Among a number of methods for intensifying the process of grinding grain material in the technology of compound feed preparation, one of the most promising can be considered the use of a vibration field, which contributes to the formation of optimal conditions for the timely withdrawal of the finished product from the grinding zone and ensures self-cleaning of the separation surfaces from the remnants of the crushed product (especially when using non-food classes grain), thereby ensuring the maximum throughput of the machine. Given that for grinding in feed production mainly use impact machines, which are adapted to the destruction of solid and at the same time fragile objects, as well as the economic feasibility of processing substandard feed grain, which has completely opposite physical and mechanical characteristics. scheme of vibrating-rotary disk crusher. The essence of the development is to provide a combined force on the material, namely, due to the rotational and vibratory motion of the impact elements of the crusher, a combination of impact destruction and cutting material, which will process both hard and wet material without significantly reducing equipment throughput. In addition, the oscillating mode of the working chamber and, as a consequence, the separation surface will facilitate the timely removal of the finished product from the grinding zone. The next stage of creating a vibrating-rotary crusher, which precedes the design and constructive implementation is to perform theoretical calculations of its parameters, including using the methods of mathematical modeling. Thus, in order to achieve high efficiency of the process of grinding feed by the designed machine, theoretical studies of the relationship between the values of kinematic parameters of the executive bodies and electricity consumption to drive them, the main results of which are presented in the article.
Full-fledged animal feeding is the basis for the successful functioning and effective development of the livestock production industry and can be ensured only if a sufficient amount of feed is produced, the loss of their nutritional value during their harvesting, storage, and also the correct preparation of feed for feeding is reduced. Grain feeds used at concentrated feed. They contain a large amount of nutrients that are easily absorbed. Their use in the feeding system allows you to balance the rations of animals in terms of energy, protein, amino acids. The compilation and selection of components of feed rations is carried out by technologists depending on the species, age group, morphological and biological indicators of animals and many other factors. At the same time, regardless of the technology and feeding scheme chosen by the specialist, concentrated feed based on wheat, barley, corn and other agricultural crops that have undergone preliminary technological processing remains an indispensable source of nutrients for animals. Moreover, a particularly important indicator that affects the productivity of animals is the quality of grinding concentrated feed. As a result of grinding feed, a significant number of parts are created from a larger surface area, which helps to speed up digestion and increase the absorption of nutrients. Grinding is one of the most energy-intensive operations used in the production of animal feed. Therefore, scientific research is aimed at minimizing the consumption of energy resources by crushers and increasing the grinding process is an urgent task. The article presents the results of experimental studies of the preparation of grain for feeding farm animals using a vibrating disc crusher, which was designed on the basis of the Department of Department of General Technical Disciplines and Labor Protection of the Vinnytsia National Agrarian University and passed preliminary experimental tests, which proved the prospects of its use in the processes of grinding grain raw materials. The choice of the range of design parameters was performed on the basis of assessing the compliance of the degree of grinding of the finished product with zootechnical requirements for the target fraction of the finished product.
Dehydration of damp dispersive materials is a wide spread group of processes in food and processing industry. In particular to this group belong processes of separation of damp dispersive waste of food enterprises (alcoholic bard, beer pellets, beet press, coffee and barley slime) at solid and liquid phases. At majority of Ukrainian food enterprises this waste is poured out on the ground or in nearby ponds, but in case of its separation the solid phase of such materials can be used as valuable additive to agricultural fodders or as fuel. As a result, one can provide a complex solution of problems: waste utilization, prevention of nature pollution and receipt of an additional income from realization of fodders or fuel. There are a lot of methods of dehydration of damp dispersive materials that can be divided at several groups: mechanical, thermal, electro-physical, biological, chemical and combined. An improved classification of main methods of dehydration of damp dispersive materials and equipment for their realization is presented in the article. This classification allows to conduct a more systemized and founded analysis of advantages and disadvantages of the methods, to select an optimal method with consideration of conditions and parameters of a concrete enterprise and processed material. Such analysis and selection can be realized with help of a computer program. There is substantiated high efficiency of mechanical dehydration methods of damp dispersive materials, in particular, the method of pressing on equipment with hydraulic or unbalanced drive. There are proposed a block-scheme of an algorithm of automated analysis of methods and equipment for dehydration of damp dispersive materials for selection of admissible and most effective variants of their processing by such main criterions: as productivity, expenses of energy, specific consumption of materials of equipment and final humidity of processed material.
The question of increasing the quality indicators of walnut in the process of storage and processing, due to the use of modern and progressive methods and means for its drying, is considered. It is noted that Ukraine has a significant potential in the cultivation of walnuts, but due to the lack of modern and highly efficient means for its processing, it is forced to sell them at low prices as raw materials to secondary markets. The increased moisture content of walnuts during harvesting at the level of 35-45% and the lack of modern highly efficient and energy-saving equipment in Ukraine leads to the storage of this product in natural conditions in specially covered and well-ventilated rooms. This process of drying the fruits is very long, since excess moisture constantly acts on the walnuts, creating conditions for the active development of microorganisms. When it rains, this method of drying often leads to complete spoilage of the fruits. Therefore, for highly efficient business related to walnuts, special drying equipment is simply indispensable. This equipment will help to significantly speed up the process, make it more efficient and economically profitable, and will allow to bring the moisture content of the walnut to the International Standard (no more than 10%) and technical requirements. It has been established that modern methods and means for drying prevent the appearance of mold, ensure high quality of valuable nut kernels and guarantee a long shelf life. Fresh nuts are dried to a residual moisture content of 6-12% in a stream of dry warm air at a temperature of 20 to 36 °C. The drying temperature of a walnut depends on its size and humidity. The drying process can be carried out both in professional drying cabinets and with the help of special heating devices for drying nuts. Modern efficient drying equipment from the time-tested brands Feucht-Obsttechnik, Amb Rousset and other companies were considered. The new highly efficient and resource-saving equipment is presented in the form of sectional structures, which works on an economical gas heat generator. In this equipment, whole nuts are dried for 1-3 days, as a result of which the humidity reaches 12-13 %. The productivity of such equipment, depending on the number of sections, is 1-4 tons of products per day. It is also stated that among the variety of existing technologies and means of drying raw materials, the most promising ways to intensify the process while ensuring high quality of the finished product and increasing production efficiency are devices that combine different modes and methods of drying.
Despite some decisions approved by the Government of Ukraine to address the problems of efficient and environmentally sound solid waste management, in particular those that accumulate as a result of economic activity of the agro-industrial complex of the state, their practical implementation of measures declared by the Government is currently low. levels. Among a number of deterrents, the main ones include: lack of centralized recycling facilities and economically accessible for small facilities technical and technological base of waste processing, ineffective environmental control and the necessary management practices. However, vegetable waste is not always used, although it is a valuable raw material that can be used as a raw material for the production of fuel pellets, which will significantly reduce the energy dependence of the enterprise. An integral part of the technological cycle of processing plant residues into fuel briquettes is the preparation of biomass for briquetting in order to ensure the required particle size. Given the strategic importance of the formation of material and technical base to ensure highly efficient processing of agricultural waste of plant origin, as well as high energy consumption, which marks the traditional preparation of biomass for briquetting, there is a need for research to solve the problem of energy efficient grinding of structurally heterogeneous materials. high moisture content, which determines the relevance of the article. Thus, in order to achieve high efficiency of the process of grinding waste of plant origin, promising ways to reduce the energy consumption of this process based on the energy balance of the vibratory crusher rotor type and analysis of relationships between elements of the structural block diagram of the energy balance of the technological system "Vibration-rotor crusher - the processed environment ".
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