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A vertical axis dispersion turbine is of the type which has a stator consisting of a stator tube with a cylindrical guide ring of larger diameter than the tube defining an annular inlet, an axial rotor shaft freely rotatable in the stator tube and having several blades in the guide ring to draw a me

A vertical axis dispersion turbine is of the type which has a stator consisting of a stator tube with a cylindrical guide ring of larger diameter than the tube defining an annular inlet, an axial rotor shaft freely rotatable in the stator tube and having several blades in the guide ring to draw a medium to be mixed and dispersed downwardly through the annular inlet, and dispersion means through which the medium flows. The dispersion means consists of a dispersion element mounted on the guide ring in a plane transverse to the rotor shaft, either immediately above or below the rotor blades, or two dispersion elements above and below the rotor blades. The dispersion elements are axially adjustable, and may consist optionally of radial arms, or a grid with axial openings or a perforated plate with axial passages. The guide ring is slidably adjustable on the stator tube. The device may be used as a jet mixer for a medium or may be provided with a device for feeding a substance to be dispersed in the medium into the annular space between the stator tube and the rotor shaft.

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In a vertical axis dispersion turbine which has a stator consisting of a stator tube with a lower end, an essentially cylindrical guide ring of larger diameter than said tube mounted thereon generally concentric with the lower end portion of the stator tube and extending below said lower end to defi

In a vertical axis dispersion turbine which has a stator consisting of a stator tube with a lower end, an essentially cylindrical guide ring of larger diameter than said tube mounted thereon generally concentric with the lower end portion of the stator tube and extending below said lower end to define an annular chamber through which a medium to be mixed and dispersed may flow, an axial rotor shaft which is freely rotatable in the stator tube and has a rotor at its lower end with several blades inside the guide ring to draw the medium from above into and downwardly through the guide ring and dispersion means through which the medium flows, the improvement comprising: the stator tube and the rotor shaft cooperate to define a substantially annular passage which is unobstructed throughout its length and at its lower end; the relationship of the rotor blades to the lower end of the stator tube causes the downward flow of the medium through the guide ring to provide a venturi effect that produces a negative pressure in said annular passage; and the dispersion means consists of a dispersion element which is mounted on the guide ring in a plane transverse to the rotor shaft near the blades of the rotor and which is constructed and arranged for axial flow of the medium therethrough so as to reduce rotational flow of the medium and enhance the venturi effect.