Liquid organic fertilizer variable application device and method of use

Abstract

The application relates to a liquid organic fertilizer variable application device and a use method, which comprises a frame, a liquid fertilizer tank, a liquid pump and a plurality of ploughs, the back of the plough is fixedly connected with a fertilizer outlet pipe, the fertilizer outlet pipe is communicated with the liquid pump through a flow regulating valve, a soil detection mechanism is arranged on the front of the frame of the plough, the soil detection mechanism comprises a soil nutrient rapid tester, a mounting plate which is slidably connected on the frame and a reset tension spring which pulls the mounting plate forward, a driving mechanism which drives a sensor probe to lift is arranged on the mounting plate, the soil detection mechanism further comprises a probe range finder which detects the height of the sensor probe and a ground range finder which detects the position of the ground, the application can adjust the fertilizer application amount according to the hardness and nitrogen content of the soil, if the soil hardness is large and the soil nitrogen content is low, the flow regulating valve is controlled to increase the flow supply, if the hardness is small and the nitrogen content is high, the liquid organic fertilizer supply amount is reduced, and the variable application of the liquid organic fertilizer is realized.

Description

Technical Field

[0001] This invention relates to the field of organic fertilizer application, specifically to a variable-rate liquid organic fertilizer application device and its usage method. Background Technology

[0002] Liquid organic fertilizer application technology uses a tractor as a power source, with spray hoses arranged side-by-side to form a comb-shaped spraying frame. A liquid pump delivers the liquid fertilizer stored in the tank directly to the soil. Direct spraying of liquid fertilizer onto the soil can easily lead to fertilizer evaporation and soil compaction. By combining the liquid fertilizer application device with a deep tillage system, deeper application of the liquid organic fertilizer can be achieved, improving fertilization efficiency. Currently, the common structure involves installing a fertilizer outlet pipe behind the plow blades, through which the liquid fertilizer flows into the furrows behind the plow blades.

[0003] The above structure can achieve deep application of organic fertilizer. However, during deep application, the amount of fertilizer needs to be dynamically adjusted according to factors such as soil hardness and nitrogen content. The soil nutrient rapid tester can measure the nitrogen content in the soil, but it needs to be inserted into the soil for a certain period of time to measure. If it is directly installed on the liquid fertilizer device, it needs to stop moving forward during measurement, so it cannot achieve frequent dynamic measurement. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a variable application device for liquid organic fertilizer and a method for using it.

[0005] This invention is achieved through the following technical solution: a variable application device for liquid organic fertilizer is provided, comprising a frame, a liquid fertilizer tank, a liquid pump, and multiple plow blades fixed to the lower end of the frame. A fertilizer outlet pipe is fixed to the back of each plow blade, and the fertilizer outlet pipe is connected to the liquid pump via a flow regulating valve. A soil testing mechanism is mounted on the frame in front of the plow blades. The soil testing mechanism includes a soil nutrient rapid analyzer, a mounting plate slidably connected to the frame, and a return spring that pulls the mounting plate forward. The mounting plate is equipped with a drive mechanism for raising and lowering the sensor probe of the soil nutrient rapid analyzer. The soil testing mechanism also includes a probe rangefinder for detecting the height of the sensor probe and a ground rangefinder for detecting the ground position.

[0006] As an optimization, the drive mechanism includes a guide box fixed to the mounting plate, a positioning block slidably connected to the guide box, and a block spring that pushes the positioning block backward. A positioning beam located behind the positioning block is fixed to the frame. The drive mechanism also includes a drive gear shafted to the guide box and a drive motor that drives the drive gear to rotate. The positioning block and the drive gear are arranged left and right and form a guide channel between them to allow the rack to slide vertically. The sensor probe is fixed to the lower end of the rack. The positioning block is provided with a groove that matches the rack. After the positioning block moves to the positioning beam and is pressed down, the groove moves to the back of the rack, causing the rack to separate from the drive gear. An upper tension spring that pulls the rack upward is installed in the guide box.

[0007] As an optimization, the side of the groove is a transition slope.

[0008] As an optimization, a guide shaft extending forward and backward is fixedly connected inside the guide box, and a guide hole for inserting the guide shaft is opened on the top block.

[0009] As an optimization, the top block spring is sleeved on the guide shaft.

[0010] As an optimization, the drive motor is mounted on a mounting plate.

[0011] As an optimization, the frame is fixedly connected to a linear guide rail extending forward and backward, and a slider adapted to the linear guide rail is fixedly connected to the mounting plate.

[0012] As an optimization, a fertilizer outlet is provided on the rear side of the fertilizer outlet pipe, and the fertilizer outlet pipe is connected to the back of the plow blade by bolts.

[0013] A method for using a liquid organic fertilizer variable application device includes the following steps: a) installing the frame on a tractor and following the tractor to achieve deep soil loosening through the plow blade;

[0014] b. The liquid pump pumps the fertilizer solution in the liquid fertilizer tank to the fertilizer outlet pipe, thereby discharging it into the soil behind the plow blade. The opening of the flow regulating valve is controlled by the soil hardness and nitrogen content detected by the soil testing agency, thereby controlling the amount of fertilizer applied.

[0015] c. When the soil testing agency is working, the drive motor drives the drive gear to rotate, and the drive gear drives the rack to slide downward, so that the sensor probe of the soil nutrient rapid tester is inserted into the soil. The height of the sensor probe is detected by the probe rangefinder, and the height of the ground is detected by the ground rangefinder, so as to determine the depth of the sensor probe inserted into the soil, and thus the hardness of the soil.

[0016] d. After the sensor probe is inserted into the soil, as the frame continues to move forward, the sensor probe and the drive mechanism slide backward relative to the frame and stretch the reset spring, thereby keeping the sensor probe in the soil for a certain detection time.

[0017] e. After the positioning block in the drive mechanism moves to the positioning beam, it is pressed down by the positioning beam, causing the groove to move to the back of the rack. After the back of the rack loses its support, it separates from the drive gear under the action of the upper tension spring and moves upward quickly, thereby pulling the sensor probe out of the soil.

[0018] f. After the sensor probe is pulled out of the soil, under the action of the reset spring, the sensor probe and the drive mechanism slide forward relative to the frame to achieve reset. At this time, the positioning block separates from the positioning beam. The positioning block is pushed backward by the top block spring, so that the positioning block supports the back of the rack. The rack and the drive gear re-mesh, which is convenient for the next detection.

[0019] The beneficial effects of the present invention are as follows: The present invention provides a liquid organic fertilizer variable application device and method, which can adjust the amount of fertilizer applied according to the soil hardness and nitrogen content. If the soil hardness is high and the soil nitrogen content is low, the pipeline will increase the flow supply. If the hardness is low and the nitrogen content is high, the liquid organic fertilizer supply will be reduced by controlling the flow regulating valve, thereby realizing the variable application of liquid organic fertilizer. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the side structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the rear structure of the present invention;

[0022] Figure 3 This is a top view of the soil testing mechanism of the present invention;

[0023] Figure 4 This is a top view of another state of the soil testing mechanism of the present invention;

[0024] Figure 5 This is a top view of the guide box of the present invention;

[0025] Figure 6 This is a top view of the top block of the present invention;

[0026] Figure 7 This is a side view of the soil testing mechanism of the present invention;

[0027] As shown in the figure:

[0028] 1. Fertilizer outlet pipe; 2. Plow blade; 3. Frame; 4. Liquid fertilizer tank; 5. Connecting frame; 6. Connecting plate; 7. Linear guide rail; 8. Slider; 9. Mounting plate; 10. Sensor probe; 11. Rack; 12. Guide box; 13. Drive gear; 14. Drive motor; 15. Reset spring; 16. Probe rangefinder; 17. Ground rangefinder; 18. Upper tension spring; 19. Positioning top block; 20. Guide shaft; 21. Top block spring; 22. Positioning beam; 23. Groove. Detailed Implementation

[0029] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to describe the solution.

[0030] like Figures 1-7 As shown, a variable application device for liquid organic fertilizer of the present invention includes a frame 3, a liquid fertilizer tank 4, a liquid pump, and a plurality of plow blades 2 fixed to the lower end of the frame 3. The plow blades 2 are located at the rear end of the frame 3, and a reserved position at the front end is reserved for installing a soil testing mechanism. The plow blades 2 are installed on the frame 3 by bolts and can be adjusted to the left and right positions, thereby adjusting the spacing during the deep loosening process.

[0031] A connecting frame 5 is fixed to the front end of the frame 3. Three connection points are fixed on the connecting frame 5 in a triangular arrangement. Each connection point consists of two connecting plates 6, thus realizing the connection with the tractor.

[0032] The liquid fertilizer tank 4 is placed on the top of the frame. In this embodiment, there are two liquid fertilizer tanks 4 arranged side by side. The liquid pump is located between the two liquid fertilizer tanks 4, and the inlet of the liquid pump is connected to the two liquid fertilizer tanks 4.

[0033] A fertilizer outlet pipe 1 is fixedly connected to the back of the plow blade 2. The fertilizer outlet pipe 1 is connected to a liquid pump through a flow regulating valve. The fertilizer outlet pipe 1 is a metal pipe. A fertilizer outlet is opened on the rear side of the fertilizer outlet pipe 1. The fertilizer outlet pipe 1 is connected to the back of the plow blade 2 by bolts, thereby realizing replacement and maintenance.

[0034] A soil testing mechanism is installed on the frame 3 in front of the plow blade 2. Each plow blade 2 corresponds to one soil testing mechanism, thereby allowing for individual control of the fertilizer output behind each plow blade 2.

[0035] The soil testing mechanism includes a soil nutrient rapid tester, a mounting plate 9 that slides back and forth on the frame 3, and a reset spring 15 that pulls the mounting plate 9 forward. The soil nutrient rapid tester can detect the nitrogen, phosphorus, and potassium content in the soil. Measurement can be achieved by inserting the sensor probe 10 into the soil. At the same time, this invention measures the soil hardness by measuring the depth of the sensor probe 10 inserted into the soil. The greater the soil hardness, the lower the insertion depth.

[0036] like Figure 7As shown, the soil testing mechanism also includes a probe rangefinder 16 for detecting the height of the sensor probe 10 and a ground rangefinder 17 for detecting the ground position. The ground rangefinder 17 is installed at the front end of the frame 3 and faces downwards to detect the distance between the sensor probe 10 and the ground. The probe rangefinder 16 faces downwards to detect the height of the sensor probe 10. The depth of insertion into the soil is determined by the difference between the data from the two rangefinders.

[0037] The frame 3 is fixedly connected to a linear guide rail 7 extending forward and backward, and the mounting plate 9 is fixedly connected to a slider 8 that is adapted to the linear guide rail 7. Each mounting plate 9 has a slider 8 installed at both ends of the left and right sides, so one mounting plate 9 corresponds to two linear guide rails 7.

[0038] The front end of the reset spring 15 is connected to the front end of the frame 3, and the rear end of the reset spring 15 is connected to the front end of the mounting plate 9. After the sensor probe 10 is inserted into the soil, as the frame 3 continues to move forward, the sensor probe 10 slides backward relative to the frame 3 and stretches the reset spring 15, thereby keeping the sensor probe 10 in the soil for a certain detection time. When the sensor probe 10 is pulled out of the soil, the reset spring 15 drives the mounting plate 9 to reset.

[0039] The mounting plate 9 is equipped with a drive mechanism that raises and lowers the sensor probe 10 of the soil nutrient rapid tester. The drive mechanism includes a guide box 12 fixed to the mounting plate 9, a positioning block 19 slidably connected to the guide box 12, and a block spring 21 that pushes the positioning block 19 backward. The guide box 12 is fixed to the rear of the mounting plate 9, and a vertical through-hole is opened in the guide box 12. The positioning block 19 is slidably connected to the mounting slot, and its rear end extends to the rear of the guide box 12.

[0040] In order to achieve the front and rear sliding connection of the positioning top block 19, a front and rear extending guide shaft 20 is fixedly connected inside the guide box 12. At least two guide shafts 20 are provided. The positioning top block 19 has a guide hole for inserting the guide shaft 20. The top block spring 21 is sleeved on the guide shaft 20.

[0041] The frame 3 is fixedly connected to a positioning beam 22 located behind the positioning top block 19. When the positioning top block 19 slides backward relative to the frame 3 along with the guide box 12, it moves to the rear end position, so that the positioning top block 19 touches the positioning beam 22, pressing down the positioning top block 19 and compressing the top block spring 21.

[0042] The drive mechanism also includes a drive gear 13 shafted within the guide housing 12 and a drive motor 14 that drives the drive gear 13 to rotate. The drive motor 14 is mounted on the mounting plate 9. The drive gear 13 is located in a mounting groove within the guide housing 12. The positioning block 19 and the drive gear 13 are arranged horizontally and horizontally, forming a guide channel between them to allow the rack 11 to slide vertically, thereby enabling the rack 11 to mesh with the drive gear 13 and achieving the lifting and lowering guidance of the rack 11.

[0043] The sensor probe 10 is fixed to the lower end of the rack 11, so the sensor probe 10 is raised and lowered by the raising and lowering of the rack.

[0044] The top block 19 is provided with a groove 23 that is adapted to the rack 11, and the side of the groove 23 is a transition slope.

[0045] After the positioning block 19 moves to the positioning beam 22 and is pressed down, the groove 23 moves to the back of the rack 11, causing the rack 11 to separate from the drive gear 13. This is because before the positioning block 19 is pressed down, it supports the back of the rack 11. When the positioning block 19 moves forward and the groove 23 moves to the back of the rack 11, the back of the rack 11 loses support, so the rack 11 and drive gear 13 can easily separate. The guide box 12 is equipped with an upper tension spring 18 that pulls the rack 11 upward. The upper tension spring 18 pulls the rack 11 upward, causing it to separate from the drive gear 13 and move upward.

[0046] The reason why the present invention uses the upper tension spring 18 to drive the rack 11 to move upward instead of using the drive motor 14 to drive it upward is mainly because the power of the drive motor 14 is not very large. This allows the sensor probe 10 to be inserted to different depths for different soil hardness. The speed at which the rack 11 is driven upward by the drive motor 14 is not as fast as the driving speed of the upper tension spring 18. Therefore, a structure is set up in which the rack 11 is separated from the drive gear 13 and then pulled upward by the upper tension spring 18.

[0047] A method for using a liquid organic fertilizer variable application device includes the following steps: a) Installing the frame 3 on a tractor and moving with the tractor, and using the plow blade 2 to achieve deep soil loosening; b) Pumping the fertilizer liquid in the liquid fertilizer tank 4 to the fertilizer outlet pipe, thereby discharging it into the soil behind the plow blade 2, and controlling the opening of the flow regulating valve by the soil hardness and nitrogen content detected by the soil testing agency, thereby controlling the amount of fertilizer applied;

[0048] c. When the soil testing mechanism is working, the drive motor 14 drives the drive gear 13 to rotate, and the drive gear 13 drives the rack 11 to slide downward, so that the sensor probe 10 of the soil nutrient rapid tester is inserted into the soil. The height of the sensor probe 10 is detected by the probe rangefinder 16 and the ground height is detected by the ground rangefinder 17, so as to obtain the depth of the sensor probe 10 inserted into the soil, and thus the hardness of the soil.

[0049] d. After the sensor probe 10 is inserted into the soil, as the frame 3 continues to move forward, the sensor probe 10 and the drive mechanism slide backward relative to the frame 3 and stretch the reset spring 15, thereby keeping the sensor probe 10 in the soil for a certain detection time.

[0050] e. After the positioning block 19 in the drive mechanism moves to the positioning beam 22, it is pressed down by the positioning beam 22, causing the groove 23 to move to the back of the rack 11. After the back of the rack 11 loses support, it separates from the drive gear 13 under the action of the upper tension spring 18 and moves upward quickly, thereby pulling the sensor probe 10 out of the soil. f. After the sensor probe 10 is pulled out of the soil, under the action of the reset tension spring 15, the sensor probe 10 and the drive mechanism slide forward relative to the frame 3 to achieve reset. At this time, the positioning block 19 separates from the positioning beam 22. The positioning block 19 is pushed backward by the top block spring 21, so that the positioning block 19 supports the back of the rack 11. The rack 11 re-meshes with the drive gear 13, which is convenient for the next detection.

[0051] Of course, the above description is not limited to the examples above. Technical features not described in this invention can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solutions of this invention and are not intended to limit this invention. This invention has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this invention do not depart from the spirit of this invention and should also fall within the scope of protection of the claims of this invention.

Claims

1. A variable-rate liquid organic fertilizer application device, characterized in that: The device includes a frame (3), a liquid fertilizer tank (4), a liquid pump, and multiple plow blades (2) fixed to the lower end of the frame (3). A fertilizer outlet pipe (1) is fixed to the back of the plow blade (2). The fertilizer outlet pipe (1) is connected to the liquid pump through a flow regulating valve. A soil testing mechanism is installed on the frame (3) in front of the plow blade (2). The soil testing mechanism includes a soil nutrient rapid tester, a mounting plate (9) that slides on the frame (3) from front to back, and a reset spring (15) that pulls the mounting plate (9) forward. The mounting plate (9) is equipped with a drive mechanism that drives the sensor probe (10) of the soil nutrient rapid tester to rise and fall. The soil testing mechanism also includes a probe rangefinder (16) for detecting the height of the sensor probe (10) and a ground rangefinder (17) for detecting the ground position. The drive mechanism includes a guide box (12) fixed to the mounting plate (9), a positioning block (19) slidably connected to the guide box (12), and a block spring (21) that pushes the positioning block (19) backward. A positioning beam (22) located behind the positioning block (19) is fixed to the frame (3). The drive mechanism also includes a drive gear (13) shafted in the guide box (12) and a drive motor (14) that drives the drive gear (13) to rotate. The positioning block (19) and the drive gear The wheels (13) are arranged on the left and right and form a guide channel between them to allow the rack (11) to slide vertically. The sensor probe (10) is fixed to the lower end of the rack (11). The positioning block (19) is provided with a groove (23) that matches the rack (11). After the positioning block (19) moves to the positioning beam (22) and is pressed down, the groove (23) moves to the back of the rack (11) to separate the rack (11) from the drive gear (13). The guide box (12) is equipped with an upper tension spring (18) that pulls the rack (11) upward. The method of using this liquid organic fertilizer variable application device includes the following steps: a. Install the frame (3) on the tractor and follow the tractor to achieve deep soil loosening through the plow blade (2); b. The liquid pump pumps the fertilizer liquid in the liquid fertilizer tank (4) to the fertilizer outlet pipe, thereby discharging it into the soil behind the plow blade (2). The opening of the flow regulating valve is controlled by the soil hardness and nitrogen content detected by the soil testing agency, thereby controlling the amount of fertilizer applied. c. When the soil testing mechanism is working, the drive motor (14) drives the drive gear (13) to rotate, and the drive gear (13) drives the rack (11) to slide downward, so that the sensor probe (10) of the soil nutrient rapid tester is inserted into the soil. The height of the sensor probe (10) is detected by the probe rangefinder (16), and the ground height is detected by the ground rangefinder (17), so as to obtain the depth of the sensor probe (10) inserted into the soil, and thus obtain the soil hardness. d. After the sensor probe (10) is inserted into the soil, as the frame (3) continues to move forward, the sensor probe (10) and the drive mechanism slide backward relative to the frame (3) and stretch the reset spring (15), thereby keeping the sensor probe (10) in the soil for a certain detection time. e. After the positioning block (19) in the drive mechanism moves to the positioning beam (22), it is pressed down by the positioning beam (22), causing the groove (23) to move to the back of the rack (11). After the back of the rack (11) loses support, it separates from the drive gear (13) under the action of the upper tension spring (18) and moves upward quickly, thereby pulling the sensor probe (10) out of the soil. f. After the sensor probe (10) is pulled out of the soil, under the action of the reset spring (15), the sensor probe (10) and the drive mechanism slide forward relative to the frame (3) to achieve reset. At this time, the positioning block (19) separates from the positioning beam (22). The positioning block (19) is pushed backward by the top block spring (21) so that the positioning block (19) supports the back of the rack (11). The rack (11) re-meshes with the drive gear (13) to facilitate the next detection.

2. The liquid organic fertilizer variable application device according to claim 1, characterized in that: The side of the groove (23) is a transition slope.

3. The liquid organic fertilizer variable application device according to claim 1, characterized in that: The guide box (12) is fixedly connected with a guide shaft (20) extending forward and backward, and the top block (19) is provided with a guide hole for inserting the guide shaft (20).

4. The liquid organic fertilizer variable application device according to claim 3, characterized in that: The top block spring (21) is sleeved on the guide pin (20).

5. The liquid organic fertilizer variable application device according to claim 1, characterized in that: The drive motor (14) is mounted on the mounting plate (9).

6. The liquid organic fertilizer variable application device according to claim 1, characterized in that: The frame (3) is fixed with a linear guide rail (7) extending forward and backward, and the mounting plate (9) is fixed with a slider (8) adapted to the linear guide rail (7).

7. The liquid organic fertilizer variable application device according to claim 1, characterized in that: The fertilizer outlet pipe (1) has a fertilizer outlet on its rear side, and the fertilizer outlet pipe (1) is connected to the back of the plow blade (2) by bolts.

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