Drying pot with nitrogen protection

Abstract

The utility model belongs to the technical field of drying equipment in industrial production, and relates to a drying pot with nitrogen protection, which comprises a supporting and fixing drying pot body, the drying pot body is provided with a drying pot feed port, and the axis of the drying pot feed port faces the vertical direction; one end, corresponding to the drying pot feed port, of the drying pot body is connected with a nitrogen supplementing pipeline, the other end of the nitrogen supplementing pipeline is connected with a nitrogen branch pipeline in a workshop, and the nitrogen supplementing pipeline is further connected with a vacuumizing pipeline; and the other end of the drying pot body is connected with a heat-conducting oil pipeline. According to the drying pot, air in the drying pot can be replaced with nitrogen before nylon slices are dried, moisture removed in the drying pot is continuously removed in the drying process, nitrogen is continuously supplemented, the purpose of rapidly drying the nylon slices is achieved, and the drying quality can be guaranteed.

Description

Technical Field

[0001] This utility model belongs to the technical field of drying equipment in industrial production, and relates to a drying pot with nitrogen protection. Background Technology

[0002] A drying pot is a common piece of equipment in industry, typically used for processing and production. Its working principle involves the high-temperature heat-conducting oil transferring heat to the wet material through the inner wall of the drying pot. This causes the moisture on the material's surface to evaporate continuously, creating a humidity difference between the surface and the interior of the material. Subsequently, moisture inside the material continuously diffuses and vaporizes towards the surface, gradually reducing the material's moisture content until the entire material is dried.

[0003] There are many types of drying pots available. Based on operating pressure, they can be divided into atmospheric pressure drying pots and vacuum drying pots; based on heating method, they can be divided into convection drying pots and conduction drying pots. During the drying process, the following problems often arise: if the drying time is short and the temperature is low, the moisture content of the material may not meet the standard, requiring re-drying and resulting in time loss. If the drying time is long and the temperature is high, the material inevitably reacts with the small amount of air inside the drying pot during the drying process, gradually turning yellow or black, thus affecting product quality.

[0004] Therefore, how to achieve drying effect in a short time without affecting the quality of the material to be dried has become an urgent problem to be solved in the drying field. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a drying pot with nitrogen protection. This drying pot can replace the air inside the pot with nitrogen before drying the nylon slices. During the drying process, the moisture removed from the pot is continuously removed and nitrogen is continuously replenished, achieving the purpose of rapidly drying the nylon slices while ensuring the drying quality.

[0006] According to the technical solution of this utility model: a drying pot with nitrogen protection, characterized in that: it includes a supporting and fixed drying pot body, the drying pot body is provided with a drying pot inlet, and the axis of the drying pot inlet is oriented in the vertical direction;

[0007] The drying pot body is connected to a nitrogen supply line at one end of the drying pot inlet, and the other end of the nitrogen supply line is connected to a nitrogen branch line in the workshop. The nitrogen supply line is also connected to a vacuum line.

[0008] The other end of the drying pot body is connected to a heat-conducting oil pipeline.

[0009] As a further improvement of this utility model, a nitrogen replenishment pneumatic valve is installed on the nitrogen replenishment pipeline, and a vacuum pumping pneumatic valve is installed on the vacuum pumping pipeline. The nitrogen replenishment pneumatic valve and the vacuum pumping valve are interlocked to realize the opening and closing of the drying pot body during the heat preservation stage.

[0010] As a further improvement of this utility model, the two ends of the drying pot body are respectively supported on the drying pot support, and the drying pot support is installed on the drying pot base.

[0011] As a further improvement of this utility model, the nitrogen replenishment pipeline is provided with a nitrogen replenishment pipeline manual valve, a nitrogen replenishment pipeline pressure gauge, a nitrogen replenishment pipeline pressure reducing valve, and a breather valve in sequence along the air intake direction.

[0012] As a further improvement of this utility model, the exhalation pressure of the breathing valve is 4 kPa.

[0013] As a further improvement of this utility model, the nitrogen replenishing pneumatic valve is a ball valve.

[0014] As a further improvement of this utility model, the drying pot body is inclined.

[0015] The technical advantages of this invention are as follows: The product design is reasonable and ingenious, addressing the problems encountered by current drying pots in the drying of nylon slices. It allows the drying pot to promptly remove moisture during the drying process, achieving rapid drying and improving efficiency. Furthermore, to address the issue of nylon slices easily turning yellow during drying, timely nitrogen supplementation effectively prevents contact between the nylon slices and air, thus avoiding quality problems during the drying process. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a schematic diagram illustrating the working principle of this utility model. Detailed Implementation

[0018] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. The described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0020] Figure 1 , 2 The components include: vacuum line 1, nitrogen supply line 2, nitrogen supply line manual valve 2-1, nitrogen supply line pressure gauge 2-2, nitrogen supply line pressure reducing valve 2-3, breather valve 2-4, nitrogen supply pneumatic valve 2-5, heat transfer oil line 3, drying pot body 4, drying pot base 5, drying pot support 6, drying pot feed inlet 7, etc.

[0021] like Figure 1 , 2 As shown, this utility model is a drying pot with nitrogen protection, including a drying pot body 4 that is supported and fixed at an inclination. The drying pot body 4 is provided with a drying pot inlet 7, and the axis of the drying pot inlet 7 is oriented in the vertical direction.

[0022] The drying pot body 4 is connected to a nitrogen supply line 2 at one end corresponding to the drying pot inlet 7. The other end of the nitrogen supply line 2 is connected to a nitrogen branch line in the workshop. The nitrogen supply line 2 is also connected to a vacuum line 2.

[0023] The other end of the drying pot body 4 is connected to the heat transfer oil pipeline 3.

[0024] A nitrogen replenishment pneumatic valve 2-5 is installed on the nitrogen replenishment pipeline 2. The nitrogen replenishment pneumatic valve 2-5 is a ball valve. A vacuum pumping pneumatic valve is installed on the vacuum pumping pipeline 2. The nitrogen replenishment pneumatic valve 2-5 and the vacuum pumping valve are interlocked to realize the opening and closing of the drying pot body 4 during the heat preservation stage.

[0025] The two ends of the drying pot body 4 are respectively supported on the drying pot support 6, which is installed on the drying pot base 5.

[0026] The nitrogen supply line 2 is equipped with a nitrogen supply line manual valve 2-1, a nitrogen supply line pressure gauge 2-2, a nitrogen supply line pressure reducing valve 2-3, and a breathing valve 2-4 in sequence along the air intake direction. The exhalation pressure of the breathing valve 2-4 is 4 kPa.

[0027] like Figure 1 , 2As shown, during operation, the present invention first opens the vacuum pneumatic valve, and the drying pot body 4 begins to be evacuated. Once the target pressure is reached, it is maintained. At this time, the hot oil inlet and outlet manual valves of the drying pot body 4 are adjusted according to the PID control, and the drying pot body 4 begins to heat up. After reaching the set temperature, the hot oil inlet and outlet valves of the drying pot body 4 are closed, entering the heat preservation stage. During this time, the vacuum pneumatic valve automatically closes, and the nitrogen replenishment pneumatic valves 2-5 automatically open, starting to replenish nitrogen into the drying pot body 4. Then, during the heat preservation stage, the vacuum pneumatic valve and the nitrogen replenishment pneumatic valves 2-5 will alternately open and close several times, continuously extracting excess moisture while simultaneously replenishing nitrogen into the drying pot 4 to isolate it from air. After the heat preservation time of the drying pot 4 reaches the set value, the hot oil inlet and outlet valves close, and the cold oil inlet and outlet valves open, starting to cool the drying pot 4. After the cooling time is reached, the cold oil inlet and outlet valves close, and the material begins to be discharged.

[0028] When the drying pot is not in use, manually stop the program. At this time, the nitrogen replenishment pneumatic valve 2-5 and the vacuum valve are both closed.

[0029] like Figure 2 As shown, this utility model provides a drying pot device with nitrogen protection. By intermittently evacuating and replenishing nitrogen, the drying pot can quickly remove moisture during the drying of nylon slices, thus improving drying efficiency. Simultaneously, by continuously replenishing nitrogen into the drying pot 4 during the drying process, it also prevents the nylon slices from contacting air, which could cause quality problems, thus meeting the requirements of both production efficiency and production quality.

[0030] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to examples, 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 and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A drying pan with nitrogen protection, characterized in that: Includes a fixed drying pot body (4), the drying pot body (4) is provided with a drying pot inlet (7), the axis of the drying pot inlet (7) is oriented in the vertical direction; The drying pot body (4) is connected to a nitrogen supply line (2) at one end corresponding to the drying pot inlet (7), and the nitrogen supply line (2) is connected to a nitrogen branch line in the workshop at the other end. The nitrogen supply line (2) is also connected to a vacuum line (1). The other end of the drying pot body (4) is connected to the heat-conducting oil pipeline (3).

2. The drying pan with nitrogen protection according to claim 1, characterized in that: A nitrogen-supplementing pneumatic valve (2-5) is installed on the nitrogen-supplementing pipeline (2), and a vacuum-evacuation pneumatic valve is installed on the vacuum-evacuation pipeline (1). The nitrogen-supplementing pneumatic valve (2-5) and the vacuum-evacuation pneumatic valve are interlocked to achieve one opening and one closing during the heat preservation stage of the drying pot body (4).

3. The drying pan with nitrogen protection according to claim 1, characterized in that: The two ends of the drying pot body (4) are respectively supported on the drying pot support (6), and the drying pot support (6) is installed on the drying pot base (5).

4. The drying pan with nitrogen protection according to claim 1, characterized in that: The nitrogen replenishment pipeline (2) is provided with a nitrogen replenishment pipeline hand valve (2-1), a nitrogen replenishment pipeline pressure gauge (2-2), a nitrogen replenishment pipeline pressure reducing valve (2-3), and a breather valve (2-4) in sequence along the air intake direction.

5. The drying pan with nitrogen protection according to claim 4, characterized in that: The exhalation pressure of the breathing valve (2-4) is 4 kPa.

6. The drying pan with nitrogen protection as claimed in claim 2, characterized in that: The nitrogen replenishment pneumatic valve (2-5) is a ball valve.

7. The drying pan with nitrogen protection according to claim 1, characterized in that: The drying pot body (4) is set at an angle.

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