Cooling device of water-ring vacuum pump

The utility model provides a water ring type vacuum pump cooling device which comprises a vacuum storage device for collecting liquid pumped out of a device to be vacuumized and a condensing device for condensing condensable gas pumped out of the device to be vacuumized, and a feeding port of the vacuum storage device is connected with the device to be vacuumized through a pipeline. An air outlet of the vacuum storage device is connected with an air inlet of the condensing device through a pipeline, and a discharge port of the condensing device is connected with the water-ring vacuum pump through a pipeline. The cooling device of the water-ring vacuum pump can ensure that condensable gas and liquid pumped out by the vacuumizing device enter the water-ring vacuum pump to be collected, prevents the water-ring vacuum pump from sucking too much water vapor, improves the vacuum degree of a vacuum system, is favorable for prolonging the service life of the water-ring vacuum pump, and reduces the production cost. Th