Membrane separation apparatus

A membrane separation device, comprising:

• a housing having an arc-shaped inner surface, the housing being provided with at least one medium inlet and at least one medium outlet used for discharging a separated medium;
• a rotor provided in the housing, the rotor being provided with at least two contact ends on an outer surface thereof, the at least two contact ends being constantly in sliding contact with the inner surface of the housing, the outer surface of the rotor and the inner surface of the housing forming sealed separate cavities between adjacent contact ends, the separate cavities being separated by the contact ends, an inside of the rotor being hollow, and a hollow part inside the rotor being used as a medium storage chamber;
• and
• separation chambers provided inside the rotor as a part of the rotor, one of the separation chambers being defined between the adjacent contact ends, each of the separation chambers being provided with a membrane therein for dividing the separation chambers into two parts, one inner part and one outer part, one-way valves corresponding to the separate cavities being provided on outer walls of the separation chambers for communicating with the separate cavities, medium outlets corresponding to the medium storage chamber being provided on inner walls of the separation chambers, the medium storage chamber being in communication with the medium outlets on the housing;
• wherein during a rotation of the rotor, a medium entering the separate cavities through the medium inlets on the housing enters the separation chambers through the one-way valves by pressure, and the separated medium passes through the membranes and enters the medium storage chamber from the medium outlets on the inner walls of the separation chambers, and then exits through the medium outlets on the housing.