Liquid pesticide mixing device

Abstract

The invention discloses a liquid pesticide mixing device, relates to the field of agricultural equipment, and is used for solving the problems of non-uniform mixing and low efficiency of a traditional device. The device comprises a mixing bin, the top of the mixing bin is provided with a liquid inlet, a mounting rack and a driving mechanism, and the bottom of the mixing bin is provided with a discharge port; an inner pipe below the mounting frame coaxially penetrates through the rotating pipe, multiple groups of liquid cavities are formed in the outer wall of the rotating pipe, multiple groups of liquid outlet holes are correspondingly formed in the inner pipe, the liquid cavities are connected with radial hollow stirring rods, and nozzles are arranged on the side walls of the rods; a lifting mechanism on the mounting frame is connected with a lifting barrel in the inner pipe, a through hole in the side wall of the barrel corresponds to the liquid outlet, and a top liquid conveying pipe is connected with an external liquid bin. According to the device, mixing can be conducted in two modes of batch layering supplementing and synchronous dynamic layering, the injection height and dosage of additive liquid can be accurately controlled, the mixing uniformity is improved, the device is suitable for different pesticide mixing scenes, operation is controllable, and the structure is reliable in sealing.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of agricultural equipment, in particular to a liquid pesticide mixing device. BACKGROUND

[0002] In agricultural production, the mixing of liquid pesticides is a key link, which directly affects the use effect of the pesticides. The traditional liquid pesticide mixing device usually adopts a single inlet to inject the liquid to be mixed, and the mixing is carried out through a stirring paddle. However, this mixing method has obvious defects: when the densities of the added liquid and the base liquid are different, the added liquid is easy to gather at the top or bottom of the mixing bin, resulting in uneven mixing; at the same time, the traditional stirring method is difficult to realize precise mixing at different heights, and local concentration is easy to be too high or too low, which affects the use effect of the pesticides and may even cause harm to crops.

[0003] To solve the above problems, the application provides a liquid pesticide mixing device, which realizes precise layered mixing of liquid pesticides through innovative structural design, and effectively improves the mixing uniformity. SUMMARY

[0004] To solve the technical problems in the background art, the application provides a liquid pesticide mixing device.

[0005] The liquid pesticide mixing device provided by the application comprises a mixing bin, the top of the mixing bin is provided with a liquid inlet, and the bottom of the mixing bin is provided with a discharge outlet;

[0006] A rotating pipe is rotatably connected to the center of the bottom inner cavity of the mixing bin in the vertical direction;

[0007] The top of the mixing bin is provided with a mounting frame and a driving mechanism, and the driving mechanism is used for driving the rotating pipe to rotate around its own axis;

[0008] An inner pipe is fixedly installed at the bottom of the mounting frame, and the inner pipe is coaxially arranged in the inner part of the rotating pipe;

[0009] A plurality of groups of liquid cavities are arranged on the outer wall of the rotating pipe in the vertical direction, a plurality of groups of liquid outlet holes are formed in the side wall of the inner pipe in the vertical direction, and the inner cavity of the inner pipe is in one-to-one communication with each liquid cavity through the liquid outlet holes;

[0010] A plurality of groups of stirring rods are fixedly installed on the side wall of each group of liquid cavities, and the plurality of groups of stirring rods are distributed radially with the center of the liquid cavity as the reference;

[0011] Each stirring rod is a hollow structure, and the inner cavity of the stirring rod is in communication with the corresponding liquid cavity;

[0012] A plurality of groups of spray heads are formed in the side wall of each stirring rod;

[0013] A lifting mechanism is fixedly installed on the mounting frame, and a lifting bucket is slidably connected inside the inner tube;

[0014] The side wall of the lifting tank is provided with multiple sets of through holes, and each of the through holes is provided in a one-to-one correspondence with each of the liquid outlet holes;

[0015] The top of the lifting tank is sealed with an infusion tube, and the lifting mechanism is used to drive the lifting tank to move up and down along the inner tube axis to achieve selective docking between the lifting tank and each of the liquid chambers.

[0016] Preferably, the driving mechanism includes a first motor, which is fixedly mounted on the top of the mounting frame, and a driving gear is fixedly mounted on the output shaft end of the first motor; a driven gear is fixedly sleeved on the outer side wall of the top of the rotating tube, and the driving gear meshes with the driven gear for transmission. The driving mechanism drives the rotating tube to rotate by a gear transmission method, which is stable and reliable and can provide stable stirring power.

[0017] Preferably, the end of the infusion tube away from the lifting tank is sealed with a water pump, and the water inlet of the water pump is connected to the external liquid tank.

[0018] Preferably, the lifting mechanism includes a second motor, which is fixedly mounted on the top of the mounting frame, and a reciprocating lead screw is fixedly connected to the output shaft end of the second motor; a positioning component is fixedly provided on the outer wall of the lifting tank, and a guide groove is opened on the inner wall of the inner tube in the vertical direction, with the positioning component slidingly engaging with the guide groove; an internally threaded tube is fixedly provided at the center inside the lifting tank, and the internally threaded tube is threadedly connected to the reciprocating lead screw. The lifting mechanism adopts a structure in which the reciprocating lead screw and the internally threaded tube cooperate, which realizes the precise positioning of the lifting tank and ensures that the added liquid can be accurately injected into the target height layer.

[0019] Preferably, the outer wall of the lifting bucket is in close contact with the inner wall of the inner tube, and the inner wall of the rotating tube is in close contact with the outer wall of the inner tube.

[0020] Preferably, a stirring blade is fixedly installed at the end of the stirring rod away from the liquid chamber. The stirring blade is perpendicular to the stirring rod, and multiple sets of guide holes are opened on the surface of the stirring blade. The stirring blade and the guide holes on the blade at the end of the stirring rod enhance the stirring effect and promote turbulent mixing of the liquid.

[0021] Preferably, the nozzles of the stirring rod are spaced apart along the length of the stirring rod, and the spraying direction of the nozzles forms an angle of 30°-60° with the rotational tangent direction of the stirring rod.

[0022] Preferably, a one-way valve is fixedly installed at the liquid outlet of the inner tube. The one-way valve is directed from the inner tube to the liquid chamber. The one-way valve prevents the liquid in the mixing chamber from flowing back into the inner tube through the liquid outlet, thus avoiding cross-contamination between different batches of liquid.

[0023] Preferably, the inner wall of the mixing chamber is provided with multiple sets of liquid level sensors at intervals along the vertical direction. The liquid level sensors are electrically connected to the control terminal of the lifting mechanism to provide real-time feedback on the liquid level height and control the synchronous lifting of the lifting tank.

[0024] The present invention proposes a liquid pesticide mixing device. By setting up a liftable lifting tank and a multi-layer liquid chamber structure, the invention achieves precise injection of the additive liquid at different heights in the mixing chamber, avoiding the accumulation of the additive liquid in a certain area due to density differences, and effectively improving the mixing uniformity.

[0025] The stirring rod is connected to the liquid chamber, and the added liquid can be sprayed directly into the liquid in the mixing chamber through the nozzle on the stirring rod. At the same time, the stirring rod rotates with the rotating tube, so that the added liquid can be quickly dispersed, further improving the mixing effect.

[0026] The spray direction of the nozzle is at an angle of 30°-60° to the tangential direction of the stirring rod's rotation, so that the added liquid can be better mixed with the surrounding liquid after being sprayed out, avoiding excessively high local concentrations caused by direct spraying.

[0027] The linkage between the liquid level sensor and the lifting mechanism enables the synchronous lifting of the lifting tank and the liquid level, which is suitable for mixing methods where two liquids are added at the same time, ensuring uniform mixing of the liquids from the initial stage.

[0028] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0029] Fig. 1 This is a schematic diagram of the structure of the present invention;

[0030] Fig. 2 This is a schematic diagram of the stirring structure in this invention;

[0031] Fig. 3 This is a schematic diagram of the lifting bucket in this invention;

[0032] Explanation of the labels in the diagram:

[0033] 1. Mixing chamber; 101. Inlet; 102. Outlet;

[0034] 2. Rotary tube; 201. Driven gear; 202. First motor; 203. Drive gear; 204. Liquid chamber;

[0035] 3. Stirring rod; 301. Nozzle;

[0036] 4. Inner tube; 401. Liquid outlet;

[0037] 5. Reciprocating lead screw; 501. Second motor;

[0038] 6. Lifting tank; 601. Through hole; 602. Positioning component; 603. Internally threaded pipe; 604. Infusion pipe. Detailed Implementation

[0039] Embodiments of the present invention are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0040] like Figs. 1-3 The liquid pesticide mixing device shown includes a mixing chamber 1, wherein the mixing chamber 1 has an inlet 101 at the top and an outlet 102 at the bottom, characterized in that:

[0041] The bottom center of the inner cavity of the mixing chamber 1 is vertically connected to a rotating tube 2, which can rotate stably around its own axis.

[0042] The top of the mixing chamber 1 is fixedly equipped with a mounting frame and a drive mechanism. The output end of the drive mechanism is connected to the rotating tube 2 and is used to drive the rotating tube 2 to rotate around its own axis.

[0043] The mounting bracket has an inner tube 4 fixedly installed at the bottom. The inner tube 4 is coaxial with the rotating tube 2 and extends into the interior of the rotating tube 2. The inner tube 4 and the mounting bracket are relatively fixed.

[0044] The outer wall of the rotating tube 2 is provided with multiple sets of liquid cavities 204 at intervals along the vertical direction, and each set of liquid cavities 204 is evenly distributed along the circumference of the rotating tube 2; the side wall of the inner tube 4 is provided with multiple sets of liquid outlet holes 401 along the vertical direction, and the number and position of the liquid outlet holes 401 correspond one-to-one with the liquid cavities 204, and the inner cavity of the inner tube 4 is connected to each liquid cavity 204 through the liquid outlet holes 401;

[0045] Each set of liquid chambers 204 has multiple sets of stirring rods 3 fixedly installed on its sidewalls. The multiple sets of stirring rods 3 are radially distributed with the center of the liquid chamber 204 as the reference, ensuring that the stirring range covers the entire area of ​​the corresponding height layer of the mixing chamber 1.

[0046] Each of the stirring rods 3 is a hollow structure, and the inner cavity of the stirring rod 3 is connected to the inner cavity of the corresponding liquid cavity 204 to form a liquid flow channel; each of the stirring rods 3 has multiple sets of nozzles 301 on its side wall, and the nozzles 301 are used to spray the liquid in the liquid cavity 204 into the mixing chamber 1;

[0047] A lifting mechanism is fixedly installed on the mounting frame, and a lifting bucket 6 is slidably connected inside the inner tube 4. The lifting bucket 6 can move up and down along the axis of the inner tube 4.

[0048] The side wall of the lifting tank 6 has multiple sets of through holes 601, and the number and position of the through holes 601 correspond one-to-one with the liquid outlet holes 401 of the inner tube 4; the top of the lifting tank 6 is sealed with a liquid delivery pipe 604, which is used to deliver the additive liquid to be mixed to the lifting tank 6.

[0049] The output end of the lifting mechanism is connected to the lifting tank 6 and is used to drive the lifting tank 6 to move up and down along the axis of the inner tube 4. By adjusting the position of the lifting tank 6, the through hole 601 of the lifting tank 6 is aligned with the liquid outlet holes 401 at different heights of the inner tube 4, thereby achieving selective docking between the lifting tank 6 and each liquid chamber 204.

[0050] Furthermore, the driving mechanism includes a first motor 202, which is fixedly mounted on the top of the mounting bracket. A drive gear 203 is fixedly mounted on the output shaft end of the first motor 202. A driven gear 201 is fixedly sleeved on the outer side wall of the top of the rotating tube 2. The drive gear 203 meshes with the driven gear 201 for transmission. The stability of the gear transmission ensures that the rotating tube 2 rotates at a uniform speed.

[0051] Furthermore, a water pump is sealed and connected to the end of the infusion pipe 604 away from the lifting tank 6. The water inlet of the water pump is connected to the external liquid tank. The water pump provides power for the delivery of the added liquid, ensuring that the added liquid flows steadily into the lifting tank 6.

[0052] Furthermore, the lifting mechanism includes a second motor 501, which is fixedly installed on the top of the mounting frame. A reciprocating lead screw 5 is fixedly connected to the output shaft end of the second motor 501. A positioning component 602 is fixedly provided on the outer wall of the lifting bucket 6. A guide groove is opened on the inner wall of the inner tube 4 in the vertical direction. The positioning component 602 is slidably engaged with the guide groove to prevent the lifting bucket 6 from rotating with the reciprocating lead screw 5. An internally threaded tube 603 is fixedly provided at the center inside the lifting bucket 6. The internally threaded tube 603 is threadedly connected to the reciprocating lead screw 5. The rotational motion of the second motor 501 is converted into the linear lifting motion of the lifting bucket 6 through the threaded transmission, thereby achieving precise positioning of the lifting bucket 6.

[0053] Furthermore, the outer wall of the lifting tank 6 is tightly fitted with the inner wall of the inner tube 4, and the inner wall of the rotating tube 2 is tightly fitted with the outer wall of the inner tube 4. The tight-fitting structure ensures sealing performance and prevents leakage of liquid in the mixing chamber 1 or added liquid in the lifting tank 6.

[0054] Furthermore, a stirring blade is fixedly installed at the end of the stirring rod 3 away from the liquid chamber 204. The stirring blade is perpendicular to the stirring rod 3, and multiple sets of guide holes are opened on the surface of the stirring blade. The stirring blade can expand the stirring range, and the guide holes can break the inertia of liquid flow, form local turbulence, and improve the mixing efficiency.

[0055] Furthermore, the nozzles 301 of the stirring rod 3 are spaced apart along the length of the stirring rod 3, and the spraying direction of the nozzles 301 forms an angle of 30°-60° with the rotational tangent direction of the stirring rod 3. This angle design allows the added liquid to form a dual effect of "spraying + stirring" with the rotating stirring rod 3 after being sprayed out, avoiding the accumulation of the added liquid after direct spraying and promoting the rapid dispersion of the added liquid.

[0056] Furthermore, a one-way valve is fixedly installed at the liquid outlet 401 of the inner tube 4. The one-way valve is directed from the inner tube 4 to the liquid chamber 204 to prevent the liquid in the mixing chamber 1 from flowing back into the inner tube 4 through the liquid outlet 401, thus avoiding cross-contamination between different batches of liquid and ensuring that the added liquid is only delivered to the liquid chamber 204 in one direction.

[0057] Furthermore, multiple sets of liquid level sensors are arranged at intervals along the vertical direction on the inner side wall of the mixing chamber 1. The liquid level sensors are electrically connected to the control terminal of the lifting mechanism. The liquid level sensors collect the liquid level height signal in the mixing chamber 1 in real time and transmit the signal to the control terminal of the lifting mechanism. The control terminal drives the lifting tank 6 to move up and down synchronously according to the liquid level height to ensure that the added liquid is always injected into the height layer corresponding to the current liquid level.

[0058] In this embodiment, during operation:

[0059] Example 1:

[0060] Batch-by-batch stratified addition and mixing: first inject the base solution, then add the additive solution;

[0061] 1. Base liquid injection: Inject base liquid into mixing chamber 1 through inlet 101 at the top of mixing chamber 1 until the preset liquid level is reached, then close the valve of inlet 101.

[0062] 2. Equipment Start-up Preparation: Start the water pump to allow the additive liquid in the external liquid tank, such as pesticide concentrate, to flow into the lifting tank 6 through the infusion pipe 604, ensuring that there is no air residue in the infusion pipe 604; start the first motor 202, which drives the rotating tube 2 to rotate at a constant speed through the drive gear 203 and the driven gear 201. The rotating tube 2 drives the liquid chamber 204, the stirring rod 3 and the stirring blade to rotate synchronously, thus initially agitating the base liquid.

[0063] 3. Layered addition of additive solution: Start the second motor 501 to drive the reciprocating screw 5 to rotate, causing the lifting tank 6 to slowly descend or rise along the guide groove of the inner tube 4; when the through hole 601 of the lifting tank 6 is aligned with the liquid outlet 401 at a certain height of the inner tube 4, the additive solution in the lifting tank 6 flows into the corresponding liquid chamber 204 through the through hole 601 and the liquid outlet 401, and is then sprayed into the base liquid from the nozzle 301 through the hollow stirring rod 3; by controlling the speed of the second motor 501, the residence time of the lifting tank 6 at different heights can be adjusted to achieve precise control of the amount of additive solution used at each height layer. For example, for the base liquid that is prone to sedimentation, it can stay in the lower layer for a longer time to increase the amount of additive solution used.

[0064] 4. Mixing and Discharging: After the lifting tank 6 has completed the addition of the additive liquid to the full height layer, keep the first motor 202 running for 5-10 minutes to ensure that the additive liquid and the base liquid are fully mixed; after the mixing is completed, open the valve of the bottom outlet 102 of the mixing chamber 1 to discharge the mixed pesticide and complete one mixing operation.

[0065] Example 2: Synchronous dynamic stratified mixing, with two liquid streams added simultaneously;

[0066] 1. Simultaneously start the delivery system: Simultaneously start the base liquid delivery pump and the additive liquid delivery pump. The base liquid is continuously injected into the mixing chamber 1 through the inlet 101, and the additive liquid flows into the lifting tank 6 through the delivery pipe 604. Adjust the delivery flow rate ratio of the two liquids to ensure that the mixing concentration meets the preset requirements.

[0067] 2. Synchronous linkage between liquid level and lifting tank 6: The liquid level sensor on the inner wall of the mixing chamber 1 collects the liquid level height signal in real time and transmits the signal to the control terminal of the lifting mechanism; the control terminal drives the second motor 501 to operate according to the liquid level height, so that the lifting tank 6 rises synchronously with the liquid level, and always keeps the through hole 601 of the lifting tank 6 aligned with the liquid outlet hole 401 corresponding to the current liquid level height.

[0068] 3. Instant Mixing: The additive liquid flows into the liquid chamber 204 through the through hole 601 and the liquid outlet 401, and is then sprayed into the base liquid through the nozzle 301 of the stirring rod 3. The rotating stirring rod 3 and stirring blades instantly disperse the additive liquid. The 30°-60° angle design of the nozzle 301 allows the additive liquid to diffuse along the stirring tangent, quickly blending with the base liquid at the same height and avoiding stratification. 4. Full Chamber Homogenization and Discharge: When the liquid level in the mixing chamber 1 reaches the maximum designed height, the base liquid delivery pump and water pump are turned off. The first motor 202 is kept running for 3-5 minutes, while the lifting tank 6 is controlled to move up and down once to perform a second homogenization of the liquid in the entire chamber. After homogenization is completed, the discharge outlet valve 102 is opened to discharge the mixed pesticide, completing the mixing operation.

[0069] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0070] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0071] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0072] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0073] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A liquid pesticide mixing device, comprising a mixing chamber (1), wherein the mixing chamber (1) is provided with an inlet (101) at the top and an outlet (102) at the bottom, characterized in that: The mixing chamber (1) has a rotating tube (2) connected vertically at the bottom center of its inner cavity. The mixing chamber (1) is equipped with a mounting frame and a driving mechanism at its top. The driving mechanism is used to drive the rotating tube (2) to rotate around its own axis. The mounting bracket has an inner tube (4) fixedly installed at the bottom, and the inner tube (4) is coaxially arranged inside the rotating tube (2); The outer wall of the rotating tube (2) is provided with multiple sets of liquid chambers (204) at intervals in the vertical direction, and the side wall of the inner tube (4) is provided with multiple sets of liquid outlet holes (401) in the vertical direction. The inner cavity of the inner tube (4) is connected to each of the liquid chambers (204) through the liquid outlet holes (401). Each set of liquid chambers (204) has multiple sets of stirring rods (3) fixedly installed on its sidewalls. The multiple sets of stirring rods (3) are radially distributed with the center of the liquid chamber (204) as the reference. Each of the stirring rods (3) is a hollow structure, and the inner cavity of the stirring rod (3) is connected to the corresponding liquid cavity (204); each of the stirring rods (3) has multiple sets of nozzles (301) on its side wall. A lifting mechanism is fixedly installed on the mounting frame, and a lifting bucket (6) is slidably connected inside the inner tube (4). The lifting tank (6) has multiple sets of through holes (601) on its side wall, and each of the through holes (601) is provided in a one-to-one correspondence with each of the liquid outlet holes (401); The top of the lifting tank (6) is sealed with an infusion tube (604). The lifting mechanism is used to drive the lifting tank (6) to move up and down along the axis of the inner tube (4) so ​​as to achieve selective docking between the lifting tank (6) and each of the liquid chambers (204).

2. The liquid pesticide mixing device according to claim 1, characterized in that, The drive mechanism includes a first motor (202), which is fixedly installed on the top of the mounting frame. A drive gear (203) is fixedly installed on the output shaft end of the first motor (202). A driven gear (201) is fixedly sleeved on the outer side wall of the top of the rotating tube (2). The drive gear (203) meshes with the driven gear (201) for transmission.

3. The liquid pesticide mixing device according to claim 1, characterized in that, The end of the infusion tube (604) away from the lifting tank (6) is sealed with a water pump, and the water inlet of the water pump is connected to the external liquid tank.

4. The liquid pesticide mixing device according to claim 1, characterized in that: The lifting mechanism includes a second motor (501), which is fixedly installed on the top of the mounting frame. The output shaft of the second motor (501) is fixedly connected to a reciprocating lead screw (5). A positioning component (602) is fixedly provided on the outer wall of the lifting bucket (6). A guide groove is opened on the inner wall of the inner tube (4) in the vertical direction. The positioning component (602) is slidably engaged with the guide groove. An internal threaded tube (603) is fixedly provided in the center of the lifting bucket (6). The internal threaded tube (603) is threadedly connected to the reciprocating lead screw (5).

5. The liquid pesticide mixing device according to claim 1, characterized in that: The outer wall of the lifting bucket (6) is in close contact with the inner wall of the inner tube (4), and the inner wall of the rotating tube (2) is in close contact with the outer wall of the inner tube (4).

6. The liquid pesticide mixing device according to claim 1, characterized in that: The stirring rod (3) is fixedly equipped with a stirring blade at one end away from the liquid chamber (204). The stirring blade is perpendicular to the stirring rod (3), and multiple sets of guide holes are opened on the surface of the stirring blade.

7. The liquid pesticide mixing device according to claim 1, characterized in that: The nozzles (301) of the stirring rod (3) are distributed at intervals along the length of the stirring rod (3), and the spraying direction of the nozzles (301) forms an angle of 30°-60° with the rotational tangent direction of the stirring rod (3).

8. The liquid pesticide mixing device according to claim 1, characterized in that: A one-way valve is fixedly installed at the liquid outlet (401) of the inner tube (4), and the one-way valve is directed from the inner tube (4) to the liquid chamber (204).

9. The liquid pesticide mixing device according to claim 1, characterized in that: Multiple sets of liquid level sensors are arranged at intervals along the vertical direction on the inner wall of the mixing chamber (1). The liquid level sensors are electrically connected to the control end of the lifting mechanism to provide real-time feedback on the liquid level height and control the lifting tank (6) to lift synchronously.

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