FIELD: ventilation.
SUBSTANCE: invention relates to an air filtering system, intended for blocking particles in a dryer, in particular, plant grains. Filtering system comprises rotating cylinder (1) of filtering member (3) driven by gearmotor (2), through which whole exhaust air flow (8) passes from the dryer for plant grains, containing solid particles (particle size is more than the size of mesh cells). Air, exhausting from the dryer, is discharged into the environment, freed from such particles. In the lower part of the filtering system there is funnel (7) for collection of material with higher specific weight, from which the air with collected particles passes through system (10) of pipes connected to fan (5), into an auxiliary system for filtering solid wastes. In the inner part of the rotating cylinder there is enclosure (4), in which the air flow is generated for cleaning the filtering member, from which the air with particles is discharged through system (10') of pipes, connected to fan (5'), into an auxiliary system for filtering solid wastes. Outside the mesh filter there is system (6) for injection of compressed air, the position of which coincides with the position of enclosure (4). Its function is removal of particles stuck in filtering member (3), by means of intermittent air jets.
EFFECT: technical result is efficient filter cleaning.
6 cl, 5 dwg
