●采用专利技术设计制造，结构紧凑，密气性强。
●H型叶片端面采用耐磨钢板，解决叶片不易磨损。
●轴承外置，解决串灰，维修方便。
●叶片磨损可调节或更换，产品使用寿命长。
●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.

使用范围和性能特点
Application Scope and Performance Characteristics
FDFY系列防堵关风器广泛使用于粮食、饲料、食品加工厂及化工、医药、烟草、冶金、水泥等部门。对于在正压、负压状态下的粉粒状、片状及纤维物料起着连续排卸和密气的作用，是通风除尘和气力输送风网中的重要设备。
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.