Air pump

摘要

An air pump (10) having a separation chamber (15) defined by a top wall (11), a bottom wall (12) and generally annular side walls (13). A liquid entry tube (24) configured to draw air into a stream of liquid passing through the liquid entry tube is coupled to the separation chamber so that the air/liquid mixtures rotates within the separation chamber. The rotation of the mixture causes air to accumulate within a central zone (30) and the liquid to accumulate about a peripheral zone (31). The continued flow of the mixture causes the accumulating air to become pressurized where it is released through an air exit tube (20) in fluid communication with the central zone of the separation chamber. The liquid is expelled through a liquid exit port (18).