Twin Screw Pump as a positive displacement pump, the suction chamber of the pump should be closely separated from the discharge chamber. Therefore, the clearance between the pump body and the outer surface of the screw and between the screw and the screw should be as small as possible. At the same time, screw and pump body, screw and screw form mutual seal cavity to ensure airtight. Otherwise, there may be liquid backflow back from the gap.
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