In the constant temperature laboratory of the ply-pack factory, engineer Zhao Yan poured a can of quartz dust with a particle size of less than 15 microns into the test cabin. As the console button was activated, the airflow simulating a sandstorm instantly filled the entire space, and visibility dropped sharply to less than 2 meters. The packaging equipment equipped with the dynamic air pressure balance system in the cabin was accurately adjusting the internal airflow at a speed of 32 times per minute-this is the ultimate test scenario of the seventh-generation prototype of this technology. Traditional dust prevention design relies on the passive protection of physical sealing, while the breakthrough of the dynamic air pressure balance system lies in "dynamic braking". The system's built-in industrial environment sensing module monitors the external dust concentration in real time. When the sensor detects a surge in particulate matter, the positive pressure airflow generation device can be activated within 0.03 seconds. The high-speed airflow forms an annular barrier inside the device, and with the three-layer staggered seal mechanical structure, it effectively blocks more than 90% of the dust intrusion path.
"This is equivalent to installing a breathing protective cover for the equipment." Lin Wei, the head of the R&D team, pointed to the three-dimensional simulation diagram and explained. In a normal environment with a dust concentration of less than 100μg/m³, the system only maintains the basic air pressure, and the energy consumption is reduced by 47% compared with the traditional dust prevention mode; once a sudden sandstorm occurs, the adaptive algorithm will start the gradient pressurization, which can form a maximum internal positive pressure of 3.2kPa, forcing dust particles to be discharged from the equipment along the special guide groove.
The core component of this technology, the two-way air pressure valve, adopts aerospace-grade titanium-aluminum alloy casting process. Its honeycomb filter element structure has been optimized through 217 wind tunnel experiments. It can not only withstand the temperature difference deformation of 60¡æ during the day and night in the desert area, but also intercept 99.6% of PM10 particles. A Saudi auto parts manufacturer found in a field test that after the packaging equipment equipped with the system ran continuously for 120 hours, the amount of dust deposited on the transmission bearing was only 1/18 of that of the unprotected equipment.
With the advancement of Industry 4.0, the dynamic air pressure balance system is deriving more intelligent applications. At a photovoltaic panel production base in Oman, the system has achieved data interconnection with the central control platform and can activate the enhanced dust prevention mode 2 hours in advance according to the weather warning. Hassan Al-Sani, the production line supervisor, said: "In the past, sandstorm warnings meant that the entire line was shut down. Now our packaging process can still maintain 85% operating efficiency."
The R&D team is currently working on the nano-level electrostatic adsorption module and plans to increase the system's dust prevention accuracy to PM1.0 level. The latest data from the laboratory shows that the ninth-generation prototype, which integrates microwave oscillation technology, has achieved a breakthrough in zero penetration in a simulated ultrafine graphite dust environment.
