Desolventizing kettle for imidacloprid production

By installing a cleaning box and auxiliary devices in the desolvation kettle, the problem of foam occupying space was solved, achieving efficient foam removal and improving equipment efficiency and safety.

CN224220813UActive Publication Date: 2026-05-12SUQIAN HAIDE PHARMACEUTICAL CHEMICAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SUQIAN HAIDE PHARMACEUTICAL CHEMICAL CO LTD
Filing Date
2025-05-12
Publication Date
2026-05-12

AI Technical Summary

Technical Problem

During use, foam formation caused by heating and stirring in the desolventizing kettle occupies equipment space, affects efficiency, and may lead to material loss and environmental pollution.

Method used

A cleaning box is installed on the surface of the mixing rack. The inner wall of the cleaning box is equipped with drainage holes. The cleaning box is rotated by the mixing rack to collect foam. The cleaning box is kept flush with the liquid surface by slide rails, pulleys and floats. The rotating plate and rollers are used to reduce friction and achieve efficient foam removal.

Benefits of technology

It effectively improves the defoaming effect of the desolventizing kettle, avoids foam from affecting equipment efficiency and safety, and ensures the integrity of materials and environmental protection.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the field of imidacloprid production, and discloses a desolventizing kettle for imidacloprid production, the desolventizing kettle comprises a desolventizing kettle body and two sliding rails, a motor is fixedly installed at the top of the desolventizing kettle body, the output end of the motor is fixedly connected with a stirring frame, the surface of the stirring frame is rotatably connected with the inner wall of the desolventizing kettle body, and the two sliding rails are fixedly connected with the stirring frame. An adjusting block is slidably mounted on the surface of the sliding rail, one end of the adjusting block is fixedly connected with a cleaning box, a plurality of drainage holes are formed in the inner wall of the cleaning box, and the center of the motor and the center of the stirring frame are located on the same straight line; according to the desolventizing kettle, the cleaning box is mounted on the surface of the stirring frame by virtue of the sliding rail and the adjusting block, and a plurality of drainage holes are formed in the inner wall of the cleaning box, so that the cleaning box is driven to rotate in the desolventizing kettle body by virtue of the stirring frame, and foams on the surface of a processing material in the desolventizing kettle body are collected and removed; the solvent entering the cleaning box is discharged from the drain hole, so that the influence on the use effect of the desolventizing kettle due to excessive foam is avoided.
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Description

Technical Field

[0001] This application relates to the field of imidacloprid production, and in particular to a solvent extraction vessel for imidacloprid production. Background Technology

[0002] Imidacloprid is a nitromethylene systemic insecticide belonging to the chloronicotinamide class. It paralyzes and kills pests by interfering with their central nervous system transmission. It is widely used in crops such as rice, wheat, cotton, vegetables, and fruit trees, and can be applied through spraying, seed treatment, and soil treatment. Imidacloprid production often utilizes a solvent removal vessel. A conventional solvent removal vessel is a device used to remove solvents from materials and is widely used in chemical, pharmaceutical, and food industries. Its main function is to separate the solvent from the solid by evaporating the solvent in the material through heating. A solvent removal vessel typically consists of a closed container with an internal stirring device and heating system. After the material is added to the vessel, the solvent gradually evaporates due to stirring and heating. The evaporated vapor is collected and treated through a condensation system, thus achieving the separation of the solvent from the solid. In the use of a conventional solvent removal vessel, the material is loaded into the vessel body, and the vessel body heats the material to separate the solvent. A motor is installed on the top of the vessel body, and a stirring rack is installed at the output end of the motor. After the motor is started, the material inside the vessel body is stirred.

[0003] Regarding the aforementioned technologies, the inventors believe that during the use of the desulfurization reactor, due to the influence of heating, pressure, and stirring, the processed material inside the desulfurization reactor is prone to foam formation caused by the gas-liquid two-phase flow of the reactants. Excessive foam occupies the space of the equipment, thereby reducing the effective volume of the equipment, affecting the efficiency of the desulfurization reaction, and the foam may overflow the equipment, causing material loss and environmental pollution, and even posing safety hazards.

[0004] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Utility Model Content

[0005] To address the problem of excessive foam generation during the use of the desolventizing kettle, this application provides a desolventizing kettle for imidacloprid production.

[0006] The present application provides a solvent extraction reactor for imidacloprid production, which adopts the following technical solution:

[0007] A desolvation kettle for imidacloprid production includes a desolvation kettle body and two slide rails. A motor is fixedly installed on the top of the desolvation kettle body, and a stirring frame is fixedly connected to the output end of the motor. The surface of the stirring frame is rotatably connected to the inner wall of the desolvation kettle body. An adjusting block is slidably installed on the surface of the slide rails, and a cleaning box is fixedly connected to one end of the adjusting block. Several drainage holes are opened on the inner wall of the cleaning box. The center of the motor and the center of the stirring frame are on the same straight line. One side of the slide rail is fixedly installed to the surface of the stirring frame. Several drainage holes are evenly distributed on the inner wall of the cleaning box.

[0008] Preferably, the two slide rails are symmetrically distributed about the stirring rack, and the dimensions of the slide rail surfaces are compatible with the dimensions of the inner wall of the adjusting block. The inner wall of the adjusting block is rotatably equipped with several pulleys, which are divided into two groups. The two groups of pulleys are symmetrically distributed about the adjusting block, and the surfaces of the pulleys are slidably connected to the surfaces of the slide rails.

[0009] Preferably, two floats are fixedly installed on the inner wall of the cleaning box. The floats are sponge rods, and the two floats are symmetrically distributed about the cleaning box axis.

[0010] Preferably, the inner wall of the cleaning box is fitted with a fixing bolt, the surface of the fixing bolt is threaded to the inner wall of the adjusting block, and a number of auxiliary plates are fixedly connected to the inner wall of the cleaning box, and the number of auxiliary plates are evenly distributed on the inner wall of the cleaning box.

[0011] Preferably, a connecting frame is fixedly installed at one end of the cleaning box, and a rotating plate is rotatably connected to the surface of the connecting frame. One end of the rotating plate is slidably installed against the inner wall of the desolventizing vessel.

[0012] Preferably, a spring is fixedly installed at one end of the rotating plate, one end of the spring is fixedly connected to the inner wall of the connecting frame, and a control frame is fixedly installed at the top of the rotating plate.

[0013] Preferably, the inner wall of the rotating plate is rotatably connected to a roller, and the surface of the roller is slidably installed with the inner wall of the desolventizing vessel.

[0014] In summary, this application includes the following beneficial technical effects:

[0015] 1. A cleaning box is installed on the surface of the stirring rack via a slide rail and adjusting block. Several drainage holes are provided on the inner wall of the cleaning box to facilitate rotation within the desolventizing vessel, collected, and removed from the surface of the processed material. The slide rail is mounted on the stirring rack and slidably connected to the inner wall of the adjusting block. A pulley is installed at one end of the adjusting block to allow for easy height adjustment of the cleaning box. Two sponge floats are installed on the inner wall of the cleaning box to keep it level with the liquid. Fixing bolts are secured to the inner wall of the cleaning box, and several auxiliary plates are installed to shield larger impurities. Compared to existing technologies, this method effectively improves the defoaming effect of the desolventizing vessel.

[0016] 2. A connecting frame can also be installed at one end of the cleaning box. The rotating plate on the surface of the connecting frame is slidably connected to the body of the desolventizing vessel, so that the foam in the desolventizing vessel body can be sent into the cleaning box by means of the rotating plate. A spring is installed at one end of the rotating plate, and a control frame is installed on the surface of the rotating plate, so that the rotating plate can be kept in contact with the inner wall of the desolventizing vessel body by means of the spring. Rollers are rotatably connected to the inner wall of the rotating plate, so that the friction between the rotating plate and the desolventizing vessel body can be reduced by means of the rollers, thus effectively improving the use effect of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a desolvation vessel used for imidacloprid production according to an embodiment of the application;

[0018] Figure 2 This is a schematic diagram of the slide rail structure in an embodiment of the application;

[0019] Figure 3 This is a side view of the embodiment of the application.

[0020] Figure 4 This is a schematic diagram of the structure at point A in the embodiment of the application.

[0021] Explanation of reference numerals in the attached drawings: 1. Desolvation vessel body; 2. Motor; 3. Stirring frame; 4. Slide rail; 5. Adjusting block; 6. Cleaning box; 7. Drain hole; 8. Float rod; 9. Pulley; 10. Auxiliary plate; 11. Fixing bolt; 12. Connecting frame; 13. Rotating plate; 14. Spring; 15. Roller; 16. Control frame. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1 —4. This application will be described in further detail.

[0023] This application discloses a solvent extraction vessel for imidacloprid production, referring to... Figure 1 - Figure 2The system includes a desolventizing vessel body 1. During use, after loading the processing material into the desolventizing vessel body 1, the desolventizing vessel body 1 heats the processing material to separate the solvent within it. A motor 2 is installed on the top of the desolventizing vessel body 1, and a stirring rack 3 is installed at the output end of the motor 2. After the motor 2 is started, it stirs the processing material inside the desolventizing vessel body 1. A cleaning box 6 is installed on the surface of the stirring rack 3 via a slide rail 4 and an adjusting block 5. Several drainage holes 7 are opened on the inner wall of the cleaning box 6. The stirring rack 3 drives the cleaning box 6 to rotate inside the desolventizing vessel body 1, thereby collecting and removing the foam on the surface of the processing material inside the desolventizing vessel body 1. The solvent entering the cleaning box 6 is discharged from the drainage holes 7, which effectively improves the defoaming effect of the desolventizing vessel and avoids excessive foam from affecting the use effect of the desolventizing vessel.

[0024] Reference Figure 2 The slide rail 4 is installed on the surface of the mixing frame 3. The surface of the slide rail 4 is slidably connected to the inner wall of the adjusting block 5. A pulley 9 is installed at one end of the adjusting block 5. The pulley 9 reduces the friction between the adjusting block 5 and the slide rail 4. The height of the cleaning box 6 can be easily adjusted with the help of the slide rail 4 and the adjusting block 5, so as to ensure that the cleaning box 6 removes foam from the processed materials at different liquid levels. Two sponge floats 8 are installed on the inner wall of the cleaning box 6. The floats 8 keep the cleaning box 6 flush with the liquid, so as to maintain the foam removal effect of the cleaning box 6. The inner wall of the cleaning box 6 is clamped with a fixing bolt 11. One end of the fixing bolt 11 is connected to the inside of the adjusting block 5. Several auxiliary plates 10 are installed on the inner wall of the cleaning box 6. The auxiliary plates 10 can easily block larger impurities, so as to avoid the drain hole 7 being blocked by larger impurities. The fixing bolt 11 can be used to remove the cleaning box 6 from the surface of the adjusting block 5, so as to facilitate cleaning or replacement of the cleaning box 6.

[0025] Reference Figure 3 - Figure 4 A connecting frame 12 is installed at one end of the cleaning box 6. The rotating plate 13 on the surface of the connecting frame 12 is slidably connected to the inside of the desolventizing vessel body 1. The rotating plate 13 blocks the connection between the cleaning box 6 and the desolventizing vessel body 1, thereby sending the foam in the desolventizing vessel body 1 into the cleaning box 6 to ensure the effective collection of foam by the cleaning box 6. A spring 14 is installed at one end of the rotating plate 13, and one end of the spring 14 is connected to the inner wall of the connecting frame 12. A control frame 16 is installed on the surface of the rotating plate 13. The spring 14 pushes the rotating plate 13 to keep the rotating plate 13 in contact with the inner wall of the desolventizing vessel body 1. The control frame 16 is rotated to facilitate the removal of the cleaning box 6 from the desolventizing vessel body 1. A roller 15 is rotatably connected to the inner wall of the rotating plate 13. The surface of the roller 15 is slidably installed with the inner wall of the desolventizing vessel body 1. The roller 15 reduces the friction between the rotating plate 13 and the desolventizing vessel body 1, avoiding noise caused by friction between the rotating plate 13 and the desolventizing vessel body 1.

[0026] The implementation principle of a solvent removal vessel for imidacloprid production according to an embodiment of this application is as follows: A cleaning box 6 is installed on the surface of the stirring frame 3 via a slide rail 4 and an adjusting block 5. Several drainage holes 7 are provided on the inner wall of the cleaning box 6, allowing the cleaning box 6 to rotate within the solvent removal vessel body 1 via the stirring frame 3. This collects and removes foam from the surface of the processed material within the solvent removal vessel body 1. The solvent entering the cleaning box 6 is discharged through the drainage holes 7, thus preventing excessive foam from affecting the performance of the solvent removal vessel. The slide rail 4 is installed on the surface of the stirring frame 3, and its surface is slidably connected to the inner wall of the adjusting block 5. A pulley 9 is installed at one end of the adjusting block 5, reducing the friction between the adjusting block 5 and the slide rail 4, thus facilitating the rotation of the cleaning box 6 within the solvent removal vessel body 1 via the stirring frame 3. The height of the cleaning box 6 can be easily adjusted with the adjusting block 5 to ensure that the cleaning box 6 removes foam from the processed materials at different liquid levels. Two sponge floats 8 are installed on the inner wall of the cleaning box 6 to keep the cleaning box 6 flush with the liquid, thereby maintaining the foam removal effect of the cleaning box 6. The inner wall of the cleaning box 6 is secured with fixing bolts 11, one end of which is connected to the adjusting block 5. Several auxiliary plates 10 are installed on the inner wall of the cleaning box 6 to facilitate the blocking of larger impurities, preventing the drain hole 7 from being blocked by larger impurities. The fixing bolts 11 can also be used to remove the cleaning box 6 from the surface of the adjusting block 5 for easy cleaning or replacement of the cleaning box 6.

[0027] A connecting frame 12 can also be installed at one end of the cleaning box 6. The rotating plate 13 on the surface of the connecting frame 12 is slidably connected to the inside of the desolventizing vessel body 1. This allows the rotating plate 13 to block the connection between the cleaning box 6 and the desolventizing vessel body 1, thereby sending the foam in the desolventizing vessel body 1 into the cleaning box 6 to ensure the effective collection of foam by the cleaning box 6. A spring 14 is installed at one end of the rotating plate 13, and one end of the spring 14 is connected to the inner wall of the connecting frame 12. A control frame 16 is installed on the surface of the rotating plate 13, so that the rotating plate 13 can be pushed by the spring 14 to keep the rotating plate 13 in contact with the inner wall of the desolventizing vessel body 1. The control frame 16 can be rotated to facilitate the removal of the cleaning box 6 from the desolventizing vessel body 1. A roller 15 is rotatably connected to the inner wall of the rotating plate 13. The surface of the roller 15 is slidably installed with the inner wall of the desolventizing vessel body 1 to reduce the friction between the rotating plate 13 and the desolventizing vessel body 1, thus avoiding noise caused by friction between the rotating plate 13 and the desolventizing vessel body 1.

[0028] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A desolvation vessel for imidacloprid production, comprising a desolvation vessel body (1) and two slide rails (4), characterized in that: A motor (2) is fixedly installed on the top of the desolventizing vessel body (1). A stirring rack (3) is fixedly connected to the output end of the motor (2). The surface of the stirring rack (3) is rotatably connected to the inner wall of the desolventizing vessel body (1). An adjusting block (5) is slidably installed on the surface of the slide rail (4). A cleaning box (6) is fixedly connected to one end of the adjusting block (5). Several drainage holes (7) are opened on the inner wall of the cleaning box (6).

2. The solvent removal reactor for imidacloprid production according to claim 1, characterized in that: The center of the motor (2) and the center of the stirring rack (3) are on the same straight line. One side of the slide rail (4) is fixedly installed on the surface of the stirring rack (3). Several drainage holes (7) are evenly distributed on the inner wall of the cleaning box (6).

3. The solvent extraction vessel for imidacloprid production according to claim 1, characterized in that: The two slide rails (4) are symmetrically distributed about the stirring rack (3), and the dimensions of the slide rail (4) are compatible with the dimensions of the inner wall of the adjusting block (5). The inner wall of the adjusting block (5) is rotatably equipped with several pulleys (9). The several pulleys (9) are divided into two groups. The two groups of pulleys (9) are symmetrically distributed about the adjusting block (5), and the surfaces of the pulleys (9) are slidably connected to the surfaces of the slide rails (4).

4. The solvent removal reactor for imidacloprid production according to claim 1, characterized in that: Two floats (8) are fixedly installed on the inner wall of the cleaning box (6). The floats (8) are sponge rods, and the two floats (8) are symmetrically distributed about the cleaning box (6).

5. The solvent extraction vessel for imidacloprid production according to claim 1, characterized in that: The inner wall of the cleaning box (6) is fitted with a fixing bolt (11), the surface of the fixing bolt (11) is threaded onto the inner wall of the adjusting block (5), and a number of auxiliary plates (10) are fixedly connected to the inner wall of the cleaning box (6), and the number of auxiliary plates (10) are evenly distributed on the inner wall of the cleaning box (6).

6. The solvent extraction vessel for imidacloprid production according to claim 1, characterized in that: A connecting frame (12) is fixedly installed at one end of the cleaning box (6), and a rotating plate (13) is rotatably connected to the surface of the connecting frame (12). One end of the rotating plate (13) is slidably installed on the inner wall of the desolvation kettle body (1).

7. The solvent removal reactor for imidacloprid production according to claim 6, characterized in that: A spring (14) is fixedly installed at one end of the rotating plate (13), and one end of the spring (14) is fixedly connected to the inner wall of the connecting frame (12). A control frame (16) is fixedly installed on the top of the rotating plate (13).

8. The solvent extraction vessel for imidacloprid production according to claim 6, characterized in that: The inner wall of the rotating plate (13) is rotatably connected to a roller (15), and the surface of the roller (15) is slidably installed with the inner wall of the desolventizing vessel body (1).