PARAMETERS VARIATION OF THE VIBRATION MOVEMENT OF THE ELASTIC ARM-PALETTE SYSTEM AT THE MIXERS WITH VERTICAL AXIS, BY MODIFYING THE STIFFNESS IN ORDER TO IMPROVE THE HOMOGENIZATION PROCESS

Virgil Constantin ENESCU

Abstract


The vertical axis mixers efficiency is closely related to the homogenization degree of the prepared concrete. The mixture homogenization process is influenced by the palletes vibrational movement, as a result of the alternative bending of the mixer arm. For mathematical modeling of the mixing process, it is considered a vertical axis mixer of 2.25 m3, for which the bending  forces, the arrows, the pulsations and the amplitudes of the arm-pallete systems were analyzed in four cases. In order to make the mixing more efficient, the stiffness of the arm-pallete  system are successively modified, aiming to obtain proper pulsations as close as possible to the system excitation pulsation and amplitudes of movement as high as possible, in conditions of high reliability.


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References


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Prospectus for vertical axis mixer of 2.25 m3.


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