Before we delve into troubleshooting and maintenance, it's essential to understand how a screw oil press functions in sesame oil production. The screw oil press operates on a simple yet effective principle. As sesame seeds are fed into the hopper, a rotating screw conveyor pushes the seeds through a narrow chamber. The increasing pressure and friction within the chamber cause the oil to be squeezed out of the seeds, which then flows through small openings into a collection trough.
This continuous process makes the screw oil press a popular choice for small and medium - sized oil mills. Its ability to handle large volumes of sesame seeds in a relatively short time is a significant advantage. But like any machinery, it is prone to certain issues that can affect its performance.
One of the most common problems is poor oil output. This could be due to several factors, such as improper seed moisture content, worn - out parts, or incorrect temperature settings. To diagnose this issue, start by checking the moisture content of the sesame seeds. The ideal moisture level for sesame seeds before pressing is around 6% - 8%. If the seeds are too dry or too wet, it can significantly reduce the oil extraction rate.
Next, inspect the screw and the pressing chamber for signs of wear. Worn - out parts can lead to reduced pressure and inefficient oil extraction. A simple way to check is to look for excessive gaps or rough surfaces on these components. If the parts are worn, consider replacing them to restore optimal performance.
An overheating motor is another frequent problem. This can be caused by overloading the machine, lack of proper ventilation, or a malfunctioning cooling system. To quickly diagnose this issue, check if the motor is running at its rated capacity. If you are feeding too many seeds into the machine at once, it can cause the motor to work harder and overheat.
Ensure that the motor has adequate ventilation. Clean any dust or debris that may be blocking the ventilation holes. If the problem persists, there could be an issue with the cooling system, such as a faulty fan or coolant leak. In such cases, it's advisable to consult a professional technician.
Screw blockage can occur when foreign objects enter the machine or when the seeds are not properly processed. To diagnose this problem, listen for unusual noises coming from the machine. A blocked screw will often cause the motor to make a grinding or straining sound. If you suspect a blockage, stop the machine immediately and remove the screw for inspection. Clear any debris or foreign objects carefully.
Regular lubrication is crucial for the smooth operation of the screw oil press. Lubricate all moving parts, such as the screw shaft, bearings, and gears, at least once a week. Using high - quality lubricants can reduce friction and wear. Studies have shown that regular lubrication can reduce wear on moving parts by up to 25%, extending the overall lifespan of the machine.
After each use, clean the machine thoroughly. Remove any remaining seeds, oil residues, and dust from the hopper, pressing chamber, and collection trough. A clean machine not only operates more efficiently but also reduces the risk of corrosion and mechanical failures. Use a soft brush and a mild cleaning agent to avoid damaging the machine's surfaces.
Check all the bolts and nuts regularly to ensure they are properly tightened. Loose fasteners can cause vibrations and misalignments, which can damage the machine over time. Additionally, monitor the temperature of the pressing chamber during operation. The ideal temperature for sesame oil extraction is between 120 - 130°C. Maintaining the correct temperature can improve the oil extraction rate and the quality of the oil.
Proper maintenance can significantly extend the lifespan of your screw oil press. On average, a well - maintained screw oil press can have a 30% longer service life compared to a poorly maintained one. This means fewer replacement costs and more consistent production over time.
Moreover, regular maintenance can also improve the oil extraction rate. By ensuring that the machine is in optimal condition, you can increase the amount of oil extracted from each ton of sesame seeds by 3% - 5%. This directly translates into higher profits for your business.
When comparing the screw oil press with the hydraulic oil press, the screw oil press has several advantages in continuous operation scenarios. The screw oil press can operate continuously without the need for frequent pauses, making it more suitable for large - scale production. However, it also requires more attention to maintenance due to its complex mechanical structure.
On the other hand, the hydraulic oil press is more suitable for small - batch production and can produce higher - quality oil in some cases. But it has a slower production speed and may not be as efficient for large - volume processing.
Many users have reported significant improvements in their oil production after following these maintenance and troubleshooting tips. For example, Mr. Smith, a small - scale oil mill owner, was able to increase his daily oil output by 15% after properly maintaining his screw oil press and adjusting the temperature settings.
Your equipment may also face similar issues. Have you ever encountered any of the problems mentioned above? Share your experiences in the comment section below. Let's learn from each other and optimize the performance of our screw oil presses.
