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Today, as we announced a few s estions to improve the oil yield of the screw press 
Now a question to buy screw press equipment and people have been buying oil press equipment are concerned about is how to improve the oil yield press, we FRIST machinery round of press row than any other each row of press pounds more oil 2-3 pounds. We improve the screw press as we announced a few major oil yield for reference purposes only. 
1, into the water and squeeze juice into temperature Numerous facts have proven, despite good control of the machine behavior, but because of the water and into the juice squeezed temperature control bad or unstable, equally difficult to produce normal results. Pressed into the material moisture and temperature directly affects the physical properties and chemical processes embryo. The results of theoretical research Description: Material embryo should have the appropriate moisture and temperature, that the material is better embryo mobility, oil viscosity and surface tension to minimize, to ensure proper embryo material plasticity and flexibility, in order to maintain normal virgin bore pressure . The actual experiment also showed that: the embryo into the virgin material moisture content of not less than a pie limit, while the pressing temperature range suitable for 110 ~ 130 ℃. If the water is too high, it will make the material produces clumps affect embryo oil; contrary water is too low, the material embryos are squeezed into a powder, easily coking breech block instead. Similarly, if the temperature is too high in carbohydrates coking material embryo, protein and other ingredients are destroyed, oil discoloration deep, affecting oil quality; Conversely, when the temperature is too low, can not form a normal physical changes and biochemical conditions. Juice into the water and the temperature is usually achieved by the pretreatment process. Practice has proved that, in general, the use of hot pressing method in terms of efficiency and economic benefits of oil significantly better than cold-pressed. Using cold-pressed method, will cause an increase in the number of press, the processing is greatly reduced, increasing the dry cake residual rate, significantly increased energy consumption, economic decline. Need to point out that when using cold-pressed, due to high moisture content of oil, squeezing the head and said cake easily broken; press a second time, easily overhead in the hopper, the impact of the feed and the need to constantly stir, operational problems, efficiency is not Jia. Therefore, where possible should try using hot pressing method. 
  2, quality extra virgin bore pressure to take oil press law, is to remove the oil pressure feed embryo. Impact of virgin bore pressure is mainly due to the cake thickness, the feed quantity and quality of pretreatment (juice into water and temperature, etc.). The cake thickness and oil efficiency important relationship. The thicker the bread, squeeze the smaller bore pressure, the load is smaller, low oil efficiency; conversely, the thinner the cake, the high oil efficiency. However, when thin, but will increase the machine load, causing the accident. Feed should be controlled in a moderate amount of traffic, in order to avoid bridging phenomenon, maintain normal and stable virgin bore pressure. 
  3, press time; press time there is a certain relationship between the oil and the efficiency. Is generally believed that the long press time, the more diffuse out of the grease, but the time can not be squeezed too long, otherwise the heat loss is more, but affect the efficiency and capacity of the oil. Therefore, under the premise of efficiency to meet the oil, squeeze as much as possible to shorten the time. Virgin material breech of the embryo in the residence time depends mainly on the speed of the screw shaft, followed by pressing the thickness of the screw pressing the newness and the cake circle. For some high fuel oil, may be extended press time, should select the appropriate speed. Screw press belongs to the high-speed pizza, so-called high-speed means faster spindle speed, feed embryos remain in the virgin bore in a short time (usually only tens of seconds); called pizza pie is pointed out that the thickness of 1.5 to 3 mm, therefore, pressing Lo and pressing rings and other wear and tear quite quickly. According to experience, usually 40 to 50 tons per processing rapeseed need to check and replace part of the wearing parts (especially the pressing screw and tune cake head). Due to the short time press screw press, for some oil (such as cold-pressed soy, protein retention, etc.) is good, but other dry cake residual oil to further reduce the rate to be subject to certain restrictions, for different fuel, should there is a corresponding spindle speed. 
4, virgin bore temperature pressing process, pressing the chamber temperature directly affects the efficiency of the oil, the oil quality. Pressing the chamber temperature is heated from the outside to produce mature embryos Fu ring and pressing the screw shaft surface friction heat, the heat, the metal body to compensate the heat loss of the internal friction of the material flip embryo produced to maintain the desired optimum temperature for the press . But the virgin bore temperature is too high, can lead to fat and even fat coke cake color deepened, increasing the total oil loss. Therefore, we must establish normal relations virgin bore thermal equilibrium. Environmental processing site environment, shall comply with the oil process requirements. Prepare the necessary production tools and auxiliary processes (such as pre-treatment and reprocessing) equipment, to improve production efficiency, reduce inefficiencies and ensure the process.

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