Abstract: A method for threshing and pneumatic separation of tobacco leaves, including: 1) transporting a mixture of the tobacco slices and stems from a primary threshing set into primary pneumatic separation unit for sorting out tobacco slices, and transporting a remaining mixture into a secondary threshing set; 2) transporting the mixture from the secondary threshing set into a secondary pneumatic separation unit for sorting out the tobacco slices and qualified stems, and transferring a remaining mixture to a tertiary threshing set; 3) transporting the mixture from the tertiary threshing set into a tertiary pneumatic separation unit for sorting out the tobacco slices and the qualified stems, and transferring a remaining mixture into a quaternary threshing set; 4) transporting the mixture from the quaternary threshing set into a quaternary pneumatic separation unit for sorting out the tobacco slices and the qualified stems, and returning a remaining mixture to the quaternary threshing set.

Abstract: The present invention comprises: a separation silo, a discharge silo, a upper sidewall of the separation silo communicated with the discharge silo through a communication port, wherein an air curtain is disposed in the communication port to isolate the silos from each other, a discharge port is disposed at the bottom of the discharge silo, a suction outlet is mounted on the top of the separation silo, a feeding port is disposed at the lower part of a sidewall of the separation silo, which is precisely facing towards the underside of the end of the belt conveyer, a vibration trough is arranged at the lower part of the separation silo, a damper plate is disposed underside thereof, an air inlet is located underbelly thereof at the bottom of the separation silo, a rejection outlet is installed at the underside end of the vibrating trough.

Abstract: The present invention comprises: a separation silo, a discharge silo, a upper sidewall of the separation silo communicated with the discharge silo through a communication port, wherein an air curtain is disposed in the communication port to isolate the silos from each other, a discharge port is disposed at the bottom of the discharge silo, a suction outlet is mounted on the top of the separation silo, a feeding port is disposed at the lower part of a sidewall of the separation silo, which is precisely facing towards the underside of the end of the belt conveyer, a vibration trough is arranged at the lower part of the separation silo, a damper plate is disposed underside thereof, an air inlet is located underbelly thereof at the bottom of the separation silo, a rejection outlet is installed at the underside end of the vibrating trough.