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Airtight door system

A technology for airtight doors and door frames, which is applied in the field of airtight door systems, can solve problems such as decreased airtightness, increased gaps, shrinkage of sealing rings, etc., to achieve good airtightness, slow down the speed of melting, and prolong the time of leakage Effect

Active Publication Date: 2019-06-21
HANGZHOU TENGRUIYUAN CIVIL AIR DEFENSE ENG CO LTD
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Problems solved by technology

[0004] The above-mentioned technical solution has the following defects: because the average temperature of each season is different, and the temperature difference between winter and summer is relatively large, the main body of the airtight door will expand with heat and contract with cold. The gap between the protective frames increases, and the sealing ring shrinks due to low temperature, resulting in a decrease in sealing

Method used

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Embodiment Construction

[0033] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0034] A kind of airtight door system, refer to figure 1 and figure 2 , including a door frame 1 and a door body 2 hingedly mounted on the door frame 1. The door frame 1 is provided with a fitting groove 11 communicating with its inner peripheral surface toward the closed side of the door body 2. Correspondingly, the side wall of the door body 2 is integrally formed with a The door edge 21 snap fit with the fitting groove 11 .

[0035]The inner peripheral surface of the door frame 1 is provided with a ring-shaped accommodation groove 12, and a rubber sleeve 13 is arranged in the accommodation groove 12. The rubber sleeve 13 is made of fluorine rubber, and the outer wall of the rubber sleeve 13 is coated with a fireproof coating layer. (not shown in the figure), the fireproof coating layer adopts the CDDT-AA type cable fireproof coating produced by Hebei We...

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Abstract

The invention relates to an airtight door system, and relates to the technical field of civil air defense equipment. The airtight door system comprises a door frame and a door body rotationally mounted on the door frame, an embedding groove is formed in the closed side, facing the door body, of the door frame, and a door edge clamped and matched with the embedding groove is arranged on the side wall of the door body, a containing groove is formed in the inner circumferential face of the door frame, a rubber sleeve is arranged in the containing groove, and an inflation assembly connected with the rubber sleeve is arranged on the door frame, the rubber sleeve is provided with an air pressure sensor electrically connected with the inflation assembly, the door frame is provided with an air outlet pipe connected with the rubber sleeve, a sealing plug is arranged on the door edge, and a microswitch is further embedded in the door frame. The inflation assembly is controlled to inflate and deflate the rubber sleeve through opening and closing of the door body, and the air pressure sensor enables the air pressure in the rubber sleeve to be kept constant, so that the rubber sleeve is alwaysbulged when the temperature is reduced, the influence of the temperature on the rubber sleeve is greatly reduced, and good sealing performance is kept between the door body and the door frame.

Description

technical field [0001] The invention relates to the technical field of civil air defense equipment, in particular to a closed door system. Background technique [0002] The airtight door is used in the passage from the underground main substation and the main drainage pump room to the underground parking lot, and it is easy to close to prevent the sudden intrusion of water. The airtight door leaf is assembled and welded by flat steel plates, well-shaped ribs, and ring beams. [0003] The Chinese utility model whose notification number is CN208236227U discloses a reinforced concrete protective airtight door, which includes an airtight door body, a reinforcement layer and a concrete layer are respectively arranged inside the airtight door body, and the reinforcement layer is located on one side of the concrete layer. One side of the main body of the airtight door is connected with the protective frame through a hinge, a ventilation window is arranged on the front surface of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E06B5/10E06B3/36E06B7/22E06B5/16E06B1/52
Inventor 张乐
Owner HANGZHOU TENGRUIYUAN CIVIL AIR DEFENSE ENG CO LTD
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