What Maintenance Is Required for a Sesame Oil Extraction Machine?

Sesame oil extractor is the core equipment of edible oil production. Its operation stability and service life directly affect the quality and production efficiency of edible oil. Scientific and systematic maintenance can not only reduce failure rate, but also significantly enhance oil yield. This paper describes the main points of maintenance from six aspects: routine cleaning, lubrication of key parts, precision parts maintenance, electrical system inspection, seasonal maintenance and long-term storage management.
1.Daily cleaning: core measures to prevent oxidation and Contamination
1.1 Immediate Residue Removal
Remove the oil residue oil and cake fragments from the pressing chamber, screw shaft and filter screens immediately after each squeeze. Over time, Accumulated residues and forms stubborn scales, reducing oil yield and potentially contaminating oil with mold. Deep clean using a food-grade soft brush paired with neutral detergent, with special attention to hidden areas such as screw shaft gaps and ballast inner walls. For high-phospholipid raw materials (e.g. peanuts, rapeseed), weekly flushing with food-grade alkaline solutions is used to dissolve gelatinous deposits.
1.2 Periodically replace filters
Filter screens is the key to oil purity. Depending on production intensity, the screen is checked every three to five days to replace blocked or damaged screens in a timely manner. For microporous membranes (5-micron filtration accuracy), immerse in a special cleaning agents and backwash with a high-pressure air gun to avoid physical damage.
2.Key Components: reducing wear and extending service life
2.1 Drive System Lubrication
Gear box and Bearings: high temperature lithium based grease (ISO VG68 grade) is replenished every 3 months. Replace oil seals and inspect for abnormal wear. For chain-driven models, clean chain gaps weekly with a brush and apply rust-resistant lubricant.
Main Shaft Bearings: lubricant after 200 hours of continuous operation. During operation, if temperature exceeds 65°C, the operation should be stopped to inspect for lubrication. For mug types, check oil levels at the end of each shift to ensure adequate fuel levels.
2.2 Screw Shaft Repair and adjustment of studs
Check lube every 50 working hours. Make sure oil cups in reduction gearboxes remain full. It is forbidden to Inject grease into adjusting adjustment screw bearings through adjusting holes during each gear shift-drying operation. After long use, if rotation resistance resistance increases remove and clean the screw shaft, then reapply molybdenum disulfide grease.
3. Precision Component Maintenance: ensure Efficient Pressing
3.1 Pressure chamber inner Chamber Inner Wall Polishing
Use 800 + sandpaper every month to polish the interior walls along the texture lines and press bars to contact raw materials. This reduces friction resistance by over 15% and increases oil yield. After polishing, wipe the surface with anhydrous ethanol to remove metal debris.
3.2 Oil Outlet Slot Cleaning
Circular and striped extrusion assemblies have outlet grooves that are critical to the flow of oil. If output declines, remove the chamber to inspect for blockage. Use a dedicated probe (0.5-1mm in diameter) to clean the grooves-avoid scraping with metal tools to prevent surface damage.
4. Electrical System Inspection: Guaranteeing safe operation
4.1 Contactor Maintenance
Dust contactors with electronic scrubbers are installed quarterly in the cabinet to prevent arc oxidation-induced control failures. If contact erosion occurs, sand surfaces flat and apply conductive paste to maintain contact resistance below 0.1Ω.
4.2 Motor Thermal Management
Install a dust filters on the motor cooling fan and wash it quarterly. In winter, replace hydraulic fluid with a cryogenic grade (such as ISO VG32) and preheat it on empty for 10 minutes before operation to prevent seal from brittle.
4.3 Insulation Performance Testing
dehumidification heating modules of control cabinet is activated daily during wet season. During the rainy season, place Place silica gel desiccants in the gearbox of the gearbox. Test motor insulation resistance in terabytes every six months to make sure the value exceeds 1 terabyte.
V. Seasonal maintenance: adapting to environmental change
5.1 Rust resistance during wet season.
During monsoon season, place place moisture in an electric cabinet and check for color changes weekly. For long idle equipment, the metal surface should be coated with food-grade rust oil and sealed with a dust covers.
5.2 Winter Preheating Protocols
Pre-heat hydraulic system to 20 before running in winter. If equipped with PLC control, backup parameters to prevent data loss due to power outages. Install equipment indoors at freezing temperatures to prevent parts from contracting and deforming.
6. Long-Term Storage Management: prevention of ageing of equipment
6.1 Comprehensive Maintenance Procedure
After seasonal production, perform the following steps for long-term storage:
Disassemble screw shafts, press and cake discharge ring; clean with diesel and coated withrust oil.
Drain the remaining oil from the tank and replace it with filtered fresh oil.
Check motor winding insulation and repair aging wiring.
Wrap drive element in plastic to keep out the dust.
6.2 Pre-Startup Inspection
Before restarting after long-term storage:
Rotate components manually to make sure no jamming.
A 30-minute onboard test was conducted to monitor temperature/pressure parameters.
Initial pressing using low humidity raw materials to gradually enter the equipment
7.Emergency Fault Handling: Rapid Production Recovery
7.1 Screw Shaft Seizure
If the raw material is hard or not insufficient preheating cause seizure:
Cut power, turn on discharge plates.
Reverse screw shaft rotation to remove chamber contents.
Gradually add hot ingredients (80°C+) and grind repeatedly.
7.2 Oil Yield Decline
If production declines by >10%, investigate these reasons:
Inappropriate moisture content of ingredients (optimal range range 6-8%%).
chamber temperature (keep 120-180°C).
Clogged oil outlet slots or worn components requiring cleaning/replacement.
8. Maintenance of records management: Data-Driven Optimization
Establish electronic maintenance archives to record the timing, content, replacement of components and anomalies of each service. Faults can be predicted early by Data analysis, e.g. by shortening the replacement period of lubricating oil, which may indicate bearing wear, and fluctuations in oil yield, which may indicate failure of pressure cell temperature control. Prepare equipment maintenance reports regularly and direct equipment upgrades.
Conclusion:
The maintenance of Sesame oil extraction machine requires systematic maintenance according to equipment characteristics, raw material characteristics and environmental conditions. Preventive maintenance strategies can reduce failure rates by up to 40% (as shown by practical applications), while increasing oil yield by 2-5%. Manufacturers should incorporate maintenance into quality management and adopt standardized procedures to ensure long-term stability of the equipment.