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Last month, a plantation owner from Indonesia asked for help through WhatsApp: He spent $3,000 to buy an imported screw oil press. It was fine when pressing crops such as palm, peanuts, and rapeseed, but when pressing high-quality Cold-pressed oils such as coconut and walnut, he found that the machine would heat up and affect the natural flavor of the oil, which had a certain impact on sales. What’s worse, as a novice, he always had a little trouble in maintenance. This is not an isolated case – we have seen too many people facing similar challenges.
Today, I’ll spend 5 minutes helping you thoroughly understand two crucial things: how to choose between hydraulic mesin penekan minyak and screw oil press machine? From working principles to practical applications, I’ll guide you step by step to lock in the most suitable oil press machine.
Following my approach, next time you purchase oil extraction equipment, you’ll be like an industry veteran, determining the most suitable machine for your needs within three minutes.
What is a Screw Oil Press Machine?
When many people first enter the edible oil processing industry, their first impression is the wide variety of oil presses on the market. Some of them were slick enough, but they were not always efficient enough in actual shop conditions–particularly in small and medium-sized shops. At this time, everyone will find that the screw oil press is unique.
Screw oil press is a compact oil pressing machine that continuously squeezes oil through a rotating screw. It is widely used to extract edible oil from more than 20 oil crops such as palm, peanut, soybean, coconut, walnut, almond, sunflower seed, rapeseed, sesame, castor seed, flax seed, etc. The seeds are swallowed by the inlet and forced by the screw inside the chamber inside. It works through a simple mechanism that is highly effective hence the importance of understanding its workings to help you appreciate why it has been the mainstay in most oil pressing applications.
Working Principle & Core Features.
Screw oil presses work by pressing the oil seeds into the barrel and a screw rotates pressing the seeds forward. The movement of the screw pressurizes the space in the chamber, forcing seed cells apart and forcing oil out through small holes in the barrel, rupturing cells in the process (this is similar to squeezing toothpaste). The solids by-product or oil cake is enabled to come out at a different outlet so that the process can run continuously.
Many of GQ-Agri’s screw oil presses are equipped with temperature control systems, allowing operators to easily preheat the oilseeds and maintain the temperature during the oil pressing process for optimal oil production without compromising oil quality(For hot-pressed oil production, it is recommended to pre-roast the oilseeds using a roasting machine to the desired temperature and moisture content, depending on the crop type.). Oil yield can be balanced with respect to cake quality by varying screw speed and amount of pressure applied. It is designed such that it can run 24 hours with a processing capacity of 50-800 kg of raw materials per hour depending on machine models and crop type.
Widely expanded crop suitability is one of the biggest benefits of the screw oil press that equally uses palm fruit, peanuts, soybeans, sunflower seeds, rapeseed, sesame and over 20 other oil-bearing materials. Multi-staged pressing also increases the yield of oil more than the hydraulic press where the virgin oil meal could be reprocessed to get more oil. But screw press crude oil generally has more impurities and phospholipids, which makes it dark yellow-brown in color and subject to filtration prior to use. The combination of very high daily output, high flexibility, and good performance yield have ensured that the screw oil press became the flagship of a number commercial edible oil units globally.
Overall, the screw oil press machine is characterized by stability and uninterrupted functioning and excellent versatility in most types of oil seeds. Its multi-stage pressing and temperature control ability, which is optional, help to enhance the collection of the oil turning it into the favorite of most of the manufacturers of edible oil. The necessity of post-press filtration and routine maintenance should be kept in mind, though. Then we will discuss one more important player in the oil extraction hydraulic oil press machine analyzing the differences in the features and usage as well as the most appropriate oil production environment.
Drum Roasting Machine!
To achieve optimal oil yield from a screw press, precise moisture and temperature control is crucial. Our roasting machine can evenly roast oilseeds (peanuts, soybeans, rapeseed, etc.) to achieve the required temperature and ideal moisture content of 5%-11% for the specific variety. This can reduce the residual oil rate in the cake, enhance the fluidity of oil inside the raw material, and increase the oil yield by 3-6%.
What is a Hydraulic Oil Press Machine?
After going past screw oil presses, I soon found that certain oil pressing jobs need a little softer hand-especially when it comes to making high quality, nutrient dense cold-presses oils. That is where the hydraulic oil press machine comes in. A hydraulic oil press extracts oil from seeds and nuts by using high hydraulic pressure to apply force slowly and evenly to the material. As opposed to the swift but steady motion of a screw press, the hydraulic presses work with utmost precision that seems ideal for delicate oilseeds such as sesame, walnut, almond, olive, Avocados, and coconut.
The oils produced by these machines are cold-pressed oils that have a high value as gourmet cooking oil or cosmetics-grade oils as they do not undergo heat pressure. Their availability in the form of compact and easy to use models allowed it to be used by the small-scale artisans as well as the commercial producers which required quality than speed.
The working principle and core features of hydraulic press.
Hydraulic oil press works under principle of high-pressure hydraulic pump which moves the oil through a pipe into piston system. This piston slowly comes down on cakes of seeds or nuts previously compressed(The raw materials wrapped in filter cloth appear in a cake-like shape.), and put into a specially shaped pressing cage. It is similar to a robust hydraulic jack–slow, smooth and controlled–pushing oil out without producing waste heat. Such a slow, consistent pressure is the critical aspect of the cold pressing and retains the natural flavor, aroma and nutrient content of the oil, at the same time not destroying the delicate components subjected to heat. The extracted oil still retains the original hue of its raw materials, for example coconut oil and olive oil will not appear golden despite being mixed and processed.
There are a number of advantages of this design. The low temperature and gentle extraction method results in superior oil clarity and flavor and is appropriate for a high-value seed like sesame, walnut and almond. The hydraulic system’s adjustable pressure control and monitoring instrumentation allow for flexible pressure control for different oilseeds without damaging sensitive flavors. The operation is also very low-key and low energy efficient and very suitable to environmentally restricted urban settings or noise sensitive settings. Hydraulic presses have a long service life due to their simple structure, low requirements of maintenance and stability in performances. Their flexibility is extended to a wide list of oil crops, and their real strength would come in manufacturing high-standard cold pressed oils, where quality over the quantity that is produced would lie.
An exceptional alternative to the producers who value the quality of oil and the preservation of natural flavour is the hydraulic oil press machine. Although they require lower production than screw presses, they have a gentle cold press oil process ensuring exceptional purity and nutrient retention and thus they are suited to high-end, cold-pressed oil markets. Next, it is time to get into the main distinctions between screw and hydraulic oil presses and compare their performance, prices, and applications scenarios to shed more light on which press is the most adequate choice regarding oil seed processing purposes.
Comparison Table of Screw Oil Press and Hydraulic Oil Press. | ||
| Comparison Item | Mesin Penekan Minyak Skru | Mesin Penekan Minyak Hidraulik |
| Applicable Oil Material Range | Palm, peanuts, soybeans, sunflower seeds, rapeseed, sesame, walnuts, coconut, and almost all common oil materials | Sesame, walnuts, almonds, olives, avocados, and other high-value, cold presses materials |
| Kualiti Minyak | Hot pressing process, relatively poor color, transparency, and flavor | Low-temperature process throughout, color, transparency, and flavor superior to screw hot-pressed oil |
| Production Efficiency | Relatively high | Relatively slow |
| Equipment Investment | Initial investment is small | Initial equipment investment is high |
| Kerumitan Operasi | Operation is relatively complex, requiring monitoring of parameters such as feed rate, chamber temperature, discharge conditions, and oil yield to optimize oil yield. | The operation is simple and even inexperienced operators can get started after simple training. |
| Maintenance | After years of use, maintenance becomes complex, as the screw, plunger, and bearings will wear out, requiring specialized skills for maintenance and replacement. | Maintenance is simple, and the main wearing parts after years of use are seals and hydraulic pipes. |
| Energy Consumption Level | Depending on the model, high-output models will consume relatively higher energy because they require a high-power motor. | Depending on the model, high-output models will consume relatively higher energy because they require a high-power motor. |
| Floor Space | Large floor space, greater length, requires reserved space for feeding, cake discharge, and maintenance | Small floor space, vertical structure, greater height but small floor area, can arrange multiple units in narrow spaces |
| Target Market | Bulk oil wholesale, regional oil mills, diversified operations | Premium oil retail, high-end customization |
From Indonesian palm plantations to African peanut cooperatives, from Thai coconut oil workshops to Brazilian soybean processing plants, we’ve witnessed too many success cases due to correct equipment selection, and also seen lessons from blind following that resulted in losses.
Hydraulic oil press machine and screw oil press machine each have their merits. The key is finding the one that matches your business model, market positioning, and financial strength.
As the professional team at GQ Agri, we’re not just equipment suppliers but strategic partners for your oil extraction business. Get personalized oil press machine configuration solutions for free by contacting our technical experts. Whether you’re planning to invest in large scale production lines or looking for suitable oil press equipment for small workshops, we’ll provide the most professional advice and cost-effective solutions based on your specific needs.
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What crops are suitable for screw oil press machine?
Screw oil press machine is ideal for high-yield, large scale processing of crops like soybeans, peanuts, rapeseed, sunflower seeds, and flaxseed. They offer high oil yield and continuous operation, making them suitable for industrial oil extraction.
What crops are suitable for hydraulic oil press machine?
Hydraulic oil press machine is best for high-oil-content, delicate seeds such as sesame, walnuts, almonds, olives, Avocados, and cocoa beans. They produce high quality oil with minimal processing through cold presses technology.
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