METHODS AND RESULTS OF EXPERIMENTAL RESEARCH ON ENERGY SAVING FLUID FEEDER
DOI:
https://doi.org/10.31734/agroengineering2019.23.026Keywords:
vibration dispenser, optimization criteria, factor, flow, scatterplotAbstract
Having reviewed the theories of dosage, the authors of the research propose a scheme and design of a vibrating dispenser with the working body, which is made in the form of a cone, mounted in the lower part of the feed hopper, on the rods. In the static mode, the working body closes the output neck and prevents the free flow of feed. During the collapse of the working body with the help of an electromagnetic vibrator and a permanent magnet, the feed will be made by changing the physical and mechanical properties, namely by reducing the coefficient of internal friction.
The purpose of the research is to confirm the adequacy of the results of theoretical studies by comparing the oscillation parameters, obtained in a theoretical way.
For the research of the vibrating disk dispenser, we have developed an experimental facility, which provides for the means of regulation, measurement, registration, transmission, processing and storage of information. The installation covers the hardware component and the software.
The reliability of the results of theoretical studies, in particular the feeder dosage, was compared to the experimentally obtained feed with the set values of parameters and modes of operation. Deviations of the experimentally obtained feed values from the theoretical do not exceed the requirements of the permissible dosage accuracy.
The weights of the factors, influencing the feed of the dispenser, were determined using the screening experiment technique. The chart of significance of the level of the factors, selected by the Student's random balance method, demonstrates that the factors x1, x2 and x4 (the circular gap formed by the hopper neck and the working body, the oscillation amplitude, and the internal friction angle of the feed respectively) are significant with 95 % probability. The impact of the other factors is insignificant.
The regression equation in its decoded form supplies use of the calculated method to adjust the feed dosage of the compound feed with a vibrating dispenser by selecting the values of the considered factors that lie within the area of the experiment.
Basing on the regression equation, the response surfaces of the dependences are close to linear ones, which show that increase of the factors causes increase of the feed, and vice versa.
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