Rigid cathode wire suitable for electric precipitation

The utility model discloses a rigid cathode wire suitable for electric precipitation, and relates to the technical field of cathode wires. The cathode coil comprises a fixing disc, a fixing column and a fixing cylinder are installed on the upper side of the fixing disc, a plurality of cathode coil bodies are evenly distributed and installed between the fixing column and the fixing cylinder, and clamping grooves are formed in the two sides of each cathode coil body. A plurality of first grooves are evenly formed in the outer side of the fixing column, and first springs are installed in the first grooves. According to the utility model, through the arrangement of the first rotating assembly and the second rotating assembly, when the cathode coil needs to be mounted and dismounted, the first rotating assembly and the second rotating assembly are rotated to drive the two arc-shaped plates to move, so that the mounting and dismounting of the cathode coil body are completed, and the replacement of the cathode coil