Through-wall fireproof plugging structure for ventilating duct of subway station

• Main Authors: LIU XIAOHONG, LONG YIYANG, LI SONGLI, LIU RUI, YANG XINGWANG, HUANG QUANLIN, YAN HUALI
• Format: Patent
• Language: Chinese; English
• Published: 28.11.2023
• Subjects: ACTUATING-FLOATS; AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING; BLASTING; COCKS; DEVICES FOR VENTING OR AERATING; ENGINEERING ELEMENTS AND UNITS; FIRE-FIGHTING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; HUMAN NECESSITIES; LIFE-SAVING; LIGHTING; MECHANICAL ENGINEERING; RANGES; TAPS; THERMAL INSULATION IN GENERAL; VALVES; VENTILATING; WEAPONS

The invention relates to a subway station ventilating duct through-wall fireproof plugging structure which comprises a pipe body, a plugging mechanism is arranged in the pipe body, the plugging mechanism comprises a first plugging plate, the first plugging plate is rotatably arranged on one inner side wall of the pipe body, a torsional spring is arranged between the first plugging plate and the pipe body, and the first plugging plate is rotatably arranged on the other inner side wall of the pipe body. The torsion spring drives the first blocking plate to block the pipe body, a fixing piece is arranged on the first blocking plate, the fixing piece fixes the first blocking plate in the mode that the first blocking plate is attached to the inner side wall, rotationally provided with the first blocking plate, of the pipe body, and the fixing piece relieves fixation of the first blocking plate when encountering fire. The subway station ventilation pipeline has the effect of reducing the probability that fire in th