Substantiation of parameters and principle of operation of a device for grinding peat mixture for sowing seeds in cassettes when growing seedlings with a closed root system

Abstract

Currently, a promising direction is the cultivation of planting material with a closed root system (ZKS). In many countries (Finland, Sweden, Norway, Canada), reforestation and afforestation is carried out mainly with seedlings with a closed root system. Greenhouse complexes have been created in the countries of Europe, America and Asia, in which all methods of growing ZKS are performed. There are nurseries in Russia that mainly use foreign equipment for sowing seeds. One of the ways to solve this problem in Russia is the development and implementation of an import-substituting set of equipment for growing seedlings with a closed root system in greenhouses. An important device of this complex is the equipment for grinding the pressed substrate. The article presents an analytical review of existing analogues of equipment (Russia, Sweden, China) for grinding a pressed substrate for sowing seeds in cassettes. Both advantages and disadvantages have been identified. In the course of research and development, 3D models of a device for grinding a substrate for sowing seeds for growing seedlings with a closed root system were developed, the number of cutters was substantiated, productivity was calculated, parameters were optimized taking into account the experience of foreign and domestic analogues.