Patent ID: 8876363

Claim:
An apparatus (1) for gassing liquids, comprising: a mixing tube (2) which has an inlet opening (7, 8) and an outlet opening (5); a feed pipe (12) which projects centrally into the mixing tube (2) and has a mouth opening (13) directed towards the outlet opening (5), wherein the feed pipe (12) is connected or connectable to a pressurised liquid source; a spreader (18) disposed in the mouth opening (13) which brings about spreading of the liquid; and a displacer (20) disposed at the outlet opening (5) of the mixing tube (2), wherein the displacer (20) is configured to provide surface distribution of a mixture of the liquid and a gas output from the mixing tube (2) wherein the mixing tube (2) comprises a cross-sectional narrowing (19) downstream of the mouth opening (13) for causing an acceleration of the mixture of the liquid and the gas, and wherein the displacer (20) is guided with axial displacement towards a central axis of the outlet opening (5).