Flanged Rotary Airlock Valve

Flanged Rotary Airlock Valve is a heavy‑duty star‑type airlock feeder with integrated flanged inlet and outlet,designed for bolt‑on installation to dust collectors,cyclones,silos and pneumatic conveying pipelines.Unlike non‑flanged models that require additional adapters,this unit comes with factory‑made round or square flanges for direct bolting,delivering tighter joint sealing and higher structural stability.It performs dual tasks:continuous volumetric discharging of powder,dust and granular materials,plus reliable pressure isolation between positive‑pressure and negative‑pressure sections.Widely adopted in environmental‑protection dust‑removal and bulk‑solid processing systems,it minimizes air leakage at connection points and guarantees stable system operation.

Driven by geared reduction motor,the multi‑pocket rotor rotates at low constant speed inside the valve housing.Dry bulk materials fall from upper equipment into rotor chambers.As the rotor turns,filled pockets rotate downwards and discharge materials by gravity.The precise clearance between rotor blades and housing wall forms dynamic air‑locking seal,preventing cross‑flow of airflow across pressure zones.Built‑in flanges ensure firm connection with mating flanges of upstream and downstream equipment,effectively avoiding air infiltration caused by poor joint sealing,a common failure for adapter‑assembled valves.

The valve housing can be supplied in ductile iron,carbon steel or stainless steel according to material properties.For abrasive cement dust,mineral powder and sharp particles,hard‑faced rotor blades and wear‑resistant inner lining are available to extend service life.Both square‑flange and round‑flange versions comply with standard flange specifications for easy site docking.Bearings are externally mounted and isolated from fine dust to reduce shaft wear and powder leakage.Custom options include general‑purpose,anti‑clog,high‑temperature and variable‑frequency speed‑control types to satisfy diverse working‑condition demands.

The greatest advantage of flanged rotary airlock valve lies in its standardized flange connection.Direct bolt‑on mounting eliminates extra transition adapters,cuts installation workload and reduces potential leakage points.Flange joints sustain higher pressure difference and vibration compared with clamp‑connected models,well suited for long‑term continuous running under fluctuating pressure.The compact overall layout saves installation space under dust hoppers and silos.Wearing components such as seals and rotors can be maintained without full unit removal from pipelines,lowering maintenance cost and production downtime.

Important operational notes:this valve is intended for free‑flowing dry powder and granules.Wet,sticky or caking materials may result in rotor jamming.Overload protection device is strongly recommended to protect drive assembly from hard foreign debris.Regular inspection should cover flange bolt tightness,rotor clearance,bearings and sealing parts.Loose flange bolts will create air leakage and degrade airlock performance.

Flanged Rotary Airlock Valves are extensively deployed for bag‑house dust collectors,cyclone separators,pneumatic conveying lines,cement plants,chemical powder workshops,grain storage and mining processing lines.As a robust flange‑mount airlock and feeding device,it combines precise volumetric discharge,reliable pressure isolation and firm connection performance.It offers dependable solutions for modern industrial bulk‑material handling and dust‑treatment engineering.