Nitrogen protection device for processing PTFE (Polytetrafluoroethylene) film by sodium naphthalene

The utility model relates to a nitrogen protection device for processing PTFE (Polytetrafluoroethylene) film by sodium naphthalene, which comprises a PTFE film, a liquid coating roller and a chemical treatment liquid tank, the PTFE film is output from an unwinding roller, conveyed to the liquid coating roller through a conveying roller and then output from the liquid coating roller through the conveying roller, the protection device comprises a nitrogen protection cover and a nitrogen generator, the nitrogen protection cover is arranged above the liquid coating roller, and the nitrogen generator is arranged above the nitrogen protection cover. A plurality of nitrogen nozzles are arranged in the protective cover and communicated with a nitrogen generator through a nitrogen pipeline, and a control valve is arranged on the nitrogen pipeline. The nitrogen generator is communicated with the air compressor through a pipeline, and the nitrogen generator and the air compressor are electrically connected with the cont