Model ZX28 screw oil press is the larger continuous pre-press and one-time pressing equipment in China, which is widely used to press the seeds containing more oil such as the cottonseed kernels, rape seed, tung seed maize embryo and peanut kernels. It has the following advantages: high processing ability; low power consumption; low operation expense, defatted cake being loose but not crushed, easy to sovent penetration; low residual oil rate. Such equipment is the ideal oil pressing equipment for the large and medium- sized oil processing plant.