CN209234760U - A drug mixing and drug supply system for a sprayer - Google Patents

Abstract

The present disclosure proposes a kind of spraying machines to mix medicine and medication delivery systems, it include: spray tank, liquid medicine mixing device, medicine-chest bottom stirring device are provided in the spray tank, the liquid medicine mixing device is connected to spray head, the mixing of medical fluid is realized using the liquid medicine mixing device and enters mixed liquid medicine jet in spray tank, mixed medical fluid a part is sprayed by spray head in the spray tank, and another part medical fluid flow to medicine-chest bottom stirring device；Wherein, the medicine-chest bottom stirring device is the anti-precipitating jet pipe of several apertures of gathering, medical fluid in spray tank constantly forms spray liquid flow from the aperture of anti-precipitating jet pipe from bottom to top and recycles outflow, so that the higher medical fluid of the concentration of spray tank bottom is floated, medical fluid is avoided to precipitate.The efficiency for mixing medicine is improved, keeps medical fluid mixing more uniform, improves pesticide drop adhesive ability, reduce the drift phenomenon of pesticide solution, to greatly improve the utilization rate of pesticide, reduce the cost of agricultural production.

Description

A drug mixing and drug supply system for a sprayer

technical field

The disclosure relates to the technical field of agricultural plant protection machinery, in particular to a sprayer mixing and feeding system.

Background technique

Agricultural plant protection machinery has greatly liberated the labor force in the process of planting agricultural crops, but the pesticide application technology is still at the level of large-capacity, large-droplet spraying technology, and the utilization efficiency of pesticides is not high.

At present, the utilization rate of pesticides is low, and the current situation of pesticide use is not optimistic. This is because the plant protection equipment is relatively backward, most of which are small and medium-sized manual knapsack sprayers. The backward equipment not only consumes a lot of labor, but also has low operating efficiency and low technical level, and cannot cope with the prevention and control of sudden pests and diseases, as well as large-scale orchards and gardens. homework.

With the development of technology, more and more new sprayers have appeared before people's eyes, but these sprayers still have the disadvantages of uneven mixing of pesticides, complex structure and high cost. The chemical liquid mixer plays an important role in mixing pesticides and maintaining the uniformity of pesticide concentration in the sprayer.

In large-scale spraying machines, a large amount of pesticide mixed liquid is required, and traditional pesticide spraying machines generally still use manual stirring and mixing. On the one hand, it poses a great threat to the health of machine operators; on the other hand, the mixing effect of the chemical solution is not good. During the spraying process, some types of chemical solutions may not be able to form a uniform and stable pesticide solution with water for a long time. , which will lead to uneven concentration of the chemical solution sprayed on the surface of the plant leaves during the spraying process of the chemical liquid, which may lead to poor pesticide application effect, and may cause serious phytotoxicity to the plants in severe cases. Therefore, the design and installation of the chemical liquid mixing system in the pesticide spraying machine is urgent.

Utility model content

In order to solve the deficiencies of the prior art, the implementation example of the present disclosure provides a sprayer drug mixing and drug supply system, which improves the efficiency of drug mixing, makes the drug liquid mix more uniform, thereby greatly improving the utilization rate of pesticides, Reduce the cost of agricultural production.

In order to achieve the above object, the application adopts the following technical solutions:

A drug mixing and drug supply system for a sprayer, comprising: a drug solution tank, a drug solution mixing device and a mixing device at the bottom of the drug tank are arranged in the drug solution tank, the drug solution mixing device is connected to a nozzle, and the drug solution is used to The liquid mixing device realizes the mixing of the liquid medicine and sprays the mixed liquid medicine into the liquid medicine tank, part of the mixed medicine liquid in the liquid medicine tank is sprayed out through the nozzle, and the other part of the liquid medicine flows to the stirring device at the bottom of the medicine tank ;

Wherein, the agitating device at the bottom of the medicine tank is an anti-sedimentation nozzle densely covered with several small holes, and the liquid medicine in the liquid medicine tank continuously forms a jet stream from the small holes of the anti-sedimentation nozzle and circulates out, so that The medicine solution with higher concentration at the bottom of the medicine solution tank floats up to avoid precipitation of the medicine solution.

In a further technical solution, the liquid medicine tank is also connected to a residual liquid medicine discharge device, and the residual liquid medicine discharge device includes a discharge pipe connected to the liquid medicine tank, and a two-position two-way solenoid valve is arranged on the discharge pipe, The suspended end of the discharge pipe is a discharge port.

In a further technical solution, the liquid medicine tank is also connected to a diaphragm pump, and the diaphragm pump is respectively connected to the liquid inlet tank, the anti-sedimentation nozzle, and the two-position three-way solenoid valve, and the two-position three-way solenoid valve is also connected to the To the liquid medicine mixing device and the pilot type pressure control valve.

In a further technical solution, the liquid inlet end of the anti-sedimentation nozzle is connected to a diaphragm pump, and a check valve is provided on the connecting pipeline between the diaphragm pump and the anti-sedimentation nozzle.

In a further technical solution, the chemical liquid mixing device includes a chemical liquid mixer, the upper end of the chemical liquid mixer is connected to the pesticide liquid inlet funnel, and the lower end of the chemical liquid mixer is connected to the chemical liquid tank through the bottom pesticide discharge pipe , the bottom pesticide discharge pipe is provided with a two-position two-way solenoid valve, and the pesticide liquid mixer also sprays the mixed pesticide to the chemical liquid tank through the pesticide spray pipe, and the pesticide spray pipe reaches the chemical liquid The upper part of the mixer cavity.

In a further technical solution, the pesticide nozzle is connected with a thin and long nozzle with densely distributed small holes, and the long and thin nozzle and the liquid medicine mixer are installed together in the medicine box. Under the action of pressure, the initially diluted pesticide liquid , Spray evenly into the liquid medicine tank through the slender nozzle densely covered with small holes.

In a further technical solution, the liquid medicine mixer is divided into upper and lower parts, the upper cover of the liquid medicine mixer and the lower chamber cover of the liquid medicine mixer at the lower part together form a cavity, and the upper and lower parts and the medicine mixing device The mounting plate is connected by bolts, and a rubber sealing washer is installed between the upper and lower parts.

In a further technical solution, the upper end of the chemical liquid mixer is connected to the pesticide liquid inlet funnel through a pesticide funnel tube, and a manual ball valve switch and a one-way valve are sequentially arranged on the pesticide funnel tube.

In a further technical solution, the upper cover of the liquid medicine mixer is respectively provided with a diaphragm pump liquid inlet and a pesticide liquid inlet;

The pesticide liquid inlet passes through the pesticide liquid inlet pipe, and the pesticide liquid inlet pipe communicates with the pesticide funnel pipe, and the pesticide liquid inlet pipe descends to the bottom of the overall inner cavity of the liquid medicine mixer;

The liquid inlet of the diaphragm pump passes through the liquid inlet pipe of the liquid medicine mixer, and the liquid inlet pipe of the liquid medicine mixer communicates with the liquid pipe of the diaphragm pump, and the liquid inlet pipe of the diaphragm pump is connected to the two-position three-way solenoid valve. The liquid inlet pipe of the liquid medicine mixer goes down to the bottom of the whole inner cavity of the liquid medicine mixer.

A further technical solution is to install a one-way valve with a spring between the liquid inlet pipe of the diaphragm pump and the liquid medicine mixer liquid inlet pipe.

The implementation example of the present disclosure also discloses a working method of a sprayer drug mixing and drug supply system, including:

Mixing stage: Pour a suitable volume of pesticide stock solution into the pesticide stock solution inlet funnel, turn on the manual ball valve switch, and the pesticide stock solution enters the lower chamber of the agitator through the one-way valve; then the diaphragm pump works, and the two-position three-way solenoid valve is energized. The liquid inlet of the solenoid valve is connected to the liquid inlet pipe of the pesticide mixer, and a part of clean water enters the cavity of the liquid medicine mixer, and the pesticide stock solution at the bottom of the mixer cavity is washed up to make it evenly mixed for the first time. The pesticide nozzle flows through the slender nozzle and sprays evenly into the pesticide medicine box; the other part of the clean water enters the medicine box through the anti-sedimentation nozzle densely covered with small holes;

Spray stage: the diaphragm pump works, the two-position three-way solenoid valve is powered off, and a part of the pesticide liquid flow delivered by the diaphragm pump is sent to the spray nozzles distributed on both sides of the sprayer after the pressure is adjusted by the pilot pressure control valve; the other part of the pesticide liquid flow is sprayed. The liquid continuously circulates out from the small hole of the anti-sedimentation nozzle to avoid the precipitation of the liquid medicine;

Cleaning stage: After spraying, inject clean water into the chemical solution tank, the diaphragm pump works, and the anti-sedimentation nozzle continuously sprays clean water from bottom to top to clean the chemical tank; the two-position three-way solenoid valve is energized, and the diaphragm pump mixes with the chemical solution again The liquid medicine mixer nozzle continuously sprays clean water into the medicine mixing device from top to bottom to quickly clean the medicine cartridge; the waste water from cleaning the medicine liquid mixer is discharged into the medicine liquid tank through the pesticide discharge pipe at the bottom;

Draining stage: After cleaning, the chemical solution tank is connected to the discharge port to discharge the cleaning solution.

Compared with the prior art, the beneficial effects of the present disclosure are:

The structure of the present invention is simple, and due to the optimization of the structure, the cycle of parts manufacturing is also reduced, thereby reducing the cost to a certain extent. It improves the efficiency of pesticide mixing, makes the mixing of liquid medicine more uniform, improves the adhesion ability of pesticide droplets, and reduces the drift phenomenon of pesticide liquid, thereby greatly improving the utilization rate of pesticides and reducing the cost of agricultural production.

The anti-sedimentation nozzle of the present disclosure is densely covered with many small holes, and the anti-sedimentation nozzle sprays liquid flow from bottom to top, so that the liquid with high concentration at the bottom of the liquid medicine tank floats up, thereby fully stirring the liquid medicine, so that the liquid medicine quickly reaches uniform and stable state.

Description of drawings

The accompanying drawings constituting a part of the present application are used to provide further understanding of the present application, and the schematic embodiments and descriptions of the present application are used to explain the present application, and do not constitute improper limitations to the present application.

Fig. 1 is the overall schematic diagram of the sprayer of one or more implementation examples of the present application;

Fig. 2 is the flow chart of mixing medicine and spraying system of one or more implementation examples of the present application;

Fig. 3 is a hydraulic system and a schematic diagram of one or more implementation examples of the present application;

Fig. 4 is the assembly diagram of the drug mixing device of one or more implementation examples of the present application;

Fig. 5 is a cross-sectional view of a drug mixing device of one or more embodiments of the present application;

Fig. 6 is a schematic diagram of an anti-sedimentation nozzle of one or more embodiments of the present application;

In the figure, 1 liquid inlet tank, 2 drug mixing device, 3 drug liquid tank, 4 nozzle, 5 diaphragm pump, 6 two-position three-way solenoid valve, 7 pilot pressure control valve, 8 first one-way valve, 9 first Two-position two-way solenoid valve, 10 second one-way valve, 11 manual ball valve switch, 12 pesticide inlet funnel, 13 third one-way valve, 14 second two-position two-way solenoid valve, 15 discharge port, 16 pesticide funnel tube , 17 Pesticide liquid inlet pipe, 18 Chemical liquid mixer upper cover, 19 Bolts, 20 Chemical liquid mixer lower cavity, 21 Pesticide spray pipe, 22 Pesticide discharge pipe, 23 Rubber sealing gasket, 24 Chemical liquid mixer liquid inlet pipe, 25 diaphragm pumping liquid pipe, 26 drug mixing device mounting plate, 27 anti-sedimentation spray pipe.

Detailed ways

It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and/or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and/or combinations thereof.

In a typical implementation of the present application, a pesticide mixing and feeding system for a sprayer is provided. The system integrates pesticide stirring, pesticide delivery, medicine box cleaning, and liquid discharge. It has a simple structure, is convenient to process, and improves The efficiency of pesticide use reduces the cost of agricultural production.

The three-dimensional schematic diagram and system flow chart of the sprayer mixing and feeding system are shown in Figures 1 and 2, including the liquid inlet tank, the liquid medicine tank, the liquid medicine mixing device, the stirring device at the bottom of the medicine tank, the residual liquid medicine discharge device, and the diaphragm pump , Two-position three-way solenoid valve, pilot-operated pressure control valve, nozzle. The liquid medicine mixing device can mix clear water and pesticide evenly; the stirring device at the bottom of the liquid medicine tank prevents the liquid medicine from settling; the residual liquid discharge device is used to discharge cleaning waste water.

A liquid medicine mixing device and a liquid medicine anti-sedimentation device are installed in the medicine liquid tank; a two-position three-way solenoid valve and a pilot pressure control valve are installed between the medicine liquid mixing device and the atomizing nozzle; A three-position solenoid valve connects the liquid medicine mixing device with the diaphragm pump to realize the purpose of cleaning the inner wall of the medicine tank and the liquid medicine mixing device; a two-position two-way solenoid valve is set at the bottom of the liquid medicine tank to control whether the liquid medicine tank is connected to the outside world , so as to control the discharge of residual liquid or cleaning liquid.

The hydraulic system is shown in Figure 3, including a liquid medicine mixing device 2, a liquid medicine tank 3, an atomizing nozzle 4, a diaphragm pump 5, a two-position three-way solenoid valve 6, a pilot pressure control valve 7, and a first one-way valve 8 , the first two-position two-way solenoid valve 9, the second one-way valve 10, the manual ball valve switch 11, the funnel for feeding the pesticide stock solution 12, the third one-way valve 13, the second two-position two-way solenoid valve 14, inside the medicine box Liquid medicine discharge port 15, pesticide nozzle 21 densely covered with small holes, bottom pesticide discharge pipe 22, anti-sedimentation nozzle 27 densely covered with small holes. Among them, the role of the diaphragm pump 5 is to transport clean water and pesticides; the role of the two-position three-way solenoid valve 6 is to switch the different liquid flows of clear water and pesticides; the role of the pilot pressure control valve 7 is to control the flow of pesticides , to ensure that the flow remains unchanged; the function of the one-way valve is to prevent the liquid from flowing back due to excessive pressure; the function of the two-position two-way solenoid valve is to discharge the cleaning liquid; the nozzles 4 are distributed on both sides of the sprayer, and there are six on one side Sprinklers for spraying pesticides on plants.

The liquid medicine mixing device 2 is shown in Figure 4 and Figure 5, comprises pesticide liquid inlet funnel 12, manual ball valve switch 11, pesticide funnel pipe 16, one-way valve 10, the pesticide liquid inlet pipe 17 that passes through the liquid medicine mixer loam cake , Chemical liquid mixer upper cover 18, bolts 19, chemical liquid mixer lower cavity 20, pesticide nozzle 21, bottom pesticide discharge pipe 22, rubber sealing gasket 23, chemical liquid mixer liquid inlet pipe 24, first one-way valve 8. Diaphragm pump liquid pipe 25, drug mixing device mounting plate 26.

The liquid medicine mixer is designed as a three-way cavity structure, which is divided into upper and lower parts. The upper part is the upper cover of the liquid medicine mixer, which has an upper chamber, and the lower part is the lower chamber of the liquid medicine mixer. The upper and lower parts are covered together to form a large chamber for preliminary dilution of pesticides.

The upper and lower parts and the mixing device mounting plate 26 are connected by bolts 19, and rubber sealing gaskets 23 are installed to ensure good sealing of the joints when the mixer is working.

The upper cover of the liquid medicine mixer is designed with two ports, which are respectively the liquid inlet of the diaphragm pump and the liquid inlet of the pesticide. Install a manual ball valve switch 11 and a downward one-way second check valve 10 between the pesticide liquid inlet funnel 12 and the pesticide liquid mixer upper cover pesticide liquid inlet pipe 17; internal pressure, while ensuring that the liquid medicine will not reversely overflow from the pesticide liquid inlet due to the high pressure in the liquid medicine mixer; a spring with a spring is installed between the liquid inlet pipe 25 of the diaphragm pump and the liquid inlet pipe 24 of the liquid medicine mixer. The first one-way valve 8 prevents the backflow of the liquid medicine that may be caused by the sloshing of the residual liquid in the mixer due to the shaking of the box during the medicine mixing process or the spraying process; the liquid medicine mixer liquid inlet pipe 24 is lowered to the whole medicine liquid mixer At the bottom of the inner cavity, when the diaphragm pump 5 is energized, the high-speed water flow of the diaphragm pump liquid pipe 25 goes down to the liquid medicine mixer liquid pipe 24 to wash up the pesticide stock solution in the lower chamber of the mixer and quickly dilute it. Pesticide stock solution.

The pesticide spray pipe 21 in the lower chamber of the liquid medicine mixer protrudes upwards to the upper part of the inner chamber of the liquid medicine mixer. Through such a structural design, the pesticide stock solution can be better preliminarily diluted; It is discharged through the pesticide nozzle 21. The pesticide nozzle 21 is connected with a long and thin nozzle with densely covered small holes. The nozzle and the liquid medicine mixer are installed together in the liquid medicine tank. The spray pipe evenly sprays into the liquid medicine tank for further mixing of pesticides; the bottom chamber of the liquid medicine mixer is also designed with a bottom pesticide discharge pipe 22 and goes down to the bottom of the liquid medicine tank, and is connected with a first two-position two-way electromagnetic Valve 9, discharges the residual pesticide at the bottom of the pesticide mixing device during the cleaning stage.

The bottom of the liquid medicine tank is equipped with a liquid medicine mixer, which also has the function of preventing precipitation of the liquid medicine. In the spraying stage, a part of the pesticide provided by the diaphragm pump 5 flows through the nozzle, and the other part flows through the anti-sedimentation nozzle 27. As shown in Figure 6, the anti-sedimentation nozzle is densely covered with many small holes, and the anti-sedimentation nozzle flows through the anti-sedimentation nozzle. And the liquid flow is sprayed upwards, so that the liquid medicine with higher concentration at the bottom of the liquid medicine tank floats up, so as to fully stir the medicine liquid, so that the medicine liquid can quickly reach a uniform and stable state.

In another typical implementation of the present application, the working process of the drug mixing and drug supply system of the sprayer is divided into four stages, namely the drug mixing stage, the spraying stage, the cleaning stage and the discharging stage.

(1) Mixing stage: Pour a suitable volume of pesticide stock solution into the pesticide stock solution inlet funnel 12, open the manual ball valve switch, and the pesticide stock solution enters the lower cavity of the liquid medicine mixer through the second one-way valve 10; then the diaphragm pump 5 Work, the two-position three-way solenoid valve 6 is energized, the solenoid valve is in the right position, the liquid inlet of the solenoid valve is connected to the liquid inlet pipe 25 of the pesticide mixer for conveying clean water, and a part of clean water enters the liquid medicine mixer through the first one-way valve 8 In the cavity, the pesticide stock solution at the bottom of the liquid medicine mixer cavity is quickly washed up to make it evenly mixed for the first time. Since both the first one-way valve 8 and the second one-way valve 10 are both one-way valves, the first, second, and second are both one-way valves. The solenoid valve 9 is not conducting, and the pesticide mixture can only be sprayed into the pesticide liquid tank evenly through the pesticide nozzle 21 located in the chemical liquid tank through the slender nozzle; The pipe 27 enters the liquid medicine tank 3; since the anti-precipitation nozzle 27 responsible for the stirring of the liquid medicine is located at the bottom of the liquid medicine tank and the gravity of the liquid medicine in the tank may flow back through the stirring nozzle, the third one-way valve 13 is designed to prevent the liquid medicine from Backflow.

(2) Spray stage: Diaphragm pump 5 works, two-position three-way solenoid valve 6 is powered off, and the solenoid valve is in the left position. A part of the pesticide liquid flow delivered by the diaphragm pump is sent to the distributor after the pressure is adjusted by the pilot pressure control valve 7. The nozzles 4 on both sides of the sprayer are sprayed; the other part of the liquid medicine is continuously circulated out from the small holes of the anti-precipitation nozzle 27 to avoid precipitation of the liquid medicine and ensure uniform concentration of the medicine liquid. During the spraying process, the anti-sedimentation nozzle at the bottom of the liquid medicine tank continues to work to prevent the liquid medicine from settling after the liquid medicine is mixed.

(3) Cleaning stage: after spraying, inject clean water into the liquid medicine tank, the diaphragm pump 5 works, and the anti-sedimentation nozzle 27 continuously sprays clean water from bottom to top to clean the medicine tank; the two-position three-way solenoid valve 6 is energized, and the electromagnetic The valve is in the right position, the diaphragm pump is connected to the pesticide mixer again, and the spray pipe of the pesticide mixer continuously sprays clean water into the drug mixing device from top to bottom to quickly clean the drug cartridge; at the same time, the second two-position two-way solenoid valve 9 is energized, The solenoid valve is turned on, and the waste water for cleaning the medicine mixing device is discharged into the liquid medicine tank 3 through the pesticide discharge pipe 22 at the bottom.

(4) Discharging stage: after cleaning, the second two-position two-way solenoid valve 14 is energized, the solenoid valve is in the left position, the liquid medicine tank is connected to the discharge port 15, and the cleaning liquid is discharged.

The technical solution in the implementation example of the present disclosure makes the sprayer replace a large amount of labor in the process of mixing the medicine, saves labor costs, and at the same time reduces the probability of pesticide safety hazards; makes the medicine liquid mix more uniformly, and enhances the effect of pesticide application , improve agricultural productivity, and reduce the risk of pests and diseases; at the same time, the disclosure has a simple structure, is convenient to manufacture, and saves a lot of production costs.

The above descriptions are only preferred embodiments of the present application, and are not intended to limit the present application. For those skilled in the art, there may be various modifications and changes in the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included within the protection scope of this application.

Claims (10)

1. A medicine mixing and medicine supply system for a sprayer, characterized in that it comprises: a liquid medicine tank, a liquid medicine mixing device and a stirring device at the bottom of the medicine tank are arranged in the liquid medicine tank, and the liquid medicine mixing device is connected to The spray head, using the liquid medicine mixing device to realize the mixing of the liquid medicine and spray the mixed liquid medicine into the liquid medicine tank, part of the liquid medicine mixed in the liquid medicine tank is sprayed out through the spray head, and the other part of the liquid medicine flows To the stirring device at the bottom of the medicine box; Wherein, the agitating device at the bottom of the medicine tank is an anti-sedimentation nozzle densely covered with several small holes, and the liquid medicine in the liquid medicine tank continuously forms a jet stream from the small holes of the anti-sedimentation nozzle and circulates out, so that The medicine solution with higher concentration at the bottom of the medicine solution tank floats up to avoid precipitation of the medicine solution. 2. A sprayer medicine mixing and medicine supply system according to claim 1, characterized in that, the medicine solution tank is also connected to a residual medicine liquid discharge device, and the residual medicine liquid discharge device includes a The discharge pipe of the tank is provided with a two-position two-way solenoid valve, and the suspended end of the discharge pipe is a discharge port. 3. A drug mixing and drug supply system for a sprayer as claimed in claim 1, wherein the drug solution tank is also connected to a diaphragm pump, and the diaphragm pump is respectively connected to the liquid inlet tank and the anti-sedimentation nozzle , Two-position three-way solenoid valve, the two-position three-way solenoid valve is also respectively connected to the liquid medicine mixing device and the pilot pressure control valve. 4. The drug mixing and drug supply system for a sprayer as claimed in claim 1, wherein the liquid inlet end of the anti-sedimentation nozzle is connected to the diaphragm pump, and the connection between the diaphragm pump and the anti-sedimentation nozzle A one-way valve is installed on the pipeline. 5. A sprayer medicine mixing and medicine supply system as claimed in claim 1, characterized in that, the medicine liquid mixing device comprises a medicine liquid mixer, and the upper end of the medicine liquid mixer is connected to the pesticide liquid inlet funnel , the lower end of the liquid medicine mixer is connected to the liquid medicine tank through the bottom pesticide discharge pipe, and the bottom pesticide discharge pipe is provided with a two-position two-way solenoid valve, and the liquid medicine mixer also passes the pesticide spray pipe after mixing The pesticide is sprayed to the liquid medicine tank, and the pesticide spray pipe goes up to the upper part of the inner cavity of the liquid medicine mixer. 6. A kind of sprayer medicine mixing and medicine supplying system as claimed in claim 5, it is characterized in that, described pesticide nozzle is connected with the thin and long and thin nozzle of densely distributed small holes, and the long and thin and long nozzle and liquid medicine mixer are connected Installed together in the medicine box, under the action of pressure, the pre-diluted pesticide solution is evenly sprayed into the medicine solution box through the slender nozzle with densely distributed small holes. 7. A medicine mixing and medicine supply system for a sprayer as claimed in claim 5, wherein the medicine liquid mixer is divided into upper and lower parts, and the upper medicine liquid mixer upper cover is mixed with the medicine liquid in the lower part. The lower chamber cover of the device forms a chamber together, and the upper and lower parts and the mounting plate of the mixing device are connected by bolts, and a rubber sealing gasket is installed between the upper and lower parts. 8. A kind of sprayer medicine mixing and medicine supply system as claimed in claim 5, it is characterized in that, the upper end of described liquid medicine mixer is connected with pesticide funnel by pesticide funnel tube, and described pesticide funnel tube A manual ball valve switch and a one-way valve are arranged in turn on the top. 9. A drug mixing and drug supply system for a sprayer as claimed in claim 5, wherein the liquid medicine mixer upper cover is respectively provided with a diaphragm pump liquid inlet and a pesticide liquid inlet; The pesticide liquid inlet passes through the pesticide liquid inlet pipe, and the pesticide liquid inlet pipe communicates with the pesticide funnel pipe, and the pesticide liquid inlet pipe descends to the bottom of the overall inner cavity of the liquid medicine mixer; The liquid inlet of the diaphragm pump passes through the liquid inlet pipe of the liquid medicine mixer, and the liquid inlet pipe of the liquid medicine mixer communicates with the liquid pipe of the diaphragm pump, and the liquid inlet pipe of the diaphragm pump is connected to the two-position three-way solenoid valve. The liquid inlet pipe of the liquid medicine mixer goes down to the bottom of the whole inner cavity of the liquid medicine mixer. 10. A medicine mixing and medicine supply system for a sprayer as claimed in claim 9, characterized in that, a spring-loaded spring is installed between the liquid inlet pipe of the diaphragm pump and the liquid medicine mixer liquid pipe. to the valve.