FIRE PREVENTION CLOSING APPLIANCE

摘要

PURPOSE: To provide a fire preventive closing device which is enough heat resistant and which is structured not to make any gap at the closing time of the fire preventive closing device at quite high thermal stress. CONSTITUTION: A fire preventive closing device has multiple fire preventive plate elements 1 which can be rotated respectively around paralleled shafts. The plate element can rotate from a flowing open position 15 in which an eminent open space is formed to a closing position in which the plate element forms a wall to stop flowing. At one flange part of the plate element which comes to the neighbor of an opposite flange part of the adjacent plate element in the closing position of the plate element, there are arranged a flat part 7a and a closing structure. The flat part 7a extends to above the flange part of the adjacent plate element and it is approximately parallel to the flange part. The closing structure is approximately vertical to the flat part 7a and it contains a transverse part positioned in front of the flange part surface of the adjacent plate element.