A screw oil press machine is a heavy-duty mechanical oil extraction equipment designed to squeeze edible oil from over 20 types of oil-bearing seeds and nuts. It processes 50–800 kg/h of raw materials including peanut, rapeseed, soybean, sesame, flaxseed, sunflower seed, and coconut, converting them into pure crude vegetable oil suitable for direct consumption after filtration or further refining for commercial distribution.
Compared with hydraulic oil presses, this screw-type oil expeller features continuous operation capability, integrated vacuum oil filtration, and dual-mode functionality for both cold pressing and hot pressing. The three-stage pressing mechanism with alloy steel components ensures maximum oil yield while maintaining residual oil rates as low as 6–7% in the cake. It is ideal for oil mills, small-scale processing plants, agricultural cooperatives, and individual entrepreneurs seeking a reliable, low-maintenance oil extraction solution with minimal footprint requirements.
With 15+ years of manufacturing expertise, Taizy screw oil presses are CE and ISO certified, backed by comprehensive technical support and proven performance across 85+ countries worldwide.
Comparison: Core Technical Specifications & Power Efficiency
| 模型 | L-70 | L-80 | L-100 | L-120 | L-130 | L-165 |
|---|---|---|---|---|---|---|
| Screw Diameter | 70 mm | 80 mm | 100 mm | 120 mm | 130 mm | 160 mm |
| Screw Speed | 41 r/min | 75 r/min | 54 r/min | 54 r/min | 32 r/min | 32 r/min |
| 主电机功率 | 3 kW (220V, single-phase) | 5.5 kW | 7.5 kW | 11 kW | 18.5 kW | 30 kW |
| Vacuum Pump Volume | 4 L | 4 L | 10 L | 10 L | 10 L | 15 L |
| Vacuum Pump Motor | 0.75千瓦 | 0.75千瓦 | 1.1千瓦 | 1.1千瓦 | 1.5千瓦 | 1.5千瓦 |
| 加热功率 | 2 kW | 2.2 kW | 2.8 kW | 3千瓦 | 3千瓦 | 3千瓦 |
| 容量 | 50–80 kg/h | 80–140 kg/h | 150–200 kg/h | 250–300 kg/h | 350–400 kg/h | 700–800 kg/h |
| Net Weight | 317 kg | 510 kg | 750 kg | 895 kg | 1210 kg | 1545 kg |
| Dimensions (L × W × H) | 1350 × 1050 × 1100 mm | 1650 × 1230 × 1450 mm | 2000 × 1330 × 1600 mm | 2040 × 1380 × 1600 mm | 2450 × 1380 × 1980 mm | 2620 × 1350 × 1900 mm |
Note: L-70 operates on single-phase 220V for home/small business use. L-80 through L-165 require an industrial three-phase 380V power supply.
How the 4-in-1 Integrated System Maximizes Automation?
Heating and Pressing System
The core assembly consists of heating rings, pressing screws, screw shafts, pressing bars, front and rear supports, adjustment screws, and locking nuts. Oil seeds are progressively compressed within the pressing chamber formed by the bars, forcing oil through the oil lines into the collection pan. Critical wear components utilize carburized alloy steel heat treatment for exceptional hardness and extended service life.
Power Transmission System
A robust drive train comprising the main motor, belt pulley, reduction gearbox, and main shaft delivers stable torque to the pressing mechanism. The 6-pole motor configuration provides strong power output with low noise and energy-efficient operation.
Electrical Control System
The control panel integrates air switches, AC contactors, thermal relays, temperature controllers, voltmeters, and control buttons. Functions include power control, forward/reverse operation, automatic temperature regulation, and overload protection for safe, unattended operation.
Vacuum Oil Filtration System
Featuring a vacuum pump, dual filtration barrels, filter screens/cloths, air chambers, vacuum gauges, piping, and valves. Crude oil is drawn under negative pressure through the filter medium, separating oil residue and producing clean, transparent edible oil. The dual-barrel design enables continuous operation without interruption.
Proven Benefits of Using Screw Oil Press for Commercial Production
Three-Stage Pressing Mechanism
Progressive compression maximizes oil extraction efficiency, achieving complete oil recovery in a single hot-pressing pass.
Cold and Hot Pressing Modes
Hot pressing delivers superior oil yield and efficiency. Cold pressing preserves more nutrients but requires 2–3 passes for optimal extraction.
Automatic Temperature Control
Pre-heating temperature is automatically maintained without operator supervision, ensuring consistent processing conditions.
Low Residual Oil Content
Cake residual oil rates of only 6–7% represent industry-leading extraction efficiency.
User-Friendly Operation
Intuitive controls require no specialized technical training, making the machine accessible to operators of all skill levels.
Continuous Processing Capability
Integrated vacuum filtration allows simultaneous pressing and filtering, maintaining uninterrupted production flow.
Step-by-Step: The Working Principle of High-Pressure Oil Extraction
Power from the main motor passes through the reduction gearbox to drive the main shaft and rotating screw. As oil seeds enter the pressing chamber, the progressively narrowing gap between the screw and chamber walls increases material density and pressure dramatically. Friction generates heat, creating the dual conditions of pressure and temperature essential for oil extraction. Oilseed cell structures rupture, releasing oil that flows through the oil lines while the compressed cake exits through the cake discharge port. Crude oil collects in the filtration barrel above the filter cloth; the vacuum pump creates negative pressure, drawing clean oil through the filter medium while residue remains on the cloth surface. This integrated pressing-filtration process is completed in one continuous operation.
Benchmarking Oil Yield Rates Across 10+ Raw Materials
| Oil Seed | Oil Yield (%) | Residual Oil in Cake (%) |
|---|---|---|
| 芝麻 | 42–55 | ≤7 |
| 花生 | 40–50 | ≤8 |
| 油菜籽 | 28–38 | ≤8 |
| Sunflower Seed | 30–38 | ≤8 |
| 大豆 | 10–16 | ≤7 |
Expert-Level Standard Operating Procedure (SOP) for Daily Use
Pre-Operation Preparation
Inspect all fasteners for tightness. Verify smooth rotation without abnormal noise. Fill the gearbox with L-CKD320 gear oil to the standard level. Adjust the cake outlet gap: loosen the locking nut, turn the adjustment screw counterclockwise until it contacts the cake ring, then back off 2–3 mm clockwise and secure. Connect power and confirm the correct rotation direction (the screw should advance toward the gearbox).
Heating and Startup
Set the temperature controller to 120–200°C (typically 130°C). Activate the heating switch and wait until the temperature reaches the setpoint. Turn the operation switch to the ON position to start the main motor.
Break-In Procedure (Critical for New Machines)
Feed old cake material, rapeseed cake, or rice hulls slowly through the feed hopper. Control the feed rate using the slide gate—do not open it fully. Continue the break-in operation for 2–8 hours until the pressing chamber surfaces are polished and cake discharge is smooth.
Normal Oil Extraction
Maintain steady, continuous feeding without sudden surges. Control cake thickness to 1–3 mm. Monitor the oil residue ratio—it should not exceed 10%; minimal residue indicates proper low-pressure operation. Exhaust smoke from the cake outlet through the smoke pipe. Spread hot cakes immediately to prevent spontaneous combustion. Use an auxiliary cooling fan if the machine temperature rises excessively.
Vacuum Filtration Operation
Once oil flows into the filtration barrel, start the vacuum pump. Open the suction valve while keeping other valves closed. Negative pressure draws oil through the filter cloth into the barrel. Alternate between dual barrels for continuous operation. After filtration: stop the pump, close the suction valve, open the air release valve, then open the oil discharge valve to collect filtered oil. Remove residue from the filter cloth surface.
Shutdown Sequence
Stop feeding material first. Introduce a small amount of cake residue to clear remaining material from the pressing chamber. Stop the machine after cake discharge ceases. Turn off the main power supply.
Facility & Installation Requirements: Planning Your Oil Plant Space
Place the machine on a level surface with adequate operating clearance on all sides. Install dual filtration barrels securely and level. Connect flexible steel hoses with clamps tightened properly. Lay filter cloth flat without wrinkles. Install the oil collection pan and trough. Ground the machine properly—drive the grounding rod 0.5–1m deep in soil 3–5m from the machine. Connect the three-phase four-wire power supply and confirm the correct motor rotation direction.
Preventive Maintenance Guide: How to Extend Machine Life by 30%?
- Every 50 Operating Hours: Check the gearbox oil level—never allow it to run low. Apply grease to the adjustment screw bearings.
- Daily: Remove residual cake from the machine interior. Wipe the surface clean of oil and dust.
- Regularly: Drain moisture from the air chamber bottom valve (normally closed; open during maintenance). When production decreases or oil output becomes abnormal, inspect the screw, pressing bars, and cake ring for wear—replace worn components promptly.
- Annually: Replace the gearbox gear oil completely.
- Long-Term Storage: Perform comprehensive maintenance. Clean and coat the screw, pressing bars, and cake ring with grease. Store in a dry environment to prevent rust.
- Safety Reminder: Always disconnect power before maintenance or component replacement. Never operate with the power connected.
Seed Preprocessing and Pressing Parameters
- General Requirements: Moisture content ≤10%, impurities ≤0.5%. Strictly prohibit stones and iron objects from entering the pressing chamber. Shell-on seeds (e.g., peanuts, cottonseed) should be dehulled. Hot pressing yields superior results; it is recommended to pair with an automatic seed roasting machine.
- 芝麻: Roast at 120–150°C until light gray, with popping sounds audible and oil visible when pressed between fingers. Cake thickness: 0.7–1.5 mm.
- 油菜籽: Northern regions: add 4–6% water; southern regions: no water addition. Roast until brown-red with seed splitting. Pressing temperature: 80–120°C, moisture 1–1.5%. Cake thickness: 1–1.5 mm.
- 花生仁: Moisten, then roast until 80% cooked; kernels and skins separate easily. Cake thickness: approximately 0.7 mm.
- 大豆: Recommend two-pass pressing. First pass: 80–100°C, cake thickness 1.5–2 mm. Second pass: cake thickness 0.7 mm
Single-pass complete extraction may cause scorching and excessive protein degradation.
Troubleshooting Guide
| 问题 | Cause | 解决方案 |
|---|---|---|
| Machine jams from overfeeding | Excessive feed rate | Stop immediately, open slide gate, reverse to clear residue, then resume |
| Motor runs backward | Incorrect phase connection | Swap any two of the three power lines |
| Vacuum pump fails to draw | Wrong rotation, valve error, air leak | Check rotation, verify valves, inspect hose connections |
| Low oil yield | Temperature, wear, feed rate, moisture | Adjust temperature, inspect wear, optimize feed rate, check moisture |
| Slow filtration | Clogged cloth, low vacuum, valve issue | Clean/replace cloth, check vacuum gauge, confirm valve sequence |
Global Safety Standards & Operational Precautions
Never allow the motor to run stalled for extended periods. Avoid direct forward-reverse switching without stopping. Never run the vacuum pump in the reverse direction. Spread hot cakes immediately to prevent spontaneous combustion. Ensure reliable machine grounding. Disconnect power before any maintenance. Prohibit hard objects, metal, or stones from entering the pressing chamber.
Why Choose Taizy Screw Oil Press Machine?
- 15+ years of specialized manufacturing experience with continuous product refinement
- CE and ISO 9001 certified production facilities
- Alloy steel pressing components with carburized heat treatment for extended wear resistance
- Integrated vacuum filtration eliminates separate filtering equipment
- Dual cold/hot pressing modes maximize versatility for different oil seeds
- Factory acceptance testing with video documentation before shipment
- Complete technical documentation and operation manuals
- 提供一年保修和终身技术支持
- Multilingual service team (English, Spanish, French, Arabic)
- Global spare parts inventory with a 48-hour dispatch guarantee
常问问题
What seeds can be processed by the screw oil press?
Over 20 oil-bearing materials including peanut, rapeseed, soybean, sesame, flaxseed, sunflower seed, coconut, corn germ, and melon seeds. For materials with oil content exceeding 40%, we recommend our hydraulic oil press for optimal results.
Can the pressing temperature be adjusted?
Yes, the digital temperature controller allows precise adjustment from ambient to 200°C, with automatic maintenance of set temperature throughout operation.
Is hot pressing more efficient than cold pressing?
Yes, hot pressing typically achieves 15–25% higher oil yield compared to cold pressing. Cold pressing requires 2–3 passes to approach similar extraction rates but preserves more heat-sensitive nutrients.
What power supply options are available?
The L-70 model operates on standard single-phase 220V for home or small business use. Models L-80 through L-165 require industrial three-phase 380V power. Voltage customization is available for specific regional requirements.
How much maintenance does the machine require?
Daily cleaning and 50-hour lubrication checks are recommended. Gearbox oil requires annual replacement. With proper maintenance, core pressing components typically last 3–5 years under normal operating conditions.
Can I press oil without roasting the seeds first?
Yes, cold pressing mode allows direct feeding of raw seeds. However, hot pressing after proper roasting significantly improves oil yield and extraction efficiency for most oil seeds
What is the difference between a screw press and a hydraulic press?
Screw presses operate continuously with higher capacity, integrated filtration, and suitability for seeds with ≤40% oil content. Hydraulic presses use static pressure, ideal for high-oil-content seeds (>40%) like sesame and walnut, producing premium-quality oil with lower temperatures
Ready to Start Your Oil Pressing Business?
Contact Taizy Machinery today for a customized screw oil press solution tailored to your specific seeds, capacity requirements, and local power conditions. Our engineering team provides free consultation, detailed quotations, and comprehensive after-sales support to ensure your oil extraction operation succeeds from day one.
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