Totally-enclosed, internal-circulation and self-dust-settling granulation system

The utility model provides a full-closed, internal-circulation and self-dust-falling granulation system. A powder output pipe of a coarse material crushing system is connected with a first air conveying system through a first conveying pipe; a discharge port of the first air conveying system is connected with the mixer through a second conveying pipe; a fine material crushing device for crushing grain materials is mounted on the mixing machine in a matching manner; a discharge hole of the mixing machine is connected with a blanking tower through a second wind power conveying system and a thirdconveying pipe; a discharge hole of the blanking tower is connected with the conditioner; a discharge hole of the conditioner is connected with a granulator for granulation; and a discharge port of the granulator is connected with the drying tower through a third air conveying system and a conveying pipe. The system can be used for full-automatic production of the feed, so that the production efficiency of the feed is gr