Drying machine for paranitroaniline production

Abstract

The utility model relates to the field of nitroaniline, and discloses a drying machine for paranitroaniline production, which comprises a frame, a placing box is fixedly mounted at the top of the frame, a connecting box is fixedly mounted on the left side of the placing box, and a heating box is fixedly mounted on the left side of the connecting box. A heating assembly for heating nitroaniline is arranged in the heating box, and a rotating assembly for stirring nitroaniline is arranged in the placing box. Through mutual cooperation of the electric heating wire, the conveying pipe and the fan, when nitroaniline is placed in the placing box, the electric heating wire can be electrified, when the electric heating wire reaches enough temperature, the fan can be started at the moment, the fan can extract outside air into the heating box, and the nitroaniline can be heated in the heating box. And then hot air in the heating box can enter a conveying pipe, the conveying pipe conveys heat of the hot air into the containing box, and therefore nitroaniline in the containing box can be dried.

Description

Technical Field

[0001] This utility model relates to the field of nitroaniline, and more particularly to a dryer for the production of p-nitroaniline. Background Technology

[0002] Nitroaniline is a class of organic compounds containing nitro and amino groups. It exists in three isomers: ortho, meta, and para. It is a toxic substance that can be absorbed through the skin and respiratory tract. Nitroaniline is a potent methemoglobin-forming agent. The methemoglobin formed causes tissue hypoxia, resulting in cyanosis and damage to the central nervous system, cardiovascular system, and other organs. It also has hemolytic effects and can cause hemolytic anemia. Long-term exposure to large amounts can cause liver damage.

[0003] After the synthesis reaction of p-nitroaniline is completed, the product usually contains a certain amount of water and residual solvents and other impurities. The presence of these water and impurities not only affects the purity of p-nitroaniline, but may also trigger chemical reactions during storage and transportation, leading to product deterioration. Moreover, moist p-nitroaniline may clump, affecting its flowability and dispersibility in subsequent processing.

[0004] Conventional hot air drying equipment uses direct contact between hot air and p-nitroaniline to evaporate moisture. This static drying method is relatively slow because the hot air mainly transfers mass and heat on the surface of the material, and the internal moisture needs to gradually migrate to the surface through diffusion before it can be removed. This results in a long overall drying time and low production efficiency. Moreover, during the drying process, the uneven temperature distribution of the hot air can easily cause local overheating of p-nitroaniline, leading to quality problems such as product discoloration and decomposition. Therefore, a dryer for p-nitroaniline production is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a dryer for the production of p-nitroaniline, which aims to improve the existing technology by addressing issues such as long drying time, low production efficiency, and uneven temperature distribution of hot air during the drying process, which can easily cause local overheating of p-nitroaniline, leading to product discoloration, decomposition, and other quality problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A dryer for the production of p-nitroaniline includes a frame, a placement box fixedly mounted on the top of the frame, a connecting box fixedly mounted on the left side of the placement box, a heating box fixedly mounted on the left side of the connecting box, a heating component for heating p-nitroaniline inside the heating box, a rotating component for stirring p-nitroaniline inside the placement box, a cover plate on the right side of the placement box, three sets of temperature sensors fixedly mounted on the left side of the cover plate, and a display fixedly mounted on the right side of the cover plate. The output terminals of the temperature sensors and the input terminals of the display are electrically connected.

[0008] As a further description of the above technical solution:

[0009] The heating assembly includes an electric heating wire, the bottom of which is fixedly installed on the bottom of the heating wire and the bottom of the inner wall of the heating box. Several sets of conveying pipes are fixedly installed inside the heating box. The right end of the conveying pipes extends into the interior of the box. A fan is connected to the left side of the heating box. The bottom of the fan is fixedly installed on the top of the frame.

[0010] As a further description of the above technical solution:

[0011] The rotating assembly includes a rotating rod, the bottom of which extends through to the bottom of the placement box and is fixedly mounted with a motor. The top of the motor and the bottom of the placement box are fixedly mounted. The rotating rod and the placement box are rotatably mounted. Three sets of placement frames are fixedly mounted on the surface of the rotating rod.

[0012] As a further description of the above technical solution:

[0013] A stirring rod is fixedly installed on the rear side of the inner wall of the placement box, and the bottom of the stirring rod is in contact with the bottom of the inner wall of the placement box.

[0014] As a further description of the above technical solution:

[0015] Mounting plates are fixedly installed on the top and bottom of the placement box. The front and right sides of the inner side of the mounting plate are provided with locking blocks. Limiting rods are fixedly installed on the outer side of the locking blocks. The outer end of the limiting rods extends through to the outer side of the mounting plate and slides with the mounting plate.

[0016] As a further description of the above technical solution:

[0017] A spring is sleeved on the surface of the limiting rod, the outer end of the spring is fixedly installed to the inner end of the mounting plate, and the inner end of the spring is fixedly installed to the outer side of the locking block.

[0018] As a further description of the above technical solution:

[0019] A movable plate is provided on the outer side of the mounting plate, and the inner side of the movable plate and the outer end of the limiting rod are fixedly installed.

[0020] This utility model has the following beneficial effects:

[0021] In this invention, the electric heating wire, the conveying pipe, and the fan work together. When nitroaniline is placed inside the placement box, the electric heating wire can be energized. When the electric heating wire reaches a sufficient temperature, the fan can be started. The fan can draw outside air into the heating box, and then the hot air inside the heating box will enter the conveying pipe. The conveying pipe will then transfer its heat to the placement box, thereby drying the nitroaniline inside the placement box.

[0022] In this invention, the rotating rod, motor, and placement frame work together to first place the nitroaniline to be dried inside the placement frame. When it is necessary to quickly dry the nitroaniline inside the placement box, the motor can be started. The motor output drives the rotating rod and placement frame to rotate. The rotation of the placement frame can accelerate the airflow inside the placement box, thereby accelerating the drying efficiency of the nitroaniline. Attached Figure Description

[0023] Figure 1 A three-dimensional schematic diagram of the top of the frame is provided for this utility model;

[0024] Figure 2 A left view of the placement box is provided for this utility model;

[0025] Figure 3 Cross-sectional views of the housing, connecting box, and heating box are provided for this utility model;

[0026] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0027] Figure 5 This utility model Figure 2 Enlarged structural diagram at point B in the middle.

[0028] Legend:

[0029] 1. Frame; 2. Placement box; 3. Connection box; 4. Heating box; 5. Heating assembly; 51. Electric heating wire; 52. Delivery pipe; 53. Fan; 6. Rotating assembly; 61. Rotating rod; 62. Motor; 63. Placement frame; 64. Stirring rod; 7. Cover plate; 8. Temperature sensor; 9. Display; 10. Mounting plate; 11. Locking block; 12. Limiting rod; 13. Spring; 14. Moving plate. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figure 1-5 This utility model provides an embodiment of a dryer for the production of p-nitroaniline, comprising a frame 1, a placement box 2 fixedly mounted on the top of the frame 1, a connecting box 3 fixedly mounted on the left side of the placement box 2, a heating box 4 fixedly mounted on the left side of the connecting box 3, a heating component 5 for heating p-nitroaniline inside the heating box 4, a rotating component 6 for stirring p-nitroaniline inside the placement box 2, a cover plate 7 on the right side of the placement box 2, three sets of temperature sensors 8 fixedly mounted on the left side of the cover plate 7, and a display 9 fixedly mounted on the right side of the cover plate 7. The temperature sensors 8 output... The output terminal and the input terminal of the display 9 are electrically connected. First, the nitroaniline to be dried can be placed inside the placement box 2, and then the cover plate 7 and the placement box 2 are sealed. Then, the inside of the placement box 2 can be heated by the heating component 5, so that the nitroaniline can be gradually dried. In order to improve the drying efficiency of nitroaniline, the nitroaniline can be stirred by the rotating component 6. At this time, the temperature sensor 8 can detect the temperature inside the placement box 2. The temperature detected by the temperature sensor 8 will be transmitted to the display 9, so that the temperature inside the placement box 2 can be known, preventing the nitroaniline from overheating and causing a chemical reaction.

[0032] Reference Figure 1-5 The heating assembly 5 includes an electric heating wire 51, the bottom of which is fixedly installed on the bottom of the inner wall of the heating box 4. Several sets of conveying pipes 52 are fixedly installed inside the heating box 4. The right end of the conveying pipe 52 extends into the interior of the placement box 2. A fan 53 is connected to the left side of the heating box 4. The bottom of the fan 53 is fixedly installed on the top of the frame 1. Through the cooperation of the electric heating wire 51, the conveying pipe 52 and the fan 53, when nitroaniline is placed inside the placement box 2, the electric heating wire 51 can be energized. When the electric heating wire 51 reaches a sufficient temperature, the fan 53 can be started. The fan 53 can draw outside air into the heating box 4. Then the hot air inside the heating box 4 will enter the conveying pipe 52. The conveying pipe 52 will then transfer its heat to the interior of the placement box 2, thereby drying the nitroaniline inside the placement box 2.

[0033] Reference Figure 1-5The rotating assembly 6 includes a rotating rod 61, the bottom of which extends through to the bottom of the placement box 2 and is fixedly mounted with a motor 62. The top of the motor 62 is fixedly mounted to the bottom of the placement box 2. The rotating rod 61 and the placement box 2 are rotatably mounted. Three sets of placement frames 63 are fixedly mounted on the surface of the rotating rod 61. Through the cooperation of the rotating rod 61, the motor 62, and the placement frames 63, the nitroaniline to be dried can first be placed inside the placement frames 63. When it is necessary to quickly dry the nitroaniline inside the placement box 2, the motor 62 can be started, and the output end of the motor 62 drives the rotation. The rod 61 and the placement frame 63 rotate. The rotation of the placement frame 63 accelerates the airflow inside the placement box 2, thereby speeding up the drying efficiency of p-nitroaniline. A stirring rod 64 is fixedly installed on the rear side of the inner wall of the placement box 2. The bottom of the stirring rod 64 contacts the bottom of the inner wall of the placement frame 63. With the stirring rod 64, when the placement frame 63 rotates, the p-nitroaniline inside the placement frame 63 can be stirred under the action of the stirring rod 64, thereby improving the drying efficiency of p-nitroaniline. Mounting plates 10 are fixedly installed on the top and bottom of the placement box 2. The front side of the inner side of the mounting plate 10 is connected to the... Each right side is equipped with a locking block 11. A limiting rod 12 is fixedly installed on the outer side of the locking block 11. The outer end of the limiting rod 12 extends through to the outer side of the mounting plate 10 and slides with the mounting plate 10. Through the cooperation of the mounting plate 10, the locking block 11, and the limiting rod 12, when it is necessary to seal the placement box 2, the limiting rod 12 can be pushed inward. The movement of the limiting rod 12 inward causes the locking block 11 to move inward. The movement of the locking block 11 inward can limit the cover plate 7, preventing the heat inside the placement box 2 from escaping. A spring 13 is sleeved on the surface of the limiting rod 12. The outer end of the spring 13 and the mounting plate 10 are fixedly installed on the outer side of the mounting plate 10. The inner end of the mounting plate 10 is fixedly installed, and the inner end of the spring 13 and the outer side of the locking block 11 are fixedly installed. Through the setting of the spring 13, the locking block 11 can always bear the elastic force of the spring 13, so that the locking block 11 has a better effect on limiting the cover plate 7 and improves the stability of the cover plate 7 when it is limited. A movable plate 14 is provided on the outer side of the mounting plate 10. The inner side of the movable plate 14 and the outer end of the limiting rod 12 are fixedly installed. Through the setting of the movable plate 14, when the movable plate 14 is pulled outward, the limiting rod 12 can be moved outward at the same time, thereby improving the convenience of pulling the limiting rod 12.

[0034] Working principle: First, the nitroaniline to be dried can be placed inside the placement frame 63. Then, the cover plate 7 and the placement box 2 can be attached together. Then, the moving plate 14 can be pushed inward. The moving plate 14 moves inward, causing the limiting rod 12 and the locking block 11 to move inward. At this time, the locking block 11 will contact the cover plate 7, thereby limiting the cover plate 7. Next, the electric heating wire 51 can be energized. When the electric heating wire 51 reaches a sufficient temperature, the fan 53 can be started. The fan 53 can draw outside air into the heating box 4. Then, the hot air inside the heating box 4 will enter the conveying pipe 52, and the conveying pipe 52 will then... Heat is transferred to the interior of the placement box 2, and then the motor 62 can be started. The output of the motor 62 drives the rotating rod 61 and the placement frame 63 to rotate. The rotation of the placement frame 63 can accelerate the air flow inside the placement box 2. At this time, under the action of the stirring rod 64, the nitroaniline inside the placement frame 63 can be pushed, thereby accelerating the drying efficiency of the nitroaniline. At this time, the temperature sensor 8 can detect the temperature inside the placement box 2. The temperature detected by the temperature sensor 8 will be transmitted to the display 9, so that the temperature inside the placement box 2 can be known, preventing the nitroaniline from overheating and causing a chemical reaction. After the nitroaniline is dried, the cover plate 7 can be removed and taken out.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 dryer for the production of p-nitroaniline, comprising a frame (1), characterized in that: A placement box (2) is fixedly installed on the top of the frame (1). A connecting box (3) is fixedly installed on the left side of the placement box (2). A heating box (4) is fixedly installed on the left side of the connecting box (3). A heating component (5) for heating nitroaniline is provided inside the heating box (4). A rotating component (6) for stirring nitroaniline is provided inside the placement box (2). A cover plate (7) is provided on the right side of the placement box (2). Three sets of temperature sensors (8) are fixedly installed on the left side of the cover plate (7). A display (9) is fixedly installed on the right side of the cover plate (7). The output end of the temperature sensor (8) and the input end of the display (9) are electrically connected.

2. The dryer for producing p-nitroaniline according to claim 1, characterized in that: The heating assembly (5) includes an electric heating wire (51), the bottom of which is fixedly installed on the bottom of the inner wall of the heating box (4). Several sets of conveying pipes (52) are fixedly installed inside the heating box (4). The right end of the conveying pipe (52) extends into the interior of the placement box (2). A fan (53) is connected to the left side of the heating box (4). The bottom of the fan (53) is fixedly installed on the top of the frame (1).

3. The dryer for producing p-nitroaniline according to claim 1, characterized in that: The rotating assembly (6) includes a rotating rod (61), the bottom of which extends through to the bottom of the placement box (2) and is fixedly mounted with a motor (62). The top of the motor (62) and the bottom of the placement box (2) are fixedly mounted. The rotating rod (61) and the placement box (2) are rotatably mounted. Three sets of placement frames (63) are fixedly mounted on the surface of the rotating rod (61).

4. A dryer for producing p-nitroaniline according to claim 3, characterized in that: A stirring rod (64) is fixedly installed on the rear side of the inner wall of the placement box (2), and the bottom of the stirring rod (64) is in contact with the bottom of the inner wall of the placement frame (63).

5. A dryer for producing p-nitroaniline according to claim 1, characterized in that: The top and bottom of the placement box (2) are fixedly installed with mounting plates (10). The front and right sides of the inner side of the mounting plate (10) are provided with locking blocks (11). The outer side of the locking blocks (11) is fixedly installed with limiting rods (12). The outer end of the limiting rods (12) extends through to the outer side of the mounting plate (10) and slides with the mounting plate (10).

6. A dryer for producing p-nitroaniline according to claim 5, characterized in that: A spring (13) is sleeved on the surface of the limiting rod (12). The outer end of the spring (13) is fixedly installed on the inner end of the mounting plate (10), and the inner end of the spring (13) is fixedly installed on the outer side of the locking block (11).

7. A dryer for producing p-nitroaniline according to claim 5, characterized in that: A movable plate (14) is provided on the outer side of the mounting plate (10), and the inner side of the movable plate (14) and the outer end of the limiting rod (12) are fixedly installed.

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