Drag Chain Extractor For Edible Oil Extraction Plant

Brief introduction:
Drag chain extractor is also known as drag chain scraper type extractor. It is quite similar with the belt type extractor in structure and form, thus it can also be seen as the derivative of the loop type extractor. It adopts the box structure that removes the bending section and unifies the separated loop type structure. The leaching principle is similar as the ring extractor. Though the bending section is removed, materials could be stirred completely by the turnover device when falling into the lower layer from the upper layer, so as to guarantee the good permeability. In practice, the residual oil can reach 0.6% ~ 0.8%. Due to the absence of the bending section, the overall height of drad chain extractor is quite lower than the loop type extractor.

The basic principle of operation:
When oil plants are fed into the oil extractor after being rolled into flakes or expanded and forms a certain height of material layer, then the solvent (6# light gasoline) would be sprayed massively by the spray pipe to a certain level on the surface of material layer. Meanwhile, the scraper chain driven by the driving device will push materials forward slowly and evenly. Through repeated spraying and soaking by solvent (mixed oil), oil in the oil plants could be slowly dissolved and precipitated in the solvent (commonly known as the mixed oil). Mixed oil would flow into the oil collection bucket through the filtering of gate plate, and then the mixed oil of high concentration would be sent into the temporary storage tank by the oil pump and transported to the evaporating and stripping section. The mixed oil of lower concentration is used in the circulating spray. With nearly 1 hour of extraction, the oil in oil plants is completely extracted. Cakes produced after extraction would be pushed into the meal mouth of extractor by the chain scraper and sent into desolventizer toaster for solvent recovery by the wet meal scraper. Scope of application: drag chain extractor can be used to extracting various raw materials, such as soybean germ, rice bran, etc. It can also be used for pre pressing cake leaching of oil plants like cottonseed, rapeseed, sesame seeds, tea seeds and tung seed.

Features:
1.Drag chain extractor can be used for leaching various oil plants with uniform box structure that unifies the separated upper and lower layer of loop type structure with good permeability, the residual oil rate can reach 0.6-0.8%.
2.The oil extraction process of our company includes rotocel extraction, loop type extraction and drag chain extraction with reliable design, installation and operation, full energy saving measures and low consumption index of water, electricity, steam and solvents. The technology we adopts has reached the international advanced level and in the leading position of professional equipment in our country. At present, the turn key project of more than 1000 tons constructed by our company has been put into use by more than a dozen of enterprises.