Adjustable air duct structure of winnowing type seed classificator

Abstract

The utility model relates to the technical field of seed sorting, in particular to an adjustable air duct structure of a winnowing type seed sorting machine, a multi-gear fan is hermetically connected to the left end of the interior of an air duct, a splitter plate is fixedly connected to the right side of the interior of the air duct, and an adjusting screw is spirally connected to the middle of the upper end of the air duct. According to the device, blowing is carried out under the action of the multi-gear draught fan, the air speed in the fine selection box is more uniform after air flow passes through the splitter plate, the adjusting screw rod can rotate through rotation of the rotary disc, and therefore the air speed fine adjustment plate is driven to move up and down; the size of an exhaust outlet of a flow dividing opening in the flow dividing plate can be adjusted, the winnowing air speed of different seeds can be adjusted in cooperation with gear adjustment of the multi-gear draught fan, the adjusting position can be accurately observed from the outside through the effect of an observation pipe and a limiting hole rod, and seed sorting is more accurate.

Description

Technical Field

[0001] This utility model relates to an adjustable air duct structure for an air-selection type seed sorting machine, belonging to the field of seed sorting technology. Background Technology

[0002] A wind-separated seed separator is a device that uses the principle of wind separation to separate seeds from impurities. It separates seeds from impurities based on the density difference caused by airflow. A wind-separated seed separator typically includes a feed hopper, a wind separation chamber, and a collection trough. During operation, seeds and impurities are separated by airflow. Seeds with higher density settle at a higher velocity and travel a shorter distance, while seeds with lower density settle at a lower velocity and travel a longer distance.

[0003] The existing patent number CN221657177U describes a wind-selection type seed sorting and processing device. This device uses a wind-selection fan to sort seeds entering the wind-selection box, thus performing preliminary screening of impurities such as leaves mixed in with the seeds. Simultaneously, the impurities are discharged through a discharge pipe. A connecting rod, driven by the rotation of an eccentric disc, causes the sieve plate to vibrate. With the cooperation of four elastic plates, the sieve plate automatically resets, thus vibrating and screening the seeds on the sieve plate. This further removes particles of soil and stones from the seeds and separates unqualified small seeds, thereby improving the seed sorting process. However, the wind-selection fan in this device does not have a wind... The existing fan, while capable of adjusting airflow, produces a dispersed airflow, resulting in seeds of varying sizes after air separation. Furthermore, different crop seeds require different airflow levels, impacting the separation efficiency. Although the device can temporarily store separated seeds, its limited internal storage space necessitates removal after a period of air separation, hindering continuous seed separation, reducing efficiency, and exposing dust and debris to pollute the environment. This makes it unsuitable for environmentally friendly new air separation systems for large-scale seed production. Utility Model Content

[0004] The purpose of this invention is to provide an adjustable air duct structure for a wind-selection seed sorting machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An adjustable air duct structure for an air-separated seed sorting machine includes a sorting box, a discharge frame, and a feed hopper. An air duct is sealed to the upper left end of the sorting box. A multi-speed fan is sealed to the left end of the air duct. A flow divider is fixedly connected to the right side of the air duct. An adjusting screw is spirally connected to the middle of the upper end of the air duct. A wind speed fine-tuning plate is rotatably connected to the lower end of the adjusting screw. The wind speed fine-tuning plate is slidably connected to both the air duct and the flow divider. A sorting channel is opened on the lower side of the interior of the sorting box. A feeding impeller is rotatably connected inside the sorting channel. A discharge frame is sealed to the lower front face of the sorting box. The internal channel of the discharge frame communicates with the sorting channel. An exhaust frame is fixedly connected to the upper right end of the sorting box.

[0007] Furthermore, a feed hopper is fixedly connected to the upper left side of the selection box.

[0008] Furthermore, a turntable is fixedly connected to the upper end of the adjusting screw.

[0009] Furthermore, observation tubes are sealed and connected to the front and rear sides of the upper end of the air duct. Limiting hole rods are slidably connected inside the observation tubes. The limiting hole rods are fixedly connected to the wind speed fine adjustment plate. Synchronous adjustment holes are opened on the inner sides of both the observation tubes and the limiting hole rods.

[0010] Furthermore, there are four feeding impellers. The rear end of the feeding impeller located at the right end is equipped with a motor, which is fixedly connected to the selection box. A pulley group is rotatably connected to the upper front end of the selection box, and the inner drive wheel of the pulley group is fixedly connected to the feeding impeller.

[0011] Furthermore, a filter screen is fixedly connected to the upper inner side of the exhaust frame.

[0012] Furthermore, an impurity recovery frame is slidably connected to the inner side of the exhaust frame, a pull handle is fixedly connected to the middle position of the right end of the impurity recovery frame, and a threaded pin is rotatably connected to the upper side of the impurity recovery frame, with the threaded pin and the exhaust frame being spirally connected.

[0013] The beneficial effects of this utility model are:

[0014] This invention utilizes a feeding hopper to feed seeds into the left side of the sorting box, where a multi-speed fan blows air through it. The airflow, after passing through a diverter plate, ensures a more uniform airflow speed within the sorting box. Rotation of the turntable causes the adjusting screw to move, moving the airflow speed adjustment plate up and down, allowing for adjustment of the exhaust port size within the diverter plate. Combined with the multi-speed fan adjustment, this enables the adjustment of airflow speed for different seeds. The observation tube and limiting hole rod allow for precise external observation of the adjustment position, resulting in more accurate seed sorting. This invention... The rotation of the motor causes multiple feeding impellers to rotate simultaneously under the transmission of the pulley set, allowing the sorted seeds and particulate impurities to be discharged downwards through the discharge frame. This enables the device to continuously sort seeds, and the multiple sorting channels can sort seeds of different qualities. Dust and debris contained in the seeds are carried by the airflow into the impurity recovery frame and filtered through the filter screen to prevent dust and debris from being released into the air and causing pollution. The collected dust and debris can be removed by disassembling the threaded pins, improving the environmental friendliness of the seed air separation process. Attached Figure Description

[0015] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the specific embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof.

[0016] Figure 1 This is a front view of the adjustable air duct structure of a wind-selection type seed sorting machine according to this utility model;

[0017] Figure 2 This is a cross-sectional view of the installation structure of the adjustable air duct structure of a wind-selection seed sorting machine according to this utility model.

[0018] Figure 3 This is a cross-sectional view of the installation structure of the selection box and pulley assembly of the adjustable air duct structure of the wind-selection seed sorting machine of this utility model;

[0019] Figure 4 This is a cross-sectional view of the installation structure of the selection box of an adjustable air duct structure for a wind-selection type seed selector according to this utility model.

[0020] Figure 5 This is a schematic diagram of the installation structure of the impurity recovery frame of the adjustable air duct structure of a wind-selected seed sorting machine according to this utility model.

[0021] The following are labeled in the diagram: 1. Sorting box; 2. Air duct; 3. Multi-speed fan; 4. Diverter plate; 5. Adjusting screw; 6. Air speed fine adjustment plate; 7. Sorting channel; 8. Feed impeller; 9. Discharge frame; 10. Exhaust frame; 11. Feed hopper; 12. Turntable; 13. Observation tube; 14. Limiting hole rod; 15. Motor; 16. Pulley assembly; 17. Filter screen; 18. Impurity recovery frame; 19. Pull-out handle; 20. Threaded pin. Detailed Implementation

[0022] 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.

[0023] Please refer to Example 1 Figures 1-5 This utility model provides a technical solution:

[0024] An adjustable air duct structure for a wind-selection type seed sorting machine includes a sorting box 1, a discharge frame 9, and a feed hopper 11. An air duct 2 is sealed to the upper left end of the sorting box 1. A multi-speed fan 3 is sealed to the left end of the air duct 2. A flow divider 4 is fixedly connected to the right side of the air duct 2. An adjusting screw 5 is spirally connected to the middle of the upper end of the air duct 2. A wind speed fine-tuning plate 6 is rotatably connected to the lower end of the adjusting screw 5. The wind speed fine-tuning plate 6 is slidably connected to both the air duct 2 and the flow divider 4. The feed hopper 11 is fixedly connected to the upper left side of the sorting box 1. A turntable 12 is fixedly connected to the upper end of the adjusting screw 5. Observation tubes 13 are sealed to both the front and rear sides of the upper end of the air duct 2. Limiting hole rods 14 are slidably connected inside the observation tubes 13. The limiting hole rods 14 are connected to... The wind speed fine adjustment plates 6 are fixedly connected. The inner sides of the observation tube 13 and the limiting hole rod 14 are both provided with synchronous adjustment holes. The feed hopper 11 can send the seeds into the left side of the selection box 1. The seeds are blown by the multi-speed fan 3. After the airflow passes through the diverter plate 4, the air speed in the selection box 1 will be more uniform. The rotation of the turntable 12 can rotate the adjusting screw 5, thereby driving the wind speed fine adjustment plate 6 to move up and down. The size of the exhaust port in the diverter plate 4 can be adjusted. With the adjustment of the multi-speed fan 3, the wind speed of different seeds can be adjusted. The observation tube 13 and the limiting hole rod 14 can be used to accurately observe the adjustment position from the outside, making the seed sorting more accurate.

[0025] Please refer to Example 2 Figure 1 , Figure 3 , Figure 4 and Figure 5The difference between this embodiment and Embodiment 1 is as follows: A sorting channel 7 is provided on the lower inner side of the sorting box 1. A feeding impeller 8 is rotatably connected inside the sorting channel 7. A discharge frame 9 is sealed and connected to the lower front side of the sorting box 1. The internal channel of the discharge frame 9 is interconnected with the sorting channel 7. An exhaust frame 10 is fixedly connected to the upper right end of the sorting box 1. There are four feeding impellers 8. A motor 15 is located at the rear end of the feeding impeller 8 at the right end. The motor 15 is fixedly connected to the sorting box 1. A pulley group 16 is rotatably connected to the upper front side of the sorting box 1. The inner drive wheel of the pulley group 16 is fixedly connected to the feeding impeller 8. A filter screen 17 is fixedly connected to the upper inner side of the exhaust frame 10. An impurity recovery frame 18 is slidably connected to the inner side of the exhaust frame 10. At the middle right end of the impurity recovery frame 18... A pull-out handle 19 is fixedly connected, and a threaded pin 20 is rotatably connected to the upper side of the impurity recovery frame 18. The threaded pin 20 is spirally connected to the exhaust frame 10. The rotation of the motor 15 causes multiple feeding impellers 8 to rotate simultaneously under the transmission of the pulley group 16, and the sorted seeds and particulate impurities can be discharged downward through the discharge frame 9. This allows the device to continuously sort seeds, and through the action of multiple sorting channels 7, seeds can be sorted for different qualities. The dust and debris contained in the seeds will enter the impurity recovery frame 18 through the airflow and be filtered by the filter screen 17 to prevent dust and debris from being discharged into the air and causing pollution. The collected dust and debris can be removed by disassembling the threaded pin 20, improving the environmental friendliness of the seed air separation.

[0026] The working principle of this utility model is as follows: During use, the feed hopper 11 feeds seeds into the left side of the sorting box 1. A multi-speed blower 3 blows air through the box, and the airflow, after passing through the diverter plate 4, makes the airflow within the sorting box 1 more uniform. Rotation of the turntable 12 causes the adjusting screw 5 to rotate, which in turn moves the wind speed fine-tuning plate 6 up and down. This allows for adjustment of the exhaust port size within the diverter plate 4. Combined with the speed adjustment of the multi-speed blower 3, it enables the adjustment of the airflow speed for different seeds. The observation tube 13 and the limiting rod 14 allow for precise external observation of the adjustment position, resulting in more efficient seed sorting. The system is designed for precision sorting. The rotation of motor 15 enables multiple feeding impellers 8 to rotate simultaneously under the transmission of pulley group 16, allowing the sorted seeds and particulate impurities to be discharged downwards through discharge frame 9. This allows the device to continuously sort seeds and, through multiple sorting channels 7, to sort seeds of different qualities. Dust and debris contained in the seeds are carried by airflow into impurity recovery frame 18 and filtered by filter screen 17 to prevent dust and debris from being released into the air and causing pollution. The collected dust and debris can be removed by disassembling threaded pin 20, improving the environmental friendliness of seed air separation.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable air duct structure for an air-selection type seed concentrator, comprising a concentrator box (1), a discharge frame (9), and a feed hopper (11), characterized in that: The upper left end of the selection box (1) is sealed with an air duct (2). The left end of the air duct (2) is sealed with a multi-speed fan (3). The right side of the air duct (2) is fixedly connected with a flow divider (4). The middle position of the upper end of the air duct (2) is spirally connected with an adjusting screw (5). The lower end of the adjusting screw (5) is rotatably connected with a wind speed fine adjustment plate (6). The wind speed fine adjustment plate (6) is slidably connected to the air duct (2) and the flow divider (4) respectively. The lower side of the interior of the selection box (1) is provided with a sorting channel (7). The interior of the sorting channel (7) is rotatably connected with a feeding impeller (8). The lower side of the front end face of the selection box (1) is sealed with a discharge frame (9). The internal channel of the discharge frame (9) is interconnected with the sorting channel (7). The upper right end of the selection box (1) is fixedly connected with an exhaust frame (10).

2. The adjustable air duct structure of the wind-selection type seed sorting machine according to claim 1, characterized in that: The feed hopper (11) is fixedly connected to the upper left side of the selection box (1).

3. The adjustable air duct structure of the wind-selection type seed sorting machine according to claim 1, characterized in that: The upper end of the adjusting screw (5) is fixedly connected to a turntable (12).

4. The adjustable air duct structure of the wind-selection type seed sorting machine according to claim 1, characterized in that: The upper end of the air duct (2) is sealed with observation tubes (13) on both the front and rear sides. The observation tube (13) is slidably connected to a limit hole rod (14). The limit hole rod (14) is fixedly connected to the wind speed fine adjustment plate (6). The observation tube (13) and the limit hole rod (14) are both provided with synchronous adjustment holes on their inner sides.

5. The adjustable air duct structure of the wind-selection type seed sorting machine according to claim 1, characterized in that: There are four feeding impellers (8). The rear end of the feeding impeller (8) located on the right end is equipped with a motor (15). The motor (15) is fixedly connected to the selection box (1). The front end of the selection box (1) is rotatably connected to a pulley group (16). The inner drive wheel of the pulley group (16) is fixedly connected to the feeding impeller (8).

6. The adjustable air duct structure of the wind-selection type seed sorting machine according to claim 1, characterized in that: A filter screen (17) is fixedly connected to the upper inner side of the exhaust frame (10).

7. The adjustable air duct structure of the wind-selection type seed sorting machine according to claim 1, characterized in that: The inner side of the exhaust frame (10) is slidably connected to the impurity recovery frame (18), and a pull handle (19) is fixedly connected at the middle position of the right end of the impurity recovery frame (18). A threaded pin (20) is rotatably connected to the upper side of the impurity recovery frame (18), and the threaded pin (20) is spirally connected to the exhaust frame (10).

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