초록 ▼

Disclosed is an aeration device for aerating liquids having a foam-forming tendency. The amount of foam generated by such an aeration device is controlled by having the air inlet disposed at a predetermined foam level. The liquid inlet is disposed near the surface of the liquid to be aerated, such t

Disclosed is an aeration device for aerating liquids having a foam-forming tendency. The amount of foam generated by such an aeration device is controlled by having the air inlet disposed at a predetermined foam level. The liquid inlet is disposed near the surface of the liquid to be aerated, such that solid particles floating thereon are taken into the aerator. Air and liquid are combined in the aeration device producing the desired foam. The foam level is prevented from exceeding the level of the air intake due to the fact that air is required to produce the foam, and if the foam level exceeded the air intake, it would be ingested into the pump reducing the amount of foam produced thereby. Particular embodiments disclose concentric foam and liquid intakes to a submersible aeration pump.

대표청구항 ▼

An aeration pump for controlling foam level and thus foam thickness when aerating liquids having a foam-forming tendency, wherein said pump is placed in said liquid, said liquid having a surface, said surface including foam thereon having a thickness, said pump comprising: pump means for mixing air

An aeration pump for controlling foam level and thus foam thickness when aerating liquids having a foam-forming tendency, wherein said pump is placed in said liquid, said liquid having a surface, said surface including foam thereon having a thickness, said pump comprising: pump means for mixing air And said liquid; liquid inlet means for transporting liquid from the vicinity of said surface to said pump means; and air inlet means, located in the vicinity of a desired foam thickness level and coaxially within said liquid inlet means forming an intermediate space of annular cross section which serves as the liquid inlet means, for conducting air to said pump means when said foam thickness is less than desired and for conducting foam to said pump means when said foam thickness is greater than desired, said liquid inlet means and said air inlet means have inflow edges that are arranged parallel to said liquid level, wherein said liquid inlet means and said air inlet means are funnel-shaped, and taper inwardly from said inflow edges towards said pump means.