A mixing device for indoxacarb production

Abstract

The utility model discloses a kind of mixing devices for indoxacarb production, belong to indoxacarb production equipment field.The device includes mixing kettle, kettle cover, driving motor, stirring shaft, stirring assembly and feed inlet, the kettle cover is covered in the top end of mixing kettle, the driving motor is fixedly installed in the top surface of kettle cover, one end of the stirring shaft is connected with driving motor output end, the other end is extended to the inside of mixing kettle and is connected with stirring assembly and penetrates kettle cover, the feed inlet is located in kettle cover top side and is communicated with the inside of mixing kettle, the inside of the feed inlet is equipped with flow guide hopper, dust pad is equipped in the junction of feed inlet and kettle cover, by integrally formed design between flow guide hopper and feed inlet, double-sided lamination cooperation between dust pad and feed inlet and kettle cover, both avoid fine powder raw materials to drift to joint gap, prevent dust from adsorbing accumulation in weld, effectively guarantee the cleanness of feeding environment, ensure that the concentration of raw materials in kettle is uniform simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of indoxacarb production equipment, and in particular to a mixing device for indoxacarb production. Background Technology

[0002] The mixing unit for indoxacarb production is a commonly used chemical equipment in the synthesis and processing of indoxacarb. It is mainly used to mix various raw materials required for indoxacarb production. Its core function is to uniformly blend materials of different forms, such as solid raw materials and liquid solvents, to provide a homogeneous raw material system for subsequent chemical reactions and purification processes. This ensures the stability and consistency of indoxacarb product production and is one of the key pieces of equipment connecting raw material pretreatment and subsequent processing stages.

[0003] The existing mixing device for indoxacarb production mainly consists of a mixing vessel, a vessel lid, a drive motor, a stirring shaft, a stirring assembly, and a feed inlet. Its working process is roughly as follows: First, the vessel lid is sealed at the top of the mixing vessel. After starting the drive motor, the motor drives the straight blades of the stirring assembly to rotate inside the mixing vessel via the stirring shaft. Subsequently, the fine powder and liquid raw materials for indoxacarb production are directly fed into the cylindrical feed inlet. The raw materials enter the mixing vessel under their own gravity and the airflow generated by the rotating blades. During the rotation of the straight blades, the raw materials inside the vessel undergo circular motion and up-and-down movement, achieving mixing. After mixing is complete, the drive motor is turned off, and the mixed raw materials are discharged, completing a single mixing operation. This leads to some technical problems: On the one hand, the feed inlet of the existing device is often cylindrical and welded to the lid. After welding, there are tiny weld seams at the joint. When feeding, the fine powder raw material is easily dispersed to the weld seam under the airflow. The rough surface of the weld seam easily adsorbs the fine powder. At the same time, the cylindrical feed inlet cannot guide the material flow. Some fine powder will escape from the tiny gaps in the weld seam to form dust. After the adsorbed fine powder accumulates, it will fall into the vessel in batches, resulting in uneven concentration of raw materials in the vessel. On the other hand, there is a certain gap between the side wall and the bottom rounded corner inclined part of the mixing vessel. During operation, the rotation of the straight blade cannot fully cover the side wall and bottom rounded corner area, which makes it easy for raw materials to be retained on the side wall and for viscous materials to adhere to the bottom rounded corner inclined part. Moreover, the adhered materials cannot be removed by the rotation of the blade. After long-term use, the material residue is prone to deterioration, affecting the purity of subsequent batches of products. Utility Model Content

[0004] The present invention provides a mixing device for indoxacarb production, which can solve the problem of fine powder raw materials easily escaping and accumulating in existing mixing devices for indoxacarb production.

[0005] A mixing device for indoxacarb production includes a mixing vessel, a vessel lid, a drive motor, a stirring shaft, a stirring assembly, and a feed inlet. The vessel lid is fitted over the top of the mixing vessel. The drive motor is fixedly installed on the top surface of the vessel lid. One end of the stirring shaft is connected to the output end of the drive motor, and the other end extends through the vessel lid into the interior of the mixing vessel and is connected to the stirring assembly. The feed inlet is located on one side of the top of the vessel lid and communicates with the interior of the mixing vessel. A guide hopper is provided inside the feed inlet, and a dustproof pad is provided at the connection between the feed inlet and the vessel lid.

[0006] Preferably, the guide hopper is funnel-shaped and integrally formed with the feed inlet.

[0007] Preferably, the dustproof pad has a ring structure and is detachably connected to the top surface of the vessel lid by bolts.

[0008] Preferably, the stirring assembly includes an upper impeller and a lower impeller; The upper blades are in contact with the inner wall of the mixing vessel; The lower blade edge is provided with an elastic scraper.

[0009] Preferably, the lower blade is arc-shaped, and the bottom of the mixing vessel is provided with a rounded inclined portion, the arc-shaped lower blade being adapted to the curvature of the rounded inclined portion.

[0010] Preferably, the elastic scraper is fixed to the lower blade by bolts.

[0011] Preferably, the bottom surface of the dustproof pad is in contact with the top surface of the vessel lid, and the top surface of the dustproof pad is in contact with the outer side wall of the bottom end of the feed inlet.

[0012] Preferably, the bottom end of the guide hopper extends into the interior of the mixing vessel, and the inner edge of the dustproof pad is attached to the outer wall of the guide hopper.

[0013] Preferably, the side of the elastic scraper away from the lower blade is in contact with the rounded corner inclined portion of the bottom of the mixing vessel.

[0014] Preferably, the surface of the elastic scraper is provided with micro-guide grooves.

[0015] The beneficial effects of this utility model are as follows: First, through the integrated molding design between the guide bucket and the feed inlet, and the double-sided fit between the dustproof pad and the feed inlet and the lid, the funnel-shaped structure of the guide bucket accurately guides the feed flow to the mixing area inside the mixing vessel. At the same time, the dustproof pad covers the connection gap between the feed inlet and the lid and fits against the outer wall of the guide bucket, thus completely blocking the dust escape path during the feeding process. This not only prevents fine powder raw materials from drifting into the connection gap, but also prevents dust from adsorbing and accumulating at the weld, effectively ensuring the cleanliness of the feeding environment. At the same time, it ensures that the raw material concentration in the vessel is uniform, laying the foundation for the full mixing of indoxacarb raw materials in the future. In addition, the detachable design of the dustproof pad facilitates later maintenance and replacement, improving the ease of operation and maintenance of the device. Furthermore, through the fitting arrangement between the upper blades and the side wall of the mixing vessel, the curvature matching between the lower arc-shaped blades and the rounded corner of the bottom of the mixing vessel, the fixed connection between the elastic scraper and the lower blades, and the tight fit between the elastic scraper and the rounded corner, the upper blades scrape the material on the side wall when rotating, while the lower blades drive the elastic scraper to slide and scrape off the material adhering to the bottom. In addition, the micro-guide grooves on the surface of the elastic scraper guide the scraped material to flow towards the center of the vessel, achieving all-round material cleaning of the side wall and bottom rounded corner area of ​​the mixing vessel. This reduces mixing dead corners, avoids long-term residue and deterioration of viscous materials, and ensures the stable purity of each batch of indoxacarb products. At the same time, the independent detachable design of the elastic scraper reduces equipment maintenance costs and replacement difficulty. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the mixing device used for indoxacarb production. Figure 2 This is a top view of the mixing unit used for indoxacarb production; Figure 3 for Figure 2 A sectional view along the cutting line AA.

[0017] Explanation of reference numerals in the attached figures: 1. Mixing vessel; 2. Vessel lid; 3. Drive motor; 4. Stirring shaft; 5. Stirring assembly; 51. Upper impeller; 52. Lower impeller; 6. Feed inlet; 7. Guide hopper; 8. Dustproof pad; 9. Elastic scraper; 10. Miniature guide channel; 11. Rounded corner inclined section. Detailed Implementation

[0018] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0019] like Figures 1 to 3As shown in the figure, a mixing device for indoxacarb production provided by this utility model embodiment includes a mixing vessel 1, a vessel lid 2, a drive motor 3, a stirring shaft 4, a stirring assembly 5, and a feed inlet 6. The vessel lid 2 covers the top of the mixing vessel 1. The drive motor 3 is fixedly installed on the top surface of the vessel lid 2. One end of the stirring shaft 4 is connected to the output end of the drive motor 3, and the other end extends through the vessel lid 2 into the interior of the mixing vessel 1 and is connected to the stirring assembly 5. The feed inlet 6 is located on one side of the top of the vessel lid 2 and communicates with the interior of the mixing vessel 1. A guide bucket 7 is provided inside the feed inlet 6, and a dustproof pad 8 is provided at the connection between the feed inlet 6 and the vessel lid 2.

[0020] The guide hopper 7 is located on the side of the feed inlet 6 facing the inside of the mixing vessel 1, forming a continuous material flow channel with the feed inlet 6. The dustproof pad 8 is installed at the bottom of the feed inlet 6 where it fits against the vessel cover 2. This structure is designed because there are tiny gaps at the weld between the existing feed inlet 6 and the vessel cover 2, and the weld is rough and easily adsorbs the fine powder raw materials used in the production of indoxacarb. The guide hopper 7 can guide the material flow directly into the inside of the mixing vessel 1, preventing the material flow from drifting to the joint gap. The dustproof pad 8 can cover the gap at the joint and the rough weld. The two together can effectively prevent dust from escaping from the gap, and at the same time prevent dust from adsorbing and accumulating at the weld, ensuring the cleanliness of the feeding process and the uniformity of the raw material concentration in the vessel.

[0021] The guide bucket 7 is funnel-shaped and is integrally formed with the feed inlet 6.

[0022] The trumpet-shaped structure causes the opening of the guide bucket 7 to gradually widen from top to bottom. The integral molding with the feed inlet 6 means that there are no splicing gaps between the two and no need for additional connecting parts. This structure is designed to allow fine powder raw materials to slide smoothly down the inclined inner wall of the guide bucket 7 during feeding, expanding the material flow coverage. At the same time, the integral molding method avoids the creation of new dust retention or escape channels at the splicing points, improves the structural stability and dustproof reliability of the guide bucket 7, and reduces the residue of raw materials during the guiding process.

[0023] The dustproof pad 8 has a ring structure and is detachably connected to the top surface of the vessel lid 2 by bolts.

[0024] The annular dustproof pad 8 can be perfectly fitted to the outer wall of the bottom end of the cylindrical feed inlet 6. The bolt connection can tightly press the dustproof pad 8 onto the top surface of the vessel lid 2. This structure is designed because the annular structure can fully cover the annular connection surface between the feed inlet 6 and the vessel lid 2, ensuring a seal without dead corners. The detachable bolt connection facilitates the installation, replacement and cleaning of the dustproof pad 8, solving the problem of easy aging and failure of fixed sealing structures after long-term use and difficulty in maintenance, and ensuring the stability of the dustproof effect during long-term use.

[0025] The stirring assembly 5 includes an upper blade 51 and a lower blade 52; The upper blade 51 is attached to the inner wall of the mixing vessel 1; The lower blade 52 is provided with an elastic scraper 9 at its edge.

[0026] The upper blade 51 and the lower blade 52 are arranged axially along the stirring shaft 4 and fixedly connected to the stirring shaft 4. The outer edge of the upper blade 51 is closely attached to the side wall of the mixing vessel 1. The elastic scraper 9 is fixed to the outer edge of the lower blade 52. This structure is designed because the existing stirring assembly 5 is difficult to clean the material on the side wall and bottom of the mixing vessel 1. The upper blade 51 is attached to the vessel wall to reduce the material retention on the side wall. The lower blade 52, together with the elastic scraper 9, can specifically handle the viscous material that is easy to adhere to at the bottom. The two work together to improve the mixing and cleaning effect of the mixing device on the material in different positions and reduce the mixing dead corners.

[0027] The lower blade 52 is arc-shaped, and the bottom of the mixing vessel 1 is provided with a rounded corner inclined part 11. The arc-shaped lower blade 52 is adapted to the arc of the rounded corner inclined part 11.

[0028] The rounded corner inclined part 11 of the mixing vessel 1 is a structure formed by the downward extension of the side wall of the vessel body and the transition with the bottom of the vessel. The curvature of the lower curved blade 52 is perfectly matched with the curvature of the rounded corner inclined part 11, ensuring that the gap between the two is uniform. This structure is designed because there is a large gap between the existing straight blade and the rounded corner of the bottom of the vessel, which easily leads to the accumulation of viscous materials. The curved design allows the lower blade 52 to be closer to the inner wall of the rounded corner inclined part 11, providing a stable installation base and fitting support for the elastic scraper 9, and reducing the space for material to stagnate at the transition.

[0029] The elastic scraper 9 is fixed to the lower blade 52 by bolts.

[0030] Bolts are inserted sequentially through the pre-set mounting holes of the elastic scraper 9 and the lower blade 52, and the two are tightly fixed together. This structure is designed to ensure that the elastic scraper 9 does not fall off or shift when rotating at high speed with the lower blade 52. The bolt connection method not only ensures the connection strength, but also makes it easy to replace the elastic scraper 9 separately after it wears out, without having to replace the entire mixing blade. This reduces the equipment maintenance cost and replacement difficulty, and extends the overall service life of the mixing assembly 5.

[0031] The bottom surface of the dustproof pad 8 is attached to the top surface of the vessel lid 2, and the top surface of the dustproof pad 8 is attached to the outer side wall of the bottom end of the feed inlet 6.

[0032] The upper and lower surfaces of the dustproof pad 8 are tightly fitted to the top surface of the vessel lid 2 and the outer wall of the bottom end of the feed inlet 6, respectively, forming a double-fit sealing structure. This structure is designed because even if the connection between the feed inlet 6 and the vessel lid 2 is welded, there may be tiny gaps. The dustproof pad 8 can completely fill these tiny gaps by fitting them on both sides, blocking the channels for dust to escape from the gaps. At the same time, the fitted state can prevent dust from accumulating on the joint surface, further enhancing the dustproof effect and ensuring that there is no dust leakage during the feeding process.

[0033] The bottom end of the guide bucket 7 extends into the interior of the mixing vessel 1, and the inner edge of the dustproof pad 8 is attached to the outer wall of the guide bucket 7.

[0034] The bottom of the guide hopper 7 extends beyond the connection between the feed inlet 6 and the lid 2, reaching above the stirring assembly 5 inside the mixing vessel 1. The inner edge of the dustproof pad 8 is in close contact with the outer wall of the guide hopper 7, forming a continuous blocking surface. This structure is designed to allow the raw materials to enter the mixing area directly through the guide hopper 7 after being fed from the feed inlet 6, avoiding the raw materials from staying at the connection. At the same time, the fit between the dustproof pad 8 and the guide hopper 7 can eliminate the gap between them, preventing dust from being adsorbed or escaped in the gap, thus achieving a seamless combination of flow guidance and dust prevention.

[0035] The side of the elastic scraper 9 away from the lower blade 52 is in contact with the rounded corner inclined part 11 at the bottom of the mixing vessel 1.

[0036] The free end of the elastic scraper 9 is in close contact with the inner wall of the rounded inclined portion 11 of the mixing vessel 1. It slides against the inner wall as the lower blade 52 rotates. This structure is designed because the rounded inclined portion 11 at the bottom of the mixing vessel 1 is prone to adhering viscous materials. The contact design of the elastic scraper 9 can directly scrape off the adhering materials on the inner wall during rotation, avoiding long-term residue and deterioration of materials. At the same time, the elastic material can adapt to slight assembly deviations and irregularities of the inner wall, ensuring that there are no dead corners in the scraping and ensuring that the purity of each batch of products is not affected by residual materials.

[0037] The surface of the elastic scraper 9 is provided with micro-guide grooves 10.

[0038] The micro-guide channel 10 is formed on one side surface of the elastic scraper 9 along the rotation direction of the scraper 9. This structure is designed to reduce the resistance of the material to the scraper when the elastic scraper 9 scrapes off the adhering material, so that the scraped material can flow smoothly through the micro-guide channel 10 to the stirring area in the center of the mixing vessel 1, avoiding the accumulation of material on the scraper surface and affecting the scraping effect. At the same time, the guide channel structure can reduce the energy consumption when the scraper rotates and ensure the stability of the stirring process.

[0039] In summary, the mixing device for indoxacarb production provided by this utility model embodiment works as follows: during operation, the lid 2 is first closed and fixed to the top of the mixing vessel 1 to ensure the device is sealed. Then, the drive motor 3 is started, and the output end of the drive motor 3 drives the stirring shaft 4 to rotate synchronously, thereby driving the upper blade 51 and the lower blade 52 of the stirring assembly 5 to rotate inside the mixing vessel 1. During the feeding process, the fine powder raw material and liquid raw material for indoxacarb production are fed in through the feed inlet 6. The funnel-shaped guide bucket 7 inside the feed inlet 6 guides the material flow to the stirring area inside the mixing vessel 1, preventing the material flow from drifting to the connection between the feed inlet 6 and the vessel cover 2. At the same time, the annular dustproof pad 8 on the top surface of the vessel cover 2 is in double-sided contact with the outer wall of the bottom end of the feed inlet 6 and the top surface of the vessel cover 2, and the inner edge is in contact with the outer wall of the guide bucket 7, which completely seals the fine gaps and rough welds at the connection, preventing dust from escaping or accumulating. During the mixing stage, the upper blade 51 rotates against the side wall of the mixing vessel 1 to reduce the retention of raw materials at the side wall. The lower blade 52 is adapted to the curvature of the rounded corner inclined part 11 at the bottom of the mixing vessel 1, which drives the elastic scraper 9 on the edge to slide against the inner wall of the rounded corner inclined part 11 in real time to scrape off the viscous material that is adhering. The scraped material flows smoothly to the center of the vessel through the micro-guide groove 10 on the surface of the elastic scraper 9, and is fully mixed with other raw materials to avoid mixing dead corners.

[0040] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A mixing device for indoxacarb production, comprising a mixing vessel (1), a vessel lid (2), a drive motor (3), a stirring shaft (4), a stirring assembly (5), and a feed inlet (6), wherein the vessel lid (2) covers the top of the mixing vessel (1), the drive motor (3) is fixedly installed on the top surface of the vessel lid (2), one end of the stirring shaft (4) is connected to the output end of the drive motor (3), and the other end extends through the vessel lid (2) into the interior of the mixing vessel (1) and is connected to the stirring assembly (5), and the feed inlet (6) is located on one side of the top of the vessel lid (2) and communicates with the interior of the mixing vessel (1), characterized in that: The feed inlet (6) is provided with a guide bucket (7) inside, and a dustproof pad (8) is provided at the connection between the feed inlet (6) and the lid (2).

2. The mixing device for indoxacarb production according to claim 1, characterized in that: The guide bucket (7) is funnel-shaped and is integrally formed with the feed inlet (6).

3. The mixing device for indoxacarb production according to claim 1, characterized in that: The dustproof pad (8) is a ring structure and is detachably connected to the top surface of the lid (2) by bolts.

4. The mixing device for indoxacarb production according to claim 1, characterized in that: The stirring assembly (5) includes an upper blade (51) and a lower blade (52). The upper blade (51) is attached to the inner wall of the mixing vessel (1); The lower blade (52) is provided with an elastic scraper (9) at its edge.

5. A mixing device for indoxacarb production according to claim 4, characterized in that: The lower blade (52) is arc-shaped, and the bottom of the mixing vessel (1) is provided with a rounded corner inclined part (11). The arc-shaped lower blade (52) and the rounded corner inclined part (11) are adapted to each other.

6. The mixing device for indoxacarb production according to claim 4, characterized in that: The elastic scraper (9) is fixed to the lower blade (52) by bolts.

7. A mixing device for indoxacarb production according to claim 1, characterized in that: The bottom surface of the dustproof pad (8) is attached to the top surface of the kettle lid (2), and the top surface of the dustproof pad (8) is attached to the outer side wall of the bottom end of the feed inlet (6).

8. A mixing device for indoxacarb production according to claim 1, characterized in that: The bottom end of the guide bucket (7) extends into the interior of the mixing vessel (1), and the inner edge of the dustproof pad (8) is attached to the outer wall of the guide bucket (7).

9. A mixing device for indoxacarb production according to claim 4, characterized in that: The side of the elastic scraper (9) away from the lower blade (52) is in contact with the bottom rounded corner inclined part (11) of the mixing vessel (1).

10. A mixing device for indoxacarb production according to claim 4, characterized in that: The surface of the elastic scraper (9) is provided with micro-guide grooves (10).

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