A pesticide raw material primary blending mixing kettle and its stirrer

Abstract

The utility model provides a kind of pesticide raw material primary blending is used mixed kettle stirrer, it is characterized by: including stirring rod and stirring head, the stirring head is sleeved on stirring rod;The stirring head includes 2 toothed discs, 2 toothed discs are distributed along the axial direction of stirring rod, the disc face of toothed disc is perpendicular to the axial direction of stirring rod, the center of toothed disc coincides with the axis of stirring rod, the upper side of toothed disc is evenly distributed with multiple teeth in circumferential direction, teeth are perpendicular to toothed disc;At least two webs are provided between two toothed discs, two ends of web are connected with 2 toothed discs respectively, spacing is provided between web and stirring rod, all webs are evenly distributed along the circumferential direction of toothed disc.The mixed kettle stirrer of the utility model can greatly reduce the granularity of mixed liquid medicine, improve product quality, and also improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of pesticide suspension production equipment, and in particular to a mixing tank and its agitator for primary preparation of pesticide raw materials. Background Technology

[0002] The primary mixing tank in a pesticide suspension production line is mainly used for the initial crushing and mixing of pesticide raw materials. Then, through a primary storage tank, driven by a pneumatic diaphragm pump, the mixed pesticide solution is drawn into a sand mill for further grinding in subsequent processing stages. In existing technology, the agitator head of the primary mixing tank typically uses a standard paddle type, as shown in the attached image. Figure 1 The component 1-1 shown is the paddle of the stirring head. When the stirring head rotates, it drives the paddle to rotate, and the paddle pushes the liquid medicine in the mixing vessel to rotate, so as to achieve the purpose of mixing the raw materials.

[0003] However, during production, large solid particles are frequently found in the mixed liquid in the primary storage tank, with some particles even exceeding 2 cm in diameter. Such primary mixtures can increase the resistance to the flow of the liquid in the transport pipeline, increasing the workload of the pneumatic diaphragm pump, shortening its lifespan, and in severe cases, causing pipe blockage. Furthermore, the presence of large-diameter particles in the mixed liquid increases the pressure on the material being ground in the sand mill, affecting its lifespan and potentially leading to substandard fineness in the final product, compromising product quality. Alternatively, extending the grinding time in the sand mill can improve fineness, but this reduces production efficiency. Utility Model Content

[0004] To address the problems in the prior art, this utility model provides a mixing tank agitator for primary preparation of pesticide raw materials, and a mixing tank using the above-mentioned mixing tank agitator, in order to solve the problems in the prior art where the mixed pesticide solution produced by mixing tank has excessively large particles, thereby affecting product quality, reducing equipment life, and causing low production efficiency.

[0005] To achieve the purpose of this utility model, this utility model provides a mixing tank stirrer for primary preparation of pesticide raw materials. Its innovation lies in: including a stirring rod and a stirring head, wherein the stirring head is mounted on the stirring rod; the stirring head includes two toothed discs, which are distributed along the axial direction of the stirring rod, with the disc surface perpendicular to the axial direction of the stirring rod, and the center of the disc coinciding with the axis of the stirring rod; multiple toothed plates are evenly distributed circumferentially on the upper side of the toothed discs, and the toothed plates are perpendicular to the toothed discs; at least two ribs are provided between the two toothed discs, with both ends of the ribs connected to the two toothed discs respectively, and a gap is provided between the ribs and the stirring rod; all ribs are evenly distributed circumferentially along the toothed discs.

[0006] Furthermore, the toothed plate is triangular, rectangular, or trapezoidal; the toothed plate is positioned near the edge of the toothed disc.

[0007] Furthermore, there are 4, 6, or 8 stiffeners; the stiffeners are arranged near the edge of the toothed disc, and the surface of the stiffeners is arranged radially along the toothed disc.

[0008] Furthermore, the stiffener is a trapezoidal shape that is narrower at the top and wider at the bottom.

[0009] Furthermore, the stirring head is located in the lower middle part of the stirring rod.

[0010] Furthermore, it also includes a variable frequency speed control motor for driving the stirring rod to rotate.

[0011] This utility model also provides a mixing kettle for primary preparation of pesticide raw materials, the innovation of which is that the mixing kettle adopts the above-mentioned mixing kettle agitator.

[0012] The inventive principle of this utility model is as follows:

[0013] Through long-term research on the working process of existing mixing tanks, the inventors discovered that the raw materials of pesticide suspensions themselves contain coarse particles or large lumps. When operators put these raw materials into the mixing tank for blending, the existing agitators have difficulty breaking down these coarse particles or lumps. The main reason for this is that the impellers of the agitator head mainly drive the liquid to rotate and mix, and do not have the ability to break down the particles themselves. Furthermore, the inventors also found that the agitator head causes the liquid to form a laminar vortex during operation. This phenomenon reduces the probability of contact, collision and mixing between the raw materials, thus affecting the uniformity of the liquid mixture.

[0014] In this invention, the inventor creatively employs two coaxially stacked toothed discs, with multiple toothed blades evenly distributed along the circumference on each disc. When the stirring head rotates, these toothed blades can effectively shear coarse particles in the rotating liquid, thereby greatly reducing the particle size of the mixed liquid. In actual production, the particle size of the solid particles in the mixed liquid produced using this invention can reach below the millimeter level.

[0015] On the other hand, multiple ribs are set between the two toothed discs, which not only help to drive the rotation of the liquid medicine, but also have a gap between them and the stirring rod, allowing the liquid medicine to flow and mix between the ribs and the stirring rod. This greatly reduces the occurrence of laminar vortex phenomena, allowing the liquid medicine to flow fully inside and outside the structure of the stirring head, ensuring full contact and mixing between various raw materials. It also increases the contact opportunities between the toothed discs and large-particle solid raw materials. Thus, through multiple shearing of coarse particles by the toothed discs, the solid particles are fully refined, further improving the mixing uniformity and fineness of the liquid medicine. This reduces the burden on subsequent process equipment and plays a role in improving the quality of the final product. The uniform and refined liquid medicine can also greatly reduce flow resistance, reduce the load on the transport equipment, and increase the service life of the equipment. In addition, it also reduces the time for further grinding of the liquid medicine, greatly improving production efficiency.

[0016] As an optimization, a variable frequency drive motor is adopted. It can operate at a low speed of 60-100 r / min during the mixing stage of surfactants and other additives with water. As solid raw materials are gradually added, the motor speed is gradually increased to meet the crushing and mixing requirements. Only after all solid raw materials have been added does the speed increase to a stable operating speed of 1100-1200 r / min. Compared to the fixed-speed motors used in existing technologies, this improvement not only allows the motor power to adapt to different production volumes, achieving energy savings and cost reduction, but also reduces the impact on the power supply system due to sudden load increases, and extends the service life of electrical equipment.

[0017] The method of this utility model has the following beneficial effects: the mixing tank stirrer of this utility model can greatly reduce the particle size of the mixed medicine solution, improve product quality, and also improve production efficiency. Attached Figure Description

[0018] The accompanying drawings of this utility model are described below.

[0019] Appendix Figure 1 This is a schematic diagram of the existing technology;

[0020] Appendix Figure 2 This is a schematic diagram of the structure of this utility model.

[0021] In the diagram: 1. Stirring rod; 2. Stirring head; 3. Drive motor; 4. Coupling; 5. Mixing vessel; 21. Gear disc; 22. Gear blade; 23. Rib plate; 1-1. Paddle blade. Detailed Implementation

[0022] The present invention will be further described below with reference to the embodiments.

[0023] As attached Figure 2The agitator shown in the mixing vessel for primary preparation of pesticide raw materials is located at the center of the mixing vessel 5. In addition to essential components such as the drive motor 3 and coupling 4, it also includes a stirring rod 1 and a stirring head 2. The stirring head 2 is mounted on the stirring rod 1. The stirring head 2 includes two toothed discs 21, which are distributed along the axial direction of the stirring rod. The disc surface of the toothed discs 21 is perpendicular to the axial direction of the stirring rod 1, and the center of the toothed discs 21 coincides with the axis of the stirring rod 1. Multiple toothed plates 22 are evenly distributed circumferentially on the upper side of the toothed discs 21, and the toothed plates 22 are perpendicular to the toothed discs 21. At least two ribs 23 are provided between the two toothed discs 21. The two ends of the ribs 23 are connected to the two toothed discs 21 respectively. There is a gap between the ribs 23 and the stirring rod 1. All the ribs 23 are evenly distributed circumferentially along the toothed discs 21.

[0024] To further improve the shearing and crushing effect on solid particles, the toothed plate 22 is triangular, rectangular or trapezoidal; the toothed plate 2-2 is set near the edge of the toothed disc 21.

[0025] To further improve the mixing uniformity of the swaying, there are 4, 6 or 8 stiffeners 23; the stiffeners 23 are arranged near the edge of the toothed disc 21, and the surface of the stiffeners 23 is arranged radially along the toothed disc 21.

[0026] To further reduce the occurrence of laminar vortices and improve the mixing uniformity of the medicine solution, the stiffener 23 is a trapezoid with a narrow top and a wide bottom.

[0027] To achieve mixing of a smaller amount of medicine, the stirring head 2 is located in the lower middle part of the stirring rod 1.

[0028] To reduce energy consumption and avoid impacting the power supply system, drive motor 3 adopts a variable frequency speed control motor.

Claims

1. A mixing vessel stirrer for primary preparation of pesticide raw materials, characterized in that: The device includes a stirring rod and a stirring head, with the stirring head mounted on the stirring rod. The stirring head includes two toothed discs distributed along the axial direction of the stirring rod. The disc surfaces are perpendicular to the axial direction of the stirring rod, and the centers of the discs coincide with the axis of the stirring rod. Multiple toothed blades are evenly distributed circumferentially on the upper surface of the discs, and the blades are perpendicular to the discs. At least two ribs are provided between the two discs, with each end of the rib connected to one of the two discs. A gap is provided between the ribs and the stirring rod, and all ribs are evenly distributed circumferentially along the discs.

2. The mixing vessel stirrer for primary preparation of pesticide raw materials as described in claim 1, characterized in that: The toothed plates are triangular, rectangular, or trapezoidal; the toothed plates are positioned near the edge of the toothed disc.

3. The mixing vessel stirrer for primary preparation of pesticide raw materials as described in claim 1 or 2, characterized in that: The number of stiffeners is 4, 6, or 8; the stiffeners are arranged near the edge of the toothed disc, and the surface of the stiffeners is arranged radially along the toothed disc.

4. The mixing vessel stirrer for primary preparation of pesticide raw materials as described in claim 3, characterized in that: The stiffening plate is trapezoidal, narrower at the top and wider at the bottom.

5. The mixing vessel stirrer for primary preparation of pesticide raw materials as described in claim 1 or 2, characterized in that: The stirring head is located in the lower middle part of the stirring rod.

6. The mixing vessel stirrer for primary preparation of pesticide raw materials as described in claim 1 or 2, characterized in that: It also includes a variable frequency speed control motor for driving the stirring rod to rotate.

7. A mixing vessel for primary preparation of pesticide raw materials, characterized in that: The mixing vessel employs the mixing vessel agitator as described in any one of claims 1 to 6.

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