The advantages and problems in the development of fire doors in Henan Province Fire doors are more popular in recent years, so how much do you know about the maintenance, advantages and development of fire doors? The following section will provide you with a comprehensive knowledge of fire doors, so that you can better understand fire doors. high quality Steel fire resistance rolling shutter door Fireproof door is a kind of movable fireproof partition. In addition to the function of ordinary door, it, together with the frame, can meet the requirements of fire resistance stability and integrity within a certain period of time. It has special functions of fire prevention, smoke separation and high temperature blocking. In case of fire, it should have self closing and signal feedback functions. （1） Advantages of fire doors In case of fire, Henan fire doors and windows can be automatically closed through the linkage control system when they are in the open shoulder state, effectively ensuring the reliable closing of fire door maintenance in the fire, so as to achieve its due role in smoke separation and fire resistance. There is no big difference between the maintenance of fire doors and the maintenance of normally closed fire doors in terms of production and basic configuration, but the door closers for the maintenance of normally closed fire doors are replaced with automatic fire release devices that are linked with the automatic fire alarm. At the same time, they can be installed with the control box produced by the manufacturer. Linkage is achieved by installing smoke detectors and smoke detectors on the left and right sides of the maintenance of fire doors, When the smoke detector detects the smoke signal and sends it to the host computer of the automatic fire alarm linkage control system, the linkage control system transmits 24v power to the fire door maintenance releaser to automatically close the fire door for maintenance. The closing or opening status of the fire door maintenance has signals fed back to the alarm host computer or control box. Steel fire resistance rolling shutter door Price The automatic release device for fire door maintenance developed by Dong Shicong of Chengdu Huili University Research Institute can open the fire door maintenance for 0-180 degrees freely and close it smoothly, completely changing the disadvantage of inconvenient use of the normally closed fire door maintenance closer due to its large opening angle of 90 degrees, and once the fire door is closed for maintenance, the release device will not be reset, It has become a movable fire door maintenance that automatically opens, closes, opens and closes, overcoming the contradiction that normally closed fire doors must be manually closed or cannot be closed after being pushed to a certain limit (greater than 90 degrees) for maintenance; The lesson of blood proves that people who escape from a fire simply cannot close the opened fire door for maintenance due to panic and eagerness to escape.

What is the difference between the normally open and normally closed fire doors of Henan fire doors? The differences between the normally open and normally closed fire doors are as follows: 1. Different meanings. The normally open fire doors are usually open, and they are automatically closed by the control system only in case of fire. It is generally used in the passage or corridor of public places. high quality Steel fire resistance rolling shutter door Normally closed fire doors are closed under normal conditions and in case of fire, and need to be pushed open when someone walks around, so as to prevent smoke and fire and prevent the spread of fire. 2. The price is different, and the price of the normally open fire door is higher, and the system is strong. The price of normally closed fire doors is relatively low. Henan fireproof doors and windows 3. The composition is different. The normally open fireproof door consists of door leaf, door frame, door closer, sealing strip, release switch and other parts. The normally closed fireproof door is equipped with sequencer in addition to the above parts. 4. The control mode is different. The normally open fire door is controlled by the fire door release switch. The normally closed fire door does not need to be set with electric automatic control. It is mainly closed by the door closer and sequencer, that is, mechanical. Precautions for Henan fire door fire door 1. The fire door shall be installed according to the type of fire door used, and the appropriate installation method shall be adopted. 2. The door frame of the fire door can be fixed with the wall by expansion bolts, or iron parts can be embedded at the opening when building the wall, and welded firmly with the door frame connector during installation. 3. No matter what kind of connection mode is used between the door frame and the wall, there should be no less than 3 anchor points on each side, and they should be firmly connected. Henan fireproof doors and windows 4. When installing the fireproof door, it should be aligned and hoisted. After the size is appropriate, it should be temporarily fixed, corrected and adjusted, and then it can be connected and anchored. 5. The sliding door shall be flexible after installation; The side hung door is easy to open and tight and firm to close. Steel fire resistance rolling shutter door Price Henan fireproof doors and windows 6. Door closers must be installed on fireproof doors, and sequencers must be installed on opposite doors. 7. The handle, fire lock and other hardware accessories on the fire door must be complete. 8. It is required that the clearance from the ground plane shall not be greater than 5mm.

Henan fire door technical requirements Wooden fire door is a door with certain fire resistance performance, which is made of fire-resistant wood or fire-resistant wood products as door frame, door leaf framework, door leaf panel. If the door leaf is filled with materials, it is filled with fire insulation materials that are non-toxic and harmless to human body, and equipped with fire hardware accessories. high quality Steel fire resistance rolling shutter door The overlapping size of door leaf and door frame shall not be less than 12mm; The fit clearance between the door leaf and the hinge side of the door frame shall not be greater than the dimensional tolerance specified in the design drawings; The fit clearance between the door leaf and the locked side of the door frame shall not be greater than the dimensional tolerance specified in the design drawings; The clearance between the door leaf and the upper frame shall not be greater than 3mm; The gap between two or more door leaves shall not be greater than 3mm; The movable clearance between the door leaf and the lower frame or ground shall not be greater than 9mm; The gap between the door leaf and the door frame binding surface: the gap between the door leaf and the binding surface of the door frame on the hinge side, the lock side and the upper frame shall not be greater than 3mm; The plane height difference between the door leaf and the door frame: On the opening surface of the fire door, the plane height difference between the door frame and the door leaf of Tianjin Telescopic Barcode Reader should not be greater than 1mm. Wooden fireproof door refers to the door frame, door leaf framework and door leaf panel made of wood or wood products, and the fire resistance limit of the door reaches the specified value. Some small deviations between wooden fireproof doors cannot be wrong. Maybe it is a small detail problem that may fail to meet the standard. Steel fire resistance rolling shutter door Price The materials used for Henan fire door are compared first. The fire door has a simple structure and is mainly composed of four parts: door closer, door panel materials (including 06 and 08), door frame materials, and fire panels. Grade A fireproof door is generally made of 08 material with good quality. Its normal service life is 5-8 years. The iron material of the door panel is thick. For the fireproof door with the same thickness, the weight of Grade A fireproof door is greater than that of Grade B.

Henan fireproof door installation method The fireproof door is divided into steel fireproof door and wooden fireproof door according to the material. There are some differences in the installation method of the two fireproof doors. high quality Steel fire resistance rolling shutter door The fire rating is slightly different. You must pay attention to the details when installing. First of all, when installing the wooden fireproof door, the size of the door frame should be 20mm smaller than the opening, and the lower foot of the door frame should be buried 20mm below the ground. The door frame should be firmly fixed with the wall, and perpendicular to the corner. The vertical frame and bracing frame shall be straight and at the same angle to avoid planing and sawing. There shall be no less than 3 fixed points on both sides of the door frame, and the spacing shall not be greater than 800mm. Secondly, during the installation of the steel fire door, considering the bending deformation of the door frame, it is necessary to support the door frame with wooden braces in the width direction of the door frame. The lower foot of the door frame is buried 20 mm below the ground, and then the door frame is welded with the embedded parts on the wall. Then make a hole in the wall at the upper corner of the door frame, and pour concrete of cement, sand and expanded perlite (1:2:5), which can be used after the concrete has set. Steel fire resistance rolling shutter door Price Requirements for airtightness of fire doors: there are clear requirements for the size of the gap at each overlap of fire doors: for steel fire doors, the overlap between the leaf and the door frame shall not be less than 10mm, and the gap between the leaf and the door frame on both sides shall not be more than 4mm. The gap after the installation of the fire door cannot be too large, otherwise the airtightness of the fire door is difficult to guarantee, and it is difficult to reflect its role in restraining fire and smoke spread under fire conditions.

What is the standard of Henan refuge door? Requirements for fire protection structure: 1) The floor of the evacuation floor must be cast-in-place reinforced concrete floor, and the fire resistance must be 2.00h or higher. high quality Steel fire resistance rolling shutter door It is necessary to provide insulation on the floor. The fire resistance of the walls around the evacuation floor and the bulkheads in the evacuation floor shall not be less than 3.00h, and the bulkhead doors must be fire doors. Henan refuge bay door 2. As the equipment floor: 1) Gather various equipment and pipeline shafts into compartments. The flammable and combustible liquid or gas pipeline shall be located in the center, and the equipment pipeline area shall be separated from the fire prevention area and evacuation area. The fire prevention limit of the firewall is 3.00h or more. 2) The pipe shaft and machine room must be separated from the evacuation area, and the fire partition with a fire limit of 2.00h or more shall be used. Pipeline wells and equipment doors shall not be opened directly to the evacuation area. Steel fire resistance rolling shutter door Price If you really need to enter the evacuation place, the distance from the entrance to the evacuation place must be at least 5m, and fire doors must be used in the evacuation room.

Henan fire rolling shutter door is generally installed in the place determined by the process. In addition to the firewall, the fire rolling shutter door should be installed in the two fire compartments where there is no firewall. It is generally located at the following parts. (1) Close the evacuation staircase to the walkway; Enclose the elevator hall, the door leading to the front room and the front room leading to the walkway. (2) Divide the fire compartment and control the fire wall and the door on the fire partition in the building area of the compartment. When it is difficult to set firewall or fire door in the building, fire rolling shutter door shall be used instead, and water curtain shall be used for protection. (3) Code (such as GB50045-95 Code for Fire Protection Design of High rise Civil Buildings) or partition door with special requirements for fire and smoke prevention. high quality Steel fire resistance rolling shutter door For example, the partition doors of equipment rooms (cylinder rooms, foam stations, etc.) attached with fixed fire extinguishing devices in high-rise civil buildings, ventilation, air conditioning rooms, etc. should be Class A fireproof doors; The door on the partition wall of the basement room where people often stay or there are many combustibles shall be Class A fireproof door; Due to limited conditions, it is necessary to arrange oil fired and gas-fired boilers, oil immersed power transformers, high voltage capacitors and switches filled with oil, etc. in high-rise buildings. The doors on the partition walls of special rooms should be Class A fireproof doors. There are also household doors with special requirements that must be fireproof, such as fire control command center, archives room, valuables warehouse, etc., which usually use Class A or Class B fireproof doors. Steel fire resistance rolling shutter door Price The limited area of Henan fire shutter door special grade fire shutter In the use of special grade fire shutter, because it is mainly used in the rapid formation of fire separation areas, and is mostly set in applications with large space, as a visible fire separation device, generally in the production of fire shutter, fire shutter will be painted with a more striking color, It can not only make the fireproof rolling shutter have a better decorative effect after being folded, but also can remind people of the escape route in fire accidents through eye-catching and penetrating colors in the fire compartment, so as to buy time for effective escape.