Patent ID: 7743914
Filing Date: 2010-06-29
Classification: B65G

Abstract:
1. A dust tight closed type belt conveyor for conveying dust contained materials to be scattered out during operation: which comprises; 1) an endless conveyor belt to be driven for receiving and conveying the materials, being laid out from an upstream side provided with a transfer section to a downstream side, 2) a supporting frame for supporting the conveyor belt from the backside thereof comprising a plurality of rollers arranged at regular intervals in a driving direction for supporting a main backside part of the conveyor belt and a plurality of glide plates arranged between the rollers in the driving direction for supporting both edges of the conveyor belt from the backside thereof in a manner that the conveyor belt is supported in a concave form, 3) a cover roof extending in the driving direction for dust tightly closing an upside space of the conveyor belt extending in the driving direction comprising a top plate pitched so as to spread from one of the glide plates through the upside space to the other of the glide plates, whereby the conveyor belt is supported in a form of concave by a plurality of rollers, a plurality of the glide plates contacted by the both edges of the conveyor belt and the cover roof closing the upside space over the conveyor belt all make a dust tight and closed conveying space extending in the driving direction; each supporting roller comprises horizontal center roller and a pair of half-length side slope rollers arranged at both sides of the center roller and upwardly inclined in the outside direction; and each glide plate is arranged at both sides of the conveyor belt and upwardly inclined in the outside direction with a larger oblique angle than that of side slope roller so as to make the edges of the conveyor belt bent inside for preventing meandering motion of the conveyor belt.