Intelligent pesticide mixing and spraying system for agricultural planting and use method of intelligent pesticide mixing and spraying system

Abstract

The invention discloses an intelligent pesticide mixing and spraying system for agricultural planting and a use method of the intelligent pesticide mixing and spraying system. The system comprises a pesticide mixing and preparing module, a spraying execution module, a data acquisition module and a main control module, the medicine mixing and preparing module comprises a medicine storage unit and a medicine mixing driving unit, the medicine storage unit comprises a water tank, a first medicine storage box, a second medicine storage box and a mixed medicine liquid temporary storage box, and the medicine mixing driving unit comprises a peristaltic pump, a spiral medicine mixer mechanism, a water pumping diaphragm pump and a pressurizing centrifugal pump; the outlet end of the water tank is connected with the inlet end of the spiral medicine mixer mechanism through the water pumping diaphragm pump, the outlet end of the first medicine storage box and the outlet end of the second medicine storage box are connected with the inlet end of the spiral medicine mixer mechanism through the corresponding peristaltic pumps, and the outlet end of the spiral medicine mixer mechanism is connected with the mixed medicine liquid temporary storage box; the outlet end of the mixed liquid medicine temporary storage box is connected with the spraying execution module through a pressurizing centrifugal pump; according to the invention, mixed liquid medicine with a preset mixing ratio can be accurately prepared, and high-precision uniform mixing of the medicine and water is realized.

Description

Technical Field

[0001] The present invention belongs to the technical field of agricultural plant protection equipment, and in particular relates to an intelligent pesticide mixing spray system and method for agricultural planting. Background Art

[0002] With the continuous development of agricultural science and technology, agricultural mixing spray systems play multiple key roles in modern agricultural production due to their advantages such as precise application of pesticides, environmental protection and energy saving, and improved planting efficiency. Agricultural mixing spray systems are mainly composed of spray execution modules and mixing pharmaceutical modules.

[0003] In the existing technology, agricultural pesticide mixing spray systems have the following major technical problems. First, the pesticide mixing and drug manufacturing module currently mainly uses manual proportioning or mechanical mixing to mix and manufacture drugs. However, manual proportioning is highly dependent on the technician's empirical estimation of the volume ratio of the drug to water, which makes the proportioning accuracy unstable. The drug concentration error generally exceeds 5%. This may cause crop damage due to excessive dosage of drugs, or reduce the control effect due to insufficient dosage, resulting in resource waste and environmental pollution. Mechanical proportioning currently mostly uses static mixing mode (such as natural turbulence in pipelines), which is not enough for high-viscosity drugs (such as suspension concentrates and suspending concentrates) to mix uniformly, easily causing stratification or precipitation, directly affecting the uniformity of drug efficacy and thus affecting the application effect of crops. In addition, due to the low degree of automation of agricultural pesticide mixing spray systems, the pesticide mixing and drug manufacturing module needs to spend a lot of time to dynamically adjust the drug proportion or switch between different drug types, which makes it difficult to adapt to the current large-scale and continuous operation requirements of smart agriculture.

[0004] In the spray execution module, the technical shortcomings of pesticide spraying are also prominent, mainly reflected in the technical problems of difficulty in achieving both range and atomization effect and difficulty in system cleaning. The first is the problem of difficulty in achieving both range and atomization effect. At present, the range of conventional spray equipment (such as backpack sprayers and ordinary air-assisted sprayers) is mostly less than 30 meters, and expanding the spray range requires a significant increase in pump pressure or fan power. This setting will cause the droplet size to be too large, causing liquid loss or leaf burns. Although fine atomization solutions (such as centrifugal nozzles) can control the particle size to 50-100μm, the range is severely limited (<10 meters) and cannot cover large fields or orchard operation scenarios. Secondly, the problem of difficult system cleaning is that after the drug spraying is completed, the equipment's mixing pipelines and nozzles need to be cleaned. However, the current cleaning mode mainly uses one-way water flushing, and one-way water flushing often cannot remove the drug residue adhering to the gaps between the spiral mixer blades or inside the nozzle. Over time, the residue will dry and crystallize, which will clog and corrode the pipeline, reducing the service life of the system. Summary of the Invention

[0005] The purpose of the present invention is to overcome the shortcomings of the above-mentioned existing technologies and provide an intelligent drug mixing spray system for agricultural planting. The system can accurately prepare a mixed drug liquid with a preset mixing ratio through the effective cooperation of the main control module and the drug mixing and pharmaceutical module, and can also effectively improve the mixing uniformity of the mixed drug liquid, thereby achieving high-precision and uniform mixing of the drug and water. In addition, the system can achieve precise matching of the range and droplet particle size through the spray execution module, significantly improving the application efficiency and coverage.

[0006] Another object of the present invention is to provide a method for using an intelligent pesticide mixing spray system for agricultural planting.

[0007] In order to achieve the above object, the present invention can be achieved by adopting the following technical solutions:

[0008] An intelligent pesticide mixing and spraying system for agricultural planting, comprising: a pesticide mixing and preparation module, a spray execution module, a data acquisition module and a main control module;

[0009] The drug mixing and pharmaceutical manufacturing module includes a drug storage unit and a drug mixing drive unit. The drug storage unit includes a water tank, a first drug storage box, a second drug storage box, and a mixed drug liquid buffer box. The drug mixing drive unit includes a peristaltic pump, a spiral drug mixer mechanism, a water-pumping diaphragm pump, and a pressurized centrifugal pump. The drugs installed in the first drug storage box and the second drug storage box are both in liquid form.

[0010] The spiral medicine mixer mechanism includes a spiral medicine mixer, an elastic coupling and a stepping motor, wherein the stepping motor is connected to the spiral medicine mixer via the elastic coupling, and the stepping motor is used to drive the blades in the spiral medicine mixer to rotate;

[0011] The outlet end of the water tank is connected to the inlet end of the water-pumping diaphragm pump through a corresponding pipeline, and the outlet end of the water-pumping diaphragm pump is connected to the inlet end of the spiral medicine mixer. The outlet ends of the first medicine storage box and the second medicine storage box are both provided with peristaltic pumps, and the outlet ends of the first medicine storage box and the second medicine storage box are respectively connected to the inlet end of the spiral medicine mixer through corresponding peristaltic pumps, and the outlet end of the spiral medicine mixer is connected to the mixed medicine liquid cache box; the outlet end of the mixed medicine liquid cache box is connected to the spray execution module through the pressurized centrifugal pump;

[0012] The spray execution module is used to convert the mixed liquid in the mixed liquid cache box into liquid droplets and spray them to the target area;

[0013] The data acquisition module is used to collect the outlet flow data of the water tank, the first medicine storage box and the second medicine storage box, as well as the liquid level of the mixed medicine buffer box, and transmit them to the main control module;

[0014] The main control module is used to calculate the medicine flow rate and the clean water flow rate according to the set mixing ratio, and to regulate the operating conditions of the medicine mixing and pharmaceutical manufacturing module and the spray execution module in combination with the data collected by the data acquisition module.

[0015] Preferably, the spray execution module includes a base, a duct bracket, an atomizing duct mechanism, a pitch adjustment mechanism and a rotation adjustment mechanism; the atomizing duct mechanism includes a duct, an atomizing nozzle and a centrifugal fan, the centrifugal fan is fixedly installed at the rear end of the duct, the motor shaft of the centrifugal fan is equipped with blades, the air outlet of the duct is provided with a spray ring, and multiple atomizing nozzles are evenly installed on the spray ring, the bottom of the duct is provided with a mixed liquid interface, one end of the mixed liquid interface is connected to the pressurized centrifugal pump through a corresponding pipeline, and the other end of the mixed liquid interface is connected to multiple atomizing nozzles through a nozzle; the pitch adjustment mechanism includes a pitch adjustment motor, a supine drive member and a rotating shaft, the bottom of the duct The part is provided with a rotating hole, the wind tube is fixedly connected to the rotating shaft through the rotating hole, the rotating shaft is rotatably connected to the wind tube bracket, the supine driving member is installed at the bottom of the wind tube, the driving end of the pitch adjustment motor is connected to the supine driving member, and the pitch adjustment motor is used to drive the supine driving member to drive the wind tube to move up and down; the rotation adjustment mechanism includes a worm gear driving member and a rotation adjustment motor, the worm gear driving member is fixedly installed at the bottom of the wind tube bracket, the driving end of the rotation adjustment motor is connected to the worm gear driving member, the rotation adjustment motor is used to drive the wind tube bracket to rotate horizontally left and right, and the wind tube bracket is connected to the base through the worm gear driving member.

[0016] Preferably, the atomizing nozzle is a fan-shaped atomizing nozzle or a wide-area atomizing nozzle.

[0017] Preferably, the outlet cone angle of the fan-shaped atomizing nozzle is set to 70°-80°.

[0018] Preferably, the spiral medicine mixer mechanism includes a spiral medicine mixer, an elastic coupling and a stepping motor. The stepping motor is connected to the spiral medicine mixer via the elastic coupling, and the stepping motor is used to drive the blades in the spiral medicine mixer to rotate.

[0019] Preferably, the blade inclination angle of the spiral mixer is set to 50° to 60°.

[0020] Preferably, the blade pitch of the spiral medicine mixer is 60 mm, and the blade thickness of the spiral medicine mixer is 2 mm.

[0021] Preferably, the outlet ends of the first medicine storage box and the second medicine storage box are connected to corresponding peristaltic pumps through silicone tubes.

[0022] Preferably, a discharge valve is provided at the bottom of the mixed liquid cache box.

[0023] Preferably, a shock-absorbing rubber pad is provided at the bottom of the pump body of the pressurized centrifugal pump.

[0024] A method for using an intelligent pesticide mixing spray system for agricultural planting, using the intelligent pesticide mixing spray system for agricultural planting, comprising the following steps:

[0025] S1. According to the current crop planting conditions in the farmland, the main control module sets a mixing ratio, and the main control module starts and controls the operating speeds of the peristaltic pump, the diaphragm pump, and the stepping motor according to the mixing ratio;

[0026] S2, the data acquisition module collects the accumulated flow of clean water, the accumulated flow of the first medicine storage tank and the accumulated flow of the second medicine storage tank in real time, and uploads the collected data to the main control module;

[0027] S3, the main control module calculates the current mixing ratio according to the cumulative flow rate of the clean water, the cumulative flow rate of the medicine in the first medicine storage tank, and the cumulative flow rate of the medicine in the second medicine storage tank, and compares the current mixing ratio with the mixing ratio set in step S1 to adjust the rotation speed of the peristaltic pump and the water diaphragm pump;

[0028] S4, repeating step S3 until the mixed liquid medicine cache box has obtained the mixed liquid medicine that meets the mixing ratio, and the main control module stops the peristaltic pump and the diaphragm pump;

[0029] S5, the main control module starts the pressurized centrifugal pump to transport the liquid medicine in the mixed liquid buffer tank to the spray execution module to perform the spraying operation on the target farmland;

[0030] S6. When the spraying operation on the target farmland is completed, stopping the operation of the pressurized centrifugal pump;

[0031] S7, the main control module controls the diaphragm pump and the centrifugal fan to flush and dry the system;

[0032] Preferably, the specific steps of step S7 are as follows:

[0033] S71, opening the discharge valve of the mixed liquid medicine cache tank, starting the pressurizing centrifugal pump to reversely operate, and when no liquid medicine flows out of the discharge valve, stopping the pressurizing centrifugal pump and closing the discharge valve;

[0034] S72: Start the diaphragm pump to fill the mixed medicine solution cache tank with water. When the mixed medicine solution cache tank reaches a preset liquid level, stop the diaphragm pump and test the water quality in the mixed medicine solution cache tank.

[0035] S73, repeating step S72 until it is detected that the conductivity of the water in the mixed liquid buffer tank is less than a preset value, and then starting the pressurized centrifugal pump to switch the flow direction of the pipeline at a preset frequency, thereby utilizing the water hammer effect to remove the residue on the pipe wall;

[0036] S74, start the centrifugal fan and run it at maximum power for 1 minute to purge the residual water film in the pipeline, then stop the centrifugal fan to complete flushing and drying the system.

[0037] The present invention has the following advantages over the prior art:

[0038] (1) The intelligent drug mixing spray system for agricultural planting of the present invention can accurately prepare a mixed drug liquid with a preset mixing ratio through the effective cooperation of the main control module and the drug mixing and pharmaceutical module. Compared with the existing technology that relies on manual proportioning, resulting in a mixed drug liquid error generally exceeding 5%, the error of the mixed drug liquid prepared by this system is within 1%. In addition, the drug mixing and pharmaceutical module of the present invention adopts a dual mixing mechanism of a spiral drug mixer and a mixed drug liquid buffer box, so that the mixing uniformity of the configured mixed drug liquid is above 98%, achieving high-precision and uniform mixing of the drug and water.

[0039] (2) The intelligent mixed pesticide spray system for agricultural planting of the present invention can effectively enhance the range-atomization synergy through the spray execution module. The spray execution module enables technicians to replace different adjustable nozzles and the output power of the centrifugal fan according to the specific working environment through the effective coordination between the atomizing wind tube mechanism, the pitch adjustment mechanism and the rotation adjustment mechanism to adjust the spray droplet size and range. For example, when working in the field, a large-aperture nozzle and a high-speed mode of the fan can be selected, so that the system's spray range reaches 80 meters and the droplet size reaches 120 μm. When working in a greenhouse scene, it can be switched to a small-aperture nozzle and a low-speed mode of the centrifugal fan, so that the system's spray range reaches 30 meters and the droplet size reaches 60 μm, thereby significantly improving the application efficiency and coverage rate.

[0040] (3) The intelligent pesticide mixing spray system for agricultural planting of the present invention also has a cleaning function. Through the effective cooperation of the pressurized centrifugal pump, centrifugal fan and water-pumping diaphragm pump, the system pipeline can be flushed within 10 minutes, and more than 99.5% of the residues in the system pipeline can be removed, thereby overcoming the technical problem of crystallization blockage of the pipeline due to poor flushing effect in the prior art and improving the durability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a schematic diagram of the structure of an intelligent pesticide mixing spray system for agricultural planting provided in Example 1 of the present invention;

[0042] Figure 2A cross-sectional view of the structure of the spiral medicine mixer mechanism provided in Example 1 of the present invention in the first direction;

[0043] Figure 3 A cross-sectional view of the structure of the spiral medicine mixer mechanism provided in Example 1 of the present invention in the second direction;

[0044] Figure 4 This is a schematic diagram of the axonometric structure of the spray execution module provided in Example 1 of the present invention;

[0045] Figure 5 This is a left side view of the spray execution module provided in Example 1 of the present invention;

[0046] Figure 6 This is a flow chart of a method for using the intelligent pesticide mixing spray system for agricultural planting provided in Example 2 of the present invention.

[0047] Among them, 1 is the base, 2 is the air duct bracket, 3 is the atomizing air duct mechanism, 31 is the air duct, 32 is the atomizing nozzle, 33 is the centrifugal fan, 34 is the spray ring, 35 is the mixed liquid interface, 4 is the pitch adjustment mechanism, 41 is the supine drive member, 42 is the rotating shaft, 43 is the pitch adjustment motor, 5 is the rotation adjustment mechanism, 51 is the rotation adjustment motor, 6 is the spiral mixer mechanism, 61 is the spiral mixer, 611 is the spiral mixer inlet, 612 is the spiral mixer outlet, 613 is the spiral blade, 62 is the stepping motor, and 63 is the elastic coupling. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0049] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0050] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0051] Example 1

[0052] like Figure 1-Figure 5As shown, an intelligent pesticide mixing spray system for agricultural planting includes: a pesticide mixing and preparation module, a spray execution module, a data acquisition module and a main control module;

[0053] The drug mixing and pharmaceutical manufacturing module includes a drug storage unit and a drug mixing drive unit. The drug storage unit includes a water tank, a first drug storage box, a second drug storage box, and a mixed drug liquid buffer box. The drug mixing drive unit includes a peristaltic pump, a spiral drug mixer mechanism 6, a water-pumping diaphragm pump, and a pressurized centrifugal pump. The drugs installed in the first drug storage box and the second drug storage box are both in liquid form.

[0054] like Figure 2-Figure 3 As shown, the spiral medicine mixer mechanism 6 includes a spiral medicine mixer 61, an elastic coupling 63 and a stepping motor 62. The stepping motor 62 is connected to the spiral medicine mixer 61 through the elastic coupling 63. The stepping motor 62 is used to drive the blades in the spiral medicine mixer 61 to rotate.

[0055] The outlet end of the water tank is connected to the inlet end of the water-pumping diaphragm pump through a corresponding pipeline, and the outlet end of the water-pumping diaphragm pump is connected to the inlet end of the spiral medicine mixer 61. The outlet ends of the first medicine storage box and the second medicine storage box are both provided with peristaltic pumps, and the outlet ends of the first medicine storage box and the second medicine storage box are respectively connected to the inlet end of the spiral medicine mixer 61 through corresponding peristaltic pumps, and the outlet end of the spiral medicine mixer 61 is connected to the mixed medicine liquid cache box; the outlet end of the mixed medicine liquid cache box is connected to the spray execution module through the pressurized centrifugal pump;

[0056] Specifically, the spiral mixer mechanism 6 adjusts the rotation speed according to the difference of the mixed liquid medicine. The expression of the rotation speed is:

[0057]

[0058] Among them, N 混 is the speed, D 混 is the diameter of the mixer, L 混 is the effective mixing length.

[0059] In this embodiment, the blade pitch of the spiral medicine mixer 61 is 60 mm, the blade thickness is 2 mm, and the blade inclination angle is set to 50° to 60°.

[0060] Specifically, the peristaltic pump adopts a stepper motor driven peristaltic pump, and the outlet ends of the first medicine storage box and the second medicine storage box are connected to the corresponding peristaltic pump through silicone tubes. This setting is due to the high flow accuracy of the stepper motor driven peristaltic pump itself, thereby improving the accuracy of the system configuration of the mixed medicine liquid and reducing the ratio error rate of the mixed medicine liquid. In addition, the silicone tube is used as the connecting pipe to effectively prevent the corrosion of the medicine and improve the durability of the intelligent mixed medicine spray system for agricultural planting.

[0061] Specifically, a shock-absorbing rubber pad is provided at the bottom of the pump body of the pressurized centrifugal pump.

[0062] Specifically, a discharge valve is provided at the bottom of the mixed liquid cache box.

[0063] Specifically, the mixed medicine buffer box is provided with a conductivity sensor.

[0064] The spray execution module is used to convert the mixed liquid in the mixed liquid cache box into liquid droplets and spray them to the target area;

[0065] like Figure 4-Figure 5 As shown, the spray execution module includes a base 1, a wind tube bracket 2, an atomizing wind tube mechanism 3, a pitch adjustment mechanism 4 and a rotation adjustment mechanism 5; the atomizing wind tube mechanism 3 includes a wind tube 31, an atomizing nozzle 32 and a centrifugal fan 33, the centrifugal fan 33 is fixedly installed at the rear end of the wind tube 31, the motor shaft of the centrifugal fan 33 is installed with blades, the air outlet of the wind tube 31 is provided with a spray ring 34, and multiple atomizing nozzles 32 are evenly installed on the spray ring 34, and a mixed liquid interface 35 is provided at the bottom of the wind tube 31, one end of the mixed liquid interface 35 is connected to the pressurized centrifugal pump through a corresponding pipeline, and the other end of the mixed liquid interface 35 is connected to the multiple atomizing nozzles 32 through a nozzle; the pitch adjustment mechanism 4 includes a pitch adjustment motor 43, a supine drive member 41 and a rotating shaft 42, the A rotating hole is provided at the bottom of the wind tube 31, and the wind tube 31 is fixedly connected to the rotating shaft 42 through the rotating hole. The rotating shaft 42 is rotatably connected to the wind tube bracket 2. The supine driving member 41 is installed at the bottom of the wind tube 31, and the driving end of the pitch adjustment motor 43 is connected to the supine driving member 41. The pitch adjustment motor 43 is used to drive the supine driving member 41 to drive the wind tube 31 to move up and down; the rotation adjustment mechanism 5 includes a worm gear driving member and a rotation adjustment motor 51. The worm gear driving member is fixedly installed at the bottom of the wind tube bracket 2, and the driving end of the rotation adjustment motor 51 is connected to the worm gear driving member. The rotation adjustment motor 51 is used to drive the wind tube bracket 2 to rotate horizontally left and right. The wind tube bracket 2 is connected to the base 1 through the worm gear driving member.

[0066] In this embodiment, the atomizing nozzle 32 is a fan-shaped atomizing nozzle, the nozzle aperture of the fan-shaped atomizing nozzle is 0.5-1.5 mm, and the outlet cone angle of the fan-shaped atomizing nozzle is set to 70°-80°.

[0067] Specifically, the base 1 is made of aluminum alloy. This configuration can effectively enhance the durability of the base 1, thereby increasing the service life of the intelligent pesticide mixing spray system for agricultural planting.

[0068] Specifically, in this embodiment, the wind tube 31 is made of fiberglass, the length of the wind tube 31 is set to 1.2m, the outlet diameter is set to 300mm, and the air outlet of the wind tube 31 is inclined at 15° to the axis of the wind tube 31. This setting is to enhance the airflow guidance of the wind tube 31, thereby enhancing the system spray effect.

[0069] Specifically, the connecting pipe between the water-suction diaphragm pump and the pressurized centrifugal pump is made of food-grade silicone, the inner diameter of the connecting pipe is 25 mm, and the wall thickness is 2 mm.

[0070] The data acquisition module is used to collect the outlet flow data of the water tank, the first medicine storage box and the second medicine storage box, as well as the liquid level of the mixed medicine buffer box, and transmit them to the main control module;

[0071] The main control module is used to calculate the medicine flow rate and the clean water flow rate according to the set mixing ratio, and to regulate the operating conditions of the medicine mixing and pharmaceutical manufacturing module and the spray execution module in combination with the data collected by the data acquisition module.

[0072] Specifically, the main control module is provided with a human-computer interaction unit, and the human-computer interaction unit is used to set and display the mixing ratio and the data collected by the data collection module.

[0073] The working process of the intelligent pesticide mixing spray system for agricultural planting is as follows:

[0074] First, the staff sets the mixing ratio in the main control module. The main control module controls the corresponding peristaltic pump to extract the medicine from the first medicine storage box and the second medicine storage box according to the mixing ratio, and controls the water-pumping diaphragm pump to extract the clean water from the water tank and transport it to the spiral mixer mechanism 6. The mixed liquid after preliminary mixing is further turbulently sheared and mixed in the spiral mixer mechanism 6 to finally generate a mixed liquid and transport it to the mixed liquid cache box. When the mixed liquid cache box reaches a sufficient liquid level, the main control module controls the pressurized centrifugal pump to transport the mixed liquid in the mixed liquid cache box to the spray execution module, and uses the range-droplet particle size collaborative algorithm to control the spray execution module to spray the target farmland. After completing the spray operation, the main control module controls the water-pumping diaphragm pump to flush the pipes in the system, and uses the centrifugal fan 33 to air-dry the spray execution module, and then restores the intelligent mixed medicine spray system for agricultural planting to the hot standby state, waiting for the next work.

[0075] Specifically, in actual applications, the intelligent medicine mixing spray system for agricultural planting can place the same or different medicines in the first medicine storage box and the second medicine storage box according to actual needs. This setting can effectively enhance the applicability of the intelligent medicine mixing spray system for agricultural planting, and can also enable the first medicine storage box and the second medicine storage box to be independently switched at any time to prevent cross-contamination of medicines.

[0076] Example 2

[0077] like Figure 6 As shown, a method for using an intelligent pesticide mixing spray system for agricultural planting, using the intelligent pesticide mixing spray system for agricultural planting as described in Example 1, includes the following steps:

[0078] S1. According to the current crop planting conditions in the farmland, the main control module sets a mixing ratio, and the main control module starts and controls the operating speeds of the peristaltic pump, the diaphragm pump, and the stepping motor 62 according to the mixing ratio;

[0079] S2, the data acquisition module collects the accumulated flow of clean water, the accumulated flow of the first medicine storage tank and the accumulated flow of the second medicine storage tank in real time, and uploads the collected data to the main control module;

[0080] S3, the main control module calculates the current mixing ratio according to the cumulative flow rate of the clean water, the cumulative flow rate of the medicine in the first medicine storage tank, and the cumulative flow rate of the medicine in the second medicine storage tank, and compares the current mixing ratio with the mixing ratio set in step S1 to adjust the rotation speed of the peristaltic pump and the water diaphragm pump;

[0081] S4, repeating step S3 until the mixed liquid medicine cache box has obtained the mixed liquid medicine that meets the mixing ratio, and the main control module stops the peristaltic pump and the diaphragm pump;

[0082] S5, the main control module starts the pressurized centrifugal pump to transport the liquid medicine in the mixed liquid buffer tank to the spray execution module to perform the spraying operation on the target farmland;

[0083] S6. When the spraying operation on the target farmland is completed, stopping the operation of the pressurized centrifugal pump;

[0084] S7, the main control module controls the diaphragm pump and the centrifugal fan 33 to flush and dry the system;

[0085] Specifically, the specific steps of step S7 are as follows:

[0086] S71, opening the discharge valve of the mixed liquid medicine cache tank, starting the pressurizing centrifugal pump to reversely operate, and when no liquid medicine flows out of the discharge valve, stopping the pressurizing centrifugal pump and closing the discharge valve;

[0087] S72: Start the diaphragm pump to fill the mixed medicine solution cache tank with water. When the mixed medicine solution cache tank reaches a preset liquid level, stop the diaphragm pump and test the water quality in the mixed medicine solution cache tank.

[0088] S73, repeating step S72 until it is detected that the conductivity of the water in the mixed liquid buffer tank is less than a preset value, and then starting the pressurized centrifugal pump to switch the flow direction of the pipeline at a preset frequency, thereby utilizing the water hammer effect to remove the residue on the pipe wall;

[0089] S74, start the centrifugal fan 33 and run it at maximum power for 1 minute to purge the residual water film in the pipeline, then stop the centrifugal fan 33 to complete flushing and drying the system.

[0090] In summary, the intelligent drug mixing spray system for agricultural planting of the present invention can accurately prepare a mixed drug liquid with a preset mixing ratio through the effective cooperation of the main control module and the drug mixing and pharmaceutical module. Compared with the existing technology that relies on manual proportioning, resulting in a mixed drug liquid error generally exceeding 5%, the error of the mixed drug liquid prepared by this system is within 1%. In addition, the drug mixing and pharmaceutical module of the present invention adopts a dual mixing mechanism of a spiral drug mixer mechanism 6 and a mixed drug liquid buffer box, so that the mixing uniformity of the configured mixed drug liquid is above 98%, achieving high-precision and uniform mixing of the drug and water; in addition, the intelligent drug mixing spray system for agricultural planting of the present invention can effectively enhance the range-atomization synergy through the spray execution module, and the spray execution module effectively cooperates with the atomizing wind tube mechanism 3, the pitch adjustment mechanism 4 and the rotation adjustment mechanism 5, so that technicians can adjust the mixing uniformity according to the specific operation. Different adjustable nozzles and the output power of the centrifugal fan can be replaced in the industrial environment to adjust the droplet size and range of the spray. For example, when working in the field, a large-aperture nozzle and a high-speed mode of the fan can be selected to make the system's spray range reach 80 meters and the droplet size reach 120μm. When working in the greenhouse scene, it can be switched to a small-aperture nozzle and a low-speed mode of the centrifugal fan, so that the system's spray range reaches 30 meters and the droplet size reaches 60μm, thereby significantly improving the efficiency and coverage of pesticide application; the intelligent mixed drug spray system for agricultural planting of the present invention also has a cleaning function. Through the effective cooperation of the pressurized centrifugal pump, the centrifugal fan and the water-drawing diaphragm pump, the system's pipelines can be flushed in a short time, and more than 99.5% of the residues in the system pipelines can be removed, thereby overcoming the technical problem of the prior art that the pipelines are blocked by crystallization due to poor flushing effect, and improving the durability of the system.

[0091] In the description of the present invention, it should be noted that, unless otherwise expressly specified or agreed upon, the terms "disposed," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0092] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be considered as equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. An intelligent pesticide mixing spray system for agricultural planting, characterized in that: include: Drug mixing and pharmaceutical module, spray execution module, data acquisition module and main control module; The drug mixing and pharmaceutical manufacturing module includes a drug storage unit and a drug mixing drive unit. The drug storage unit includes a water tank, a first drug storage box, a second drug storage box, and a mixed drug liquid buffer box. The drug mixing drive unit includes a peristaltic pump, a spiral drug mixer mechanism, a water-pumping diaphragm pump, and a pressurized centrifugal pump. The drugs installed in the first drug storage box and the second drug storage box are both in liquid form. The spiral medicine mixer mechanism includes a spiral medicine mixer, an elastic coupling and a stepping motor, wherein the stepping motor is connected to the spiral medicine mixer via the elastic coupling, and the stepping motor is used to drive the blades in the spiral medicine mixer to rotate; The outlet end of the water tank is connected to the inlet end of the water-pumping diaphragm pump through a corresponding pipeline, and the outlet end of the water-pumping diaphragm pump is connected to the inlet end of the spiral medicine mixer. The outlet ends of the first medicine storage box and the second medicine storage box are both provided with peristaltic pumps, and the outlet ends of the first medicine storage box and the second medicine storage box are respectively connected to the inlet end of the spiral medicine mixer through corresponding peristaltic pumps, and the outlet end of the spiral medicine mixer is connected to the mixed medicine liquid cache box; the outlet end of the mixed medicine liquid cache box is connected to the spray execution module through the pressurized centrifugal pump; The spray execution module is used to convert the mixed liquid in the mixed liquid cache box into liquid droplets and spray them to the target area; The data acquisition module is used to collect the outlet flow data of the water tank, the first medicine storage box and the second medicine storage box, as well as the liquid level of the mixed medicine buffer box, and transmit them to the main control module; The main control module is used to calculate the medicine flow rate and the clean water flow rate according to the set mixing ratio, and to regulate the operating conditions of the medicine mixing and pharmaceutical manufacturing module and the spray execution module in combination with the data collected by the data acquisition module.

2. The intelligent pesticide mixing spray system for agricultural planting according to claim 1 is characterized in that: The spray execution module includes a base, a wind tube bracket, an atomizing wind tube mechanism, a pitch adjustment mechanism and a rotation adjustment mechanism; the atomizing wind tube mechanism includes a wind tube, an atomizing nozzle and a centrifugal fan, the centrifugal fan is fixedly installed at the rear end of the wind tube, the motor shaft of the centrifugal fan is equipped with blades, the air outlet of the wind tube is provided with a spray ring, and multiple atomizing nozzles are evenly installed on the spray ring, the bottom of the wind tube is provided with a mixed liquid interface, one end of the mixed liquid interface is connected to the pressurized centrifugal pump through a corresponding pipeline, and the other end of the mixed liquid interface is connected to multiple atomizing nozzles through a nozzle; the pitch adjustment mechanism includes a pitch adjustment motor, a supine drive member and a rotating shaft, the bottom of the wind tube is provided with a There is a rotating hole, and the air duct is fixedly connected to the rotating shaft through the rotating hole, and the rotating shaft is rotatably connected to the air duct bracket, the supine driving member is installed at the bottom of the air duct, and the driving end of the pitch adjustment motor is connected to the supine driving member, and the pitch adjustment motor is used to drive the supine driving member to drive the air duct to move up and down; the rotation adjustment mechanism includes a worm gear driving member and a rotation adjustment motor, and the worm gear driving member is fixedly installed at the bottom of the air duct bracket, and the driving end of the rotation adjustment motor is connected to the worm gear driving member, and the rotation adjustment motor is used to drive the air duct bracket to rotate horizontally left and right, and the air duct bracket is connected to the base through the worm gear driving member.

3. The intelligent pesticide mixing spray system for agricultural planting according to claim 2, characterized in that: The atomizing nozzle is a fan-shaped atomizing nozzle or a wide-area atomizing nozzle.

4. The intelligent pesticide mixing spray system for agricultural planting according to claim 1, characterized in that: The blade inclination angle of the spiral mixer is set to 50° to 60°.

5. The intelligent pesticide mixing spray system for agricultural planting according to claim 1 is characterized in that: The blade pitch of the spiral medicine mixer is 60 mm, and the blade thickness of the spiral medicine mixer is 2 mm.

6. The intelligent pesticide mixing spray system for agricultural planting according to claim 1, characterized in that: The outlet ends of the first medicine storage box and the second medicine storage box are connected to corresponding peristaltic pumps through silicone tubes.

7. The intelligent pesticide mixing spray system for agricultural planting according to claim 1, characterized in that: A discharge valve is provided at the bottom of the mixed medicine liquid buffer box.

8. The intelligent pesticide mixing spray system for agricultural planting according to claim 1, characterized in that: A shock-absorbing rubber pad is provided at the bottom of the pump body of the pressurized centrifugal pump.

9. A method for using an intelligent pesticide mixing spray system for agricultural planting, characterized in that: The intelligent pesticide mixing spray system for agricultural planting according to any one of claims 1 to 8 comprises the following steps: S1. According to the current crop planting conditions in the farmland, the main control module sets a mixing ratio, and the main control module starts and controls the operating speeds of the peristaltic pump, the diaphragm pump, and the stepping motor according to the mixing ratio; S2, the data acquisition module collects the accumulated flow of clean water, the accumulated flow of the first medicine storage tank and the accumulated flow of the second medicine storage tank in real time, and uploads the collected data to the main control module; S3, the main control module calculates the current mixing ratio according to the cumulative flow rate of the clean water, the cumulative flow rate of the medicine in the first medicine storage tank, and the cumulative flow rate of the medicine in the second medicine storage tank, and compares the current mixing ratio with the mixing ratio set in step S1 to adjust the rotation speed of the peristaltic pump and the water diaphragm pump; S4, repeating step S3 until the mixed liquid medicine cache box has obtained the mixed liquid medicine that meets the mixing ratio, and the main control module stops the peristaltic pump and the diaphragm pump; S5, the main control module starts the pressurized centrifugal pump to transport the liquid medicine in the mixed liquid buffer tank to the spray execution module to perform the spraying operation on the target farmland; S6. When the spraying operation on the target farmland is completed, stopping the operation of the pressurized centrifugal pump; S7. The main control module controls the water-pumping diaphragm pump and the centrifugal fan to flush and dry the system.

10. The method for using the intelligent pesticide mixing spray system for agricultural planting according to claim 1, characterized in that: The specific steps of step S7 are as follows: S71, opening the discharge valve of the mixed liquid medicine cache tank, starting the pressurizing centrifugal pump to reversely operate, and when no liquid medicine flows out of the discharge valve, stopping the pressurizing centrifugal pump and closing the discharge valve; S72: Start the diaphragm pump to fill the mixed medicine solution cache tank with water. When the mixed medicine solution cache tank reaches a preset liquid level, stop the diaphragm pump and test the water quality in the mixed medicine solution cache tank. S73, repeating step S72 until it is detected that the conductivity of the water in the mixed liquid buffer tank is less than a preset value, and then starting the pressurized centrifugal pump to switch the flow direction of the pipeline at a preset frequency, thereby utilizing the water hammer effect to remove the residue on the pipe wall; S74, start the centrifugal fan and run it at maximum power for 1 minute to purge the residual water film in the pipeline, then stop the centrifugal fan to complete flushing and drying the system.

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