A circulating drying device for producing sodium p-aminosalicylate

Abstract

The present invention is applicable to the technical field of chemical production equipment, and in particular to a circulating drying device for the production of sodium para-aminosalicylate, the device comprising: a base, a frame installed on the base, a drying box rotatably installed on the frame, a discharge box arranged on the periphery of the drying box, multiple groups of dynamic jet components installed at the bottom of the drying box, the dynamic jet components connected to eddy current heating components, all eddy current heating components connected through a guide box, an airflow circulation mechanism installed on the base, and the air inlet and air outlet of the airflow circulation mechanism are respectively connected to the drying box and the guide box through an air guide pipe. The present invention can achieve uniform mixing and uniform heating of materials by setting multiple groups of dynamic jet components, and can assist in discharging, and the eddy current heating components can dynamically control the temperature of the heating airflow in each area according to the real-time state of the material, thereby achieving precise control of the heating area, improving the stability of drying, and ensuring the stable quality of the product.

Description

Technical Field

[0001] The invention belongs to the technical field of chemical production equipment, and in particular relates to a circulating drying device for producing sodium p-aminosalicylate. Background Art

[0002] Chemical drying equipment is a device specially used to reduce the moisture content in chemical products or remove surface moisture. It is widely used in various material handling processes in the chemical industry. This type of equipment provides the necessary heat through heat conduction, heat convection or microwaves to promote the evaporation of moisture in the material. The design and operating parameters of chemical drying equipment will be adjusted according to factors such as the nature of the material to be dried, the initial moisture content, the required final humidity and the scale of production.

[0003] In current drying devices, hot air is usually used for drying. However, due to the unstable temperature of the hot air flow, the drying effect at various positions during the drying process is uneven, which affects the uniformity of the moisture content of the product and causes unstable product quality. Summary of the invention

[0004] The object of the present invention is to provide a circulating drying device for the production of sodium p-aminosalicylate, aiming to solve the problem that the temperature of the hot air flow is unstable, resulting in uneven drying effects at various positions during the drying process, affecting the uniformity of the water content of the product and causing unstable product quality.

[0005] The present invention is achieved by a circulating drying device for producing sodium p-aminosalicylate, the device comprising:

[0006] A base is provided with a frame installed on the base, a drying box is rotatably installed on the frame, a discharge box is arranged outside the drying box, a plurality of groups of dynamic jet components are installed at the bottom of the drying box, the dynamic jet components are connected with eddy current heating components, all eddy current heating components are connected through a guide box, an air flow circulation mechanism is installed on the base, and the air inlet and air outlet of the air flow circulation mechanism are connected with the drying box and the guide box respectively through an air guide pipe.

[0007] Preferably, the dynamic jet assembly includes an air outlet nozzle, which is fixedly connected to a guide ball head, a plurality of mounting holes are provided at the bottom of the drying box, a group of dynamic jet assemblies are provided in each mounting hole, a fixed bracket is fixedly provided in the mounting hole, the guide ball head is rotatably installed in the fixed bracket, the end of the guide ball head away from the air outlet nozzle is connected to a heating tube, a metal wire is fixedly provided in the heating tube, the eddy current heating assembly includes an eddy current coil, the eddy current coil is arranged on the periphery of the heating tube, a connecting seat is also slidably provided on the heating tube, a plurality of groups of universal ball heads are rotatably connected to the connecting seat, a magnetic block is fixedly connected to the universal ball head, a telescopic cylinder is slidably provided on the periphery of the magnetic block, a group of electromagnets are fixedly provided at the bottom of the telescopic cylinder, the telescopic cylinder is rotatably connected to the bottom of the drying box, the heating tube is connected to the guide box, the air outlet nozzle and the mounting hole are connected by an isolation membrane, a thermal imaging device is provided in the drying box, and the thermal imaging device is used to detect the temperature of the material.

[0008] Preferably, the air circulation mechanism includes a fan, which is fixedly mounted on a base, an air outlet of the fan is connected to a guide box via a rotating joint, an air inlet of the fan is connected to a drying box filled with desiccant, the drying box is connected to the top of the drying box, and a filter plate is provided in the drying box.

[0009] Preferably, the drying box is connected to the frame via a bearing, an inner gear ring is provided on the drying box, a motor is fixedly provided on the frame, a gear is mounted on the output shaft of the motor, the gear is meshed with the inner gear ring, the bottom of the discharge box is an inclined slope, the discharge box and the drying box are connected via a discharge chute, the bottom of the drying box is a hollow frustum structure, and a discharge valve is provided at the lowest point of the discharge box.

[0010] Preferably, the drying box is connected to the air circulation mechanism via a control valve, and a humidity sensor is provided at the control valve.

[0011] Preferably, the air inlet of the air circulation mechanism is provided with an air inlet valve.

[0012] Preferably, the drying ovens are provided in multiple groups.

[0013] The circulating drying device for the production of sodium para-aminosalicylate provided by the present invention can achieve uniform mixing and uniform heating of materials and assist in discharging by setting multiple groups of dynamic jet components. The eddy current heating component can dynamically control the temperature of the heating air flow in each area according to the real-time state of the material, thereby achieving precise control of the heating area, improving the stability of drying, and ensuring the stability of product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the overall structure from a first perspective of a circulating drying device for producing sodium p-aminosalicylate provided in an embodiment of the present invention;

[0015] Figure 2 A schematic diagram of the overall structure from a second perspective of a circulating drying device for producing sodium p-aminosalicylate provided in an embodiment of the present invention;

[0016] Figure 3 A schematic diagram of the internal structure from a first perspective of a circulating drying device for producing sodium p-aminosalicylate provided in an embodiment of the present invention;

[0017] Figure 4 A schematic diagram of the internal structure from a second perspective of a circulating drying device for producing sodium p-aminosalicylate provided in an embodiment of the present invention;

[0018] Figure 5 A schematic diagram of the structure of a dynamic jet injection assembly provided in an embodiment of the present invention;

[0019] Figure 6 A schematic diagram of the internal structure of a telescopic cylinder provided in an embodiment of the present invention;

[0020] Figure 7 for Figure 3 A partial enlarged view of the middle A;

[0021] Figure 8 for Figure 4 A partial enlarged view of point B in the middle;

[0022] Fig. 9 A schematic diagram of the installation of an eddy current coil provided in an embodiment of the present invention.

[0023] In the attached figure: 1. base; 2. drying box; 3. discharge box; 4. air guide pipe; 5. drying box; 6. frame; 7. discharge valve; 8. fan; 9. first induction coil; 10. second induction coil; 11. guide box; 12. eddy current coil; 13. motor; 14. gear; 15. discharge chute; 16. filter plate; 17. universal ball head; 18. telescopic cylinder; 19. electromagnet; 21. magnetic block; 22. connecting seat; 23. air outlet nozzle; 24. isolation membrane; 25. fixing bracket; 26. guide ball head; 27. heating tube; 28. metal wire. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0026] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, it is a structural diagram of a circulating drying device for producing sodium p-aminosalicylate provided by an embodiment of the present invention, and the device comprises:

[0027] A base 1 is provided, on which a frame 6 is installed, on which a drying box 2 is rotatably installed, a discharge box 3 is arranged outside the drying box 2, a plurality of groups of dynamic jet components are installed at the bottom of the drying box 2, the dynamic jet components are connected with eddy current heating components, all eddy current heating components are connected through a guide box 11, an air circulation mechanism is installed on the base 1, and an air inlet and an air outlet of the air circulation mechanism are connected with the drying box 2 and the guide box 11 respectively through an air guide pipe 4.

[0028] In an embodiment of the present invention, when drying, the material is introduced into a drying box 2, a feed port is provided on the drying box 2, a top cover is provided on the feed port, a filter plate 16 is provided in the drying box 2, the feed port extends to below the filter plate 16 through a material guide tube, and the material reaches the bottom of the drying box 2. At this time, the airflow is driven by the airflow circulation mechanism to spray from the dynamic jet component into the drying box 2, and the airflow is directly in contact with the material, so that the materials are filled with gas. At this time, the material has a certain fluidity, that is, a fluidized bed is formed. The logistics heating component can independently control the temperature of the gas sprayed from each dynamic jet component to achieve precise control of the temperature of each heating area, thereby achieving uniform heating of the material, avoiding the situation where the material has different water content due to uneven heating, and ensuring the stability of the product.

[0029] like Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9As shown, as a preferred embodiment of the present invention, the dynamic jet assembly includes an air outlet nozzle 23, and a guide ball head 26 is fixedly connected to the air outlet nozzle 23. A plurality of mounting holes are provided at the bottom of the drying box 2, and a group of dynamic jet assemblies are provided in each mounting hole. A fixed bracket 25 is fixedly provided in the mounting hole, and the guide ball head 26 is rotatably installed in the fixed bracket 25. The end of the guide ball head 26 away from the air outlet nozzle 23 is connected to a heating pipe 27, and a metal wire 28 is fixedly provided in the heating pipe 27. The eddy current heating assembly includes an eddy current coil 12, and the eddy current coil 12 It is arranged on the periphery of the heating tube 27, and a connecting seat 22 is also slidably sleeved on the heating tube 27. A plurality of groups of universal ball heads 17 are rotatably connected to the connecting seat 22. A magnetic block 21 is fixedly connected to the universal ball head 17. A telescopic cylinder 18 is slidably sleeved on the periphery of the magnetic block 21. A group of electromagnets 19 are fixedly arranged at the bottom of the telescopic cylinder 18. The telescopic cylinder 18 is rotatably connected to the bottom of the drying box 2. The heating tube 27 is connected to the guide box 11. The air outlet nozzle 23 is connected to the mounting hole through an isolation membrane 24. A thermal imaging device is arranged in the drying box 2, and the thermal imaging device is used to detect the temperature of the material.

[0030] In the embodiment of the present invention, when heating is performed, the airflow passes through the guide box 11 and evenly enters each heating tube 27. At this time, the eddy current coil 12 is energized, and the internal metal wire 28 is heated by the eddy current coil 12. When the gas in the heating tube 27 passes through the metal wire 28, it will contact with it and perform heat exchange, thereby achieving heating of the gas. The heated gas can directly enter the drying box 2 through the gas outlet nozzle 23. The gas and the material act to form a fluidized bed. At this time, the gas completely wraps the material, and the material and the gas perform heat exchange. After the material is heated, the moisture inside the material will evaporate and enter the gas. , the gas enters the air duct 4 from the top of the drying box 2, and then returns to the air outlet nozzle 23 again. In this process, the thermal imaging device is used to collect images of the material to obtain a thermal imaging image, and the temperature of each position of the current material is determined based on the thermal imaging image. The dynamic jet components corresponding to each area in the thermal imaging image are determined according to the position of each dynamic jet component. According to the preset heating temperature, it is determined whether the temperature of the heating area corresponding to each dynamic jet component meets the conditions, and the difference ΔT between the actual temperature and the preset temperature is calculated. According to ΔT, it is determined to change the current of the eddy current coil 12, and the internal metal is controlled by changing the current of the eddy current coil 12. The real-time temperature of the wire is measured, so that the temperature of the heating area corresponding to each dynamic jet component is stable. When ventilation heating is performed, the center of the air outlet nozzle 23 is used as the origin, and the distance between two adjacent air outlet nozzles 23 is used as the diameter to determine the heating area corresponding to each air outlet nozzle 23. According to the recognition result of the thermal imaging image, the air outlet nozzle 23 is controlled to tilt toward the area with lower temperature, so as to heat the low-temperature area. During the whole heating process, the temperature in the heating area is guaranteed to be stable. Each group of connecting seats 22 is connected to three groups of universal ball heads 17 and telescopic cylinders 18. When the air outlet nozzle 23 is controlled to deflect, the electromagnet 1 in the telescopic cylinder 18 9 is energized, thereby repelling the magnetic block 21 in the telescopic cylinder 18, and the magnetic block 21 drives the universal ball head 17 to move outward. By changing the current of the three groups of electromagnets 19 to change the magnetic field strength, due to the different displacements of the three groups of universal ball heads 17, the entire connecting seat 22 will be driven to move to one side, and the telescopic cylinder 18 is rotatably connected to the drying box 2. The telescopic cylinder 18 can swing up and down along the vertical plane. Then, when the connecting seat 22 is offset, it will drive the guide ball head 26 to rotate relative to the fixed bracket 25, and the air outlet nozzle 23 will also swing to a lower temperature area. In this process, the isolation membrane 24 can be set to prevent materials from entering the gap.

[0031] like Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9As shown, as a preferred embodiment of the present invention, the air circulation mechanism includes a fan 8, which is fixedly mounted on a base 1, an air outlet of the fan 8 is connected to a guide box 11 via a rotating joint, an air inlet of the fan 8 is connected to a drying box 5, the drying box 5 is filled with a desiccant, the drying box 5 is connected to the top of a drying box 2, and a filter plate 16 is provided in the drying box 2.

[0032] In an embodiment of the present invention, when controlling the air flow circulation, the fan 8 is started, and the fan 8 conveys the gas to the guide box 11, and the guide box 11 guides the gas to each heating tube 27. After heating, the gas enters the drying box 2. Since the gas will impact the material, the fine particles in the material will move with the gas. By setting the filter plate 16, the waste of material can be avoided. The air guide pipe 4 is made of hard material, and the air guide pipe 4 is connected to the drying box 2 by a rotating connection. When the drying box 2 rotates, the position of the air guide pipe 4 is not changed. The air guide pipe 4 guides the airflow to the drying box 5, and the moisture in the gas is absorbed by the desiccant and finally returns to the fan 8, thereby realizing the circulation of the gas.

[0033] like Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, as a preferred embodiment of the present invention, the drying box 2 is connected to the frame 6 through a bearing, the drying box 2 is provided with an inner gear ring, the frame 6 is fixedly provided with a motor 13, a gear 14 is mounted on the output shaft of the motor 13, the gear 14 is meshed with the inner gear ring, the bottom of the discharge box 3 is an inclined slope, the discharge box 3 and the drying box 2 are connected through a discharge chute 15, the bottom of the drying box 2 is a hollow truncated cone structure, and a discharge valve 7 is provided at the lowest point of the discharge box 3; the drying box 2 is connected to the air circulation mechanism through a control valve, and a humidity sensor is provided at the control valve; the air inlet of the air circulation mechanism is provided with an air inlet valve.

[0034] In the embodiment of the present invention, a second induction coil 10 is provided on the guide box 11, and a first induction coil 9 is provided on the fan 8. The first induction coil 9 is used to supply power to the electromagnet 19 and the eddy current coil 12 through the second induction coil 10. In the drying process, since the particle size of the material is uneven, the material will show a certain degree of stratification trend after being heated for a period of time. In order to ensure the uniformity of the material, the motor 13 is started at intervals or when it is detected that the temperature difference of the material is greater than a preset value, the motor 13 is controlled to intermittently rotate forward and reverse to drive the material to mix in the drying box 2. In this process, the air output of the air outlet nozzle 23 is increased to promote the redistribution of the material. The humidity sensor is used to determine whether the material is dried. After the drying is completed, the humidity sensor is used to determine whether the material is dried. When the material is discharged, the motor 13 rotates rapidly in one direction, and the centrifugal force is used to throw the material out. Under the action of centrifugal force, the material will slide to the top along the inner wall of the drying box 2, and enter the discharge box 3 from the discharge chute 15. Since the bottom of the discharge box 3 is inclined, the material will be concentrated at the lowest point. By opening the discharge valve 7, the material will slide out to achieve discharge. In the process of discharging, the air outlet nozzle 23 is controlled to spray to the outside of the drying box 2. The control valve is set at the air outlet of the drying box 2, and the air inlet valve is set at the air inlet of the fan 8. The external air is introduced through the air inlet valve, and the connection between the fan 8 and the drying box 5 is disconnected. The internal material is blown out by the external gas, and the gas is discharged through the discharge valve 7 to achieve the purpose of auxiliary discharge.

[0035] In this embodiment, the drying boxes 5 are provided in multiple groups.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A circulating drying device for producing sodium p-aminosalicylate, characterized in that: The device comprises: A base (1) is provided on the base (1), a frame (6) is rotatably provided on the frame (6), a drying box (2) is provided on the periphery of the drying box (2), a plurality of groups of dynamic jet components are provided on the bottom of the drying box (2), the dynamic jet components are connected to eddy current heating components, all eddy current heating components are connected via a guide box (11), an air circulation mechanism is provided on the base (1), an air inlet and an air outlet of the air circulation mechanism are respectively connected to the drying box (2) and the guide box (11) via an air guide pipe (4); The dynamic jet assembly comprises an air outlet nozzle (23), to which a guide ball nozzle (26) is fixedly connected; a plurality of mounting holes are provided at the bottom of the drying box (2), a group of dynamic jet assemblies is provided in each mounting hole, a fixed bracket (25) is fixedly provided in the mounting hole, the guide ball nozzle (26) is rotatably installed in the fixed bracket (25), one end of the guide ball nozzle (26) away from the air outlet nozzle (23) is connected to a heating tube (27), a metal wire (28) is fixedly provided in the heating tube (27), and the eddy current heating assembly comprises an eddy current coil (12), which is arranged on the periphery of the heating tube (27). The heating tube (27) is also provided with a connecting seat (22) on a sliding sleeve, and a plurality of universal ball heads (17) are rotatably connected to the connecting seat (22), and a magnetic block (21) is fixedly connected to the universal ball head (17), and a telescopic cylinder (18) is provided on the sliding sleeve of the outer periphery of the magnetic block (21), and a group of electromagnets (19) are fixedly provided at the bottom of the telescopic cylinder (18), and the telescopic cylinder (18) is rotatably connected to the bottom of the drying box (2), the heating tube (27) is connected to the guide box (11), and the air outlet nozzle (23) is connected to the mounting hole through an isolation membrane (24), and a thermal imaging device is provided in the drying box (2), and the thermal imaging device is used to detect the temperature of the material; The drying box (2) and the frame (6) are connected via a bearing, an inner gear ring is provided on the drying box (2), a motor (13) is fixedly provided on the frame (6), a gear (14) is installed on the output shaft of the motor (13), the gear (14) is meshed with the inner gear ring, the bottom of the discharge box (3) is an inclined slope, the discharge box (3) and the drying box (2) are connected via a discharge trough (15), the bottom of the drying box (2) is a hollow truncated cone structure, and a discharge valve (7) is provided at the lowest point of the discharge box (3).

2. The circulating drying device for producing sodium p-aminosalicylate according to claim 1, characterized in that: The air circulation mechanism comprises a fan (8), the fan (8) being fixedly mounted on a base (1), an air outlet of the fan (8) being connected to a guide box (11) via a rotating joint, an air inlet of the fan (8) being connected to a drying box (5), the drying box (5) being filled with a desiccant, the drying box (5) being connected to the top of a drying box (2), and a filter plate (16) being arranged in the drying box (2).

3. The circulating drying device for producing sodium p-aminosalicylate according to claim 1, characterized in that: The drying box (2) is connected to the air circulation mechanism via a control valve, and a humidity sensor is provided at the control valve.

4. The circulating drying device for producing sodium p-aminosalicylate according to claim 3, characterized in that: The air inlet of the air circulation mechanism is provided with an air inlet valve.

5. The circulating drying device for producing sodium p-aminosalicylate according to claim 2, characterized in that: The drying boxes (5) are provided in multiple groups.

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