Improved Design And Numerical Analysis Of Block-wheel Cylinder In Gyral Kiln

Gyral kiln is a long tube-shape large-scale equipment,which is widely used in non-ferrous metallurgy,cement,chemical industry and so on.There are two kinds of patterns in its block-wheel device:mechanical block-wheel and hydraulic block-wheel.As a kind of quite advanced block-wheel device,the hydraulic block-wheel device saves time and manpower,and is the main type of block-wheel device in gyral kilns.The block-wheel cylinder is a key component of hydraulic block-wheel device,which is with low speed,high radiation temperature,serious pollution, bad working conditions and bears radial force on piston rod.At present,the problems of hydraulic cylinder is about serious internal leakage,seal failure, crawling and the short service life.For replacing the block-wheel cylinder frequently and inconveniently,it wastes of the manpower and material resource massively,and influences seriously the role of block-wheel device and gyral kiln.Therefore,to develop the block-wheel cylinder with reasonable structure and long service life is the important topic in the transforms of equipments in gyral kiln.Against a series of questions of blocking-wheel cylinder at present,the paper proposes improvement measures.Adopting auxiliary bearing components and changing the action point which push rod exert at piston rod located between the piston and guide sleeve can reduce the radial strength of the piston and support ring received at.With the use of Sitefeng seals,the cylinder does not release nearly. Putting on support ring in the piston and guide sleeve,increasing the air exhaust device,may reduce mechanical friction and the attrition between the piston and in the cylinder tube,as well as between the piston rod and guide sleeve,and causes the hydraulic cylinder moving stable,non-crawling and reliable.The improved blocking-wheel cylinder run steadily and may enhance its service life for ten timesThe paper sets up a finite element model of blocking-wheel cylinder in Pro/MECHANICA.The deformation and stress distribution of the cylinder under radial force are obtained by static structure analysis.Through the strength analysis of the main body,it verifies that blocking-wheel cylinder can bear impact loads by the gyral kilns.In addition,we pay attention closely to the most recent development in the seal technology,the correct choice,the installment and the use of seal,which have the great significance to prevent cylinder's divulging and the pollution causes from the former and enhance the operating performance and reliability of hydraulic cylinder.Finally,this paper makes the theoretical analysis to fluid lubrication BEM in the block-wheel cylinder,and proposed several important factors which influence the lubricity.After the transformation,the block-wheel cylinder can be suitable for the situation with the temperature 90℃,serious pollution,bad working conditions. This affects positively to reduce maintenance amount,save the maintenance cost, raise the benefit of enterprises.This new hydraulic cylinder may also provide reference for other single-acting cylinders with low speed.