External gear pump for liquids or elastic fluids, particularly hydraulic medium, such as oil, comprises two mutually meshing outer gears and additional displacement body arranged in displacement hull construction

摘要

The external gear pump (1) comprises two mutually meshing outer gears (8,9) and an additional displacement body (19) arranged in a displacement hull construction for the representation of an additional displacement pump (20) in one of the outer gears. The additional displacement body is arranged in a driven gear of the external gear pump. The additional displacement pump is executed as gerotor pump, an internal gear pump or planetary wheel pump. The additional displacement body has an external toothing or a gerotor external toothing (23).