The device according to the invention for conveying fluid comprises a conveying chamber, an inlet valve, which is located in the direction of flow, upstream of the conveying chamber, and with an outlet valve, which is located in the direction of flow, downstream of the conveying chamber. Moreover, an injector is provided for, whose suction duct is connected with the conveying chamber. Via an air duct, which is connected to the conveying chamber, exhaust air (AL) can be blown into the conveying chamber.