APPARATUS FOR CREATING LIQUID WITH FINE AIR BUBBLES, AND DEVICE FOR FINING AIR BUBBLES, USED FOR THE SAME

摘要

A device for creating a liquid with fine air bubbles, capable of efficiently creating the liquid containing sufficiently fine air bubbles and being simple and low in cost. A device for fining air bubbles, used for the apparatus, is also provided. A pressure pump (D) for sucking liquid from a liquid supply source (10) and sending the sucked liquid by pressure is provided in liquid supply pipeline (P). An air bubble liquid creater (A) for creating air bubble liquid by mixing gas into liquid by suction pressure of the pressure pump (D) is placed in the liquid supply pipeline (P), on the upstream side in a liquid supply direction of the pressure pump (D). A first air bubble fining device (B) for fining the air bubbles contained in the air bubble liquid created by the air bubble liquid creater (A) is placed in the liquid supply pipeline (P) on the downstream side in the liquid supply direction of the air bubble liquid creator (A). A second air bubble fining device (F) for further fining the air bubbles fined by the first air bubble fining device (B) is placed in the liquid supply pipeline, on the downstream side in the first air bubble fining device (B).