Vacuum purification device

The utility model aims to provide a vacuum purification device, and belongs to the technical field of vacuum adsorption sieves. The filter comprises a sealing shell, a filter screen and baffles arranged in an up-down staggered mode are arranged in the sealing shell, and the baffles are arranged below the filter screen; a bottom plate of the shell is obliquely arranged, an air inlet connected with a negative-pressure air inlet pipeline is formed in the bottom of one side of the shell at the higher end, and a sewage draining outlet connected with a sewage draining pipeline is formed in the bottom of one side of the shell at the lower end; the air inlet and the drain outlet are formed below the baffle, and the air inlet is higher than the drain outlet; and an adsorption opening connected with the adsorption pipeline is formed in the shell above the filter screen. According to the utility model, the quality of sucked air is purified, substances such as mud are effectively prevented from entering the vacuum genera