Flash dryer for pesticide precursor production

Abstract

The utility model discloses a flash dryer for producing a pesticide precursor, which relates to the field of pesticide production and comprises a base, a collecting box arranged on one side in the base, a processing tank arranged at the top end of the base, a cooling tank arranged on one side of the processing tank through a discharge pipe, and a precursor processing component arranged on one side of the processing tank and one side of the cooling tank. A precursor smashing assembly is arranged in the base, a screen is arranged on one side of the precursor smashing assembly, and a processing assembly is arranged on one side of the screen. According to the utility model, the precursor processing component is arranged, so that the vortex tube can be utilized to generate high-temperature airflow and low-temperature airflow, the high-temperature airflow can quickly dry sulfonamide, and the low-temperature airflow can cool the dried sulfonamide, so that the cleanliness and the stability of the sulfonamide can be ensured, and the sulfonamide degradation caused by overhigh temperature is avoided; the quality of sulfonamide as a pesticide precursor is influenced.

Description

Technical Field

[0001] This utility model relates to the field of pesticide production, specifically to a flash dryer for the production of pesticide precursors. Background Technology

[0002] Pesticide precursors are intermediates or starting materials used in the pesticide synthesis process to prepare the final active ingredient of the pesticide. They are usually compounds that are similar in chemical structure to the final active ingredient of the pesticide, but have lower or no activity. Because sulfonamides have good biological activity, they are often used in the pesticide production process.

[0003] Sulfonamides are a class of organic compounds containing a sulfonyl group (-SO2-). They are amide derivatives of sulfonic acids. In the synthesis of pesticides, sulfonamide compounds are usually used as precursors to convert sulfonamides into the final active pesticide ingredients through chemical reactions. At the same time, in order to ensure the quality of pesticide products in the later stages, flash dryers are usually used to quickly convert liquid or paste-like sulfonamides into solids, and then dry and sieve them to ensure the quality and speed of subsequent pesticide production processes.

[0004] However, existing flash dryers lack cooling processes for sulfonamides after drying, which can lead to excessively high temperatures and sulfonamide deterioration. Furthermore, during the sieving process after drying, it is difficult to treat the surface of the screen, which can cause the screen to become clogged after prolonged use, reducing the flowability of sulfonamides and affecting their quality as pesticide precursors.

[0005] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] To address the shortcomings of existing technologies, this utility model provides a flash dryer for the production of pesticide precursors, which can remove sulfonamides from the bottom of the screen by periodically beating it, thereby increasing the flowability of sulfonamides during processing and solving the problem of inconvenient surface treatment of the screen.

[0008] (II) Technical Solution

[0009] To achieve the aforementioned goal of removing sulfonamide from the bottom of the screen by periodically pounding it, thereby increasing the flowability of sulfonamide during processing, the specific technical solution adopted by this utility model is as follows:

[0010] A flash dryer for producing pesticide precursors includes a base, a collection box on one side inside the base, a processing tank on the top of the base, a cooling tank on one side of the processing tank via a discharge pipe, a precursor processing component on one side of the processing tank and the cooling tank, a precursor crushing component inside the base, a screen on one side of the precursor crushing component, and a processing component on one side of the screen.

[0011] Furthermore, in order to utilize the vortex tube to generate high-temperature and low-temperature airflows, the high-temperature airflow can quickly dry the sulfonamide, while the low-temperature airflow can cool the dried sulfonamide, thereby ensuring the cleanliness and stability of the sulfonamide and preventing excessively high temperatures from causing sulfonamide deterioration and affecting the quality of the pesticide. Several sets of compression springs are provided at the bottom of the screen, and a connecting plate is provided at the bottom of the compression springs. The precursor treatment component includes a placement rack installed on one side of the treatment tank and the cooling tank. An air compressor is provided at the top of the placement rack. An air inlet pipe is provided on one side of the air compressor. A vortex tube is provided on one side of the air inlet pipe. Heat transfer pipes and cold transfer pipes are provided on both sides of the vortex tube, respectively.

[0012] Furthermore, in order to pulverize the sulfonamide containing moisture into powder under the action of the pulverizing blades, and to accelerate the drying and cooling process and shorten the running time, the sulfonamide adhering to the inside of the processing tank can be scraped off by the action of the wall scraper. This prevents the corrosive solvent contained in the sulfonamide from corroding the processing tank under long-term use. The precursor pulverizing component includes a rotating shaft installed inside the processing tank. A servo motor is installed at the bottom end of the rotating shaft and through the processing tank. Several sets of connecting blocks are installed on the outside of the rotating shaft. Several sets of pulverizing blades are installed on the outside of the connecting blocks. A transition block is installed on the outside of the rotating shaft. Several sets of wall scraper are installed on the outside of the transition block.

[0013] Furthermore, in order to remove sulfonamide from the bottom of the screen by periodically hammering it, increase the flowability of sulfonamide during processing, avoid screen blockage, and ensure that sulfonamide can pass through the screen smoothly, thereby maintaining screening efficiency, the processing component includes a mounting box installed on the top of the processing tank. A support frame is provided at the bottom of the mounting box. A servo motor is installed inside the mounting box. A gear is installed through the output shaft of the servo motor and through the mounting box. Gears 1 are symmetrically arranged on both sides of gear 1, meshing with it. A turntable is installed through the support frame on one side of gear 2. A sliding frame is installed on the outside of the turntable, and one end of the sliding frame is connected to the support frame. A hammer is installed at the bottom of the sliding frame. A sliding cavity is opened inside the support frame.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a flash dryer for the production of pesticide precursors, which has the following beneficial effects:

[0016] (1) This utility model has a simple structure and is easy to operate. By setting the precursor crushing component, the sulfonamide containing water can be crushed into powder under the action of the crushing blade. It can speed up the drying and cooling process and shorten the running time. Under the action of the scraper, the sulfonamide stuck inside the treatment tank can be scraped off, avoiding the corrosion of the treatment tank by the corrosive solvent contained in the sulfonamide under long-term use.

[0017] (2) By setting a precursor treatment component, this utility model can use vortex tubes to generate high-temperature airflow and low-temperature airflow. The high-temperature airflow can quickly dry sulfonamide, and the low-temperature airflow can cool the dried sulfonamide, thereby ensuring the cleanliness and stability of sulfonamide and avoiding excessively high temperatures that could cause sulfonamide to deteriorate and affect the quality of sulfonamide as a pesticide precursor.

[0018] (3) By setting up a processing component, the sulfonamide at the bottom of the screen can be removed by periodically hammering the screen, which increases the flowability of sulfonamide during processing, avoids screen blockage, ensures that sulfonamide can pass through the screen smoothly, and thus maintains the efficiency of screening. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a flash dryer for producing pesticide precursors according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the flash dryer for pesticide precursor production according to an embodiment of the present invention from another angle;

[0022] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0023] Figure 4 This is a cross-sectional view of a flash dryer for producing pesticide precursors according to an embodiment of the present invention;

[0024] Figure 5 yes Figure 4 A magnified view of a section at point B in the middle;

[0025] Figure 6 This is a partial structural schematic diagram of the processing components in a flash dryer for pesticide precursor production according to an embodiment of the present invention;

[0026] Figure 7 This is a cross-sectional view of the cooling tank in a flash dryer for producing pesticide precursors according to an embodiment of the present invention.

[0027] In the picture:

[0028] 1. Base; 2. Collection box; 3. Processing tank; 4. Discharge pipe; 5. Cooling tank; 6. Precursor processing assembly; 601. Placement rack; 602. Air compressor; 603. Air inlet pipe; 604. Vortex tube; 605. Heat transfer pipe; 606. Cold transfer pipe; 7. Precursor crushing assembly; 701. Rotating shaft; 702. Servo motor one; 703. Connecting block; 704. Crushing blade; 705. Adapter block; 706. Scraper; 8. Screen; 9. Processing assembly; 901. Mounting box; 902. Support frame; 903. Servo motor two; 904. Gear one; 905. Gear two; 906. Sliding frame; 907. Hammer; 908. Sliding cavity; 909. Turntable; 10. Compression spring; 11. Connecting plate. Detailed Implementation

[0029] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0030] According to an embodiment of the present invention, a flash dryer for the production of pesticide precursors is provided.

[0031] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figures 1-7 As shown, the flash dryer for pesticide precursor production according to an embodiment of the present invention includes a base 1, a collection box 2 is provided on one side of the interior of the base 1, a processing tank 3 is provided on the top of the base 1, a cooling tank 5 is provided on one side of the processing tank 3 through a discharge pipe 4, a precursor processing component 6 is provided on one side of the processing tank 3 and the cooling tank 5, a precursor crushing component 7 is provided inside the base 1, a screen 8 is provided on one side of the precursor crushing component 7, and a processing component 9 is provided on one side of the screen 8.

[0032] In one embodiment, for the screen 8, a plurality of compression springs 10 are provided at the bottom end of the screen 8, and a connecting plate 11 is provided at the bottom end of the compression springs 10; the precursor treatment assembly 6 includes a placement rack 601 installed on one side of the treatment tank 3 and the cooling tank 5, an air compressor 602 is provided at the top of the placement rack 601, an air inlet pipe 603 is provided on one side of the air compressor 602, a vortex pipe 604 is provided on one side of the air inlet pipe 603, and a heat transfer pipe 605 and a cold transfer pipe 606 are respectively provided on both sides of the vortex pipe 604, so that the vortex pipe 604 can generate high-temperature airflow and low-temperature airflow. The high-temperature airflow can quickly dry the sulfonamide, and the low-temperature airflow can cool the dried sulfonamide, thereby ensuring the cleanliness and stability of the sulfonamide and avoiding the deterioration of the sulfonamide due to excessively high temperature, which would affect the quality of the pesticide.

[0033] It should be explained that the specific working principle of the precursor treatment component 6 is as follows: The air compressor 602 sends compressed air through the intake pipe 603 to the vortex tube 604 (the vortex tube 604 is a very simple energy separation device, which consists of a nozzle, a vortex chamber, a separation orifice plate, and hot and cold end pipes, which can be referred to in the prior art and will not be specifically described in this device). During operation, the compressed gas expands in the nozzle using the Maxwell's demon principle, and then enters the vortex tube 604 at a high speed along the tangential direction. When the airflow rotates at high speed in the vortex tube 604, it is separated into two airflows with different total temperatures after being transformed by the vortex tube 604. The airflow in the central part has a lower temperature, while the airflow in the outer part has a higher temperature. By adjusting the ratio of hot and cold airflows, the optimal cooling or heating effect can be obtained. Then, the hot air is discharged through the heat transfer pipe 605, and the cold air is discharged through the cold transfer pipe 606. The hot air is used to heat and dry the sulfonamide containing moisture in the treatment tank 3, and the cold air is used to cool the dried sulfonamide in the cooling tank 5.

[0034] In one embodiment, the precursor pulverizing assembly 7 includes a rotating shaft 701 installed inside the processing tank 3. A servo motor 702 is installed at the bottom end of the rotating shaft 701 and through the processing tank 3. Several sets of connecting blocks 703 are installed on the outside of the rotating shaft 701, and several sets of pulverizing blades 704 are installed on the outside of the connecting blocks 703. A transition block 705 is installed on the outside of the rotating shaft 701, and several sets of scraper plates 706 are installed on the outside of the transition block 705. This allows the sulfonamide containing moisture to be pulverized into powder under the action of the pulverizing blades 704. This speeds up the drying and cooling process and shortens the running time. Under the action of the scraper plates 706, the sulfonamide adhering to the inside of the processing tank 3 can be scraped off, preventing the corrosive solvent contained in the sulfonamide from corroding the processing tank 3 during long-term use.

[0035] The working principle of the precursor crushing component 7 is as follows: the servo motor 702 is started by the external controller, so that the connecting block 703 and the transfer block 705 on the outside of the rotating shaft 701 are driven to rotate under the action of the servo motor 702. During the rotation, several sets of crushing blades 704 are used to crush the sulfonamide that enters the processing tank 3. At the same time, it is combined with the precursor processing component 6 to dry and cool the crushed sulfonamide.

[0036] In one embodiment, the processing component 9 includes a mounting box 901 mounted on the top of the processing tank 3. A support frame 902 is provided at the bottom of the mounting box 901. A second servo motor 903 is installed inside the mounting box 901. A gear 904 is provided through the output shaft of the second servo motor 903 and extends through the mounting box 901. Gears 905 meshing with the first gear 904 are symmetrically arranged on both sides of the first gear 904. A turntable 909 is provided on one side of the second gear 905, passing through the support frame 902. A sliding frame 906 is provided on the outer side of the turntable 909, and one end of the sliding frame 906 is connected to the support frame 902. A hammer 907 is provided at the bottom; a sliding cavity 908 is provided inside the support frame 902. Specifically, in order to ensure the normal use of the processing component 9, the mounting box 901 can protect the processing component 9. The top of the mounting box 901 is a circular structure to protect the servo motor 903, and the bottom is a square structure. The bottom of the square structure is provided with a through hole that matches the hammer 907, and a sealing ring is provided between the through hole and the hammer 907. This allows the sulfonamide at the bottom of the screen 8 to be removed by periodically hammering it, thereby increasing the flow of sulfonamide during processing, avoiding the clogging of the screen 8, ensuring that the sulfonamide can pass through the screen 8 smoothly, and thus maintaining the screening efficiency.

[0037] The working principle of the processing component 9 is as follows: the servo motor 903 is started by the external controller, and the gear 904 is driven to rotate under the action of the servo motor 903. During the rotation, the two sets of gears 905 are driven to rotate. The gears 905 drive the round rod at the turntable 909 to slide in the cavity at the top of the sliding frame 906. During the sliding process, the sliding frame 906 can move up and down inside the sliding cavity 908, so that the hammer 907 can perform alternating up and down hammering operation. The sulfonamide at the bottom of the screen 8 can be removed by periodically hammering it.

[0038] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0039] In practical applications, sulfonamide containing moisture is placed inside the processing tank 3 as a precursor for pesticide production. After placement, the precursor pulverizing component 7 is activated to pulverize the sulfonamide into fine powder. Simultaneously, the precursor processing component 6 is activated during the pulverizing process, using the air compressor 602 and the vortex tube 604 to generate hot and cold air. The hot and cold air are introduced into the outer shell of the processing tank 3 and the cooling tank 5 through the heat transfer pipe 605 and the cold transfer pipe 606, respectively. After the hot air enters the processing tank 3, the airflow generated by the hot air dries the sulfonamide powder inside. During the drying process, the sulfonamide floats upward under the action of the hot air, allowing the sulfonamide powder that meets the size requirements to pass through the screen 8 and enter the upper part of the processing tank 3, while the powder that does not meet the requirements continues to remain at the bottom of the processing tank 3 for secondary pulverization.

[0040] The sulfonamide powder entering the top of the processing tank 3 can enter the cooling tank 5 under the action of the discharge pipe 4 and the pump. The cooling tank 5 is cooled by the cold air at the outer shell to avoid affecting the activity of the sulfonamide due to prolonged high temperature. After cooling, the opening at the bottom of the cooling tank 5 is opened to collect the processed sulfonamide into the collection box 2. The cold air is discharged through the air outlet at the outer shell of the cooling tank 5, and the hot air that enters the cooling tank 5 with the discharge pipe 4 and the pump is discharged through the discharge pipe at the bottom of the cooling tank 5. A filter screen is installed at the discharge pipe to prevent the sulfonamide from being discharged. In addition, to prevent the sulfonamide powder from clogging the screen 8, the top of the screen 8 can be hammered periodically by the processing component 9 after a period of use to hammer the sulfonamide particles stuck at the screen 8 into the bottom of the processing tank 3, thereby ensuring the efficiency of sulfonamide processing.

[0041] In summary, with the help of the above-mentioned technical solutions of this utility model, the present utility model has a simple structure and is easy to operate. By setting the precursor crushing component 7, the sulfonamide containing moisture can be crushed into powder under the action of the crushing blade 704, which can accelerate the drying and cooling process and shorten the running time. Under the action of the scraper plate 706, the sulfonamide adhering to the inside of the treatment tank 3 can be scraped off, avoiding the corrosion of the treatment tank 3 by the corrosive solvent contained in the sulfonamide during long-term use. By setting the precursor treatment component 6, this utility model can use the vortex tube 604 to generate high-temperature airflow and low-temperature airflow. The high-temperature airflow can quickly dry the sulfonamide, and the low-temperature airflow can cool the dried sulfonamide, thereby ensuring the cleanliness and stability of the sulfonamide and avoiding the deterioration of the sulfonamide due to excessively high temperature, which would affect the quality of the pesticide. By setting the treatment component 9, this utility model can remove the sulfonamide at the bottom of the screen 8 by periodically hammering it, increasing the flow of sulfonamide during processing, avoiding the clogging of the screen 8, ensuring that the sulfonamide can pass through the screen 8 smoothly, and thus maintaining the screening efficiency.

[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection 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 utility model according to the specific circumstances.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 flash dryer for producing pesticide precursors, comprising a base (1), wherein a collection box (2) is provided on one side of the interior of the base (1), characterized in that, A processing tank (3) is provided at the top of the base (1). A cooling tank (5) is provided on one side of the processing tank (3) through a discharge pipe (4). A precursor processing component (6) is provided on one side of the processing tank (3) and the cooling tank (5). A precursor crushing component (7) is provided inside the base (1). A screen (8) is provided on one side of the precursor crushing component (7). A processing component (9) is provided on one side of the screen (8).

2. The flash dryer for pesticide precursor production according to claim 1, characterized in that, The bottom end of the screen (8) is provided with several sets of compression springs (10), and the bottom end of the compression springs (10) is provided with a connecting plate (11).

3. The flash dryer for pesticide precursor production according to claim 1, characterized in that, The precursor processing assembly (6) includes a placement rack (601) installed on one side of the processing tank (3) and the cooling tank (5). An air compressor (602) is provided at the top of the placement rack (601). An air inlet pipe (603) is provided on one side of the air compressor (602). A vortex pipe (604) is provided on one side of the air inlet pipe (603). A heat transfer pipe (605) and a cold transfer pipe (606) are respectively provided on both sides of the vortex pipe (604).

4. The flash dryer for pesticide precursor production according to claim 1, characterized in that, The precursor crushing assembly (7) includes a rotating shaft (701) installed inside the processing tank (3). A servo motor (702) is provided at the bottom end of the rotating shaft (701) and through the processing tank (3). Several sets of connecting blocks (703) are provided on the outside of the rotating shaft (701), and several sets of crushing blades (704) are provided on the outside of the connecting blocks (703).

5. A flash dryer for pesticide precursor production according to claim 4, characterized in that, A transition block (705) is provided on the outer side of the rotating shaft (701), and a plurality of scraping plates (706) are provided on the outer side of the transition block (705).

6. A flash dryer for pesticide precursor production according to claim 1, characterized in that, The processing component (9) includes a mounting box (901) installed on the top of the processing tank (3). A support frame (902) is provided at the bottom of the mounting box (901). A servo motor (903) is provided inside the mounting box (901). A gear (904) is provided on the output shaft of the servo motor (903) and passes through the mounting box (901). Gears (905) meshing with the gear (904) are symmetrically arranged on both sides of the gear (904). A turntable (909) is provided on one side of the gear two (905) through the support frame (902). A sliding frame (906) is provided on the outer side of the turntable (909), and one end of the sliding frame (906) is connected to the support frame (902). A hammer (907) is provided at the bottom end of the sliding frame (906).

7. A flash dryer for pesticide precursor production according to claim 6, characterized in that, The support frame (902) has a sliding cavity (908) inside.

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