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Hydraulic Screw Cold and Hot Oil press machine is suitable for the pressing of various materials: sesame, walnut, chestnut, cashew, pine nuts, baobab seed, cocoa butter, Argan nuts, avocados, olives, grape seeds, camellia seeds, prickly pear seeds etc.

Raw material

suitable to all kinds of oil seeds, eg: sunflower, soybean, sesame, rapeseed, peanut, cotton seed, corn germ, walnut, almond, castor seed etc.

Working priciple

Generally, sunflower oil production line does the following manufacturing processes: cleaning of the seeds, grinding of the seeds, pressing and extracting crude oil from these seeds, and then further refining the oil obtained before packaging.
Cleaning the Seeds
The harvested oil-bearing seeds are passed over magnets to remove any metal traces, and other impurities are being got rid of by cleaning sieve and destoners. Then the outer covering (hulls) of the seeds are removed to obtain pure seeds.
Grinding the Seeds
The de-hulled seeds are ground into coarse meal to provide a larger surface area to be pressed. Hammer mills or grooved rollers are used to crush the coarse meal into uniform fine particles. Then the meal is heated to enable oil extraction, though impurities are released with oil during this process and such impurities should be removed before the oil is declared edible.
Pressing
The heated meal is fed into a screw oil press which progressively, at the same time, the oil is squeezed out through the slots in the barrel and recovered.
Refining of the Oil
Oil refining involves removal of the bitterness, color, and odor. First, the oil is heated at temperatures between 40 0C and 85 0C. Then it’s mixed with an alkaline substance like sodium carbonate or sodium hydroxide. The oils are degummed by treating them with heated water at temperatures between 85 0C and 95 0C or with acidified water. This precipitates out most of the gums usually phosphatides. Then centrifugation is done to remove the dregs.

Advantage

As a leading oil mill machinery supplier in China, we have earned good reputation in the world’s oil making industry by supplying premium quality machinery and turnkey projects, ranging from small scale to large scale. With rich experience and professional engineering, we are your best choice for the vegetable oil production line, including sesame oil production line, sunflower oil production line and more.

Product Specification

Company Profile

We are a large-sized joint-equity enterprise which is specialized in producing edible oil mechanical equipment and it is also a group enterprise integrating scientific research, manufacturing, and sales as one. Our company has been in long-term cooperation with Research Institute of Machine Design Company of Henan, Henan University of Technology (formerly the Zhengzhou Grain College) school-enterprise cooperation in the oil equipment, protein extraction, phospholipid extraction, etc. R &D and application of new technologies.

Service

Pre-sale services
1) Selecting equipment type;
2) Designing and fabricating the products in accordance with the special requirements of the clients;
3) Training technical personnel for our clients;
4) Providing construction and technology consultations or working out proper construction schemes for those new, special or difficult projects.
After-sale services
1) Assisting the clients preparing for the first construction scheme;
2) Installing and testing the equipment;
3) Training the first-line operators on site;
4)Supplying spare parts with cost.

FAQ

Q: Why work with your company ?
A: We have 40 years experience in oil press machine industry, and we can help you find a great solution that can save your cost and reach your production targets. Our main products including :screw oil press, oil filter, oil refinery machine and spare parts etc.
Q: How can I judge your machine quality ?
A: Actually we already got good reputations in Russia and The Five Countries in Central Asia because of our service and stable quality. All of our machines can provide 1 year warranty and lifetime maintenance, for core parts are 6 months warranty.
Q: If i don’t know how to operate this machine ? How can i do ?
A: Our engineer will help you from the starts, and machine has been tested and fully assembled before shipping, you just needs to make 2-4 hours wear-in and then can work.
Q: What’s wear-in for new machine?
A: Using 10 KG oil cake + 1 KG sand + 1 KG water, mix them, put in oil press, wear in 3~4 hours.
1. 1st hour, adjust oil cake thickness as 3 mm.
2. 2nd hour, adjust oil cake thickness as 2.5 mm.
3. 3rd hour, adjust oil cake thickness as 2 mm.
Q:What are cold press and hot press?
A: Cold press is pressing dry and raw seeds. usually need to press 2 times to get maximum oil.
Hot press is pressing roasted seeds. usually only 1 time to get maximum oil. peanuts roast to 125~130 degree with 1~2% moisture.
Q:What service do you provide?
A: (1) 1 year free warranty, whole lifetime maintenance.
(2) Supplying wearing parts all year around.
(3) Supplying technical solutions at any time.
(4) Helping design and plan the oil plants construction.
(5) Providing installation video.
(6) Developing agents with good policies around world.

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