We study an actual problem of cleaning of conveyor belts from adhered finely divided materials in the process of operation of belt conveyors. The material remaining on the belts causes numerous problems for the conveyor transport. In the course of time, adhered particles fall into the subconveyor space, thus violating the normal operation of the conveyor. This also leads to rapid failures of the roller supports, excessive abrasion of the working surface of the belt, and hence, to a more rapid wear of the conveyor belt. The procedure of cleaning of the belts enables one to remove the indicated problems. At present, there are various types of available cleaning units. Each of these units has its own advantages and disadvantages. In most cases, this complicates the choice of the required unit. We estimate the efficiency of application of a discrete double-row scraper cleaner of the conveyor belt. Its application increases the degree of cleaning without damaging the surface of the belt due to the presence of a counterbalance clamping attachment.
Abstract-The equilibrium potentials of praseodymium diluted homogeneous Pr-Ga-In alloys in a (Li⎯K-Cs)Cl eut based salt electrolyte were measured between 573-1073 K by the emf method. These potentials are used to calculate the activity coefficients of α praseodymium in liquid Ga-In eutectic alloys. PrIn 3 alloy with well known thermodynamic characteristics and without phase transitions in the temperature range 428-1483 K was employed as the reference electrode.
The arguments for widespread use of the new class of fibre laser in the design of the technological equipment and introduction of laser technologies in production are given. The technological possibilities of these laser are demonstrated.
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