Determination and Optimization of Feeding Device Parametres in the Plant for Preparing Liquid Feed Mixtures

Abstract

Feeding young animals is a very important stage during their growing-up period, but in order to provide them with essential nutrients, they are fed with liquid feeds, whole milk substitute in particular (WMS). The technique for reconstituting WMS consists of dissolving it in water followed by mixing, but it is significant to follow the cooking recipe strictly, so it is necessary to develop a system with a feeding (dosing) device that will make it possible to solve this problem. Theoretical and experimental studies of the feeding device have been conducted in order to optimize the technological process of mixing liquid feed. Theoretically, the quality of determining the mixture during dosing was established for the purpose of further research. The influence of the design and technological parameters of the feeding device was experimentally studied, and its efficiency was evaluated. It was found that as the inclination angle α increases from 67,50 to 700, the rotation speed n being from 850 to 1500 min−1, the maximum probability of staying in the tolerance field ΔP=96% is reached, and feed discharge Q ranges from 540 to 660 kg h−1. The research makes it possible to develop a feeding device at the design stage, meeting the requirements of the recipe, having high discharge rates and the lowest energy consumption.

Theoretical substantiation of the design and dimensions of the impeller of the plant for the preparation of liquid feed mixtures

“…It is based on two main properties of a liquid medium: continuity and continuous change of flow parameters in the volume under consideration. Therefore, for the calculation, we use a methodology for determining the size of the impeller and the inlet diameter, in relation to the installation for the preparation of liquid feed mixtures [4,5].…”

Selection and justification of the optimal multifunctional design of the unit for the preparation and distribution of liquid feed mixtures in animal husbandry

“…At the same time, it should be borne in mind that some of the premises have different capacities for livestock [6,7,8].…”

Investigation of the continuous mode of mixing when changing the rotation frequency of the impeller of the mixing plant

“…A study of installations based on vane pumps [1,2,3,4,5,6,7,8], it was found that the rotational speed n from 1750 to 3000 min -1 is not always effective, although even with these values high performance indicators. Therefore, in experimental studies, we proceed from the fact that we take synchronous speeds of rotation of the electric motor (respectively, it will be the same for the impeller) n = 750, 1000 and 1500 min -1 , but for more accurate readings we take a step of 250 min -1 , respectively, points will be next n=750, 1000, 1250, 1500 and 1750 min -1 .…”

“…The experimental part was carried out on a specially designed stand [2,3,4], which allows sampling in two modes: continuous and periodic.…”