| 摘要 |
<p>In aeration devices for introducing gas into a liquid, there is the problem of the introduction body filled with gas being subjected to buoyancy. To eliminate this buoyancy, the introduction body is formed to be open at its free end and to be closed at its other end where it carries a fixing branch by means of which it can be connected to a gas supply distributor. The introduction body is surrounded by a perforated tubular membrane and a gas feed channel ends in the region of the membrane. …<??>To facilitate manufacture and assembly and to reduce the consumption of material, the introduction body is designed such that its gas feed channel passes through the fixing branch as a bore which is axially blind and that at least one radial outlet is present in the region of the membrane. Preferably, a longitudinal groove which allows uniform distribution of the gas extends from the outlet of the gas feed channel to a point in front of the free end of the introduction body. …<IMAGE>… </p> |
