Electromagnetic door suction, this kind of door suction is often used with fire doors, also known as electromagnetic door suction for normally open fire doors.
1. What is electromagnetic door suction
2. The working principle of electromagnetic door suction
3. Electromagnetic door suction classification
4. Installation method of electromagnetic door suction
1. What is electromagnetic door suction
Electromagnetic door suction is an electromagnet used for automatic doors. It is a door positioning device that uses electromagnetic principles to generate suction, also known as electronic door suction. Due to its simple mechanical structure, reliable electromagnetic principle, and low-voltage micro-current operation, its service life can reach decades or even hundreds of years. On-site manual control and remote electronic control are widely used in building intelligent door control facilities. At present, electromagnetic door suction is mainly used for fire doors in buildings, and must pass the inspection of the National Fire Protection Center.
2. The working principle of electromagnetic door suction
The electromagnetic door suction is mainly composed of a magnet body (installed on the wall), a suction plate (installed on the door leaf), a mounting base or a bracket, with a release button and a buffer pad. The working principle of the electromagnetic door suction is to generate electromagnetic force by the conversion of current, to absorb the suction plate installed and fixed behind the fire door, and firmly absorb the door, so that the door cannot be closed, and the fire passage is unblocked.
For example, the normally open fire door release device composed of electromagnetic door suction and fire door controller has the function of keeping the fire door normally open and automatically closing in the event of a fire, realizing "closing the door when power off", which can be powered by the mains at ordinary times. It does not occupy limited fire-fighting power resources, and does not increase the cost of fire-fighting power supply equipment and circuits. When a fire occurs, the mains power supply is just cut off to realize automatic shutdown, thus ensuring the smoothness of the usual fire-fighting passages. The effect of smoke and fire prevention", thus ensuring the safety of personnel and property.
3. Electromagnetic door suction classification
According to different installation methods, electromagnetic door suction can be divided into three types: wall type, floor type and chain type. Door suction and chain fasteners. Generally, the wall-type door suction is suitable for the situation that the door leaf is very close to the wall at the maximum opening angle, and the floor-type electromagnetic door suction is suitable for the situation that there is no wall behind the door leaf after it is opened, so the wall type cannot be used.
The chain door suction is more suitable for the case where there is a wall behind the door leaf after opening, but the distance is far away. Therefore, when choosing the type of door suction, you should determine which one to use according to the distance between the door and the wall.
4. Installation method of electromagnetic door suction
First of all, we need to determine the installation method of the door suction and choose a suitable door suction product, then choose the appropriate installation position on the door and the wall, and then align the front of the suction plate with the front of the electromagnet without leaving any gaps. , otherwise it will affect the magnetic force.
Then, tear off the self-adhesive sticker, stick it on the back of the suction plate, align the front of the suction plate with the front of the electromagnet, and then open the door until it touches the suction plate (bottom), and use a little force to make the suction plate. Glue the door leaf and fasten it with the provided screws.
Author:Written by Ms.Rebecca Fu from S4A INDUSTRIAL CO.,LIMITED
Factory Address:Building S4A, South Third Lane, Qiuyuling Street, Zhangkeng Village, Hengli Town, Dongguan City, Guangdong Province Office Address:#601,floor 6 ,building 1,JINFANGHUA industrial zone, Bantian St. Longgang Dist. Shenzhen, PRC.
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