Cathode wire for electric precipitator

The utility model discloses a cathode wire for an electric dust remover. The device comprises a supporting rod, a placing groove and springs, movable grooves distributed in parallel at equal intervalsare symmetrically formed in the outer walls of the two sides of the supporting rod, containing grooves are formed in the lower ends of the movable grooves, limiting grooves are formed in the upper ends of the inner walls of the containing grooves, push plates are arranged in the containing grooves, barbs are arranged in the movable grooves, limiting blocks are welded to one ends of the barbs, andthe limiting blocks are located in the limiting grooves. According to the utility model, the placing groove, the limiting block and the limiting groove are arranged; the effect of fixing the barbs isachieved; when the barbs are damaged by high-temperature gas and corrosive gas, technicians manually rotate the barbs to enable the barbs to be separated from the limiting grooves, the purpose that the barbs are convenient to