Theory Calculation And Analysis Of Horizontal Screw Decanter Centrifuge

In a decanter centrifuge ,the screw conveyor is the key component, continuously delivering sediment out of the machine ,whose structure ,modeling and parameters determine the throughout ,separation efficiency and working life of the centrifuge. So it is significant to analyze the strength, distortion and vibration of the screw conveyor. The motor can provide kinetic energy, accurately confirm rated power. A suited motor can effectively economize energy sources and improve its efficiency. Bearing is a component which can be easily damaged, whose design and calculation badly influence the work capability and life of the machine. By using an example, this article accounts for the fact that preferably settling the bearing's design and calculation can increase the working life of the centrifuge.The leading content of this article includes several aspects. As will be stated next.(l)In the thesis ,a parameterized 3-D finite element model of the screw conveyor is established, with the model, static analyses is carried out and the influence of the structural parameters on the stress intensity and deformation of the conveyor is analyzed, so rationality of the design is validated.(2)The natural frequencies and corresponding critical speed of the screw conveyor are obtained by performing modal analysis, which can be used as a reference when we design the speed of revolutions.(3)This article provides the theoretic expression of material transportation and choice of the motor. Combining the results of tests, this article gains the expressions when we choose motors in projects.(4)By analyzing the problem of damage to bearing, this article provides the methods of choosing the type of bearings and calculation methods.