Conventional fire door door closers only normally closed function and cannot be controlled by the fire linkage system reason, the Beijing branch into the dragon control system co., LTD., its research and development of linkage door closers series products, took the lead through the national fire electronic product quality supervision and inspection center, and write the enterprise standard of the product is put forward. And the product usually keep it always open fire door was closed when a fire in a timely manner to block the spread of fire smoke diffusion and partition. The conventional fire door door closers only normally closed function and cannot be controlled by the fire linkage system. Linkage door closers to keep the door open at ordinary times, fire fire door monitor after receiving the fire signal, control and door closers automatically closed door or in the case of loss of electric power automatically closed the door, linkage closed appliance doors status signal feedback function, press the power switch can be closed door manually. Use with fire doors monitor can realize double doors closed and feedback to open the door in place signal sequence. Make people's lives and property safety to get more powerful guarantee, is the fire department recommended products.

The product technology has reached the international leading products in the industry, can be used with fire control system, stay at any Angle and switch and automatic positioning. The product main features summarized as follows:

1, keep it always open the door closers usual (i.e. when there is no fire situation cocoa any manual opening and closing, and keep the opening Angle, fire door can stay at any Angle and switch, there is no limit to the point of view, also is not afraid of wind and other factors will fire door closed, meeting hereby fire door in specified must be normally open without fire regulations);

2, can connect with the fire control system, fire controlled release energy storage switch; And to close the doors, and the normally open state automatically converted into a normally closed state, to prevent the fire from spreading and partition. In the normally closed state can be 0-200 degrees can be arbitrary and manual opening and closing, and there is a closed 20 nm of torque, keep fire door is always closed.

3, normally open state, no power, once has the fire fire electricity triggered release shut down through the linkage system, energy conservation and environmental protection.

4, in view of the double open fire door has a specially designed DA closed (delay) function, can make double open fire door movement is ordered to shut down, closed the door, prevent fire development more effectively.

5, closing moment according to the quality of the fire door size, can remotely control power is automatically shut down, signal feedback door status, can get the best effect of closed.

6, the product is normally open fire doors. Window necessary device, without having to install general door closer and other accessories.

7, for without total fire control system, we specially developed a kind of door closers products, it can separate the fire smoke detector is used, when a fire alarm by smoke detector sensing information can be automatically shut down fire doors and Windows, so as to avoid fire spreading to other floors.

8, suitable steel fire door, wooden fire door, stainless steel fire doors, fire window, glass fire door.

Beijing branch into the dragon control system co., LTD is specialized in high-tech product development, production and sales and service of high-tech enterprises, is China's security product industry association, deputy director of the unit, vice President of China association of fire units, China fire protection association director unit, passed the ISO9001 quality management system certification unit, a number of national and local relevant technical specifications and product standard of the ginseng units.

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