Double-panel pneumatic hot air isolation door

The double-panel pneumatic hot air isolation door is a high-performance, heavy-duty flue and air duct isolation device specially designed for thermal power plants, heating systems, cement plants, chemical industries and various high-temperature flue gas pipeline systems. It is mainly used for safely isolating, cutting off and sealing high-temperature hot air, flue gas, exhaust gas and dust-laden airflow in industrial ventilation and thermal circulation pipelines. Featuring a unique double-layer plate structure and pneumatic driving system, this isolation door completely solves the problems of poor sealing, air leakage, thermal deformation and low safety reliability existing in traditional single-layer air doors under long-term high-temperature working conditions.

The product adopts a double-panel hollow structural design with internal heat insulation and thermal resistance materials, which effectively reduces heat conduction and prevents high-temperature deformation of the door body. Even under continuous high-temperature airflow impact, the equipment maintains stable structural rigidity and flatness, avoiding bending, warping or jamming during opening and closing. Compared with ordinary single-plate doors, the double-panel structure greatly improves thermal insulation performance, enhances overall structural strength, and extends service life in harsh high-temperature environments.

Equipped with a high-sensitivity pneumatic actuator, the isolation door realizes fast, stable and flexible opening and closing actions. The pneumatic driving method features explosion-proof performance, safe operation and strong adaptability to industrial site environments with high temperature, dust and vibration. It supports both local manual operation and remote automatic control, which can be linked with the central control system to realize intelligent pipeline switching, system isolation and equipment maintenance safety isolation. The whole action process is smooth, low-noise and free of impact, ensuring stable long-term frequent switching operation.

In terms of sealing performance, the door is fitted with high-temperature resistant flexible sealing strips and labyrinth sealing structures around the door frame. When fully closed, it achieves excellent airtight isolation effect with extremely low air leakage rate, effectively preventing hot air backflow, flue gas leakage and heat loss. This significantly improves the operating efficiency of thermal systems and ensures the safety and stability of pipeline equipment during overhaul and shutdown.

The door body is made of high-quality carbon steel or stainless steel with anti-high temperature, anti-oxidation and anti-corrosion treatment. It is structurally optimized to resist wind pressure, airflow impact and thermal fatigue. The overall design is compact, rigid and durable, requiring minimal daily maintenance. It can stably operate for a long time under working conditions of high temperature, high wind pressure and dusty airflow.

Widely applied in hot air ducts, flue gas pipelines, exhaust systems and thermal circulation pipelines of power, metallurgy, chemical and building material industries, the double-panel pneumatic hot air isolation door has become an essential core isolation equipment for industrial thermal system safety control, energy saving and consumption reduction, and equipment maintenance guarantee.