The vacuum mixer puts the material under negative pressure through the vacuum device. So that the material is fully expanded, no air bubbles, good elasticity, bright color. And maximize the extraction of protein, is the ideal equipment to improve the quality of products. Adopting parallel double-shaft structure, inclined plate paddle, the material in the hopper turning at the same time for the circular motion, so that a variety of materials more uniform mixing Adopting double-speed double power, according to the type of stuffing and technology to choose a different rotational speed and different ways of operation for mixing LNIB series of single-motor, two-speed motor, high and low shaft double-shaft mixers, two shafts rotating trajectory of the intersection of the forward and reverse rotation automatically converted to uniform mixing, shorten the mixing time (experimental evidence), and reduce the time of mixing, and reduce the time of mixing, and reduce the time of mixing. Shorten the mixing time (experiment proves that it can shorten the mixing time by more than 60%). The control system is programmed by microcomputer, and the discharging door and vacuum cover are controlled by pneumatic.