Optimizing Oil Yield in Small and Medium-Scale Oil Mills: A Technical Guide to the ZY24 (202-3) Screw Press
2025-09-14
QI ' E Group
Technical knowledge
This technical guide explores how small and medium-scale oil mills can significantly improve oil extraction efficiency using the ZY24 (202-3) screw press. By focusing on key process optimizations—including raw material pre-treatment, moisture control, barrel pressure adjustment, and temperature management—this article provides actionable insights for maximizing yield from rapeseed, peanuts, sunflower seeds, and other oilseeds. Drawing on frontline industry experience and detailed analysis of feedstock characteristics, it offers precise equipment parameter tuning tips (such as screw speed, pressing segment distribution, and die gap settings), common operational pitfalls, and practical solutions. With supporting charts, flow diagrams, and real-world parameter examples, this resource is ideal for technicians and plant managers seeking reliable, high-efficiency oil pressing operations. Suitable for global audiences, it supports SEO optimization across technical platforms and enhances brand credibility in the edible oil processing sector.
Optimizing Oil Yield in Small-Scale Mills: The ZY24 (202-3) Screw Press Breakthrough
For small to mid-sized oilseed processing plants, maximizing yield from every ton of raw material isn’t just a goal—it’s survival. With rising feedstock costs and tighter margins, operators must optimize not only their equipment but also the entire pressing process. This guide dives into how the ZY24 (202-3) screw press—a workhorse in global oil mills—can deliver up to 3–5% higher oil extraction rates when paired with precise operational adjustments.
Key Process Steps That Make or Break Efficiency
The real magic lies in four critical variables:
Moisture Control: For rapeseed, ideal moisture content is 6–8%. Too dry? Oil loss increases by ~7%. Too wet? Reduced throughput and clogging risk.
Pre-Treatment Granularity: Peanuts should be crushed to 1.5–2mm particles. Larger pieces reduce contact area and increase pressure drop across the press.
Pressure & Temperature Management: Optimal temperature range for soybeans is 95–105°C. Higher temps improve flow but can degrade quality if unchecked.
Screw Speed Adjustment: At 30–40 RPM, the ZY24 achieves optimal compression without overheating or excessive wear on the barrel.
Oilseed Type
Recommended Moisture (%)
Screw Speed (RPM)
Expected Yield Gain (%)
Canola/Rapeseed
6–8
35
+4.2%
Peanuts
7–9
38
+3.8%
Sunflower Seeds
6–7
32
+4.5%
One common mistake? Ignoring the “pressure gradient” between the first and last compression zones. In practice, many operators set all sections equally. But industry experts recommend increasing pressure by 15–20% in the final stage to extract residual oil more effectively.
Why ZY24 (202-3) Stands Out
Unlike generic presses, this model features adjustable tapering barrels and variable-speed drives that let you fine-tune each stage based on seed type and seasonality. Our field engineers have seen consistent improvements—from 2.3 kg oil per 10 kg seeds to over 2.6 kg—with minimal downtime and no major modifications.
Whether you're managing a family-run mill in India or a cooperative in Nigeria, mastering these steps turns your ZY24 from a machine into a profit engine.
