Airtight blast door for underground refuge chamber

Abstract

The invention discloses an airtight blast door for an underground refuge chamber. The door comprises a door leaf, a door frame, a sealing structure and a locking device, wherein the door leaf comprises an arc door leaf positioned on the outer side and a flat-plate door leaf positioned on the inner side; the arc door leaf comprises an arc shell plate and a fixing plate welded on the arc shell plate; a reinforcing plate is arranged between the arc shell plate and the fixing plate; heat insulation cotton is filled between the arc shell plate and the fixing plate; the flat-plate door leaf comprises a plane cover plate; the plane cover plate is arranged on the fixing plate through a connecting seat welded on the fixing plate; and heat insulation cotton is filled between the fixing plate and the cover plate. The arc shell plate is arranged, so that the explosion shock wave bearing capacity of the door leaf can be enhanced; the heat insulation cotton is arranged, so that external high temperature can be isolated; and sealing strips are arranged on the edge of the periphery of the door leaf, and metal pressing strips and a multi-point locking mechanism are arranged on the door frame corresponding to the sealing strips, so that the air tightness of the airtight blast door is ensured, and external poisonous and harmful gas is prevented from invading.

Description

technical field [0001] The invention relates to a protective airtight door, in particular a protective airtight door for an underground refuge chamber integrating three functions of pressure resistance, airtightness and heat insulation, capable of resisting explosion shock waves and preventing poisonous gas from entering the refuge chamber and Insulate from high temperature outside. Background technique [0002] In recent years, various mine accidents have occurred frequently in our country. Due to the characteristics of large destructive power, complicated accident causes and easy to cause secondary accidents in mine accidents, it is impossible for the outside world to carry out rescue in time after the mine accident occurs. And underground because the vast majority of casualties caused by accidents are all caused by miners in distress who cannot find safe places of refuge in time. In order to speed up the construction of the mine emergency rescue system and minimize accid...

AI Technical Summary

Problems solved by technology

[0005] ① When a mining disaster occurs, in an emergency situation where people need to enter the refuge chamber to escape, the opening and closing of the protective door is laborious and time-consuming, not flexible and fast enough, and it is easy to delay the precious time for emergency escape;

[0006] ② The limit device of the locking mechanism of the existing prot

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