers are uniformly arranged at the bottom of the winnowing box at intervals; the negative pressure fan can be used for generating negative pressure so as to form suction force on the tobacco seeds in the winnowing box, so that the tobacco seeds are driven to transversely move in the winnowing box; the tobacco seeds of different weights are different in transverse movement distance while falling, and then the tobacco seeds can fall into different discharging hoppers, so that sorting of the tobacco seeds is achieved. Through the arrangement, the tobacco seeds can be quickly and effectively sorted.

Description

Technical Field

[0001] This utility model relates to the field of tobacco seed sorting technology, and in particular to a tobacco seed sorting machine. Background Technology

[0002] In recent years, the low level of mechanization in the traditional tobacco seed production model has led to excessive labor intensity and low work efficiency, negatively impacting the overall efficiency of seed production. Looking at the entire tobacco seed production process, while land preparation, irrigation, fertilization, and plant protection have achieved initial mechanization or facility-based systems based on successful tobacco leaf production experience, the unique aspects of seed production, which also account for the largest share of labor demand, such as field pollination, pollen collection, anther threshing, capsule harvesting, and seed screening and grading, remain primarily traditional manual operations, severely hindering the technological upgrading of the tobacco seed production industry. Utility Model Content

[0003] The present invention aims to provide a tobacco seed sorting machine to solve the technical problems raised in the prior art.

[0004] The technical problem solved by this utility model embodiment is addressed by the following technical solution:

[0005] A tobacco seed sorting machine is provided, comprising:

[0006] Air separator;

[0007] A feeding hopper is provided on top of the air separator and is connected to the air separator to guide tobacco seeds that need to be air separated into the air separator.

[0008] The discharge hoppers are evenly spaced at the bottom of the air separator.

[0009] A negative pressure fan, which can be used to generate negative pressure to create suction on the tobacco seeds in the air separator, so as to drive the tobacco seeds to move laterally in the air separator;

[0010] In this process, tobacco seeds of different weights move laterally at different distances as they fall, thus falling into different discharge hoppers to achieve the sorting of tobacco seeds.

[0011] In some embodiments, the hopper is provided with a distribution port, and multiple distribution ports are evenly spaced apart in the hopper.

[0012] In some embodiments, a linear vibrator is provided at the bottom of the hopper, and the two ends of the linear vibrator are respectively connected to the dispensing port and the air classifier. The linear vibrator is used to transport the seeds falling through the dispensing port into the air classifier.

[0013] In some embodiments, a flow guiding device is provided at one end of the linear vibrator connected to the air separator box, which can divert tobacco seeds to enter the air separator box evenly.

[0014] In some embodiments, a pressure stabilizing air box is also included, which is disposed at the bottom of the hopper and communicates with the air classifier to stabilize the air field inside the air classifier.

[0015] In some embodiments, the side of the pressure stabilizing air box is provided with an air outlet, and a screen is provided on the air outlet to stabilize the wind field.

[0016] In some embodiments, observation windows are embedded on both sides of the air separator to observe the air separation of tobacco seeds inside the air separator.

[0017] In some embodiments, the discharge hopper is provided with a partition plate.

[0018] Compared with the prior art, the tobacco seed sorting machine provided in this embodiment includes an air-separating box, a feeding hopper, a discharging hopper, and a negative pressure fan. The feeding hopper is located at the top of the air-separating box and communicates with it, allowing tobacco seeds requiring air separation to be fed into the air-separating box. The discharging hoppers are evenly spaced at the bottom of the air-separating box. The negative pressure fan generates negative pressure, creating suction on the tobacco seeds within the air-separating box, causing them to move laterally. Tobacco seeds of different weights move laterally at different distances upon falling, thus falling into different discharging hoppers for sorting. This configuration enables rapid and efficient sorting of tobacco seeds. Attached Figure Description

[0019] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0020] Figure 1 This is a schematic diagram of the structure of a tobacco seed sorting machine provided in one embodiment of the present invention;

[0021] Figure 2 This is a side view of a tobacco seed sorting machine provided in one embodiment of the present invention.

[0022] Figure label:

[0023] 100. Tobacco seed sorting machine; 10. Air classifier box; 11. Observation window; 20. Feed hopper; 30. Discharge hopper; 40. Negative pressure fan; 50. Linear vibrator; 60. Pressure stabilizing air box; 61. Air outlet; 62. Screen. Detailed Implementation

[0024] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "connected" to another element, it can be directly on the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "left," "right," "upper end," "lower end," "top," and "bottom," etc., used in this specification, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention.

[0026] The following is combined with Figure 1 and Figure 2 The tobacco seed sorting machine provided in this application will be described in detail through specific embodiments.

[0027] Please refer to the following: Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of a tobacco seed sorting machine provided in one embodiment of the present invention; Figure 2This is a side view of a tobacco seed sorting machine provided in one embodiment of the present invention. The tobacco seed sorting machine 100 provided in one embodiment of the present invention includes an air-separating box 10, a feeding hopper 20, a discharging hopper 30, and a negative pressure fan 40. The feeding hopper 20 is disposed at the top of the air-separating box 10 and communicates with it, so as to guide the tobacco seeds to be air-separated into the air-separating box 10 through the feeding hopper 20; the discharging hoppers 30 are evenly spaced at the bottom of the air-separating box 10; the negative pressure fan 40 can be used to generate negative pressure to create suction on the tobacco seeds in the air-separating box 10, thereby driving the tobacco seeds to move laterally within the air-separating box 10; wherein, tobacco seeds of different weights move laterally at different distances upon falling, and thus fall into different discharging hoppers 30, thereby achieving the sorting of tobacco seeds.

[0028] Tobacco seeds enter the air classifier 10 through the feed hopper 20. At this time, the negative pressure fan 40 starts working, creating a negative pressure environment inside the air classifier 10. Due to the negative pressure, the air inside the box creates a suction force. As the tobacco seeds begin to fall under gravity, this suction force exerts a lateral force on the seeds. The lateral force varies depending on the weight of the tobacco seeds. According to Newton's second law (where is force, is mass, and is acceleration), under the same suction force (lateral force), seeds with smaller mass have a greater acceleration, and seeds with larger mass have a smaller acceleration. In the same falling time, seeds with greater acceleration will travel a greater lateral distance. Because seeds of different weights travel different lateral distances, they fall into the discharge hoppers 30, which are spaced at different intervals at the bottom of the air classifier 10. Lighter seeds move a greater lateral distance and fall into the discharge hopper 30, which is farther from the seed inlet (below the seed inlet hopper 20); heavier seeds move a shorter lateral distance and fall into the discharge hopper 30, which is closer to the seed inlet, thus achieving seed sorting. This setup allows for rapid and efficient seed sorting. Utilizing simple physical principles (gravity and lateral suction), it sorts seeds based on their weight differences, eliminating the need for manual sorting and significantly improving efficiency. For example, in large-scale tobacco cultivation, it can process large quantities of seeds in a short time to meet planting needs.

[0029] In some embodiments, the hopper 20 has multiple distribution ports evenly spaced apart. When tobacco seeds enter the air separator 10 from the hopper 20, the multiple evenly spaced distribution ports allow the seeds to enter the air separator 10 more evenly. If there is only one distribution port, the seeds may concentrate in a certain area of ​​the air separator 10, resulting in excessively high seed density in that area. This evenly distributed seed falling method allows the suction force generated by the negative pressure fan 40 to act more effectively on each seed. For example, during air separation, each seed can be more fully affected by the lateral suction force, thereby improving the sorting accuracy. If the seeds are unevenly distributed, they may collide and pile up in densely populated areas, affecting the lateral movement of the seeds and thus reducing the sorting accuracy.

[0030] In some embodiments, a linear vibrator 50 is provided at the bottom of the hopper 20. The two ends of the linear vibrator 50 are respectively connected to the dispensing port and the air classifier 10. The linear vibrator 50 is used to convey seeds falling through the dispensing port into the air classifier 10. When tobacco seeds fall from the dispensing port onto the linear vibrator 50, the linear vibrator 50 starts working. It generates linear vibrations, causing the seeds to bounce or slide on the surface of the vibrator.

[0031] The two ends of the linear vibrator 50 are connected to the feed inlet and the air classifier 10, respectively, ensuring that the seeds can smoothly enter the air classifier 10 from the feed inlet through the linear vibrator 50. Under the action of vibration, the seeds are transported into the air classifier 10 in an orderly manner, and due to the presence of vibration, the seeds are dispersed when entering the air classifier 10, and will not pile up together.

[0032] In some embodiments, a flow guiding device is provided at the end of the linear vibrator 50 connected to the air separator 10. This flow guiding device can divert tobacco seeds to ensure they enter the air separator 10 evenly. After the linear vibrator 50 delivers the seeds, the flow guiding device diverts them. It uses multiple diversion channels to allow the seeds to enter the air separator 10 via different paths. This uniform diversion method ensures a more even distribution of seeds within the air separator 10. During air separation, evenly distributed seeds are better subjected to the suction and airflow generated by the negative pressure fan 40, resulting in a more consistent sorting force on each seed. This helps improve sorting accuracy because if seeds concentrate in a certain area before entering the air separator 10, the seeds in that area may interfere with each other, affecting the sorting effect.

[0033] In some embodiments, a pressure stabilizing air box 60 is also included. The pressure stabilizing air box 60 is disposed at the bottom of the hopper 20 and communicates with the air classifier 10, and is used to stabilize the air field in the air classifier 10.

[0034] In the tobacco seed sorting machine 100, air separation is a crucial step that relies on the different forces exerted by the airflow on seeds of different weights to achieve sorting. However, the airflow itself may fluctuate in pressure and velocity. If it directly enters the air separation box 10, the airflow will be unstable. The pressure-stabilizing air box 60 can buffer and regulate the incoming airflow. Through its internal structure and volume characteristics, it smooths out pressure fluctuations in the airflow, keeping the pressure, velocity, and other parameters of the airflow output into the air separation box 10 relatively stable. For example, the airflow, which might normally fluctuate in strength due to slight changes in the fan's operation, can enter the air separation box 10 in a more constant state after passing through the pressure-stabilizing air box 60. A stable airflow ensures that tobacco seeds of different weights can move laterally within the air separation box 10 according to a predetermined pattern, achieving accurate sorting. If the airflow is unstable, seeds of the same weight may move abnormally due to a sudden increase or decrease in airflow strength, ultimately leading to sorting errors and mixing with other types of seeds. By installing a pressure-stabilizing air box 60, the accuracy of sorting can be effectively improved, ensuring that the selected seeds meet the requirements and providing high-quality seeds for subsequent tobacco planting.

[0035] In some embodiments, the pressure-stabilizing air box 60 has an air outlet 61 on its side, and a screen 62 is provided on the air outlet 61 to stabilize the air field. The screen 62 can disperse and homogenize the airflow flowing out of the air outlet 61. A more uniform air field helps to improve the accuracy of tobacco seed sorting. In a uniform and stable air field, tobacco seeds of different weights can move laterally more accurately according to their own characteristics, reducing sorting errors caused by local differences in the air field, and more reliably separating seeds of different qualities, ensuring that the quality of the sorted seeds meets the requirements.

[0036] In some embodiments, observation windows 11 are embedded on both sides of the air separator 10 to observe the air separation of tobacco seeds inside the air separator 10.

[0037] In some embodiments, a partition plate is provided on the discharge hopper 30. This further stabilizes the airflow and ensures proper sorting of tobacco seeds.

[0038] It should be noted that the tobacco seed sorting machine 100 provided in this embodiment of the present invention only shows the part related to the technical problem to be solved by this embodiment of the present invention. It can be understood that the tobacco seed sorting machine 100 provided in this embodiment of the present invention also includes other structures for realizing the function of the tobacco seed sorting machine 100.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; under the concept of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this utility model as described above. For the sake of brevity, they are not provided in detail; although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A tobacco seed sorting machine, characterized in that, include: Air separator; A feeding hopper is provided on top of the air separator and is connected to the air separator to guide tobacco seeds that need to be air separated into the air separator. The discharge hoppers are evenly spaced at the bottom of the air separator. A negative pressure fan, which can be used to generate negative pressure to create suction on the tobacco seeds in the air separator, so as to drive the tobacco seeds to move laterally in the air separator; Among them, tobacco seeds of different weights move laterally a different distance as they fall, and thus fall into different discharge hoppers to achieve the sorting of tobacco seeds; It also includes a pressure stabilizing air box, which is located at the bottom of the hopper and is connected to the air classifier box to stabilize the air field inside the air classifier box. The pressure stabilizing air box has an air outlet on its side, and a screen is installed on the air outlet to stabilize the wind field.

2. The tobacco seed sorting machine according to claim 1, characterized in that, The hopper is provided with a distribution port, and multiple distribution ports are evenly spaced apart in the hopper.

3. The tobacco seed sorting machine according to claim 2, characterized in that, A linear vibrator is installed at the bottom of the feeding hopper. The two ends of the linear vibrator are respectively connected to the distributing port and the air classifier. The linear vibrator is used to transport the seeds falling through the distributing port into the air classifier.

4. The tobacco seed sorting machine according to claim 3, characterized in that, The linear vibrator is connected to the air separator at one end, and a flow guiding device is provided thereon. The flow guiding device can divert the tobacco seeds so that they can enter the air separator evenly.

5. The tobacco seed sorting machine according to claim 4, characterized in that, The air separator is equipped with observation windows on both sides for observing the air separation of tobacco seeds inside the air separator.

6. The tobacco seed sorting machine according to claim 5, characterized in that, The discharge hopper is equipped with a partition plate.

Images