| 摘要 |
PURPOSE:To have possibility to change the amount of liquid discharged from the aux. pump chamber in any desired manner by arranging an aux. leak discharge valve and an adjusting valve for controlling the effective area of the leak passage in the aux. liquid leak passage and by adjusting this adjusting valve. CONSTITUTION:An Aux. leak passage 20 is furnished, whose one end is open at the aux. pump chamber 3B and the other is open at the aux. liquid incoming line 11 on its upper flow side of an aux. suction check valve 11B, and in this aux. liquid leak passage 20 are installed an aux. leak discharge valve 20A, which admits only outflow of liquid from the aux. pump chamber 3B out to the aux. liquid incoming line 11, and a control valve 22 which is capable of controlling the effective section area of leak passage 20. Accordingly the amount of liquid discharged from the aux. pump chamber 3B can be changed in any desired manner by adjusting the adjusting valve 22, and particularly in case this is used as a mixing pump for liquids in two or more different types, the mixing ratio of liquids can be changed according to any request through control of the adjusting valve 22. |
