DEVICE FOR CONTROL OF HUMIDITY OF LOOSE MATERIALS IN THE STREAM OF THE SUBSTANCE

Abstract

Improvement of the design of the sample preparation device for bulk materials during the flow control of their moisture content, based on the use of the vibrating process to stabilize the bulk density, will ensure continuity of the flow of bulk materials. The accuracy of humidity measurement will be increased by using dielectric metric methods due to the decrease in the through conductivity of loose materials, which is associated with the rupture of contact bridges between their particles in the vibrating mass. An analysis of the results of an experimental study of bulk materials in a vibrating state shows that the use of such a grain state is advisable for the following reasons. Firstly, at a constant vibration amplitude, the bulk density of the grain mass stabilizes, and secondly, it’s through conductivity sharply decreases, which is explained by the ruptures of contact bridges between the particles in the vibrating fluid mass of bulk material. Combination of the process of vibration for the purpose of stabilizing the bulk density of bulk material with its simultaneous transportation through the cavity of the vibration chamber is carried out in the device proposed by the authors. In order to ensure the stabilization of the bulk density of bulk material, a device has been new developed.

Keywords: bulk material, density, grain, hopper, moisture, primary converter

Article DOI: http://doi.org/10.15544/RD.2017.182