Hydraulic motor driving type wind power negative pressure seeding machine

Abstract

The utility model discloses a hydraulic motor driving type wind power negative pressure seeding machine which comprises a bearing frame, two fans are installed at the lower end of the bearing frame, one end of each fan is connected with a hydraulic driving mechanism, the other end of each fan is connected with an air inlet pipe, and the air inlet pipe is connected with an air outlet pipe. The upper end of the air inlet pipe penetrates through the side wall of the bearing frame and extends to the upper end of the bearing frame, the upper end of the air inlet pipe is connected with a spiral air inlet structure, the middle of the air inlet pipe is connected with a discharging mechanism, and a filtering device is installed on the air inlet pipe. The hydraulic drive fan is matched with a hydraulic drive fan system of a high-horsepower tractor, protection on the hydraulic motor and turbine blades can be greatly improved in a sand and dust environment, the filtering effect can be improved, the service life of a hydraulic motor sealing piece and the service life of the turbine blades can be prolonged, and meanwhile cleaning is convenient and fast.

Description

Technical Field

[0001] This utility model relates to the field of seeder technology, and in particular to a hydraulic motor driven wind-powered negative pressure seeder. Background Technology

[0002] A hydraulic motor-driven wind-powered negative pressure seeder refers to a hydraulic motor that is connected to the oil outlet valve or hydraulic valve of a high-horsepower tractor (either domestic or imported). After oil is supplied, the hydraulic motor is powered, and the hydraulic motor drives the fan to create a negative pressure. Its advantages are stable fan pressure and precise sowing, thereby increasing grain yield.

[0003] However, current hydraulic motor-driven blowers mostly use filters or single-stage cyclone separators for dust prevention at the air inlet, which have the following problems: filters are prone to clogging and need to be replaced frequently, resulting in high maintenance costs; and single-stage cyclone separators have insufficient particle separation efficiency, leading to wear on hydraulic motor seals and turbine blades. To address these issues, we propose a hydraulic motor-driven wind-powered negative pressure seeder. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a hydraulic motor-driven wind-powered negative pressure seeder.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A hydraulic motor-driven wind-powered negative pressure seeder includes a support frame. Two fans are installed at the lower end of the support frame. One end of each fan is connected to a hydraulic drive mechanism, and the other end of each fan is connected to an air inlet pipe. The upper end of the air inlet pipe penetrates the side wall of the support frame and extends to the upper end of the support frame. A spiral air intake structure is connected to the upper end of the air inlet pipe, and an exhaust mechanism is connected to the middle of the air inlet pipe. A filter device is installed on the air inlet pipe.

[0007] Preferably, the upper end of the fan is fixed with a mounting bracket, which is fixed to the lower end of the support frame by screws. The air outlet end of the fan is connected to a dispensing pipe. Two seed dispensing boxes are installed on the upper end of the support frame, and one seed dispensing box on the same side is connected to the upper end of one fan on the same side.

[0008] Preferably, the hydraulic drive mechanism includes a hydraulic motor connected to one end of the fan, and one end of the hydraulic motor is connected to a hydraulic oil pipe.

[0009] Preferably, the spiral air intake structure is connected to the air intake shroud at the upper end of the air intake pipe, a spiral guide plate is fixed on the inner side wall of the air intake shroud, and a barrier net is installed at one end of the air intake shroud.

[0010] Preferably, the emission mechanism includes an emission pipe disposed on one side of the lower end of the intake pipe, the upper end of the emission pipe is connected to a threaded pipe, the lower end of the intake pipe is provided with a threaded through hole, a fixing bracket is fixed on one side of the emission pipe, a cylinder is installed on one side of the fixing bracket, a sealing block is fixed to the end of the piston rod of the cylinder, and the sealing block penetrates the emission pipe and extends into the emission pipe.

[0011] Preferably, the filtration device includes a filter screen that extends through the filter cover.

[0012] In this invention, the air intake hood adopts a tapered, tapered spiral channel with a 30° inclined spiral guide plate inside. During air intake, the forced airflow forms an initial vortex, using centrifugal force to throw large particles of impurities downwards, causing them to fall into the discharge pipe. The discharge pipe is used to collect the separated large particles of impurities. A pneumatic mechanism is installed in the tank, which can be opened periodically for discharge cleaning. The filter hood is tapered and has a filter screen inserted inside, which can be easily removed for cleaning. When the airflow passes through the air intake hood and reaches the filter hood, it can be fully released. After passing through the filter screen, fine impurities are filtered. When the fan is working, the hydraulic mechanism sends hydraulic oil into the hydraulic motor, which drives the fan. The seed dispensing box at the top sends seeds into the fan. Gas is drawn in through the air intake hood, and then the seeds are released through the dispensing pipe.

[0013] The present invention has the following advantages:

[0014] 1. Through dual impurity removal, the separation efficiency of dust particles with a diameter >10μm reaches 99%, and the separation efficiency of dust particles with a diameter of 2-5μm is >85%, which is 40% higher than the traditional single cone structure, greatly improving the filtration effect;

[0015] 2. By optimizing the flow guide structure, the system pressure loss can be reduced to less than 800Pa, while reducing wear on hydraulic motor seals and turbine blades, thus extending service life.

[0016] 3. Pneumatic automatic discharge improves cleaning efficiency and reduces labor costs.

[0017] In summary, this utility model is adapted to the hydraulic drive fan system of high-horsepower tractors, which can greatly improve the protection of hydraulic motors and turbine blades in dusty environments. It can not only improve the filtration effect, but also extend the service life of hydraulic motor seals and turbine blades, while facilitating quick and easy cleaning. Attached Figure Description

[0018] Figure 1 This is a structural diagram of the present invention;

[0019] Figure 2 This is a structural diagram showing the connection between the air intake cover and the air intake pipe of this utility model;

[0020] Figure 3This is a structural diagram of the emission mechanism of this utility model;

[0021] Figure 4 This is a structural diagram of the internal structure of the air intake cover of this utility model;

[0022] Figure 5 This is a structural diagram of the internal structure of the filter cover of this utility model.

[0023] In the diagram: 1. Intake hood, 2. Cylinder, 3. Mounting bracket, 4. Intake pipe, 5. Seed dispensing box, 6. Fan, 7. Hydraulic oil pipe, 8. Discharge pipe, 9. Filter screen, 10. Hydraulic motor, 11. Support frame, 12. Dispensing pipe, 13. Filter cover, 14. Threaded through hole, 15. Threaded pipe, 16. Fixing bracket, 17. Sealing block, 18. Spiral guide plate. Detailed Implementation

[0024] 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.

[0025] Reference Figure 1-5 A hydraulic motor-driven wind-powered negative pressure seeder includes a support frame 11. The entire seeder is supported by the support frame 11 as the main support structure, bearing all key components and ensuring the stable operation and functionality of the seeder. Two fans 6 are installed at the lower end of the support frame 11. One end of the fans 6 is connected to a hydraulic drive mechanism. The hydraulic drive mechanism includes a hydraulic motor 10 connected to one end of the fans 6. One end of the hydraulic motor 10 is connected to a hydraulic oil pipe 7. The pressure energy of the hydraulic oil is converted into the mechanical energy of the hydraulic motor 10, thereby driving the fans 6 to rotate. Compared with the traditional electric drive method, the hydraulic drive has advantages such as large torque, wide speed range, and strong overload resistance. It can adapt to different sowing operation environments and working conditions. For example, in some complex terrain conditions, the hydraulic drive can flexibly adjust the speed and power of the fans according to actual needs to ensure the stability of the sowing effect.

[0026] The other end of the blower 6 is connected to the air inlet pipe 4. The upper end of the air inlet pipe 4 passes through the side wall of the support frame 11 and extends to the upper end of the support frame 11. The upper end of the air inlet pipe 4 is connected to the spiral air inlet structure, which is connected to the air inlet hood 1 at the upper end of the air inlet pipe 4. A spiral guide plate 18 is fixed on the side wall inside the air inlet hood 1. A barrier net is installed at one end of the air inlet hood 1. When outside air enters the air inlet hood 1, the spiral guide plate 18 will force the airflow to form an initial vortex. According to the principle of centrifugal force, large particles of impurities will be thrown towards the side wall of the air inlet hood 1 by centrifugal force under the action of the vortex, and fall down into the discharge pipe 8 along the side wall. The barrier net is used to further prevent larger debris from entering the air inlet pipe 4, protecting the blower 6 and the subsequent seeding system from damage. The spiral air inlet structure effectively achieves the initial separation of large particles of impurities in the air inlet, improves the air quality entering the blower 6, reduces the wear and blockage of the equipment by impurities, and extends the service life of the equipment.

[0027] The middle part of the air intake pipe 4 is connected to a discharge mechanism, which includes a discharge pipe 8 located on one side of the lower end of the air intake pipe 4. The upper end of the discharge pipe 8 is connected to a threaded pipe 15, and the lower end of the air intake pipe 4 is provided with a threaded through hole 14. A fixing bracket 16 is fixed on one side of the discharge pipe 8, and a cylinder 2 is installed on one side of the fixing bracket 16. A sealing block 17 is fixed to the end of the piston rod of the cylinder 2. The sealing block 17 passes through the discharge pipe 8 and extends into the discharge pipe 8. The discharge pipe 8 is used to collect large particulate impurities separated from the air intake. When the seeder is working normally, the sealing block 17 is in a closed state under the action of the cylinder 2 to prevent airflow from leaking from the discharge pipe 8. When the impurities collected in the discharge pipe 8 reach a certain amount, the piston rod of the cylinder 2 can be extended to drive the sealing block 17 to open the discharge pipe 8 and discharge the impurities. The regular discharge and cleaning can ensure the normal function of the discharge pipe 8 and avoid the accumulation of impurities affecting the air intake effect and the normal operation of the equipment.

[0028] A filter device is installed on the air intake pipe 4. The filter device includes a filter screen 9 that runs through the filter cover 13. Since the filter cover 13 is conical, the airflow can diffuse fully within it, increasing the contact area with the filter screen 9. The filter screen 9 can further filter out fine impurities in the airflow, ensuring that the air entering the fan 6 is purer. At the same time, the conical design of the filter cover 13 makes it easy to remove and clean the filter screen 9, which is convenient for maintenance and upkeep. For example, after long-term use, some impurities will accumulate on the filter screen, affecting the filtration effect. At this time, you can simply remove the filter screen 9 from the filter cover 13 for cleaning or replacement to restore the performance of the filter device.

[0029] A mounting bracket 3 is fixed to the upper end of the fan 6. The mounting bracket 3 is fixed to the lower end of the support frame 11 by screws. The air outlet end of the fan 6 is connected to the dispensing pipe 12. Two seed dispensing boxes 5 are installed on the upper end of the support frame 11. One seed dispensing box 5 on the same side is connected to the upper end of the fan 6 on the same side. When the fan 6 is working, the hydraulic mechanism sends hydraulic oil into the hydraulic motor 10, which drives the fan 6 to operate and form a negative pressure. At this time, the seeds in the upper seed dispensing box 5 are sent into the fan 6 under the action of gravity and wind force. They are released through the dispensing pipe 12 along with the air drawn in by the fan 6. The negative pressure sowing method has the advantages of uniform sowing and high efficiency. By adjusting the speed of the fan 6 and the dispensing speed of the seed dispensing box 5, the amount and spacing of seeds can be precisely controlled according to different crops and sowing requirements, thereby improving sowing quality and yield.

[0030] In this invention, the air intake hood 1 adopts a tapered, tapered spiral channel with a 30° inclined spiral guide plate 18 inside. When air is intake, the forced airflow forms an initial vortex, and centrifugal force is used to throw large particles of impurities downward, causing them to fall into the discharge pipe 8. The discharge pipe 8 is used to collect the separated large particles of impurities. A pneumatic mechanism is installed in the tank, which can be opened periodically for discharge and cleaning. The filter hood 13 is tapered and has a filter screen 9 inserted inside, which can be easily removed for cleaning. When the airflow passes through the air intake hood 1 and reaches the filter hood 13, it can be fully released. After passing through the filter screen 9, fine impurities are filtered. When the blower 6 is working, the hydraulic mechanism sends hydraulic oil into the hydraulic motor 10, which drives the blower 6 to operate. The seed delivery box 5 at the upper end sends seeds into the blower 6. The gas is drawn in through the air intake hood 1, and then the seeds are released through the delivery pipe 12.

[0031] 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 hydraulic motor driven wind negative pressure seeder comprising a carrier frame (11), characterized in that, Two fans (6) are installed at the lower end of the support frame (11). One end of the fan (6) is connected to a hydraulic drive mechanism, and the other end of the fan (6) is connected to an air inlet pipe (4). The upper end of the air inlet pipe (4) passes through the side wall of the support frame (11) and extends to the upper end of the support frame (11). The upper end of the air inlet pipe (4) is connected to a spiral air inlet structure. The middle part of the air inlet pipe (4) is connected to an exhaust mechanism. A filter device is installed on the air inlet pipe (4).

2. The wind-driven negative pressure seeder of claim 1, wherein: The upper end of the fan (6) is fixed with a mounting bracket (3), which is fixed to the lower end of the support frame (11) by screws. The air outlet end of the fan (6) is connected to a dispensing pipe (12). Two seed dispensing boxes (5) are installed on the upper end of the support frame (11). One seed dispensing box (5) on the same side is connected to the upper end of one fan (6) on the same side.

3. The wind-driven negative pressure planter of claim 1, wherein: The hydraulic drive mechanism includes a hydraulic motor (10) connected to one end of the blower (6), and one end of the hydraulic motor (10) is connected to a hydraulic oil pipe (7).

4. The wind-driven negative pressure planter of claim 1, wherein: The spiral air intake structure is connected to the air intake hood (1) at the upper end of the air intake pipe (4). A spiral guide plate (18) is fixed on the inner side wall of the air intake hood (1). A barrier net is installed at one end of the air intake hood (1).

5. The wind-driven negative pressure planter of claim 1, wherein: The emission mechanism includes an emission pipe (8) located on one side of the lower end of the intake pipe (4). The upper end of the emission pipe (8) is connected to a threaded pipe (15). The lower end of the intake pipe (4) is provided with a threaded through hole (14). A fixing bracket (16) is fixed on one side of the emission pipe (8). A cylinder (2) is installed on one side of the fixing bracket (16). A sealing block (17) is fixed at the end of the piston rod of the cylinder (2). The sealing block (17) passes through the emission pipe (8) and extends into the emission pipe (8).

6. The wind-driven negative pressure planter of claim 1, wherein: The filtration device includes a filter screen (9) that extends through the filter cover (13).

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