Sacrificial anode protection device

The utility model provides a sacrificial anode protection device, and relates to the technical field of sacrificial anodes, the sacrificial anode protection device comprises a sacrificial anode block and a mounting rack, the two ends of the top of the mounting rack are fixedly provided with arc-shaped seats, the arc-shaped seats are slidably connected with arc-shaped fixing seats, and the arc-shaped fixing seats are fixedly connected with the sacrificial anode block. A clamping assembly used for fixing the arc-shaped base and the arc-shaped fixing base together is arranged between the arc-shaped base and the arc-shaped fixing base, the installation frame is divided into an upper supporting frame and a lower supporting frame connected with the upper supporting frame in a sliding mode, and a first elastic reset piece is installed between the upper supporting frame and the lower supporting frame. The clamping assembly enables the arc-shaped seat and the arc-shaped fixing seat to be fixed together, when the sacri