Protective device for mirror spark machine

The utility model discloses a protective device for a mirror spark machine, which relates to the technical field of mirror spark machines and comprises a workbench, the workbench comprises a spark machine body, and the protective device is movably mounted on the outer surface of the lower end of the spark machine body. According to the utility model, the suction mechanism, the filtering mechanism and the circulating mechanism are matched together, so that the problem that harmful gas generated during the operation of the spark machine escapes is solved, the dust hood, the telescopic hose and the fan are matched, harmful smoke generated in the air is sucked and concentrated, the harmful smoke is prevented from escaping everywhere, the overall protection effect is enhanced, and the service life of the spark machine is prolonged. The flue gas treatment device has the advantages that flue gas is subjected to multiple effective filtration through joint cooperation of the filter screen plate I, the filter screen pl