| 摘要 |
A grain cleaning machine comprises a grain cleaning unit mounted on a frame, a centrifugal-pneumatic winnower with an annular pneumatic separation channel, a settling chamber with a shutter, a vibrator and drives. The shutter of speed adjustment of the air flow is made in the form of a differential valve, which simultaneously connects the cavity of air chamber to the environment and with the cavity of centrifugal pneumatic winnower. |
