Movement And Mechanical Characteristics Analysis Of Die And Roll Of Biomass Pellet Fuel Plane-die Briquetting Machine

Utilization rate of biomass energy is lower than that of petroleum, coal and natural gas.As the fourth great energy resources, biomass energy can promote the improvement of energy structure and the environmental quality to realize the sustainable development, and has very important significance in raising the economic development level of rural. How to convert and utilize biomass energy effectively has become an important subject in the field of energy and ecological environment. Biomass pellet fuel plane-die briquetting machine is an important equipment in biomass briquetting technology. This device has the advantages of simple structure, small volume, light weight, strong mobility and wide adaptability of raw material.It is talent showing itself in the biomass solidification equipment, and has good application and popularization, and becomes a hot spot in research and development currently.In this paper, based on the research of the current structure characteristics and results in flat die pellet fuel forming device, The main problems that exist at present in flat molding machine is summarized, such as high energy consumption, short service life of key parts, high machine failure rate, unstable performance, poor operating environment. Therefore the research for movement and mechanical characteristics analysis of die and roller of biomass pellet fuel plane-die briquetting machine will provide the essential theory basis for optimizing and improving production performance, at the same time has great realistic significance to reduce the prices of biomass briquette fuel and to promote the use of fuel.Based on type ZL—300plane-die granulating machine of Huaguang ecological research institute, this article mainly talk about the theoretical exploration and analysis in the die and roller movement mechanism and mechanical characteristics of flat die pellet fuel forming machine. In the motion analysis of die and roller die, it explains why the pressure roller working for a long time will became a drum-shaped. Because there exists dislocation abrasion phenomenon caused by the speed difference in the reciprocal movement of die and roller. It mainly contains the stress of material in the deformation zone and the forming zone, and the pressure of roller and plane-die in the mechanical analysis. The stress analysis of material in the deformation zone explains the relationship between the best angle and the best thickness of material with productivity. The stress analysis of material in the forming zone explains the change of chamfer will change the stress in the die hole. By the stress analysis of roller, it carries on an investigation in the extrusion pressure of roller and power consumption of extrusion forming. Deduces the theoretical calculation formula of the optimal thickness of the material layer and the stress in the die-hole, extrusion pressure of the roller, productivity, spindle power, which can provide reference for designing the plane-die briquetting equipment. The causes and harm of the plastic deformation in the die orifice was explained by the analysis of stress in plane-die. The plastic deformation of the die orifice is the result of frictional forces caused by material for flat die, not only reduce the flat die service life, but also reduce the quality and productivity of particle fuel.And on the basis of this. the main technical parameters of the plane-die pellet fuel briquetting machine were analyzed and optimized.Combined the analysis of the main technical parameters of the plane-die pellet fuel briquetting machine with the performance and major technical parameters of ZL—300, the model of the structure parameters was insured. Through the software Pro/E on the reasonable model simulation of core components, parametric modeling was realized. Importing the model into the software ANSYS, the grid division was down, and characteristic simulating analysis in finite element of structural statics for key part was realized. Investigated the impact of different placket taper, materials to the stress and strain in the die hole and the whole plane-die. The hypothesis dislocation abrasion of the plane-die is caused by the uneven distribution of the material on the plane-die which is caused by the differential motion between them and the spindle torque. The analysis of stress and strain distribution and dislocation abrasion will provide the essential theory basis for optimization design of the Structural parameters of the plane-die pellet fuel briquetting machine, finally to prolong the service life of the key components.