Soft automatic fume-blocking drop (rolling) curtain for fire prevention

Abstract

The invention concerns a drum spring shaft, which comprises a vertical shaft(2), a bearing(3), a bearing pedestal(4), a spring(5), a fixation frame(1) and a drum(6), and a speed regulating device forregulating the rotation speed of the drum and a control device connected with the speed regulating device. The inventions also relates to a soft self fire fighting smoke block drop drape(roller drape). It comprises said roller spring shaft, fire fighting smoke block drape surface(24), a weight balanced bottom girder(11), a smoke block unit, guiding rails(13), door heads(18) and decoration cover(25). The fire proof smoke block drop drape(roller drape) is light, flexible and reliable, having low cost and favorable fire resisting property, being convenient for construction natural ventilation, light penetration, having no barrier for free passage of the article and personnel circulation in fire disaster.

Description

technical field [0001] The invention belongs to the building fire protection component in the field of fire safety, and in particular relates to a roller spring shaft that does not need to be driven by power, automatically rotates, and has a controllable speed, and a soft automatic fireproof smoke drop (roll) curtain including the roller spring shaft. Background technique [0002] Fire shutters and fire doors, as functional building fire protection components in the field of fire safety, have been widely used in building fire compartments and fire separation in elevator front rooms, stairwells, and evacuation walkways to prevent fire from spreading. [0003] Fire shutters are suitable for fire separation in large openings of buildings. Because its roller blind machine is driven by electric energy, has a complex structure, takes up a lot of space, and its price and other factors, it is not suitable for use as a fire compartment in a small opening of a building. In addition, ...

AI Technical Summary

Problems solved by technology

Because its shutter machine is driven by electric energy, its structure is complex, it takes up a lot of space, and its price and other factors are not suitable for use as fire compartments in small openings of buildings.

In addition, when it loses power, the speed of manual lifting is slow, which will affect the evacuation, rescue and escape of personnel in emergency situations

Some patents have invented the method of setting a door in the opening on a large fire shutter to meet the safety of personnel evacuation and escape in emergency situations, but it still fails to effectively solve the problem of people's safety when the fire shutter is used on a small opening in a building. Contradictions such as evacuation, escape and price

[0004] Fire doors are purely used as building fire protection components. The purpose of installing them in the fire compartments of buildings, elevator front rooms, stairwells, and evacuation walkways is to prevent the spread of fire and provide safe passages for evacuation. Fire doors must play a role in fire prevention. One of the important conditions is whether it can maintain a normally closed state. Practice has proved that it is difficult to maintain a normally closed state for fire doors installed in elevator front rooms, stairwells, and evacuation walkways. In order to facilitate the opening and maintenance of fire doors The fire protection function of the closed state, people design and install an automatic door closing device (door closer) on the fire door, through the automatic door closing device, although the fire door realizes the automatic closing function, but the normally closed fire door must maintain The normally closed state of the building also hinders the natural ventilation, light transmission and barrier-free passage of passing pedestrians and objects in the building itself under non-fire conditions. Installing normally closed fire doors in buildings is a preventive fire protection measure. It is useless. The probability of a normally closed fire door encountering a fire is one in ten thousand, or even one in one hundred thousand, one in a million, and the elevator front room, stairwell, and evacuation walkway are used as the access to the building , the frequency of people passing and goods flowing is 10,000 times, 100,000 times, or even a million times higher than the probability of fire. Installing a normally closed fire door in the above position means that people can live in a safe state without fire in daily life. , to open the fire doors every day, to pass through obstacles all the time, and in case of emergencies including fire accidents, it also hinders the speed of people's evacuation. In addition, normally closed fire doors are located on public walkways , not only affects the natural ventilation and light transmission of the building, but its shared door handle will lead to the spread of infectious diseases and affect public health; the resistance of some closing devices of fire doors with unstable quality will also make 5-6 years old Children under the age are unable to open the fire doors and go out for outdoor activities. Therefore, although the functional normally closed fire doors installed on the elevator front room, stairwell and evacuation walkway can prevent the spread of fire, they are more for People bring inconvenient traffic and obstacles to moving objects in their daily work and life, which has an impact on the natural ventilation, light transmission, and heat dissipation of the building itself. Normally closed fire doors in elevator front rooms, stairwells and evacuation walkways in hotels, restaurants, office buildings, industrial and mining enterprises, underground buildings and high-rise residential buildings, etc., bring obstacles and troubles to people's daily work and life, It is much higher than the understanding of fire prevention. In the reality that people's fire prevention awareness is not strong and disaster prevention knowledge is lacking, it is difficult for the normally closed fire doors installed in the above-mentioned building parts to maintain a normally closed state, and most of them are opened, which is useless. Over time , People ignore the role of normally closed fire doors installed in elevator front rooms, stairwells, evacuation walkways, etc. What is it used for? After the project is completed and passed the fire inspection by the fire department, its fire protection function is mostly ignored by people, and its unfavorable factors have become the object of people's troubles and the reason for damage, and some are even destroyed. Dismantled, lost the expected disaster prevention function. According to the "Fire Law", "Code for Fire Protection Design of Buildings" and "Code for Fire Protection Design of High-rise Civil Buildings" and related codes and regulations, it has constituted a major fire hazard. Due to this The ubiquity and complexity of fire hidden dangers in buildings has brought great difficulties to the elimination of hidden dangers. In terms of economy and efficacy, it is an invalid investment, which not only causes huge losses to the economy, but also endangers the safety of people's lives and properties. It has brought a serious threat, and also brought many potential fire hazards to the fire safety of buildings.

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