Sukach O. Elaboration and grounding of parameters of a cone-shaped huller for milk thistle seeds

The thesis is dedicated to the theoretical and experimental research of the dehulling process of milk thistle seeds bran covering. In the research paper it is suggested the scheme of a crop complex processing, it is carried out an analysis of technologies and facilities for preparation of seeds for oil expression and as a result it is formed the requirements for the huller. It is developed the theoretical models of interaction between the milk thistle ellipsoidal seeds and riffled dehulling working surfaces that represent the dependence of seeds rotation angle and slope of seeds which are tangent in a contact point with a riffle upon riffle spacing. It is established the dependence of tangential force of shift upon tangential deformation of milk thistle seeds. It is developed the dynamic models of interaction between cone-shaped dehulling tool and seeds as well as it is determined the productivity of the huller. It is analysed mechanical and technological peculiarities as well as a process of milk thistle seeds dehulling with a use of specially developed device. It is proved rational operating conditions of a doser, established productivity, consumed power and engineering capacity of the huller.