Central dust collection device of water ring vacuum pump

The invention discloses a central dust collection device of a water ring vacuum pump, and relates to the field of central dust collectors, the central dust collection device comprises a motor, a pump body and a water tank, an air suction disc and an exhaust disc are mounted in the pump body, blades are arranged in the pump body, and the motor can drive the blades to rotate; a water pump is installed in the water tank, a water inlet pipe is fixedly installed at a water outlet of the water pump, the water inlet pipe extends into the air inlet cavity, when the pump body sucks air, water and air can enter the pump body from the air inlet together and are mixed in the pump body, and the water can carry dust particles in the air to conduct centrifugal motion outwards under the action of centrifugal force; a drainage pipe is arranged on the side, close to the exhaust disc, of the pump body. Water and gas enter the pump body from the air suction port together in the air inlet pipeline, the water and the gas can be mi