The Development And Research For Viscous Material Conveyor Equipment

ABSTRACT:Compared with ordinary solid material, high-solid viscous and dense material has the characteristics of high solid content, high viscosity and poor mobility. A mainly problem is the difficulty of the viscous and dense material transportation in traditional conveying equipment. The problems of easily damaged, high cost and easily damaged can be also found in the transportation of viscous and dense material, which lag behind the needs of production development. In this paper, a set of specialized transport equipment for viscous and dense material has been developed. The research around the sticky material conveying equipment was developed mainly from the following aspects.First of all, the transportation performance of viscous and dense material in the pipe was determined through analysis of the mainly physical characteristics of particle character, density and viscosity of viscous and dense material. The relationship between apparent viscosity of aluminum chloride and shear stress, and the relationship between shear rate and material density were obtained by experimental analysis of using rotary rheometer for the rheological properties of viscous material aluminum chloride. Based on the above works, the calculation of transport resistance of aluminum chloride in the pipe was completed.According to the function requirement of aluminum chloride material cutting in pilot test plant and the reference of rheological properties and transport resistance of aluminum chloride in the pipe, the whole project of the viscous and dense material conveying system was designed and arrangement type of conveying equipment was also determined. Based on the whole project, the design requirements for transmission mechanism were settled in this paper. Several types of mechanism were proposed, and the planar six-bar linkage mechanism was determined as transmission mechanism through comparative analysis of these mechanisms.Firstly, the planar six-bar mechanism was applied to transmission mechanism to meet the design requirement. A six-bar mechanism can be considered as composition of a four-bar mechanism and a binary-group, for which the design of six-bar mechanism can be decomposed into the sub problems of optimization of the path of four-bar linkage point and position dimension of binary-group. To ensure approximate linear or two approximate arc were contained in the path curve, curve adaptive method was used to optimize the linkage point of basic four-bar mechanism. Meanwhile, combined with the transmission function, this work set the movement function of output component and minimum error of the given transmission function in intermittent position as the optimization goal to optimize the location and size of binary-group. The calculation was solved by using Genetic Algorithms in Matlab, planar six-bar slider mechanism and planar eight-bar mechanism were obtained as optimal solution.After the kinematics and dynamics analysis of the obtained mechanisms, the two mechanisms were imported into ADAMS to accomplish their modeling and simulation. The displacement, velocity, acceleration curve and the situation of reaction of supports of each component were obtained in this work. According to analysis of simulation results, the planar eight-bar Dual-dwell mechanism was finally determined as transmission mechanism of the viscous and dense material conveying system.In the end of this paper, the structural design for key components of the viscous and dense material conveying equipment was completed. The mainly structure parameters, including number of cylinders, number of punching, stroke and the diameter of piston has been determined. In addition, the design of crankshaft, plunger, linkage, crosshead, the seal of plunger and the seal of cylinder block and the type selection of motor were also completed. On the basis of the above designs, three-dimensional prototype modeling of whole machine was obtained in SolidWorks.