To extract oil from rapeseed, you need to use an oil press to extract oil.
The oil press refers to squeezing the grease out of the oil with the help of mechanical external force.
Oil press classification:
1. Water Press oil press
Also known as hydraulic oil press, it has been basically replaced by screw press oil press. It is a static oil production with low oil yield, small single machine performance, large equipment and large floor space. The workshop needs to be insulated and the operating conditions are poor. However, hydraulic machine oil has the advantages of simple structure and energy saving. It can be used for grinding some scattered oils (such as rice bran, wild oils) and oils that need to maintain special flavor or nutrition (such as cocoa beans, olives, sesame, etc.) Slurry pressing oil. In addition, it can also be used to press and separate solid fat or wax bran.
2. Spiral oil production
Screw oil press machine oil The screw oil press is a pressing oil production equipment that is widely used at present. It has the advantages of large continuous processing capacity, short dynamic pressing time, high oil yield, and low labor intensity.
The main part of the screw oil press is the pressing chamber, which is composed of the pressing cage and the spiral shaft rotating in the pressing cage. Its working process is to use the reduction of the spiral lead of the screw shaft or the gradual increase of the diameter of the root circle to continuously reduce the volume of the pressing chamber space to produce a squeezing effect; the squeezed oil is squeezed out from the gap of the pressing cage, and at the same time, the residue is Press into crumb-like cake pieces and continuously discharge them from the end of the pressing shaft. Generally speaking, oil extraction by pressing can be divided into three stages: the feeding (prepressing) section, the main pressing (oil extraction) section, and the cake forming (heavy pressure oil draining) section.
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 past hydraulic oil press in all aspects. It can be used as a single machine. It uses very little electricity, occupies only a few square meters, and is connected to a computer controller to automate production. This type of oil press continues to maintain the advantages of a hydraulic oil press with a simple structure and long service life. The oil produced has a stronger aroma than ordinary oil presses and does not foam during consumption, making it widely welcomed by consumers.
4. High-efficiency fine filtration oil press
Adopts the principle of multi-stage advancement and gradual pressurization, which increases the pressure in the pressing chamber and squeezes and extracts oil to the maximum extent; in order to avoid The extruded grease is immersed back into the dry cake residue again. The equipment's uniquely designed oil guide groove inside the pressing chamber allows the oil and cake to be quickly separated, greatly increasing the oil yield. This design has won the national utility model patent.