Inflatable food leak detection machine

I. Product Introduction

1. Performance Overview

The MT-DZ-XL-S2-01 is a fully automated functional testing system designed for high-speed production lines, with a maximum inspection capacity of 300 packs per minute. It employs a contact-based online testing method that directly and precisely measures the pressure characteristics inside the product container. The system ensures stable and reliable sampling data, delivering an accuracy level superior to comparable domestic and international technologies.

At its core is the belt-squeeze detection technology, developed and refined over more than a decade of research and application. During operation, a flexible belt clamp applies controlled pressure to the product as it moves along the conveyor. A side-mounted sensor captures the resulting internal pressure response, which is then converted into a digital signal by the controller. This signal undergoes DSP-based processing to accurately reflect the product’s internal pressure and overall quality.

2. Applicable Inspection Objects

Cartons or bags containing liquid nitrogen

Plastic bags filled with gas or steam

Liquid aluminum-foil stand-up pouches

3. Inspection Capabilities

Detection of leakage due to defective seals

Identification of insufficient internal pressure or abnormal bulging

4. Key Performance Parameters

Adaptive synchronization with production line speed, ensuring automatic stop during line downtime to prevent bag rupture or jams

Inspection throughput exceeding 300 bags/min

Dual-mode support for high- and low-pressure products

Pressure detection accuracy within ±0.02 MPa

High-speed shock resistance

User-friendly HMI (human-machine interface) operation

Real-time dynamic monitoring and display of multiple rejection data sets

Visual alarm system with light indication for abnormal impacts

Fully localized Chinese-language menu

Proprietary Maotong DSP digital signal processing algorithm

24/7 remote technical support capability

Automatic continuous rejection with shutdown protection

6. Schematic diagram of equipment extrusion

We add a guide mechanism at the front end to pre-extrude the product to maintain a certain pressure. If there is a leak, we release the pressure as fully as possible and measure the pressure at the tail end. If there is no leakage, the pressure change will not be large. If there is a leak, the pressure will be much different from the normal pressure. In this way, we can reliably detect leaks and products with poor sealing effects.

7. Principle of Detection

When a product enters the conveyor belt, the positioning sensor detects its presence and records the product’s identification number along with the encoder signal via the control unit. This sensor simultaneously triggers the force sensor to capture the instantaneous pressure applied by the product against the belt. The collected pressure data is transmitted over the network to the Maotong signal processing board, where it is processed and analyzed. The results are then relayed to the human–machine interface (HMI) for real-time dynamic display and to the control unit. If the analysis determines that the product does not meet pressure requirements, the control unit sends a rejection command to the rejector, which subsequently removes the identified defective product.

II. Equipment Installation

1. Loading, Unloading, and Storage

During transportation, the equipment must be firmly fixed and properly packaged. Special care must be taken to avoid any pressure or tensile force on the sensors. The exterior should be wrapped with moisture-resistant and impact-proof materials to prevent scratches, dents, or moisture damage. The machine must be securely fastened to the transport vehicle to avoid vibration-related damage.

When unloading, use specialized handling tools and ensure the equipment is safely secured to prevent slipping. For storage and operation, environmental conditions must be maintained within the following range: relative humidity 10%–80%, and temperature 0°C–50°C.

2. Installation Requirements

2.1. Place the equipment horizontally, ensuring the clamping conveyor is aligned and parallel with the main conveyor belt.
2.2. Prior to powering on, check all cable connections and verify proper grounding of the rack control box.
2.3. Electrical requirements: single-phase AC 220V, 50Hz, total power 250W.
2.4. Pneumatic requirements: compressed air pressure 4–8 bar, meeting industry quality standards.
2.5. For optimal detection accuracy, test products after cooling, and install the equipment on a straight conveyor section measuring 1.5–2m in length.

3. Structure and Appearance

3.1. Overall dimensions: Refer to diagram provided.
3.2. Frame construction: 304 stainless steel, integrated with conveyor system.
3.3. Approximate weight: 100 kg.

III. Safety Precautions for Operation

Before operating the system, please follow the safety guidelines below:

3.1. Operation may only be performed by personnel with basic equipment training.
3.2. Maintenance work must be carried out by qualified technical staff.
3.3. Ensure all safety devices and warning labels are intact and functional prior to use.
3.4. Do not operate the machine with the cover open; open only after disconnecting power and compressed air.
3.5. Keep hands clear of the reject cylinder connecting rod during operation.
3.6. Do not obstruct or touch the photoelectric sensor during operation, as this may cause false triggering of the rejector, resulting in equipment malfunction or injury.
3.7. Do not disconnect electrical connections while the equipment is powered on to avoid component damage.
3.8. When servicing the equipment, always use identification tags to prevent accidental startup and injury.
3.9. Before connecting external devices, ensure both systems are powered off. Reconnect power only after completing the connection.
3.10. As the electronic components are highly sensitive to static discharge, the machine frame and control cabinet must be properly grounded.