| 摘要 |
PURPOSE: A return tunnel belt conveyor system is provided to prevent environmental pollution by restricting dust from being dispersed with returning the return belt to the upper part of the transfer belt, and to improve transfer efficiency by preventing loss of material and inflow of rainwater. CONSTITUTION: A return tunnel belt conveyor system is composed of return belts(1b,2b,3b) returning to the upper parts of transfer belts(1a,2a,3a) with passing auxiliary pulleys installed to discharge chutes without interference; a lower support roll(20) supporting the return belts in the lower part; and an upper support roll(30) supporting the return belts in the upper part. Environmental pollution is prevented by restricting dust from being dispersed, and transfer efficiency is improved by restricting loss of material and inflow of rain water.
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