Switching pump with filling and/or emptying on both sides

摘要

The rotary pump (1) has a pump housing (2) that is provided with a pump chamber (3). The pump chamber is provided with an inner rotor (4) such as gear or impeller and an outer rotor (5) such as internally toothed counter gear. An inlet port (6) arranged in housing is provided for supplying medium into the pump chamber. An outlet opening (7) is provided for discharging the medium from the pump chamber. The pump chamber is provided with an inlet port (16) and/or outlet opening (17) for the medium.