Multifunctional pesticide sprayer capable of achieving accurate proportioning and use method of multifunctional pesticide sprayer

Abstract

The invention discloses an accurate-proportioning multifunctional pesticide sprayer, and relates to the technical field of spraying devices.The accurate-proportioning multifunctional pesticide sprayer comprises a liquid storage tank, a pesticide spraying device, a pesticide spraying device and a pesticide spraying device, the pesticide spray head is connected with the pesticide outlet; a pesticide outlet pipe is connected to the pesticide storage box, an electromagnetic valve is arranged in the pesticide outlet pipe, and the pesticide storage box comprises a liquid pesticide box used for containing liquid pesticide and a granular pesticide box used for containing granular pesticide; the concentration sensor is fixedly arranged at the bottom in the liquid storage tank; and the controller is fixedly arranged on the liquid storage tank, and the concentration sensor and the electromagnetic valve are both connected with the controller. The concentration sensor is installed at the bottom of the liquid storage tank, the pesticide proportioning concentration in the liquid storage tank is detected in real time, meanwhile, pesticide adding is controlled through the electromagnetic valve, the pesticide adding amount is accurately controlled, the pesticide applying concentration is accurately controlled, and the pesticide applying quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of spraying devices, and in particular to a multifunctional pesticide sprayer with precise proportioning and a use method thereof. Background Art

[0002] Before spraying pesticides on crops, pesticides and water need to be mixed according to a certain ratio to maximize the effectiveness of pesticides. Currently, pesticide sprayers on the market basically do not have the function of automatically mixing pesticides. Operators are often required to mix them manually. The manual mixing concentration is often not very accurate. Too high a concentration will burn the crops. When the concentration is too low, the pesticide cannot exert its best effect, and the purpose of weeding and pest control cannot be achieved, resulting in a waste of liquid medicine. At the same time, the dissolution rate of pesticides in water is too slow and uneven, which affects the effect of pesticides. Agricultural water is usually taken from nearby water, and there are still many insect eggs, microorganisms, etc. in the water used, which may cause nozzle blockage during spraying, affecting the spraying efficiency, and also causing secondary damage to crops. The residual liquid medicine on the inner wall of the medicine box interferes with the efficacy of the new medicine, and even seriously harms the growth of crops, causing economic losses. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the disadvantages of the prior art and provide a multifunctional pesticide sprayer with precise proportioning and a method for using the same.

[0004] In order to solve the above technical problems, the technical solution of the present invention is as follows: A multifunctional pesticide sprayer with precise proportion, comprising: A liquid storage tank, on which a water inlet, a medicine outlet and a water outlet are provided; A pesticide spray head connected to the pesticide outlet through a pipeline; A medicine storage box is fixedly arranged on the liquid storage tank, the medicine storage box is connected to a medicine outlet pipe, and a solenoid valve is arranged in the medicine outlet pipe, the outlet end of the medicine outlet pipe extends into the liquid storage tank, and the medicine storage box includes a liquid medicine box for containing liquid pesticides and a granular medicine box for containing granular pesticides; A concentration sensor is fixedly arranged at the bottom of the liquid storage tank; And, a controller is fixedly arranged on the liquid storage tank, the concentration sensor and the solenoid valve are both connected to the controller, and the controller is used to receive the pesticide concentration signal transmitted by the concentration sensor and control the opening and closing of the solenoid valve according to the pesticide concentration signal.

[0005] As a preferred solution of the multifunctional pesticide sprayer with precise proportioning described in the present invention, at least two stirring devices are arranged at the bottom of the liquid storage tank, at least two stirring devices are evenly arranged at the bottom of the liquid storage tank, and the stirring devices are electrically connected to the controller.

[0006] As a preferred embodiment of the multifunctional pesticide sprayer with precise proportioning described in the present invention, a filtering device is provided at the water injection port, and the filtering device comprises a filter cartridge and a filter element and a filter disc fixedly arranged in the filter cartridge, the filter cartridge is in a hollow cylindrical shape, and the axis of the filter cartridge coincides with the axis of the filter cartridge, at least two filter discs are provided, and are arranged in sequence along the axis direction of the filter cartridge, the filter disc is arranged perpendicular to the filter cartridge, and a plurality of water filtering holes are evenly provided on the side wall and bottom of the filter cartridge and the filter disc.

[0007] As a preferred solution of the multifunctional pesticide sprayer with precise proportioning of the present invention, a slide groove extending along the axis direction of the filter cartridge is opened on the inner side of the filter cartridge, a slider is arranged on the side of the filter disc, and the slider is slidably arranged in the slide groove.

[0008] As a preferred solution of the multifunctional pesticide sprayer with precise proportioning of the present invention, the filter element is a cellulose filter element.

[0009] As a preferred embodiment of the multifunctional pesticide sprayer with precise proportioning described in the present invention, a water pump is arranged at the bottom of the liquid storage tank, and the water outlet end of the water pump is connected to a water pipe, the other end of the water pipe extends to the top of the liquid storage tank, the water outlet end of the water pipe is coaxially and fixedly connected with an upper sleeve, the lower end of the upper sleeve is coaxially and fixedly connected with a connecting pipe, the lower end of the connecting pipe is coaxially and fixedly connected with a lower sleeve, bearings are fixedly arranged in both the upper sleeve and the lower sleeve, a rotator is arranged in the connecting pipe, the upper and lower ends of the rotator are respectively connected to the bearings arranged in the upper sleeve and the lower sleeve, and the lower end of the rotator is fixedly connected with a cleaning nozzle via an adapter.

[0010] As a preferred embodiment of the multifunctional pesticide sprayer with precise proportioning of the present invention, the rotator comprises a tube body and a spiral blade fixedly arranged in the tube body, the axis of the tube body coincides with the axis of the connecting tube, and the axis of the spiral blade coincides with the axis of the tube body.

[0011] As a preferred embodiment of the multifunctional pesticide sprayer with precise proportioning of the present invention, the cleaning nozzle comprises a main pipe coaxial with and fixedly connected to the adapter, a plurality of branch pipes connected to the main pipe, and a nozzle assembly connected to the end of each branch pipe.

[0012] The present invention also provides a method for using a multifunctional pesticide sprayer with a precise proportion, comprising: Filling water into the liquid storage tank through the water filling port, and filtering the water added into the liquid storage tank through the filtering device; The standard concentration of the pesticide is set by the controller, and the solenoid valve is controlled by the controller to open, so that the pesticide in the medicine storage box enters the liquid storage tank, and then the stirring device is controlled to stir; The concentration of pesticides is detected in real time through the concentration sensor, and the solenoid valve is controlled to close when the pesticide concentration reaches the standard concentration; Spraying pesticides.

[0013] As a preferred embodiment of the method for using the multifunctional pesticide sprayer with precise proportioning of the present invention, after spraying the pesticide, the method further comprises: Control the stirring device to stop running; Inject clean water into the liquid storage tank through the water injection port, and filter the water added into the liquid storage tank through the filtering device; The clean water in the liquid storage tank is transported to the water pipe through the water pump, so that the clean water flows into the connecting pipe. When the clean water enters the connecting pipe, the clean water impacts the spiral blades in the rotor, driving the rotor to rotate, and then driving the cleaning nozzle to rotate, so as to clean the inner wall of the liquid storage tank; After cleaning, open the drain and drain the sewage.

[0014] The beneficial effects of the present invention are: (1) The present invention installs a concentration sensor at the bottom of the liquid storage tank to detect the concentration of the pesticide ratio in the liquid storage tank in real time. At the same time, the addition of pesticide is controlled by the solenoid valve to accurately control the amount of pesticide added, so that the concentration of the pesticide can be accurately controlled, thereby improving the quality of the drug use.

[0015] (2) The present invention is equipped with a filtering device at the water injection port, which can filter impurities and some microorganisms in the water, thereby preventing large suspended matter in the water from clogging the nozzle during the spraying process, affecting the use efficiency, and improving production efficiency.

[0016] (3) The present invention cleans the inside of the liquid storage tank through the nozzle on the top of the liquid storage tank, which is convenient for direct use next time, improves the use efficiency, and reduces the influence of the residual liquid on the purity of the next pesticide ratio. Strict control of the liquid concentration ratio is more conducive to crop growth and improves the quality of agricultural products. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0018] Figure 1 A schematic diagram of the structure of the multifunctional pesticide sprayer with precise proportioning provided by the present invention; Figure 2 A schematic diagram of the internal structure of the multifunctional pesticide sprayer with precise proportioning provided by the present invention; Figure 3 A schematic diagram of the structure of the upper end of the multifunctional pesticide sprayer with precise proportioning provided by the present invention; Figure 4 A schematic diagram of the structure of the lower end of the multifunctional pesticide sprayer with precise proportioning provided by the present invention; Figure 5 A side cross-sectional view of the bottom of the multifunctional pesticide sprayer with precise proportioning provided by the present invention; Figure 6 A side cross-sectional view of the upper inner end of the multifunctional pesticide sprayer with precise proportioning provided by the present invention; Figure 7 for Figure 6 The enlarged schematic diagram of point A in the middle; Figure 8 A cross-sectional schematic diagram of a filtering device in a multifunctional pesticide sprayer with precise proportioning provided by the present invention; Fig. 9 for Figure 2 The enlarged schematic diagram of point B in the middle; Fig.10 for Figure 7 The enlarged schematic diagram of the center C; Among them: 1. Liquid storage tank; 2. Water inlet; 3. Controller; 4. Drain; 5. Handle; 6. Stirring device; 7. Filter device; 8. Cleaning nozzle; 9. Liquid medicine box; 10. Granular medicine box; 11. Battery; 12. Water pump; 13. Filter element; 14. Connecting pipe; 15. Concentration sensor; 16. Bearing; 17. Rotator; 18. Filter disc; 19. Water pipe; 20. Solenoid valve; 21. Medicine outlet pipe; 22. Upper sleeve; 23. Lower sleeve; 24. Adapter; 25. Spiral blade. DETAILED DESCRIPTION

[0019] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below according to specific implementation modes and in combination with the accompanying drawings.

[0020] Figure 1 A schematic diagram of the structure of a multifunctional pesticide sprayer with precise proportioning provided in an embodiment of the present application. The device comprises a liquid storage tank 1, a pesticide spray head, a medicine storage box, a concentration sensor 15 and a controller 3. The concentration sensor 15 can monitor the concentration of the pesticide in the liquid storage tank 1 in real time, and control the opening and closing of the medicine storage box through the controller 3, thereby accurately controlling the accuracy of the pesticide.

[0021] Specifically, a water injection port is provided at the upper end of the liquid storage tank 1, and a drug outlet and a drain port 4 are provided at the lower part of the liquid storage tank 1. Water for mixing with pesticides or clean water for cleaning the liquid storage tank 1 can be injected into the liquid storage tank 1 through the water injection port. The drug outlet is connected to the pesticide spray head through a pipeline, and the pesticide in the liquid storage tank 1 can be sprayed out through the pipeline and the pesticide spray head through a drug pump to achieve pesticide spraying.

[0022] Better, see Figure 1 A handle 5 is provided on the pipe between the medicine outlet and the pesticide spray head for the user to hold to control the direction of pesticide spraying.

[0023] The medicine storage box is fixedly installed on the upper part of the liquid storage tank 1. The medicine storage box includes a liquid medicine box 9 and a granular medicine box 10. The liquid medicine box 9 and the granular medicine box 10 are respectively located on both sides of the liquid storage tank 1. The liquid medicine box 9 is used to contain liquid pesticides, and the granular medicine box 10 is used to contain granular pesticides. The bottom of each medicine storage box is connected to a medicine outlet pipe 21, and the lower end of the medicine outlet pipe 21, that is, the medicine outlet end, extends into the liquid storage tank 1. A solenoid valve 20 is provided in the medicine outlet pipe 21 for controlling the conduction or closure of the medicine outlet pipe 21. The solenoid valve 20 can be used to control whether the pesticide in the medicine storage box enters the liquid storage tank 1.

[0024] The concentration sensor 15 is fixedly installed at the bottom of the liquid storage tank 1 , and can monitor the concentration of the pesticide in the liquid storage tank 1 in real time.

[0025] The controller 3 is fixedly mounted on one side of the liquid storage tank 1. In this embodiment, the controller 3 includes a control panel and a single chip microcomputer, through which the type of pesticide added and the concentration of the liquid ratio can be set. The above-mentioned solenoid valve 20 and concentration sensor 15 are both connected to the controller 3. The concentration sensor 15 can transmit the detected pesticide concentration signal to the controller 3, and the controller 3 determines whether pesticide needs to be added according to the received pesticide signal, and then controls the operation of the solenoid valve 20.

[0026] Preferably, in order to ensure the mixing effect of the pesticide and water in the liquid storage tank 1, two stirring devices 6 are further provided at the bottom of the liquid storage tank 1. The two stirring devices 6 are evenly arranged at the bottom of the liquid storage tank 1, which can drive the liquid in the liquid storage tank 1 to flow quickly, thereby accelerating the dissolution efficiency of the pesticide and making the pesticide fully and evenly dissolved.

[0027] See also Figure 2 , Figure 3 as well as Figure 8, a filter device 7 is provided at the water injection port. The filter device 7 comprises a hollow truncated cone-shaped filter cartridge with one end open, a filter disc 18 and a filter element 13 installed in the filter cartridge. The open end of the filter cartridge is the lower bottom end of the truncated cone, that is, the end with a larger diameter. An external thread is provided at the upper part of the open end of the filter cartridge. Correspondingly, an internal thread matching it is provided at the lower end of the water injection port, so that the filter cartridge is threadedly installed at the lower end of the water injection port. Several water filter holes are evenly provided on the side wall and the bottom of the filter cartridge. The filter element 13 is hollow cylindrical and fixedly provided in the middle of the filter cartridge, and the axis of the filter element 13 coincides with the axis of the filter cartridge. In this embodiment, the filter element 13 adopts a cellulose filter element 13, which can remove impurities such as suspended matter, silt, rust, etc. in the water, thereby preventing impurities in the water from clogging the pesticide sprayer during the pesticide spraying process. The filter disc 18 is a cylindrical ceramic sheet, on which several water filter holes are evenly provided. The filter disc 18 can filter out some microorganisms in the water, thereby improving the water quality and avoiding affecting the ratio concentration when the pesticide is mixed.

[0028] Preferably, a slide groove is provided on both opposite sides of the filter cartridge, and the slide groove extends from the upper end to the lower end of the filter cartridge, that is, extends along the axis direction of the filter cartridge. Correspondingly, a slider matching the slide groove is provided on the side of the filter disc 18. By sliding the slider in the slide groove, the filter disc 18 can be driven to rise and fall in the filter cartridge, so that the filter disc 18 can be installed and removed. Since the filter cartridge is truncated, the filter disc 18 will be clamped in the filter cartridge after it is lowered to a certain height, so that the position of the filter disc 18 is fixed.

[0029] In this embodiment, two filter discs 18 are provided, and the diameters of the two filter discs 18 are different, so the two filter discs 18 are located at different heights after being installed in the filter cartridge, and the two filter discs 18 are perpendicular to the axis of the filter cartridge.

[0030] In addition, a filter 18 is also provided in the pipeline between the pesticide outlet and the pesticide spray head to further filter impurities, thereby improving the spraying efficiency.

[0031] A micro water pump 12 is provided at the bottom of the liquid storage tank 1, and a water pipe 19 is connected to the water outlet of the water pump 12. The water pipe 19 is located in the interlayer inside the liquid storage tank 1. The other end of the water pipe 19 extends to the top of the liquid storage tank 1. An upper sleeve 22 is fixedly connected to the water outlet of the water pipe 19, and the upper sleeve 22 is coaxially arranged with the water pipe 19. The upper sleeve 22 and the water pipe 19 are connected by threads. A connecting pipe 14 is connected to the lower end of the upper sleeve 22, and the connecting pipe 14 is coaxially arranged with the upper sleeve 22. The connecting pipe 14 and the upper sleeve 22 are also connected by threads. A lower sleeve 23 is connected to the lower end of the connecting pipe 14, and the lower sleeve 23 is coaxially arranged with the connecting pipe 14. The lower sleeve 23 and the connecting pipe 14 are also connected by threads. Thrust bearings 16 are arranged in the upper sleeve 22 and the lower sleeve 23, and a rotator 17 is arranged in the connecting pipe 14. Figure 7 The rotator 17 includes a tube body and a spiral blade 25 fixedly arranged in the tube body. The axis of the tube body coincides with the axis of the connecting tube 14, and the axis of the spiral blade 25 coincides with the axis of the tube body. The upper and lower ends of the tube body are respectively connected to the bearings 16 in the upper sleeve 22 and the lower sleeve 23, so that the tube body can rotate around its own axis. A cleaning nozzle 8 is fixedly connected to the lower end of the tube body through an adapter 24.

[0032] When it is necessary to clean the inside of the liquid storage tank 1, clean water can be injected into the liquid storage tank 1 through the water injection port. The water pump 12 sucks the clean water at the bottom of the liquid storage tank 1 into the connected water pipe 19, and transports it along the water pipe 19 and flows into the connecting pipe 14. When the water flows into the connecting pipe 14, the clean water hits the spiral blade 25 of the rotator 17, driving the rotator 17 to rotate, and then driving the cleaning nozzle 8 to rotate, so that the clean water is evenly sprayed on the inner wall of the liquid storage tank 1 to clean the inner wall of the liquid storage tank 1.

[0033] In this embodiment, the cleaning nozzle 8 comprises a main pipe coaxially and fixedly connected to the adapter 24, and two branch pipes are connected to the main pipe body, and the two branch pipes are symmetrically arranged in the vertical direction. A nozzle assembly is installed at the end of each branch pipe.

[0034] In addition, a battery 11 is installed on one side of the bottom of the liquid storage tank 1, which is used to supply power to equipment such as the concentration sensor 15, the controller 3 and the stirring device 6.

[0035] Referring to the figure, the embodiment of the present application also provides a method for using a multifunctional pesticide sprayer with a precise ratio, and the method specifically comprises the following steps: Step S101: injecting water into the liquid storage tank 1 through the water injection port, and filtering the water added into the liquid storage tank 1 through the filtering device 7; Step S102: setting the standard concentration of the pesticide through the controller 3, and controlling the solenoid valve 20 to open through the controller 3, so that the pesticide in the medicine storage box enters the liquid storage tank 1, and then controlling the stirring device 6 to stir; Step S103: Detect the concentration of the pesticide in real time through the concentration sensor 15, and control the solenoid valve 20 to close after the pesticide concentration reaches the standard concentration; Step S104: spraying the pesticide until the spraying is completed.

[0036] Step S105: After the pesticide spraying is completed, the stirring device 6 is controlled to stop running.

[0037] Step S106: inject clean water into the liquid storage tank 1 through the water injection port, and filter the water added into the liquid storage tank 1 through the filtering device 7.

[0038] Step S107: The clean water in the liquid storage tank 1 is transported to the water pipe 19 through the water pump 12, so that the clean water flows into the connecting pipe 14. When the clean water enters the connecting pipe 14, the clean water impacts the spiral blade 25 in the rotator 17, driving the rotator 17 to rotate, and then driving the cleaning nozzle 8 to rotate, so as to clean the inner wall of the liquid storage tank 1. Step S107: After cleaning is completed, the drain port 4 is opened to discharge the sewage.

[0039] Therefore, the technical solution of the present application installs a concentration sensor 15 at the bottom of the liquid storage tank 1 to detect the concentration of the medicine, accurately control the amount of pesticide added, and improve the quality of the medicine. After injection, the pesticide is fully and evenly dissolved in the water through the stirring of the bottom agitator, and the dissolution rate of the pesticide is also improved. A filter device 7 is installed at the water inlet of the liquid storage tank 1 to filter microorganisms and larger suspended matter in the water, improve the quality of water use, and prevent larger suspended matter in the water from clogging the nozzle during the pesticide spraying process. After the spraying is completed, the residual liquid medicine inside the box is cleaned through the internal nozzle, which is convenient for direct use next time, improves the use efficiency, and prevents the residual liquid medicine from affecting the purity of the next pesticide ratio.

[0040] In addition to the above embodiments, the present invention may also have other implementation modes; any technical solutions formed by equivalent replacement or equivalent transformation shall fall within the protection scope required by the present invention.

Claims

1. A multifunctional pesticide sprayer with precise proportioning, characterized in that: include: A liquid storage box (1) is provided with a water inlet, a medicine outlet and a water outlet (4); A pesticide spray head connected to the pesticide outlet through a pipeline; A medicine storage box is fixedly arranged on the liquid storage box (1), the medicine storage box is connected to a medicine outlet pipe (21), and a solenoid valve (20) is arranged in the medicine outlet pipe (21), and the outlet end of the medicine outlet pipe (21) extends into the liquid storage box (1), and the medicine storage box comprises a liquid medicine box (9) for containing liquid pesticides and a granular medicine box (10) for containing granular pesticides; A concentration sensor (15) is fixedly arranged at the bottom of the liquid storage tank (1); And, a controller (3) is fixedly arranged on the liquid storage tank (1), the concentration sensor (15) and the solenoid valve (20) are both connected to the controller (3), and the controller (3) is used to receive the pesticide concentration signal transmitted by the concentration sensor (15) and control the opening and closing of the solenoid valve (20) according to the pesticide concentration signal.

2. The multifunctional pesticide sprayer with precise proportioning according to claim 1, characterized in that: At least two stirring devices (6) are arranged at the bottom of the liquid storage tank (1); at least two stirring devices (6) are evenly arranged at the bottom of the liquid storage tank (1); and the stirring devices (6) are electrically connected to the controller (3).

3. The multifunctional pesticide sprayer with precise proportioning according to claim 2, characterized in that: A filter device (7) is provided at the water inlet, and the filter device (7) comprises a filter cartridge, a filter element (13) and a filter disc (18) fixedly arranged in the filter cartridge, the filter element (13) being in the shape of a hollow cylinder, and the axis of the filter element (13) coincides with the axis of the filter cartridge, at least two filter discs (18) are provided, and are arranged in sequence along the axis direction of the filter cartridge, the filter disc (18) is arranged perpendicular to the filter element (13), and a plurality of water filtering holes are evenly provided on the side wall and bottom of the filter cartridge and the filter disc (18).

4. The multifunctional pesticide sprayer with precise proportioning according to claim 3 is characterized in that: The inner side of the filter cartridge is provided with a slide groove extending along the axial direction of the filter cartridge, and a sliding block is provided on the side of the filter plate (18), and the sliding block is slidably arranged in the slide groove.

5. The multifunctional pesticide sprayer with precise proportioning according to claim 3, characterized in that: The filter element (13) is a cellulose filter element (13).

6. The multifunctional pesticide sprayer with precise proportioning according to claim 4, characterized in that: A water pump (12) is arranged at the bottom of the liquid storage tank (1), and a water outlet end of the water pump (12) is connected to a water pipe (19), the other end of the water pipe (19) extends to the top of the liquid storage tank (1), the water outlet end of the water pipe (19) is coaxially and fixedly connected to an upper shaft sleeve (22), the lower end of the upper shaft sleeve (22) is coaxially and fixedly connected to a connecting pipe (14), and the lower end of the connecting pipe (14) is coaxially and fixedly connected to the upper shaft sleeve (22). A lower shaft sleeve (23) is connected, bearings (16) are fixedly arranged in the upper shaft sleeve (22) and the lower shaft sleeve (23), a rotator (17) is arranged in the connecting pipe (14), the upper end and the lower end of the rotator (17) are respectively connected to the bearings (16) arranged in the upper shaft sleeve (22) and the lower shaft sleeve (23), and the lower end of the rotator (17) is fixedly connected to the cleaning nozzle (8) through an adapter (24).

7. The multifunctional pesticide sprayer with precise proportioning according to claim 6, characterized in that: The rotator (17) comprises a tube body and a spiral blade (25) fixedly arranged in the tube body, the axis of the tube body coincides with the axis of the connecting tube (14), and the axis of the spiral blade (25) coincides with the axis of the tube body.

8. The multifunctional pesticide sprayer with precise proportioning according to claim 7, characterized in that: The cleaning nozzle (8) comprises a main pipe coaxially fixedly connected to the adapter (24), a plurality of branch pipes connected to the main pipe, and a nozzle assembly connected to the end of each branch pipe.

9. A method for using the multifunctional pesticide sprayer with precise proportioning according to claim 8, characterized in that: include: Filling water into the liquid storage tank (1) through the water filling port, and filtering the water added into the liquid storage tank (1) through the filtering device (7); The standard concentration of the pesticide is set by the controller (3), and the solenoid valve (20) is controlled by the controller (3) to open, so that the pesticide in the medicine storage box enters the liquid storage tank (1), and then the stirring device (6) is controlled to stir; The concentration of the pesticide is detected in real time by a concentration sensor (15), and the electromagnetic valve (20) is controlled to close when the concentration of the pesticide reaches a standard concentration; Spraying pesticides.

10. The multifunctional pesticide sprayer with precise proportioning according to claim 9, characterized in that: After spraying the pesticide, the method further comprises: Controlling the stirring device (6) to stop running; Injecting clean water into the liquid storage tank (1) through the water injection port, and filtering the water added into the liquid storage tank (1) through the filtering device (7); The clean water in the liquid storage tank (1) is transported to the water pipe (19) through the water pump (12), so that the clean water flows into the connecting pipe (14), and when the clean water enters the connecting pipe (14), the clean water impacts the spiral blades (25) in the rotor (17), drives the rotor (17) to rotate, and then drives the cleaning nozzle (8) to rotate, so as to clean the inner wall of the liquid storage tank (1); After cleaning is completed, open the drain port (4) to drain the dirty water.

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