How to maintain the fire door

Fire doors of buildings are generally installed at the necessary openings on the firewall, stairwell entrances and exits, machine room doors, pipeline shaft wall openings and places prone to fire. The fire door shall be a side hung door that opens in the direction of evacuation. The door leading to the roof of the evacuation staircase shall open in the direction of the roof. The fire door shall be able to be opened manually from either side after closing. Walkways, staircases and normally open fire doors used for evacuation shall have the function of self closing and signal feedback in case of fire.

Common building fire doors can be divided into steel and wood fire doors according to their materials. The former frame and leaf are all formed by cold rolling sheet, and the inner cavity of the door leaf is filled with refractory insulation materials; The latter is generally made in the form of plywood door, and its wood structure needs to be subject to fire-resistant treatment such as pressurized fire-proof impregnation, and the plywood is coated with fire-resistant paint. In order to ensure the overall fire-proof effect of the door and avoid losing the switch function after high temperature, its hardware fittings should have fire-resistant performance, and the embedded glass should be fire-resistant glass, Fireproof glass is compounded by condensing a transparent flame retardant adhesive between two or more layers of flat glass.

As one of the fire protection products, the production, sales and use of fire doors are strictly regulated, that is, the production should go through the relevant approval procedures at the public security fire control institutions without legal inspection institutions. Fire door refers to the door that can isolate fire in case of fire. It can meet the special requirements for fire prevention, and also has the use function of general doors, that is, it can be used by people at ordinary times, and can be closed in time in case of fire, so as to limit fire and smoke in a limited area to effectively prevent the spread of fire. It is prohibited to produce, sell or use products that pass the inspection.

The fire door of the building is divided into Class A, Class B and Class C, and its fire resistance limit is 1.50 hours, 1.00 hours and 0.5 hours respectively. At the same time, the specific location of the fire door to be installed and the corresponding fire resistance rating are clearly specified.

First, pay attention to cleaning. There should be no stains on the door body of the fire door. Try not to let the door get too much dust, and prevent the door from rusting. As with daily cleaning, properly wipe the door body of the steel fire door, rather than cleaning it after the door body is very dirty;

What are the problems with fire doors

Fire door refers to the door that can meet the requirements of fire resistance stability, integrity and thermal insulation within a certain period of time. It is a fireproof partition with certain fire resistance, such as staircase and vertical shaft. When a fire occurs, the fire door can block the flame and let the trapped people escape.

Fire door is an important part of fire fighting equipment. According to the usual open state, fire door can be divided into three types: one is open at ordinary times and automatically closes in case of fire, which is called normally open fire door; One is usually closed. When people walk around, they should push the door to open. After people walk through, they will automatically close under the action of the door closer. If they return to the closed state, they are called movable fire doors. On the other hand, it is usually closed, and only authorized people can pass. In an emergency, it automatically releases the fire door to allow people to pass, which is called a normally closed fire door. The difference of opening state is the key to affect the function of fire door. However, we often see that there are many problems in the use of fire doors, leading to fire doors can not play a role in the event of a fire.

The following problems mainly exist in the use of fire doors:

1. Ordinary bolt or lock shall be installed on the fire door. In some places, in order to close the door for a long time, it is necessary to install a bolt or an ordinary lock on the door to lock the fire door.

2. Remove the door closer on the fire door without permission. In case of fire, it is the fire door closer that can automatically close the fire door without the control of personnel. Some users remove the fire door closer for the convenience of access at ordinary times. Once a fire accident occurs, the fire door cannot be closed, which will have no effect. It is also not advisable to replace the fireproof lock with the anti-theft lock.

3. People do not pay attention when using the fire door at ordinary times. People push the fire door forcefully when entering and leaving the full exit at ordinary times, or even kick the fire door with their feet, which causes the deformation of the fire door body and can not be closed normally. Even if the fire door is firmly installed, it will fail if used improperly

4. Unauthorized decoration of fire doors. The main function of fire doors is fire prevention, so there are some deficiencies in the aesthetic effect, especially the wooden fire doors, which are more difficult to describe. Therefore, some people carry out secondary modification of fire doors after acceptance by the fire department. Some people paint or paste decorative plates, Whether the materials used are flammable or not is a problem. In addition, problems such as damage to the door body, damage to the internal fireproof materials, and spalling of the fireproof sealing strip will affect the fireproof performance of the fireproof door.

The existence of these problems will affect the performance of the fire door. Therefore, we call on everyone to take care of the fire door in their daily life, do not make unnecessary modifications, and use it according to the specifications. In this way, the fire door can really play a role in ensuring safety.

Now there are many manufacturers of fire doors, so there are many kinds of fire doors on the market, but the products with really good quality are second to none. The prices of fire door products vary, and some even differ several times. The shoddy and shoddy products still can be seen everywhere in the market.