Chemical product pipeline flame arrester

The utility model discloses a chemical product pipeline flame arrester, which belongs to the technical field of flame arresters and comprises a flame arrester shell, an annular groove is arranged at the inner end of the flame arrester shell, a flame arresting core is slidably connected in the annular groove, and a flame arresting net is mounted on the surface of the flame arresting core. A semicircular assembly groove communicated with the annular groove is formed in the surface of the flame arrester shell, a cover plate is movably connected to the upper end of the flame arrester shell, a pair of extension blocks and a clamping groove are integrally formed in the end, close to the flame arresting core, of the cover plate, the clamping groove is located in the inner sides of the extension blocks, and the extension blocks are both in sliding connection with the semicircular assembly groove; threaded holes are formed in the left end and the right end of the cover plate and the upper surface of the flame arrester