The 6FS series of complete flour mill units are designed on the base of the original 6FY series of flour mills by adding air elevators. The units have the following advantages:
i)  Raise the flour mill's mechanization degree, cut down  operator's labour intensity.
ii)  Adopt compressed air to transport grain. For seal pipes strictly, thus prevent flour from releasing efficiently, cut down powder's pollution greatly.
iii)  Drop down the finished production's temperature and mill grain again and again, thus improve the flour's quality greatly.