Permanent cathode for closed electrolytic cell

The invention discloses a permanent cathode for a closed electrolytic cell. The permanent cathode comprises a cathode plate. A conducting bar is arranged at the upper edge of the cathode plate. A cable connecting device is arranged at the end of the conducting rod. Cathode supporting hangers are arranged on two sides of the cathode plate. Solution through holes and solution discharging holes are formed in the lower part of the cathode plate. The conducting rod is the core-wrapped structure of a titanium tube coated copper rod. The cathode plate is a titanium plate. The conducting rod is weldedto the cathode plate. Two faces of the cathode plate are sand-blasted or polished. Metal with electrode position is high in adhesion and is not liable to upwrap and fall. Disassembling and mounting are convenient, electrode positioning is accurate, solution flowing distribution is uniform, the solution can be conveniently discharged, corrosion resistance of the conducting rod is high, connectingis convenient, voltage of