| 摘要 |
FIELD: agriculture. ^ SUBSTANCE: invention relates to the agricultural machinery and may be used for drying grain. The bunker consists of outer and inner perforated cylinders with a drying chamber between them, a fan, an air duct, and an air valve. Over the inner perforated cylinder the tapered guide is located. Air valve is designed as a set of pistons mounted on each other and the guiding bottom connected by a skirt of flexible material. Inside the skirt the piston and the bottom are rigidly fixed to each other. In the guiding bottom concentric grooves are made connecting the duct with an inter-skirt cavity and the cavity between the skirt and the inner perforated cylinder. On the lower half of the generating skirt a restrictive ring is set, coupled by the rods with the rigid plate located above the piston. Mechanism for adjusting the length of the skirt working surface is attached to the rigid plate. ^ EFFECT: improvement of quality of dried grain is provided. ^ 6 dwg |
