| 摘要 |
PROBLEM TO BE SOLVED: To degas by a simple configuration and with low noise by providing a liquid pump, having an inlet for fluid pulled into a closed pump housing and an outlet for pressure and a gas pump, having an inlet for gas pulled into a high position in the pump housing and an outlet for gas. SOLUTION: This pump, used suitably in a fuel pump used at an oil-filling station consists of a two step centrifugal pump and is provided with two rotors 1, two stators 2, and one pressurizing chamber pump outlet 3. A liquid ring pump 7 is arranged on the same axis as this pump and on an upper side of the pump, fluid is supplied into the pump through an intake pipe 12, and the fluid leaving the pump 7 is discharged into a steam return passage or a collection vessel 17 through a discharge pipe 16. Gas is separated from fuel in this collection vessel 17, the separated gas is discharged to the atmosphere from an opening 18, and the separated fuel at the maximum fuel level or more is discharged through an intake pipe 19.
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