Pre-pressing and bulking machine

The machine can band pre-pressing together with extruding and swelling .It is suitable for high oil vegetable materials such as cotton-seeds rape seeds and castor seeds etc. First it press out part of oil in the materials, then extrude and swell pre-pressing cake. So you can get high quality swelling cake .The cake is crisp but not smash. Its loose and porous structures suitable for infiltration of solvent. This can improve the capacity of extraction above 30%.It can reduce the consume of solvent 10-20% and reduce the oil rate in cake .So the oil output can be improved.