| 摘要 |
The invention concerns a pump (10) for metering liquids out of a tank (18) into a delivery line (11), the pump having, fitted on the output side, an airpurge device (12) which is designed to separate off gas, in particular air, entrained by the pressurized liquid being conveyed and to lead the gas away into a gas-collection space (15) which is at a pressure lower than that of the liquid. In order to ensure reliable purging, even with corrosive liquids, the pump is designed so that the purging device (12) has a semipermeable membrane (14), on one side (14') of which the pressurized liquid acts, the other side (14'') being in direct contact with the gas-collection space (15).
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