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A clean ventilated protective closed door

A closed door, clean technology, applied in the direction of ventilation arrangement, door/window fittings, buildings, etc., can solve the problem of poor sealing between the inner closed door and the rectangular installation frame

Active Publication Date: 2021-05-07
HENAN JINMA HENGTAI CIVIL AIR DEFENSE EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the above-mentioned structure, the inner airtight door is locked with a bolt, and there is a clearance fit between the bolt and the hole where the bolt is connected, so that the airtightness between the locked inner airtight door and the rectangular mounting frame is relatively poor.

Method used

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  • A clean ventilated protective closed door
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  • A clean ventilated protective closed door

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Embodiment Construction

[0035] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0036] refer to figure 1 , is a kind of clean ventilated protective airtight door disclosed by the present invention, comprising a door leaf 1, two upper and lower rectangular mounting frames 11 are arranged on the inner surface of the door leaf 1, and inner airtight doors 2 are covered on the rectangular mounting frames 11, One side of the inner airtight door 2 is provided with a vertical rotating shaft 3, and the rotating shaft 3 is connected to the inner surface of the door leaf 1 in rotation, and an opening and closing device 4 is connected to each inner airtight door, and the opening and closing device 4 is installed on the door leaf 1 , the door leaf 1 is opened or closed by the opening and closing device 4 and the rectangular installation frame 11 is closed.

[0037] refer to figure 2 , the opening and closing device 4 comprises a main shaft 41, a c...

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Abstract

The invention relates to a clean ventilation protection airtight door, which comprises a door leaf. An inner airtight door is arranged on the inner side of the door leaf. The inner airtight door is vertically hinged on the door leaf and the hinge point is located on one side of the inner airtight door. The inner airtight door The top is connected with an opening and closing device for driving the inner airtight door to rotate. The opening and closing device is connected with a transmission device. The input end of the transmission device is connected with a hand wheel. The hand wheel is detachably connected with a heavy object. The force generates torque on the hand wheel and the direction of the torque is the direction in which the hand wheel closes the inner airtight door. The invention has the effect of good sealing performance after the inner airtight door is locked.

Description

technical field [0001] The invention relates to the technical field of a protective airtight door, in particular to a clean ventilation protective airtight door. Background technique [0002] The clean ventilation system is the most commonly used ventilation system in the subway civil air defense system. In the traditional clean ventilation protection system, the first door is a rubber hose valve protection door, which plays a role in reducing shock waves; the second door is a closed valve protection door. The secret door plays the role of switching between clean ventilation and isolated ventilation. The clean ventilation protection airtight door is a new type of clean ventilation protection airtight door that integrates the functions of the rubber hose valve protection door and the airtight valve anti-airtight door, and has the functions of ventilation, protection and airtightness. The clean ventilation protective airtight door concentrates the protective wave elimination ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E06B3/36E06B7/04E05F11/02E05F17/00E05C19/00
CPCE05C19/00E05F11/02E05F17/00E05F2017/008E05Y2900/132E06B3/36E06B7/04
Inventor 闫希国吕存良范全军
Owner HENAN JINMA HENGTAI CIVIL AIR DEFENSE EQUIP
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