Small Oil Pressing Machine - Leader Machinery

industrial oil press machine

The industrial screw press is a larger product developed by our company to meet the development needs of the oil processing industry and to continuously summarize the practical experience of production. The main features are: large processing capacity, long press stroke of the blank in the pressing, and further improvement of the pressing pressure, thereby improving the oil production efficiency and reducing the residual oil rate of the dry cake; and the wearing parts are made of high-quality alloy steel. Significantly increase the service life.

The industrial screw press is suitable for pressing a variety of vegetable oils such as rapeseed, cottonseed, soybean, peanut kernel, flax seed, tung seed, sunflower seed and palm kernel. The product has the characteristics of small investment, large output, simple matching, easy maintenance and strong adaptability. Compared with similar machines in the market, it has more significant advantages in cost-effectiveness, especially suitable for small and medium-sized oil processing plants.
The basic process of the oil press process is as follows:
1. Conventional production process: raw material - steamed - press - machine oil
2. Special oil production process: oilseeds--fried seeds--squeezing--filtration--flavor oil
3 special oil production process: oilseeds - whole seed cold pressing - filtration - cold pressed grease
The oil is squeezed out of the oil process: When the oil enters the press of the oil press, the pressure increases as the squeeze rotates. The seed material is continuously squeezed with the extrusion of the oil, and the pressure of the directly contacted material particles causes mutual plastic deformation of the seed material, especially at the rupture of the oil film and bonding. Thus, after being extruded and fried, the material is not loose, but forms a plastic body called a cake. Due to the dual effects of temperature and pressure during pressing, the protein will continue to deteriorate, which in turn affects the plasticity of the material. In short, the proper degree of protein denaturation can ensure the best crushing effect.
Industrial oil press advantages:
No chemical is added during the production process using this equipment.
The raw material of the oil press, that is, the oil crop is divided into plant raw materials and animal raw materials according to the type. In the general production process, we mainly use plant raw materials. The plant raw materials are divided into legumes, seed families and hemps. The following is a brief description of China's oil crops:

Peanuts are annual herbaceous plants. It is also an important oil crop with many varieties. The chemical composition of peanuts is: 5.33%~9.16%, oil 44.27%~53.86%, carbohydrate 9.89%~23.62%, protein 23.96%~33.94%, phospholipid 0.5%~ 1.5%, crude fiber 2.67% ~ 5.26%, ash 1.75% ~ 2.58% It can be seen that peanut contains a lot of oil (fat) and protein, is a good oil crop, of which protein 23.96% ~ 33.94% than lean pork, The protein of beef and mutton is 1.5-2.5 times higher; it is 5-13 times higher than rice and flour, and the protein has a high digestibility coefficient. It is rich in amino acids required by the human body; vitamin B1 B6 and vitamin D, E and calcium phosphate. Minerals. China's peanut planting area ranks second in the world. For a long time, peanut products have been well received by consumers. However, the fly in the ointment is that "the peanut fat content is high, and the taste is too greasy when eating, which leads to a series of polylipid diseases in the human body. The oil raw materials in North China are generally peanuts.

Sesame: (scientific name: Sesamum indicum) is a seed of flax. Although its close relatives appear in Africa, the natural origin of the breed is still unknown. It is found throughout the tropics of the world. Sesame is one of the top four edible oil crops in China and one of the major oil crops in China. Sesame products have high application value. Its seeds contain up to 61% oil. Since ancient times, China has a lot of famous foods and delicious dishes made with sesame and sesame oil, which has been known all over the world. Sesame flowers are solitary, or two or three clusters are born in leafhoppers. Cylindrical, lip-shaped, sesame (14 photos) reddish, purple, white. Due to the variety, the number of edges of long cylindrical capsules varies from 4.6.8. The seeds are oblate, white, yellow, brownish red or black. The white seeds have higher oil content. The black seeds are used as medicines, which are sweet and flat. They have the functions of nourishing liver and kidney, moistening dryness and laxative. Sesame oil contains a lot of essential fatty acids, and the content of linoleic acid is as high as 43.7%, which is higher than that of vegetable oil and peanut oil. Aromatic oil can be extracted from the stems, leaves and flowers of sesame seeds. The oil produced by pressing sesame is called sesame oil, which is fragrant and rich, and is an important seasoning and cooking oil.
Rapeseed, also known as oil cabbage, bitter vegetables, is the tender stems and leaves of cruciferous rapeseed, native to China, dark green color, help for cabbage, is a cross-flower cabbage variety. The north and south are widely cultivated and are available for production in all seasons. Rape contains a variety of nutrients and contains a lot of vitamin C. Northern Brassica napus is native to western China and is widely distributed in China's northwest, north, Inner Mongolia, and Yangtze River basins.
Flaxseed: Flaxseed is an oil crop. Flaxseed oil contains a large amount of unsaturated fatty acids, so it is used to prevent hyperlipidemia and atherosclerosis. The surface of the seeds of flax is reddish brown or taupe, tan, a few golden yellow and white, the surface is smooth and shiny, the oil content is 30% - 45%, linseed oil is rich in unsaturated fatty acids such as linolenic acid and linoleic acid, especially It is rich in essential a-linolenic acid and r-linolenic acid, of which a-linolenic acid accounts for 57% of linseed fatty acid and 2 times higher than fish oil. It can lower blood pressure, serum cholesterol and blood viscosity of the human body, and has therapeutic effects on cancer, cardiovascular disease, visceral disease, kidney disease, skin disease, arthritis, lung disease and immune system disease. More than 30 countries such as the United Kingdom and France have approved linseed oil as a nutritional supplement or functional food. The oil extracted from the seeds of the flax family linen. Flaxseed contains 30% to 48% of oil. The oil obtained by pressing at room temperature is a yellow liquid with a specific odor. The texture gradually becomes thicker in the air, and the color gradually becomes darker. The main component of the oil contains linolenic acid and linoleic acid. , oleic acid and palmitic acid, stearic acid and other glyceric acids. In addition, it also contains an organic compound such as a decyl ferulate, various anthraquinones, triterpenoids, and cyanogenic compounds. Flax oil is mainly used as an industrial raw material for coatings, inks, tarpaulins and rubber. A small number of areas have traditionally been used as edible oils. Have a certain medicinal value.

Industrial oil press principle process
(1) Peanut is a crop with high oil content. Its internal oil is surrounded by a layer of closed film in the form of spheres or granules. In the process of external extrusion, this layer of film and cell wall When they rupture together, the peanut oil flows out of the crack; during the extrusion process, the oil in the peanut is partially squeezed out, the peanut becomes brittle and hard, and the original elasticity is lost; while the peanut red contains more fiber and is under pressure. After that, it is separated from the surface of the peanut, so that the peanut red dress is easy to fall off; during the extrusion process, the peanut is subjected to pressure rather than shearing force, so there is no broken kernel phenomenon, and it is easy to restore the original state;
(2) According to the fat content requirements, different pressures are applied respectively. Degreased peanuts with different effects can be obtained.
Process
Process requirements: the degreasing rate of peanuts is more than 50%; the peanuts are intact without granules, there is no adhesion between peanuts, and the peanuts are easy to fall off. The important factor affecting the degreasing effect is water. The secondary factor is time. The best condition for achieving the degreasing effect is 4.52%--7.26%. (The moisture exceeding the standard affects the oil yield and the moisture is too dry, which may cause the high breaking rate of Huasheng.)
Peanut oil production process
Peanut kernel - temperature controlled drying - raw material package - pressure - defatted peanut kernel
in conclusion
Under certain conditions of pressure, certain moisture, certain temperature and time, peanuts can be pressed with a hydraulic oil press to obtain apricot yellow, original flavor, fragrant smell, pure peanut oil and degreasing effect. Peanuts.

Industrial oil press maintenance
Lubrication should be checked after every 50 hours of operation. The oil cup on the reduction gear box must not be deficient in oil. The source screw shaft should be adjusted from the adjustment screw hole to add the grease once.
Each lubricating part should be protected from dust and other impurities. Check the oil quality of the gearbox once a year. If it is found to be deteriorated, replace all oil.
When the pressing amount is reduced and the cake or oil is not normal, the screw shaft should be taken out to check the wear of the screw, the strip, the cake head and the cake outlet, and the worn parts should be replaced in time.
After each work, the residual cake in the machine should be removed and the dust and dirt on the surface of the machine should be wiped clean.
When storing for a long time after the end of the production season, maintenance should be carried out once, and the snails, the squeezed strips, the cake heads should be removed and washed and reapplied and placed in a dry place.
After each oil extraction, the screw shaft should be removed to clean the residue, and the rotating port should be scrubbed with a dry cloth and a cotton swab to prevent clogging.
Industrial oil press common fault

Raw material moisture is low
The squeaking sound is heard in the squeezer of the oil press, causing the entire oil press to vibrate;
The cake can not be broken into pieces and is dark brown with focal spots;
The power motor load current is higher than 30 amps;
The position of the oil is moved to the direction of the cake, and the cake is smoked with green smoke, the oil is reduced, and the oil color is dark brown.
If the above phenomenon lasts for too long, it will cause a major mechanical damage accident. At this time, it is necessary to immediately reduce the steam pressure, increase the direct steam injection amount in the upper steaming cylinder, close the small discharge door, reduce the feeding to the squeeze cage, increase the thickness of the cake, and gradually reduce the load of the press, and then add Adjust to return to normal working condition.
High moisture content of raw materials
1. When the raw material moisture is high, the following phenomena will occur: 1. The feed is small, or even the feed is not required, or the material rotates together with the shaft;
2. The cake is loose and soft, with a lot of water vapor, and the cake is oiled. When the cake is out, the cake rotates with the shaft;
3. The motor load drops and the working current is below 20 amps;
4. The oil output is reduced, the oil color is white, foaming, and the oil discharge position is moved to one end of the feed. In the above situation, the indirect steam pressure should be gradually increased gradually, the direct steam injection amount should be reduced, and some slag cake should be added to the feed port until the oil press returns to the normal state. [1]

Pressing method
There are two methods for extracting edible oil from plants. The chemical extraction method and the physical oil extraction method are also known as the leaching method (chemical) and pressing method (physical).
Pressing method: The pressing method has a long history, and its process is relatively simple: after steaming the oil and frying it, the oil is squeezed out of the oil by mechanical means. The ancient pressing method requires heavy manual labor for the operator. In the extruded oil residue (oil cake), the residual oil content is quite high, thus wasting extremely valuable oil resources. The modern pressing method has been the operation of industrial automation, but the problem of high residual oil content in the oil residue cannot be solved.
From the pretreatment of the pressed raw materials to distinguish between the cold pressing method and the hot pressing method, also known as the cooked pressing method. Cold pressing means that the raw materials are directly put into the oil press without being roasted or steamed. The oil is relatively light in color and brighter in color, but the oil yield is low, and the oil taste is not strong. . The ripening is to dry the oil crops before pressing, in order to reduce the moisture of the raw materials, increase the activity and fluidity of the oil molecules, thereby increasing the oil yield and ensuring the flavor of the oil. But it also destroys the chemical composition of the oil, causing the oil to be darker and darker.

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