Although positive pressure conveying systems discharging to a reception point at
atmospheric pressure are probably the most common of all pneumatic conveying
systems, the feeding of a material into a pipeline in which there is air at a high
pressure does present a number of problems. A wide range of material feeding
devices are available that can be used with this type of system, from Venturis and
rotary valves to screws and blow tanks. With each type of feeder, however, there
is the potential of air leaking from the system, and carrying dust with it, as a result
of the adverse pressure gradient.
No comments:
Post a Comment