The screw press is a machine in which the blank is continuously advanced in the press chamber and the crude oil is squeezed under dynamic squeezing. In addition to the hopper, the press chamber is the main part of the operation, by a squeeze screw and cylinder squeeze cage composition. Screw Oil Press There are two types of single-stage press and two-stage press, single-stage only one recumbent press chamber, two-stage plus a straight press for the first-level press. The squeeze shaft consists of a number of crimps and loops on the shaft. Each screw has a certain pitch and screw depth, and a shaft on the pitch of the screw from the feed to the discharge port gradually shortened, the screw depth gradually shallow, so that the volume of the press from the import to the export gradually To reduce the billet into the press after the squeeze screw thread to the exit at the exit, the pressure gradually increased, Screw Oil Press so the oil will be squeezed out. Cylindrical squeegee squeeze and squeeze the pad to install the gasket to form the oil gap, the extruded oil that flows through this gap. The large squeegee press is also equipped with scraper, scraper deep in the press chamber, aimed at each circle, to prevent the blank in the press chamber sliding, Screw Oil Press and to prevent the billet, and to adjust the cake thickness, Thus correspondingly control the pressure of the press chamber, reducing the residual oil rate. In addition, the machine also has a smooth surface of the cake cake, etc., and often accompanied by steamed wok, can make the oil steaming and pressing continuous.
The main part of the screw press is the squeeze chamber, the press is the same with the squeeze cage and in the squeeze cage rotation of the screw shaft composition. Its work process is the use of screw shaft screw lead to narrow or root circle diameter gradually increased, frying a good material embryo into the press after the press, the screw thread in the rotation under the action, so that the size of the press chamber is shrinking And squeeze the role of squeeze; squeeze out the oil from the squeeze out of the cracks in the squeeze out, while the residue crushed into a chip cake, from the end of the squeeze axis continue to discharge. Squeeze oil in general can be divided into three stages that feed (preload) section, the main squeeze (out of oil) section, Screw Oil Press into a cake (heavy pressure oil) section. Gradually feed the end towards the bottom of the cake. As the diameter of the screw thread from small to large changes, so that the volume of each chamber gradually reduced; and because of the thread thread continuously push the material embryo into the press chamber, so before the push after pushing the product pressure, Embryo, squeeze the oil out. At the same time adjust the cake gap to change the thickness of the cake, the smaller the gap, the thinner the cake, press the pressure inside the chamber. In addition, the material embryo in the press chamber was motion state, resulting in material embryo and strip, garden row, material embryo and squeeze snail, Screw Oil Press between the embryo and material embryo friction, and produce a lot of heat, so that the embryo in the press Temperature rise, so that there is a good embryo oil outflow, improve the oil rate.
The principle of screw press
When the oil press is running, the treated oil is fed from the hopper into the press. By the squeeze spir to the material embryo continue to push forward, for pressing. As the material embryo in the press of the press chamber is carried out in the state of motion, in the press chamber under the conditions of high pressure, material embryo and squeeze screw, material embryo and squeeze between the chamber produced a lot of friction resistance, so Can make the embryo between the micro-material friction, resulting in relative movement. Screw Oil Press On the other hand, because the diameter of the root garden of the screw is gradually thickened, the pitch is gradually reduced, so that when the squeeze screw rotation, the thread can push forward the material embryo forward, but also outward flip, and close to the screw thread The surface of the material also with the rotation of the shaft. So that each embryo in the chamber is not the same speed, the same direction of movement, but also between the particles there is relative movement. The heat generated by friction also satisfies the heat necessary for the operation of the oil extraction process, which helps to promote the thermal denaturation of the protein in the embryo, destroy the colloid, increase the plasticity, and reduce the viscosity of the oil. Improve the oil press oil rate, so that the material in the oil squeeze out, and from the park gap and the gap out of the gap.