Delivery device for a flexible liquid container

A delivery device for delivering liquid comprising:

• a flexible container containing the liquid;
• a housing having a first wall provided with a housing first linear gear having housing first linear gear teeth and a second wall provided with a housing second linear gear having housing second linear gear teeth, where the housing is configured to receive the flexible container;
• a first roller having a first compound gear comprising a first gearwheel provided with first gearwheel teeth, a second gearwheel provided with second gearwheel teeth and a third gearwheel in rotating engagement with the housing second linear gear teeth;
• and
• an actuator comprising an actuator first linear gear provided with actuator first linear gear teeth,
• wherein the first gearwheel teeth are configured to mesh with the housing first linear gear teeth and the second gearwheel teeth are configured to mesh with the actuator first linear gear teeth,
• wherein the actuator is configured to be moved linearly from a first position to a second position along a longitudinal axis defined by a longitudinal extension of the housing first linear gear, causing the first roller to be translated along the housing first linear gear, to squeeze liquid from the flexible container,
• wherein the first gearwheel has a diameter which is less than that of the second gearwheel.