First, the classification of oil press 1. Hydraulic mechanism oil Spiral oil extraction mechanism Oil screw oil press is a kind of crushing and oil-making equipment that is currently used more. It has the advantages of large continuous processing capacity, short dynamic pressing time, high oil yield and low labor intensity. 3. New hydraulic oil press At present, a new type of hydraulic oil press has appeared on the market, which has improved the shortcomings of the hydraulic press in the past. The single machine uses very little electricity, covers an area of ​​only a few square meters, and is connected with a computer controller to achieve production. Automation. The oil press maintains the advantages of simple structure and long service life of the hydraulic press, and the oil flavor produced by the oil press is thicker than that of the general oil press, and it does not foam during eating. 4. Squeeze and integrated oil press 1. Increased the number of pressing stages: from the original two-stage press to the third-stage press, upgrading from the original three-stage press to the fourth-stage press and five-stage press, effectively improving the oil yield. Second, the identification method of the pressing series of the oil press Secondary press: only one high pressure round row (wide round row)
Also known as hydraulic oil press, it has now been largely replaced by screw oil system oil. It is a static oil-making system with low oil yield, small single machine, large equipment and large floor space. The workshop needs heat preservation and poor operating conditions. However, the hydraulic mechanism oil has the advantages of simple structure and power saving. It can be applied to the grinding of some scattered oils (such as rice bran, wild oil) and oils (such as cocoa beans, olives, sesame seeds, etc.) that need to maintain special flavor or nutrition. Pulp hydraulic oil. In addition, it can also be used for press separation of solid fat or wax crucible.
2, spiral oil
The main part of the screw press is the squeezing, which consists of a squeeze cage and a screw shaft that rotates inside the squeeze cage. The working process is to reduce the spiral lead of the screw shaft or gradually increase the diameter of the root circle, so that the volume of the pressing space is continuously reduced to produce a pressing effect; the pressed oil is squeezed out from the gap of the pressing cage, and the residue is removed. Pressed into a crumb cake, which is continuously discharged from the end of the shaft. Pressing oil extraction can be divided into three stages: feeding (pre-pressing) section, main pressing (oiling) section, and forming cake (heavy pressure draining) section.
2. Increased the size of the pressing: adjust the pitch, increase the pressing pressure, and further improve the oil yield.
3. Adding the squeezing oil guiding tank: In order to prevent the extruded oil from being immersed again into the dried cake slag, an oil guiding groove is arranged in the squeezing device of the equipment, so that the oil and the cake are quickly separated, and the oil yield is improved.
Three-stage press: two high-pressure round rows (wide round row)
Four-stage press: three high-pressure round rows (wide round row)
Five-stage press: four high-pressure round rows (wide round row)