Guangdong Zhongshan Metal Powder Explosion-Proof Sealed Pneumatic Conveying Project
A metal powder processing company needs to transport highly active metal powder from the sealed storage silo to downstream equipment on its production line in Zhongshan, Guangdong. This material is flammable and explosive, which sets strict requirements for the explosion-proof rating, sealing, and wear resistance of the conveying system. The company's original open conveying method carries the risk of dust leakage and cannot meet explosion-proof standards, urgently requiring a safe and reliable pneumatic conveying solution.
Customer pain points
1.Safety hazards are prominent: Metal powders are prone to static electricity accumulation during transportation, which may explode upon exposure to oxygen or high temperatures. The original equipment lacks effective explosion-proof measures.
2.Environmental pollution is severe: Open conveying causes metal dust to escape, which not only wastes raw materials but also endangers operator health and poses risks of environmental penalties.
3.Equipment wears out quickly: Metal powder is highly hard, causing severe wear on pipes and elbows. Traditional conveying systems often stop to replace parts, affecting production efficiency.
4.Insufficient sealing performance: Ordinary pneumatic conveying equipment struggles to achieve full sealing, and oxygen content control is challenging, making it impossible to meet chemical safety production requirements.
Solutions and product advantages
To address these pain points, we have designed an explosion-proof sealed pneumatic conveying system for our customers, with the following main features:
1.Explosion-proof design: The system uses inert gases (such as nitrogen) as the delivery medium, with continuous oxygen concentration monitoring and automatic gas replenishment to eliminate the three key elements of explosion at the source. Electrical components are selected with explosion-proof grade ExdII.CT6, and the pipes are equipped with explosion vents and flame arresters to ensure safety under extreme conditions.
2.Fully sealed conveying: From the feed inlet to the discharge port, all connections use special sealing structures. Materials operate in sealed pipelines under negative or positive pressure without any leakage points, fully preventing dust overflow.
3.Wear-resistant and long lifespan: Pipe elbows use wear-resistant ceramic linings or high-chromium alloys, extending service life by more than three times; The straight pipes use thickened seamless steel pipes, with hardened surfaces to reduce wear.
4.Intelligent monitoring and control: Integrated PLC control system displays conveying pressure, flow rate, oxygen concentration, and other parameters in real time, and features fault self-diagnosis and remote alarm functions, making operation simple and maintenance costs low.
Implementation Results
After the solution was put into use, dust concentration at the customer's production site dropped below the safety threshold and successfully passed the explosion-proof acceptance. The continuous operation cycle of the equipment has been extended from the original 2 months to over 8 months, raw material loss has been reduced by 95%, and manual maintenance frequency has been cut by 70%. Currently, the system has been operating normally for over two years, becoming a benchmark case for internal safety production for customers.