Patent ID: 6967010

Claim:
A chlorine dioxide generating apparatus, comprising: a venturi having an inlet end for receiving fluid and an outlet end for expelling fluid; a venturi body coupled to said outlet end of said venturi, said venturi body forming an extension of said outlet end of said venturi; a casing surrounding said venturi and defining a plenum therebetween, said casing being movably connected to said venturi body; a first sealing means provided between said casing and said venturi body for sealing said plenum; a collar surrounding an end of said casing adjacent said inlet end of said venturi, said collar and said casing defining a plenum entry ring therebetween; a second sealing means provided between said collar and said casing for sealing said plenum entry ring; at least one feed port for tangentially receiving reactants, said feed port extending through said collar and communicating with said plenum entry ring; at least one injection port for passing chlorine dioxide into said fluid, said injection port extending through said venturi adjacent said outlet end thereof, said injection port being in communication with said plenum; and wherein movement of said casing changes the volume and area of said plenum to determine the capacity of the generating apparatus.