Energy-saving air purifier

The utility model provides an energy-saving air purifier. The energy-saving air purifier comprises a case, wherein an opening is formed in one side of the case; the supporting plate is fixedly installed on the inner wall of the machine box in a sealed mode, and a backflow hole is formed in the supporting plate; the fan is fixedly mounted at the top of the supporting plate; the mounting pipe is fixedly mounted on one side of the case; the corrugated pipe is fixedly arranged on the mounting pipe in a sleeving manner; and the air suction cover is fixedly mounted at one end of the corrugated pipe. The energy-saving air purifier provided by the utility model has the advantages that the placement position of the air suction cover does not need to be supported and fixed, so that the air purifier is convenient to move, smoke dust generated by electric welding operation can be subjected to primary dust falling and cooling, the replacement frequency of the air filter screen is reduced, the cost is saved, and the servic