Electrically-driven wind power negative pressure seeder

Abstract

The utility model discloses an electric drive type wind power negative pressure seeder which comprises an installation frame, a plurality of fan shells are installed at the upper end of the installation frame, a drive motor is installed on one side of each fan shell, and the tail end of an output shaft of each drive motor is connected with a transmission shaft. One end of the transmission shaft penetrates through the side wall of the fan shell and is rotationally connected to one side in the fan shell, a plurality of first arc-shaped blades and first vertical blades are fixed to the upper end of the transmission shaft at equal intervals, and a seed box is detachably connected to one side of the upper end of the fan shell. Through cooperation of airflow guide optimization of the double arc-shaped blades and secondary pressurization of the double vertical blades, the problems of efficiency bottleneck, noise pollution and adaptability to complex working conditions of a traditional fan are solved, in addition, the fan has the advantages of being uniform in load distribution and low in noise, the service life is greatly prolonged, and the cost is reduced. Meanwhile, adhesion of seed chippings or dust can be effectively avoided, and the anti-blocking performance is improved.

Description

An electrically driven wind-powered negative pressure seeder Technical Field

[0001] This utility model relates to the field of negative pressure seeders, and in particular to an electrically driven wind-powered negative pressure seeder. Background Technology

[0002] A pneumatic seeder is a type of seeder that uses negative pressure to extract seeds for precision sowing. It is widely used in sowing. However, traditional pneumatic seeders have the following drawbacks: the negative pressure system relies on the power output of the tractor, which can lead to unstable negative pressure due to speed fluctuations. In addition, the use of a single turbine blade for sowing, as seen in patent application number CN202420996455.2, presents efficiency bottlenecks and noise pollution issues due to its single turbine structure. To address these issues, we propose an electrically driven wind-powered negative pressure seeder. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing an electrically driven wind-powered negative pressure seeder.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An electrically driven wind-powered negative pressure seeder includes a mounting frame. Multiple fan housings are mounted on the upper end of the mounting frame. A drive motor is mounted on one side of each fan housing. A transmission shaft is connected to the output shaft of the drive motor. One end of the transmission shaft passes through the side wall of the fan housing and is rotatably connected to one side inside the fan housing. Multiple first arc-shaped blades and first vertical blades are fixed at equal intervals on the upper end of the transmission shaft. A seed box is detachably connected to one side of the upper end of the fan housing. An air intake filter structure is installed on one side of the upper end of the fan housing.

[0006] Preferably, a dispensing port is installed on one side of the upper end of the fan housing, a first mounting plate is installed on the upper end of the dispensing port, a second mounting plate is installed on the upper end of the first mounting plate by four screws, a connecting pipe is connected to the upper end of the second mounting plate, and the upper end of the connecting pipe is connected to the lower end of the seed box.

[0007] Preferably, the air intake filtration structure includes an air intake pipe connected to the other side of the upper end of the fan housing, and a honeycomb filter plate is installed at the upper end of the air intake pipe, with a plurality of honeycomb filter holes evenly spaced on the honeycomb filter plate.

[0008] Preferably, the lower end of the fan housing is connected to a discharge pipe, the lower end of which penetrates the side wall of the mounting frame and extends to the lower end of the mounting frame.

[0009] Preferably, the seed box has an addition port at its upper end, and the addition port is fitted with a cap.

[0010] Preferably, four second arc-shaped blades and four second vertical blades are fixed at equal intervals on one side wall of the rotating shaft.

[0011] Preferably, the first arc-shaped blade is made of a nickel-based shape memory alloy.

[0012] Preferably, a hydrophobic coating is applied to the perimeter of the first vertical blade.

[0013] In this invention, the first arc-shaped blade generates basic negative pressure, and the first vertical blade achieves secondary pressurization through the swirling effect. The two are connected in series to achieve a total pressure ratio of 2.5:15. The optimized airflow path of the double arc-shaped blades reduces turbulence loss by 38%, and the swirling acceleration effect of the vertical blades reduces the unsteady interaction between the wake flow and the volute, reducing the pressure pulsation amplitude by 45%. The double arc-shaped blades reduce airflow impact noise, and the vertical blades suppress the vortex shedding sound source, resulting in overall noise reduction. The honeycomb structure air inlet further enhances the absorption of high-frequency airflow noise. The vertical blade spacing is designed to be 15mm, and with the surface hydrophobic coating, it can effectively prevent seed debris or dust from adhering, extending the maintenance cycle to 300 hours (150 hours for the arc-shaped blades). The hexagonal units of the honeycomb structure form regularly arranged guide channels, which can divide the intake airflow into multiple micro-laminar flows, significantly reducing turbulence intensity.

[0014] This utility model has the following advantages:

[0015] 1. The curved blades are responsible for stable operation under a wide range of working conditions, while the swirling acceleration effect of the vertical blades reduces the unsteady interaction between the wake flow and the volute, forming complementary control.

[0016] 3. The double-arc blades reduce airflow impact noise, and the vertical blades suppress the sound source of vortex shedding, thus reducing the overall noise. The honeycomb structure air inlet further enhances the absorption of high-frequency airflow noise.

[0017] 4. The vertical blades combined with the hydrophobic coating on the surface can effectively prevent seed debris or dust from adhering, thus improving service life.

[0018] 5. The regularly arranged flow channels formed by the hexagonal units of the honeycomb structure can divide the intake airflow into multiple micro laminar flows, significantly reducing the intensity of turbulence;

[0019] In summary, this invention solves the efficiency bottleneck, noise pollution, and adaptability issues of traditional fans by optimizing airflow guidance with double arc blades and synergistically combining secondary pressurization with double vertical blades. In addition, it features uniform load distribution and low noise, greatly extending service life. It also effectively prevents seed debris or dust from adhering, improving anti-clogging performance. Attached Figure Description

[0020] Figure 1 is a structural diagram of this utility model;

[0021] Figure 2 is a structural diagram of the double arc blade and double vertical blade of this utility model;

[0022] Figure 3 is a structural diagram of the honeycomb filter plate of this utility model;

[0023] Figure 4 is an enlarged view of the structure at point A in Figure 1;

[0024] Figure 5 is a structural diagram of the single arc-shaped blade and the single vertical blade of this utility model.

[0025] In the diagram: 1 connecting pipe, 2 cap, 3 seed box, 4 honeycomb filter plate, 5 air inlet pipe, 6 fan housing, 7 drive motor, 8 mounting bracket, 9 discharge pipe, 10 screw, 11 first mounting plate, 12 second mounting plate, 13 first arc blade, 14 rotating shaft, 15 first vertical blade, 16 second arc blade, 17 hydrophobic coating, 18 second vertical blade. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Referring to Figures 1-5, an electrically driven wind-powered negative pressure seeder includes a mounting frame 8. Multiple fan housings 6 are mounted on the upper end of the mounting frame 8. A drive motor 7 is mounted on one side of each fan housing 6. A controller is connected to a high-horsepower tractor battery to provide electrical power. This power provides power to the drive motor 7 to form wind-powered negative pressure, provides sowing power to the seed metering device, and provides fertilization power to the fertilization system. The power output is stable, the fan air pressure is stable, which is more stable than that of a mechanically driven fan. The seed metering device is accurate in sowing, there is no loss of rotation, and the fertilization is uniform, achieving the effect of increasing yield and income.

[0028] The output shaft of the drive motor 7 is connected to a transmission shaft 14. One end of the transmission shaft 14 passes through the side wall of the fan housing 6 and is rotatably connected to one side inside the fan housing 6. Multiple first arc-shaped blades 13 and first vertical blades 15 are fixed at equal intervals on the upper end of the transmission shaft 14. A seed box 3 is detachably connected to one side of the upper end of the fan housing 6. An air intake filter structure is installed on one side of the upper end of the fan housing 6. The first arc-shaped blades 13 are made of nickel-based shape memory alloy. A hydrophobic coating 17 is coated on the side wall of the first vertical blades 15. These blades rotate at high speed under the drive of the transmission shaft 14, thereby generating wind negative pressure.

[0029] Nickel-based shape memory alloys have unique properties. They can maintain shape stability under different working environments. Even if subjected to a certain degree of external impact or temperature change, they can recover to their original shape, ensuring that the first arc blade 13 will not deform during long-term high-speed rotation, thereby maintaining a stable negative pressure generation capability.

[0030] The hydrophobic coating 17 makes it difficult for seed debris or dust to adhere to the surface of the first vertical leaf 15. During the sowing process, seed debris and dust will be mixed in the air. If these impurities adhere to the leaf, they will affect the rotation efficiency of the leaf and the flow of air, thus affecting the generation of negative pressure and the sowing effect. The presence of the hydrophobic coating 17 makes it easy for impurities to slide off when they come into contact with the leaf surface, effectively avoiding the accumulation of impurities.

[0031] A dispensing port is installed on one side of the upper end of the fan housing 6. A first mounting plate 11 is installed on the upper end of the dispensing port. A second mounting plate 12 is installed on the upper end of the first mounting plate 11 by four screws 10. A connecting pipe 1 is connected to the upper end of the second mounting plate 12. The upper end of the connecting pipe 1 is connected to the lower end of the seed box 3. The air intake filter structure includes an air intake pipe 5 connected to the other side of the upper end of the fan housing 6. A honeycomb filter plate 4 is installed on the upper end of the air intake pipe 5. Multiple honeycomb filter holes are provided on the honeycomb filter plate 4 at equal intervals. The hexagonal units of the honeycomb structure form a regularly arranged flow channel, which can divide the air intake airflow into multiple micro laminar flows and significantly reduce the turbulence intensity.

[0032] The lower end of the fan housing 6 is connected to the discharge pipe 9. The lower end of the discharge pipe 9 passes through the side wall of the mounting frame 8 and extends to the lower end of the mounting frame 8. The upper end of the seed box 3 is provided with an addition port, and a cover 2 is installed on the addition port to facilitate the addition of new seeds.

[0033] Four second arc-shaped blades 16 and four second vertical blades 18 are fixed at equal intervals on the side wall of the rotating shaft 14. The design of the arc-shaped blades can make the airflow flow more smoothly, avoid the chaos and collision of the airflow, thereby reducing energy loss and improving energy utilization efficiency.

[0034] The swirling acceleration effect of the vertical blades (first vertical blade 15 and second vertical blade 18) reduces the unsteady interaction between the wake flow and the volute, and the pressure pulsation amplitude decreases by 45%. The wake flow refers to the irregular airflow formed behind the blade after it rotates. The unsteady interaction between this airflow and the volute leads to pressure instability. The swirling acceleration effect of the vertical blades can improve this situation, making the pressure more stable and improving the working stability of the seeder.

[0035] During the operation of the seeder, the impact of airflow on the blades and the formation of vortices generate significant noise. The design of double-arc blades and vertical blades effectively reduces these noise sources, providing operators with a relatively quiet working environment. The vertical blade spacing is designed to be 15mm, and with the surface hydrophobic coating 17, it can effectively prevent seed debris or dust from adhering, extending the maintenance cycle to 300 hours (150 hours for arc blades). The combined effect of the appropriate blade spacing and hydrophobic coating greatly reduces the adhesion of impurities, lowers the frequency of maintenance, and improves the efficiency of the seeder.

[0036] In this invention, the first arc-shaped blade 13 generates basic negative pressure, and the first vertical blade 15 achieves secondary pressurization through the swirling effect. The two are connected in series to achieve a total pressure ratio of 2.5:15. The optimized airflow path of the double arc-shaped blades reduces turbulence loss by 38%, and the swirling acceleration effect of the vertical blades reduces the unsteady interaction between the wake flow and the volute, reducing the pressure pulsation amplitude by 45%. The double arc-shaped blades reduce airflow impact noise, and the vertical blades suppress the vortex shedding sound source, resulting in overall noise reduction. The honeycomb structure air inlet further enhances the absorption of high-frequency airflow noise. The vertical blade spacing is designed to be 15mm, and with the surface hydrophobic coating, it can effectively prevent seed debris or dust from adhering, extending the maintenance cycle to 300 hours (150 hours for the arc-shaped blades). The hexagonal units of the honeycomb structure form regularly arranged guide channels, which can divide the intake airflow into multiple micro laminar flows, significantly reducing turbulence intensity.

[0037] 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. An electrically driven wind-powered negative pressure seeder, comprising a mounting frame (8), characterized in that, The upper end of the mounting bracket (8) is equipped with multiple fan housings (6). A drive motor (7) is installed on one side of the fan housing (6). The output shaft of the drive motor (7) is connected to a transmission shaft (14). One end of the transmission shaft (14) passes through the side wall of the fan housing (6) and is rotatably connected to one side inside the fan housing (6). Multiple first arc-shaped blades (13) and first vertical blades (15) are fixed at equal intervals on the upper end of the transmission shaft (14). A seed box (3) is detachably connected to one side of the upper end of the fan housing (6). An air intake filter structure is installed on one side of the upper end of the fan housing (6).

2. The electrically driven wind-powered negative pressure seeder according to claim 1, characterized in that: A dispensing port is installed on one side of the upper end of the fan housing (6). A first mounting plate (11) is installed on the upper end of the dispensing port. A second mounting plate (12) is installed on the upper end of the first mounting plate (11) by four screws (10). A connecting pipe (1) is connected to the upper end of the second mounting plate (12). The upper end of the connecting pipe (1) is connected to the lower end of the seed box (3).

3. The electrically driven wind-powered negative pressure seeder according to claim 1, characterized in that: The air intake filtration structure includes an air intake pipe (5) connected to the other side of the upper end of the fan housing (6). A honeycomb filter plate (4) is installed at the upper end of the air intake pipe (5), and multiple honeycomb filter holes are provided at equal intervals on the honeycomb filter plate (4).

4. The electrically driven wind-powered negative pressure seeder according to claim 1, characterized in that: The lower end of the fan housing (6) is connected to a discharge pipe (9), the lower end of which penetrates the side wall of the mounting frame (8) and extends to the lower end of the mounting frame (8).

5. The electrically driven wind-powered negative pressure seeder according to claim 1, characterized in that: The seed box (3) is provided with an addition port at the top, and a cap (2) is installed on the addition port.

6. The electrically driven wind-powered negative pressure seeder according to claim 1, characterized in that: Four second arc-shaped blades (16) and four second vertical blades (18) are fixed at equal intervals on one side wall of the drive shaft (14).

7. The electrically driven wind-powered negative pressure seeder according to claim 1, characterized in that: The first arc-shaped blade (13) is made of nickel-based shape memory alloy.

8. The electrically driven wind negative pressure seeder according to claim 1, characterized in that: The first vertical blade (15) has a hydrophobic coating (17) on its one-circumference sidewall.

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