Patent ID: 7776213

Claim:
An eductor system to mix fluids having a primary fluid and a secondary fluid to be mixed, comprising: a cylindrical housing adapted to be inserted into a pipe having primary and secondary fluid inlets, an inner cylinder positioned inside the cylindrical housing to form an annulus between the inner cylinder and the housing, a filter assembly adapted to prevent solid particles in the primary fluid from flowing through the venturi assembly, in fluid communications with the primary fluid inlet, a baffle down stream of an inlet to the filter assembly, a secondary fluid distribution channel in fluid communications with the secondary fluid inlet, a venturi assembly positioned inside the annulus, comprising a contracting venturi inlet in fluid communications with the filter assembly, a linear venturi in fluid communications with the venturi inlet having an opening in the form of a ring, a plurality of gaps, having at least one on each side of and in fluid communications with the venturi and the secondary fluid distribution channel, a venturi outlet for the mixture of primary and secondary fluids in fluid communications with the venturi and the gaps, wherein the primary fluid from the primary fluid inlet flows into the housing, where it is partially blocked by the baffle causing a differential pressure across the eductor, and forces the primary fluid to flow through the filter assembly, through the contracting venturi inlet, accelerates as it flows through the venturi, draws in the secondary fluid through the gaps from the secondary fluid distribution channel by suction and mixes it with the primary fluid, the primary and secondary fluid mixture exits the eductor through the venturi outlet.