Patent ID: 6491064
Filing Date: 2002-12-10
Classification: B01F,Y10T

Abstract:
An apparatus for injecting gas a into liquid medium flowing in a predetermined direction, comprising:an elongate pump pipe extending along a predetermined axis and having a closed end facing the flowing liquid medium and an open end disposed in the direction of the flowing liquid; an elongate air suction pipe coaxially disposed within the pump pipe to form an annular gap between the internal surface of the pump pipe and the external surface of the suction pipe and having a closed end disposed in the direction of the open end of the pump pipe and an open end extending through the closed end of the pump pipe for connection to a source of air, the suction pipe being provided in its periphery adjacent its closed end with a plurality of uniformly spaced elongate apertures; an elongate liquid medium drive pipe of substantially rectangular cross section having one end connected to a source of liquid medium and another end connected at an acute angle relative to the axis to the pump pipe through a rectangular opening remote from the apertures such that an internal surface of a sidewall of the drive pipe tangentially engages the internal surface of the pump pipe and the internal surface of the opposite sidewall of the drive pipe is tangentially aligned with the external surface of the suction pipe.