Blending apparatus and method

摘要

An in-line blender for blending components, in the form of liquid or other fluent materials including a pipeline having a plurality of injection points, each injection point being connected to a set of selector valves and each selector valve being connected to a separate component source. Only one of these selector valves at a time is connected to the injection point. Between the set of valves and the injection point there is mounted a metering apparatus in the form of a positive displacement pump and a meter 14.