Fireproof curtains: technical specifications, operating conditions and reviews

Among all devices and devices for fire protection, fireproof roller blinds take a special place . They differ in compactness, speed of response, efficiency in the process of use. Due to their design, they can be installed in rooms for various purposes. Installation of fire curtains is carried out to protect door, window openings, individual elements, mechanisms and devices. They are used for zoning space, dividing corridors. Next, let's take a closer look at what fire protection curtains are.

Appointment

Automatic fire retardant curtains and fire curtains, as well as gates, doors and other obstacles, prevent the spread of smoke and fire. Their task is to detain toxic products from one and oxygen from the other side. Among other things, fire curtains are now considered to be a fairly effective means of extinguishing. When the intake of fresh air ceases, the flame can go out by itself. If fire retardant devices are used in conjunction with automatic foam, gas or water type extinguishing systems, the elimination of fire can be carried out without human intervention.

Operational properties

Fireproof curtains are made of a material with the following properties:

• Strength.
• Flexibility.
• Light weight.
• Airtightness.
• Resistant to the effects of atmospheric phenomena.
• High level of chemical resistance.
• Low thermal conductivity.

Production features

Today the most suitable material for the manufacture of fireproof devices is glass fiber cloth. For its production, refractory glass grades are used, similar to those used in barriers and partitions. In order to increase the level of mechanical strength, each fiberglass yarn is reinforced with a steel wire or the whole surface of the curtains is reinforced with a stainless steel mesh. The external curtains of the case (in which the drive mechanisms are located and the sheet itself in the non-operating state) is equipped with heating. The material of the curtain itself is treated with silicone. This helps to reduce the negative impact of moisture and temperature changes on the product, and also ensures the normal operation of the device in any weather.

Design features

Fireproof curtains, the price of which varies from 7 to 7,8 thousand rubles, can be installed both inside and outside the premises. In the upper part of the door or window opening is a cylindrical body made of stainless or galvanized steel. It contains a shaft on rollers or bearings. They provide ease when rotating in both directions. With the help of a reducer, one end of the shaft is connected to an electric motor, which works to lift the blade when it is opened. In the non-working state, the curtain is fixed along the upper edge of the shaft along its entire length and is tightly wound on it. A special metal tire runs along the lower edge. It performs several tasks at once:

• Hold the blade in expanded form.
• Direction of cuts along lateral sealing constructions.
• Unwinding the curtains under the influence of its own weight.
• Closing of the slot of the case in non-working condition.

In some designs, mechanisms of web movement are provided not only in the vertical, but also in the horizontal direction. These products differ only in the features of the electric drive. It functions both for closing and opening the curtain.

The mechanism of work

To keep the blade in the upper position in the structure is provided with an electromagnet. It is part of an electric motor that is constantly energized. After the signal is received from the central control or fire alarm device, the circuit is opened. As a result, releasing, the tire falls down and stretches the canvas. The curtain on its lower edge fits snugly against the structural element of the frame structure. The side sections are located inside the corresponding guides, or are pressed against the perimeter of the opening. The folding of the blade is carried out when a manual button signal or an automatic switching system is applied. As a result, the electric motor drives the winding shaft. The design also contains limit switches. They are installed directly on the engine and turn it off automatically when the bottom bus reaches a certain position. If the hull is to be suspended some distance from the ceiling, the entire top should be carefully sealed. In Russia, the most popular are the fire curtains EI 60. Let us further consider the scope of their use.

Application

The high level of fire resistance of fire retardant structures EI 60 allows them to be used in the protection of not only warehouse or technical premises. They can be installed in shops, educational institutions, sports facilities and other permanent objects of people. Constructions restrain the spread of open flame and high temperature for an hour. Products are produced that can withstand fire and for a longer time. This causes the use of fixtures in brick and concrete structures. In wooden and temporary buildings such structures are not used, as a rule.

Dimensions of products

They can be very diverse. Some curtains have impressive parameters. The width of individual products can reach 50, and height - 10 meters. Thanks to this, it is possible to fence off the premises of a large area. In such large-sized structures, special openings are provided for moving people during evacuation and providing firemen access to the hearth. Fire retardant linens with loopholes have the same resistance as deaf ones. The aisles are mounted on the joints of the individual longitudinal parts. Through such loopholes, neither cold nor hot smoke penetrates.