The prime mover transmits power to the driving shaft of the pump through the speed transmission mechanism, and the driving shaft gear drives the driven shaft gear to move synchronously. The relative movement between the rotor and the pump body changes the working volume, thereby increasing the energy of the liquid and forming a suction chamber, a closed chamber and a discharge chamber. With the relative movement of a pair of rotors, the pump forms a vacuum in the suction chamber, and the fluid is continuously sucked in, flows through the closed chamber and is discharged from the discharge chamber to form a flow rate.
The volumetric efficiency of the pump is as high as 98%, and the flow rate of the pump is determined by the speed, and the change of its outlet pressure basically does not affect the change of the flow rate. The pressure difference formed by the pump depends on the resistance of the discharge system