Finite Element Analysis of the Pressing Screw in Screw Press
Screw pressing technology provides a pressing process superior to those traditional ones. Screw press has been used in oil extraction with a long history, both for cold and hot pressing of vegetable oil materials. Pressing screw is the core component of screw press, as a very important working part, its strength is a precondition for ensuring normal operation of the whole machine. Considering the complexity and drawbacks of conventional analysis and check methods for pressing screw, a simplified three-dimensional model of which was set up, then finite element analysis was done, thus obtaining its continuous deformation and stress distribution with the results close to those from theoretical calculation. Hence, this method can be applied to rapidly and correctly find those dangerous positions and existing imperfections of its structure, thus providing valuable data to judge its structural rationality before practical manufacture, so as to make further improvements and optimizations for its structural design.