Safe thermal-insulated protective door with good airtightness

Abstract

The invention discloses a safe thermal-insulated protective door with good airtightness. The safe thermal-insulated protective door with the good airtightness comprises a door body, hand wheels, a large gear wheel, a large gear wheel shaft, a small gear wheel, a small gear wheel shaft, gear racks, extension bars, a support frame, and hinge assembles; the two hand wheels are mounted at two ends of the large gear wheel shaft; the hand wheels are connected with the large gear wheel shaft; and the large gear wheel is mounted in the middle of the large gear wheel shaft, the small gear wheel is engaged with the large gear wheel, the gear racks are engaged with the small gear wheel, the extension bars are welded to the side surfaces of the gear racks, and the support frame is fixedly mounted on the edge of the door body. According to the safe thermal-insulated protective door with the good airtightness, a plurality of the extension bars are applied to work simultaneously to achieve locking of the blast-resistant airtight door; by profile connection in a self-locking device, self-locking of the safe thermal-insulated protective door is achieved, a reliable connection in explosive blasts or drop shocks can be guaranteed, and at the same time good airtightness and thermal insulation are provided.

Description

technical field [0001] The invention relates to a hermetic door, in particular to a safe and heat-insulating protective door with good airtightness. Background technique [0002] Various airtight doors are used in human life and work, and the application range of airtight doors is getting wider and wider. Airtight doors are mainly used to prevent direct convection between the isolated space and the outside air, and form a certain airtight space in the isolated space. Negative pressure to reduce the pollution of the partitioned space to the outside world and ensure that the passage is not affected by heat waves. There are various airtight doors on the market, such as: fireproof airtight doors, heat preservation airtight doors and pressure airtight doors, etc., but these airtight doors have many problems such as poor reliability, poor adaptability, and single function. Many disadvantages of the door, the invention proposes a reliable connection in the event of explosion impac...

AI Technical Summary

Problems solved by technology

There are various airtight doors on the market, such as: fireproof airtight doors, heat preservation airtight doors and pressure airtight doors, etc., but these airtight doors have many problems such as poor reliability, poor adaptability, and single function. Many disadvantages of the door, the present invention proposes a safe and heat-insulating protective door with good sealing performance, good sealing and heat insulation, simple structure and convenient operation, which can be reliably connected during explosion shock or drop shock

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