Drying equipment for 2-chloronicotinic acid production

Abstract

The utility model relates to the technical field of chemical production equipment, in particular to drying equipment for 2-chloronicotinic acid production, and solves the problems that in the prior art, as a supporting structure for bearing chloronicotinic acid is not provided with a shielding structure for preventing the chloronicotinic acid from flowing, the chloronicotinic acid easily flows and is attached to the inner wall of a drying container, and the drying effect is poor. Not only is the drying yield influenced, but also the drying efficiency is seriously influenced after long-term accumulation. The utility model discloses drying equipment for 2-chloronicotinic acid production. The drying equipment comprises a drying bin and two bin doors which are symmetrically and rotationally connected to one side of the drying bin; two drying chambers are arranged on one side of the drying bin, a movable frame is arranged in each drying chamber, and a plurality of bearing boxes are detachably connected into the movable frames. According to the utility model, the U-shaped protective cover is arranged, so that the flowing of dichloronicotinic acid powder is effectively prevented, the situation that materials are attached to the inner wall of the drying container is reduced, and the drying yield and efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of chemical production equipment technology, and in particular to a drying equipment for the production of 2-chloronicotinic acid. Background Technology

[0002] 2-Chloronicotinic acid (2-chloronicotinic acid) is an important organic synthesis intermediate with wide applications in pharmaceuticals, dyes, and other chemical fields. It can be used to synthesize various drugs, such as antibiotics, analgesics, and anticancer drugs, and also as a raw material for dyeing textiles and leather. Because 2-chloronicotinic acid needs to maintain specific physical properties, such as dryness, during production, drying becomes a crucial step in its production process. Efficient drying equipment has a decisive impact on ensuring the quality of 2-chloronicotinic acid, improving production efficiency, and ensuring operational safety. Especially in this core drying process, existing drying equipment is gradually revealing significant limitations when processing powdered 2-chloronicotinic acid.

[0003] Specifically, existing drying equipment for dichloronicotinic acid production, such as the grading drying device for dichloronicotinic acid processing raw material production disclosed in Chinese Patent Application No. 201922237591.5, while solving the problems of uniform heating of raw materials, control of discharge speed, and effective grading and screening, still faces some challenges in actual operation. For example, because the support structure for carrying dichloronicotinic acid lacks a shielding structure to prevent dichloronicotinic acid from drifting, it easily drifts and adheres to the inner wall of the drying container. This not only affects the drying output of dichloronicotinic acid but also seriously affects drying efficiency over a long period. In addition, this adhesion increases the difficulty of cleaning, leading to additional labor costs and downtime, further increasing production costs and potentially posing risks to product quality.

[0004] Therefore, to address the shortcomings of existing technologies, we urgently need a drying equipment for 2-chloronicotinic acid production. This equipment should significantly improve drying efficiency and quality while better meeting the demands of modern production, providing strong support for the sustainable development of 2-chloronicotinic acid production. Utility Model Content

[0005] The purpose of this invention is to provide a drying device for the production of 2-chloronicotinic acid, which solves the problem that the supporting structure for 2-chloronicotinic acid does not have a shielding structure to prevent the 2-chloronicotinic acid from drifting, causing the 2-chloronicotinic acid to easily drift and adhere to the inner wall of the drying container. This not only affects the drying output of 2-chloronicotinic acid, but also seriously affects the drying efficiency after long-term accumulation.

[0006] To achieve the above objectives, this utility model provides a drying device for the production of 2-chloronicotinic acid, comprising a drying chamber and two symmetrically rotatably connected doors on one side of the drying chamber;

[0007] Two drying chambers are provided on one side of the drying chamber. Each drying chamber is equipped with a movable frame inside, and several support boxes are detachably connected inside the movable frame.

[0008] The top and both sides of the movable frame are provided with openings that communicate with the interior of the movable frame. The top of the movable frame is provided with a U-shaped protective cover. The horizontal section of the protective cover is adapted to the top of the movable frame, and the two vertical sections of the protective cover are adapted to the side walls of the movable frame.

[0009] The protective cover has several through holes on its side wall and is made of metal wire mesh.

[0010] The movable frame has fixed rods on both sides of its top, and both ends of the fixed rods are detachably connected to the inner wall of the movable frame.

[0011] The movable frame has several horizontal plates connected to its inner sides. One side of each horizontal plate has a slot for insertion. Both sides of the support box have fixedly connected plug plates that are compatible with the slots.

[0012] The movable frame has two handles symmetrically arranged on one side, and one side of each handle is bolted to the side wall of the movable frame.

[0013] The inner wall of the protective cover is bolted to the side wall of the movable frame, and several ventilation slots are provided on the top of both sides of the support box.

[0014] The bottom of each of the two drying chambers has two guide grooves adapted to the moving wheels of the moving frame, and each guide groove has an inclined groove on the side near the door.

[0015] This invention relates to a drying device for the production of 2-chloronicotinic acid. By incorporating a U-shaped protective cover at the top of the movable frame, this device solves the problem in existing technologies where the lack of a shielding structure leads to 2-chloronicotinic acid easily drifting and adhering to the inner wall of the drying container. This reduces the decrease in drying efficiency and increased cleaning difficulty caused by material adhesion. The protective cover is made of wire mesh with several through holes on its side walls, effectively preventing the drift of 2-chloronicotinic acid powder while ensuring sufficient ventilation, thus improving drying efficiency and quality. Furthermore, the movable frame design facilitates loading and unloading operations, reduces downtime, lowers labor costs, and further improves production efficiency. The entire drying equipment not only increases the drying output of 2-chloronicotinic acid but also significantly reduces cleaning difficulties and additional labor costs caused by long-term accumulation, thereby lowering production costs and ensuring product quality. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0018] Figure 2 This is a structural schematic diagram of the movable frame and support box according to an embodiment of the present utility model.

[0019] Figure 3 This is a schematic diagram of the guide groove and inclined groove in an embodiment of the present invention.

[0020] Figure 4 This is a structural schematic diagram of the support box and the plug-in plate according to an embodiment of the present utility model.

[0021] Figure 5 This is a schematic diagram of the structure of the horizontal plate and the insertion slot in an embodiment of this utility model.

[0022] In the diagram: 1. Drying chamber; 2. Chamber door; 3. Drying room; 4. Support box; 5. Moving frame; 6. Guide groove; 7. Inclined groove; 8. Ventilation groove; 9. Connecting plate; 10. Handle; 11. Connecting groove; 12. Horizontal plate; 13. Fixing rod; 14. Protective cover. Detailed Implementation

[0023] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0024] Example 1

[0025] Please see Figure 1-5 As shown, a drying device for the production of 2-chloronicotinic acid in this embodiment includes a drying chamber 1 and two symmetrically and rotatably connected doors 2 on one side of the drying chamber 1; two drying chambers 3 are provided on one side of the drying chamber 1, and each drying chamber 3 is provided with a movable frame 5 inside, and several support boxes 4 are detachably connected inside the movable frame 5; the top and both sides of the movable frame 5 are provided with openings communicating with the interior of the movable frame 5, and the top of the movable frame 5 is provided with a U-shaped protective cover 14, the horizontal section of the protective cover 14 is adapted to the top of the movable frame 5, and the two vertical sections of the protective cover 14 are adapted to the side walls of the movable frame 5; several through holes are provided on the side walls of the protective cover 14, and the protective cover 14 is made of metal wire mesh.

[0026] First, by opening the two symmetrical and rotatably connected doors 2 on one side of the drying chamber 1, the 2-chloronicotinic acid to be dried is placed into several detachably connected support boxes 4 inside the movable frame 5. Each drying chamber 1 has two drying chambers 3 on one side, and each drying chamber 3 contains such a movable frame 5. The top and sides of the movable frame 5 have openings communicating with the interior of the frame 5 to facilitate air circulation and uniform heating. To prevent 2-chloronicotinic acid from escaping during the drying process, a U-shaped protective cover 14 is installed on the top of the movable frame 5. The horizontal section of the protective cover 14 fits the top of the movable frame 5, and the vertical section fits the side wall of the frame 5. The side wall of the protective cover 14 has several through holes and is made of wire mesh, which not only effectively prevents the 2-chloronicotinic acid powder from escaping but also ensures good ventilation and promotes heat exchange during the drying process.

[0027] Example 2

[0028] Please see Figure 1-5 As shown in this embodiment, a drying device for the production of 2-chloronicotinic acid has a fixed rod 13 on both sides of the top of the inner side of the movable frame 5. Both ends of the fixed rod 13 are detachably connected to the inner wall of the movable frame 5. Specifically, the design of the fixed rod 13 on both sides of the top of the inner side of the movable frame 5, with both ends detachably connected to the inner wall of the movable frame 5, enhances the overall structural strength and stability of the movable frame 5.

[0029] Two handles 10 are symmetrically arranged on one side of the movable frame 5. One side of each handle 10 is bolted to the side wall of the movable frame 5. Specifically, this design, with two handles 10 symmetrically arranged on one side of the movable frame 5 and bolted to the side wall of the movable frame 5, provides a convenient manual operation method, allowing users to easily push or pull the movable frame 5 into or out of the drying chamber 3. This design not only simplifies the operation process but also reduces labor intensity, thereby improving operational convenience and work efficiency.

[0030] Example 3

[0031] Please see Figure 1-5As shown in this embodiment, a drying device for 2-chloronicotinic acid production has several horizontal plates 12 connected to the inner sides of a movable frame 5. One side of each horizontal plate 12 has an insertion slot 11. The bottom sides of the support box 4 are fixedly connected with insertion plates 9 that are compatible with the insertion slots 11. Specifically, the combination of the horizontal plates 12 connected to the inner sides of the movable frame 5, the insertion slots 11 on one side of each horizontal plate 12, and the insertion plates 9 fixedly connected to the bottom sides of the support box 4 enables rapid installation and disassembly between the support box 4 and the movable frame 5. This design not only improves operational efficiency but also facilitates cleaning and maintenance, thus enhancing the flexibility and ease of use of the equipment.

[0032] The inner wall of the protective cover 14 is bolted to the side wall of the movable frame 5. Several ventilation slots 8 are provided on the top of both sides of the support box 4. Specifically, the design of bolting the inner wall of the protective cover 14 to the side wall of the movable frame 5 and providing several ventilation slots 8 on the top of both sides of the support box 4 further optimizes the ventilation performance of the equipment, ensuring that hot air can circulate evenly and contact all materials to be dried. This setup effectively improves drying efficiency and quality, reduces quality problems caused by localized overheating or underheating, and achieves the effect of improving drying consistency and product quality.

[0033] Each of the two drying chambers 3 has two guide grooves 6 at the bottom of its inner cavity, adapted to the moving wheels of the movable frame 5. Each guide groove 6 has an inclined groove 7 on the side near the door 2. Specifically, this design, with two guide grooves 6 at the bottom of the inner cavity of each of the two drying chambers 3 adapted to the moving wheels of the movable frame 5, and an inclined groove 7 on the side of each guide groove 6 near the door 2, achieves precise guidance and smooth entry and exit of the movable frame 5. The inclined groove 7 helps reduce friction during the entry and exit of the movable frame 5, making operation smoother. This design not only improves the stability and reliability of the equipment but also extends its service life, achieving the effect of enhancing the ease of operation and durability of the equipment.

[0034] This solution includes the following work process:

[0035] First, by opening the two symmetrical and rotatably connected doors 2 on one side of the drying chamber 1, the 2-chloronicotinic acid to be dried is placed into several detachably connected support boxes 4 inside the movable frame 5. Each drying chamber 1 has two drying chambers 3 on one side, and each drying chamber 3 contains such a movable frame 5. The top and sides of the movable frame 5 have openings communicating with the interior of the movable frame 5 to facilitate air circulation and uniform heating. To prevent 2-chloronicotinic acid from escaping during the drying process, a U-shaped protective cover 14 is installed on the top of the movable frame 5. The horizontal section of the protective cover 14 fits the top of the movable frame 5, and the vertical section fits the side wall of the movable frame 5. The side wall of the protective cover 14 has several through holes and is made of wire mesh, which not only effectively prevents the 2-chloronicotinic acid powder from escaping but also ensures good ventilation and promotes heat exchange during the drying process. Fixing rods 13 are installed on the top of both sides inside the movable frame 5, with both ends detachably connected to the inner wall of the movable frame 5, enhancing the overall structural strength and stability of the movable frame 5. Several horizontal plates 12 are connected to the inner sides of the movable frame 5. One side of each horizontal plate 12 has a slot 11. The bottom sides of the support box 4 are fixedly connected to slot 9 plates 9 that match the slot 11, enabling quick installation and disassembly between the support box 4 and the movable frame 5. Two handles 10 are symmetrically arranged on one side of the movable frame 5. One side of each handle 10 is bolted to the side wall of the movable frame 5, allowing users to easily push or pull the movable frame 5 into or out of the drying chamber 3. The inner wall of the protective cover 14 is bolted to the side wall of the movable frame 5, and several ventilation slots 8 are provided on the top sides of both sides of the support box 4, further optimizing the equipment's ventilation performance and ensuring that hot air circulates evenly and contacts all materials to be dried. Two guide slots 6, adapted to the moving wheels of the movable frame 5, are provided at the bottom of the inner cavity of each of the two drying chambers 3. Each guide slot 6 has an inclined groove 7 on the side near the door 2, enabling precise guidance and smooth entry and exit of the movable frame 5.

[0036] This design brings significant benefits: The drying equipment for 2-chloronicotinic acid production solves the problem in existing technologies where the lack of a shielding structure causes 2-chloronicotinic acid to easily drift and adhere to the inner wall of the drying container, reducing the decrease in drying efficiency and increased cleaning difficulty caused by material adhesion. The protective cover 14 is made of wire mesh with several through holes on its side walls, effectively preventing the drift of 2-chloronicotinic acid powder while ensuring sufficient ventilation, thus improving drying efficiency and quality. Fixed rods 13 are installed on the top of both sides of the interior of the moving frame 5, enhancing the overall structural strength and stability, ensuring the durability and safety of the equipment during use. The horizontal plates 12 connected to the inside of the moving frame 5 cooperate with the insertion plates 9 of the support box 4, enabling quick installation and disassembly of the support box 4, improving operational efficiency and facilitating cleaning and maintenance. The handles 10 symmetrically arranged on one side of the moving frame 5 provide a convenient manual operation method, simplifying the operation process and reducing labor intensity. The ventilation slots 8 on both sides of the top of the support box 4 further optimize ventilation performance, ensuring that hot air can circulate evenly and contact all materials to be dried, thus improving drying consistency and product quality. The guide slots 6 and inclined slots 7 at the bottom of the drying chamber 3 enable precise guidance and smooth entry and exit of the moving frame 5, reducing friction and making operation smoother. At the same time, it improves the stability and reliability of the equipment and extends its service life.

[0037] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A drying device for the production of 2-chloronicotinic acid, characterized in that, include: The drying chamber and two symmetrical, rotatably connected doors on one side of the drying chamber; Two drying chambers are provided on one side of the drying chamber. Each drying chamber is equipped with a movable frame inside, and several support boxes are detachably connected inside the movable frame. The top and both sides of the movable frame are provided with openings that communicate with the interior of the movable frame. The top of the movable frame is provided with a U-shaped protective cover. The horizontal section of the protective cover is adapted to the top of the movable frame, and the two vertical sections of the protective cover are adapted to the side walls of the movable frame. The protective cover has several through holes on its side wall and is made of metal wire mesh.

2. The drying equipment for 2-chloronicotinic acid production according to claim 1, characterized in that, The top of both sides of the inside of the movable frame is provided with fixing rods, and both ends of the fixing rods are detachably connected to the inner wall of the movable frame.

3. The drying equipment for 2-chloronicotinic acid production according to claim 1, characterized in that, The movable frame has several horizontal plates connected to its inner sides. One side of each horizontal plate has a slot for insertion. Both sides of the support box have fixedly connected plug plates that are compatible with the slots.

4. The drying equipment for 2-chloronicotinic acid production according to claim 2, characterized in that, Two handles are symmetrically arranged on one side of the movable frame, and one side of each handle is bolted to the side wall of the movable frame.

5. A drying device for the production of 2-chloronicotinic acid according to claim 3, characterized in that, The inner wall of the protective cover is bolted to the side wall of the movable frame, and several ventilation slots are provided on the top of both sides of the support box.

6. A drying device for the production of 2-chloronicotinic acid according to claim 5, characterized in that, Two guide grooves adapted to the moving wheels of the moving frame are opened at the bottom of the inner cavity of each of the two drying chambers, and an inclined groove is opened on the side of each guide groove near the door.

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