The working principle of castor oil press Generally speaking, the general process of extracting oil is due to the propelling effect of the rotating screw shaft in the press chamber, which reduces the volume of the press chamber and produces continuous pressing on the material.

Castor seed is grown commercially on plantations but also harvested from wild plants.  The seed must be hulled after harvesting. This can be done laboriously by hand or, more commonly, by machine. Small-scale hand-operated dehullers are available.
The seeds contain about 50 percent oil by weight. To extract the oil they must be crushed and pressed with hydraulic or continuous screw pressing at high or low temperature.  High temperature hydraulic pressing yields 80 percent of available oil.  Further solvent extraction can release much of the remaining oil.
Modification of the oil is achieved by a variety of chemical processes including oxidation, hydrogenation and thermal treatments to produce products for specific applications.

Simple structure, easy to use, adaptable, high oil rate, energysaving, and low noise.Material selection is exquisite, reasonable design, beautiful shape, reliable quality.
Simple operation, less land occupation, labor saving, power saving, high yield, and oil quality is good, and so on.
All technical indexes are leading in the same trade of the stateowned oil press. And the model of 6YL-80 and 6YL-100 are the new type products reformed by our factory engineers,which are the advanced equipment in the oilseeds processing machinery recently.

The working principle of castor oil press Generally speaking, the general process of extracting oil is due to the propelling effect of the rotating screw shaft in the press chamber, which reduces the volume of the press chamber and produces continuous pressing on the material.

The basic process of squeezing oil is generally divided into three stages: feed pre-compression (low pressure) section; main squeezing (high pressure oil output) section; cake and drain (stabilization) section.

1. The feeding mechanism of this machine is changed to a V-belt wheel and equipped with a tensioning wheel mechanism, which can adjust the tightness of the V-belt at any time to make the feeding more stable.

2. The gear box adopts helical gear design, which makes the screw shaft press more stable, high transmission efficiency and low noise

3. Reasonable structure, large production capacity, low residual oil, simple operation and other performances are better than other similar products

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1. Process flow The process for preparing castor oil is as follows:

Castor seeds-cleaning-broken-softening-rolling-steaming and frying-pressing-crude castor oil

2. Operation points: Crush the castor bean into 3-4 petals, and the gap between the rollers is 2–2.5mm when rolling the. When steaming and frying, the moisture (incoming squeezing moisture) from the raw material to the discharge port is 1%-1.5%, the squeezing temperature is 130°C, the thickness of the pressed cake is 1.5-2.0mm, and the residual oil content of the dry cake is controlled to 6 %–8%.