A pesticide mixing device

Abstract

This utility model relates to the technical field of pesticide mixing devices, and discloses a pesticide preparation mixing device, including a mixing tank, a drive motor, a connecting shaft, and a mixing assembly, a first scraper plate, and a second scraper plate fixed on the connecting shaft. The mixing assembly integrates a propeller-type mixing paddle located at the bottom and a paddle-type mixing blade located at the top. The propeller-type mixing paddle generates a macroscopic circulating flow, while the paddle-type mixing blade is provided with teeth for strong shearing and guide holes for creating turbulence. The first scraper plate is connected to the mixing assembly and fits against the tank wall, and the second scraper plate is connected to the connecting shaft and fits against the bottom of the tank; the two work together. Through the above structure, this utility model solves the problems of uneven mixing, poor emulsification effect, long dissolution time, difficult cleaning, and pesticide residue in existing mixing devices, achieving efficient and uniform mixing and thorough automatic cleaning, thus improving the practicality and environmental friendliness of the pesticide preparation device.

Description

Technical Field

[0001] This utility model relates to the technical field of pesticide mixing devices, and in particular to a pesticide preparation and mixing device. Background Technology

[0002] The scientific formulation of pesticides is a crucial step in ensuring precise application, effective control, and crop safety. In agricultural production, pesticide concentrates or powders need to be diluted and mixed with water in specific proportions to form a uniform and stable solution before use. Currently, pesticide formulation is typically completed in a mixing tank using a stirring device.

[0003] Existing pesticide mixing devices mostly use simple agitators, such as propeller-type or paddle-type agitators. When these devices are in operation, although they can move most of the liquid in the tank, they easily create dead zones on the inner wall and bottom of the mixing tank. Due to the low flow rate, denser pesticide components such as wettable powders tend to settle at the bottom of the tank, while emulsifiable concentrate pesticides suffer from insufficient shear force, resulting in incomplete oil film breakdown and difficulty in forming a stable emulsion. Ultimately, this leads to uneven concentrations of the prepared pesticide solution throughout the tank.

[0004] Insufficient mixing and residue not only directly affect pesticide efficacy but can also lead to serious subsequent problems. After preparation, pesticide residues that adhere to the tank walls or settle at the bottom due to inadequate mixing are difficult to remove with simple rinsing. This not only results in insufficient pesticide concentration and poor pest control, but more seriously, if different types of pesticides are subsequently prepared, the residues can cause cross-contamination, potentially leading to phytotoxicity or neutralizing the efficacy of subsequent pesticides. Furthermore, manually cleaning these high-concentration residues is not only tedious and laborious but also increases the risk of operators being exposed to toxic and harmful substances. Therefore, existing mixing devices, due to structural limitations, have significant deficiencies in both the mixing and cleaning processes—the two core aspects.

[0005] This invention proposes a pesticide preparation and mixing device to address the shortcomings of existing technologies. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a pesticide preparation and mixing device, which aims to improve the problems of insufficient mixing, poor emulsification and dispersion effect for different formulations of pesticides, slow dissolution rate of pesticides, and pesticide residues and cross-contamination caused by the difficulty in cleaning the equipment in the existing technology.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A pesticide preparation and mixing device includes a mixing tank, a drive motor, a connecting shaft, a mixing assembly, a first scraper, and a second scraper. The mixing tank is equipped with a pesticide inlet pipe, a water inlet pipe, and a water outlet pipe. The connecting shaft is rotatably connected to the drive motor and extends into the mixing tank. The mixing assembly is fixedly connected to the connecting shaft and includes a propeller-type mixing paddle and a paddle-type mixing blade. The first scraper is fixedly connected to the mixing assembly and adapted to conform to the inner wall of the mixing tank; the second scraper is fixedly connected to the connecting shaft and adapted to conform to the bottom of the mixing tank.

[0009] Preferably, the stirring assembly further includes a stirring rod, the paddle-type stirring blade is fixedly connected to the stirring rod, and the first scraper is fixedly connected to the stirring rod.

[0010] Preferably, the paddle-type stirring blade is positioned above the propeller-type stirring blade along the axial direction of the connecting shaft.

[0011] Preferably, the paddle-type stirring blades have integrally formed teeth on their edges for shearing fluid.

[0012] Preferably, the paddle-type stirring blade is provided with a flow guide hole that penetrates the surface of the blade.

[0013] Preferably, the first scraper plate has a triangular elongated structure.

[0014] Preferably, the second scraper plate has a triangular strip structure.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, by setting up a composite stirring component that combines a propulsion stirring paddle with a paddle-type stirring blade with teeth and guide holes, the problems of insufficient stirring, poor emulsification and dispersion of pesticides of different formulations such as emulsifiable concentrates and powders, slow dissolution rate of pesticides, and the existence of stirring dead zones in the prior art are solved. It achieves an organic combination of macroscopic circulation and microscopic shearing and turbulence of the pesticide solution, ensuring that the pesticide can be quickly, fully and uniformly mixed and emulsified, and significantly improving the stability of the concentration of the prepared pesticide.

[0017] 2. In this utility model, by setting a first scraper plate and a second scraper plate respectively attached to the inner wall and bottom of the mixing tank, and having them work in coordination with the mixing assembly, the problem of difficult cleaning of the mixing device and cross-contamination of the reagents due to residues in the prior art is solved. It achieves the technical effect of synchronous mechanical scraping and rinsing of the inner wall and bottom of the mixing tank, realizing fully automatic and efficient cleaning of the equipment, effectively avoiding reagent residues and cross-contamination, and improving the practicality and environmental friendliness of the device. Attached Figure Description

[0018] Figure 1This is a three-dimensional schematic diagram of a pesticide preparation and mixing device proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the mixing tank of a pesticide preparation mixing device proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the first scraper plate of a pesticide preparation and mixing device proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the stirring assembly of a pesticide preparation stirring device proposed in this utility model;

[0022] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0023] Legend:

[0024] 1. Mixing tank; 2. Inlet pipe; 3. Inlet pipe; 4. Outlet pipe; 5. Drive motor; 6. Connecting shaft; 7. Mixing assembly; 71. Propeller-type mixing blade; 72. Mixing rod; 73. Paddle-type mixing blade; 74. Tooth; 75. Guide hole; 8. First scraper; 9. Second scraper. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please refer to Figures 1 to 5 This utility model provides a pesticide preparation and mixing device, which aims to solve the problems of uneven mixing and difficult cleaning of pesticide preparation and mixing devices in the prior art, resulting in pesticide residues and cross-contamination.

[0027] like Figure 1 , Figure 3 and Figure 5 As shown, the pesticide preparation and mixing device includes a mixing tank 1, a drive motor 5, a connecting shaft 6, a mixing assembly 7, a first scraper 8, and a second scraper 9. The mixing tank 1 serves as the container for the entire device, with an inlet pipe 2 for inputting the pesticide solution and an inlet pipe 3 for inputting dilution water on its upper part, and an outlet pipe 4 for discharging the liquid on its bottom side wall.

[0028] The power and transmission system of the device consists of a drive motor 5 and a connecting shaft 6. The drive motor 5 is mounted on the external support structure of the mixing tank 1, and its output end is rotatably connected to one end of the connecting shaft 6. The other end of the connecting shaft 6 extends vertically into the interior of the mixing tank 1 to transmit power and torque to the internal moving parts.

[0029] The core stirring and self-cleaning mechanism of the device is integrated on the connecting shaft 6, working together as a whole. This mechanism mainly consists of a stirring assembly 7, a first scraper 8, and a second scraper 9. The stirring assembly 7 is fixedly connected to the connecting shaft 6 and rotates synchronously at high speed with the connecting shaft 6. The stirring assembly 7 is a composite structure, which includes a propeller-type stirring paddle 71 and a paddle-type stirring blade 73, used to achieve macroscopic circulation and microscopic shear emulsification of the liquid in the tank. The first scraper 8 is fixedly connected to the stirring assembly 7, and its structure is adapted to fit against the inner wall of the stirring tank 1. The second scraper 9 is fixedly connected to the end of the connecting shaft 6, and its structure is adapted to fit against the bottom of the stirring tank 1. The first scraper 8 and the second scraper 9 help eliminate dead corners in the flow field during stirring, and serve as core components to scrape off residues during cleaning.

[0030] To solve the above-mentioned technical problems, the core of the technical solution of this embodiment is that the stirring component 7 has a composite structure inside, and the first scraper 8 and the second scraper 9 form a specific structural fit and connection relationship with the stirring component 7 and the connecting shaft 6. This combined structure ensures efficient mixing and thorough self-cleaning function.

[0031] Please refer to the following carefully. Figure 3 , Figure 4 and Figure 5 The core structure will be described in detail below:

[0032] The internal structure of the stirring assembly 7 includes a stirring rod 72 that serves as a support and transmission frame. The stirring rod 72 is sleeved and fixed on the connecting shaft 6 and rotates synchronously with the connecting shaft 6. The paddle-type stirring blade 73 is located above the stirring rod 72, and the propeller-type stirring paddle 71 is fixedly connected to the connecting shaft 6 and is located below the paddle-type stirring blade 73 along the axial direction of the connecting shaft 6.

[0033] Specifically, the paddle-type stirring blade 73 is the core component for achieving micro-emulsification and dispersion. Multiple teeth 74 are integrally formed on the blade edges to apply strong shear force to the fluid. Simultaneously, guide holes 75 are formed through the surface of the paddle-type stirring blade 73 to create localized turbulence as the liquid passes through, thereby enhancing mixing. The propeller-type stirring paddle 71 has a helical blade structure to generate strong axial thrust, driving the liquid inside the container to form a top-down circulating flow field.

[0034] Meanwhile, the first scraper 8 is fixedly connected to the stirring rod 72 and rotates synchronously with it. The first scraper 8 is a triangular elongated structure, with its long side adapted to fit against the inner wall of the mixing tank 1, used to agitate the fluid on the wall surface and scrape away any adhering substances. The second scraper 9 is fixedly connected to the bottom of the connecting shaft 6, also a triangular elongated structure, with its long side adapted to fit against the bottom of the mixing tank 1. This synergistic structure of the stirring assembly 7 and the two scrapers 8 and 9 ensures that there are no dead corners in the tank during stirring and that no residue is missed during cleaning.

[0035] As a preferred implementation, to clarify the internal power transmission path and structural layout, please refer to... Figure 3 and Figure 5 The stirring assembly 7 integrates the structure and transmits force through its internal stirring rod 72. The stirring rod 72 is fixedly connected to the connecting shaft 6, and the paddle stirring blade 73 is fixedly connected to the outer periphery of the stirring rod 72. The first scraper plate 8 is also fixedly connected to the stirring rod 72. In this way, the drive motor 5 can simultaneously drive the paddle stirring blade 73 and the first scraper plate 8 to rotate synchronously via the connecting shaft 6 and the stirring rod 72. In this embodiment, the paddle stirring blade 73 is located above the propeller stirring paddle 71 along the axial direction of the connecting shaft 6. This vertical arrangement is conducive to forming a synergistic mixing flow field.

[0036] As another preferred embodiment, to further improve the shear emulsification and mixing effect of pesticides of different formulations, please refer to... Figure 4 The structure of the paddle stirring blade 73 has been further optimized. Multiple teeth 74 are provided on its edge. These teeth 74 are integrally formed on the paddle stirring blade 73 and can generate a high-intensity shearing force on the liquid when rotating. At the same time, multiple guide holes 75 penetrating the surface of the blade are also provided on the surface of the paddle stirring blade 73. These guide holes 75 can guide the fluid and create turbulence.

[0037] As another preferred embodiment, in order to achieve thorough scraping and disturbance of residues on the barrel wall and bottom, both the first scraper plate 8 and the second scraper plate 9 adopt a triangular strip structure. The cutting edge of this structure can better fit the inner wall and bottom of the mixing barrel 1, thereby achieving efficient physical scraping during rotation.

[0038] Working principle: When pesticides are being prepared, the drive motor 5 starts and drives the stirring assembly 7, the first scraper 8, and the second scraper 9 to rotate synchronously via the connecting shaft 6. At this time, the propeller-type stirring paddle 71 located at the bottom of the stirring assembly 7 generates a strong downward axial thrust on the liquid due to its spiral blade structure. This rapidly pushes the pesticide concentrate input from the inlet pipe 2 and the dilution water input from the water inlet pipe 3 downward, and drives the liquid in the entire stirring tank 1 to form a macroscopic circulation flow field from top to bottom. This breaks the tendency of the pesticide solution to separate into layers at the source. At the same time, the liquid located at the bottom... The paddle-type stirring blade 73 rotates at high speed with the stirring rod 72. The teeth 74 on the edge of the blades exert a strong shearing force on the fluid, which can efficiently break the oil film of emulsifiable concentrate pesticides and disperse the particle agglomerates of powders. Meanwhile, the guide holes 75 on the blades create local turbulence when the fluid passes through, further enhancing the mixing degree in the micro-region. During this process, the first scraper 8 and the second scraper 9 disturb the fluid on the inner wall and bottom of the mixing tank 1, respectively, eliminating the dead zones of the wall layer and the bottom, ensuring that the pesticide can be fully and uniformly mixed and emulsified.

[0039] When cleaning is required after the medicine preparation is completed, the drive motor 5 continues to run, and cleaning water is introduced into the mixing tank 1 through the inlet pipe 3. At this time, the first scraper 8 uses its triangular strip structure to closely adhere to the inner wall of the mixing tank 1 and rotate to scrape off the attached residual medicine. The second scraper 9 also scrapes off the residue at the bottom of the tank in the same way. With the synergistic action of the two scrapers, all the residue is collected and discharged with the cleaning water through the outlet pipe 4. During this cleaning process, the propeller-type stirring paddle 71 and the paddle-type stirring blade 73 in the stirring assembly 7 continuously agitate the cleaning water, forming a circulating flow and turbulent flow to thoroughly flush the inside of the mixing tank 1, further ensuring no medicine residue, and finally achieving automatic, efficient, and dead-angle-free cleaning of the equipment.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pesticide preparation and mixing device, comprising: A mixing tank (1) is provided with a medicine inlet pipe (2), a water inlet pipe (3) and a water outlet pipe (4); Drive motor (5); A connecting shaft (6) is rotatably connected to the output end of the drive motor (5) and extends into the stirring tank (1); A stirring assembly (7) is fixedly connected to the connecting shaft (6). The stirring assembly (7) includes a propeller-type stirring paddle (71) and a paddle-type stirring blade (73). Its features are, The pesticide preparation and mixing device also includes a first scraper (8) and a second scraper (9); The first scraper (8) is fixedly connected to the stirring assembly (7) and is adapted to fit against the inner wall of the stirring tank (1); The second scraper (9) is fixedly connected to the connecting shaft (6) and is adapted to fit against the bottom of the mixing tank (1).

2. The pesticide preparation and mixing device according to claim 1, characterized in that: The stirring assembly (7) also includes a stirring rod (72), the paddle stirring blade (73) is located above the stirring rod (72), and the first scraper (8) is fixedly connected to the stirring rod (72).

3. The pesticide preparation and mixing device according to claim 1, characterized in that: The paddle-type stirring blade (73) is positioned above the propulsion stirring blade (71) along the axial direction of the connecting shaft (6).

4. The pesticide preparation and mixing device according to claim 1, characterized in that: The paddle-type stirring blade (73) has integrally formed teeth (74) on its edge for shearing fluid.

5. The pesticide preparation and mixing device according to claim 1, characterized in that: The paddle-type stirring blade (73) is provided with a flow guide hole (75) that penetrates the surface of its blade.

6. The pesticide preparation and mixing device according to claim 1, characterized in that: The first scraper plate (8) is a triangular strip structure.

7. The pesticide preparation and mixing device according to claim 1, characterized in that: The second scraper (9) has a triangular strip structure.

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