Seed specific gravity screening machine
By designing a seed gravity sorting machine and utilizing a combination of a vibrating motor and a blower fan, the problem of poor gravity separation in seed sorting was solved, thus improving the efficiency and quality of seed sorting.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GANSU LONGSHENG SEED CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-05-26
AI Technical Summary
Existing seed screening technologies are unable to efficiently separate seeds with different specific gravities, resulting in poor screening results and affecting germination rate and crop yield.
Design a seed gravity sorting machine that uses a combination of a sliding device, a sorting device and a collecting device. It uses a vibrating motor and a blower to separate the seeds, and uses vibration and air force to separate and collect seeds with different specific gravities.
It enables efficient separation of seeds with different specific gravities, improves germination rate and crop yield, and ensures seed quality and sorting accuracy.
Smart Images
Figure CN224272165U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of seed screening technology, specifically a seed gravity screening machine. Background Technology
[0002] Seed screening is a crucial step in agricultural production to ensure sowing quality by eliminating inferior seeds, improving germination rates, and increasing crop yields. The purposes of seed screening are: removing impurities such as straw, mud, broken seeds, and moldy seeds; improving germination rates by selecting plump, healthy seeds to ensure uniform seedling emergence; controlling pests and diseases by removing diseased or insect-infested seeds to reduce the risk of disease in the field; and enhancing crop quality by selecting high-quality seeds to ensure uniform plant growth and strong resistance to adverse conditions.
[0003] In existing technologies, seeds with lower specific gravity can be shaken during seed screening to achieve separation. To achieve this, we propose a seed specific gravity screening machine. Utility Model Content
[0004] The purpose of this invention is to provide a seed gravity screening machine to solve the problems existing in the prior art as described in the background section.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A seed gravity screening machine includes a device box, a side groove extending through the side wall of the device box, a screening box disposed within the side groove, the screening box being connected to the inner wall of the device box via a sliding device, a screening trough extending through the screening box, a feed pipe extending through the top of the screening trough, the upper end of the feed pipe being slidably connected to the upper end of the device box, a screening device being fixedly connected to the inner wall of the screening trough, and a collection device disposed on one side of the device box.
[0007] Preferably, the sliding device includes two sliding rods fixedly connected to the inside of the device box, and two sliding grooves are provided through the side wall of the screening box. The two sliding rods are slidably connected in the two sliding grooves respectively, and the two sliding rods are connected to the two sliding grooves by springs.
[0008] Preferably, the screening device includes a fixing plate fixedly connected to the inner wall of the screening tank. Two openings are provided through the side wall of the fixing plate, and the two openings are vertically aligned. A first feeding plate is fixedly connected to the upper opening, and a second feeding plate is fixedly connected to the lower opening. A blower fan is fixedly connected to the inner wall of the screening tank at the corresponding position, and the position of the blower fan corresponds to the position of the upper opening. A vibration motor is fixedly connected to the lower end of the screening box at the corresponding position.
[0009] Preferably, the collection device includes two columns fixedly connected to the ground, each column having a placement plate fixedly connected to its upper end, a collection box placed at the upper end of each placement plate, and a collection trough extending through the upper end of each collection box.
[0010] Preferably, the first feeding plate is longer than the second feeding plate.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] In this invention, by setting up a sliding device, a screening device and a collecting device to work together, the screening box can be vibrated inside the device box by a vibration motor and two sliding rods, which can drive the seeds with a smaller specific gravity to shake. The seeds that are shaken up move to the position of the blower fan. The wind force output by the blower fan can blow the seeds with a smaller specific gravity to the corresponding opening and be transported to the outside through the first discharge plate. The remaining seeds with a larger specific gravity can be discharged through the second discharge plate. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of a seed gravity screening machine proposed in this utility model;
[0014] Figure 2 This is a cross-sectional view of the screening box of a seed gravity screening machine proposed in this utility model;
[0015] Figure 3 This is a schematic diagram showing the connection between the slide bar and the screening box of a seed specific gravity screening machine proposed in this utility model.
[0016] In the diagram: 1. Device box, 2. Feed pipe, 3. Slide bar, 4. Screening box, 5. Vibration motor, 6. First feeding plate, 7. Second feeding plate, 8. Column, 9. Placement plate, 10. Collection box, 11. Blower fan, 12. Fixing plate, 13. Spring, 14. Feed pipe. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0018] Reference Figure 1-3A seed specific gravity screening machine includes a device box 1. A side groove is provided through the side wall of the device box 1, and the edges of the side groove are chamfered to prevent scratching operators. A screening box 4 is installed inside the side groove to extend its service life. The screening box 4 is connected to the inner wall of the device box 1 via a sliding device. A lubricating oil groove is provided at the sliding connection to ensure smooth operation. The sliding device includes two sliding rods 3 fixedly connected inside the device box 1. The surfaces of the sliding rods 3 are chrome-plated to improve wear resistance. Two sliding grooves are provided through the side wall of the screening box 4, and high-polymer wear-resistant bushings are embedded in the grooves to reduce friction loss. The two sliding rods 3 are slidably connected in the two sliding grooves respectively. The fit tolerance between the sliding rods 3 and the sliding grooves is controlled within ±0.02mm to ensure motion accuracy. Both sliding rods 3 and the two sliding grooves are connected by springs 13. The springs 13 are made of high-carbon steel and have a stable elastic coefficient.
[0019] The screening box 4 has a screening trough running through it. The inner surface of the screening trough is polished to Ra0.8 smoothness to reduce seed residue. A feed pipe 2 runs through the top of the screening trough. The feed pipe 2 is detachable for easy cleaning and maintenance. The upper end of the feed pipe 2 is slidably connected to the upper end of the device box 1. A sealing rubber ring is installed at the connection to prevent dust from entering. A screening device is fixedly connected to the inner wall of the screening trough. The screening device can be quickly replaced to adapt to different seed types. The screening device includes a fixing plate 12 fixedly connected to the inner wall of the screening trough. The fixing plate 12 is 5mm thick to ensure structural strength. The side wall of the fixing plate 12 is penetrated... The system features two openings with rounded edges to protect seed integrity. The two openings are vertically aligned, with a center-to-center distance of 15cm, creating a reasonable sorting distance. A first feed plate 6 is fixedly connected to the upper opening, and a second feed plate 7 is fixedly connected to the lower opening. A blower fan 11, driven by a variable frequency motor, is fixedly connected to the inner wall of the corresponding screening tank. The blower fan 11 is infinitely adjustable in speed. Its position corresponds to the upper opening, with the outlet 10cm away to create an optimal airflow field. A vibration motor 5 is fixedly connected to the side wall of the corresponding screening box 4. The vibration motor 5 is equipped with a speed controller for precise adjustment of the vibration frequency.
[0020] Specifically, a collection device is installed on one side of the device box 1, maintaining a 50cm working space between the collection device and the device box 1, which conforms to ergonomics. The collection device includes two uprights 8 fixedly connected to the ground. The bottom of the uprights 8 has expansion bolt mounting holes to ensure stability. The upper end of each of the two uprights 8 is fixedly connected to a placement plate 9. The surface of the placement plate 9 has an anti-slip texture to prevent the collection box from shifting. A collection box 10 is placed on the upper end of each of the two placement plates 9. The collection box 10 is made of transparent polyethylene material, making it easy to observe the collection situation. A collection trough is provided through the upper end of each of the two collection boxes 10. The edge of the collection trough has guide ribs to guide the seeds to fall accurately.
[0021] It is worth mentioning that the first feeding plate 6 is longer than the second feeding plate 7, with the first feeding plate being 60cm long and the second feeding plate being 40cm long, forming a stepped sorting structure. This differentiated design can better distinguish seeds with different specific gravities and improve sorting accuracy. The lower end of the screening box 4 is fixedly connected to the feeding pipe 14, and an electrically controlled valve is installed on the side wall of the feeding pipe 14. The feeding pipe 14 and the device box 1 are in a relative sliding relationship.
[0022] In this invention, the operator adds the seeds to be screened into the screening box 4 inside the device box 1 through the feed pipe 2. Then, the corresponding vibration motor 5 and blower fan 11 are started by the driver in the prior art. The vibration motor 5 can make the lighter seeds shake and fly up. The corresponding blower fan 11 can blow the fly-up lighter seeds into the opening on one side and finally discharge them through the first discharge plate 6. Some heavier seeds will remain and eventually be discharged through the second discharge plate 7 or directly through the discharge pipe 14.
[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A seed gravity screening machine, comprising a device box (1), characterized in that, A side groove is provided through the side wall of the device box (1), and a screening box (4) is provided in the side groove. The screening box (4) is connected to the inner wall of the device box (1) through a sliding device. A screening trough is provided through the screening box (4). A feed pipe (2) is provided through the top of the screening trough. The upper end of the feed pipe (2) is slidably connected to the upper end of the device box (1). A screening device is fixedly connected to the inner wall of the screening trough. A collection device is provided on one side of the device box (1). A discharge pipe (14) is fixedly connected to the lower end of the screening box (4). An electrically controlled valve is provided on the side wall of the discharge pipe (14).
2. The seed gravity screening machine according to claim 1, characterized in that, The sliding device includes two sliding rods (3) fixedly connected inside the device box (1). Two sliding grooves are provided through the side wall of the screening box (4). The two sliding rods (3) are slidably connected in the two sliding grooves respectively. The two sliding rods (3) are connected to the two sliding grooves by springs (13).
3. The seed gravity screening machine according to claim 1, characterized in that, The screening device includes a fixed plate (12) fixedly connected to the inner wall of the screening tank. Two openings are provided through the side wall of the fixed plate (12). The two openings are vertically aligned. A first feeding plate (6) is fixedly connected to the upper opening, and a second feeding plate (7) is fixedly connected to the lower opening. A blower fan (11) is fixedly connected to the inner wall of the screening tank at the corresponding position. The position of the blower fan (11) corresponds to the position of the upper opening. A vibration motor (5) is fixedly connected to the side wall of the screening box (4) at the corresponding position.
4. A seed gravity screening machine according to claim 1, characterized in that, The collection device includes two columns (8) fixedly connected to the ground. The upper ends of the two columns (8) are fixedly connected to a placement plate (9). A collection box (10) is placed at the upper end of the two placement plates (9). A collection trough is provided through the upper end of the two collection boxes (10).
5. A seed gravity screening machine according to claim 3, characterized in that, The first feed plate (6) is longer than the second feed plate (7).