How to choose between twin screw oil press and single screw oil press?

Screw Oil Press Selection Decision Framework

1. Core process differences

1. Single screw oil press

   • Structural features: Single screw shaft progressive extrusion, pressure gradient is linearly distributed

   • Technical advantages:
     • Reduce equipment investment by 30-40%
     • Unit energy consumption ≤8.5kW·h/ton of raw material (peanut meal residual oil rate 7-8%)

   • Applicable scenarios:
     • Small and medium-sized oil plants (daily processing capacity < 20 tons)
     • Conventional oilseed hot pressing (soybean/peanut/rapeseed)

2. Double screw oil press

   • Structural features: Double helical axes rotate in opposite directions to form a shear-extrusion composite force

   • Technological breakthroughs:
     • Oil yield increased by 15-20% (the residual oil rate of flaxseed cold pressing is ≤5%)
     • Support three-stage pressing process (pretreatment → main pressing → finishing pressing)

   • Applicable scenarios:
     • Special oil processing (safflower seeds/walnuts/grape seeds)
     • Medium to large continuous production lines (daily processing capacity 30-100 tons)

2. Selection Decision Matrix

3. Technical evolution of screw oil press
Currently, intelligent twin-screw oil presses (such as the Penguin Group 2024 model) have appeared on the market, integrating PLC control systems and automatic pressure regulation modules to control pressure fluctuations during the pressing process within the range of ±0.3MPa, which is particularly suitable for the physical pressing needs of high-end oils such as olive oil.