Coke dry quenching furnace kiln eye sealing arrangement

The utility model discloses a sealing device of an observation hole of a coke dry quenching chamber. The sealing device is arranged on the observation hole which is positioned at the upper part of a chute of a chamber body of the coke dry quenching chamber, the sealing device comprises a middle bolt and an end cover, the middle bolt is arranged in a port of the observation hole, the bottom part of the end cover is covered on the port of the observation hole and is covered on the outside of the middle bolt, a downward annular protuberance is arranged at the outer wall of the upper end of the middle bolt, the lower end of the middle bolt is plugged in the observation hole and plugged in the observation hole through the annular protuberance, thereby being connected with the observation hole in a sealing manner. The sealing device is inserted in a groove which is increased by the observation hole through the annular protuberance, thereby greatly improving the sealing effect, avoiding the leaked external air from