A drying apparatus for preparing

Abstract

The utility model discloses a kind of drying devices for preparation, it is related to trifluoromethanesulfonic anhydride preparation technical field, including jar body, the outside of jar body is provided with centrifugal atomizer, and the discharge end of centrifugal atomizer is communicated with the inner wall of jar body, the inside of jar body is provided with stirring subassembly, the utility model has beneficial effect as follows: raw material is atomized into small fog drop by centrifugal atomizer, increase and hot air contact area, improve drying efficiency, spiral stirring blade can be supported stably under the driving of stirring rod, can be brought material up and down, make heated evenly, improve drying quality, heating air is heated by heating box, is transported by fan, evenly distributed in jar by heat conduction ring and form hot air circulation, guide impurity to filter cartridge filtering by guide hopper, prevent its into discharge mechanism, slag pipe and first control valve facilitate to discharge impurity, guarantee device stable and efficient operation.

Description

Technical Field

[0001] This utility model relates to the field of trifluoromethanesulfonic anhydride preparation technology, and in particular to a drying device for preparation. Background Technology

[0002] Trifluoromethanesulfonic anhydride is a colorless, transparent liquid with strong acidity, oxidizing power, and corrosiveness. It is commonly used in organic synthesis as a highly efficient reagent for introducing trifluoromethanesulfonyl groups. In the pharmaceutical field, trifluoromethanesulfonic anhydride can be used to synthesize the anticancer drug paclitaxel. In chemical synthesis, it participates in various reactions, such as palladium-catalyzed coupling reactions and nucleophilic substitution reactions, significantly enhancing reactivity. In addition, it is also used in pesticide manufacturing and the sugar industry. Strict protection is required during handling because it reacts violently with water and can cause fatal damage to the skin and mucous membranes.

[0003] Trifluoromethanesulfonic anhydride, as an important organic synthesis reagent, has wide applications in the pharmaceutical, pesticide, and dye industries. The drying process is crucial in the preparation of trifluoromethanesulfonic anhydride, directly affecting the purity and quality of the product. However, existing drying equipment typically exposes the material directly to a heat source during drying. This process causes the material to accumulate, resulting in uneven heat transfer and prolonged drying time. This not only consumes a large amount of energy but also reduces overall production efficiency. Furthermore, cleaning impurities generated during drying often requires manual removal from the machine, which is cumbersome, increases production costs and time, and has low practicality. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A drying apparatus for preparation includes a tank, a centrifugal atomizer is provided on the outside of the tank and the discharge end of the centrifugal atomizer is connected to the inner wall of the tank, and a stirring assembly is provided inside the tank.

[0007] A heating box and a fan are respectively installed on the outside of the tank, and the air outlet of the fan is connected to the inner wall of the heating box. A heat-conducting ring is installed inside the tank, and the inner wall of the heat-conducting ring is connected to the top of the heating box through a heat-conducting pipe. A material guide hopper is fixed on the inner wall of the tank, and a filter cylinder is connected to the bottom of the material guide hopper. A slag discharge pipe is connected to the bottom of the filter cylinder, and a first control valve is installed on the outside of the slag discharge pipe.

[0008] The stirring assembly includes a stirring rod vertically arranged inside the tank, a spiral stirring blade fixed to the outside of the stirring rod, and multiple connecting rods fixed to the outside of the stirring rod for supporting the spiral stirring blade.

[0009] In a preferred embodiment of the drying apparatus for preparation described in this utility model, the inner wall of the tank is fixed with a fixing frame for fixing the filter cylinder, and the outer side of the tank is fixed with two sets of first support frames for supporting the heating box and the fan respectively.

[0010] In a preferred embodiment of the drying apparatus for preparation described in this utility model, the air inlet of the fan is fixed with a protective cover, and multiple sets of heat dissipation vents are opened on both sides of the protective cover, and a filter screen is fixed on the inner wall of the heat dissipation vent.

[0011] In a preferred embodiment of the drying apparatus for preparation according to the present invention, a lid is installed on the top of the tank, a connecting flange for fixing the lid is fixed on the top of the tank, and a sealing gasket is provided inside the connecting flange.

[0012] In a preferred embodiment of the drying apparatus for preparation according to the present invention, a mounting bracket is fixed to the top of the can lid, a motor is mounted on the top of the mounting bracket, a rotating shaft is fixed to the output end of the motor, and the bottom end of the rotating shaft is fixedly connected to the top end of the stirring rod through a flange.

[0013] In a preferred embodiment of the drying apparatus for preparation described in this utility model, a second support frame for supporting a centrifugal atomizer is fixed on the outer side of the tank body, multiple sets of mounting blocks are fixed on the outer side of the centrifugal atomizer, and the bottom of the mounting blocks is fixedly connected to the top of the second support frame by screws. A feed pipe is connected to the top of the centrifugal atomizer, and a flange is fixed to the top of the feed pipe.

[0014] As a preferred embodiment of the drying apparatus for preparation according to the present invention, the bottom of the tank is designed with a conical structure, the bottom of the tank is connected to a discharge pipe, and a second control valve is provided on the outside of the discharge pipe.

[0015] In summary, this utility model has the following beneficial effects:

[0016] The raw materials are atomized into fine droplets by a centrifugal atomizer, increasing the contact area with hot air and improving drying efficiency. The spiral stirring blades, driven by the stirring rod and supported by the connecting rod, can move the material up and down, ensuring uniform heating and improving drying quality. The heating chamber heats the air, which is then conveyed by a fan and evenly distributed inside the tank through a heat-conducting ring to form a hot air circulation. The guide hopper guides impurities to the filter cartridge for filtration, preventing them from entering the discharge mechanism. The slag discharge pipe and the first control valve facilitate the discharge of impurities, ensuring stable and efficient operation of the device. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of 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. Among them:

[0018] Figure 1 This is a structural diagram of the drying apparatus used in the preparation.

[0019] Figure 2 This is a structural diagram of the tank body of the drying apparatus used for preparation.

[0020] Figure 3 This is a structural diagram of the stirring assembly of the drying apparatus used for preparation.

[0021] Figure 4 This is a structural diagram of the heat-conducting ring of the drying device used in the preparation.

[0022] Figure 5 This is a structural diagram of the filter cartridge for the drying apparatus used in the preparation.

[0023] Labels in the diagram: 1. Tank body; 2. Centrifugal atomizer; 3. Stirring assembly; 31. Stirring rod; 32. Spiral stirring blade; 33. Connecting rod; 4. Heating box; 5. Heat-conducting ring; 6. Fan; 7. Feed hopper; 8. Filter cartridge; 9. Slag discharge pipe; 10. First control valve; 11. Fixing frame; 12. First support frame; 13. Protective cover; 14. Heat dissipation vent; 15. Tank cover; 16. Connecting flange; 17. Sealing gasket; 18. Mounting frame; 19. Motor; 20. Rotating shaft; 21. Second support frame; 22. Mounting block; 23. Feed pipe; 24. Discharge pipe; 25. Second control valve. Detailed Implementation

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0027] Example 1:

[0028] Reference Figures 1-5 This is the first embodiment of the present invention. This embodiment provides a drying device for preparation, including a tank 1. A centrifugal atomizer 2 is provided on the outside of the tank 1, and the discharge end of the centrifugal atomizer 2 is connected to the inner wall of the tank 1. A stirring assembly 3 is provided inside the tank 1.

[0029] Tank 1 serves as the main container of the entire drying device, providing a closed space for the drying process of trifluoromethanesulfonic anhydride. This allows for stirring, atomization, and heating of the material within. Centrifugal atomizer 2 atomizes the trifluoromethanesulfonic anhydride raw material entering the tank, forming fine droplets and increasing the contact area between the material and hot air, thereby improving drying efficiency. Stirring assembly 3 atomizes the material within the tank, ensuring uniform heating during the drying process and preventing localized overheating or uneven drying, thus improving drying quality. It should be noted that the centrifugal atomizer 2 works by generating centrifugal force through a high-speed rotating device, breaking the liquid material into tiny droplets for atomization. When the liquid material is conveyed through feed pipe 23 to the center of the high-speed rotating turntable, it accelerates and diffuses along the turntable surface under centrifugal force, forming a liquid film that rapidly moves towards the edge of the turntable. When the liquid film reaches the edge, the centrifugal force overcomes the surface tension of the liquid, causing it to be thrown out and broken into droplets. Simultaneously, friction between the droplets and the surrounding air further promotes the splitting, forming even finer droplets.

[0030] A heating box 4 and a blower 6 are respectively installed on the outside of the tank body 1, and the air outlet of the blower 6 is connected to the inner wall of the heating box 4. A heat-conducting ring 5 is installed inside the tank body 1, and the inner wall of the heat-conducting ring 5 is connected to the top of the heating box 4 through a heat-conducting pipe. A guide hopper 7 is fixed on the inner wall of the tank body 1, and a filter cylinder 8 is connected to the bottom of the guide hopper 7. A slag discharge pipe 9 is connected to the bottom of the filter cylinder 8, and a first control valve 10 is installed on the outside of the slag discharge pipe 9.

[0031] The heating chamber 4 is used to heat the air entering it, providing hot air for the drying process. The heat-conducting ring 5 is used to guide the heated air from the heating chamber 4 into the tank 1, ensuring the hot air is evenly distributed inside the tank 1 for comprehensive drying of the material. The fan 6 is used to draw in outside air and deliver it to the heating chamber 4, where it is heated before entering the tank 1, forming a hot air circulation to dry the material. The guide hopper 7 is used to guide impurities or large particles generated during the drying process into the filter cylinder 8. The filter cylinder 8 is used to filter the impurities or large particles entering it, preventing them from entering the subsequent discharge mechanism. The slag discharge pipe 9 is... The filter cylinder 8 is used to discharge impurities or large particles filtered out. The first control valve 10 is used to control the opening and closing of the slag discharge pipe 9, so that impurities or large particles can be discharged when needed. It should be noted that the heating box 4 is mainly a closed container for heating air. Its working principle is as follows: the fan 6 draws in outside air and delivers it into the heating box 4. An electric heater is installed in the box. When the air flows through the heating element, the heating element is energized to generate heat and transfers the heat to the air, so that the air temperature rises and becomes hot air. Then, the hot air enters the heat conduction ring 5 through the heat conduction pipe connected to the top of the heating box 4, and is then evenly distributed into the tank 1 to provide the heat source required for the drying process of trifluoromethanesulfonic anhydride.

[0032] The stirring assembly 3 includes a stirring rod 31 vertically arranged inside the tank 1, a spiral stirring blade 32 fixed on the outside of the stirring rod 31, and multiple connecting rods 33 fixed on the outside of the stirring rod 31 to support the spiral stirring blade 32.

[0033] The stirring rod 31 serves as the main body of the stirring assembly 3, providing a mounting base for other stirring components. The spiral stirring blade 32 can stir the material in the tank as the stirring rod 31 rotates. Its spiral shape can better drive the material to tumble up and down, enhancing the stirring effect. The connecting rod 33 is used to support the spiral stirring blade 32, ensuring the stability of the spiral stirring blade 32 during the stirring process.

[0034] Example 2:

[0035] This is the second embodiment of the present invention, which is based on the previous embodiment.

[0036] Specifically, the inner wall of the tank 1 is fixed with a fixing frame 11 for fixing the filter cartridge 8, and the outer side of the tank 1 is fixed with two sets of first support frames 12 for supporting the heating box 4 and the fan 6 respectively.

[0037] The fixing frame 11 is used to fix the filter cartridge 8 to ensure the stability of the filter cartridge 8 in the tank 1. The first support frame 12 is used to support the heating box 4 and the fan 6 respectively to ensure the stable installation of the heating box 4 and the fan 6.

[0038] Specifically, the air inlet of the fan 6 is fixed with a protective cover 13, and multiple sets of heat dissipation vents 14 are opened on both sides of the protective cover 13, and a filter screen is fixed on the inner wall of the heat dissipation vent 14.

[0039] The protective cover 13 is designed to protect the internal structure of the fan 6, and the heat dissipation vent 14 is designed to dissipate the heat generated by the fan 6 during operation. At the same time, the filter screen on its inner wall can prevent dust and impurities from entering the fan 6 through the heat dissipation vent 14 and affecting the normal operation of the fan 6.

[0040] Specifically, a tank cover 15 is installed on the top of the tank body 1, and a connecting flange 16 for fixing the tank cover 15 is fixed on the top of the tank body 1. A sealing gasket 17 is provided inside the connecting flange 16.

[0041] The can lid 15 is used to open or close the can 1, facilitating the inspection and cleaning of the inside of the can 1. The connecting flange 16 is used to connect the can 1 and the can lid 15, and the two are tightly fixed together by bolts. The sealing gasket 17 can enhance the sealing of the connection between the can 1 and the can lid 15, prevent the material in the can 1 from leaking during the drying process, and ensure the stability of the drying environment.

[0042] Specifically, a mounting bracket 18 is fixed to the top of the can lid 15, a motor 19 is mounted on the top of the mounting bracket 18, a rotating shaft 20 is fixed to the output end of the motor 19, and the bottom end of the rotating shaft 20 is fixedly connected to the top end of the stirring rod 31 through a flange.

[0043] The mounting bracket 18 is used to mount the motor 19, providing a stable mounting position for the motor 19. The motor 19 serves as the power source for the stirring assembly 3, driving the rotating shaft 20 to rotate through its output end. The rotating shaft 20 is used to transmit the rotational power of the motor 19 to the stirring rod 31, causing the stirring rod 31 to rotate.

[0044] Example 3:

[0045] This is the third embodiment of the present invention, which is based on the first two embodiments.

[0046] Specifically, a second support frame 21 for supporting the centrifugal atomizer 2 is fixed on the outside of the tank body 1. Multiple sets of mounting blocks 22 are fixed on the outside of the centrifugal atomizer 2, and the bottom of the mounting block 22 is fixedly connected to the top of the second support frame 21 by screws. The top of the centrifugal atomizer 2 is connected to the feed pipe 23, and a flange is fixed to the top of the feed pipe 23.

[0047] The second support frame 21 is used to support the centrifugal atomizer 2 and ensure the stable installation of the centrifugal atomizer 2. The mounting block 22 is connected to the top of the second support frame 21 by screws, which can further enhance the connection stability between the centrifugal atomizer 2 and the second support frame 21. The feed pipe 23 is used to transport trifluoromethanesulfonic anhydride raw material to the centrifugal atomizer 2. The flange can facilitate the connection between the feed pipe 23 and the raw material conveying pipeline.

[0048] Specifically, the bottom of the tank 1 is designed with a conical structure, and the bottom of the tank 1 is connected to a discharge pipe 24. A second control valve 25 is installed on the outside of the discharge pipe 24.

[0049] The discharge pipe 24 is used to discharge the dried trifluoromethanesulfonic anhydride product, and the second control valve 25 is used to control the opening and closing of the discharge pipe 24, so as to facilitate the control of the discharge time and flow rate of the product.

[0050] Working Principle: In operation, the trifluoromethanesulfonic anhydride preparation drying device first feeds the trifluoromethanesulfonic anhydride raw material through the feed pipe 23 into the centrifugal atomizer 2. The centrifugal atomizer 2 atomizes the raw material into fine droplets, which are then sprayed into the tank 1 through the discharge end, increasing the contact area between the material and the subsequent hot air and improving drying efficiency. Next, the fan 6 is started, drawing in outside air through the protective cover 13. The heat dissipation vents 14 and filter screen on the protective cover 13 prevent dust and impurities from entering, ensuring clean air. The drawn-in air enters the heating chamber 4 and is heated into hot air. The hot air then enters the heat-conducting ring 5 through the heat-conducting pipe and is evenly distributed into the tank 1, forming a hot air circulation that dries the atomized trifluoromethanesulfonic anhydride raw material. Simultaneously, the motor 19 is started, and the motor 19 drives the stirring rod 31 to rotate through the rotating shaft 20. The spiral stirring blades 32 on the stirring rod 31, supported by the connecting rod 33, stir the material in the tank, so that the material is heated evenly, avoiding local overheating or uneven drying, and improving the drying quality. During the drying process, the guide hopper 7 guides the generated impurities or large particles to the filter cylinder 8 for filtration to prevent them from entering the discharge mechanism. When slag discharge is required, the first control valve 10 is opened, and the impurities or large particles can be discharged through the slag discharge pipe 9. After drying is completed, the second control valve 25 can be opened to discharge the dried trifluoromethanesulfonic anhydride product through the discharge pipe 24 with a conical bottom, so as to achieve efficient drying of trifluoromethanesulfonic anhydride.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A drying apparatus for preparation, comprising a tank (1), characterized in that: A centrifugal atomizer (2) is provided on the outside of the tank (1), and the discharge end of the centrifugal atomizer (2) is connected to the inner wall of the tank (1). A stirring assembly (3) is provided inside the tank (1). A heating box (4) and a fan (6) are respectively provided on the outside of the tank (1), and the air outlet of the fan (6) is connected to the inner wall of the heating box (4). A heat-conducting ring (5) is provided inside the tank (1), and the inner wall of the heat-conducting ring (5) is connected to the top of the heating box (4) through a heat-conducting pipe. A guide hopper (7) is fixed on the inner wall of the tank (1), and a filter cylinder (8) is connected to the bottom of the guide hopper (7). A slag discharge pipe (9) is connected to the bottom of the filter cylinder (8), and a first control valve (10) is provided on the outside of the slag discharge pipe (9). The stirring assembly (3) includes a stirring rod (31) arranged vertically inside the tank (1), a spiral stirring blade (32) fixed on the outside of the stirring rod (31), and multiple connecting rods (33) fixed on the outside of the stirring rod (31) for supporting the spiral stirring blade (32).

2. The drying apparatus for preparation as described in claim 1, characterized in that: The inner wall of the tank (1) is fixed with a fixing frame (11) for fixing the filter cylinder (8), and the outer side of the tank (1) is fixed with two sets of first support frames (12) for supporting the heating box (4) and the fan (6) respectively.

3. The drying apparatus for preparation as described in claim 1, characterized in that: The air inlet of the fan (6) is fixed with a protective cover (13), and multiple sets of heat dissipation vents (14) are opened on both sides of the protective cover (13), and a filter screen is fixed on the inner wall of the heat dissipation vent (14).

4. The drying apparatus for preparation as described in claim 1, characterized in that: The top of the tank (1) is fitted with a tank cover (15), and the top of the tank (1) is fixed with a connecting flange (16) for fixing the tank cover (15), and a sealing gasket (17) is provided inside the connecting flange (16).

5. The drying apparatus for preparation as described in claim 4, characterized in that: The top of the can lid (15) is fixed with a mounting bracket (18), and a motor (19) is mounted on the top of the mounting bracket (18). The output end of the motor (19) is fixed with a rotating shaft (20), and the bottom end of the rotating shaft (20) is fixedly connected to the top end of the stirring rod (31) through a flange.

6. The drying apparatus for preparation as described in claim 1, characterized in that: The outer side of the tank (1) is fixed with a second support frame (21) for supporting the centrifugal atomizer (2). Multiple sets of mounting blocks (22) are fixed on the outer side of the centrifugal atomizer (2), and the bottom of the mounting block (22) is fixed to the top of the second support frame (21) by screws. The top of the centrifugal atomizer (2) is connected to the feed pipe (23), and the top of the feed pipe (23) is fixed with a flange.

7. The drying apparatus for preparation as described in claim 1, characterized in that: The bottom of the tank (1) is designed with a conical structure, and the bottom of the tank (1) is connected to a discharge pipe (24). A second control valve (25) is provided on the outside of the discharge pipe (24).

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