The energy saving waste-free technology of receiving vegetable protein from sugar beet pulp is developed. The analysis of functioning of the machines and equipment of the offered technology is made. The constructive scheme of the experimental batcher mixer is submitted. Theoretical bases of work of a batcher mixer are explained and regularities of the process of interfusing of liquids which allow to make the analysis of its working process are theoretically investigated. On the basis of the theoretical analysis of the working process of interfusing of juice of pressed sugar beet pulp and solution of organic acids in a batcher mixer the mathematical description of the process in the form of the equations of a trajectory of driving of a stream of solution of organic acids at expiration from a nozzle of a mixing element is received. In the research of the working process of a batcher mixer analytical expression for determination of the value of the jet force arising at the expiration of solution of organic acids from a nozzle of a mixing element and dependence of efficiency of knot taking into account its design data of a batcher mixer are received. In the research of a required power dependences of values of the traveling speeds and resisting strengths arising in the course of rotation of a mixing element are installed on the drive of the mixer. On the basis of the conducted researches the effectiveness of development and introduction of the technology of a batcher mixer is confirmed.

No abstract

No abstract

No abstract

Operational research observations of roll shredders for agricultural processing materials of varying hardness show that failure of their functioning is mainly due to wear of working surfaces of rolls. In this connection, studies of wear resistance and evaluation of the limit state of the working surfaces of the rollers allow to ensure a real level of their durability. The purpose of the work is to develop a method of calculating specific wear of working elements of roller shredders depending on physical and mechanical properties of the roller material, mill material and the structural and technological parameters of the unit. Research task of the wear test was to determine the integral wear characteristics depending on the combined effect of factors on the wear process. The method of the research includes study of particle kinematics of mill material in the gap between rolls of shredder, estimation of linear wear on working surfaces of rollers caused by abrasive particles and the number of particles acting on unit site of the surface of shredder rolls. The specific value determined by the ratio of wear to productivity of the shredder is used as the criterion of limit state of rolls by durability. The main factors of influence on specific wear are abrasive action of the mill material, mechanical properties of the roll material and kinematic characteristics and geometric parameters of the rolls. Relative difference in comparison of the calculated and experimental data of specific wear does not exceed 10 %, which indicates high accuracy of reflection by equation of real process. Consequently, the results of the research allow to control the wear process and to justify structural, technological and operational solutions to increase operational reliability of working elements of the roller shredder.