Interpretation of the structure of fire doors
According to the material classification, fire doors can be divided into: wooden fire doors, steel fire doors, steel wood fire doors and other materials fire doors. Our commonly used fire doors are wooden fire doors and steel fire doors.
Interpretation of the composition of fire doors, fire door leaves and door frames, commonly used wooden fire doors and steel fire doors, door leaves and door frames are made of non-combustible wood and steel, respectively. If the door leaf is filled with materials, the filling will not affect the human body. Toxic and harmless fire and heat insulation materials.
Fire-resistant glass. If glass is inlaid on the fire-resistant door, fire-resistant glass should be used, and its fire resistance should meet the conditions of the corresponding type of fire-resistant door. (Fireproof glass should be inspected by a nationally recognized and authorized testing agency)
Door closers, fire doors should be equipped with fire door closers, or a door closing device that allows normally open fire doors to automatically close the door leaf when a fire occurs (except for special parts, such as pipe well doors, etc.). Fire door closers should be inspected by a nationally recognized and authorized testing agency; door closing devices that automatically close the door leaf should be tested by a nationally recognized and authorized testing agency.
Sequencer, double-leaf fire doors should have the function of self-closing in sequence, which is realized by sequencer.
Fireproof locks, the door locks installed on the fire doors shall be fireproof locks, and the fireproof locks shall be inspected by a nationally recognized and authorized testing agency.
The pipe well inspection door is locked and closed with a special fire-proof lock.
The thickness of the fireproof hinge (hinge) of the fireproof door hinge (hinge) should not be less than 3mm.
Fireproof bolts, steel fireproof bolts shall be used, and shall be installed on the door leaf on the opposite fixed side of the double-leaf fire door or multiple fire doors (if required).
Seam cover, double-leaf fire door with flat or stop structure should be equipped with seam cover. The seam plate and the door leaf should be connected firmly; the cover seam plate should not hinder the normal opening and closing of the door leaf. Fireproof seal
Fireproof seals should be embedded in the gaps between the door frame and the door leaf, and the door leaf and the door leaf of the fire door. For example: inflatable fireproof sealing tape, etc. (Fireproof seals should be inspected by a nationally recognized and authorized testing agency)
Fire passage push rod lock (escape lock, fire lock) The anti-passage push rod lock is a door lock used for emergency passages. It can be pushed directly from the inside and cannot be opened from the outside. It has a certain anti-theft function and is often used in shopping malls. Supermarket entertainment and other places with a lot of people.
Reminder signs, normally closed fire doors should be provided with reminder signs such as 'keep fire doors closed' in their obvious positions.