Experimental study on the vibrational transport of bulk solids
1988; Elsevier BV; Volume: 55; Issue: 2 Linguagem: Inglês
10.1016/0032-5910(88)80091-3
ISSN1873-328X
Autores Tópico(s)Belt Conveyor Systems Engineering
ResumoThe sliding regime in vibrational transport was investigated on a laboratory-scale vibrating conveyor driven by a pneumatic ball vibrator. It was found in the literature dealing with the theoretical basis that the Blekhman and Dzhanelydze diagram is suitable for presenting visually the systematic sliding regimes and for identifying the operating conditions which occur in practice, depending on the parameters of the vibrating device (α — inclination angle, β — azimuth angle of excitation) and on the friction coefficient (fo) of the material transported. Experiments were carried out using different sorts of model materials and the delivery speed values were measured and compared with the formula derived from theory. The accuracy of this formula is found to be good in practice. Nevertheless, an improvement of the calculation seems to be necessary in order to take into account some other parameters of the materials and technology that can influence the transport. According to the results of the dynamic and transport test of the conveyor driven by pneumatic ball vibrator, the delivery (mass flow) can be controlled easily in the range below resonance, and continuous operation of plant equipment used in the processing of granular materials (drying, granulation, cooling, etc.) can be based on this principle.
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