Flue gas dust removal device used in copper rod smelting process

The utility model relates to the technical field of copper rod processing, in particular to a flue gas dust removal device used in a copper rod smelting process, which can automatically give an alarm when dust in a dust collection pipe reaches a certain amount so as to remind a worker to clean the dust in the dust collection pipe in time. Comprising a bag-type dust collector, an exhaust fan, a pulse dust collection device, four sets of supporting columns, an ash conveying device and a quantitative alarm device, the exhaust fan is installed on the upper portion of the right end of the bag-type dust collector, and the input end of the exhaust fan is connected with the output end of the bag-type dust collector; the quantitative alarm device comprises a dust collecting pipe, a corrugated hose, two L-shaped frames, two sliding rods, two springs, two connecting plates, an audible and visual alarm and a switch assembly, the switch assembly is connected with the left connecting plate, and the audible and visual alarm