Novel double-sealing energy-saving water-ring vacuum pump

The utility model relates to the technical field of pumps and particularly relates to a novel double-sealing energy-saving water-ring vacuum pump. The novel double-sealing energy-saving water-ring vacuum pump is characterized by comprising a pump cover, a disc, a flat key, an impeller, a mechanical seal, a pump body, a motor, a flexible exhaust valve sheet and a seal ring, wherein the seal ring is arranged between the pump body and the disc and is used for adjusting the gap of end surfaces of the pump body and the disc; the gap between the impeller and the disc on the pump cover is adjusted by the seal ring between the disc and the pump body; and the gap between two end surfaces of the impeller and the disc on the pump cover determines the loss volume and the ultimate pressure of air flowing from an air inlet to an air outlet in a pump cavity, therefore, with the adoption of the seal ring, the flow loss of air is reduced, the consumption is also reduced, finally, the energy-saving effect is achieved.