Protective airtight door of coal mine refuge underground chamber

Abstract

The invention relates to a protective airtight door of a coal mine refuge underground chamber. The protective airtight door comprises a door frame (1) and a door body (2), wherein the door frame (1) is strip-shaped frame with a hollow part, the strip-shaped frame can be a frame-shaped framework combined and welded by channel steel, the periphery of the framework is respectively provided with fastening strips (9) extending outwards, the fastening strips can be I-beam reinforcing ribs, the door body (2) is in a rectangular plate-like structure, the main body of the door body (2) is larger than the hollow part of the door frame (1), a bulging part extends from the main body and can extend into the hollow part of the door frame (1), and the bulging part can be in a box-type reinforcing plate structure and can be filled with a heat-insulating material. The airtight door has simple integral structure, large strength and good sealing effect and can bear the shock wave of about 1Mpa; meanwhile, an emergency escape door is arranged on the door body, thus the problem that people cannot be easy to escape when the airtight door is blocked can be avoided; and besides, an observation window is arranged on the escape door and the heat preservation effect of the door is better.

Description

Technical field [0001] The invention relates to the field of safety protection for a fully mechanized coal mining face, in particular to a protective closed door for a coal mine refuge chamber. Background technique [0002] In my country’s energy industry, coal accounts for about 70% of my country’s primary energy production and consumption structure. It is expected that coal will remain my country’s main energy source for a long time to come. At present, with the rapid growth of my country’s economy, The development of the coal industry has put forward higher requirements. How to strengthen safe production and ensure the continuous, stable and healthy development of the coal industry has become an important goal of current coal production. [0003] In contrast, the form of safety production in coal mines in my country is very severe. In response to the continuous occurrence of coal mine safety accidents in recent years, underground rescue has become the focus of attention. Recently...

AI Technical Summary

Problems solved by technology

The first outer door adopts a protective airtight door that can not only withstand shock waves of a certain intensity, but also block poisonous and harmful gases; while the general underground airtight door is single-opening. When a mine accident occurs, if the airtight door is accidentally blocked, It will not be conducive to the smooth entry and exit of the victims

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