What is the difference between hydraulic oil press and screw oil press?

Hydraulic oil press and screw oil press are the main kinds of oil press used in cooking oil production industry, and they have their own advantages and disadvantages. If you don't know how to choose them, Henan Glory Company will introduce you the difference of hydraulic oil press and screw oil press, through the advantages and disadvantages. You can choose suitable oil press to use based on your needs.

1. The introduction of hydraulic oil press

Hydraulic oil press uses physical way to extract oil, and the oil quality is better. Hydraulic oil press is easy to operate and cost less, usually used in family or small scale oil extraction production line. The hydraulic oil press is suitable for cold pressing, especially for sesame, peanut, walnut and so on.

(1) Advantages of hydraulic oil press
Compared with ordinary screw oil press, hydraulic oil press is environmental protection and energy saving. There is less noise during operating. It is physical pressing without heating, no addition of any chemical substances. The major advantages of the hydraulic oil press is that the pressure of the equipment is hydrostatic, and the mechanical friction of the oil is very small, so the oil is very clean and can be consumed directly without any treatment.

(2) Disadvantages of hydraulic oil press
Different from screw oil press, the hydraulic oil press is a closed hydraulic system, if only part of the leakage of oil will make the whole machine useless. Oil yield rate is relatively low, with a single function and low automation.

2. The introduction of screw oil press

Different from hydraulic oil press, the screw oil press presses the oil by continuously pushing the screw shaft forward and squeezing the material. Henan Glory Company provide three types of screw oil press: single screw oil press, screw oil press with automatic temperature control system and screw oil press equipped with vacuum filtration system and automatic temperature control system. Specially, screw oil press equipped with vacuum filtration system and automatic temperature control system is very popular among the small investors. The oil quality is clear and pure with less foam and impurities after pressing.

(1) Advantages of screw oil press
As the screw oil press goes through 3-4 times of squeezing, the oil yield is higher than that of a hydraulic oil press with a single squeeze. And because of the simple mechanical structure of the left and right screw presses, it’s more durable and stable. It also has different model for different processing capacity. Screw oil press is reasonably designed with advanced performance and is suitable for various oil seeds pressing, such as soybean, peanut, cottonseed, sunflower seeds and so on. It can be pressed directly, saving time and costs. The invest cost for the screw oil press is less and the processing capacity is high.

(2) Disadvantages of screw oil press
While screw oil press produces high temperature during work, it will It destroys the nutrients in the oil. The oil has a black appearance and high phospholipid contact. It is necessary to equip a centrifugal filter for fine filtration.

The above is Henan Glory company's introduction of the advantages and disadvantages of hydraulic oil press and screw oil press to make you more aware of their differences and make better choices. We hope that it can be helpful for you. Please feel free to leave a message on our website if you still have any questions.

Contact information：

My Whatsapp/Wechat: +86 13526627860
https://www.cookingoilmillmachinery.com
https://www.doingoilmachine.com
https://www.cookingoilmillmachinery.com/cooking_oil_press/
Email: market@doinggroup.com

What is the difference between pressing technology and solvent extraction technology of cooking oil ? Which one is the best?

Many people are curious about what is the difference between pressing technology and solvent extraction technology of cooking oil and which one is the best. Today, Henan Glory Company will make a simple analysis. The difference between pressing technology and solvent extraction technology are mainly in terms of processing technique, raw materials and oil yield etc. If you are interested, please read on!

Different in processing technique

The pressing technology is a physical method of pressing oil seeds with the help of human or mechanical means to squeeze the oil out. The pressing technology involves cleaning, crushing, flaking, cooking and pressing to squeeze the oil out. While the solvent extraction technology is a chemical extraction method, using the mutual solubility of oil seeds and selected solvent - hexane to extract crude oil. It is currently recognized as the international advanced and excellent processing technology.

Different in raw materials

The pressing technology and solvent extraction technology of cooking oil are applicable for different raw materials respectively. The pressing technology is mainly applicable to the processing of high oil content oil seeds (such as peanuts, sunflower seeds, rapeseed etc.) or the processing of oil seeds that require the retention of the specific flavour. (such as peanut oil, sesame oil, etc.) While the solvent extraction technology is suitable to the production of low oil content oil seeds. (such as soybeans, rice bran etc.) This technology has the overwhelming advantages of high oil yield, large processing capacity and high degree of automation.

Different in oil yield

The two processing technologies are also different in terms of oil yield. The residual oil in the cake after pressing by using the pressing technology is relatively higher, at 7-8%. Instead, using the solvent extraction technology to extract oil, the residual oil rate in the cake can be controlled at less than 1%.

As for which one is the best, each processing technology has its own characteristics and advantages. It is not possible to say which processing technology is the best, as the saying goes, fitness is the best. Although the press technology has a higher residual oil rate compared to the solvent extraction technology , it has lower investment costs.

For both of these processing technologies, Henan Glory Company recommends that you should choose pressing technology if your daily processing is below 20tons/day or have the limited budgets. But if your daily processing capacity keeps above 50tons/day, our engineers advice you to choose solvent extraction technology. Of course, using both pressing and solvent extraction technology in the same plant will make you get great economic benefits. Welcome to make an order!

If you are interested, welcome to chat with me.

My Whatsapp/Wechat: +86 13526627860.
◆https://www.palmoilextractionmachine.com
◆https://www.chinamachinerymanufacturer.com
E-mail: market@doinggroup.com