Factors affecting the efficiency of the rod shredder and the analytical expression of its productivity

Abstract

Shredding is one of the most energy-consuming operations in the feed preparation process. Among the methods of shredder materials, precise cutting is a less energy-consuming process and provides a higher quality of the ready product. The efficiency of grain shredders is usually evaluated as a combination of qualitative and quantitative indicators. When improving the shredding process, it is necessary to ensure that the finished product meets the zoo technical requirements, and the shredder provides high productivity with minimal energy consumption. Quantitative indicators include the productivity of the shredder and specific energy consumption. In practice, it is necessary to separate the energy consumption of the shredding process and the energy consumption of the process, taking into account the degree of shredding. The design of a shredder capable of providing oblique cutting with greater efficiency is proposed. The shredder has a truncated rod that is located on a shaft inside a cylinder with longitudinal holes. In the longitudinal holes of the cylinder there are removable counter-cutting knives. The productivity of the given rod shredder generally depends on the mass of crushed particles passing through the hole per rotation of the rod; the frequency of rotation of the rod and the number of holes. As a result, an analytical formula is expressed that allows calculating the productivity of the rod shredder based on these parameters. The results obtained can be used in the design of shredding machines and will be used in the future when creating an experimental installation of a shredder.