What Safety Precautions Should Be Taken When Using a Peanut Oil Extraction Machine?

As core equipment of petroleum processing industry, the safe operation of Peanut is directly related to people's health, equipment lifespan and production efficiency. Based on the industry standard and practical cases, this paper summarizes the whole process of safety considerations from equipment startup to shutdown, and provides scientific guidance for operators.
Safety preparation before equipment is activated.
1.Environment and Equipment Inspection
Before operation, ensure that the work area is dry and ventilated, away from fire and corrosive substances. Check that the base of the equipment is stable and the protective sleeve of rotating parts is intact to prevent accidental damage from exposed machinery. For example, one peanut oil extraction plant had experienced a fracture in the operator's arm as a result of a lack of belt pulley protection, which could have been avoided by regularly checking the protective gear.
2.Power system testing
the motor's insulation resistance resistance of bituminous mixtures shall be tested using a 500V megohmmeter to ensure that it is not less than 0.5 megabytes. Verify the grounding line reliability, grounding resistance is less than 4 Omega. Three people were electrocuted in a food processing factory due to an electrical leakage of equipment, highlighting the need for electrical safety testing.
3.Lubrication System Maintenance
Lubricate according to equipment instructions. A screw oil press requires 30# mechanical oil for a reduction gearbox and a plant hydraulic oil for a hydraulic system. Replace filters regularly to prevent metal particles from entering the lubrication system. Because the company did not replace the filter in time, leading to shaft bearing wear, equipment shutdown, resulting in direct losses of more than $100,000.
ii. Safety regulations during operation
1.Raw Material Preprocessing Requirements
Impurity Control: Peanut ingredients require air separation and sifting to remove hard impurities, such as rocks and metals. A peanut oil extraction workshop had a screw shaft breakage accident due to raw materials not removing nails, maintenance costs reached 23,000 yuan.
Moisture Adjustment: Use a rapid moisture tester to control the moisture content of raw materials entering the press to 4% -5%. Too much moisture tends to clog the ballast, and too little moisture can increase wear and tear on equipment. Experimental data shows that the temperature of the export cake fluctuated by 15 ° C when the water content deviated from the standard value by 15%.
Temperature management: During the thermal pressure process, the roasting temperature of seeds should be controlled between 120 and130 degrees Celsius and monitored in real time with infrared thermometers. A company has recalled products for failing to properly control temperature, causing peanut oil acid value to be too high.
2. Equipment operation monitoring
Pressure Monitoring: The working pressure of the screw oil press should be maintained between 15 and20MPa and observed in real time through the pressure gauge. When the pressure suddenly exceeds 25MPa, close the device immediately and check the pressure chamber for blockage.
Temperature Monitoring: The outlet temperature of the pressing chamber shall not exceed 200°C and the cake temperature of the cake shall be controlled between 80 and90°C. At one point, a workshop failed to install a temperature alarm device, causing the equipment to overheat and catch fire, causing significant property losses.
Abnormal Sound Identification: The normal operating noise of the device should be less than 85dB. Periodic knocking sounds may indicate axial movement the screw shaft, while continuous friction sounds indicate bearing damage requiring immediate downtime.
3. Operational Prohibitions
Metal tools are prohibited: when feed hopper blocked, only wooden or plastic tools can be used for digging. A lack of safety training has been exposed after an operator was electrocuted while using wire cleaning equipment.
Overload is prohibited: when the equipment is rated at 50 kg/h, continuous operation time shall not exceed 8 hours. A workshop has been working 12 hours, production deadlines, resulting in motor burnout, maintenance costs of 18000 yuan.
Prohibition of Maintenance Under Pressure: Before maintaining the hydraulic system, the pressure must be released to 0MPa, and a "Do Not Switch On" warning sign should be hung. maintenance worker failed to release pressure before removing the oil pipe, causing damage from a high-pressure oil spray.
III. Safety considerations during Shutdown and maintenance
1. Standardized Shutdown Procedures
Drain: cake scraps should be fed into the chamber before closing to prevent leftover material from oxidizing and spoiling. On one occasion, a company failed to empty the compressor on the next start, leading to equipment being scrapped and causing the chamber to explode.
Power off operation: First, power off the control cabinet, then disconnect the master switch. maintenance worker can cause arcing burns to the face if they operate in the incorrect order.
Cooling Measures: After continuous operation, an axial flow fan should be used to force cooling, equipment temperature below 50°C before cleaning.
2. Maintenance and Upkeep Standards
Cleaning standards: use of food-grade cleaning agents to remove oil stains, ban the use of flammable solvents such as gasoline. Three people have been killed in an explosion at a workshop caused by the use of petrol equipment cleaning.
1. Lubrication cycle: reduction gearbox shall be lubricated every 500 hours and bearings shall be lubricated monthly with 2# lithium grease. A lack of lubrication tripled the cost of maintaining one piece of equipment, causing gear to wear out.
Spare Parts management: establish service life record of key components, screw shaft must be replaced after 800 use of 800 hours. One company continued to use frayed studs, leading to a compression chamber rupture.
IV. INTRODUCTION Emergency Response Mechanisms
1. Fire response
Fire Extinguisher Configuration: 2 4kg dry powder fire extinguishers per 50 sq m and CO2 in motor areas.
Emergency Response Procedures: In the event of a fire, immediately cut off power supply and sprinkle fire extinguishers on the bottom of the source. One workshop failed to extinguish the fire in time, causing the blaze to spread throughout the plant.
2. Mechanical Injury Treatment
Emergency preparedness: Have a first aid kit in the work area, containing tourniquets, sanitizing gauze and other items.
Hospitalization Criteria: For serious injuries such as limb amputation, wrap the amputated limb in a clean cloth, keep it at 4 degrees Celsius, and send it to a hospital immediately.
3. Power failure Handling
Power outage operation: pull the circuit breaker down with an insulating rod and do not touch live parts directly with your hands.
Professional maintenance: Electrical faults must be handled by a qualified electrician. A company has had two accidents due to unprofessional repairs.
V. Personnel Training and Management of personnel
1.Safety training system
Three levels of education: new employees must go through factory level, workshop level, squadlevel safety training, assessment qualified before they can take up their duties.
Annual safety retraining: organize at least 16 hours of safety retraining each year, focusing on updating the modified operating specifications of equipment.
2.Operational Qualification Management
Certification Requirements: key position operators must obtain special equipment operating credentials. A company was been fined $50,000 for using uncertified personnel.
Skill Assessment: quarterly hands-on assessment focusing on emergency response capabilities.
3.Building a culture of Safety
Hidden trouble detection: Establish a safety inspection system with全员 participation of the head teacher, and reward employees who discover important hidden trouble.
Incident sharing: Organize regular accident case analysis meetings. One company used case studies to reduce the recurrence rate of similar accidents by 70%.
Conclusion:
The safe operation of peanut oil extraction machine is a systematic engineering, from equipment selection, installation to routine maintenance, the whole process needs to be controlled. Through the establishment of standard operating procedures, improve contingency planning, strengthen personnel training, effectively reduce accident rate. Data shows that companies that implement system safety management can reduce equipment failure rates by 65% and injury accidents to people by 90%. It is suggested that industry supervisory authority should speed up the formulation of safety technical specification for peanut oil extraction machines and promote the improvement of safety production level throughout the industry.