Novel cavitation-free water-ring vacuum pump

The utility model relates to the technical field of pumps, in particular to a novel cavitation-free water-ring vacuum pump. The novel cavitation-free water-ring vacuum pump is characterized in that a water ring pump exhaust port, an atmosphere jet pump, a connector, a motor, a water ring pump air inlet, a water-ring vacuum pump, a shaft , a grounding pumping system and a jet exhaust port are comprised; in the novel cavitation-free water-ring vacuum pump, the atmosphere jet pump is arranged at the front end of the water ring pump air inlet and comprises an air inlet pipe, a jet nozzle, the grounding pumping system, an atmosphere jet pump body, a diffuser and the jet exhaust port; and the jet exhaust port is connected with the water ring pump air inlet. The utility model has the benefit of having a cavitation-free function, has the characteristics of high-temperature resistance and high-pressure resistance, resistance to corrosion, long service life and the like, is labor-saving to operate, and is flexible and