In the press process, the old oil press prices, pie throwing radially different levels of oil content, oil content in the surface layer of the story than the outer surface of the press, at the same time, pressing the material between the radial level of residual oil rate With virgin material difference to the cake mouth of the passage is reduced. From the plane of the actual cake residual oil rate radial level just inversely related to Nanyang Which is good old-fashioned press that cake residual oil is higher than the outer lining of residual oil. This phenomenon can be considered due to the screw press due to the structural characteristics: on the one hand pressed cake blank check within bore drain is bound to the surface along the helical axis virgin material passage is long and difficult to discharge; another in terms of the material layer is thicker feed section and the front part of the press section, prone to oil ratio gradient in the late squeezing, pressing thin material is compressed, while the strength of the screw shaft near water evaporation at the surface of the inner wall of the cage than virgin high so that the oil squeezed out of material particles within the pores, so the oil content gradient between the inner and outer layers of the cake is relatively narrow; when the outer cake from the plane due to the pressure of the disappearance of the old press, rapid evaporation of water and an outer layer cakes, fat suction, etc. but the inner layer cake oil content is less than the outer layer. The new press Compared with the first listing of the old press, has a small footprint, mobile operations, carrying oil filter function, energy saving and other advantages, with these advantages, the new press has replaced old-fashioned oil extraction machine on the market most users welcomed the press oil production equipment. Heating coil, pressing bolts, cage bars, extrusion head, a cake circle are five core components of the new press, these five core components of the new press is very important. The role of the new press five core components and manufacturing processes. Nanyang old press _ _ Goodwin press machine provided by Nanyang City, Qi Feng Machinery Co., Ltd. Nanyang City, Qi Feng Machinery Co., Ltd. (www.qifengjixie.com) (www.nyqfjx.com) strong, credible, Nanyang in Henan edible oil processing machinery industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Goodwin machinery into the brilliant and you work for a better future!