它是利用吸气装置运行时所造成的真空负压状态将空气吸入，形成的微细气泡扩散于水中，粘附在水中的乳化油滴、悬浮物上，携带着一同上浮到水面，达到固-液分离的目的。

• The vacuum negative pressure condition, caused by the operating of inspirator, sucks the air, forms the fine air bubble, diffuse in the water, adhere to the emulsified oil and suspended matters in the water, arrive the water surface together, then achieve the solid-liquid separation.