The Structural Optimization And Modal Analysis Of Linear Shaker

Shaker is a commonly used material handling and screening equipment, screen machine capable of materials for dehydration, mud, off referral, grading, sorting by particle size or quality, etc. Therefore, screening machinery in the coal, water, mining, manufacture salt, food processing, chemical and other industries has been widely used. Currently, more than half of the shaker is the presence of low intensity, noise, and low life issues. Therefore, structural optimization shaker designed to improve screening efficiency, reduce power consumption and extend the life is very meaningful.In this paper, these problems of full density polyethylene shaker in screening process are analyzed. And establishes a mathematical model of structural optimization linear vibrating screen. In order to improve screening efficiency, this paper presents the optimization objective function based on factors and a vibrating screen vibrating screen transformation program and designed a simple device and analyzed using the set Ansys modal natural frequencies and mode shapes. The results showed that the experimental device can effectively avoid the resonance region, has a certain reference value.In this paper, the work done following aspects:to be serious congestion problems for linear low density polyethylene powder in a petrochemical company in screening job shaker screen presence, this paper analys from the material properties, structural characteristics and process characteristics and pointed out that the best range of shaker design parameters of these effects Meanwhile, based on the requirements of polyethylene powder shaker of actual application, this topic establishes optimization design model of power per unit target and develop a linear shaker rehabilitation programs. According to the development plan, design a simple, small-scale experimental screening device. The design is mainly for fixtures screen optimized design:side discharge end of the fixed plate limit increases, limiting its displacement in the vertical direction vibration sieve process, while relying on collision with the screen play increased vibration role in making bulk materials jump too high, too low, small particles of material jump, an effective stratification, and role play to prevent clogging adhesion; open at the rear end of the body of a transverse slot, will screen in the spring and bolt, conducted in this exciting at the same time reduce the vibration shaker on the outside. reduce the noise caused by the shaker.Rational analysis device structure by Pro/E modeling. Using the finite element method structural analysis software Ansys gridiron before and after the transformation of vibration design modal analysis, inherent characteristics and mode shapes determined by analyzing the design of the shaker device. Solving the first30natural frequencies and mode shapes of the structure before and after reconstruction. Data show that the device can effectively avoid the resonance region. Before and after the transformation of the screen is much better than the transformation of the mode shape and feed end and the discharge end have reached the ideal vibration effects.It makes simulation and animation demo to screening process of the linear shaker structural optimization before and after by using3DMAX software. Intuitive results showed:the transformation of the former structure, large diameter mesh material in the vicinity of the discharge end of the accumulation, easy to plug the sieve; After structural improvements, large diameter smooth discharge of materials, screening efficiency has been improved.