1. The vane is in the form of "Y" with the compact design and tight gas.
2. The end face of the vane is applied with the imported slab rubber so that it is zero clearance with the enclosure and fully antisticking and antiblocking.
3. The bearing is outlayed to resist dusts. It is convenient to be manitained. 使用範圍和性能特點：
FDFY系列防堵關風器廣泛使用于糧食、飼料、食品加工廠及化工、醫藥、煙草、冶金、水泥等部門。對于在正壓、負壓狀态下的粉粒狀、片狀及纖維物料起着連續排卸和密氣的作用，是通風除塵和氣力輸送風網中的重要設備。 Application Scope and Performance Characteristics:
FDFY series anti-blocking airlock is widely applied to large, small and medium-sized food and feedprocessing factories, chemical, medicine, tobacco, metallurgy and cement industries. It can continuously discharge the powdery, granular, flaky and fiber materials with its good airtightness function under positive pressure and negative pressure. It is an important equipment in the exhaust system of ventilation, dust removal, pneumatic conveying. 關風器性能及參數表（Permance And Paramenters of Airlocks)：
技術參數表（Technical Parameter Table)：
産品結構圖（Diagram of Products Strcture):
R-物料容量（噸/米3）K-修正系數，一般取0.7~0.8 Material Discharging Amount of Airlock Is Calculated According to the Following Formula:
V-volume of airlock(l/r) N-Rotating speed of airlock(r/min)
Y-volumetric efficiency of airlock:grain material r-0.8;powder material=0.5~0.6
R-Matirial capacity (t/m3) K-Reduction coefficient, generally0.7~0.8
Our company customize the airlocks with diffrent materials, specifications, types and particular configurations according to customers'requirements