An oven cooling explosion-proof device

Abstract

The utility model discloses a kind of oven cooling explosion-proof devices, including the drying device being arranged above or below pole piece and two air nozzles, two the air nozzle is respectively arranged in the front side and rear side of the drying device along the direction of pole piece's running, the air nozzle includes air bellow, air knife and vortex tube assembly, the air knife is horizontally connected to the inside end of the air bellow, the vortex tube assembly is installed in the end of the air knife, the vortex tube assembly is used to access compressed air and generate cold gas whirl and input to air knife again, the air knife is used to form gas film isolation NMP steam above pole piece. The oven cooling explosion-proof device of the utility model is suitable for coating oven and other drying equipment, for preventing pole piece surface condensation, reducing local high temperature, avoiding the explosion risk caused by NMP aggregation, while improving drying efficiency and safety.

Description

Technical Field

[0001] This utility model relates to the field of oven technology, specifically to an oven cooling explosion-proof device. Background Technology

[0002] In the production process of coating ovens, high-power drying devices (such as laser heating) are usually used to improve drying efficiency. However, this high-speed drying method can easily lead to the rapid evaporation and condensation of solvent on the electrode surface onto the dryer, forming agglomerates. The temperature of the dryer can rise continuously, potentially causing an explosion. Furthermore, in the positive electrode environment, organic solvents such as NMP (N-methylpyrrolidone) tend to accumulate. If exposed to localized high temperatures (such as during tape breakage or material sticking to the drying device), this can also lead to an explosion.

[0003] In existing technologies, ovens typically lack effective cooling and explosion-proof measures. Relying solely on conventional ventilation is insufficient to quickly reduce localized high temperatures and effectively prevent condensation.

[0004] Therefore, there is a need to provide an explosion-proof cooling device for ovens to solve the above problems. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, this utility model provides an oven cooling explosion-proof device, which is suitable for drying equipment such as coating ovens. It is used to prevent condensation on the electrode surface, reduce local high temperature, avoid the risk of explosion caused by NMP accumulation, and improve drying efficiency and safety.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] An explosion-proof cooling device for an oven includes a drying device disposed above or below an electrode and two air nozzles. The two air nozzles are respectively disposed on the front and rear sides of the drying device along the belt direction of the electrode. Each air nozzle includes an air box, an air knife, and a vortex tube assembly. The air knife is horizontally connected to the inner end of the air box, and the vortex tube assembly is installed at the end of the air knife. The vortex tube assembly is used to receive compressed air and generate a cold cyclone before inputting it to the air knife. The air knife is used to form an air film above the electrode to isolate NMP vapor.

[0008] As a further improvement to the above technical solution, the upper end of the air box is provided with an air inlet, the side end of the air box is provided with an air outlet, and the air knife is connected to the air outlet.

[0009] As a further improvement to the above technical solution, the air knife includes an air knife housing, a first air deflector and a second air deflector. A first air inlet is provided on one side of the air knife housing, which is connected to the air box. The first air deflector is connected to the first air inlet, and the second air deflector is connected to the other side of the air knife housing. The air guiding directions of the first air deflector and the second air deflector are the same.

[0010] As a further improvement to the above technical solution, both the first and second air deflectors are composed of two symmetrical and spaced inclined guide plates, and the inclination angle of the inclined guide plate of the second air deflector is smaller than the inclination angle of the inclined guide plate of the first air deflector.

[0011] As a further improvement to the above technical solution, a second air inlet is provided at the end of the air knife housing, and the vortex tube assembly is connected to the second air inlet.

[0012] As a further improvement to the above technical solution, the vortex tube assembly includes a nozzle, a vortex tube, a cold end tube, and a hot end tube. The nozzle is connected to the vortex tube, and a vortex chamber is provided inside the vortex tube. One end of the vortex tube is provided with a first air outlet, and the other end is provided with a second air outlet. The cold end tube is connected to the first air outlet, the cold end tube is connected to the second air inlet, and the hot end tube is connected to the second air outlet.

[0013] As a further improvement to the above technical solution, the nozzle is connected to a pressure regulating valve, which is used to control the flow rate and pressure of the compressed gas.

[0014] As a further improvement to the above technical solution, a hot end control valve is connected to the outer end of the hot end tube. The hot end control valve is used to connect to the oven and control the output of hot airflow.

[0015] As a further improvement to the above technical solution, a temperature sensor is installed at the lower end of the drying device, and the temperature sensor is used to monitor the temperature in real time.

[0016] The beneficial effects of this utility model are:

[0017] This invention utilizes a drying device and symmetrical air nozzles on both sides above the electrode to generate a cold airflow through a vortex tube assembly, which forms an air film via an air knife. This effectively isolates NMP vapor and prevents it from condensing on the electrode surface, ensuring the drying effect while reducing ambient temperature and explosion risk. It achieves a dual improvement in drying efficiency and production safety, combining practicality and safety advantages. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the structure of the oven cooling explosion-proof device of this utility model from one perspective;

[0020] Figure 2 This is a schematic diagram of the structure of the oven cooling explosion-proof device of this utility model from another perspective;

[0021] Figure 3 This is a cross-sectional structural diagram of the explosion-proof cooling device for the oven of this utility model;

[0022] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0023] Figure 5 This is a schematic diagram of the vortex tube assembly of this utility model.

[0024] Reference numerals: 1. Drying device; 2. Nozzle; 3. Air box; 31. Air inlet; 32. Air outlet; 4. Air knife; 41. Air knife housing; 411. First air inlet; 412. Second air inlet; 42. First folding air nozzle; 43. Second folding air nozzle; 5. Vortex tube assembly; 51. Nozzle; 52. Vortex tube; 521. First air outlet; 522. Second air outlet; 53. Cold end tube; 54. Hot end tube; 6. Electrode. Detailed Implementation

[0025] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / connections involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. For example, fixed connections / fixed installations can use screw connections, bolt connections, pin connections, key connections, adhesive connections, mortise and tenon connections, welding, riveting, etc., as needed. For detachable connections, screw connections, bolt connections, threaded connections, snap-fit ​​connections, mortise and tenon connections, Velcro connections, etc., can be used as needed. The various technical features in this utility model can be combined interactively without contradicting each other.

[0026] Reference Figures 1 to 5An explosion-proof cooling device for an oven includes a drying device 1 positioned above or below an electrode 6 and two symmetrically arranged air nozzles 2. The two air nozzles 2 are respectively positioned on the front and rear sides of the drying device 1 along the belt direction of the electrode 6, forming an effective collaborative working system to ensure that the drying process inside the oven is both efficient and safe. The air nozzle 2 includes an air box 3, an air knife 4, and a vortex tube assembly 5. The air box 3 serves as a storage and distribution unit for airflow, providing a stable airflow source for the entire air nozzle 2. The air knife 4 is horizontally connected to the inner end of the air box 3. The vortex tube assembly 5 is installed at the end of the air knife 4. The vortex tube assembly 5 utilizes vortex technology to generate a strong and stable cold air vortex by introducing compressed gas, which is then input into the air knife. In actual operation, the cold airflow generated by the vortex tube assembly 5 is guided to the air knife 4, thereby forming a dense gas film above the electrode 6. This gas film not only effectively isolates NMP vapor and prevents it from condensing on the surface of the electrode 6, but also reduces the temperature of the electrode 6 and its surrounding environment to a certain extent, further reducing the risk of explosion. By adopting the structural design of this utility model, the oven cooling explosion-proof device greatly improves the safety of the production process while ensuring drying efficiency.

[0027] Reference Figure 3 In an embodiment of this utility model, the upper end of the bellows 3 is provided with an air inlet 31, which is used to access external airflow and provide a continuous gas input to the bellows 3; at the same time, the side end of the bellows 3 is provided with an air outlet 32, and the air knife 4 is securely connected to the air outlet 32, ensuring that the airflow can be smoothly and efficiently transmitted from the bellows 3 to the air knife 4.

[0028] Reference Figure 3 , Figure 4 In an embodiment of this utility model, the air knife 4 includes an air knife housing 41, a first deflector nozzle 42, and a second deflector nozzle 43. A first air inlet 411 is provided on one side of the air knife housing 41, and the first air inlet 411 is in close communication with the air outlet 32 ​​of the air box 3, thereby ensuring that the airflow inside the air box 3 can smoothly and unobstructedly enter the interior of the air knife housing 41. The first deflector nozzle 42 is connected to the first air inlet 411, and its function is to initially guide and shape the incoming airflow. The second deflector nozzle 43 is connected to the other side of the air knife housing 41, working in conjunction with the first deflector nozzle 42. The air guiding directions of the first deflector nozzle 42 and the second deflector nozzle 43 are consistent, ensuring that the airflow can form a uniform and stable air film when passing through the air knife 4, thereby achieving ideal cooling and explosion-proof effects.

[0029] Specifically, both the first deflector 42 and the second deflector 43 are composed of two symmetrical and spaced-apart inclined guide plates, forming a figure-eight shaped flow channel. The inclination angle of the inclined guide plate of the second deflector 43 is smaller than that of the inclined guide plate of the first deflector 42. The first deflector 42 is used to initially and significantly change the airflow direction, while the second deflector 43 is used to further adjust the airflow rate, reduce airflow resistance, and reduce energy loss.

[0030] Specifically, the end of the air knife housing 41 is provided with a second air inlet 412, which provides an access point for the vortex tube assembly 5, so that the vortex tube assembly 5 can be stably connected to the second air inlet 412. The cold airflow generated by the vortex tube assembly 5 can directly and efficiently enter the interior of the air knife housing 41, mix with the airflow in the air box 3 and act together on the surface of the electrode 6, thereby significantly improving the cooling and explosion-proof effect.

[0031] Reference Figure 5 In an embodiment of this utility model, the vortex tube assembly 5 includes a nozzle 51, a vortex tube 52, a cold end tube 53, and a hot end tube 54. The nozzle 51 is tightly connected to the vortex tube 52 and serves as the inlet for compressed gas to enter the vortex tube 52. A vortex chamber 55 is provided inside the vortex tube 52, which is the core area where gas energy exchange occurs and cold and hot airflows are formed. One end of the vortex tube 52 is provided with a first air outlet 521, and the other end is provided with a second air outlet 522. The cold end tube 53 is tightly connected to the first air outlet 521 and is used to discharge cold airflow. Furthermore, the cold end tube 53 is connected to the second air inlet 412 on the air knife housing 41, allowing cold airflow to smoothly enter the interior of the air knife 4. The hot end tube 54 is connected to the second air outlet 522 and is responsible for discharging hot airflow.

[0032] Specifically, the nozzle 51 is connected to a pressure regulating valve. By adjusting the pressure regulating valve, the operator can flexibly adjust the flow rate and pressure of the compressed gas according to actual needs, thereby ensuring that the vortex tube assembly 5 can work stably and efficiently.

[0033] Specifically, a hot end control valve is connected to the outer end of the hot end pipe 54. The hot end control valve is used to connect to the oven. By adjusting the hot end control valve, the operator can control the output of hot air according to actual needs, while avoiding energy waste and ensuring that the temperature environment inside the oven is in the optimal state.

[0034] Reference Figure 1In an embodiment of this utility model, a temperature sensor is installed at the lower end of the drying device 1. The temperature sensor can monitor the temperature change inside the oven in real time and accurately, and transmit the data to the control system. Based on the received temperature data, the control system can adjust the working state of the drying device 1 and the output of hot and cold airflow of the vortex tube assembly 5 in a timely manner, thereby ensuring that the temperature inside the oven is always kept within a safe and efficient range.

[0035] When the oven cooling explosion-proof device of this utility model is working, the compressed gas enters the nozzle 51 of the vortex tube assembly 5 after the flow and pressure are regulated by the pressure regulating valve. After expansion and acceleration, it enters the vortex chamber 55 tangentially. A high-speed rotating vortex is formed in the vortex chamber 55, so that the gas in the vortex tube 52 has a lower temperature in the center to form a cold airflow and a higher temperature in the outer part to form a hot airflow. The hot airflow is discharged through the hot end tube 54 and the hot end control valve. The cold airflow enters the air knife 4 through the conical cold end tube 53. At the same time, the airflow is introduced into the air box 3 through the air inlet 31. After being guided and shaped by the first folding air nozzle 42 and the second folding air nozzle 43 of the air knife 4, it forms a uniform gas film with the cold airflow above the electrode plate 6, which isolates NMP vapor and reduces the temperature. The temperature sensor at the lower end of the drying device 1 monitors the temperature in real time so that the control system can adjust the working status of each component in a timely manner to ensure that the oven drying is efficient and safe and explosion-proof.

[0036] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. An explosion-proof cooling device for an oven, characterized in that: The device includes a drying unit positioned above or below the electrode and two air nozzles. The two air nozzles are respectively positioned on the front and rear sides of the drying unit along the belt direction of the electrode. Each air nozzle includes an air box, an air knife, and a vortex tube assembly. The air knife is horizontally connected to the inner end of the air box, and the vortex tube assembly is installed at the end of the air knife. The vortex tube assembly is used to receive compressed air and generate a cold cyclone before inputting it to the air knife. The air knife is used to form an air film above the electrode to isolate NMP vapor.

2. The oven cooling explosion-proof device according to claim 1, characterized in that: The upper end of the air box is provided with an air inlet, the side end of the air box is provided with an air outlet, and the air knife is connected to the air outlet.

3. The oven cooling explosion-proof device according to claim 1, characterized in that: The air knife includes an air knife housing, a first air deflector, and a second air deflector. A first air inlet is provided on one side of the air knife housing, which is connected to the air box. The first air deflector is connected to the first air inlet, and the second air deflector is connected to the other side of the air knife housing. The air guiding directions of the first air deflector and the second air deflector are the same.

4. The oven cooling explosion-proof device according to claim 3, characterized in that: Both the first and second air deflectors consist of two symmetrical and spaced-apart inclined guide plates, and the inclination angle of the inclined guide plate of the second air deflector is smaller than that of the inclined guide plate of the first air deflector.

5. The oven cooling explosion-proof device according to claim 3, characterized in that: The end of the air knife housing is provided with a second air inlet, and the vortex tube assembly is connected to the second air inlet.

6. The oven cooling explosion-proof device according to claim 5, characterized in that: The vortex tube assembly includes a nozzle, a vortex tube, a cold end tube, and a hot end tube. The nozzle is connected to the vortex tube, and a vortex chamber is provided inside the vortex tube. One end of the vortex tube is provided with a first air outlet, and the other end is provided with a second air outlet. The diameter of the second air outlet is larger than the diameter of the first air outlet. The cold end tube is connected to the first air outlet and the second air inlet. The hot end tube is connected to the second air outlet.

7. The oven cooling explosion-proof device according to claim 6, characterized in that: The nozzle is connected to a pressure regulating valve, which is used to control the flow rate and pressure of the compressed gas.

8. The oven cooling explosion-proof device according to claim 6, characterized in that: The outer end of the hot end tube is connected to a hot end control valve, which is used to connect to the oven and control the output of hot airflow.

9. The oven cooling explosion-proof device according to claim 1, characterized in that: A temperature sensor is installed at the lower end of the drying device, and the temperature sensor is used to monitor the temperature in real time.

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