Apparatus for collecting and removing solid particles from a flowing fluid

摘要

The method for intermittently applying particulate material (8) to a substrate involves providing a continuous supply of particulate material from a supply source to a valve having a powder application phase and a recycle phase. The valve is dispose the powder application phase to allow particulate material to pass through it and to fall freely onto at least a portion of the substrate. The valve is disposed in the recycle phase to prevent dispensing of the particulate material onto the substrate and t retain the particulate material within the valve to be conveyed back to the supply source.