Investment in sunflower oil machinery and equipment businessmen know that the first step in oil refining is the pretreatment of sunflower seeds, and then the extraction stage and refining process, oil pretreatment is to clean up the oil entrapped in the sediment, metal, stem and leaf impurities, separated from the oil mixed in the seed, deflated seed. In the process of harvesting, drying, transportation and storage, oilseeds are inevitably mixed with some impurities such as stones, sediment, stems and leaves, twine and so on. Although there has been a primary selection, but in the transportation to the oil plant, will still be part of the impurities, which generally contains 1% -6% or so, these impurities are extremely unfavorable to the oil production, need to be cleaned up.

Impurities contained in the oil is no more than inorganic impurities, organic impurities and oil impurities in three categories. Inorganic impurities are mainly dust, sand, stones, tiles, metals, etc.; organic impurities are mainly stems and leaves, hulls, artemisia, twine, a variety of grain particles, etc.; oil-containing impurities are mainly insect pests and diseases of particles, unsubstantial particles and heterogeneous oilseeds, etc.. Purpose of cleaning up: put into the processing of oilseeds to clean up, in order to remove all kinds of impurities, 

For oil production has the following practical significance:

1, It can improve the oil yield

The vast majority of impurities, because it does not contain oil, if not removed beforehand and let it mix in the oil for pressing or leaching, will adsorb the corresponding amount of oil and stay in the cake meal, so that the oil yield is reduced. If there is too much mud in the oil, it will reduce the plasticity of the embryo, make it loose, can not withstand greater pressure, and make the oil blocked or sticky oil, affecting the oil yield. Therefore, in addition to clean impurities can improve the oil yield.

2, It can improve the quality of oil and cake meal

Oil contained in the soil, plant stems and leaves, hulls and other organic impurities, will deepen the color of the oil, sediment increases, refining consumption increases. As for the cake and meal, some can be used as raw materials for food and chemical products, if too many impurities, will reduce the value of cake and meal. Some impurities are even harmful to humans and animals, for example, in rapeseed even if mixed with a small amount of tung seed, or sunflower seeds mixed with a small amount of castor seed, the production of oil and cake meal can not be consumed, and can not be done feed. With the rapid development of the food industry and other people to improve the quality of oil and cake meal requirements are increasingly high, therefore, to remove impurities in the oil has more and more important significance.

3,Reduce the wear and tear of equipment

Sediment, stones, metal and other impurities on the equipment have a strong friction effect, so that a variety of machine parts quickly wear and tear, the service life is greatly reduced. Metal, stone and other hard impurities, fast running speed and high pressure equipment is more harmful, easy to make the parts damaged. Therefore, clean up impurities will reduce wear and tear of machine parts and extend the service life of the equipment.

4, Avoid production accidents

Metal impurities into the running speed and pressure equipment (such as shelling machine, embryo rolling machine, oil press), will damage the equipment causing accidents. Oil in the hemp rope, artemisia and other long-fiber impurities, it is easy to entangle in the operation of the rotating shaft of the equipment, affecting the process results, increase power consumption, and even block the import and export of equipment, resulting in production accidents or equipment failure. Therefore, to remove such impurities is conducive to ensuring the smooth progress of production.

5, Increase the handling capacity of the equipment

Impurities in the oil in the corresponding volume, the more impurities in the oil, the greater the volume occupied, especially the stems and leaves and hulls. Remove the impurities in the oil, accordingly can reduce the burden on the equipment, increase the handling capacity of the equipment.

6, It can improve production conditions

The dust contained in the oil in the transportation and processing will cause dusty workshop, harmful to the body of workers, causing environmental pollution, and in serious cases there will be a risk of explosion. By cleaning up, can create an excellent health environment, to ensure workers' health, happy mood, conducive to stable production and improve product quality.