Mathematical Model of Pressure Formation Process Along the Helix Channel Length of Screw Grinder

The improvement of the technical equipment effectiveness is currently becoming particularly important. This applies not only to large and high-energy-intensive machines, but also to household appliances, the total energy consumption of which often exceeds the energy consumption of the overall equipment. These types of devices include, in particular, grinding and cutting equipment. The mathematical description of the processes carried out on this equipment is generalized and can be extended to a wider class of machines, including waste processing and mining equipment. The technological parameters, the design of screw grinders, and the processes of movement, deformation, extrusion and cutting carried out in them are characterized by a significant number of factors affecting the energy intensity. The main ones are the geometric parameters of the screw, machine's body, cross knife, grinding plate's thickness, the number and diameter of holes in it, as well as the product's physical-mechanical characteristics and operating conditions. The most important for the mathematical description are the zones and processes where the main share of the consumed power is spent. The complexity of their analytical description is due to a simplified consideration of either individual technological zones of grinders' existing designs, or the use of unreasonable simplifications

Formation of the Correct Mathematical Model of Grinding Raw Meat in Meat Mincer

Improvements of technological processes and equipment at modern meat-processing enterprises are challenging. It is especially important for the basic and widely used process of grinding raw meat material. Framework enhancements in meat grinding equipment allow one to significantly decrease power consumption and improve the quality of meat products and productivity of raw material processing. The grinding equipment for raw meat and meat products makes about a half of all the equipment used in meat industry. The generalized mathematical model presented is used to optimize the meat grinding process. Design and technology optimizationof mincers proves to be the most efficient only using correct mathematical models of extrusion processes. The influence of design and technological options on performance of mincers using EI is prioritized. The priority for further research is estimated. Both mathematical models of individual processes and results of computer simulations of mincers performance are presented. Mathematical equations, variables and algorithms are calculated using the ”Delphi” program. The results of numerical calculations are illustrated by the corresponding graphical dependencies