Stainless steel rotory pump

With the suction (vacuum degree) that the two synchronous reversal rotory creates in the process of circumrotating, inhale the materials that need to transport.

The two rotors compart the rotor room into several small rooms, and run with the ABCD order: When they run to A, only A Room is full of medium; when they run to B Room, B Room closes down parts of the medium; when they run to C, A Room also closes down some parts of the medium; when they run to D, Room A and Room B communicate with Room D, then the medium is transported to the outlet.