Packaging online leak detectorIt is a device used for real-time detection of packaging sealing performance, widely used in industries such as food, medicine, and daily chemical to ensure the quality and safety of products during production, transportation, and storage. This device adopts advanced non-destructive testing techniques, such as vacuum attenuation leakage testing, ultrasonic testing, CO ₂ tracer gas detection, etc., which can accurately identify small leakage points without damaging the packaging. Its core technologies include high-precision sensors, automated control systems, and data analysis software, which can achieve full process automated detection. For example, equipment based on vacuum attenuation method determines sealing by monitoring pressure changes inside and outside the packaging, while CO ₂ detection system uses gas molecule tracking technology to locate the leak location.

　　Packaging online leak detectorThe structural composition usually includes the following key parts:

1. Sensors

Function: Responsible for detecting whether there is any leakage in the packaging, it is one of the core components of the leak detector. Different types of leak detectors use sensors based on different principles, such as the vacuum decay method. Leak detectors use vacuum sensors to monitor changes in the vacuum level inside the testing chamber; The ultrasonic leak detector uses ultrasonic sensors to emit and receive ultrasonic signals, and determines the sealing of the packaging based on the reflected signals.

For example, in a packaging online leak detector based on vacuum attenuation technology, a highly sensitive vacuum sensor can accurately detect small vacuum degree changes caused by packaging leaks, thereby determining whether there is a leak in the packaging.

2. Control system

Function: To control and manage the entire leak detection process, including setting detection parameters, controlling the on/off of gas or circuit, coordinating the work of various components, etc. Operators can set parameters such as detection pressure, detection time, alarm threshold, etc. through the control system to meet the detection requirements of different packaged products.

For example, some advanced packaging online leak detectors are equipped with touch screens or computer control interfaces, allowing operators to easily set and adjust various parameters on the screen, while also displaying real-time detection data and status information.

3. Pneumatic system

Function: To provide a stable gas supply for leak detectors and enable inflation, extraction, and other operations of packaging to create a suitable pressure environment for detection. For example, in a vacuum decay leak detector, the gas path system is responsible for placing the packaging in a vacuum environment and performing exhaust operations after the pressure is maintained.

Components: including vacuum pump, air pipe, valve, pressure regulating valve, etc. A vacuum pump is used to extract air from the testing chamber, keeping the packaging at a set vacuum level; The trachea is used to connect various components and transmit gas; The valve controls the opening and closing of the gas path to ensure that the gas flows according to the detection requirements; The pressure regulating valve is used to adjust the pressure of the gas to meet the detection requirements.

4. Mechanical structure

Function: To provide stable physical support for leak detectors, ensure accurate installation and normal operation of various components, and also facilitate the transportation and positioning of packaged products. For online packaging leak detectors, the mechanical structure also needs to be coordinated with the packaging production line to achieve an automated detection process.

Components: mainly including shell, bracket, conveyor belt, etc. The outer shell serves to protect the internal components and also has certain functions such as dust and water resistance; The bracket is used to support and fix various components, ensuring the accuracy of their relative positions; The conveyor belt is responsible for sequentially transporting the packaged products to the inspection position, improving inspection efficiency by 5.

5. Data Processing and Display System

Function: Process and analyze the data collected by sensors, determine whether the packaging is qualified, and display the detection results in a visual way to the operator. The system can also store detection data for subsequent queries and statistical analysis.

Components: including data acquisition card, processor, display, storage device, etc. The data acquisition card converts the analog signal of the sensor into a digital signal and transmits it to the processor for processing; The processor analyzes and processes data based on preset algorithms and judgment criteria to obtain detection results; The monitor is used to display real-time detection data, detection results, and equipment operating status information; Storage devices can store a large amount of detection data, facilitating subsequent quality traceability and management.

6. Alarm device

Function: When a leakage is detected in the packaging, a sound and light alarm signal is promptly issued to remind the operator to take action. The alarm device can attract the attention of operators to take timely measures to prevent unqualified products from entering the next process.

Components: usually including buzzer, indicator light, etc. The buzzer emits a sound alarm, while the indicator light flashes or changes color to indicate the alarm status. The combination of the two can more effectively attract the attention of operators.