By pressing the quality of edible oil is also has exquisite and varieties

Quality we use press press of edible oil also has exquisite and varieties. People come to the conclusion that in the practice of life: eat vegetable oil benefits, can avoid the cholesterol, elevated blood lipids, beneficial to the prevention of cardiovascular disease. In fact, overlooked is that vegetable oil also can't eat too much.vegetable oil plant contains rich unsaturated fatty acid, this substance is very easy to auto oxidation of toxic peroxides, resulting from a vegetable oil and produce too much not saturated fatty acid, so that increased the peroxidase. According to the related literature at home and abroad research, peroxide will make a variety of vitamins, especially vitamin C oxidative decomposition, loss of normal function, thereby affecting the absorption of vitamins used by the body, causes the body's vitamin deficiency. Peroxide may also make the red cell membrane of human body with the mitochondrial membrane damage, the occurrence of hemolysis and other symptoms, and can combine with protein aging pigment lipofuscin formation, to produce age spots on the skin. In addition, the peroxide formation in the vessel wall, liver, cell, can produce arteriosclerosis, cirrhosis of the liver, cerebral thrombosis and other symptoms. Nutritionists believe that eating "fit oil" is the effective method. When the food to 2 vegetable oil and add 1 animal oil, obtained reasonable proportion of saturated fatty acids and unsaturated fatty acids of both, this can increase the delicious food, and not easy to cause disease.
Three is the use of stress. Method of cooking fried, grilled, steamed, boiled, stewed, braised and other characteristics of the enriched our life of diet, but in a variety of cooking, fried, fried and other cooking methods easily lead to the problem of food safety. Lipid peroxide, heterocyclic amines, benzopyrene are harmful substance to form a food fried in the cooking process, most of which have been proved to be a strong carcinogen.


Use the press of the wise remark of an experienced person

Choose a, oil press
A good oil can make the user less trouble in oil processing. The choice of models can be processed rapeseed, soybean, peanut, cotton seed, tea seed and other granular fuel. Purchase at first the paint evenly machine appearance, check whether the lack of machine parts, and then hand to turn the big belt wheel, make it more turn a few laps, as to whether there is iron foreign bodies such as check the squeezing chamber, there is no jamming phenomenon, at the same time pay attention to whether the normal gear box gear.
The correct installation, press two
Before installation, press to cope with the new purchase a thorough cleaning. Out of the spindle, remove the upper pressing cage, with emery cloth the screw, the inner surface and the outer surface of the spiral feeder polished. Of all the parts of the lubrication grease, lubricating oil additive in the gear box, the varieties and grades shall conform to the specification requirements. The round row after polished, installed in the original location must be according to the arrangement, not because of dislocation, round row arrangement position and sequence greatly for oil performance relationship. The round exhaust after installed with a compression nut pressing, pressing degree to the disc in the oil can peristalsis is appropriate. Press after the above treatment, can be used for anchor bolt fixed on the basis of. When in installation, the belt pulley of the motor should be and the press pulley alignment, position of moderate, the correct direction of rotation of the drive belt, elastic degree should be adjusted properly.
The use of three,  vegetable oil plant
Before using the press, first of all should be ready all auxiliary utensils and containers, check and adjust the tightness degree of the driving belt. And then start the motor, so that the machine idling about 15min, check the squeezing screw shaft speed. The general speed should be about 33dmin. Idling should pay attention to meshing gear in the gear box and the sound is normal, each part of bearing and motor is normal. Press idling, the motor current is about 3A. If the current is too high, should immediately stop check, adjustment after the boot.
No-load normal, prepared about 50kg of rapeseed or soy, ready to be put into the feed hopper. Note: start pressing feeding can not be too fast, otherwise the squeezing chamber pressure suddenly increases, screw axis does not move, causing the press bore blockage, even make the squeezing cage rupture, the occurrence of major accidents. Thus began the compression, the feed should be evenly and slowly into the hopper, the oil mill was running. So repeatedly, lasted for 3 ~ 4H above, so that the temperature of oil press gradually increase, or even smoke (which is normal). Start pressing the pressing chamber temperature is low, slow twisting, handle adjusting studs, increase out of cake thickness, while improving the pressing blank moisture to be pressing chamber temperature. Up to 90 DEG C, press machine normal operation, can be out of cake thickness to 1.5 ~ 2.5mm, and the fastening nut.
Press normal operation, high oil content of oil out of the oil is mostly concentrated in a row and the row at the former group round. A row of the oil accounted for about 60% of the output of oil, the former group round row at about 30%; and the end of the discharge of oil into the drop is very few, not a line, color is very clear. Repeated two or three times can be pressed rapeseed or soy oil juice, during which can be squeezed diesel oil are evenly mixed one blank, when feeding to maintain uniform, avoid by all means is suddenly more and less, otherwise it will affect the oil press life and oil rate.
In the process of running, should always check the cake case press machine, and control the blank of water is neither too high nor too low. Normal a cake should be flaky, by squeezing screw shaft surface smooth, the other side has a lot of hair lines. Such as bread or cake loose and weak, not forming, deep color, a pinch of that into pieces by hand, and this shows that the blank too little; such as cake weak, into a large shape, or the oil bubble increased explain too much water. Under normal circumstances, not or rarely slag slag round between the rows, in a row at the slag, such as slag is fine flake that more water, powder residue that less water. In addition, in order to oil position change can see entry squeeze water is appropriate, when pressing the moisture content is too high or too low, oil position backwards.
Four, to meet the requirements of pretreatment process
Blank pressing before, must pass through the pretreatment process, pretreatment quality will directly affect the normal work of press and oil rate. Different oil required pretreatment procedure, different, but mainly includes the following several:
1 clean. Into the processing plant oil contains some impurities (sand, gravel, iron and so on), if not carefully cleaning, will wear accelerated internal parts of oil press, lower oil yield, even cause failure and accident. Its corollary equipment: cleaning sieve, Stoner, magnetic separator and so.
The 2 shelling. For shell oil, should be shelling again after pressing, which can improve the production capacity and oil rate. Its corollary equipment: peeling machine, separating sieve, separator etc..
3 broken. Some of the oil can monolith pressing, but after crushing, flaking and then press, can significantly improve the oil yield. And its ancillary equipment: crusher, flaking machine etc..
4 cooking. Cooking is an important link in improving oil yield, the commonly used method is the first oil wetting, and then by the wok dry, make the oil meet the process requirements of the pressing temperature and moisture, and its supporting equipment: steaming and frying pan, cooking pot.


What are genetically modified foods

The so-called genetically modified foods, is the use of biotechnology, gene transfer to other organisms of certain species to transform the genetic material of organisms to convert them to the desired target in the human character, nutritional quality, quality and other aspects of consumption, transgenic organisms for direct food or as raw material for food processing is to genetically modified food dehydrator.
Depending on genetically modified food sources can be divided into plant genetically modified food, genetically modified yeast vaccines, antibiotics, genetically engineered bacteria, animal and microbial genetically modified food genetically modified foods.


Vegetable fats and oils

vegetable oil plant from fatty acids and glycerol is a compound made of natural polymer, is widely distributed in nature. All from plant seeds, pulp and other parts of the plant extract obtained collectively fat oils.

Species of edible vegetable oil
Currently there are families of edible vegetable oil, peanut oil, rapeseed oil, soybean oil, cottonseed oil, sesame oil, sunflower oil, a lot of species. To identify the various oils, it is necessary to understand the characteristics of various types of oil.
Peanut oil: oil color yello
w, fine smell peanut flavor, oil foam micro white.
Rapeseed oil: greenish, fragrant taste in the mouth a little spicy, oil foam yellow.
Soybean Oil: Oil deep yellow color, beany large mouth taste astringency, oil foam white.
Cottonseed oil: Oil yellowish color, no taste tasting, oil foam yellow.
Sesame oil: reddish brown, smell, taste has a deep flavor.
Sunflower oil: color, clear and transparent, aromatic and delicious.


the classification of oil mill plant

one. mechanism, hydraulic pressure oil
Also known as hydraulic oil, now has basically been replaced by the mechanism of oil screw press. It belongs to static oil, the oil rate is low, single and small, oil equipment  and covers an area of large oil mill plant, workshop to be insulated, poor operating conditions. But the pressure mechanism of oil has the advantages of simple structure, saving power, it can be applied to some scattered oil (such as rice bran, wild oil) and oil need to maintain the special flavor and nutrition (such as cocoa beans, olive, sesame etc.) pulping of hydraulic oil. In addition, also can be used for solid squeezing separation fat or wax bran.
Two, the mechanism of spiral oil press oil
The mechanism of spiral oil press oil expeller oil mill plant is a widely used device for oil processing. It has large processing capacity, continuous, dynamic press time is short, high oil yield, low labor intensity.
The main part of screw press is pressing chamber, pressing chamber is the same bar cage and in the squeezing cage rotation of the screw shaft. Its working process is reduced or the root diameter by using screw shaft helical lead gradually increase, narrowing and pressing action pressing chamber volume of space; the extracted oil from pressed cage slit extrusion flow, while the residue pressed into crumb cake, from the shaft end of continuously discharging. Extracting oil generally can be divided into three stages namely feed (pressure) section, main squeeze (oil), into a cake (heavy oil Lek) section.
Three, a new type of hydraulic oil
Currently on the market a hydraulic press model has been improved, in all aspects of deficiency of the hydraulic oil press past, stand-alone power is very small, covers an area of only a few square meters, and is connected with the computer controller, realizes the production automation. The press has continued to maintain a hydraulic press has the advantages of simple structure, long service life, oil flavor produced is thicker than the general press, no foam and edible, widely welcomed by consumers.


Energy saving vegetable oil plant features:

1, not silt, oil quality pure pot.
2, press, cotton seed, tea seed, Tung, must oil mill use this vegetable oil plant . Hot pressing machine can not be replaced.
3, the machine has a dual-purpose machine function, save money, durable.
Control the press is not affected by the climate, the four seasons, because the device adopts the heating temperature control system, according to the environment temperature, oil temperature automatic adjustment, in order to achieve rapid filtration effect, so is not affected by seasons, climate, four seasons can press the camp.
This machine is a squeeze net, time and labor saving,vegetable oil plant  high oil yield, power of small, oily pure, multi use of one machine, can carry out processing on sesame oil, peanut, soybean, rapeseed, sunflower, sesame and other 20 kinds of oil.


oil plant filter integration press make you healthy:

technology using the new press, the mobile press efficient intelligent press refining integration, both in the main oil producing areas in the South and the north are welcome. The press is widely used in peanut, oil machine soybean, rapeseed, sunflower, sesame, walnut, almond, Su Zi, tea seed, cottonseed, sesame, corn and other oil crops. According to the different requirements of temperature oil varieties, can automatically adjust the oil temperature and oil temperature, oil plant not subject to seasonal climate impact, best meet the press condition, throughout the year can be squeezed.
Oil press, let people eat healthy oil, small press oil from the oil plant  rich in nutrient retention, no chemical pollution, does not contain any chemical antiseptic antioxidant, is pressing now take the unique advantages, product safety, purity, nutrition, delicious, a healthy oil generation, has now become the quality family oil mill plant is the most respected living mainly edible oil. Oil press is a kind of widely used pressing oil production equipment. Oil press with large processing capacity, continuous, dynamic press time is short, high oil yield, low labor intensity. Press completely changed the traditional press backward processing methods, creative use machine, electric, press, filter integrated operation. Automatic temperature control, oil plant adjusting the structure design of the pressing chamber, the press screw. Press greatly reduces the labor intensity, shortening the processing time, improve the working environment.


The work principle of oil press:

Oil Press operation, enter the press bore well processed material from the hopper. In the screw axis of rotation, blank continuously pushing, pressing oil. On the one hand, the root circle diameter of the helical axis gradually thickening, pitch decreases gradually, so that material progress in the squeezing chamber, volume are compressed, pressure is increasing continuously, meet the fat separation required pressure. On the other hand, by constantly stock movement in the press the squeezing chamber, in the press bore pressure conditions, the friction resistance greatly between blank and screw, blank and pressing chamber; at the same time the thread that stock in advance at the same time, we turned outwards, material layer can close to the screw thread surface rotates with the shaft, so in the squeezing chamber for each blank particles are not the same speed, direction of movement,oil press machine
 but also has the relative motion between the particles. The heat generated by the movement and meet the required oil process of heat, contribute to the protein thermal denaturation makes material embryo, destruction of the colloid, increase the plasticity, reduce oil viscosity, which makes it easy to precipitate, thus improving the oil press oil rate


The principle of plant oil press

oil processing in operation, the preform processed into the hopper, oil from the hopper into the press bore. Screw a screw to in advance by pressing, the preform is in running condition in the press the squeezing chamber, in the squeezing chamber under conditions of high pressure, friction force between the blank and many of the screw, the press bore. The main is to make the friction material blank and blank, resulting in relative motion. On the other hand, root diameter screw is gradually enlarged, when the screw motion, thread the preform can move forward and can be turned outwards, material layer and near the screw thread surface with the pressing shaft to rotate, so that the oil plant chamber in each blank particles are not equal with Fang Xiangyun. The particles also exist between the relative motion. There is friction heat and meet a heat required for oil of process operation, help to promote the protein thermal denaturation of billet, destruction of the colloid, increased the plastic, but also reduce the oil viscosity, easy to press out the oil, thus improving the oil press oil rate.


Comparison of the advantages of hydraulic press:

Advanced design, reliable performance, simple operation, convenient maintenance:
Its main feature is the:
The high rate of oil -- compared with the old equipment, the cold oil press yield can be up to 2 to 3 percentage points.
Use: the use of a machine, can be pressed peanut, sesame, sesame, rapeseed, sunflower, cottonseed, soybean and other 30 kinds of oil crops. Multistage press, a squeeze net.
Pure oil, vacuum filtration residue, protect the oil clean, hygienic and quarantine standards.
Covers an area of small - 10-20 square meters will be able to satisfy the use.
Novel design of electromechanical integration
Scientific design, reasonable structure, convenient operation, safe and stable, automatic device,oil machine from the finished products completed one time only a few minutes.
Excellent material technology of precision
Adopting high carbon steel, the high frequency quenching, heat treatment, high hardness, high strength, good wear resistance, suitable for high temperature high pressure continuous operation, improves the press service life, long use time of up to several decades.
The squeezing chamber reasonable oil rate
By using the principle of multilevel push progressive compression, so that the rapid increase of pressing chamber pressure, the oil disposable fission separation, then the infrared temperature control system, automatic control of press temperature and moisture, so that the oil directly softening activated molecules of oil, press stability, a drain, which greatly improve the oil yield.
Thermostatic frying poured automatically
Frying is good or bad, directly affect the oil quality and oil yield, there are "three press, seven frying" view, visible frying importance in oil extraction process, and the key raw material quality and device frying machine. Our company frying machine adopts gear transmission, the models are mounted damping noise reduction device, oil equipment thick plate and stir chamber volume, available in a variety of heating fuel heating (coal, electricity, gas, heating, such as firewood), extensive frying quickly and other design concepts, greatly improving the frying machine service life and cooking quality, also equipped with oil temperature display instrument, a reversing switch, magnetic features such as advanced equipment, simple operation, high automation level.
High precision filtration is quick and convenient
Use a variety of fine filtration system, increase the oil pressure, oil temperature increased, the new oil guide technology, a new automatic filter, oil filter oil and pure, pressed simultaneously, greatly improving the oil filtering speed, convenient and practical, is the ideal choice for customers.


The hydraulic press

The hydraulic press is the oil pressure, oil press the oil pressure in static state.According to the power source pump has two types of manual and electric; byapplying pressure to the blank form can be divided into vertical and horizontal.Vertical hydraulic oil press (Figure 1) has 1 cylinder is fixed on the base, the cylinderwith cylindrical piston, piston upper part and pie plate are connected into a whole.Blank after pre pressed into a round cake, cake circle coat, with 20 ~ 40 round cakestacked between the pie plate and roof, bread and cake between separated by thinplate with holes, driving the piston top, pressure, oil press cake. Pumps stoppedpressing, pressing after the whereabouts of the piston, the cake unloading, reinstalled on the cake, so repeated intermittent oil, each pressing one of about 2 ~ 5 hours.

The electric pump can form a circulation oil system, control of several hydraulic press operations at the same time. Horizontal hydraulic press. The structure and workingprinciple and vertical is basically the same, the installation is convenient, the oil flow is smooth, cake circle does not accumulate oil; but covers an area of large, need a backpressing with the hammer, a pulley or a screw mechanism. Hydraulic press pressure,a high rate of oil, a few moving parts, convenient repair and maintenance; the labor intensity is big cake handling.


Improve the yield of oil to pay attention to the following points

Oil production efficiency and capacity of technical and economic indexes of machineoil, is the preferred conditions on product evaluation of user. Only meet the pressprocess conditions, and continuous press 24 hours (at least one shift), in order to achieve good economic benefit. Determine the oil efficiency and production capacity,technical and economic indicators, is the mean value refers to the continuous work.So, when pressed to stop or only crush tens of kilograms, hundreds of kilograms ofoil, not to have the good economic benefits, but also not as evaluation of evidence.

It should be pointed out, some users use the "oil rate" (that is, per 100 kg of oil can besqueezed out of several kilograms of fat) concept, this is not scientific argument. How much oil, process, and raw material oil and the rate is related to the mode ofoperation. As a stereotypical screw press, mainly to ensure the oil extraction efficiencyand residual oil rate.

1. the operator

The main reasons are the unskilled, operation skills are not high, don't abide by the rules; be negligent, poor quality consciousness operation; personnel does not close;the effective use of the low rate of equipment.


The new machine while the quality inspection of the factory, but after the storage,handling, transportation, may cause damage. Especially the installation of improper adjustment, assembly quality is poor, not in the correct use and maintenance of safety operation procedures, will enable the machine can not function. Man-made repaircomplex troubleshooting, accident, directly affect the product quality and production capacity. The opening of the new machine, derusting, must be carried out on the press bore running, try pressing, try to raise the pressing chamber temperature in formal pressing, keeping the feed - the cake.

3.pressing oil

High quality raw materials containing impurities, lower level, will directly affect the oilproduction efficiency and capacity. For the harvest, exposure, transportation and storage process, the impurity band into organic impurities (such as plant stems and leaves, husks, grass, hemp rope,

A piece of cloth, paper and all kinds of grain, inorganic impurities such as dust, dirt,gravel, tile, etc.) and oily impurity (pest grain, grain and oilseed not dissimilar metal impurities (such), nails, screws, etc.) shall be cleaned, screening the use of machinery and equipment, and according to the practical application of pretreatment processprocess.

4.Environmental Science

Processing environment, should meet the requirements of oil producing process.Prepare production tools and process the necessary (such as pre processing andreprocessing) equipment, to improve production efficiency, reduce the invalid labor,ensure the machining process


Method for improving oil yield of oil a machine

1 pressing water and pressing temperature

Countless facts have proved, although the machine behavior control is good, but because of pressing water and pressing temperature control is not good or unstable,equally difficult to produce normal effect. Pressing water and temperature affected thestock of physical properties and chemical process.

The results of the theoretical research shows: blank should have the appropriate moisture and temperature, namely blank fluidity, oil viscosity and surface tension tominimize, ensure material embryo plastic and elastic appropriate, to keep pressing chamber pressure is normal. The actual test also indicated that: blank pressing water content can not be less than the limit of the suitable range into cakes, while pressingtemperature 110 ~ 130 ℃.

If the water is too high, will make the material embryo produces clumps of oil andwater; too low, material were pressed into powder, easy to coke instead of blockingbore. Similarly, if the temperature is too high, the material in the embryo carbohydratecoking, protein and other ingredients are destroyed, color darker, affect the oil quality;on the contrary, when the temperature is too low, the physical changes of normal andbiochemical condition cannot form.

Pressing water and temperature, usually by the pretreatment process to achieve.

Practice has proved that, in general, the "hot press method" in the oil extraction efficiency and economic benefit are significantly better than that of cold pressing. The"cold pressing method", will cause the pressing times increasing, daily processing capacity of greatly reduced, residual oil rate increased, consumption increased power,economic decline. It should be pointed out that, by using the cold pressing, because the oil with high moisture content, press the cake is not easy to be broken; secondpress, easily overhead in the hopper, effects of feeding and often stirring,troublesome operation, poor efficiency. Therefore, where possible, should try to use"hot press method".

2, the press bore pressure

The essence of pressing oil, is putting pressure on the stock removal of grease. Main reasons affecting the pressing chamber pressure is the cake thickness, feed quantity and quality of pretreatment (pressing the moisture and temperature etc.). The cakethickness and the oil efficiency relationship. The cake is thicker, the press borepressure is small, load is small, low oil yield; on the contrary, the cake is thin, high oil yield efficiency. But the thin, it will increase the machine load, causing the accident.The feed quantity should be controlled in a moderate flow, in order to avoid the "bypass' 'phenomenon, pressing chamber pressure to maintain the normal stable.

3, the time of pressing

Press time and the efficiency of oil has certain correlation. Generally, press time, oil flows out of a man, but the press time not too long, otherwise more heat loss, but the impact of the oil production efficiency and capacity. Therefore, in the premise ofefficiency of oil, as far as possible to shorten the time of pressing. The residence time of material embryo in the press bore, mainly depend on the screw shaft speed,followed by screw pressing ring recency and cake thickness. For some high oil content oilseed, can prolong the time of pressing, should choose the appropriatespeed.

SYL series spiral oil press belonging to the "high speed Griddle Cake", the so-called"high speed", refers to the spindle speed, feed the embryo in the press bore short residence time (generally only tens of seconds); the so-called "Griddle Cake" is that the cake thickness 1.5 ~ 3 mm, therefore, screw and the pressing ring wear phasequickly when. According to experience, usually 40 ~ 50 tons of rapeseed processingneed to check, partial replacement of wearing parts (especially the 3 - 4 screw and the adjustable cake). Since the 6YL series spiral oil press press time is short, for some oil (such as soybean protein and cold pressing, etc.) is good, but other oilfurther reduce residual oil rate is subject to certain restrictions, for different fuel, there should be a corresponding spindle speed.

4, pressing chamber temperature

The process of squeezing, squeezing chamber temperature directly affects theefficiency of oil, oil quality. The squeezing chamber temperature internal frictioncaused by external Fu heating mature embryo and pressing ring and the screw shaftsurface friction heat, stock turnover and heat generation, compensation metal bodyheat loss, to maintain the proper temperature required by the press. Howeverpressing chamber temperature is too high, will lead to oil and cake color even coke,total oils loss increased. Therefore, must establish the press bore heat balance between normal.