Quantitative liquid pesticide and water mixing device

Abstract

The present application relates to the technical field of medicine mixing device, in particular to a kind of quantitative liquid pesticide and water mixing device, including mixing tank, the mixing tank top tank mouth is equipped with cover plate, the cover plate bottom is rotatably installed with stirring frame, the cover plate is equipped with the driving element for driving stirring frame rotation;The stirring frame is composed of hollow tube and stirring impeller, the hollow tube is rotatably connected at the center of cover plate, the hollow tube bottom is fixedly installed with stirring impeller, the cover plate top is installed with support, and the support is equipped with quantitative mechanism.The quantitative mechanism of the present application is composed of quantitative cylinder, piston head, electric push rod and check valve, liquid level sensor monitors the liquid level in mixing tank in real time, and is electrically controlled linkage with water inlet solenoid valve, automatically replenishes water as needed, can accurately control the extraction of pesticide and the injection amount of quantitative cylinder, avoids artificial estimation error, ensures the accuracy of pesticide concentration, improves the effect of pesticide application and reduces the risk of pesticide damage.

Description

Technical Field

[0001] This invention relates to the field of pesticide mixing equipment technology, and more specifically, to a quantitative liquid pesticide and water mixing device. Background Technology

[0002] In agricultural production, the scientific dilution and uniform mixing of liquid pesticides are crucial for ensuring effective pest and disease control and reducing pesticide damage and environmental pollution. Typically, pesticides need to be mixed with water in a specific ratio before being applied to crops via spraying or irrigation. To achieve effective mixing, farmers often use mixers and containers for manual preparation, employing methods such as mechanical blade agitation or air agitation. While this approach meets basic mixing requirements to some extent, it heavily relies on manual experience and lacks precise control, revealing numerous problems in practical application, particularly in controlling pesticide dosage and subsequent transfer and application.

[0003] Current pesticide-water mixing devices generally suffer from two major technical defects: First, the pesticide addition process often relies on manual pouring, making it impossible to precisely control the amount added. This can easily lead to excessive pesticide use, resulting in waste and environmental pollution, or insufficient addition, affecting the control effect. It is difficult to achieve standardized and quantitative pesticide mixing operations. Second, after mixing, if the pesticide solution needs to be transferred to an agricultural sprayer for spraying, it usually requires manual scooping with tools such as water ladles. This is not only cumbersome and inefficient, but also poses a safety hazard of pesticide poisoning to operators if the solution comes into contact with their skin. It is difficult to meet the needs of modern agriculture for efficient, safe, and precise plant protection operations. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides a quantitative liquid pesticide and water mixing device.

[0005] A quantitative liquid pesticide and water mixing device includes a mixing tank, which is the main container for preparing and mixing pesticides. A cover plate is fixedly installed at the top opening of the mixing tank. A stirring frame for stirring pesticides and water is rotatably installed at the bottom of the cover plate. The stirring frame is located inside the mixing tank. A driving component for rotating the stirring frame is provided on the cover plate. The stirring frame consists of a hollow tube and a stirring impeller. The hollow tube is rotatably connected via a bearing at the center of the cover plate. The stirring impeller is fixedly installed at the bottom of the hollow tube, and the bottom opening of the hollow tube passes through the stirring impeller. A bracket is fixedly installed on one side of the top of the cover plate. A metering mechanism for dispensing pesticides is provided on the bracket. The metering mechanism includes a metering cylinder fixedly installed inside the bracket. A sliding rod is slidably connected inside the metering cylinder. A piston head is fixedly connected to the top of the sliding rod. The outer diameter of the piston head and the inner diameter of the metering cylinder are in a sealed sliding fit. An electric push rod is fixedly connected to one side of the bracket. A connecting rod is fixedly connected to the piston rod of the electric push rod. The metering cylinder is connected to a connecting block, which is fixedly connected to a sliding rod. A connecting pipe is connected to the top of the metering cylinder, and the other end of the connecting pipe is connected to a hollow tube. The connecting pipe and the hollow tube are connected in a sealed, rotating manner via a rotary joint. An inlet is provided on one side of the top of the metering cylinder. A first one-way valve is installed at the inlet of the metering cylinder, with its inlet for receiving pesticides. The first one-way valve is directed from the outside to the inside of the metering cylinder. A second one-way valve is installed where the connecting pipe connects to the metering cylinder, with its direction of flow from the metering cylinder to the connecting pipe. A water inlet pipe is connected to the body of the connecting pipe, with a solenoid valve installed at the inlet end. A third one-way valve is installed on the water inlet pipe, with its direction of flow from the solenoid valve to the connecting pipe. A liquid level sensor, such as a resistive or float sensor, is mounted on the cover plate. The liquid level sensor is used to detect the volume of the mixture in the mixing tank. The liquid level sensor and the solenoid valve control system are electrically connected.

[0006] More preferably, the driving component includes a support, a servo motor, a first gear, and a second gear. The support is fixedly connected to the top of the cover plate, the servo motor is fixedly mounted on the support, the first gear is fixedly connected to the output shaft of the servo motor, and the second gear is fixedly connected to the top of the hollow tube. The first gear and the second gear mesh with each other.

[0007] More preferably, the mixing tank is provided with a viewing window on its side wall for observing the mixing of pesticide and water in the mixing tank, and the metering cylinder is provided with a vertically arranged scale window on its side wall, the scale window being marked with graduations for indicating the current liquid volume in the metering cylinder.

[0008] More preferably, the inlet end of the first one-way valve is connected to a flexible tube, which is used to draw pesticides for quantitative extraction, and the inlet end of the flexible tube is equipped with a filter ball for filtering impurities in the liquid.

[0009] More preferably, a placement clip is fixedly connected to the outside of the bracket, and the end of the placement clip is provided with a clamp for holding the hose. The placement clip is used to stably hold the idle hose.

[0010] More preferably, a movable frame is fixedly installed at the bottom of the mixing tank, and casters are rotatably installed at the four corners of the bottom of the movable frame. The casters are equipped with brakes, and telescopic legs are fixedly installed at the bottom of the movable frame near each caster. The telescopic legs can be extended and retracted to adjust the height.

[0011] More preferably, a liquid pump is fixedly installed at the bottom of the mixing tank. The inlet of the liquid pump is connected to the outlet at the bottom of the mixing tank. The outlet of the liquid pump is connected to a liquid outlet pipe, which is used to connect to an application pipeline for preparing pesticides. An upward extension pipe is connected to the liquid outlet pipe, which can be used to inject the prepared pesticides into the tank of a backpack sprayer. A water valve switch is installed at the liquid outlet end of both the liquid outlet pipe and the extension pipe, which is used to control the on / off state of the corresponding liquid outlet pipe and the extension pipe respectively.

[0012] More preferably, a metering control valve is installed at the outlet of the liquid outlet pipe. The metering control valve is used to measure the outflowing liquid. When the cumulative flow of pesticide in the liquid outlet pipe reaches the set value, the metering control valve automatically closes and stops the liquid flow, thereby achieving quantitative output.

[0013] The beneficial effects of this invention are:

[0014] 1. This invention uses a metering mechanism consisting of a metering cylinder, piston head, electric push rod, and one-way valve. The liquid level sensor monitors the liquid level in the mixing tank in real time and is electrically linked with the water inlet solenoid valve to automatically replenish water as needed. This can accurately control the extraction of pesticides and the amount injected into the metering cylinder, avoid errors from manual estimation, ensure accurate pesticide concentration, improve the application effect, and reduce the risk of pesticide damage.

[0015] 2. The servo motor of the present invention drives the hollow stirring frame to rotate through gear transmission, which drives the stirring impeller to fully stir the liquid in the tank. The pesticide is directly injected into the mixing area through the hollow tube, and water is supplied synchronously through the water inlet pipe to achieve simultaneous addition and mixing, which significantly improves the uniformity of dissolution and dispersion and shortens the preparation time.

[0016] 3. The bottom of the mixing tank of the present invention is integrated with a mobile frame with braked universal wheels and adjustable telescopic support legs, which facilitates transportation and stable operation. At the same time, the liquid dispensing system is compatible with equipment such as backpack sprayers. The extension pipe and dual-way water valve design support multiple dosing methods to meet diverse application scenarios such as fields, orchards and greenhouses. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a schematic diagram of the mixing tank, cover plate, stirring rack, driving component and metering mechanism of the present invention.

[0019] Figure 3 This is a three-dimensional structural diagram of the hollow tube and stirring impeller in this invention.

[0020] Figure 4 This is a diagram showing the fit between the cover plate, hollow tube, first gear, and second gear of the present invention.

[0021] Figure 5 This is a schematic diagram of the components of the present invention, including the cover plate, connecting pipe, hollow pipe, and liquid level sensor.

[0022] Figure 6 This is a diagram showing the connection relationship of the specific components of the support, connecting tube, and metering mechanism of the present invention.

[0023] Figure 7 This is a schematic diagram of the metering cylinder, slide bar, piston head, electric push rod, and connecting block of the present invention.

[0024] Figure 8 This is a diagram showing the connection relationship between the metering cylinder, hose, filter ball, and placement clamp of the present invention.

[0025] Figure 9 This is a schematic diagram of the mixing tank, liquid pump, water valve switch, and metering control valve of the present invention.

[0026] The following are the labels in the diagram: 1. Mixing tank; 101. Viewing window; 2. Cover plate; 3. Stirring rack; 31. Hollow tube; 32. Stirring impeller; 4. Drive component; 41. Support; 42. Servo motor; 43. First gear; 44. Second gear; 5. Bracket; 6. Metering mechanism; 61. Metering cylinder; 611. Slide rod; 612. Piston head; 62. Electric push rod; 63. Connecting block; 64. First check valve; 65. Second check valve; 66. Water inlet pipe; 67. Third check valve; 68. Solenoid valve; 7. Connecting pipe; 8. Liquid level sensor; 9. Scale window; 10. Hoses; 11. Filter ball; 12. Placement clamp; 13. Moving frame; 131. Casters; 132. Telescopic support; 14. Liquid pump; 15. Liquid outlet pipe; 16. Extension pipe; 17. Water valve switch; 18. Metering control valve. Detailed Implementation

[0027] Preferred embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0028] Please refer to Figures 1-7 As shown, a quantitative liquid pesticide and water mixing device includes a mixing tank 1, which is the main container for preparing and mixing pesticides. A cover plate 2 is fixedly installed at the top opening of the mixing tank 1. A stirring frame 3 for stirring pesticides and water is rotatably installed at the bottom of the cover plate 2. The stirring frame 3 is located inside the mixing tank 1. A driving component 4 for driving the stirring frame 3 to rotate is provided on the cover plate 2. The stirring frame 3 consists of a hollow tube 31 and a stirring impeller 32. The hollow tube 31 is rotatably connected through a bearing at the center of the cover plate 2. The stirring impeller is fixedly installed at the bottom of the hollow tube 31. 32. The bottom opening of the hollow tube 31 passes through the stirring impeller 32. A bracket 5 is fixedly installed on one side of the top of the cover plate 2. A metering mechanism 6 for pesticide metering is set on the bracket 5. The metering mechanism 6 includes a metering cylinder 61 fixedly installed in the bracket 5. A slide rod 611 is slidably connected inside the metering cylinder 61. A piston head 612 is fixedly connected to the top of the slide rod 611. The outer diameter of the piston head 612 and the inner diameter of the metering cylinder 61 are in a sealed sliding fit. An electric push rod 62 is fixedly connected to one side of the bracket 5. A connecting rod is fixedly connected to the piston rod of the electric push rod 62. Block 63 is fixedly connected to slide rod 611. A connecting pipe 7 is connected to the top of metering cylinder 61, and the other end of the connecting pipe 7 is connected to hollow tube 31. The connecting pipe 7 and hollow tube 31 are connected in a sealed rotational connection via a rotary joint. An inlet is provided on one side of the top of metering cylinder 61, and a first one-way valve 64 is installed at the inlet. The inlet of the first one-way valve 64 is used to connect pesticides, and the flow direction of the first one-way valve 64 is from the outside to the inside of metering cylinder 61. A second one-way valve 6 is installed where the connecting pipe 7 connects to metering cylinder 61. 5. The second one-way valve 65 is directed from the metering cylinder 61 to the connecting pipe 7. The connecting pipe 7 is connected to an inlet pipe 66 for water intake. A solenoid valve 68 is installed at the inlet end of the inlet pipe 66. A third one-way valve 67 is installed on the inlet pipe 66. The direction of the third one-way valve 67 is directed from the solenoid valve 68 to the connecting pipe 7. A liquid level sensor 8, such as a resistive or float sensor, is installed on the cover plate 2. The liquid level sensor 8 is used to detect the volume of the mixed liquid in the mixing tank 1. The control system of the liquid level sensor 8 and the solenoid valve 68 is electrically connected.

[0029] Please refer to Figure 6 and Figure 9As shown, a viewing window 101 is provided on the side wall of the mixing tank 1. The viewing window 101 is used to observe the mixing of pesticide and water in the mixing tank 1. A scale window 9 is vertically provided on the side wall of the metering cylinder 61. The scale window 9 is marked with a scale to indicate the current liquid volume in the metering cylinder 61.

[0030] Please refer to Figure 6 and Figure 8 As shown, the inlet end of the first one-way valve 64 is connected to a hose 10, which is used to extract pesticides for quantitative extraction. The inlet end of the hose 10 is equipped with a filter ball 11 for filtering impurities in the liquid.

[0031] Please refer to Figure 8 As shown, a placement clip 12 is fixedly connected to the outside of the bracket 5. The end of the placement clip 12 is provided with a clamping port for holding the hose 10. The placement clip 12 is used to stably clamp the idle hose 10.

[0032] When using this mixing device to mix pesticides and water, first remove the hose 10 from the placement clamp 12, then place the inlet end of the hose 10 into the pesticide concentrate container. Next, activate the electric push rod 62. The piston rod of the electric push rod 62 extends and drives the slide rod 611 downwards within the metering cylinder 61 via the connecting block 63. The piston head 612 at the top of the slide rod 611 slides downwards synchronously within the metering cylinder 61. Because the second one-way valve 65 cannot flow into the metering cylinder 61, a negative pressure is generated within the inner cavity of the metering cylinder 61. Therefore, the pesticide concentrate is drawn into the hose 10 under this negative pressure. The pesticide concentrate in the hose 10 flows through the first one-way valve 64 and then into the metering cylinder 61. At this time, the filter ball 11 installed on the hose 10 can filter out impurities present in the pesticide concentrate. The operator can observe and confirm the extracted pesticide volume in real time through the vertically set scale window 9 on the side wall of the metering cylinder 61, achieving visual quantification of the pesticide. After the pesticide concentrate extraction is complete, the hose 10 can be returned to the placement clamp. The device is fixed in the clamp of 12 to keep the working area clean. Then, it enters the mixing preparation stage. The electric push rod 62 pushes the connecting block 63 and the slide rod 611 upward to reset, so that the piston head 612 squeezes the measured pesticide in the metering cylinder 61. At this time, the first one-way valve 64 closes and prevents the pesticide from flowing back, while the second one-way valve 65 opens under pressure, and the pesticide is accurately pushed into the connecting pipe 7. At this time, the third one-way valve 67 will prevent the pesticide in the connecting pipe 7 from flowing into the water inlet pipe 66. The pesticide in the connecting pipe 7 will flow into the mixing tank 1 through the hollow pipe 31. After all the measured pesticide in the metering cylinder 61 is discharged, the solenoid valve 68 is opened. The clean water flows through the water inlet pipe 66 under the action of external pressure and is injected into the connecting pipe 7 through the third one-way valve 67. After the clean water flows through the connecting pipe 7, it is injected into the mixing tank 1. In this process, the clean water can carry some of the pesticide remaining on the inner wall of the water inlet pipe 66 and the connecting pipe 7 into the mixing tank 1, so that the clean water and the measured pesticide are initially mixed.

[0033] Please refer to Figure 2 and Figure 4 As shown, the drive component 4 includes a support 41, a servo motor 42, a first gear 43 and a second gear 44. The support 41 is fixedly connected to the top of the cover plate 2. The servo motor 42 is fixedly mounted on the support 41. The first gear 43 is fixedly connected to the output shaft of the servo motor 42. The second gear 44 is fixedly connected to the top of the hollow tube 31. The first gear 43 and the second gear 44 mesh with each other.

[0034] During the mixing process of pesticides and water, the drive unit 4 will work continuously. The servo motor 42 drives the first gear 43 on its output shaft to rotate. The first gear 43 meshes with the second gear 44 on the hollow tube 31, thereby driving the entire stirring frame 3 to rotate at a constant speed around the axis in the mixing tank 1. The high-speed rotating stirring impeller 32 generates strong shearing, convection and diffusion effects on the premixed liquid and water injected into the mixing tank 1, forcing pesticide molecules and water molecules to fully and evenly mix. During the mixing process, the liquid level sensor 8 will monitor the volume of the mixed liquid in the mixing tank 1 in real time. When the total amount of the mixed liquid reaches the preset total ratio, the liquid level sensor 8 will feed the signal back to the control system. The control system will automatically control the solenoid valve 68 on the water inlet pipe 66 to close, stop adding water, and ensure that the mixed liquid in the mixing tank 1 can be accurately quantified. Subsequently, the operator can observe the flow and mixing of the liquid inside through the viewing window 101 on the side wall of the mixing tank 1 to ensure that the mixing effect of pesticides and water meets the requirements.

[0035] Please refer to Figure 1 and Figure 9 As shown, a movable frame 13 is fixedly installed at the bottom of the mixing tank 1. Universal wheels 131 are rotatably installed at the four corners of the bottom of the movable frame 13. The universal wheels 131 are equipped with brakes. Telescopic support legs 132 are fixedly installed at the bottom of the movable frame 13 near each universal wheel 131. The telescopic support legs 132 can be extended and retracted to adjust the height.

[0036] Please refer to Figure 1 and Figure 9 As shown, a liquid pump 14 is fixedly installed at the bottom of the mixing tank 1. The inlet of the liquid pump 14 is connected to the outlet at the bottom of the mixing tank 1. The outlet of the liquid pump 14 is connected to a liquid outlet pipe 15. The liquid outlet pipe 15 is used to connect to an external application pipeline for preparing pesticides. An upward extension pipe 16 is connected to the liquid outlet pipe 15. The extension pipe 16 can be used to inject the prepared pesticides into the tank of a backpack sprayer. A water valve switch 17 is installed at the liquid outlet end of both the liquid outlet pipe 15 and the extension pipe 16. The water valve switch 17 is used to control the on / off state of the corresponding liquid outlet pipe 15 and extension pipe 16 respectively.

[0037] Please refer to Figure 9As shown, a metering control valve 18 is installed at the outlet of the liquid outlet pipe 15. The metering control valve 18 is used to measure the outflowing liquid. When the cumulative flow of pesticide in the liquid outlet pipe 15 reaches the set value, the metering control valve 18 automatically closes and stops the liquid flow, thereby achieving a metered output.

[0038] After the pesticide and water are thoroughly stirred in the mixing tank 1 to form a uniform application solution, the output stage begins. The liquid pump 14 at the bottom of the mixing tank 1 is activated, drawing the mixed pesticide solution into the outlet pipe 15. Depending on the application scenario, the operator can choose the output path: if connecting to a field application pipeline is required, the operator can set the required total output volume of pesticide solution on the metering control valve 18 before application, based on the area to be covered. Then, the water valve switch 17 on the outlet pipe 15 is opened. When the pesticide solution flows through the metering control valve 18, the built-in flow meter begins to measure. Once the accumulated flow reaches the set value, the metering control valve 18 automatically and quickly closes, cutting off the flow. Simultaneously, a signal can be fed back to the liquid pump 14 to stop its operation, or the valve itself can be locked to stop the discharge. The device can accurately complete a single quantitative output operation. If it is necessary to fill the tank of the backpack sprayer, the extension tube 16 is used and the water valve switch 17 on it is opened. At the same time, the water valve switch 17 on the outlet pipe is closed. The liquid pump 14 will flow the liquid from the extension tube 16 so that the tank can be filled. Finally, the mobility and stability of the device are ensured by the bottom mobile frame 13. The universal wheels 131 with brakes are installed at the four corners of the bottom of the mobile frame 13, which makes the entire device easy to move to different work locations. After arriving at the position, the brakes can be stepped on to lock the wheels. At the same time, the height of the telescopic support legs 132 installed at the bottom of the mobile frame 13 near each universal wheel 131 can be adjusted to make the device stably supported on the ground and prevent it from moving due to vibration during mixing or pumping operations, ensuring safe and stable transfer operations.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A quantitative liquid pesticide and water mixing device, comprising a mixing tank (1), a cover plate (2) installed on the top of the mixing tank (1), a stirring rack (3) rotatably mounted on the cover plate (2), and a driving component (4) for driving the stirring rack (3) provided on the cover plate (2). Its features are, The cover plate (2) is provided with a bracket (5), and the bracket (5) is provided with a metering mechanism (6). The metering mechanism (6) includes a metering cylinder (61) installed in a bracket (5). A slide rod (611) is slidably connected inside the metering cylinder (61). A piston head (612) is fixedly connected to the top of the slide rod (611). The piston head (612) is in a sealed sliding fit with the metering cylinder (61). An electric push rod (62) is fixedly connected to the bracket (5). A connecting block (63) is fixedly connected to the piston rod of the electric push rod (62). The connecting block (63) is fixedly connected to the slide rod (611). The metering cylinder (61) and the hollow tube (31) are connected through a connecting pipe (7). A first one-way valve (64) is provided on the top side wall of the metering cylinder (61). A second one-way valve (65) is provided at the point where the connecting pipe (7) connects to the metering cylinder (61). A water inlet pipe (66) is connected to the connecting pipe (7). A third one-way valve (67) and a solenoid valve (68) are installed on the water inlet pipe (66). A liquid level sensor (8) is mounted on the cover plate (2), and the liquid level sensor (8) is electrically connected to the control system of the solenoid valve (68).

2. The quantitative liquid pesticide and water mixing device as described in claim 1, characterized in that, The stirring rack (3) is composed of a hollow tube (31) and a stirring impeller (32). The hollow tube (31) is rotatably connected to the cover plate (2), and the stirring impeller (32) is fixedly connected to the bottom of the hollow tube (31).

3. The quantitative liquid pesticide and water mixing device as described in claim 1, characterized in that, The drive unit (4) includes a support (41), a servo motor (42), a first gear (43) and a second gear (44). The support (41) is fixedly connected to the top of the cover plate (2). The servo motor (42) is fixedly installed on the support (41). The first gear (43) is fixedly connected to the output shaft of the servo motor (42). The second gear (44) is fixedly connected to the top of the hollow tube (31). The first gear (43) and the second gear (44) mesh with each other.

4. The quantitative liquid pesticide and water mixing device as described in claim 1, characterized in that, The mixing tank (1) has a viewing window (101) on its side wall, and the metering cylinder (61) has a scale window (9) on its side wall.

5. The quantitative liquid pesticide and water mixing device as described in claim 1, characterized in that, The inlet end of the first one-way valve (64) is connected to a hose (10), and the inlet end of the hose (10) is equipped with a filter ball (11).

6. The quantitative liquid pesticide and water mixing device as described in claim 5, characterized in that, The bracket (5) is fixed to the outside of a placement clip (12), and the end of the placement clip (12) is provided with a clamp for holding the flexible tube (10).

7. The quantitative liquid pesticide and water mixing device as described in claim 1, characterized in that, The bottom of the mixing tank (1) is fixedly installed with a movable frame (13). The four corners of the bottom of the movable frame (13) are rotatably installed with casters (131). The casters (131) are equipped with brakes. The bottom of the movable frame (13) is equipped with telescopic support feet (132) near each caster (131).

8. The quantitative liquid pesticide and water mixing device as described in claim 1, characterized in that, A liquid pump (14) is fixedly installed at the bottom of the mixing tank (1). The inlet of the liquid pump (14) is connected to the outlet at the bottom of the mixing tank (1). The outlet of the liquid pump (14) is connected to a liquid outlet pipe (15). An extension pipe (16) extending upward is connected to the liquid outlet pipe (15). A water valve switch (17) is installed at the liquid outlet end of both the liquid outlet pipe (15) and the extension pipe (16).

9. A quantitative liquid pesticide and water mixing device as described in claim 8, characterized in that, A metering control valve (18) is installed at the outlet of the liquid outlet pipe (15), and the metering control valve (18) is used to measure the outflowing liquid.

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