THEORETICAL STUDIES OF THE EXPANDER WORKFLOW FOR THE PRODUCTION OF FARM ANIMAL FEED

Abstract

The article runs about the issues of improving the design and operating parameters of the machine for the production of expanded animal forage. Based on the analysis of the research and classification of design solutions, a promising model of a single-screw press was substantiated and the direction of improving its design was determined. The main four compaction zones of the forage mixture in the expander are presented. The modes of operation of the installation without a damping spring on the output head and with a spring were presented. Mathematical expressions of the capacity of the output head of the expander with and without a damping spring are also presented. The main adjustable design parameter of the expander is determined – the width of the annular channel depending on the maximum pressure in the third sealing zone. The productivity of the machine screw at the end of the third pressure zone is presented. The main condition of the material flow sustainability ensuring the stable operation of the expander was determined.
Key words: expansion, compression, auger, energy intensity, research, temperature, humidity.