Vacuum Pump for Rotary Evaporator

Vacuum pumps for rotary evaporator are centrifugal mechanical pumps. The impeller rotor is installed eccentrically in the cylindrical pump casing, and its blades are forward curved. When the impeller rotates, the working water forms a water ring that swirls along the pump casing under the action of centrifugal force. Due to the eccentric position of the impeller, the water ring moves relative to the blades, so that the space volume between two adjacent blades changes periodically.

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