Structural-mechanical properties of pulp of oil cultures’ seeds
The theory of consolidation process of pulp of oil cultures’ seeds in the auger press is developed. The calculation model of the pulp is presented as a two-phase system. The "skeleton" is gel hydrophilic phase, i.e. coarse gel powder, complex in chemical composition, possessing hydrophilic properties. Liquid hydrophilic phase is oil with substances dissolved in it, which are located on the widely developed internal and external surface of particles. Accepted in this paper design model of two-phase pulp is based on the following conditions A, B, C. A. Rheological equations of condition of each phase of the pulp. B. The nature of interaction of individual phases of the pulp. C. Change in the ratio of pulp’s phases in the unit of volume in the consolidation process. Deformation in time of the two-phase pulp includes two simultaneous processes. The first process is volumetric change in time of the gel phase, occurring as a result of deformation of viscous connections between particles of the gel phase. The second concurrent process is the process of pulp’s phases moving relative to each other. For studying the mechanism of the consolidation process of two-phase pulp, the rheological models of ideal bodies are recommended, as well as the technique of drawing up complex rheological models. Complex models are made up of two and more ideal bodies, connected consistently or in parallel. Dough is chosen as a model prototype of the pulp. The considered model consists of four elements: two elements of Maxwell’s body and two elements of Calvin’s body.