Efficient rotor pump

The utility model relates to high-efficiency rotor pump which belongs to the field of a volumetric pump and comprises a front pump cover and a back pump cover of the pump, a pump body processed with a liquid inlet opening and a liquid outlet, a gear case, a driving shaft in the gear case, a bearing assembly and a rotor arranged on a driven shaft. The utility model is characterized in that 1) a sliding bearing sleeve is engaged on the contact point of the inside of the front pump cover and the rotor; 2) an anti-abrasive oral ring is fixed on the periphery surface of the rotor so as to strengthen the abrasion resistance of a front end cap of the pump and to prolong the service life; 3) a throttling disk of which the axial section is in a T-shaped structure is arranged between the pump body and the gear case, one end of the throttling disk is sheathed on the driving shaft and the driven shaft, and the other end and a bearing cap of the gear case are fixedly connected into integration. After the utility model is improved by the structure, because the structure of the pump is optimized, and the reasonableness of the structure of the pump is strengthened so as to solve the insufficiency existing in the prior art, to ensure the normal safe operation of the pump, and to entirely increase the service life of the pump.