Research On The Design And Mechanical Properties Of Biomass Circular Mould Briquetting Machine

Biomass circular mould briquetting machine is widely used in the fields of biomass curing molding,chemical machinery,feed production,energy and the others,however,there are several problems such as low production capacity,high energy consumption,serious equipment wear and short service life and the others.In this paper,theoretical research,key component design and finite element analysis of biomass circular mould briquetting machine from the aspect of capacity and abrasion are carried out to improve the production capacity,reduce the energy consumption,reduce wear and prolong service life.Based on the analysis of the forming principle,micromechanics and key components in the forming process,the basic forming conditions are derived,and the mechanical model of the material extrusion process is established.It is found that the material grab Angle is related to the friction coefficient of the material,the ring mould and the press roller.When the grab Angle meets certain conditions,the molding can be realized.The relations among the structure shape,length-diameter ratio,thickness and diameter of the ring die,the opening taper,arrangement and opening rate of the ring die hole,the number of rollers,the structure and diameter of the press and the productivity were analyzed,and the structural parameters of the machine were analyzed and calculated.The mathematical model of capacity and energy consumption of the ring molding machine is studied.According to this model,the influence of parameters on the performance of the ring die with taper holes is analyzed.The results show that the production capacity increases with the increase of ring die width,linear speed and opening rate;the energy consumption is related to the material characteristics and equipment process parameters.On the premise of ensuring the smooth extrusion and stable molding of materials,the energy consumption of the equipment can be reduced by improving the material and processing technology of the roller and selecting the die hole structure with large taper angle and short and thick.ABAQUS software was used to simulate and analyze the extrusion process,and it was found that the stress of the material and the die hole was the largest at the interface between the cone section and the straight section,and the material was prone to crack,resulting in severe wear and failure of the die hole.In view of the above problems,the existing structure is improved and the ring mold is modularized.It is found that modularization of the ring mold is not only helpful to make the ring mold bear force evenly,reduce wear and prolong the service cycle.