| 摘要 |
PURPOSE:To increase a ratio of a gas suction amount to a liquid suction amount by a method wherein, in a vortex flow pump which boosts and delivers liquid, sucked in a booster passage, through rotation of an impeller, a gas suction port is formed in the inlet part of the booster passage. CONSTITUTION:Gas is sucked through a gas suction port 31 when liquid is sucked through a suction port 4 to a booster passage 2, Water and air are agitated together by means of a vortex flow generated between an impeller 11 and the booster passage 2 to produce air bubbles. In this case, since the velocity of flow of liquid sucked in the booster passage 2 is rapid and a pressure is reduced at an inlet 3 of the booster passage 2, the efficiency of suction of gas to liquid through a gas suction port 31 formed in the inlet part 3 is high and gas is introduced through the gas suction port 31 along the inflow direction of liquid by means of a conduit 32 and therefore, suction of gas to liquid is smoothed. Thus, a gas suction amount is increased. |
