Pumping device for pumping of liquid, has free piston arranged in cylinder, chamber connected with supply line and provided in cylinder, and heat transfer device for transmission of waste heat from chamber to additional pump units

摘要

The device has a free piston (12) arranged in a cylinder (10). An expansion chamber (14) is connected with a supply line (16) and provided in the cylinder. Additional pumping devices (30) are arranged outside the cylinder. A heat transfer device (24) enables transmission of waste heat from the expansion chamber to additional pump units. The heat transfer device is arranged between one of the additional pumping devices and the cylinder. Passages (34) and/or spacers (36) are openable and closable by sliders.