Cleaning type ventilation protection air-tight door

A technology for airtight doors and cleaning, which is applied in the direction of ventilation arrangement, door/window fittings, wing leaf arrangement, etc. It can solve the problems of poor sealing between the inner airtight door and the rectangular installation frame, and achieve a good closing effect

Active Publication Date: 2019-12-03
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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  • Cleaning type ventilation protection air-tight door
  • Cleaning type ventilation protection air-tight door
  • Cleaning type ventilation protection air-tight 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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PUM

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Abstract

The invention relates to a cleaning type ventilation protection air-tight door. The cleaning type ventilation protection air-tight door comprises a door leaf. Inner air-tight doors are arranged on theinner side of the door leaf and vertically hinged to the door leaf, and each hinge point is located on one side of the corresponding inner air-tight door. Opening and closing devices which are used for driving the inner air-tight doors to rotate are connected to the inner air-tight doors and connected with a transmission device. The input end of the transmission device is connected with a hand wheel, a weight is detachably connected to the hand wheel, the force, applied to the hand wheel, of the weight generates the torque to the hand wheel, and the direction of the torque is the direction ofthe process that the inner air-tight doors are closed by the hand wheel. The cleaning type ventilation protection air-tight door has the effect that after the inner air-tight doors are locked and closed, the airtightness is good.

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 Applications(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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