Engine waste heat driven azeotrope high-pressure ejector pesticide spraying device and method

Abstract

This invention discloses a high-pressure ejector spraying device and method for azeotropic working fluids driven by engine waste heat. The device includes: an internal combustion engine with an internal exhaust pipe; a working fluid heating mechanism located in the waste heat area of ​​the internal combustion engine, utilizing the waste heat from the exhaust pipe; and a high-pressure ejector mechanism whose outlet is connected to the outlet of the working fluid heating mechanism to eject the generated azeotropic mixture high-pressure steam. The central shaft of the blower body within the high-pressure ejector mechanism is connected to the drive shaft of the internal combustion engine to increase the blower body's rotational speed. This device overcomes the problems of complex independent burner structures, high failure rates of ignition and fuel supply systems, and susceptibility to flameout, backfire, and carbon buildup in traditional fogging equipment, resulting in poor operational stability. Furthermore, the burner continuously consumes gasoline, leading to high energy consumption and operating costs.

Description

Technical Field

[0001] This invention relates to the field of agricultural plant protection machinery technology, specifically to a high-pressure ejector pesticide spraying device and method driven by engine waste heat using an azeotropic working fluid. Background Technology

[0002] Existing hot foggers and misting machines generally use independent gasoline burners as a heat source to heat and vaporize water, oil, or alcohol media, thereby forming a high-pressure airflow that carries pesticides for spraying. This type of traditional equipment has the following significant drawbacks: 1. The independent burner structure of the fogging machine is complex, and the failure rate of the ignition system and oil supply system is high. Under the bumpy working conditions in the field, problems such as flameout, backfire, and carbon buildup are prone to occur, resulting in poor working stability. 2. Independent burners require continuous gasoline consumption, resulting in high energy consumption, high operating costs, and poor economic efficiency; 3. Existing fogging machines have limited range and cannot effectively spray pesticides on tall and dense crops such as durian trees and eucalyptus trees, resulting in low work efficiency; Although existing water mist machines abroad can achieve long range by using high-pressure fans in conjunction with spray structures, this structure consumes a lot of water, resulting in short operating time, and also has the problem of coarse spray particles.

[0003] To address the aforementioned issues, this invention eliminates the need for an independent burner and utilizes the waste heat from the engine as the heat source. Furthermore, it leverages the engine to provide driving force for the fan, thereby increasing the fan's speed and ensuring a high-range spraying effect. The pesticide spraying is completed through an ejector structure, achieving stable, low-cost, and energy-saving plant protection operations. Summary of the Invention

[0004] To address the aforementioned technical problems, the purpose of this invention is to overcome the following issues in existing fogging machines: complex independent burner structure, high failure rate of ignition and fuel supply systems, susceptibility to flameout, backfire, and carbon buildup under bumpy field conditions, resulting in poor operational stability; the independent burner requires continuous gasoline consumption, leading to high energy consumption, high operating costs, and poor economic efficiency; and the existing fogging machines have limited range, making them unable to effectively spray pesticides onto tall, dense crops such as durian and eucalyptus trees, resulting in low work efficiency. Therefore, this invention provides an engine waste heat-driven azeotropic high-pressure ejector pesticide spraying device and method that eliminates the need for an independent burner, utilizes engine waste heat as a heat source, and uses the engine to drive the fan, thereby increasing the fan speed and ensuring a high-range effect. The pesticide spraying is completed through an ejector structure, achieving stable, low-cost, and energy-saving plant protection operations.

[0005] To achieve the above objectives, the present invention provides a high-pressure ejector pesticide spraying device driven by engine waste heat using an azeotropic working fluid, the device comprising: An internal combustion engine, which has an internal exhaust pipe; The working fluid heating mechanism is located in the waste heat area of ​​the internal combustion engine and uses the waste heat of the exhaust gas in the exhaust pipe of the internal combustion engine for heating. The high-pressure ejector mechanism has its outlet connected to the outlet of the working fluid heating mechanism to eject the generated azeotropic mixture high-pressure steam, and the central shaft of the blower body in the high-pressure ejector mechanism is connected to the drive shaft of the internal combustion engine to increase the rotational speed of the blower body.

[0006] Preferably, the internal combustion engine is further provided with a cylinder liner water circulation loop, and the working fluid heating mechanism also utilizes the residual heat of the cylinder liner water in the cylinder liner water circulation loop for heating.

[0007] Preferably, the working fluid heating mechanism includes: Waste heat collection sleeve, installed on the internal combustion engine, is used to collect waste heat from the exhaust gas of the exhaust pipe of the internal combustion engine and / or the cylinder liner water of the cylinder liner water circulation loop. The working fluid heating coil is installed inside the waste heat collection sleeve. Its inlet is connected to the working fluid tank containing the working fluid liquid, and its outlet is connected to the outlet of the high-pressure ejector mechanism and the outlet of the liquid pipe.

[0008] Preferably, a pressure stabilizing pipe is also provided between the outlet of the working fluid heating coil and the outlet of the high-pressure ejector mechanism to regulate the pressure of the vaporized working fluid liquid.

[0009] Preferably, the high-voltage ejector mechanism includes: The fan unit has its internal fan body connected to the drive shaft of the internal combustion engine via a belt pulley transmission unit. The ejector barrel unit has its inlet end connected to the air outlet of the blower unit, and the jet direction at its outlet end can be adjusted by rotation along the vertical and / or horizontal plane.

[0010] Preferably, the fan body is a high-pressure centrifugal fan, wherein the high-pressure centrifugal fan, after being accelerated by a belt pulley transmission unit, has a rotational speed exceeding 5000 r / s, and the high-pressure centrifugal fan generates a wind pressure exceeding 7000 Pa.

[0011] Preferably, the device further includes: The internal combustion engine and the high-pressure ejector mechanism are both mounted on the mobile support frame.

[0012] Preferably, the device further includes: The pesticide box is connected to the pesticide ejection port at the outlet end of the ejector tube unit via a pipeline.

[0013] The present invention also provides a spraying method for a high-pressure ejector pesticide spraying device driven by engine waste heat, the method comprising: The waste heat of exhaust gas and / or cylinder liner water of an internal combustion engine is recovered using a working fluid heating mechanism. The working fluid liquid introduced into the working fluid heating coil is heated to generate azeotropic mixed working fluid high-pressure steam; The high-pressure ejector mechanism generates a high-pressure airflow, which forms a negative pressure with the azeotropic mixture high-pressure steam ejected from the outlet to draw in, mix, and atomize the pesticide in the pesticide ejector nozzle before spraying it out.

[0014] Preferably, the blower body in the high-pressure ejector mechanism is a high-pressure centrifugal blower, wherein the high-pressure centrifugal blower, after being accelerated by the belt pulley transmission unit, has a rotational speed exceeding 5000 r / s, and the wind pressure generated by the high-pressure centrifugal blower exceeds 7000 Pa.

[0015] According to the above technical solution, the beneficial effects of the engine waste heat-driven azeotropic high-pressure ejector pesticide spraying device and method provided by the present invention in use are as follows: The device provided in this application uses an internal combustion engine for driving force and utilizes a working fluid heating mechanism to heat the waste heat of the exhaust gas in the exhaust pipe of the internal combustion engine, thereby heating the mixed working fluid to a high-pressure steam state. It is also equipped with a high-pressure ejector mechanism, and the internal fan body is connected to the drive shaft of the internal combustion engine, thereby generating a higher rotation speed to eject a higher speed airflow, spraying out the azeotropic mixed working fluid high-pressure steam, and then using a negative pressure environment at the outlet to carry the liquid medicine out. This device ensures a long range and can effectively spray the liquid medicine onto tall and dense crops such as durian trees and eucalyptus trees. It eliminates the need for an independent burner and directly uses an internal combustion engine to ensure operational stability. Moreover, directly using the waste heat of the internal combustion engine to heat the mixed working fluid can reduce energy consumption and cost, making it more energy-efficient and economical. Compared with the water mist machines currently available abroad, it can save water while ensuring the same range and guaranteeing continuous operation.

[0016] Other features and advantages of the present invention will be described in detail in the following detailed description section; and all parts not covered in the present invention are the same as or can be implemented using the prior art. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the following detailed description to explain the invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of an azeotropic high-pressure ejector pesticide spraying device driven by engine waste heat, provided in a preferred embodiment of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of an azeotropic high-pressure ejector pesticide spraying device driven by engine waste heat, provided in a preferred embodiment of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the working fluid heating mechanism provided in a preferred embodiment of the present invention; Figure 4 This is a schematic diagram of the assembly of the fan body and the internal combustion engine via a belt pulley transmission unit according to a preferred embodiment of the present invention; Figure 5 This is a flowchart of a preferred embodiment of the present invention, showing a method for high-pressure ejector spraying of pesticides using an azeotropic working fluid driven by engine waste heat.

[0018] Explanation of reference numerals in the attached figures 1. Mobile support frame; 2. Internal combustion engine; 3. Working fluid heating mechanism; 4. Belt pulley drive unit; 5. Voltage stabilizer pipe; 6. Fan unit; 7. Ejector barrel unit; 301. Waste heat collection sleeve; 302. Working fluid heating coil; 601. Fan body; 8. Connecting nozzle. Detailed Implementation

[0019] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0020] In this invention, unless otherwise stated, directional terms such as "upper," "lower," "inner," and "outer" in the terminology represent the orientation of the term in its normal use or are common terms understood by those skilled in the art, and should not be regarded as limitations on the term.

[0021] like Figure 1-4 As shown, the present invention provides a high-pressure ejector pesticide spraying device driven by engine waste heat using an azeotropic working fluid, the device comprising: Internal combustion engine 2, which has an exhaust pipe installed inside; The working fluid heating mechanism 3 is arranged in the waste heat area of ​​the internal combustion engine 2, and uses the waste heat of the exhaust gas in the exhaust pipe of the internal combustion engine 2 for heating. The high-pressure ejector mechanism has its outlet connected to the outlet of the working fluid heating mechanism 3 to eject the generated azeotropic mixed working fluid high-pressure steam, and the central shaft of the blower body in the high-pressure ejector mechanism is connected to the drive shaft of the internal combustion engine 2 to increase the rotational speed of the blower body.

[0022] In the above scheme, the independent burner is abandoned, and the internal combustion engine 2 is used directly. The high-pressure ejector mechanism and the internal combustion engine 2 are assembled together, and the working fluid heating mechanism 3 is also arranged in the waste heat area of ​​the internal combustion engine 2. In this way, the waste heat of the internal combustion engine 2 can be utilized. Specifically, the waste heat can be used to heat the mixed working fluid to generate high-pressure steam, which can achieve the effect of energy saving. In contrast, traditional fogging machines still use an independent burner to heat the mixed working fluid separately. On the other hand, the internal combustion engine 2 is used to drive the fan body in the high-pressure ejector mechanism to increase the speed of the fan body and generate a stronger airflow. With the high-pressure steam mixed working fluid, the liquid medicine can be sprayed out. This structure can ensure a longer spray range, which is different from traditional and existing fogging machines. It can effectively spray liquid medicine on tall and dense crops such as durian trees and eucalyptus trees. Because the device and technology provided in this application are designed for the characteristics of crops in tropical regions such as Southeast Asia, traditional fogging machines cannot guarantee ineffective liquid medicine spraying for tall crops such as durian trees. Therefore, the device of this application can ensure the stability of operation during use, and directly utilizes the waste heat of the internal combustion engine to heat the mixed working fluid, which can reduce energy consumption and cost, and is more energy-efficient and economical. Compared with the water mist machines that are currently available abroad, it can save water while ensuring the same range and ensuring the working endurance.

[0023] In a preferred embodiment of the present invention, the internal combustion engine 2 is further provided with a cylinder liner water circulation loop, and the working fluid heating mechanism 3 also utilizes the residual heat of the cylinder liner water in the cylinder liner water circulation loop for heating.

[0024] In the above scheme, in order to further improve the utilization of waste heat from the internal combustion engine 2, a cylinder liner water circulation loop is also provided inside the internal combustion engine 2. Of course, a heat exchanger also needs to be provided to exchange the heat of the water pipes in the cylinder liner water circulation loop, and then use the heat to heat the working fluid heating coil to achieve the heating treatment of the working fluid liquid. This structure, together with the exhaust gas waste heat collection structure, can improve the utilization rate of waste heat from the internal combustion engine 2, improve the energy saving effect, and also improve the efficiency and effect of the working fluid liquid being vaporized into high-pressure steam at high temperature.

[0025] In a preferred embodiment of the present invention, the working fluid heating mechanism 3 includes: Waste heat collection sleeve 301 is installed on the internal combustion engine 2 and is used to collect the waste heat of the exhaust gas from the exhaust gas discharge pipe of the internal combustion engine 2 and / or the cylinder liner water from the cylinder liner water circulation loop. The working fluid heating coil 302 is installed inside the waste heat collection sleeve. Its inlet is connected to the working fluid tank containing the working fluid liquid, and its outlet is connected to the outlet of the high-pressure ejector mechanism and the outlet of the liquid pipe.

[0026] In the above scheme, the mixed working fluid enters from one end of the working fluid heating coil 302 and exits from the other end. The entire working fluid heating coil 302 is set inside the waste heat collection sleeve 301. Since the waste heat collection sleeve 301 collects the waste heat of the exhaust gas from the exhaust pipe of the internal combustion engine 2 and / or the cylinder liner water from the cylinder liner water circulation loop, this waste heat can be used to heat the working fluid liquid inside the working fluid heating coil 302. Since the coil increases the transportation distance and contact area, it can better heat the internal working fluid liquid to form high-pressure steam. Of course, in order to further improve the heating effect, multiple working fluid heating coils 302 can be set and connected in series.

[0027] In a preferred embodiment of the present invention, a pressure stabilizing pipe 5 is further provided between the outlet of the working fluid heating coil 302 and the outlet of the high-pressure ejector mechanism for adjusting the pressure of the vaporized working fluid liquid.

[0028] In the above scheme, the pressure stabilizing pipe 5 can transport the generated high-pressure steam to the outlet of the high-pressure ejector mechanism, and can also stabilize the generated high-pressure steam.

[0029] In a preferred embodiment of the present invention, the high-pressure ejector mechanism includes: The fan unit 6, whose internal fan body 601 is driven by the drive shaft of the internal combustion engine 2 through the belt pulley transmission unit 4; The ejector barrel unit 7 has its inlet end connected to the air outlet of the blower unit 6, and the jet direction of its outlet end can be rotated and adjusted along the vertical plane and / or the horizontal plane.

[0030] In the above scheme, the belt pulley transmission unit 4 includes a first transmission wheel and a second transmission wheel. The first transmission wheel is fixedly sleeved on the central shaft of the blower body 601, and the second transmission wheel is fixedly sleeved on the drive shaft of the internal combustion engine 2. The first transmission wheel and the second transmission wheel are connected together by a belt. By adjusting the diameter ratio of the first transmission wheel and the second transmission wheel, this structure can further increase the rotational speed of the blower body 601 to ensure the size of the generated airflow and thus increase the final spray height of the liquid. The ejector tube unit 7 is used to spray the generated airflow, high-pressure steam of the working fluid, and liquid after they are combined. The ejector tube unit 7 can be rotated and adjusted along the vertical and / or horizontal planes, thus adjusting the left-right direction and elevation angle of the spray to suit different spraying requirements.

[0031] In a preferred embodiment of the present invention, the fan body 601 is a high-pressure centrifugal fan, wherein the high-pressure centrifugal fan, after being accelerated by a belt pulley transmission unit, has a rotational speed exceeding 5000 r / s, and the wind pressure generated by the high-pressure centrifugal fan exceeds 7000 Pa.

[0032] In the above scheme, the high-pressure centrifugal fan can ensure high speed to generate high-pressure airflow. The transmission action of the belt pulley transmission unit can further increase the speed of the high-pressure centrifugal fan. In actual operation, its speed after acceleration exceeds 5000 r / s, and the generated air pressure exceeds 7000 Pa, which can meet the pesticide spraying requirements of tall and dense crops such as durian trees and eucalyptus trees, and carry out effective liquid spraying.

[0033] In a preferred embodiment of the present invention, the device further includes: The device includes a mobile support frame 1 on which the internal combustion engine 2 and the high-pressure ejector mechanism are mounted. The device also includes a pesticide tank connected via a pipeline to the pesticide ejection port at the outlet end of the ejector barrel unit 7.

[0034] In the above scheme, the movable support frame 1 facilitates the overall movement of the device, and the propellant tank is directly connected to the outlet of the ejector barrel unit 7. Regarding the structure of the movable support frame 1, as follows... Figure 1 As shown, it includes a frame body, with at least two wheels on one side and a handle on the other side for easy pushing and other operations by the user.

[0035] The pesticide tank is set up and directly connected to the outlet of the ejector tube unit 7 through a conduit. It is also connected to the outlet of the pressure stabilizing pipe 5 through a connecting nozzle 8 so that the pesticide can be sprayed out after merging. This also avoids the pesticide being directly heated, because heating the existing pesticide can easily change its properties and affect the effect.

[0036] In summary, the azeotropic working fluid high-pressure ejector pesticide spraying device driven by engine waste heat provided by this invention uses an internal combustion engine to provide driving force and utilizes a working fluid heating mechanism to heat the waste heat of the exhaust gas in the exhaust pipe of the internal combustion engine 2, thereby heating the mixed working fluid to a high-pressure steam state. It also includes a high-pressure ejector mechanism, with the internal fan body connected to the drive shaft of the internal combustion engine 2, generating a higher rotational speed to eject a higher-speed airflow, spraying out the azeotropic mixed working fluid high-pressure steam. Then, at the outlet, a negative pressure environment carries the pesticide solution out for spraying. This device ensures a long range and can effectively spray pesticides onto tall, dense crops such as durian trees and eucalyptus trees. It eliminates the need for an independent burner, directly using an internal combustion engine to ensure operational stability. Furthermore, directly utilizing the waste heat of the internal combustion engine to heat the mixed working fluid reduces energy consumption and costs, resulting in better energy efficiency and economy. Compared to existing water mist sprayers abroad, it maintains the same range while saving water and ensuring continuous operation.

[0037] like Figure 5 As shown, the present invention also provides a method for high-pressure ejector spraying of pesticides using an azeotropic working fluid driven by engine waste heat, the method comprising: Step S101: The waste heat of the exhaust gas and / or cylinder liner water of the internal combustion engine is recovered using a working fluid heating mechanism. Step S102: The working fluid liquid introduced into the working fluid heating coil of the working fluid heating mechanism is heated to generate azeotropic mixed working fluid high-pressure steam. Step S103: High-pressure airflow is generated by the high-pressure ejector mechanism and forms a negative pressure with the azeotropic mixed working fluid high-pressure steam ejected from the outlet to draw in the pesticide in the pesticide ejector port, mix it, and atomize it for spraying.

[0038] In a preferred embodiment of the present invention, the blower body 601 in the high-pressure ejector mechanism is a high-pressure centrifugal blower, wherein the high-pressure centrifugal blower has a rotational speed exceeding 5000 r / s after being accelerated by a belt pulley transmission unit, and the wind pressure generated by the high-pressure centrifugal blower exceeds 7000 Pa.

[0039] In summary, the high-pressure ejector pesticide spraying method using an azeotropic working fluid driven by engine waste heat provided by this invention utilizes an internal combustion engine to provide driving force and a working fluid heating mechanism to heat the waste heat of the exhaust gas in the exhaust pipe of the internal combustion engine 2, thereby heating the mixed working fluid to a high-pressure steam state. A high-pressure ejector mechanism is also provided, with the internal fan body connected to the drive shaft of the internal combustion engine 2, generating a higher rotational speed to eject a higher-speed airflow, spraying out the high-pressure steam of the azeotropic mixed working fluid. Then, at the outlet, a negative pressure environment carries the pesticide solution out for spraying. This device ensures a high range and can effectively spray pesticides onto tall, dense crops such as durian trees and eucalyptus trees. It eliminates the need for an independent burner, directly using an internal combustion engine to ensure operational stability. Furthermore, directly utilizing the waste heat of the internal combustion engine to heat the mixed working fluid reduces energy consumption and costs, resulting in better energy efficiency and economy. Compared to existing water mist sprayers abroad, it maintains the same range while saving water and ensuring continuous operation.

[0040] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0041] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

[0042] Furthermore, various different embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed by the present invention.

Claims

1. A high-pressure ejector pesticide spraying device using an azeotropic working fluid driven by engine waste heat, characterized in that, The device includes: An internal combustion engine (2) has an exhaust pipe installed inside it; The working fluid heating mechanism (3) is located in the waste heat area of ​​the internal combustion engine (2) and uses the waste heat of the exhaust gas in the exhaust gas discharge pipe of the internal combustion engine (2) for heating. The high-pressure ejector mechanism has its outlet connected to the outlet of the working fluid heating mechanism (3) to eject the generated azeotropic mixed working fluid high-pressure steam, and the central shaft of the blower body in the high-pressure ejector mechanism is connected to the drive shaft of the internal combustion engine (2) to increase the rotational speed of the blower body.

2. The high-pressure ejector pesticide spraying device driven by engine waste heat according to claim 1, characterized in that, The internal combustion engine (2) is also equipped with a cylinder liner water circulation loop, and the working fluid heating mechanism (3) also uses the residual heat of the cylinder liner water in the cylinder liner water circulation loop for heating.

3. The high-pressure ejector pesticide spraying device driven by engine waste heat according to claim 1, characterized in that, The working fluid heating mechanism (3) includes: Waste heat collection sleeve (301) is installed on the internal combustion engine (2) for collecting waste heat from the exhaust gas of the exhaust gas discharge pipe of the internal combustion engine (2) and / or the cylinder liner water of the cylinder liner water circulation loop. The working fluid heating coil (302) is installed inside the waste heat collection sleeve. Its inlet is connected to the working fluid tank containing the working fluid liquid, and its outlet is connected to the outlet of the high-pressure ejector mechanism and the outlet of the liquid pipe.

4. The high-pressure ejector pesticide spraying device driven by engine waste heat according to claim 3, characterized in that, A pressure stabilizing pipe (5) is also connected between the outlet of the working fluid heating coil (302) and the outlet of the high-pressure ejector mechanism to regulate the pressure of the vaporized working fluid liquid.

5. The high-pressure ejector pesticide spraying device driven by engine waste heat according to claim 1, characterized in that, The high-voltage ejector mechanism includes: The fan unit (6) has a fan body (601) inside which is driven to the drive shaft of the internal combustion engine (2) via a belt pulley transmission unit (4); The ejector tube unit (7) has its inlet end connected to the air outlet of the blower unit (6), and the jet direction of its outlet end can be rotated and adjusted along the vertical plane and / or the horizontal plane.

6. The high-pressure ejector pesticide spraying device driven by engine waste heat according to claim 5, characterized in that, The fan body (601) is a high-pressure centrifugal fan, wherein the high-pressure centrifugal fan speed exceeds 5000 r / s after being increased by the belt pulley transmission unit, and the wind pressure generated by the high-pressure centrifugal fan exceeds 7000 Pa.

7. The high-pressure ejector pesticide spraying device driven by engine waste heat according to claim 1, characterized in that, The device also includes: The internal combustion engine (2) and the high-pressure ejector mechanism are both mounted on the mobile support frame (1).

8. The high-pressure ejector pesticide spraying device driven by engine waste heat according to claim 4, characterized in that, The device further includes: The pesticide box is connected to the pesticide ejection port at the outlet end of the ejector tube unit (7) via a pipeline.

9. A spraying method using an azeotropic high-pressure ejector pesticide spraying device driven by engine waste heat as described in any one of claims 1-8, characterized in that, The method includes: The waste heat of exhaust gas and / or cylinder liner water of an internal combustion engine is recovered using a working fluid heating mechanism. The working fluid liquid introduced into the working fluid heating coil is heated to generate azeotropic mixed working fluid high-pressure steam; The high-pressure ejector mechanism generates a high-pressure airflow, which forms a negative pressure with the azeotropic mixture high-pressure steam ejected from the outlet to draw in, mix, and atomize the pesticide in the pesticide ejector nozzle before spraying it out.

10. The method for high-pressure ejector spraying of pesticides using an azeotropic working fluid driven by engine waste heat according to claim 9, characterized in that, The blower body (601) in the high-pressure ejector mechanism is a high-pressure centrifugal blower, wherein the high-pressure centrifugal blower has a rotational speed exceeding 5000 r / s after being accelerated by the belt pulley transmission unit, and the wind pressure generated by the high-pressure centrifugal blower exceeds 7000 Pa.

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