Intensification of the process of dosing bulk concentrated feeds by sieve hopper
Journal Title: Восточно-Европейский журнал передовых технологий - Year 2019, Vol 2, Issue 1
Abstract
<p>The study addresses the development and substantiation of parameters for the hopper that is installed in the technological process for producing concentrated bulk feeds. The structures of hoppers, the ways of improving productivity and the quality of their operation were analyzed and the prospects for the development of this direction were determined. The effectiveness of dosing was enhanced by the modernization of the sieve hopper with a rarefied discharge of dosed material due to the use of the openings in the form of a five-petal epicycloid.</p><p>To determine the rational design and kinematic parameters of the modernized sieve hopper, mathematical modeling of the movement of bulk medium was carried out, conditions of the process were selected and final mathematical expressions were found. In addition to the parameters of the moving hopper in expressions and during the experiments, the properties of bulk feeds were explored. The ranges of variation in the sizes of the holes of the bottom and upper sieves were determined, the amplitude and frequency of their oscillations, which are the important parameters of the process of dosing bulk feed on the proposed hopper.</p><p>The modeling results were proved by the conducted experimental research. The dependences of the performance of a sieve hopper on its design and kinematic parameters in its basic and upgraded versions were experimentally established. The adequacy of the developed modeling was proved by admissible discrepancy of the results with the experimental results.</p><p>Using these dependences on the condition of maximum effectiveness of dosing, the ranges of variation in the performance of the upgraded hopper, which amounted to 0.75…2.6 t/h were determined. It was established that the use of sieves with activators enhances the performance of the hopper by 15...44.4 %. The adequacy of the developed mathematical modeling was proved by admissible discrepancy of the results and experiments, which did not exceed 5 %.</p>The result of our research is the devised procedure for studying the sieve-type hoppers, which implies a possibility to explore the impact of shapes and sizes of openings on the effectiveness of dosing bulk feeds
Authors and Affiliations
Alexander Nanka, Sergei Kharchenko, Volodymyr Sementsov, Vitaliy Sementsov, Magomed Abduev
Keywords
Related Articles
- EP ID EP666262
- DOI 10.15587/1729-4061.2019.161410
- Views 59
- Downloads 0
Development of a technique to control and ensure the predefined porosity of a grain layer in the pneumo-separating channel at a grain heap cleaner
<p><span style="font-family: 'Times New Roman'; font-size: small;">To operatively control the state of a layer of the separated grain heap, while cleaning it from impurities in a pneumo-separating channel, it has been su...
Current distribution of 137cs in sod-podzolic soils of different types of forest conditions
We have examined the current distribution of <sup>137</sup>Cs in the turf-podzolic forest soils for different types of forest conditions. The analysis of the redistribution of <sup>137</sup>Cs in soil in 30 years after t...
Experimental study into optimal interdependence of energy-time costs for emptying a dry dock
<p>The influence of discrete properties of the microprocessor control systems based on Arduino Due on the accuracy of the physical model of the dock pumping station by modeling in MATLAB was assessed. In this case, such...
Calculation of toothed gear mechanisms in machines and assemblies considering the effect of lubricants
<p>The basic criteria of operational efficiency of most toothed gear mechanisms is the contact endurance of the conjugated surfaces of the teeth and the flexural endurance of teeth legs. In this case, the calculation bas...
Development of models and research into tooling for machining centers
<p>We have constructed three-dimensional solid models for tool storage of the disk type (for 14 instruments) and the chain type for 32 tools, mounted onto the side surface of a machine column. We propose a 3D model of th...