●采用專利技術設計制造，結構緊湊，密氣性強。
●H型葉片端面采用耐磨鋼板，解決葉片不易磨損。
●軸承外置，解決串灰，維修方便。
●葉片磨損可調節或更換，產品使用壽命長。
●Designed and manufactured by patented technology,compact structure and strong air tightness.
●The end face of H-type blade is made of wear-resistant steel plate to prevent the blade from wearing.
●The bearing is outlayed to resist dusts. It is convenient to be manitained.
●It is able to adjust or change the abrasion of the vane.It has long service life.

使用范圍和性能特點
Application Scope and Performance Characteristics
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、負壓狀態下的粉粒狀、片狀及纖維物料起著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。
FDFY series anti-blocking airlock is widely applied to large, small and medium-sized food and feed processing 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.