Soybean Extraction Machine

Introduction

In modern society processing plants extract soybean oil by solvent liquid transfer whereby the soya beans are cleaned then they are cracked, dehulled and later conditioned into a thin flake before they enter the extractor for oil removal. The commercial or industrial soya bean oil extracting system is mainly composed of the seed cleaning and crushing plant, the softener, the presser and refiner and the extruder and roller.

In the seed cleaner there is a magnetic separator which removes impurities such as nails, wires and iron. In the cleaner bean stems and pods are also removed.

The cleaned beans are taken to the crusher where the beans are crushed and separated from soybean skin and from bean kernels. The beans are broken to about four to eight valves. The preferred crusher is the tooth rolled with cutting impact and bending effect such as the KMPSJ series which has a little noise and uniform output. Crushing helps increase the surface area of oil seed. The process is conducive to the transfer of temperature and temperature and moisture in softening process of oil seed ensuring a softening effect.

Next step is softened in order to adjust the oil seed moisture and temperature to improve its elasticity for the best condition for the rolling process. The softening temperature is based on the level of moisture in the soybean. If the moisture is ranging from 13%-15% the temperature should be between 70℃-80℃ which takes about 15-30minutes. The commonly used softener is the horizontal softening pot which helps avoid abrasion of scraper and heating layer hence long life. Softening reduces power degree and the sticky roller phenomenon.

Extruding then takes place where the crushed and rolled soybeans are put into a porous expanded granular material. It requires a high temperature for a short processing time i.e. 110℃-200℃ which lasts between one to three minutes.

During rolling the oil seed is graduated from a granular level to flake. This helps destroy the cell structure of the oil seed. It also increases the surface area of seeds and shortens the distance of the oil flowing out. Moisture and temperature of the materials should be controlled.

The flake is then taken for pressing where it is squeezed and pressed and under pressure oil seeps out through the press cage gaps and gathers into oil reservoirs. The oil extracted is then filtered to remove solid particles.

The oil is later refined, packed and transported for sale.

Technical Parameters

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