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Working Principle of Tunnel Oven for Vial Filling Sealing Line

2023-12-05

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Marya

The vial bottle tunnel oven is a commonly used equipment for vial bottle disinfection and drying in pharmaceutical vial filling sealing production line. It uses a hot air circulation method to control temperature and humidity, so that vial bottles can achieve disinfection and drying requirements in a short period of time.

The vial bottle tunnel oven is a commonly used equipment for vial bottle disinfection and drying in pharmaceutical vial filling sealing production line. It uses a hot air circulation method to control temperature and humidity, so that vial bottles can achieve disinfection and drying requirements in a short period of time.

 


1.Hot Air Circulating System


The vial bottle tunnel oven operates using a hot air circulation method. The hot air circulation system consists of a fan, heater, and air duct. The fan generates strong wind through rotation, blowing the hot air generated by the heater into the oven. The hot air forms convection inside the oven, distributing heat evenly, thereby improving the thermal efficiency of the oven.


2. Temperature Control System 


The temperature control system of the vial bottle tunnel oven adjusts the temperature inside the oven by controlling the power of the heater. The temperature sensor collects temperature signals inside the oven and transmits the signals to the control system. The control system adjusts the power of the heater based on the difference between the set temperature value and the actual temperature value to achieve stable temperature control.

 


3.Humidity Control System


The humidity control system of the vial bottle tunnel oven adjusts the humidity inside the oven by controlling the speed of the fan and the operation of the humidity-discharging device. The humidity sensor collects the humidity signal inside the oven and transmits the signal to the control system. The control system adjusts the speed of the fan and the operation of the humidity-discharging device based on the difference between the set humidity value and the actual humidity value, in order to achieve stable humidity control.


4.Operation Control System


The operation control system of the vial bottle tunnel oven consists of a PLC (Programmable Logic Controller) and a touch screen. PLC is the brain of the oven, responsible for controlling the operation of the entire system. The touch screen provides a human-computer interaction interface, through which temperature, humidity and other parameters can be set, the operating status of the oven can be monitored, and fault diagnosis and alarm can be performed.

 


5.Internal Structure of the Tunnel Oven


The internal structure design of the vial bottle tunnel oven is reasonable to ensure the effectiveness of hot air circulation. There are multiple layers of baking plates in the oven, and the gaps between the plates are moderate, which is conducive to the ventilation and even distribution of hot air. The material of the baking tray is generally stainless steel, which has good high-temperature resistance and easy cleaning characteristics.


6.Workflow


The workflow of the vial bottle tunnel oven generally includes stages such as preheating, disinfection, drying coal, and cooling. Firstly, place the vial bottles to be processed on a baking tray and feed the tray into the oven through a conveyor belt. Then, start the hot air circulation system and temperature control system, gradually raise the temperature inside the oven to the set disinfection temperature, and continue disinfection for a period of time. After disinfection is completed, turn off the heater, start the humidity-discharging device, reduce the humidity in the oven to the set dry explosion humidity, and continue dry explosion for a period of time. Finally, send the baking tray inside the oven to the cooling area for cooling. After the vial bottle reaches room temperature, it can be packaged and stored.

 


7.Advantages and Applications


The vial bottle tunnel oven has the advantages of high temperature and humidity control accuracy, good drying effect, and simple operation. It is widely used in industries such as pharmaceuticals, chemicals, and food to disinfect and dry vial bottles to ensure product quality and safety.
 

8.Summary


The vial bottle tunnel oven adopts a hot air circulation method, which controls temperature and humidity to achieve disinfection and drying requirements for vial bottles in a short period of time. Its working principle is clear. Through the coordination of the hot air circulation system, temperature control system, humidity control system, operation control system, and internal structure of the oven, it achieves efficient processing of vial bottles. The vial bottle tunnel oven is widely used in industries such as medicine, chemical industry, and food, providing reliable guarantees for product quality and safety.