Take drainage device's vacuum system and use cigarette packing system of this system

The utility model relates to a take drainage device's vacuum system and use cigarette packing system of this system, the vacuum system that takes drainage device includes the buffer tank, and the ponding exhaust drainage device in supplying the buffer tank still, drainage device include the receiver, and the bottom of receiver is less than the buffer tank, the receiver through first feed liquor pipe with the bottom intercommunication of buffer tank is equipped with first feed liquor valve on the first feed liquor pipe, the bottom of receiver is equipped with the ponding exhaust second drain pipe that supplies in the receiver, is equipped with the second drain valve on the second drain pipe. The during operation, first feed liquor valve keeps opening, and the second drain valve keeps closing, and the receiver is gone into to the first feed liquor bank of tubes of hydrops accessible in the buffer tank, hydrops escalation in the receiver. When hydrops in the receiver is more, closing first feed liquor valve, ope