Vibrations in engineering and technology

Kupchuk Igor – candidate of technical sciences (Ph.D in Engeneering), senior lecturer  of the «Department of General Technical Disciplines and Occupational Safety» of Vinnitsa National Agrarian University (Sonyachna St., 3, Vinnitsa, Ukraine, 21008, e-mail: kupchuk.igor@i.ua).

Feed make up a large part of the cost for livestock production and determine its quality. A very important technological operation with high energy costs is the grinding of feed grain (wheat, barley, peas, corn, etc.). Therefore, research on the development of effective technologies and cost-effective equipment for grinding is relevant and of practical value.
In the laboratory of the theory of mechanisms and machines of the department of general technical disciplines and labor protection of Vinnitsa National Agrarian University, a vibratory disk crusher was designed to increase the level of technical support for the livestock industry. The crusher uses a more efficient method of grinding feed grain - a combination of impact and cutting, in contrast to a hammer mill that grinds with a free impact of hammers.
The research results of grinding corn grain into feed by a vibratory disk crusher are presented in the article. An experimental prototype of the developed machine was used as an object of research. To register the input and output parameters of grinding, we used the material and technical base of the department of technological processes and equipment of processing and food industries. In order to comply with the zootechnical requirements for the degree of grinding of grain into feed, the dispersion of the obtained product was also controlled. The sizes of the fractions were determined by mechanical separation on a sieve analyzer. Data processing was carried out in the Microsoft Excel software package.
Thus, graphs were obtained and rational parameters of the vibratory disk crusher were determined. This was done by analyzing the performance for the crusher depending on the rotor angular velocity, the sieve perforation diameter and the grain moisture content.

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